Patent ID: 6808215
Filing Date: 2004-10-26
Classification: B60R

Abstract:
A bumper apparatus for a vehicle comprising a bumper reinforcement made of extruded aluminum base alloy material being formed in a cross-section having two separated vertical portions, a horizontal upper rib, an intermediate horizontal rib and a lower horizontal rib provided therebetween, each end of the upper, intermediate and lower horizontal ribs being connected to upper portions, middle portions and lower portions of the vertical portions respectively, wherein a thickness of the intermediate rib is thicker than thicknesses of the upper rib and the lower rib, the upper rib and the lower rib buckling earlier than the intermediate rib when load is applied to the bumper apparatus, and the thickness of the intermediate rib is less than a predetermined amount so that a strength of the bumper apparatus is less than a vehicle body tolerable force.