A method for manufacturing a silicon nitride substrate is provided. The method comprises the steps of: preparing a ceramic composition containing a metal silicon powder and a crystalline phase control powder containing a rare earth element-containing compound and a magnesium-containing compound; manufacturing a sheet-shaped molded body of a slurry prepared by mixing a solvent and an organic binder with the ceramic composition; and performing heat treatment including a nitrification section where heat treatment is performed at a first temperature in the range of 1300-1500° C. together with the application of nitrogen gas to the molded body at a predetermined pressure and a sintering section where heat treatment is performed at a second temperature in the range of 1700-1900° C.
Disclosed is a multilayered common mode filter having first and second capacitance layers arranged on the top and bottom surfaces, respectively, of an electrode layer provided with a plurality of coil patterns that form two channels. The disclosed multilayered common mode filter comprises first and second capacitance layers, symmetric with an electrode layer interposed therebetween, wherein the first and second capacitance layers are in the form of ground patterns and capacitor patterns stacked in alternation, and, along with a pole formed by the coil patterns, an additional pole is formed by the capacitance layers and coil patterns to exhibit wideband characteristics.
H03H 1/00 - Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
Disclosed is a multilayered common mode filter exhibiting wide band characteristics as well as allowing uniform resistance and inductance in the coil patterns that form the channels. The disclosed multilayered common mode filter comprises first and second capacitor layers arranged on top and bottom, respectively, of an electrode stack to overlap with multiple coil patterns and form additional capacitance, the electrode stack comprising stacked upper and lower electrode layers each having a stacked body provided with multiple coil patterns.
A stator for an electric motor and an electric motor including the same are provided. A stator for an electric motor according to an exemplary embodiment of the present invention includes at least one coil, and a stator core including a yoke formed in a non-circular closed loop shape with at least one straight line portion, and a slot portion extending inward from the yoke by a predetermined length, wherein the slot portion includes a plurality of first slots on which the coil is wound and a plurality of second slots on which the coil is not wound, and at least one first slot of the plurality of first slots and at least one second slot of the plurality of second slots form the same phase as each other.
Disclosed is a stacked common mode filter in which an ESD absorption layer is arranged in a common mode filter applied to the mipi C-PHY standard, so that damage to an element caused by ESD is prevented while a change in filter performance is prevented. The disclosed stacked common mode filter comprises: a filter layer having a plurality of coils; a lower magnetic layer arranged below the filter layer; an upper magnetic layer arranged on the filter layer; and an ESD absorption layer arranged inside the lower magnetic layer and/or the upper magnetic layer.
The present invention relates to a drive motor capable of applying a bearing preload by positioning a magnet of a rotor in an asymmetric structure above a stator core, and a swivel actuator using same. The drive motor for a swivel actuator according to the present invention is characterized by comprising: a housing having, in the center, a hollow cylindrical portion protruding from the bottom; a rotor having a rotor support of which the lower end is cup-shaped and rotatably coupled to the outer periphery of the hollow cylindrical portion; a stator disposed on the outside of the rotor with an air gap therebetween and disposed on the bottom of the housing to generate a rotating magnetic field to rotate and drive the rotor; first and second bearings stacked in series and disposed between the cup-shaped lower end of the rotor support and the lower end of the hollow cylindrical portion to rotatably support the rotor; and a bearing support which is press-fitted to the outer periphery of the hollow cylindrical part and presses the second bearing.
The present invention relates to a pinion gear unit and a swivel actuator using same, wherein the pinion gear unit is capable of maximizing the torsional force of a pinion gear and a worm wheel connected to a ring gear. The swivel actuator according to the invention comprises: a lower housing having a hollow cylindrical portion protruding upward from the center thereof, the hollow cylindrical portion serving as a support shaft for a rotor; an upper housing assembled to the top of the lower housing and having a hollow cylindrical portion protruding upward from the center thereof; a driving motor having a rotor worm gear formed on the outer circumference of a cylindrical extension portion extending upward from the rotor in the lower housing; first and second gear trains each coupled to the outer circumference of the rotor worm gear inside the upper housing, the first and second gear trains having first and second worm wheels, formed in the middle of the first and second power transmission shafts and coupled to the rotor worm gear, and first and fourth worm gears, formed on both sides thereof; first to fourth pinion gear units having first to fourth pinion gears and third to sixth worm wheels meshing with the first and fourth worm gears, respectively; and a rotation table having a ring gear, with which the first to fourth pinion gears mesh, and making a rotation.
A multilayer common mode filter of the present disclosure has a filter stack configured by stacking, underneath a coil stack comprising a plurality of coils configuring mutually different channels, a stack provided with a capacitor pattern, a floating pattern, an inductor pattern, and a ground pattern, wherein resonance frequency characteristics may be changed according to the inductor pattern.
A multilayer common mode filter of the present disclosure is a filter comprising a plurality of coils configuring mutually different channels, wherein a plurality of coil patterns, and a plurality of via conductors connecting the coil patterns are provided inside a coil stack, and the plurality of via conductors are arranged, on a floor plan of the coil stack, in positions where same do not overlap with each other.
The present invention relates to a slim disk drive device for a friction generator to rotate a disk used in the friction generator. A disk drive device for a friction generator of the present invention comprises: a motor housing including an annular trench-type groove on the lower side thereof; a motor cover coupled to a lower portion of the motor housing to configure the inside of the trench-type groove to a sealing state; a stator disposed in the sealed trench-type groove to generate a rotating magnetic field to rotate a rotor; and the rotor rotatably disposed to have an air gap inside the stator and having a sealing structure by a rotor support body except for the exposed surface facing the stator, wherein a ferrite magnet is disposed on the exposed surface of the rotor.
H02K 21/14 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
This disclosure presents a multiband patch antenna which resonates in a second frequency band as well as in a first frequency band, i.e., a GNSS frequency band, by adding an antenna pin to a patch antenna. The presented multiband patch antenna includes a base substrate, an upper patch disposed on an upper surface of the base substrate, a lower patch disposed on a lower surface of the base substrate, a feed pin which passes through the base substrate, the upper patch, and the lower patch, and an antenna pin which is spaced apart from the feed pin and passes through the base substrate and the lower patch.
The present invention relates to a driving motor using a BLDC motor, and a seat actuator using same, the driving motor employing a BLDC motor as a driving device such that torque control, speed control and the like can be precisely performed and noise and vibration can be reduced. The driving motor of the present invention comprises: a motor housing having a first chamber and a second chamber inside a container; a rotary shaft which is rotatably disposed at the center of the first chamber, and which has a first worm gear integrally formed in an extension part extending to the outside of the first chamber; a rotor having a back yoke and a ring-shaped magnet disposed on the outer circumference of the rotary shaft; a stator disposed on the outside of the rotor with an air gap therebetween, and disposed on the outer periphery of the first chamber in order to rotate the rotor; and a printed circuit board (PCB) which is disposed to cover the tops of the first chamber and the second chamber, and on which an electronic component having a motor driving circuit for applying a driving signal to the U, V, and W three-phase coils of the stator is mounted.
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
B60N 2/06 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
B60N 2/16 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
13.
AXIAL GAP-TYPE ELECTRIC MOTOR FOR WATER PUMP (EWP)
The present invention relates to an axial gap-type electric motor for a water pump (EWP), the motor employing a rare-earth-free magnet in a rotor. The axial gap-type electric motor for the EWP, of the present invention, comprises: a rotor rotatably supported by a fluid flow passage between a pump cover and a body case; a stator disposed in a lower space formed by the body case and an upper cover, so as to generate a rotational magnetic field, in order to rotatably drive the rotor; and a waterproof partition disposed at the upper portion of the body case in order to separate the rotor from the stator, wherein a stator core of the stator is embedded in the waterproof partition such that the front end portion thereof is exposed to the fluid flow passage, and a waterproof coating film that is thinner than the waterproof partition is formed on the front end portion of the stator core exposed to the fluid flow passage.
