JPH05270444A - Floor part structure for car body - Google Patents

Abstract

PURPOSE:To provide a floor part structure for a car body wherein a load can be efficiently transmitted to a tunnel part from a front side member. CONSTITUTION:A rear end part 12A of a front side member 12 is welded to a dash panel 14, and a front end part 18C of a floor member 18 is connected to a lower end part 12E of an extension part 12B of the front side member 12. A console reinforcement is provided upward of a tunnel part 20, and a rear end part 22A of the console reinforcement is fixed to an upper surface of a car width direction central part 24C of a floor cross member 24. Car body longitudinal directional almost central parts 22G, 22H of leg parts 22B, 22C of the console reinforcement are fixed to car width directional both side surfaces 32B, 32C of a bracket 32, and mounting parts 22E, 22F of the leg parts 22B, 22C of the console reinforcement are fixed to the dash panel 14 and an inner side flange 12D of the extension part 12B of the front side member 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure of a vehicle body,
In particular, it relates to a floor structure of a vehicle body having a tunnel portion on a floor panel.

[0002]

2. Description of the Related Art In general, a floor panel constituting a floor portion of an automobile body is provided with a tunnel portion extending in the vehicle front-rear direction at a central portion in a vehicle width direction due to a layout of a transmission and the like. An example of the floor structure of the vehicle body that improves the rigidity of the tunnel portion, particularly the front portion of the tunnel portion
No. 61977.

As shown in FIG. 7, in the floor structure of the vehicle body, a tunnel portion 72 extending in the front-rear direction is formed at the center of the floor panel 70 in the vehicle width direction, and the tunnel portion 72 is at least the front half portion. 72A is formed so as to gradually become higher toward the front. Further, at least two lateral beads 74, 76 extending in the left-right direction are provided at predetermined intervals in the console box mounting portion on the upper surface of the front half 72A of the tunnel portion 72, and these lateral beads 74 are also provided. A front-rear bead 78 is provided to connect the front and rear 76 together. Therefore, the rigidity of the front half portion 72A of the tunnel portion 72 is improved by the lateral beads 74, 76 and the front-rear bead 78.

[0004]

However, in such a floor structure of the vehicle body, from the front side member (not shown) disposed along the vehicle front-rear direction in front of the tunnel portion 72 on the outer side in the vehicle width, In order to efficiently transfer the load to the tunnel portion 72, it is necessary that the offset amount between the front side member and the tunnel portion 72 is small. That is, when the offset amount between the front side member and the tunnel portion 72 is large, the deformation amount of the dash panel interposed between the front side member and the tunnel portion 72 increases, and the load from the front side member to the tunnel portion 72 is increased. It becomes impossible to communicate efficiently.

On the other hand, in a right-hand drive vehicle, particularly a small-sized vehicle, it is necessary to make the tunnel portion as small as possible in order to secure an operation space for the clutch pedal, and to move the side wall portion of the tunnel portion inward in the vehicle width direction. Further, in a left-hand drive vehicle, particularly a small-sized vehicle, it is necessary to make the tunnel portion as small as possible and secure the side wall portion of the tunnel portion inward in the vehicle width direction in order to secure an operation space for the accelerator pedal. For this reason,
In a small vehicle, the amount of offset between the front side member and the tunnel portion in the vehicle width direction is particularly large. Further, in the case of a vehicle body in which the engine is placed horizontally such as a small FF vehicle, it is difficult to move the front side member inward in the vehicle width direction due to the limitations of the engine length and the transmission length.

Therefore, it is extremely difficult to reduce the amount of offset between the front side member and the tunnel portion in the vehicle width direction, and it has been impossible to efficiently transfer the load from the front side member to the tunnel portion.

In view of the above facts, it is an object of the present invention to obtain a floor structure of a vehicle body capable of efficiently transmitting a load from a front side member to a tunnel portion.

