Patent ID: 9614422
Date: 2017-04-04
CPC Classifications: H02K,Y10T

Claim:
1. An electric motor apparatus comprising an electric motor which is driven by electric power supplied thereto, a motive-power transmission mechanism to which motive power is transmitted from the electric motor, and a housing in which the motive-power transmission mechanism and part of the electric motor are accommodated, the electric motor including an armature shaft which is partially accommodated in the housing and rotatable about an axis thereof, a coil installed to the armature shaft, a commutator which is installed to the armature shaft and switches a current flowing in the coil, and a cylindrical yoke which rotatably supports the armature shaft, and a brush holder holding a power supply brush which comes into contact with the commutator and a connector unit which is conductively connected to the brush and to which an external connector is detachably connected, wherein the housing includes: a concave portion having a first opening portion opened in a plane parallel to the axis of the armature shaft; a holding portion formed with a holding hole extending in a direction along the axis; and an accommodation chamber communicating with the holding hole, the connector unit is installed to the concave portion through the first opening portion, and the brush holder is installed to the holding hole through the second opening portion so that the brush and the connector unit are connected to be power-feedable to each other, the connector unit has a shaft hole in which the armature shaft is partially inserted, the brush holder has a shaft hole in which the armature shaft is partially inserted, the shaft hole of the connector unit installed to the concave portion is axially aligned with the shaft hole of the brush holder installed to the holding hole, the armature shaft extends in the accommodation chamber through the shaft hole of the brush holder and the shaft hole of the connector unit, the motive-power transmission mechanism is accommodated in the accommodation chamber through the third opening portion, and the yoke is fixed to the housing so as to cover the second opening portion.