Johnson Electric International Ag

Johnson Electric S.a.

Hai Jun Hua

Yong Li

Yue Li

Jian Zhao

Mao Xiong Jiang

Yong Qing Wang

Yan Fei Liao

Ying Song Ye

A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.

Method of making a magnetic core with tooth having overlapping short and long teeth distal ends

Magnetic core with multiple teeth having four different teeth tips axially overlapping

A permanent magnet electric motor includes a rotor and a stator magnetically coupled to the rotor. The rotor includes a shaft, a rotor core fixed to the shaft and having n teeth, n being an integer, a commutator fixed to the shaft adjacent the rotor core and having m segments, m being an even number less than n. Rotor windings are wound about the teeth and connected to the segments. The stator includes a plurality of permanent magnets surrounding the rotor core and brushes in sliding electrical contact with the commutator.

Permanent magnet electric motor

Growing community of inventors

Shenzhen, China

Hai Jun Hua