| 摘要 |
There is disclosed a fastener comprising first and second parts (12, 13) which are separably connectible by being brought together along an engagement direction, the said first part (12) being of essentially rigid construction and comprising a lip (14) and the second part (13) comprising a catch (15) which is bendable so as to pass over the lip (14) as the parts are brought together and to snap back from such bending into engagement with the lip so as to resist separation of the parts, the said first part having a fulcrum (17) on which the latch pivots away from the lip (14) on further relative movement of the two parts in the engagement direction, and the catch having lock means (15c), thereupon activated, against re-engagement with the lip (14). |
