| 摘要 |
A cylinder lock can be manipulated by a control key (7) and a system key (8), each of which has a system code (7a , 8a) and a side code (7b , 8b). With the aid of the control key (7), the lock-cylinder (2) of the lock can be removed from the casing (3) for replacement with another cylinder. The cylinder plug (6) is surrounded by a lock-part (5) having a latching element (5a) which is moveable through an angle of about 20 DEG between a latching and a releasing position. When replacing the lock-cylinder, the cylinder is released through the action of the side code (7b) on the control key (7) and a side-bar (20) which is manipulated by side pins (19) mounted in the plug (6). To this end, grooves (26, 25) provided respectively in the lock-cylinder (2) and the lock-part (5) for accommodation of the side-bar (20) may be provided with peripheral extensions which enable the side-bar to move idly.
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