Patent ID: 7135801

Claim:
A motor apparatus comprising: a motor unit provided with: a yoke housing, an armature rotatably supported by the yoke housing, and a brush in electrical contact with the armature to supply an electric power to the armature; a brush holder unit formed from electrical insulating resinous material and provided with: a holder body portion that holds the brush, a connector portion integrally formed with the holder body portion to extend outward from the holder body portion in a radial direction of the motor unit, a contact base portion integrally formed with the holder body portion, at least a part of the contact base portion being connected with the holder body portion at an outside of a width of the yoke housing in the radial direction, an internal terminal held by the holder body portion and in electrical contact with the brush, an external terminal held by the connector portion, to be connected to an electrical power source, and a plurality of contact members that are held by the contact base portion; and a switching unit provided with: a switching plate rotatably driven by the motor unit and having a predetermined electrical conductor pattern to come in contact with the contact members to connect and disconnect between the internal terminal and the external terminal in accordance with a rotational position of the switching plate to connect and disconnect between the internal terminal and the external terminal, and a gear housing fixed to the motor unit to clamp the holder body portion between the yoke housing and the gear housing, and enclosing the switching plate and the contact base portion therein, the gear housing being provided with a communication hole which lets the contact base portion and the contact members protrude therethrough toward the switching plate, to block inner spaces of the yoke housing and the gear housing from an outer space.