Patent ID: 8297668
Filing Date: 2012-10-30
Classification: B60R,F16F

Abstract:
1. An impact absorbing member for a vehicle disposed between a vehicle body side member and a bumper member in a posture such that an axial direction of the impact absorbing member is directed in a fore and aft direction of the vehicle, and collapsed like bellows axially upon receipt of a compressive load to absorb an impact energy, the impact absorbing member comprising: a tubular body portion with a closed section constructed of a plurality of plate-shaped side walls; at least one concave groove provided in at least one of the side walls, recessed inwardly and extended parallel to an axial direction of the tubular body portion; reinforcing side walls respectively formed by a pair of parallel side walls which are other than the at least one side wall of the plurality of plate-shaped side walls provided with the at least one concave groove, and which are symmetrically located in the closed section; and flanges integrally formed on the tubular body portion over an entire axial length thereof respectively outside of the pair of reinforcing side walls, each of the flanges including, in a section perpendicular to the axial direction of the tubular body portion, a central portion and a pair of lateral portions, the central portion being connected to the reinforcing side wall, and the lateral portions projecting outward in directions away from the tubular body portion and being bent to spread substantially parallel to the reinforcing side wall in opposite directions, to form a shape of a concave groove as a whole having a bottom portion at a side of the reinforcing side wall outside of the tubular body portion.