Fuel tank device

Abstract

To provide a fuel tank device that is able to reduce the weight and manufacturing cost of a fuel tank and able to reduce the volume of an air layer formed in the fuel tank.SOLUTION: A fuel tank device includes: a fuel tank installed in a lower region of a body floor; and a tank band fixing the fuel tank to the body floor. The fuel tank includes a bracket provided so as to leave a predetermined space between a surface of the fuel tank, facing the body floor, and a lower surface of the body floor.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a fuel tank arrangement. [Background technology]

[0002] Patent document 1 discloses a fuel tank device in which a fuel tank is supported from below the vehicle by a tank band with an elastically deformable cushioning material between the top surface of the tank and a member attached to the body floor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-074331 Summary of the Invention [Problem to be solved by the invention]

[0004] The surface (top surface) of the fuel tank disclosed in Patent Document 1 that faces the body floor is provided with projections and recesses for the installation of components such as a fuel cut-off valve. As a result, an air layer is formed inside the fuel tank on the inside of the projections, which promotes fuel evaporation and makes the fuel tank heavier, making it difficult to reduce manufacturing costs.

[0005] In view of the above circumstances, at least one embodiment of the present invention aims to provide a fuel tank device that enables weight reduction and manufacturing costs of the fuel tank, as well as reduces the volume of the air layer formed in the fuel tank. [Means for solving the problem]

[0006] (1) A fuel tank device according to at least one embodiment of the present invention is a tank device comprising a fuel tank installed in a lower region of a body floor and a tank band for fixing the fuel tank to the body floor, wherein the fuel tank is provided with a bracket arranged so as to leave a predetermined gap between the surface of the fuel tank facing the body floor and the underside of the body floor.

[0007] According to the above configuration (1), by setting the predetermined gap to be larger than the height of components such as the fuel cutoff valve (FCV), the surface (top surface) of the fuel tank facing the body floor can be made flat, which makes it possible to reduce the weight and manufacturing costs of the fuel tank, and also reduces the volume of the air layer formed in the fuel tank.

[0008] (2) In some embodiments, in the configuration of (1) above, the bracket is provided directly above the tank band.

[0009] According to the above configuration (2), by tightening the tank band, the tank bracket can be brought into close contact with the underside of the body floor.

[0010] (3) In some embodiments, in the configuration of (1) above, the bracket is fixed to a side surface of the fuel tank.

[0011] According to the above configuration (3), the surface (top surface) of the fuel tank facing the body floor can be made flat, which increases the degree of freedom in arranging components such as the fuel cutoff valve.

[0012] (4) In some embodiments, in the configuration of (1) above, the fuel tank is made of resin, and the bracket is fixed to a nut embedded in a side surface of the fuel tank.

[0013] According to the above configuration (4), there is no need to provide a separate metal fitting for fixing the bracket, which makes it possible to reduce the weight and cost of the fuel tank and avoid an increase in the number of parts. [Effects of the Invention]

[0014] According to at least one embodiment of the present invention, it is possible to reduce the weight and manufacturing costs of the fuel tank, and also to reduce the volume of the air layer formed in the fuel tank. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a diagram schematically illustrating a fuel tank device according to an embodiment. [Figure 2] 2 is a view of the fuel tank device shown in FIG. 1 taken along the line II-II. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, several embodiments of the present invention will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present invention.

[0017] FIG. 1 is a diagram schematically showing a fuel tank device according to an embodiment, and FIG. 2 is a view taken along the line II-II of the fuel tank device shown in FIG.

[0018] As shown in FIG. 1, the fuel tank device 1 according to the embodiment includes a fuel tank 13 installed in a lower region of a body floor 11, and a tank band 15 that fixes the fuel tank 13 to the body floor 11.

