JP2008120339A - Body structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body structure of a vehicle with three seats of short overall lengths. <P>SOLUTION: This body structure of the vehicle has the seats 62, 64 and 66 for three persons arranged in line in the vehicle width direction and a luggage compartment in the rear of the seats 62, 64 and 66. The vehicle has a first floor 70 forming a part of a cabin floor, a second floor 76 forming a part of the cabin floor, formed continuously in the rear of the first floor and formed to be higher by a step than the first floor 70, and a third floor 84 formed continuously in the rear of the second floor 76 and formed to be at least a part of a floor of the luggage compartment. The first floor 70 serves as a foot rest part for occupants of the seats for three persons. The seats for three persons are arranged in line in the vehicle width direction on the upper surface 80 of the second floor 76. A fuel tank 34 and/or a battery is arranged in a lower part of the second floor 76. A rear suspension 40 is arranged in a lower part of the third floor 84. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle body structure of a vehicle, and more particularly, to a vehicle body structure of a vehicle having a seat for three persons arranged in the vehicle width direction and a luggage compartment behind these seats.

In recent years, in the automobile industry, there has been a demand for further improvement in fuel efficiency than ever before. For this reason, there is an increasing need for smaller vehicles than in the past.
A vehicle in which front and rear seats are arranged three by three in the vehicle width direction and on which an occupant can ride is known (for example, a vehicle described in Patent Document 1).

JP 2004-066959 A

  Here, in response to the demand for the small vehicle described above, the present inventors have examined a city car (city car) whose purpose of use is specialized for movement by 1 to 3 people in the city. Yes. Furthermore, in such a city riding vehicle, the vehicle body mass is greatly reduced by shortening the overall length to, for example, 3 m or less, and the feasibility of a vehicle with improved fuel efficiency is studied.

  Then, when considering how to mount the occupant within the constraint of shortening the overall length, the present inventors arranged the three seats in the vehicle width direction, and instead, if the rear seat was eliminated, the overall length would be short. Attention was also paid to the possibility of increasing the possibility of a city-riding vehicle having a vehicle interior space that can be comfortably moved for several tens of minutes with a maximum of three passengers, which is considered necessary and sufficient for moving in the city.

  On the other hand, the present inventors have been forced to review the structure of the vehicle body or the layout of each part in order to shorten the overall length more reliably. For example, increasing the lateral width of the vehicle in order to arrange three seats in the vehicle width direction causes a problem that the vehicle weight increases and the handling of the vehicle deteriorates.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a vehicle body structure for a three-seat vehicle having a short overall length.

In order to achieve the above object, according to the present invention, there is provided a vehicle body structure having a seat for three persons lined up in the vehicle width direction and a luggage compartment behind these seats. A first floor forming a part, a second floor forming a part of the passenger compartment floor, continuously formed behind the first floor and formed to be one step higher than the first floor, and the second floor A third floor formed continuously at the rear of the floor and so as to form at least a part of the floor of the luggage compartment, wherein the first floor is a footrest for occupants of seats for three persons The seats for three people are arranged in the vehicle width direction on the upper surface of the second floor, the fuel tank and / or the battery are arranged at the lower part of the second floor, and the rear suspension is arranged at the lower part of the third floor. It is characterized by being arranged.
In the present invention configured as described above, the seats for three persons are arranged on the upper surface of the second floor formed so as to be one step higher than the first floor so as to be arranged in the vehicle width direction. Since the fuel tank and / or the battery are arranged in the lower part of the vehicle, it is possible to effectively use the space above and below the second floor and reduce the total length of the vehicle without greatly reducing the number of passengers on board. .

In the present invention, preferably, either one of the left and right seats of the seats for three persons arranged in the vehicle width direction is a driver seat, and the central seat sandwiched between the left and right seats is a seat. The seat displacement mechanism is supported by the second floor via the displacement mechanism, and the seat displacement mechanism includes a first state in which the seat surface coincides with the seat surfaces of the left and right seats in the vehicle width direction and is continuous. Is displaced from the first state to the second state located rearward and upward.
In the present invention configured as described above, when the occupant is seated in the central seat, the central seat is displaced backward from the first state continuous with the left and right seats and further displaced upward to the second state. Thus, it is possible to effectively prevent the interference between the legs and shoulders with the occupants of the left and right seats. On the other hand, when not seated, the central seat can be set to the first state, and the luggage space at the rear of the seat can be effectively secured. In addition, since the rear suspension is disposed at the lower part of the third floor formed so as to form at least a part of the floor of the luggage compartment, a more compact vehicle can be obtained more effectively.

