Disclosed in the present application is an MEMS optical microphone. The MEMS optical microphone comprises: a shell, which has an inner cavity and a sound inlet, which allows the inner cavity to be in communication with the outside; a micro-electro-mechanical module, which comprises a vibrating diaphragm, the vibrating diaphragm being suspended in the inner cavity, wherein when a pressure is applied to the vibrating diaphragm, a light-passing gap is opened in the vibrating diaphragm, and the size of the light-passing gap is increased or reduced with the pressure applied to the vibrating diaphragm; a photoelectric module, which comprises an electromagnetic radiation source and a sensor, wherein a light beam, which is emitted by the electromagnetic radiation source, passes through the light-passing gap and then reaches the sensor; and an integrated circuit module, which is electrically connected to the photoelectric module. In the present application, a vibrating diaphragm is provided with a light-passing gap, which is opened or closed in response to a pressure or sound signal applied to the vibrating diaphragm, and the amount of light, which is transmitted through the light-passing gap, is controlled such that a transmitted light beam is converted into an electrical signal, which corresponds to an applied pressure level for the sound signal and has the advantages of a high sensitivity, a flat frequency response, etc., thereby providing potential for further improving the device performance.
Disclosed in the present invention is an MEMS optical microphone, comprising: a housing, which is provided with an inner cavity and a sound inlet for making the inner cavity be in communication with the outside; a micro-electro-mechanical module, which comprises a vibrating diaphragm, wherein the vibrating diaphragm is suspended in the inner cavity and is provided with a light passage gap in a penetrating manner, and the size of the light passage gap is increased or reduced along with the magnitude of sound pressure; a photoelectric module, which comprises an electromagnetic radiation source and a sensor that are respectively arranged on two opposite sides of the vibrating diaphragm, wherein the sensor is configured to receive a light beam emitted by the electromagnetic radiation source, the light beam covers the light passage gap, and the size of the light beam is greater than the maximum size of the light passage gap; and an integrated circuit module, which is electrically connected to the photoelectric module. Comparing the present invention with the prior art, the size of the light beam emitted by the electromagnetic radiation source is set to be greater than the maximum size of the light passage gap, so that the dynamic range of the MEMS optical microphone is widened, sound signals in a larger range can be sensed, and there is relatively high sensitivity to a linear change in radiation or light intensity caused by the sound signals.
A MEMS optical microphone, comprising: a housing (10), which has an inner cavity (15) and a sound inlet (11) that places the inner cavity (15) in communication with the outside; a diaphragm (20), which is suspended inside of the inner cavity (15) and seals the sound inlet (11); a waveguide piece (30), a through-hole (31) being penetratingly provided therein, an input waveguide (32) and an output waveguide (33) being provided on the waveguide piece (30) on two opposite sides of the through-hole (31); a variable optical wave member (40), a second end of the variable optical wave member (40) extending into the through-hole (31), and the variable optical wave member (40) being able to move back and forth in a first direction as the diaphragm (20) vibrates and deforms; a photoelectric module, which comprises an electromagnetic radiation source (50) and a sensing member, the variable optical wave member (40) being used for converting an input polarization state of a first light path into an output polarization state, and the output polarization state presenting different forms as the distance of movement of the variable optical wave member (40) in the first direction varies; and an integrated circuit module (60), which is electrically connected to the diaphragm (20) and the photoelectric module. Such a MEMS optical microphone has advantages such as high sensitivity and flat frequency response, providing potential for further improvements in device performance.
Disclosed is a MEMS optical microphone, comprising: a housing, which has an inner cavity and a sound inlet that places the inner cavity in communication with the outside; a micro-electromechanical module, which comprises a diaphragm that is suspended inside of the inner cavity, a light lobe being formed on the diaphragm, and when sound pressure is applied, a light passing gap being formed in an opening of the light lobe, the size of the light passing gap increasing or decreasing as the sound pressure varies; a photoelectric module, which comprises an electromagnetic radiation source and a sensor, the electromagnetic radiation source and the sensor being arranged on two opposite sides of the diaphragm, and a light beam emitted by the electromagnetic radiation source traversing the light passing gap and then reaching the sensor; and an integrated circuit module, which is electrically connected to the photoelectric module. Compared with the prior art, the present invention has advantages such as high sensitivity and flat frequency response, providing potential for further improvements in device performance.
A sound-absorbing material block, a preparation method therefor, and a use thereof. The sound-absorbing material block comprises three-dimensional open-cell foam, sound-absorbing material powder, a binder, a gelling agent, and a cross-linking agent. The gelling agent, the cross-linking agent, and the binder enable the sound-absorbing material powder to be bonded to itself and connected to the three-dimensional open-cell foam. Based on the mass of the sound-absorbing material powder, the gelling agent accounts for 1-5 wt% of the sound-absorbing material powder and the binder accounts for 1-8 wt% of the sound-absorbing material powder, and based on the mass of the gelling agent, the cross-linking agent accounts for 1-10 wt% of the gelling agent. In the sound-absorbing material block, the amount of the binder that is added is reduced, and the sound absorption performance and strength of the material block are significantly improved.
The present application relates to the field of terminal devices, and in particular to a sound leakage elimination method and apparatus. The sound leakage elimination method comprises: when it is detected that a receiver outputs a call voice, controlling a collection device to determine a first frequency response curve of a first sound wave, which is generated by the call voice, at a first position outside a terminal device; controlling a speaker to generate a second sound wave; controlling the collection device to determine a second frequency response curve of the second sound wave at the first position; and according to the first frequency response curve, adjusting, to a third frequency response curve, the second frequency response curve generated by the second sound wave at the first position, wherein the frequency response of the third frequency response curve is used for being superimposed with and canceling the frequency response of the first frequency response curve at a corresponding frequency. By means of the solution, a speaker actively emits a second sound wave, and the second sound wave is modulated according to parameters of a first sound wave, so as to ensure that the second sound wave can more effectively eliminate the problem of call content leakage caused by the first sound wave.
The present application relates to the field of terminal devices, and in particular to a sound leakage elimination method and apparatus. A sound leakage elimination method, comprising: when it is detected that a receiver outputs a call voice, controlling a collection device to determine a first frequency response curve, at a first position outside a terminal device, of a first sound wave generated by the call voice; controlling a vibration motor to drive a rear housing of the terminal device to vibrate to generate a second sound wave; determining, by means of the collection device, a second frequency response curve of the second sound wave at the first position; and according to the first frequency response curve, adjusting, to a third frequency response curve, the second frequency response curve generated by the second sound wave at the first position, wherein the frequency response of the third frequency response curve is used for superimposing and eliminating the frequency response of the first frequency response curve on a corresponding frequency. By means of the embodiments of the present invention, a vibration motor drives a rear housing of a terminal device to vibrate, so as to actively send a second sound wave, and the second sound wave superimposes and eliminates a first sound wave generated by leaked call sound, so as to eliminate the problem of leakage of call content.
Provided in the present invention is a MEMS microphone, comprising a base having a back chamber, and a capacitance system arranged on the base, wherein the capacitance system comprises a back plate, and a diaphragm arranged opposite to the back plate; the back plate comprises a body portion and a fixing portion connected to the body portion and the base; and the back plate is further provided with several strip-shaped reinforcing ribs protruding from the body portion. Compared with the prior art, in the MEMS microphone provided by the present invention, the strength of the back plate can be improved.
The present utility model provides a vibration sensor, comprising a circuit board having an accommodating cavity, and a first vibration assembly having a first vibration cavity and a second vibration assembly having a second vibration cavity which are respectively arranged on two opposite sides of the circuit board. The circuit board is provided with a first through hole for communicating the first vibration cavity with the accommodating cavity and a second through hole for communicating the second vibration cavity with the accommodating cavity; the first vibration assembly vibrates so that the air pressure in the first vibration cavity changes and the vibration is transferred to a MEMS chip through the first through hole, and the second vibration assembly vibrates so that the air pressure in the second vibration cavity changes and the vibration is transferred to the MEMS chip through the second through hole. The MEMS chip in the vibration sensor provided by the present utility model can better sense vibrations generated by the two vibration assemblies, and convert sensed vibration signals into electric signals, thereby effectively improving the sensitivity and greatly improving the signal-to-noise ratio at the same time.
The present application relates to the technical field of condenser microphones, in particular to a microphone chip and a microphone. The microphone chip comprises: a substrate with a front cavity; and a capacitance system, which is arranged on the substrate, and comprises a diaphragm located at an upper part of the substrate and a back plate spaced apart from the diaphragm, wherein an air gap is formed between the diaphragm and the back plate, and the diaphragm and the back plate are connected to the substrate by means of a fixing portion. The diaphragm comprises an inner diaphragm portion, an outer diaphragm portion and a supporting portion, wherein the inner diaphragm portion and the outer diaphragm portion are spaced apart, and the supporting portion is connected to the fixing portion and the inner diaphragm portion or connected to the fixing portion and the outer diaphragm portion. The microphone chip further comprises a supporting piece, which is connected to the back plate and located between the back plate and the inner diaphragm portion. In an operating state, the inner diaphragm portion can be attracted onto the supporting piece, and the supporting piece can divide the inner diaphragm portion into at least two areas. The diaphragm in the operating state is divided into a plurality of isolated floating areas by means of the supporting piece, so that the rigidity of the diaphragm is effectively adjusted and enhanced according to requirements.
The present application relates to a microphone chip, comprising: a substrate with a front cavity, and a capacitance system, which is arranged on and connected to the substrate. The capacitance system comprises a diaphragm located at an upper part of the substrate and a back plate spaced apart from the diaphragm, wherein an air gap is formed between the diaphragm and the back plate, and the diaphragm and the back plate are connected to the substrate by means of a fixing portion. The diaphragm comprises an inner diaphragm portion, an outer diaphragm portion and a supporting portion, wherein the inner diaphragm portion and the outer diaphragm portion are spaced apart by a slit, and the supporting portion is connected to the fixing portion. The microphone chip further comprises a sealing piece, which is connected to the back plate, located between the back plate and the diaphragm, and arranged near the periphery of the inner diaphragm portion. In the microphone chip, the inner diaphragm portion and the outer diaphragm portion are spaced apart by the slit, and the supporting portion is connected to the fixing portion to fix the diaphragm, so that the diaphragm is cantilevered; and by arranging the sealing piece between the back plate and the diaphragm, the inner diaphragm portion is attracted onto the sealing piece by means of an electrostatic force, the sealing piece supports the inner diaphragm portion to achieve an operating state, and low attenuation of a microphone is reduced.
The present application relates to a microphone chip and a microphone. The microphone chip comprises: a diaphragm and a backplane, wherein the diaphragm is provided with a plurality of corrugations, the side of the backplane close to the diaphragm is provided with protrusions, and in the direction perpendicular to the backplane, the outer contours of the projections of the protrusions on the diaphragm do not intersect the outer contours of the corrugations. The side of the backplane close to the diaphragm is provided with an electrode sheet, and the side of the diaphragm close to the backplane is also provided with an electrode, so that the electrode sheet and the diaphragm form a capacitor system. The backplane is provided with sound outlet holes, and when acoustic waves pass through the sound outlet holes and drive the diaphragm to vibrate, the distance between the electrode sheet and the diaphragm changes, and the capacitance value of the capacitor system changes, so as to convert an acoustic wave signal into an electrical signal. In the direction perpendicular to the backplane, the outer contours of the projections of the protrusions on the diaphragm do not intersect the outer contours of the corrugations, thereby preventing the normal operation of the microphone chip from being affected by the adhesion between the diaphragm and the backplane due to the fact that the protrusions are in contact with and get stuck in the side walls of the corrugations during external vibration or excessive blowing.
