The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2018
Filed:
Dec. 11, 2015
Johnson Electric S.a., Murten, CH;
Qing Bin Luo, Shenzhen, CN;
Chi Wai Lai, Hong Kong, CN;
Wen Ming Wu, Shenzhen, CN;
Zhao Sen Meng, Shenzhen, CN;
Xiao Lin Ren, Shenzhen, CN;
Xian Xue Ao, Shenzhen, CN;
Bei Bei He, Shenzhen, CN;
Hong Jiang Zhao, Shenzhen, CN;
Ying Song Ye, Shenzhen, CN;
JOHNSON ELECTRIC S.A., Murten, CH;
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.