In the present invention, preferably, the third floor is formed to be one step higher than the second floor, and the central seat is supported by the upper surface of the third floor in the second state. .
In the present invention configured as described above, the center seat is supported by the upper surface of the third floor formed so as to be one step higher than the second floor in the second state, so that the center seat is reliably supported. I can do it.

In the present invention, it is preferable that a floor tunnel portion extending in the vehicle longitudinal direction at the center position in the vehicle width direction is formed on the first floor so as to bulge upward, and an exhaust pipe is disposed below the floor tunnel portion. The second floor is formed with a kick-up portion that rises from the first floor, and a rear portion of the kick-up portion is formed substantially flat as an upper surface portion of the second floor. Is connected to the kick-up portion of the second floor.
In the present invention configured as described above, a portion behind the kick-up portion formed on the second floor is formed substantially flat as an upper surface portion of the second floor, and the rear end portion of the floor tunnel portion is the first top portion. Since it is connected to the kick-up part of the second floor, the upper part of the second floor is used as a footrest for the occupant of the central seat in the second state where the central seat is displaced rearward and higher from the upper part of the second floor. Can be used effectively.

  According to the present invention, it is possible to provide a vehicle body structure for a three-seat vehicle having a short overall length.

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view showing an embodiment of a vehicle body structure of a vehicle of the present invention, FIG. 2 is a side view showing an embodiment of a vehicle body structure of the vehicle of the present invention, and FIG. It is a perspective view which shows a part of vehicle body structure in order to demonstrate the structure of the floor part mainly of one Embodiment.
As shown in FIGS. 1 and 2, the vehicle 1 has wheels 2, and as shown in FIG. 1, a wheel house 4 projects into the vehicle interior on the rear wheel side. Side sills 6 extending in the longitudinal direction of the vehicle body are formed between the front wheels and the rear wheels on the left and right sides of the vehicle. Further, side doors 8 are provided on the left and right sides between the front and rear wheels.

  As shown in FIG. 3, the vehicle 1 includes a dash panel 10, a dash lower panel 12, a side sill 6, an A pillar 14 that extends upward from the left and right sides of the dash lower panel 12, and a B that extends upward from the rear end of the side sill 6. The pillar 16, the C pillar 18, the wheel house 4, the floor portion 20, and the like are included. The configuration of the floor unit 20 will be described later.

  As shown in FIGS. 1 and 2, a front window 22 and an instrument panel (hereinafter referred to as instrument panel) 24 are provided on the front side of the vehicle. A steering column 26 extends from the left side portion of the instrument panel 24, and a steering wheel 28 is attached to the tip portion thereof.

  An exhaust pipe 30 extending in the longitudinal direction of the vehicle body is provided at the lower portion of the floor portion 20 of the vehicle 1, and the exhaust pipe 30 is connected to a silencer 32 extending in the vehicle width direction at a position near the rear edge of the vehicle body. ing. A fuel tank 34 is provided below the floor portion 20, and a filler pipe 36 extends from the fuel tank 34 obliquely upward of the vehicle and outward in the vehicle width direction. It is possible.

A rear suspension 40 is disposed below the floor portion 20. This rear suspension 40 is shown in FIG. As shown in FIG. 4, the rear suspension 40 is a torsion beam suspension, and mainly includes a pivot portion 42 attached to the vehicle body, an arm portion 44 extending between the pivot portion 42 and the wheel, and an intermediate portion between the arm portions. A torsion beam axle 46 extending in the vehicle width direction, a shock absorber 48 and a coil spring 50 extending substantially in the vertical direction as a whole are formed so as to connect the parts.
As shown in FIGS. 1 and 2, the exhaust pipe 30 extending in the longitudinal direction of the vehicle body at the substantially central portion in the vehicle width direction straddles the torsion beam axle 46 in order to prevent interference with the torsion beam axle 46 extending in the vehicle width direction. In this way, it is formed so as to extend upward.

Next, the structure of the floor portion 20 will be described with reference to FIG.
As shown in FIG. 3, the floor unit 20 first has a first floor 70. The first floor 70 extends from the rear edge portion of the dash lower panel 12 to the front edge portion of the kick-up portion 78 of the second floor 76, which will be described later, in the vehicle longitudinal direction, and between the side sills 6 in the vehicle width direction. It extends.

