Johnson Electric International Ag

Xian Ming Wu

Rui Feng Qin

Yong Bin Li

Di Wang

Ji Yu Liang

Yao Zhao

Sheng Han

Xiao Wu Xie

Guo Dong Ren

An electric motor includes a stator having multiple magnetic poles and a rotor rotatably mounted to the stator. The rotor includes a shaft, a commutator and a rotor core fixed to the shaft; and windings wound on the rotor core and electrically connected to the commutator. The rotor core is formed by stacking a plurality of laminations. Each lamination includes an inner ring having a hole for fixing the shaft; an outer ring radially spaced from the inner ring; multiple teeth extending outwardly from the outer ring, and multiple ribs connecting the inner ring to the outer ring. Each rib has a width w measured in a circumferential direction of the lamination. The number of ribs is n. The width w and the number n satisfy the formula: 0.75&#x2264;n&#xd7;w&#x2264;64, where the width w is measured in millimeters.

Electric motor

Growing community of inventors

Shenzhen, China

Xian Ming Wu