公开(公告)号：US11056958B2

公开(公告)日：2021-07-06

申请号：US16359362

申请日：2019-03-20

申请人： Johnson Electric International AG

发明人： Jingxin Shi ,  Sijun Zhao ,  Luyan Bi ,  Pingman Zhang ,  Xionghui Liu ,  Lang Dai ,  Cong Lv ,  Feifei Huang ,  He Chi ,  Baoqiang Cheng ,  Seungpun Ho ,  Dawei Zhou ,  Zhijun Li ,  Zhiyu Chen

IPC分类号： H02K13/00 ,  H02K1/28 ,  H02K5/14 ,  H02K23/22 ,  H02K7/00

摘要： 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.