Title:
STATOR AND MOTOR
Document Type and Number:
WIPO Patent Application WO/2022/065345
Kind Code:
A1
Abstract:
Provided is, for example, a stator in which a loss occurring in the stator core is reduced while suppressing the increase of the size of a motor. The stator comprises: a stator core having slots provided between a plurality of teeth disposed in the circumferential direction and between adjacent teeth; and coils mounted on the plurality of teeth. The coils include: outside coils disposed at a first distance from the center of the stator core; and inside coils disposed at a second distance shorter than the first distance from the center of the stator core. The slots include first slots into which the outside coils are disposed and second slots into which the inside coils are disposed. The depth of the first slots is deeper than the depth of the second slots. Coil sets are formed by the inside coils and the outside coils disposed so as to overlap parts of the inside coils. In the coil sets, the phases of the inside coils and the phases of the outside coils are different from each other. The coil sets include first coil sets, second coil sets, and third coil sets. In the first coil sets, the second coil sets, and the third coil sets, the combinations of the phases of the inside coils and the phases of the outside coils are different from each other.
Inventors:
HIJIKATA HIROKI (JP)
WATANABE NATSUKI (JP)
WATANABE NATSUKI (JP)
Application Number:
PCT/JP2021/034725
Publication Date:
March 31, 2022
Filing Date:
September 22, 2021
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
H02K3/04; H02K1/16; H02K3/28
Domestic Patent References:
| WO2014034712A1 | 2014-03-06 |
Foreign References:
| JPH09261928A | 1997-10-03 | |||
| JP2012055137A | 2012-03-15 | |||
| JP2002247816A | 2002-08-30 | |||
| JPS54140107A | 1979-10-31 | |||
| JPS5537562U | 1980-03-11 | |||
| JP2001061248A | 2001-03-06 | |||
| JP2003244895A | 2003-08-29 | |||
| CN107332412A | 2017-11-07 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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