An optical member 100 includes a light-transmissive member 10 and a hydrophilic layer 20. The light-transmissive member 10 transmits visible light. The hydrophilic layer 20 covers the light-transmissive member 10. The hydrophilic layer 20 contains secondary particles obtained by aggregating a plurality of primary particles of titanium dioxide. The average particle diameter of the primary particles of titanium dioxide is 5-20 nm. The average particle diameter of the secondary particles of titanium dioxide is 15-100 nm. The thickness of a coating layer is preferably 5-20 nm.
A reflection adjustment film 30 is used for an optical member 100 provided with a hydrophilic layer 20 containing a plurality of photocatalytic particles. The reflection adjustment film 30 is disposed under the hydrophilic layer 20. The thickness of the reflection adjustment film 30 is 5 times or more the thickness of the hydrophilic layer 20. The thickness of the reflection adjustment film 30 is preferably 20-2000 nm. The reflection adjustment film 30 is preferably provided with a low refractive index layer and a high refractive index layer. The photocatalytic particles are preferably titanium oxide particles.
A hydrophilic film 70 contains a plurality of titanium particles and a plurality of silica particles. The hydrophilic film 70 has a surface roughness of 2.0-7.5 nm. It is preferable that a first layer 20 and a second layer 60 disposed on the first layer 20 are provided, and that the first layer 20 contains a plurality of titanium particles, and the second layer 60 contains a plurality of silica particles. The average particle diameter of the titanium particles is preferably 15-100 nm, and the average particle diameter of the silica particles is preferably 5-20 nm.
A rotor of one embodiment of the present invention is able to rotate about a central axis, and comprises: a rotor core; and an end plate that has a first plate surface facing the rotor core in the axial direction, and a second plate surface facing the inverse side from the first plate surface. The first plate surface comprises a contact surface that makes contact with the rotor core in the axial direction in a state where at least part of the end plate is elastically deformed in the axial direction. The contact surface comprises a first surface. In a state where the end plate is not elastically deformed, the first surface is, toward the radially outward side, located increasingly close to a first side of the axial direction where the rotor core is arranged with respect to the end plate, In the state where the end plate is not elastically deformed, a radially outward end of the first surface is the portion of the contact surface that is located closest to the first side. The end plate comprises a first recess provided to an outer surface of the end plate. At least part of the first recess overlaps the first surface in the axial direction.
The present invention relates to a rotating electric machine comprising: a rotor that can rotate about a central axis; a stator that is positioned on the radially outer side of the rotor; a cylindrical holding member that surrounds the stator from the radially outer side and holds the stator; and a housing that accommodates the rotor, the stator, and the holding member therein. The holding member has a first rib provided on a radially outer surface of the holding member and in contact with the housing. The housing has a second rib provided on a radially outer surface of the housing. At least a part of the first rib overlaps the second rib in the radial direction.
This signal conversion method converts each of a plurality of analog signals into a digital signal, and includes: a first step in which a sampling process for sampling the value of an analog signal at least once is sequentially performed a plurality of times; and a second step that is performed following the first step, and in which the sampling process is sequentially performed a plurality of times. The plurality of instances of the sampling process performed in the first step include at least one instance of the sampling process for each of the plurality of analog signals. In the second step, the plurality of instances of the sampling process performed in the first step are performed in the opposite order from that of the first step.
This optical element has an optical axis Lx. The optical element comprises a plastic lens, a hard coat layer, and an anti-reflection film. The hard coat layer is positioned between the plastic lens and the anti-reflection film. The anti-reflection film is disposed on at least one surface side of the plastic lens. The thickness of the hard coat layer on the optical axis is 2-20 μm. The minimum thickness of the hard coat layer is 2 μm or more, and the maximum thickness of the hard coat layer is 20 μm or less.
This lens unit comprises a plurality of lenses and a cylindrical housing member that houses the plurality of lenses. The plurality of lenses are arranged in order from an opening in the housing member, and the outermost lens positioned on the opening side of the housing member among the plurality of lenses includes a plastic lens, an antireflection film arranged on at least one surface side of the plastic lens, and a hard coat layer positioned between the plastic lens and the antireflection film. The lens unit further comprises a light shielding member that shields the outer edge of the outermost lens from light.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
This rotary electrical machine comprises: a rotor that can rotate about the central axis; a stator positioned at the radially outer side of the rotor; a cylindrical member that is positioned at the radially outer side of the stator and that accommodates therein the stator; and a housing that has an accommodation part for accommodating therein the rotor, the stator, and the cylindrical member. The cylindrical member has a stator fixing part to which the stator is fixed, a first support part that is positioned closer to one side in the axial direction as compared to the stator fixing part and that is supported on the accommodation part, and a first connection part that is positioned between the stator fixing part and the first support part in the axial direction and that connects the stator fixing part and the first support part. At least a portion of the stator fixing part and at least a portion of the first connection part are arranged so as to be separated radially inward from the inner surface of the accommodation part.
A dynamo-electric machine comprising: a rotor that is capable of rotating about a central axis; a stator that is positioned on the radially outer side of the rotor; a cylindrical member that is positioned on the radially outer side of the stator, the cylindrical member accommodating the stator in the interior thereof; and a housing that has an accommodation part for accommodating the rotor, the stator, and the cylindrical member in the interior thereof. The stator has a stator core fixed to the cylindrical member, and a coil end that protrudes from the stator core in the axial direction. A gap is provided between the radially outer surface of the cylindrical member and the radially inner surface of the accommodation part. The accommodation part has: a first flow passage part that overlaps the stator core in a direction intersecting the axial direction, the first flow passage part being connected to the gap; and a second flow passage part that overlaps the coil end in a direction intersecting the axial direction, the second flow passage having a fluid for cooling the coil end flowing therein.
This rotor comprises a shaft, a rotor core having a plurality of core piece parts aligned in the axial direction, and a plate disposed between the core piece parts adjacent to each other in the axial direction. The shaft has a first shaft hole part and a second shaft hole part connected to the first shaft hole part. The rotor core has a pair of first magnet holes, a second magnet hole positioned radially outside the pair of first magnet holes, and a core channel part positioned in a portion surrounded by the pair of first magnet holes and the second magnet hole when viewed in the axial direction. The plate has a plate channel part that connects the second shaft hole part and the core channel part. The plate channel part has a supply channel part that overlaps the core channel part when viewed in the axial direction, and a connection channel part that connects the second shaft hole part and the supply channel part. The connection channel part overlaps at least a portion of the pair of first magnet holes when viewed in the axial direction.
A lens unit according to the present invention is provided with: a plurality of lenses; and a cylindrical housing member for housing the plurality of lenses. The plurality of lenses are arranged in order from an opening of the housing member. An outermost lens positioned on the opening side of the housing member among the plurality of lenses includes: a plastic lens having a surface provided with an inflection section; an antireflection film disposed on the surface side of the plastic lens; and a hard coat layer positioned between the plastic lens and the antireflection film. The lens unit is further provided with a light shielding member that shields the inflection section of the plastic lens from light.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 1/04 - Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
G02B 1/14 - Protective coatings, e.g. hard coatings
G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
13.
STATOR, MOTOR, AND METHOD FOR MANUFACTURING STATOR
This stator comprises an annular stator core surrounding the central axis extending in the axial direction, a plurality of coil parts, a circuit board, and an electrically insulating coating member. The stator core has slots. The plurality of slots penetrate in the axial direction and are arranged in the circumferential direction. The plurality of coil parts are disposed in the slots, respectively. The circuit board is disposed further in one axial direction than the stator core and is electrically connected to lead-out wires led out from the coil parts. The coating member coats at least the coil parts. The circuit board has a first through-hole extending in the axial direction. At least a part of the first through-hole overlaps with the stator core when viewed from the axial direction.
This rotor manufacturing method comprises: a core plate formation step for punching a steel plate to form a plurality of core plates having a plurality of insertion holes that penetrates the steel plate in the thickness direction, each insertion hole serving to configure a part of a corresponding magnet insertion hole of a plurality of magnet insertion holes, and a plurality of protrusions protruding toward the inside of the plurality of insertion holes; a protrusion removal step for removing at least one of the plurality of protrusions in at least some of the plurality of core plates formed in the core plate formation step; a lamination step for laminating the plurality of core plates to configure the magnet insertion holes of the insertion holes in which the protrusions protrude toward the inside and the insertion holes from which the protrusions have been removed; and a magnet insertion step for inserting the magnet into each of the plurality of magnet insertion holes and holding the magnets in contact with the protrusions.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
A first core plate of this rotor comprises: a first insertion hole; a protrusion that protrudes toward the inside of the first insertion hole and is in contact with a magnet; and a deformation-allowing part that is positioned in a direction opposite to a direction in which the first insertion hole is positioned with respect to the protrusion in an arrangement direction of the first insertion hole and the protrusion, and allows deformation of the protrusion in said opposite direction. A second core plate has a second insertion hole for exposing at least a part of the protrusion when viewed from the axial direction in a state where the second core plate is stacked on the first core plate. A plurality of the second core plates include a central core plate that is stacked at the center in the axial direction of the rotor core, and a first surface layer core plate and a second surface layer core plate that constitute end surfaces in the axial direction of the rotor core. At least one first core plate is stacked between the central core plate and the first surface layer core plate, and at least one first core plate is stacked between the central core plate and the second surface layer core plate.
