Patent ID: 8708380

Claim:
A bumper reinforcement comprising: end portions and an intermediate portion provided between the end portions, wherein the bumper reinforcement is made of a single section light alloy extruded material including a hollow cross-section and is configured to be arranged at a vehicle to be extended in a vehicle width direction, the bumper reinforcement is configured to be assembled on and supported by a supporting member at each of the end portions bent toward a vehicle body side, the hollow cross-section of the light alloy extruded material includes a closed cross-section at the intermediate portion and includes an open cross-section provided with an opening formed at the vehicle body side of the hollow cross-section at each of the end portions, each of the end portions is formed in a manner that a thickness of the hollow cross-section of each of the end portions in a vehicle front-rear direction is gradually reduced toward an end of each of the end portion, each of the openings is configured to be at least partially closed with a connecting portion of the supporting member and is restricted from being expanded, the openings facilitate processing for gradually reducing, by bending, the thickness of the end portions, and a width of the opening is reduced by the processing by gradually reducing the thickness of the end portions.