JPH0942090A - Flange for fuel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flange for a fuel tank wherein many kinds of flanges are easily obtained. SOLUTION: A flange mounted in an opening part of a fuel tank, having a flange main unit 2 having a through hole 223 of connecting an inside/outside of the fuel tank and having a tube 24 inserted to the through hole 223 from a vertical direction to the flange main unit 22, is provided with an O ring interposed between an end face of the tube 24 and an end face of the flange main unit 22 to seal an inside/outside of the fuel tank and a stay 26 inserted between a clamp part 224 formed in an upper surface of the flange main unit 22 and a flange part 243 of the tube 24. The tube 24 is fixed to the flange main unit 22 in a direction of fixing the O ring tightened by the stay 26. Since the stay 26 is made mountable/demountable, in the case of damaging the tube 24, it is removed from the flange main unit 22, to be made replaceable. By combination of the flange main unit with the tube, a flange of multifarious shape is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank flange that covers an opening of a fuel tank.

[0002]

2. Description of the Related Art In order to reduce the cost of a vehicle, parts around fuel tanks are being integrated, and along with this, in-tank fuel pumps are being made. For example,
As disclosed in JP-A-3-105055, fuel discharged from a fuel pump provided in a fuel tank is pressure-fed to the outside of the fuel tank through a discharge pipe, and the pressure-fused fuel is injected from a fuel injection valve to an engine. Injection supply to the combustion chamber of
It is known that surplus fuel is returned to the sub tank through a return pipe.

Further, in order to reduce the weight of the vehicle and reduce the evaporation of the fuel, the resin around the fuel tank has been advanced, and in the in-tank type fuel pump device, it has a function as a holding member of the fuel pump, for example, a lid of the fuel tank. Flange parts having a function of holding a fuel pump have been changed from conventional metal to resin.

[0004]

This flange part forms a hole that communicates with the inside and outside of the fuel tank, and the fuel discharged from the fuel pump is sent from this hole to the internal combustion engine side through a passage formed in the fuel pipe section. To be However, since the shape of the fuel pipe portion differs depending on the vehicle type, when molding the fuel pipe portion integrally with the flange component, various types of resin molds are required. Therefore, in terms of cost and quality, the effect of resinizing the flange component was not sufficiently obtained.

An object of the present invention is to provide a flange for a fuel tank, which can easily obtain various kinds of flanges by combining a plurality of members.

[0006]

[Means for Solving the Problems]

(Solution) In order to solve the above problems, a flange for a fuel tank according to claim 1 of the present invention covers an opening of the fuel tank to partition the inside and the outside of the fuel tank,
A flange main body having a through hole that communicates the inside and the outside of the fuel tank, and an insertion direction into the flange main body that is inserted into the through hole from a direction substantially perpendicular to an end surface of the flange main body outside the fuel tank. And a seal member that is sandwiched by the end surface of the tube and the end surface of the flange body in the insertion direction of the tube to seal the inside and the outside of the fuel tank, and the insertion into the flange body. A fixing member for tightening the seal member in a direction.

A fuel tank flange according to a second aspect of the present invention is characterized in that, in the fuel tank flange according to the first aspect, the tube and the flange body are detachable. A fuel tank flange according to a third aspect of the present invention is the fuel tank flange according to the first or second aspect, wherein the fixing member is integral with the flange body.

According to a fourth aspect of the present invention, there is provided the fuel tank flange according to the first or second aspect, wherein the fixing member is separate from the flange body. (Operation and effect of the invention) According to the fuel tank flange of the first aspect, since the flange body and the tube inserted into the flange body are separate bodies, the flange body and the tube may be molded separately. Therefore, the mold structure can be simplified. Since various flange shapes can be obtained by combining the flange body and the tube, it is possible to reduce the types of molding dies. The inside and outside of the fuel tank are sealed by a seal member that is tightened in the insertion direction into the flange body by a fixing member, so even if the flange body and the tube are separated, a seal between the inside and outside of the fuel tank. Sex is secured. Also, when handling the molded product, if the flange body and the tube are integrally molded, the tube will protrude from the flange body, so this tube portion is easily damaged, but if the flange body and the tube are separated, the tube will be damaged. It is possible to improve the sealing performance inside and outside the fuel tank.