A sintered oil-impregnated bearing comprising a bushing portion and groove groups. The bushing portion is made of a porous sintered body that can be impregnated with lubricating oil, and the bushing portion extends along a central axis. The groove groups have a plurality of first grooves. The plurality of first grooves extend at least in the axial direction of the central axis and are aligned in the circumferential direction. A plurality of groove groups are arranged on the radially outer surface of the bushing portion and are aligned in the circumferential direction. Circumferential gaps between first grooves that are adjacent in the circumferential direction within each of the groove groups are smaller than circumferential gaps between groove groups that are adjacent in the circumferential direction. Additionally, a motor comprising the above-described sintered oil-impregnated bearing, a shaft, a rotor, and a bearing holder. The shaft extends along the central axis, and the rotor is capable of rotating together with the shaft about the central axis. The bearing holder rotatably supports the shaft via the sintered oil-impregnated bearing. The bearing holder has a holder cylinder and a plurality of ribs. The holder cylinder extends in the axial direction and encircles and holds the sintered oil-impregnated bearing. The plurality of ribs protrude radially inward from the radially inner surface of the holder cylinder and are aligned in the circumferential direction.
F16C 17/02 - Sliding-contact bearings for exclusively rotary movement for radial load only
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
A drive device according to one embodiment of the present invention is provided with: a motor; a shaft that is connected to a rotor of the motor and extends in an axial direction with a central axial line at the center; a bearing that supports one axial-direction-side end of the shaft; a partition member; a housing; and a channel disposed in the housing. The shaft is cylindrical in shape, including a hollow section that opens on the one axial-direction side. The housing includes an accommodation section that is convex in shape opening on the other axial-direction side, and that internally accommodates the bearing. An inner side surface of the accommodation section includes a first opening section and a second opening section. The channel includes: a first channel section that opens in the inner side surface of the accommodation section at the first opening section; and a second channel section that opens in the inner side surface of the accommodation section at the second opening section. The partition member partitions the interior of the accommodation section into a first space and a second space. The first space is located between the first opening section and the hollow section. The second space is located between the second opening section and the bearing.
Provided is a flow path adjustment mechanism for a fluid delivery device, the flow path adjustment mechanism being able to adjust a circulation area of a fluid that flows by driving of a drive body. The flow path adjustment mechanism is provided with a blocking unit. The blocking unit can adjust blocking and opening of at least a portion of a circulation face of a flow path seen from a circulation direction of the fluid, on the basis of a result of detection of at least one of a drive state of the drive body and a state of the fluid in the flow path through which the fluid circulates. The fluid delivery device is provided with the flow path adjustment mechanism and a circulation device. The circulation device causes the fluid to flow by driving of the drive body.
A drive device according to one embodiment of the present invention comprises: a motor having a motor shaft that rotates about a motor axis; a transmission mechanism positioned at one side of the motor in the axial direction and having a plurality of gears that transmit the power of the motor; a plurality of bearings supporting the transmission mechanism; a housing provided with a motor chamber that accommodates the motor and a gear chamber that accommodates the transmission mechanism; a flow channel through which a fluid flows, at least a portion of the flow channel being provided in the housing; and a pump that suctions in and pumps the fluid from an inlet port that is disposed in the flow channel and opens into the gear chamber. The gear chamber is provided with a partition wall that partitions the gear chamber into a first area and a second area. Of the plurality of gears, a ring gear with the largest diameter is disposed in the first area. The inlet port is disposed in the second area. The housing has a cylindrical part that holds the bearings. The flow channel has a first flow channel section that supplies the fluid to an inner circumferential surface of the cylindrical part, and a second flow channel section that extends from the inner circumferential surface of the cylindrical part to an opening end positioned in the first area.
A drive device according to one embodiment comprises: a motor having a motor shaft that rotates about a motor axis; a transmission mechanism that is located on one axial side of the motor and that has a plurality of gears for transmitting the motive power of the motor; a housing provided with a motor compartment in which the motor is accommodated and a gear compartment in which the transmission mechanism is accommodated; and a fluid retained in the housing. The housing has a barrier partitioning the motor compartment and the gear compartment, and a dividing wall part extending in the vertical direction. The dividing wall part partitions the gear compartment into a first storage part and a second storage part when viewed from the axial direction. The gears of the transmission mechanism are disposed in the first storage part. The second storage part opens upwards. A channel linking the first storage part and the second storage part are provided to the housing. A barrier opening linking the motor compartment and the first storage part is disposed in the barrier.
An aspect of the present invention is a control device that controls a motor and that is provided with a control unit that controls the motor. The control unit performs regenerative current control for respectively controlling a d-axis current command value and a q-axis current command value on the basis of a regenerative torque command value. When performing the regenerative current control, the control unit determines the ratio of the d-axis current command value to the q-axis current command value on the basis of the charging rate of a battery capable of supplying power to the motor and temperature information related to the motor.
An angle detecting device according to one aspect of the present invention comprises: a first magnet that rotates in synchronization with a rotor and has at least two pole pairs; a second magnet that rotates in synchronization with the rotor and has one pole pair; three first magnetic sensors that face the first magnet and that are disposed at a prescribed interval in the circumferential direction of the first magnet; one second magnetic sensor that faces the second magnet; and a signal processing device that calculates an absolute angle of the rotor on the basis of an output signal of the second magnetic sensor and a synthetic signal which is the sum of output signals of the three first magnetic sensors. The output signals of the three first magnetic sensors mutually have a phase difference of 120 degrees in electrical angle. The phase difference between the synthetic signal and the output signal of the second magnetic sensor is 90 degrees in mechanical angle.
G01D 5/16 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
23.
TARGET SPEED SELECTION DEVICE, MOTOR CONTROL DEVICE, TARGET SPEED SELECTION METHOD, AND TARGET SPEED SELECTION PROGRAM
[Problem] To select a target speed that makes motor loss energy smaller than in the related art. [Solution] A target speed selection device comprising: a detector that detects a speed of a motor or a speed of a moving object moved by the motor; a calculation unit that calculates motor loss energy on the basis of the detected speed; and a selection unit that selects a target speed that makes the motor loss energy smaller than that at a speed that minimizes pseudo motor loss energy, which is determined by assuming that a load torque is constant even when the speed changes.
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
B60L 15/20 - Methods, circuits or devices for controlling the propulsion of electrically-propelled vehicles, e.g. their traction-motor speed, to achieve a desired performance; Adaptation of control equipment on electrically-propelled vehicles for remote actuation from a stationary place, from alternative parts of the vehicle or from alternative vehicles of the same vehicle train for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
One embodiment of a drive device according to the present invention is equipped with: a motor which has a rotor capable of rotating around a first axis; a transmission mechanism which transmits the rotations of the rotor and is positioned on one side of the motor in the axial direction; a first control unit positioned on the other side of the motor in the axial direction; a second control unit positioned to the outside of the motor in the radial direction; a bus bar which connects the first and second control units to one another; and a connection channel section. The first control unit has a plurality of electronic components which constitute an inverter, a first housing which houses the plurality of electronic components, and a first channel section provided to the first housing. The second control unit has a power conversion unit, a current distribution unit, a second housing for housing the power conversion unit and the current distribution unit, and a second channel section provided to the second housing. The connection channel section connects the first channel section and the second channel section to one another. One or more elements among the bus bar and the connection channel section extend toward the first housing in the radial direction from a surface of the second housing which faces inward in the radial direction.
One aspect of a drive device according to the present invention comprises: a motor that has a rotor which can rotate about a first axis and a stator which surrounds the rotor from the radially outer side; a housing that surrounds the motor; a first control unit that controls the motor; and a case that accommodates the first control unit. The stator has an annular stator core that is centered on the first axis and a coil that is installed on the stator core. The case is fastened to the housing from a first direction which is orthogonal to the axial direction, at a plurality of fastening parts. The plurality of fastening parts are disposed at positions which are offset from the stator core in the axial direction.
A signal generation device according to one aspect of the present invention comprises: a rotatably arranged magnet that has one or more pole pairs; M (M is a multiple of 3) magnetic sensors that output first M-phase signals according to the rotation angle of the magnet; and a signal processing unit that processes the first M-phase signals, wherein the signal processing unit executes first processing of calculating an M-phase complex vector on the basis of the first M-phase signals, and second processing of calculating second M-phase signals by multiplying the real part or imaginary part of the first M-phase complex vector by N (N is an integer of 2 or more).
