Abstract: A rear structure of a vehicle body including: an arc-shaped frame which is fixed at a middle portion along an extending direction thereof to a rear panel, and has first reinforcing portions in which both ends along the extending direction, which extend along a longitudinal direction of the vehicle body, and which have cross sections opening toward corresponding rear frames; and a pair of rear frames fixed at a rear end thereof to the rear panel, fixed at a front end thereof to corresponding side sill, and has a second reinforcing portion which extends along the longitudinal direction and which has a cross section opening toward the corresponding first reinforcing portion, wherein the first reinforcing portions and the corresponding second reinforcing portions are fixed to each other interposing side flanges of a spare tire pan therebetween.

Abstract: A vehicle floor structure including a floor panel which includes: a plurality of arc beads which are provided on a surface of the floor panel so as to be arranged in parallel with each other and to extend from a side sill inner toward a middle cross member while being bent; and a bracket which is provided in the vicinity of the side sill inner for fixing an auto part, wherein: at least one of the beads in the vicinity of the side sill inner is diverged and connected to the beads at a farther side with respect to the side sill inner; the bracket is fixed so as to cover the bead in the vicinity of the side sill inner; and a farther end portion of the bracket with respect to the side sill inner is fixed so as to straddle the diverged beads.

Abstract: In a floor panel in a vehicle, a plurality of beads are arranged in parallel on the floor panel; a joint part for connecting adjacent two of the beads is provided so as to form a coplanar surface over the two beads; a positioning hole, which is used for positioning the floor panel during assembly, is provided in the joint part; and a burr, which protrudes toward the inside of the beads, is formed at the inner periphery of the positioning hole. Preferably, the length of the joint part along the length of the two beads is determined so as to secure the width length of each of the two beads on both sides of the positioning hole. Typically, a plurality of the positioning holes is provided so as to be dispersed in the front-to-back direction of the vehicle.

Abstract: In a floor panel in a vehicle, a plurality of beads, each having an arc form, are coaxially arranged on the floor panel; the center of the coaxially-arranged beads is positioned on either of side sills provided on the right and left sides of the vehicle; and each of the beads has an inclined surface, and the inclination angle of the surface with respect to the horizontal position is gradually decreased in a direction from the inner side to the outer side along the width of the vehicle. Typically, each of the beads protrudes upward, and has an inclined rear wall, and the inclination angle of the rear wall with respect to the horizontal position is gradually decreased in the direction from the inner side to the outer side along the width of the vehicle.

Abstract: A high-rigidity, light-weight bottom structure for a vehicle body is disclosed. The structure comprises a rectangular framework and an X-shaped frame member positioned inside the rectangular framework. The framework in the vicinity of an area where front wheels or rear wheels are provided is formed by a triangular frame part.

Abstract: A rear vehicle body structure including a left-right pair of first rear frame, a second rear frame arcuate in plan view which is connected to the rear ends of the first rear frames, a rear bumper beam with a front surface of a central portion thereof connected to a rear surface of the second rear frame, a left-right pair of fender beams with one-side end portions thereof connected respectively to both end portions of the rear bumper beam, and a left-right pair of rearmost portion pillars connected to the other end portions of the fender frames.

Abstract: A floor structure of a vehicle body capable of enhancing rigidity against a external force from a side of the vehicle body includes a pair of right and left side sills, a pair of front and rear cross members provided between the pair of right and left side sills, and a floor panel surrounded by the pair of right and left side sills and the pair of front and rear cross members. The floor panel is provided thereover with beads in a concentric arc shape spreading from parts at which the side sills and the cross members are vertically joined to each other. Reinforcement members are provided at corners defined by the side sills and the cross members in such a manner that the reinforcement members are slantingly placed and joined to the side sills and cross members.

Abstract: A floor structure of a vehicle body capable of enhancing rigidity against a external force from a side of the vehicle body includes a pair of right and left side sills, a pair of front and rear cross members provided between the pair of right and left side sills, and a floor panel surrounded by the pair of right and left side sills and the pair of front and rear cross members. The floor panel is provided thereover with beads in a concentric arc shape spreading from parts at which the side sills and the cross members are vertically joined to each other. Reinforcement members are provided at corners defined by the side sills and the cross members in such a manner that the reinforcement members are slantingly placed and joined to the side sills and cross members.

Abstract: In a vehicle frame structure, an upper edge of a frame member is fixed to a lower face of a substantially flat panel, and a bottom wall of an upper stiffener fixed to an inner face of an upper part of a curved portion of the frame member and a bottom wall of a lower stiffener fixed to an outer face of a lower part of a region between two inflection points of the curved portion are arranged in an X shape relative to a top point of the curved portion. Therefore, when a compressive load in the longitudinal direction acts on the frame member, the curved portion of the frame member is effectively prevented from bending by counterbalancing the upward load acting on the lower stiffener bottom wall with the downward load acting on the upper stiffener bottom wall. Moreover, the upper stiffener and the lower stiffener are U-shaped cross-section members that can be formed by bent sheet metal, and thereby minimize any increase in weight due to installation of the stiffeners.

Abstract: In a vehicle frame structure, an upper edge of a frame member is fixed to a lower face of a substantially flat panel, and a bottom wall of an upper stiffener fixed to an inner face of an upper part of a curved portion of the frame member and a bottom wall of a lower stiffener fixed to an outer face of a lower part of a region between two inflection points of the curved portion are arranged in an X shape relative to a top point of the curved portion. Therefore, when a compressive load in the longitudinal direction acts on the frame member, the curved portion of the frame member is effectively prevented from bending by counterbalancing the upward load acting on the lower stiffener bottom wall with the downward load acting on the upper stiffener bottom wall. Moreover, the upper stiffener and the lower stiffener are U-shaped cross-section members that can be formed by bent sheet metal, and thereby minimize any increase in weight due to installation of the stiffeners.

Abstract: A vehicular bumper mounting structure including a support for mounting a hollow, transversely extending bumper beam of high tension steel to a side member of the vehicle body. The support includes a support body and an arm member adapted to be mounted to an upper side or a lower side of the support in an overlapping relation thereto. At least one of the support body and the arm member has at an end thereof an extension extending beyond a rear side portion of the bumper beam. Consequently, if a large collision energy is exerted to the bumper beam, which is hollow and hence light in weight, the collision energy is transmitted to at least one of the support body and arm member before the entire bumper beam having a box cross section is largely deformed, whereby the collision energy transmitted to the support can be transmitted to the vehicle body quickly.