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:
Sep. 12, 2017
Filed:
Jun. 30, 2015
Applicant:
Johnson Electric S.a., Murten, CH;
Inventors:
Yue Li, Hong Kong, CN;
Jie Chai, Shenzhen, CN;
Jing Ning Ta, Hong Kong, CN;
Hong Yu Ding, Shenzhen, CN;
Tao Zhang, Shenzhen, CN;
Chui You Zhou, Shenzhen, CN;
Assignee:
JOHNSON ELECTRIC S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 7/116 (2006.01); B62M 6/65 (2010.01); H02K 7/14 (2006.01); B62M 6/60 (2010.01); H02K 16/00 (2006.01);
U.S. Cl.
CPC ...
H02K 7/116 (2013.01); B62M 6/60 (2013.01); B62M 6/65 (2013.01); H02K 7/14 (2013.01); H02K 16/00 (2013.01); Y02T 10/641 (2013.01);
Abstract
A drive apparatus for an electric bike includes a hollow housing body, an internal ring gear fixed to the housing body, and a main shaft. At least two motor units are mounted in the housing body. Each motor unit includes a support bracket and a number of motors mounted on the support bracket. Each motor drives the internal gear through a transmission mechanism to rotate the housing body about the main shaft. The motors share one controller. Peaks of the motor cogging torque can be staggered.