[0008]

According to a first aspect of the present invention, there is provided a floor structure for a vehicle body, comprising: a front side member disposed along the vehicle front-rear direction in the vicinity of lower portions of both ends of the vehicle body in the vehicle width direction; A tunnel portion provided substantially in the center of the vehicle in the vehicle width direction along the front-rear direction of the vehicle body, a rear end portion of the front side member and a front end portion of the tunnel portion that are separated from each other to separate an engine room and a vehicle compartment. A dash panel, and a console reinforcement that is fixed to the upper portion of the tunnel portion and has a front end portion that extends outward in the vehicle width direction to a vicinity of a rear end portion of the front side member and that is coupled to the dash panel. It is characterized by that.

[0009]

In the floor structure of the vehicle body according to claim 1 of the present invention,
The load applied to the front side member is transmitted to the tunnel through the dash panel, and the front end is extended to the vicinity of the rear end of the front side member and is connected to the dash panel through the console reinforcement. It is transmitted to the upper part of the tunnel.

Therefore, even when the offset amount between the front side member and the tunnel portion in the vehicle width direction is large, the load can be efficiently transmitted from the front side member to the tunnel portion via the console reinforcement.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vehicle floor structure of the present invention will be described with reference to FIGS. In the figure, an arrow FR indicates a front direction of the vehicle body, and an arrow UP indicates an upward direction of the vehicle body.

As shown in FIG. 2, front side members 12 are arranged in the engine room at the front of the vehicle body 10 near the lower ends of both ends in the vehicle width direction along the vehicle front-rear direction. These front side members 12 have a closed cross-sectional structure extending in the front-rear direction of the vehicle body, and a rear end portion 12A of the front side members 12 is welded to a dash panel 14 that separates an engine room and a vehicle compartment. Further, the rear end portion 12A of the front side member 12 is extended along the dash panel 14 toward the lower inside of the vehicle body.

As shown in FIG. 3, the cross-sectional shape of the extending portion 12B of the front side member 12 as viewed in the longitudinal direction is a hat shape (not shown) with the opening facing the dash panel 14 side, and the outside The flange 12C and the inner flange 12D are welded to the front side surface of the dash panel 14, respectively. Therefore, the extending portion 12B of the front side member 12 and the dash panel 14 form a closed cross-section portion that extends from the rear end portion 12A of the front side member 12 along the dash panel 14 toward the inside of the vehicle body downward.

As shown in FIG. 2, the lower end of the extending portion 12B of the front side member 12 has a dash panel 14 at its lower end.
The floor panel 16 in which the front edge is welded to the lower edge of the
Has reached. A pair of floor members 18 are joined to the lower surface 16A of the floor panel 16 in the vehicle front-rear direction.

As shown in FIG. 3, the sectional shape of the floor member 18 as viewed in the longitudinal direction is such that the opening is the floor panel 16.
It has a hat shape facing the side, and the outer flange 18A
And the inner flange 18B are respectively the floor panel 16
Is welded to. Therefore, the floor member 18 and the floor panel 16 form a closed cross section that extends in the vehicle front-rear direction.

As shown in FIG. 2, the front end portion 18C of the floor member 18 is the extension portion 1 of the front side member 12.
It is connected to the lower end 12E of 2B, and the front side member 12 and the floor member 18 form a continuous closed cross section.

As shown in FIG. 1, a tunnel portion 20 extending in the vehicle front-rear direction is provided at the center of the floor panel 16 in the vehicle width direction, and the front end portion of the tunnel portion 20 is joined to the dash panel 14. Has been done. The tunnel portion 20 has a convex shape that bulges upward in the vertical direction of the vehicle body, and its width gradually narrows from the front to the rear. Further, the floor panel 16 gradually bulges upward from the front to the rear, whereby the tunnel portion 2
The length of 0 gradually decreases from the front to the rear in the height direction.

