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:
Jun. 27, 2017
Filed:
Sep. 28, 2015
Applicant:
Denso Corporation, Kariya, Aichi-pref., JP;
Inventors:
Assignee:
DENSO CORPORATION, Kariya, Aichi-pref., JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 21/00 (2016.01); H02P 25/22 (2006.01); H02K 3/28 (2006.01); H02P 29/66 (2016.01); B62D 5/04 (2006.01);
U.S. Cl.
CPC ...
H02P 25/22 (2013.01); B62D 5/0403 (2013.01); B62D 5/046 (2013.01); B62D 5/0496 (2013.01); H02K 3/28 (2013.01); H02P 29/66 (2016.02);
Abstract
A brushless motor for an electric power steering device that assists a steering operation includes: a stator having a plurality of winding sets for a plurality of systems respectively; and a rotator having a ferrite magnet. In the motor, a maximum current flowing without any demagnetization at high temperature is large. Hence, the torque of the motor is easily ensured at high temperature. In particular, when a failure occurs in one system, it is easy to ensure the torque of the normal system even at high temperature.