JPH11245847A - Body structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the sufficient body rigidity while attaing the low floor design in a vehicle having a flat floor face throughout the total area of a cabin. SOLUTION: The channel-shaped cross-members 28, 29 are positioned below the recessed parts of a floor panel corresponding to a pair of slide rails, and the cross-members 28, 29 are connected to the side frames 17 on both sides. Whereby a closed section panel structure extending in the lateral direction is formed by the lower face side of the floor panel and the cross-members 28, 29. A car width direction slider rail is mounted on the upper face side of the floor panel 7, and the cross-members 28, 29 are respectively combined with the lower position of the same, whereby the integrated rigid structure extended in the car width direction can be formed. The cross-members 28, 29 are located on the almost central position in the longitudinal direction of the body, so that the torsional rigidity of the body structure can be effectively improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device and, more particularly, to a vehicle body structure of a type having a flat floor surface over substantially the entire cabin.

[0002]

BACKGROUND OF THE INVENTION In a vehicle body structure in which an engine is disposed at a front portion of a vehicle and driven by rear wheels, a ridge extending in a front-rear direction is provided at a center portion of a vehicle compartment in order to dispose a propeller shaft extending in a front-rear direction. A section, ie, a tunnel section, is provided. On the other hand, the tunnel portion also has a role as a structural member for securing the vehicle body rigidity. A vehicle body structure having such a tunnel portion is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-6686.
No. 4 discloses this. By the way, in recent years, in response to a design request to increase the cabin space,
There is a growing demand to secure a flat floor surface as wide as possible while reducing the floor.

In this case, the above-mentioned Japanese Patent Application Laid-Open No. 9-668 is used.
In the vehicle body structure disclosed in Japanese Patent No. 64, a raised portion is formed at the center of the vehicle compartment, so that a wide flat floor surface cannot be secured in the vehicle compartment. If the tunnel portion is eliminated to secure a wide floor surface, not only the rigidity of the vehicle body cannot be ensured, but also the lowering of the floor cannot be promoted due to the arrangement of the propeller shaft.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing, and is intended to provide a vehicle in which a flat floor surface is formed over substantially the entirety of a passenger compartment while reducing the floor level. It is an object of the present invention to provide a vehicle body structure that can provide an appropriate vehicle body rigidity. This object of the present invention can be achieved by a vehicle body structure having the following features. That is, the vehicle body structure of the present invention is a vehicle body structure having a floor surface formed flat over substantially the entire interior of the vehicle, and a pair of vehicles arranged so as to extend in the front-rear direction on both sides of the vehicle. On a floor surface corresponding to a side frame, a plurality of cross members extending in the vehicle width direction of the vehicle and both ends fixed to the side frame, and at least two central cross members arranged at a central portion in the vehicle longitudinal direction. A vehicle width direction slide rail for moving the seat in the vehicle width direction is laid.

[0005] By thus integrating the vehicle width direction slide rail extending in the vehicle width direction as well as the vehicle width direction slide rail, the rigidity of the vehicle body, particularly, the torsional rigidity in the rolling direction can be improved. The floor panel is provided with a pair of vehicle width direction slide rails spaced apart in the front-rear direction on the upper surface side, and the slide panel is integrated with the slide rails on the lower surface side of the floor panel, respectively. A channel-shaped cross member in the vehicle width direction is disposed so as to form a closed section with the floor panel.
These two ends are coupled to a pair of side frames extending in the front-rear direction on the lower surface of the floor panel on the side of the vehicle body. By providing the closed cross-section structure in which the cross member and the slide rail are integrated with the floor panel interposed therebetween in such a state that the vehicle is separated in the front-rear direction, the vehicle body rigidity that replaces the tunnel portion of the conventional structure is provided. Can be. That is, according to the present invention, it is possible to achieve a vehicle body structure having a so-called full flat floor surface without a tunnel portion while securing sufficient vehicle body rigidity.

In this case, it is preferable that the center cross member is longer in the vehicle width direction than the other cross members. By doing so, the rigid member is arranged at a position as close as possible to the side end, and even when an impact force is input from the side, the influence on the vehicle interior can be reduced. it can. In another preferred aspect, a front-rear slide rail for moving the seat in the front-rear direction and a vehicle width-direction slide rail for moving the seat in the vehicle width direction are provided. It is laid above the width direction slide rail. With this arrangement, the integrated structure of the above-described vehicle width direction slide rail and cross member can be effectively utilized.

