To provide a motor provided with a mechanism which can save a space and regulate a gap in the thrust direction and/or the radial direction.

The motor 20 includes a case 24, a shaft 21, the first receiving part 25 fixed to the shaft, the second receiving part 27 for rotatably receiving the shaft 21 and regulating displacement in the direction of the shaft by the case 24 and an elastic member 26 having the second region 262 engaged with the second receiving part 27 and the first region 261 for pressing the first receiving part 262 and applying elastic force between the first and second receiving part 261, 262. The second region 262 has the elastic member 26 for engaging with the case 24 for applying the elastic force to the second receiving part 27 in the radial direction of the shaft 21.