US 11,916,454 B2
Stator and motor
Tatsuro Kawamoto, Kyoto (JP); Yuhei Yamaguchi, Kyoto (JP); and Yoshiaki Yamashita, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by Nidec Corporation, Kyoto (JP)
Filed on Feb. 4, 2022, as Appl. No. 17/592,538.
Claims priority of application No. 2021-025649 (JP), filed on Feb. 19, 2021.
Prior Publication US 2022/0271595 A1, Aug. 25, 2022
Int. Cl. H02K 3/34 (2006.01); H02K 3/50 (2006.01); H02K 9/19 (2006.01); H02K 1/16 (2006.01)
CPC H02K 3/345 (2013.01) [H02K 3/34 (2013.01); H02K 3/50 (2013.01); H02K 1/16 (2013.01); H02K 9/19 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A stator comprising:
a stator core that includes a core back portion having an annular shape and with a central axis as a center, and tooth portions extending from the core back portion to an inside in a radial direction and arranged in a circumferential direction;
insulators that are attached to the tooth portions from the inside in the radial direction;
a coil that is wound around the insulator; and
a cover that supports an inner surface of the insulator opposing the inside in the radial direction from the inside in the radial direction; wherein
the cover includes an opposing surface opposing an outside in a radial direction and opposing the inner surface of the insulator; and
protrusions that are arranged along the circumferential direction, protrude to the outside in the radial direction, and are in contact with the inner surface, are provided on the opposing surface at distal ends.