| 摘要 |
<p>A door latch (10) with a cinching mechanism (16) having a manual override (18). The door latch (10) includes an enclosure (12) and a latching mechanism (14) disposed in the enclosure. The latching mechanism (12) has a fork bolt (20) moveable between an unlatched position, a secondary latched position, and a primary latched position. The cinching mechanism (16) has a cinching gear (24) that can drive the fork bolt (20) to the primary latched position. The cinching mechanism (16) also has a gear lever (30) to drive the cinching gear (24). A motor driven cable (34), in turn, drives the gear lever (30). A conduit (44) extends over part of the cable (34). The conduit (44) is attached to a conduit lever (46), which, in turn attaches to the enclosure (12). The manual override (18) includes a pivoting connection (50) that interconnects the conduit lever (46) and the enclosure (12) to allow the conduit lever and the conduit (44) to pivot with respect to the enclosure selectively between a fixed position and a loose position. The override (18) also includes a detent (52). The detent (52) can either engage the conduit lever (46) and retain it in a fixed position, or disengage the conduit lever to allow the conduit lever and the conduit (44) to pivot. If the conduit (44) is allowed to pivot, the latching mechanism (14) can unlatch even if the cinching mechanism (16) fails to operate after it drives the fork bolt (20) to the primary latched position.</p> |
