Honda Motor Co., Ltd.

Takeshi Yoshimoto

Kosaku Tomozawa

Manabu Ishizono

Masashige Iseki

Yushi Nakao

Ryo Kita

Takuya Morisawa

Hirotaka Yamaguchi

Hitoshi Kato

Tomonari Takahashi

Kazuo Arai

An object of the present invention is to provide a vehicle body floor structure capable of effectively preventing deformation of a floor panel by increasing bending strength of the floor panel even when an upper reinforcing member of the floor panel is removed. A vehicle body floor structure of the present invention includes a dash cross member disposed along a kick-up portion on a lower surface side of a floor panel, a novel front side frame having an outer frame and an inner frame at a rear portion of a side frame body, and a floor panel on which beads are formed to form a closed cross-section in cooperation with the outer frame and the inner frame.

Vehicle body floor structure

A vehicle body includes left and right side front frames extending towards the back of the vehicle body while curving from the outside in the width direction of the vehicle to the inside in the width direction of the vehicle. The left and right front side frames branch off from the ends thereof into left and right side sill-side extensions extending to the back towards the outside in the width direction of the vehicle, and left and right tunnel-side extensions extending to the back towards the inside in the width direction of the vehicle. Left and right reinforcing members are provided to the inside of curved parts on the left and right side and extend in the front-to-back direction of the vehicle body in the left and right side.

Structure for front of vehicle body

A front body of a vehicle is formed by attaching a subframe to left and right front side frames. The subframe is disposed in front of a floor of a cabin and extends to the left and right. An engine contact part facing toward an engine inside the front body is disposed on an upper part the subframe. The subframe has rear fastening parts fastened to the respective front side frames, and rear arm connecting parts with which respective lower arms are engaged. A portion between each of the rear arm connecting parts and the corresponding rear fastening part is deformed to absorb shocks.

Front body of vehicle

A structure for the front of a vehicle body includes front side frames. The front side frames have bend portions in the rear portion thereof, the bend portions sloping downwards along a dashboard lower panel as the front side frames extend towards the back of the vehicle body. Side sill-side extensions curve to the side of side sills from the end parts of the bend portions. Curving tunnel-side extensions curve towards a tunnel portion. The side sill-side extensions and the tunnel-side extensions form branched portions branching at substantially the same angle. Triangular load support portions are formed at the back of the branched portions between the side sill-side extensions and the tunnel-side extensions. Rear end support portions for supporting the rear ends of sub frames are provided to the bend portions and the fronts of the load support portions.

Side beam extends from a sub frame, mounted to front side frames, to a front frame section, and includes: a lower impact absorbing bar member having a horizontal intermediate portion joined to the sub frame, and a slanting portion extending upward from the intermediate portion; and a bent impact absorbing member joined to the slanting portion and front frame section and having a smaller strength against an impact than the bar member. Skid plate is mounted to a lower cross beam constituting a lower portion of the frame section and projects forward from the cross beam. Lower impact absorbing bar member is mounted to the cross beam and extends rearward, and an impact absorbing projecting member is provided in front of the bar member. The absorbing projecting member defines a closed sectional shape in conjunction with a rear portion of the skid plate.

Front vehicle body structure

In an automotive vehicle body including a first annular frame () formed by front pillars (), a second annular frame () formed by center pillars () and a front door () internally provided with a front door beam () and fitted between the front pillar and center pillar one each side of the vehicle body, the front door beam overlaps the first annular frame and second annular frame as seen from sideways, and includes a door beam main body () providing a channel member having an open side facing inboard and a tension wire () extending along an inboard side of the door beam main body. Thereby, when another vehicle hits the front door from sideways, because the front door beam overlaps the first annular frame and second annular frame as seen from sideways, the impact energy can be effectively transmitted to the vehicle body. Furthermore, because the door beam main body supports a compressive load while the tension wire supports a tensile load, deformation of the door beam is minimized.

Growing community of inventors

Wako, Japan

Takeshi Yoshimoto