公开(公告)号：US20210167667A1

公开(公告)日：2021-06-03

申请号：US16772807

申请日：2018-12-20

Applicant: NIDEC CORPORATION

Inventor： Yuki ISHIKAWA ,  Takanobu OYAMA ,  Keisuke FUKUNAGA

IPC: H02K9/193 ,  H02K5/20 ,  H02K7/116

Abstract: The motor unit includes: a motor having a motor shaft that rotates around a motor axis extending along a horizontal direction; a gear section connected to the motor shaft on one side of the motor shaft in an axial direction; a housing that houses the motor and the gear section; and an oil contained in the housing. The housing includes a motor housing section that has inside a motor chamber for housing the motor, and a gear housing section that has inside a gear chamber for housing the gear section. The housing is provided with an oil passage along which the oil circulates for cooling the motor. A pump that supplies the oil to the motor is provided in a channel of the oil passage. The pump has a pump motor. A rotation axis of the pump motor is parallel to the motor axis.

公开(公告)号：US20200052543A1

公开(公告)日：2020-02-13

申请号：US16344403

申请日：2017-11-02

Applicant: Nidec Corporation

Inventor： Matthias FISCHER ,  Keisuke FUKUNAGA ,  Thomas KUEBLER ,  Juergen SCHMID

IPC: H02K3/52 ,  H01R25/16

Abstract: A busbar unit for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.

公开(公告)号：US20180233980A1

公开(公告)日：2018-08-16

申请号：US15956088

申请日：2018-04-18

Applicant: Nidec Corporation

Inventor： Keisuke FUKUNAGA

IPC: H02K3/28 ,  H02K11/00 ,  H02K3/02 ,  H02K15/00 ,  H02K3/52

CPC classification number: H02K3/28 ,  H02K3/02 ,  H02K3/522 ,  H02K11/0094 ,  H02K15/0056 ,  H02K2203/09 ,  Y02P80/30

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.

公开(公告)号：US20160319922A1

公开(公告)日：2016-11-03

申请号：US14932430

申请日：2015-11-04

Applicant: NIDEC CORPORATION

Inventor： Keisuke FUKUNAGA

IPC: F16H25/22

CPC classification number: F16H25/2204 ,  F16C19/166 ,  F16C33/723 ,  F16C35/067 ,  F16C35/07 ,  F16C35/073 ,  F16H25/22 ,  F16H35/18

Abstract: A rotary transmitting assembly may include a housing having a bearing surface sustaining a bearing; a hollow shaft coupled to the housing, wherein the hollow shaft has an outer circumferential stepped shaft portion and an inner circumferential stepped shaft portion; a rod member coupled to the housing and having a contacting portion and a protruding part, wherein the contacting portion contacts a part of the hollow shaft and the protruding part abuts the inner circumferential stepped shaft portion. The bearing may include a circular inner support part and a circular outer support part supporting the hollow shaft and the rod member, wherein the circular inner support part abuts the outer circumferential stepped shaft portion and the the circular outer support part abuts the bearing surface of the housing. A stopper member may be fixed to the rod member, wherein the stopper member abuts the circular inner support part.

Abstract translation: 旋转传递组件可以包括具有支撑轴承的轴承表面的壳体; 联接到所述壳体的空心轴，其中所述中空轴具有外周阶梯轴部和内周阶梯轴部; 杆构件，其联接到所述壳体并且具有接触部分和突出部分，其中所述接触部分接触所述中空轴的一部分并且所述突出部分邻接所述内周台阶轴部。 轴承可以包括圆形的内部支撑部分和支撑中空轴和杆构件的圆形外部支撑部分，其中圆形内部支撑部分邻接外圆周阶梯轴部分，并且圆形外部支撑部分邻接 住房。 止动构件可以固定到杆构件，其中止动构件邻接圆形内支撑部。

公开(公告)号：US20230187996A1

公开(公告)日：2023-06-15

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.

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

IPC: H02K11/33 ,  H02K7/00 ,  H02K7/08 ,  H02K7/116 ,  B60L50/51

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.

公开(公告)号：US20220205530A1

公开(公告)日：2022-06-30

申请号：US17603969

申请日：2020-04-09

Applicant: Nidec Corporation

Inventor： Yuki ISHIKAWA ,  Takanobu OYAMA ,  Keisuke FUKUNAGA

IPC: F16H57/04 ,  B60K11/02 ,  B60K1/00 ,  F16H57/037

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.

公开(公告)号：US20220123621A1

公开(公告)日：2022-04-21

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.

公开(公告)号：US20200373820A1

公开(公告)日：2020-11-26

申请号：US16989975

申请日：2020-08-11

Applicant: Nidec Corporation

Inventor： Keisuke FUKUNAGA

IPC: H02K11/40 ,  H02K5/15 ,  H02K5/22 ,  H02K11/33 ,  H02K5/16

Abstract: An electric motor includes a rotor assembly rotatable about a vertical center axis, a stator assembly around the rotor assembly, a housing inside of which the stator assembly is fixed, and a bearing mechanism rotatably supporting the rotor assembly. The housing includes a cylindrical wall portion inside of which the stator assembly is located, a bottom at a bottom vertical end of the cylindrical wall portion and extending radially outward, and a cover plate on one side of the stator assembly opposite to the bottom. The cover plate includes electrically conductive elements and at least one columnar projection protruding away from the stator assembly so that the at least one projection contacts at least one grounding contact of a controller on one side of the cover plate, the controller being electrically connected to a ground potential through the housing.

公开(公告)号：US20200220416A1

公开(公告)日：2020-07-09

申请号：US16820896

申请日：2020-03-17

Applicant: Nidec Corporation

Inventor： Matthias FISCHER ,  Keisuke FUKUNAGA ,  Thomas KUEBLER ,  Juergen SCHMID

IPC: H02K3/52 ,  H01R25/16

Abstract: A busbar assembly for an electric motor may include a busbar holder at least a portion of which is made of an electrically insulating material, and at least one busbar mounted on the busbar holder. The busbar may include a base portion extending along a mounting surface of the busbar holder, at least one coil connection terminal portion to be electrically connected to a coil of the electric motor, and a power source connection terminal portion to be electrically connected to a power source. The power source connection terminal portion may extend from the base portion and at least a portion of the base portion may include a resilient member allowing displacement of the power source connection terminal portion towards the busbar holder.