| 摘要 |
A bumper reinforcement ( 10 ) of a vehicle bumper structure ( 1 ) includes a beam member ( 20 ), a plate member ( 30 ), a plurality of upper end joints ( 40 ) by which upper ends of the beam member ( 20 ) and the plate member ( 30 ) are joined at plural points arranged widthwise, and a plurality of lower end joints ( 45 ) by which lower ends of the beam member ( 20 ) and the plate member ( 30 ) are joined at plural points arranged widthwise. The plate member ( 30 ) has a plurality of openings ( 35 ) formed therein at properly determined intervals widthwise across the vehicle body as well as a plurality of bead portions ( 36 ), each of the bead portions ( 36 ) passing between two adjacent openings ( 35 ) and bridging one of the upper end joints ( 40 ) to the corresponding one of the lower end joints ( 45 ).
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