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Title:
PERMANENT-MAGNET-EMBEDDED ELECTRIC MOTOR AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2014/156090
Kind Code:
A1
Abstract:
This permanent magnet-embedded motor is composed of a stator and a rotor. The stator has a coil wound around a stator iron core. The rotor is disposed inside an inner circumferential surface of the stator iron core through a gap so as to be capable of rotating. The rotor is provided with a rotor iron core and a permanent magnet. The rotor iron core is obtained by layering steel plates having a plurality of magnet-embedding holes. The permanent magnet is housed and held in each of the magnet-implanting holes. The plate thickness between a bridge section and a thin-walled linking section is less than the thickness of the steel plate. The bridge section is composed of end sections of the magnet-implanting holes and an outer circumference of the rotor iron core. The thin linking section connects the bridge sections formed between adjacent magnet-implanting holes.

Inventors:
KAWAMURA KIYOMI
KAWASAKI HIROAKI
YOSHIKAWA YUICHI
KATO YASUSHI
KADO HARUHIKO
ASO NORITAKA
Application Number:
PCT/JP2014/001619
Publication Date:
October 02, 2014
Filing Date:
March 20, 2014
Export Citation:
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Assignee:
PANASONIC CORP (JP)
International Classes:
H02K1/22; H02K1/27
Foreign References:
JP2011114927A2011-06-09
JP2005130604A2005-05-19
JPH07336918A1995-12-22
JP2007110880A2007-04-26
JPH09289745A1997-11-04
Attorney, Agent or Firm:
TOKUDA, Yoshiaki et al. (JP)
Yoshiaki Tokuda (JP)
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