KR101074518B1 - Improved check valve for fuel supply module - Google Patents

Abstract

The present invention relates to an improved check valve of a fuel supply module, and more particularly, to a fuel supply module coupled to a fuel tank in which fuel is stored and supplying fuel to an engine, the upper and lower surfaces of the fuel supply module. The check valve is formed into a disc shape to allow the fuel to flow naturally into the fuel supply module reserve cup, and is positioned in the check valve assembly in the fuel supply module, and drills suction holes in the upper and side surfaces of the check valve assembly. The check valve is formed by corresponding coupling so that the check valve is lifted by the inflow of fuel between the bottom of the check valve assembly and the cover, and the lift amount of the check valve is increased by the assembly height H between the cover and the check valve assembly. Improved check valve of the fuel supply module to be adjusted, and to form a protrusion on the check valve to increase the sealing effect during the reflux of the fuel Relate to.

Fuel supply module, reserve cup, check valve, sealing

Description

IMPROVED CHECK VALVE FOR FUEL SUPPLY MODULE}

The present invention relates to an improved check valve of a fuel supply module having an improved shape of a check valve for naturally introducing fuel into a fuel supply module.

After the vehicle is manufactured, if a small amount of fuel is injected into the fuel tank to start the initial start, the fuel injected into the fuel tank is naturally introduced into the fuel supply module which is assembled inside the fuel tank to supply fuel to the engine. do.

The component that enables the natural inflow as described above is a check valve, and the fuel flowing into the check valve and stored in the reservoir cup is leaked out of the reservoir cup due to the airtightness of the check valve. Prevent leaks.

Initial startability in a finished vehicle is affected by the amount of fuel entering the check valve and the time entering.

FIG. 1 is a view showing a reserve cup to which a check valve is coupled, and FIG. 2 is a view illustrating a coupling relationship between a conventional check valve and a reserve cup. As shown in the drawing, the conventional check valve 120 is a reserve cup. When assembled to the 101, the check valve 120 is used in a way that is fixed in the pinned portion 121 so as not to be separated from the reservoir cup (101).

However, in the above-described method, the amount of fuel introduced by the lift amount of the check valve 120 is small and the check valve 120 is jammed in the fitting portion 121 and the assembly portion of the reserve cup 101, thereby causing natural inflow. There was a problem that became impossible.

Reference numeral 111, which is not described, denotes a guide, 112, a fuel inlet hole, and 110, a check valve control unit.

The present invention has been made to solve the above problems, an object of the present invention is installed on the inner bottom surface of the fuel supply module built in the fuel tank, in the check valve to enable natural inflow of fuel, the check valve It is to provide an improved check valve of the fuel supply module to have the shape of the check valve of the flat plate shape, rather than the conventional umbrella check valve, and to assemble the cover so that the check valve is not separated.

Other objects and advantages of the invention will be described below and will be appreciated by the embodiments of the invention. Furthermore, the objects and advantages of the present invention can be realized by means and combinations indicated in the claims.

The present invention as a means for solving the above problems, while sucking the fuel in the fuel tank to supply to the engine, protruding the guide in an annular shape toward the top from the inner bottom and a plurality of fuel inlet on the inner bottom of the guide What is claimed is: 1. A check valve coupled to an inner bottom surface of a reserve cup of a fuel supply module to form a check valve assembly by drilling, comprising: a cover coupled to surround a top of the check valve assembly and forming a plurality of suction holes; It has a disc shape and is positioned horizontally with the ground in the check valve assembly portion, so that the fuel flowing through the fuel inlet hole is raised between the bottom and the cover of the check valve assembly portion, the fuel flows naturally into the reservoir cup. Check valve to be introduced; And a control unit.

In addition, the cover is characterized in that to control the lifting amount of the check valve by adjusting the assembly height with the check valve assembly.

In addition, the check valve forms a single or a plurality of projections protruding along the circumferential surface, when the fuel flows back, the projections are in line contact with the bottom surface of the check valve assembly formed with the fuel inlet hole is sealed It is characterized by that.

