JP2002137641A - Connector for fuel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector connecting a tube to a fuel tank while securing a sure sealing condition. SOLUTION: This connector A is arranged in an annular projection opening part Ba of the fuel tank B protruded outward for communicating the fuel tank B and the tube C to be connected to the fuel tank B with each other. The connector A is provided with a cylindrical part 1, a flange part 2 arranged on the outer circumference side of the cylindrical part 1, and an annular projection part 3 arranged in the circumference side part of the flange part 2 and protruded toward a tank face Bc of the fuel tank B. The annular projection part 3 is welded, hooked, or screwed to the fuel tank B so that a sealing material 50 arranged between the flange part 2 and an opening edge part Bb of the annular projection opening part Ba is pressed to be abutted to an opening edge end Bb of the annular projection opening part Ba by means of the flange part 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel tank connector which is securely mounted on a fuel tank.

[0002]

2. Description of the Related Art Generally, a fuel tank is provided with a fuel supply pipe, a pipe for guiding gas generated from the fuel, and the like, connected to the tank.

[0003] As a connection structure for connecting a pipe to such a fuel tank, Japanese Utility Model Application Laid-Open Publication No. 5-10059 discloses a structure in which the evaporation valve shown in FIG. 12 is attached to the fuel tank.

[0004] The structure of mounting the evaporation valve 110 to the fuel tank 100 shown in FIG. 12 is a flange 10 provided on the outer periphery of the upper end of a cylindrical wall 101 of the fuel tank 100.
A flange 111 provided on the outer periphery of the evaporation valve 110 is mounted on the upper surface 2, and the flange 102 and the flange 111 are stopped by an annular body 120.

An annular body 120 used to fasten the flange portion 102 and the flange portion 111 is composed of the flange portion 102 and the flange portion 11.
1 and a cylindrical portion 121 which is loosely fitted to the outer periphery of
1 and a flange 122 provided on the inner side of the upper end, and the total thickness of the flange 102 and the flange 111 from the lower surface of the flange 122 of the cylindrical portion 121 downward. A plurality of slits 123 are provided in the circumferential direction at substantially equal distances in the circumferential direction and are spaced apart from each other. The annular body 120 is disposed from the upper surface side of the flange 111, and the annular body 120 is provided. The pair of slits 12 provided to form a pair above and below the cylindrical portion 121 of the pair of slits 120.
The portion between the three is projected inside the inner peripheral surface of the cylindrical portion 121 by caulking, so that the evaporation valve 110 is attached to the fuel tank 100. In addition, 1
Reference numeral 30 denotes an O interposed between the flange 102 and the flange 111.
Shows a ring.

[0006]

The mounting structure of the evaporation valve having such a structure to the fuel tank is the same as that of the ring 120
Must be manufactured and prepared with dimensional accuracy, which has the disadvantage of increasing the manufacturing cost.
The interval between the lower surface of the flange 122 in the ring body 120 and the slit 123 is equal to the distance between the flange 102 and the flange 1.
If the total thickness of the ring 11 is smaller than the total thickness of the ring 120, the evaporation valve 110 cannot be attached to the fuel tank 100 by the ring 120, and the flange 12
If the distance from the lower surface of the second to the slit 123 is larger than the total thickness of the flange 102 and the flange 111, the evaporation valve 110 cannot be securely attached to the fuel tank 100 in a sealed state. There was a defect.

Further, the evaporation valve 11 having such a configuration
In the mounting structure of the cylindrical portion 121 between the pair of slits 123, the cylindrical portion 121 peripheral side portion 121a to be caulked out and the cylindrical portion 121 peripheral side portion 121a, The distance between the flange 122 and the flange 122 cannot be reduced, and the O-ring 130 cannot be assembled between the flange 102 and the flange 111 so as to press the O-ring 130.

The present invention is to solve the problem in the conventional mounting structure, and has a simple structure in which various pipes can be connected to an annular projecting opening of a fuel tank in a reliable sealing state. The purpose is to provide connectors for tanks.

[0009]

In order to achieve the above object, the present invention provides the invention according to claim 1 in an annular projecting opening of a fuel tank which is provided so as to project outward. A connector for connecting the fuel tank and a pipe connected to the fuel tank in a communication state, the connector comprising: a tubular portion; and a flange portion provided on an outer peripheral side of the tubular portion. And an annular projecting portion provided on a peripheral side of the flange portion so as to project toward a tank surface of the fuel tank, and an opening of the flange portion and the annular projecting opening portion is provided. The annular protrusion is welded to the fuel tank so that a seal member provided between the fuel tank and the edge is pressed against the opening edge of the annular protrusion opening by the flange. As a fuel tank connector.

[0010] In the fuel tank connector thus configured, various pipes are connected to the fuel tank.
It can be easily and reliably provided in a sealed state.

In order to achieve the above object, the invention according to claim 2 is provided in an annular projecting opening of a fuel tank which is provided so as to protrude outwardly. A connector for connecting a pipe connected to the fuel tank in a communication state, the connector comprising: a tubular portion;
A flange portion provided on the outer peripheral side of the cylindrical portion, and an annular projecting portion provided on the peripheral side of the flange portion so as to protrude along the annular projecting portion of the annular projecting opening. The sealing member provided between the flange-shaped portion and the opening edge of the annular projecting opening is pressed against the opening edge of the annular projecting opening by the flange-shaped portion. A connector for a fuel tank, wherein the one-side engaging portion provided on the annular projecting portion is hooked on the other engaging portion provided on the annular projecting portion of the annular projecting opening, and the fuel-tank connector is provided. There is.

In the fuel tank connector thus configured, various pipes are connected to the fuel tank.
It can be easily and reliably provided in a sealed state.

In order to achieve the above-mentioned object, the invention according to claim 3 is provided by providing an annular projecting opening of a fuel tank provided in an outwardly projecting state with the fuel tank and the fuel tank. A connector for connecting a pipe connected to the fuel tank in a communication state, the connector comprising: a tubular portion;
A flange portion provided on the outer peripheral side of the cylindrical portion, and an annular projecting portion provided on the peripheral side of the flange portion so as to protrude along the annular projecting portion of the annular projecting opening. The sealing member provided between the flange-shaped portion and the opening edge of the annular projecting opening is pressed against the opening edge of the annular projecting opening by the flange-shaped portion. Screwing the screw portion provided in the annular projecting portion to the screw portion provided in the annular projecting portion of the annular projecting opening,
A fuel tank connector provided on the fuel tank.

[0014] In the fuel tank connector thus configured, various pipes are connected to the fuel tank.
It can be easily and reliably provided in a sealed state.

Further, in order to achieve the above object, the invention of claim 4 is replaced by the invention of claim 1, 2 or 3
In the invention described in the above, the connector further includes a gas barrier body portion made of a gas-barrier synthetic resin integrally provided with a tubular portion and a flange portion provided on the outer peripheral side of the tubular portion, and the gas barrier. The fuel tank connector is characterized in that the flange portion of the body portion presses the sealing material against the opening edge.

In the fuel tank connector having the above-described structure, it is possible to effectively reduce the leakage of the evaporative gas from the fuel introduced into the tank at the connector portion, in addition to the above-mentioned features. it can.

In order to achieve the above object, the invention according to claim 5 is replaced by the invention according to claim 4,
The gas barrier body is made of polyacetal, which is a connector for a fuel tank.

In the fuel tank connector thus configured, a fuel tank connector having a typical gas barrier function in addition to the above-described features can be formed.

