JP2003267268A - Vehicle floor structure - Google Patents

Abstract

(57) [Problem] To provide a vehicle floor structure capable of efficiently transmitting a load applied to a vehicle side surface to an opposite side surface. A center tunnel portion (22) is formed at a center portion of a vehicle floor panel (21) to be protruded along a vehicle front-rear direction.
And side sill portions 23 provided on the left and right edges of the floor panel 21. The side sill portion 23 abuts on the inner side surface 23 d below the upper end edge 23 c of the side sill portion 23 to reduce the side input load. Horizontal transmission members 28, 28 for transmitting to the opposite side sill portion 23 are provided, and the horizontal transmission members 28, 28 are divided into two approximately at the center in the vehicle width direction,
Left and right sides 22a, 22a of center tunnel 22
Respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle floor structure capable of efficiently transmitting a load applied to a vehicle side surface to an opposite side surface.

[0002]

2. Description of the Related Art Conventionally, as a side load transmitting device for a vehicle, there has been known a device disclosed in Japanese Patent Laid-Open No. 11-222088 shown in FIG.

In such a vehicle, seats 3 are provided in the passenger compartment 2 of the vehicle 1. These seats 3
It mainly comprises a seat back portion 4 and a seat cushion portion 5, respectively.

Of these, the seat cushion portion 5 is
It is provided on the floor panel 7 via the rail portion 6 so as to be slidable along the vehicle front-rear direction. On the left and right edges of the floor panel 7, side sill parts 1
7, 17 are provided.

A first reinforcing member 8 and a second reinforcing member 9 are provided inside the seat back portion 4 and the seat cushion portion 5.

The first reinforcing member 8 and the second reinforcing member 9 are located at positions facing the third and fourth reinforcing members 12 and 13 and the fifth reinforcing member 14 provided in the left and right doors 10 and 11, respectively. It is provided.

A load transmission member 16 is provided in the center tunnel portion 15 of the floor panel 7.

Next, the operation of this conventional example will be described.

In the conventional side load transmitting device constructed as above, when a load is input to the left door 10 of the vehicle 1 from the side, the left door 10 moves inward in the vehicle compartment 2.

By the movement of the left door 10, the left door 1
0th third and fourth reinforcing members 12, 13 and fifth reinforcing member 1
4 presses the first and second reinforcing members 8 and 9 of the left seat 3 to generate the first and second reinforcing members 8 and 9 of the left seat 3,
Loads in the directions of arrows b and c are applied to 9, respectively.

This load is transmitted to the load transmitting member 16 in the center tunnel portion 15.

In the load transmitting member 16, the applied load is dispersed in the floor panel 7, and the first and second reinforcing members 8 and 9 of the right seat 3 are further moved by moving in the direction a.
Acting as loads in the directions of the arrows e and f, respectively, and are distributed and transmitted to the third and fourth reinforcing members 12 and 13 and the fifth reinforcing member 14 in the right door 11.

[0013]

However, in such a conventional side load transmitting device, the first reinforcing member 8 is provided inside the seat back portion 4 and the seat cushion portion 5.
And the 2nd reinforcement member 9 is provided.

Therefore, when a load is applied to the side sill portions 17, 17 provided on both left and right edges of the floor panel 7, the heights of the left and right doors 10, 11 are set to be substantially the same. These loads were difficult to be transmitted to the first reinforcing member 8 and the second reinforcing member 9, and the load transmitting efficiency was not good.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a vehicle floor structure capable of efficiently transmitting a load applied to the side surface of the vehicle to the side surface on the opposite side.

[0016]

In order to solve the above-mentioned problems, according to the invention described in claim 1, a center tunnel portion is formed in a central portion of a vehicle floor panel, the central tunnel portion being formed so as to extend along the vehicle front-rear direction, Side sill portions provided on the left and right edges of the floor panel, contacting an inner side surface of the side sill below the upper edge of the side sill portion, and transmitting a side input load to the side sill portion on the opposite side. The vehicle floor structure is characterized in that a transmission structure member is provided, and the transmission structure member is divided into two substantially at the center in the vehicle width direction so as to be respectively coupled to the left and right side surface portions of the center tunnel portion.

According to the first aspect of the present invention configured as above, when a load is applied to the side sill portion from the side surface of the vehicle, the transmission structure member is located below the upper edge of the side sill portion and inside the side sill portion. It comes into contact with the side surface and transmits the side surface input load to the side sill portion on the opposite side.

Therefore, the load applied to the side surface of the vehicle can be efficiently transmitted to the opposite side surface.

According to the second aspect of the present invention, in the side sill portion, the height of the seat side portion facing the seat side portion is higher than the height of the boarding / alighting position in front of the passenger compartment seat. Is set to be high, and the floor structure of the vehicle according to claim 1 is characterized in that the transmission structure member is brought into contact with the inner surface of the seat side portion.

According to a second aspect of the present invention configured as described above, comparison of inner side surfaces of the seat side portion facing the seat side portion is made possible without increasing the height of the side sill at the front and rear position of the passenger compartment seat. Since the transmission structure member is brought into contact with a relatively high position, it is possible to receive the load applied to the relatively high position of the side sill portion from the side of the vehicle.

Therefore, it is possible to set the area of the load input surface to be wide and to efficiently transmit the load applied to the side surface of the vehicle to the opposite side surface without impairing the entry / exitability of the vehicle.

Further, according to a third aspect of the present invention, a lower connecting member for connecting the left and right side surface portions is provided at a lower portion of the center tunnel portion, and the vehicle is provided with the transmission structure member at a front side or a rear side. The vehicle floor structure according to claim 1 or 2, wherein the floor structure is provided so as to overlap with the directional position.

According to a third aspect of the present invention, the lower connecting member for connecting the left and right side surface portions provided at the lower portion of the center tunnel portion is provided with the transmission structure member. Since the transmission structure member is provided so as to overlap with the front and rear positions, even if the transmission structure member is divided into two substantially in the vehicle width direction center,
The load between the right and left side surface portions is transmitted by the lower connecting member and is transmitted to the transmitting structure member located on the opposite side.

Therefore, as in the case where the left and right transmission structural members are directly connected, good load transmission efficiency can be obtained.

Then, according to the fourth aspect,
An upper connecting member for connecting the left and right transmission structure members is provided on an upper portion of the center tunnel portion.
The vehicle floor structure according to any one of the above is characterized.

According to the fourth aspect of the present invention configured as above, the left and right transmission structural members are connected by the upper connecting member provided on the upper portion of the center tunnel portion.

For this reason, the load between the left and right side surface portions of the center tunnel portion is transmitted by the upper connecting member, and the load is substantially the same as the left and right transmitting structural members are directly connected. Transmission efficiency can be obtained.

Further, since the upper connecting member is provided above the center tunnel portion, it does not reduce the closed cross-sectional area in the center tunnel portion.

Moreover, above the center tunnel portion,
Since the transmission structure members divided into two are connected, the load can be directly transmitted to the load transmission member on the opposite side while minimizing the influence on the center tunnel portion.

Therefore, it is possible to obtain a vehicle floor structure having good load transmission efficiency without changing the shape of the center tunnel portion.

According to the fifth aspect of the invention, the side sill portion is formed so as to project upward to a position where it vertically overlaps with door members provided on the left and right sides of the vehicle. A vehicle floor structure according to any one of claims 1 to 4 is characterized.

According to a fifth aspect of the present invention, the side sill portion is formed so as to project upward to a position overlapping with door members provided on the left and right sides of the vehicle in the vertical direction. ing.

Therefore, the load applied to the door member from the side of the vehicle is also transmitted to the transmission structure member via the side sill portion.

As described above, the load can be received not only by the side sill portion but also by the door portion, and the area where the load is input is increased, so that the load transmission efficiency can be further improved. I can.

