| 摘要 |
An axial pin tumbler lock includes a tubular housing in which a fixed hollow cylinder and a rotatable hollow cylinder are coaxially mounted. Several axial bores are formed in an end surface of the fixed hollow cylinder. The rotatable hollow cylinder also has several axial bores formed therethrough. Several tumbler units are received in the bores of the cylinders. Each of the tumbler units consists of a first tumbler pin, a second tumbler pin and a tumbler spring. A locking bar extends through the cylinders. A guide pin is mounted securely on the rotatable hollow cylinder and received slidably in the axially extending slide slot of the locking bar so as to enable synchronous rotation and relative sliding movement of the rotatable hollow cylinder and the locking bar. The engagement of the guide pin in the slide slot retains the locking bar on the lock. A resilient element biases the locking bar to an unlocked position. A spring-loaded retaining element is disposed on the fixed hollow cylinder. The outer end of the locking bar can be pushed to move inward until the retaining element engages with the positioning hole of the locking bar. At this time, the locking bar is located at a locked position.
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