Further, in order to achieve the above object, the invention according to claim 6 is replaced by the invention according to claim 1, claim 4 or claim 5.
In the invention described in (1), at least the annular projecting portion of the connector is made of a synthetic resin that can be welded to the fuel tank.

In the fuel tank connector thus configured, the fuel tank connector can be easily and reliably mounted on the fuel tank in addition to the above features.

Further, in order to achieve the above-mentioned object, the invention according to claim 7 is replaced by the invention according to claim 1, claim 2, claim 3,
In the invention according to claim 4, 5, or 6, the connector is a connector for a fuel tank, wherein the connector is a connector for connecting a fuel supply pipe.

In the fuel tank connector configured as described above, the fuel supply pipe can be connected to the fuel tank easily and securely in a sealed state in accordance with the above features.

Further, in order to achieve the above object, the invention of claim 8 is replaced by the invention of claims 1, 2, 3,
In the invention according to claim 4, 5, or 6, the connector is a connector for a fuel tank, wherein the connector is a connector for connecting a ventilation pipe.

In the fuel tank connector thus configured, the vent pipe can be easily and securely connected to the fuel tank in accordance with the above-mentioned features.

Further, in order to achieve the above object, the invention of claim 9 is replaced by the invention of claim 1, claim 2, claim 3,
A fuel tank connector according to any one of claims 4, 5, 6, or 8, wherein the connector includes a fuel cut-off valve.

In the fuel tank connector thus configured, the pipe and the fuel tank can be easily and reliably sealed in accordance with the above-mentioned features by a connector having a fuel cut-off valve. Can be connected.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a fuel tank connector A according to each typical embodiment of the present invention will be described in detail.

FIGS. 1 to 6 show a fuel tank connector A according to a first typical embodiment.
In FIG. 1, a state before the fuel tank connector A according to this embodiment is mounted on the fuel tank B is shown by a sealing material 5.
0 is mounted on the annular projecting opening Ba, and is shown in a longitudinal section together with a part of the fuel tank B. In FIG. The state where the fuel tank connector A is attached to the surface of the fuel tank B is shown as viewed from above. FIG. 3 shows a state in which the fuel tank connector A is provided in the fuel tank B in a longitudinal section together with a part of the fuel tank B. 4 to 6 show a sealing material 5 used for mounting the fuel tank connector A.
0 is shown in FIG. 4, this is viewed from below, FIG. 5 is a longitudinal section, and FIG. 6 is an enlarged section.

FIGS. 7 to 9 show a fuel tank connector A according to a second typical embodiment.
FIG. 7 shows a state in which the fuel tank connector A according to the present embodiment is mounted on the fuel tank B in a longitudinal section together with a part of the fuel tank B. FIG. A shows a state in which A is provided in a fuel tank B as viewed from above. Further, in FIG. 9, a main part in a state where the fuel tank connector A is provided in the fuel tank B is shown by a cross section of the fuel tank B.

FIGS. 10 and 11 show a typical fuel tank connector A according to a third embodiment. FIG. 10 shows the fuel tank connector A according to this embodiment. FIG. 11 shows a state in which the fuel tank connector A is mounted on the fuel tank B as viewed from above, in a longitudinal section of a state where the fuel tank B is mounted, together with a part of the fuel tank B.

A fuel tank connector A according to a typical embodiment of the present invention is provided in an annular protruding opening Ba of a fuel tank B provided so as to protrude outward. And a pipe C connected to the fuel tank B in a communication state. The connector A includes a tubular portion 1 and a flange-shaped portion provided on an outer peripheral side of the tubular portion 1. And an annular protruding portion 3 provided on a peripheral side portion of the flange portion 2 so as to protrude toward the tank surface Bc of the fuel tank B. The annular protruding portion is formed such that the sealing material 50 provided between the annular protruding opening Ba and the opening edge Bb of the annular protruding opening Ba is pressed against the opening edge Bb ′ of the annular protruding opening Ba by the flange portion 2. 3 is attached to the fuel tank B by welding. There is it.

A fuel tank connector A according to another typical embodiment of the present invention is provided in an annular projecting opening Ba of a fuel tank B provided so as to protrude outward. A connector A for connecting the fuel tank B and a pipe C connected to the fuel tank B in communication with each other. The connector A is provided on the cylindrical portion 1 and on the outer peripheral side of the cylindrical portion 1. And an annular projecting portion B of the annular projecting opening Ba on the peripheral side of the flange 2.
a sealing member 50 provided between the flange 2 and the opening edge Bb of the annular projecting opening Ba.
The one-side engaging portion 3a provided on the annular projecting portion 3 is formed so as to press the annular projecting portion Ba against the opening edge Bb 'of the annular projecting opening Ba by the annular projecting portion Ba. It is configured to be hooked to the other engagement portion Be provided in the portion Ba ′ and to be provided in the fuel tank B.

A fuel tank connector A according to still another typical embodiment of the present invention is provided in an annular projecting opening Ba of a fuel tank B provided so as to protrude outward. The fuel tank B and the fuel tank B
A connector A for connecting a pipe C connected to the connector A in a communication state, the connector A having a tubular portion 1 and a flange portion 2 provided on the outer peripheral side of the tubular portion 1. In addition, an annular protrusion 3 is provided on the peripheral side of the flange portion 2 so as to protrude along the annular protrusion Ba 'of the annular protrusion opening Ba. The annular protruding portion 3 is so formed that the sealing material 50 provided between the protruding opening Ba and the opening edge Bb is brought into press contact with the opening edge Bb ′ of the annular protruding opening Ba by the flange portion 2. The provided screw portion 3e is screwed to a screw portion Bd provided in the annular projecting portion Ba 'of the annular projecting opening Ba, and is provided in the fuel tank B.

The fuel tank connector A thus configured has a feature that various pipes C can be easily and securely provided in the fuel tank B in a sealed state. are doing.

The fuel tank connector A is typically provided with various characteristics required for the fuel tank connector A, such as fuel oil resistance, and the fuel tank B has an opening Bh. Various types of annular projecting openings Ba provided in the fuel tank B, more specifically, a short cylindrical annular projecting opening Ba provided in the fuel tank B in an inverted punch shape, and the like. Various pipes C provided in various annular projecting openings Ba configured as relatively long cylindrical annular projecting openings Ba to be connected to the fuel tank B, for example, various vent pipes, fuel It is used for connection to the fuel tank B such as a supply pipe.

The fuel tank connector A is
Various valve mechanisms such as the fuel tank connector A, for example,
It is used to connect various pipes C to the fuel tank B with the fuel cutoff valve 30 or the like or without these valve mechanisms.

The fuel tank B provided with the fuel tank connector A may be, for example, the connector A
Any material may be used as long as it can be provided, and any form may be provided. For example, the connector A is made of various materials such as a fuel tank B made of a synthetic resin, a fuel tank B made of a metal, and a fuel tank B made of a metal part and another part made of a synthetic resin. A pipe C can be connected to the fuel tank B having various structures by using the fuel tank connector A.

Further, the connector A may be a connector A integrally provided with the annular projecting portion 3.
The connector A may be provided with the annular protrusion 3 separately provided.

Further, the fuel tank connector A having the above-described configuration is such that the fuel tank connector A is
Gas barrier body part 1 made of a gas-barrier synthetic resin and integrally comprising a flange-shaped part 12 provided on the outer peripheral side of the cylindrical part 11.
0, and the flange member 12 of the gas barrier body 10 divides the sealing material 50 into the opening edge B.
By being configured so as to be pressed against b ′, it is possible to effectively reduce the leakage of the evaporative gas from the fuel introduced into the fuel tank B at the connector portion, in addition to the above features.

