| 摘要 |
<p>A door lever assembly for disengaging an unlocked latch of a lockable door latch assembly includes a lever handle (12) rotatably connected to a trim housing (16) supporting a stop plate (34). A cam (42) is operably connected to the lever handle and positioned to rotate in response to rotation of the lever handle, converting its rotational movement to linear movement of a movable slider positioned adjacent to the cam. A lift arm (24) is operably connected to vertical rods (62) of the door latch assembly and an over-ride spring (20) is connected between a slider (30) and the lift arm. The over-ride spring (20) transmits motion of the slider to the lift arm to lift the lift arm and the connected vertical rods when the door latch assembly is in an unlocked position. The over-ride spring compresses in response to slider movement when a blocking slide (45) is positioned to block movement to the lift arm when the door latch assembly is in its locked position, preventing damage to components of the door lever assembly. In an unlocked position, a pivot (70) rotates to control contact between the slider (30) and the stop plate (34). <IMAGE></p> |
