Patent ID: 9033117
Filing Date: 2015-05-19
Classification: B60T,H02K

Abstract:
1. A motor for actuating brake members of an electric parking system, comprising a stator and a rotor rotatably mounted to the stator; the rotor comprising a shaft, a commutator and a rotor core fixed to the shaft, and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator; wherein the rotor windings comprises a plurality of winding units, each of the winding units comprising at least two coils wound about the same teeth adjacent one another and connected in parallel between a first segment and a second segment of the commutator, and in each winding unit, each coil has a first end and a second end, the first ends of the at least two coils are mechanically connected to the first segment and the second ends of the at least two coils are mechanically connected to the second segment, such that there is one winding unit connected between the first segment and the second segment, wherein at least two coils of each winding unit comprises a first coil arranged in a radially inner layer and a second coil arranged in a radially outer layer; and each two adjacent winding units both wound on a common tooth such that the common tooth is shared by the two adjacent winding units, and the first coil of each winding unit is located closer to a rotating center of the rotor core than the second coil of an adjacent winding unit.