The gas barrier body 10 constituting the connector A is made of a material which is suitable for the structure of the connector A and which does not easily transmit various types of evaporative gas generated from fuel and brought into the fuel tank B. It may be made of any kind of synthetic resin, and can be made of various kinds of gas barrier synthetic resins.

As the gas barrier synthetic resin constituting the gas barrier body 10, a sample made of the gas barrier synthetic resin having a thickness of 0.97 mm is prepared by using a regular gasoline (JI
SK2202 No. 2 equivalent) Diameter 3 containing 4.6 g
An 8 mm aluminum cup was placed and fixed on the aluminum cup so as to seal the opening, and at a test temperature of 60 ° C.
The weight loss after 8 hours was 11.341c.
In a gasoline permeability test (gasoline permeability test according to JISZ 0208-76) in which the permeation amount of a m ² permeation area for 48 hours is measured by a gas phase method, the permeation amount is 156.
Preferably, the gas barrier synthetic resin has a permeation amount of less than mg.

In the fuel tank connector A having the above-described structure, the gas barrier body 10 is made of polyacetal, thereby providing a fuel tank connector having a typical gas barrier function in addition to the above features. can do.

Further, in the fuel tank connector A having such a configuration, at least the annular projecting portion 3 of the connector A is made of a synthetic resin which can be welded to the fuel tank B, so that the fuel tank connector A is formed. The fuel tank B can be easily and reliably provided.

In the fuel tank connector A having the above-mentioned structure, the connector A is used as the connection connector A for the fuel supply pipe. The fuel supply pipe can be connected to the fuel tank B.

In addition, the fuel tank connector A having the above-mentioned structure can be easily and reliably sealed in accordance with the above features by using the connector A as the connector A for connecting the ventilation pipe. A vent pipe can be connected to the fuel tank B.

In addition, the fuel tank connector A having the above-described configuration is provided with the fuel cut-off valve 4 so that the connector A can be easily and reliably sealed in accordance with the above features. , Pipe C and fuel tank B can be connected by a connector A having a fuel cut-off valve 4.

(1) Connector A for Fuel Tank According to First Embodiment First, the connector A for fuel tank according to the first embodiment shown in FIGS. 1 to 6 will be specifically described. The connector A according to the illustrated example has various pipes C
And, in particular, shown as a connector A with a typical fuel cut-off valve 4.

The connector A according to the illustrated example is provided in an annular projecting opening Ba of a fuel tank B provided so as to protrude outward, and is connected to the fuel tank B and the fuel tank B. A connector A for connecting a pipe C in communication with the pipe C. The connector A has a tubular portion 1 and a flange portion 2 provided on an outer peripheral side of the tubular portion 1. Annular protrusion 3 provided on the peripheral side of the shape 2 so as to protrude toward the tank surface Bc of the fuel tank B
A sealing material 5 provided between the flange 2 and the opening edge Bb of the annular projecting opening Ba.
The annular projection 3 is welded to the fuel tank B so as to press the annular projection 0 against the opening edge Bb ′ of the annular projection opening Ba with the flange 2. Accordingly, various pipes C can be easily and reliably provided in the fuel tank B in a sealed state.

The connector A according to the illustrated example is used as a means for connecting various pipes C to the fuel tank B. In the illustrated example, a typical fuel is a typical fuel tank. This shows a connector A provided on the upper side of the fuel tank B with a cut-off valve 4 for transferring and evaporating gas and the like from the fuel to a canister and the like, and for changing the fuel level in the fuel tank B. At this time, the fuel is prevented from flowing out.

The fuel tank B provided with the connector A according to the illustrated example has at least a portion of the fuel tank B to which the annular projecting portion 3 of the connector A is welded, that is, at least an annular projecting opening Ba in the fuel tank B.
The side surface Bc of the fuel tank B is made of a synthetic resin that can be welded to the annular projecting portion 3. Typically, a gas barrier layer, that is, a permeation of evaporative gas from the fuel is formed. It is configured as having a layer that is difficult to perform.

Such a fuel tank B is more typically
It is constituted by a multi-layered synthetic resin plate having a plurality of arbitrary gas barrier layers, and the plate is so formed as to form an opening Bh of the fuel tank B by drilling the plate. Are projected outward so as to form an annular shape, the annular projecting opening Ba is formed, and the laminated end surface of the synthetic resin plate material appearing on the opening edge Bb ′ of the annular projecting opening Ba is , The sealing material 5
0.

The connector A provided in the fuel tank B has a cylindrical portion 1 and a surface which is provided on an outer peripheral side of the cylindrical portion 1 and is larger than an opening Bh surface of the annular projecting opening Ba. An annular projection 3 provided to project from the outer periphery of the flange 2 along the outer peripheral surface of the annular projection opening Ba toward the surface of the fuel tank B; A fuel cutoff valve 4 is provided, and a sealing material 50 is temporarily installed at an opening edge Bb of the annular projecting opening Ba, and the sealing material 50 is attached to the annular projecting opening by the flange 2. Part B
The fuel cut-off valve 4 is inserted into the fuel tank B from the opening Bh of the annular projecting opening Ba so as to be pressed against the opening edge Bb ′ of FIG. Annular protruding opening B
a, the annular protruding portion 3 provided on the flange portion 2 is welded to the fuel tank B in a state of being pressed against the opening edge Bb ′ of
By connecting an appropriate tube C to this connector A,
The fuel tank B and the pipe C can be connected to each other through the hole 1a.

The annular projecting opening B according to the illustrated example
a is a configuration in which an opening peripheral edge formed in a tank component plate-like material of the fuel tank B is annularly protruded outward from the fuel tank B, and the annular projecting opening Ba is Protruding from the fuel tank surface, and
The flange portion 2 is formed as a short cylindrical portion communicating with the inside of the fuel tank B, and the annular protrusion portion 3 provided on the flange portion 2 allows the annular protrusion portion Ba to be formed.
Is formed in a disk shape having a diameter capable of covering the outer peripheral side of the disk.

The connector A is more specifically
A flange 2 is integrally provided on the outer peripheral side, and the flange 2
A vertical cylindrical portion 1b provided to protrude upward from
On the upper side of the vertical cylindrical portion 1b, a horizontal cylindrical portion 1c provided to be bent at a right angle from the vertical cylindrical portion 1b, and the flange portion 2 so as to communicate with the vertical cylindrical portion 1b. A cylindrical portion 1 having a protruding cylindrical portion 1d provided so as to protrude downward from the cylindrical portion, and having a hole 1a communicating between the vertical cylindrical portion 1b and the protruding cylindrical portion 1d; Disk-shaped flange portion 2 provided to protrude laterally from the outer peripheral side of the lower portion of the vertical cylindrical portion 1b in the cylindrical portion 1, and downward from the outer peripheral portion of the flange portion 2 That is, the fuel tank B
And an annular projecting portion 3 provided integrally with the flange portion 2 so as to project toward the tank surface Bc.
The fuel cut-off valve 4 is provided in this, that is, the lower surface side of the flange portion 2, that is, the projecting cylindrical portion 1
d, a cylindrical cylindrical portion 13 provided so as to protrude integrally from the flange portion 2, and a locking projection provided at a lower end edge of the cylindrical portion 13. A cover body 20 provided with the hook 13a hooked into the hook hole 20c, a valve seat 1e provided as a truncated cone-shaped recess provided at the opening end of the protruding cylindrical portion 1d, and a flange portion 2 and a float 30 which is accommodated in the float chamber constituted by the cylindrical portion 13 and the lid 20 so as to be vertically movable in accordance with a change in the liquid level of the liquid flowing into the float chamber. Then, the valve body 30a integrally provided on the upper side of the float 30 is brought into close contact with the valve seat 1e as the float 30 moves upward due to a change in the fuel level of the float 30. As a configuration for closing the hole 1a of the cylindrical portion 1 Ri, and the cylindrical portion 13 constituting the fuel cut-off valve 4, the annular protruding portion 3
Is formed as an annular pressing surface 2a that presses the sealing material 50 against the surface of the opening edge Bb ′ of the annular projecting opening Ba.

