JP4742565B2 - Arrangement structure of fuel tank for vehicle - Google Patents

Description

  The present invention relates to a vehicle fuel tank arrangement structure in which a fuel tank is arranged below a floor panel (including a rear floor) that forms a passenger compartment floor.

  2. Description of the Related Art Conventionally, a vehicular fuel tank is generally arranged behind a kick-up portion and below a rear floor. By the way, in a vehicle, it is requested | required to ensure the foot space of the passenger | crew who seated in the rear seat, and to ensure the capacity | capacitance of a fuel tank.

  The above-mentioned occupant's foot space is defined by the front and rear positions of the kick-up portion. However, if the kick-up portion is set at the rear side for the purpose of expanding the foot space, it becomes difficult to secure a sufficient fuel tank capacity. On the contrary, if the kick-up portion is set on the front side for the purpose of increasing the fuel tank capacity, there is a problem that it is difficult to secure a sufficient foot space.

  On the other hand, Patent Document 1 discloses a structure in which a fuel tank is disposed behind a kick-up portion and below a rear floor. The above-described rear floor and a seat cushion for a rear seat disposed on the upper portion of the rear floor are disclosed. Has a protruding portion that protrudes downward, and a recess is formed in the top deck portion of the fuel tank to correspond to the protruding portion. There was a problem that it was difficult to secure the fuel tank capacity.

Further, in Patent Document 2, a seat cushion of a rear seat is attached to the rear floor behind the kick-up portion, the seat cushion is divided into an upper rear seat cushion main body portion and a lower rear seat cushion split portion, and the rear seat is moved forward. Since the rear floor has a recessed part that protrudes downward so that the rear seat cushion split part remains on the rear floor when double-holding, it is assumed that the rear part of the kick-up part and the lower part of the rear floor When the fuel tank is provided, there is a problem that securing of a sufficient capacity of the fuel tank is hindered by the above-described recess.
JP 2001-63389 A Japanese Patent Laid-Open No. 9-86245

  In view of the above, the present invention forms a floor protruding portion that protrudes upward from the general surface of the floor panel in at least a part of the floor panel in the vehicle width direction, and disposes the fuel tank below the general surface of the floor panel. In addition, at least a part of the fuel tank in the vehicle width direction is formed with a tank protruding portion that protrudes upward. The tank protruding portion is disposed in the space formed by the floor protruding portion, and By arranging seats, it is possible to achieve both the passenger's foot space, especially the passenger compartment space, and the fuel tank capacity, especially the dead space at the front lower part of the seat as the passenger's foot space. An object is to provide a vehicle fuel tank arrangement structure that can be used effectively.

The vehicle fuel tank arrangement structure according to the present invention is a vehicle fuel tank arrangement structure in which a fuel tank is arranged below a floor panel forming a passenger compartment floor, wherein the floor panel has a vehicle width direction. A floor projecting portion projecting upward from the general surface of the floor panel is formed on at least a portion of the floor panel, the fuel tank is disposed below the general surface of the floor panel, and at least one of the fuel tanks in the vehicle width direction is disposed. A tank protrusion protruding upward is formed in the section, the tank protrusion is disposed in the space formed by the floor protrusion, and a seat is disposed on the vehicle interior side above the floor protrusion. The floor panel is provided with a kick-up portion with a step formed above,
The floor protrusion is formed behind the kick-up portion, and the general surface of the floor panel is located on both sides in the vehicle width direction of the floor protrusion behind the kick-up portion and is inclined forward. The front part of the seat is attached to the lower front part formed and inclined, the rear part of the seat is attached to the rear upper part, and a fixing bracket is attached to the lower horizontal part of the general surface. Are provided on both sides of the floor protrusion in the vehicle width direction, the front part of the seat is attached to the lower part via the fixing bracket, and the rear side extending in the front-rear direction on both sides of the floor panel. A frame is provided, and a rear cross member for connecting the rear side frame in the vehicle width direction is provided behind the floor protrusion, and the rear of the floor protrusion and the rear cross member are provided. Between the bar in which the supporting portions of the rear seat is provided.

  According to the above configuration, the floor protruding portion that protrudes upward from the general surface of the floor panel is formed, and the tank protruding portion of the fuel tank is disposed in the space formed by the floor protruding portion. Above all, it is possible to achieve both the space for the passenger's feet and the capacity of the fuel tank.

In addition, since the seat is disposed on the vehicle interior side above the floor protrusion, the dead space in the lower front portion of the seat can be effectively used as the foot space of the occupant.
Further, the floor panel is provided with a kick-up portion having a step formed above, and the floor protrusion is formed behind the kick-up portion. Therefore, the tank capacity of the fuel tank can be further expanded.

In addition, the general surface of the floor panel is located on both sides in the vehicle width direction of the floor protrusion at the rear of the kick-up portion , and is inclined to the front. The front part of the seat is attached, and the rear part of the seat is attached to the rear high part.

Thus, since the general surface of the floor panel is located on both sides in the vehicle width direction of the floor protruding portion behind the kick-up portion and is inclined forward, the seats are placed on both side portions of the floor panel in a front view. A space for attaching a member necessary for rotation support (for example, double hold) can be secured, and a floor protruding portion protruding upward in the vehicle width direction can be appropriately formed in the middle portion of the floor panel in front view. . Therefore, it is possible to achieve both the mounting of the seat and the securing of the capacity of the fuel tank.

  In one embodiment of the present invention, the floor protrusion is formed so as to protrude over substantially the entire width in the vehicle width direction, and the tank protrusion in the vehicle width direction of the fuel tank is substantially the entire width in the vehicle width direction excluding the fuel pump mounting portion. It is formed over.

  According to the above configuration, it is possible to secure a better capacity of the fuel tank while securing the foot space of the occupant.

  In one embodiment of the present invention, the fuel tank is disposed only in a lower space behind the kick-up portion.

  According to the above-described configuration, the foot space can be expanded in the front-rear direction and the up-down direction by the arrangement position of the fuel tank.

In one embodiment of the present invention, the seat is attached to a seat support frame having left and right ends attached to the general surface of the floor panel and extending in the vehicle width direction.
According to the above configuration, since the seat is attached to the seat support frame extending in the vehicle width direction, the capacity expansion of the fuel tank can be secured while securing the seat support rigidity.

  According to the present invention, a floor projecting portion projecting upward from the general surface of the floor panel is formed on at least a part of the floor panel in the vehicle width direction, and the fuel tank is disposed below the general surface of the floor panel. In addition, at least a part of the fuel tank in the vehicle width direction is formed with a tank protruding portion that protrudes upward. The tank protruding portion is disposed in the space formed by the floor protruding portion, and Since seats are installed in the vehicle, it is possible to achieve both the passenger's foot space and the fuel tank capacity, especially the interior space, and the dead space at the lower front of the seat is particularly effective as the passenger's foot space. There is an effect that can be used.

The purpose of the passenger compartment is to secure both the passenger's foot space and the fuel tank capacity, and to effectively use the dead space at the front lower part of the seat as the passenger's foot space. In a vehicle fuel tank arrangement structure in which a fuel tank is arranged below a floor panel forming a floor, a floor projecting upward from a general surface of the floor panel in at least a part of the floor panel in the vehicle width direction Forming a projecting portion, disposing the fuel tank below the general surface of the floor panel, and forming a projecting tank projecting portion at least partially in the vehicle width direction of the fuel tank, Is disposed in the space formed by the floor protrusion, and a seat is disposed on the vehicle interior side above the floor protrusion, and the floor panel The kick-up portion stepped upwardly is formed is provided, the floor protrusion rearward of the kick-up portion is formed, the general plane of the floor panels, the floor protrusion at the rear of the kick-up portion The front part of the seat is attached to the front lower part of the slope and the rear part of the seat is attached to the rear high part. A fixing bracket is attached to the lower horizontal portion of the surface, the fixing bracket is provided on both sides in the vehicle width direction of the floor protrusion, and the front portion of the seat is attached to the lower portion via the fixing bracket. cage, on both sides of the floor panel is provided a rear side frames extending in the front-rear direction, the rear of the floor protrusion connecting the rear side frame in the vehicle width direction Riyakurosumen Is provided, it is achieved in structure only provided with the sheet rear support portion between the floor protrusion rearward and the rear cross member.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show a vehicle fuel tank arrangement structure. First, the vehicle body structure will be described with reference to FIGS. 1, 2, and 3.