G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
An angle detection device according to one aspect of the present invention comprises: a first magnet that rotates in synchronization with a rotating body and has one pole pair; M (M is a multiple of 3) first magnetic sensors that output first M-phase signals in which a waveform of one period in electrical angle appears every time the first magnet rotates once; a signal acquisition unit that acquires second M-phase signals for which the frequency is N (N is an integer of 2 or more) times that of the first M-phase signals; and an angle calculation unit that calculates the absolute angle of the rotating body on the basis of the first M-phase signals and the second M-phase signals.
G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
G01D 5/245 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using a variable number of pulses in a train
This drive device comprises: a motor body; a gear mechanism; a housing having a motor housing that accommodates thereinside the motor body, a gear housing that is located at one side in the axial direction of the motor housing and that accommodates thereinside the gear mechanism, and a storage part that stores thereinside a fluid; a pump for delivering the fluid inside the storage part to the inside of the motor housing; a flow channel that connects at least the pump and the inside of the motor housing and through which the fluid flows; and a cooler that is disposed in a portion, in the flow channel, where the fluid is delivered from the pump to the inside of the motor housing. A motor that has the motor body and the motor housing is formed. A portion of the motor overlaps in the axial direction with the gear housing. The motor has a projection part projecting radially outward from the gear housing as viewed in the axial direction. At least a portion of the cooler overlaps with the gear housing in a prescribed direction orthogonal to the axial direction, and overlaps with the projection part in the axial direction.
This drive device comprises: a motor having a rotor that is capable of rotating about a central axis, and a stator that faces the rotor across a gap; a gear mechanism that is connected to the rotor; a housing having a motor housing that accommodates the motor therein, a gear housing that accommodates the gear mechanism therein, and a storage part that has a fluid stored therein; and a pump that is attached to the housing and sends the fluid in the storage part into the interior of the motor housing. The housing has an attachment part having an attachment hole. The attachment hole has an opening that opens upward in the outer surface of the housing. At least part of the pump is inserted into the attachment hole through the opening.
A drive device according to one aspect of the present invention comprises: a motor that has a rotor that is able to rotate about a center axis and a stator located on the radial outward side of the rotor; a gear mechanism connected to the rotor; a housing that includes a motor housing that contains therein the motor and a gear housing that contains therein the gear mechanism; and a fluid supply unit that supplies a fluid to the motor. The stator includes a stator core that is fixed inside the motor housing. A first protruding section that protrudes radially inward is provided to the inner surface of the motor housing. The surface on the radial inside of the first protruding section is an opposing surface that opposes the surface on the radial outside of the stator core in the radial direction. The opposing surface extends along the radial outside surface of the stator core as seen in the axial direction. The housing includes a first flow path through which the fluid flows. The first flow path includes a first opening section that is open in a first surface side that is one side in the circumferential direction of the first protruding part, and a second opening section that is open to the inside of the gear housing.
A motor unit according to one embodiment of the present invention is equipped with a motor, an inverter, a bus bar, a motor housing and an inverter housing. The inverter is electrically connected to the motor. The bus bar connects the motor and the inverter to one another. The motor housing has a motor chamber. The inverter housing has an inverter chamber. One or more sections of the inverter chamber overlap the motor chamber in the radial direction and the axial direction. A wall section for demarcating the motor chamber and the inverter chamber is provided to the section of the motor and inverter housings where the motor chamber and the inverter chamber overlap one another in the axial direction. The motor chamber and the inverter chamber are connected via a connecting hole through which the bus bar passes. The motor housing has a first storage section for storing the bus bar, an opening section which connects the first storage section and the motor housing exterior to one another, and a pressure adjustment mechanism which is attached to the opening.
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
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
A drive device according to one embodiment of the present invention has a motor, a motor housing, an inverter, an inverter housing, and a gear. The inverter housing radially overlaps with the motor housing. The inverter housing is provided with a first flow channel through which a refrigerant flows. The motor housing is provided with a second flow channel through which the refrigerant flows. A third flow channel that connects the first flow channel and the second flow channel is provided. The second flow channel has a second flow-in part and a second flow-out part. The refrigerant flows into the second flow channel through the second flow-in part. The refrigerant flows out of the second flow channel through the second flow-out part. The second flow-in part is provided in a region at the side opposite to a differential shaft across a motor shaft in the motor housing, at a position closer to the motor shaft as compared to an end portion at the side opposite to the differential shaft across the motor shaft in the motor housing.
A motor unit according to one aspect of the present disclosure comprises: a motor housing; an inverter housing; and a pump. The motor housing accommodates a motor. The inverter housing accommodates an inverter which is electrically connected to the motor. At least a part of the pump is disposed in the inverter housing.
[Problem] To provide a technology that enables suppression of vibration of an apparatus mounted on a housing. [Solution] A control device and an apparatus 202 are mounted on a frame 2013. The control device comprises: a storage unit 233 for storing information indicating a duty ratio corresponding to the rotational speed of a motor 24 and indicating a range of the rotational speed of the motor 24 by which the apparatus 202 resonates; and a processing unit 232. If the range includes a target rotational speed of the motor 24, then the processing unit 232 outputs, on the basis of the information, a first signal that has a duty ratio corresponding to a rotational speed greater than an upper limit value of the range, or a second signal that has a duty ratio corresponding to a rotational speed smaller than a lower limit value of the range. The motor 24 rotates on the basis of the first signal or second signal outputted from the processing unit 232.
H02P 29/00 - Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
H02P 5/46 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
This rotor comprises a shaft and a rotor core. The rotor core comprises: a through hole through which the shaft passes in an axial direction; a protrusion provided on a radially inner edge portion of the through hole; and a plurality of recesses provided in the radially inner edge portion of the through hole and spaced apart at intervals in a circumferential direction. When a plurality of virtual lines that, when viewed in the axial direction, extend radially outward from a center axis and are arranged at equal intervals in the circumferential direction are stipulated with the number of virtual lines being equivalent to the total number of protrusions and recesses, one of the plurality of virtual lines, when viewed in the axial direction, overlaps the center of the protrusion in the circumferential direction. The plurality of recesses includes a first recess and a second recess that, when viewed in the axial direction, overlaps a virtual line. The first recess satisfies at least one requirement from among: when viewed in the axial direction, an arrangement relationship in the circumferential direction with respect to a virtual line closest to the first recess in the circumferential direction differs from an arrangement relationship in the circumferential direction of the second recess with respect to the virtual line overlapping the second recess; the first recess has a shape that differs from that of the second recess when viewed in the axial direction; and the first recess has a circumferential dimension that differs from that of the second recess when viewed in the axial direction.
[Problem] To provide a technology which makes it possible to stably operate a system comprising a plurality of motors. [Solution] A system 100 comprises: a plurality of motors 24; impellers 25 attached to output shafts 242 of the motors 24; and communication units 233 and drive units 234 respectively corresponding to the plurality of motors 24. One communication unit 233 transmits first information indicating the imbalance amount of a first impeller 25 to another communication unit 233. The first impeller 25 is an impeller 25 that corresponds to the one communication unit 233. The one communication unit 233 receives second information indicating the imbalance amount of a second impeller 25 from the other communication unit 233. The second impeller 25 is an impeller 25 that corresponds to the other communication unit 233. Each of the drive units 234 rotates a corresponding one of the motors 24 that corresponds to the drive unit 234, at a rotation speed based on the second information received by the one communication unit 233 that corresponds to the drive unit 234.
H02P 5/46 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
This rotor is capable of rotating about a central axis that extends vertically, and comprises a cylindrical rotor core, first magnets and second magnets. The rotor core has a plurality of first accommodating holes and second accommodating holes that extend in an axial direction and that are arranged in a circumferential direction. The first magnets are accommodated in the first accommodating holes with first gaps provided on both sides in a radial direction. The second magnets are accommodated in the second accommodating holes with second gaps provided on both sides in the circumferential direction. When viewed from the axial direction, two of the first accommodating holes form a pair, the first accommodating holes extending radially in a V-shape while moving apart with increasing distance toward a radially outer side. One second accommodating hole is disposed between each pair of the first accommodating holes. When viewed in the axial direction, an angle obtained by adding all central angles formed by joining both ends, in the circumferential direction, of each second accommodating hole and the central axis is from 55% to 70%, inclusive, of the entire circumference of the rotor core.
[Problem] To provide a system that can be stably operated. [Solution] A system 100 comprises: a plurality of motors 24; and a detection unit 235, a communication unit 233, and a drive unit 234 that correspond to each of the plurality of motors 24. Each detection unit 235 detects the state of a relevant motor 24. The relevant motor 24 is a motor 24 corresponding to the relevant detection unit. Each communication unit 233 transmits, to another communication unit 233, the state of the relevant motor 24, and receives, from the other communication unit 233, the state of another motor 24. The other motor 24 is a motor 24 corresponding to the other communication unit 233. Each drive unit 234 rotates the relevant motor 24 at a rotation speed based on the state of the other motor 24, such state received by the communication unit 233 corresponding to the relevant drive unit 234.
H02P 5/46 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
39.
