| 摘要 |
<p>The single-piece child-proof screw lock (1) is made of plastic, and has an internal thread (5), where a projection (14) is formed inside at the lower side of the lock, which engages the collar in the fully closed lock. The lock forms a vertical gap to the collar, approximately at the height of the projection, but with circumferential distance, such that the projection is released from collar and the lock is unscrewed by deformation of the lock by pressing against the collar at the point of the gap.</p> |
