| 摘要 |
A lock mechanism for removably covering an opening in an object includes a face plate having a hole into which a sleeve having a fixed cam is fixedly mounted. A barrel is fixedly mounted in the sleeve, and a lock cylinder is removably received in the barrel. A rotating shaft extends from an end of the lock cylinder, and a rotating cam is mounted on the rotating shaft. A removable nut fastens the lock cylinder to the face plate. The lock mechanism is insertable in the opening of the object to removably cover the opening when the fixed cam and the rotating cam are aligned. When the shaft of the lock cylinder is rotated in one direction, the rotating cam rotates with it, so that the rotating cam is placed out of alignment with the fixed cam. This position is a locked position, at which position the lock mechanism is locked to the object so that the opening is inaccessible. When the shaft of the lock cylinder is rotated in an opposite direction, the rotating cam rotates with it to the unlocked position, at which the rotating cam is aligned with the fixed cam, so that the lock mechanism can be removed from the object and the opening can be accessible.
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