Preloader apparatus

Details Preloader apparatus Preloader apparatus

1995-10-30

1997-12-02

Brown, Peter R.

Chairs and seats

Body or occupant restraint or confinement

Safety belt or harness; e.g., lap belt or shoulder harness

297480, 280806, B60R 2246

Patent

active

056928050

ABSTRACT:
A preloader apparatus which retracts a buckle upon quick deceleration of a vehicle to tighten a webbing, and then restores the buckle to a position of ordinary vehicle running, to contemplate the improvement in operability of an operation button. The buckle is retracted upon quick deceleration of a vehicle from an ordinary protracted position to a retracted position through wires wound around a drum. After that, when a buckle-retracting force decreases and becomes smaller than a buckle-protracting force, a force F corresponding to a difference between the both acts on a projection, and the projection is broken. Although a meshing portion of a pawl meshes with an external tooth of an external gear to prevent the external gear from rotation in a direction of buckle protraction, the breakage allows the drum to rotate in the direction of buckle protraction, and the buckle can be restored to the protracted position. Projections abut against a stopper at the protracted position, and the buckle is prevented from further protraction.

REFERENCES:
patent: 4441738 (1984-04-01), Tsuge et al.
patent: 4585184 (1986-04-01), Kawaguchi et al.
patent: 5344096 (1994-09-01), Frei et al.
patent: 5480190 (1996-01-01), Fohl
patent: 5568940 (1996-10-01), Lane, Jr.

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