F04D 13/08 - Units comprising pumps and their driving means the pump being electrically driven for submerged use
F04D 29/22 - Rotors specially for centrifugal pumps
F04D 29/42 - Casings; Connections for working fluid for radial or helico-centrifugal pumps
H02K 5/128 - Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
The present invention relates to an axial gap type electric motor for a water pump (EWP), employing a non-rare earth magnet in a rotor. The axial gap type electric motor for a water pump (EWP) of the present invention comprises: a rotor rotatably supported in a fluid flow passage between a pump cover and a body case; a stator disposed in a lower space formed by the body case and an upper cover to generate a rotating magnetic field to rotate the rotor; and a waterproof partition disposed on the upper portion of the body case to separate the rotor and the stator, wherein the stator core of the stator is embedded in the waterproof partition so that the front end thereof is exposed to the fluid flow passage, and a waterproof coating film made of a thinner film than the waterproof partition is formed on the front end of the stator core exposed to the fluid flow passage.
H02K 5/128 - Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
The present invention relates to a stator for an axial gap type electric motor which can adopt a non-rare earth magnet in a rotor. A stator for an axial gap type electric motor of the present invention comprises: a stator core including a plurality of teeth, each made of soft magnetic powder (Soft Magnetic Composites (SMC)), and a back yoke interconnected with the plurality of teeth to form a magnetic circuit and formed by stacking a plurality of electrical steel plates; and a coil wound around the outer circumferential surface of each of the plurality of teeth, wherein front end portions of the plurality of teeth are arranged on an upper portion of a body case having a sealed lower space and embedded in a waterproof partition wall to separate the front end portions from the rotor disposed in a fluid flow passage, and a waterproof coating film is formed on the front end portions to block exposure to the fluid flow passage.
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 1/02 - DYNAMO-ELECTRIC MACHINES - Details of the magnetic circuit characterised by the magnetic material
H02K 5/128 - Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
Disclosed is a patch antenna in which coupling gaps are formed between a lower patch and feed pins so as to maximize the performance of the antenna. The disclosed patch antenna comprises: a base layer; an upper patch disposed on the upper surface of the base layer; a lower patch disposed on the lower surface of the base layer; and feed pins passing through the base layer, upper patch, and lower patch, wherein the feed pins are spaced from the upper patch and thereby form coupling gaps.
Provided is a stacked ceramic capacitor package, for an electronic device, preventing noise, vibration and cracks due to piezoelectric properties. The ceramic capacitor package for an electronic device comprises: stacked ceramic capacitors; a first terminal structure connected to a first side surface of the stacked ceramic capacitors; and a second terminal structure connected to a second side surface of the stacked ceramic capacitors and disposed so as to face the first terminal structure with the stacked ceramic capacitors therebetween. The first terminal structure has a first groove defined in an area coming into contact with the first side surface of the stacked ceramic capacitors. The horizontal length of the first groove is 30% to 50% of the horizontal length of the stacked ceramic capacitors.
H01G 4/232 - Terminals electrically connecting two or more layers of a stacked or rolled capacitor
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
The present disclosure relates to a loop-shaped antenna pattern mounted on a mobile terminal, etc. and used for wireless power transmission/reception or communication, and a method for manufacturing same, wherein through holes are formed in a metal sheet through a double etching process, magnetic filler is applied to the through holes to allow the line spacing (or line width) of the antenna pattern to be precisely formed, and the magnetic filler is evenly applied between the patterns, and thus shielding performance can be improved compared to a conventional antenna pattern in which a shielding sheet is disposed on the rear surface thereof.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
The present invention relates to a swivel actuator capable of increasing fracture strength by increasing brake torque while minimizing backlash. The swivel actuator according to the present invention comprises: a driving motor having a rotor worm gear integrally formed on the outer periphery of a cylindrical rotor support; first and second gear trains, each being arranged at 180 degree intervals at the outer periphery of the rotor worm gear and being coupled thereto, having, in the middle of first and second power transmission shafts, first and second worm wheels gear-coupled to the rotor worm gear, and having first to fourth worm gears formed at both sides of each of the first and second power transmission shafts; first to fourth pinion gear units, each having, at the lower ends thereof, third to sixth worm wheels gear-coupled to the first to fourth worm gears, and having first to fourth pinion gears integrally formed at the upper ends thereof; and a rotary table gear-coupled to a ring gear having the first to fourth pinion gears integrally formed on the inner side of the side surface part thereof, so as to rotate.
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
F16H 1/46 - Systems consisting of a plurality of gear trains, each with orbital gears
F16H 57/12 - Arrangements for adjusting or for taking-up backlash not provided for elsewhere
F16H 57/039 - Gearboxes for accommodating worm gears
20.
ANTENNA PATTERN MANUFACTURING METHOD AND ANTENNA PATTERN MANUFACTURED THEREBY
The present disclosure relates to an antenna pattern in a loop shape, which is mounted in a mobile terminal, etc. and used for wireless power transmission/reception or communication, and to a manufacturing method therefor, which enables the precise formation of the line spacing (or line width) of an antenna pattern by preparing a laminated substrate having metal layers formed on both surfaces of a base substrate and forming half grooves in the first and second surfaces of the laminated substrate, respectively, through double half-etching, wherein the half grooves at least partially overlap to construct a throughhole forming a line spacing (or line width) of an antenna pattern.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H05K 3/00 - Apparatus or processes for manufacturing printed circuits
H05K 3/06 - Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
The present disclosure presents an antenna pattern manufacturing method which, by forming a through hole in a metal sheet via a punching process and an etching process, enables the precise formation of the line spacing of an antenna pattern. The presented antenna pattern manufacturing method comprises forming a first half groove in one surface of a metal sheet via a punching process and a second half groove in the other surface of the metal sheet via an etching process, wherein the first half groove and the second half groove at least partially overlap to form a through hole penetrating through the metal sheet.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
22.
PORTABLE TERMINAL SUPPORTING SHORT-RANGE COMMUNICATION FROM TOP AND BACK
The present disclosure presents a portable terminal which has antennas connected to first and second transmission ends of an NFC chipset, respectively, to enable short-range communication from the top and the back of the portable terminal. The presented portable terminal comprises: the NFC chipset having the first transmission end and the second transmission end; a first antenna connected to the first transmission end and having a region disposed parallel to the top of the portable terminal; and a second antenna connected to the second transmission end and having a loop disposed parallel to the back of the portable terminal.
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
H04M 1/02 - Constructional features of telephone sets
The present disclosure proposes a vehicle booster antenna sheet that is manufactured in the form of a sheet attached to a holder of a vehicle and enables a recognition distance of short-range communication to be extended through a coupling effect with an NFC antenna embedded in the holder. The proposed vehicle booster antenna sheet comprises a loop pattern, wherein the loop pattern at least partially overlaps a main short-range communication antenna of the holder when a vehicle booster antenna is attached to the holder.
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
H01Q 1/32 - Adaptation for use in or on road or rail vehicles
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
The present disclosure presents a booster antenna for a portable terminal, which is manufactured as a sheet or a case attachable to the rear of the portable terminal and extends the recognition distance of short-range communication by being coupled to an NFC antenna embedded in the portable terminal. The presented booster antenna for a portable terminal comprises a loop pattern. When the booster antenna for a portable terminal is disposed on the rear of the portable terminal, the loop pattern partially overlaps a main NFC radiation pattern of the portable terminal to increase the NFC recognition distance of the portable terminal.
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
The present invention relates to a hollow swivel actuator comprising: a lower housing in which a driving motor is disposed; and an upper housing in which three gear trains and three pinion gear units for deceleration are arranged at an interval of 120 degrees, respectively, wherein a rotor worm gear for transferring an output of the driving motor is coupled through gear engagement to a ring gear integrally formed on a rotational table, so as to transfer decelerated rotational power therebetween. A hollow swivel actuator according to the present invention can obtain a great deceleration ratio by: primary deceleration between a rotor worm gear of a driving motor and a first to a third worm wheels of a first to a third gear trains; secondary deceleration between a first to a third worm gears and a fourth to a sixth worm wheels of a first to a third pinion gear units; and tertiary deceleration between a ring gear and a first to a third pinion gears, and thus can achieve a large torque increase.
F16H 1/16 - Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
F16H 1/46 - Systems consisting of a plurality of gear trains, each with orbital gears
F16H 57/12 - Arrangements for adjusting or for taking-up backlash not provided for elsewhere
F16H 57/039 - Gearboxes for accommodating worm gears
26.
