| 摘要 |
Lateral fall resisting performance of a vehicle upon being subjected to an impact load from a diagonally lateral direction is increased so as to obtain impact absorbing performance with improved stability. A pair of flat-plate like dividing walls (40, 42) is disposed one above the other across recessed groove portions (32, 33), linking wide side walls (30, 31) on both sides in a vehicle width direction. The pair of dividing walls (40, 42) is inclined such that the interval between the dividing walls becomes narrower toward the inside of the vehicle in the vehicle width direction. Thus, lateral fall resisting performance against an impact load applied diagonally externally of the vehicle is increased. In this way, even when a moment load (M) is produced by the impact load applied to the vehicle from the diagonally lateral direction, lateral falling can be suppressed by the presence of the pair of dividing walls (40, 42), whereby excellent impact absorbing performance can be obtained stably. |