The connector A has the gas barrier body 10
It is provided with. The gas barrier body 10 provided in the connector A is made of various gas-barrier synthetic resins, such as polyacetal, as a synthetic resin through which a gas introduced into the fuel tank B, typically, a gas evaporated from the fuel is hardly permeated. In the illustrated example, a cylindrical portion 11 and a flange portion 1 provided to protrude laterally from the outer peripheral side of the cylindrical portion 11 are provided.
2 and a tubular portion 13 that is provided so as to protrude downward from the lower surface side of the flange portion 12 and that constitutes the fuel cut-off valve 4.

The cylindrical portion 11 is provided with a vertical cylindrical portion 11a provided so as to protrude above the flange portion 12, and a horizontal cylindrical portion provided at right angles to the vertical cylindrical portion 11a. And a protruding cylindrical portion 11c provided continuously with the vertical cylindrical portion 11a so as to protrude below the flange-shaped portion 12. The protruding cylindrical portion 11c and the horizontal cylinder are provided. Hole 1a which constitutes the hole 1a between the hole 1a
1d, and the projecting cylindrical portion 11c is provided.
Is provided with a valve seat 1e as a truncated conical recess provided at the opening of the hole 11d.

Further, the flange portion 12 constituting the gas barrier body portion 10 is provided integrally with the tubular portion 12 so as to protrude outward from the outer peripheral side of the tubular portion 11. From the outer peripheral side of the cylindrical portion 11, the fuel tank B
Is provided so as to extend over the opening edge Bb ′ of the annular projecting opening Ba at a position larger than the opening Bh of the annular projecting opening Ba.
More typically, it is configured to form a circular plate having a diameter larger than the diameter of the circular opening Bh in the annular projecting opening Ba having a cylindrical configuration.

The cylindrical portion 13 constituting the gas barrier body 10 is formed on the side of the flange portion 12 facing the annular projecting opening Ba provided in the fuel tank B, that is, on the projecting cylindrical portion 11c. It is provided so as to protrude downward from the flange-shaped portion 12 on the protruding side, that is, toward the fuel tank B side in a ring shape. The guide rib 13 is provided so as to extend in the vertical direction on the inner peripheral surface of the cylindrical portion 13.
b, and a plurality of holes 13c are provided in a cylindrical wall of the cylindrical portion 13, and the cylindrical portion 13 is closed by the lid 20 to form a float chamber by the holes 13c. The movement of gas and the like between the inside of the fuel tank 13 and the inside of the fuel tank B can be smoothly performed.

The gas barrier body 10 is formed on the outer peripheral surface of the gas barrier body 10, in particular, on the front end 12 a of the flange 12, and on the upper side of the flange 12 from the front end 12 a of the flange 12. And an outer shell portion 40 integrally provided so as to reach the cylindrical end of the horizontal cylindrical portion 11b and further project forward from the cylindrical end, to form the cylindrical portion 1, the flange-shaped portion 2 and the annular shape. The projecting portion 3 is constituted.

The outer shell portion 40 provided in the gas barrier body portion 10 is made of a synthetic resin that can be welded to the fuel tank B. The outer shell portion 40 covers the front end portion 12a of the flange portion 12, and covers the flange portion 12a. From the tip 12a of the fuel tank B
The annular projecting portion 40b which is provided so as to integrally project toward the side of the tank surface Bc of the connector A and constitutes the annular projecting portion 3 of the connector A, and the annular projecting portion 40b provided at the distal end portion 12a. A covering portion 40a that covers the surface of the flange portion 12 and the cylindrical portion 11 that reaches the cylindrical end of the horizontal cylindrical portion 11b via the upper surface side of the flange portion 12, and from a cylindrical end of the horizontal cylindrical portion 11b Further, a cylindrical portion 40c is provided so as to protrude forward, and constitutes a cylindrical portion continuous with the horizontal cylindrical portion 11b.
The tubular portion 1, the flange portion 2, and the annular projecting portion 3 that constitute the fuel tank connector A by the gas barrier body portion 0 and the gas barrier body portion 10.

In the flange portion 2 having such a configuration,
The surface of the flange portion 2 inside the annular protrusion 3 constituted by the annular protrusion portion 40b, that is, the surface of the flange portion 2 between the annular protrusion 3 and the cylindrical portion 13. Is a ring-shaped pressing surface 2a constituted by the surface of the flange-shaped portion 12 of the gas barrier body 10. The sealing member 50 is formed by the ring-shaped pressing surface 2a having the gas barrier function.
The structure can be pressed by pressing.

The outer shell 40 together with the gas barrier body 10 provides the connector A with the desired strength, is provided integrally with the gas barrier body 10, and has a tank surface in the fuel tank B. It is made of a synthetic resin that can be welded to Bc, and is made of, for example, polyethylene.

The gas barrier body 10 and the outer shell 40
The cylindrical portion 1, the flange portion 2, the annular protruding portion 3 and the cylindrical portion 13 which are provided with, for example, the metal barrier 10 in a state where the gas barrier body 10 is inserted into a molding die. The molding resin constituting the outer shell 40 can be injected into the mold by injection or the like, and molded and provided.

Next, the lid 20 for maintaining the float 30 of the fuel cut-off valve 4 incorporated in the cylindrical portion 13 is a cylindrical peripheral wall which rises upward from the peripheral edge of the disk-shaped bottom plate 20a. The tubular portion 13 is provided in the tubular peripheral portion 20b. The tubular portion 13 is received in the tubular peripheral wall portion 20b such that the distal end of the tubular portion 13 contacts the bottom plate portion 20a. Hooking projection 13a
Is hooked on the edge of a hook hole 20c provided in the cylindrical peripheral wall portion 20b, and is assembled to the cylindrical portion 13. Further, the bottom plate portion 20a has a circular trapezoidal portion 20d provided to protrude upward,
A plurality of holes 20e vertically penetrating through the bottom plate portion 20a so that fuel, gas, and the like can easily flow into and out of the float chamber formed by the cylindrical portion 13 and the lid 20.
Is provided.

The cylindrical portion 13 and the lid 20 having the above-described configuration are provided.
The float 30 provided in the float chamber constituted by, for example, is made of polyacetal or the like, and is provided so as to be able to move smoothly in the vertical direction in accordance with a change in the fuel level in the cylindrical portion 13. In the upward movement, a valve body 30a is provided on the upper end side of the valve body 30a, which is in close contact with the valve seat 1e and closes the hole 1a of the tubular portion 1. A concave portion 30b which is recessed upward at a substantially central portion, and an annular concave portion 30b 'which is further recessed in the concave portion 30b is provided.
b has a circular trapezoidal portion 30c and a hole 30d communicating the concave portion 30b with the upper end surface of the float 30. The float 30 is divided into a float chamber constituted by the cylindrical portion 13 and the lid 20 by a compression coil spring 31 fitted to the circular trapezoidal portion 20d and the circular trapezoidal portion 30c of the float 30. It is provided so that it can be easily lifted and moved with the fluctuation of the surface.

