Patent ID: 6405959
Filing Date: 2002-06-18
Classification: B60R,F16D

Abstract:
A safety belt apparatus for a motor vehicle body, comprising:a belt winder adapted to be connected to the vehicle body, the belt winder including a belt roller rotatable about a transverse axis; a safety belt connected to the belt winder and wound on the belt roller, the belt being adapted to be connected to a belt lock connected to the vehicle body; a belt tautener having an inner part and an outer part; a coupling positioned between the belt tautener and the belt roller, the coupling including a disc, a coupling ring, and coupling members; and an unwind blocking apparatus for blocking a further unwinding of the belt after a triggering event, wherein the belt roller is biased by a spring mechanism in a belt wind-up direction, wherein the belt winder is connected to the belt tautener and to the unwind blocking apparatus, wherein the coupling is biased toward a disengaged position and changes to an engaged position upon occurrence of the triggering event, wherein when the coupling moves to the engaged position, the belt roller is driven in the wind-up direction by the belt tautener, wherein the coupling can be automatically disengaged when a torque acting on the belt roller in the wind-up direction exceeds the torque exerted by the belt tautener, wherein a rotational play of a predetermined range is present between the inner part and the outer part, and wherein the coupling is adapted to move between the engaged and disengaged positions due to a relative movement between the inner part and the outer part within the rotational play range.