JP2003118403A - Fuel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To open fuel vent holes in appropriate positions of a fuel tank body. SOLUTION: A recess part 30 representing a mark for opening the fuel vent hole in the fuel tank body 10 and projecting inward in the fuel tank body 10 is formed in a position in a lower part of a sub tank 26 in the lower surface 10E of the bottom part 10D of the fuel tank body 10. A recess part 32 projecting inward in the sub tank 26 is formed in the bottom 26B of the sub tank 26 abutting on the recess part 30. The positions of the recess part 30 and the recess part 32 are so set that a pump assembly 14 and a well-known puncture device 34 as hole opening means, which intrudes inside the fuel tank body, are prevented from interfered with each other when fuel vent holes are opened in the recess part 30 and the recess part 32.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a fuel tank,
In particular, it relates to a fuel tank equipped in a vehicle such as an automobile.

[0002]

2. Description of the Related Art Conventionally, in a fuel tank mounted on a vehicle such as an automobile, there is known a technique for recovering the fuel in the fuel tank main body when the vehicle is scrapped, and an example thereof is disclosed in JP-A-10-1.
No. 8929.

As shown in FIG. 7, in this technique, the fuel tank main body 100 of the discarded vehicle mounted on the pedestal is used.
The puncture tool 102 for forming a fuel drain hole
By the first cylinder device 104 of the puncturing device 106, an operator visually pierces the fuel from below to recover the fuel in the fuel tank 100 main body into the fuel receiving container 108.

[0004]

However, in such a technique, it is necessary to form a fuel vent hole at an appropriate position on the bottom portion 100A of the fuel tank main body 100, for example, a position where the sub tank 110 as an internal tank is arranged. If this is not possible, the fuel may remain in the sub-tank 110, and the fuel in the fuel tank main body 100 cannot be reliably drained.

In view of the above facts, an object of the present invention is to provide a fuel tank capable of forming a fuel vent hole at an appropriate position of a fuel tank body.

[0006]

According to a first aspect of the present invention, there is provided an internal tank disposed inside a fuel tank main body, and a fuel formed on a lower surface of the fuel tank main body below the internal tank. And a hole-drilling portion display unit that serves as a mark when a fuel drain hole is formed in the tank body.

Therefore, when a worker opens a fuel vent hole in the bottom of the fuel tank body, the fuel is marked by the hole opening display means formed at a position below the inner tank on the lower surface of the fuel tank body. By forming the vent hole, the fuel vent hole can be opened at an appropriate position of the fuel tank body. As a result, the fuel vent hole can be surely formed in the internal tank, so that the fuel in the fuel tank body including the fuel in the internal tank can be surely taken out.

According to a second aspect of the present invention, in the fuel tank according to the first aspect, the perforating portion display means is for opening a fuel vent hole in the fuel tank main body and the fuel tank main body. It is characterized in that it is formed at a position where it does not interfere with the hole opening means.

Therefore, in addition to the contents described in claim 1,
When a worker opens a fuel vent hole at the bottom of the fuel tank body, the fuel vent hole is formed by using the hole display portion display means formed at a position below the internal tank on the lower surface of the fuel tank body as a mark. As a result, the fuel vent hole can be formed at a position where the parts inside the fuel tank body and the hole opening means for making the fuel vent hole in the fuel tank body do not interfere with each other.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment of Fuel Tank of the Present Invention
The embodiment will be described with reference to FIG.

The arrow UP in the figure indicates the upward direction of the fuel tank body.

As shown in FIG. 1, in this embodiment, a circular opening 12 is formed in the upper wall 10A of the fuel tank body 10 made of metal, and a pump assembly 14 is formed below the opening 12. Is provided.

A pipe 16 extending from the upper portion of the pump assembly 14 is a set plate 1 for closing the opening 12.
6 through the base portion 16A and between the outer peripheral portion of the base portion 16A of the set plate 16 and the outer peripheral portion 10B of the opening portion 12, a ring-shaped gasket 18 extending along the opening portion 12 is formed.
Are pinched. A ring-shaped sealing material 20 is sandwiched between the outer peripheral portion of the set plate 16 and the upper wall 10A of the fuel tank body 10.

