Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Yoshiyuki Shibata0
Date of Patent
March 29, 2016
0Patent Application Number
138947680
Date Filed
May 15, 2013
0Patent Citations Received
Patent Primary Examiner
Patent 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.
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