| 摘要 |
PROBLEM TO BE SOLVED: To efficiently absorb impact energy by piping a high pressure pipe and a low pressure pipe on the front side or the rear side of an inside space in close vicinity of each other, and positioning the high pressure pipe on the longitudinal directional outside of the low pressure pipe. SOLUTION: Since a low pressure pipe A has a large diameter and is positioned on the cabin inside R more than a high pressure pipe B, impact energy F acts on the low pressure pipe A in the first place, so that the low pressure pipe A collapses. The low pressure pipe A is pushed outside a car body to push the high pressure pipe B so as to abut to a vertical wall 11a of a recessed part 11. Since the low pressure pipe A is sandwiched between the vertical wall 11a of the recessed part 11 and the high pressure pipe B, the low pressure pipe A is prevented from longitudinal directional positional dislocation, and surely and sufficiently collapses in the position. Since the depth W2 of the recessed part 11 almost coincides with a diameter W1 of the high pressure pipe B, contact points of the vertical wall 11a with the high pressure pipe B with respect to the low pressure pipe A become the almost same position in the car width direction, so that the low pressure pipe A can be sufficiently crushed.
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