JP4161354B2 - Vehicle body structure - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a vehicle seat device, and more particularly, to a vehicle body structure of a vehicle having a flat floor surface over almost the entire passenger compartment.
[0002]
[Background of the present invention]
In a vehicle body structure in which the engine is arranged at the front part of the vehicle and is driven by the rear wheels, a ridge or tunnel part extending in the front-rear direction is provided in the center part of the passenger compartment in order to arrange the propeller shaft extending in the front-rear direction It is done. On the one hand, this tunnel part also has a role as a structural member for ensuring the rigidity of the vehicle body.
A vehicle body structure having such a tunnel portion is disclosed in, for example, Japanese Patent Laid-Open No. 9-66864.
By the way, in recent years, there has been an increasing demand for a flat floor surface as much as possible while reducing the floor, especially in the design request to make a large cabin space.
[0003]
In this case, in the vehicle body structure disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 9-66864, since a raised portion is formed at the center of the passenger compartment, a wide flat floor surface can be secured in the passenger compartment. Disappear. If the tunnel portion is eliminated in order to secure a wide floor surface, not only the rigidity of the vehicle body can be secured, but also the lowering of the floor cannot be promoted due to the arrangement of the propeller shaft.
[0004]
[Means for Solving the Problems]
The present invention has been made from this point of view, and in a vehicle of a type in which a flat floor surface is formed over almost the entire passenger compartment, a vehicle body capable of providing sufficient vehicle body rigidity while achieving a low floor. The purpose is to provide a structure.
The 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 that is formed flat substantially throughout the vehicle interior,
A pair of side frames arranged to extend in the front-rear direction on both sides of the vehicle;
A seat is mounted on a floor surface corresponding to a plurality of cross members extending in the vehicle width direction of the vehicle and having both ends fixed to the side frame and at least two central cross members arranged in the central portion in the vehicle front-rear direction. A vehicle width direction slide rail for moving in the width direction is laid, and the vehicle width direction slide rail is embedded and laid in a pair of recesses formed to extend in the left-right direction of the floor surface,
Below the concave portion of the floor surface corresponding to the slide rail, the channel-shaped central cross member is located ,
The central cross member has a channel shape, and a concave portion of the floor surface is formed in the channel .
[0005]
Thus, by integrating the vehicle width direction slide rail extending in the vehicle width direction in the same manner as the vehicle width direction slide rail, the vehicle body rigidity, 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 preferably integrated with each corresponding slide rail on the lower surface side of the floor panel. A channel-shaped cross member in the vehicle width direction is disposed so as to form a closed section with the floor panel. The both 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 a closed cross-section structure in which the cross member and the slide rail are integrated with the floor panel sandwiched in the state of being separated in the front-rear direction as described above, the vehicle body rigidity can be provided in place of the tunnel portion of the conventional structure. Can do. That is, according to the present invention, it is possible to achieve a vehicle body structure having a so-called full flat floor surface in which the tunnel portion is eliminated while ensuring sufficient vehicle body rigidity.
[0006]
In this case, the center cross member is preferably longer in the vehicle width direction than the other cross members. By doing so, the rigid member is arranged as close as possible to the side end portion, and even if an impact force is input from the side portion, the influence on the vehicle interior can be reduced. it can.
In another preferred embodiment, a front-rear direction slide rail for moving the seat in the front-rear direction and a vehicle width direction slide rail for moving in the vehicle width direction are provided,
The front-rear direction slide rail is laid above the vehicle width direction slide rail.
By arranging in this way, the integrated structure of the vehicle width direction slide rail and the cross member can be effectively utilized.
[0007]
A connecting member that extends in the vehicle width direction and connects the side frame and the side sill can 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 a middle position in the front-rear direction of the pair of slide rails. By doing so, the rigidity in the vehicle width direction is relatively lower than the inside of the side frame. As a result, when an impact force in the vehicle width direction is input, energy can be absorbed by deforming the connecting member, and the center of the compartment inside the side frame can be protected from the impact.
In a preferred aspect, the central cross member has a larger horizontal width in the cross section than the other cross members.
[0008]
By configuring in this way, it is possible to secure the desired section modulus by reducing the length in the vertical direction as much as possible, and layout properties in the vertical direction on the lower surface side of the floor panel, such as a propeller shaft, exhaust pipe, fuel tank, etc. Interference can be reduced as much as possible. As a result, it is possible to promote lowering the floor while ensuring the desired rigidity.
[0009]
【Example】
Hereinafter, the present invention will be described based on examples.
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 showing an outline of the internal structure of the vehicle.
Referring to FIGS. 1 and 2, an engine room 3 in which an engine 2 is disposed is provided at the front portion of the vehicle 1. The engine room 3 is partitioned from the space of the vehicle compartment 6 by a cowl panel 4 and a 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 almost the entire compartment 6. In the passenger compartment space, a front row seat 8 including a driver seat and an assistant seat is provided at the front, and a handle 9 is positioned corresponding to the driver seat.
