Safety belt arrangement in motor vehicles having a belt tensione

Details Safety belt arrangement in motor vehicles having a belt tensione Safety belt arrangement in motor vehicles having a belt tensione

1996-01-31

1998-04-28

Jillions, John M.

Winding, tensioning, or guiding

Reeling device

With spring motor

B60R 2246

Patent

active

057434808

ABSTRACT:
The invention relates to a safety belt arrangement in vehicles having a belt tensioner comprising: a holder which is to be secured to the vehicle chassis, with a belt winding reel with a safety belt wound thereon being rotatably mounted on the holder; a belt retraction spring arrangement by means of which the safety belt is continuously lightly pretensioned in the draw-in direction so that it only loosely lies against the vehicle occupant secured by it; and an auxiliary drive which is separated drivewise by a clutch from the belt winding reel but is activated abruptly with an accident-dependent acceleration and is rotationally fixedly coupled to the belt winding reel via the then engaged clutch. The auxiliary drive has two band running chambers separated by sealing walls and two draw bands which are each arranged in one band running chamber, with the draw bands being secured at one end to a housing and at the other end to a drive reel and being acted on by the pressure source in the event of an accident-dependent acceleration of the vehicle in order to drive the drive reel which is fixedly connected to the belt winding reel in the belt draw-in direction. In accordance with the invention, the clutch is accommodated in a hollow coupling cavity provided in the drive reel.

REFERENCES:
patent: 4423846 (1984-01-01), Fohl et al.
patent: 5489072 (1996-02-01), Gordon
patent: 5526996 (1996-06-01), Ebner et al.

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