FAILURE DETECTION DEVICE FOR MOTOR AND FAILURE DETECTION METHOD FOR MOTOR
One aspect of the present disclosure is a failure detection device for a motor. The failure detection device for a motor comprises an axial displacement detection unit and a failure detection unit. On the basis of signals from a plurality of magnetic sensors that are provided along the circumference of a sensor unit that detects magnetism from a magnet that rotates with the rotary shaft of the motor, the axial displacement detection unit detects an axial displacement that is the displacement between the rotary shaft and the center of a circle that passes through the plurality of magnetic sensors, and the failure detection unit detects failure of the motor on the basis of the detected axial displacement.
G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
G01R 31/00 - Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
G01R 33/02 - Measuring direction or magnitude of magnetic fields or magnetic flux
H02K 11/215 - Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
A first joint has a central axis and extends in the axial direction along the central axis. The first joint has a first joint body, an axial facing section, an operation section, and an attachment section. The first joint body is connected with a second joint along the central axis. The axial facing section faces, from the front side of the first joint body in the axial direction, a protrusion protruding from the outer circumferential surface of the second joint while the first joint body is connected with the second joint. The operation section is connected with the axial facing section, operates along an axis-intersecting direction intersecting the central axis, and thereby switches the axial facing section and the protrusion between a facing state and a non-facing state in the axial direction. The attachment member is attached to the outer circumferential surface of the first joint body. The attachment member has an operation section-regulating section that regulates the movement of the operation section while the axial facing section and the protrusion are in the facing state.
F16L 37/086 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of latching members pushed radially by spring-like elements
F16L 37/32 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
F16L 37/34 - Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
41.
DRIVE DEVICE, AND METHOD FOR CONTROLLING COOLING DEVICE
This drive device is equipped with a motor, a cooling device for sending a coolant to the motor, and a control device for controlling the cooling device. The control device is capable of executing a flow control for controlling the flow of the coolant delivered to the motor from the cooling device on the basis of the temperature of the motor and a torque command value of the motor. During the flow control, the control device is capable of switching a flow command value to be inputted into the cooling device between a first flow command value which changes on the basis of the motor temperature and a second flow command value which is greater than or equal to the first flow command value, and when the flow command value is the first flow command value, switches the flow command value from the first flow command value to the second flow command value if the torque command value is greater than or equal to the first torque command value.
The present invention comprises: a busbar that extends in a first direction; a sensor that detects a magnetic field generated by a current flowing in the busbar; a shield core having magnetic properties, the shield core surrounding the busbar and the sensor from both sides in a second direction orthogonal to the first direction and from at least one side in a third direction orthogonal to both the first direction and the second direction; a core-sealing part that seals at least part of the shield core using resin; and a support part. The shield core is fixed to the support part via the core-sealing part.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
An embodiment of this rotor comprises: a rotor core that extends along a central axis; and a pair of fans attached to respective end faces of the rotor core, the end faces facing both axial-direction sides of the rotor core. With regard to the fans attached to respective end faces of the rotor core, the direction in which one end face is oriented is defined as one axial side, and the direction in which the other end face is oriented is defined as the other axial side. The fans include: a plate-shaped body part having a first surface facing toward one axial side and a second surface facing toward the other axial side; and a first rib and a second rib that extend along the body part in the circumferential direction. The body part has a first through-hole and a second through-hole that are arranged side by side in the circumferential direction and that each interconnect the first and second surfaces. The first surface has a first opening section in which the first through-hole opens and a second opening section in which the second through-hole opens. The first rib is located on a rim radially outside the first opening section and projects toward the one axial side. The second rib is located on a rim radially inside the second opening section and projects radially outward.
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 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
A rotor according to one aspect of the present invention is rotatable about the central axis and comprises a rotor core and a fan disposed facing the rotor core in the axial direction. The rotor core has a ventilation hole penetrating through the rotor core in the axial direction. The fan has an opening disposed facing the ventilation hole. The rotor core is provided with a first rotation stopper. The fan is provided with a second rotation stopper that comes into contact with the first rotation stopper in the circumferential direction.
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 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
45.
SEMICONDUCTOR MODULE AND SEMICONDUCTOR MODULE UNIT
A semiconductor module according to one aspect of the present disclosure comprises: a first substrate; a second substrate; and a third heat dissipation member. The first substrate is provided with a first semiconductor element on one main surface thereof and is provided with a first heat dissipation member on another main surface thereof. The second substrate: is disposed to face the first substrate; is provided with a second semiconductor element on one main surface facing the one main surface of the first substrate; and is provided with a second heat dissipation member on the another main surface. At least a portion of the third heat dissipation member is sandwiched by: a first electrode provided to the main surface of the first semiconductor element facing the second semiconductor element; and a second electrode provided to the main surface of the second semiconductor element facing the first semiconductor element.
H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises an insulation substrate, a conductive layer, a semiconductor element, and a lead frame. The conductive layer is laminated on the insulation substrate and an electric circuit is patterned therein. The semiconductor element is laminated to the conductive layer with a conductive first joining member therebetween. The lead frame is laminated to the semiconductor element with a conductive and heat-fusing second joining member therebetween. The lead frame electrically connects the semiconductor element and the electric circuit. The lead frame has, at an end part of a bottom surface serving as the joining surface with the second joining member, a notch that receives the second joining member.
H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
H01L 21/60 - Attaching leads or other conductive members, to be used for carrying current to or from the device in operation
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
47.
MOTOR CONTROL DEVICE, MOTOR MODULE, MOTOR CONTROL PROGRAM, AND MOTOR CONTROL METHOD
A motor control device according to one aspect of the present disclosure comprises: an inverter circuit having an upper arm and a lower arm in each phase of three phases; a conduction control unit that controls conduction of the upper arm and the lower arm of each phase of the three phases in the inverter circuit; and a determination unit that determines switching from a two-phase modulation scheme, in which two phases among the three phases are set as PWM phases that are PWM controlled and the remaining one phase is set as a fixed phase where either the upper arm or the lower arm is always turned on, to a 120-degree energization scheme, in which two phases among the three phases are set as energization phases and the remaining one phase is set as a non-energization phase. The conduction control unit is provided with a switching compensation unit that matches the on/off states of the upper arm and the lower arm in the energization phases of the two phases before and after the switching from the two-phase modulation scheme to the 120-degree energization scheme determined by the determination unit.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
One aspect of a power conversion device of the present invention comprises H-bridge circuits corresponding to respective phases of a motor, and an auxiliary circuit corresponding to at least one of the H-bridge circuits, wherein the auxiliary circuit includes: a first rectifying element and a first inductor connected in series between a first connection point and a third connection point; a second rectifying element and a second inductor connected in series between a second connection point and the third connection point; a third rectifying element and a third inductor connected in series between the first connection point and a fourth connection point; a fourth rectifying element and a fourth inductor connected in series between the second connection point and the fourth connection point; a fifth switch connected between a positive electrode of a power source and the third connection point; a fifth rectifying element having a negative electrode terminal connected to the third connection point, and a positive electrode terminal connected to a negative electrode of the power source; a sixth rectifying element having a negative electrode terminal connected to the positive electrode, and a positive electrode terminal connected to the fourth connection point; and a sixth switch connected between the negative electrode and the fourth connection point.
H02M 7/493 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
A coupling device 100 comprises a first member 10 and a coupling part 50. The first member 10 is provided with a first flow path and an attachment part 12. The coupling part 50 is provided with: a first cylinder part 60, which is provided with one end part that connects to a second cylinder part of a second member provided with a second flow path; and a placement part 70 which is disposed at the other end part of the first cylinder part 60 and which is attached to the attachment part 12. Movement of the placement part 70 with respect to the first member 10 is restricted in the axial direction AX of the first cylinder part 60. Movement of the placement part 70 with respect to the first member 10 is possible in the radial direction RA of the first cylinder part 60. The maximum outer diameter LA of the placement part 70 is less than the maximum outer diameter LB of the first cylinder part 60.
F16L 23/024 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
F16L 29/02 - Joints with fluid cut-off means with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied
F16L 41/03 - Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
50.
METHOD FOR MANUFACTURING ROTOR, ROTOR, AND IPM MOTOR HAVING SAID ROTOR
[Solution] A method for manufacturing a rotor in which a magnet is held in a rotor core. This method for manufacturing a rotor includes: a magnet insertion step for inserting the magnet inside a magnet insertion hole in the rotor core; a rotor core holding step for using a plate, which has a pin insertion hole into which a swage pin can be inserted, to cover, from a lamination direction, at least a portion of an end face in the lamination direction of the rotor core in which the magnet has been inserted, and using the plate to press the rotor core in the lamination direction; and a swage step for using the swage pin, which has been inserted into the pin insertion hole, to swage the rotor core in the lamination direction so as to hold the magnet inside the magnet insertion hole. In the rotor core holding step, the rotor core is held in a state in which a relief portion into which the plastically-deformed steel plate enters is provided between the plate and a swage surface contacted by the swage pin. In the swage step, the rotor core in the state of being held by the plate is swaged in the lamination direction by the swage pin.
