Bumper reinforcement structure

摘要

A bumper reinforcement structure includes a bumper reinforcement element placed at least at the front end or rear end of a vehicle body and fixed to a side member of the vehicle body. The bumper reinforcement element has a closed hollow side cross-section, extends in the vehicle lateral direction and is formed of any one of a light alloy and a steel. A concave or convex portion is formed on at least one surface of the bumper reinforcement element so as to change the shape of the cross-section of the bumper reinforcement along the vehicle lateral direction.