DRIVING MOTOR EQUIPPED WITH BLDC MOTOR, AND ACTUATOR USING SAME
Provided is an actuator including: a housing having first and second accommodation spaces; a driving motor having a BLDC type motor installed in the first accommodation space of the housing and generating a rotational output from a rotor; a printed circuit board (PCB) mounted on an upper side of the driving motor and having a motor driving circuit mounted for generating a motor driving signal according to reception of an external control signal; a gear train installed on an upper portion of the PCB in a longitudinal direction to reduce the rotational output of the driving motor to increase torque; and an output shaft installed in the second accommodating space of the housing and outputting a torque increased rotational output transmitted through the gear train to the outside of the housing.
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
A cooling fan includes: a fan housing having an air outlet for discharging air and an air inlet for introducing air; a rotation shaft having a lower portion rotatably supported by the fan housing; a rotor fixed to an upper portion of the rotation shaft; a stator arranged inside the rotor with a predetermined gap with respect to the rotor; an impeller connected to an outer periphery of the rotor and rotated together with the rotor; a printed circuit board (PCB) arranged below the stator to connect power to the stator and having mounted thereon various circuit components of the motor driving circuit; and a PCB housing box connected to the rear surface of the fan housing through a plurality of bridges and accommodating the PCB in a center thereof.
F04D 19/00 - Axial-flow pumps specially adapted for elastic fluids
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
28.
DRIVE MOTOR PROVIDED WITH BLDC MOTOR AND SWIVEL ACTUATOR USING SAME
Provided is a drive motor having a slim BLDC motor vertically mounted in a housing and a swivel actuator using same. A swivel actuator includes: a cylindrical housing where a hollow cylindrical portion protrudes from a bottom of a center thereof and first and second step portions protrude from an inner side wall thereof; a drive motor arranged on the bottom surface of the housing and providing rotational power to a rotor support extending upward; a cylindrical first worm gear integrally formed on the outer circumference of the rotor support; and first and second three-stage gear mechanisms coupled to opposite outer circumferences of the first worm gear, and rotating a rotating table with increased torque by reducing a rotation speed of the first worm gear.
The present invention provides an antenna pattern manufacturing method in which: a half groove is formed in each of a first surface and a second surface of a metal sheet through a primary etching; and the half groove formed on the first surface and the second surface of the metal sheet forms a through-hole through the metal sheet so as to form a line spacing (or line width) of an antenna pattern to be less than the thickness of the antenna pattern, thereby increasing the degree of freedom in a design of antenna patterns and enabling performance optimization design.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 7/06 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
H05K 3/40 - Forming printed elements for providing electric connections to or between printed circuits
Proposed is an antenna pattern in which two metal patterns are disposed with a through hole interposed therebetween and a plurality of grooves are formed at each end of the metal patterns. The proposed antenna pattern is a loop-shaped antenna pattern, wherein the cut surface of the antenna pattern comprises: a first metal pattern; a second metal pattern spaced apart from the first metal pattern; and a through hole interposed between the first metal pattern and the second metal pattern to form a separation space between the first metal pattern and the second metal pattern, and a plurality of grooves are formed at a first end of the first metal pattern adjacent to the through hole.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 7/06 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
H05K 3/40 - Forming printed elements for providing electric connections to or between printed circuits
31.
MULTIBAND CHIP ANTENNA AND MANUFACTURING METHOD THEREFOR
The present disclosure is a technical subject matter related to a multiband chip antenna resonating in a plurality of frequency bands, and a manufacturing method therefor. The antenna resonating from multiband signals through an inner radiation pattern formed inside a stack and an outer radiation pattern formed over the top surface and the side surface of the stack is implemented, wherein the radiation pattern is formed on the side surface of the stack through castellation so that patterns are formed with a precise size at an exact location.
The present invention relates to an internal hollow swivel actuator including a cycloid reducer which can not only secure a large reduction ratio but also guarantee durability and quietness. A swivel actuator according to the present invention comprises: a housing having an open upper portion and including a cylindrical portion having a through hole formed in the center thereof; a drive motor disposed in the housing and having a worm gear integrally formed on an outer circumference of an extension portion extending from a rotary shaft; a worm wheel in which a gear coupled to the worm gear is formed on a cylindrical circumference thereof to generate primary reduced rotational power; and a cycloid reducer installed on an upper portion of the housing to receive the primary reduced rotational power of the worm wheel coupled to an input shaft, secondarily decelerate, and output the reduced output to a rotation table, wherein the cycloid reducer has a two-stage structure eccentric portion on the input shaft, and a two-stage external gear is coupled to an inner circumference of an internal gear.
Proposed is an RFID antenna module in which feed pins of a patch antenna are connected to a first coupler and a second coupler so that the patch antenna operates as a left hand circular polarization antenna and a right hand circular polarization antenna. The proposed RFID antenna module comprises first to fourth feed pins penetrating through a laminate in which a dielectric, an upper patch, and a lower patch are laminated, and the first to fourth feed pins are spaced apart from each other.
Korea Institute of Ceramic Engineering and Technology (Republic of Korea)
Inventor
Kim, Hyung Suk
Hong, Sung Jin
Jo, Hyun Jin
Choi, Jae Woo
Shin, Hyo Soon
Yeo, Dong Hun
Choi, Jeoung Sik
Abstract
A high-voltage antiferroelectric and a method for manufacturing the same are provided. The antiferroelectric has a composition of PbxLa1-x([Zr1-YSnY]ZTi1-Z). The antiferroelectric is sintered at a low temperature, and has a high density and a high breakdown voltage.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
Disclosed is a lightweight patch antenna having grooves formed in a dielectric, an upper patch, and a lower patch so as to maintain antenna performance while being lightweight. The disclosed lightweight patch antenna comprises: a dielectric; an upper patch layered on the dielectric; a lower patch layered under the dielectric; and a plurality of lightweight grooves formed by removing a portion of a stack from the outside of the stack in which the dielectric, the upper patch, and the lower patch are stacked.
Provided is a driving motor having a slim BLDC motor vertically mounted in a housing and a swivel actuator using same. The swivel actuator has an annular stator arranged on the bottom of the housing and a rotor arranged therein and having a worm gear integrally formed on the upper side thereof. A worm wheel of a power transmission shaft forming a gear train is gear-engaged with the worm gear of the rotor, a worm gear formed on the other end of the power transmission shaft is coupled to a worm wheel located at the lower end of a pinion gear unit, and a pinion gear located at the upper end of the pinion gear unit is coupled to a ring gear formed inside a lateral surface portion of a rotating table, so as to rotate the rotating table to which a passive object is fixed.
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
H02K 21/16 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having annular armature cores with salient poles
37.
ELECTRICAL MEMBER CONTACT DEVICE AND ANTENNA MODULE COMPRISING SAME
The present disclosure relates to a technology for improving the stability and reliability of an antenna operation with respect to external shock and vibration. Disclosed is an electrical member contact device and an antenna module comprising same, the electrical member contact device comprising a gasket and a frame, which have conductivity, wherein the frame fastened to a fastening hole is coupled to the gasket while curved to face the fastening hole.
The present invention relates to a ceramic capacitor and a manufacturing method therefor, the ceramic capacitor comprising: a ceramic body which is formed in a hexahedral shape, includes a plurality of dielectric layers and at least one pair of internal electrodes disposed to face each other with the dielectric layers therebetween, and includes two end surfaces through which the internal electrodes are exposed, a lower surface which is a mounting surface mounted on a substrate, an upper surface facing the lower surface, and a front surface and a rear surface connecting the upper surface and the lower surface and facing each other; and external electrodes respectively disposed on the end surfaces of the ceramic body so as to be electrically connected to the internal electrodes, wherein the external electrodes include: a metal layer formed on the entire end surfaces of the ceramic body so as to be connected to the internal electrodes; and a conductive resin layer formed on both edges of the end surfaces of the ceramic body.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
The present invention relates to an RFID tag module to be embedded in rubber, comprising an RFID tag and an epoxy layer coated thereon. The present invention has advantages in that the RFID tag, when inserted into a rubber material such as a tire, attaches to rubber very well, can be integrated into the rubber material of the tire, and does not damage the rubber material thereof.
