KR20060033896A - Sealing structure of oil filter for engine - Google Patents

Abstract

A sealing structure of an engine oil filter is disclosed. The sealing structure of the disclosed engine oil filter includes a housing; A filter paper for filtering contaminated engine oil introduced into the housing; Upper and lower fixing members disposed on upper and lower portions of the filter paper to fix the filter paper to the housing; And a gasket disposed inside the upper and lower fixing members to prevent leakage of the engine oil not filtered out of the housing.

According to the present invention, there is an advantage that can prevent the total failure of the engine in advance.

Engine oil filter, filter paper, gasket

Description

Sealing structure of engine oil filter {SEALING STRUCTURE OF OIL FILTER FOR ENGINE}

1 is a view schematically showing the configuration of an engine oil filter according to the prior art.

Figure 2 is a schematic diagram showing a part of the configuration of the sealing structure of the engine oil filter according to another embodiment of the present invention.

Figure 3 is a detailed view showing the main portion of Figure 2 in more detail.

<Description of Symbols for Main Parts of Drawings>

20. Filter paper

21b. housing

21b '. 3rd projection

41.Gasket

41a. spin

The present invention relates to a sealing structure of an engine oil filter, and more particularly, to a sealing structure of an engine oil filter for improving sealing performance of a filter paper in an oil filter of an engine to improve sealing performance.

In general, an internal combustion engine used as a power source of an automobile, etc., necessarily uses engine oil, which is a lubricating oil, for smooth operation of sliding parts such as rotation parts and friction parts.

The engine oil is stored in the oil pan at the bottom of the engine, filtered through the engine oil filter by the pump of the oil pump, and then supplied to each sliding part of the engine along the lubrication circuit complexly formed at each engine part to lubricate the oil. Do it. Thereafter, the oil pan is returned to the oil pan while containing contaminants such as engine wear.

In this series of processes, contaminants such as dust generated by oil and combustion from each sliding part of the engine, as well as oxides caused by oil deterioration and aging, and contaminants such as dust entering the cylinder along with the intake air are filtered. It is the engine oil filter that keeps the oil clean at all times.

The engine oil filter is used to replace only the filtration in the case of a large engine, but in the case of a general small and medium-sized engine is used to replace the whole, including the housing, the configuration is shown in FIG.

Referring to FIG. 1, an engine oil filter having a filter paper 10 inside a housing 11 is coupled to a front case of an engine to introduce contaminated engine oil pumped from an oil pump (not shown) into the housing 11. Let's go.

The housing 11 is formed by combining the upper housing 11a and the lower housing 11b, and the coupling portion coupled to the housing 11 is provided with an o-ring 12 for preventing leakage.

In addition, the housing 11 is provided with a filter paper 10 for filtering the contaminated oil, the filter paper 10 is generally used for paper filter paper.

An upper fixing member 13 and a lower fixing member 14 are disposed on upper and lower surfaces of the filter paper 10. In addition, the valve 16 is formed in the center of the housing, the elastic member 17 and the support member 15 is inserted between the housing 10 to support the components inside the housing 10.

Meanwhile, reference numeral 18 not illustrated in FIG. 1 represents an oil filter core.

The engine oil filter configured as described above introduces contaminated engine oil into the housing 10, and the introduced engine oil is filtered while passing through the filter paper 10 and then supplied to the lubrication circuit.

By the way, the sealing structure of the engine oil filter according to the prior art as described above has a contact structure, and the sealing of the filter paper 10 and the small and large initial manufacturing tolerances may not be perfect sealing.

When the filter paper is deformed by high temperature and high pressure, and the filter paper 10 shrinks relative to the initial state, as shown by reference numeral 'A' in FIG. 1, the bottom surface of the housing 11 and the filter paper 10 ) The sealing surface falls and unfiltered oil flows into the engine.

If such unfiltered oil is introduced into the engine, a fatal problem may occur due to a total failure of the engine.

The present invention was created in order to solve the above problems, by changing the sealing structure in the height direction to block all unfiltered dirty oil inflow due to filter paper deformation, and eventually, the engine oil to prevent the generation of waste throughout the engine The purpose is to provide a sealing structure of the filter.

