Patent ID: 8796900
Filing Date: 2014-08-05
Classification: H02K

Abstract:
1. An electric motor comprising: a stator having a number of permanent magnet stator poles; brush gear with at least two brushes; and a rotor comprising a shaft, a rotor bracket fixed to the shaft, a ring shaped rotor core fixed to the rotor bracket, a commutator fixed to the shaft and arranged inside the rotor core, and rotor windings wound on the rotor core and electrically connected to the commutator, the commutator comprising an electrically insulating body, a plurality of segments spaced on the body, and a plurality of terminals respectively electrically connected to the segments, each terminal having a connecting portion for engaging a lead wire of the rotor windings, wherein a radially outer surface of the rotor bracket is press-fitted to a radially inner surface of the rotor core.