The pump assembly 14 is a fuel tank body 1.
Subtank 2 as an internal tank disposed inside 0
6 is disposed inside the sub-tank 26, and a side wall portion 26A of the sub-tank 26.
The fuel passage 2 that connects the inside and the outside of the sub tank 26.
8 is formed. In addition, the bottom portion 26 of the sub tank 26
B is fixed to the bottom portion 10D of the fuel tank body 10 by welding or the like. At a position below the sub tank 26 on the lower surface 10E of the bottom portion 10D of the fuel tank body 10, the fuel B is attached to the fuel tank body 10 when the vehicle is scrapped. A cylindrical concave portion 30 serving as a hole forming portion display means, which serves as a mark for forming a hole, is formed so as to protrude toward the inside (upward) of the fuel tank body 10.

At the bottom 26B of the sub-tank 26 above the recess 30, a recess 32 as an escape portion for the recess 30 is formed so as to project inward (upward) of the sub-tank 26, and the recess 30 and the recess 32 are in contact with each other. Touching. The positions of the recesses 30 and the recesses 32 are the same as those in the fuel tank body 10, for example, the pump assembly 14, the recesses 30 and the recesses 3.
A well-known puncture tool 34 as a hole opening means that enters into the fuel tank body 10 when the fuel vent hole is opened in 2 is set at a position where it does not interfere.

Therefore, an operator visually pierces the recess 30 with the puncture tool 34 for opening the fuel drain hole, so that the fuel in the fuel tank main body 10 including the fuel in the sub tank 26 can be reliably removed. You can do it.

Next, the operation of this embodiment will be described.

In the fuel tank of this embodiment, when a worker makes a fuel vent hole in the bottom portion 10D of the fuel tank body 10, it is formed at a position on the lower surface 10E of the fuel tank body 10, particularly below the sub tank 26. By forming the fuel vent hole in the recess 30 with the puncture tool 34 using the recess 30 as a mark, the fuel vent hole can be opened at an appropriate position in the fuel tank body 10. As a result, the fuel vent hole can be surely formed in the bottom portion 26B of the sub tank 26, so that the fuel in the fuel tank body 10 including the fuel in the sub tank 26 can be surely taken out.

Further, in this embodiment, the worker uses the puncture tool 34 to form a fuel vent hole in the recess 30 by using the recess 30 formed at the lower position of the lower surface 10E of the fuel tank body 10 as a mark. Thus, the fuel vent hole can be formed at a position within the fuel tank body 10 where the pump assembly 14 and the puncture tool 34 do not interfere with each other.

Next, a second embodiment of the fuel tank of the present invention will be described with reference to FIG.

The arrow UP in the figure indicates the upward direction of the fuel tank body.

As shown in FIG. 2, in this embodiment, a circular opening 42 is formed in the upper wall 4A of the fuel tank body 40 made of resin, and a pump assembly 44 is provided below the opening 42. It is arranged.

The pump assembly 44 has an integral structure with a reserve cup 46 as an internal tank, and a pipe 50 extending from an upper portion of a pump body 48 has an opening 4
The pump flange portion 52 that closes 2 is penetrated. The pump flange portion 52 is
It is fixed to the opening 42, and a ring-shaped gasket 58 along the opening 42 is sandwiched between the outer peripheral portion of the pump flange portion 52 and the outer peripheral portion 40B of the opening 12.

Reserve cup 46 and pump flange 5
A coil spring 60 as a biasing means is provided between
The coil springs 60 are
Reserve cup 46 to the bottom 40C of fuel tank body 40
Direction (arrow A direction in FIG. 2). Therefore, the reserve cup 46 is always in contact with the bottom portion 40C of the fuel tank body 40 regardless of the distortion of the fuel tank body 40.