[0010]
A central row sheet 10 is disposed behind the front row sheet 8. In the central row sheet 10 of this example, a pair of sheets 10 that can move independently forward and backward and left and right are arranged side by side. Further, a rear row sheet 11 is disposed behind the central row sheet 10. In this example, the back row seat 11 is composed of a bench seat for two people.
The lower structure of the floor panel 7 will be described. 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 the engine power transmitted from the engine 2 to the propeller shaft 13 and transmits the engine power to the rear wheel 14 via the rear wheel axle 16. A pair of side frames 17 extending in the front-rear direction are provided on the side of the vehicle.
[0011]
A spare tire storage device 18 is provided between the wheel bases of the front and rear wheels 12 and 14 in proximity to one side, and a fuel tank is provided on the other side at a position substantially aligned in the front-rear direction. 19 is arranged. In this arrangement, the propeller shaft 13 extends in the front-rear direction between the spare tire storage device 18 and the fuel tank 17. In this case, the propeller shaft 13 extends rearward substantially straight. An exhaust pipe 20 further extends from the rear end of the engine 2. The exhaust pipe 20 includes a catalytic converter 21 for purifying exhaust gas in front of the spare tire, and a silencer 22 as a second large diameter portion and a sub silencer 23 provided immediately before the open end behind the curved portion. I have.
The front end of the side frame 17 is located immediately behind the bumper 24 at the front end of the engine room 3 and extends slightly inward and rearward from this position. Extends slightly outward and rearward. The spare tire storage device 18 is positioned so as to extend straight rearward at the position of the rear end portion. Then, it is refracted slightly inward in front of the rear wheel, passes through the position inside the rear wheel, extends slightly refracted outward in the position on the rear end side of the rear wheel, and then rearward in the rear position of the rear wheel. It extends straight toward. The pair of side frames 17 are coupled by a plurality of cross members 25 to 31 extending in the vehicle width direction at least in the vicinity of the lower part of the passenger compartment.
[0012]
In this example, the cross member 25 is located in front of the front row seat 8, the cross members 26 and 27 are located below the front row seat 8, and the cross members 28 and 29 are located below the center row seat. The cross members 30 and 31 are located substantially below the rear row seat 11.
In this example, connecting members 26a and 27a extending further outward in the vehicle width direction are provided outside the side frames 17 of the cross members 26 and 27. It is connected with a pair of side sills 32 arranged so that it may extend in the direction of order in a part.
In this case, as described above, the front end of the side frame 17 is at a level corresponding to the rear of the bumper 24, and extends straight rearward from the position in the horizontal direction. The side frame 17 curves downward at a position almost past the front wheel 12, and extends in the horizontal direction again at the rear position of the front wheel. After that, it extends straight backward while maintaining almost the same level.
[0013]
Front doors 33 are provided on both sides of the front row seat 8, and side doors 34 are 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 step position of the side door 34.
Each of the seats 8, 10, and 11 is attached to the seat cushion 35 so as to be rotatable with respect to the seat cushion 35, and can be stopped at a predetermined angular position, and is in a completely flat and fully folded state. The seat back 36 is configured to be able to take. Further, each seat is provided with a detachable headrest 37 corresponding to the occupant.
A storage pan 38 is formed at the rear portion of the vehicle 1 so as to be able to store the rear row seat 11 so as to spread downward from the floor surface. The storage pan 20 has a sufficient width in the left-right direction to accommodate the rear row sheet 14 and a depth sufficient to accommodate the rear row sheet 11 in a folded state. In the state where the rear row sheet 11 is stored, the upper opening of the storage pan 38 is closed by forming a surface that is flush with the floor panel 7.
[0014]
In the structure of this example, the front row seat 8 can be slid in the front-rear direction, and the center row seat 10 can be slid back and forth and left and right.
Referring to FIGS. 3 and 4, a perspective view showing the slide rail 39 in the vehicle width direction of the center row seat 10 is shown. The vehicle width direction slide rails are embedded in the floor so as to extend in the left-right direction in parallel in the front-rear direction. The vehicle width direction slide rail 39 is formed with a striker 40 and a lock lever mounting portion 41 for stopping the respective center row seats at predetermined positions in the left-right direction. Although not shown, a hook that engages with the striker 40 and a lock lever that engages with the lock lever mounting portion 41 are provided on the seat side.
[0015]
Further, FIG. 5 shows the relationship between the vehicle width direction slide rail 39 and the front and rear direction slide rail 42 in the form of a schematic diagram. As shown in FIG. 4, front and rear slide rails 42 are integrally attached to the central row seat 10. An engagement hook 43 that is engaged with the vehicle width direction slide rail 39 is fixed below the front and 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. As a result, the left and right center row seats 10 can move in the left-right direction along the vehicle width direction slide rail 39 attached to the vehicle body side.
The vehicle width direction slide rail 39 is embedded and laid in a pair of recesses 7 a formed to extend in the left-right direction of the floor panel 7. Referring also to FIG. 7, the slide rail 39 is constituted by a pair of long panel members having a substantially S-shaped cross section, and this panel member is supported by a support bracket 45 fixed to the floor panel 7 by bolts 46. Has been. The support brackets 45 are arranged at predetermined intervals in the left-right direction, and are fixed to and supported by a horizontal flange portion above the panel member constituting the slide rail 39 on one end side, and the other end side is a floor panel. 7 is fixed by a bolt 46.
