Impact beam structure of car bumper assembly

摘要

The present invention relates to an impact beam structure of a bumper assembly of an automobile, and particularly, in an impact beam formed by welding an inner impact beam and an outer impact beam, the rigidity of the impact beam by pressing a welding portion of the inner impact beam and the outer impact beam. Will be strengthened. The curvature of the bent portion generated when the first flange portion of the inner impact beam is formed to be different from the curvature of the bent portion generated when the second flange of the outer impact beam is formed, and the bend portion having a small curvature after facing the first and second flange portions together When the electrode needle used for the spot welding is lowered to the first flange portion having the lowest pressure and the electrode is applied at the same time, the first and second flange portions are welded to each other. The welding part of the flange part can be secured more widely. Therefore, even if the collision of the vehicle and the impact energy of the vehicle is applied to the impact beam, the spot welded flange portion is not separated. When the bumper beam is deformed, the bent portion with the larger curvature is also deformed under the impact energy. It can be absorbed.