According to the fuel tank flange of the second aspect, the tube and the flange body can be detached from each other. Therefore, if the tube is damaged during molding, assembly, or use, the tube can be removed from the flange body. Once removed and replaced, the flange body can continue to be used. This makes it possible to reduce costs. According to the fuel tank flange of the third aspect, since the fixing member and the flange main body are integrated, even if the flange main body and the tube are separated, the number of parts and the number of assembling steps do not increase excessively. .

According to the fuel tank flange of the fourth aspect, since the fixing member and the flange main body are separate bodies, the fixing member can be easily molded.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (First Embodiment) A first embodiment in which the fuel tank flange of the present invention is used in an in-tank type fuel pump device is shown in FIGS.
0 is shown.

As shown in FIG. 10, an in-tank type fuel pump device 2 is mounted inside a fuel tank 1. The upper tank 3 and the lower tank 4 made of metal are sandwiched and fixed by an insulator 5, bolts 11 and nuts 12.
A supply pipe 6 is connected to a fuel filler port 10 of the upper tank 3 with a rubber boot 7 interposed. A sub-tank 8 is installed inside the lower tank 4, and a communication pipe 9 that connects the inside and the outside of the sub-tank 8 of the lower tank 4 is provided.

An opening 3a is formed in the upper part of the upper tank 3, and a fuel tank flange 21 is attached so as to cover the opening 3a. The flange 21 is made of a resin such as polyacetal and has a function as a lid of the fuel tank 1 and is fixed to the upper tank 3 via a gasket 35.
24 which is inserted in the fuel tank 1 to form a passage communicating with the inside and outside of the fuel tank 1, and the flange body 21 to the tube 24.
A stay 2 described later as a fixing member that prevents the screw from coming off.
6 is provided.

A pump filter 13 and a pump case 16 are provided inside the sub tank 8, and a fuel pump 14 is housed inside the pump case 16. The fuel pump 14 is held by the flange 21 by fixing the upper end of the pump case 16 to the tubular portion 31 with a snap fit. Pump filter 1 by fuel pump 14
Fuel pumped through 3 is pumped to the internal combustion engine side through tube 24.

The shape of the flange 21 will be described in more detail below. As shown in FIG. 1, the flange 21 is
Flange body 22, tube 24, stay 2
6 Flange main body 22 The flange main body 22 attached to the upper tank 3 is integrally molded of resin. As shown in FIG. 4, the flange body 2
A disc portion 221 as an outer surface of the fuel tank is formed at the upper end of 2, and an inner wall of a cylindrical portion 222 extending from the disc portion 221 to the inside of the fuel tank is formed at a position slightly outside the center of the disc portion 221. A through hole 223 is formed. As shown in FIG. 5, on the outside of the fuel tank of the through hole 223, there is an introduction portion 223a having a tapered surface, and a ring-shaped flat surface substantially parallel to the disc portion 221 and the end surface of the flange body 21. End surface 223b is formed. Further, on both sides of the through hole 223, clamp portions 224 that extend in parallel with each other and have an inverted L-shaped cross section are provided facing each other.

Tube 24 As shown in FIGS. 6 to 8, the tube 24 is an L-shaped tubular body having a fuel passage 241 formed therein, and is integrally molded of resin. A quick connector fixing portion 242 for connecting a fuel pipe (not shown) to the internal combustion engine is formed in the small diameter straight pipe portion 245 of the tube 24 on the side opposite to the fuel tank. Also, the large diameter straight pipe portion 246 on the fuel tank side
The large-diameter straight pipe portion 246 is projected in the radial direction, and the introduction portion 2
A collar portion 243 having a diameter larger than that of 23a is formed. A rubber O-ring 244 as a sealing member that seals between the flange body 22 and the tube 24 is provided on the fuel tank side of the collar portion 243.

Stay 26 As shown in FIG. 9, the stay 26 is a plate-like member made of a resin having elasticity and having the same shape on the front and back sides. A ring-shaped tube holding portion 261 having an inner diameter slightly larger than the outer diameter
And a clamp engaging portion 263 provided on both sides of the tube holding portion 261 symmetrically with the opening 262. A neck portion 264 is formed between the tube holding portion 261 and the clamp locking portion 263.