An MEMS device manufacturing method and an MEMS device. The method comprises: depositing a thin film (2) on at least part of the surface of a sacrificial layer (1); machining through holes (21) in the thin film (2); removing at least part of a material covered by the thin film (2) in the sacrificial layer (1), and discharging from the through holes (21) the material removed from the sacrificial layer (1), so as to form a cavity (11) in the sacrificial layer (1); and depositing a sealing layer (4) on the surface of the thin film (2) facing away from the sacrificial layer (1), so as to seal the through holes (21). According to the present invention, only a layer of thin film (2) needs to be deposited, such that the production period can be shortened, and a reliable field sealing capability is achieved.
Provided in the present invention is a cantilever microphone, comprising: a base plate; a cantilever, which comprises a rotor frame, a cover plate that covers the rotor frame, and a plurality of rotor comb fingers, the cantilever being provided with a first edge fixed to the base plate and a second edge opposite to the first edge, the plurality of rotor comb fingers being fixed to an edge of the end of the cover plate close to the second edge, and the rotor comb fingers being spaced apart from the rotor frame; and a stator, which is fixed to the base plate and comprises a plurality of stator comb fingers, wherein the stator comb fingers and the rotor comb fingers are alternately arranged and spaced apart from each other; and the rotor frame is made of at least one of polycrystalline silicon, silicon nitride, silicon oxide and silicon carbide. The cantilever microphone of the present invention can achieve both high mechanical sensitivity of the cantilever and high electrostatic sensitivity of the comb structure, thereby improving the performance or signal-to-noise ratio of the cantilever microphone.
A vibration sensor (100), comprising a circuit board (1), and a vibration pickup structure (2) and a signal pickup assembly (3) which are respectively fixed to two opposite sides of the circuit board (1). The vibration pickup structure (2) comprises a first vibration pickup structure (23) accommodated in a first vibration cavity (26), a second vibration pickup structure (24) accommodated in a second vibration cavity (27), and a third vibration pickup structure (25) accommodated in a third vibration cavity (28), wherein the first vibration pickup structure (23), the second vibration pickup structure (24), and the third vibration pickup structure (25) are mutually independent pairwise. The signal pickup assembly (3) comprises a first MEMS microphone (31), a second MEMS microphone (32), and a third MEMS microphone (33). The first vibration pickup structure (23) comprises a first diaphragm (231) vibrating along a first axis (X), the second vibration pickup structure (24) comprises a second diaphragm (241) vibrating along a second axis (Y), and the third vibration pickup structure (25) comprises a third diaphragm (251) vibrating along a third axis (Z). The first axis (X), the second axis (Y) and the third axis (Z) are perpendicular to each other. According to the vibration sensor (100), vibration signals in three directions can be picked up at the same time, and the induced vibration signals are converted into electrical signals, thereby effectively improving the sensitivity and bandwidth of the vibration sensor (100).
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
G01H 11/06 - Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
A thin-film bulk acoustic resonator, comprising a substrate (1), an acoustic reflection structure (2) arranged on one side of the substrate (1), a bottom electrode (3) stacked on one side of the acoustic reflection structure (2), a piezoelectric thin film (4) covering the bottom electrode (3), and a top electrode (5) stacked on the side of the piezoelectric thin film (4) away from the bottom electrode (3), wherein an interdigitated protruding frame (6) is provided on the side of the top electrode (5) away from the piezoelectric thin film (4); the interdigitated protruding frame (6) comprises a first protruding frame (61) and a second protruding frame (62) which are arranged opposite each other; at least one pair of interdigitated structures which respectively extend towards each other from the first protruding frame (61) and the second protruding frame (62) and are spaced apart by a preset distance is formed in an overlapping manner; and each interdigitated structure comprises two interdigital fingers spaced by a preset distance in an overlap direction. Two or more transverse Rayleigh-Lamb waves can be reflected to achieve high reflection efficiency, and a Q value corresponding to the anti-resonance frequency of the resonator is improved. The problem of stripping residue caused by a closed loop of an existing protruding frame can be solved.
H03H 3/02 - Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
H03H 9/17 - Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
The present invention provides a MEMS microphone, comprising a substrate having a back cavity and a capacitor system provided on the substrate. The capacitor system comprises a back plate and a vibrating diaphragm provided opposite to the back plate; the vibrating diaphragm comprises a vibrating portion and a fixed portion surrounding the vibrating portion and fixed to the substrate; the vibrating portion and the fixed portion are spaced apart by a slit; the fixed portion is provided with a plurality of release portions; and the release portions penetrate through the fixed portion. Compared with the related technologies, the MEMS microphone provided by the present invention can improve the reliability of the back plate.
An electrostatic clutch (100). The electrostatic clutch (100) comprises: a plurality of grounded high-impedance node electrode arrays (101), which form a rigid movable body; and a plurality of bias electrode arrays (102), which form another rigid movable body, such that an electrostatic force is generated between the plurality of bias electrode arrays (102) and the plurality of high-impedance node electrode arrays (101) when relative displacement occurs between same. Compared with the prior art, a microphone is allowed to operate under a large-range atmospheric pressure possibly expected by a customer. The electrostatic clutch is electrostatically implemented in a purely passive manner, and has advantages over other designs that require complicated electronic and active control; and since only minor alternating-current disturbances of a rotor need to be taken into account when a direct-current change at the position of the rotor is not taken into account, a film is physically decoupled from a sensing structure, such that the design of the sensing structure is simplified.
The present invention provides a loudspeaker module, comprising a housing having an accommodating space, a vibration system accommodated inside the accommodating space, and a magnetic circuit system accommodated inside the accommodating space and configured for driving the vibration system, wherein the housing comprises a supporting frame having a through cavity, a front cover covering one side of the supporting frame, and a rear cover covering a side of the supporting frame facing away from the front cover; a positioning structure is provided on an inner side of the supporting frame and the inner side of the supporting frame extends towards the interior of the through cavity to form clamping plates; an edge of the vibration system is connected to a side of the positioning structure close to the front cover; the magnetic circuit system is fixed to a side of the positioning structure close to the rear cover and is fixed to the clamping plates; the vibration system and the front cover define a front cavity; and the vibration system, the supporting frame and the rear cover define a rear cavity. The vibration system and the magnetic circuit system of the present invention are directly assembled with the housing to obtain the loudspeaker module, and the two assembly procedures of a loudspeaker and a module that are separate in the prior art can be simplified into one assembly procedure for a loudspeaker, thereby reducing the cost.
Provided in the present invention are a loudspeaker module and an assembly method therefor. The loudspeaker module comprises a housing having an accommodating space, and a vibration system and a magnetic circuit system which are accommodated in the accommodating space. The housing comprises a basket, and an upper cover plate and a lower cover plate which cover opposite sides of the basket. The basket has a side wall extending in a vibration direction of a diaphragm; the basket and the side wall enclose the accommodating space; and the diaphragm, a circuit board and a magnetic bowl are disposed on the side wall. The upper cover plate, the vibration system and the basket enclose a front sound cavity; and the lower cover plate, the vibration system, the magnetic circuit system and the basket enclose a rear sound cavity. According to the present invention, the basket has the side wall, and when the upper cover plate and the lower cover plate are assembled on the basket, the basket, the upper cover plate and the lower cover plate form the housing of the loudspeaker module, that is, the assembly process is simplified from the original two separate assembly processes for a loudspeaker unit and a loudspeaker module into one assembly process for the loudspeaker module, thereby reducing the machining difficulty and cost.
Provided in the present invention is a loudspeaker. The loudspeaker comprises a cavity filled with a sound absorption material, wherein the cavity is further filled with expandable foam which expands after being triggered, so as to limit the movement of the sound absorption material in the cavity. By means of the loudspeaker provided by the present invention, the reliability of the filled sound absorption material is improved.
A diaphragm (2) and an MEMS sensor (100) using the diaphragm. The diaphragm (2) is a rectangular diaphragm; the diaphragm comprises a diaphragm main body portion (21) as well as fixing portions (22) which are provided on the outside of the diaphragm main body portion (21) and are located at four corners of the diaphragm (2); the four corners of the diaphragm (2) are recessed towards the direction of the diaphragm main body portion (21) to form recessed portions (23); and each fixing portion (22) comprises at least two fixing anchor points (220) provided along the edge, where the corresponding recessed portion (23) is formed, of the diaphragm (2). According to the design of the diaphragm (2), the effective sensing area of the diaphragm (2) and the acoustic performance of the MEMS sensor (100) are improved.
Provided is a MEMS microphone chip, comprising a substrate, a first diaphragm fixed to the substrate, a supporting member fixed to the first diaphragm, and a second diaphragm fixed to the supporting member and spaced apart from the first diaphragm; the second diaphragm comprises a supporting portion supported on the supporting member and a free end surrounding the supporting portion; the projection of the free end in a vibration direction falls into a back cavity. The second diaphragm is configured to be a cantilever beam structure having a free end, and the middle part of the first diaphragm having a maximum displacement is used for driving the second diaphragm having the free end in connection with the middle part by means of the supporting member, so that the limitation of stress and thickness on the vibration performance of the second diaphragm is remarkably reduced, and the sensitivity of the second diaphragm is effectively improved, thereby improving the signal-to-noise ratio of the MEMS microphone chip.
A gas sensor, comprising: a substrate (1); a first housing (21), which is fixed to the substrate (1) and forms a first chamber (32) with the substrate (1) by means of enclosure; and a first infrared transmitter (35) and a first sound sensor (31), which are connected to the substrate (1), wherein the first sound sensor (31) and the first infrared transmitter (35) are both accommodated in the first chamber (32), and the first housing (21) is provided with a first vent hole (33). The gas sensor further comprises: an environment detection assembly (4), which is connected to the substrate (1) and is located outside the first housing (21); and a differential processor, which is connected to the substrate (1), wherein a second detection signal, which is generated by the environment detection assembly (4), includes an ambient sound signal and a vibration signal, and the differential processor is electrically connected to the first sound sensor (31) and the environment detection assembly (4). The differential processor may cancel an ambient sound signal and a vibration signal in a first detection signal according to the second detection signal, and eliminate the strong interference of noise and vibration in an external environment, thereby improving the precision of gas concentration measurement performed by the gas sensor.
Provided in the present invention is an MEMS microphone. The MEMS microphone comprises a base having a back cavity and a capacitive system arranged on the base; the capacitive system comprises a back plate and a diaphragm arranged opposite to the back plate, the diaphragm being located on the side of the back plate close to the base, and the diaphragm comprising a vibration part and a fixed part surrounding the vibration part and fixed to the base. The MEMS microphone is further provided with a supporting member located between the diaphragm and the back plate, the vibration part of the diaphragm being fixedly connected to the back plate by means of the supporting member. A blocking part is arranged on the side of the back plate facing the diaphragm, the projection of the blocking part in the vibration direction of the diaphragm being located at the vibration part of the diaphragm. Compared with the related art, the MEMS microphone provided by the present invention can improve the signal-to-noise ratio thereof.