Sealing structure of the engine oil filter of the present invention for achieving the above object, the housing; A filter paper for filtering contaminated engine oil introduced into the housing; Upper and lower fixing members disposed on upper and lower portions of the filter paper to fix the filter paper to the housing; And a gasket disposed inside the upper and lower fixing members to prevent leakage of the engine oil not filtered out of the housing.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Prior to the description, a detailed description of the general engine oil filter will be described with reference to FIG. 1, and only the characteristic configuration of the sealing structure of the engine oil filter according to the present invention will be described.

Figure 2 is a schematic view showing a part of the configuration of the sealing structure of the engine oil filter according to another embodiment of the present invention, Figure 3 is a detailed view showing the main portion (C) of Figure 2 in more detail Is shown.

In particular, only the sealing ring structure at the lower side of the housing will be described here.

2 and 3, the sealing structure of the engine oil filter according to the present invention, the housing 21b, the filter paper 20 for filtering the contaminated engine oil introduced into the housing 21b, and A lower fixing member 24 disposed below the filter paper 20 to fix the filter paper 20 to the housing 21b, and disposed inside the lower fixing member 24 so as not to be filtered out of the housing 21b. It comprises a gasket 41 for preventing the engine oil from leaking.

A third protrusion 21b 'is formed to support and cover the gasket 41 inside the gasket 41.

The gasket 41 is formed in an 'L' shape so as to be in close contact with the sidewalls of the third protrusion 21b 'of the housings 21a and 21b and at the same time to be in close contact with the bottom of the lower fixing member 24. In addition, the gasket 41 has at least one protrusion 41a formed on a side of the housing 21b which is in close contact with the side wall of the third protrusion 21b '.

In addition, the filter paper 20 and the lower fixing member 24 formed of polyurethane or heat-resistant plastic may be integrally formed, for example, by a heat fusion method, or the gasket 41 made of rubber may be heat-sealed. Or in one other way.

Meanwhile, reference numeral 28 not illustrated in FIGS. 2 and 3 shows an oil filter core.

Referring to the operation of the sealing structure of the engine oil filter according to the present invention having the configuration as described above are as follows.

Referring back to the drawings, the sealing structure of the engine oil filter according to the present invention completely blocked leakage of contaminated oil by deformation of the filter paper 20 by changing the sealing structure in the height direction from the conventional lower surface contact structure.

That is, as described above, the side and the bottom of the upper fixing member (not shown) and the lower fixing member 24 fixing the filter paper 20 in which the polluted engine oil, which has not been previously filtered, leaked, were completely sealed.

In order to implement this, in the embodiment according to the present invention, the third protrusion 21b 'is formed on the gasket 41 and the housing 21b to completely block leakage of the contaminated engine oil.

As described above, the sealing structure of the engine oil filter according to the present invention has the following effects.

By installing leak-proof gaskets for perfect sealing, a perfect sealing structure can be implemented to prevent contaminated oil from entering the engine.

Therefore, the total fail of the engine due to the inflow of impurities in the engine oil can be prevented in advance.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (7)

A housing; A filter paper for filtering contaminated engine oil introduced into the housing; Upper and lower fixing members disposed on upper and lower portions of the filter paper to fix the filter paper to the housing; And a gasket disposed inside the upper and lower fixing members to prevent leakage of engine oil not filtered out of the housing. The method of claim 1, Sealing structure of the engine oil filter, characterized in that the third projection is formed so that the gasket is supported and covered inside the gasket. The method of claim 2, The gasket is in close contact with the side wall of the third projection of the housing, at the same time the sealing structure of the engine oil filter, characterized in that the 'L' shape made to be in close contact with the bottom of the fixing member. The method of claim 3, The gasket is a sealing structure of the engine oil filter, characterized in that at least one projection is formed on the side in close contact with the side wall of the third projection of the housing. The method of claim 1, Sealing structure of the engine oil filter, characterized in that the filter paper and the upper and lower fixing members are formed in one piece. The method of claim 1, The filter paper, the gasket, the upper and lower fixing member is a sealing structure of the engine oil filter, characterized in that made in one piece. The method of claim 1, The gasket is a sealing structure of the engine oil filter, characterized in that made of rubber.

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