LOWER PART VEHICLE BODY STRUCTURE OF VEHICLE

PROBLEM TO BE SOLVED: To provide a lower part vehicle body structure of a vehicle capable of reconciling securing of rigidity of a vehicle body and an increase in capacity of a fuel tank by providing a cross member extending in a vehicle width direction between front end parts of a pair of left and right rear frames to connect both the rear frames and arranging the cross member on a lower side of a floor panel in front of the fuel tank. SOLUTION: In this structure, the floor panels 2 and 6 and a pair of left and right rear frames 12 holding a prescribed interval in a vehicle width direction and extending in the longitudinal direction of a vehicle on rear sides of the floor panels 2 and 6 are provided, and the fuel tank 13 is arranged between the rear frames 12. The cross member 14 extending in the vehicle width direction between the front end parts of the rear frames 12 is provided to connect both rear frames 12. The cross member 14 is arranged on the lower side of the floor panel 2 in front of the fuel tank 13. COPYRIGHT: (C)2006,JPO&NCIPI