Title:
ROTOR, ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATOR/AIR-CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2017/163423
Kind Code:
A1
Abstract:
The rotor (3) is equipped with: a rotor core (4); and magnets (5) inserted in magnet insertion holes (6) formed on the rotor core (4). The magnet insertion holes (6) extend parallel to a rotational axis (C) of the rotor core (4), and are formed into an ark-like shape with the center part curved toward the rotational axis (C) when viewed along the rotational axis (C). The ark-like shape of the magnet insertion hole (6) is formed so as to have a first arc surface (61) and a second arc surface (62) having the same center as the first arc surface (61) and a larger diameter than the first arc surface (61). The second arc surface (62) has two protrusion parts (7) protruding toward the first arc surface (61). The magnet (5) is inserted between the two protrusion parts (7) and placed in contact with the two protrusion parts (7).
Inventors:
TSUCHIDA KAZUCHIKA (JP)
IIDA TOSHIMITSU (JP)
IIDA TOSHIMITSU (JP)
Application Number:
PCT/JP2016/059740
Publication Date:
September 28, 2017
Filing Date:
March 25, 2016
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/27
Domestic Patent References:
| WO2016006103A1 | 2016-01-14 |
Foreign References:
| JP2014007928A | 2014-01-16 | |||
| JP2014193065A | 2014-10-06 | |||
| JP2013132163A | 2013-07-04 | |||
| US20070138892A1 | 2007-06-21 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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