The compression coil spring 31 holds the float 30 in a state in which the float 30 is not buoyant by the fuel liquid while maintaining the weight and balance of the float 30, and connects the float 30 to the valve body 30a. When the float 30 receives buoyancy due to the fuel liquid, the float 30 can be easily lifted up and moved by the buoyancy when the float 30 is held away from the seat 1e. At this time, the float 30 is configured to press the valve body 30a of the float 30 against the valve seat 1e against the buoyancy.

The connector A having the above-described configuration is configured such that the float 30 is housed in the cylindrical portion 13 and the compression coil spring 31 is interposed between the float 30 and the cylindrical portion 13. 13, the lid 20 is attached to the lower opening of the fuel tank B. In the illustrated example, the side of the cylindrical portion 13 is separated from the opening Bh of the annular projecting opening Ba provided on the upper side of the fuel tank B. The sealing material 50 inserted into the fuel tank B and interposed between the annular protruding opening Ba and the opening edge Bb is fixed by the annular pressing surface 2a of the flange 2 to the annular protruding opening Ba. The flange 2 is pressed against the sealing material 50 so as to be pressed against the opening edge Bb ′ of the above, and the tip of the annular protrusion 3 is welded to the tank surface Bc of the fuel tank B. , The fuel tank B.

The flange 2 of the connector A and the opening edge B of the annular projecting opening Ba of the fuel tank B
b is pressed between the opening edge Bb and the flange portion 2, and the sealing material 50 is interposed between the flange portion 2 and the opening edge Bb 'of the annular projecting opening Ba. Any material that can effectively seal the gap may be used as the sealing material, or may be any type of sealing material, for example, a material having good gas barrier properties such as fluororubber. It is configured as a gutter-shaped annular sealing member 51 having a fitting groove 51c on the lower surface side, and this annular sealing member 51 is formed as an opening edge Bb in the annular projecting opening Ba.
In order to form a seal between the flange 2 and the opening edge Bb ′. The sealing material 51
Does not constitute this as an annular body, but prepares it as an elongate one, and attaches it to the annular projecting opening Ba.
Along the opening edge Bb of the
And the opening edge Bb 'may be sealed.

The sealing material 51 of the illustrated example has a configuration in which a protruding ridge 51d protrudes in the longitudinal direction substantially at the center of the fitting groove 51c provided in the length direction on the lower surface side. The groove 51c is provided with a protruding convex 51f protruding toward the mutually facing groove wall surfaces of the mating groove 51c.
The opening end side of 1c is a groove opening 51e of a widening, and the upper surface of the sealing material 51 is provided with two grooves 51a in the longitudinal direction thereof. Between the two sides and the concave groove 51a.
b, and is used by being attached to the opening edge Bb of the annular projecting opening Ba.

The annular projecting opening Ba is formed so as to receive the sealing material 51, typically the opening edge Bb of the annular projecting opening Ba, into the fitting groove 51c of the sealing material 51. The protruding protrusion 51f is attached to the opening edge Bb of the connector A in close contact therewith, and the flange portion 2 of the connector A welded to the fuel tank B is provided.
Is pressed against the opening edge Bb ′ of the annular projecting opening Ba by the annular pressing surface 2a to press the protruding protrusion 51d against the surface of the opening edge Bb ′, and to press each of the protruding protrusions 51b. It is provided so as to press against the annular pressing surface 2 a of the flange 2.

The connector A provided in the fuel tank B is provided with the connector A with respect to the fuel tank B by the opening edge B of the annular projecting opening Ba.
Since the annular protrusion 3 is welded to the fuel tank B in a state where the sealing material 51 is interposed between the connector A and the fuel tank B, the connector A can be easily and reliably mounted on the fuel tank B. are doing.

The mounting of the connector A to the fuel tank B depends on the opening edge Bb ′ of the annular projecting opening Ba and the annular pressing surface 2 a of the flange 2.
Since the sealing member 51 is pressed in between, the leakage of gas and the like from between the opening edge Bb ′ of the annular projecting opening Ba and the flange 2 is reliably prevented. It has the features made in the state.

The mounting of the connector A to the fuel tank B depends on the annular pressing surface 2 a of the flange 2 formed by the flange 12 of the gas barrier body 10. Since the sealing material 51 is pressed against the end Bb ′, the connector A
It has the feature that leakage of gas and the like from the tank is effectively reduced.

When the connector A is mounted on the fuel tank B, an opening edge Bb ′ of the annular projecting opening Ba of the fuel tank B is covered by the sealing material 51. The laminated end face of the fuel tank constituent material exposed on the protruding end face of the opening Ba is effectively sealed by the seal material 51.

The pipe A is connected to the connector A provided in the fuel tank B as described above. In the illustrated example, the tubular portion 1 of the connector A to which the tube C is connected is connected to the tubular portion 1 so that the connected tube C can be easily and reliably maintained in the connected state. A conical guide portion with a taper on the outer peripheral surface of the horizontal tubular portion 1c at
A projection having a stepped surface 1d provided so as to be orthogonal to the cylinder axis of the horizontal tubular portion 1c from the top end of the tapered conical guide portion is provided. It is configured by the unit 40.

In the fuel tank connector A according to this embodiment, the annular projecting portion 3 is provided integrally with the flange portion 2. For example, the annular projecting portion 3 formed separately from the flange-shaped portion 2 is prepared and configured as a cylindrical body having an inner flange, and the annular projecting portion 3 configured and prepared as this cylindrical body is In such a manner that the inner flange is brought into contact with the upper surface side of the flange-shaped portion 2, the sealing member 51 is pressed by the flange-shaped portion 2 against an opening edge Bb ′ of the annular projecting opening Ba. The annular protrusion 3 formed as the cylindrical body may be welded to the tank surface Bc of the fuel tank B.

(2) Fuel Tank Connector A According to Second Embodiment Next, a fuel tank connector A according to a second embodiment shown in FIGS. 7 to 9 will be specifically described. The connector A according to the illustrated example is configured as a means for connecting various pipes C to a fuel tank B, and particularly includes a typical fuel cut-off valve 4 and a fuel tank B.
Is shown as a connector A provided on the upper side.

The fuel tank connector A according to the second embodiment is provided in an annular protruding opening Ba of a fuel tank B provided so as to protrude outward, and is provided with the fuel tank B and the fuel tank B. A connector A for connecting a pipe C connected to a fuel tank B in communication with the pipe C.
Has a tubular portion 1 and a flange portion 2 provided on the outer peripheral side of the tubular portion 1, and an annular projecting portion of the annular projecting opening Ba is provided on a peripheral side portion of the flange portion 2. An annular protrusion 3 is provided so as to protrude along Ba ′, and a seal material 50 provided between the flange portion 2 and an opening edge Bb of the annular protrusion opening Ba is formed by the annular protrusion. The one-side engaging portion 3a provided in the annular projecting portion 3 is brought into contact with the annular projecting portion Ba 'of the annular projecting opening Ba so that the flange portion 2 presses the opening edge Bb' of the opening Ba. The connector A is mounted on the fuel tank B by being hooked to the other engaging portion Be provided.
Can be easily and reliably provided in a sealed state.

