CN104214017A - Fuel supply device for vehicle - Google Patents

Abstract

The present invention provides a fuel supply device for a vehicle that can be arranged near a fuel tank at low cost even if it is a heavy canister. The bottom (32) of the fuel tank (31) is formed by a shallow bottom (33) with a shallow bottom and a deep bottom (34) with a bottom deeper than the shallow bottom (33). The shallow bottom (33) is formed on the right side in the vehicle width direction, and the deep bottom (34) is formed on the left side in the vehicle width direction. The shallow bottom (33) is supported by the first belt (41). The deep bottom (34) is supported by the second belt (42). The first tank band (41) is made of a metal tubular member. Therefore, the first tank belt (41) has higher rigidity than a structure made of a plate-shaped member. A first bracket (44) and a second bracket (45) are provided on the first box belt. Adsorption tanks (51) are installed on the above-mentioned first bracket (44) and second bracket (45).

Description

Vehicle Fuel Supply Device

technical field

The present invention relates to a vehicle fuel supply device including an adsorption canister for adsorbing evaporated fuel generated in a fuel tank.

Background technique

The canister is a part for absorbing the fuel evaporated in the fuel tank when the engine is stopped. In vehicles such as automobiles, a vehicle fuel supply device including such a canister is known (for example, refer to Patent Document 1).

The vehicle fuel supply device disclosed in Patent Document 1 has a structure in which a bracket is directly provided on a resin fuel tank, and a canister is attached to the bracket. Therefore, the canister is arranged near the fuel tank. However, since the canister is attached to the fuel tank, the portion through which the belt for supporting the fuel tank passes is restricted.

In addition, in order to further absorb evaporated fuel in the fuel tank, a canister with a large amount of activated carbon may be used. When the amount of activated carbon is large, the adsorption tank becomes heavy. If a heavy canister is directly attached to a resin fuel tank, concerns about strength arise. Therefore, when using a heavy canister, a countermeasure is taken to fasten the canister to the vehicle frame via a mounting bracket. There is proposed a technique of supporting the canister using such a mounting bracket (for example, refer to Patent Document 2).

In the vehicle fuel supply device disclosed in Patent Document 2, a fuel tank is provided on a vehicle frame. The bottom of the fuel tank is formed of a shallow bottom with a shallow bottom and a deep bottom with a deeper bottom than the shallow bottom, and the adsorption tank is arranged directly under the shallow bottom.

The adsorption canister is protected by a protective member, and is attached to a vehicle frame or the like by an attachment fitting. By being mounted on the vehicle frame via the mounting bracket, a heavy canister can be supported, but the number of parts increases due to the use of the protective member and the mounting bracket. Therefore, the component cost increases, and the weight also becomes large.

【Prior technical literature】

【Patent Literature】

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-231743

[Patent Document 2] Japanese Patent No. 4355312

Contents of the invention

【Problems to be solved by the invention】

The present invention provides a fuel supply device for a vehicle that can be arranged near a fuel tank at low cost even if it is a heavy canister.

【solution】

A first aspect of the present invention relates to a fuel supply device for a vehicle including a fuel tank disposed on a vehicle body and an adsorption canister for adsorbing evaporated fuel generated in the fuel tank, the fuel supply device for a vehicle is characterized in that , the bottom of the fuel tank is formed by a shallow bottom with a shallow bottom and a deep bottom with a bottom deeper than the shallow bottom, the shallow bottom is mounted on the vehicle body through a first tank belt, and the deep bottom is installed through a second tank belt While being installed on the vehicle body, a bracket is provided on the first belt, and the adsorption tank is arranged directly under the first belt and is installed on the bracket.

In a second aspect of the present invention, the tank band is a metal tubular member.

In a third aspect of the present invention, the adsorption tank is positioned higher than the lower end of the deep bottom.

【Invention effect】

In the first aspect of the present invention, the shallow bottom of the fuel tank is attached to the vehicle body via a first strap on which a bracket is provided. Since the canister is arranged directly below the first cassette and is attached to the bracket, the mounting bracket for the canister and the cassette can be used in common to reduce the number of parts. Therefore, even a heavy canister can be arranged near the fuel tank at low cost.

In the second aspect of the present invention, the tank band is a metal tubular member. Since the rigidity of the belt supporting the canister is increased, the deflection of the belt can be reduced, and the vibration of the canister during travel can be reduced.

In the third aspect of the present invention, since the canister is located above the lower end of the deep bottom, the canister can be placed near the shallow bottom, and the canister can be placed inside to protect it.

Description of drawings

Figure 1 is a bottom view of the vehicle rear of the present invention.

Fig. 2 is a 2-direction view of Fig. 1 .

Fig. 3 is a 3-direction view of Fig. 2 .

