KR101737624B1 - Filler neck assembly and method for manufacturing thereof - Google Patents

Abstract

The present invention provides a filler neck assembly capable of minimizing gas leakage to the outside and a method of manufacturing the filler neck assembly. The filler neck assembly includes a filler neck assembly connected to an external fuel nozzle to guide fuel supply from the fuel nozzle to a fuel tank A nozzle support region integrally coupled to the nozzle support region and interconnecting the nozzle support region and the fuel tank; and a nozzle support region coupled to the cap holder to support the nozzle, And a filler pipe having a pipe region.

Description

[0001] FILLER NECK ASSEMBLY AND METHOD FOR MANUFACTURING THEREOF [0002]

The present invention relates to a filler neck assembly and a manufacturing method thereof, and more particularly, to a filler neck assembly for guiding fuel introduced from a fuel injection nozzle to a fuel tank and a method of manufacturing the filler neck assembly.

Generally, automobiles can obtain power that can be driven by various fuels such as gasoline, diesel, LPG (Liquefied Petroleum Gas), LNG (Liquefied Natural Gas) and CNG (Compressed Natural Gas). The various fuels of these vehicles are transferred to the fuel tank of the vehicle through a fuel filler tube called a filler neck and stored inside the fuel tank.

7, the conventional filler neck assembly 10 may be configured such that the cap holder 11, the filler tube 13, and the filler pipe 15 are interconnected. The filter tube 13 forms a region between the cap holder 11 and the filler pipe 15 and the cap holder 11 and the filler pipe 15 between the cap holder 11 and the filler pipe 15. [ Both ends of which are connected to the fuel injection nozzle 15 so that fuel from the fuel injection nozzle is supplied to the fuel tank through the filler pipe 15. The filler tube 13 is formed with a flange 17 for supporting the filler neck assembly 10 to the vehicle body.

However, in the prior art, the filter tube 13 and the filler pipe 15 are separately provided and interconnected. Accordingly, there is a demand for a filler neck that can meet the regulation of the enhanced hydrocarbon gas emission that is recently emerging because leakage of hydrocarbon gas may occur at the connection site between the filter tube 13 and the filler pipe 15. [

In addition, in the prior art, the flange 17 supporting the body of the filler neck assembly 10 is provided integrally with the filler tube 13. Accordingly, when an accident such as a vehicle collision occurs, an external impact is applied to the filler tube 13 through the flange 17, which may cause fire due to fuel leakage.

Korean Patent Registration No. 10-0936984 (filler neck for fuel injection device of vehicle. 2010.01.07.)

An object of the present invention is to provide a filler neck assembly and a method of manufacturing the same that can minimize gas leakage to the outside.

Another object of the present invention is to provide a filler neck assembly capable of preventing an impact applied to a fuel supply unit in the event of an accident such as a vehicle collision and a method of manufacturing the same.

A filler neck assembly according to the present invention is connected to an external oiling nozzle and guides fuel supply from the oiling nozzle to a fuel tank. The filler neck assembly includes a cap holder into which the oiling nozzle is inserted, A filler pipe having a nozzle support region for supporting the injection nozzle and a pipe region extending integrally from the nozzle support region and interconnecting the nozzle support region and the fuel tank so that the filler pipe is isolated through the vehicle body And an air drain part integrally provided with a flange for supporting the filler pipe to the vehicle body and forming a path through which air from the outside is supplied into the vehicle body, An upper case which is in close contact with an outer wall of the pipe, Wherein the flange includes a first flange connecting the upper case and the filler housing of the vehicle body, a first flange integrally or closely attached to the first flange and connecting the lower case to the filler housing, And a flange cover disposed at a front end of the first and second flanges and adapted to engage the first and second flanges and separate from the filler pipe.

Wherein the upper case includes an air drain port extending through the first flange and extending into the filler housing and forming a path through which the air in the filler housing flows into the air drain part and air flowing into the air drain part And an air discharging unit for supplying air to the air vent pipe connected to the air filter of the vehicle body.

The upper case is provided with a plurality of frames protruding from the inner case wall of the upper case between the air drain port and the air discharging unit and includes a filter for filtering moisture and foreign matter of air supplied to the air discharging unit, And a water treatment hole forming a path through which the moisture and foreign matter are discharged to the outside of the upper case.

The material of the air-drain portion may be provided to include at least one of steel, stainless steel, and plastic.

