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: Front vehicle body structure includes left and right front side frames, a subframe provided on the undersides of the side frames, and left and right mounting brackets for connecting the side frames and subframe. Engine-transmission unit is mounted on the subframe. Respective rear half portions of the side frames extend toward the rear of the vehicle body while gradually approaching the centerline of the vehicle body. Left and right mounting brackets are provided, on the respective rear half portions, to project toward the centerline. The left and right mounting brackets are detachably connected to the subframe. When an impact load greater than a predetermined intensity has been applied, the left and right mounting brackets are detached from the subframe and then squashed by the engine-transmission unit while effectively absorbing the impact.

Abstract: A vehicle front body structure includes a hollow front side frame of closed cross-sectional structure having a wheel relief portion having a horizontal width reducing to allow swivel movement of a front wheel of the vehicle. The wheel relief portion has a pair of reinforcement beads extending in a longitudinal direction of the vehicle and projecting from an outer sidewall and an inner sidewall, respectively, of the front side frame into an internal space of the hollow front side frame. The reinforcement beads have top surfaces being in abutment with each other and firmly fixed together.

Abstract: A structure for mounting a vehicle seat includes: a side sill extending in a front-rear direction of a vehicle body on a side of the vehicle body; a cross member extending in a width direction of the vehicle body; a floor frame substantially extending in a front-rear direction of the vehicle body, with an end portion curved and joined to the side sill, and thus bridging the side sill and the cross member; a seat-mounting bracket joined to the floor frame; and a seat fixed at least to the seat-mounting bracket. With this structure, the seat can be securely fixed to the vehicle body.

Abstract: A vehicle front body structure includes an upper member extending from the lower end of a front pillar in a forward direction of a vehicle body and disposed outward a front side frame in a transverse direction of the vehicle body. The upper member has a substantially rectilinear configuration and is arranged to slope upward in a rearward direction of the vehicle body so that a load applied to a front end portion of the upper member can be born by the front pillar.

Abstract: In a subframe structure at a lower front portion of a vehicle, the subframe structure includes a load input portion arranged between a front end of a side frame and a bumper beam, a load introducing portion extending rearwardly downward from the load input portion, and a body portion extending rearward from the load introducing portion. The load input portion, the load introducing portion and the body portion are continuously provided.

Abstract: A front structure of a vehicle body having a pair of right and left front frames. Each front frame includes an axial load receiving member having first ridge lines extending substantially straight over the length thereof in the longitudinal direction of the vehicle body, and a moment receiving member welded to the axial load receiving member and having second ridge lines branched from substantially longitudinally central portions of the front ridge lines and curved inwardly of the vehicle body as extending rearwardly of the vehicle body.

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: An automobile front body structure including a front side frame and a lower frame. A front end of the front side frame and a front end of the lower frame are arranged in parallel in the direction of the vehicle width and are connected to one another.

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 structure for mounting a vehicle seat includes: a side sill extending in a front-rear direction of a vehicle body on a side of the vehicle body; a cross member extending in a width direction of the vehicle body; a floor frame substantially extending in a front-rear direction of the vehicle body, with an end portion curved and joined to the side sill, and thus bridging the side sill and the cross member; a seat-mounting bracket joined to the floor frame; and a seat fixed at least to the seat-mounting bracket. With this structure, the seat can be securely fixed to the vehicle body.

Abstract: A front structure of a vehicle body having a pair of right and left front frames. Each front frame includes an axial load receiving member having first ridge lines extending substantially straight over the length thereof in the longitudinal direction of the vehicle body, and a moment receiving member welded to the axial load receiving member and having second ridge lines branched from substantially longitudinally central portions of the front ridge lines and curved inwardly of the vehicle body as extending rearwardly of the vehicle body.

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 vehicle body structure for efficiently transmitting and dispersing collision energy is provided. The vehicle body structure includes a floor tunnel provided in the center of the vehicle width and extending longitudinally of a vehicle body. Side portions of the floor tunnel are joined to floor frame members provided on the right and left thereof. A rear portion of the floor tunnel is joined to center frame members provided rearward thereof. Collision energy acting on the front end of the floor tunnel is transmitted and dispersed to the right and left floor frame members and the center frame members. Collision energy acting on the floor frame members is transmitted and dispersed to the floor tunnel and the center frame members. Collision energy transmitted to the center frame members is transmitted and dispersed through a plurality of crossmembers disposed rearward of the floor tunnel to the rear of the vehicle body.

Abstract: Front vehicle body structure includes left and right front side frames, a subframe provided on the undersides of the side frames, and left and right mounting brackets for connecting the side frames and subframe. Engine-transmission unit is mounted on the subframe. Respective rear half portions of the side frames extend toward the rear of the vehicle body while gradually approaching the centerline of the vehicle body. Left and right mounting brackets are provided, on the respective rear half portions, to project toward the centerline. The left and right mounting brackets are detachably connected to the subframe. When an impact load greater than a predetermined intensity has been applied, the left and right mounting brackets are detached from the subframe and then squashed by the engine-transmission unit while effectively absorbing the impact.

Abstract: A vehicle front body structure includes a hollow front side frame of closed cross-sectional structure having a wheel relief portion having a horizontal width reducing to allow swivel movement of a front wheel of the vehicle. The wheel relief portion has a pair of reinforcement beads extending in a longitudinal direction of the vehicle and projecting from an outer sidewall and an inner sidewall, respectively, of the front side frame into an internal space of the hollow front side frame. The reinforcement beads have top surfaces being in abutment with each other and firmly fixed together.

Abstract: A vehicle body 10 includes right and left floor frames 16 and right and left side sills 13, all extending in a longitudinal direction of the vehicle body, are disposed in parallel with each other, and right and left front side frames 11 extend forward from front ends of the right and left floor frames 16. Rear end sections 75 are butted to the side sills 13 such that the rear end sections approach the side sills 13, and are joined to the side sills 13 at longitudinal midpoints of the side sills 13. A cross member 22 spans across the right and left side sills 13 at positions forward of the joint sections and in the vicinity of the joint sections. A joint section 85 at the side sill 13, the floor frame 16, and the cross member 22 is formed into a substantially triangular shape in plan view.

Abstract: A vehicle body 10 includes right and left floor frames 16 and right and left side sills 13, all extending in a longitudinal direction of the vehicle body, are disposed in parallel with each other, and right and left front side frames 11 extend forward from front ends of the right and left floor frames 16. Rear end sections 75 are butted to the side sills 13 such that the rear end sections approach the side sills 13, and are joined to the side sills 13 at longitudinal midpoints of the side sills 13. A cross member 22 spans across the right and left side sills 13 at positions forward of the joint sections and in the vicinity of the joint sections. A joint section 85 at the side sill 13, the floor frame 16, and the cross member 22 is formed into a substantially triangular shape in plan view.

Abstract: A vehicle body structure for efficiently transmitting and dispersing collision energy is provided. The vehicle body structure includes a floor tunnel provided in the center of the vehicle width and extending longitudinally of a vehicle body. Side portions of the floor tunnel are joined to floor frame members provided on the right and left thereof. A rear portion of the floor tunnel is joined to center frame members provided rearward thereof. Collision energy acting on the front end of the floor tunnel is transmitted and dispersed to the right and left floor frame members and the center frame members. Collision energy acting on the floor frame members is transmitted and dispersed to the floor tunnel and the center frame members. Collision energy transmitted to the center frame memerbs is transmitted and dispersed through a plurality of crossmembers disposed rearward of the floor tunnel to the rear of the vehicle body.