Title:
MOTOR
Document Type and Number:
Japanese Patent JP2019205271
Kind Code:
A
Abstract:
To provide a motor which can make cogging smaller.SOLUTION: A motor M has a stator 23 formed by fixing a plurality of permanent magnets 22 on the inner peripheral surface of a yoke housing 21, and a rotor 24 rotatably supported inside the permanent magnets 22. A face on the radial inside of the permanent magnets 22 has, in an axial view, a central circular arc part 22a formed at a center part in a circumferential direction and a side circular arc part 22b formed at both sides in the circumferential direction of the central circular arc part 22a, a center of curvature X1 of the central circular arc part 22a is set farther than a shaft center X of the rotor 24, and a center of curvature X2 of the side circular arc part 22b is set farther than the center of curvature X1 of the central circular arc part 22a.SELECTED DRAWING: Figure 5
Inventors:
SUZUKI HIROISA
Application Number:
JP2018098727A
Publication Date:
November 28, 2019
Filing Date:
May 23, 2018
Export Citation:
Assignee:
DENSO CORP
International Classes:
H02K23/04; H02K1/06; H02K1/17; H02K23/30
Domestic Patent References:
| JP2017022935A | 2017-01-26 | |||
| JP2004350499A | 2004-12-09 |
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda