JPH115565A - Floor structure of car body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide floor structure of a car body of high safety able to avoid interference of a center pillar with an occupant even in the case that the center pillar is deformed in a car interior inner side by side collision. SOLUTION: A cross member 103 having a mounting part of a rail 105 of a front seat 106, in a car room inner direction from this rail mounting part position, is provided with a crush bead 103a. By having the crush bead 103a thus provided, buckling strength of the cross member 103 is weakened from a reinforcing cross member 104. Accordingly, in the case of generating side collision, a front part of the front seat 106 is moved prior to a rear part, so that interference of a center pillar with an occupant can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body floor structure.

[0002]

2. Description of the Related Art A conventional vehicle floor structure is disclosed in, for example, Japanese Utility Model Laid-Open No. 5-54167.

[0003]

However, in such a conventional vehicle body floor structure, the center pillar is located almost right beside the occupant in the front seat. When deformed inward, the occupant and the center pillar interfere. There was a problem that the installation of the cushioning material between the center pillar and the occupant had an effect on other performances such as comfort and driving operability.

The present invention has been made in view of such a conventional problem. When a side surface of a vehicle body is deformed into a vehicle interior due to a side collision of the vehicle or the like, the front seat front mounting portion is replaced with the rear mounting portion. It is an object of the present invention to solve the above-described problem by moving the front seat back between the center pillar and the occupant by rotating the seat body toward the interior of the vehicle by moving the seat body to the interior of the vehicle earlier than the vehicle. .

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a center pillar which is formed in a closed cross-section by a pillar inner and a pillar outer to form a body vertical frame member, a side sill inner and a side sill outer. A side sill formed in a closed section at the lower part of the center pillar and extending in the front-rear direction of the vehicle body, a floor, and affixed to the floor in front of the center pillar position, and an outer end to the side sill; A cross member having an end fixed to the floor tunnel portion and a front mounting portion for the front seat formed thereon; and a cross member connected and fixed to the floor behind the cross member position and near the center pillar position, and an outer end connected to the side sill. In addition, in the floor structure of a vehicle body, the reinforcing cross member having an inner end fixed to a floor tunnel portion, It characterized by being smaller than the reinforcing cross member buckling strength in the vehicle width direction of the member.

The present invention also relates to a vehicle body floor structure comprising a side sill formed of a side sill inner and a side sill outer and having a closed cross section and extending below the center pillar in a vehicle longitudinal direction, and a floor. Fixing both ends of the first reinforcing member having a semicircular shape to the side sill,
Both end portions of the second reinforcing member having a substantially semicircular shape are fixed to the floor tunnel portion, the closest points of the first reinforcing member and the second reinforcing member are bonded, and the center of the first reinforcing member is It is characterized in that the reinforcing member is arranged to be offset in the vehicle forward direction from the center of the circle.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle floor structure according to an embodiment of the present invention.

(First Embodiment) A first embodiment of a floor structure of a vehicle body according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a floor structure of a vehicle body according to the first embodiment, FIG. 2 is a front view of the first embodiment, and FIG. 3 is a view for explaining the operation of the first embodiment. FIG. 4 is a plan view, and FIG. 4 is a front view for explaining the operation of the first embodiment.

First, the configuration of the first embodiment will be described. As shown in FIGS. 1 and 2, reference numeral 101 denotes a side sill. Reference numeral 102 denotes a floor. A cross member 103 is bonded and fixed to the floor, the outside is fixed to the side sill, and the inside is fixed to the floor tunnel portion. The cross member has a mounting portion for the rail 105 of the front seat, and has a bead 103a that is crushed in the vehicle interior direction from the position of the rail mounting portion. Reference numeral 104 denotes a reinforcing cross member having an outer side fixed to the side sill and an inner side fixed to the floor tunnel portion, and having a rail mounting portion for the front seat. Reference numeral 106 denotes a seat body installed on a seat rail.

Next, the operation of the first embodiment will be described with reference to FIGS. As shown in FIGS. 3 and 4, when an external force acts on the side surface of the vehicle body due to a side collision or the like, the side surface of the vehicle body is deformed into the vehicle interior (FIG. 3A). The vehicle body deformation starts from the outside of the cabin, and the side sill 101 is first crushed (FIG. 3B). Next, the force is transmitted to the cross member 103 and the reinforcing cross member 104, and the crushed bead 103a provided on the cross member 103 causes the cross member to buckle. Due to this buckling, the mounting portion on the side sill side of the front seat rail 105 provided on the cross member 103 moves toward the vehicle interior, so that a moment is generated in the seat body 106, and the seat back rotates toward the vehicle interior. Then, the vehicle moves between the occupant and the side of the vehicle body (FIGS. 3C and 4). Therefore, the buffer between the occupant and the side of the vehicle body such as the center pillar can be reduced.

