| 摘要 |
PROBLEM TO BE SOLVED: To easily and effectively improve rigidity in a vehicle body without causing a problem such as the narrowing of a space in a cabin. SOLUTION: This lower vehicle body structure of a vehicle has a pair of right and left front side frames 2 and 2 extending to the front side of the vehicle from an installation part of a dash panel 1, a floor panel 3 forming a bottom surface of the cabin, and a tunnel 4 arranged so as to extend in the longitudinal direction of the vehicle body by swelling a central part in the vehicle width direction of the floor panel 3 to the inside of the cabin. A pair of right and left floor frames 5 and 5 are arranged extending in the longitudinal direction of the vehicle body along an under surface of the floor panel 3. A floor sub-frame 6 extending to the rear side of the vehicle while being inclined to the inner side in the vehicle width direction toward the tunnel 4 is arranged from an intermediate part in the longitudinal direction of the floor frame 5. The floor sub-frame 6 and the floor frame 5 are connected by a strength member 13 arranged under the floor panel 3. COPYRIGHT: (C)2010,JPO&INPIT
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