Title:
ELECTRIC MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/019074
Kind Code:
A1
Abstract:
This electric motor comprises a rotor having an iron core to which a rotary shaft extending axially is fixed, and a stator disposed to face the rotor, wherein: the stator has a plurality of teeth extending toward the rotor and slots located between adjacent teeth among the plurality of teeth; the iron core has a plurality of magnet insertion holes and a plurality of permanent magnets arranged in the plurality of magnet insertion holes; the plurality of permanent magnets are rare earth magnets; the outermost shape of the iron core corresponding to a magnetic pole of each of the plurality of permanent magnets includes a plurality of circular arcs having different radii; the number of poles of the rotor is 10 or more; and the residual magnetic flux density of the permanent magnet is 1.3 T or more.
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Inventors:
AMAYA TAKANORI
NANBU YASUO
NANBU YASUO
Application Number:
PCT/JP2021/024801
Publication Date:
January 27, 2022
Filing Date:
June 30, 2021
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02K5/16; H02K1/22; H02K1/27
Domestic Patent References:
| WO2013054439A1 | 2013-04-18 |
Foreign References:
| JP2015223079A | 2015-12-10 | |||
| JP5186899B2 | 2013-04-24 |
Other References:
See also references of EP 4187759A4
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
Download PDF:
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