Motor vehicle seat safety structure has rigid central bar inside concentric tube joined to seat back rigid protection structure to absorb impacts

摘要

#CMT# #/CMT# The safety structure consists of a rigid central bar (1) inside a concentric tubular structure (2) fixed to the seat back rigid protection structure (3, 3a). One of the bars (1, 2) is connected to a component (4) that is deformable by twisting when one of the bars is subjected to torsion, with one end of the deformable component connected to the central bar and the other (6) fixed to the tube. The joint between the first end and the central bar is in the form of a nut (10b) that slides between the bar and tube on a system of grooves, lugs and spiral ramps. #CMT#USE : #/CMT# Motor vehicle hinges seat back safety structure. #CMT#ADVANTAGE : #/CMT# The safety structure is simple in design and absorbs impacts by plastic deformation. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a lengthwise section of the safety structure. 1 : Inner bar 2 : Concentric tubular bar 3, 3a : Seat back protection structure 4 : Deformable component 6 : Second end of deformable component 10b : Sliding nut.