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公开(公告)号：US20220345009A1
公开(公告)日：2022-10-27
申请号：US17727858
申请日：2022-04-25
Applicant: Nidec Corporation
Inventor： Hiroki YOKOZAWA , Kazuyuki YAMAMOTO , Daisuke OGASAWARA , Keigo NAKAMURA
Abstract: A drive motor module includes a motor, an inverter electrically connected to the motor, a gear connected to a drive shaft extending in parallel with a motor axis of the motor to transfer power from the motor to the drive shaft, and a housing including a motor housing that houses the motor, an inverter housing that houses the inverter, and a gear housing that houses the gear. The inverter housing is spaced apart from the drive shaft in a radial direction of the drive shaft. The gear housing is located at one side of the drive shaft in a longitudinal direction. and the housing includes at least one rib connecting the inverter housing and the gear housing.
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公开(公告)号：US20230006507A1
公开(公告)日：2023-01-05
申请号：US17852396
申请日：2022-06-29
Applicant: NIDEC CORPORATION
Inventor： Keigo NAKAMURA , LiPeng LI , Takashi SHIRAISHI , Yoshiyuki AONO
Abstract: A drive device includes a first bearing lubricated by a fluid and a second bearing lubricated by a lubricant having a higher electrical conductivity than the fluid. The first bearing rotatably supports a shaft extending in the axial direction along the rotation axis. A housing of the drive device has a first bearing holder that holds the first bearing. The second bearing is arranged between the shaft and the housing and rotatably supports the shaft. The second bearing is arranged in a space isolated from the first bearing holder.
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公开(公告)号：US20220337134A1
公开(公告)日：2022-10-20
申请号：US17720458
申请日：2022-04-14
Applicant: Nidec Corporation
Inventor： Daisuke OGASAWARA , Kazuyuki YAMAMOTO , Hiroki YOKOZAWA , Keigo NAKAMURA
Abstract: A drive motor module includes a motor, an inverter electrically connected to the motor, a housing including a motor housing that houses the motor and an inverter housing that houses the inverter, in which the housing includes a wall portion including a first side and a second side opposing each other and directed outside of the housing, N (N is an integer of 2 or more) high rigidity portions provided with a distance therebetween along the first side and having higher rigidity than the wall portion, and a first rib protruding from the wall portion and extending obliquely at a positive angle from first to (N−1)-th high rigidity portions toward the second side when the N high rigidity portions provided along the first side are defined as the first to N-th high rigidity portions in order.
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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：US20190296601A1
公开(公告)日：2019-09-26
申请号：US16316634
申请日：2017-08-25
Applicant: Nidec Corporation
Inventor： Yuhei YAMAGUCHI , Ryusuke SATO , Hisashi FUJIHARA , Keigo NAKAMURA
Abstract: A motor includes a rotor including a shaft centered on a vertically extending center axis, a stator radially opposite to the rotor and including coils, a bearing supporting the shaft, and a bus bar unit on an upper side in an axial direction of the stator. The bus bar unit includes bus bars including a terminal portion connected to a lead wire drawn out from the coil and a bus bar holder holding the bus bars. The terminal portion includes a slit which extends axially downward and into which the lead wire is fitted. The width of the slit is narrower than the diameter of the lead wire.
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Patent Agency Ranking
公开(公告)号：US20220037967A1
公开(公告)日：2022-02-03
申请号：US17278650
申请日：2019-09-26
Applicant: NIDEC CORPORATION
Inventor： Yuhei YAMAGUCHI , Takayuki MAKINO , Keigo NAKAMURA , Hisashi FUJIHARA
Abstract: A motor includes a rotor configured to rotate about a central axis extending in an up-down direction, a stator located radially outside the rotor, a bracket located above the stator, a circuit board held by the bracket and disposed along a plane perpendicular to an axial direction, and a bus bar held by the bracket and connected to the circuit board at a terminal connection portion. The bracket includes a board support portion supporting the circuit board from below, and a wall portion protruding upward to be higher than the board support portion and surrounding the circuit board. The wall portion has a cutout portion extending downward from an upper end of the wall portion.
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公开(公告)号：US20210050760A1
公开(公告)日：2021-02-18
申请号：US17088642
申请日：2020-11-04
Applicant: Nidec Corporation
Inventor： Yuhei YAMAGUCHI , Ryusuke SATO , Hisashi FUJIHARA , Keigo NAKAMURA
Abstract: A motor includes a rotor including a shaft centered on a vertically extending center axis, a stator radially opposite to the rotor and including coils, a bearing supporting the shaft, and a bus bar assembly on an upper side in an axial direction of the stator. The bus bar assembly includes bus bars including a terminal portion connected to a lead wire drawn out from the coil and a bus bar holder holding the bus bars. The terminal portion includes a slit which extends axially downward and into which the lead wire is fitted. The width of the slit is narrower than the diameter of the lead wire.
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公开(公告)号：US20230155448A1
公开(公告)日：2023-05-18
申请号：US17798081
申请日：2020-09-14
Applicant: NIDEC CORPORATION
Inventor： Daisuke OGASAWARA , Jun MURAKAMI , Kazuyuki YAMAMOTO , Mizuki NIHIRA , Keigo NAKAMURA
Abstract: An inverter device capable of suppressing generation of vibration and a puddle in a top wall of an inverter case is provided. The inverter device includes an inverter and the inverter case that accommodates the inverter inside the inverter case. The inverter case has a top wall covering the inverter from above. The top wall has a first inclined surface descending from a top part on the upper surface of the top wall toward a first end part of the top wall, and a plurality of first rod-shaped ribs extending from the top part toward the first end part. The first rod-shaped rib has a site in which a protrusion height from the inclined surface increases toward the first end part.
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公开(公告)号：US20220376588A1
公开(公告)日：2022-11-24
申请号：US17770988
申请日：2020-09-17
Applicant: NIDEC CORPORATION
Inventor： Keigo NAKAMURA , Hibiki TAKADA , Kazunori TATEGATA
Abstract: A drive device includes a motor having a motor shaft that rotates, a motor housing unit that houses the motor, a gear unit that transmits rotation of the motor shaft to an intermediate shaft, and an inverter housing unit that houses the inverter, wherein the inverter housing unit is disposed above the intermediate shaft, a lower wall portion of the inverter housing unit faces outside air, and the inverter housing unit has a vent that allows an inside of the inverter housing unit and an outside below the inverter housing unit to communication with each other.
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公开(公告)号：US20220294317A1
公开(公告)日：2022-09-15
申请号：US17692176
申请日：2022-03-11
Applicant: NIDEC CORPORATION
Inventor： Keigo NAKAMURA , Keisuke FUKUNAGA , Shohei FUJIMOTO
Abstract: A partition wall of a drive device has a first partition wall and a second partition wall. The first partition wall extends in a direction intersecting with an axial direction and covers one end portion of a motor housing in the axial direction. The second partition wall extends in a direction intersecting with the axial direction and is disposed on one side in the first direction perpendicular to the axial direction with respect to the first partition wall, and covers the other end portion of the gear housing in the axial direction together with the first partition wall. The second partition wall is disposed on one side in the axial direction with respect to the first partition wall.
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