| 摘要 |
PROBLEM TO BE SOLVED: To provide an under-floor frame system of a vehicle, which can increase the rigidity and reduce the weight by using a carbon fiber composite material.SOLUTION: An under-floor frame system of a vehicle includes: a main frame formed of a carbon fiber composite material and forming a closed quadrangle as a quadrangular frame shape, in which a front part is a front bumper member, both side parts are side members that uniting from the front to the rear, and a rear part forms a rear bumper member; a front cross member and a rear cross member which are formed of a carbon fiber composite material, the front cross member connecting front portions of the side members on both sides of the main frame across the vehicle width direction, the rear cross member connecting rear portions of the side members; and additional side members which are formed of a carbon fiber composite material, are extended in the length direction of the vehicle and are coupled to the side members of the main frame. |