The material of the cap holder may be at least one of stainless steel and plastic, and the filler pipe may be made of stainless steel or plastic, and may be interconnected by any one of heat sealing, rotary sealing, and assembly.

The plastic may be provided to include at least one of HDPE multi-material, nylon, and nano material.

The method of manufacturing a filler neck assembly according to the present invention is a method of manufacturing a filler neck assembly that is connected to an external fuel nozzle to guide fuel supply from the fuel nozzle to a fuel tank, A filler pipe, and an air drain, wherein a nozzle support region for supporting the injection nozzle, and a pipe region interconnecting the nozzle support region and the fuel tank are integrally formed to form the filler pipe, A coupling step of coupling the nozzle support region of the filler pipe and at least one of the cap holder to at least one of the heat welding, the rotary fusion welding, and the assembly; and a step of supporting the filler pipe to the vehicle body such that the filler pipe is isolated through the vehicle body A flange, and an air dew that forms a path through which air from the outside is supplied into the vehicle body And the step of manufacturing the air-drain part includes the steps of: forming an upper portion of the upper portion of the filler pipe, which is in close contact with the outer wall of the filler pipe, A lower case closely attached to the outer wall of the filler pipe so as to correspond to the upper case, and a lower case closely attached to the first flange, Wherein the step of supporting the flange is carried out by a flange cover which is disposed at the front end of the first and second flanges and separated from the filler pipe, 2 flanges are combined.

In the filler pipe manufacturing step, the filler pipe may be formed by blow molding.

The filler neck assembly and the method of manufacturing the same according to the present invention have the effect of minimizing gas leakage in the fuel supply part and satisfying the reinforced carbon dioxide emission regulation condition that is emerging in recent years.

In addition, the filler neck assembly and the method of manufacturing the same according to the present invention minimize the impact applied to the fuel supply unit in the event of an accident, thereby preventing the occurrence of secondary lands such as a fire due to fuel leakage.

The technical effects of the present invention are not limited to the effects mentioned above, and other technical effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a perspective view showing a pillar neck assembly according to the present embodiment,
FIG. 2 is a side view showing the coupling of the filler neck assembly and the filler housing according to the present embodiment,
3 is a perspective view showing a front end of the pillar neck assembly according to the present embodiment,
4 is an exploded perspective view showing a front end of the pillar neck assembly according to the present embodiment,
5 is a cross-sectional perspective view cut along the line I-I 'shown in FIG. 3,
6 is a flowchart showing a manufacturing method of the pillar neck assembly according to the present embodiment,
7 is a perspective view of a conventional filler neck assembly.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it should be understood that the present invention is not limited to the disclosed embodiments, but may be implemented in various forms, and the present embodiments are not intended to be exhaustive or to limit the scope of the invention to those skilled in the art. It is provided to let you know completely. The shape and the like of the elements in the drawings may be exaggerated for clarity, and the same reference numerals denote the same elements in the drawings.

1 is a perspective view showing a pillar neck assembly according to the present embodiment.

1, the filler neck assembly 100 according to the present embodiment includes a fuel supply unit 300 in which a fuel injection nozzle (not shown) is inserted and which transfers fuel from a fuel injection nozzle to a fuel tank, And an air supply unit 500 connected to one side of the front end of the supply unit 300 and connected to an air filter.

Here, the fuel supply unit 300 may include a cap holder 310 and a filler pipe 330.

First, the cap holder 310 forms an insertion path of the fuel injection nozzle. The cap holder 310 is formed with an insertion hole 311 through which a fuel injection nozzle is inserted. The cap holder 310 may be made of stainless steel or plastic.

And the filler pipe 330 is connected to the cap holder 310 so that the fuel from the fuel injection nozzle is guided to the fuel tank. At this time, the cap holder 310 and the filler pipe 330 may be connected to each other by thermal or rotary fusion or assembly such as a welding process, and the material of the filler pipe 330 may be any one of stainless steel, have. Here, the plastic may be provided to include at least one of HDPE multi-material, nylon, and nano material, but the material of the filler pipe 330 is not limited.

On the other hand, the air supply part 500 may include an air drain part 510 and an air vent pipe 530.

First, the air drain part 510 is provided at a front end of the adjacent filler pipe 330 of the cap holder 310, thereby forming a path through which fresh air outside the vehicle flows into the interior of the vehicle. The air drain part 510 may be integrally provided with a flange 550 for supporting the filler neck assembly 100 to the vehicle body. The material of the air drain part 510 and the flange 550 may be steel, And may be made of plastic. When the air drain part 510 and the flange 550 are formed of stainless steel, the flange 550 can more firmly support the filler neck assembly 100 than the vehicle body, and the air drain part 510 and the flange 550 Is provided with plastic, there is an advantage that the filler neck assembly 100 itself can be made lighter.

