JP2001039346A - Collision resistant reinforcing structure by double floor structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforcing structure by double front floors having effect for suppressing the deformation of a front floor due to the rearward movement of a tire occurring at the time of collision particulary offset collision, without heighten a tread, also lowering the fitting position for an auxiliary machine part to be arranged under the floor. SOLUTION: A figure shows the positional relation of a patch front floor 1, a patch front floor rear 2, a pan front floor 3, a bead group 6, and a locker part 5. Ensuring a space 3e lower than the lower surface of the floor 3 does not sacrifices an auxiliary machine fitting space. Consequently a front floor can be reinforced without heightening the height of the front floor also sacrificing an arranging space for the auxiliary machine, etc., under a floor, to suppress the deformation of the front floor at the time of collision while ensuring boarding/alighting property and travel safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a collision-resistant reinforcing structure having a double floor structure.

[0002]

2. Description of the Related Art FIG. 8 is a side view of a vehicle body according to the prior art, and FIG. 9 is a plan view taken along line DD of FIG. In FIG. 9, a front floor panel 3a is disposed between a bar sheet cloth 4 for attaching a front seat and a dash panel 3d to form a front floor 3b. The front floor panel 3a is composed of pan front floors 3 arranged on the left and right with the distribution in the center of the vehicle traveling direction. A substantially radial bead group 6 is formed on the pan front floor 3, and the rigidity of the front floor 3b is reduced. It contributes to improvement. A front tire house 7 is provided in front of the front floor 3b. When the vehicle collides, a force is exerted on the tire to move rearward to deform the front floor 3b. However, the structure for improving the rigidity of the front floor 3b attempts to suppress the deformation of the front floor 3b to some extent. FIG. 8 shows a vertical sectional structure of the pan front floor 3 and the bead group 6. FIG. 10 shows a CC view of FIG. This figure shows the positional relationship between the pan front floor 3, the bead group 6, and the locker unit 5.

As a conventional technique for further improving the rigidity of the front floor, a hat-shaped closed cross section is generally arranged in the longitudinal direction on the lower surface of the front floor, for example, as disclosed in Japanese Utility Model Publication No. Sho 60-122284. As shown in FIG. 2, a method of combining bead groups orthogonal to each other and increasing the assembly thickness of the front floor, and as shown in Japanese Utility Model Publication No. 2-33183, a bead-shaped portion is formed with a fairing and a reinforcing member. There is known a method in which the thickness of the front floor is reduced to increase the assembly thickness of the front floor.

[0004]

As described above, in order to suppress the rearward movement of the tire at the time of a frontal collision of the vehicle, particularly at the time of an offset collision, by the rigidity of the front floor 3b, the bead group 6 shown in FIGS. It is inevitable that the assembly thickness of the front floor 3b is increased as a result of increasing the depth or adding members as disclosed in Japanese Utility Model Publication No. 60-122284 and Japanese Utility Model Publication No. 2-33183. . Therefore, in the case of a frame car via a cab mount, the above-described thick front floor is mounted at a position higher than the upper surface of the frame, and it becomes difficult to set the vehicle floor tread height low. However, if the floor tread is high, getting on and off is deteriorated, and the center of gravity of the vehicle is further increased. As a result, the running stability is reduced.

[0005] On the other hand, as a method of setting the tread surface height of the front floor 3b low as described above, a cross-section reinforcing material is provided in a space below the upper surface of the frame below the floor behind the front end of the front floor 3b. However, according to this method, the mounting position of the auxiliary parts to be arranged under the floor is lowered, and the height of those parts is reduced, and disadvantages in assembling inspection maintenance of these auxiliary parts are reduced. Bring.

Accordingly, the present invention relates to a front floor 3 which is moved by a rearward movement of a tire which occurs at the time of a collision, particularly an offset collision.
The present invention provides a double front floor structure having the effect of suppressing the deformation of b without increasing the tread surface and at the same time lowering the mounting position of accessory parts to be arranged under the floor.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a bead group is formed on a front floor panel surface of a vehicle in an arbitrary direction on a front floor panel surface, and a bead group for mounting a front seat from a front end of the front floor panel. It is an object of the present invention to create a collision-resistant reinforcement structure with a double floor structure of a vehicle, which is formed by connecting a thick flat plate up to the front side of a bar sheet cloth and connecting between the beads.

[0008]

FIG. 1 is a side view of a vehicle body according to an embodiment of the present invention, and FIG. 2 is a BB plan view of the vehicle body of FIG. In FIG. 2, the front floor panel 3a
Are arranged between the bar sheet cloth 4 for attaching the front seat and the dash panel 3d to form the front floor 3b. The front floor panel 3a is formed by connecting the patch front floor 1, the patch front floor rear 2, and the pan front floor 3 indicated by oblique lines to each other by welding and arranging them on the left and right sides in the center of the vehicle traveling direction. Patch front floor 1, Patch floor rear 2
Is a relatively thick flat plate, and one end of the patch front floor 1 is fixed to the lower end of the dash panel 3d at the tip 3c of the front floor panel 3a. One end of the patch floor rear 2 is fixed immediately before the bar sheet cloth 4. A substantially radial bead group 6 is formed on the pan front floor 3 and contributes to the improvement of the rigidity of the pan front floor 3.
As described above, the patch front floor 1, the patch front floor rear 2, and the pan front floor 3 are welded to each other and connected and fixed between the beads 6, so that the horizontal rigidity of the front floor panel 3a is further dramatically increased. A collision-resistant reinforced structure is obtained by the improved double floor structure. As a result, at the time of a collision of the vehicle, particularly at the time of an offset collision, even if a force acting to deform the front floor 3b is exerted due to the rearward movement of the tire located in the front tire house 7 located in front of the front floor 3b. Thus, deformation of the front floor 3b can be suppressed. FIG. 1 shows a vertical sectional structure in which a patch front floor 1, a patch front floor rear 2, a pan front floor 3, and a bead group 6 are integrally connected. Since the flat patch front floor 1 and the patch front floor rear 2 are added on the pan front floor 3 according to the prior art, the floor thickness 8 of the front floor 3b according to the present embodiment is the same as that of the prior art shown in FIG. It does not substantially increase from the floor thickness 8a. Therefore, the tread height of the front floor does not increase. FIG. 3 shows an AA view of FIG. This figure shows the positional relationship among the patch front floor 1, the patch front floor rear 2, the pan front floor 3, the bead group 6, and the locker unit 5. Since the space 3e below the lower surface of the pan front floor 3 is secured, the space for attaching auxiliary equipment is not sacrificed. Therefore, it is possible to reinforce the front floor 3b without raising the height of the front floor 3b and without sacrificing the space for arranging auxiliary equipment under the floor. Of the front floor 3b can be suppressed.