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
C08L 71/00 - Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
A multilayer ceramic capacitor according to the present invention may comprise: a ceramic body comprising a plurality of dielectric layers stacked together; a lower electrode formed at the lower surface of the ceramic body; and an electrode pillar formed from the lower surface of the ceramic body toward the inner center of the ceramic body, wherein the electrode pillar comprises a first electrode pillar formed at one side of the lower surface of the ceramic body and a second electrode pillar formed at the other side of the lower surface of the ceramic body, and the first electrode pillar and the second electrode pillar form an electrode.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
Provided is a ceramic capacitor capable of reducing the influence of deviation even when internal electrodes are misaligned. The disclosed ceramic capacitor comprises: a ceramic body; a first internal electrode disposed inside the ceramic body; and a second internal electrode disposed inside the ceramic body and surrounding the circumference of the first internal electrode while being spaced apart from the first internal electrode on the same horizontal plane as the first internal electrode.
Disclosed is a multilayered ceramic capacitor. The present invention comprises: a ceramic body in which a plurality of dielectric layers are stacked; a recessed portion which is recessedly formed at a corner where a side surface of the ceramic body and a bottom surface of the ceramic body contact each other; and a lower electrode formed on the bottom surface of the ceramic body.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
The present invention relates to a RFID tag module embeddable in rubber, comprising: an RFID tag comprising an IC chip and an antenna pattern; and at least one recessed slot formed near the IC chip so as to reduce stress acting on the IC chip. The present invention has the recessed slot formed near the IC chip, and thus, even if torsional stress acts on the RFID tag as a result of high-speed driving, etc., the stress is prevented from being concentrated on the IC chip, and thus the present invention has the advantage of enabling the prevention of damage to the IC chip.
G06K 19/077 - Constructional details, e.g. mounting of circuits in the carrier
G06K 19/07 - Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards with integrated circuit chips
C08L 71/00 - Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
C08L 67/02 - Polyesters derived from dicarboxylic acids and dihydroxy compounds
Disclosed is a broadband capacitor in which floating electrodes are disposed above, below and at both sides of a stack in which a plurality of inner electrodes are stacked. The disclosed broadband capacitor comprises: a dielectric on which the stack having the plurality of inner electrodes stacked therein is disposed; a first outer electrode disposed at a first side surface of the dielectric; a second outer electrode disposed at a second side surface of the dielectric; a first floating electrode disposed above the stack; a second floating electrode disposed below the stack; a third floating electrode disposed at one side of the stack; and a fourth floating electrode disposed at the other side of the stack, opposite to the one side of the stack.
The present invention relates to a ceramic capacitor and a manufacturing method thereof. The ceramic capacitor comprises: a ceramic body including a plurality of dielectric layers and an internal electrode in which first external electrodes are disposed on both sides of each of the top surface and the bottom surface of the ceramic body; and second external electrodes which are disposed on at least a portion of each of first and second cross sections facing each other in a longitudinal direction of the ceramic body and extend to the top and bottom surfaces to be in contact with the first external electrodes, respectively, wherein each of the second external electrodes has a short distance from each of the first and second cross sections to one end thereof than each of the first external electrodes.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
The present invention relates to a ceramic capacitor and a manufacturing method thereof, and provides a ceramic capacitor and a manufacturing method thereof, the capacitor comprising: a plurality of dielectric layers; a ceramic body including inner electrodes, some of the inner electrodes being thick; and outer electrodes which are arranged on both cross sections facing each other in the lengthwise direction of the ceramic body, and which are connected to the inner electrodes. The present invention comprises reinforcing parts arranged in areas connected with the outer electrodes on electrode units of the inner electrodes so as to partially reinforce the thickness of the inner electrodes.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
The present invention relates to a ceramic capacitor and a method for manufacturing same, and comprises: a ceramic body including a plurality of dielectric layers and having front and rear surfaces facing each other, upper and lower surfaces facing each other, and both end surfaces facing each other; a first edge cutting surface formed such that one end surface among both end surfaces of the ceramic body and the front and rear surfaces of the ceramic body meet each other; a second edge cutting surface formed such that the other end surface opposite to the one end surface among both end surfaces of the ceramic body and the front and rear surfaces of the ceramic body meet each other; at least one first internal electrode disposed inside the ceramic body and exposed to be connected to each of the one end surface of the ceramic body and the first edge cutting surface; and at least one second internal electrode disposed inside the ceramic body, exposed to be connected to each of the other end surface of the ceramic body and the second edge cutting surface, and including a portion overlapping the first internal electrode.
H01G 4/012 - Form of non-self-supporting electrodes
H02G 13/00 - Installations of lightning conductors; Fastening thereof to supporting structure
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
The present invention relates to an electric seat driving device that prevents slippage between a rotor shaft and a nut shaft and enhances coupling strength therebetween by using a D-cut structure between the rotor shaft and the nut shaft, which are axially coupled to a rod, in coupling same. The electric seat driving device according to the present invention, for linearly reciprocating an electric seat along a rod, comprises: a housing having a case, of which the two ends are open and which has a circular hollow portion therein, and first and second covers detachably coupled to the two ends of the case; first and second bearings provided inside the first and second covers; a nut shaft, which has one end of the outer circumference thereof rotatably supported by the first bearing and has an inner circumferential portion thereof axially coupled to the rod; a hollow rotor shaft, which has one end thereof press-fitted to the outer circumference of the nut shaft and the other end thereof rotatably supported by the second bearing; a rotor, which has a plurality of N-pole and S-pole magnets alternately mounted on the outer circumferential portion of the rotor shaft; and a stator, which is embedded inside the case and has a coil wound around a stator core, wherein the nut shaft and the rotor shaft form a rotational shaft of the rotor, and the press-fitted portion is coupled by a D-cut structure to prevent slippage.
B60N 2/06 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
B60N 2/02 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
The present invention relates to a ceramic capacitor comprising: a plurality of dielectric layers; a ceramic body having front and rear surfaces facing each other, upper and lower surfaces facing each other, and both end surfaces facing each other; at least a pair of inner electrodes arranged to be spaced a predetermined interval apart inside the ceramic body so that each end thereof is exposed to either end surface of the ceramic body; and outer electrodes electrically connected to the inner electrodes, wherein the outer electrode includes electrode layers formed at both end surfaces of the ceramic body, and a conductive resin layer for covering a part of the electrode layer and encompassing the lower edge of the ceramic body. In the present invention, an external electrode having improved shock absorption efficiency is applied so that the occurrence of cracks can be prevented.
The present invention relates to a ceramic capacitor, comprising: a ceramic body having front and rear surfaces facing each other, upper and lower surfaces facing each other, and both end surfaces facing each other; a plurality of first dummy electrodes disposed inside the ceramic body, exposed to one end surface of both end surfaces of the ceramic body, and exposed to the front and rear surfaces of the ceramic body so as to contact one end surface of the ceramic body; and a plurality of second dummy electrodes disposed inside the ceramic body, exposed to the other end surface opposite to the one end surface of both end surfaces of the ceramic body, and exposed to the front and rear surfaces of the ceramic body so as to contact the other end surface of the ceramic body. The present invention has advantages in that tensile strength is improved by applying a dummy electrode to a lower portion of a ceramic capacitor, and the shape of the dummy electrode is improved such that an area to be soldered when soldering the ceramic capacitor to the substrate is widened, thereby enabling stable bonding with a substrate.
The present invention relates to a coupler, which includes: a coupler body having an external ground formed on an outer surface thereof; a coupler line positioned inside the coupler body and electrically connected to a port electrode for signal connection with the outside; an internal ground arranged between the external ground and the coupler line and electrically connected to the external ground; and a port line having one end electrically connected to the port electrode and the other end electrically connected to the coupler line.
H01P 5/18 - Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
H01P 5/04 - Coupling devices of the waveguide type with variable factor of coupling
A ceramic capacitor of the present invention comprises: a ceramic body (100) in which a plurality of first dielectric layers (110) are stacked; and first and second bottom electrodes (211, 212) arranged on both sides of the bottom surface of the ceramic body (100), wherein the plurality of first dielectric layers (110) are formed of only dielectric. The present invention has an advantage of providing a multilayer ceramic capacitor having a low capacity structure to have a high reaction speed while operating at a high frequency.
A ceramic capacitor of the present invention comprises: a ceramic body (100) having a plurality of first dielectric layers (110) stacked therein; and first and second bottom electrodes (211, 212) arranged on both sides of the lower surface of the ceramic body (100), wherein the plurality of first dielectric layers (110) are formed from only dielectrics. The present invention can provide a stacked ceramic capacitor having a low-capacity structure so that reaction rate is fast while allowing operating in a high frequency.
