Patent ID: 8690227

Claim:
A lower vehicle-body structure of a vehicle, comprising: a dash panel extending in a vehicle width direction; a hinge pillar connected to an end portion, in the vehicle width direction, of the dash panel; a side sill connected to a lower portion of the hinge pillar and extending in a vehicle longitudinal direction; a floor panel connected to the side sill; a gusset member provided in back of a front wheel and connecting the dash panel and the hinge pillar; a first reinforcing member connected to the gusset member to reinforce the lower portion of the hinge pillar; said first reinforcing member comprising an upper-side reinforcing member which is connected to an upper-side connection portion of the gusset member via a fastening member and arranged on an outward side, in the vehicle width direction, inside the hinge pillar and connected to the side sill, and a lower-side reinforcing member which is connected to a lower-side connection portion of the gusset member via a fastening member and connected to the side sill; and a third reinforcing member which is arranged in the vehicle longitudinal direction at said side sill, the third reinforcing member including an inside reinforcing member which is arranged longitudinally along an inner face of an upper-side corner portion of an inside frame member of the side sill and forms a closed cross section together with the inside frame member of the side sill; wherein a first closed cross section is formed by said gusset member and said hinge pillar, a second closed cross section is formed by said first reinforcing member and the hinge pillar, and a third closed cross section is formed by said inside reinforcing member and the side sill, respectively, in a sectional view perpendicular to a longitudinal direction of the side sill, and said first, second and third closed cross sections are overlapped in the vehicle longitudinal direction; said third reinforcing member further including an outside reinforcing member which is arranged longitudinally along an outside frame member of the side sill and connected to said upper-side reinforcing member.