Invention Grant
US09140032B2 Door lock 有权
门锁

Door lock
Abstract:
A door lock (3) includes a latch device (30) and an inner operational device (20) mounted to a first side (1A) of a door (1) and an outer operational device (16) mounted to a second side (1B) of the door (1). The inner and outer operational devices (20, 16) can be operated to retract a latch (38) of a latch device (30) from an extended, latching position to a retracted, unlatching position. A tooth (223) on an actuator (219) of the outer operational device (16) breaks if a large force is applied to a handle (197). A spindle (191) pivots freely without moving the latch (38), preventing damage to components of the outer operational device (16) and the latch device (30). A base (811) of the latch device (30) can be comprised of first, second, and third plates (813, 847, 883) to allow sheet metal processing without sacrificing structural strength.
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