PERMANENT MAGNET EMBEDDED ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATING AND AIR-CONDITIONING DEVICE

Title:

PERMANENT MAGNET EMBEDDED ELECTRIC MOTOR, COMPRESSOR, AND REFRIGERATING AND AIR-CONDITIONING DEVICE

Document Type and Number:

WIPO Patent Application WO/2015/045999

Kind Code:

A1

Abstract:

A permanent magnet embedded electric motor (1) is provided with a stator (3) and a rotor (5). The rotor (5) has a rotor core (11) constituted by laminating a plurality of sheet members. In the rotor core (11), a plurality of magnet insertion holes (21) are formed, into which corresponding permanent magnets (19) are inserted. At least one slit (72) and at least one caulking (76) are formed in the rotor (5) between the outer circumferential surface (25) of the rotor and the radial direction outside insertion hole contour surface (55) of the magnet insertion hole (21). At least a part of the caulking (76) is positioned between a pair of the width extended lines (WE) of the slit (72).

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Inventors:

TSUCHIDA KAZUCHIKA (JP)
NIGO MASAHIRO (JP)
BABA KAZUHIKO (JP)
ISHIKAWA ATSUSHI (JP)
OIKAWA TOMOAKI (JP)

Application Number:

PCT/JP2014/074635

Publication Date:

April 02, 2015

Filing Date:

September 18, 2014

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02K1/22

Foreign References:

JPH11187597A	1999-07-09
JP2001037186A	2001-02-09
JP2006320200A	2006-11-24

Attorney, Agent or Firm:

SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)

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