A drive device includes: a cam; a clutch installed on a same shaft with the cam, and for connecting/disconnecting rotational force from a power source to the cam through the shaft according to rotation of a clutch collar; an actuator including a claw part; and a control mechanism for controlling a position of the claw part of the actuator, wherein a projection part includes a first projection part and a second projection part provided at asymmetric positions on a periphery of the clutch collar, and an angle A and an angle B satisfy the angle A