RU2323031C1 - Method of locking cover in oil filter housing - Google Patents

Abstract

FIELD: mechanical engineering; oil filters of internal combustion engines.

SUBSTANCE: invention relates to methods of connection of oil filters of different makes. Proposed method of locking of cover in oil filter housing includes preliminary making of resilient step in housing in its upper part from end face edge, and fitting of oil filter cover onto said step with subsequent relative fixing. Cover of oil filter is made up of cover plate and reinforcement, space between housing, cover reinforcement and cover plate is sealed and their relative locking is provided by upper part of housing in form of holder. Invention makes it possible to assemble cover and filter housing at some difference in mating dimensions and to provided preset value of preload against turning.

EFFECT: provision of recycling of waste filters, no adverse effect on environment.

4 cl, 3 ex, 2 dwg

Description

The invention relates to the field of engine engineering and is intended to implement methods for connecting various 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 in the inside of the housing 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 locking the lid in the housing by rolling (Russian patent No. 22118977, class 7 B01D 35/30, publ. 12/20/2003).

This invention as the closest in technical essence and functionality is taken as a prototype.

Its implementation is aimed at solving the problem - providing reliable interference fit, as well as reducing the number of components.

The disadvantages of this method are the great complexity, the complexity of the technological process of assembly / disassembly of parts, which leads to an increase in the cost of the cost of the filter.

The basis of the invention is the task of creating such a method of fixing the cover in the filter housing, which would provide a reliable interference force, excluding the rotation of the cover not only relative to the housing, but also relative to the engine. Accordingly, increased tightness, quality and reliability of the filter as a whole, increases its mounting ability.

This method allows you to unify the process of assembling the cover with the filter housing with a certain range of differences in their mating sizes, at the same time ensuring a predetermined amount of interference 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 cover in the oil filter housing, including the preliminary execution of an elastic step in the housing in its upper part from the end edge, installing the oil filter cover on it with their subsequent mutual fixation, according to the invention, the oil filter cover is made of lining and amplifier cover, the space between the housing, the amplifier cover and the lining is sealed with a sealant, and their mutual fixation is carried out by the upper part of the housing in the form of a cage.

An elastic ledge is carried out at a distance from the end edge of the filter housing, corresponding at least to the height of the cover, increased by the height necessary for locking, to a depth of 0.02-5.0 mm.

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 method is illustrated by specific examples of its implementation.

Example 1

On a thin-walled casing (see Fig. 1 - lid fixing assembly 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 edges on the outer surface groove at a distance corresponding to the height of the cover, increased by the height of the flanging. The depth of the groove corresponds, for example, to 1.5 mm.

Further deeper into the housing, on the surface of the elastic ledge, a cover is installed made of a lining 5 (Fig. 1) and a cover amplifier 4 so that the surfaces of the groove and the cover amplifier are mated to the guaranteed interference value. Then, the space is sealed between the housing 1, the cover amplifier 4, the lining 5, for example, a rubber gasket 6, and their mutual fixation is carried out by the upper part of the housing in the form of a cage, for example, the end face of the housing rolls in the direction of the filter axis from the outer end surface of the cover lining. The fixation is carried out from two sides: from the side of the surface of the groove 3, the lid amplifier is clamped and the lid is finally fixed from the seaming side. Thus, the lid is fixed in the casing of the oil filter by a cage, ensuring their reliable connection.

Example 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 claimed technical result.

Example 3

The cylindrical surface 2 of the filter housing (Fig. 1) is rolled out on a special tool in such a way from its end edge at a height corresponding to the height of the lid increased by the locking 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 claimed technical result is also achieved.

Compared with the prototype, the proposed method has technological advantages. It meets the criteria of novelty, inventive step and industrial applicability and may be protected by a patent for an invention.

Claims (4)

1. The method of fixing the cover in the housing of the oil filter, including the preliminary implementation of the elastic ledge in the housing at its upper part from the end edge, installing an oil filter cover on it with their subsequent mutual fixation, characterized in that the oil filter cover is made of a lining and a cover amplifier , the space between the housing, the cover amplifier and the cover is sealed with a sealant, and their mutual fixation is carried out by the upper part of the housing 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 locking. 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 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.

Images