Force limiting unit for a motor vehicle

摘要: The invention relates to a force limiting unit for use in motor vehicle, which is designed setting the absorption of occurring dangerous situation vehicle between two parts moving relative one another. comprises kinematic energy device with design that, event predetermined profile speed difference another during instance, enables different levels be realized according mass and momentum instance. self-locking belt retractor comprised shaft, holds mounted inside housing. system, responds rotation shaft an unwinding direction, consists number two-armed pendulum masses (16), are distributed over periphery manner that them swing around center bearing point (17) fixed masses, both final positions their swinging movement, engage tooth (19) located at ends external toothing (15) toothed ring (13) coupled rotate therewith. such oscillation respective (16) generated by sliding flanks teeth (19), formed on (13).