| 摘要 |
PROBLEM TO BE SOLVED: To efficiently transmit a collision load to be input via a mounting pedestal from a front side frame to vehicle body floor to absorb the collision load without increasing strength in a dash panel lower.SOLUTION: A core 38 is arranged inside a hollow front side inclined part 11e extending from a front part of a vehicle body floor 11 made of CFRP to a front upper side in an integrated manner. A solid front wall 11f is erected from a front end of the front inclined part 11e. A lower end of a dash panel lower 17 made of CFRP laminated plate is joined to the front wall 11f. Since a mounting pedestal 20 supporting a front side frame 21 is fixed in a bridging manner from a front face of the front wall to front face of the front inclined part, a collision load upon front collision can be efficiently absorbed by transmitting and distributing the collision load to the front inclined part having increased strength. Accordingly, the collision load which is to be born by the dash panel lower is reduced, weight reduction of the dash panel lower can be achieved, and cost reduction can be achieved by reducing an amount of use of a CFRP material. |
