Vehicle door latch with double lock

Details Vehicle door latch with double lock Vehicle door latch with double lock

1998-07-21

2000-02-01

Boucher, Darnell M.

Closure fasteners

Bolts

Swinging

292201, 292DIG23, 292DIG62, 70283, E05C 306

Patent

active

060194022

ABSTRACT:
A vehicle door latch has a forkbolt, a detent that holds the forkbolt in a latched position, a release mechanism that moves the detent to release the forkbolt, a lock mechanism for disabling the release mechanism, an inside lock lever for operating the lock mechanism and a double lock for disabling the inside lock lever. The detent is moved by an intermittent lever that is part of the release mechanism and part of the locking mechanism. A composite lock lever forming part of the lock mechanism moves the intermittent lever back and forth between an unlock position where the intermittent lever drives the detent to release the forkbolt and a lock position where the intermittent lever free wheels with respect to the detent. The intermittent lever is pivotally connected to an unlatching lever of the release mechanism that is operated by inside and outside release levers. The composite lock lever includes a lower lock lever, an upper lock lever and a spring that stores energy when the lower lock lever pivots with respect to the upper lock lever. The lock mechanism includes an inside lock lever and an outside lock lever for operating the lower lock lever. When engaged, the double lock assembly blocks the upper lock lever so that the vehicle door latch cannot be unlocked by the inside lock lever.

REFERENCES:
patent: 3421785 (1969-01-01), Slattery
patent: 5277461 (1994-01-01), Dzurko et al.
patent: 5328219 (1994-07-01), Konchan et al.
patent: 5454608 (1995-10-01), Dzurko et al.
patent: 5474339 (1995-12-01), Johnson
patent: 5503441 (1996-04-01), Schwaiger
patent: 5577782 (1996-11-01), Johnson et al.
patent: 5649726 (1997-07-01), Rogers, Jr. et al.

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