Patent ID: 8814074
Filing Date: 2014-08-26
Classification: B60R

Abstract:
1. A belt retractor ( 10 ) comprising a frame having a side member defining a first fixed deforming member ( 26 ), a belt reel ( 12 ) rotatable about an axis, a first force limiting structure ( 30 ) coupled to the belt reel ( 12 ) and a second force limiting structure ( 32 ), the second force limiting structure ( 32 ) being adapted to be locked and the first force limiting structure ( 30 ) being functionally arranged in series with the second force limiting structure ( 32 ), wherein the second force limiting structure ( 32 ) includes a deformation element ( 52 ) and a second fixed deforming member ( 54 ) comprising a disk that is secured to the first fixed deforming member ( 26 ), the deformation element ( 52 ) being positioned axially between the deforming members ( 26 , 54 ) and being rotated with the belt reel ( 12 ) about the axis of the belt reel ( 12 ) relative to the deforming members ( 26 , 54 ) upon activation of the second force limiting structure ( 32 ), whereby the deformation element ( 52 ) is deformed, the deformation element ( 52 ) being ring-shaped and the deforming members ( 26 , 54 ) deforming the deformation element ( 52 ) in an axial direction, each of the deforming members ( 26 , 54 ) including a plurality of projections ( 58 , 60 ) that extend axially towards the deformation element ( 52 ) for deforming the deformation element ( 52 ) when the deformation element ( 52 ) rotates relative to the deforming members ( 26 , 54 ), at least one of the plurality of projections ( 58 , 60 ) having a rounded protrusion on one side of the respective deforming member ( 26 , 54 ) and a corresponding indentation in another side of the respective deforming member ( 26 , 54 ) opposite the rounded protrusion.