Patent ID: 7886400

Claim:
A motor comprising: a motor unit that includes a rotatable shaft, which is rotated upon energization of the motor unit; and a speed reducer that includes: a gear housing that is connected to the motor unit; a worm that is received in the gear housing and is rotated by rotation of the rotatable shaft; a worm wheel that is received in the gear housing and is meshed with the worm; and an output shaft that is fixed to a center part of the worm wheel and is rotatably supported by the gear housing through a bearing to externally output a drive force, wherein: the worm wheel includes a receiving recess, which is axially recessed in the center part of the worm wheel, relative to an axial end of a tooth of the worm wheel, which is adapted to mesh with a tooth of the worm; and at least a portion of the bearing is received in the receiving recess.