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:
Mar. 29, 2016
Filed:
May. 15, 2013
Applicant:
Jtekt Corporation, Osaka-shi, Osaka, JP;
Inventor:
Yoshiyuki Shibata, Toyota, JP;
Assignee:
JTEKT CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 21/14 (2006.01); H02K 21/16 (2006.01);
U.S. Cl.
CPC ...
H02K 1/27 (2013.01); H02K 1/274 (2013.01); H02K 1/276 (2013.01); H02K 1/2706 (2013.01); H02K 1/2746 (2013.01); H02K 1/2766 (2013.01); H02K 1/2773 (2013.01); H02K 21/14 (2013.01); H02K 21/16 (2013.01); H02K 2213/03 (2013.01);
Abstract
A rotor includes: a rotor core fixed to a rotating shaft so as to be rotatable together with the rotating shaft; and a plurality of permanent magnets embedded and fixed in the rotor core. Each permanent magnet is formed of a pair of magnet pieces having a pair of magnetic pole-facing portions radially extending and magnetized so that poles of the same polarity face each other in a circumferential direction. The pair of the magnetic pole-facing portions is formed so that the length of each magnetic pole-facing portion in a magnetization direction is greater in a radially outer portion than in a radially inner portion.