The connector A according to the illustrated example has a configuration in which the annular projecting portion 3 is provided along the annular projecting portion Ba 'of the annular projecting opening Ba in the fuel tank B. The one-side engaging portion 3a provided in the annular projecting portion 3 is connected to the other engaging portion Be provided in the annular projecting opening Ba of the fuel tank B by opening the flange-shaped portion 2 and the annular projecting opening Ba. The sealing member 50 provided between the fuel tank B and the edge portion Bb is latched so that the sealing member 50 is pressed against the opening edge Bb ′ of the annular projecting opening Ba by the flange portion 2. The configuration other than that provided for the fuel tank connector A according to the first embodiment is the same or substantially the same as the configuration of the fuel tank connector A according to the first embodiment. Same as connector A Used to. Therefore, the first
The same or substantially the same components as those of the fuel tank connector A according to the embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The fuel tank connector A according to the illustrated example
Is the tip 1 of the flange 12 in the gas barrier body 10.
In order to cover the distal end surface of the fuel tank B, the distal end of the covering portion 40a of the outer shell body portion 40 is shortly oriented downward along the annular projecting portion Ba 'of the annular projecting opening Ba of the fuel tank B. An annular projecting portion 40b projecting in a cylindrical shape is provided. The annular projecting portion 40b constitutes the annular projecting portion 3 of the connector A, and two of the annular projecting portions 3 are provided upward from the lower edge of the annular projecting portion 3. An elastic engaging piece 3a 'is formed between the slits 3b and 3b, and the elastic engaging piece 3a'
The configuration is provided with a hooking projection 3a ″ protruding toward the a ′ side.

A plurality of the elastic engaging pieces 3a 'are provided at predetermined intervals in the circumferential direction of the annular projecting portion 3, and the elastic projecting portions 3a' are provided between the elastic engaging pieces 3a '. 3 has a stepped orbital recess 3h on the inner side surface at the lower end surface thereof, and an annular projection Ba 'of the annular projection opening Ba.
And an annular convex portion Be 'as a hooking portion Be is accommodated therein. Also, this elastic hooking piece 3a '
The engagement protrusion 3a ″ provided on the front surface of the annular protrusion 3B extends from the distal end side of the annular protrusion 3 toward the flange portion 2 side.
As a configuration having an inclined surface 3c that gradually protrudes toward the a side and an engaging groove 3d ′ configured to include an engaging surface 3d that falls from the top end of the inclined surface 3c in a direction perpendicular to the direction in which the annular projecting portion 3 projects. is there.

The annular projecting portion B of the annular projecting opening Ba is hooked on the engaging portion 3a of the connector A.
a 'is provided on the annular projection Ba'.
Is formed as an annular convex portion Be 'provided so as to go around the peripheral surface of the inclined surface Bf. The inclined surface Bf gradually projects outward from the upper side downward, and the annular projecting portion is formed from the top end of the inclined surface Bf. And an engaging surface Bg provided so as to be continuous at right angles to the Ba 'surface, and between the opening edge Bb of the annular projecting opening Ba and the flange portion 2 of the connector A. The provided sealing material 50 is pressed against the opening edge Bb 'of the annular projecting opening Ba by the flange 2 so as to be engaged with the engaging portion 3a of the annular projecting portion 3 of the connector A. There is a configuration.

The annular projecting opening B in the fuel tank B provided with the connector A according to the illustrated example is provided.
a is provided on the upper side of the fuel tank B, and the annular protrusion 3 of the connector A is assembled in a fitted state, and an annular protrusion suitable for engaging the engaging protrusion 3a ″ in the annular protrusion 3 is provided. A slightly longer annular protrusion Ba 'which is formed in a tubular shape so that Be' can be provided.
It is comprised as what provided with.

When the connector A according to the illustrated example is provided for the fuel tank B, the fuel tank B
The sealing material 50 to be attached to the end surface of the opening edge Bb ′ of the annular projecting opening Ba is prepared as a ring-shaped sealing material 53 made of a material having a good gas barrier property such as fluorine rubber. The surface of the sealing member 53 is formed by the surface of the opening edge Bb ′ and the annular pressing surface 2 of the flange portion 2.
It is configured such that it can be provided in close contact with the surface of the flange-shaped portion 12 of the gas barrier body portion 10 constituting a. In addition, this sealing material 53 is prepared as a long sealing material,
Each surface of this long sealing material is connected to the opening edge Bb ′.
And the surface of the flange portion 12 of the gas barrier body portion 10 constituting the annular pressing surface 2a of the flange portion 2 may be provided in an annular manner.

In the fuel tank B provided with the connector A according to the illustrated example, a hook Be that is hooked to the hook 3a of the connector A can be provided in the annular projecting opening Ba of the fuel tank B. Any configuration may be used as long as it has a configuration, and it may be configured by any material. For example, similarly to the fuel tank B provided with the connector A for the fuel tank according to the first embodiment, the fuel tank B provided with the connector A is hardly permeated by the gas barrier layer, that is, the vaporized gas from the fuel. The fuel tank B provided with the connector A is constituted by a multi-layer synthetic resin plate having an arbitrary plurality of gas barrier layers, and a hole is formed in the plate. By the processing, the fuel tank B may be provided with an annular projecting opening Ba that forms the opening Bh.

The fuel tank connector A having the above-described configuration is similar to the fuel tank connector A according to the first embodiment, in that the opening edge Bb of the annular projecting opening Ba and the flange-shaped Between the part 2 and the sealing material 53
The connector A is engaged with the annular projecting portion 3 of the connector A such that the sealing material 53 is pressed against the opening edge Bb ′ of the annular projecting opening Ba by the flange 2. 3a is a hooking portion B of the annular projecting opening Ba.
e so that the fuel tank B can be easily and reliably mounted on the fuel tank B.
The pipe C can be connected to the connector A provided in the above.

The connector A is provided on the fuel tank B by the opening edge Bb ′ of the annular projecting opening Ba and the annular pressing surface 2 a of the flange 2.
Since the sealing member 53 is pressed in between, the leakage of gas and the like from between the opening edge Bb ′ of the annular projecting opening Ba and the flange 2 is reliably prevented. .

Further, the connector A is provided to the fuel tank B by adjusting the opening edge of the annular projecting opening Ba by the annular pressing surface 2a of the flange 2 formed by the flange 12 of the gas barrier body 10. Since this is the pressing of the sealing material 53 against the end Bb ′, the connector A
Leakage of gas and the like is effectively reduced.

When the connector A is mounted on the fuel tank B, an opening edge Bb ′ of the annular projecting opening Ba of the fuel tank B is covered with the sealing material 53. The laminated end surface of the fuel tank constituent material exposed on the protruding end surface of the portion Ba is effectively sealed by the seal material 53.

In the fuel tank connector A according to this embodiment, the annular projecting portion 3 is provided integrally with the flange portion 2. As the annular projecting portion 3 formed separately from the flange-shaped portion 2, for example, a cylindrical body provided with an inner flange and having a one-side engaging portion on the inner peripheral side is prepared and prepared as this cylindrical body. The annular protruding portion 3 makes the inner flange of the cylindrical body contact the upper surface side of the flange portion 2, and the flange portion 2 allows the sealing material 53 to be formed.
The annular projecting portion 3 configured as the cylindrical body is pressed against the opening edge Bb ′ of the annular projecting opening Ba.
The engaging portion provided on the annular projecting opening Ba may be engaged with the other engaging portion provided on the annular projecting opening Ba.

(3) Connector A for Fuel Tank According to Third Embodiment Next, a connector A for a fuel tank according to the third embodiment shown in FIGS. 10 and 11 will be specifically described. The connector A according to the illustrated example is configured as means for connecting various pipes C to the fuel tank B.
It is shown as a connector A provided on the upper side of the fuel tank B with a typical fuel cut-off valve 4.