The air vent pipe 530 interconnects the air drain portion 510 and the air filter. Here, the filler pipe 330 and the air-drain portion 510 will be described in detail.

FIG. 2 is a side view showing a coupling between the pillar neck assembly and the pillar housing according to the present embodiment, and FIG. 3 is a perspective view showing a front end of the pillar neck assembly according to the present embodiment. 4 is an exploded perspective view showing the front end of the pillar neck assembly according to the present embodiment, and FIG. 5 is a sectional perspective view cut along the line I-I 'shown in FIG.

2 to 5, the filler pipe 330 according to the present embodiment may include a nozzle support region 331 and a pipe region 333.

A fuel injection nozzle inserted into the filler pipe 330 through the cap holder 310 is supported in the nozzle support region 331 and the pipe region 333 is supported by the fuel injection nozzle 331 supported by the nozzle support region 331, Thereby forming a path through which the fuel from the fuel tank is transported to the fuel tank. The inner diameter of the nozzle support region 331 of the filler pipe 330 may be greater than the inner diameter of the pipe region 333 of the filler pipe 330. The filler pipe 330 may be formed by blow molding So that the nozzle support region 331 and the pipe region 333 can be formed in the single filler pipe 330.

The filler pipe 330 according to the present embodiment includes a nozzle support region 331 and a nozzle support region 332. The filler pipe 330 has a nozzle support region 331, And the pipe region 333 are formed inside the single filler pipe 330, there is an advantage that the problem of leakage of the hydrocarbon gas can be solved.

Meanwhile, the inner tube 350 may be disposed inside the filler pipe 330.

The inner tube 350 may be disposed in the nozzle support area 331 and may include a flap valve not shown. The flap valve may be pivotally coupled to the inner tube 350. Here, the flap valve can open / close the inside of the inner tube 350 to prevent fuel injection during fuel injection and prevent excessive backflow of fuel during or after fuel injection. However, the application of the flap valve is not limited. At this time, the filler pipe 330 can receive the inner tube 350 and extend relatively longer than the lower end of the inner tube 350 to be connected to the fuel tank.

The air drain part 510 is integrally provided with a flange 550 that supports the filler pipe 330 to the vehicle body so that the filler pipe 330 is isolated through the vehicle body. Thereby forming a supply path. The air drain part 510 surrounds the filler pipe 330 on the outside of the front end of the filler pipe 330 and forms an external air inflow / outflow path to the inside of the filler housing 30 in contact with fresh outside air.

The air drain part 510 includes an upper case 511 which is in close contact with the outer wall of the filler pipe 330 at the upper side of the nozzle support area 331 and a lower case 511 which is in close contact with the outer wall of the filler pipe 330 at the lower side of the nozzle support area 331. [ (513). Here, the upper case 511 and the lower case 513 may be connected by various fastening methods such as a combination of lock protrusions and lock grooves, fusion, and the like. However, it is preferable that the filler pipe 330 is firmly supported on the vehicle body and is connected by bolting so as to prevent the flow of the filler pipe 330.

The upper case 511 may include an air drain port 511a, an upper flange 551, a filter 511c, an upper water treatment hole 511e, and an air discharge unit 511g.

The air drain port 511a is provided at the front end of the upper case 511. The air drain port 511a is provided to extend into the filler housing 30 when the filler neck assembly 100 is connected to the vehicle body. The air drain port 511a allows external air from the inside of the pillar housing 30 to be provided to the air supply path formed in the air drain part 510 so that fresh outside air is supplied to the air vent pipe 530 .

And the upper flange 551 extends in the outer direction of the upper case 511. [ The upper flange 551 is coupled to the filler housing 30 together with the lower flange 553 to be described later so that the filler neck assembly 100 is supported by the filler housing 30. [

Since the upper flange 551 and the lower flange 553 are not provided in the fuel supply part but are provided in the air drain part 510 different from the prior art, when an accident such as a vehicle collision occurs, Can be minimized. In addition, the upper flange 551 and the lower flange 553 are separated from each other with the occurrence of a crack in the event of an accident, and the external impact can be minimized to the fuel supply unit 300.