A core-shell structure molecular sieve, taking a ZSM-5 molecular sieve with a mesoporous structure as a core phase, the silicon-aluminum mass ratio of silicon to aluminum of the core phase being 50-150. The core-shell structure molecular sieve takes a rare earth metal-modified ZSM-5 molecular sieve with a microporous structure as a shell layer, the mass ratio of silicon to aluminum of the shell layer being 300-800, and the shell layer containing 1-5 wt% of a rare earth metal. The shell layer of the core-shell structure molecular sieve has a high silicon-to-aluminum ratio, and after being modified with the rare earth metal, has a greatly improved water resistance. Meanwhile, the microporous structure of the shell layer can effectively limit the entry of VOCs into the core phase of the core-shell structure molecular sieve, so that the molecular sieve in the core phase can maintain a good activity, improving the water resistance and VOCs performance of a sound-absorbing material prepared from the molecular sieve with the core-shell structure, and thus endowing a loudspeaker filled with the sound-absorbing material with stable acoustic performance.
C01B 39/40 - Type ZSM-5 using at least one organic template directing agent
C01B 39/02 - Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
C04B 26/04 - Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
HCMMEMSACFB1FB1FB2FB2MEMSACAC) is connected to an input end of the second primary amplifier (Amp2); and the signal processing module (10) is used for adjusting output signals of the first primary amplifier (Amp1) and the second primary amplifier (Amp2) to target differential signals that have equal amplitudes and opposite phases, and outputting the target differentials signal to the current sharing amplifier (CR-Amp). In the single-ended-to-differential microphone circuit, the current sharing amplifier (CR-Amp), which has a small range of input common-mode voltages and low noise, is used to realize single-ended-to-differential conversion of a signal, thereby facilitating the improvement of a signal-to-noise ratio of a circuit.
ACFB1FB1FB1FB2FB2FB1BBB enables an alternating-current electrical signal to be input at the positive input end and the negative input end of the amplifier at the same time. The circuit in the present invention can use a microphone structure having a smaller capacitor, and also achieves a better system signal-to-noise ratio.
The present utility model provides a MEMS microphone, comprising a housing provided with an accommodating space, a sound hole that penetrates through the housing, MEMS microphone chips and an ASIC chip that are accommodated in the accommodating space, and a subtractor. The MEMS microphone chips comprise at least a first MEMS microphone chip and a second MEMS microphone chip, and the frequency response drop-off characteristic of the first MEMS microphone chip is different from the frequency response drop-off characteristic of the second MEMS microphone chip; both output signals of the first MEMS microphone chip and output signals of the second MEMS microphone chip are outputted to the subtracter, and after undergoing subtraction by the subtracter, said signals are outputted to the ASIC chip. Compared with related technologies, the MEMS microphone of the present utility model has good anti-interference performance and good sensitivity.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
The present utility model provides a microphone, comprising a protection structure provided with an accommodating space, and an ASIC chip and a MEMS microphone chip accommodated in the accommodating space. The microphone further comprises a low-pass filter circuit. The low-pass filter circuit is connected between the ASIC chip and the MEMS microphone chip, or the low-pass filter circuit is integrated in the ASIC chip, and the high cut-off frequency of the low-pass filter circuit is greater than 20 KHz. Therefore, by providing the low-pass filter circuit, ultrasonic band interference can be filtered out, noise can be reduced, and the audio quality can be improved.
A vibration control method and device, and a computer-readable storage medium. The method comprises: acquiring target effect parameters in a preset vibration effect design model with reference to a haptic effect requirement indicator (101), wherein the effect parameters in the vibration effect design model comprise: a granularity perception parameter, a sharpness perception parameter and a hardness perception parameter; generating a vibration control signal corresponding to the target effect parameters (10); and controlling, on the basis of the vibration control signal, an actuator to vibrate(103). According to the method, the vibration control mode of the actuator can be adaptively designed according to different haptic effect needs, thereby ensuring the diversity of the haptic effects and the adaptability to scenarios. Moreover, the vibration effect of the actuator account for the perception factors of multiple aspects, thereby providing a user with a more sophisticated haptic feedback.
A force feedback trigger module, comprising a housing having a mounting slot, a trigger swing rod rotatably connected to the housing, and a transmission device connected to the trigger swing rod. The transmission device comprises a one-way transmission module engaged with the trigger swing rod, a driving module connected to the one-way transmission module, and a driving member for driving the driving module; the driving member is connected to the driving module, and the driving member is mounted in the housing; the driving module is mounted in the mounting slot; one end of the one-way transmission module is connected to the driving module, and the other end of the one-way transmission module is engaged with the trigger swing rod. Detachable engaging connection at the position where the one-way transmission module and the trigger swing rod are engaged and at the joint between the one-way transmission module and the driving module can be used to temporarily disengage the trigger swing rod from the driving module when the trigger swing rod is reset, so that when being reset, the trigger swing rod does not drive the driving member to reversely rotate, or drag the driving member; in this way, the trigger swing rod can be quickly reset, thereby providing good game experience for users.
A loudspeaker box, comprising: a housing provided with an accommodation cavity; and a sound production unit fixed in the accommodation cavity, the sound production unit partitioning the accommodation cavity into a closed rear sound cavity and a front sound cavity communicated with the outside of the housing; a heat exchange cavity being formed in the wall body of the accommodation cavity and filled with a heat exchange medium. The heat exchange cavity filled with the heat exchange medium is formed in the housing, and when the loudspeaker box is in a working state, the sound production unit vibrates to generate heat, the heat is conducted to the heat exchange medium via the wall body of the accommodation cavity, and the heat exchange medium is in contact with outside air for heat exchange to release the heat, so that the heat dissipation efficiency of the loudspeaker box is improved.
A loudspeaker box, comprising: a housing, provided with an accommodating cavity; and a sound production unit, fixed in the accommodating cavity, wherein the sound production unit partitions the accommodating cavity into a closed rear sound cavity, and a front sound cavity communicated with the outside of the housing. A heat exchange member is further provided in the sound production unit; a heat exchange cavity is formed in the heat exchange member; the heat exchange cavity is filled with a heat exchange medium; and a part of the heat exchange member is exposed to the sound production unit. Compared with the prior art, according to the loudspeaker box, by providing the heat exchange member in the sound production unit, the loudspeaker box is in a working state, the sound production unit vibrates to generate heat, the heat is conducted to the heat exchange medium in the heat exchange member by means of the wall body of the heat exchange member, and the heat exchange medium is in contact with air outside the sound production unit for heat exchange to release heat, thereby improving the heat dissipation efficiency of the loudspeaker box.
Provided in the present application is a loudspeaker module, which comprises: a housing; a loudspeaker unit, which is mounted in an accommodating cavity of the housing; a heat dissipation support; and a heat dissipation tube, which is mounted on the heat dissipation support and located outside the housing and abuts against a heat dissipation part outside the loudspeaker module. The heat dissipation support is provided with a first cooling channel arranged around the loudspeaker unit, and the heat dissipation tube is provided with a second cooling channel in communication with the first cooling channel, and both the first cooling channel and the second cooling channel are filled with a coolant. In the present application, heat generated by the vibration of the loudspeaker unit can be transferred to the heat dissipation support and then transferred to the outside by means of the coolant in the first cooling channel and the second cooling channel, and the high-temperature coolant in the first cooling channel flows to the second cooling channel under the action of a difference in pressure, thereby achieving circulating flow of the coolant, so that the heat dissipation support has a relatively high heat dissipation efficiency.
The present invention provides a loudspeaker module. The loudspeaker module of the present invention comprises a housing having an accommodation space, a vibration system accommodated in the accommodation space, and a magnetic circuit system accommodated in the accommodation space to drive the vibration system to vibrate and produce sound. The housing comprises a supporting frame having a through cavity, a front cover installed on the opening side of the through cavity of the supporting frame and a rear cover installed on the side of the supporting frame deviating from the front cover. A positioning structure is arranged on the inner side of the supporting frame, the vibration system is fixed to the side of the positioning structure close to the front cover, and the magnetic circuit system is fixed to the side of the positioning structure close to the rear cover. A front cavity is formed between the vibration system and the front cover, and the vibration system, the supporting frame and the rear cover enclose a rear cavity. The supporting frame comprises a conductive member integrally injection molded therein, one end of the conductive member is exposed in the through cavity and electrically connected to the vibration system, and the other end of the conductive member is exposed outside the supporting frame. The solution can simplify a manufacturing process and an assembly process of the loudspeaker module, and reduce the application cost.
A sound production device, comprising a shell having an accommodating cavity and a sound production driver arranged in the accommodating cavity, wherein the sound production driver comprises a vibration system located in the accommodating cavity, and a magnetic circuit system for driving the vibration system to vibrate and produce sound in a first direction. The sound production device further comprises: a box body located in the accommodating cavity; a coil, which is arranged on the side of the magnetic circuit system away from the vibration system and is spaced apart from the magnetic circuit system; a circuit board arranged on the side of the shell that faces the coil and is electrically connected to the coil; and an elastic assembly having one end connected to the shell and the other end connected to the box body, wherein the vibration system and the magnetic circuit system are arranged in the box body, the coil is fixed to the shell so as to drive the sound production driver to vibrate in a second direction, the second direction is configured to be perpendicular to the first direction, and the elastic assembly is configured to suspend the box body in the accommodating cavity. The coil and the vibration system share one magnetic circuit system, and the sound production driver directly serves as a quality unit of the coil, so that components are shared to the maximum possible extent, thereby simplifying an assembly process and saving on costs.
Provided in the present application is a loudspeaker module, comprising a housing, a single loudspeaker mounted in an accommodation chamber of the housing, and a heat dissipation support. The heat dissipation support comprises a body part, one part of the body part being mounted in the accommodation chamber, the other part of the body part extending to the outer side of the housing, an extension part bent and extending upwards in the thickness direction of the loudspeaker module being arranged at the end of the body part located on the outer side of the housing, and the extension part abutting against a heat dissipation part outside the loudspeaker module. The body part is provided with a first cooling channel, the first cooling channel surrounding the periphery of the single loudspeaker, and the extension part being provided with a second cooling channel communicating with the first cooling channel. Heat generated by the vibration of the single loudspeaker can be transferred to the heat dissipation support, and transferred to the outside via a cooling liquid in the first cooling channel and the second cooling channel, and under the action of a pressure difference, the high-temperature cooling liquid in the first cooling channel flows to the second cooling channel, so that the circulation flow of the cooling liquid is realized, and the heat dissipation support has relatively high heat dissipation efficiency.
The present invention provides a microphone amplification circuit design method. The method comprises the following steps: placing a layer of underlying metal between a substrate and a bonding pad of an integrated circuit, forming a first parasitic capacitor between the bonding pad and the underlying metal, and forming a second parasitic capacitor between the underlying metal and the substrate; locating a circuit node in the amplification circuit, and enabling the circuit node to meet preset conditions; connecting the underlying metal to the circuit node, and connecting the bonding pad to an input terminal; welding the microphone to the bonding pad of the integrated circuit to serve as a microphone capacitor, connecting one terminal of the microphone capacitor to a high-voltage bias voltage, and connecting the other terminal of the microphone capacitor to the input terminal; connecting one terminal of the first parasitic capacitor to the input terminal, and connecting the other terminal of the first parasitic capacitor to an output terminal; and connecting one terminal of the second parasitic capacitor to the output terminal, and grounding the other terminal of the second parasitic capacitor. The present invention further provides a microphone amplification circuit. Compared with the prior art, the microphone amplification circuit design method and the microphone amplification circuit have a high signal-to-noise ratio and better performance.
