Title:
MOTOR
Document Type and Number:
WIPO Patent Application WO/2023/170903
Kind Code:
A1
Abstract:
In a stator core of the present invention, electromagnetic steel sheets that each have a pair of recesses of differing lengths in the circumferential direction are stacked in the axial direction, and are provided such that the orientations of the electromagnetic steel sheets in the axial direction are reversed. Thus, obtained is a motor in which it is possible to reduce gaps that occur on either end in the axial direction of the stator core and to suppress winding bulging. A motor (1) comprises a columnar rotor (2) in which a magnet (21) is provided, and a stator (3) in which a plurality of stator cores (31) are disposed in a ring shape on the outer circumferential side of the rotor (2), wherein in each stator core (31), electromagnetic steel sheets (34) that each have a pair of recesses (8) of differing lengths in the circumferential direction are stacked in the axial direction and are provided such that the orientations of the electromagnetic steel sheets (34) in the axial direction are reversed, and a coil (32) is wound in the pairs of recesses (8).
Inventors:
KATO KENJI (JP)
Application Number:
PCT/JP2022/010825
Publication Date:
September 14, 2023
Filing Date:
March 11, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02K1/16
Foreign References:
| JP2014222958A | 2014-11-27 | |||
| JP2003032935A | 2003-01-31 | |||
| JPH0443372U | 1992-04-13 | |||
| JP2020025373A | 2020-02-13 | |||
| JPS57180339A | 1982-11-06 | |||
| JP2002325382A | 2002-11-08 | |||
| JP2005237051A | 2005-09-02 |
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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