Belt strap-clamping device for safety belts in motor vehicles

Details Belt strap-clamping device for safety belts in motor vehicles Belt strap-clamping device for safety belts in motor vehicles

1984-02-10

1984-12-04

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

280806, A62B 3502, B65H 7548

Patent

active

044859856

ABSTRACT:
Belt strap-clamping device for safety belts in motor vehicles which has a roll-up device with a belt strap which is rolled-up on a belt drum, and which can be rolled out against a spring-force. The belt from the roll-up device is partially wrapped around a deflection member with an arched deflection surface, hinged around an axis, and arranged after the belt drum. The belt strap works in conjunction with a clamping surface which is fixed in the fitting, such that the deflection member is moved when an increased force is applied, and the belt strap is clamped between the clamping surface and the deflection member. At a normal pulling out of the belt the deflection member is held at a distance from the clamping surface by the force of a spring. The deflection surface is formed by a sleeve-like deflection member, which is during normal operation freely rotatable on an eccentrically supported roller, which can be displaced on a predetermined angular path in relation to a clamping surface. The surface of the deflection member is made so that at an increasing radial force the amount of friction between the belt and this surface also increases. Thereby the deflection member is radially displaced with respect to the roller, which has moved into the blocked position, and makes a positive, frictionally coupled connection with the roller.

REFERENCES:
patent: 1569699 (1926-01-01), Bergstrom et al.
patent: 4327881 (1982-05-01), Fohl
patent: 4378915 (1983-04-01), Fohl
patent: 4387790 (1983-06-01), Yasumatsu et al.

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