Vehicle seat assembly with inertia latch

Details Vehicle seat assembly with inertia latch Vehicle seat assembly with inertia latch

1997-11-06

1998-10-27

Cuomo, Peter M.

Chairs and seats

Crash seat

Bottom and back movable as unit in response to force

2972591, 2972621, 2973441, B60N 242

Patent

active

058269363

ABSTRACT:
A seat track assembly for a motor vehicle is disclosed, comprising: an upper track sub-assembly having an upper track; a lower track sub-assembly having a lower track and a stop, with the upper track being slidable over the lower track; and a positive engagement inertia latch for resisting axial sliding motion of the upper track sub-assembly relative the lower track sub-assembly in response to acceleration of the gear relative the lower track sub-assembly. The inertia latch preferably comprises a gear being movable between a non-latching position wherein the gear is rotatable in response to axial sliding of the upper track sub-assembly and a latching position wherein in response to a sudden change in velocity the gear engages the stop, locking the upper track sub-assembly with the lower track sub-assembly. The gear can be mounted on an axle. A base is affixed to the lower seat track sub-assembly, having a contoured surface which receives the axle. The stop can comprise an incline, preferably unitary with the base, and the gear can have gear teeth which wedgingly lockingly engage a rack of teeth on the incline. An all-belts-to-seat latch may also be used to resist both axial displacement and vertical dislocation of the upper seat track relative the lower seat track.

REFERENCES:
patent: 1065280 (1913-06-01), Stanger et al.
patent: 2151419 (1939-03-01), Buchner
patent: 2161366 (1939-06-01), Gregor
patent: 3355211 (1967-11-01), Kolle
patent: 5183236 (1993-02-01), Droulon
patent: 5207480 (1993-05-01), Johnson et al.
patent: 5468050 (1995-11-01), Hall et al.
patent: 5481941 (1996-01-01), Premji
patent: 5567013 (1996-10-01), Chang

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