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公开(公告)号：US20190097497A1
公开(公告)日：2019-03-28
申请号：US16081478
申请日：2017-02-28
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA
CPC classification number: H02K7/116 , H02K5/04 , H02K15/022 , H02K15/16 , H02K29/08
Abstract: A motor includes a rotor including a shaft, a rotor magnet, a sensor yoke disposed axially upward from the rotor magnet, a sensor magnet supported by the sensor yoke, and an input gear including a gear portion to transmit torque to outside, an armature disposed radially outward of the rotor magnet, a bearing mechanism that supports the rotor to be rotatable, a housing that covers the armature, the rotor, and the bearing mechanism, and a rotation detection sensor facing the sensor magnet to detect rotation of the rotor.
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公开(公告)号：US20220196137A1
公开(公告)日：2022-06-23
申请号：US17603964
申请日：2020-04-15
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA
IPC: F16H57/021 , B60K1/00 , F16C35/063
Abstract: A motor assembly includes a first shaft rotatable about a motor axis, a second shaft that extends along the motor axis and is connected to the first shaft on one side in an axial direction of the first shaft to be movable in the axial direction, a first bearing that supports an end at another side in the axial direction of the first shaft, a second bearing that supports an end at one side in the axial direction of the first shaft, a third bearing that supports an end at another side in the axial direction of the second shaft, and a fourth bearing that supports an end at one side in the axial direction of the second shaft. An elastic portion is on a surface opposing another side in the axial direction of the outer ring of the first bearing.
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公开(公告)号：US20220194230A1
公开(公告)日：2022-06-23
申请号：US17603966
申请日：2020-04-09
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA
Abstract: A drive device that rotates an axle of a vehicle includes a motor, a decelerator connected to the motor, a differential connected to the motor via the decelerator, a housing that accommodates the motor, the decelerator, and the differential, an oil pump to send, to the motor, oil accommodated in the housing, and a controller to control the motor. The controller drives the oil pump after the ignition switch of the vehicle is turned off.
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公开(公告)号：US20220173641A1
公开(公告)日：2022-06-02
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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公开(公告)号：US20210044173A1
公开(公告)日：2021-02-11
申请号：US17040541
申请日：2019-03-22
Applicant: NIDEC CORPORATION
Inventor： Yuki ISHIKAWA , Hayato NAKAMA , Keisuke FUKUNAGA
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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Patent Agency Ranking
公开(公告)号：US20200266680A1
公开(公告)日：2020-08-20
申请号：US16773984
申请日：2020-01-28
Applicant: NIDEC CORPORATION
Inventor： Shohei FUJIMOTO , Kazunori TATEGATA , Keisuke FUKUNAGA
Abstract: A motor unit includes a motor including a rotor arranged to rotate about a motor axis, and a stator arranged opposite to the rotor; a housing arranged to house the motor; an inverter electrically connected to the motor; a busbar arranged to connect the motor and the inverter to each other; and a cover portion. The housing includes a motor housing portion arranged to house the motor, a top wall portion arranged to cover an upper side of the motor housing portion, and a work-use hole portion arranged to pass through the top wall portion. The cover portion is arranged to close an upper opening of the work-use hole portion. The cover portion includes a pressure regulating passage arranged to regulate the pressure in an interior of the housing.
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公开(公告)号：US20200006995A1
公开(公告)日：2020-01-02
申请号：US16484129
申请日：2018-03-23
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA
Abstract: An electric motor includes a housing including a circumferential housing wall centered around a central axis, an annular stator fixedly mounted inside of the housing and including coils to generate a time-varying magnetic field, a busbar unit including a busbar holder and at least one busbar to electrically connect at least one coil of the stator to a power source to energize the at least one coil, and a rotor rotatably mounted inside of the housing to be rotated by an interaction with the magnetic field generated by the stator. The housing wall may include a housing wall engagement structure at an inner surface thereof engaged or configured to be engaged with a busbar unit engagement structure provided on the busbar unit. The housing wall engagement structure may include at least one protrusion defined by a portion of the housing wall dented into the interior of the housing.
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公开(公告)号：US20190393752A1
公开(公告)日：2019-12-26
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：US20190252937A1
公开(公告)日：2019-08-15
申请号：US16315172
申请日：2016-07-29
Applicant: Nidec Corporation
Inventor： Keisuke FUKUNAGA
Abstract: An annular stator, a center of which is a central axis extending in an up-and-down direction, includes a stator core including teeth arrayed in a circumferential direction, and coils defined by a conducting wire wound on each of the teeth. The coils include coil groups in a U-phase, a V-phase, and a W-phase, and include connecting wires that relay the coils in the same phase. On each of upper and lower sides of the stator core, the connecting wire in one phase is in an area distant from the connecting wires in other phases in the circumferential direction.
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公开(公告)号：US20160294253A1
公开(公告)日：2016-10-06
申请号：US15038213
申请日：2014-11-21
Applicant: NIDEC CORPORATION
Inventor： Keisuke FUKUNAGA
CPC classification number: H02K7/06 , F16H25/2204 , F16H2025/2078 , H02K1/278 , H02K1/28 , H02K7/083
Abstract: A rotary unit of this motor has a plurality of magnets, a hollow shaft which has a tubular shape, and a ball nut. Each of the magnets is in contact with an outer surface of the hollow shaft. The ball nut is disposed on a radially inner side of the hollow shaft. At least a portion of the magnets, at least a portion of the hollow shaft, and at least a portion of the ball nut overlap in a circumferential direction. The hollow shaft and the ball nut are made of a magnetic material. An inner circumferential surface of the hollow shaft and an outer circumferential surface of the ball nut are in contact with each other.
Abstract translation: 该电动机的旋转单元具有多个磁体，具有筒状的空心轴和滚珠螺母。 每个磁体与中空轴的外表面接触。 滚珠螺母设置在中空轴的径向内侧。 磁体的至少一部分，空心轴的至少一部分以及滚珠螺母的至少一部分在圆周方向上重叠。 中空轴和滚珠螺母由磁性材料制成。 中空轴的内周面和滚珠螺母的外周面彼此接触。
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