H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
One mode of a drive device according to the present invention comprises: a motor that includes a rotor capable of rotating about a central axis, and a stator facing the rotor in the radial direction; a sensor that is attached to the motor; an inverter that is electrically connected to the motor; and a housing that accommodates the motor and the inverter. The stator has a coil and a leader line extending from the coil toward one side in the axial direction. The inverter has a leader-line connector connected to the leader line. Included are a cable connector to which a power feeding cable extending from an external power source is connected, and a sensor connector to which a sensor wire extending from the sensor is connected. The housing includes an opening section opened outward of the central axis in the radial direction, and a through hole through which the power feeding cable passes. The opening section is disposed so as to overlap the leader-line connector, the cable connector, and the sensor connector in the radial direction of the central axis.
One aspect of this drive device comprises a motor, an inverter, and a housing. The motor has a rotor, a stator, and a bearing holder that holds a bearing. The housing includes: a cylindrical first housing member that surrounds the motor from the outside in the radial direction and houses the motor; and a second housing member that covers an opening on one axial-direction side of the first housing member, from the one axial-direction side of the first housing member. The inverter has a first substrate, a second substrate, and a sensor substrate that are positioned on one axial-direction side of the motor and that are connected to each other. The first substrate, the second substrate, and the sensor substrate are disposed in the stated order from the one axial-direction side to another axial-direction side. The first substrate and the second substrate are supported by the second housing member. The sensor substrate is supported by the bearing holder and has a rotation detection unit that detects rotation of the rotor.
One aspect of a drive device according to the present invention comprises a rotor, a stator, a housing, a bearing, and a bearing holder that is located on one side in the axial direction of the stator and that holds the bearing. The housing includes a cylindrical inner tube section centered on the central axis, and an outer tube section. A flow path section is provided between the inner tube section and the outer tube section. The bearing holder includes: a disc-shaped body section centered on the central axis; a bearing holding part that holds the bearing; a first fastening part fixed to the inner tube section; and a protruding part that protrudes toward the other side in the axial direction from the surface of the body section facing the other side in the axial direction. The protruding part extends in the circumferential direction running along an imaginary circle centered on the central axis when viewed from the axial direction, and fits to the inner circumferential surface of the inner tube section. A first through hole, through which a lead wire extending from a stator coil is passed, is provided in the body section. The first through hole is disposed on an imaginary circle when viewed from the axial direction.
The present invention provides a rotor that is rotatable around a central axis and that includes a rotor core including a plurality of magnet holes and a channel through which a coolant flows, and a plurality of magnets accommodated in the respective plurality of magnet holes. The plurality of magnet holes and the channel each extend in an axial direction. The plurality of magnets include a first magnet and a second magnet. The plurality of magnet holes include a first magnet hole accommodating the first magnet and a second magnet hole accommodating the second magnet. The first magnet is disposed further on an outer side than the second magnet in a radial direction. The channel is a hole located between the first magnet and the second magnet in the radial direction and extending in a direction intersecting the radial direction.
One embodiment of a rotor core according to the present invention is a rotor core of a rotor rotatable about the central axis, said rotor core having a pair of first magnet holes adjacent to each other in the circumferential direction and a first hole portion positioned between the pair of first magnet holes in the circumferential direction. When viewed in the axial direction, the pair of first magnet holes extend in a direction in which the pair of first magnet holes are more apart from each other in the circumferential direction as heading from the radial inside to the radial outside. When viewed in the axial direction, the first hole portion is provided at a position overlapping with a first virtual line that passes through the center between the pair of first magnet holes in the circumferential direction and extends in the radial direction, and has a shape that is asymmetrical across the first virtual line.
A drive device according to an embodiment of the present invention comprises: a motor having a rotor that is rotatable about a motor axis and a stator that surrounds the rotor from the radially outer side; and a housing having a cylindrical circumferential wall that surrounds the motor from the radially outer side and a cover that covers an opening on one axial side of the circumferential wall. The rotor has a cylindrical motor shaft that has a hollow part. The housing has a storage part that can store a fluid, a first flow channel that extends from the storage part to the cover, a second flow channel that is provided to the cover and is connected to the first flow channel, third and fourth flow channels that are connected to the second flow channel and that can supply the fluid to the stator, and a fifth flow channel that is connected to the second flow channel and that can supply the fluid to the hollow part.
One embodiment of this pump-equipped motor comprises: a rotor that can rotate around a central axis; a stator that faces the rotor with a gap therebetween; a housing that has a motor accommodation section that internally accommodates the rotor and the stator; and a pump that has an intake port and is attached to the housing. The housing has a retention unit in which a liquid is retained, a pump accommodation section that internally accommodates at least part of the pump, and a connection channel unit that links the interior of the pump accommodation section and the interior of the retention unit. The intake port is located in the interior of the pump accommodation section.
A drive device according to one embodiment of the present invention comprises: a motor having a rotor that rotates about a motor axis, and a stator that surrounds the rotor; a housing having a cylindrical peripheral wall part that surrounds the motor from the radially outer side of the motor axis, and a cover part that covers an opening at one axial-direction side of the peripheral wall part; a fluid that is retained in a retention part within the housing; a first supply part that supplies the fluid to the motor, the first supply part being disposed within the housing; an inverter that supplies electric power to the motor; and a busbar that electrically connects the inverter and the stator, the busbar being positioned between the stator and the cover part in the axial direction. The housing is provided with a first flow path that extends from the retention part to the cover part, and a second flow path that passes through the interior of the cover part. The second flow path has a first end section linked to the first flow path, and a second end section linked to the first supply part. The busbar is disposed between the first end section and the second end section as seen from the axial direction. The second flow path is disposed at a position different than that of the busbar as seen from the axial direction.
One embodiment of the pump-equipped motor according to the present invention comprises: a rotor rotatable about the central axis; a stator facing the rotor with a gap interposed therebetween; a housing having a motor housing portion internally housing the rotor and the stator; the pump attached to the housing; and a filter through which a liquid sent by the pump passes. The housing has: a storage portion in which the liquid is stored; a pump housing portion that internally houses at least a part of the pump; and a connection flow path portion that connects the inside of the pump housing portion and the inside of the storage portion to each other. The filter is housed in the inside of the pump housing portion.
This rotor comprises: a columnar rotor core having a plurality of core sheets and a magnet insertion hole; and a magnet inserted into the magnet insertion hole. The plurality of core sheets have first core sheets and second core sheets that are laminated adjacent to the first core sheets in a magnet insertion direction and have an insertion portion constituting part of the magnet insertion hole. The first core sheets constitute part of the inner surface of the magnet insertion hole and have a projection portion that projects toward the inside of the insertion portion when viewing the rotor from the axial direction and makes contact with the magnet. The rotor has: a housing portion that is positioned, in the first core sheets or the second core sheets, in a direction opposite to the projection direction of the projection portion with respect to the projection portion when viewing the rotor from the axial direction; and a restriction member that is housed in the housing portion at a position in the opposite direction to the projection portion and restricts the displacement of the projection portion in the opposite direction.
A tactile sensation-imparting device A comprises a plate 50, a control unit, and a motor 100. The plate 50 has a lower surface 51 that is in contact with a surface of a wearer, and an upper surface 52. The control unit outputs a control signal including a plurality of waveforms indicating a change in voltage value. The motor 100 is disposed on the upper surface 52 of the plate 10, and vibrates on the basis of the control signal. Among the plurality of waveforms, the waveform in the first cycle has the largest amplitude. It is preferable that the amplitude of the waveforms in the second and subsequent cycles be equal to or more than 0.2 times the amplitude of the waveforms in the first cycle.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
62.
ROTOR, MOTOR COMPRISING SAME, AND ROTOR PRODUCTION METHOD
This rotor comprises: a cylindrical rotor core which has a plurality of core plates that are stacked in the thickness direction and a magnet insertion hole that extends in the axial direction; and a magnet which is inserted in the magnet insertion hole. The plurality of core plates include: a first core plate having a first through hole which constitutes part of the magnet insertion hole, a second through hole which is positioned to one side in the short direction of the first through hole with respect to the first through hole, and a holding part which is positioned between the first through hole and the second through hole and which holds the magnet inserted in the magnet insertion hole; and second core plate stacked in contact with the first core plate and positioned at an end part of the rotor core in the axial direction. The second core plate has a covering part which covers at least part of the holding part and the second through hole in the axial direction of the core plates. The covering part has a staking part which is recessed in the axial direction.
This stator comprises a stator core, an insulator, a coil, and a sensor unit. The sensor unit has a sensor disposed on the stator core through a sensor holder. The sensor holder holds the sensor. The sensor holder has a base portion, and a protruding portion. The base portion is disposed on an end surface of a tooth on one side in an axial direction, and the sensor is fixed to the base portion. The protruding portion protrudes from an end surface of the base portion on the other side in the axial direction toward the other side in the axial direction. The protruding portion engages with a periphery of a recess formed on the end surface of the tooth on the one side in the axial direction.
