Trw Repa Gmbh

Hermann Weller

Wolf-Dieter Honl

When required a quasi-static blocking function is achieved in a fundamentally conventional belt retractor with vehicle-sensitive and/or webbing-sensitive blocking mechanism comprising a control disc (16) which is provided at its outer periphery with a control toothing (18) and by the movement of which relatively to the belt spool (12) the blocking mechanism is activatable. For this purpose a feeler (26) is held in spring-resilient engagement with the outer periphery of the belt coil. An actuating arm (34) of a control pawl (24) pivotally mounted on the housing (10) cooperates with control faces of said feeler (26). The control pawl (24) is movable between a first stable position in which it engages with its pawl tip (30) into the control toothing (18) and a second stable position in which it is moved out of the region of the control toothing. With its control faces the feeler (26) following the outer diameter of the webbing coil (B) moves the control pawl (24) into its first stable position when the outer diameter of the webbing coil has reached a predetermined minimum value and into its second stable position when said outer diameter has reached a predetermined intermediate value.

Belt retractor for vehicle safety belt systems

A force limiter comprises a stretch element which is inserted into the force flow path and which under tensile load by increasing its length deforms in force-limiting manner and the longitudinal ends of which are bridged by a stretch-limiting element with insertion of a clearance corresponding to the intended extension of the stretch element. By the stretch-limiting element the failure load of the force limiter is increased without influencing the tensile stress/elongation characteristic within the intended action range.

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Munich, Georgia

Hermann Weller