The filter 511c is provided inside the upper case 511 to prevent moisture and foreign substances and the like present in the external air provided from the air drain port 511a from being supplied to the air vent pipe 530. [ This filter 511c is provided inside the upper case adjacent to the air-drain port 511a. Here, the filter 511c may be provided as a plurality of frames protruding from the inner wall of the upper case 511 toward the filler pipe 330, but the shape of the filter 511c is not limited.

The upper water treatment hole 511e is formed at the lower end of the air discharge portion 511g at the rear end of the upper case 511. [ The upper water treatment hole 511e may form a path for discharging moisture and foreign matter filtered by the filter 511c to the outside of the upper case 511 to minimize the water remaining ratio inside the upper case 511. [

The air discharge portion 511g extends from the rear end of the upper case 511. [ The air discharge unit 511g may communicate the inside of the upper case 511 with the air vent pipe 530 to allow the outside air filtered by moisture and foreign matter to be supplied to the air filter inside the upper case 511.

Meanwhile, the lower case 513 may include a lower flange 553 and a lower water treatment hole 513a.

First, the lower flange 553 extends outwardly of the lower case 513 so as to correspond to the upper flange 551. The lower flange 553 may be integrally formed with the upper flange 551 or may be coupled to the filler housing 30 together with the upper flange 551 to allow the filler neck assembly 100 to be supported by the filler housing 30. Here, the flange 550 may be connected to the filler housing 30 by a nut insert injection or assembly method, but the connection method of the flange 550 and the filler housing 30 is not limited.

Further, the upper flange 551 and the lower flange 553 can be brought into close contact with each other by the flange cover 555. [ The flange cover 555 reinforces the engagement of the upper flange 551 and the lower flange 553 at the front end of the upper flange 551 and the lower flange 553. Here, the flange cover 555 includes a plurality of fins 555a, and a plurality of fins 555a are inserted into the upper flange 551 and the lower flange 553, so that the upper flange 551 and the lower flange 553 ) Can be reinforced.

The lower handling hole 513a is formed at the rear end of the lower case 513. The lower water treatment hole 513a may form a path for discharging moisture and foreign matter that may be present inside the lower case 513 to the outside of the lower case 513 according to the external air introduced through the air drain port 511a .

Hereinafter, a method for manufacturing the pillar neck assembly according to the present embodiment will be described in detail with reference to the accompanying drawings. Hereinafter, the manufacturing method of the filler neck assembly will be described in order, but the present invention is not limited to the following description.

6 is a flowchart showing a manufacturing method of the pillar neck assembly according to the present embodiment.

6, the method of manufacturing the filler neck assembly according to the present embodiment includes a cap holder manufacturing step (S100), a filler pipe manufacturing step (S200), a fuel supply unit combining step (S300), an air drain manufacturing step S400, an air supply coupling step S500, and a car support step S600.

The cap holder manufacturing step (S100) forms the cap holder (310). Here, the material of the cap holder 310 may be stainless steel or plastic.

The filler pipe manufacturing step S200 includes a nozzle support region 331 in which the fuel injection nozzle can be supported and a pipe region 333 extending from the nozzle support region 331 and forming a fuel feed path to the fuel tank, (Not shown). Here, the filler pipe 330 may be made of stainless steel, steel, or plastic. More specifically, the filler pipe 330 may be provided to include at least one of HDPE multi-material, nylon, and nano materials. This filler pipe 330 can be manufactured by blow molding such as 3D blow.

In the fuel supply unit coupling step S300, the cap holder 310 and the filler pipe 330 are interconnected to complete the fuel supply unit 300. Here, the cap holder 310 and the filler pipe 330 may be connected to each other by heat, rotational fusion or assembly such as welding.

The air-drain portion manufacturing step (S400) forms the air-drain portion 510 including the flange (550). The upper case 511 and the lower case 513 may be formed with an upper flange 551 and a lower flange 553, May be provided integrally. Here, the material of the air drain part 510 and the flange 550 may be steel, stainless steel or plastic.

In the air supplying unit engaging step S500, the upper case 511 and the lower case 513 are brought into close contact with the filler pipe 330. Here, the upper case 511 and the lower case 513 are connected to each other by various fastening methods such as bolting, combination of lock projections and lock grooves, welding, and the like, and are closely attached to the filler pipe 330. An air vent pipe 530 connected to the air filter is connected to the air outlet 511g.

In the car body supporting step S600, the upper flange 551 and the lower flange 553 are connected to the pillar housing 30 so that the pillar neck assembly 100 is supported on the vehicle body.