One embodiment of the stator core manufacturing method of the present invention has: a punching step for forming a belt-like core piece extending in a first direction by punching a metal sheet; and a laminating step for, when defining a direction orthogonal to the first direction as a second direction, curving the belt-like core piece by setting one side of the belt-like core piece in the second direction as the inner diameter side and laminating the belt-like core piece in a spiral shape to form a laminated body. The belt-like core piece has: a core back piece that extends in the first direction and is provided with a plurality of slits aligning in the first direction at the end portion on one side in the second direction; and a plurality of tooth pieces that extend in the second direction from the end portion of the core back piece on one side or the other side in the second direction between the slits. In each zone between the slits adjacent to each other in the core back piece, the end edge on the other side in the second direction is provided with a first arc portion, and the end edge on one side in the second direction is provided with a second arc portion. The first arc portion and the second arc portion extend in a concentric arc shape about the arc center positioned on one side in the second direction with respect to the core back piece.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
65.
DRIVE DEVICE, AND METHOD FOR MANUFACTURING DRIVE DEVICE
One embodiment of a drive device of the present invention comprises: a rotary electric machine having a rotor that rotates about a center axis; a gear part that is connected to the rotary electric machine on one axial side of the rotary electric machine; a housing that accommodates the rotary electric machine and the gear part; and a fluid that circulates within the housing. The housing has: a first accommodation part that accommodates the rotary electric machine; a second accommodation part that accommodates the gear part; and a partition wall part located between the first accommodation part and the second accommodation part. Provided in the partition wall part is a through-hole that connects an internal space of the first accommodation part and an internal space of the second accommodation part. The first accommodation part has a bottom section located on the underside of the rotary electric machine. At least a portion of the bottom section radially faces the rotary electric machine, and the bottom section has a first surface and a second surface which are aligned in a circumferential direction. The first surface is located radially outside the second surface. The first surface and the second surface are each inclined radially outward toward one axial side, and are connected on an inside edge of the through-hole at one axial end thereof.
A drive device according to an aspect of the present invention comprises: a motive power transmission unit coupled to a rotary electrical machine on one side in the axial direction of the rotary electrical machine; and a housing that houses the rotary electrical machine and the motive power transmission unit. The housing has a gear cover that is positioned on one side in the axial direction of the motive power transmission unit and that supports a shaft of the motive power transmission unit. The gear cover has a dome part that projects to one side in the axial direction and that has the center at a dome axis extending in the axial direction. The dome part has a top section through which the dome axis passes, and an inclination section that expands from the top section outward in the radial direction. The inclination section is inclined more to the other side in the axial direction as the distance from the top section outward in the radial direction becomes greater. An inclination angle with respect to a surface orthogonal to the dome axis becomes larger as the distance from the top section outward in the radial direction becomes greater.
This method for manufacturing a laminated iron core comprises: a punching step for punching a steel sheet so as to form a back-yoke-forming portion that extends in one direction, and a plurality of teeth that extend from the back-yoke-forming portion in a direction that intersects the one direction as seen in the thickness direction of the steel sheet; and a bending step for bending the back-yoke-forming portion that was formed in the punching step in an arc as seen in the thickness direction, so as to form a back yoke portion. In the punching step, a pair of protrusions are formed at tip portions of the plurality of teeth, said pair of protrusions respectively protruding toward one side and the other side in the width direction of the teeth, and, as seen in the thickness direction of the steel sheet, and a recess is formed in a portion of the plurality of teeth, in which portion the size of a gap between teeth that are positioned adjacent to each other is smaller than the size of the pair of protrusions in the width direction, said recess having a depressed region that is recessed in the width direction and is bigger than said protrusions.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
68.
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
The present invention comprises a rotor that is capable of rotating about a central axis, a stator that is disposed radially facing the rotor with a gap interposed therebetween, and a housing. The housing has a rotary electric machine accommodation unit that accommodates the rotor and the stator. The rotary electric machine accommodation unit has a peripheral wall part that radially surrounds the stator and a plurality of fixed parts to which the stator is fixed. The plurality of fixed parts include a first fixed part and a second fixed part that are adjacent to each other in the circumferential direction. The peripheral wall part is provided with: a first projection that surrounds the radial-direction outer side of the first fixed part, projects radially outward, and extends in the axial direction; a second projection that surrounds the radial-direction outer side of the second fixed part, projects radially outward, and extends in the axial direction; and a first side wall protrusion that projects radially outward to expand an internal space within the rotary electric machine accommodation unit radially outward and extends in the axial direction. The first side wall protrusion is positioned between the first projection and the second projection in the circumferential direction.
The present invention comprises: a motor having a rotor that is rotatable around a first axis; a gear part that transmits the power of the motor to an output shaft extending along a second axis parallel with the first axis; a housing that accommodates the motor and the gear part therein; and a holding part that rotatably holds the output shaft. The housing and the holding part are different portions of a single member. The housing has a first hole part through which the output shaft passes. The holding part has: a first flange part located closer to one axial side than the first hole part is and closer to the other axial side than the end part of the housing on the one axial side is, extending from the outside surface of the holding part to the radially outer side, and connecting to the outside surface of the housing; and a second hole part through which the output shaft passes. The first hole part and the second hole part face each other in the axial direction.
In one embodiment, an angle detection device of the present invention includes a sensor magnet attached to a rotating shaft of an N-phase motor (N is an integer of 3 or more) having a rotor magnet, M (M is an integer of 3 or more) magnetic sensors that detect changes in magnetic flux due to rotation of the sensor magnet, a storage device that stores a relational expression expressing the relationship between the output values of the M magnetic sensors and the mechanical angle of the rotating shaft, and a mechanical angle, which corresponds to at least one rotational position of the rotor magnet, as a level switching angle, and a processing device that calculates the mechanical angle on the basis of the output value and the relational expression and outputs N-phase pulse signals having a 360/N degree phase difference in electrical angle on the basis of the calculated value of the mechanical angle and the level switching angle, wherein the processing device switches the level of the pulse signal of any one phase of the N-phase pulse signals when the calculated value of the mechanical angle matches the level switching angle.
G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
A housing of this motor has a bearing holder for holding a bearing that rotatably supports a shaft. A magnet axially faces one axial end of the shaft, which is made of a magnetic material. A yoke is made of a magnetic material, and at least a portion of the yoke is disposed on one side of the magnet in the axial direction. A first contact portion of the housing is disposed radially outward relative to the magnet, and contacts at least a portion of the other axial end surface of the yoke. A second contact portion contacts at least a portion of one axial end surface of the yoke.
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
This motor comprises a rotor, a stator, a housing, an acceleration sensor, and a control unit. The rotor is rotatable about the central axis extending in the axial direction. The stator drives the rotor. The housing accommodates the rotor and the stator. The acceleration sensor detects an acceleration applied to the housing. The control unit controls electric conduction to the stator. The control unit performs a rotation speed change which is any one of: starting of rotation of the rotor; increasing and/or decreasing of the rotation speed of the rotor; and stopping of rotation of the rotor.
A41D 13/002 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
A41D 13/005 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
A cooling device, according to one embodiment of the present disclosure, is for cooling heating elements, and comprises: a housing; a first flow path; and a second flow path. The housing has an inflow port and an outflow port for a refrigerant, and includes a first region which is in contact with a first heating element, and a second region which is in contact with a second heating element. The first flow path connects the inflow port and the outflow port, and overlaps with the first region and the second region in a planar view of the housing. The second flow path joins the first flow path at a position downstream of the first region and upstream of the second region. In addition, the second flow path has a guide portion for guiding the refrigerant, which flows through the second flow path, to the first flow path.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises a semiconductor device, a cooling plate, and a flow path forming member. The cooling plate is provided on one main surface of the semiconductor device. The flow path forming member: is provided on the other main surface opposite to the one main surface of the semiconductor device; includes a bottom member abutting on the other main surface, and lateral members standing upright from opposing ends of the bottom member; and forms a flow path for a refrigerant.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises a first substrate, a second substrate, and a cooler. The first substrate is provided with a first semiconductor element on one main surface thereof, and is provided with a cooling plate on the other main surface thereof. The second substrate is disposed oppositely from the first substrate, is provided with a second semiconductor element on one main surface thereof that faces the one main surface of the first substrate, and is provided with a cooling plate on the other main surface thereof. The cooler is disposed between the first substrate and the second substrate and, at a heat transfer part, at least surfaces of the cooler which face the one main surface of the first substrate and the one main surface of the second substrate are covered with an insulation layer.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
77.
ROTOR, ROTARY ELECTRIC MACHINE, AND DRIVING DEVICE
One aspect of a rotor according to the present invention is a rotor which is disposed inside an annular stator and can rotate about a center axis line, the rotor comprising: a shaft extending along the center axis line; a rotor core fixed to the shaft; and an annular end plate which is provided with an insertion hole into which the shaft is inserted, and is disposed axially side by side with the rotor core. The shaft is provided with: a cavity part provided inside the shaft; and a through-hole which extends radially outside from the cavity part and is open in the outer circumferential surface of the shaft. The end plate has a first side surface facing one side in the axial direction. The first side surface is provided with a groove part having: a first end section connected to the opening of the through-hole; and a second end section located radially outside the first end section. The groove part has a first flow path section extending in a direction oblique to the radial direction. The second end section is located at the first flow path section.
