公开(公告)号：US09935414B2

公开(公告)日：2018-04-03

申请号：US14966606

申请日：2015-12-11

Applicant: JOHNSON ELECTRIC S.A.

Inventor： Qing Bin Luo ,  Chi Wai Lai ,  Wen Ming Wu ,  Zhao Sen Meng ,  Xiao Lin Ren ,  Xian Xue Ao ,  Bei Bei He ,  Hong Jiang Zhao ,  Ying Song Ye

IPC: H02K13/04 ,  H01R39/04 ,  H02K11/028 ,  H02K7/00 ,  H02K11/40

CPC classification number: H01R39/04 ,  H02K7/003 ,  H02K11/028 ,  H02K11/40

Abstract: A commutator has a conductive layer, a segment layer and an insulating layer separating the conductive layer and the segment layer. The segment layer includes multiple commutator segments. A mounting hole is defined along an axis of the commutator passing through the conductive layer. The three-layer structure of the commutator forms a capacitor having an increased confronting area and reduced inter-plate distance. The capacitor thus has a greater capacitance and hence greater EMI absorbing capability, making it possible to reduce EMI emissions without additional EMI reduction components outside the commutator. A rotor and a motor employing the commutator are also disclosed.

公开(公告)号：US10483829B2

公开(公告)日：2019-11-19

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 ,  H02K5/14 ,  H02K5/22 ,  H02K13/10 ,  H02K11/215 ,  H02K11/25

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.