On both sides of the opening 262 of the tube holding portion 261, an introduction portion 261a is formed which extends radially outward. The opening 262 side of the tube holding portion 261 with respect to the neck portion 264 functions as a tube side spring portion 265 due to the elasticity of the material resin of the stay 26. A convex portion 267 protruding in the radial direction is provided at a circumferential position facing the opening 262 of the tube holding portion 261, and a window portion 267a for removing the stay 26 is formed in the convex portion 267. .

The clamp engaging portion 263 has a U-shape, and a linear wall surface facing the radial outside of the tube holding portion 261 between the end portion on the opening 262 side and the end portion on the convex portion 265 side. 263a is formed. Further, the inclined surface 26 is provided on the outer end surface on the opening 262 side and the outer end surface on the convex portion 265 side.
3b is formed. The opening 262 side of the clamp engaging portion 263 with respect to the neck portion 264 functions as a clamp side spring portion 266 due to the elasticity of the material resin of the stay 26. In addition, the wall surface 26 of the two clamp holding portions 263
The spacing of 3a is slightly smaller than the spacing of the opposing wall surfaces 224a of the two clamp portions 224 shown in FIG.

As shown in FIGS. 1 to 3, when the tube 24 is assembled to the flange body 22, the end of the large diameter straight pipe portion 246 on the fuel tank side is inserted into the through hole 223 from the direction perpendicular to the disc portion 221. insert. Next, while pressing the tube 24 toward the flange main body 22 side, the clamp portion 2 shown in FIG.
24 lower end surface 224b and the upper end surface 243 of the collar portion 243.
1 and the stay 26 in the direction of arrow A in FIG.
Insert from the 62 side.

At this time, the tube-side spring portion 265 is displaced by the large-diameter straight pipe portion 246 in the direction of the arrow a shown in FIG. The clamp side spring portion 266 is connected to the stay 2 by the clamp portion 224.
It is displaced in the direction of arrow b, which is the outer direction with respect to the center line of 6. Since the introduction portion 261a and the inclined surface 263b smoothly perform the displacement in the arrow a direction and the arrow b direction, the stay 26 can be easily inserted. When the stay 26 is inserted to a predetermined position, the tube side spring portion 265 and the clamp side spring portion 266 return to the positions where no external force is applied. As a result, the tube 2 is attached to the flange body 22.
4 is rotatably assembled in the direction of arrow C shown in FIG.

As shown in FIG. 2, when the stay 26 is locked to the lower end surface 224b of the clamp portion 224,
The tube 24 is prevented from coming off in the arrow B direction.
Further, the lower end surface 224b of the clamp portion 224 and the collar portion 24 are
Since the space between the upper end surface 243a and the upper end surface 243a is slightly smaller than the thickness of the stay 26, the tube 22 is pressed in the direction in which the O-ring 244 is tightened by the stay 26 locked to the lower end surface 224b. Therefore, the O-ring 244
Is the lower end face 243b of the collar portion 243 as the end face of the tube 24 and the through hole 2 as the end face of the flange body 21.
It is clamped between the end surface 223b of the fuel tank 23 and the end surface 223b, so that the inside and the outside of the fuel tank 1 are liquid tightly sealed.

The stay 26 after assembly can be removed by hooking a general-purpose tool such as a screwdriver on the window portion 267a and pulling it in the direction opposite to the arrow A in FIG. As a result, the flange body 22 and the tube 24 can be attached and detached. According to the fuel tank flange of the first embodiment, since the flange main body 22 and the tube 24 are separate bodies, the flange main body 22 and the tube 24 may be molded separately, so that the structure of the molding die can be simplified. Since various shapes of flanges can be obtained by combining the flange body 22 and the tube 24, it is possible to reduce the types of molding dies. Further, when the molded body is handled, if the flange body and the tube are integrally molded, the tube projects from the flange body, and this tube portion is easily damaged. However, by forming the flange body 22 and the tube 24 separately, Fuel tank 1 to prevent damage to 24
The inner and outer sealing properties can be improved.

