公开(公告)号：US10355538B2

公开(公告)日：2019-07-16

申请号：US15521034

申请日：2015-10-09

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Kota Kitamura ,  Hidenori Shimizu ,  Atsushi Takeyama ,  Motoharu Muto ,  Hiroyuki Tsubakimoto ,  Koichi Hashimoto

IPC: H02K1/14 ,  H02K1/18 ,  H02K5/04 ,  H02K7/14

Abstract: A brushless motor includes: a stator core having a cylindrical yoke portion and a teeth portion having a shape protruding from an inner circumferential surface of the yoke portion; and a rotor that is disposed inside the stator core, spaced apart from the teeth portion, and uses a center axis of the yoke portion as an axis of rotation. The yoke portion includes, on its outer circumferential surface, a notch portion at a position on the back side of the teeth portion. The notch portion has a circumferential width smaller than a circumferential width of the teeth portion.