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1. (WO2018180038) MOTOR AND ELECTRIC POWER STEERING DEVICE

Pub. No.:    WO/2018/180038    International Application No.:    PCT/JP2018/006223
Publication Date: Fri Oct 05 01:59:59 CEST 2018 International Filing Date: Thu Feb 22 00:59:59 CET 2018
IPC: H02K 1/14
H02K 1/16
H02K 1/22
H02K 21/12
Applicants: NIDEC CORPORATION
日本電産株式会社
Inventors: YAMASHITA, Yoshiaki
山下 佳明
KANEKO, Takuya
金子 拓也
ICHIEN, Akira
一円 明
KINJO, Hideyuki
金城 秀幸
Title: MOTOR AND ELECTRIC POWER STEERING DEVICE
Abstract:
This motor (1) is provided with a rotor and a stator (100). The stator (100) includes an annular core back (104), a plurality of teeth (105) extending radially inward from the core back (104), and a plurality of umbrellas (106) which face the rotor, are individually connected to the radially inner ends of the teeth (105), and each extend to both circumferential sides thereof. Gaps (108) having a specific width are provided between adjacent umbrellas (106), and the circumferential and radial positions of the gaps coincide when viewed from axially above. The umbrella (106) extending from each tooth has a shape which is asymmetric about a radial line (R) passing through the circumferential center of the umbrella (106) and which is point-symmetric about the intersection (P) between the axial center and the circumferential center of the umbrella (106).