KR20170112333A - Fuel pump filter apparatus and method with electro conductive - Google Patents

Abstract

The present invention relates to a fuel pump having conductivity to exhibit conductivity of a filter omnidirectional using a nanotube having conductivity in a plastic injection molded article, and a method of manufacturing the fuel pump. The fuel pump includes a filter cap 110 provided at the lower end of the fuel pump; An inner 120 connected to a lower portion of the filter cap 110 and including a plurality of legs radially from a lower center of the filter cap 110; And a filter net 130 formed below the filter cap 110 so as to surround the inner panel 120. The filter cap 110 and the inner panel 120 are made of a conductive plastic material .

Description

TECHNICAL FIELD [0001] The present invention relates to a fuel pump filter device having a conductive property,

The present invention relates to a fuel pump having conductivity and a method of manufacturing the fuel pump. More particularly, the present invention relates to a fuel pump having electrical conductivity for exhibiting conductivity in all directions of a filter by utilizing a nanotube having conductivity in a plastic injection molding, .

With the advent of the era of high oil prices, the demand for high-efficiency automobiles (environment-friendly cars) has been expanding in the lineup of mid- to large-sized automobiles. In order to cope with accelerating global warming, the demand for improving fuel efficiency for automobiles, which account for about 20% of total CO ₂ emissions, is steadily increasing. As a result, market demand for high-efficiency automobiles is expanding, and electric vehicles such as electric vehicles and hybrid vehicles are spreading.

Electric and electronic components have increased due to the emergence of electric and hybrid vehicles. In the case of gasoline and diesel vehicles using fossil fuels, the frequency of use of electric and electronic components is increasing for the convenience of the driver. Further, in winter, the frequency of use of electric and electronic parts is also increased for heating of the driver and passenger. The use of electric and electronic components has increased due to the spread of electric and hybrid vehicles. Unexpected static electricity has been generated due to use of electric and electronic parts, and damage due to fire of vehicles has been seen in media such as TV or newspaper.

In particular, the fuel system of a vehicle has various preventive designs to prevent fires caused by fuel in case of driving, parking, or a car accident.

The fuel pump filter, which is a part of the conventional fuel system, uses electric parts in detail and uses a ground terminal using a harness to prevent fire due to the flow of electricity and static electricity. This type of harness was only capable of local (limited) energization with the harness connected. In addition, in the manufacturing method, an additional process of assembling is required in addition to a separate harness part (wire and terminal), resulting in a problem that productivity is lowered.

Accordingly, in recent years, there has been a demand for a fuel pump filter having a charging and energizing function in order to increase the stability of electricity and to prevent an accident (fire) caused by unexpected static electricity.

Korean Utility Model New Public Affairs Office 1999-0040426 ("Antistatic Device for Automobile Fuel Supply Line", Published Nov. 25, 1999)

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems described above, and it is an object of the present invention to provide a nanotube having a conductive property, Fuel pump and a method of manufacturing the same.

The present invention relates to a fuel pump filter device having conductivity, comprising: a filter cap (110) provided at a lower end of a fuel pump (10); An inner 120 connected to a lower portion of the filter cap 110 and including a plurality of legs 121 radially from a lower center of the filter cap 110; The filter cap 110 and the inner panel 120 are formed of a conductive plastic material so as to surround the inner panel 120 under the filter cap 110.

Further, the conductive plastic includes 20 to 30% of a conductive material.

The conductive material may be selected from SUS fiber, carbon black, carbon fiber, and carbon nanotubes.

The conductive plastic may be an antistatic material selected from the group consisting of an amine type, a glycerine type, an amide type, a quaternary ammonium salt type, a sulfonate type, a phosphate type, , Betaine (at least one material), or at least one material.

In addition, the filter cap 110 and the inner panel 120 are integrally formed.

The inner cap 120 is separable from the filter cap 110.

In addition, the filter cap 110 and the inner panel 120 have a unit surface resistance ranging from 10 ⁴ to 10 ¹⁰ Ohm / m 2.