Since the stay 26 is made of an elastic resin, it can be easily assembled by utilizing its spring property. Also,
As the front and back sides are plate-shaped members with the same shape, it is easy to assemble. Further, the stay 26 is formed with a window 267a for removal, so that it can be removed with a general-purpose tool. For this reason, the flange body 22 and the tube 24 can be detached from each other, so that the tube 2 can be used during molding, assembly, and use.
If 4 is damaged, remove tube 24 and replace,
The flange body 22 can be continuously used. Unlike the case where the flange body and the tube are integrally molded, according to the first embodiment, the tube 2 is attached to the flange body 22.
4 can be rotatably assembled, so the tube 24
The degree of freedom in the take-out direction of is expanded.

The tube 24 is assembled by a simple method of inserting the tube 24 into the through hole 223 of the flange main body 22 from above and then inserting the stay 26 from laterally. Since the introduction portion 223a is formed at the tube insertion side end of the through hole 223, the tube 24 can be easily inserted. Since the tube 24 is assembled in a state of being pressed against the flange main body 22 side, the inside of the fuel tank 1 is protected by the O-ring 244 sandwiched between the lower end surface 243b of the collar portion 243 and the end surface 223b of the through hole 223. The outside is liquid-tightly sealed.

In the first embodiment described above, the fuel tank flange 21 provided with one tube 24 has been described. However, the present invention includes a flange main body and a tube as in an in-tank type fuel pump device compatible with a returnless system. It is also applicable to a fuel tank flange having two or more connecting portions. In that case, use the same number of stays as the number of connecting sections between the flange body and the tubes to assemble the tubes to the flange body, or use one stay with multiple tube holding sections to flange the tubes at multiple connecting sections. Can be attached to the body.

(Second Embodiment) FIGS. 11 to 13 show a fuel tank flange according to a second embodiment of the present invention. The second embodiment is an example in which the shapes of the stay and the clamp portion are different from those of the first embodiment. The fuel tank flange 121 is
The flange body 122, the tube 24, and the stay 36 are included. A disc portion 221 having a through hole 223 is formed at the upper end of the flange body 122.

The clamp portions 324 are provided on both sides of the through hole 223, and have a square columnar column portion 325 and the column portion 3.
25 has a stay locking portion 326 extending in a rectangular shape from the upper end of 25 in parallel with the disc portion 221 except for the through hole 223 side. The stay 36 as a fixing member is a plate-shaped member made of a resin having elasticity and having the same shape on the front and back sides. The stay 36 has a base 367 having a window 367 for removal and two springs 365 extending from both ends of the base 367. Have and. Spring part 3
65 includes the second clamp engaging portion 3 in order from the base 367 side.
63, a tube holding portion 361, and a first clamp locking portion 362 are formed. The interval between the wall surfaces of the first clamp engaging portion 362 and the second clamp engaging portion 363 facing each other is slightly larger than the width of the column portion 325. The leading end of the first clamp engaging portion 362 is formed with an introducing portion 364 extending in a direction facing each other. The distance between the ends of the introduction portion 364 is smaller than the width of the column portion 325, and
The end portion of the No. 4 side opposite to the base portion 367 is an inclined surface 364a inclined toward the base portion 367 side. In addition, the tube holder 361
Is an arc shape having a curvature slightly larger than the outer diameter of the large-diameter straight pipe portion 246. The configuration of the other parts is substantially the same as that of the first embodiment.

When the tube 24 is attached to the flange body 122, the through hole 2 is inserted from the direction perpendicular to the disc portion 221.
The end portion of the large diameter straight pipe portion 246 on the fuel tank side is inserted into No. 23. Next, while pressing the tube 24 toward the flange body 122 side, the stay 36 is moved in the direction of arrow D in FIG. 11 between the lower end surface 324b of the clamp portion 324 and the upper end surface 243a of the collar portion 243 shown in FIG. One clamp locking part 3
Insert from the 62 side.

At this time, the spring portion 365 is displaced by the column portion 325 and the large-diameter straight pipe portion 246 in the arrow d direction shown in FIG.
Since the displacement in the arrow d direction is smoothly performed by the inclined surface 364a, the stay 36 can be easily inserted. When the stay 36 is inserted to a predetermined position, the spring portion 365 returns to the position where no external force is applied, whereby the tube 24 is rotatably attached to the flange body 122.