Then, according to the sixth aspect,
6. The truss component member extending obliquely downward from a position in contact with the inner surface of the side sill to a floor panel base end portion of the center tunnel portion. The vehicle floor structure according to any one of the above is characterized.

According to the sixth aspect of the present invention configured in this way, the truss constituting member extends obliquely downward from the position where it comes into contact with the inner surface of the side sill to the floor panel base end of the center tunnel section. It is extended and forms a truss structure with the floor panel and the like.

Therefore, the load from the side can be transmitted to the floor tunnel portion and the side sill portion on the opposite side as it is, and the load transmission efficiency can be improved.

Further, in the seventh aspect of the present invention, there is provided a surface rigid member which is bridged between the truss constituent member, the floor panel bottom surface portion and the inner side surface of the side sill portion. Is characterized by the floor structure of the vehicle.

According to the seventh aspect of the present invention configured as above, the surface rigid member is bridged between the truss constituent member, the floor panel bottom surface portion, and the inner side surface of the side sill portion. Therefore, further improve the rigidity,
The load transmission efficiency can be improved.

[0040]

BEST MODE FOR CARRYING OUT THE INVENTION Specific embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention.

First, the structure will be described. In the vehicle floor structure of this embodiment, the floor panel 21 of the vehicle 20 is used.
A center tunnel portion 22 is formed at the center of the vehicle width direction so as to extend along the vehicle front-rear direction.

Left and right bottom parts 21 of the floor panel 21
Side sill portions 23, 23 having a closed cross-sectional shape by a side sill inner 23a and a side sill outer 23b are provided on the left and right edges of the a, 21a in the vehicle width direction, respectively.

On the floor panel 21, front seats 26, 26 mainly composed of a seat back portion 24 and a seat cushion portion 25, respectively, are mounted on the floor board 21b by rail portions 27, 27 extending from the vehicle. It is provided so as to be slidable along the front-back direction.

Below the seating section 25,
Round bar-shaped horizontal transmission members 28, 28 whose longitudinal direction extends along the vehicle width direction are provided at an upper position of the floor panel 21 so as to be divided into two substantially at the center in the vehicle width direction.

The horizontal transmission members 28, 28 are integrally provided with abutting flange portions 28a, 28b at both inner and outer ends.

Of these, the abutting flange portions 28b, 28b provided on the outer side are below the upper edges 23c, 23c of the side sill portions 23, 23 via the fixing members 29, 29, and the side sill inner 23a. Inner surface 23
They are in contact with d and 23d, respectively.

The abutting flange portions 28a, 28a provided on the inner side of the center tunnel portion 22 are connected to the left side of the center tunnel portion 22 via a saddle type upper connecting member 30 mounted on the upper portion of the center tunnel portion 22. Right side surface portions 22a, 22a
And is configured to transmit the side input load to the side sill portion 23 on the opposite side.

Further, in the first embodiment, the up-and-down range Q is set in the side sill portion 23 in front of the front seat 26 in the passenger compartment and at a position where the occupant straddles when going up and down.

Then, as compared with the height of the ascending / descending range Q,
The height of the seat side portion R formed at a position facing the side portion of the front seat 26 behind the vehicle with respect to the lifting range Q is:
It is set to be high.

The contact flange portion 28b of the horizontal transmission member 28 is brought into contact with the inner side surface 23d of the side sill portion 23 located on the side portion of the front seat 26 by using the fixing member 29.

Further, in the first embodiment, the side sill portion 23 located on the side portion of the front seat 26 is provided with front door members 31, 31 as door members provided on the left and right sides of the vehicle 20, In the vertical direction, up to the overlapping position,
It is formed so as to project upward, and as shown in FIG. 2, an overlapping portion of a predetermined amount S is formed.

Further, in the first embodiment, the left and right side surface portions 22 are provided below the center tunnel portion 22.
A lower connecting member 32 is provided so as to straddle between a and 22a.

