| 摘要 |
PROBLEM TO BE SOLVED: To stably obtain predetermined impact energy absorption performance of a bumper beam for a vehicle including a pair of outer and inner members each having a laterally extending hat like cross sectional shape, overlapped and joined integrally to each other.SOLUTION: A pair of first standing wall parts 26, 28 of an outer member 20 and a pair of second standing wall parts 46, 48 of an inner member 22 have substantially identical inclination angles, and are substantially parallel to each other. Therefore, when these standing wall parts 26, 28, 46, 48 are bent and buckled into a V-shape or a U-shape, the first standing wall part 26 and the second standing wall part 46 parallel to each other are deformed in synchronization with or following each other, and the first standing wall part 28 and the second standing wall part 48 parallel to each other are deformed in synchronization with or following each other, thus enabling predetermined impact energy absorption performance to be stably obtained. In addition, the inclination angles of these standing wall parts 26, 28, 46, 48 are 20° or less, thus preventing opening deformation, and enabling impact energy absorption performance based on the buckling, to be stably obtained.SELECTED DRAWING: Figure 2 |
