| 摘要 |
PROBLEM TO BE SOLVED: To provide a strong cover body locking structure hardly requiring a width of a fitting part required for installing a cover body and having no collapsible part such as a thread as well as to provide a cover body locking structure capable of surely putting a cover even when using a robot. SOLUTION: In a cover body locking structure, a taper surface being a larger diameter on the inmost side than a diameter of the opening end is formed on an inner peripheral surface of an elliptic hole part 2a being slight in a difference in the length between the major axis direction and the minor axis direction, a projecting part 3b having a contour shape of a similar figure slightly smaller than the hole part 2a is formed in a cover body 3, a taper surface having an inclination along the taper surface of the hole part 2a is formed on an outer peripheral surface of the projecting part 3b, the projecting part 3b of the cover body 3 is fitted to the hole part 2a, and the inner peripheral surface of the hole part 2a and the outer peripheral surface of the projecting part 3b are meshed with each other by rotating the cover body 3. |