The present invention comprises: a motor rotatable around a first axis; a gear unit that transfers a driving force of the motor to an output shaft extending along a second axis parallel to the first axis; a control unit arranged on one side with respect to the first axis in a first direction orthogonal to the first axis; a housing; a first auxiliary machine arranged on the other side with respect to the first axis in the first direction and on one side with respect to the first axis in a second direction orthogonal to the first direction; a second auxiliary machine arranged on the other side in the first direction and on the other side in the second direction with respect to the first axis; a first connection member connecting the control unit with the first auxiliary machine; and a second connection member connecting the control unit with the second auxiliary machine. Of the first auxiliary machine and the second auxiliary machine, one is a pump and the other is a cooler. The second axis is arranged on the one side with respect to the first axis in the second direction. A part of the first connection member is arranged between the first axis and the second axis. A part of the second connection member is arranged on the other side with respect to the first axis in the second direction.
In the present invention, one embodiment of a drive device comprises: a rotor having a shaft that extends along a center axis line; a stator opposing the rotor with a gap therebetween; a housing accommodating the rotor and the stator; and a resolver having a resolver rotor fixed to the shaft, and a resolver stator located radially outside the resolver rotor. The housing has a lateral wall part located axially on one side of the rotor. The lateral wall part has a tubular section inside which the resolver stator is held. The tubular section has: a first inner circumferential surface surrounding an outer circumferential surface of the resolver stator; a first surface that is connected to an end on one axial side of the first inner circumferential surface, and that faces the one axial side; a second surface that is connected to an end on the other axial side of the first inner circumferential surface, and that faces the other axial side; and one or more crimping sections provided to the first surface. The one or more crimping sections include a stopper part that protrudes radially inward with respect to the outer circumferential surface of the resolver stator and that makes contact with an end surface on one axial side of the resolver stator.
H02K 24/00 - Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
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
One aspect of a rotating electric machine according to the present invention comprises: a rotor; a stator; a housing including a first accommodating portion accommodating the rotor and the stator therein; and a hollow tubular member extending in an axial direction and accommodated inside the first accommodating portion. A stator core includes a stator core body and at least one fixation portion protruding radially outward from an outer peripheral face of the stator core body. The at least one fixation portion comprises an upper fixation portion positioned on the upper side of a central shaft in the vertical direction. The upper fixation portion is positioned on one side in a circumferential direction of the tubular member. The tubular member includes a first opening that opens inside the first accommodating portion and is positioned on the upper side of the stator core body in the vertical direction. At least a part of the tubular member, when seen in the vertical direction, overlaps a tooth positioned on an uppermost side in the vertical direction among a plurality of teeth. An inner face of the first accommodating portion includes an opposing portion opposing a radially outer side of the upper fixation portion via a gap. The first opening opens toward the opposing portion.
In an aspect of the present invention, a motor comprises an annular stator core including a plurality of teeth portions extending along a radial direction and a plurality of conductor-connected bodies each including a plurality of conductors connected to each other. The conductor connected bodies are wave-wound along a circumferential direction of the stator core in each slot between the plurality of teeth portions. The plurality of conductor-connected bodies are arrayed in layers arranged in a radial direction in the slot. Among the layers in which the conductor-connected bodies are arranged in the slot, the radially outermost one is referred to as an outermost layer and the radially innermost one is referred to as an innermost layer. Each conductor-connected body includes a first terminal portion and a second terminal portion as both end portions. At least one of the plurality of first terminal portions and the plurality of second terminal portions is drawn from the outermost layer of the slot toward one side in an axial direction. At least one of the plurality of first terminal portions and the plurality of second terminal portions is drawn from the innermost layer of the slot toward the one side in an axial direction.
In one embodiment, this rotor is able to rotate about a central axis and comprises: a shaft extending in the axial direction; a rotor core fixed to the shaft; and an end plate arranged lined up in the axial direction with the rotor core. The shaft has a gap provided in the interior of the shaft, and a through hole connecting to the gap. The through hole has a first opening that opens on an outer peripheral surface of the shaft. The end plate has a first groove extending in the radial direction. The first groove has a second opening that opens on the reverse side from the side where the rotor core is located in the axial direction. A radially inward end of the first groove connects to the first opening. An inner surface of the first groove has a groove bottom surface located on the side where the rotor core is located in the axial direction. The groove bottom surface has a first surface that, going radially outward, draws increasingly apart from the rotor core in the axial direction.
This cooling unit has: a first cold plate and a second cold plate; an inflow pipe; and an outflow pipe. The first cold plate and the second cold plate are respectively disposed on both sides of a heat-generating component in a first direction. The inflow pipe allows refrigerant to flow into the first cold plate and the second cold plate. The refrigerant flowing out from the first cold plate and the second cold plate passes through the outflow pipe. At least a section of the first cold plate and at least a section of the second cold plate overlap in the first direction. At least a section of the inflow pipe and at least a section of the outflow pipe are disposed between the first cold plate and the second cold plate in the first direction.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
3422. The total number of high refractive index films 130a and low refractive index films 130b is an even number. For the high refractive index film 130a and the low refractive index film 130b of the antireflection layer 130, the ratio of the thickness of the thicker film to the thickness of the thinner film of two adjacent films is 6 times or less. The average reflectance of the antireflection layer 130 in a wavelength range of 300-400 nm is 40% or more.
One aspect of a rotor of the present invention has a plurality of magnetic poles arranged along the circumferential direction, a rotor core extending in a columnar shape centered on a central axis, and a plurality of magnets that are held in a magnet hole of the rotor core and form magnetic poles. A straight line passing through the center of the magnetic poles when seen axially is a d-axis. An outer circumferential surface of the rotor core, which faces radially outward, has a plurality of outer end portions located on the d-axis of the respective magnetic poles, and a plurality of retract portions, each of which is located between the outer end portions in the circumferential direction, and offset to a radially inner side relative to the outer end portions.
In a drive device according to an aspect of the present invention, a housing has a side wall, a holding cylindrical part, and a projecting part. The holding cylindrical part holds a bearing. The holding cylindrical part is provided with a first opening part penetrating in the radial direction of a third axis. The first opening part has an inlet end positioned on the outer circumferential surface of the holding cylindrical part. The inlet end opens on one side in a third direction. The projecting part is positioned at one side from the first opening part in the third direction and between a second axis and the third axis in a second direction. The projecting part has a first surface oriented to one side in the second direction and a second surface oriented to the other side in the second direction. The first surface receives a fluid scraped up by a gear, and guides the fluid to the first opening part. The second surface receives a fluid scraped up by a ring gear, and guides the fluid to the first opening part.
One aspect of this drive device according to the present invention comprises: a motor that has a rotor that rotates about a center axis and a stator that radially faces the rotor; a cylindrical water jacket that is centered about the center axis and opens on both sides in the axial direction; and a housing that contains the motor and the water jacket. The stator has an annular stator core obtained by helically laminating band-like plates. The water jacket is disposed on the radial inside of the housing. The water jacket has a shrink-fit part that holds the outer circumferential surface of the stator core.
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
One aspect of a drive device according to the present invention includes a motor including a rotor that can rotate around a central axis and a stator facing the rotor across a gap in a radial direction, a fan that rotates with the rotor, and a housing accommodating the motor. The stator includes an annular stator core and a coil mounted on the stator core. The coil includes a pair of coil ends respectively protruding in the axial direction from the end faces of the stator core at opposite sides thereof in the axial direction. The housing includes a water jacket externally surrounding the stator in the radial direction. The water jacket is provided with a plurality of fins on an inner circumferential surface of the water jacket, the fins being disposed on the outside of the coil ends in the radial direction. The fan includes an outlet that opens outward in the radial direction. The outlet, the coil ends, and the fins are juxtaposed in the radial direction.
One aspect of a drive device according to the present invention comprises a motor, a power transmission part, a housing, first and second bearings, and a flow path in which a fluid flows. An end part on one side in the axial direction of a first shaft of the motor has a connection opening in which a spline groove is provided. An end part on the other side in the axial direction of a second shaft of the power transmission part has a connection protrusion in which a spline projection is provided. The first shaft and the second shaft are connected by the spline groove and the spline projection meshing with each other. Provided to a partition wall of the housing is a communicating hole via which a motor chamber and a gear chamber are in communication. The inner peripheral surface of the communicating hole holds the first bearing and the second bearing. Between the axial direction of the second bearing and the first bearing in the communicating hole is provided a connection space into which the connection opening opens. The flow path has a first flow path that connects the gear chamber and the connection space and a second flow path that connects the connection space and the motor chamber.