In addition, the cover is made of a base for punching a plurality of suction holes, and a coupling portion protruding toward the bottom along the circumferential surface of the base, and the corresponding coupling with the check valve assembly by inserting a guide into the coupling portion inside It features.

As described above, the present invention is to adjust the lifting amount of the check valve by adjusting the assembly height of the cover corresponding to the upper part of the check valve assembly of the reservoir cup in which the check valve is located to increase the natural inflow of fuel, but natural inflow Time has the effect of reducing.

In addition, it is possible not only to prevent the pinch between the check valve and the reservoir cup, which occur in the related art, but also due to the protrusions formed on the check valve, which has an effect of increasing the sealing effect when the fuel flows back.

Before describing the various embodiments of the present invention in detail, it will be appreciated that the application is not limited to the details of construction and arrangement of components described in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

The present invention has the following features to achieve the above object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

Hereinafter, an improved check valve of a fuel supply module according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7.

As shown, the improved check valve of the fuel supply module according to the present invention is installed in the fuel supply module to improve the check valve to enable the natural inflow of the fuel, as well as the lifting amount is adjusted to prevent departure, Supply module 100, cover 30, check valve 20 is included.

1 is a view showing a reserve cup of a fuel supply module to which a check valve is coupled, wherein the fuel supply module is installed inside a fuel tank (not shown) and serves to suck fuel stored in the fuel tank and supply it to the engine. Do it.

To this end, a check valve assembly 10 to which the check valve 20 is coupled is formed in the reserve cup 41 located at the lower end of the components of the fuel supply module 100.

The check valve assembly 10 is formed on the inner bottom surface of the reservoir cup 41, and includes a guide 12 protruding in an annular shape toward an upper side, and a side of the guide cup inner reservoir cup 41. And a plurality of fuel inlet holes 11 formed in the bottom of the hole.

Fuel is naturally introduced into the reservoir cup 41 through the fuel inlet 11 at the outer lower end of the reservoir cup 41, and the fuel is stored in the reservoir cup 41 through the fuel inlet 11. The check valve 20 prevents backflow and leakage of this fuel.

Figure 3 is an exploded perspective view showing a coupling relationship between the check valve and the cover according to the present invention, Figure 4 is a front cross-sectional view showing a combined state of Figure 3, as shown in the figure, the annular guide 12 The disc-shaped disc-shaped check valve 20 is positioned in the seating part 13 formed by the check valve assembly 10 protruding upwards, and the upper part of the check valve 20 or the check valve assembly part. It has a structure for coupling the cover 30 to the upper portion (10).

The cover 30 has a disc shape and a base 31 for forming a plurality of suction holes 32 and toward the bottom along the circumferential surface of the base 31 (direction toward the check valve assembly 10). ) Is formed of a coupling portion 33 to protrude.

As shown in FIG. 4, the cover 30 is coupled to an upper portion of the check valve assembly 10 with the guide 12 of the check valve assembly 10 inward, and the check valve 20. ) Has a form of lifting up and down between the cover 30 and the check valve assembly 10 (the bottom of the reservoir cup 41). In other words, when the fuel flows upward through the fuel inlet hole 11 formed in the bottom of the check valve assembly 10, that is, the reservoir cup 41, it is seated on the upper portion of the fuel inlet hole 11. The check valve 20 blocking the upper end is lifted upward, and the fuel introduced into the seating part 13 is introduced into the reservoir cup 41 through the suction hole 32 of the cover 30. do. Of course, as the amount of fuel introduced increases, the lifting amount of the check valve 20 will also increase.

5 is another exploded perspective view showing a coupling relationship between the check valve and the cover according to the present invention, Figure 6 is a front cross-sectional view showing a combined state of Figure 5, as shown in the same figure, the fuel reservoir cup 41 ) Or when the fuel flows back, the check valve 20 positioned between the cover 30 and the check valve assembly 10 is seated on an upper surface of the seating portion 13 of the check valve assembly 10. The fuel inlet hole 11 is blocked.

At this time, the bottom of the check valve 20 is in contact with the check valve assembly 10 in the seating portion 13, as shown in Figure 5 or 6, the bottom of the check valve 20 By protruding a single or a plurality of projections (50), it is to be in line contact with the check valve assembly 10, rather than surface contact to improve the sealing (Sealing).

