PURPOSE: A motor is provided to increase a rotation force by changing the structure of a base plate and a sleeve holder. CONSTITUTION: A motor includes a sleeve(52), a sleeve holder(70), and a base plate(80). The sleeve supports a shaft. The sleeve holder fixes the sleeve to the inner surface thereof and a coupling rack is protruded from the lower side of the sleeve holder to the lower side of an axial direction. The base plate has a sleeve holder insertion hole with the inner surface in contact with the outer surface of the coupling rack and has a curvature on the lower side thereof. The sleeve holder covers the lower side of the sleeve holder insertion hole by extending the coupling unit of the coupling rack to the outside of the sleeve holder insertion hole.