In the lower connecting member 32, the left and right horizontal flange portions 32a, 32a are provided on both left and right side surface portions 22a, 22.
By being fixed to the lower surface portions 22b and 22b of a, the left and right side surface portions 22a and 22a are mounted so as to be connected.

Furthermore, in the first embodiment, the floor panel base end portions 22c, 22 of the center tunnel portion 22 are contacted with the side sill inner side surfaces 23d, 23d.
truss constituent member 3 extending obliquely downward to c
It has 3,33.

The truss constituent members 33 are provided on the left and right sides of the center tunnel portion 22 on the horizontal transmission members 28,
Side sill portion 23, side surface portion 22 of center tunnel portion 22
a and the bottom portion 21a of the floor panel 21 are configured to have a truss structure.

Further, in the first embodiment, the surface rigidity member 34 is hung between the truss forming member 33, the floor panel bottom surface portion 21a, the side sill inner 23b of the side sill portion 23 and the inner side surface 23d. It has been passed and fixed.

The surface rigid member 34 has a substantially triangular shape when viewed from the front, and the peripheral flange portion 34a formed over substantially the entire circumference has the truss constituting member 33, the floor panel bottom surface portion 21a, and It is fixed to the inner side surface 23d.

Further, in the first embodiment, below the seat cushion portion 25, above the floor panel 21, at a predetermined distance from the horizontal transmission members 28, 28, substantially parallel to the vehicle. Round bar-shaped rear horizontal transmission members 128, 128 whose longitudinal direction extends in the width direction are provided in two substantially at the center in the vehicle width direction.

The rear horizontal transmission members 128, 128 are integrally provided with abutting flange portions 128a, 128a at both outer ends thereof, and are located below the upper end edges 23c, 23c of the side sill portions 23, 23. , Are abutted on and fixed to the side sill portions 23, respectively.

Further, the rear horizontal transmission members 128, 12
The divided part of 8 is connected to the upper part of the center tunnel part 22 through a box-shaped upper connecting box member 130.
It is fixed to the center tunnel portion 22 and configured to transmit a side input load to the side sill portion 23 on the opposite side.

Next, the operation of the first embodiment will be described.

In the vehicle floor structure of the first embodiment thus configured, when a load as shown by an arrow G in FIG. 3 is input to the lower portion of the front door member 31, the side sill portion 23 is connected to the vehicle. This load is transmitted from the side surface and input as shown by arrow H.

The horizontal transmission member 28 is located below the upper edge 23c of the side sill portion 23 and is located below the side sill portion 2c.
The side input load is transmitted to the upper connecting member 30 as a load indicated by an arrow J by abutting on the inner side surface 23d of No. 3.

At this time, the truss constituent member 33 disperses the load indicated by the arrow I and transmits the load to the floor panel base end portion 22c of the center tunnel portion 22.

The load indicated by the arrow J is applied to the upper connecting member 3
By 0, a load indicated by an arrow K1 is generated and is transmitted to the horizontal transmission member 28 on the opposite side.

The load indicated by the arrow I is the load indicated by the arrow K2 from the lower surface portion 22b located on the lower surface side of the floor panel base end portion 22c by the lower connecting member 32, and the load of the opposite truss constituent member 33 is indicated by the arrow M. Load and bottom part 21
The load is the arrow L of a and is transmitted to the side sill portion 23 on the opposite side together with the load of the arrow N of the horizontal transmission member 28.

Further, in the first embodiment, as shown by the arrow O in FIG. 3, even if a side load is directly applied to the side sill outer 23a of the side sill portion 23, the bottom surface portion 21
a, the surface rigidity member 34, and the truss constituent member 33 transmit this load to the floor panel base end portion 22c (arrows I and P), and the load of the arrow K2 is applied from the lower surface portion 22b by the lower connecting member 32. By doing so, the load of the arrow M of the opposite truss constituent member 33 and the arrow L of the bottom face portion 21a
Is transmitted to the side sill portion 23 on the opposite side.