  At the center of the floor panel 1 (the floor panel on the front side) that forms the passenger compartment floor is formed a tunnel portion 2 that protrudes toward the passenger compartment side and extends in the front-rear direction of the vehicle. A side sill (not shown) having a side sill closed section that extends in the front-rear direction of the vehicle is joined and fixed to the portion by joining the side sill inner and the side shearer.

  Further, a rear floor 4 (rear side floor panel) is integrally or integrally connected to the above-described floor panel 1 via a kick-up portion 3 having a step formed on the upper side. A concave spare tire pan 5 formed in a step-down manner is provided.

  The above-described kick-up portion 3 is inclined to rise in a front-rear and rear-high shape, and a rear floor protruding portion 7 is formed at the upper end of the kick-up portion 3 via a step portion 6 having an L-shaped cross section. By forming a step portion 6 having a minute size between the kick-up portion 3 and the rear floor protruding portion 7, the floor rigidity is improved.

As shown in FIG. 2, the rear floor protruding portion 7 is formed so as to protrude above the left and right general surfaces 8 and 8 of the rear floor 4 and leaves the left and right general surfaces 8 and 8 with a predetermined width. It protrudes over almost the entire width in the width direction.
As shown in FIG. 3, the left and right general surfaces 8, 8 described above are formed to be inclined forward, more specifically, to be inclined in a front-rear and rear-rear height, and the front lower horizontal portion 8a is inclined as shown in FIG. The front portions of the pair of left and right rear seats 9 and 10 are supported, and the rear portion of the rear seats 9 and 10 is supported by the inclined rear high portion 8b via the striker 11.

  That is, a fixed bracket 12 (rear seat support means) is attached to the upper surface of the lower horizontal portion 8a of the general surface 8 as shown in FIGS. 2 and 3, and is movable to the fixed bracket 12 via the support shaft 13. A bracket 14 (rear seat support means) is pivotally supported, and a seat support frame 15 as a rigid member extending in the vehicle width direction is stretched between upper end portions of a pair of left and right movable brackets 14, 14. ing.

  As shown in FIG. 2, the seat support frame 15 is a rigid member that is spaced apart from the rear floor projection 7 and extends in the vehicle width direction above the rear floor projection 7. In this embodiment, the metal square pipe The above-described seat support frame 15 is configured, and both left and right ends thereof are attached to the general surface 8 of the rear floor 4. The seat support frame 15 may be constituted by a hydroformed molded product instead of the metal square pipe.

  On the rear side of the above-mentioned seat support frame 15, another seat support frame 16 that is spaced apart from and extends in parallel with the seat support frame 15 is provided, and the left rear seat 9 is disposed between the front and rear seat support frames 15, 16. A pair of seat slide rails 18, 18 are attached corresponding to the seat cushion 17, and are attached to a pair of seat slide rails 19, 19 corresponding to the seat cushion 17 of the right rear seat 10.

  As shown in FIG. 4, the seat slide rails 18 and 19 include a lower rail 20 formed by joining two members, and an upper rail 21 formed by bending one member, as shown in FIG. The seat slide rails 18 and 19 are attached in parallel to each other in the longitudinal direction of the vehicle. Specifically, each of the lower rails 20 is attached to the front seat support frame 15 and the rear seat support frame 16 is attached to the rear side end of each of the lower rails 20. Is configured to be slidable in the longitudinal direction of the vehicle.