A floor cross member 24 is welded to the upper surface 16B of the floor panel 16 at a substantially central portion in the vehicle front-rear direction. The cross-sectional shape of the floor cross member 24 as viewed from the longitudinal direction is a hat shape with the opening facing the floor panel 16 side, and the front side flange 24A and the rear side flange 24A.
B and B are welded to the floor panel 16, respectively.
Therefore, the floor cross member 24 and the floor panel 16 form a closed cross section that extends in the front-rear direction of the vehicle body. The vehicle width direction central portion 24C of the floor cross member 24 straddles the tunnel portion 20.

Above the tunnel portion 20, a console reinforcement 22 made of a pipe material is provided. The console reinforcement 22 is substantially A-shaped, and the rear end portion 22A is the top of the A-shape. In addition, the legs 22B and 22C are provided near the front end.
A connecting portion 22D that connects the and is provided.

A rear end portion 22A of the console reinforcement 22 extends along the vehicle width direction and is crushed into a flat plate shape from the vertical direction of the vehicle body. This rear end portion 22A is
The floor cross member 24 is fixed to the upper surface of the central portion 24C in the vehicle width direction by bolts 26.

The leg portions 22B and 22C of the console reinforcement 22 are directed toward the front of the vehicle body from both ends in the vehicle width direction of the rear end portion 22A along both edges in the vehicle width direction of the upper surface 20A of the tunnel portion 20. It has been extended. Also,
Approximately the central portion 22G, 2 of the vehicle body front-rear direction of the legs 22B, 22C
2H are crushed into a flat plate shape from the vehicle width direction, and between these central portions 22G and 22H, a bracket 32 welded to the upper surface 20A of the tunnel portion 20 along the vehicle width direction is provided. It is provided.

As shown in FIG. 3, the central portion 32A of the bracket 32 in the vehicle width direction is recessed downward,
It is welded to the upper surface 20A of the tunnel portion 20. Also,
The lower end edges of the vehicle width direction side surfaces 32B and 32C of the bracket 32 are respectively side wall portions 20B and 20B of the tunnel portion 20.
The center portions 22G and 22H of the console reinforcement 22 are fixed to the vehicle width direction side surfaces 32B and 32C of the bracket 32 by bolts 33 and nuts 34, respectively.

As shown in FIG. 2, the leg portions 22B and 22C of the console reinforcement 22 extend from the central portions 22G and 22H toward the front outside, respectively, and the rear end portion 12A of the front side member 12 is provided. It reaches the vicinity of the inner side in the vehicle width direction. The front ends of the leg portions 22B and 22C of the console reinforcement 22 are bent outward in the vehicle width direction and are crushed into a flat plate shape from the vehicle front-rear direction to form attachment portions 22E and 22F.

These mounting portions 22E and 22F are attached to the dash panel 14 and the front side member 12 by the bolt 28 and the nut 30 provided on the engine room surface of the inner flange 12D of the extending portion 12B of the front side member 12. Is fixed to the inner flange 12D of the extended portion 12B.

Next, the operation of this embodiment will be described. In the floor structure of the vehicle body of this embodiment, the load applied to the front side member 12 is the rear end 12 of the front side member 12.
A and the front end portion of the tunnel portion 20 are transmitted to the tunnel portion 20 through the connected dash panel 14, and the leg portions 22B and 22C are extended to the vicinity of the rear end portion 12A of the front side member 12. Mounting portions 22E, 22
F is transmitted to the upper portion of the tunnel portion 20 via the console reinforcement 22 coupled to the dash panel 14.

That is, the load applied to the front side member 12 is applied from the dash panel 14 and the inner flange 12D of the extending portion 12B of the front side member 12 to the mounting portions 22E and 2E of the console reinforcement 22.
Transmitted to 2F, console reinforcement 22
It is transmitted from the central portions 22G and 22H to the upper portion of the tunnel portion 20 through the brackets 32 via the leg portions 22B and 22C. In addition, console reinforcement 22
Is transmitted from the rear end portion 22A to the upper portion of the tunnel portion 20 via the vehicle width direction central portion 24C of the floor cross member 24 via the leg portions 22B and 22C.