On the other hand, a method for manufacturing a fuel pump filter apparatus includes a preheating step (S100) for preheating an injection apparatus (200) and an injection mold (300); An injection material injection step (S200) of injecting an injection material mixed with a conductive material into a plastic material into the injection apparatus (200); An injection molding step (S300) in which the injection material is injected from the injection apparatus (200), injected into an injection mold (300), and injection molded; And a cooling step (S400) of cooling the injection mold (300).

The injection material is characterized by containing 20 to 30% of a conductive material.

The conductive material may be selected from SUS fiber, carbon black, carbon fiber, and carbon nanotubes.

The injection material may be an antistatic material such as an amine, a glycerine, an amide, a quaternary ammonium salt, a sulfonate, a phosphate, , Betaine (at least one material), or at least one material.

Also, the fuel pump filter device, which is injection-molded through the method of manufacturing the fuel pump filter device, has a surface resistance ranging from 10 ⁴ to 10 ¹⁰ Ohm / m 2.

As described above, the present invention relates to a fuel pump having conductivity and a method of manufacturing the fuel pump, and it is an object of the present invention to provide a fuel pump having conductivity and a method of manufacturing the fuel pump. As a result, it is possible to prevent the occurrence of sparks due to static electricity.

1 is a sectional view of a fuel pump module for a vehicle according to a preferred embodiment of the present invention;
2 is a perspective view of a fuel pump filter device according to a preferred embodiment of the present invention.
3 is an exploded perspective view of a fuel pump filter device according to a preferred embodiment of the present invention.
4 is a flowchart of a method of manufacturing a fuel pump filter device according to a preferred embodiment of the present invention
5 is a conceptual diagram illustrating an injection apparatus and an injection mold according to a preferred embodiment of the present invention.
6 is a graph showing performance of a fuel pump filter device in which a conductive material is mixed according to a preferred embodiment of the present invention

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

1 is a cross-sectional view of a fuel pump module for a vehicle according to a preferred embodiment of the present invention. FIG. 2 is a perspective view of a fuel pump filter device according to a preferred embodiment of the present invention, and FIG. 3 is a cross- Fig. 3 is an exploded perspective view of the fuel pump filter device according to the first embodiment.

Referring to Fig. 1, a fuel pump module for a vehicle will first be described.

The fuel pump module 10 comprises a flange assembly fixed to a fuel tank and a reservoir body assembly connected by a lower guide rod of the flange assembly. In addition, the reservoir body assembly is provided with a fuel pump therein. The fuel pump serves to suck fuel in the fuel tank and send it to the engine of the vehicle.

Here, the fuel pump filter device 100 of the present invention is provided at a lower portion of the reservoir body assembly, and serves to filter out foreign substances when the fuel pump sucks fuel. Further, since the fuel pump filter device 100 of the present invention is mixed with the conductive material, when the fuel pump sucks the fuel, the fuel pump filter device 100 also functions to energize the static electricity generated due to the friction of the fuel.

2 and 3, a fuel pump filter device according to a preferred embodiment of the present invention will be described.

The fuel pump filter device 100 of the present invention is provided at a lower portion of a fuel pump module for a vehicle constituted by a flange assembly and a reservoir body assembly. The fuel pump filter device includes a filter cap 110 disposed at the lower end of the fuel pump and a plurality of legs 121 radially from the lower center of the filter cap 110, And a filter net 130 formed below the filter cap 110 so as to surround the inner panel 120. At this time, the filter net 130 is a fabric material and has a mesh shape.

At this time, the filter cap 110 and the inner panel 120 are made of a conductive plastic material. That is, when the injection molded product of the fuel pump filter is molded using the plastic having the conductive property (charging and energizing function) as a raw material and the nanotube technology, the injection product becomes an electric conductor such as metal and electricity is allowed to pass through. Therefore, there is an advantage that the occurrence of sparks due to static electricity can be prevented.

Particularly, the filter cap 110 and the inner panel 120 can be injection-molded by an injection process. At this time, it is preferable to mix the conductive material and the plastic material in the range of 20 to 30%. When the conductive material is lower than the above range, it is difficult to secure sufficient conductivity, and when it is higher than the above range, the mechanical strength and heat resistance may be deteriorated.

The conductive material may be one material selected from among SUS fiber, carbon black, carbon fiber, and carbon nanotubes, or they may be mixed.

