| 摘要 |
PURPOSE: A drainage pump for a washing machine is provided to increase a force applied to an impeller, thereby shortening a time taken until a synchronous motor is consecutively rotated in one direction. CONSTITUTION: A synchronous motor has a rotary shaft(110) on the center. A rotary shaft tab(200) has one protrusion(210). The protrusion is projected in radial direction of the rotary shaft. An impeller(300) accepts the rotary shaft tab. The impeller has an impeller tab(310) projected from one side. The impeller tab is formed on an outer side of the protrusion. When the rotary shaft tab rotates, one side of a stopper(400) is contacted with a side of the protrusion. The other side of the stopper is contacted with a side of the impeller tab. |
