Lateral reinforcement for absorption of impacts on vehicle doors

It incorporates some end support sectors (4,5) which are welded to the door of the vehicle, a longitudinal insertion (3) in the central area and some end insertions (1) and (2), separated from the central insertion (3) by transition regions (7), of less depth, which are deformed absorbing energy in addition to that absorbed by the central insertion (3) thereby delaying the hinge phenomenon of the central area. The reinforcement incorporates a section of wave profile, both in the areas with insertions and in the transition regions.