Patent ID: 7190095

Claim:
A motor comprising a motor portion and a gear housing integrally assembled together with the motor portion, the gear housing enclosing a speed-reduction mechanism for reducing a rotational speed of the motor portion, the gear housing receiving a circuit board therein, the motor further comprising: an opening portion facing the motor portion; a board-installing portion to hold the circuit board inserted through the opening portion and along an axial direction defined along a center of the motor portion, wherein the circuit board is disposed in the board-installing portion in such a manner that a plane of the circuit board extends along an axial direction of the motor portion; a cover member to block the opening portion; and a restriction member fixed inside the opening portion and restricting the circuit board from moving to a counter-insertion side of the circuit board in the axial direction, the restriction member is installable at a predetermined position in which the restriction member is limited from contacting with the cover member in the axial direction.