| 摘要 |
PURPOSE:To enhance the reliability of securing a cover and to facilitate the mounting work of the cover by forming a cutout which communicates between a mounting hole and the end face of a hole side in the cover, and forming a stopper for preventing the cover from being removed near the cutout. CONSTITUTION:A cutout 8 which axially communicates between the end face 7 of a hole side and a mounting hole 4 is formed in a cover 1. The width of the cutout 8 is smaller than the outer diameter of a head of a screw 2, and larger than the minimum diameter of a shaft, and a stopper 5 which is raised from the surface contacted with the head of the screw 2 in a projecting area of the head of the screw 2. Even if the screw 2 is loosened due to a vibration of a rotary electric machine, the head of the screw 2 is contacted with the stopper 5, and the cover 1 is not accordingly axially removed. |