Fig. 4 is an exploded perspective view of main parts of the present invention.

Fig. 5 is an enlarged view of the front mounting portion of the canister of the present invention.

Fig. 6 is an enlarged view of the rear mounting portion of the canister of the present invention.

Fig. 7 is an exploded perspective view of main parts of another aspect of Fig. 4 .

Fig. 8 is an enlarged view of a rear mounting portion of another canister shown in Fig. 6 .

【Symbol Description】

10...vehicle, 11...body, 20...frame, 22...front cross member, 23...rear cross member, 30...fuel supply device for vehicle, 31...fuel tank, 32...bottom, 33...shallow bottom, 34...deep Bottom, 41...the first box belt, 44...the first bracket, 45...the second bracket, 51...the adsorption tank.

Detailed ways

Hereinafter, the form for implementing this invention is demonstrated based on drawing. It should be noted that "front", "rear", "left", "right", "up", and "down" refer to the direction viewed from the driver, Fr indicates the front side, Rr indicates the rear side, and L indicates the left side Side, R means the right side, Top means the upper side, and Bottom means the lower side.

【Example】

The vehicle rear part of the embodiment will be described. As shown in FIG. 1, the vehicle 10 is a motor vehicle, and the frame 20 of the vehicle body 11 has left and right rear side frames 21, 21 extending front and rear, a front cross member 22 erected between the above-mentioned rear side frames 21, 21, and Rear beam 23.

Furthermore, in the vehicle frame 20 , the left and right rockers 24 , 24 extend forward from the front portions of the left and right rear side frames 21 , 21 . Left and right rear wheels 25 , 25 are disposed behind the above-mentioned left and right rockers 24 , 24 and laterally of the left and right rear side frames 21 , 21 .

In the vehicle body 11 , a fuel tank 31 constituting a vehicle fuel supply device 30 is arranged in a space S1 surrounded by left and right rear side frames 21 , 21 , a front beam 22 , and a rear beam 23 , that is, at the rear of the vehicle body.

A first tank strap 41 and a second tank strap 42 for supporting the fuel tank 31 are spanned between the front beam 22 and the rear beam 23 . The first belt 41 is arranged on the right side of the center in the vehicle width direction, and the second belt 42 is arranged on the left side of the center in the vehicle width direction. The right side of the bottom 32 of the fuel tank 31 in the vehicle width direction is supported by the first belt 41 , and the left side of the bottom 32 of the fuel tank 31 in the vehicle width direction is supported by the second belt 42 . Therefore, the left and right sides of the fuel tank 31 can be supported in a well-balanced manner.

It should be noted that, in the embodiment, the first box belt 41 and the second box belt 42 are respectively fastened and connected to the front beam 22 and the rear beam 23 by bolts 43, but they are not limited thereto, and may also be welded. .

In addition, the adsorption tank 51 constituting the vehicle fuel supply device 30 prevents discharge of evaporated fuel generated in the fuel tank 31 and is filled with an adsorbent such as activated carbon that adsorbs evaporated fuel. In order to absorb more evaporated fuel in the fuel tank 31, an adsorption canister 51 having a large amount of activated carbon is used. When the amount of activated carbon is large, the adsorption tank 51 becomes heavy.

The canister 51 is arranged in a space S1 surrounded by the left and right rear side frames 21 , 21 , the front beam 22 , and the rear beam 23 . The canister 51 is arranged so as to overlap with the fuel tank 31 in a bottom view, and is attached to the first tank belt 41 .

Next, the vehicle fuel supply device 30 will be described based on a rear view. As shown in FIG. 2 , a floor plate 26 is disposed on the upper portion of the front cross member 22 , and a fuel tank 31 is disposed below the front cross member 22 .

The bottom 32 of the fuel tank 31 is formed by a shallow bottom 33 having a shallow bottom and a deep bottom 34 having a deeper bottom than the shallow bottom 33 . The shallow bottom portion 33 is formed on the right side in the vehicle width direction, and the deep bottom portion 34 is formed on the left side in the vehicle width direction. The shallow bottom 33 is supported by the first belt 41 . The deep bottom 34 is supported by the second belt 42 .

By forming the shallow bottom 33 on the right side in the vehicle width direction, a space S2 can be provided below the shallow bottom 33 . By arranging the canister 51 in the space S2, the narrow space under the vehicle body 11 can be effectively used.

The first tank band 41 is composed of a metal tubular member. Therefore, the first tank band 41 has higher rigidity than a structure made of a plate-shaped member. A first bracket 44 and a second bracket 45 are provided on the first cassette. The adsorption tank 51 is attached to the first bracket 44 and the second bracket 45 described above.

Since the first belt 41 has high rigidity, it can support the fuel tank 31 and can also support the canister 51 , thereby reducing the deflection of the first belt and reducing the vibration of the canister 51 during running.

