| 摘要 |
PURPOSE:To reduce manpower of assembly and the loss by impregnating the porous part of a stator with lubricant thereby bearing the motor shaft rotatably and limiting axial movement of rotor. CONSTITUTION:A motor shaft 5 is press fitted in a boss part 2a arranged on the inner circumference of a back yoke 2 thus constituting the rotor 6 of a motor of the motor shaft 5, a rotor magnet 1 and the back yoke 2. A porous part 12b arranged in the center of a stator 12 is fitted to the motor shaft 5 thus bearing the motor shaft 5 rotatably on the stator 12. The stator 12 having the porous part 12c is made of soft magnetic material where the porous part 12c is impregnated with a lubricant for lubricating the sliding faces of the motor shaft 5 and the stator 12. Axial movement of the rotor 6 is limited. |