A pump main body 48 as a component in the fuel tank main body is disposed in the reserve cup 46, and a side wall portion 46A of the reserve cup 46 connects a fuel passage 48 connecting the inside and the outside of the reserve cup 46. Are formed. In addition, the bottom surface 40 of the bottom portion 40C of the fuel tank body 40
At the position below the reserve cup 46 in D,
Cylindrical recess 6 serving as a hole opening display unit that serves as a mark when a fuel vent hole is opened in the fuel tank body 40 when the vehicle is scrapped.
2 is formed so as to project inward (upward) of the fuel tank body 40.

Reserve cup 46 above recess 62
In the bottom portion 46B of the recessed portion 64,
Are formed so as to project inward (upward) of the reserve cup 46. The positions of the recesses 62 and the recesses 64 are determined by the components inside the fuel tank body 40, such as the pump body 48.
A well-known puncture tool 66 as a hole opening means that enters the fuel tank body 40 when the fuel vent hole is formed in the recess 62 and the recess 64 is set at a position where it does not interfere with each other.

Therefore, an operator visually pierces the recess 62 with a puncture tool 66 for opening a fuel vent hole to reliably remove the fuel in the fuel tank body 40 including the fuel in the reserve cup 46. You can do it.

Next, the operation of this embodiment will be described.

In the fuel tank of this embodiment, when a worker opens a fuel vent hole in the bottom portion 40C of the fuel tank body 40, it is formed at a position on the lower surface 40D of the fuel tank body 40, particularly below the reserve cup 46. Recess 6
By forming a fuel vent hole in the concave portion 62 with the puncture tool 66 using 2 as a mark, the fuel vent hole can be opened at an appropriate position in the fuel tank body 40. As a result, the fuel vent hole can be formed in the bottom portion 46B of the reserve cup 46, so that the fuel in the fuel tank main body 40 including the fuel in the reserve cup 46 can be reliably drained.

Further, in the present embodiment, the worker uses the puncture tool 66 to form a fuel drain hole in the recess 62 by using the recess 62 formed at the lower position of the lower surface 40D of the fuel tank body 40 as a mark. Then, a component in the fuel tank body 40, for example, the pump body 48 and the puncture tool 66.
A fuel drain hole can be formed at a position where does not interfere with.

Next, a third embodiment of the fuel tank of the present invention will be described with reference to FIG.

The same members as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 3, in this embodiment, the concave portion 6 formed at a position below the reserve cup 46.
The thickness M1 of the entire 4 is set to be smaller than the thickness M2 of the other portion of the reserve cup 46 (M1 <M2),
A fuel drain hole can be easily formed in the recess 64.

Next, the operation of this embodiment will be described.

The present embodiment has the following effects in addition to the effects of the second embodiment.

That is, in this embodiment, the reserve cup 4
The thickness M1 of the entire concave portion 64 in 6 is smaller than the thickness M2 of the other portion of the reserve cup 46 (M1 <M2)
Since the setting is made, when the worker uses the puncture tool 66 to form a fuel vent hole in the recess 62 using the recess 62 of the fuel tank body 40 as a mark, the recess 6 of the reserve cup 46 is set.
4, the fuel drain hole can be easily formed. As a result, when forming the fuel drain hole, the reserve cup 46 does not escape upward against the biasing force of the coil spring 60 due to the pressing force of the puncture tool 66, and the workability can be improved.

In this embodiment, the reserve cup 4
The total thickness M of the recess 64 formed at a position below 6
1 is set to be thinner than the wall thickness M2 of the other portion of the reserve cup 46 (M1 <M2) so that the fuel drain hole can be easily formed in the recess 64. Instead of this, as shown in FIG. As shown, the wall thickness M1 of only the bottom portion 64A of the recess 64 formed at the position below the reserve cup 46 is set to be thinner (M1 <M2) than the wall thickness M2 of the other portion of the reserve cup 46. The fuel vent hole may be easily formed in the bottom portion 64A of the recess 64.

