| 摘要 |
<p>A door lock assembly (4) for fitting in a door (6) in the usual way having a deadbolt subassembly (12) with a deadbolt (42) shiftable between an extended locked position and a retracted unlocked position by an actuator arm 66 and biased toward the locked position by a spring (54). The deadbolt is restrained in the retracted position by restraining plates (28, 34) which release the deadbolt via a trigger subassembly (16). Such a deadbolt is thus automatically mechanically actuated with door closure for security so that closing the door actuates the trigger mechanism releasing the deadbolt restraining means and allowing the biased deadbolt to be thrown to the extended locked position.</p> |
