DRIVE MOTOR FOR COOLING FAN

摘要

A cooling fan driving motor is provided to improve heat dissipation by increasing a contact area between a case and the air through the heat discharging enlargement unit. A case(110) has a cylindrical shape. A stator is mounted on an inner wall of the case. A cover(120) covers the opened part of the case. A motor shaft(130) is rotatably arranged inside the case. The rotor is fixed in an outer circumference of the motor shaft. One end of the motor shaft is protruded to the outside of the case. A fan mounting unit(140) is combined in one end of the motor shaft. A heating discharging enlargement unit is formed in the outer circumference of the case. A convex part and a concave part are alternatively formed in the heat discharging enlargement unit. The convex part and the concave part are formed in parallel to the axial direction.