  As shown in FIGS. 1 to 3, the first floor 70 is formed with a floor tunnel 72 extending in the longitudinal direction of the vehicle body at a substantially central position in the vehicle width direction. The floor tunnel 72 is formed to bulge upward, and has a front edge portion connected to the dash lower panel 12 and a rear edge portion connected to the kick-up portion 78. As shown in FIG. 1, the exhaust pipe 30 extends through the inside (lower part) of the floor tunnel 72.

Next, the floor unit 20 includes a second floor 76. The second floor 76 is mainly composed of a kick-up portion 78 and an upper surface portion 80. The kick-up portion 78 is formed so as to be continuous from the first floor 70 and is formed so as to rise upward from the rear edge portion of the first floor 70. The kick-up portion 78 extends between the side sills 6 in the vehicle width direction.
The second floor upper surface portion 80 continuously extends rearward from the upper edge portion of the kick-up portion 78 and is substantially flat. The rear edge portion of the upper surface portion 80 extends to the front edge portion of the kick-up portion 86 of the third floor 84 described later, and extends between the side sills 6 in the vehicle width direction.

  Next, the floor unit 20 includes a third floor 84. The third floor 84 is mainly composed of a kick-up portion 86 and an upper surface portion 88. The kick-up portion 86 is formed so as to rise upward from the rear edge portion of the second floor upper surface portion 80 continuously from the second floor upper surface portion 80. In addition, the third floor upper surface portion 88 continuously extends rearward from the upper edge portion of the kick-up portion 86. The upper surface portion 88 extends to the rear edge portion of the vehicle.

  Here, as shown in FIGS. 1 and 2, a rear side frame 90 extending in the longitudinal direction of the vehicle body is provided at the rear of the vehicle 1, and the kick-up portion 86 is between these rear side frames 90 in the vehicle width direction. It extends to. In the present embodiment, each rear side frame 90 has a front side end portion on the vehicle outer side connected to a rear end portion of each side sill 6 in the vehicle width direction inner side portion.

  Further, the rear side frame 90 has a hat-like shape (not shown) that opens upward, and flange portions (not shown) formed on the left and right sides of the upper portion thereof are arranged in order from the rear in the third floor 88. The frame is coupled to and integrated with the lower surface portions of the kick-up portion 86 and the second floor upper surface portion 80. The pivot portion 42 of the torsion beam 44 described above is fixed to the lower surface portion of the rear side frame 90 via a bracket 43 as shown in FIG.

  Next, with reference to FIG. 1 to FIG. 3 and FIG. FIG. 5 is a perspective view showing one embodiment of the structure of the vehicle of the present invention.

  First, as shown in FIGS. 1 and 5, the vehicle 1 is provided with three seats (seats) 62, 64, 66 arranged adjacent to each other in the vehicle width direction. In the present embodiment, the left seat 62 in the vehicle width direction is a driver seat provided to face the steering wheel 28. Next to the right side, a passenger's central seat (central passenger seat) 64 is provided, and a further right seat 66 in the vehicle width direction is also a passenger seat. The steering system may be provided on the right side in the vehicle width direction, and the right seat 66 may be used as a driver seat. Note that the left seat 62 and the right seat 66 are provided in front of the wheel house 4 at positions that do not interfere with the wheel house 4.

  As shown in FIGS. 1, 2, and 5, these seats 62, 64, 66 are all provided on the upper surface portion 80 of the second floor 76. Therefore, as can be seen from the occupant model shown in FIG. 2, the occupants (represented by the occupant model A and occupant model B) seated in the seats 62, 64, and 66 place their feet on the first floor 70. . In the present embodiment, the occupant B seated on the center passenger seat 64 places his / her feet on the floor tunnel 72 of the first floor 70. The occupant A seated on the left and right seats 62 and 66 is a lower surface portion of the first floor 70 (a flat surface portion below the floor tunnel). As described above, the first floor 70 is formed as a footrest.

  Next, as shown in FIGS. 1 and 2, the fuel tank 34 is disposed below the second floor 76, and the lower space of the second floor 76 is effectively used. In the case of a hybrid vehicle, a battery may be arranged together with such a fuel tank, and in the case of an electric vehicle, a battery may be arranged instead of the fuel tank.