H01G 13/00 - Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups
H01G 4/012 - Form of non-self-supporting electrodes
Disclosed is a laminated common mode filter which implements a wide band characteristic and in which the resistance and inductance of coil patterns configuring each channel are formed uniformly. The disclosed laminated common mode filter comprises: an upper electrode layer configured by a lamination comprising multiple coil patterns; a lower electrode layer configured by a lamination comprising multiple coil patterns and disposed under the upper electrode layer; and a capacitance layer configured by a lamination comprising a capacitance pattern and a ground pattern, disposed under the lower electrode layer, and overlapping the multiple coil patterns to form an additional capacitance.
The present invention relates to a fan capable of preventing oil scattering without using an oil-scattering prevention washer and simultaneously preventing the escape of a rotary shaft due to a lift, and a manufacturing method therefor. The fan according to the present invention comprises: a cylindrical fan housing; a base having a bearing housing integrally formed therewith, the bearing housing protruding from the rear surface of the fan housing to the center portion thereof; a sleeve bearing inserted in the bearing housing; a rotary shaft, of which the lower portion is rotatably supported by the sleeve bearing; a rotor fixed to the upper portion of the rotary shaft; a stator which is coupled to the outer circumference of the bearing housing; and an impeller which is integrally formed with the outer circumference of the rotor and rotated along with the rotor, wherein the stator comprises: a stator core having a plurality of teeth, on which a coil is wound, formed by extending from a back yoke; a bobbin which surrounds the stator core and has an oil-scattering prevention portion extending to the inside of the bearing housing; and the coil wound on a coil winding portion of the bobbin, and the inner circumference of the oil-scattering prevention portion is extended to be adjacent to an escape prevention groove of the rotary shaft.
Proposed is a laminated common mode filter in which a ground pattern is interposed between coil patterns to form additional capacitance. The proposed laminated common mode filter comprises: an upper electrode layer composed of a laminate having a first coil pattern, a second coil pattern, and a third coil pattern; a ground layer that is arranged on the lower portion of the upper electrode layer and has a ground pattern; and a lower electrode layer that is arranged on the lower portion of the ground layer and is composed of a laminate having a forth coil pattern, a fifth coil pattern, and a sixth coil pattern, wherein the ground pattern is arranged to overlap the coil patterns of the upper electrode layer and the coil patterns of the lower electrode layer to form capacitance.
H01F 27/34 - Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
An impeller is disposed at a passage part through which air of a fan housing passes and comprises a plurality of blades radially formed on a hub and the outer surface of the hub, wherein each of the blades comprises: a hub connection part connected to the hub; a first side surface part and a second side surface part formed at opposite side surfaces of the hub connection part; and an outer surface part connected to the end parts of a second connection part and the first side surface part and disposed to have a gap part which corresponds to a spacing from the inner surface of the passage part of the fan housing, and at least one of outer surface parts of the plurality of blades has a first area part, the gap part of which has a small area, and a second area part, the gap part of which has an area relatively larger than that of the first area part, thereby reducing noise of a specific band and at a time of high-output.
Provided are: a feed pin in which a step is formed on a head to prevent cracks from forming in a soldering layer; and a patch antenna comprising the feed pin. The provided feed pin includes: a feed head made of a conductive material and in the shape of a plate having a first area; a stepped plate made of a conductive material and in the shape of a plate having a second area, the stepped plate being connected to the lower surface of the feed head; and a feed bar made of a conductive material and in the shape a polyhedron, the feed bar being connected to the lower surface of the stepped plate.
Presented is an antenna module for wireless power transmission and reception in which an inner loop pattern is disposed in the inner peripheral area of an outer loop coil so as to provide a constant charging recognition rate regardless of location. The presented antenna module for wireless power transmission and reception comprises: a base substrate; a first antenna which is disposed on the upper surface of the base substrate and includes a first radiation pattern forming a first loop; and a second antenna which is stacked on the upper surface of the base substrate and includes a coil wound along the outer periphery of the first loop to form a second loop.
H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H02J 50/10 - Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
Proposed is a multi-band antenna module in which antennas having different polarization characteristics are coupled so as to prevent deterioration in isolation caused by interference between the antennas. The proposed multi-band antenna module comprises a circuit board. On the top surface of the circuit board, a first upper clearance area, a second upper clearance area, an upper radiator, and an upper ground are defined so as to operate as a PIFA antenna resonating in a first frequency band. On the first upper clearance area and the second upper clearance area, a first conductor area and a second conductor area operating as a monopole antenna resonating in a second frequency band are defined.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H01Q 1/46 - Electric supply lines or communication lines
Disclosed is a broadband capacitor including floating electrodes arranged above and below a laminate in which electrode units are laminated to allow easy change of the characteristic (that is, a capacitance value) of a capacitor. The disclosed broadband capacitor comprises: a dielectric; a first external electrode; a second external electrode; a laminate, which is disposed in the dielectric and in which a plurality of electrode units are laminated; an upper floating electrode disposed in the dielectric, disposed above the laminate, and overlapping the first external electrode and the second external electrode; and a lower floating electrode disposed in the dielectric, disposed below the laminate, and overlapping the first external electrode and the second external electrode.
Provided is an axial gap type motor employing a non-rare earth magnet, and a water pump using same. The axial gap type motor for a water pump (EWP) comprises: a rotor rotatably supported on a fluid flow passage between a pump cover and a body case; a stator arranged in a lower space formed by the body case and an upper cover, so as to generate a rotating magnetic field, thereby rotating the rotor; and a partition arranged on the body case in order to separate the rotor from the stator. The rotor can use a ferrite magnet, which is a non-rare earth magnet.
H02K 21/24 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
H02K 1/02 - DYNAMO-ELECTRIC MACHINES - Details of the magnetic circuit characterised by the magnetic material
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
Disclosed is a shield can which operates as an antenna for location determination while blocking electromagnetic waves by defining a shielding area and radiation areas which resonate in one or more frequency bands by forming a shielding pattern and a radiation pattern, and an electronic module comprising same. Here, the shield can comprises: a carrier, a shielding pattern plated on a portion of the surface of the carrier to form the shielding area; and a radiation pattern plated on a different portion of the surface of the carrier to form a plurality of radiation areas.
Proposed is a shield can in which slots are formed to define radiation regions resonating in at least one frequency band so as to enable the shield can to operate as an antenna while shielding electromagnetic waves. The proposed shield can comprises: a plurality of slits formed in the shield can to separate the shield can into a plurality of internal regions and an external region spaced apart from the plurality of internal regions; a shielding region that is the external region separated by the plurality of slits; and radiation regions that are the plurality of internal regions separated by the plurality of slits.
Disclosed is a combo antenna module and a method for manufacturing the same, in which a combo antenna of a low frequency band and an antenna of a high frequency band are integrated to minimize the mounting space and thickness while maintaining the same level of antenna performance. The disclosed combo antenna module comprises: a first antenna in which a first antenna pattern having a first operation frequency is disposed, and an attachment area not overlapping with the first antenna pattern is defined; and a second antenna which is disposed in the attachment area and has a second antenna pattern having a second operation frequency higher than the first operation frequency and disposed on the upper surface thereof, wherein the dielectric loss value of the second antenna is lower than the dielectric loss value of the first antenna.
H01Q 5/35 - Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
Presented is a multi-band antenna module in which antennas having different polarization characteristics are coupled to prevent deterioration in isolation caused by interference between the antennas. The presented multi-band antenna module comprises: a patch antenna for transmitting/receiving a signal of a first frequency band; and a circuit board which has the patch antenna mounted on the top surface thereof, and which has a conductive pattern for transmitting/receiving a signal of a second frequency band while feeding the patch antenna.
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01Q 21/06 - Arrays of individually energised antenna units similarly polarised and spaced apart
An electric motor for reciprocating an object along a rod having a predetermined length is provided, comprising: a housing; a rotor unit that is mounted to the inside of the housing via a bearing to be rotatable and comprises a rotor shaft, which is axially-coupled to the rod to linearly reciprocate along the rod during rotation, and a plurality of magnets mounted along the circumference direction of the rotor shaft; and a stator unit comprising at least one stator core and a coil, the at least one stator core comprising a yoke portion of a closed loop shape that is built in the housing so as to surround the circumference of the rotor unit, and a plurality of slot portions extending from the yoke portion toward the rotor, and the coil being wound around at least one slot portion among the plurality of slot portions.
