JP2005170297A - Fuel tank arranging structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To flatten a floor panel disposed under a cabin of a vehicle as much as possible and to sufficiently secure the capacity of a fuel tank arranged under the floor panel. <P>SOLUTION: In the vehicle, the cabin 2 having an entrance 1 on a side face is disposed between a front wheel axle 3 and a rear wheel axle 4, and a plurality of occupant seats including a driver's seat 7a are arranged on the floor panel 5 disposed under the cabin 2. A step where a low floor (recessed insert section 9) of the floor panel 5 having a low installation position and a high floor of the floor panel 5 having a high installation position are disposed adjacently in the vehicle width direction is disposed in at least a part of the floor panel 9. The fuel tank 27 is disposed under the high floor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  A fuel for a vehicle in which a cabin having a side entrance is provided between a front wheel axle and a rear wheel axle, and a plurality of passenger seats including a driver's seat are arranged on a floor panel provided at a lower portion of the cabin. The present invention relates to a tank arrangement structure.

  2. Description of the Related Art Conventionally, as shown in the following Patent Document 1, a vehicle floor structure having a substantially flat floor panel stretched between left and right side sills and a cross member in the vehicle width direction spanned between the left and right side sills. A pair of left and right upper members extending inwardly from the left and right side sills and having their opposite inner ends separated from each other and coupled to the upper surface of the floor panel, and the opposite inner ends of the pair of left and right upper members 2. Description of the Related Art There is known a vehicle floor structure in which the cross member is configured by a lower member coupled to a lower surface of the floor panel so that they are connected to each other via a floor panel.

Further, as shown in Patent Document 2 below, in a vehicle having a cabin between a front wheel axle and a rear wheel axle and having a floor tunnel between a driver seat and a passenger seat, the driver seat and the passenger seat are provided. A bulging portion that bulges the floor panel upward is provided below, and a fuel tank is disposed below the bulging portion, and at least a part of the combustion tank is inserted into the floor tunnel. An arrangement structure of an installed vehicle fuel tank is known.
Japanese Patent Laid-Open No. 10-264863 JP 2000-85382 A

  As shown in Patent Document 1, when a substantially flat floor panel is stretched between the left and right side sills, a fuel tank is disposed below the rear row seats located behind the driver seat and the passenger seat. In addition to being able to position the floor surface in the cabin downward and increasing the foot space and facilitating walk-through, the location of the fuel tank is limited to the rear of the vehicle body Since the fuel tank that increases in weight when the fuel is full cannot be disposed close to the center of gravity of the vehicle, there is a disadvantage that a large moment of inertia is unavoidable when the vehicle turns. In addition, a large step is formed between a rear panel installed above the fuel tank and a floor panel positioned in front of the fuel tank, and a seat rail that supports the rear row seat so that the vehicle body can be moved back and forth is provided on the rear panel and the floor panel. It is difficult to install so as to straddle and there is a problem that the degree of freedom of design is small when utilizing the cabin space.

  On the other hand, as shown in Patent Document 2, the fuel tank is disposed in the bulging portion of the floor panel provided below the front row seat composed of the driver seat and the passenger seat, thereby effectively reducing the space below the front row seat. When configured to be used, it is possible to widen the space in the cabin located other than the front row seats and widen the cargo space accommodation space. However, the floor panel surface of the front row seat and the floor panel surface of the back row seat are divided by the bulging portion, so that flattening of the floor panel is hindered and disposed below the front row seat arrangement portion. If the capacity of the fuel tank is increased, the driver's seat is located above the cabin, and there are problems such as poor ride quality and ride comfort.

  The present invention has been made in view of the above points, and the floor panel provided at the lower part of the cabin of the vehicle is flattened as much as possible, and the capacity of the fuel tank disposed below the floor panel is sufficiently large. The present invention provides a fuel tank arrangement structure for a vehicle that can be secured.

  According to the first aspect of the present invention, a cabin having a doorway on a side surface is provided between a front wheel axle and a rear wheel axle, and a plurality of passengers including a driver's seat on a floor panel provided at a lower portion of the cabin In a vehicle in which seats are arranged, at least one of the floor panels has a stepped portion in which a low floor portion where the floor panel is installed and a high floor portion where the floor panel is installed are adjacent to each other in the vehicle width direction. And a fuel tank is provided below the raised floor.

