| 摘要 |
<p>A cylinder lock mechanism (34) includes a tubular barrel (62), a lock cylinder (64) rotatable in the barrel, tumblers (66) longitudinally and reciprocally movable within the cylinder, a cap (170) on a front end of the barrel and having a key opening therethrough, a facing member (72) interposed between the cap and the cylinder and having an opening registering with the cap opening, a spacer (74) interposed between the facing member and the cylinder and having an opening registering with the cap opening, such openings when in registry receiving a key (32) for insertion thereof into engagement with the tumblers, an engagement member (76) extending transversely of the cylinder for engagement with the tumblers and laterally movable to and from the tumblers, a locking member (78) extending longitudinally of the cylinder for engagement with the engagement member and laterally movable to and from the tumblers, structure (142, 105) on the cylinder and the barrel respectively for engaging the locking member therealong for locking purposes, structure (174, 175) on the tumblers for engaging the engagement member to support the locking member in a projecting position with respect to the cylinder for locking purposes, and structure (176) on the tumblers permitting the engagement member to move towards the tumblers, thereby to permit retraction of the locking member from the projecting position for unlocking purposes, the engagement member and the locking member being free-floating in the lock mechanism with respect to the cylinder and to the barrel.</p> |