As shown in FIGS. 2 and 3, a seat side frame 22 extending to the rear seat support frame 16 at the lower portion of the seat cushions 17 , 17 is fixed to the outside of the movable bracket 14 described above.

  As shown in FIG. 3, the seat side frame 22 is provided with an engaging portion 23 for engaging the striker 11, and the striker 11 can be attached and detached by a latch (not shown) attached to the engaging portion 23. It is comprised so that it may engage with.

  The pair of left and right rear seats 9 and 10 are each provided with a seat cushion 17 and a seat back 24, and the seat back 24 is independently forward and left with respect to the seat cushion 17 via a reclining knuckle 26 having a reclining support point 25. It is configured to be able to fold down and fold.

  Here, in order to avoid interference with the wheel house, the above-described seat cushion 17 is formed with a recess 17a at the rear rear portion of the vehicle as shown in FIG. Further, in order to avoid the interference between the seat back 24 and the suspension tower and the wheel house, as shown in FIG.

  On the other hand, as shown in FIGS. 1 and 2, a pair of left and right rear side frames 27 and 27 as vehicle body rigid members extending from the kick-up portion 3 to the rear end portion of the rear floor 4 are joined to the lower surfaces of the left and right sides of the rear floor 4. A closed cross section extending in the front-rear direction is formed between the left and right rear side frames 27 and 27 and the rear floor 4, and the space between the left and right rear side frames 27 and 27 is just in front of the spare tire pan 5. And a closed cross section 29 extending in the vehicle width direction is formed between the rear floor 4 and the rear cross member 28 as shown in FIG. Yes.

  5 is a front view showing the fuel tank arrangement structure, FIG. 6 is a bottom view of FIG. 1, and FIG. 7 is a cross-sectional view taken along the line AA of FIG. The fuel tank arrangement structure will be described with reference to FIGS.

  As shown in each of these drawings, the fuel tank 30 is disposed only in the space behind the kick-up portion 3 and below the rear floor 4, and as clearly shown in FIG. A tank projecting portion 30a projecting upward (a portion projecting upward from the general surface 8 in FIG. 5) is integrally formed. That is, the fuel tank 30 has a main body 30b (see a portion below the general surface 8) disposed below the general surface 8 of the rear floor 4, and a tank protrusion 30a that protrudes upward with respect to the main body 30b. And configured to ensure a sufficient tank capacity.

  And this tank protrusion part 30a is arrange | positioned in the space 31 formed of the above-mentioned rear floor protrusion part 7. FIG. In this embodiment, as shown in FIG. 5, the tank protrusion 30a described above is formed over almost the entire width in the vehicle width direction so as to correspond to the inside of the space 31 except for the concave fuel pump mounting portion 30c. It is configured to increase the capacity.

  Further, the fuel tank 30 is supported as shown in FIGS. That is, the bracket 32 is joined to a position in the vicinity of the tunnel portion 2 in the vehicle width direction and across the kick-up portion 3 and the rear floor protruding portion 7 in the vertical direction, and the bracket 32 and the rear cross member 28 described above are joined. The fuel tank 30 is supported using two tank bands 33 and 34 fastened to each other.

  One tank band 33 is detachably fastened to the bracket 32 at its front part, and its rear part is detachably fastened to the end of the rear cross member 28 in the vehicle width direction. The front part is detachably fastened to the bracket 32, and the rear part is detachably fastened to the middle part in the vehicle width direction of the rear cross member 28. The fastening means is fixed to the bracket 32 and the rear cross member 28 by welding in advance. And the bolt 36 screwed into the nut 35 is used.

  Further, the pair of tank bands 33, 34 are combined in a lateral V shape with the rear side opened as viewed from the bottom.