A stator having a bus bar structure that enhances assembly productivity and durability by adopting the bus bar structure comprises: a division type stator core in which a plurality of division cores are assembled in an annular shape; upper and lower insulators surrounding the outer circumference of teeth of the division cores; a stator coil composed of a plurality of core groups continuously wound onto three teeth for each phase; a plurality of bus bar brackets coupled to the insulators so as to bind two division cores; U-phase, W-phase, and V-phase bus bars on which a connection terminal to which a start terminal of each core group is connected is protruded; a common electrode bus bar on which a connection terminal to which an end terminal of each core group is connected is protruded; and a stator support that insulates between coils so as to integrate the plurality of division cores.
H02K 3/28 - Layout of windings or of connections between windings
H02K 1/04 - DYNAMO-ELECTRIC MACHINES - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
H02K 5/04 - Casings or enclosures characterised by the shape, form or construction thereof
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
69.
COMBO ANTENNA MODULE AND PORTABLE DEVICE HAVING SAME
Suggested is a combo antenna module configured to implement the same antenna performance as that of a combo antenna module having a general size, even in a state in which the size thereof is reduced by adjusting, within a set range, a distance at which magnetic sheets disposed on the top and the bottom of an antenna sheet are spaced apart. The suggested combo antenna module comprises: an antenna sheet; a top magnetic sheet disposed on the upper surface of the antenna sheet; and a bottom magnetic sheet disposed on the lower surface of the antenna sheet, wherein the top magnetic sheet includes a projecting region which overlaps with the bottom magnetic sheet while having the antenna sheet therebetween, and the top magnetic sheet and the bottom magnetic sheet are spaced apart at a distance within a set range at a side portion of the projecting region.
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 7/06 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
70.
ELECTRIC SEAT CONTROL APPARATUS FOR VEHICLE AND CONTROL METHOD THEREFOR
Provided is an electric seat control apparatus for a vehicle including: a first rail and a second rail mounted at a constant interval on the floor surface of a vehicle body in the forward and rearward directions of a seat; a first movement unit provided with a first motor and mounted between the first rail and the lower surface of the seat to move linearly along the first rail; a second movement unit provided with a second motor and mounted between the second rail and the lower surface of the seat to move linearly along the second rail; and a control unit that simultaneously receives the RPM and a rotational position signal of the first motor and the RPM and a rotational position signal of the second motor to synchronize the RPMs and rotational positions of the first motor and the second motor to match each other.
B60N 2/02 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
B60N 2/06 - Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
A complex device is provided. A complex device according to an embodiment of the present invention comprises: a suppressor including a pair of first dielectric sheet layers having a first dielectric constant and a pair of internal electrodes spaced apart from each other on one surface of one of the pair of first dielectric sheet layers; a capacitor including a plurality of second dielectric sheet layers having a second dielectric constant and a plurality of capacitor electrodes provided on each of the plurality of second dielectric sheet layers; and a pair of external terminals provided on both sides of the suppressor and the capacitor to be connected to the plurality of capacitor electrodes and the pair of internal electrodes. Here, provided is the complex device in which the first dielectric constant is greater than the second dielectric constant.
H05K 9/00 - Screening of apparatus or components against electric or magnetic fields
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H01C 7/10 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
A hub-type electric driving device comprises: a housing having a wheel formed in the shape of a cup, and a cover of which the outer peripheral part is coupled to the opening of the wheel; a motor shaft having both end portions fixedly provided on a body outside of the housing; first and second bearings provided respectively in through-holes formed in the centers of the wheel and the cover, in order to rotatably support the housing around the motor shaft; and a BLDC motor which is embedded inside the housing and rotates the housing around the motor shaft, wherein the BLDC motor comprises: a rotor in which a back yoke and a magnet are stacked on a cylindrical inner wall of the wheel; and a stator of which the outer peripheral part faces the magnet of the rotor while having an air gap therewith and of which the central part is coupled to the outer circumference of the motor shaft so as to be fixed thereto, and which is for applying a rotating magnetic field to the rotor, wherein the stator has an integrated core frame in which a plurality of teeth radially extend on the outer circumference of an annular yoke, and an inner race coupled to the motor shaft is connected to the inside of the annular yoke through a plurality of bridges.
A hub-type electronic driving device comprises: a housing comprising a wheel and a cover, the wheel having a rim formed on the outer periphery thereof such that a tire is coupled thereto, the wheel having the shape of a cup, one side of which is open, and the cover having an outer peripheral portion coupled to the opening of the wheel; a motor shaft having both ends fixedly installed on a body in which the hub-type electronic driving device is installed; first and second bearings installed in through-holes formed at centers of the wheel and the cover, respectively, so as to rotatably support the housing around the motor shaft; a BLDC motor contained in the housing so as to rotate the housing around the motor shaft; a cable containing multiple wires for applying a motor driving signal from a motor driving circuit installed outside the housing to the BLDC motor; and a cable guide assembly installed between the motor shaft and the first bearing supporting the wheel so as to maintain a sealing state when the cable is introduced into the housing or withdrawn therefrom.
Disclosed is a broadband capacitor in which an electrode unit comprises a main electrode and a plurality of side electrodes so as to facilitate changing of capacitance value. The disclosed broadband capacitor is formed by alternately stacking a first electrode set, which comprises a first main electrode and a plurality of side electrodes spaced apart from the first main electrode, and a second electrode set, which comprises a second main electrode and a plurality of side electrodes spaced apart from the second main electrode.
Proposed is a smart antenna module for a vehicle in which a plurality of cellular antennas are mounted in a non-ground area and spaced apart from a ground pattern to minimize mutual interference. In the proposed smart antenna module for a vehicle, a first antenna is disposed in a ground area of a base substrate, the cellular antennas are disposed in a non-ground area of the base substrate, and the cellular antennas are electrically connected to the ground area of the lower surface of the base substrate.
C04B 35/468 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on titanium oxides or titanates based on titanates based on alkaline earth metal titanates based on barium titanates
C04B 35/48 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxides based on zirconium or hafnium oxides or zirconates or hafnates
C04B 35/622 - Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
Suggested is an antenna module which maximizes a characteristic of isolation between two radiation patterns located adjacent to each other by forming a ground wall, by means of through-holes, at the radiation patterns. The suggested antenna module comprises: a first radiation pattern disposed on the upper surface of a base substrate; a second radiation pattern disposed on the upper surface of the base substrate while being spaced away from the first radiation pattern; a plurality of first through-holes arranged in parallel with one side of the first radiation pattern facing the second radiation pattern; and a plurality of second through-holes arranged in parallel with one side of the second radiation pattern facing the first radiation pattern.
A cooling fan includes: a fan housing mounted on a mounting bracket; a rotary shaft rotatably supported by the fan housing; a rotor fixed to the rotary shaft; a stator fixed to the fan housing and disposed at a predetermined gap from the rotor; an impeller connected to the rotor so as to rotate therewith; and a separation prevention member formed in the mounting bracket so as to prevent the impeller from being separated from the fan housing. the separation prevention bar comprises: a pair of vertical bars formed at opposite edges of the air passage portion in a vertical direction to the mounting bracket and a horizontal bar connecting upper portions of the vertical bars, thereby providing a gap between the impeller and the horizontal bar so that the separation prevention bar does not interfere with rotation of the impeller.
Provided is a method for manufacturing a silicon nitride substrate. A method for manufacturing a silicon nitride substrate according to an embodiment of the present invention comprises the steps of: preparing a ceramic composition containing a metal silicon powder and a crystalline phase control powder containing a rare earth element-containing compound and a magnesium-containing compound; manufacturing a sheet-shaped molded body of a slurry prepared by mixing a solvent and an organic binder with the ceramic composition; and performing heat treatment including a nitrification section where heat treatment is performed at a first temperature in the range of 1300-1500℃ together with the application of nitrogen gas to the molded body at a predetermined pressure and a sintering section where heat treatment is performed at a second temperature in the range of 1700-1900℃. Therefore, the present invention, compared with the conventional art, can reduce the manufacturing time and manpower and thus is suitable for mass production. Additionally, the implemented silicon nitride substrate has excellent mechanical strength since the melting and elution of silicon can be minimized or prevented during nitrification. Furthermore, sintering is completed after entering the sintering section while the rapid transition to a beta phase is suppressed, and thus the transition to the beta phase, the acceleration of beta phase growth, and uniform growth can be attained, leading to more improved thermal conductivity. Furthermore, thermal conductivity and mechanical strength are uniform regardless of the site on the substrate, so that a higher-quality substrate can be attained.