A connecting member extending in the vehicle width direction and connecting the side frame and the side sill may be provided at a position offset from the direction in which the central cross member extends. For example, one connecting member can be provided at an intermediate position between the pair of slide rails in the front-rear direction. By doing so, the rigidity in the vehicle width direction is relatively lower than the inside of the side frame. Thereby, when an impact force is input in the vehicle width direction, the energy is absorbed by deforming the connecting member,
The center of the vehicle interior inside the side frame can be protected from the influence of impact. In a preferred embodiment, the width of the central cross member in the horizontal direction in the cross section is larger than that of the other cross members.

[0008] With this configuration, a desired section modulus can be secured by minimizing the length in the vertical direction as much as possible, and the vertical panel layout on the lower surface side of the floor panel, such as a propeller shaft, an exhaust pipe, Interference with the fuel tank or the like can be minimized. As a result, it is possible to promote lowering the floor while securing the desired rigidity.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments.
FIG. 1 shows a structure on the lower surface side of a floor panel of a vehicle to which the present invention can be applied, and FIG. 2 is an elevation view schematically showing an internal structure of the vehicle. 1 and 2
Referring to FIG. 1, an engine room 3 in which an engine 2 is arranged is provided at a front portion of the vehicle 1. Engine room 3
Is separated from the space of the cabin 6 by the cowl panel 4 and the dash panel 5. The vehicle 1 of this example is a vehicle 1 of a type classified as a so-called one-box car, and includes a floor panel 7 that forms a flat floor surface over substantially the entire cabin 6. Front row seat 8 consisting of a driver's seat and a passenger's seat at the front in the cabin space
Is provided, and the steering wheel 9 is located corresponding to the driver's seat.

Behind the front row seat 8, the central row seat 1
0 is arranged. In the center row seat 10 of the present example, a pair of seats 10 that can move back and forth and left and right independently of each other are arranged side by side. Further, a rear row seat 11 is disposed behind the center row seat 10. In this example, the back row seat 11 is configured by a bench seat for two people. Describing the lower structure of the floor panel 7, the engine 2 is disposed between the front wheels 12, and a propeller shaft 13 extends rearward from the rear end of the engine 2 through the center of the vehicle.
The rear end of the propeller shaft 13 is connected to a differential device 15 of the rear wheel 14. The differential device 15 distributes engine power transmitted from the engine 2 to the propeller shaft 13 and transmits the power to the rear wheels 14 via the rear wheel axle 16. A pair of side frames 17 extending in the front-rear direction is provided on a side portion of the vehicle.

A spare tire storage device 18 is provided between the wheel bases of the front and rear wheels 12 and 14 in the vicinity of one side, and at a position substantially aligned in the front-rear direction, the other side is provided. , A fuel tank 19 is arranged. In this arrangement, the propeller shaft 13 extends between the spare tire storage device 18 and the fuel tank 17 in the front-rear direction. In this case, the propeller shaft 13 extends almost straight backward. Engine 2
An exhaust pipe 20 further extends from the rear end. Exhaust pipe 2
0 is equipped with a catalytic converter 21 for purifying exhaust gas in front of the spare tire and a second converter behind the curved portion.
And a sub-silencer 23 provided immediately before the open end. The front end of the side frame 17 is located immediately behind the bumper 24 at the front end of the engine compartment 3 and extends substantially inward and rearward from this position. Extends slightly outward and rearward.
The spare tire storage device 18 is located so as to extend straight rearward at the rear end. Then, it refracts slightly inward in front of the rear wheel, passes through the position inside the rear wheel, slightly refracts outward at the rear end side of the rear wheel, and then extends rearward at the rear position of the rear wheel. It extends straight toward. The pair of side frames 17 are connected by a plurality of cross members 25 to 31 extending in the vehicle width direction at least near the lower part of the vehicle compartment.

