| 摘要 |
PROBLEM TO BE SOLVED: To provide a tunnel part structure of a vehicle body floor capable of enhancing the rigidity of the tunnel part with a substantially trapezoidal section by a simple structure. SOLUTION: A pair of left and right closed cross section parts 30L, 30R are formed by inside walls 31L, 31R stood in the vicinity of the left and right upper ridgelines R1, R2 of the upper face 21 of the tunnel part 20, outside walls 32L, 32R stood in the vicinity of the left and right lower ridgelines R3, R4 of the tunnel part 20 of the vehicle body floor 10, and upper side walls 33L, 33R closing the inside walls 31L, 31R and the outside walls 32L, 32R opposed to each other. The front ends of these closed cross section parts 30L, 30R are connected to a dash panel 11 with extended parts 34L, 34R extended upwards along the dash panel 11, and moreover, the respective upper ends are connected to an upper member. By this constitution, when a load F1 in the longitudinal direction or a load F2 in a torsional direction applied to the dash panel 11 is input in the tunnel part 20, the closed cross section parts 30L, 30R disperse the load in the longitudinal direction and obtain high rigidity. COPYRIGHT: (C)2008,JPO&INPIT
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