A microphone circuit. The microphone circuit comprises an amplifier, a bias resistor, and a bias network module, which is connected to an input end of the microphone circuit, wherein the amplifier is used for receiving a signal, which is output by an external microphone, amplifying the signal, and then outputting same; a first end of the bias resistor is used for accessing a preset bias voltage, and a second end of the bias resistor is used for connecting to an output end of the microphone; and the bias network module is used for performing determination regarding the voltage value of the signal, and if the voltage value of the signal exceeds a voltage value range of preset threshold voltage groups, the input end of the microphone circuit accesses impedances corresponding to the bias network module, such that the amplitude of the signal is reduced, which impedances correspond to the threshold voltage groups on a one-to-one basis. Further provided are a microphone module and a method for raising an acoustic overload point of a microphone. Compared with the prior art, the technical solution raises an acoustic overload point of a microphone, and has a good electrical performance.
Provided is an acoustic transducer, comprising a base, a fixed member, a movable member, a first electrode and a second electrode, wherein the base is provided with a cavity and comprises a first surface arranged towards the cavity; the fixed member extends towards the cavity from the first surface and comprises a fixed end fixed on the first surface and a free end arranged opposite the fixed end; the movable member is fixed on the base and located above the cavity, at least partially covers the cavity and comprises a second surface arranged towards the cavity; and the first electrode is fixed on the free end, the second electrode is fixed on the second surface, and the first electrode and the second electrode are transversely adjacent. The acoustic transducer provided by the present invention has higher sensitivity, and the first electrode has higher stability, thereby improving the performance of the acoustic transducer.
The present utility model relates to a vibration motor, comprising a housing having an accommodating space, a vibration member and a fixed member accommodated in the accommodating space, and an elastic support member suspending and supporting the vibration member in the accommodating space and providing an elastic restoring force for the vibration member. The elastic support member comprises a first fixed portion fixed on the vibration member, an elastic arm having one end connected to the first fixed portion, and a second fixed portion formed by bending the other end of the elastic arm and fixed on the housing; and an extension direction of the first fixed portion is perpendicular to a vibration direction of the vibration member, and an extension direction of the second fixed portion is parallel to the vibration direction. In the vibration motor of the present utility model, by means of configurations of the elastic arm of the elastic support member and a bent structure of the second fixed portion, the accommodating space inside the housing is effectively utilized, a strain area length of the elastic support member is increased, and an elastic stress of the elastic support member is effectively improved, thereby prolonging the service life of the elastic support member, and effectively improving the assembling efficiency and increasing the product utilization rate.
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Provided by the present utility model is a linear motor, which comprises a cover plate, a stator assembly and a vibrator assembly fixed on the cover plate, and a housing the inner part of which covers the stator assembly and the vibrator assembly. The stator assembly comprises an FPC board fixed on the cover plate, and a coil bonded on the FPC board. The FPC board is provided with a glue injection hole, and the coil is bonded to the FPC board and the cover plate by means of the glue injection hole, so that the coil, the FPC board and the cover plate may be fixed at the same time, which helps to enhance the bonding strength of the coil, the FPC board and the cover plate.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
44.
VIBRATION-FREQUENCY DESIGNING METHOD BASED ON MUSIC FREQUENCY
Provided is a vibration-frequency designing method based on music frequency. The method comprises the following steps: S1: presetting a set of quantization modules which comprises a personalized input quantization module, a music feature quantization module and a vibration effect quantization module; S2: inputting a user personalization parameter, and obtaining a specific quantization value of personalized input through the personalized input quantization module; S3: extracting a music feature of a music signal, and obtaining a specific quantization value of the music feature through the music feature quantization module; S4: carrying out quantization calculation, calculating same according to a formula, and obtaining a relative value of a vibration effect frequency; S5: mapping the relative value of the vibration effect frequency through the vibration effect quantization module to obtain an absolute value of the vibration effect frequency; and S6: broadcasting the vibration by a motor on the basis of the absolute value of the vibration effect frequency. The vibration-frequency designing method realizes perfect conversion from an audio music frequency to a tactile vibration frequency, and provides designers or users with an efficient and rich tactile experience.
G10L 21/06 - Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
G10L 19/032 - Quantisation or dequantisation of spectral components
Provided are a button battery casing (100) and a button battery (300) having same. The button battery casing comprises a main casing body (1) and a cover plate (2), the main casing body is an electrically insulating casing having an accommodating cavity (01), the accommodating cavity is provided with an opening (001), and the cover plate covers an end part of the opening and covers the accommodating cavity; the cover plate comprises a first conductor part (21), a second conductor part (22), and an insulating part (23) which is disposed between the two conductor parts and which is used for preventing the two conductor parts from mutually conducting, the insulating part has a first end surface (231) and a second end surface (232) that are oppositely arranged, the first end surface and the second end surface both face a side wall (12) of the accommodating cavity, the first conductor part extends in the direction from the first end surface towards the side wall opposite to the first end surface, and the second conductor part extends in the direction from the second end surface towards the side wall opposite to the second end surface. A winding core (4) accommodated in the accommodating cavity comprises a positive electrode piece (41), a negative electrode piece (42), and a separator (43), and the first conductor part and the second conductor part on the cover plate may be respectively used as the positive electrode lead-out end of the positive electrode piece and the negative electrode lead-out end of the negative electrode piece. The described battery casing is beneficial for improving the effective volume and capacity of a button battery, and at the same time, shortens the duration of a welding process for positive and negative electrode lead-outs of a winding core, and production efficiency is improved.
H01M 50/109 - Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure of button or coin shape
H01M 50/216 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for button or coin cells
46.
DYNAMIC TACTILE EFFECT GENERATION METHOD AND APPARATUS, DEVICE, AND STORAGE MEDIUM
Disclosed in the present application are a dynamic tactile effect generation method and apparatus, a device, and a storage medium. In the present application, by detecting a triggering condition of an event, an event which needs to realize tactile occurrence is identified, such that a non-tactile event can be avoided, and false triggering can be reduced; by performing feature identification on a triggered event, a required event feature can be extracted; matching between the event feature and a tactile feature is performed according to a preset rule to generate a standardized tactile effect file, such that the matching efficiency is improved; moreover, because the standardized tactile effect file is applicable to electronic products, the transformed corresponding standardized tactile effect files of different trigger events can also be applicable to electronic products, thereby facilitating popularization; moreover, by calling a basic tactile effect and combining the transformed standardized tactile effect files, a dynamic tactile effect is generated, without additional storage of tactile effects, and corresponding different dynamic tactile effects are generated according to different events, thereby improving user experience.
The present application provides a vibration motor, comprising a mounting housing, a vibrator accommodated in the mounting housing, an elastic member suspending the vibrator in the mounting housing, and a stator fixed to the mounting housing; one of the stator and the vibrator has magnetic steel, and the other has a coil; the vibration motor further comprises a flexible circuit board, the mounting housing has a port corresponding to the flexible circuit board; the flexible circuit board comprises a first conductive portion arranged in the mounting housing, a second conductive portion arranged outside the mounting housing, and a bending portion connected between the first conductive portion and the second conductive portion, the bending portion extends from the first conductive portion and passes through the port to be connected to the second conductive portion; and the flexible circuit board further comprises a limiting portion extending from the bending portion and accommodated in the mounting housing, and the limiting portion is used for abutting against an inner wall surface of the mounting housing near the port. The present technical solution solves the technical problem in the prior art that the assembly precision cannot be ensured as the size of the flexible circuit board pulled out of the mounting housing easily goes beyond the pulling range due to being unbounded.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
48.
MOTOR VIBRATION SIGNAL GENERATION METHOD AND APPARATUS, COMPUTER DEVICE, AND STORAGE MEDIUM
Disclosed in embodiments of the present invention is a motor vibration signal generation method, comprising: acquiring initial data of a motor, the initial data comprising target center frequency, boundary condition values and nonlinear parameters of a motor vibrator; calculating a target displacement signal of the motor by using a motor nonlinear positive model according to the target center frequency, an initial displacement starting point, an initial displacement end point, and the nonlinear parameters; and performing, on the basis of the target displacement signal and the nonlinear parameters, calculation by using a motor nonlinear inverse model, to obtain a target excitation voltage signal of the motor. Since the target excitation voltage signal is obtained by calculation by means of the motor nonlinear inverse model on the basis of the target center frequency, the calculation accuracy of the target excitation voltage signal is ensured, and the motor is driven using the target excitation voltage signal so that the motor vibrates at the target center frequency. Therefore, the motor vibration signal is short, the vibration sense is strong, the frequency is diversified, the tactile effect of the motor is improved, and the precise control of motor vibration is achieved.
A method and apparatus for measuring parameters of a motor model, an electronic device, and a medium. The method comprises: obtaining a voltage signal and a current signal of a motor in a working state, a vibrator of the motor vibrating in two directions (101); obtaining a preset frequency spectrum impedance expression of a motor model, the frequency spectrum impedance expression being determined according to the mapping relationship between kinetic parameters of the motor in the two directions and the mapping relationship between the voltage and current of the motor (102); respectively substituting the voltage signal and the current signal into the frequency spectrum impedance expression to calculate and obtain a plurality of frequency spectrum impedance values of the motor (103); and according to the plurality of frequency spectrum impedance values of the motor, performing fitting calculation on the frequency spectrum impedance values of the motor by using a method of least squares to obtain target frequency spectrum impedance parameters of the motor model (104).
The present application relates to the technical field of electromagnetic motion, and provides a vibration motor. According to the vibration motor, respectively providing two stator assemblies at the two sides of a vibrator assembly prevents the vibrator assembly from being arranged around the stator assembles, reduces the complexity of arranging and designing coils on the vibration motor, and can reduce the size of the vibration motor; moreover, the coils, a circuit board, and a first magnetic conduction sheet are sequentially stacked on a housing, and therefore, the present application is simple to assemble, and can improve the assembling efficiency and reduce the manufacturing cost.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
51.
LOUDSPEAKER CABINET AND ASSEMBLING PROCESS THEREFOR
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises: a sound production unit provided with a vibration system, a magnetic circuit system and a basket; a front cover provided with an accommodating recess; and a rear cover fixed to the front cover. The sound production unit is accommodated in the accommodating recess; the vibration system vibrates in a vibration direction and comprises a diaphragm fixed to the basket; the front cover comprises a base wall supporting the sound production unit, and a plurality of side walls which extend from the edge of the base wall and form the accommodating recess together jointly with the base wall; and one of the plurality of side walls is provided with a window communicating with the accommodating recess. The loudspeaker cabinet further comprises a supporting member fixed to the vibration system, the supporting member comprising a body clamped between a first diaphragm and the base wall, and a frame connected to the body and fixed to the side wall having the window. The body, the sound production unit and the base wall jointly form a first channel; the frame, the base wall and the side wall having the window jointly form a second channel; the second channel and the first channel jointly form a front cavity communicating with the window; and the supporting member, the sound production unit, the front cover and the rear cover jointly form a closed rear cavity. According to the loudspeaker cabinet, the space of the rear cavity is enlarged by the arrangement of the body and the frame, the rear cavity is maximized, and the acoustic performance is improved.