[0019] The body floor 11 is a floor portion of the vehicle that separates the interior and exterior of the vehicle. The body floor 11 is provided with a floor tunnel 17 that protrudes into the interior of the vehicle at the center in the vehicle width direction. The floor tunnel 17 protrudes into the interior of the vehicle, thereby forming a space 19 below the floor tunnel 17. In this embodiment, the fuel tank 13 is installed in this space 19. A mounting seat 21 for attaching a tank band 15 is provided on the underside of the body floor 11. A seat surface 21a of the mounting seat 21 is provided so as to be spaced apart from the body floor 11, and a nut 23 is welded to the surface opposite the seat surface 21a, which faces the body floor 11. One end and the other end of the tank band 15 are provided with through holes, and the fuel tank 13 is fixed to the body floor 11 by fastening bolts 25 that pass through these through holes to the nuts 23.

[0020] The fuel tank 13 is provided with a bracket 27 that is provided so as to leave a predetermined gap between a surface 13a of the fuel tank 13 that faces the body floor 11 (floor tunnel 17) and a lower surface 17a of the floor tunnel 17. The surface 13a of the fuel tank 13 that faces the day floor is the upper surface 13a of the fuel tank 13, and the predetermined gap is set higher than components 29 such as a fuel cutoff valve (FCV). The bracket 27 is gate-shaped, with one end and the other end each provided on a side surface of the fuel tank, but this is not limited to this. Also, as shown in FIG. 2, the bracket 27 is provided directly above the tank band 15, but this is not limited to this.

[0021] The fuel tank 13 is a resin fuel tank, and the bracket 27 is fixed to a nut 31 embedded in the side of the fuel tank 13 by a bolt 33, but this is not limitative.

[0022] According to the fuel tank device 1 of the embodiment, by setting the predetermined distance higher than the component 29 such as the fuel cutoff valve, the surface (upper surface) 13a of the fuel tank 13 facing the body floor 11 can be made flat. This makes it possible to reduce the weight and manufacturing costs of the fuel tank 13, and also reduces the volume of the air layer formed in the fuel tank 13.

[0023] Furthermore, since the bracket 27 is provided directly above the tank band 15, by tightening the tank band 15, the bracket 27 can be brought into close contact with the lower surface 17a of the body floor 11 (floor tunnel 17).

[0024] Furthermore, since the bracket 27 is fixed to the side surface of the fuel tank 13, the surface (upper surface) 13a of the fuel tank 13 facing the body floor 11 can be made flat. This allows for greater freedom in the placement of components 29, such as a fuel cutoff valve.

[0025] Furthermore, since the fuel tank 13 is made of resin and the bracket 27 is fixed with a bolt 33 to a nut 31 embedded in the side of the fuel tank 13, there is no need to provide a separate metal fitting for fixing the bracket 27, which makes it possible to reduce the weight and cost of the fuel tank 13 and avoid an increase in the number of parts.

[0026] The present invention is not limited to the above-described embodiments, and includes modifications to the above-described embodiments and appropriate combinations of these modifications. [Explanation of symbols]

[0027] 1 Fuel tank device 11 Body Floor 13. Fuel tank 13a Surface facing the body floor (top surface) 15 Tank Band 17 Floor Tunnel 17a Bottom side 19 Space 21 Mounting seat 21a Seat 23 Nut 25 volts 27 Bracket 29. Components such as fuel cut-off valves (FCV) 31 Nuts embedded in the side of the fuel tank 33 volts

Claims

1. A fuel tank installed in a lower area of the body floor; a tank band that fixes the fuel tank to the body floor; A tank device comprising: the fuel tank includes a bracket provided so as to leave a predetermined gap between a surface of the fuel tank facing the body floor and a lower surface of the body floor, Fuel tank equipment.

2. 2. The fuel tank device according to claim 1, wherein the bracket is provided immediately above the tank band.

3. 2. The fuel tank device according to claim 1, wherein the bracket is fixed to a side surface of the fuel tank.

4. The fuel tank is made of resin, 2. The fuel tank device according to claim 1, wherein the bracket is fixed to a nut embedded in a side surface of the fuel tank.

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