Further, the injection material may further include an antistatic material for preventing the generation of static electricity. The antistatic material may be selected from the group consisting of an amine, a glycerine, an amide, a quaternary ammonium salt, a sulfonate, a phosphate, a betaine, (Betaine), or at least one material may be mixed.

When such conductive and antistatic materials are evenly dispersed in a polymer matrix, an electrically conductive polymer material having excellent electrostatic radiation capability can be produced while maintaining inherent properties such as heat resistance and chemical resistance.

The filter cap 110 and the inner 120 manufactured through the injection process may be integrally formed. The filter cap 110 and the inner 120, which are integrally formed, can simplify the assembling process and improve the productivity.

In addition, the inner cap 120 and the filter cap 110 may be separated from each other if necessary.

It is preferable that the filter cap 110 and the inner part 120 to which conductivity is imparted through the injection process have a surface resistance in the range of 10 ⁴ to 10 ¹⁰ Ohm / m 2. This can prevent the generation of static electricity during friction and also have a static dispersion function that emits static electricity without sparking even when an external charged object is contacted.

As shown in FIG. 6, the fuel pump filter device in which the conductive material is mixed by injection molding has excellent mechanical properties, heat resistance characteristics, abrasion resistance characteristics and electrical characteristics when the conductive material is mixed into the injection material by about 20% And can be used for automobiles and electric / electronic parts requiring high rigidity, heat resistance and conductivity.

Accordingly, since the fuel pump filter device of the present invention can impart conductivity only by injection molding, there is no need for a separate component as in the conventional art, and further productivity is improved because no additional assembly is required.

Next, a method for manufacturing a fuel pump filter device according to a preferred embodiment of the present invention will be described.

FIG. 4 is a flowchart illustrating a method of manufacturing a fuel pump filter apparatus according to an embodiment of the present invention, and FIG. 5 is a conceptual diagram illustrating an injection apparatus and an injection mold according to an exemplary embodiment of the present invention.

The method for manufacturing a fuel pump filter device according to the present invention includes a preheating step (S100) for preheating an injection apparatus (200) and an injection mold (300), an injection material injecting step for injecting an injection material mixed with a conductive material into the injection apparatus An injection molding step S300 in which the injection material is injected from the injection apparatus 200 and injected into an injection mold 300 and a cooling step S400 for cooling the injection mold 300, ).

As shown in FIG. 5, the preheating step S100 preheats the injection apparatus 200 and the injection mold 300 to a predetermined temperature for a predetermined time. The injection material may be dried at 80 ° C for 4 to 6 hours or at 90 ° C for 6 to 8 hours using a hot air dryer before molding (before injection into the injection apparatus) using a dehumidifying dryer.

The injection material injection step (S200) is a step of injecting an injection material mixed with a conductive material into the preheated injection apparatus (200).

First, an injection material in which a conductive material is mixed with a plastic material is produced. At this time, the injection material preferably contains 20 to 30% of the conductive material.

The conductive material may be one material selected from among SUS fiber, carbon black, carbon fiber, and carbon nanotube, or may be mixed with at least one material.

Further, the injection material may further include an antistatic material. The antistatic material may be selected from the group consisting of an amine, a glycerine, an amide, a quaternary ammonium salt, a sulfonate, a phosphate, a betaine, (Betaine), and may further include at least one or more materials.

Then, the injection material injection step (S200) injects the injection material mixed with the conductive material into the preheated injection apparatus (200). At this time, the injection apparatus 200 is heated to a temperature in the range of 280 to 290 ° C depending on the site, and the injection mold 300 is heated to a temperature in the range of 70 to 90 ° C.

More specifically, the injection apparatus 200 is provided with a heating device according to its position. The injection apparatus 200 is formed in a hopper shape and a heating device B1 is provided between the injection unit 210 into which the injection material is injected and a nozzle Bn through which the injection material is injected, ) And a Bn (nozzle) region, respectively. At this time, B 1 is heated to 280 ° C, B 2 and B 3 are heated to 285 ° C, and the nozzle 220 (Bn) for injecting the injection material into the injection mold 300 is heated to 290 ° C.

