A motor is disclosed. In accordance with an embodiment of the present invention, the motor includes a base, a shaft, which has an end part thereof coupled to the base, a stopper, which is coupled to the shaft and has a latch protruded in a direction of diameter of the shaft, a housing, which includes a hollow part, a ledge and an entrance and exit groove, and a rotor case, which is coupled with the housing. Here, the other end part of the shaft is inserted into the hollow part, the ledge is protruded inwardly in the hollow part such that the latch is caught, and the entrance and exit groove is penetrated through the ledge so as to allow the latch to enter and exit the entrance and exit groove.