  According to a second aspect of the present invention, in the fuel tank arrangement structure of the vehicle according to the first aspect, the driver seat arrangement portion of the floor panel is a low floor portion, and the other passenger seat arrangement portion is a high floor portion. Thus, a recessed portion recessed downward is formed in the driver seat placement portion of the floor panel, and a fuel tank is disposed so as to surround a part of the recessed portion.

  According to a third aspect of the present invention, in the fuel tank arrangement structure of the vehicle according to the second aspect, the occupant seat is a front row seat including a driver seat and a passenger seat arranged in parallel at the front of the cabin, and behind the front seat. A tank body portion disposed below the rear row seat, and a front extension portion disposed so as to extend below the front passenger seat. It is formed in an L shape in plan view.

  According to a fourth aspect of the present invention, in the fuel tank arrangement structure for a vehicle according to the second or third aspect, the other passenger seat arrangement portion of the floor panel is formed on a flat surface.

  According to a fifth aspect of the present invention, in the fuel tank arrangement structure for a vehicle according to the fourth aspect, the other occupant seat arrangement portion of the floor panel is inclined rearward.

  According to a sixth aspect of the present invention, in the fuel tank arrangement structure for a vehicle according to any one of the second to fifth aspects, a part of the recessed portion formed in the driver seat arrangement portion of the floor panel is surrounded. An exhaust pipe is disposed between the fuel tank disposed in this manner and the recessed portion.

  The invention according to claim 7 is the vehicle fuel tank arrangement structure according to any one of claims 1 to 6, wherein the cross member extending in the vehicle width direction along the lower surface of the floor panel is provided on the fuel tank. Are arranged so as to cross.

  According to the first aspect of the present invention, by disposing the fuel tank below the elevated floor portion where the floor panel is installed at a high position, it is possible to sufficiently ensure the capacity of the fuel tank, and the floor panel. By arranging the passenger seat in the low floor portion installed at a low position, there is an advantage that a sufficient space can be secured below the passenger seat and the boarding / exiting ability can be effectively improved.

  In the invention according to the second aspect, since the recessed portion is provided in the driver seat arrangement portion of the floor panel, a sufficient space can be secured below the driver seat and the boarding / exiting ability to the driver seat can be effectively improved. In addition, it is possible to improve the comfort of the driver's seat by sufficiently ensuring the degree of freedom in the vertical direction when changing the sitting posture of the driver with respect to the driver's seat, and to surround a part of the recessed portion. By providing the fuel tank, there is an advantage that a sufficient capacity of the fuel tank can be secured.

  In the invention according to claim 3, the tank main body is disposed below the rear row seat installed in the vehicle width direction behind the front row seat, and the front extension portion of the fuel tank is disposed so as to extend below the passenger seat. By providing, sufficient capacity of the fuel tank can be secured. In addition, since the fuel tank that increases in weight when it is full can be disposed close to the center of gravity of the vehicle, there is an advantage that the moment of inertia acting when the vehicle turns can be effectively reduced.

  In the invention according to claim 4, since the floor panel portion excluding the driver seat placement portion, that is, the placement portion of the other passenger seat composed of the passenger seat and the rear row seat is formed on a flat surface, the appropriate position on the other passenger seat placement portion. It is possible to easily install a seat rail and the like, and by effectively using the space below the floor panel where other passenger seats are arranged, the fuel tank etc. Proper arrangement is possible.

  In the invention according to claim 5, the other passenger seat arrangement portion of the floor panel is configured to increase the lower space of the floor panel to the rear portion by inclining the other passenger seat arrangement portion of the floor panel rearward. By increasing the vertical dimension of the rear part of the fuel tank arranged below, the tank capacity can be sufficiently secured, and the floor panel surface located below the other passenger seats consisting of the front passenger seat and the rear row seat is made to be in a front lowered state. By securing the foot space, it is possible to effectively improve the boarding / exiting performance of the other passenger seat.