C04B 35/584 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
The present invention relates to a stator having an excellent heat dissipation effect since an insulator (or bobbin) which insulates between a stator core and a coil is formed by using an insulating and heat-dissipating composite material having both heat dissipation performance and insulating performance, and a propeller driving apparatus and aircraft using the stator. The propeller driving apparatus comprises: a radial gap-type BLDC motor having an inner rotor-outer stator structure, in which a rotor is arranged inside a stator in a circumferential shape with an airgap interposed therebetween; and a propeller installation bracket for installing the propeller on the rotary shaft of the motor, wherein the stator comprises: a stator core having an annular back yoke having a certain width so as to form a magnetic circuit and a plurality of teeth extending from the back yoke in the direction toward the center; an insulator formed to surround the outer circumferential surface, on which a coil is to be wound, in each of the plurality of teeth; and a stator coil wound on the outer circumferential surface of the insulator in each of the plurality of teeth. The insulator is formed of the insulating and heat-dissipating composite material having both heat dissipating performance and insulating performance.
H02K 3/34 - Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
H02K 1/04 - DYNAMO-ELECTRIC MACHINES - Details of the magnetic circuit characterised by the material used for insulating the magnetic circuit or parts thereof
H02K 3/52 - Fastening salient pole windings or connections thereto
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 29/00 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
The present invention relates to a rotor, which is capable of effectively dissipating heat by means of a water cooling method using a water jacket having a refrigerant circulation circuit while realizing inner air cooling using an air flow passage formed inside a motor, and a propeller driving device and an aircraft using same. The propeller driving device comprises: a housing in which an upper cover and a lower cover each having a plurality of through holes in the upper and lower portions of a cylindrical case are coupled to each other; a stator which is disposed inside the case; a rotor which is disposed to be spaced apart from the stator; and a rotary shaft which is connected to the rotor through a plurality of bridges, and has both ends rotatably supported by an upper bearing and a lower bearing positioned at central portions of the upper cover and the lower cover, wherein the inner air cooling of the motor is attained through the plurality of through holes of the upper cover and the lower cover and the air flow passage passing through a plurality of spaces formed between the plurality of bridges.
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 29/00 - Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
H02K 7/00 - Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
B64D 27/24 - Aircraft characterised by the type or position of power plant using steam, electricity, or spring force
B64D 33/08 - Arrangement in aircraft of power plant parts or auxiliaries not otherwise provided for of power plant cooling systems
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
82.
METHOD FOR MANUFACTURING MULTILAYER CERAMIC ELECTRONIC COMPONENT, AND MULTILAYER CERAMIC ELECTRONIC COMPONENT IMPLEMENTED USING SAME
Provided is a method for manufacturing a multilayer ceramic electronic component. According to the method for manufacturing a multilayer ceramic electronic component according to one embodiment of the present invention, it is possible to more easily and reliably implement ultra-thinning and micro-patterning of an internal electrode required for large-capacity, it is possible to implement excellent thickness uniformity even when the provided internal electrode is being ultra-thinned, and it is possible to prevent shape deformation or delamination of a sintered body caused by a difference in shrinkage characteristics between the internal electrode and a ceramic green sheet after sintering.
A multilayer ceramic electronic component manufacturing method is provided. The multilayer ceramic electronic component manufacturing method according to one embodiment of the present invention: more easily and reliably enables an inner electrode to be implemented as an ultra-thin film and a micropattern, which is required for large-capacity; enables the provided inner electrode to have excellent thickness uniformity even when same is formed as an ultra-thin film; and can prevent the deformation or interfacial delamination of a sintered body due to the difference between the shrinkage properties of the internal electrode and a ceramic green sheet after sintering.
Disclosed is a shield can for operating as an antenna while blocking electromagnetic waves by defining a radiation area resonating in one or more frequency bands according to the formation of slots. The disclosed shield can arranged on a printed circuit board to cover electronic components mounted on the printed circuit board comprises: a first slit formed in the shield can to divide the shield can into a first inner area and a first outer area spaced from the first inner area; a shielding area, which is the first outer area divided by means of the first slit; and a first radiation area which is the first inner area divided by means of the first slit.
The present invention relates to a propeller driving device capable of simultaneously performing rotational driving of a load and power generation by using a double stator-single or double rotor type of motor, and a drone using same. The propeller driving apparatus according to the present invention comprises: a double stator-single or double rotor type of motor; and a motor seating part for seating the motor on an arm of the drone, wherein the motor is of a radial gap type, in which an inner rotor and an outer rotor are disposed circumferentially on the inner side and outer side of the double stator, respectively, with an air gap therebetween, and one of the inner stator of the double stator formed on the inner side thereof and the outer stator thereof formed on the outer side is set as a power generator, and the other one is set as a driving motor.
H02K 16/04 - Machines with one rotor and two stators
H02K 7/20 - Structural association with auxiliary dynamo-electric machines, e.g. with electric starter motors or exciters
H02K 5/16 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
H02K 1/2753 - Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
B64D 27/24 - Aircraft characterised by the type or position of power plant using steam, electricity, or spring force
B64C 39/02 - Aircraft not otherwise provided for characterised by special use
B64D 41/00 - Power installations for auxiliary purposes
86.
WINDING APPARATUS AND ANTENNA COIL MANUFACTURED THEREBY
Disclosed are: a winding apparatus having a cut surface formed on a side surface of a rotation jig so as to prevent metal wire from being unnecessarily rotated at the time of winding the metal wire; and an antenna coil having a loop shape including at least one straight line section. The disclosed antenna coil includes: a loop wound multiple times around a winding axis on a same plane; a first end part disposed in an inner circumferential area of the loop; and a second end part disposed in an outer circumferential area of the loop, wherein the loop includes one or more straight line sections.
The present invention suggests a multi-band patch antenna in which an antenna pin is inserted into a single-band patch antenna, so that the multi-band patch antenna requires a minimum mounting space and can resonate in both the existing frequency bands and the V2X frequency band. The suggested multi-band patch antenna comprises: a base substrate through which a first through-hole and a second through-hole are formed; an upper patch and a lower patch arranged on the upper and lower surfaces of the base substrate, respectively; an inner conductor disposed on the inner wall surface of the first through-hole to electrically connect the upper patch to the lower patch; an antenna pin extending through the first through-hole, and including an end part disposed above the base substrate; and a first feed pin extending through the second through-hole.
H01Q 5/40 - Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
88.
DRIVE MOTOR HAVING BLDC MOTOR, AND SWIVEL ACTUATOR USING SAME
A swivel actuator according to the present invention comprises: a cylindrical housing having a hollow cylindrical part protruding from the center thereof; a BLDC drive motor in which a rotor is installed so as to be rotatable around the hollow cylindrical part; a cylindrical first worm gear integrally formed on the outer periphery of the rotor; first and second gear trains each coupled to the first worm gear so as to reduce the rotational speed of the drive motor, thereby generating torque-increased rotational output; a rotary table rotatably coupled to the hollow cylindrical part and having a ring gear integrally formed inside a side portion thereof; and first and second pinion gear units each having a lower end coupled to the other side of the first and second gear trains and an upper end coupled to the ring gear so as to transmit torque-increased rotational output to the rotary table.
Provided is a multi-band patch antenna which has, on a base substrate, a feeding patch and one or more radiation patches, which are formed apart from an upper patch, so as to resonate with a second frequency band along with a first frequency band which is a GNSS frequency band. The provided multi-band patch antenna comprises: a base substrate having an upper surface, a lower surface, and a plurality of sides; an upper patch disposed on the upper surface of the base substrate; a lower patch disposed on the lower surface of the base substrate; a feeding patch disposed over the upper surface and a first side of the base substrate and disposed to be apart from the upper patch on the upper surface of the base substrate; and a first radiation patch disposed over the upper surface and a second side of the base substrate and disposed to be apart from the upper patch and the feeding patch on the upper surface of the base substrate.
