To provide a body skeleton reinforcement member which prevents or suppresses destroy of a body skeleton member from a sewing part in bending deformation.SOLUTION: In a body skeleton reinforcement member 10, three carbon fiber fabrics 24, 26 and 28 are sewn in a laminate direction to obtain a carbon fiber fabric structure 32 having a closed cross-sectional structure, the carbon fiber fabric structure 32 is impregnated with a resin to obtain CFRP, and a predetermined strength is secured. However, the CFRP has a lower strength against a compressive stress than a tensile stress. The body skeleton member is provides with all sewing parts 30A to 30C on a side where a bending stress of tension acts rather than a neutral surface NS of bending deformation, and accordingly the bending stress of compression acts on the sewing parts 30A to 30C in lateral collision of the vehicle to become a starting point of destroy, and it can prevent or suppress disabling securing of the predetermined strength of the body skeleton member 10.SELECTED DRAWING: Figure 1
【課題】ボデー骨格部材の曲げ変形時に縫合部から破壊されることを防止又は抑制するボデー骨格補強部材を提供する。【解決手段】ボデー骨格補強部材10では、3枚の炭素繊維織物24、26、28を積層方向に縫い合わせることによって閉断面構造の炭素繊維織物構造体32とし、炭素繊維織物構造体32に樹脂を含浸させてCFRPとし、所定の強度を確保している。ところで、CFRPは引張応力よりも圧縮応力に対して強度が低い。このボデー骨格部材は、曲げ変形の中立面NSよりも引張の曲げ応力が作用する側に全ての縫合部30A〜30Cを設けているため、車両の側面衝突時に縫合部30A〜30Cに圧縮の曲げ応力が作用することで破壊の起点となり、ボデー骨格部材10が所定の強度が確保できないことを防止又は抑制できる。【選択図】図1
BODY SKELETON REINFORCEMENT MEMBER
ボデー骨格補強部材
2020-08-20
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge / B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM , Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse / C08J Verarbeitung , WORKING-UP / D03D WOVEN FABRICS , Gewebe |
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