With the flange 121 of the second embodiment, the same effect as that of the first embodiment can be obtained. Further, since the stay 36 is inserted from the direction perpendicular to the stay 26 of the first embodiment, the stay 26 is fitted to the space above the disc portion 221.
It is possible to select one that is easy to assemble from the stays 36. (Third Embodiment) FIGS. 14 to 24 show a fuel tank flange according to a third embodiment of the present invention. In the third embodiment,
This is an example in which a stay having a shape that covers a large-diameter straight pipe portion is used instead of the plate-shaped stay.

Fuel tank flange 421 of the third embodiment
Consists of a flange body 422, a tube 44 and a stay 46. Flange body 422 As shown in FIGS. 17 and 18, the flange body 422
A disk portion 221 having a through hole 223 is formed at the upper end of the. On both sides of the through-hole 223, clamp portions 424, which extend in parallel with each other and have an inverted L-shaped cross section, are provided back to back. The configuration of the other parts is substantially the same as that of the first embodiment.

Tube 44 As shown in FIGS. 19 to 21, the tube 44 is a small diameter straight pipe portion 245 in which a quick connector fixing portion 242 is formed.
And an L-shaped tubular body including a large-diameter straight tubular portion 446 on which a collar portion 243 is formed. From the collar portion 243, the small diameter straight pipe portion 2
A quick connector protection portion 447 having a tip bent toward the small-diameter straight pipe portion 245 side extends in parallel with 45. Further, a columnar protrusion 448 is formed on the top surface of the large diameter straight pipe portion 446. The configuration of the other parts is substantially the same as that of the first embodiment.

Stay 46 As shown in FIGS. 22 to 24, a stay 46 as a fixing member includes a cover portion 461 having a bottomed cylindrical shape, and a cover portion 461 provided on the outer periphery of the cover portion 461 at 180 ° intervals.
And an arm portion 462 protruding in the radial direction. Cover part 4
A cutout portion 463, which extends from one end to the other end in the axial direction of the cover portion 461 and is slightly wider than the diameter of the small diameter straight pipe portion 245, is provided between the two arm portions 462 at one location on the outer periphery of the cover portion 461. . Further, a through hole 464 having a diameter slightly larger than the diameter of the protrusion 448 is provided on the bottom surface of the cover portion 461.
The arm portion 462 extends from the outer periphery of the cover portion 461 in an inverted L shape with a cross section facing each other, and a clamp engagement portion 465 that is bent toward the cover portion 461 is formed at the tip. The distance between the tips of the clamp engaging portions 465 facing each other is
It is smaller than the width of the clamp portion 424. Further, an inclined surface 465a that is inclined toward the cover portion 461 is formed at the end portion of the clamp engaging portion 465 on the flange body 422 side.

As shown in FIGS. 14 to 16, the tube 4
4 is attached to the flange main body 422, the disc portion 221
To the through hole 223 from the direction perpendicular to the large diameter straight pipe portion 446.
Insert the fuel tank side end of the. Then, the cover portion 46
The large-diameter straight pipe portion 446 is housed in 1 and the stay 46 is assembled so that the small-diameter straight pipe portion 245 extends outward from the cutout portion 463. At this time, when the stay 46 is pressed from the same direction as the assembling direction of the tube 44, the arm portion 462 causes the cover portion 461.
To the outer side in the radial direction as indicated by the dotted line in FIG. Since the displacement is smoothly performed by the inclined surface 465a, the stay 46 can be easily inserted. When the stay 46 is inserted to a predetermined position, the arm portion 462 returns to the position where no external force is applied. Positioning of the tube 44 and the stay 46 is performed by the cutout portion 463, the small diameter straight pipe portion 245, and
It is performed by the protrusion 448 and the through hole 464.

The tube 44 is fixed to the flange body 422 when the lower end surface 424a of the clamp portion 424 and the upper end surface 465b of the clamp engaging portion 465 contact each other. Further, the O-ring 244 is the lower end face 2 of the collar 243.
It is sandwiched between 43b and the end surface 223b of the through hole 223, whereby the inside and outside of the fuel tank 1 are liquid-tightly sealed.

