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Title:
EMBEDDED MAGNET ROTOR
Document Type and Number:
WIPO Patent Application WO/2013/105236
Kind Code:
A1
Abstract:
An embedded magnet rotor is provided with a rotor iron core (2) formed into a cylindrical shape by laminating steel plates, and comprising a plurality of magnet embedding holes (2b) annularly disposed at predetermined intervals at the outer edge, magnetic poles (2c) formed at the outer peripheral side of the magnet embedding holes (2b), and ribs (2d) formed between the magnet embedding holes (2b) adjacent to each other, and connected to bridges (2e) on both sides of the magnetic poles (2c), and protrusions (2f) each protrude outward from a connection between the bridge (2e) and the rib (2d) and having a flat leading end. The width in the circumferential direction of the protrusion (2f) is made larger than the width in the circumferential direction of the rib (2d), and a radius from a rotation center (O) to the leading end of the protrusion (2f) is smaller than a radius from the rotation center to the outer periphery of a central portion of the magnetic pole (2c).

Inventors:
NISHIJIMA DAISUKE (JP)
HASEGAWA HARUYUKI (JP)
KATAE TORU (JP)
Application Number:
PCT/JP2012/050402
Publication Date:
July 18, 2013
Filing Date:
January 11, 2012
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
NISHIJIMA DAISUKE (JP)
HASEGAWA HARUYUKI (JP)
KATAE TORU (JP)
International Classes:
H02K1/27
Domestic Patent References:
WO2007125753A12007-11-08
Foreign References:
JP2011062059A2011-03-24
JP2009118687A2009-05-28
JP2011114927A2011-06-09
JP2005354798A2005-12-22
JP2009278860A2009-11-26
JP2007181346A2007-07-12
JP2004072845A2004-03-04
JP2002165394A2002-06-07
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
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Claims:



 
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