| 摘要 |
PROBLEM TO BE SOLVED: To stable provide an impact absorption member having a cross section shape in which an amount of absorption energy is large at collision, fluctuation of load is small and absorption energy efficiency is high while suppressing ununiformness of impact absorption performance by fluctuation of a manufacturing condition. SOLUTION: The impact absorption member is provided with a plurality of ridgeline parts extending in a longitudinal direction and the other part other than the ridgeline parts and absorbs collision energy by buckling it in a longitudinal direction by receiving impact load. A plate thickness ratio of the ridgeline part and the other part ((plate thickness of the ridgeline part/plate thickness of the other part)×100) is 78 to 97%. COPYRIGHT: (C)2006,JPO&NCIPI
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