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. 23, 2018
Filed:
Aug. 21, 2014
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventor:
Naohiro Oketani, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 1/02 (2006.01); H02K 1/22 (2006.01);
U.S. Cl.
CPC ...
H02K 1/2706 (2013.01); H02K 1/02 (2013.01); H02K 1/27 (2013.01); H02K 1/276 (2013.01); H02K 1/22 (2013.01); H02K 2201/06 (2013.01);
Abstract
A permanent-magnet-embedded electric motor includes a stator core; a rotor core disposed on an inner diameter side of the stator core and including a plurality of magnet insertion holes corresponding to the number of magnetic poles; and a plurality of permanent magnets arrayed in a rotating direction in the magnet insertion holes. Gaps between two permanent magnets adjacent to each other among the permanent magnets disposed in the magnet insertion holes are formed such that the gaps on the radially outer side are larger than the gaps on the radially inner side.