  In the invention according to claim 6, since the exhaust pipe is disposed between the recessed portion formed in the driver seat arrangement portion of the floor panel and the fuel tank surrounding the part, the floor panel is made as low as possible. There is an advantage that the fuel tank and the exhaust pipe can be easily and properly arranged.

  In the invention according to the seventh aspect, since the cross member is disposed so as to cross over the fuel tank, it is possible to effectively reinforce the installation portion of the fuel tank and improve the strength of the vehicle body against a side collision or the like. There is an advantage that the fuel tank can be stably supported by using the cross member as a fuel tank support member.

  FIGS. 1-6 has shown schematic structure of the vehicle which has the lower vehicle body structure which concerns on embodiment of this invention. In this vehicle, a cabin 2 having a doorway 1 on a side surface is provided between a front wheel axle 3 and a rear wheel axle 4, and a front wheel 3a is driven by an engine (not shown) disposed at the front of the vehicle body. This is a so-called minivan type FF vehicle configured as described above, and a front door 1a and a rear door 1b are installed at the entrance 1 (see FIG. 4). In the lower part of the cabin 2, a floor panel 5 is provided between the left and right side sills 6, and a front row seat 7 consisting of a driver seat 7a and a passenger seat 7b independent from each other is arranged at the front part on the floor panel 5, A rear row seat 8 composed of a bench seat is disposed on the rear side.

  In the front part of the cabin 2 where the front row seats 7 are arranged, a low floor part where the floor panel 9 is installed and a high floor part where the floor panel 9 is installed are adjacent to each other in the width direction of the vehicle body. Are provided (see FIG. 2). Specifically, the floor panel portion on which the driver's seat 7a is arranged (hereinafter simply referred to as the driver's seat arrangement portion) has other passenger seats whose installation height includes the front passenger seat 7b and the rear passenger seat 7b. Is set lower than the installation position of the floor panel portion (hereinafter simply referred to as the “other passenger seat placement portion”), so that a recessed portion 9 that is recessed downward is formed in the driver seat placement portion. The low floor portion is configured by the bottom surface of the entrance portion 9, and the high floor portion is configured by the passenger seat arrangement portion of the floor panel 5.

  The recessed portion 9 is formed in a horizontal plane whose bottom surface is substantially parallel to the ground contact surfaces of the front wheels 3a and the rear wheels 4a, and the portion other than the driver seat placement portion of the floor panel 5, that is, the other passenger seat placement portion is It is formed on a flat surface that is inclined backward and upward over substantially its entire length. On the upper surface of the floor panel 5, a pair of left and right seat rails 10 and 11 for supporting the passenger seat 7b so as to be movable along the longitudinal direction of the vehicle body are installed, and the rear row seat 8 is disposed in the longitudinal direction of the vehicle body. A pair of left and right seat rails 12 and 13 are movably supported along the seat rail. The left seat rail 12 for the rear row seat 8 and the left seat rail 10 for the driver seat 7a are continuously formed by a common rail member. A pair of left and right seat rails 14 and 15 for supporting the driver's seat 7a so as to be slidable in the front-rear direction of the vehicle body are installed on the bottom surface of the recessed portion 9 in the driver seat arrangement portion of the floor panel 5.

  2 and 3, 16 is a steering wheel, 17 is an accelerator pedal, and 18 is a brake pedal. On the floor panel 5, as shown by phantom lines in FIG. A carpet 19 for the vehicle is installed to cover the portion excluding. The driver's seat 7 a is supported so as to be movable back and forth within the installation range of the recessed portion 9, and the passenger seat 7 b extends from the installation portion of the instrument panel located at the front end portion of the cabin 2 to the central portion of the cabin 2. The rear row seats 8 are supported so as to be movable within the range from the center portion to the rear end portion of the cabin 2.

  Below the floor panel 5 is a No. 2-No. Four cross members 21 to 23 and a rear cross member 24 are installed at a predetermined interval in the front-rear direction of the vehicle body. In addition, the above No. 2 A pair of left and right front frames 25 are installed so as to extend from the installation part of the cross member 21 to the front side of the vehicle body, and rear side frames 26 are installed on the left and right of the rear part of the floor panel 5. Side sills 6 are installed on both sides.