H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises a shell with an accommodating space, and a sound production unit. The shell comprises a plastic member and a reinforcing rigid body injected to the plastic member. The plastic member comprises a bottom wall connected to the reinforcing rigid body, and a retaining wall connected to the bottom wall. The loudspeaker cabinet further comprises a soldering lug for electrically connecting the sound production unit to an external circuit. The soldering lug comprises a main body portion, a first electric connection portion extending out of the accommodating space from the main body portion, and a second electric connection portion extending from the main body portion and electrically connected to the sound production unit. The plastic member further comprises an enclosure wall extending from the bottom wall and far away from the reinforcing rigid body; the enclosure wall is spaced from the retaining wall by a certain distance and surrounds the main body portion; and the enclosure wall is bonded to the reinforcing rigid body by means of glue. The loudspeaker cabinet provided in the present invention is low in cost, simple to assemble and high in terms of assembling stability.
Provided by the present invention is a speaker enclosure, comprising a first housing, a second housing assembled with said first housing to form an accommodating cavity, and a sound-emitting unit disposed in said accommodating cavity; said sound-emitting unit divides said accommodating cavity into a front cavity and a rear cavity; said first housing comprises a bottom wall arranged opposite to said second housing and a side wall bending and extending from the outer circumference of said bottom wall in the direction of the second housing; said side wall is stretched in the direction away from said accommodating cavity to form a step part; said step part comprises a step surface facing said second housing; the second housing is welded and fixed to said step surface and enclosed with the side wall to form a glue accommodating groove. The housing of the speaker enclosure provided by the present invention can retain complete edges, such that the problem of glue spillage does not occur during gluing and sealing of the housing.
Provided in the present utility model is a speaker housing, comprising: a housing, which is provided with an accommodating space and provided with a holed area; a sound-producing unit, which is accommodated within the accommodating space and divides the accommodating space into a front acoustic cavity and a rear cavity, the holed area being provided with a powder filling hole linking the rear cavity to the external environment and a leaking hole spaced apart from the powder filling hole; a sound-guiding channel, which is formed on the inner side of the housing and links the front acoustic cavity to the external environment and jointly forms a front cavity; a sealing member, which is attached to the holed area, seals the powder filling hole, and is provided with a through hole corresponding to the leaking hole and exposing the leaking hole; and an air-permeable spacer, which is attached to the sealing member and completely covers the through hole. The present utility model increases the efficiency of powder filling, reduces automated line processes, and reduces production costs.
The present application relates to the field of electroacoustic conversion, and provides a loudspeaker. The loudspeaker comprises a vibration system, a magnetic circuit system, and a basket. The magnetic circuit system has a magnetic gap. The vibration system comprises a voice diaphragm fixed to the basket, a skeleton fixed to the side of the voice diaphragm facing the magnetic circuit system, and a voice coil suspended in the magnetic gap by means of the skeleton. The voice diaphragm comprises a dome and an upper vibrating diaphragm disposed around the dome. The dome is connected to the upper vibrating diaphragm by means of the skeleton. The dome is provided with a first gluing region overlapping the skeleton, and the skeleton is provided with a second gluing region overlapping the dome. At least one of the first gluing region and the second gluing region is provided with a recess, and the first gluing region and the second gluing region are connected by means of a gluing layer. According to the loudspeaker, by forming a recess in at least one of the first gluing region located on the dome and the second gluing region located on the skeleton, the gluing area between the dome and the skeleton can be increased, thereby improving the connection strength between the dome and the skeleton.
The present application relates to the technical field of electromagnetic motion, and provides a linear motor. According to the linear motor, magnetic steels are arranged on two sides of the magnetic axis of a stator assembly, so as to prevent the magnetic steels arranged opposite to and spaced apart from end portions of the stator assembly from generating attraction force to the stator assembly; each magnetic steel comprises a first magnetic steel section and second magnetic steel sections located on two sides of the first magnetic steel section, and the magnetic field strength of the first magnetic steel section on the magnetic axis is greater than the magnetic field strength of the second magnetic steel sections on the magnetic axis, such that the second magnetic steel sections generate small attraction force to the stator assembly, thereby effectively reducing the static attraction force of a magnetic circuit formed by the magnetic steels and the stator assembly and then increasing the overall rigidity of the linear motor.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
Provided is a sound production device. The sound production device comprises an outer metal ring, a vibration system fixedly connected to the outer metal ring, and a magnetic circuit system with a magnetic gap. The vibration system comprises a diaphragm fixed to the outer metal ring, a framework fixed to the side of the diaphragm facing the magnetic circuit system, and a voice coil inserted into the magnetic gap by means of the framework; the diaphragm comprises a first diaphragm located in the middle and second diaphragms surrounding the first diaphragm at intervals; the framework is connected to the first diaphragm and the second diaphragms; the outer edges of the second diaphragms are fixed to the outer metal ring; the diaphragm further comprises a dome clamped between the first diaphragm and the framework in the vibration direction; and the dome, the first diaphragm and the framework are integrally formed by means of hot pressing. According to the sound production device, the assembling process of an automatic line is simplified, the production period is shortened, and the production efficiency is higher; and moreover, the vibration mass is reduced, the sound quality of the sound production device is improved, and the medium-frequency sensitivity is improved.
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises: a front cover; a rear cover matching with the front cover to form an accommodating cavity; and a sound production unit and an air-permeable isolation cover, which are arranged in the accommodating cavity. The front cover is provided with a bottom wall and a supporting wall. The air-permeable isolation cover separates the sound production unit from the rear cavity. The sound production unit comprises a frame, a vibration system and a magnetic circuit system respectively fixed on the frame, and an elastic supporting member; the elastic supporting member comprises an auxiliary diaphragm; the auxiliary diaphragm comprises a first fixing portion connected to the frame, a second fixing portion connected to the vibration system, and a folding ring portion connected to the first fixing portion and the second fixing portion; and the folding ring portion protrudes in the direction of the air-permeable isolation cover. The air-permeable isolation cover comprises a cover body attached to the magnetic circuit system, a gluing portion fixed on the supporting wall, and a collapse portion connected to the cover body and the gluing portion; and the cover body is closer to the rear cover relative to the collapse portion, the orthographic projection of the folding ring portion on the air-permeable isolation cover is located in the range of the collapse portion, and when the auxiliary diaphragm vibrates, the folding ring portion does not collide with the collapse portion.
The present invention provides a loudspeaker box, comprising a housing having an accommodating space and a sound production unit having a diaphragm. The sound production unit is accommodated in the housing and provided with a bonding pad electrically connected to an external circuit. The loudspeaker box further comprises a soldering sheet, the soldering sheet comprises a body portion fixed to the housing as well as a fixed terminal and a conductive terminal provided at two opposite ends of the body portion, the fixed terminal is located in the accommodating space and electrically connected to the bonding pad, the conductive terminal extends outside the accommodating space and is electrically connected to the outside, the fixed terminal comprises a first connection section connected to the body portion and perpendicular to the body portion and a second connection section perpendicular to the first connection section, and the second connection section is soldered and fixed to the bonding pad. Moreover, the present invention further provides an assembly method for the loudspeaker box. According to the loudspeaker box and the assembly method therefor provided by the present invention, the structure is compact in the vibration direction, and the falling performance is excellent.
The present invention provides a speaker box, comprising a housing having an accommodating space and a sound-generating unit accommodated in the accommodating space. The sound-generating unit comprises a diaphragm, the diaphragm dividing the accommodating space into a front cavity and a rear cavity, and the sound-generating unit is further provided with a pad for electrically connecting with an external circuit. The speaker box further comprises an air-permeable spacer covered on the sound-generating unit, the air-permeable spacer being located in the rear cavity, and the air-permeable spacer comprising an air-permeable spacer body and an insulating layer coated on the air-permeable spacer body.
The present invention provides a loudspeaker box, comprising a front cover, a rear cover which is assembled with the front cover to form an accommodating cavity, and a sound generating unit and an air-permeable isolation cover provided in the accommodating cavity. The front cover is provided with a bottom wall and a support wall; the air-permeable isolation cover separates the sound generating unit from a rear cavity; the sound generating unit comprises a basket, and a vibration system and a magnetic circuit system respectively fixed to the basket, and an elastic support member; the elastic support member comprises a flexible circuit board; the flexible circuit board comprises a holding portion connected to the basket, a bonding portion connected to the vibration system, and an elastic arm which connects the holding portion and the bonding portion; the air-permeable isolation cover comprises a cover body attached to the magnetic circuit system, a gluing part fixed on the support wall, and a collapsing part which connects the cover body and the gluing part; the cover body is closer to the rear cover relative to the collapsing part; a positive projection of the elastic arm on the air-permeable isolation cover is located within the range of the collapsing part; and the elastic arm does not collide with the collapsing part when the flexible circuit board vibrates.
The present invention provides a loudspeaker box, comprising a housing and a sound production unit that is accommodated in the housing and comprises a vibration diaphragm. The housing comprises a front cover and a rear cover that covers the front cover; the front cover comprises a supporting member that supports the side of the sound production unit having the vibration diaphragm, a sound guide channel that is injection molded and fixedly connected to the supporting member, and a connection member that fixedly connects the supporting member and the rear cover; the supporting member comprises a bottom wall that is provided opposite to the vibration diaphragm at an interval, a supporting wall that is bent and extends from the bottom wall towards a direction close to the sound production unit and supports the sound production unit, and blocking walls that extend from the supporting wall towards the direction of the rear cover and is provided around the periphery of the sound production unit; the rear cover, the supporting member, and the connection member are made of a metal material; the sound production unit, the supporting member, and the connection member together define a front cavity; the sound guide channel communicates the front cavity with the outside; and the sound production unit, the front cover, and the rear cover together define a closed rear cavity. The loudspeaker box provided by the present invention is provided with a metal connection member and the rear cover, the supporting member and the sound guide channel are additionally arranged, and the rear cavity is maximized, thereby improving the acoustic performance.
A ring array magnetic steel system and a magnetic positioning system. The magnetic positioning system comprises a first body (3), a second body (4), and a ring array magnetic steel system; the ring array magnetic steel system comprises a first magnetic ring (1) having a first central axis (10) and a second magnetic ring (2) having a second central axis (20); the first magnetic ring (1) comprises a first magnetic attraction unit (11) arranged around the first central axis (10); the first magnetic attraction unit (11) comprises a first magnetic steel (111), a second magnetic steel (112), a third magnetic steel (113) and a fourth magnetic steel (114) arranged around the first central axis (10) and connected in sequence; the magnetic pole directions of the first magnetic steel (111) and the third magnetic steel (113) are opposite and both are arranged around the first central axis (10); the magnetic pole directions of the second magnetic steel (112) and the fourth magnetic steel (114) are opposite, and the magnetic pole arrangement directions are parallel with the first central axis (10); the second magnetic ring (2) comprises a second magnetic attraction unit (21); the second magnetic attraction unit (21) comprises a fifth magnetic steel (211), a sixth magnetic steel (212), a seventh magnetic steel (213) and an eighth magnetic steel (214) arranged in one-to-one correspondence to the first magnetic attraction unit (11). The magnetic positioning system can better satisfy requirements of accurate positioning.
