Trigger mechanism for belt pretensioner

Details Trigger mechanism for belt pretensioner Trigger mechanism for belt pretensioner

1994-11-23

1996-08-06

Rice, Kenneth R.

Land vehicles

Wheeled

Attachment

297478, B60R 2246

Patent

active

055426972

ABSTRACT:
A trigger mechanism for a belt pretensioner comprises a sensor mass which responds both on a head-on collision and on ramming of the vehicle from the rear. The sensor mass may be pivotally mounted and formed by functional parts of the pretensioner drive. In a belt pretensioner which is combined with a belt retractor (10) to an assembly and which has a pyrotechnical piston/cylinder drive, the sensor mass consists of a carrier block (40) pivotally mounted on a base (12) and having a guide cylinder (42) mounted therein and a piston accommodated therein. A striker lever (50) pivotally mounted in the base (12) is released for activating an impact igniter on a gas generator cartridge (44) when the carrier block (40) is pivoted in vehicle-sensitive manner in the one or other direction.

REFERENCES:
patent: 4913497 (1990-04-01), Knabel et al.
patent: 4917210 (1990-04-01), Danicek et al.
patent: 4948171 (1990-08-01), Knabel et al.
patent: 5149128 (1992-09-01), Fohl
patent: 5149134 (1992-09-01), Fohl
patent: 5265813 (1993-11-01), Fohl

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