Therefore, the load applied to the left side surface of the vehicle 20 can be efficiently transmitted to the opposite right side surface.

Further, as shown in FIG. 1, without increasing the height of the side sill portion 23 in the boarding / alighting range Q in front of the front seat 26 of the passenger compartment, the seat side portion facing the side portion of the front seat 26 is increased. Since the horizontal transmission member 28 is brought into contact with a relatively high position of the inner side surface 23d of R, the load from the side of the vehicle input to the relatively high position of the side sill portion 23 below the front door member 31. Can be accepted.

Therefore, the area of the load input surface is set wide without impairing the entry / exitability of the vehicle, and the load applied to the side surface of the vehicle can be efficiently transmitted to the opposite side surface.

Further, a lower connecting member 32 for connecting the left and right side surface portions 22a, 22a provided at the lower portion of the center tunnel portion 22 with lower surface portions 22b, 22b, and the horizontal transmission members 28, 28 are provided. Since the center tunnel portion 22 is not crushed in the vehicle width direction, the horizontal transmission members 28, 28 are divided into two substantially at the center in the vehicle width direction because they are provided so as to overlap with the front and rear positions of the vehicle. , The left and right side surface portions 22 of the center tunnel portion 22
The load between a and 22a is transmitted by the lower connecting member 32 and is transmitted to the horizontal transmitting member 28 located on the opposite side.

Therefore, as in the case where the left and right horizontal transmission members 28 are directly connected, good load transmission efficiency can be obtained.

The left and right horizontal transmission members 28, 28 are connected by an upper connecting member 30 provided above the center tunnel portion 22.

Therefore, the load between the left and right side surface portions 22a, 22a of the center tunnel portion 22 is transmitted by the upper connecting member 30, and the left and right horizontal transmitting members 28, 28 are directly connected. It is possible to obtain a good load transmission efficiency in the same manner as the above.

Further, since the upper connecting member 30 is provided above the center tunnel portion 22, the closed cross-sectional area inside the center tunnel portion 22 is not reduced.

Moreover, since the horizontal transmission members 28, 28 divided into two are connected at the upper part of the center tunnel portion 22, the horizontal transmission member 28 on the opposite side is minimized while minimizing the influence on the center tunnel portion 22. The load can be directly transmitted to.

Therefore, it is possible to obtain a vehicle floor structure having good load transmission efficiency without changing the shape of the center tunnel portion 22.

Further, the seat side portions R of the side sill portions 23, 23 are formed so as to project upward to a position overlapping with the door members 31, 31 provided on the left and right sides of the vehicle 20 in the vertical direction. ing.

Therefore, the load applied to the door member 31 from the side of the vehicle also passes through the side sill portion 23.
It is transmitted to the horizontal transmission member 28 and the like.

Therefore, the load can be received not only by the side sill portion 23 but also by the door portion 31, and the area where the load is input is increased, so that the load transmission efficiency can be further improved. I can.

The truss component member 33 extends obliquely downward from the position where it abuts the inner side surface 23d of the side sill to the floor panel base end portion 22c of the center tunnel portion 22. A truss structure is formed by the horizontal transmission member 28, the side sill portion 23, the side surface portion 22a of the center tunnel portion 22, and the bottom surface portion 21a of the floor panel 21 on both the left and right sides of the tunnel portion 22.

Therefore, the load from the side can be transmitted to the floor tunnel portion 22 and the side sill portion 23 on the opposite side as it is, and the load transmission efficiency can be improved.

Further, the surface rigid members 34, 34 are hooked between the truss constituting members 33, 33, the floor panel bottom portions 21a, 21a, and the inner side surfaces 23d, 23d of the side sill portions 23, 23. Since it is delivered, the rigidity can be further improved and the load transmission efficiency can be improved.

In the first embodiment, since the horizontal transmission member 28 is arranged between the seat cushion portion 25 and the floor panel 21 bottom portion 21a, the seat back portion 4 is provided as in the conventional case. It is not necessary to provide the first and second reinforcing members 8 and 9 inside the seat cushion portion 5.