(Second Embodiment) A second embodiment of the floor structure of a vehicle body according to the present invention will be described with reference to FIGS. FIG. 5 is a perspective view showing a floor structure of a vehicle body according to the second embodiment, FIG. 6 is a front view of the second embodiment, FIG. 7 is a side view of the second embodiment, and FIG. It is a top view for explaining an operation of a 2nd embodiment.

The configuration of the second embodiment will be described. FIG.
As shown in FIG. 7, reference numeral 201 denotes a side sill. 2
02 indicates a floor. 203 is bonded and fixed to the floor,
The cross member has an outer side fixed to the side sill and an inner side fixed to the floor tunnel portion. The cross member has a mounting portion for the rail 205 of the front seat, and has a bead 203a that is crushed in the vehicle interior direction from the position of the rail mounting portion. 2
Reference numeral 04 denotes a reinforcing cross member having an outer side fixed to the side sill and an inner side fixed to the floor tunnel portion, and having a rail mounting portion for a front seat. The joining position of the reinforcing cross member 204 to the floor tunnel is disposed forward of the side sill joining position. A floor tunnel 206 indicates a seat body installed on a seat rail. 207 is side sill 2
11 shows a brace disposed and joined at a position facing the cross member 203 in the reference numeral 01.

Next, the operation of the second embodiment will be described with reference to FIG. As shown in FIG. 8, when an external force acts on the side surface of the vehicle body due to a side collision or the like, the side surface of the vehicle body is deformed into the vehicle interior (FIG. 8A). Body deformation starts from the outside of the cabin,
First, the side sill 201 is crushed. When the side sill is deformed, the brace 207 disposed in the side sill transmits a force to the cross member 203. During this time, the reinforcing cross member 2
No force is transmitted to 04 (FIG. 8B). The cross member 203 to which the force was transmitted from the brace collapses and the bead 203
In a, it buckles. This buckling causes the cross member 20
3, the mounting portion of the front seat rail 205 on the side sill side of the front seat rail 205 moves toward the vehicle interior, so that the seat body 206
, A momentum is generated, and the seat back rotates toward the passenger compartment and moves between the occupant and the side of the vehicle body (FIG. 8).
(C)). Therefore, the buffer between the occupant and the side of the vehicle body such as the center pillar can be reduced.

(Third Embodiment) A third embodiment of the vehicle body floor structure according to the present invention will be described with reference to FIGS. 9 is a perspective view showing the floor structure of the vehicle body according to the third embodiment, FIG. 10 is a front view of the third embodiment, FIG. 11 is a side view of the third embodiment, and FIG. It is a top view for explaining an operation of a 3rd embodiment.

The configuration of the third embodiment will be described. FIG.
As shown in FIG. 11, reference numeral 301 denotes a side sill. 3
02 indicates a floor. Numeral 303 denotes a pipe-shaped reinforcing member 1 having a curvature, both ends of which have a bracket portion,
It is fixed to the side sill 301. 304 has the same shape as the reinforcing material 1 and is fixed to the floor tunnel. The reinforcing member 1 is disposed so that its curved center is offset from the position of the center of the reinforcing member 2, and the reinforcing member 1 and the reinforcing member 2 are bonded at the closest point. Reference numeral 307 denotes a sheet impactor which is fixed to the side sill 301 located near the front portion of the sheet 306 and has a shape which comes into contact with a strong part of the sheet body.