The protrusion 50 protrudes from the bottom of the check valve 20 toward the lower end thereof, and protrudes in an annular shape along the circumferential surface of the check valve 20.

That is, as shown in Figures 3 to 6, by forming a check valve 20 in the shape of a disc, and the cover 30 is coupled to the upper portion, as shown in Figure 2, the conventional check The valve 20 has to be raised and lowered while the protrusions 50 of the check valve assembly 10 are fitted to each other, but a problem in which the mutually interposed portions are fixed is not raised and lowered.

7 is a view showing an embodiment of the coupling of the cover according to the present invention, as shown in the figure, the cover 30 is coupled to the upper portion of the check valve assembly 10, check valve assembly ( By adjusting the assembling height H with 10), the lifting amount of the check valve 20 can be controlled.

In other words, by lifting the coupling portion 33 of the cover 30 so as not to contact the bottom of the reservoir cup 41 in such a degree that the cover 30 is not separated from the check valve assembly 10, As the assembly height H is increased, the distance in which the check valve 20 can be lifted and increased will also be increased, which makes it easy to increase the amount of fuel introduced into the reservoir cup 41.

Of course, in order to increase or decrease the assembly height H, the user may increase the length of the guide 12 of the check valve assembly 10 protruding upward to a predetermined length by a predetermined selection, or It will be apparent that the above method may be performed after the length of the coupling part 33 is increased.

As mentioned above, although this invention was demonstrated by the limited embodiment and drawing, this invention is not limited by this, The person of ordinary skill in the art to which this invention belongs, Various modifications and changes may be made without departing from the scope of the appended claims.

1 is a view showing a reserve cup coupled check valve.

2 is a view illustrating a coupling relationship between a conventional check valve and a reserve cup;

Figure 3 is an exploded perspective view showing a coupling relationship between the check valve and the cover according to the present invention.

4 is a front cross-sectional view showing a combined state of FIG.

Figure 5 is another exploded perspective view showing a coupling relationship between the check valve and the cover according to the present invention.

6 is a front cross-sectional view showing a combined state of FIG.

Figure 7 is a view of one embodiment showing the coupling form of the cover according to the present invention.

<Indication of symbols for main parts of drawing>

10: check valve assembly 11: fuel inlet hole

12: Guide 13: Rest

20: check valve 30: cover

31: base 32: suction hole

33: coupling portion 41: reserve cup

50: turning

Claims (4)

The fuel is sucked into the fuel tank and supplied to the engine, and the check valve assembly is formed by projecting the guide 12 in an annular shape from the inner bottom toward the top and drilling a plurality of fuel inlet holes 11 in the inner bottom of the guide 12. In the check valve 20 is coupled to the inner bottom surface of the reservoir cup 41 of the fuel supply module 100 forming the portion 10, A plurality of suction holes 32 formed in a plurality of perforations and covering and covering the upper portion of the check valve assembly 10; It has a disc shape and is positioned horizontally to the ground in the check valve assembly 10, between the bottom of the check valve assembly 10 and the cover 30 by the fuel flowing from the fuel inlet hole (11). And a check valve 20 for allowing fuel to flow naturally into the reservoir cup 41 to be elevated. The cover 30 is composed of a base 31 for forming a plurality of suction holes 32 and a coupling portion 33 protruding toward the bottom along the circumferential surface of the base 31, the coupling portion ( 33) The improved check valve of the fuel supply module, characterized in that the guide 12 is inserted into the inner side and correspondingly coupled to the check valve assembly 10. The method of claim 1. The cover 30 is an improved check valve of the fuel supply module, characterized in that to control the lifting amount of the check valve 20 by adjusting the assembly height (H) with the check valve assembly 10. . The method of claim 1, The check valve 20 forms a single or a plurality of protrusions 50 protruding along the circumferential surface, so that when the fuel flows back, the protrusions 50 have the fuel inlet 11 formed therein. Part 10 is an improved check valve of the fuel supply module characterized in that the line is in contact with the bottom surface (sealing). delete

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