According to the flange 421 of the third embodiment, in addition to the effects of the first embodiment, the tube 44 and the stay 46 are provided.
Since both are assembled from the vertical direction of the disc portion 221, the assembling operation is easy. Further, the stay 46 can be easily assembled even when the space around the through hole 223 is small.
Movement of the tube 44 in the rotational direction is restricted by the cutout portion 463, so that the direction in which the tube 44 is taken out can be determined. Furthermore, since a slight gap is provided between the small diameter straight pipe portion 245 and the cutout portion 463, even when the tube 44 or the stay 46 is distorted, the strain is absorbed by the above-mentioned gap. The ring 244 has an effect of maintaining the sealing property between the inside and the outside of the fuel tank 1.

Further, the quick connector protection portion 447 extending from the flange portion 243 allows the quick connector protection portion 447 to be attached to the tip of the quick connector protection portion 447 when a load is applied from the direction of arrow E shown in FIG. Are abutted against each other, it is possible to prevent excessive force from being applied to the vicinity of the joint between the small-diameter straight pipe portion 245 and the large-diameter straight pipe portion 446 and prevent damage to the tube 44.

Although the quick connector protection portion 447 is integrally formed with the tube 44 in the third embodiment, the quick connector protection portion may be integrally formed with the stay or the flange body. (Fourth Embodiment) A fourth embodiment of the present invention is shown in FIGS. This 4th Example is an example which fixes a tube to a flange main body, without using a stay.

Fuel tank flange 521 of the fourth embodiment
Consists of a flange body 522 and a tube 54. Flange main body 522 At the upper end of the flange main body 522, a disc portion 221 having a through hole 223 is formed. On both sides of the through hole 223, clamp portions 524 are provided which extend in parallel to each other and perpendicular to the disc portion 221 and whose tips are bent in a hook shape toward the through hole 223 side. The configuration of the other parts is substantially the same as that of the first embodiment.

Tube 54 The tube 54 is an L-shaped tubular body composed of a small-diameter straight pipe portion 245 having a quick connector fixing portion 242 formed therein and a large-diameter straight pipe portion 546 having a collar portion 543 formed therein. Collar 54
Two clamp holding portions 544 are provided on the side of the non-circular disc portion 221 of No. 3 as fixing members that extend at 180 ° intervals in the radial direction of the large diameter straight pipe portion 546. Clamp holding part 5
An inclined surface 54 inclined toward the disc portion 221 side toward the inner diameter side of the large-diameter straight pipe portion 546 is provided at the end of the anti-disc portion 221 on the side of the disc portion 221.
4a is formed, and side walls 544b project from both sides of the inclined surface 544a toward the side opposite to the disc 221. Side wall 5
The interval H of 44b is slightly wider than the width h of the clamp portion 524. The configuration of the other parts is substantially the same as that of the first embodiment.

When the tube 54 is attached to the flange body 522, the through hole 2 is inserted from the direction perpendicular to the disc portion 221.
The end portion of the large diameter straight pipe portion 546 on the fuel tank side is inserted into No. 23. At this time, when the tube 54 is pressed from the direction perpendicular to the disc portion 221, the clamp portion 524 is displaced to the outside in the radial direction of the large diameter straight pipe portion 546 as shown by the dotted line in FIG. When the tube 54 is inserted to a predetermined position, the clamp portion 524 returns to the position where no external force is applied.

The lower end surface 524a of the clamp portion 524 and the inclined surface 544a of the clamp fixing portion 544 contact each other, so that the tube 54 is fixed to the flange main body 522. The displacement of the tube 54 in the rotation direction is determined by the inclined surface 544.
It is regulated by the side walls 544b provided on both sides of a.
Further, the O-ring 244 is sandwiched between the lower end surface 543b of the collar portion 543 as the end surface of the tube 54 and the end surface 223b of the through hole 223, so that the inside and the outside of the fuel tank 1 are liquid-tight. Sealed.

According to the flange 521 of the fourth embodiment, in addition to the effect of the third embodiment, there is an effect that the number of parts and the number of assembling steps can be reduced because the stay is not used. Further, since a slight gap is provided between the side wall 544b and the side surface of the clamp portion 524, even when the tube 54 or the flange main body 522 is distorted, the strain is absorbed by the above-mentioned gap. The ring 244 has an effect of maintaining the sealing property between the inside and the outside of the fuel tank 1.

