JPH08310451A - Car floor structure - Google Patents

Abstract

PURPOSE: To restrain a vertical wall, assembling a seat cushion via a hinge member, from being inadvertently deformed. CONSTITUTION: An upper floor 2 is extendedly installed in the end of a lower floor 1, and a section closing space S equipped with the vertical wall and an opposed wall 11 being opposed to this vertical wall 21 is installed in a boundary part lying between both these lower and upper floors 1 and 2. A section U-shaped reinforcement 6 consisting of a first reinfrocing piece 61 being superposed on the vertical wall 21, a second reinforcing piece 62 being superposed on an underside of the upper floor 2 and a third reinforcing piece 63 to be joined to the opposed wall 11 is assembled in this closing space S, and then a hinge member 4 is locked to a superposed part between the vertical wall 21 and the first reinforcing piece 61.

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, more specifically, to a vertical wall connecting a lower floor and an upper floor that is one step higher than the lower floor. Related to the floor structure of the vehicle.

[0002]

2. Description of the Related Art Generally, a rear floor of a vehicle is constructed by connecting a rear end of a lower floor and a front end of an upper floor which is one step higher than the lower floor through a vertical wall, as disclosed in Japanese Utility Model Laid-Open No. 61-71576. And a seat supporting a seat back foldably with respect to the seat cushion is arranged at the front part of the upper floor, and the front end part of the seat cushion is swingably connected to the vertical wall via a hinge member. However, it can be seen that the seat cushion and the seat back are erected on the lower floor so that the upper floor is used as a luggage compartment.

[0003]

By the way, in the above floor structure, when a forward load is applied to the seat cushion and the seat back which are erected with respect to the lower floor, the hinge member is fixed vertically. There is a problem that a very large force is applied to the wall and the vertical wall is deformed.

The present invention was developed in view of the above circumstances, and an object thereof is to prevent the vertical wall to which the seat cushion is assembled via a hinge member from being inadvertently deformed. The purpose is to provide a floor structure that can be used.

[0005]

In order to achieve the above object, an upper floor 2 is extended at an end portion of a lower floor 1 through a vertical wall 21, and the upper floor 2 is provided at a boundary portion between the lower floor 1 and the upper floor 2. A vehicle in which a cross-section closed space S having a vertical wall 21 and a facing wall 11 facing the vertical wall 21 is provided, and a seat 3 is pivotally attached to the vertical wall 21 via a hinge member 4 so as to be swingable. In the floor structure of claim 1, the invention according to claim 1 is configured such that, in the closed space S, a first reinforcing piece 61 that overlaps with the vertical wall 21 and the upper floor 2 is bent from an upper end of the first reinforcing piece 61. Reinforcement 6 having a U-shaped cross section, which includes a second reinforcing piece 62 that overlaps with the lower surface of the first reinforcing piece 63, and a third reinforcing piece 63 that is bent from the lower end of the first reinforcing piece 61 and is joined to the facing wall 11. Assemble the vertical wall 2
The hinge member 4 is fixed to the overlapping portion between the first reinforcing piece 61 and the first reinforcing piece 61, and the invention according to claim 2 is characterized in that the hinge member 4 is overlapped with the vertical wall 21 and the first reinforcing piece 61. In addition to the above portion, it is also fixed to the overlapping portion of the upper floor 2 and the second reinforcing piece 62.

[0006]

According to the first aspect of the present invention, even if a large forward force is applied to the hinge member 4 due to a forward load applied to the seat 3 erected on the lower floor 1, the vertical wall 21
The third reinforcing piece 63 of the reinforcement 6 that is installed between the counter wall 11 and the opposite wall 11 serves as a so-called strut against the kneading force and prevents the vertical wall 21 from being deformed. .

According to the second aspect of the present invention, the hinge member 4 is provided not only at the overlapping portion of the vertical wall 21 and the first reinforcing piece 61 but also at the overlapping portion of the upper floor 2 and the second reinforcing piece 62. By fixing, the supporting rigidity of the seat 3 is enhanced, and even when a forward load is applied to the rear seat 3 when the rear seat 3 is erected, a load applied to the hinge member 4 is applied between the vertical wall 21 and the upper floor. Received in a distributed manner.

