| 摘要 |
PURPOSE:To improve the working property of centering, by a method wherein so far as a motor having a coil cooling fan and a ball bearing is concerned, a ball bearing fixing plate is positioned on centering on using the end face of the coil cooling fan at the time of assembling the motor. CONSTITUTION:So far as a motor for fitting a coil cooling fan 10 close by the coil tip side face on a rotary shaft 4 and for fitting a ball bearing 7 having a ball bearing fixing plate 12 by a shaft end side closer than by the coil cooling fan 10 is concerned, the rotary shaft 4 and a fixing plate socket 10a with a concentric concave section are formed on the end face on the ball bearing side of the coil cooling fan 10. And when the ball bearing 7 is provided for the rotary shaft 4, then the ball bearing fixing plate 12 is mounted on the fixing plate socket 10a of the coil cooling fan 10, and the rotary shaft 4 and the fixing plate 12 are concentrically positioned on centering with slightly applied vibra tion, and the fixing plate 12 and the ball bearing 7 are integrally fixed with screws 13. |