  No. The two cross members 21 include a right side portion 21a disposed along the lower surface of the recessed portion 9 serving as the driver seat arrangement portion, and a left side portion 21b disposed along the lower surface of the floor panel of the passenger seat arrangement portion. And a predetermined step in the vertical direction, that is, a step corresponding to a difference in installation height between a low floor portion formed by the bottom surface of the recessed portion 9 and a high floor portion formed by a floor panel surface of the passenger seat arrangement portion. . Along the rear end surface of the recessed portion 9, No. A three cross member 22 is installed, and a fuel tank 27 is installed along the rear end surface and the inner side surface of the recessed portion 9. No. above. As shown by the solid line in FIG. 6, the 3 cross member 22 is formed in an inverted L-shaped cross section and its front end is joined to the bottom surface of the recessed portion 9, and its rear end is the high floor portion of the floor panel 5. And the right and left flanges (driver's seat arrangement portion), and the front and rear flange portions thereof are joined to the lower surface of the high floor portion of the floor panel 5 as shown by the phantom line in FIG. And a left part (passenger seat arrangement part).

  The fuel tank 27 is No. 3 The tank body 27a is disposed below the rear row seat 8 so as to extend in the vehicle width direction along the rear surface of the cross member 22, and the inner side surface of the recessed portion 9 (the side surface located on the inner side of the vehicle body). A front extension portion 27b disposed below the passenger seat 7b so as to extend along the front side of the vehicle body is formed in an L shape in plan view. And the above-mentioned No. 2-No. A fuel tank 27 is supported by the four cross members 21 to 23, and a fuel supply pipe 29 is connected to a rear wall portion of the fuel tank 27 (see FIG. 5). In addition, on the upper surface of the central portion of the fuel tank 27, No. The recesses 27c corresponding to the three cross members 22 are formed so as to extend in the vehicle width direction. Three cross members are arranged so as to cross over the fuel tank 27.

  Further, below the floor panel 5, there is a front portion 30 a extending from the engine room to the rear side of the vehicle body along the inner surface of the recessed portion 9, and between the rear end surface of the recessed portion 9 and the fuel tank 27. An exhaust pipe 30 having a central portion 30b that is disposed and extends in the vehicle width direction and a rear portion 30c that extends toward the rear side of the vehicle body along the outer surface of the fuel tank 27 is disposed. It is attached to the lower surface of the floor panel 5 via 31.

  As described above, the cabin 2 having the entrance 1 on the side surface is provided between the front wheel axle 3 and the rear wheel axle 4, and a plurality of drivers including a driver's seat 7 a on the floor panel 5 provided at the lower part of the cabin 2. In a vehicle in which passenger seats are arranged, a step portion in which a high floor portion where the floor panel 5 is installed and a low floor portion where the floor panel 5 is installed is adjacent to each other in the vehicle width direction is provided on the floor panel. 5, the fuel tank 27 is disposed below the raised floor where a large space is secured below the floor panel 5, so that the capacity of the fuel tank 27 can be sufficiently secured. In addition, by disposing the occupant seat in the low floor portion where the floor panel 5 is installed at a low position, it is possible to secure a sufficient space below the occupant seat and effectively improve the boarding / exiting performance, etc. There is an advantage.

  For example, as shown in the above embodiment, when the recessed portion 9 provided in the driver seat arrangement portion of the floor panel 5 is a low floor portion and the passenger seat arrangement portion of the floor panel 5 is a high floor portion, A sufficient space can be secured at the foot portion of the driver's seat 7a to easily get on and off the driver's seat 7a, and a sufficient amount of movement in the vertical direction when changing the seating posture of the driver with respect to the driver's seat 7a. For example, the comfortability of the driver's seat 7a can be improved. The fuel tank 27 is disposed so as to cover a part of the recessed portion 9 provided in the driver seat arrangement portion of the floor panel 5, that is, a part of the inner surface and the rear end surface of the recessed portion 9. The large-capacity fuel tank 27 can be efficiently disposed by effectively utilizing a wide space located below the floor panel portion where the passenger seat 7b is disposed.

