KR20040022967A - Fuel connector - Google Patents

Abstract

PURPOSE: A fuel connector is provided to prevent a back current of fuel by connecting a fuel connector having a fuel back current preventing function with a fuel injection part of a fuel filter. CONSTITUTION: A housing(10) has a hollow inner peripheral surface, and of which one side is combined with a fuel injection part. The housing has a fixing ring(15) and a holding protrusion(17) formed at the hollow inner peripheral surface. A fuel control valve member(20) has one side mounted at a spring member(19) installed on the holding protrusion, and the other side selectively adhered to the fixing ring by elastic force of the spring member. The fuel control valve member is formed of a body part(21) protruded in conical shape to be adhered closely to the fixing ring, and a sealing member(23) mounted at an outer peripheral surface of the body for sealing the fixing ring and the body part.

Description

Fuel connector {FUEL CONNECTOR}

The present invention relates to a fuel connector, and more particularly to a fuel connector that can prevent the back flow of the injected fuel.

In general, after the vehicle engine is assembled, a start test is performed after fuel is injected into the fuel pump to test start performance.

Fuel injection into such a fuel pump is supplied after being filtered through a fuel filter.

1 is a view schematically showing a fuel filter according to the prior art, and FIG. 2 is a cross-sectional view illustrating main parts schematically showing the injection portion of FIG. 1.

As shown in FIG. 1 and FIG. 2, the conventional fuel filter 1 is provided with an injection part 3 into which fuel is injected to one side, and a fuel discharge part 5 from which filtered fuel is discharged to the other side. do.

As shown in FIG. 2, the structure of the injection part 3 of the fuel filter 1 according to the related art has a shape of a simple pipe without a fuel control function.

After the fuel is injected and filtered through the injection unit 3 formed as described above, the fuel is injected into the fuel pump through the fuel discharge unit 5.

However, since the injection part 3 is formed in the shape of a simple pipe without a fuel control function, it is leaked to the outside due to inadequate control means at the time of reflux of the fuel, and there is a problem of fuel waste and ambient pollution.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems described above, and provides a fuel connector capable of preventing a backflow of fuel by connecting a fuel connector having a fuel backflow prevention function to an injection portion of a fuel filter. have.

1 shows schematically a fuel filter according to the prior art;

Figure 2 is a sectional view of the main portion schematically showing the injection portion of FIG.

3 schematically illustrates a fuel filter equipped with a fuel connector according to a preferred embodiment of the present invention.

4 is a cross-sectional view taken along the line A-A of the fuel connector of FIG.

5 is a view showing a fuel control valve member of the fuel connector of FIG.

6 is a cross-sectional view taken along the line B-B of FIG.

7 shows schematically the operation of the fuel connector of FIG.

<Explanation of symbols for the main parts of the drawings>

10.Housing 11 ... Fuel Filter

12 Fuel 13 Fuel injection section

15 ...

19 ... spring member 20 ... fuel control valve member

21 Body part 23 Sealing member

25 ... pipeline

The fuel connector of the present invention for achieving the above object, in the fuel connector mounted on the fuel injection portion of the fuel filter, the hollow and one side is coupled to the fuel injection portion, the hollow inner circumferential surface has a locking ring and the locking step A housing provided; And a fuel control valve member installed at one side of the spring member installed at the locking jaw, the other side of the spring member being selectively attached to the locking ring by the elastic force of the spring member.

In the present invention, the fuel control valve member,

A body part having one side protruding in a conical shape such that the conical part is selectively in close contact with the locking ring by the elastic force of the spring member; And a sealing member mounted on an outer circumferential surface of the body portion.

In the present invention, the interior of the body portion is formed with a pipe, the outer peripheral surface is characterized in that the through-hole is in communication with the pipe.

Hereinafter, a fuel connector according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention and to those skilled in the art to fully understand the scope of the invention. It is provided to inform you.

3 is a view schematically showing a fuel filter equipped with a fuel connector according to a preferred embodiment of the present invention, FIG. 4 is a cross-sectional view taken along line AA of the fuel connector of FIG. 3, and FIG. 5 is a fuel of the fuel connector of FIG. 3. A control valve is shown and FIG. 6 is sectional drawing along the BB line of FIG.

As shown in FIGS. 3 to 6, the fuel connector 100 according to the present invention is mounted on the fuel injection unit 13 of the fuel filter 11, and is mounted on the fuel injection unit 13. 10 and a fuel control valve member 20 mounted in the housing 10 to control the flow of fuel.

The housing 10 is hollow and one side thereof is coupled to the fuel injection unit 13, and the locking ring 15 and the locking jaw 17 are provided on the hollow inner circumferential surface. The locking jaw 17 is provided with a spring member 19.

One side of the spring member 19 is supported by the locking jaw 17, and the other side of the spring member 19 is mounted to the fuel control valve member 20.

The fuel control valve member 20 has one side protruding in a conical shape so that the body portion 21 is in close contact with the engaging ring 15 by the elastic force of the spring member 19 when the external force is not acting; Mounted on the outer circumferential surface of the body portion 21 is provided with a sealing member 23 for sealing the locking ring 15 and the body portion 21. As shown in FIG. 5, the body portion 21 has a conduit 25 formed therein, and a plurality of fine through holes 27 are provided on the outer circumferential surface thereof so as to communicate with the conduit 25.

The operation of the fuel connector according to the present invention having the above configuration will be described schematically.

7 is a view schematically showing the operation of the fuel connector according to the present invention, as shown, when the fuel 12 is introduced into one side of the fuel connector 100, the fuel by the pressure of the fuel 12 The control valve member 20 is pushed and moved while overcoming the elastic force of the spring member 19.

Then, the fuel 12 flows into the body portion 21 through the plurality of through holes 27 provided in the body portion 21 of the fuel control valve member 20.

In addition, the fuel 12 introduced into the body 21 is injected into the fuel filter 11 through the conduit 25.

In addition, since the fuel control valve member 20 is in close contact with the locking ring 15 by the elastic restoring force of the spring member 19 after the injection of the fuel is completed, it is possible to prevent the outflow during the reverse flow of the fuel remaining after the injection. Make sure

The fuel connector according to the present invention as described above has the following effects.

By injecting fuel by connecting a fuel connector having a fuel backflow prevention function to the injection portion of the fuel filter, it is possible to prevent backflow of remaining fuel after fuel injection, thereby preventing fuel waste and environmental pollution.

The present invention has been described above with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments falling within the scope equivalent to the present invention are possible by those skilled in the art. Therefore, the true scope of protection of the present invention should be defined by the following claims.

Claims (3)

In the fuel connector mounted on the fuel inlet of the fuel filter, A housing having one side coupled to the fuel injecting unit and a hollow inner circumferential surface and having a locking ring and a locking step; And One side is mounted to the spring member is installed on the locking jaw, the fuel connector provided with a fuel control valve member is installed so that the other side is in close contact with the locking ring by the elastic force of the spring member. The method of claim 1, The fuel control valve member, A body part having one side protruding in a conical shape such that the conical part is selectively in close contact with the locking ring by the elastic force of the spring member; And And a sealing member mounted on an outer circumferential surface of the body portion. The method of claim 2, The inside of the body portion is formed with a pipe, the outer peripheral surface of the fuel connector, characterized in that the through-hole is in communication with the pipe.