Johnson Electric International Ag

Pingman Zhang

Sijun Zhao

Xionghui Liu

He Chi

Cong Lv

Lang Dai

Zhiyu Chen

Luyan Bi

Jingxin Shi

Zhijun Li

Dawei Zhou

Baoqiang Cheng

Seungpun Ho

Yunchang Yu

Feifei Huang

Guiqing Liao

A rotor of an electric motor includes a rotating shaft, a rotor core and a commutator fixed to the rotating shaft, and a first sleeve, a second sleeve and a third sleeve arranged around the rotating shaft. The first sleeve is located on a side of the rotor core away from the commutator and abuts against the rotor core, the second sleeve is located between the rotor core and the commutator, and the third sleeve is located on a side of the commutator away from the rotor core.

Rotor and motor having the same

A brush used to contact with a commutator, includes a brush body which includes two opposite axial end faces and a protruding portion projecting from the brush body toward the commutator. The protruding portion includes a first surface, a second surface and at least two teeth. The first surface and the second surface are respectively adjacent to the two axial end faces. Angles formed between the first surface and the second surface and corresponding adjacent axial end faces are obtuse. The teeth is located between the first surface and the second surface, and extends generally along a circumferential direction of the commutator. The ratio of a total width of the at least two teeth in an axial direction of the brush to an axial height of the brush body is in the range of 0.25-0.75. An electric motor including the brush is also provided.

Electric motor and brush thereof

Growing community of inventors

Shenzhen, China

Pingman Zhang