CAR BODY CONSTRUCTION OF MOTOR CAR

PROBLEM TO BE SOLVED: To improve energy absorption effect when a buffer load is inputted to a CFRP-made rear pillar.SOLUTION: A CFRP-made vehicle body floor 10 comprises a pair of left and right rear pillars 13 which are erected from a rear part of a floor panel 11, and a back panel 14 which is located in a vehicle width direction and connects the pair of left and right rear pillars 13 to each other. A metal honeycomb material 26 having an axis, which extends in the vehicle width direction, is located in the interior of the rear pillar 13, a vehicle width direction outer end part of the back panel 14 faces the honeycomb material 26, and therefore, when a buffer load due to lateral collision is inputted to the rear pillar 13, the metal honeycomb material 26 is pressed onto the back panel 14 and ductile fracture thereof is effectively performed, whereby high energy absorption performance can be obtained.SELECTED DRAWING: Figure 4 【課題】 ＣＦＲＰ製のリヤピラーに衝突荷重が入力したときのエネルギー吸収効果を高める。【解決手段】 ＣＦＲＰ製の車体フロア１０は、フロアパネル１１の後部から起立する左右一対のリヤピラー１３と、車幅方向に配置されて左右一対のリヤピラー１３間を連結するバックパネル１４とを備える。リヤピラー１３の内部に車幅方向に延びる軸線を有する金属製のハニカム材２６が配置され、バックパネル１４の車幅方向外端部がハニカム材２６に対峙するので、リヤピラー１３に側面衝突の衝突荷重が入力したときに、金属製のハニカム材２６をバックパネル１４に押し付けて効果的に延性破壊させることで、高いエネルギー吸収性能を得ることができる。【選択図】 図４