  Next, in the embodiment of the present invention, the space above the third floor 84 and the space behind each seat 62, 64, 66 is a cargo space. On the other hand, the rear suspension 40 and the silencer 32 described above are disposed below the third floor 84, and the lower space of the third floor 84 is effectively used.

For example, the seats 62, 64, 66 arranged in a row in the vehicle width direction are arranged on the second floor 76 higher than the foot floor (first floor 70), and the fuel tank 34 (and / or below) A battery having a shorter overall length can be obtained by effectively using the vehicle interior space and the space below the vehicle body. In this case, for example, there is an advantage that the yaw moment can be reduced by bringing the second floor 76 to the center in the longitudinal direction of the vehicle body.
Furthermore, since the seats 62, 64, and 66 are disposed on the second floor 76 that is higher than the foot floor (the first floor 70), the required height of the seat legs can be reduced. In this case, the weight of the vehicle is also reduced.

Next, the displacement state of the sheet will be described with reference to FIGS. 1, 2, 5 to 8. 6, 7 and 8 are a plan view, a side view and a perspective view corresponding to FIGS. 1, 2 and 5, respectively, and the center seat is shown in FIGS. 1, 2 and 5. It is a figure which shows the state displaced to back and upper 2nd position with respect to 1st position.
In the embodiment of the present invention, the central seat 64 is displaced in the longitudinal direction of the vehicle body and in the vertical direction of the vehicle body. Here, first, the case where the central seat 64 is in the first position (front and lower position, first state) will be described with reference to FIGS. 1, 2, and 5.

  As shown in FIGS. 1, 2, and 5, when the central seat 64 is in the first position, the position of the front edge 64 a of the seat cushion of the seat seat 64 in the longitudinal direction of the vehicle body is determined by the left and right seat seats 62. , 66 coincide with the front edge portions 62a, 66a of the seat cushion. Further, the front edge portions 62a, 64a, 66a of each seat cushion are at the same position as the kick-up portion 78 of the second floor 76 in plan view.

  Similarly, as shown in FIGS. 2 and 5, in the first position, the height of the seat cushion seat surface 64 b of the seat seat is the seat cushion seat surfaces 62 b and 66 b of the left and right seat seats 62 and 66. Is consistent with Similarly, as shown in FIGS. 1 and 5, in the first position, the position of the seat back 64c of the seat is coincident with the seat backs 62c and 66c of the left and right seats 62 and 66.

On the other hand, the seat cushion seat surface 64b and the seat back 64c of the central seat 64 have a width in the vehicle width direction that is greater than the width of the seat surfaces 62b and 66b and the seat backs 62c and 66c of the left and right seat seats 62 and 66. It is getting smaller.
By disposing such a central seat 64 at the first position, for example, when an occupant does not sit on the central seat 64, the capacity of the luggage compartment can be increased. You can also place things in such a central seat.

  In addition, even if the center seat 64 is in the first position, it is possible to dimensionally allow a total of three people to get on the center seat 64 and the left and right seats 62 and 66. On the other hand, in such a case, it is easy to be in a seated state in which the thighs and shoulders are in contact with each other, and even a short movement in the city may not be comfortable. Therefore, when the central seat 64 is in the first position, it is assumed that an adult rides on the left and right seats, baggage is placed in the central seat, and transported goods are placed in the luggage compartment. Even in such a case, a small child can be seated in the central seat.

Next, the case where the center seat 64 is in the second position (rear and upper position, second state) will be described with reference to FIGS.
As shown in FIGS. 6, 7, and 8, when the central seat 64 is in the second position, the position of the front edge 64 a of the seat cushion of the seat seat 64 in the longitudinal direction of the vehicle body is determined by the left and right seat seats 62. , 66 on the rear side of the front edge portions 62a, 66a of the seat cushion. Similarly, as shown in FIGS. 7 and 8, in the second position, the height position of the seat cushion seat surface 64b of the seat seat is the seat cushion seat surface 62b of each of the left and right seat seats 62, 66. It is a high position above the height position of 66b. Similarly, as shown in FIGS. 6, 7, and 8, in the second position, the seat back 64 c of the seat is rearward and upward from the seat backs 62 c and 66 c of the left and right seats 62 and 66. It has become.

