公开(公告)号：US09806566B2

公开(公告)日：2017-10-31

申请号：US13972914

申请日：2013-08-22

Applicant: ASMO CO., LTD.

Inventor： Yoshinobu Nagao ,  Satoru Suzuki ,  Takashi Nagaya ,  Yoshihiro Adachi ,  Yukihide Ishino ,  Yoshitsugu Nakagawa ,  Masaru Irie ,  Toshihiro Matsuura

IPC: H02K3/34 ,  H02K5/04 ,  H02K1/18 ,  H02K1/14 ,  H02K3/46 ,  H02K3/52 ,  H02K15/02

CPC classification number: H02K1/148 ,  H02K1/185 ,  H02K1/278 ,  H02K3/345 ,  H02K3/52 ,  H02K3/522 ,  H02K5/04 ,  H02K15/022 ,  H02K15/14 ,  Y10T29/49009

Abstract: A brushless motor comprising: a rotor; a stator core disposed at a radial direction outside of the rotor, and a stator case. The stator core includes an outer ring shaped section, teeth sections projecting out from the outer ring shaped section toward a radial direction inside, and an inner ring shaped section extending from end portions of the teeth sections. Protruding portions are formed at the outer ring shaped section so as to project toward a radial direction outside and so as to be disposed at even intervals around a circumferential direction of the outer ring shaped section. The stator case is integrated together with the stator core by a plurality of plastic deformation portions formed at an outer peripheral portion of the stator case at locations facing towards the protruding portions, and the plastic deformation portions are disposed at even intervals along a circumferential direction of the stator case.