RU2354438C2 - Method for cover fixation in oil filter body - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention is related to the field of propulsion engineering and is designed for realisation of methods for connection of different designs of oil filters. Method for fixation of cover in oil filter body consists in cover installation deep in body on previously arranged elastic projection, realisation of their mutual fixation by method of pressing and cover closure by sealing. The novelty is arrangement of cover as assembled from shield and amplifier, and fixation is carried out in the form of stage press fitting, which includes preliminary press fitting of amplifier with further press fitting of shield with sealant, and closure is done by upper part of body in the form of cartridge. Invention makes it possible to provide for reliable force of tension, which excludes cover slippage not only relative to body, but also relative to engine.

EFFECT: accordingly, tightness, quality and reliability of filter are increased as a whole, its assembling capacity is increased, percentage of rejected filters is reduced, there is possibility to automate technological process.

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Description

The invention relates to the field of engine engineering and is intended to implement methods for connecting different designs of oil filters.

A known method of fixing the cover in the oil filter housing, which consists in the following: the cover is installed in the inner part of the filter housing with their subsequent mutual fixation. Previously, an elastic ledge is made in the housing in its upper part from the end edge. Then install the cover inside the case so that it rests on an elastic ledge. After that, they are mutually fixed by pressing in to ensure a predetermined interference fit, followed by closing the lid in the housing by rolling (Russian patent No. 22918977, class 7 B01D 35/30, published on December 20, 2003 Bull. No. 9).

Its implementation is aimed at solving the problem - providing reliable interference fit.

The disadvantage of this method is the high complexity, the complexity of the technological process of collecting parts, which leads to an increase in the cost of the cost of the filter.

This technical solution, as the closest in functionality and technical result that is achieved, is selected as a prototype.

The basis of the invention is the task of creating such a method of fixing the cover in the housing of the oil filter, which would provide reliable tightness, which eliminates the rotation of the cover not only relative to the housing, but also relative to the engine. Accordingly, the tightness, quality and reliability of the filter as a whole increase, its mounting ability increases, the percentage of defective filters decreases, and there is the possibility of automating the process.

This method also allows you to unify the process of assembling the cover with the filter housing with a certain range of differences in their sizes that are connected, while at the same time ensuring a predetermined interference value from rotation. In addition, the process of recycling used filters is ensured, and the ecological state of the environment improves.

This problem is solved in the following way: in the method of fixing the lid in the oil filter housing, which includes installing the lid deep into the housing on a previously made elastic ledge, performing their mutual fixation by pressing and closing the lid with a roll, according to the invention, the lid is made of a cover plate and an amplifier, and fixing occurs in the form of a phased mounting, which includes pre-pressing the amplifier followed by pressing on the lining with a seal, and the closure is performed top part of the body in the form of clips. An elastic ledge is carried out at a distance from the end edge of the filter housing, corresponding to at least the height of the cover, increased by the height necessary for closure, equal to 0.02-5.0 mm in the form of a groove directed deep into the oil filter housing.

In addition, an elastic ledge is formed by performing a cylindrical part of the filter housing with a difference in its inner diameters, the inner diameter in the upper part from the end edge being greater than the inner diameter of the cylindrical part after the elastic ledge by 0.02-7.0 mm. The outer surface of the amplifier cover is made, for example, cylindrical, and the surface of the filter housing is made of different thickness. To increase the tightness of the filter in the upper part, they are rolled deep into the housing.

The method is explained by specific examples of its implementation.

Example No. 1.

On a thin-walled casing (see Fig. 1 - lid fixing unit in the oil filter casing, Fig. 2 - assembly 1, shown on a specific filter design and corresponding to Fig. 1), made, for example, by stamping, in its upper part from the end the edges on the outer surface groove at a distance corresponding to the height of the cover, increased by the height of the flanging. The groove depth is, for example, 1.5 mm.

Further deep into the housing on the surface of the elastic ledge install a cover made of a lining 5 (figure 1) and a lid amplifier 4. Next, first press-fit the lid amplifier, and then lining with a seal. The space between the housing 1, the cover amplifier 4, the cover 5 is sealed, for example, with a rubber gasket 6, and their mutual fixation is carried out by the upper part of the body in the form of a cage, for example, by rolling the end surface of the housing in the direction of the filter axis from the side of the outer end surface of the cover lining . The fixation is carried out as if from two sides: from the side of the surface of the groove 3, the lid amplifier is clamped and from the seaming side, the lid is finally fixed. To increase the tightness of the filter, it can additionally be carried out in the upper part of the filter rolling into the body.

Thus, the lid is fixed in the oil filter housing using the stage of step-by-step mounting of the assembly cover, ensuring their reliable connection.

Example No. 2.

All technological operations are carried out analogously to example 1, but the depth of the groove is equal to 0.8 mm. With this embodiment, the depth of the groove also achieves the technical result that is claimed.

Example No. 3

The cylindrical surface 2 of the filter housing (Fig. 1) is rolled out on a special device in such a way from its end edge at a height corresponding to the height of the cover increased by the closure height so that the inner diameter in its upper part is larger than the inner diameter after the step, for example, by 0 , 04 mm Further, all technological operations are carried out analogously to example 1. With this method, the technical result is also achieved, which is claimed.

Compared with the prototype, the proposed method has technological advantages.

Claims (8)

1. The method of fixing the lid in the housing of the oil filter, which includes installing the lid deep into the housing on a previously made elastic ledge, performing their mutual fixation by pressing and closing the lid with a roll, characterized in that the lid is made of a cover plate and an amplifier, and the fixation takes place in the form step-by-step press-fit, which includes pre-press-fit of the amplifier with subsequent press-fit of the lining with a seal, and closure is performed by the upper part of the body in the form of a cage. 2. The method according to claim 1, characterized in that the elastic ledge is carried out at a distance from the end edge of the filter housing, at least corresponding to the height of the cover, increased by the height necessary for closure. 3. The method according to claim 1, characterized in that the elastic ledge is performed to a depth equal to 0.02-5.0 mm 4. The method according to each of the preceding paragraphs, characterized in that the elastic ledge is performed in the form of a groove directed deep into the oil filter housing. 5. The method according to each of the preceding paragraphs, characterized in that the elastic ledge is formed by performing a cylindrical part of the filter housing with a difference in its inner diameters, the inner diameter in the upper part from the end edge being greater than the inner diameter of the cylinder part after the elastic ledge by 0, 02-5.0 mm. 6. The method according to claim 1, characterized in that the outer surface of the lid amplifier is cylindrical. 7. The method according to claim 1, characterized in that the surface of the filter housing is made of different thickness. 8. The method according to claim 1, characterized in that in order to increase the tightness of the filter in the upper part, they are rolled deep into the housing.

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