Patent ID: 8970078
Filing Date: 2015-03-03
Classification: H02K

Abstract:
1. An electric motor comprising: a stator comprising a housing and a plurality of magnets attached to an inner surface of the housing, the housing having an open end thereof; a rotor comprising a shaft, an armature, a commutator fixed to the shaft, and a ring magnet mounted on the shaft, the rotor received in the housing with an outer periphery of the armature facing the magnets of the stator; an end cap covering the open end of the housing of the stator, the end cap comprising: a connector integrally formed with the cover case and comprising a plurality of terminals respectively electrically connected with the printed circuit board and the brushes; a Hall sensor mounted on the printed circuit board and combined with the ring magnet being used to detect a rotational speed of the rotor; a further printed circuit board arranged perpendicular to the printed circuit board; and a grounding capacitor mounted on the further printed circuit board and connecting one of the terminals directly to the housing.