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公开(公告)号：US11588368B2
公开(公告)日：2023-02-21
申请号：US17564380
申请日：2021-12-29
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
IPC: H02K5/16
Abstract: An electric motor includes a housing with a tubular wall extending in an axial direction of the housing and a closures positioned at opposite axial ends of the tubular wall, a stator fixedly mounted inside of the housing, a rotor rotatably mounted inside of the housing, and a bearing rotatably supporting the rotor. At least one of the closures includes a rotor supporting portion. The rotor supporting portion includes a through hole configured to receive a portion of the rotor. The through hole has a triangular or polygonal shape, and a radius of an inscribed circle of the triangular or polygonal shape of the through hole is larger than a radius of the portion of the rotor received in the through hole.
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公开(公告)号：US11431220B2
公开(公告)日：2022-08-30
申请号：US16655350
申请日：2019-10-17
Applicant: Nidec Corporation , Nidec Tosok Corporation
Inventor： Shuhei Nakamatsu , Keisuke Fukunaga , Naohiro Wada , Masumi Mizutani
Abstract: A motor assembly includes a motor, a housing that houses the motor, an inverter that is electrically connected to the motor, an inverter case that houses the inverter and is provided integrally with the housing, a wire harness including a first connector electrically connected to a connector positioned on a side surface of the inverter case, a second connector electrically connected to a connector of the housing, and an electric wire electrically connecting the first connector and the second connector, and a side connector cover provided over the side surface of the inverter case, covering the first connector laterally.
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公开(公告)号：US11239722B2
公开(公告)日：2022-02-01
申请号：US16484127
申请日：2018-03-07
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
IPC: H02K5/16
Abstract: A housing for an electric motor includes a tubular wall extending in an axial direction of the housing, and closures at opposite axial ends of the tubular wall to rotatably support opposite axial end portions of a rotor. At least one of the closures is separate from the tubular wall and includes a radially inner portion and a radially outer flange that, in an assembled state, is in physical contact with a radially inner surface of the tubular wall and extends from the radially inner portion of the separate closure towards the opposite axial end of the tubular wall.
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公开(公告)号：US10790717B2
公开(公告)日：2020-09-29
申请号：US15956088
申请日：2018-04-18
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
Abstract: A bus bar unit used in a motor comprising a coil may include a bus bar electrically connected to the coil of the motor; and a bus bar holder comprising a resin material and configured to hold the bus bar. The bus bar may include a plurality of bus bar members including a metal material. The plurality of bus bar members may include a first bus bar member which has a terminal portion connected to a lead wire configuring the coil, and a first connection portion. T connection portion may be configured by connecting the first connection portion of the first bus bar member and a second connection portion provided in a second bus bar member which is the other one of the plurality of bus bar members, and at least a portion of the connection portion of the bus bar is held in the bus bar holder.
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公开(公告)号：US12101003B2
公开(公告)日：2024-09-24
申请号：US17602370
申请日：2020-04-09
Applicant: Nidec Corporation
Inventor： Shohei Fujimoto , Shuhei Nakamatsu , Keigo Nakamura , Keisuke Fukunaga
Abstract: A motor assembly includes a motor with a rotor rotatable about a motor shaft and a stator located radially outside the rotor, an inverter to supply power to the motor, a housing provided with a motor housing space that houses the motor and an inverter housing space that houses the inverter, and a first bus bar that electrically connects the motor and the inverter. The housing includes a partition wall portion that partitions the motor housing space and the inverter housing space and is provided with a through hole penetrating in the axial direction. The first bus bar is connected to a coil wire extending from the stator at an end on one side in the axial direction of the stator in the motor housing space, and extends to the inverter housing space through the through hole.