The fuel tank connector A according to the third embodiment is provided in an annular protruding opening Ba of a fuel tank B provided so as to protrude outward, and is provided with the fuel tank B and the fuel tank B. A connector A for connecting a pipe C connected to a fuel tank B in communication with the pipe C.
Has a tubular portion 1 and a flange portion 2 provided on the outer peripheral side of the tubular portion 1, and an annular projecting portion of the annular projecting opening Ba is provided on a peripheral side portion of the flange portion 2. An annular protrusion 3 is provided so as to protrude along Ba ′, and a seal material 50 provided between the flange portion 2 and an opening edge Bb of the annular protrusion opening Ba is formed by the annular protrusion. A screw portion 3 provided on the annular projecting portion 3 so that the flange portion 2 presses the opening edge Bb ′ of the opening Ba.
e is screwed to a screw portion Bd provided in an annular projecting portion Ba ′ of the annular projecting opening Ba, and is provided in the fuel tank B. With this connector A, the fuel tank B Thus, various pipes C can be easily and securely provided in a sealed state.

The connector A according to the illustrated example has an annular projecting portion 3 which is provided on the peripheral side of the flange 2 along the annular projecting portion Ba 'of the annular projecting opening Ba. The annular projecting portion 3 is formed as an annular projecting portion 3 ′ constituted by a cylindrical body 3 f having an inner flange portion 3 g, and the inner flange portion 3 g is provided on the upper surface of the flange portion 2. The flange-shaped portion 2 is housed in the annular projected portion 3 ′ so as to contact the lower surface of the annular projected portion 3 ′, and is provided between the flange-shaped portion 2 and the opening edge Bb of the annular projected opening Ba. The threaded portion 3e provided on the annular projecting portion 3 'is pressed so that the sealing material 50 to be pressed against the opening edge Bb' of the annular projecting opening Ba by the flange portion 2. It is screwed into a screw portion Bd provided in the annular projecting opening Ba, and A configuration other than the configuration in which the connector A is provided in the fuel tank B is the same or substantially the same as the configuration of the fuel tank connector A according to each of the above-described embodiments. It is used in the same manner as the fuel tank connector A. Therefore,
The same or substantially the same components as those of the connector A for a fuel tank according to each of the above embodiments are denoted by the same reference numerals, and description thereof will be omitted.

The fuel tank connector A according to the illustrated example
The connector A is screwed into the annular projecting opening Ba of the fuel tank B with the annular projecting portion 3 ′ on the peripheral side of the flange portion 2. There is a configuration to be provided.

The flange 2 forming the connector A is
In the illustrated example, the outer shell 40 constituting the connector A is provided with a flange-like portion 12 in the gas barrier body 10. And a covering portion 40a for covering a surface portion extending from the upper surface side to the opening end of the tubular portion 11, and a tubular portion 40c further protruding forward from the opening end, the flange portion 12 The tubular portion 11 and the covering portion 40a and the tubular portion 40c constitute the tubular portion 1 and the flange portion 2 of the connector A, and constitute the upper surface of the flange portion 2. The inner flange 3g of the annular protruding portion 3 'is accommodated in an annular concave step 40d formed on the peripheral side of the covering portion 40a.

The annular protrusion 3 ′ provided on the flange 2 has a cylindrical body 3 f fitted so as to be tightly fitted on the flange 2, and the annular recess 3 ′ of the flange 2. Step 4
0d, an inner flange 3g provided inward from an opening edge of one end of the cylindrical body 3f, and a screw part 3e provided on an inner peripheral surface of the cylindrical body 3f. The portion 3e is configured as a female screw portion 3e 'provided on the cylindrical body 3f from the cylinder end side opposite to the side provided with the inner flange portion 3g.

The screw portion Bd of the annular projecting portion Ba 'of the annular projecting opening Ba is screwed to the female screw portion 3e' of the annular projecting portion 3 of the connector A. The sealing member 50 provided between the opening edge Bb of the annular projecting opening Ba and the flange portion 2 of the connector A is formed as a male screw portion Bd ′ provided on the outer peripheral surface portion. The female screw portion 3e 'of the annular protrusion 3' of the connector A can be screwed into the opening edge Bb 'of the protrusion opening Ba so as to be pressed by the flange portion 2.

The annular projecting opening Ba of the fuel tank B provided with the connector A according to the illustrated example is provided on the upper side of the fuel tank B, and the annular projecting portion 3 'of the connector A is screwed. In order to be able to provide a male screw portion Bd suitable for the present invention, it is configured as having a slightly longer annular projecting portion Ba 'formed in a cylindrical shape.

In addition, when the connector A according to the illustrated example is mounted on the fuel tank B, the fuel tank B
The sealing member 50 attached to the end face of the opening edge Bb ′ of the annular projecting opening Ba and the inner side face of the opening Bh is formed into an L-shaped cross section made of a material having good gas barrier properties such as fluoro rubber. Prepared as an annular sealing material 52 to be formed, and the cylindrical portion 52b of the annular sealing material 52 is fitted so as to be in close contact with the inner wall surface of the opening Bh of the annular projecting opening Ba. The surface of the annular plate-shaped portion 52a, which is provided so as to protrude outward from the upper end, is fixed to the opening edge B.
It is configured so that it can be provided in close contact with the surface of b ′ and the surface of the flange portion 12 of the gas barrier body 10 constituting the annular pressing surface 2a of the flange portion 2. In addition, the sealing material 52 is prepared as a long sealing material having an L-shaped cross section, and the vertical plate-like portion of the sealing material is so formed as to be in contact with the inner surface of the annular projecting portion Ba ′. The protruding opening Ba is provided so as to form an annular shape, and the plate-like portion on the upper side thereof is provided with the surface of the opening edge Bb ′ and the flange of the gas barrier body 10 constituting the annular pressing surface 2 a of the flange 2. It may be configured to be provided so as to be in close contact with the surface of the shape portion 12.

In the fuel tank B provided with the connector A according to the illustrated example, a screw portion Bd into which the annular projecting portion 3 of the connector A is screwed is provided in the annular projecting opening Ba of the fuel tank B. Any configuration may be used as long as it has a configuration to be obtained, and any material may be used. For example, similarly to the fuel tank B provided with the connector A for a fuel tank according to each of the above-described embodiments, the fuel tank B provided with the connector A is provided with a gas barrier layer, that is, a layer through which evaporative gas from the fuel hardly permeates. Is configured as having
The fuel tank B provided with the connector A is made of a multi-layer synthetic resin plate having an arbitrary plurality of gas barrier layers, and the fuel tank B is formed by drilling and threading the plate. May be configured to include an annular protruding opening Ba that forms the opening Bh.

The fuel tank connector A having such a configuration is the same as the fuel tank connector A according to each of the above embodiments.
In the same manner as in the above, a sealing material 52 is interposed between the opening edge Bb of the annular projecting opening Ba and the flange portion 2, and the interposed sealing material 52 is attached to the annular projecting opening Ba. Ba
The female screw 3e 'of the annular protruding portion 3' of the connector A is screwed to the male screw portion Bd 'of the annular protruding opening Ba so as to be pressed against the opening edge Bb' of the connector A. In this way, the fuel tank B can be easily and reliably provided. The connector A provided in the fuel tank B can be connected to the pipe C as appropriate.

Further, the connector A is provided to the fuel tank B because the opening edge Bb 'of the annular projecting opening Ba and the annular pressing surface 2a of the flange 2 are provided.
Since the sealing member 52 is pressed in between, the leakage of gas and the like from between the opening edge Bb ′ of the annular projecting opening Ba and the flange 2 is reliably prevented. .