  In particular, in the above-described embodiment, in the vehicle in which the front row seat 7 including the driver's seat 7a and the passenger seat 7b is arranged in parallel at the front portion of the cabin 2, and the rear row seat 8 is disposed behind the front seat 7, the assistant of the floor panel 5 is provided. The arrangement portion of the seat 7b and the rear row seat 8 is a high floor portion, a tank main body portion 27a constituting the L-shaped fuel tank 27 in a plan view is disposed below the rear row seat 8, and the front extension portion of the fuel tank 27 Since 27b is arranged to extend below the passenger seat 7b, a sufficient capacity can be secured in the fuel tank 27. In addition, since the fuel tank 27 that increases in weight when it is full can be disposed close to the center of gravity located at the center of the cabin 5, the moment of inertia acting when the vehicle turns can be effectively reduced. There is an advantage.

  Although the tank body 27a and the front extension 27b can be formed separately, in this case, a connecting pipe for connecting the tank body 27a and the front extension 27b is required. The structure becomes complicated, and a support member for individually supporting the tank main body 27a and the front extension 27b on the vehicle body is required, and the work of supporting the fuel tank 27 becomes complicated. It is preferable that the L-shaped fuel tank 27 in plan view, in which the portion 27 a and the front extension portion 27 b are integrally connected, be disposed on the high floor portion of the floor panel 5.

  In addition, the fuel tank 27 and the exhaust pipe 30 can be arranged, for example, vertically stacked, but in this case, the installation position of the floor panel 5 is inevitable. For this reason, as shown in the embodiment, the exhaust pipe 30 is disposed between the fuel tank 27 disposed so as to partially surround the recessed portion 9 formed in the driver seat disposition portion and the recessed portion 9. By arranging the fuel tank 27, the fuel tank 27 and the exhaust pipe 30 can be efficiently arranged by effectively using the lower space while suppressing the installation position of the floor panel 5 from being raised as much as possible. It is desirable.

  Further, in the above embodiment, the floor panel portion excluding the driver seat placement portion, that is, the other passenger seat placement portion including the passenger seat 7b and the rear row seat 8 is formed on a flat surface, and thus the cabin 2 corresponding to this other passenger seat placement portion. The seat rails 10 to 13 can be easily installed at appropriate positions on the other occupant seat arrangement portion while ensuring the degree of freedom of design when utilizing the space inside the passenger seat 7b and the rear row seat By effectively using the space below the floor panel portion on which other passenger seats consisting of 8 are arranged, the fuel tank 27 and the exhaust pipe 30 and the like can be easily made while the floor panel 5 is flattened as much as possible and the floor is lowered. And it can arrange | position appropriately.

  Further, as shown in the above-described embodiment, when the other passenger seat arrangement portion of the floor panel 5 is inclined rearwardly upward so that the lower space of the floor panel 5 is increased toward the rear portion, the vehicle body There is an advantage that the tank capacity can be sufficiently secured by increasing the vertical dimension of the rear portion of the fuel tank 27 located on the rear side. In addition, the floor panel surface located below the other passenger seats consisting of the passenger seat 7b and the rear row seat 8 is in a forwardly lowered state to secure a foot space when getting on and off, so that the passenger can easily get on and off the other passenger seats. There is an advantage that you can.

  Furthermore, in the said embodiment, since the bottom face of the recessed part 9 formed in the driver seat arrangement | positioning part of the floor panel 5 was installed horizontally, according to a driver | operator's physique etc., the driver's seat 7a is followed along the guide rails 14 and 15. Even when the vehicle is moved in the front-rear direction, the vertical position of the driver's seat 7a can be prevented from changing, the driving posture can be stabilized, and the driver's seat 7a can be driven in response to moving backward. There is an advantage that it is possible to prevent the distance between the top of the person and the roof portion of the cabin 2 from being reduced.