The adsorption tank 51 is arranged directly below the first tank belt 41 . Therefore, since the vehicle fuel supply device 30 arranges the canister 51 near the fuel tank 31 , the piping can be shortened to reduce costs, and it is also preferable from the viewpoint of the performance of the canister 51 .

The lower end of the canister 51 is located higher than the lower end of the deep bottom portion 34 of the fuel tank 31 . Therefore, the distance between the canister 51 and the road surface is increased, and the canister 51 can be protected because it is arranged in the inner part.

The second tank band 42 is a plate-like member. Therefore, the processing cost of the second cassette tape 42 can be reduced. Since the second tank band 42 supports only the fuel tank 31 , it does not require rigidity compared with the first tank band 41 , and the component cost can be reduced by being formed as a plate-shaped member.

It should be noted that the fuel tank 31 has a shallow bottom 33 formed on the right side in the vehicle width direction and a deep bottom 34 formed on the left side in the vehicle width direction. A deep bottom 34 is formed on the right side in the vehicle width direction, and the shape of the fuel tank 31 can also be appropriately changed.

Next, the vehicle fuel supply device 30 will be described based on a side view. As shown in FIG. 3 , the canister 51 has a main body portion 52 , a front mounting portion 53 provided on the front side of the main body portion 52 , and a rear mounting portion 54 provided on the rear side of the main body portion 52 . The adsorption tank 51 is attached to the first tank belt 41 via the first bracket 44 and the second bracket 45 .

The first strap 41 is U-shaped in side view, and has a bottom support portion 41a supporting the shallow bottom portion 33, a front curved portion 41b at the front end of the bottom support portion 41a, and a front curved portion 41b extending forward and upward from the front curved portion 41b. The extended forearm part 41c and the front frame attachment part 41d formed in the shape of a flat plate are formed in the upper end of this forearm part 41c. Furthermore, the first strap 41 has a rear curved portion 41e at the rear end of the bottom support portion 41a, a rear arm portion 41f extending rearward and upward from the rear curved portion 41e, and a flat plate formed at the upper end of the rear arm portion 41f. Rear frame mounting part 41g.

The fuel tank 31 can be positioned by fitting the shallow bottom 33 of the fuel tank 31 into the U-shaped portion of the first tank band 41 thus formed. The first tank belt 41 supports and positions the fuel tank 31 and can also serve as a support for the canister 51 , so that components supporting the vehicle fuel supply device 30 can be reduced, and component costs can be reduced.

It should be noted that, in the embodiment, the front cross beam 22 is located at a lower position than the rear cross beam 23, but it is not limited thereto, and the front cross beam 22 may be located at a higher position than the rear cross beam 23 or at the same position. height position. Therefore, the shape of the first tank band 41 can be appropriately changed in accordance with the shape of the vehicle frame 20 . Furthermore, since the first tank band 41 is a metal tubular member, it is easy to change the shape, and it is possible to cope with various types of vehicle frames at low cost.

Next, the operation of the vehicle fuel supply device 30 described above will be described. As shown in FIG. 4 , the canister 51 is composed of a main body portion 52 , a front mounting portion 53 , and a rear mounting portion 54 . The front mounting part 53 is fastened to the first bracket 44 by bolts 55 , and the rear mounting part 54 is fastened to the second bracket 54 by bolts 55 .

The adsorption tank 51 can be easily attached to and detached from the first tank belt 41 by bolts 55 , 55 . Therefore, the workability of the maintenance work of the canister 51 can be improved. Further, the adsorption can 51 can be stably attached by supporting both front and rear sides of the adsorption can 51 along the bottom support portion 41 a of the first tank belt 41 .

In addition, the adsorption canister 51 can also be processed integrally with the first tank belt 41, so when the fuel tank 31 (refer to FIG. 3 ) is maintained, the first tank belt 41 can be easily removed by removing the bolts 43, 43, thereby The maintenance workability of the fuel tank 31 is also improved.

Next, the periphery of the first bracket 44 will be described. As shown in FIG. 5( a ), the first bracket 44 is welded to the first strap 41 . Therefore, the first bracket 44 and the first cassette tape 41 can be handled integrally. The front attachment portion 53 is provided at substantially the center of the canister 51 in the width direction, and can support the canister 51 in a well-balanced manner directly below the first belt 41 and linearly from the first belt 41 . Furthermore, since the first tank band 41 is a hollow member, it is light in weight, and the weight of the fuel supply device 30 for a vehicle can be reduced.

As shown in Figure 5(b), the first bracket 44 includes a welded portion 44a welded to the first box belt 41, a hanging portion 44b extending downward from the welding portion 44a, and a flat plate formed at the lower end of the hanging portion 44b. part 44c, and the weld nut 44d provided on the upper surface of this flat part 44c. The bolt 55 is fastened and connected to the weld nut 44d from below.