  As described above, in the embodiment of the present invention, the central seat 64 is in the first state where the left and right seats 62 and 66 coincide with each other in the plan view, the side view, and the front view. It is configured to be displaceable between the second states behind and above 66. Then, by allowing the central seat 64 to be disposed at a position behind and higher than the left and right seats 62 and 66, specifically, as shown in FIG. Is also located rearward and upward. Therefore, the shoulder and crotch (thigh) interference between the occupant B of the central seat 64 and the occupant A (see FIG. 2) of the driver seat 62 and the passenger seat 66 is avoided not only in the front-rear direction but also in the vertical direction. I can do it. In particular, interference between the thighs can be avoided more reliably.

Further, when the central seat 64 is in such a second position, the occupant B can obtain a view from which the surroundings can be looked around well because the viewpoint is obtained at a higher position in the center of the vehicle body.
As shown in FIG. 7, in such a second position, the occupant B seated in the central seat places his / her feet on the upper surface portion 80 of the second floor 76. That is, the flatly formed second floor upper surface portion 80 can be effectively used as a foot placement portion.

Next, the displacement mechanism of the central seat 64 will be described with reference to FIGS. 9 and 10 are a side view and a perspective view, respectively, showing the displacement mechanism according to the first embodiment of the center seat.
First, as shown in FIGS. 9 and 10, in this embodiment, the center seat 64 is displaced by the link mechanism 100. The link mechanism 100 includes a front link 102 disposed on both the left and right sides of the seat and a rear link 104 disposed on the left and right sides of the seat. One end of each link 102, 104 is rotatably attached to the second floor upper surface 80. The other end is rotatably attached to the seat 64 via a bracket 106 (see FIG. 10) coupled to a seat cushion frame (not shown) of the central seat 64.
The central seat 64 can be displaced between the first position and the second position described above by the link mechanism 100 shown in FIGS.

As shown in FIG. 9, when the center seat 64 is in the first position, the lower surface portion of the seat directly contacts and is supported by the second floor upper surface portion 80.
On the other hand, when the central seat 64 is in the second position, the rear side portion of the lower surface portion of the seat is in contact with and supported by the third floor upper surface portion 88, and the front side portion of the lower surface portion of the seat is It is supported by the link mechanism 100.

  The central seat 64 has a headrest 64d with a pull-out type. When the seat moves upward as in the second position, the headrest 64d is lowered to an appropriate position to interfere with the roof (roof). Can be prevented. Further, when no occupant is seated on the central seat 64, the headrest 64d can be stored to eliminate the feeling of pressure in the passenger compartment.

  In the present embodiment, the center seat 64 is manually displaced by the occupant. However, a spring for assisting the displacement (a torsion bar or a coiled spring) may be incorporated in the link mechanism. . Further, the central seat 64 is fixed to each position by a lock device (not shown) regardless of whether the central seat 64 is in the first position or the second position.

Next, a second embodiment of the displacement mechanism of the central seat 64 will be described with reference to FIGS. 11 and 12. FIG.11 and FIG.12 is the side view and perspective view which respectively show the displacement mechanism by 2nd Embodiment of a center seat.
In the second embodiment, as shown in FIGS. 11 and 12, the central seat 64 has a pair of left and right retractable legs 110 on the front side and a pair of left and right hook members 112 on the rear side. is doing. On the other hand, strikers 116 and 118 are fixed to the second floor upper surface portion 80 and the third floor upper surface portion 88, respectively.
The hook member 112 is formed with a recess that engages with the striker 118. In addition, a hook portion 114 having a concave portion that engages with the striker 116 is formed at the distal end portion of the retractable leg portion 110.

  First, as shown in FIGS. 11 and 12, in the second position, the retractable leg portion 110 is opened to extend downward, and the hook portion 114 at the tip thereof is attached to the second floor upper surface portion 80. It engages with a fixed striker 116. On the other hand, the hook member 112 is adapted to engage with a striker 118 fixed to the third floor upper surface portion 88. With these engagements, the central seat 64 is fixed in the second position.

  On the other hand, in the first position, the retractable leg portion 110 is folded and placed on the second floor upper surface portion 80. On the other hand, the hook member 112 is adapted to engage with a striker 116 fixed to the second floor upper surface portion 80. By this engagement, the central seat 64 is fixed at the first position. In the present embodiment, the displacement of the central seat 64 is manually performed by the occupant.

