| 摘要 |
<p>The locking mechanism for the door of a safe or the like has sets of bolts (36, 37) and (42, 43) thrown from the side edges of the door and sets of bolts (39, 40) and (45, 46) thrown from the top and bottom edges. The four bolt sets are thrown and withdrawn together by a central thrower (6) to which they are linked by respective drive rods (7-10). The side bolts are arranged in opposed pairs (36, 42) and (37,43) and the top and bottom bolt structures carry abutment bars (51, 52) which, when thrown, are placed between the inner ends of the side bolts in the opposed pairs so that each side bolt in a pair is effective in resisting forced retraction of the other. Two locks (3,4) are provided to lock up the thrower (6) when thrown and to block the retraction of rods (25, 26) carried together with the top and bottom bolt structures.</p> |
