公开(公告)号：US20160043618A1

公开(公告)日：2016-02-11

申请号：US14820010

申请日：2015-08-06

Applicant: Johnson Electric S.A.

Inventor： Chi Wai LAI ,  Qing Bin LUO ,  Gong Wu XU ,  Xin Peng WEI ,  Xiao Lin REN ,  Gui Hong TIAN ,  Hong Wei ZHANG ,  Xia HAN

IPC: H02K11/02 ,  H02K5/14

CPC classification number: H02K11/026 ,  H02K5/148 ,  H02K23/66

Abstract: An end cap assembly for an electric motor has a brush assembly, a circuit board, an inductor and a grounded metal element. The brush assembly has a plurality of brushes. The circuit board is fixed relative to the brush assembly. The inductor is electrically connected to the circuit board. The grounded metal element is positioned between the brushes and the inductor to absorb high frequency electromagnetic radiation transmitted from the brushes to the inductor.

Abstract translation: 用于电动机的端盖组件具有电刷组件，电路板，电感器和接地金属元件。 刷组件具有多个刷子。 电路板相对于电刷组件固定。 电感器电连接到电路板。 接地的金属元件位于电刷和电感器之间，以吸收从电刷传递到电感器的高频电磁辐射。

公开(公告)号：US20150318766A1

公开(公告)日：2015-11-05

申请号：US14701178

申请日：2015-04-30

Applicant: Johnson Electric S.A.

Inventor： Qing Bin LUO ,  Chi Wai LAI ,  Xiao Lin REN ,  Gui Hong TIAN ,  Xin Peng WEI

IPC: H02K11/02 ,  H03H7/01

CPC classification number: H02K11/022 ,  H01F5/04 ,  H01F17/02 ,  H02K11/026 ,  H03H7/01

Abstract: A motor includes motor terminals for connecting with an external power supply and an internal circuit connected to the motor terminals. The motor further includes a RF filter. The RF filter includes a conductive wire coiled in either a helical manner or a spiral manner. Terminals of the conductive wire at opposite axial ends of the coil are connected to a corresponding one of the motor terminals and the internal circuit, respectively. The intensity of the electromagnetic waves radiated from most parts of the conductive wire of the RF filter is attenuated by reflected electromagnetic waves from other parts of the conductive wire. Therefore, the intensity of the electromagnetic wave radiated from the motor is greatly reduced. A RF filter for the motor is also provided.

Abstract translation: 电动机包括用于与外部电源连接的电动机端子和连接到电动机端子的内部电路。 电动机还包括RF滤波器。 RF滤波器包括以螺旋方式或螺旋方式盘绕的导线。 在线圈的相对的轴向端部处的导线的端子分别连接到电动机端子和内部电路中的相应的一个。 由RF滤波器的导线的大部分辐射的电磁波的强度由来自导线的其它部分的反射电磁波衰减。 因此，从电机辐射的电磁波的强度大大降低。 还提供了用于电机的RF滤波器。

公开(公告)号：US20170257009A1

公开(公告)日：2017-09-07

申请号：US15447750

申请日：2017-03-02

Applicant: Johnson Electric S.A.

Inventor： Qing Bin LUO ,  Chi Wai LAI ,  Xin Peng WEI ,  Gui Hong TIAN ,  Bo HU ,  Xiao Lin REN ,  Wen Ming WU

IPC: H02K11/02 ,  H02K13/10 ,  H02K11/215 ,  H02K11/25 ,  H02K5/14 ,  H02K5/22

CPC classification number: H02K11/02 ,  H02K5/148 ,  H02K5/225 ,  H02K11/026 ,  H02K11/215 ,  H02K11/25 ,  H02K13/10

Abstract: A brush assembly includes a circuit board, at least two brushes, power connecting terminals for connecting with an external power supply, and a power supply branch circuit connected in series between a corresponding one of the power connecting terminals and a corresponding one of the brushes. The brush assembly further comprises an EMI suppressor connected between the power supply branch circuit and ground. The EMI suppressor is an axial capacitor formed by a conductor core, a cover, and a filling medium. The cover is attached around the conductor core, and the filling medium is filled between the conductor core and the cover. A motor utilizing the brush assembly is also provided.

公开(公告)号：US20150357884A1

公开(公告)日：2015-12-10

申请号：US14734275

申请日：2015-06-09

Applicant: Johnson Electric S.A.

Inventor： Qing Bin LUO ,  James Ching Sik LAU ,  Wen Ming WU ,  Gui Hong TIAN ,  Xin Peng WEI ,  Wing Cheung LAM ,  Qiang XU ,  Zhong Hai CHEN

IPC: H02K11/00 ,  H02K11/02 ,  H02K7/116 ,  H02K5/04

CPC classification number: H02K11/01 ,  H02K5/04 ,  H02K7/003 ,  H02K7/1166 ,  H02K11/0005 ,  H02K11/022 ,  H02K11/026 ,  H02K11/40

Abstract: An electric motor includes a stator and a rotor. The stator includes a motor housing with an open end and an end cover mounted to the open end. The rotor includes a rotor shaft that extends through the end cover. The end cover includes a bearing that supports the rotor shaft. The rotor shaft and motor housing are made of an electrically conductive material and are electrically connected with each other. The motor housing, end cover, bearing and rotor shaft cooperatively form an electromagnetic shield suppressing electromagnetic interference generated by the motor. Optionally, the rotor shaft drives a coaxial worm shaft of a gearbox by an insulating member, which further suppresses electromagnetic interference.

Abstract translation: 电动机包括定子和转子。 定子包括具有开口端的马达壳体和安装到开口端的端盖。 转子包括延伸穿过端盖的转子轴。 端盖包括支撑转子轴的轴承。 转子轴和马达壳体由导电材料制成并彼此电连接。 电动机壳体，端盖，轴承和转子轴协同地形成电磁屏蔽物，其抑制由电动机产生的电磁干扰。 可选地，转子轴通过绝缘构件驱动齿轮箱的同轴蜗杆轴，这进一步抑制电磁干扰。