H01Q 5/30 - Arrangements for providing operation on different wavebands
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
90.
METHOD FOR PREPARING SILICON NITRIDE POWDER FOR MANUFACTURING SUBSTRATE AND SILICON NITRIDE POWDER PREPARED THEREBY
Provided is a method for preparing silicon nitride powder for manufacturing a substrate. The method for preparing silicon nitride powder for manufacturing a substrate, according to an embodiment of the present invention, comprises the steps of: preparing mixed raw material powder comprising metallic silicon powder and crystalline phase control powder; preparing the mixed raw material powder into granules having a predetermined particle size; nitrifying the granules at a predetermined temperature ranging from 1,200-1,500 °C while nitrogen gas is applied to the granules at a predetermined pressure; and pulverizing the nitrified granules. According to the method, it is easy to realize powder having an α crystal phase at a desired level, and when this is realized as a substrate, a substrate having compact density can be manufactured.
C01B 21/068 - Binary compounds of nitrogen with metals, with silicon, or with boron with silicon
C04B 35/584 - Shaped ceramic products characterised by their composition; Ceramic compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxides based on borides, nitrides or silicides based on silicon nitride
Presented is a UWB antenna module configured to implement omni-directional characteristics with respect to bearings even when mounted on a metal ground plane. The presented UWB antenna module comprises: a base sheet; a radiation pattern formed on a front surface of the base sheet; and a ground pattern formed on the front surface of the base sheet and arranged to surround the radiation pattern.
Disclosed is a combo antenna module in which an accommodation groove is formed in a coil pattern and a connection pattern connected to a coil pattern disposed on another surface is disposed in the accommodation groove so as to minimize a mounting space and provide antenna performance greater than or equal to that of a conventional antenna module. The disclosed combo antenna module comprises a coil pattern for short-range communication and a coil pattern for wireless power transmission. The coil pattern for wireless power transmission has the accommodation groove formed by varying the line width of the coil pattern disposed on one surface, and the connection pattern for connecting the coil patterns disposed on the other surface is disposed in the accommodation groove so as to minimize a mounting space and provide antenna performance greater than or equal to that of a conventional antenna module.
H01Q 1/38 - Structural form of radiating elements, e.g. cone, spiral, umbrella formed by a conductive layer on an insulating support
H04B 5/00 - Near-field transmission systems, e.g. inductive loop type
H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
H01Q 7/06 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
Disclosed is a radar antenna including an antenna body including a first plate and a second plate; a slot radiation part and a slot reception part formed in the first plate; a transmission port and a reception port formed in the second plate; and a waveguide formed by assembling the first and second plates. The slot radiation part includes a first slot radiation part configured to radiate a radio wave in a first detection range, and a second slot radiation part configured to radiate radio waves in a second detection range having a larger width and distance than the first detection range.
The present invention proposes a multiband patch antenna which includes a patch antenna and an antenna pin added thereto so as to allow the antenna to resonate in both a first frequency band which is a GNSS frequency band and a second frequency band. The proposed multiband patch antenna comprises: a base substrate; an upper patch disposed on the upper surface of the base substrate; a lower patch disposed on the lower surface of the base substrate; a feed pin passing through the base substrate, the upper patch, and the lower patch; and an antenna pin spaced apart from the feed pin and passing through the base substrate and the lower patch.
A method for providing a location tracking service on the basis of context-aware information of a location tracker, according to the present invention, transmits a signal while changing a communication method by classify a situation as an emergency situation and a normal state which is a non-emergency situation according to the context-aware information of the location tracker, such that it is possible to use power consumption reduced by a low-power communication method in the normal state, and in case of the emergency situation, to safely handle the emergency situation through a sufficient power communication method.
H04W 4/029 - Location-based management or tracking services
H04W 4/021 - Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
H04W 4/90 - Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
96.
MULTILAYER CERAMIC CONDENSER AND POWER MODULE COMPRISING SAME
Proposed is a multilayer ceramic condenser which can easily be mounted on a power module and minimize the generation of parasitic components by forming a top electrode and a bottom electrode on a ceramic condenser. The proposed multilayer ceramic condenser comprises: a dielectric having a plurality of internal electrodes disposed therein; a first external electrode disposed on a first side surface of the dielectric; a second external electrode disposed on a second side surface of the dielectric; the top electrode which is disposed on the top surface of the dielectric and is disposed adjacent to the first side surface of the dielectric so as to be connected to the first external electrode; and the bottom electrode which is disposed on the bottom surface of the dielectric and is disposed adjacent to the second side surface of the dielectric so as to be connected to the second external electrode.
The present invention relates to a drive motor provided with a slim BLDC motor vertically mounted in a housing and a swivel actuator using same. A swivel actuator according to the present invention comprises: a cylindrical housing including a hollow cylindrical part protruding from the bottom of the center thereof; a drive motor which is disposed on the bottom surface of the housing and includes a first cylindrical worm gear integrally formed at the outer circumference of a cylindrical extension part of a rotor; a first and a second gear train in which a second and a third worm wheel gear-coupled to the outer circumference of the first worm gear are formed at one-side portions of a first and a second power transmission shaft, and a second and a third worm gear are formed at the other side portions thereof; a first and a second pinion gear unit in which a fourth and a fifth worm wheel gear-coupled to the second and the third worm gear are formed at the lower ends of a first and a second support shaft, respectively, and a first and a second pinion gear are formed at the upper ends of the first and the second support shaft, respectively; and a rotation table in which the first and the second pinion gear are gear-coupled to a ring gear formed in a side surface part thereof to rotate.
Provided is a stacked ceramic capacitor package, for an electronic device, preventing noise, vibration and cracks due to piezoelectric properties. The ceramic capacitor package for an electronic device comprises: stacked ceramic capacitors; a first terminal structure connected to a first side surface of the stacked ceramic capacitors; and a second terminal structure connected to a second side surface of the stacked ceramic capacitors and disposed so as to face the first terminal structure with the stacked ceramic capacitors therebetween. The first terminal structure has a first groove defined in an area coming into contact with the first side surface of the stacked ceramic capacitors. The horizontal length of the first groove is 30% to 50% of the horizontal length of the stacked ceramic capacitors.
H01G 2/14 - Protection against electric or thermal overload
H01G 4/40 - Structural combinations of fixed capacitors with other electric elements not covered by this subclass, the structure mainly consisting of a capacitor, e.g. RC combinations
H01C 7/10 - Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
Provided is a hub type driving device applicable to an electric bicycle of a throttle mode, a PAS mode, and a throttle and PAS combination mode, and an electric bicycle using same. The hub type driving device comprises: a housing having an accommodation space therein; a support shaft for penetrating to pass through the housing and of which both ends are fixed to a fork of the electric bicycle; first and second bearings for rotatably supporting the housing around the support shaft; an electric motor for generating a rotational force rotated around the support shaft; a derailleur for decelerating the rotational force of the electric motor; and a clutch for selectively transmitting an output of the derailleur to the housing. The derailleur is formed of a planetary gear device of a sun gear input, a carrier fixation, and a ring gear output mode.
B62M 6/65 - Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially
B62M 11/16 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
The present invention relates to a cooling fan having a waterproof structure of a printed circuit board (PCB) on which a motor driving circuit is mounted. The cooling fan according to the present invention comprises: a fan housing having an air outlet for discharging air, formed on the front surface thereof and an air inlet for introducing air, formed on the rear surface thereof; a rotation shaft having a lower portion rotatably supported by the fan housing; a rotor fixed to an upper portion of the rotation shaft; a stator arranged inside the rotor with a predetermined gap therebetween; an impeller connected to the outer periphery of the rotor and rotated together; the printed circuit board (PCB) arranged below the stator to connect power to the stator and having mounted thereon various circuit components of the motor driving circuit for controlling the cooling fan; and a PCB housing box which is connected to the rear surface of the fan housing through a plurality of bridges and accommodates the PCB in the center thereof, wherein a pin terminal which electrically connects a coil of the stator to the PCB is soldered at the upper end thereof to be connected and fixed, and the lower end of the pin terminal is connected to the PCB located inside the PCB housing box, through a waterproof rubber pad and the PCB housing box.
F04D 29/66 - Combating cavitation, whirls, noise, vibration, or the like; Balancing
H02K 11/30 - Structural association with control circuits or drive circuits
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
patents
