| 摘要 |
The invention concerns a quick fastening safety device of the type comprising two parts (1 and 2), one of which includes a cradle (4) capable of being mounted astride a shaft (3) secured to the other part, one of the parts including an opening (7) adapted to be run through by a hook-shaped extension (6), secured to the other part, beneath which can be inserted a locking plate (8) under the action of springs which can be released, the release of said springs being brought about by passing said extension through said opening. The invention is characterised in that the hook has means adapted to counter the reverse displacement of the part comprising said hook when the latter has passed through said opening. The hook (6) has, at least, a lateral finger (11) capable of extending above the locking plate (8). |
