公开(公告)号：US20160285340A1

公开(公告)日：2016-09-29

申请号：US15076932

申请日：2016-03-22

Applicant: Nidec Corporation

Inventor： Takahiro HIWA ,  Shohei OSUGA

IPC: H02K5/24 ,  H02K5/22 ,  F04D29/32 ,  F04D25/06 ,  F04D29/053 ,  H02K5/14 ,  H02K11/00

CPC classification number: H02K5/148 ,  F04D25/0613 ,  F04D29/083 ,  H02K5/225 ,  H02K11/026

Abstract: A motor includes a rotor, a brush card assembly arranged to supply an electric current to the rotor, a housing, a permanent magnet, and a bearing. The rotor includes a core fixed to a shaft, a coil arranged to excite the core and a commutator connected to the coil. The coil is wound around the core in a concentrated winding method. The brush card assembly includes at least one pair of brushes having different polarities, the brushes disposed along a circumferential direction and connected to each other via the commutator and the coil, a X capacitor parallel-connected to the brushes, Y capacitors parallel-connected to the brushes and a brush card arranged to hold the brushes, the X capacitor and the Y capacitors. The brush card includes a ground portion. The X capacitor is positioned between the brushes in the circumferential direction. The Y capacitors are connected to the ground portion.

Abstract translation: 电动机包括转子，布置成向转子供应电流的电刷卡组件，壳体，永磁体和轴承。 转子包括固定在轴上的铁芯，用于激励铁芯的线圈和连接到线圈的换向器。 线圈以集中绕线方式缠绕在芯上。 刷卡组件包括至少一对具有不同极性的刷子，电刷沿圆周方向设置并经由换向器和线圈相互连接，与电刷平行连接的X电容器并联连接到 刷子和刷卡被布置成保持电刷，X电容器和Y电容器。 刷卡包括接地部分。 X电容器沿圆周方向位于电刷之间。 Y电容器连接到接地部分。

公开(公告)号：US20230069613A1

公开(公告)日：2023-03-02

申请号：US17893182

申请日：2022-08-23

Applicant: NIDEC CORPORATION

Inventor： Shohei OSUGA ,  Yoshiyuki AONO

IPC: F16H57/04 ,  H02K5/20 ,  H02K7/00 ,  H02K7/08 ,  H02K7/116 ,  H02K9/193

Abstract: A drive apparatus includes a motor having a rotor with a hollow motor shaft and a stator, a gear connected to the rotor, a housing including a motor housing accommodating the motor, and a gear housing at one side in an axial direction of the motor housing and accommodating the gear, and a passage. The gear includes a hollow gear shaft connected to one side in the axial direction of the motor shaft. The passage includes a first portion connecting the inside of the gear housing and the inside of the gear shaft, a second portion at least partially configured by the inside of the gear shaft and the inside of the motor shaft and connected to the first portion, a third portion connected to the second portion on the other side in the axial direction, and a first supply portion connected to the third portion and above the stator.

公开(公告)号：US20210135534A1

公开(公告)日：2021-05-06

申请号：US16486841

申请日：2017-12-27

Applicant: Nidec Corporation

Inventor： Shohei OSUGA ,  Takahiro HIWA ,  Yohei MIYATA

IPC: H02K5/14 ,  H02K5/22 ,  H02K5/20 ,  H02K11/026

Abstract: A motor includes a rotor, a back cover, a housing, and a brush card assembly. The rotor includes a core fixed to a shaft, a coil that magnetizes a core, and a commutator connected to the coil. The back cover includes a back cover bottom surface portion, and a back cover cylindrical portion on an outer periphery of the back cover bottom surface portion to have a cylindrical shape. The brush card assembly includes a brush card bottom surface portion spaced apart from the back cover bottom surface portion in an axial direction through a first gap. The brush card bottom surface holds brushes and includes a nip portion nipped by the back cover and the housing, an outer peripheral wall spaced apart from the back cover cylindrical portion in a radial direction through a second gap, and contact portions contacting the back cover cylindrical portion.