As a third embodiment, the center seat 64 may be displaced to the first position and the second position by a seat rail and a slider provided from the second floor 76 to the third floor 84.
By any of the displacement mechanisms as described above, the height of the third floor 84 is increased so that the space for the rear suspension 40, the silencer 32, and the spare tire pan (not shown) is secured, and the second floor 76 is provided. The center seat 64 can be directly supported by the third floor 84 by effectively using the third floor 84 formed higher than the first floor. In this way, the vehicle interior space and the vehicle body lower space can be used effectively.

It is a top view which shows one Embodiment of the vehicle body structure of the vehicle of this invention. It is a side view showing one embodiment of the vehicle body structure of the vehicle of the present invention. It is a perspective view which shows a part of vehicle body structure in order to demonstrate the structure of the floor part mainly of one Embodiment of this invention. 1 is a perspective view showing a rear suspension according to an embodiment of the present invention. It is a perspective view showing one embodiment of the structure of the vehicle of the present invention. FIG. 6 is a plan view corresponding to FIG. 1, illustrating a state in which the central seat is displaced to a second position that is rearward and upward with respect to the first position illustrated in FIGS. 1, 2, and 5. FIG. 6 is a side view corresponding to FIG. 2, illustrating a state in which the central seat is displaced to a second position that is rearward and upward with respect to the first position illustrated in FIGS. 1, 2, and 5. FIG. 6 is a perspective view corresponding to FIG. 5, illustrating a state in which the central seat is displaced to a second position that is rearward and upward with respect to the first position illustrated in FIGS. 1, 2, and 5. It is a side view which shows the displacement mechanism by 1st Embodiment of a center seat. It is a perspective view which shows the displacement mechanism by 1st Embodiment of a center seat. It is a side view which shows the displacement mechanism by 2nd Embodiment of a center seat. It is a perspective view which shows the displacement mechanism by 2nd Embodiment of a center seat.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 6 Side sill 20 Floor part 30 Exhaust pipe 34 Fuel tank 40 Rear suspension 46 Torsion beam axle 62, 66 Left-right seat 64 Center seat 62a, 64a, 66a Seat cushion front edge part 62b, 64b, 66b Seat cushion seat surface 62c, 64b, 66c Seat back 70 1st floor 72 Floor tunnel 76 2nd floor 78 Kick-up part 80 Upper surface part 84 3rd floor 86 Kick-up part 88 Upper surface part 100 Link mechanism 102, 104 of front seat and rear side link 110 Retractable legs 112, 114 Hooks 116, 118 Striker A Crew model sitting on the left and right seats B Crew model sitting on the center seat

Claims (4)

A vehicle body structure having a seat for three persons arranged in the vehicle width direction and a luggage compartment behind these seats,
A first floor that forms part of the passenger compartment floor;
A second floor formed as a part of the passenger compartment floor, continuously formed behind the first floor and higher than the first floor;
A third floor formed continuously behind the second floor and formed to form at least a part of the floor of the luggage compartment,
The first floor is a footrest for passengers in the three seats,
The seats for the three people are arranged on the upper surface of the second floor so as to line up in the vehicle width direction,
A fuel tank and / or a battery is disposed at the bottom of the second floor,
A vehicle body structure for a vehicle, wherein a rear suspension is disposed below the third floor. One of the left and right seats of the three seats arranged in the vehicle width direction is the driver seat,
A central seat sandwiched between the left and right seats is supported on the second floor via a seat displacement mechanism,
The seat displacement mechanism includes a first state in which the seat surface coincides with the seat surfaces of the left and right seats in the vehicle width direction and is continuous, and the seat surface is rearward and upward from the first state. The vehicle body structure according to claim 1, wherein the vehicle body structure is displaced between the second state and the second state. The third floor is formed to be one step higher than the second floor,
The vehicle body structure according to claim 2, wherein the central seat is supported by an upper surface of the third floor in the second state. In the first floor, a floor tunnel portion extending in the vehicle longitudinal direction at the center position in the vehicle width direction is formed by bulging upward,
An exhaust pipe is placed at the bottom of this floor tunnel,
On the second floor, a kick-up portion rising from the first floor is formed, and a portion behind the kick-up portion is formed almost flat as an upper surface portion of the second floor,
The vehicle body structure according to claim 2 or 3, wherein a rear end portion of the floor tunnel portion is connected to a kick-up portion of the second floor.

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