A driving apparatus according to an aspect of the present invention comprises: a motor that rotates about a center axis; a shaft that rotates around the center axis by means of power of the motor; a first gear that is provided in the outer circumferential surface of the shaft; a second gear part that has a large-diameter gear engaged with the first gear and a small-diameter gear smaller in diameter than the large-diameter gear and that rotates around an intermediate axis, integrally with the large-diameter gear; a differential device that has a third gear engaged with the small-diameter gear and that rotates around a differential axis; and a parking mechanism that has a parking gear provided in the outer circumferential surface of the shaft, a parking pole, and a transmission part that transmits power to the parking pole. The parking gear is disposed between the motor and the first gear in an axial direction, and at least partially overlaps the large-diameter gear in the axial direction.
One embodiment of this drive device comprises: a motor having a first shaft; a power transmission unit having a second shaft; a housing; and a flow channel through which a fluid flows. The first shaft and the second shaft are mutually connected by engagement between a spline groove in a recess section and a spline protrusion of a protrusion section. The housing is provided with a dividing wall that partitions the interior of the housing into a motor chamber and a gear chamber. The dividing wall is provided with an interconnecting hole interconnecting the motor chamber and the gear chamber. An inner peripheral surface of the interconnecting hole holds a first bearing and a second bearing. An interconnecting space to which the recess section is open is provided in an interval in the axial direction between the first bearing and the second bearing in the interconnecting hole. The flow channel inlcudes: a first flow channel linking a first storage part to the interconnecting space; a second flow channel linking the interconnecting space to the inside of the recess section; and a third flow channel linking the interconnecting space to a second storage part.
This rotor is rotatable about the central axis and comprises: a rotor core; and annular conductive parts arranged at axially opposite sides of the rotor core. The rotor core has a plurality of flux barrier groups arranged at intervals along the circumferential direction. The plurality of flux barrier groups each include a plurality of flux barriers arranged radially side by side, and the plurality of flux barriers each have a shape protruding radially inward as viewed in the axial direction. One or more flux barriers, of the plurality of flux barriers in each of the flux barrier groups, have disposed thereinside conductor bodies electrically connected to the annular conductive parts. As viewed in the axial direction, when the half of the outer diameter of the rotor core is defined as Ror, the half of the outer diameter of the annular conductive parts is defined as Roer, and the minimum distance from the central axis line to the radially outermost one of the flux barriers which have disposed thereinside the conductor bodies is defined as Rocb, the relation of Rocb
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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
In a rotor according to one aspect of the present invention, a shaft has: a first shaft hole that extends in the axial direction; and a second shaft hole that extends from the first shaft hole radially toward the outside and opens on the outer circumferential surface of the shaft. A rotor core has a plurality of core holes that extend in the axial direction and are disposed at intervals therebetween in the circumferential direction. A plate has through-holes that overlap the core holes as seen from the axial direction, and a flow path section that joins the second shaft hole and the through-holes. A second distance from the center axis to the outer edge of the plate is less than a first distance from the center axis to the outer edge of the rotor core.
A motor control device according to one aspect of the present disclosure comprises an inverter circuit, a conduction control unit, and a determination unit. The inverter circuit has an upper arm and a lower arm for each of three phases. The conduction control unit controls the conduction of the upper arm and the lower arm in each phase of three phases in the inverter circuit. The determination unit determines the switching of a 120 degree conduction method, in which two of the three phases are conductive phases and the remaining one phase is a non-conductive phase, to a two phase modulation method in which two of the three phases are PWM phases that are PWM-controlled and the remaining one phase is a fixed-phase in which any one of the upper arm and the lower arm is always on. The conduction control unit includes a switching compensation unit which matches, with each other, on/off states of the upper arm and the lower arm in the same phase before and after the switching from the 120-degree conduction method to the two-phase modulation method, which is determined by means of the determination unit.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
95.
MOTOR CONTROL DEVICE, MOTOR MODULE, MOTOR CONTROL PROGRAM, AND MOTOR CONTROL METHOD
The motor control device according to one embodiment of the present disclosure comprises an inverter circuit, a section determination unit, and a conduction control unit and controls a motor by a 120-degree energization method or a 180-degree energization method. The inverter circuit has an upper arm and a lower arm for each of three phases. The section determination unit determines a section according to an electrical angle of the motor among a plurality of sections divided by ranges having electrical angles of the motor different from each other. The conduction control unit controls, on the basis of the section determined by the section determination unit, the conductions of the upper arms and lower arms of the plurality of energization phases of the inverter circuit. The conduction control unit is provided with a section switching compensation unit that performs processing for, when switching to the section determined by the section determination unit, suppressing the negative current of an energization phase having the highest voltage or the positive current of an energization phase having the lowest voltage among the plurality of energization phases in the switching destination section.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
This motor comprises a rotor and a stator. The rotor rotates about a rotary shaft. The stator is disposed radially outside of the rotor. The stator has a stator core and a coil. The stator core has a core back and teeth. The core back has a cylindrical shape which surrounds the rotary shaft and extends in the axial direction thereof. The plurality of teeth extend radially inside from the core back and are disposed in the circumferential direction of the stator core. The coil is formed by winding a conductive wire around the teeth. The diameter of the conductive wire is 1.32-1.50 mm inclusive.
One embodiment of the drive device of the present invention comprises a motor, a fan rotating together with the rotor of the motor, a bearing, and a housing for housing the motor. The rotor is provided with a blast hole penetrating in the axial direction. The fan has: a cylindrical cylinder portion centered on the central axis line; and an inlet positioned on the inside of the cylinder portion in the radial direction and connecting to the blast hole. The housing has: a base portion covering the motor from one side in the axial direction; and a cylindrical holding portion projecting from the surface of the base portion on the other side in the axial direction to the other side in the axial direction. The bearing is held on the inside of the holding portion in the radial direction. The holding portion is positioned on the inside of the cylinder portion in the radial direction. At least parts of the holding portion and the cylinder portion are overlapped with each other in the axial direction. The base portion has a tilted surface that faces the other side in the axial direction and tilts to the other side in the axial direction toward the inside in the radial direction.
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 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
98.
PARKING DEVICE, DRIVE DEVICE, AND METHOD FOR MANUFACTURING DRIVE DEVICE
One aspect of a drive device of the present invention is a parking device for locking rotation of one shaft of a power transmission part disposed inside a housing, the parking device comprising a parking mechanism disposed inside the housing, and an actuator which has a rotary part rotating around a drive axis and is disposed outside the housing. The parking mechanism comprises a parking gear mounted on an outer circumferential surface of the shaft, a parking pole, and a transmission part which has a rotation shaft connected to the actuator, and transmits a drive force of the actuator to the parking pole. The rotary part has a cylindrical-shaped cylinder part which has an inner circumferential surface with a plurality of spline grooves extending in an axial direction of the drive axis, and a first surface oriented to one side in the axial direction of the drive axis. The rotation shaft has a first end part, which has an outer circumferential surface with a plurality of spline protrusions extending in the axial direction of the drive axis and is inserted into the cylinder part, and a second surface opposing the first surface.
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
F16H 57/023 - Mounting or installation of gears or shafts in gearboxes, e.g. methods or means for assembly
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
One aspect of the present invention relates to a drive device comprising: a motor having a rotor rotatable about a central axis and a stator; an inverter disposed on one side of the motor in the axial direction and connected to the motor; a power transmission unit disposed on the other side of the motor in the axial direction; and a housing having a motor accommodation space, an inverter accommodation space, and a gear accommodation space. The power transmission unit has a reduction gear that transmits the power of the motor and a differential gear that outputs, from an output shaft, the power transmitted from the reduction gear. The housing has a plurality of mounting portions that are fixed to a vehicle body. The mounting portions each have a first mounting portion, a second mounting portion, and a third mounting portion. The first mounting portion is disposed on the other side of the motor in the axial direction. The second mounting portion is disposed on the one side of the motor in the axial direction. The gear accommodation space has a differential gear accommodation space that accommodates the differential gear. The third mounting portion is provided in the portion of the housing which surrounds the differential gear accommodation space.
A power conversion device according to an aspect of the present disclosure comprises a base plate; a substrate on the base plate; a heating element and a temperature sensor provided on the substrate; and a control unit, and is connected to a load. The control unit comprises: a heat quantity calculation unit that calculates a heat quantity of the heating element on the basis of information related to a load; a coolant temperature calculation unit that calculates the temperature of a coolant on the basis of a flow rate of the coolant cooling the heating element; a thermal resistance calculation unit that calculates a resistance value of thermal resistance in a thermal model that indicates, as the thermal resistance, heat transfer between two different sites among the heating element, the base plate, the substrate, and the coolant, on the basis of the flow rate and the temperature of the coolant; a base plate temperature calculation unit that calculates the temperature of the base plate on the basis of the heat quantity and the thermal resistance; and a heating element temperature calculation unit that calculates the temperature of the heating element on the basis of the heat quantity and the temperature of the base plate.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
G01K 1/14 - Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
G01K 7/00 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
patents
