BELT ROLLER WITH DAMPED FORCE LIMITER

摘要

In a self-locking belt roller with a vehicle-sensitive and/or seat belt-sensitive controllable blocking device, in which the belt roller is provided with a force limiting device for restricted belt withdrawal when a blocking member is engaged, and in which the force limiting device comprises a torsion rod, which is connected at one end to the belt winding shaft and at the other end to the blocking member of the belt roller, the force-path curve is to be better adapted to the special features of the deceleration curve of the vehicle or its occupants. To this end, for connecting the torsion rod (16) to the blocking member (15), a profile head (14), which is connected to the associated shaft end face and rotates together with the belt winding shaft (13), is provided as a support for the radially deflectable blocking member (15), and an additional energy-dissipating structure (17, 18, 19, 25, 26, 27, 28) is provided in the force transmission path between the torsion rod (16), profile head (14) and shaft (13) for increasing the restraining force before the torsion rod (16) becomes effective and for obtaining a stepped and/or degressive force-path characteristic curve.