Therefore, even when the offset amount between the front side member 12 and the tunnel portion 20 in the vehicle width direction is large, the load is efficiently transmitted from the front side member 12 to the tunnel portion 20 via the console reinforcement 22. can do. Further, the console reinforcement 22 can improve the strength and rigidity of the vehicle body.

Therefore, as shown in FIG. 3, in a right-hand drive vehicle, particularly a small-sized vehicle, a sufficient operating space for the clutch pedal 40 can be secured.

In this embodiment, the rear end portion 22A of the console reinforcement 22 is fixed to the upper surface of the center portion 24C of the floor cross member 24 in the vehicle width direction by the bolts 26, but the rear end of the console reinforcement 22 is fixed. The fixed position of the portion 22A is not limited to this position, and may be another position near this position with relatively high strength.

As shown in FIGS. 4 to 6, when the extending portion 12 of the front side member 12 cannot be bent sufficiently inward in the vehicle width direction, the inner wall portion of the front side member 12 in the vehicle width direction and the dash. You may set the member toe dash gusset 15 which connects with the panel 14. The end of the member toe dash gusset 15 on the front side member 12 side has a U-shaped flange 15 along the outer circumference.
A is formed, and the flange 15A is welded to the inner side wall portion of the front side member 12 in the vehicle width direction.
Further, at the end of the member toe dash gusset 15 on the dash panel 14 side, a U-shaped flange 1 is formed along the outer circumference.
5B is formed, and this flange 15B is welded to the dash panel 14.

Therefore, in this structure, the load from the front side member 12 is applied to the console reinforcement 22 by the member tow dash gusset 15.
Can be transmitted to.

[0032]

According to the present invention, the front side members are arranged in the vicinity of the lower portions of both ends of the vehicle body in the vehicle width direction along the vehicle front-rear direction, and the front panel is disposed substantially in the center of the vehicle width direction along the vehicle front-rear direction. A dash panel that connects the tunnel section provided, the engine room and the vehicle compartment to the rear end of the front side member and the front end of the tunnel section, and the front end fixed to the upper part of the tunnel section in the vehicle width direction Since it is equipped with a console reinforcement that extends outward to the vicinity of the rear end of the front side member and is connected to the dash panel, the load can be efficiently transmitted from the front side member to the tunnel portion. It has an excellent effect that

[Brief description of drawings]

FIG. 1 is a perspective view showing a floor structure of a vehicle body according to an embodiment of the present invention as seen obliquely from the rear of the vehicle body.

FIG. 2 is a plan view showing a floor structure of a vehicle body according to an embodiment of the present invention.

FIG. 3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a perspective view of a floor structure of a vehicle body according to another embodiment of the present invention as seen from the diagonally front inside side of the vehicle body.

FIG. 5 is a plan view showing a floor structure of a vehicle body according to another embodiment of the present invention.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a perspective view showing a floor structure of a conventional vehicle body as seen obliquely from the front of the vehicle body.

[Explanation of symbols]

 10 Car Body 12 Front Side Member 12A Rear End 12B Extension 14 Dash Panel 16 Floor Panel 18 Floor Member 18A Front End 20 Tunnel 20A Top 22 Console Reinforcement 22A Rear End 22B Leg 22C Leg 22D Connection 22E Mounting part 22F Mounting part 22G Central part 22H Central part 32 Bracket

Claims (1)

[Claims] 1. A front side member disposed along the vehicle front-rear direction in the vicinity of lower portions of both ends of the vehicle body front in the vehicle width direction,
A tunnel portion provided substantially in the center of the floor panel in the vehicle width direction along the front-rear direction of the vehicle body, and a rear end portion of the front side member and a front end portion of the tunnel portion that separate an engine room and a vehicle compartment are connected. A dash panel and a console reinforcement that is fixed to the upper part of the tunnel portion and has a front end portion that extends outward in the vehicle width direction to a vicinity of a rear end portion of the front side member and that is coupled to the dash panel. The floor structure of the vehicle body, which is equipped with