Since the first bracket 44 has a simple structure in which a plate-shaped member is bent, material costs and processing costs can be reduced.

Next, the periphery of the second bracket 45 will be described. As shown in FIG. 6 , the second bracket 45 is welded to the first box strap 41 . Therefore, the second bracket 45 can be handled integrally with the first cassette tape 41 .

The second bracket 45 includes a welded portion 45a welded to the first strap 41, a hanging portion 45b extending downward from the welding portion 45a, a flat plate portion 45c formed at the lower end of the hanging portion 45b, and a flat plate portion 45c formed on the bottom of the flat plate portion 45c. Weld nuts 45d provided on the upper surface. The bolt 55 is fastened and connected to the weld nut 45d from below.

Since the second bracket 45 has a simple structure in which a plate-shaped member is bent, material costs and processing costs can be reduced.

Next, another aspect of FIG. 4 will be described based on the drawings. It should be noted that the same reference numerals are assigned to the same structures as those shown in FIG. 4 , and detailed description thereof will be omitted. As shown in FIG. 7 , an insertion hole 54 a is provided in the rear attachment portion 54 of the canister 51 . An insertion portion 45 e is provided at the front end of the second bracket 45 .

In the method of attaching the suction tank 51 to the first cassette 41, first, the insertion portion 45e of the second bracket 45 is inserted into the insertion hole 54a. Next, the front mounting portion 53 is fastened to the first bracket 44 with bolts 55 . Since one side is inserted and the other side is fastened and connected by bolts 55, the adsorption canister 51 can be easily attached to the first tank belt 41, and the number of assembly man-hours can be reduced.

Next, another aspect of FIG. 6 will be described based on the drawings. It should be noted that the same reference numerals are assigned to the same structures as those shown in FIG. 6 , and detailed description thereof will be omitted. As shown in FIG. 8 , the insertion portion 45 e of the second bracket 45 is inserted into the insertion hole 54 a of the canister 51 . The insertion hole 54a is a hole of a simple shape, so forming is easy. Thus, component costs can be reduced.

The vehicle fuel supply device 30 described above is summarized as follows.

As shown in FIGS. 1 to 3 , the shallow bottom 33 of the fuel tank 31 is attached to the vehicle body 11 via a first strap 41 , and brackets 44 and 45 are provided on the first strap 41 . Since the suction canister 51 is arranged directly below the first cassette 41 and is attached to the brackets 44 and 45 , the mounting brackets 44 and 45 for the suction canister 51 and the cassette 41 can be shared to reduce the number of components. Therefore, even the heavy canister 51 can be arranged near the fuel tank 31 at low cost.

As shown in FIG. 5 , the tank band 41 is a metal tubular member. Since the rigidity of the belt 41 supporting the canister 51 is increased, the deflection of the belt 41 can be reduced, and the vibration of the canister 51 during travel can be reduced.

As shown in FIG. 2 , the adsorption can 51 is located higher than the lower end of the deep bottom 34, so the adsorption can 51 can be arranged near the shallow bottom 33, and the adsorption can 51 can be arranged in the inner part to carry out the process. Protect.

It should be noted that, in the embodiment of the vehicle fuel supply device of the present invention, the adsorption canister is arranged at the positions shown in FIGS. The position of the second bracket is used to change the position of the adsorption tank appropriately. Furthermore, as shown in the present invention, as long as the canister is mounted on the belt, a vertically long canister can be supported by the belt passing through the center in the width direction.

In addition, in the embodiment, the first belt is attached to the front cross member and the rear cross member, but it is not limited to this, and other locations may be used as long as it is a vehicle frame. In addition, even if the first strap is not a vehicle frame, it may be other parts of the vehicle body, such as the lower surface of the floor, as long as it can support the fuel tank.

【Industrial Applicability】

The vehicle fuel supply device of the present invention is suitable for four-wheeled vehicles.

Claims (3)

1. A fuel supply device for a vehicle comprising a fuel tank disposed on a vehicle body and an adsorption canister for adsorbing evaporated fuel generated in the fuel tank, wherein the fuel supply device for a vehicle is characterized in that The bottom of the fuel tank is formed by a shallow bottom having a shallow bottom and a deep bottom having a bottom deeper than the shallow bottom, the shallow bottom is mounted to the body by a first strap, the deep bottom is mounted to the body by a second strap, A bracket is provided on the first case belt, The adsorption tank is arranged directly under the first belt and installed on the bracket. 2. The vehicle fuel supply device according to claim 1, wherein: The box strap is a metal tubular member. 3. The vehicle fuel supply device according to claim 1 or 2, wherein: The adsorption tank is positioned higher than the lower end of the deep bottom.