FIG. 4 shows a three-dimensional perspective external view of a patch front floor 1 and a patch floor rear 2 used on the left side. 1a is a front end 3c of the front floor panel 3a and is fixed on the dash panel 3d. Patch floor rear 2
Is fixed to the bar sheet cloth 4. FIG. 5 shows a three-dimensional perspective external view in a state where the patch front floor 1 and the patch floor rear 2 are integrally connected.

In the above-described embodiment, the case where the patch is divided into the patch front floor 1 and the patch floor rear 2 due to production technology requirements has been described.
Each of the left and right patch floors 1c is not divided and one end 1d is fixed on the dash panel 3d at the tip 3c of the front floor panel 3a, and the other end 1e is fixed on the bar sheet cloth 4. Embodiments are also possible.

FIG. 7 shows the difference in the deformation of the front floor 3b at the time of a collision depending on the presence or absence of the collision-resistant reinforcing structure using the double floor structure of the present invention. In the figure, the vertical axis indicates a value obtained by measuring or calculating the amount of deformation movement of the deformation measurement target part at the time of an experimental collision from a fixed reference position inside the vehicle, and the horizontal axis indicates the name of the deformation measurement target part. The deformation measurement target part on the horizontal axis is
These deformations directly affect the size of the space to be secured at the time of collision. A broken line a in FIG. 7 shows a case without a patch floor according to the prior art, and a broken line b shows a case with a collision-resistant reinforcing structure with a double floor structure according to the present invention. It can be seen that the effect of the reinforcement of the front floor 3b at the time of collision of the collision-resistant reinforcement structure with the double floor structure according to the present invention is great.

[0012]

1) On the front floor panel of a vehicle, a bead group is formed in an arbitrary direction on the front floor panel surface, and a thick plate extends from a front end of the front floor panel to a front side of a bar sheet cloth for attaching a front seat. In this case, the vehicle is located in the front tire house 7 located in front of the front floor at the time of a collision of the vehicle, particularly at the time of an offset collision, by the collision-resistant reinforcing structure by the double floor structure of the vehicle provided to connect the beads. Even when the tire moves rearward and acts to deform the front floor, deformation of the front floor can be suppressed. 2) Since a flat patch front floor and a patch floor rear are added on the conventional pan front floor, the front floor thickness does not substantially increase from the conventional front floor thickness. . Therefore, the tread height of the front floor does not increase. 3) The space below the lower surface of the pan front floor is secured, so that the space for attaching the auxiliary equipment is not sacrificed. Therefore, the front floor can be reinforced without increasing the height of the front floor and without sacrificing the space for arranging auxiliary equipment under the floor. 4) Accordingly, it is possible to reinforce the front floor without increasing the height of the front floor and without sacrificing the space for arranging auxiliary equipment under the floor. Front floor deformation can be suppressed.

[Brief description of the drawings]

FIG. 1 is an assembled side view of a vehicle body according to the present invention.

FIG. 2 is a BB view of the vehicle body assembly side view 1;

FIG. 3 is a sectional view taken along the line AA in FIG. 2;

FIG. 4 is a three-dimensional perspective view of a patch front floor and a patch front floor rear.

FIG. 5 is a three-dimensional perspective view of the connection between the patch front floor and the patch front floor rear.

FIG. 6 is a three-dimensional perspective view of an integrated patch front floor.

FIG. 7 is a diagram showing a difference in deformation of the front floor 3b at the time of a collision depending on the presence or absence of a collision-resistant reinforcing structure.

FIG. 8 is a side view of a conventional vehicle body assembly.

FIG. 9 is a side view of the vehicle body assembly of the prior art, taken along the line DD in FIG.
FIG.

FIG. 10 is a CC view of FIG. 9 of the vehicle body assembly.

[Explanation of symbols]

 1 Patch Front Floor 2 Patch Front Floor Rear 3 Pan Front Floor 3a Front Floor Panel 3b Front Floor 3c Front Floor Panel Tip 3d Dash Panel 3e Front Floor Lower Space 4 Bar Front Seat 5 Locker Part 6 Bead 7 Tire House 8 Front Floor Floor Thickness

Claims (1)

[Claims] 1. A front floor panel of a vehicle,
A vehicle in which a bead group is formed in an arbitrary direction on the front floor panel surface, and a portion from the front floor panel front end to the front side of the bar sheet cloth for attaching the front sheet is provided by a thick flat plate on the indoor side to connect the beads. Collision-resistant reinforcement structure with double floor structure.