In the present embodiment, the cross member 25 is located in front of the front row seat 8, and the cross members 26 and 2
7 is located below the front row seat 8 and is a cross member 2.
8 and 29 are located below the central row seat, and the cross members 30 and 31 are located substantially below the rear row seat 11. In this example, the cross members 26 and 2
7, outside the side frame 17, connecting members 26a, 27a extending outward in the vehicle width direction are further provided, and the connecting members are arranged at the side end portions of the vehicle body so as to extend in the front-rear direction. Are connected to a pair of side sills 32 arranged. In this case, side frame 1
As described above, the front end of 7 is at a level corresponding to the rear of the bumper 24, and extends substantially rearward in a substantially horizontal direction from that position. The side frame 17 curves downward at a position substantially past the front wheel 12, and extends in the horizontal direction again at a position behind the front wheel. After that,
It extends straight back almost at that level.

A front door 33 is provided on both sides of the front row seat 8, and a side door 34 is provided at least on the side of the passenger seat. In this example, the spare tire storage device 18 is provided below the floor surface 7 corresponding to the position of the step of the side door 34. The seats 8, 10, and 11 are rotatably mounted on the seat cushion 35 and can be stopped at a predetermined angular position with respect to the seat cushion 35, and are completely flat and completely folded. The seat back 36 is adapted to take a seat back. Further, each seat is provided with a removable headrest 37 corresponding to the occupant. At the rear of the vehicle 1, a storage pan 38 that can store the rear row seats 11 and that extends downward from the floor surface is formed. The storage pan 20 has a width in the left-right direction sufficient to accommodate the rear row seats 14 and a depth sufficient to accommodate the rear row seats 11 in a folded state. When the rear row seats 11 are stored, the upper opening of the storage pan 38 is closed by forming a surface flush with the floor panel 7.

In the structure of the present embodiment, the front row seat 8 can be slid in the front-back direction, and the center row seat 10 can be slid in the front-back and left-right directions. Referring to FIGS. 3 and 4, there is shown a perspective view showing the slide rail 39 of the center row seat 10 in the vehicle width direction. The vehicle width direction slide rails are buried on the floor surface in parallel in the front-rear direction so as to extend in the left-right direction. On the vehicle width direction slide rail 39, a striker 40 and a lock lever mounting portion 41 for stopping each central row seat at a predetermined position in the left-right direction are formed. Although not shown, the striker 40 is provided on the sheet side.
And a lock lever that engages with the lock lever mounting portion 41 are provided.

FIG. 5 shows the relationship between the vehicle width direction slide rail 39 and the front-rear direction slide rail 42 in the form of a schematic diagram. As shown in FIG.
The front and rear slide rails 42 are integrally attached to the respective 0s. An engagement hook 43 that engages with the vehicle width direction slide rail 39 is fixed below the front-rear direction slide rail 42. As shown in FIG. 6, a slide guide 44 that supports the striker 40 that engages with the engagement hook 43 is slidably provided on the slide rail 39 in the vehicle width direction. Thus, the left and right central row seats 10 can move in the left and right direction along the vehicle width direction slide rail 39 attached to the vehicle body. This vehicle width direction slide rail 3
Reference numeral 9 is buried and laid in a pair of recesses 7a formed to extend in the left-right direction of the floor panel 7. FIG.
The slide rail 39 is composed of a pair of long panel members having a substantially S-shaped cross section.
This panel member is supported by a support bracket 45 fixed to the floor panel 7 by bolts 46. The support brackets 45 are arranged at predetermined intervals in the left-right direction, and are fixed at one end to a horizontal flange portion above a panel member constituting the slide rail 39 to support the same, and the other end is a floor panel. 7 is fixed by bolts 46.

As shown in FIG. 6, channel-like cross members 28 and 29 are located below the recesses 7a of the floor panel 7 corresponding to the pair of slide rails 39. 29 is connected to the side frame 17 at both ends. As a result, a closed cross-sectional panel structure extending in the left-right direction is formed by the lower surface side of the floor panel 7 and the cross members 28 and 29. The channel shape of the cross members 28 and 29 is as wide as possible in the horizontal direction and the height in the vertical direction is kept low. That is, in the structure of this example, a desired section modulus is secured by making the structure wide. In the structure of the present example, a vehicle width direction slide rail 39 is disposed on the upper surface side of the floor panel 7, and the cross member 28,
29 are combined to form an integrated rigid structure extending in the vehicle width direction. In this case, the cross members 28 and 29 are joined to the side frame 17 at both ends, and the side frame 17 is bent outward in this portion and extends to the side end of the vehicle body. Has become. Moreover, the cross members 28 and 29
Since the torsion rigidity of the vehicle body structure can be effectively increased since the vehicle body structure is located substantially at the center in the front-rear direction.