As described above, the filler neck assembly and the manufacturing method thereof have an effect of minimizing gas leakage in the fuel supply portion and satisfying the reinforced carbon dioxide emission restriction condition that is emerging in recent years. In addition, the filler neck assembly and the manufacturing method thereof minimize the impact applied to the fuel supply unit in the event of an accident, thereby preventing the occurrence of a secondary accident such as a fire due to fuel leakage.

One embodiment of the invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters described in the claims, and those skilled in the art will be able to modify the technical idea of the present invention in various forms. Accordingly, such improvements and modifications will fall within the scope of the present invention as long as they are obvious to those skilled in the art.

100: Filler neck assembly 300: Fuel supply part
310: cap holder 330: filler pipe
331: nozzle support area 333: pipe area
350: inner tube 500: air supply part
510: air drain part 511: upper case
513: Lower case 530: Air vent pipe
550: flange 551: upper flange
553: Lower flange

Claims (8)

A filler neck assembly connected to an external oiling nozzle for guiding the supply of fuel from the oiling nozzle to a fuel tank,
A cap holder into which the injection nozzle is inserted;
A filler pipe having a nozzle support region coupled to the cap holder and supporting the fuel nozzle, and a pipe region extending integrally from the nozzle support region and interconnecting the nozzle support region and the fuel tank; And
And an air drain part integrally provided with a flange for supporting the filler pipe to the vehicle body so as to isolate the filler pipe from the vehicle body and forming a path through which air from the outside is supplied into the vehicle body,
Wherein the air drain part includes an upper case that is in close contact with the outer wall of the filler pipe at the outer side of the nozzle support area and a lower case which is in close contact with the outer wall of the filler pipe to correspond to the upper case,
Wherein the flange includes a first flange connecting the upper case and the filler housing of the vehicle body, a second flange integrally or closely attached to the first flange and connecting the lower case and the filler housing, And a flange cover disposed at a front end of the filler pipe, the flange cover being engaged with the first and second flanges and separated from the filler pipe.
The method according to claim 1,
The upper case
An air drain port extending through the first flange and extending into the filler housing to form a path through which the air in the filler housing flows into the air drain part,
And an air discharging unit for supplying the air introduced into the air drain unit to an air vent pipe connected to the air filter of the vehicle body.
3. The method of claim 2,
The upper case
A filter provided in a plurality of frames protruding from the inner case wall of the upper case between the air drain port and the air discharging unit to filter moisture and foreign matter from the air supplied to the air discharging unit,
Further comprising a water treatment hole forming a path through which the moisture and foreign matter filtered by the filter are discharged to the outside of the upper case.
The method according to claim 1,
The material of the air-
Wherein the filler neck is provided to include at least one of steel, stainless steel, and plastic.
The method according to claim 1,
The material of the cap holder
And at least one of stainless steel and plastic
The filler pipe is made of stainless steel or plastic,
And wherein the filler necks are interconnected by any one of thermal fusion, rotational fusion, and assembly.
6. The method of claim 5,
The plastic
HDPE multi-material, nylon, and nano material.
A method of manufacturing a filler neck assembly, which is connected to an external oiling nozzle and guides the supply of fuel from the oiling nozzle to a fuel tank,
The filler neck assembly includes a cap holder, a filler pipe, and an air drain portion,
A filler pipe manufacturing step of manufacturing the filler pipe by integrally forming a nozzle support region for supporting the fuel nozzle and a pipe region interconnecting the nozzle support region and the fuel tank;
A coupling step of coupling the nozzle support region of the filler pipe and the cap holder to at least one of thermal fusion, rotational fusion, and assembly;
A flange for supporting the filler pipe to the vehicle body such that the filler pipe is isolated through a vehicle body; and an air drain part for integrally forming an air drain part forming a path for supplying air from the outside to the inside of the vehicle body; And
Supporting the flange to a filler housing of the vehicle body,
Wherein the step of manufacturing the air-drain part integrally includes forming an upper case integrally formed with the outer wall of the filler pipe outside the nozzle support region and a first flange supporting the upper case with the vehicle body, And a second flange that is in close contact with the first flange and supports the lower case to the vehicle body,
Wherein the step of supporting the flange is coupled to the first and second flanges by a flange cover disposed at the front end of the first and second flanges and separated from the filler pipe.
8. The method of claim 7,
The filler pipe manufacturing step
Wherein the filler pipe is formed by blow molding.

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