Provided is a mold. The mold comprises a first sub-mold and a second sub-mold, the first sub-mold and the second sub-mold having a first direction along the thickness direction of the mold, and the first sub-mold and the second sub-mold being capable of being closed or opened in the first direction. The mold is characterized in that the first sub-mold comprises a body and a first protrusion arranged on the body, and a first recess is formed in the first protrusion; a second recess matching with the first protrusion is formed in the second sub-mold, a second protrusion matching with the first recess is arranged in the second recess, and the second protrusion is provided with at least one side surface inclined in the first direction; and when the first sub-mold and the second sub-mold are closed, the first protrusion is located in the second recess, the second protrusion is located in the first recess, and the side surface of the second protrusion inclined in the first direction abuts against a side wall in which the first recess is formed. According to the mold provided by the present invention, the service life of the mold can be prolonged, and furthermore, the precision of the mold is improved.
An MEMS gyroscope, comprising an annular structure (10) and a plurality of mass blocks (20) uniformly distributed around the center circumference of the annular structure (10) and connected to the inner side or the outer side of the annular structure (10) by means of first connecting portions (30); two adjacent mass blocks (20) are connected by means of a second connecting portion (50), the mass blocks (20) are connected to anchor points (60) by means of elastic structures (80); and the annular structure (10) is a regular 4N-pointed star, and the number of mass blocks (20) is 4N, wherein N is an integer, and N ≥ 2. The MEMS gyroscope adopts a star shape of a multi-segment straight line configuration, and the straight line configuration enables a uniform Young's modulus to be presented on the inner sides of the star, and finally the Young's modulus uniformity of the star structure is improved, so that various isotropic characteristics of vibration of the star-shaped axisymmetric structure can be better exerted, the driving mode and the detection mode have a smaller frequency difference, and a higher sensitivity is achieved. Furthermore, the mass blocks (20) participating in angular velocity sensitivity are distributed in a non-sensitive limiting region of the MEMS gyroscope, allowing for a greater Coriolis force, greatly increasing the area utilization rate of the chip and increasing the sensitivity of the sensor.
G01C 19/56 - Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces
G01C 19/5719 - Turn-sensitive devices using vibrating masses, e.g. vibratory angular rate sensors based on Coriolis forces using planar vibrating masses driven in a translation vibration along an axis
The present invention provides a loudspeaker box and an assembly process therefor. The loudspeaker box comprises a sound production unit, a front cover made of a metal material, a bracket which is fixedly supported on the front cover and integrally injection-molded, and a rear cover made of a metal material; the bracket comprises a support body for supporting the sound production unit and an outer connection body which is connected to the support body to define an annular through hole, the outer connection body being provided with a sound guide channel penetrating through the outer connection body; the rear cover covers the front cover and the outer connection body and defines a housing having an accommodation space together with the front cover and the outer connection body; the sound production unit and the support body are accommodated and fixed in the accommodation space of the housing; the front cover, the support body, and the sound production unit jointly define a front sound cavity; the front sound cavity is communicated with the outside by means of the sound guide channel; and the sound production unit, the outer connection body, the support body, and the rear cover jointly define a rear sound cavity. According to the loudspeaker box of the present invention, the volume of the cavity in the housing can be increased, and the volume of the rear sound cavity defined by the sound production unit and the housing is increased, such that the acoustic performance, especially the low-frequency acoustic performance, of the loudspeaker box is improved.
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises a shell with an accommodating space, a sound production unit accommodated in the shell and dividing the accommodating space into a front cavity and a rear cavity, and a soldering lug. The sound production unit comprises a diaphragm, a voice coil for driving the diaphragm to vibrate and produce sound, and a flexible circuit board electrically connected to the voice coil; the shell is further provided with a bottom wall which is opposite to the diaphragm and forms the front cavity with the diaphragm in an enclosing manner; a boss is formed by extending from the bottom wall to the interior of the rear cavity; the soldering lug is provided with an electrical connection portion fixed on the boss; the flexible circuit board extends to form a solder pad parallel to the bottom wall; the solder pad is arranged on the electrical connection portion; a through hole is formed in the solder pad in a penetrating manner; a protrusion penetrating through the through hole is arranged on the electrical connection portion; and the protrusion is tin-soldered to the solder pad. According to the loudspeaker cabinet provided in the present invention, it is ensured that the soldering lug and the flexible circuit board bear a certain pulling force in the horizontal direction, and furthermore, by means of the structure of the protrusion, a superficial area in contact with a tin layer is increased, thereby ensuring that the soldering lug and the flexible circuit board have good soldering and conduction effects.
Provided is a sound production device, comprising a frame, a vibration system and a magnetic circuit system for driving the vibration system to vibrate to produce sound, the vibration system and the magnetic circuit system being fixed to the frame. The magnetic circuit system is provided with a magnetic gap. The vibration system comprises a vibrating diaphragm fixed to the frame, a framework fixed to the vibrating diaphragm, and a voice coil inserted into the magnetic gap and connected to the framework. The framework comprises a bottom wall fixed to the vibrating diaphragm and provided with a pair of long shaft portions and a pair of short shaft portions, and a pair of side walls bending and extending towards the magnetic circuit system from outer edges of the pair of the short shaft portions of the bottom wall. An opening portion is provided in the side of each side wall that is close to a long shaft portion, and is provided with a first through hole. The vibrating diaphragm is connected to the opening portion and is partially accommodated in the first through hole. According to the sound production device, the underflow of the material of the vibrating diaphragm during a forming process can be effectively ameliorated, such that the connecting positions between the side walls and elastic conductive members cannot be contaminated, and therefore, the risk of the side walls and the elastic conductive members not being stably glued is reduced.
The present invention provides a loudspeaker box and an assembly process therefor. The loudspeaker box comprises a housing and a sound production unit accommodated in the housing; the housing comprises a front cover made of a metal material, a support fixed to the front cover, and a rear cover made of a metal material; the support comprises a support body made of a metal material for supporting the sound production unit and an outer connector injection-molded on the support body, the support body is recessed distant from the sound production unit to form an accommodating tank and defines a front acoustic cavity together with the sound production unit, the outer connector is provided with a sound guide channel passing through the outer connector, and the sound guide channel communicates the front acoustic cavity with the outside; and the sound production unit, the support, and the rear cover jointly define a rear acoustic cavity. The loudspeaker box of the present invention can increase the volume of a cavity in the housing and increase the volume of the rear acoustic cavity defined by the sound production unit and the housing, thereby improving the acoustic performance of the loudspeaker box, in particular the low-frequency acoustic performance.
Provided are an elastic member and a vibration motor, relating to the technical field of electromagnetic motion. The elastic member comprises a plurality of elastic sheets which are sequentially arranged in a first direction and are connected in an end-to-end manner, a deformation area is formed between every two adjacent elastic sheets, and the elastic sheets get close to or get away from one another to change the sizes of the deformation areas, so that a restoring force is provided for a vibrator assembly; each elastic sheet comprises an elastic arm and fixing portions located at two ends of the elastic arm, every two adjacent elastic sheets are symmetrically arranged and are connected by means of corresponding fixing portions, so that the connecting positions among the adjacent elastic sheets are connected into a whole by means of the fixing portions, thereby solving the problems of large occupied space, high forming stress and great forming difficulty caused by the fact that a large-sized round corner is formed.
H02K 33/02 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
H02K 33/18 - Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with coil systems moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnets
The present invention provides a sound production device, comprising a frame as well as a vibration system and a magnetic circuit system that are fixedly connected to the frame. The vibration system comprises a diaphragm and a voice coil for driving the diaphragm to vibrate; the diaphragm comprises a dome stacked with the voice coil in the vibration direction of the voice coil and a skeleton located at the periphery of the dome and spaced apart from the dome; the dome comprises a main body portion and a position-limiting portion that extends from the main body portion to the voice coil and is connected to the voice coil; the main body portion has an outer surface facing away from the voice coil and an inner surface facing towards the voice coil; the skeleton comprises a first connection portion and a second connection portion that is connected to the first connection portion in a bending manner; the first connection portion has a first surface and a second surface that are arranged oppositely in a first direction from the outer surface to the inner surface; the first surface is flush with the outer surface; a gap is formed between the main body portion and the first connection portion; the gap is filled with a glue layer to connect the dome to the first connection portion and seal the gap. According to the sound production device of the present invention, the thickness of the sound production device can be reduced.
Provided in the present invention is a sound-producing apparatus, comprising a basket and a vibration system and a magnetic circuit system fixedly connected to the basket, the vibration system comprising a diaphragm and a voice coil driving the diaphragm to vibrate, the diaphragm comprising a dome, a main voice membrane positioned on the outer periphery of the dome, and a skeleton supporting the dome and the main voice membrane, the skeleton having a first connecting part connected to the dome and a second connecting part extending in a bent manner from the outer peripheral edge of the first connecting part along the direction of vibration of the sound-producing apparatus toward the magnetic circuit system, the first connecting part having a first surface and a second surface arranged opposite to one another along the direction of vibration of the sound-producing apparatus, the first surface being furthest from the magnetic circuit system, and the dome comprising a main body part stacked with the second surface and a limiting part extending from the main body part toward the voice coil and abutting the voice coil. The sound-producing apparatus of the present invention enables the assembly procedure to be simplified.
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises a front cover, a sound production unit fixed on the front cover and provided with a solder pad, and a soldering lug electrically connected to the solder pad; the loudspeaker cabinet further comprises an air-permeable isolation member arranged in a covering manner on the side of the sound production unit far away from the front cover; the air-permeable isolation member comprises an air-permeable isolation member body, and a side wall bent and extending from the periphery of the air-permeable isolation member body to the front cover; at least part of the side wall is connected to the front cover; the soldering lug is located between the front cover and the side wall of the air-permeable isolation member; and an insulating layer is arranged at the position in the side wall corresponding to the soldering lug. By means of the arrangement of the insulating layer, the risk of short circuiting caused by contact between the soldering lug and the air-permeable isolation member after welding can be effectively avoided, and the safety and reliability of the loudspeaker cabinet are improved.
The present invention provides a loudspeaker box, comprising a housing having an accommodation space and a sound emitting unit having a diaphragm, wherein the sound emitting unit is provided with pads electrically connected to an external circuit; each pad is provided with a conductive portion; a through hole is arranged on the surface of the pad; the through hole penetrates through the conductive portion, and further comprising soldering sheets, each soldering sheet comprising a main body portion fixed to the housing, and a conductive terminal and a fixed terminal which respectively extend from both opposite ends of the main body portion. The conductive terminal extends out of the accommodation space and forms an electrical connection to the external circuit. The fixed terminal is located in the accommodation space. The conductive portions are stacked on the fixed terminals along the vibration direction of the diaphragm, and the fixed terminals are fixed to the conductive portions by tin soldering in the through holes. The loudspeaker box provided by the present invention has the advantages of high assembly efficiency, low cost, and good reliability.
