| 摘要 |
<p>A vehicle door latch mechanism (10) including the following safety critical structural components:- a) A latch bolt (14), the latch bolt having a closed condition at which it is capable of retaining a striker and an open condition at which it is capable of releasing the striker, b) A pawl (16), the pawl in use releasably securing a latch bolt in its closed condition, and c) A retention plate (16), the retention plate having at least one of :- i) A mouth (24), the mouth co-operating with the retention means of the latch mechanism to releasably retain the striker in the mouth; ii) A pivot pin hole (26, 28) defining a pivot pin hole surface for a pivot pin, the pivot pin being secured to the retention plate in the hole or being pivotally mounted in the hole; and iii) Fixing means (30, 31, 32) for fixing the latch mechanism in its operating position; the latch bolt, pawl and retention plate co-operating in use to releasably retain a striker. In which at least one of the said safety critical structural components is made from a plurality of structural laminations (20, 21: 45, 46, 47: 60, 61, 62) of material <IMAGE> <IMAGE> <IMAGE></p> |