Further, the entire concave portion 64 of the reserve cup 46 or only the bottom portion 64A of the concave portion 64 may be replaced by the reserve cup 4
It may be configured to use (two-color molding) another material such as a resin material or rubber, which is weaker in strength than the other portions of No. 6.

Further, as shown in FIG. 5, the bottom portion 6 of the recess 64 formed at a position below the reserve cup 46.
4A is provided with a fuel vent hole 70 in advance, and the fuel vent hole 7
The grommet 72 is fitted to 0, and the puncture tool 66
The grommet 72 may be removed from the fuel drain hole 70.

Further, as shown in FIG. 6, a fuel intake port 76 to the reserve cup 46 is formed in the bottom portion 64 A of the recess 64 formed at the position below the reserve cup 46, and this fuel intake port 76 is formed. A check valve 78 is provided,
The puncture tool 66 causes the check valve 78 to move to the fuel intake port 7.
The configuration may be deviated from 6.

In the above, the present invention has been described in detail with respect to specific embodiments, but the present invention is not limited to such embodiments, and various other embodiments within the scope of the present invention. It is obvious to a person skilled in the art that For example, the shapes and the numbers of the recesses 30 and 62 formed in the fuel tank main bodies 10 and 40, the recesses 32 formed in the sub tank 26, and the recesses 64 formed in the reserve cup 46 are not limited to the configurations of the above-described embodiments, and other The shape and the number may be plural. Further, as long as the fuel tank body 10 or 40 has a structure that serves as a mark when the fuel vent hole is opened, the hole opening portion display means may be a convex portion protruding downward. Further, the perforated portion display means may be a mark such as paint or a stamp.

[0042]

According to the first aspect of the present invention, the internal tank disposed inside the fuel tank main body and the lower surface of the fuel tank main body below the internal tank are formed. Since it has a hole forming portion display means that serves as a mark when forming a hole, it has an excellent effect that the fuel vent hole can be formed at an appropriate position of the fuel tank main body.

According to a second aspect of the present invention, in the fuel tank according to the first aspect, the perforated portion display means is a component inside the fuel tank main body and a perforated portion for forming a fuel vent hole in the fuel tank main body. Since it is formed at a position where it does not interfere with the means, in addition to the effect according to claim 1, a position where the parts in the fuel tank main body and the hole opening means for making a fuel vent hole in the fuel tank main body do not interfere It has an excellent effect that a fuel drain hole can be formed.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a main part of a fuel tank according to a first embodiment of the present invention.

FIG. 2 is a side sectional view showing a main part of a fuel tank according to a second embodiment of the present invention.

FIG. 3 is a side sectional view showing a main part of a fuel tank according to a third embodiment of the present invention.

FIG. 4 is a side sectional view showing a main part of a fuel tank according to another embodiment of the present invention.

FIG. 5 is a side sectional view showing a main part of a fuel tank according to another embodiment of the present invention.

FIG. 6 is a side sectional view showing a main part of a fuel tank according to another embodiment of the present invention.

FIG. 7 is a side sectional view showing a main part of a fuel tank according to a conventional technique.

[Explanation of symbols]

10 Fuel tank body 10E Lower surface of fuel tank body 14 Pump assembly (parts inside fuel tank) 26 sub tank (internal tank) 30 Recessed portion of fuel tank body (drilling portion display means) 34 Puncture tool 40 Fuel tank body 40D Fuel tank body bottom surface 44 Pump assembly 46 reserve cup (internal tank) 48 Pump body (parts inside fuel tank body) 62 Recessed portion of fuel tank body (drilling portion display means) 66 puncture tool

Claims (2)

[Claims] 1. An internal tank disposed inside a fuel tank main body, and a lower surface of the fuel tank main body formed below the internal tank, which serves as a mark when a fuel vent hole is formed in the fuel tank main body. A fuel tank comprising: a perforated portion display means. 2. The perforated portion display means is formed at a position where a component inside the fuel tank body and a perforated means for forming a fuel vent hole in the fuel tank body do not interfere with each other. The fuel tank according to claim 1.