| 摘要 |
PURPOSE:To prevent a rotor and a shaft from loosening by projecting a part of a key inserted to keyways formed on the rotor and the shaft from the end of the rotor, and engaging it with a recess formed on a nut or a bolt. CONSTITUTION:A keyway 8b is formed on a position opposite to a keyway 4c formed on the core 4b of a shaft 8a, and a key 5 is inserted to the keyways 4c, 8b to provide the fixing function of its rotating direction. The end of the shaft 8a is clamped with a nut 7. A recess is formed on the nut 7, one end of the key 5 is projected from the end of the core 4b of a rotor, and the projection 5a is arranged in the state engaged after clamped in the recess 7a. Thus, it can prevent the nut 7 from loosening. |