Next, the operation of the third embodiment will be described with reference to FIG. As shown in FIG. 12, when an external force acts on the side surface of the vehicle body due to a side collision or the like, the side surface of the vehicle body is deformed into the vehicle interior (FIG. 12A). The deformation of the vehicle body starts from the outside of the cabin, and first, the side sill 301 is crushed, and the force is transmitted to the reinforcing members 1 and 2. Since the centers of the reinforcements 1 and 2 are offset, the force in the vehicle interior direction is separated into the direction of the center of the reinforcement 2 and the direction perpendicular thereto, and a moment is generated in the reinforcement 1 (FIG. 12). (B)). Since the side sill 301 is rotated by the rotation of the reinforcing member 1, a moment is generated in the seat body 306, and the seat back is rotated toward the passenger compartment and moved between the occupant and the side of the vehicle body. This rotational movement stops when the two reinforcing members and the contact point are on the same line, and generates a reaction force (FIG. 12C). Therefore, the buffer between the occupant and the side of the vehicle body such as the center pillar can be reduced. Further, when the seat impactor 307 installed on the side sill 301 rotates the side sill, the seat body 306 is rotated.
By contacting the front portion of the seat body, the seat body can be more reliably rotated and moved.

[0017]

As described above in detail, according to the present invention, when the external force is applied from the side of the vehicle body and the side of the vehicle body is deformed into the vehicle interior, the front seat front mounting portion becomes the rear mounting portion. The car body floor structure is characterized in that it moves toward the interior of the vehicle earlier than before, so the seat body can be rotated toward the interior of the vehicle to move the front seat back between the center pillar and the occupant. The effect is obtained.

Each of the embodiments has the following effects in addition to the above-mentioned common effects. In the second and third embodiments, since the reinforcing cross members are arranged obliquely, the clearance under the feet of the rear occupant can be secured (FIGS. 7 and 11). In the third embodiment, since the strong part of the seat is moved toward the vehicle interior by the seat impactor, the seat back can be more reliably moved between the center pillar and the occupant.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a floor structure of a vehicle body according to a first embodiment of the present invention.

FIG. 2 is a front view of the first embodiment.

FIG. 3 is a plan view for explaining the operation of the first embodiment.

FIG. 4 is a front view for explaining the operation of the first embodiment.

FIG. 5 is a perspective view showing a floor structure of a vehicle body according to a second embodiment.

FIG. 6 is a front view of the second embodiment.

FIG. 7 is a side view of the second embodiment.

FIG. 8 is a plan view for explaining the operation of the second embodiment.

FIG. 9 is a perspective view illustrating a floor structure of a vehicle body according to a third embodiment.

FIG. 10 is a front view of the third embodiment.

FIG. 11 is a side view of the third embodiment.

FIG. 12 is a plan view for explaining the operation of the third embodiment.

[Explanation of symbols]

 101, 201, 301 Side sill 102, 202, 302 Floor 103, 203 Cross member 103a, 203a Collapse bead 104, 204 Reinforcement cross member 105, 205, 305 Seat rail 106, 206, 306 Seat body 207 Brace 303 Pipe reinforcement 1 304 Pipe reinforcement 2 307 Sheet impactor

Claims (5)

[Claims] 1. A center pillar which is formed in a closed cross section by a pillar inner and a pillar outer and forms a vehicle body vertical frame member, and which is formed in a closed cross section by a side sill inner and a side sill outer and is provided below the center pillar in a vehicle longitudinal direction. The front sill and the floor are joined and fixed to the floor in front of the center pillar position, the outer end is fixed to the side sill, and the inner end is fixed to the floor tunnel portion. And a reinforcing cross member connected and fixed to the floor behind the cross member position and near the center pillar position and having an outer end fixed to the side sill and an inner end fixed to the floor tunnel portion. The buckling strength of the cross member in the vehicle width direction is more than that of the reinforcing cross member. The floor of the vehicle body structure, characterized in that the small. 2. The floor structure of a vehicle body according to claim 1, wherein a crush bead is provided on the cross member to form a strength discontinuous portion. 3. The floor structure for a vehicle body according to claim 2, wherein the crushing strength discontinuous portion of the cross member is formed in a vehicle interior direction more than a seat mounting portion on a side sill side. Construction. 4. The vehicle body floor structure according to claim 1, wherein a brace is provided in a side sill near the cross member. 5. A floor structure of a vehicle body, comprising: a side sill formed of a side sill inner and a side sill outer and having a closed cross section and extending below the center pillar in a longitudinal direction of the vehicle body; The both ends of the first reinforcing member having a fixed to the side sill, the both ends of the second reinforcing member having a substantially semicircular shape are fixed to the floor tunnel portion, the first reinforcing member and the second reinforcing member A floor structure for a vehicle body, wherein a closest point is bonded, and a center of the first reinforcing member is offset from a center of the second reinforcing member in a forward direction of the vehicle.