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:
Oct. 06, 2015
Filed:
Mar. 05, 2013
Johnson Electric S.a., Murten, CH;
James Ching Sik Lau, Hong Kong, CN;
Xiao Jun Yang, Shenzhen, CN;
Cheong Wing Yuen, Hong Kong, CN;
Yu Ying Li, Shenzhen, CN;
Yang Qing Hou, Shenzhen, CN;
JOHNSON ELECTRIC S.A., Murten, CH;
Abstract
An electric motor has a stator, a shaft and a rotor. The stator has an annular yoke portion; a plurality of stator teeth inwardly extending from the yoke portion; stator windings wound on the stator teeth; and a molded member made of heat conductive plastic material. The molded member has a plurality of fins arranged on an outer wall of the yoke portion, a covering portion disposed in the spaces between adjacent stator teeth, and two connecting portions respectively located at axially outer end faces of the yoke portion and connected to the covering portion and the fins. The covering portion covers an inner wall of the yoke portion and the stator windings, and connects to the fins via the connecting portions. Heat generated by the stator windings is transmitted to the fins via the covering portion and the connecting portions, where it is dissipated.