| 摘要 |
<p>A key-in-lever type door lock which can be installed on either a left hand or right hand door by a left-right reverse operation of a reverse plate (48, 48'). The lock comprises a lock assembly which regulates a uni-directional, 45-degree rotation of a handle (24, 34) thereof and a latch assembly which converts the 45-degree rotational movement to a retraction of a latch bolt (90). The look is jimmy-proof, i.e., secure against improper manipulation, by the provision of a latch stop (86) pivoted to the latch bolt (90) and being movable together therewith. The latch stop (86), which has a catch end (862) normally blocked by a retaining plate (82), is operationally pivotable about the latch bolt (90) to release the blockage, thereby permitting a relative sliding movement between the latch stop (86) and the retaining plate (82). <IMAGE></p> |
