| 摘要 |
<p>A rotor (10) of an outer rotor type motor is coupled to an outside of a stator, and is provided with a shaft couplet (5), for being connected with a shaft of a drum, fixed at its center portion by an injected material, and a plurality of radiation holes (1 ) formed therein continuously in a radial direction. The rotor (10) includes at least one cooling fin (15) provided with a base member fixed to a bottom surface of the rotor and a curved member attached to the base member (11 ), wherein the cooling fin (15) is combined with the bottom surface so as to be disposed adjacent to the radiation hole (1). Therefore, a contact area with air can be increased an air circulation through the radiation holes (1 ) can be facilitated. Accordingly, the efficiency of a washing machine can be prevented from being deteriorated despite its long period operation, and any damage, which may be caused to other parts due to the overheating, can also be prevented.</p> |
