| 摘要 |
The invention concerns a cover for electrical connection boxes, essentially those which are built into a wall.The cover (1) is fitted with a spring (2) with locking studs (3). When the cover is correctly on the box, the points (5) of the locking studs (3) are up against the surface of the box's inner casing. As the cover is removed, the studs (3) have to be turned to one side in order to be able to pass a fixed ring situated in the box near its opening. |
