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:
Apr. 03, 2012
Filed:
Jul. 10, 2008
Permanent magnet rotating electrical machine and permanent magnet rotating electrical machine system
Mamoru Kimura, Hitachi, JP;
Daisuke Kori, Hitachinaka, JP;
Hiroyuki Mikami, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Masayasu Fujieda, Hitachi, JP;
Mamoru Kimura, Hitachi, JP;
Daisuke Kori, Hitachinaka, JP;
Hiroyuki Mikami, Hitachinaka, JP;
Seikichi Masuda, Hitachi, JP;
Masayasu Fujieda, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Movement of magnets due to centrifugal force is restricted. In a permanent magnet rotating electrical machinehaving a statorand a rotor coreprovided with a plurality of permanent magnetsinserted in an outer circumferential portion of the rotor, each permanent magnethas inclined surfaces on the outer circumferential side of the rotorand the thinnest portions of the inclined surfaces are adjacent to permanent magnets of the opposite polarity. Further, each magnethas a convex-shaped cross section and is divided into two magnet segments. A magnetic pole bridgeis formed at the boundary of the permanent magnet segments. Thus, movement of the permanent magnet segmentsdue to centrifugal force is firmly restricted, and the peeling off of the rotor coreand the permanent magnet segmentsfrom each other is prevented.