  That is, the bottom surface of the recessed portion 9 formed in the driver seat arrangement portion of the floor panel 5 can be inclined rearward as in the case of the other passenger seat arrangement portion. As the driver's seat 7a moves up and down in accordance with the movement of the driver's seat 7a in the longitudinal direction of the vehicle body, the steering wheel 16, the accelerator pedal 17, the brake pedal 18, and the seating position of the driver are balanced in the vertical direction. Therefore, the driving posture becomes unstable, and it is inevitable that the distance between the top of the driver and the roof portion of the cabin 2 becomes narrow in response to the driver's seat 7a moving backward.

  On the other hand, when the bottom surface of the recessed portion 9 is horizontally installed as described above, the driver's movement with respect to the steering wheel 16, the accelerator pedal 17, and the brake pedal 18 is not affected even if the driver's seat 7a is moved in the longitudinal direction of the vehicle body. Since the seating height is maintained constant, the driving posture can be stabilized. Moreover, when the driver's seat 7a is moved to the rear side of the vehicle body, in order to prevent the top of the driver from coming into contact with the roof portion, the installation position of the roof portion is made higher than necessary, or the driver's seat is The distance between the top of the driver and the roof of the cabin 2 can be maintained substantially constant without taking measures such as lowering, thereby effectively improving the comfort of the driver's seat 7a. be able to.

  Moreover, in the said embodiment, No. extended in the vehicle width direction along the lower surface of the floor panel 5 is shown. By installing the 3 cross member 22 on the center of the fuel tank 27, the No. 3 cross member 22 is crossed over the fuel tank. Since the three cross members 22 are disposed, the installation portion of the fuel tank 17 is designated as No. 3 above. It is possible to effectively reinforce the vehicle body against side collisions by effectively reinforcing with the 3 cross member 22, and By using the cross member 22 as a support member for the fuel tank 27, the support strength of the fuel tank 27 can be effectively improved.

  Furthermore, as shown in the above-described embodiment, according to the configuration in which the seat rails 10 and 11 that support the passenger seat 7b to be movable to the front end of the cabin 2 along the longitudinal direction of the vehicle are provided on the floor panel 5, When the passenger seat 7b is not used, the passenger seat 7b can be moved to the front end of the cabin 2 to greatly improve the boarding and alighting ability of the rear row seat 8, and the driver seat 7a and the rear row seat 8 There is an advantage that the movement of the occupant between the two can be performed very easily.

  Further, as shown in FIG. 7, the seat cushion 73 is indicated by a solid line with a swing shaft 72 provided on the support member 71 of the passenger seat 7 b as a fulcrum, and substantially vertical indicated by a virtual line. A first vertical use state in which the seat back 75 is indicated by a solid line with the swinging shaft 74 provided on the support member 71 of the passenger seat 7b as a fulcrum, while being selectively displaceably supported in the retracted state; It is good also as a structure supported so that it could selectively displace to the 2nd use condition shown with a virtual line.

  When configured as described above, as shown in FIG. 8, while the seat cushion 73 of the passenger seat 7b is supported in a substantially vertical retracted state, the seat back 75 is supported in a substantially horizontal second use state. By moving the passenger seat 7b to the front end of the cabin 2, a seat back 75 having a larger area than the seat cushion 73 is used as a bed body, and a simple childcare bed using the seat cushion 73 as a protective member. The front passenger seat 7b can be used, and there is an advantage that it is possible to easily perform a diaper changing operation on the infant on the simple bed while the guardian is seated on the rear row seat 8.

  Further, as shown in FIG. 9, the seat cushion 73 of the passenger seat 7 b is supported in a substantially vertical retracted state, and the passenger seat 7 b is mounted on the cabin 2 while the seat back 75 is supported in a substantially vertical first use state. By moving to the front end, it is possible to more effectively improve the boarding and alighting ability of the rear row seat 8. In particular, a storage portion 82 corresponding to the seat cushion 73 of the passenger seat 7b is formed on the instrument panel 81 located at the front end portion of the cabin 2, and the seat cushion 73 is fitted and stored in the storage portion 82. In this case, there is an advantage that the space behind the passenger seat 7b can be further expanded by moving the passenger seat 7b further forward by a distance corresponding to the recessed amount of the storage portion 82.