  Further, a support piece 37 is integrally or integrally formed on the right front corner as the side far from the bracket 32 of the fuel tank 30, and the support piece 37 has a mounting member 38 such as a bolt or a nut. It is attached to the protrusion 39 provided on the rear side frame 27 in a detachable manner.

  The tank protrusion 30a of the above-described fuel tank 30 follows the internal shape of the rear floor protrusion 7 as shown in FIG. 8 instead of the side shape shown in FIG. Thus, it may be configured in a convex shape having a predetermined length in the front-rear direction in a side view, and the tank capacity may be further expanded.

  Thus, the vehicle fuel tank arrangement structure of the above-described embodiment is the same as that of the vehicle fuel tank in which the fuel tank 30 is arranged below the floor panel (see the floor panel 1 and the rear floor 4) that forms the passenger compartment floor. A rear floor projecting portion 7 projecting upward from a general surface 8 of the floor panel (see rear floor 4) is formed on at least a part of the floor panel (see rear floor 4) in the vehicle width direction; The fuel tank 30 is disposed below the general surface 8 of the floor panel (see the rear floor 4), and a tank projecting portion 30a projecting upward is formed on at least a part of the fuel tank 30 in the vehicle width direction. The projecting portion 30a is disposed in the space 31 formed by the rear floor projecting portion 7, and the rear seats 9, 10 are disposed on the vehicle interior side above the rear floor projecting portion 7. In which is disposed.

  According to this configuration, the rear floor protrusion 7 protruding upward from the general surface 8 of the floor panel (see the rear floor 4) is formed, and the tank protrusion of the fuel tank 30 is formed in the space 31 formed by the rear floor protrusion 7. Since the 30a is disposed, it is possible to achieve both the securing of the passenger's foot space and the securing of the capacity of the fuel tank 30 as well as the vehicle interior space.

Further, since the rear seats 9 and 10 are disposed on the vehicle interior side above the rear floor protruding portion 7, as shown in FIG. The dead space can be effectively used as the foot space of the passenger.
In particular, even if the kick-up unit 3 is set backward to the position shown by the solid line in FIG. 9 with respect to the conventional kick-up unit α shown in FIG.

  Further, the rear floor protruding portion 7 is formed to protrude over substantially the entire width in the vehicle width direction, and the tank protruding portion 30a in the vehicle width direction of the fuel tank 30 is formed over substantially the entire width in the vehicle width direction except for the fuel pump mounting portion 30c. It is a thing.

  According to this configuration, it is possible to achieve an even better capacity of the fuel tank 30 while securing a foot space for the occupant.

In addition, the floor panel 1 is provided with a kick-up portion 3 having a step formed above, and the rear floor protruding portion 7 is formed behind the kick-up portion 3.
According to this configuration, the rear floor protruding portion 7 described above is located one step higher than the kick-up portion 3, so that the tank capacity of the fuel tank 30 can be further increased.

Moreover, the fuel tank 30 is disposed only in the lower space behind the kick-up portion 3.
According to this configuration, as shown in FIG. 9, the foot space of the rear seat occupant seated on the rear seats 9 and 10 can be expanded in the front-rear direction and the vertical direction by the above-described arrangement position of the fuel tank 30.

  Further, the general surface 8 of the floor panel (see the rear floor 4) is inclined forward, and the front portions of the rear seats 9 and 10 are attached to the inclined front lower portion (see the lower horizontal portion 8a). The rear part of the rear seats 9 and 10 is attached to the rear high part 8b.

  According to this configuration, since the general surface 8 of the floor panel (see the rear floor 4) is inclined forward, the both sides of the floor panel (see the rear floor 4) support the rotation of the rear seats 9 and 10 (see the front view). For example, a space for attaching a member necessary for double hold can be secured, and a rear floor protruding portion 7 protruding upward in the vehicle width direction is appropriately formed in an intermediate portion of the floor panel (see rear floor 4) in a front view. be able to. Therefore, it is possible to achieve both the mounting of the rear seats 9 and 10 and the securing of the capacity of the fuel tank 30.