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Patent Agency Ranking
公开(公告)号：US12040679B2
公开(公告)日：2024-07-16
申请号：US17436584
申请日：2020-01-10
Applicant: NIDEC CORPORATION
Inventor： Shuhei Nakamatsu , Hitoshi Kuroyanagi , Keisuke Fukunaga
IPC: H02K11/30 , B60L50/51 , H02K1/32 , H02K5/20 , H02K5/22 , H02K7/116 , H02K9/19 , H02K9/193 , H02K11/33
CPC classification number: H02K5/22 , B60L50/51 , H02K1/32 , H02K5/20 , H02K5/203 , H02K5/225 , H02K7/116 , H02K9/19 , H02K9/193 , H02K11/30 , H02K11/33 , H02K2205/09
Abstract: A motor unit according to an aspect of the present invention includes: a motor having a rotor that rotates about a motor axis and a stator located radially outside the rotor; an inverter that controls a current to be supplied to the motor; a housing body having a motor housing portion that houses the motor and an inverter housing portion that houses the inverter; and an inverter housing configured to cover an opening of the inverter housing portion while supporting the inverter. The housing body is provided with a first cooling path through which a first refrigerant for cooling the motor flows. The inverter housing is provided with a second cooling path through which a second refrigerant for cooling the inverter flows.
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公开(公告)号：US11929658B2
公开(公告)日：2024-03-12
申请号：US18106542
申请日：2023-02-07
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
IPC: H02K5/16
CPC classification number: H02K5/165 , H02K2207/03
Abstract: An electric motor includes a housing with a tubular wall extending in an axial direction of the housing and a closures positioned at opposite axial ends of the tubular wall, a stator fixedly mounted inside of the housing, a rotor rotatably mounted inside of the housing, and a bearing rotatably supporting the rotor. At least one of the closures includes a rotor supporting portion. The rotor supporting portion includes a through hole configured to receive a portion of the rotor. The through hole is defined by a closed shape including at least three or more straight sides, and a radius of an inscribed circle of the closed shape of the through hole is larger than a radius of the portion of the rotor received in the through hole.
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公开(公告)号：US11732795B2
公开(公告)日：2023-08-22
申请号：US17603969
申请日：2020-04-09
Applicant: Nidec Corporation
Inventor： Yuki Ishikawa , Takanobu Oyama , Keisuke Fukunaga
CPC classification number: F16H57/0475 , B60K1/00 , B60K11/02 , F16H57/037 , F16H57/0404 , F16H57/0424 , F16H57/0441 , F16H57/0457 , F16H57/0483 , H02K9/19 , B60K2001/001 , F16H2057/02034 , F16H2057/02052
Abstract: A drive device includes a motor, a housing, an oil passage in the housing, an oil pump in which a portion of the oil passage is provided, and a strainer inside the housing and in which a portion of the oil passage is provided. The oil passage includes an oil sump in which oil is accumulated and a suction path connecting the oil sump and the oil pump. A central axis of the oil pump extends in a direction intersecting the vertical direction. The strainer is in the suction path. The strainer includes a suction port to suction oil from the oil sump, a discharge port to discharge oil toward the oil pump, and a filter. The suction port opens downward in the vertical direction. The discharge port opens in a direction intersecting the vertical direction toward the oil pump.
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公开(公告)号：US11728707B2
公开(公告)日：2023-08-15
申请号：US17040541
申请日：2019-03-22
Applicant: NIDEC CORPORATION
Inventor： Yuki Ishikawa , Hayato Nakama , Keisuke Fukunaga
CPC classification number: H02K5/22 , B60B35/122 , B60K17/16 , B60K17/24 , H02K9/19
Abstract: According to one aspect of the present disclosure, a driving device is a driving device for rotating an axle of a vehicle and includes: a motor having a rotor rotating about a motor axis extending in a horizontal direction orthogonal to a vertical direction; a reduction gear connected to the rotor; a differential gear connected to the motor via the reduction gear; and a housing configured to house the motor, the reduction gear and the differential gear therein. The housing has a protrusion that protrudes upward in the vertical direction, and at least one circumferential rib that extends in a circumferential direction. The protrusion has a female screw hole into which an eye bolt can be tightened. At least one of the circumferential ribs is connected to the protrusion.
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公开(公告)号：US11411465B2
公开(公告)日：2022-08-09
申请号：US16769301
申请日：2018-12-04
Applicant: Nidec Corporation
Inventor： Keisuke Fukunaga
Abstract: A gear system connected to a motor, the motor including a motor shaft, a motor housing, and a motor flange, is provided. A first gear is attached to an axially lower end of the motor shaft. A second gear is attached to an axially upper end of a fixed shaft, the second gear meshing with the first gear and being rotatable with respect to the fixed shaft. A pivot shaft is directly or indirectly attached to the axially upper end of the fixed shaft, the pivot shaft being at least partially fixed in a third through-hole of a motor flange.
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