[0008]

1 and 2 show a floor behind a passenger compartment of an automobile, which is a lower floor 1
And a lower floor panel 10 that forms an upper floor 2 that is one step higher than the lower floor 1 at the rear of the lower floor 1 and that extends diagonally downward to the front end of the upper floor panel 20. The bending vertical wall 21 is integrally formed, and below the front end portion of the upper floor panel 20, the facing wall 11 facing the vertical wall 21 with a predetermined gap is provided, and the facing wall 11 is bent forward from the lower end of the facing wall 11. A lower floor cross member 13 extending in the vehicle width direction having a front wall of the upper floor panel 20 and a bottom wall 12 facing the front wall with a predetermined gap is disposed, and the lower end of the vertical wall 21 and the bottom wall 12 are disposed. The front end of the lower floor panel and the rear end of the lower floor panel by welding, and the upper end of the opposing wall 11 by welding to the lower surface of the upper floor panel 20. The vehicle width direction defined by the opposing wall 11 and the bottom wall 12 of the lower floor cross member 13 and the front end portion of the upper floor panel 20 and the vertical wall 21 at the boundary between the lower floor 1 and the upper floor 2. A closed space S having a rectangular cross section is provided.

And, in the front part on the upper floor 2,
The lower end of the seat back 32 is pivotally attached to the rear end of the seat cushion 31, and the rear seat 3 that allows the seat back 32 to be folded with respect to the seat cushion 31 is arranged. A slide rail 35 that slidably supports the upper rail 34 with respect to the lower rail 33 is disposed to fix the upper rail 34 to the lower surface of the seat cushion 31, and the front end portion of the lower rail 33 is fixed to the vertical wall 21. The rear seat 3 is pivotally mounted via a hinge member 4 to be described later, and is freely swingable between a use position in which the rear seat 3 is placed on the upper floor 2 and an upright position in which the rear seat 3 is erected at a rear portion of the lower floor 1.

The hinge member 4 is fixed to the vertical wall 21 via a bolt 5 and a nut 50.
1, a hinge mail 42 fixed to the lower front end of the seat cushion 31 by a screw (not shown) or the like, and a shaft 43 connecting the hinge mail 42 to the hinge hemel 41 so as to freely swing.

In the above-described floor structure, however, in the embodiment shown in the drawings, a first reinforcing piece 61 that overlaps with the back surface of the vertical wall 21 at the assembly site of the hinge member 4 in the closed space S, A second reinforcing piece 62 that is bent rearward from the upper end of the first reinforcing piece 61 and overlaps the lower surface of the upper floor panel 20, and a diagonally downward direction from the lower end of the first reinforcing piece 61 toward the rear. Bending the opposing wall 1
The reinforcement 6 having a U-shaped cross section, which is composed of a third reinforcing piece 63 joined to the front surface of the vertical wall 21, is attached to the vertical wall 21.
The hinge heme female 41 of the hinge member 4 is fixed to the overlapping portion with the first reinforcing piece 61 in FIG.

Specifically, the first reinforcing piece 61 is superposed on the upper portion on the back side of the vertical wall 21, and the first reinforcing piece 61 is fixed to the vertical wall 21 by spot welding.
The reinforcing piece 62 is superposed on the lower surface of the upper floor panel 20, and the free end portion of the second reinforcing piece 62 is interposed between the upper floor panel 20 and the upper end portion of the facing wall 11, The upper floor panel 20, the upper end of the opposing wall 11 and the free end of the second reinforcing piece 62 are fixed by spot welding, while the third reinforcing piece 63 is closed.
The free end portion is fixed to the lower end portion of the opposing wall 11 by spot welding while being traversed in the front-rear direction.

On the other hand, the hinge hemel 41 of the hinge member 4 is superposed on the upper part of the vertical wall 21 on the front side, and the hinge hemmel 41 is inserted through the bolt 5 and the nut 50 into the vertical wall 21 and the first reinforcing piece 62. In the embodiment shown in the drawings, the lower end of the hinge hemel 41 faces the corner portion of the first reinforcing piece 61 and the third reinforcing piece 63.

Reference numeral 51 in the drawing denotes a bolt insertion hole formed in the vertical wall 21 and the first reinforcing piece 61.

In the above floor structure, in order to use the upper floor 2 as a luggage compartment, the seat back 32 of the rear seat 3 is folded with respect to the seat cushion 31 and is indicated by a chain double-dashed line in FIG. To
The seat cushion 31 is erected on the lower floor 1 through the hinge member 4 together with the seat back 32.