Therefore, the degree of freedom in shaping the seat back portion 24 and the seat cushion portion 25 is improved, and the front seat 2
The appearance quality of No. 6 can be made good.

In addition, in the first embodiment, below the seat cushion portion 25, above the floor panel 21, at a predetermined interval with the horizontal transmission members 28, 28, substantially parallel to the vehicle. Round bar-shaped rear horizontal transmission members 128, 128 whose longitudinal direction extends in the width direction are provided in two substantially at the center in the vehicle width direction.

Therefore, even in the rear of the front seat 26, the side load can be transmitted to the side sill 23 on the opposite side with good transmission efficiency, and the area for receiving the load can be increased.

The first embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific configuration is not limited to those of the first embodiment, and the design is within the scope not departing from the gist of the present invention. Even if there are changes, they are included in the present invention.

For example, in the first embodiment, the inner side surface 2 of the side sill portion 23 located on the side portion of the front seat 26.
The horizontal transmission member 28 is brought into contact with the 3d by using the fixing member 29, but the present invention is not limited to this, and in the normal state, the contact flange portion 28b is provided with the inner side surface 23d of the side sill portion 23d. Alternatively, the inner side surface 23d may be brought into contact with the contact flange portion 28b when a side load is input.

Further, inside the front door member 31, a side door beam extending along the vehicle front-rear direction and other strength members are arranged so that the load transmitted to the side sill portion 23 is applied to these side door beams. It may be transmitted via such as.

In this case, since the side load applied to the extension range of the side door beam is also transmitted to the side sill portion 23 on the opposite side with good transmission efficiency, the area of the load input surface is further extended in the vehicle front-rear direction. Can be expanded.

[0093]

As described above, according to the invention of claim 1, when a load is applied to the side sill portion from the side surface of the vehicle, the transmission structure member is located below the upper edge of the side sill portion. Abut the inner surface of the side sill,
The side input load is transmitted to the side sill portion on the opposite side.

Therefore, the load applied to the side surface of the vehicle can be efficiently transmitted to the opposite side surface.

According to the second aspect of the present invention, the inner side surface of the seat side portion facing the seat side portion is relatively high without increasing the height of the side sill in the front and rear position of the passenger compartment seat. Since the transmission structure member is brought into contact with the position, it is possible to receive the load from the side of the vehicle input to the relatively high position of the side sill portion.

Therefore, it is possible to efficiently transfer the load applied to the side surface of the vehicle to the opposite side surface by setting the area of the load input surface to be wide without impairing the entry / exitability of the vehicle.

According to the third aspect of the present invention, the lower connecting member for connecting the left and right side surface portions provided at the lower portion of the center tunnel portion is provided in front of the vehicle provided with the transmission structure member. Since it is provided so as to overlap with the rearward position, even if the transmission structure member is divided into two substantially at the center in the vehicle width direction, the load between the left and right side surface portions of the center tunnel portion is not affected by the lower connection. It is transmitted by the member and transmitted to the transmission structure member located on the opposite side.

Therefore, as in the case where the left and right transmission structural members are directly connected, good load transmission efficiency can be obtained.

Then, according to the fourth aspect,
The left and right transmission structure members are connected by an upper connecting member provided on the upper part of the center tunnel portion.

Therefore, the load between the left and right side surface portions of the center tunnel portion is transmitted by the upper connecting member, and the load is substantially the same as the left and right transmitting structural members are directly connected. Transmission efficiency can be obtained.

Further, since the upper connecting member is provided above the center tunnel portion, the closed cross-sectional area in the center tunnel portion is not reduced.

Moreover, above the center tunnel portion,
Since the transmission structure members divided into two are connected, the load can be directly transmitted to the load transmission member on the opposite side while minimizing the influence on the center tunnel portion.

Therefore, it is possible to obtain a vehicle floor structure with good load transmission efficiency without changing the shape of the center tunnel portion.