Further, the rear seats 9 and 10 are attached to a seat support frame 15 having left and right ends attached to the general surface 8 of the floor panel (see the rear floor 4) and extending in the vehicle width direction.
According to this configuration, since the rear seats 9 and 10 are attached to the seat support frame 15 extending in the vehicle width direction, the capacity expansion of the fuel tank 30 can be ensured while ensuring the support rigidity of the rear seats 9 and 10. .

In the correspondence between the configuration of the present invention and the above-described embodiment,
The floor panel of the present invention corresponds to the floor panel 1 and the rear floor 4 of the embodiment,
Similarly,
The floor protrusion corresponds to the rear floor protrusion 7,
The seat corresponds to the rear seats 9 and 10,
The front lower portion where the general surface is inclined corresponds to the lower horizontal portion 8a,
The present invention is not limited to the configuration of the above-described embodiment.

The top view which shows the arrangement structure of the fuel end tank for vehicles of this invention. The front view which shows a fuel tank arrangement | positioning structure. The side view which shows a fuel tank arrangement | positioning structure. The expanded sectional view of a seat slide rail. The front view which shows the related structure of a floor protrusion part and a tank protrusion part. The bottom view of FIG. FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. The side view which shows the other Example of a tank protrusion part. Explanatory drawing which shows the passenger | crew and leg space which were seated on the rear seat.

1 ... Floor panel 3 ... Kick-up part 4 ... Rear floor (floor panel)
7 ... Rear floor protrusion (floor protrusion)
8 ... General surface 8a ... Lower horizontal part (Lower part)
8b ... High part 9,10 ... Rear seat (seat)
11 ... striker (supporting part)
DESCRIPTION OF SYMBOLS 12 ... Fixed bracket 15 ... Seat support frame 27 ... Rear side frame 28 ... Rear cross member 30 ... Fuel tank 30a ... Tank protrusion 30c ... Fuel pump attachment part 31 ... Space

Claims (4)

A fuel tank disposition structure in which a fuel tank is disposed below a floor panel forming a passenger compartment floor,
Forming a floor projecting portion projecting upward from the general surface of the floor panel on at least a part of the floor panel in the vehicle width direction;
While disposing the fuel tank below the general surface of the floor panel,
Forming a tank protruding portion protruding upward in at least a part of the fuel tank in the vehicle width direction;
While disposing the tank protrusion in the space formed by the floor protrusion,
A seat is disposed on the vehicle interior side above the floor protrusion,
The floor panel is provided with a kick-up portion with a step formed above,
The floor protrusion is formed behind the kick-up portion,
The general surface of the floor panel is located on both sides in the vehicle width direction of the floor protruding portion behind the kick-up portion,
The front part of the seat is attached to the front lower part inclined, and the rear part of the seat is attached to the rear high part,
A fixing bracket is attached to the lower horizontal portion of the general surface, and the fixing bracket is provided on both sides in the vehicle width direction of the floor protrusion,
The front part of the seat is attached to the lower part via the fixing bracket,
Rear side frames extending in the front-rear direction are provided on both sides of the floor panel,
A rear cross member that connects the rear side frame in the vehicle width direction is provided behind the floor protrusion,
A vehicle fuel tank arrangement structure in which a support portion for the rear portion of the seat is provided between the rear of the floor protrusion and the rear cross member. The floor protrusion is formed to protrude over substantially the entire width in the vehicle width direction,
2. The vehicle fuel tank arrangement structure according to claim 1, wherein the tank protruding portion in the vehicle width direction of the fuel tank is formed over substantially the entire width in the vehicle width direction excluding the fuel pump mounting portion. The fuel tank arrangement structure according to claim 1 or 2, wherein the fuel tank is arranged only in a lower space behind the kick-up portion. The vehicle fuel tank arrangement structure according to claim 1, wherein the seat is attached to a seat support frame having left and right ends attached to a general surface of the floor panel and extending in a vehicle width direction.

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