When a rearward load is applied to the rear seat 3 when the rear seat 3 is erected, as shown by the arrow X in FIG. 1, a large crush is caused at the bolt 5 fixing portion of the hinge hemel 41 of the hinge member 4. A force acts so that the lower end portion of the hinge hemel has the vertical wall 21.
The vertical wall 21 is pressed against the side of the facing wall 11 with a very large force by being pressed into contact with the reinforcement 6 that is installed between the vertical wall 21 and the facing wall 11. The third reinforcing piece 63 serves as a so-called strut against the kneading force and prevents the vertical wall 21 from being deformed.

In the above embodiment, the hinge hemel 41 of the hinge member 4 is bolted to the vertical wall 21,
As shown in FIG. 3, the vertical wall 21 and the upper floor panel 2
It may be bolted to the front end of 0.

That is, in the embodiment shown in FIG. 3, the hinge hemel 41 of the hinge member 4 is composed of a first hemel 41a fixed to the vertical wall 21 and a second hemel 41b fixed to the upper floor panel 20. The first hemel 41a on the vertical wall 21 and the first reinforcing piece 61, and the second hemel 41b on the upper floor panel 20.
And the second reinforcing piece 62 to the bolt 5 and the nut 50, respectively.
Fixed through.

Thus, in the embodiment shown in FIG. 3, not only the support rigidity of the seat cushion 31 with respect to the upper floor 2 is increased, but also when a rearward load is applied to the rear seat 3 when the rear seat 3 is erected. However, the load applied to the hinge member 4 can be dispersed and received by the first hemel 41a and the second hemel 41b,
Moreover, since the third reinforcing piece 63 of the reinforcement 6 that is provided between the vertical wall 21 and the facing wall 11 serves as a bulge, the vertical wall 21 is more reliably prevented from being deformed. It can be stopped.

[0020]

As described above, according to the invention as set forth in claim 1, a forward load is applied to the seat 3 erected on the lower floor 1 through the hinge member 4 so that the hinge member 4 is supported. Even when a large kneading force is applied, the third reinforcing piece 63 of the reinforcement 6 that is installed between the vertical wall 21 and the opposing wall 11 acts as a so-called bulge against the kneading force. Since it plays a role of, the deformation of the vertical wall 21 can be prevented.

According to the invention of claim 2, the vertical wall 2
In addition to the overlapping portion of the first reinforcing piece 61 and the first reinforcing piece 61, the hinge member 4 is fixed to the overlapping portion of the upper floor 2 and the second reinforcing piece 62, thereby achieving the effect of the invention of claim 1. In addition, the supporting rigidity of the seat 3 is increased, and the load applied to the hinge member 4 is applied to the vertical wall 21 and the upper floor even when a forward load acts on the rear seat 3 when the rear seat 3 is erected. It can be distributed and accepted.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of a vehicle floor structure according to the present invention.

FIG. 2 is a schematic perspective view of the same.

FIG. 3 is a sectional view of essential parts showing another embodiment of the vehicle floor structure according to the present invention.

[Explanation of symbols]

 1 Lower Floor 11 Opposing Wall 2 Upper Floor 21 Vertical Wall 3 Sheet 4 Hinge Member 6 Reinforcement 61 First Reinforcing Piece 62 Second Reinforcing Piece 63 Third Reinforcing Piece

Claims (2)

[Claims] 1. A vertical wall (21) at the end of the lower floor (1).
An upper floor (2) is extended through the upper floor (2), and the vertical wall (21) and a facing wall (11) facing the vertical wall (21) are provided at a boundary portion between the lower floor (1) and the upper floor (2). In the floor structure of a vehicle, a closed space (S) having a cross section is provided, and a seat (3) is pivotally attached to the vertical wall (21) via a hinge member (4). In the closed space (S), the first overlaps with the vertical wall (21).
A reinforcement piece (61) and a second piece bent from the upper end of the first reinforcement piece (61) and superposed on the lower surface of the upper floor (2).
Reinforcement having a U-shaped cross section, comprising a reinforcing piece (62) and a third reinforcing piece (63) which is bent from the lower end of the first reinforcing piece (61) and is joined to the facing wall (11). (6) is assembled, and the vertical wall (21) and the first reinforcing piece (6
A vehicle floor structure, characterized in that the hinge member (4) is fixed to the overlapping portion with (1). 2. The upper floor (2) and the second reinforcing piece (6)
2. The vehicle floor structure according to claim 1, wherein the hinge member (4) is fixed to a portion where the hinge member (4) overlaps with.