In the injection molding step S300, the injection material is injected from the injection apparatus 200, injected into the injection mold 300, and injection molded. At this time, the fuel pump filter device may be injection molded so that the filter cap 110 and the inner pipe 120 are detachable, and the filter cap 110 and the inner pipe 120 may be integrally injection-molded. In the case of the fuel pump filter device in which the filter cap 110 and the inner pipe 120 are coupled to each other, the inner pipe 120 is connected to the filter cap 130 before the inner pipe 120 is coupled to the filter cap 110. And then coupled to the filter cap 110. In the case of the fuel pump filter device in which the filter cap 110 and the inner pipe 120 are integrally injected, the filter network 130 is installed to surround the inner portion 120 of the injected fuel pump filter device. At this time, the filter net 130 is a fabric material and has a mesh shape.

The cooling step S400 is a step of cooling the injection mold 300 after the injection molding step S300 to manufacture the injection-molded fuel pump filter device.

Since the fuel pump filter device manufactured through the method of manufacturing the fuel pump filter device of the present invention is manufactured by mixing the conductive material, the characteristics shown in FIG. 5 are exhibited. For example, a fuel pump filter device is characterized by a surface resistance ranging from 10 ⁴ to 10 ¹⁰ Ohm / m 2. This can prevent the generation of static electricity during friction and also have a static dispersion function that emits static electricity without sparking even when an external charged object is contacted.

10: Fuel pump
100: Fuel pump filter device
110: Filter cap
120: Inner
121: leg
130: filter network
200: Injection device
210: inlet
220: Nozzle
300: injection mold

Claims (12)

In the vehicular fuel pump (10)
A filter cap 110 provided at a lower end of the fuel pump 10;
An inner 120 connected to a lower portion of the filter cap 110 and including a plurality of legs 121 radially from a lower center of the filter cap 110;
And a filter net (130) formed below the filter cap (110) and surrounding the inner wall (120)
Wherein the filter cap (110) and the inner pipe (120) are made of a conductive plastic material.
The method according to claim 1,
The conductive plastic
And 20-30% of a conductive material.
3. The method of claim 2,
The conductive material
SUS Fiber, Carbon Black, Carbon Fiber, and Carbon Nano Tube.
The method of claim 3,
The conductive plastic
Amine, Glycerine, Amide, Quaternary ammonium salt, Sulfonate, Phosphate, Betaine, and the like, which are anti-static materials, ≪ / RTI > further comprising at least one material or at least one material selected from the group consisting < RTI ID = 0.0 > of: < / RTI >
3. The method of claim 2,
The filter cap 110 and the inner 120
Wherein the fuel pump is integrally formed.
3. The method of claim 2,
The inner (120)
Is separable from the filter cap (110).
The method according to claim 3 or 4,
The filter cap 110 and the inner 120
Wherein the unit surface resistance is in the range of 10 ⁴ to 10 ¹⁰ Ohm / m 2.
A method for manufacturing a fuel pump filter device according to claim 1,
A preheating step (S100) for preheating the injection apparatus (200) and the injection mold (300);
An injection material injection step (S200) of injecting an injection material mixed with a conductive material into a plastic material into the injection apparatus (200);
An injection molding step (S300) in which the injection material is injected from the injection apparatus (200), injected into an injection mold (300), and injection molded; And
A cooling step (S400) of cooling the injection mold (300);
Wherein the fuel pump is provided with a fuel pump.
9. The method of claim 8,
The injection material
Wherein the conductive material comprises 20 to 30% by weight of the conductive material.
10. The method of claim 9,
The conductive material
SUS Fiber, Carbon Black, Carbon Fiber, and Carbon Nano Tube.
11. The method of claim 10,
The injection material
Amine, Glycerine, Amide, Quaternary ammonium salt, Sulfonate, Phosphate, Betaine, and the like, which are anti-static materials, ≪ / RTI > further comprising at least one material selected from one or more of the following materials.
12. The method of claim 11,
Wherein the fuel pump filter device injected through the fuel pump filter device manufacturing method has a surface resistance in the range of 10 ⁴ to 10 ¹⁰ Ohm / m 2.

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