Tension apparatus

Details Tension apparatus Tension apparatus

1986-03-27

1987-05-12

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

280806, B60R 2246

Patent

active

046643346

ABSTRACT:
A tension apparatus for tensing a webbing of a seatbelt system for a vehicle in an emergency situation of the vehicle, thereby allowing the webbing to be tightly fitted to the occupant's body. When an emergency situation of the vehicle occurs, a relatively large spiral spring for rotating a webbing take-up shaft with a relatively strong force so that the webbing is wound up is connected to a worm wheel. A worm which is subjected to a force for winding up the large spiral spring is movable between a position at which it is engaged with the worm wheel and a position at which it is separated therefrom. Accordingly, the worm is engaged with the worm wheel only when the large spiral spring is to be wound up, and there is no risk of the worm obstructing the operation of the large spiral spring at the time of an emergency situation of the vehicle.

REFERENCES:
patent: 4546934 (1985-10-01), Nishimura et al.
patent: 4579294 (1986-04-01), Sakakibara et al.
patent: 4585184 (1986-04-01), Kawaguchi et al.
patent: 4592520 (1986-06-01), Kawaguchi

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