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises a shell having an accommodating space, and a sound production unit having a diaphragm. The sound production unit is accommodated in the shell; the diaphragm divides the accommodating space into a front cavity and a rear cavity; the shell is further provided with a bottom wall opposite the diaphragm and forming, in an enclosing manner, the front cavity with the diaphragm, and a retaining wall surrounding the sound production unit; the sound production unit is provided with a flexible circuit board used for being electrically connected to an external circuit and provided with a solder pad; the loudspeaker cabinet further comprises a soldering lug, the soldering lug comprising a second electric connection portion electrically connected to the solder pad; a channel portion is arranged on the side of the retaining wall close to the second electric connection portion; and the flexible circuit board further comprises a bent portion extending out of the sound production unit, and the bent portion penetrates through the channel portion and is connected to the solder pad. Compared with the prior art, according to the loudspeaker cabinet, the channel portion is arranged on the retaining wall, so that the volume of the rear cavity is increased, thereby facilitating the arrangement of the flexible circuit board.
Provided is a loudspeaker cabinet. The loudspeaker cabinet comprises a shell with an accommodating space, and a sound production unit accommodated in the accommodating space and provided with a solder pad, wherein the shell is provided with a top wall, a bottom wall opposite the top wall, and side walls for connecting the top wall to the bottom wall; the top wall, the bottom wall and the side walls form the accommodating space together in an enclosing manner; the loudspeaker cabinet further comprises a soldering lug for electrically connecting the solder pad to an external circuit; the soldering lug comprises a first electric connection portion electrically connected to the solder pad, a main body portion extending from the first electric connection portion and fixed on the bottom wall by means of injection molding, and a second electric connection portion extending from the main body portion to the outside of the accommodating space and fixed on the bottom wall by means of injection molding; and the second electric connection portion is electrically connected to the external circuit.
The present invention provides a sound production device, comprising a basket, and a vibration system and a magnetic circuit system for driving the vibration system to vibrate to produce sound that are separately fixed on the basket. The magnetic circuit system comprises a magnetic gap; the vibration system comprises a vibration diaphragm fixed on the basket, a skeleton injection molded and fixed on the vibration diaphragm, and a voice coil inserted into the magnetic gap and connected to the skeleton; the skeleton comprises a bottom wall fixed on the vibration diaphragm and having a pair of long-shaft portions and a pair of short-shaft portions, and a pair of side walls that are respectively bent and extend from the outer edges of the short-shaft portions of the bottom wall towards a direction close to the magnetic circuit system; the side of each side wall close to each long-shaft portion is provided with an unfilled corner portion; the side wall comprises a bottom portion close to the bottom wall and a top portion distant from the bottom wall; and the unfilled corner portion comprises a bevel edge obliquely extending towards the bottom portion from the top portion. The sound production device can improve the problem of deformation of the skeleton in a molding process in a mold, thereby improving the flatness of the molded skeleton.
Provided is a loudspeaker. The loudspeaker comprises a connecting member, and a magnetic circuit assembly and a vibration assembly which are fixed to the connecting member. The vibration assembly comprises a first diaphragm fixed to the connecting member and a voice coil for driving the first diaphragm to vibrate and produce sound. The magnetic circuit assembly comprises a magnetic steel assembly for providing a driving force for the voice coil, and an installation member for fixing the magnetic steel assembly. An edge of the installation member is bent towards the first diaphragm to form a bent portion, and the bent portion is fixedly connected to the connecting member. By using the structure, the first diaphragm is fixedly connected to the installation member, so that the overall strength of the loudspeaker is enhanced, deformation of the loudspeaker in the vibration direction is avoided, and the quality of the loudspeaker is thus improved.
The present invention provides an antenna device and a mobile terminal. The antenna device comprises a metal frame; a first gap is formed on the metal frame; the metal frame is divided into a first metal section and a second metal section by means of the first gap; the first metal section, the first gap, and the second metal section together form a 4G antenna and a Sub 6G antenna. According to the antenna device in the present invention, the first metal section, the first gap, and the second metal section together form a 4G antenna and a Sub 6G antenna, the 4G antenna and the Sub 6G antenna formed on the metal frame do not need to occupy the layout space inside a mobile terminal, no separate clearance area needs to be provided for the antennas, and the 4G antenna and the Sub 6G antenna can share the first metal section, the first gap, and the second metal section; thus, the antenna design of the mobile terminal can be simplified.
Provided is a sound production device. The sound production device comprises a basket, and a vibration system and a magnetic circuit system which are fixedly connected to the basket. The vibration system comprises a diaphragm, a framework and a voice coil for driving the diaphragm to vibrate; the diaphragm comprises a dome and a main voice diaphragm which are sequentially arranged in a stacked manner; the main voice diaphragm comprises a folding ring portion, a first fixing portion located on the inner side of the folding ring portion, and a second fixing portion located on the outer side of the folding ring portion; the first fixing portion is provided with a first surface facing the dome, and a second surface facing away from the dome; the dome comprises a main body portion and a connecting portion extending out of the main body portion; the first surface is completely connected to the connecting portion of the dome; the second fixing portion is connected to the basket; the framework comprises a first connecting portion, and a first connecting sub-portion and a second connecting sub-portion which are connected to two sides of the first connecting portion and are arranged opposite each other, and the first connecting portion is connected to the second surface. According to the sound production device, the dome is maximized, and the sound production effect can be improved.
A pipe shrinking die (10) and a hot pipe (20), the pipe shrinking die (10) being used for shrinking the hot pipe (20). The pipe shrinking die (10) comprises: a fixed die (11), which is provided with a first end (101) and a second end (102) which are oppositely arranged, the first end (101) being provided with a first counterbore (111), the second end (102) being provided with a second counterbore (112), and the second counterbore (112) communicating with the first counterbore (111) by means of a first channel (113); a die core (12), which is fixed within the first counterbore (111), the die core (12) being provided with a second channel (120) which communicates with the first channel (113) and the diameter of which gradually decreases along the direction of the first end (101) pointing to the second end (102); and a guide pin (13), which is fixed within the fixed die (11). The axes of the first counterbore (111), the second counterbore (112), the first channel (113) and the second channel (120) along the axial direction of the first end (101) pointing to the second end (102) are co-linear.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
The present application provides a piezoelectric microphone, comprising at least one piezoelectric assembly. The piezoelectric assembly comprises a substrate having a back cavity, a diaphragm, and a piezoelectric unit. The diaphragm is fixedly connected to the substrate, a piezoelectric hole is provided on the diaphragm, and the piezoelectric unit is embedded in the piezoelectric hole. In the present application, the piezoelectric hole is provided on the diaphragm, and the piezoelectric unit is embedded in the piezoelectric hole, thereby reducing the difficulty of the manufacturing process and improving the sensitivity, and also improving the resonant frequency of the piezoelectric microphone.
A method and apparatus for generating a vibration effect, and a terminal device and a storage medium. The method comprises: acquiring a vibration data stream (101); acquiring a position and a size of a local peak point on an envelope curve of the vibration data stream (102); acquiring an intensity value of the vibration data stream according to the size of the local peak point (103); acquiring a spectrum curve of an adjacent local peak point according to the position of the local peak point (104); acquiring a sharpness value according to the frequency at which a peak point on the spectrum curve is located (105); and writing a correlation between the intensity value and the sharpness value into a file that can be identified by a corehaptics interface (106). By means of the method, the time consumption and labor cost of data conversion can be reduced.
The present invention provides an antenna module and a mobile terminal. The antenna module comprises a feed source, a system ground, a first radiator and a second radiator, the first radiator being spaced apart from the second radiator, and the second radiator being connected to the system ground. The first radiator comprises a first radiation part and a second radiation part, which are spaced apart, the first radiation part being located between the second radiation part and the second radiator. The feed source is electrically connected to the first radiation part, and the feed source is used for providing an excitation signal to the first radiation part, so that the first radiator and the second radiator jointly generate a first resonance, a second resonance and a third resonance. The antenna module of the present invention can radiate more frequency bands and is smaller in size.
The present invention provides an antenna module and a mobile terminal. The antenna module comprises a system ground, a first radiator, a second radiator, a third radiator, a first decoupling circuit, and a second decoupling circuit. The first decoupling circuit is electrically connected to the second radiator, the second decoupling circuit is coupled between the first radiator and the second radiator, and/or the second decoupling circuit is coupled between the second radiator and the third radiator. The antenna module of the present invention may transmit a wireless signal in a frequency band ranging from 3300 MHz to 5000 MHz.
A vibration generation method and apparatus, a vibration control method and system, an electronic device, and a storage medium. The vibration generation method comprises: step S22, identifying an audio beat in an audio signal; step S24, obtaining a plurality of note energies of the audio signal according to the audio beat; step S26, respectively performing normalization preprocessing on the plurality of note energies to obtain a plurality of normalized energies; and step S28, generating, according to the plurality of normalized energies, a haptic vibration file corresponding to the audio signal. By adoption of the method, the haptic vibration effect can be flexibly matched with the beat of the audio signal, and the matching accuracy is high.
G10H 1/00 - ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE - Details of electrophonic musical instruments
The present disclosure relates to a signal conversion method and apparatus, a computer device and a storage medium. The method comprises: acquiring a signal file to be converted; when the signal file to be converted is detected to contain valid data for representing a haptic sensation signal, acquiring segment information of at least one haptic sensation signal segment from the signal file to be converted, wherein the segment information comprises segment intensity and segment duration; and mapping the at least one haptic sensation signal segment into a target signal template according to the segment intensity and the segment duration to obtain a target sine wave signal, wherein the target sine wave signal contains a target signal segment corresponding to at least one haptic sensation signal segment, and the segment intensity, segment number and segment duration of the target signal segment correspond to the segment intensity, segment number and segment duration of the haptic sensation signal segment in the signal to be converted on a one-to-one basis. The method is capable of converting an excitation signal generating a high-end haptic effect to a sine wave signal generating a low-end effect.
A method and apparatus for responding to a vibration event, an electronic device, and a storage medium, relating to the technical field of electronic devices. According to the method, generation and playback of multi-event mixed vibration feelings can be automatically performed in real time when multi-vibration events occur simultaneously. The method comprises: in response to the fact that a current vibration event is detected and vibration feelings triggered by other vibration events exist at the current time point, the electronic device determines the priorities corresponding to all the vibration events comprising the current vibration event and the other vibration events; and then on the basis of the priorities, the electronic device selects, from all the vibration events, vibration feelings corresponding to at least two vibration events for mixing to obtain a mixed vibration feeling, thereby driving a vibrator of the electronic device by means of a driving voltage having a corresponding waveform to play back the mixed vibration feeling.
Provided is an MEMS microphone chip. The MEMS microphone chip comprises a base having a back cavity, and a capacitor structure arranged on the base, wherein the capacitor structure comprises a vibrating diaphragm fixed to the base, and a back plate arranged spaced apart from the vibrating diaphragm; at least one of the side of the back plate that is close to the vibrating diaphragm and the side of the vibrating diaphragm that is close to the base is provided with an insulating protrusion; and the insulating protrusion comprises a plurality of first protrusion portions and second protrusion portions that are arranged at intervals, and the height of the first protrusion portions is greater than the height of the second protrusion portions. By means of the present utility model, the adhesion between a vibrating diaphragm and a back plate or a base can be effectively reduced, thereby preventing a failure from occurring on a microphone.