  In the above embodiment, the seat rails 12 and 13 that support the rear row seat 8 so as to be movable to the rear end of the cabin 2 along the longitudinal direction of the vehicle are provided on the floor panel 5. By moving the rear row seat 8 to the rear end of the cabin 2, the comfort of the rear row seat 8 can be improved effectively. Further, if necessary, the rear row seat 8 is moved to the front side of the vehicle body along the seat rails 12 and 13 so that there is an advantage that the space in the cargo compartment at the rear of the vehicle body can be expanded.

  It should be noted that at least a part of the seat rail that movably supports the passenger seat 7b along the longitudinal direction of the vehicle and the seat rail that movably supports the rear row seat 8 along the longitudinal direction of the vehicle, that is, the left side of the vehicle body Instead of the above-described embodiment in which the seat rails 10 and 12 located on the side are configured by a common rail member, both the seat rails 10 and 12 can be configured separately, but as shown in the above-described embodiment, When both the seat rails 10 and 12 are configured by a common rail member, the number of parts can be reduced to reduce the manufacturing cost, and the installation work of the seat rails 10 and 12 can be simplified. Installation strength can be increased effectively.

1 is a side view showing an embodiment of a fuel tank arrangement structure for a vehicle according to the present invention. It is front sectional drawing which shows the specific structure of the arrangement | positioning part of a front row seat. It is a top view which shows the specific structure of a floor panel. It is a perspective view which shows the specific structure of a floor panel. It is a top view which shows the structure of the lower part of a floor panel. It is side surface sectional drawing which shows the specific structure of a floor panel. It is explanatory drawing which shows the change state of a passenger seat. It is explanatory drawing which shows the state which moved the front passenger seat ahead. It is explanatory drawing which shows the state which stored the passenger seat ahead.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Entrance / exit 2 Cabin 3 Front wheel axle 4 Rear wheel axle 5 Floor panel 7 Front row seat 7a Driver's seat 7b Passenger seat (other passenger seat)
8 back row seats (other passenger seats)
9 Recessed portion 10-15 Seat rail 22 No. 2 Cross members 27 Fuel tank 30 Exhaust pipe

Claims (7)

  In a vehicle in which a cabin having a passenger entrance on a side surface is provided between a front wheel axle and a rear wheel axle, and a plurality of passenger seats including a driver's seat are arranged on a floor panel provided at a lower portion of the cabin, Provided in at least a part of the floor panel is a step portion in which a low floor portion with a low floor panel installation position and a high floor portion with a high floor panel installation position are provided adjacent to each other in the vehicle width direction. A fuel tank arrangement structure for a vehicle, wherein a fuel tank is arranged below the vehicle.   By making the driver seat arrangement part of the floor panel a low floor part and the other passenger seat arrangement part a high floor part, a recessed part recessed downward is formed in the driver seat arrangement part of the floor panel. 2. The fuel tank arrangement structure for a vehicle according to claim 1, wherein a fuel tank is arranged so as to surround a part of the entrance.   The passenger seat is composed of a front row seat consisting of a driver seat and a passenger seat arranged in parallel at the front of the cabin, and a rear row seat disposed behind the passenger seat, and a fuel tank is disposed below the rear row seat. 3. The vehicle fuel according to claim 2, wherein the fuel for the vehicle according to claim 2 is formed in an L-shape in a plan view having a tank main body portion and a front extension portion arranged to extend downward from the passenger seat. Tank arrangement structure.   4. The fuel tank arrangement structure for a vehicle according to claim 2, wherein the other passenger seat arrangement portion of the floor panel is formed on a flat surface.   5. The vehicle fuel tank arrangement structure according to claim 4, wherein the other passenger seat arrangement portion of the floor panel is inclined rearwardly.   3. An exhaust pipe is disposed between a fuel tank disposed so as to surround a part of a recessed portion formed in a driver seat arrangement portion of a floor panel and the recessed portion. The fuel tank arrangement structure for a vehicle according to any one of?   The vehicle according to any one of claims 1 to 6, wherein a cross member extending in the vehicle width direction along the lower surface of the floor panel is disposed so as to cross the installation portion of the fuel tank. Fuel tank arrangement structure.

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