| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular floor structure capable of ensuring the persistent load deformation characteristic in a head-on collision of a vehicle by a floor skeleton. SOLUTION: A rear side portion in the longitudinal direction of a vehicle of a floor upper reinforcement 10, a floor under reinforcement 12 and a reinforcing member 14 is formed more thin-walled than a front side portion thereof with differential thickness positions 10A, 12A, 14A as boundaries. Thin-walled areas 10C, 12C, 14C on the rear side in the longitudinal direction of the vehicle from the difference thickness positions 10A, 12A, 14A form a first weakened portion 21, a second weakened portion 22 and a third weakened portion 23, respectively. The buckling deformation of each member during a head-on collision of the vehicle occurs in the order of the thin-walled areas 10C, 12C, 14C on the rear side in the longitudinal direction of the vehicle from the difference thickness positions 10A, 12A, 14A of the respective members, and the buckling load is not rapidly degraded in one buckling. COPYRIGHT: (C)2007,JPO&INPIT
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