Title:
ROTOR AND ELECTRIC MOTOR HAVING EMBEDDED PERMANENT MAGNET
Document Type and Number:
WIPO Patent Application WO/2013/150652
Kind Code:
A1
Abstract:
A rotor (50) is provided with a plurality of magnets (2) and an annular rotor core (1) having formed along the circumferential direction a plurality of magnet insertion holes (5) in which the magnets (2) are inserted. Each of the magnet insertion holes (5) is shaped so that a projecting part (A) is provided on an inner wall surface oriented inward in the radial direction of the rotor (50), and each of the magnets (2) is provided with a concave part that mates with the projecting part (A) on being inserted into the magnet insertion hole (5). This configuration makes it possible to provide a high-reliability and high-quality stator (50) in which the magnets (2) are easily secured in place and any vibration noise or cracking due to the magnets (2) moving during start-up or rotation can be suppressed.
Inventors:
TSUCHIDA KAZUCHIKA (JP)
NIGO MASAHIRO (JP)
NIGO MASAHIRO (JP)
Application Number:
PCT/JP2012/059565
Publication Date:
October 10, 2013
Filing Date:
April 06, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
TSUCHIDA KAZUCHIKA (JP)
NIGO MASAHIRO (JP)
TSUCHIDA KAZUCHIKA (JP)
NIGO MASAHIRO (JP)
International Classes:
H02K1/27
Domestic Patent References:
| WO2001043259A1 | 2001-06-14 |
Foreign References:
| JP2005279276A | 2005-10-13 | |||
| JP2011055619A | 2011-03-17 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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