A motor armature and a winding method therefor, and a motor. The motor armature (100) comprises an iron core (10) having a first end face (110) and a second end face (111) opposite to each other, and a winding (20) comprising coils (201) and gap bridge wires (202); the iron core (10) comprises a yoke portion (101) and tooth portions (102) arranged around the yoke portion (101); the tooth portions (102) comprise at least two winding teeth (10201) for forming the coils (201) and a crossing tooth group arranged between two adjacent winding teeth (10201) and used for forming the gap bridge wire (202); the crossing tooth group at least comprises one crossing tooth (10202); the gap bridge wire (202) comprises at least one first wire crossing portion (2021) formed by a first crossing line segment (20211), a second crossing line segment (20212) and a third crossing line segment (20213) connected in sequence, wherein the second crossing line segment (20212) extends on a crossing tooth along the second end face (111), the first crossing line segment (20211) extends towards the first end face (110) obliquely from one end of the second crossing line segment (20212), and the third crossing line segment (20213) extends towards the first end face (110) obliquely from the other end of the second crossing line segment (20212). The motor armature has characteristics of tight tension of gap bridge wires, high winding reliability, and the gap bridge wires occupying a small end face area, etc.
A motor armature (100), a motor, and a winding method for the motor armature (100). The motor armature (100) comprises an iron core (1) and a winding (2); the iron core (1) comprises a yoke part (11) and a tooth part (12); the winding (2) comprises coils (21) and a bridge line (22); the tooth part (12) comprises at least two winding teeth (121) and one spanning tooth set (122); the spanning tooth set (122) comprises spanning teeth (1221); and the bridge line (22) comprises a first cross line segment (221), a second cross line segment (222), and a third cross line segment (223) connected in sequence. The iron core (1) has a first end surface (13) and a second end surface (14), the second cross line segment (222) extends along the second end surface (14) onto at least one spanning teeth (1221), the first cross line segment (221) obliquely extends from one end of the second cross line segment (222) toward the first end surface (13) and is connected to one coil (21), the third cross-line segment (223) obliquely extends from the other end of the second cross-line segment (222) towards the first end surface (13) and is connected to the other coil (21), and the first cross-line segment (221) and the third cross-line segment (223) are symmetrically arranged with regard to the perpendicular bisector of the second cross-line segment (222). The motor armature (100) can stabilize the bridge line (22) and also release the end surface area of the yoke part (11), providing process positioning and support is facilitated, and a tool can be simplified.
A micro water pump and an electronic apparatus. The micro water pump comprises a pump body (10) and a driving mechanism (20), wherein the pump body is provided with an inner cavity (101), a liquid inlet (102) communicating with the inner cavity, and a liquid outlet (103) communicating with the inner cavity; and the driving mechanism is mounted at the pump body so as to drive liquid to enter the inner cavity from the liquid inlet and to be discharged from the liquid outlet. The pump body comprises a base (11), an upper cover (12) and a sealing ring (13), wherein one of the base and the upper cover is provided with a first annular recess (121) that surrounds the outer side of the inner cavity; and the sealing ring is sandwiched between the base and the upper cover and is partially embedded in the first annular recess. The first annular recess comprises a recess bottom wall (1211) that faces the base or the upper cover. At least two first annular protrusions (131) are arranged, in a protruding manner, on the side of the sealing ring that faces the recess bottom wall; and at least one second annular protrusion (132) is arranged, in a protruding manner, on the side of the sealing ring that faces away from the first annular protrusions. The sealing ring of the micro water pump can form double or multiple seals, and has a good sealing effect; and by means of the sealing ring, a water flow channel can be lengthened, and the resistance against the outward leakage of liquid in the inner cavity is increased, such that a relatively good sealing effect is achieved.
Disclosed in the present utility model are a loudspeaker box and a mobile terminal. The loudspeaker box is applied to the mobile terminal. The mobile terminal has an outer shell for accommodating the loudspeaker box. The loudspeaker box comprises a housing having an accommodation space and a loudspeaker unit accommodated in the accommodation space. The housing comprises a bottom shell and a metal top plate covering the bottom shell and defining, with the bottom shell, the accommodation space; the metal top plate comprises a main body covering the end of a sidewall away from a bottom wall, and a connecting member extending outwards from the main body; a positioning portion penetrates through the connecting member; the outer shell extends towards the connecting member to form a hot melting column for supporting and fixing the connecting member; the connecting member is holt molten by the hot melting column and is then fixed to the outer shell. When the loudspeaker box of the present embodiment is assembled with the outer shell, the matching of the positioning portion on the connecting member and the hot melting column on the outer shell can achieve quick positioning, and the connecting member is fixed to the outer shell by means of the hot melting of the hot melting column, such that a stable connection between the loudspeaker box and the mobile terminal, and quick and secure mounting are achieved.
A steel sheet passivation process and a vapor chamber manufactured using a passivated steel sheet. The passivation process comprises the following steps: providing a steel sheet; pretreating the steel sheet to obtain a pretreated steel sheet; and immersing the pretreated steel sheet in a passivation solution for passivation treatment, and then cleaning and drying the steel sheet to obtain a passivated steel sheet. The passivation solution in the steel sheet passivation process comprises two types of substances, i.e., benzene ring type organic and inorganic substances, and a passivation film formed on the passivated steel sheet prepared by means of the steel passivation process is a composite film layer comprising a carbon chain and an inorganic oxide. When the passivated steel sheet is used as a cover plate of the vapor chamber, the passivation film formed on the passivated steel sheet reduces the reaction of the passivated steel sheet with water, and compared with a steel sheet having a surface covered with a copper layer, this passivated steel sheet does not accelerate the reaction of steel with water due to the formation of primary cells between copper and the steel; therefore, the service life of the passivated steel sheet can be prolonged by about 2-7 times.
F28D 15/02 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes
95.
PIEZOELECTRIC MICROPHONE AND METHOD FOR MANUFACTURING SAME
Provided is a piezoelectric microphone. The piezoelectric microphone comprises a base having a back cavity, and a piezoelectric cantilever beam vibrating diaphragm fixed above the base, wherein the piezoelectric cantilever beam vibrating diaphragm at least comprises a first vibrating sub-diaphragm and a second vibrating sub-diaphragm; one end of each vibrating sub-diaphragm is fixed to the base, so as to form a fixed end, and the other end thereof is suspended above the back cavity, so as to form a movable end that is connected to the fixed end; and the width of the movable end is not less than the width of the fixed end. The piezoelectric microphone further comprises an elastic telescopic member, wherein one end of the elastic telescopic member is connected to the movable end of the first vibrating sub-diaphragm, and the other end thereof is connected to the second vibrating sub-diaphragm and/or the base. In the present application, the width of a movable end of a cantilever beam is not less than the width of a fixed end, such that a greater moment will be generated under the action of a sound pressure, thereby improving the signal-to-noise ratio of the microphone.
The embodiments of the present invention disclose a method for controlling overstroke of a linear motor, said method comprising: acquiring the maximum target acceleration value of the linear motor; acquiring a time domain threshold of the linear motor, the time domain threshold being the maximum acceleration of the linear motor when overstroke does not occur; when the maximum target acceleration value is greater than or equal to the time domain threshold, acquiring an excitation voltage corresponding to the time domain threshold; determining an adjustment range of the maximum input excitation voltage of the linear motor on the basis of the excitation voltage; controlling the maximum input excitation voltage to be within the adjustment range to drive the linear motor to vibrate, so as to avoid overstroke of the linear motor, thereby improving the haptic feedback effect of the linear motor, and improving the structural design efficiency. In addition, further proposed are an apparatus for controlling overstroke of a linear motor, a computer device and a storage medium.
The present invention provides a manufacturing method for a heat dissipation device, and a heat dissipation device. The manufacturing method for a heat dissipation device comprises: obtaining a first cover plate and a second cover plate made of steel plates; performing nanoprocessing on the first cover plate and/or the second cover plate to form a passivation layer on the surface of the first cover plate and/or the second cover plate; providing a capillary structure on the surface of the first cover plate on which the passivation layer is formed or the surface of the second cover plate on which the passivation layer is formed; and fitting and fixedly connecting the first cover plate to the second cover plate to form a closed cavity, the capillary structure being accommodated in the closed cavity, and the closed cavity being adapted to be filled with a cooling medium. The manufacturing method for a heat dissipation device provided by the present invention can meet lightening and thinning requirements for a vapor chamber.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
C23C 22/00 - Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
F28D 15/04 - Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls in which the medium condenses and evaporates, e.g. heat-pipes with tubes having a capillary structure
The present invention provides a sound production apparatus. The sound production apparatus comprises a basket, and a vibration system and magnetic circuit system that are fixedly connected on the basket. The vibration system comprises a diaphragm, a voice coil that drives the diaphragm to vibrate, and a flexible circuit board electrically connected to the voice coil. The voice coil comprises a voice coil body disposed in a hollow region, and a voice coil lead connected to the voice coil body. The sound production apparatus is characterized in that the flexible circuit board comprises a main body part that is located on the outer side of the voice coil, and a pad part that extends from the main body part to the hollow region of the voice coil. The projection of the pad part along the vibration direction of the diaphragm is at least partially located in the hollow region, and the voice coil lead is connected to the pad part. A voice coil lead and a pad part do not need to be provided on the outer side of the voice coil, and a space for soldering the voice coil lead and the pad part also does not need to be reserved on the outer side of the voice coil. The dimensions of the voice coil are no longer restricted by a soldering process and a larger voice coil circumference can be achieved, and the sound production performance of the sound production apparatus is improved.
A sound production device (100), comprising a support (1) as well as a vibration system (2) and a magnetic circuit system (3) which are fixedly connected to the support (1). The vibration system (2) comprises a first diaphragm (21), a second diaphragm (22) arranged opposite to the first diaphragm (21), a first voice coil (23) for driving the first diaphragm (21), and a second voice coil (24) for driving the second diaphragm (22); the magnetic circuit system (3) comprises an iron core (31), a magnet assembly (32) sleeved on the iron core (31), and a magnetic frame (33) sleeved on the magnet assembly (32); the first voice coil (23) is arranged between the magnetic frame (33) and the magnet assembly (32); the second voice coil (24) is arranged between the magnet assembly (32) and the iron core (31). Therefore, two sets of magnetic circuit structures are provided within the spatial range of the same magnetic frame (33), and the first diaphragm (21) and the second diaphragm (22) are respectively driven to vibrate towards different directions for sound production. The utilization efficiency of the magnetic circuit system (3) is improved while the space is saved, and thus the sound production performance of the sound production device (100) is improved.
Provided by the present invention is a sound producing apparatus, comprising a basket and a vibration system fixedly connected to the basket; the vibration system comprises a diaphragm and a voice coil driving the diaphragm to vibrate; the diaphragm comprises a dome and a sound film located at the periphery of the dome; the outer edge of the sound film is fixed to the basket; the basket comprises at least two sub-brackets, each sub-bracket is formed by bending a plate N times, and N being an integer greater than zero and less than four; each sub-bracket has two free ends after being bent and formed, and one free end of one of the sub-brackets is fixedly connected to one free end of the other sub-bracket to form a splicing area. The present invention can improve the stability of a basket in a sound producing apparatus.
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