Patent ID: 8955784
Filing Date: 2015-02-17
Classification: B60R

Abstract:
1. A self-locking seat belt retractor; comprising: a locking device which can be actuated in a vehicle-sensitive or in a belt webbing-sensitive manner, a belt shaft, upon which the belt webbing can be wound, a two-stage load limiting device operatively arranged between the locking device and the belt shaft, thereby creating a force flux between the locking device and the belt shaft for allowing a load-limited belt webbing extraction during a load limitation action, the load limiting device including a third load limiting element acting parallel to the second load limiting element with the low load limitation level provided between the locking device and the belt shaft, wherein the third load limiting element is formed by at least two first structural elements and at least a first set and a second set of second structural elements, one of the second structural elements of each of the first set and the second set resting against one of the at least two first structural elements within the force flow between the locking device and the belt shaft, wherein the second structural elements are sheared off during the load limitation action when the load acting on the webbing exceeds the low load limitation level, and wherein the first set of second structural elements consists of a different number of second structural elements than the second set of second structural elements.