Further, as described above, the side frame 17, which is a rigid member, is located very close to the side of the vehicle body. The impact force can be received by the rigid member, and the influence on the vehicle interior can be eliminated as much as possible. Further, at positions corresponding to the cross members 28 and 29,
Since the connecting members 28a and 29a whose outer ends are coupled to the side sill 32 are arranged outside the side frame 17, the problem of rigidity reduction due to the side frame 17 being arranged slightly inside can be solved. it can. In this case, as another structure, this cross member 28 is used instead of the connecting members 28a and 29a as shown in FIG.
A single connecting member 47 may be arranged at an intermediate position in the front-rear direction between the first connecting member 47 and the second connecting member 29.

In this structure, the rigidity on the outside of the side frame 17 is intentionally set weaker than the rigidity on the inside. In this structure, when there is a shock input from the side, the connecting member 47 is deformed while absorbing energy. Therefore, the influence on the vehicle interior inside the side frame 17 can be eliminated as much as possible. Note that the upper end surface of the slide rail 39 is substantially flush with the floor panel 7. Therefore, after the center row seat 10 is removed, a substantially flat floor surface is formed from above the floor panel, with the striker 40 and the lock lever mounting portion projecting slightly upward. In addition, the vehicle width direction slide rails 39 can be moved in the front-rear direction along the slide rails 42 by sliding via the guides 35 that engage with the front-rear direction slide rails 42 provided on the respective seat sides. it can. The center row seat 10 includes an engagement hook 43 attached to the front-rear direction slide rail 32,
The striker 4 provided on the vehicle width direction slide rail 39
By disengaging the lock from the center row seat 10 and releasing the lock lever of the center row seat 10, it can be removed.

Further, in the structure of the present embodiment, the front row seat 8 is also detachable, so that it can be mounted in the opposite direction after being removed.

[0020]

As described above, according to the present invention, it is possible to reduce the floor and to provide sufficient vehicle body rigidity while securing a flat floor surface as wide as possible.

[Brief description of the drawings]

FIG. 1 is a plan view of a lower surface side of a floor of a vehicle body structure to which the present invention can be applied,

FIG. 2 is an elevational view showing a structure of a vehicle interior and a lower part of the vehicle body of the vehicle of FIG. 1;

FIG. 3 is a perspective view of a center row seat,

FIG. 4 is a perspective view of a vehicle width direction slide rail showing a state where a seat is removed,

FIG. 5 is a sectional view showing a relationship between a front-rear direction slide rail and a vehicle width direction slide rail;

FIG. 6 is a sectional view showing an engagement state between a striker for attaching a seat and a slide rail in a vehicle width direction;

FIG. 7 is a plan view showing a mounting state of a vehicle width direction slide rail;

FIG. 8 is a view similar to FIG. 1, showing another example of the vehicle body structure.

[Explanation of symbols]

 Reference Signs List 1 vehicle 2 engine 3 engine room 4 cowl panel 6 vehicle room 7 floor panel 8 front row seat 10 center row seat 11 rear row seat 20 exhaust pipe 25 to 31 cross member 38 storage pan.

Claims (5)

[Claims] 1. A vehicle body structure of a vehicle having a floor surface formed substantially flat over substantially the entire interior of a vehicle, comprising: a pair of side frames arranged to extend in the front-rear direction on both sides of the vehicle; A plurality of cross members extending in the width direction of the vehicle and having both ends fixed to the side frames; and seating the seat on a floor surface corresponding to at least two central cross members arranged at the center in the vehicle longitudinal direction. A vehicle body structure in which a vehicle width direction slide rail for moving in a width direction is laid. 2. The vehicle body structure according to claim 1, wherein the center cross member has a longer length in the vehicle width direction than other cross members. 3. The vehicle according to claim 1, further comprising a front-rear slide rail for moving the seat in the front-rear direction, and a vehicle width-direction slide rail for moving the seat in the vehicle width direction. And a vehicle body structure laid above the slide rail in the vehicle width direction. 4. A connecting member according to claim 1, wherein the connecting member extends in the vehicle width direction and connects the side frame and the side sill.
The vehicle body structure is provided at a position offset from a direction in which the center cross member extends. 5. The vehicle body structure according to claim 1, wherein the width of the central cross member in the horizontal direction in the cross section is larger than that of the other cross members.