[0016]
As shown in FIG. 6, channel-shaped cross members 28 and 29 are positioned below the recess 7a of the floor panel 7 corresponding to the pair of slide rails 39. The cross members 28 and 29 are arranged at both ends. And is coupled to the side frame 17. 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 ensured by using a wide structure. Further, in the structure of the present example, the vehicle width direction slide rail 39 is disposed on the upper surface side of the floor panel 7, and the cross members 28 and 29 are respectively combined at the lower position so that the vehicle An integrated rigid structure extending in the width direction is formed. In this case, the cross members 28 and 29 are coupled to the side frame 17 at both ends, and the side frame 17 is curved outward and extends to the side end of the vehicle body at this portion. It has become. Moreover, since the cross members 28 and 29 are located at substantially the center position in the longitudinal direction of the vehicle body, the torsional rigidity of the vehicle body structure can be effectively increased.
[0017]
Further, as described above, the side frame 17 which is a rigid member is located at a position very close to the side of the vehicle body. Therefore, when an impact force from the side is input to this portion, the impact force is reduced. It can be received by the rigid member, and the influence on the passenger compartment can be eliminated as much as possible.
Further, at the positions corresponding to the cross members 28 and 29, the connecting members 28a and 29a whose outer ends are coupled to the side sills 32 are arranged outside the side frame 17, respectively, so that the side frame 17 is arranged slightly inside. It is possible to solve the problem of rigidity reduction due to being present.
In this case, as another structure, instead of the connecting members 28a and 29a, as shown in FIG. 8, a single connecting member 47 may be arranged at an intermediate position in the front-rear direction of the cross members 28 and 29. .
[0018]
In this structure, the rigidity of the outer side of the side frame 17 is intentionally set to be weaker than the rigidity of the inner side. In this structure, when there is an impact 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 surface of the floor panel 7. Therefore, after the central row sheet 10 is removed, the striker 40 and the lock lever mounting portion slightly protrude upward from the floor panel, so that a substantially flat floor surface is formed.
Further, the vehicle width direction slide rail 39 can move in the front-rear direction along the slide rail 42 by sliding through the guide 35 that engages with the front-rear direction slide rail 42 provided on each seat side. it can. Further, the center row seat 10 disengages the engagement hook 43 attached to the front-rear direction slide rail 32 and the striker 40 provided on the vehicle width direction slide rail 39 to lock the center row seat 10. It can be removed by releasing the lever.
[0019]
Moreover, in the structure of this example, the front row seats 8 can also be attached and detached, and can be attached in the opposite front-rear direction after being removed.
[0020]
【The invention's effect】
As described above, according to the present invention, the floor can be lowered and sufficient vehicle body rigidity can be imparted while ensuring a wide flat floor surface as much 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;
2 is an elevational view showing the structure of the interior of the vehicle interior and the lower part of the vehicle body of the vehicle of FIG. 1. FIG.
FIG. 3 is a perspective view of a center row sheet,
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 cross-sectional view showing the relationship between the longitudinal slide rail and the vehicle width direction slide rail;
FIG. 6 is a cross-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 the 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]
DESCRIPTION OF SYMBOLS 1 Vehicle 2 Engine 3 Engine room 4 Cowl panel 6 Car compartment 7 Floor panel 8 Front row seat 10 Center row seat 11 Rear row seat 20 Exhaust pipe 25-31 Cross member 38 Storage pan.

Claims (5)

A vehicle body structure having a floor surface formed flat over the entire interior of the vehicle,
A pair of side frames arranged to extend in the front-rear direction on both sides of the vehicle;
A seat is mounted on a floor surface corresponding to a plurality of cross members extending in the vehicle width direction of the vehicle and having both ends fixed to the side frame and at least two central cross members arranged in the central portion in the vehicle front-rear direction. A vehicle width direction slide rail for moving in the width direction is laid, and the vehicle width direction slide rail is embedded and laid in a pair of recesses formed to extend in the left-right direction of the floor surface,
The channel-shaped central cross member is located below the concave portion of the floor surface corresponding to the slide rail ,
The vehicle body structure characterized in that the central cross member has a channel shape, and a concave portion of the floor surface is formed in the channel.
Body structure characterized by that. 2. The vehicle body structure according to claim 1, wherein the central cross member is longer in the vehicle width direction than the other cross members. In Claim 1, a front-rear direction slide rail for moving the seat in the front-rear direction and a vehicle width direction slide rail for moving in the vehicle width direction are provided,
The front-rear direction slide rail is laid above the vehicle width direction slide rail. 2. The vehicle body structure according to claim 1, wherein a connecting member extending in a vehicle width direction and connecting the side frame and the side sill is provided at a position offset from an extending direction of the central cross member. 2. The vehicle body structure according to claim 1, wherein the central cross member has a larger horizontal width in the cross section than other cross members.

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