| 摘要 |
PURPOSE:To reduce the amount of inclination of the pin as well as to ensure relief of the pin so as to realize compact-sized unit, by fixing a pin which regulates positioning of the rotor on a leaf spring having a small spring constant and by fixing the leaf spring to another leaf spring having a larger spring constant on the outer side than the pin. CONSTITUTION:If the position of a position regulating pin 49 does not coincide with the position of the hole 13 of a rotor hub 3 when the rotor is mounted on the rotary drive shaft 45, the pin 49 is pressed downwards by the hub 3. Then, a leaf spring 48 having a small spring constant is bent about a supporting point, i.e. the part at which the leaf spring 48 is attached to a leaf spring 40 and the pin 49 is inclined towards inside. When the pin 49 is inclined by a specified amount or more, the projecting part 49a of the pin 49 and the bottom part 48a of the leaf spring 48 press the shelf-shaped part 40a of the leaf spring 40. Consequently, the leaf spring 40 having a larger spring constant is bent and pin 49 is allowed to descend. In this manner, the amount of inclination of the pin 49 is reduced whereas the relief of the pin 49 is ensured and small-sized device is obtained. |