Further, the mounting of the connector A to the fuel tank B depends on the annular pressing surface 2 a of the flange 2 formed by the flange 12 of the gas barrier body 10. Since the sealing material 52 is pressed against the end Bb ′, the connector A
Leakage of gas and the like is effectively reduced.

When the connector A is mounted on the fuel tank B, an opening edge Bb ′ of the annular projecting opening Ba in the fuel tank B is covered with the sealing material 52. The laminated end surface of the fuel tank constituent material exposed on the protruding end surface of the portion Ba is effectively sealed by the seal material 52.

In the fuel tank connector A according to this embodiment, the annular projecting portion 3 ′ is provided separately from the flange portion 2. This annular protrusion 3 ′ may be configured to be provided integrally with the flange 2.

[0106]

According to the fuel tank connector of the present invention, the fuel tank according to the first aspect of the present invention is provided at an annular projecting opening of a fuel tank provided in an outwardly projecting state. And a pipe connecting the pipe connected to the fuel tank in a communication state, wherein the connector is
An annular protrusion having a cylindrical portion and a flange portion provided on the outer peripheral side of the cylindrical portion, and being provided on the peripheral side portion of the flange portion so as to protrude toward the tank surface of the fuel tank; A sealing material provided between the flange-shaped portion and the opening edge of the annular projecting opening is pressed against the opening edge of the annular projecting opening by the flange-shaped portion. Wherein the annular projecting portion is welded to the fuel tank and provided, and the invention according to claim 2 is provided in an annular projecting opening portion of the fuel tank provided in a state of projecting outward. A connector for connecting the fuel tank and a pipe connected to the fuel tank in a communication state, the connector comprising: a tubular portion; and a flange provided on an outer peripheral side of the tubular portion. And a flange on the peripheral side of the flange. An annular projecting portion projecting along the annular projecting portion of the annular projecting opening, and a sealing material provided between the flange-shaped portion and an opening edge of the annular projecting opening is formed in the annular projecting portion. The one-side engaging portion provided on the annular projecting portion is brought into contact with the other engaging portion provided on the annular projecting portion of the annular projecting opening portion so as to press and contact the opening edge of the projecting opening portion with the flange portion. The fuel tank of the present invention is configured to be hung and provided in the fuel tank, and the invention according to claim 3 is provided in an annular projecting opening of the fuel tank provided so as to protrude outward. A connector for connecting a fuel tank and a pipe connected to the fuel tank in a communication state, wherein the connector has a tubular portion and a flange portion provided on an outer peripheral side of the tubular portion. Along with the peripheral portion of the flange portion An annular projecting portion projecting along the annular projecting portion of the annular projecting opening, and a sealing material provided between the flange-shaped portion and an opening edge of the annular projecting opening is formed in the annular projecting portion. So that the flange-shaped portion is pressed against the opening edge of the protruding opening,
Since the screw portion provided on the annular projecting portion is screwed to the screw portion provided on the annular projecting portion of the annular projecting opening, and is provided on the fuel tank, The connector can be easily and securely mounted on the fuel tank in a sealed state, and used for pipe connection.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a fuel tank connector according to a first exemplary embodiment together with a main part of the fuel tank in a state before the fuel tank connector is mounted on the fuel tank;

FIG. 2 is a plan view showing a state where the connector is attached to the fuel tank before the connector is mounted on the fuel tank.

FIG. 3 is a longitudinal sectional view showing a state where the connector is mounted on a fuel tank together with a main part of the fuel tank.

FIG. 4 is a bottom view of a sealing material used for mounting the connector.

FIG. 5 is a longitudinal sectional view of the same.

FIG. 6 is an enlarged sectional view of a main part of the same.

FIG. 7 is a vertical cross-sectional view showing a state where a fuel tank connector according to a second exemplary embodiment is provided on a fuel tank together with a main part of the fuel tank;

FIG. 8 is a plan view of the same.

FIG. 9 is a side view of an essential part showing the same part cut away.

FIG. 10 is a longitudinal sectional view showing a state in which a fuel tank connector according to a third exemplary embodiment is provided on a fuel tank together with a main part of the fuel tank.

FIG. 11 is a plan view of the same.

FIG. 12 is a longitudinal sectional view showing a conventional structure for attaching a vaporization valve to a fuel tank.

[Explanation of symbols]

 Reference Signs List A Connector B Fuel tank Ba Annular projecting opening Ba 'Annular projecting portion Bb Opening edge Bb' Opening edge Bd Screw portion Be Engagement portion C Tube 1 Cylindrical portion 2 Flange portion 3 Annular protrusion 4 Fuel cut-off valve 10 Gas barrier body 50 Sealing material

Claims (9)

[Claims] 1. A connector which is provided in an annular projecting opening of a fuel tank which is provided so as to protrude outward and connects the fuel tank and a pipe connected to the fuel tank in a communicating state. The connector has a tubular portion and a flange portion provided on the outer peripheral side of the tubular portion, and protrudes toward the tank surface of the fuel tank at a peripheral side portion of the flange portion. And a sealing material provided between the flange-shaped portion and the opening edge of the annular projection opening is provided at the opening edge of the annular projection opening. The fuel tank connector according to claim 1, wherein the annular protrusion is welded to the fuel tank so as to be pressed against the fuel tank. 2. A connector which is provided in an annular projecting opening of a fuel tank which is provided so as to protrude outward and connects the fuel tank and a pipe connected to the fuel tank in a communicating state. The connector has a cylindrical portion and a flange portion provided on the outer peripheral side of the cylindrical portion, and the annular projecting portion of the annular projecting opening is formed on the peripheral side of the flange portion. An annular protrusion is provided so as to protrude along the seal member, and a sealing material provided between the flange-shaped portion and an opening edge of the annular protrusion opening is provided at an opening edge of the annular protrusion opening. One engagement portion provided on the annular projecting portion is engaged with the other engaging portion provided on the annular projecting portion of the annular projecting opening portion so as to press and contact with the flange-shaped portion, so that the fuel tank is Fuel tank connector characterized by being provided Data. 3. A connector provided in an annular projecting opening of a fuel tank which is provided so as to protrude outward and connects the fuel tank and a pipe connected to the fuel tank in a communicating state. The connector has a cylindrical portion and a flange portion provided on the outer peripheral side of the cylindrical portion, and the annular projecting portion of the annular projecting opening is formed on the peripheral side of the flange portion. An annular protrusion is provided so as to protrude along the seal member, and a sealing material provided between the flange-shaped portion and an opening edge of the annular protrusion opening is provided at an opening edge of the annular protrusion opening. A screw portion provided on the annular protrusion is screwed to a screw portion provided on the annular protrusion of the annular protrusion opening so as to be pressed against the flange-like portion to be provided on the fuel tank. A connector for a fuel tank, comprising: 4. The connector according to claim 1, wherein the connector includes a gas barrier body made of a synthetic resin having a gas barrier property and a cylindrical portion and a flange provided on an outer peripheral side of the cylindrical portion. 4. The fuel tank connector according to claim 1, wherein the flange is formed in such a manner that the sealing material is pressed against the edge of the opening. 5. 5. The fuel tank connector according to claim 4, wherein the gas barrier body is made of polyacetal. 6. The fuel tank connector according to claim 1, wherein at least the annular projecting portion of the connector is made of a synthetic resin weldable to the fuel tank. 7. The fuel according to claim 1, wherein the connector is a connector for connecting a fuel supply pipe. Connector for tank. 8. The fuel tank according to claim 1, wherein the connector is a connector for connecting a ventilation pipe. Connector. 9. The connector according to claim 1, wherein the connector comprises a fuel cut-off valve. Fuel tank connector.