In the first to fourth embodiments, the fuel tank flange provided with the tube used as the fuel pipe for pumping the fuel pumped up by the fuel pump to the internal combustion engine has been described. Can also be applied to a fuel tank flange provided with tubes used for other fuels communicating with the inside and outside of the fuel tank, such as fuel for returning to the fuel tank, breather, canister, and rollover valve.

Although the resin tubes and stays have been described in the first to fourth embodiments, the tubes and stays may be made of metal. When the tube is made of metal, the tip of the tube may be processed into a shape such as a bulge, spool or curl.

[Brief description of drawings]

FIG. 1 is a plan view showing a fuel tank flange according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a view on arrow III in FIG.

FIG. 4 is a plan view showing a flange body of a fuel tank flange according to a first embodiment of the present invention.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a plan view showing a tube of a fuel tank flange according to the first embodiment of the present invention.

FIG. 7 is a view taken in the direction of the arrow VII in FIG. 6;

8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a plan view showing the stay of the fuel tank flange according to the first embodiment of the present invention.

FIG. 10 is a cross-sectional view showing a state in which the fuel tank flange according to the first embodiment of the present invention is attached to the fuel tank.

FIG. 11 is a plan view showing a fuel tank flange according to a second embodiment of the present invention.

12 is a sectional view taken along line XII-XII of FIG.

FIG. 13 is a view on arrow XIII in FIG.

FIG. 14 is a plan view showing a fuel tank flange according to a third embodiment of the present invention.

15 is a sectional view taken along line XV-XV in FIG.

16 is a view taken in the direction of the arrow XVI in FIG.

FIG. 17 is a plan view showing a flange body of a fuel tank flange according to a third embodiment of the present invention.

18 is a sectional view taken along line XVIII-XVIII in FIG.

FIG. 19 is a plan view showing a tube of a fuel tank flange according to a third embodiment of the present invention.

20 is a view on arrow XX in FIG.

21 is a sectional view taken along line XXI-XXI of FIG.

FIG. 22 is a plan view showing a stay of a fuel tank flange according to a third embodiment of the present invention.

23 is a sectional view taken along line XXIII-XXIII of FIG.

24 is a view taken along line XXIV of FIG.

FIG. 25 is a plan view showing a fuel tank flange according to a fourth embodiment of the present invention.

FIG. 26 is a sectional view taken along line XXVI-XXVI of FIG. 25.

FIG. 27 is a view on arrow XXVII in FIG. 25;

[Explanation of symbols]

 1 Fuel Tank 3a Opening 21 Flange (Flange for Fuel Tank) 22 Flange Main Body 24 Tube 26 Stay (Fixing Member) 36 Stay (Fixing Member) 44 Tube 46 Stay (Fixing Member) 54 Tube 121 Flange (Flange for Fuel Tank) 122 Flange body 221 Disc portion (outer surface of fuel tank) 223 Through hole 223b End surface (end surface of flange body) 224 Clamp portion 242 Quick connector fixing portion 243 Collar portion 243b Lower end surface (tube end surface) 244 O-ring (seal member) 245 Small-diameter straight pipe part 246 Large-diameter straight pipe part 261 Tube holding part 263 Clamp locking part 324 Clamp part 324b End face (end face of flange body) 421 Flange (flange for fuel tank) 422 Flange body 447 Quick connector maintenance Part 448 projecting 462 arm portion 464 through hole 521 flange (fuel tank flange) 522 flange main body 524 clamp portion 543 flange portion 543b lower end surface (end surface of the tube) 544 clamp holder (fixing member)

Claims (4)

[Claims] 1. A flange main body having a through hole that covers the opening of the fuel tank and divides the inside and the outside of the fuel tank and connects the inside and the outside of the fuel tank, and the through hole. A tube that is inserted from a direction substantially perpendicular to the end surface of the flange main body outside the fuel tank and can be locked in the flange main body in the insertion direction; A fuel tank flange, comprising: a seal member that is sandwiched between the two to seal the inside and the outside of the fuel tank; and a fixing member that tightens the seal member in the direction of insertion into the flange body. 2. The flange for a fuel tank according to claim 1, wherein the tube and the flange body are detachable. 3. The flange for a fuel tank according to claim 1, wherein the fixing member is integral with the flange body. 4. The fuel tank flange according to claim 1, wherein the fixing member is separate from the flange body.