According to the fifth aspect of the present invention, the side sill portion is formed so as to project upward to a position overlapping with door members provided on the left and right sides of the vehicle in the vertical direction. .

Therefore, the load applied to the door member from the side of the vehicle is also transmitted to the transmission structure member via the side sill portion.

As described above, the load can be received not only by the side sill portion but also by the door portion, and the area where the load is input is increased, so that the load transmission efficiency can be further improved. I can.

Then, according to the sixth aspect,
The truss constituent member extends obliquely downward from a position in contact with the inner surface of the side sill to a floor panel base end portion of the center tunnel portion, and forms a truss structure together with the floor panel and the like.

Therefore, the load from the side can be transmitted to the floor tunnel portion and the side sill portion on the opposite side as it is, and the load transmission efficiency can be improved.

Further, according to the seventh aspect of the present invention, the surface rigidity member is bridged between the truss constituent member, the floor panel bottom surface portion, and the inner side surface of the side sill portion. Further, it is possible to exert a practically useful effect that the rigidity can be further improved and the load transmission efficiency can be improved.

[Brief description of drawings]

FIG. 1 shows a floor structure of a vehicle according to a first embodiment of the present invention, and is a partial cross-sectional perspective view of a main part.

FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 for explaining the configuration of the vehicle floor structure according to the first embodiment.

FIG. 3 is a cross-sectional view taken along the vehicle width direction of a main part for explaining a load transmission path in the vehicle floor structure according to the first embodiment.

FIG. 4 is a cross-sectional view taken along the vehicle width direction for explaining the configuration of a main part of a conventional vehicle side load transmission device.

[Explanation of symbols]

21 floor panel 22c Floor panel base end 22 Center tunnel section 23,23 Side sill part 23c Upper edge 23d Internal surface transmission structure member 28, 28 Horizontal transmission member 33,33 truss components 34,34 surface rigidity member 30 Upper connection member 32 Lower connection member 31 Front door member (door member) Q lifting range R seat side

Continued front page    (72) Inventor Takayuki Miyatake             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation F term (reference) 3D003 AA05 BB01 CA14 CA15 CA17                       DA17

Claims (7)

[Claims] 1. A center floor portion of a vehicle floor panel, which has a center tunnel portion formed in a bulge along the vehicle front-rear direction, and side sill portions provided on left and right edges of the floor panel. A transmission structure member that abuts the inner side surface of the side sill below the upper edge to transmit a side input load to the side sill portion on the opposite side is provided, and the transmission structure member is divided into two substantially at the center in the vehicle width direction. A floor structure for a vehicle, wherein the floor structure of the vehicle is configured to be coupled to both left and right side surface portions of the center tunnel portion. 2. The height of the seat side portion facing the seat side portion of the side sill portion is set to be higher than the height of the boarding / alighting position in front of the passenger compartment seat. The vehicle floor structure according to claim 1, wherein the transmission structure member is brought into contact with an inner surface of a side portion of the seat. 3. A lower connecting member for connecting the left and right side surface portions is provided at a lower portion of the center tunnel portion so as to overlap with a front and rear position of a vehicle provided with the transmission structure member. The floor structure for a vehicle according to claim 1 or 2. 4. The vehicle according to claim 1, wherein an upper connecting member that connects the left and right transmission structure members is provided on an upper portion of the center tunnel portion. Floor structure. 5. The side sill portion is formed so as to project upward to a position overlapping with a door member provided on the left and right sides of the vehicle in the vertical direction. The floor structure of the vehicle according to any one of the above. 6. The truss component member extending diagonally downward from the position where the transmission structure member abuts the inner surface of the side sill to the floor panel base end portion of the center tunnel portion. 6. The method according to claim 1, wherein
The floor structure of the vehicle according to any one of the above. 7. The floor structure for a vehicle according to claim 6, further comprising a surface-rigid member that is bridged between the truss constituent member, the floor panel bottom surface portion, and the inner side surface of the side sill portion. .