JPS63218218A - Oil filter - Google Patents

Abstract

PURPOSE:To easily combine an element with a protector and to surely seal between them, by providing elastic members between a projecting part of the protector and one end plate of the element and between the other end plate of the element and a flange part of an element supporting member. CONSTITUTION:A 1st elastic member 4 is provided between the projecting part 2a around the outer periphery of the protector 2 and one end plate 3a of the element 3, and a 2nd elastic member 7 is provided between the other end plate 3b of the element 3 and the flange part 6a of a relief valve housing 6. As a result, the element 3 is easily combined with the protector 2, and the flowing of unfiltrated oil into the inside of the protector is surely prevented, and moreover, the manufacturing cost of oil filter is reduced in comparison with the ordinary method using adhesives.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an oil filter for filtering lubricating oil for internal combustion engines.

[Prior Art] As shown in FIG. 8, in a conventional oil filter, an element 3 whose both ends are held by end plates 3a and 3b is fixed to the outer periphery of a cylindrical protector 2. Using a thermoplastic resin adhesive 20 between the inner circumferences of the end plates 3a and 3b, unfiltered oil is transferred to the protector 2 from between the outer circumference of the protector 2 and the inner circumferences of the end plates 3a and 3b. It prevented it from flowing inside.

[Problems to be Solved by the Invention] However, in the case where the thermoplastic resin adhesive 20 is used to seal between the outer circumference of the protector 2 and the inner circumference of the end plates 3a and 3b, the protector 2 and the inner circumference of the end plates 3a and 3b are sealed. Equipment such as equipment for supplying the thermoplastic resin adhesive 20 between the inner circumferences of the end plates 3a and 3b, and an adhesive heater for melting the thermoplastic resin adhesive 20 is required. Become.

In addition, those using conventional thermoplastic resin adhesive 20,
It is necessary to maintain an appropriate amount of thermoplastic resin adhesive 20 on the entire circumference between the protector 2 and the end plates 3a and 3b, and the layer thickness of the adhesive must be controlled. If it is inappropriate, for example, problems such as the overflowing adhesive may adhere to tools or other equipment used for applying pressure during bonding, or a gap may occur between the protector 2 and the end plates 3a and 3b. I am holding.

SUMMARY OF THE INVENTION An object of the present invention is to provide an oil filter that assembles a protector and an element in a simple work process and has excellent oil tightness between the protector and the end plate of the element.

[Means for Solving the Problems] In order to achieve the above object, an oil filter according to the present invention includes a cylindrical case with one end closed, a central part of the cylindrical case, a filtration element mounted on the outer periphery of the protector and having both ends held by end plates; an element support member mounted on the outer periphery of the protector and having a flange portion on the outer periphery; a first elastic member disposed between the protrusion of the protector and one end plate of the filtration element; and a first elastic member disposed between the other end plate of the filtration element and the flange of the element support member. The technical means is to consist of a second bullet member.

[Function] With the above configuration, the first elastic member is arranged between the convex part of the protector and one end plate of the element, and the second elastic member is arranged between the other end plate of the element and the flange part of the element support member. By arranging the elastic member and fixing the element supporting member and the protector while pressing the element supporting member toward the element, fixing of the protector and the element is completed.

As a result, the first elastic member between the protrusion of the protector and one end plate of the element is pressed, and the space between the protrusion of the protector and one end plate of the element is sealed.

Further, the second elastic member between the 7-run portion of the element support member and the other end plate of the element is pressed, thereby sealing between the flange portion of the element support member and the other end plate of the element.

[Effects of the Invention] According to the present invention, the first elastic member is disposed between the convex portion of the protector and one end plate of the element, and the first elastic member is provided between the other end plate of the element and the flange portion of the element support member. The protector and the element are assembled by disposing the second elastic member between them and fixing the element support member and the protector while pressing the element support member toward the element. Assembly becomes easier.

Furthermore, the first elastic member and the second elastic member are provided between the convex portion of the protector and one end plate of the niremen 1~, and between the other end plate of the element and the flange portion of the element support member. Since it is reliably sealed, it is possible to reliably prevent unfiltered oil from flowing into the protector.

Furthermore, compared to using conventional adhesives, not only is it unnecessary to manage the appropriate amount of adhesive and adhesive layer thickness, but also the need for a heater for heating the adhesive and a Since no equipment is required, the manufacturing cost of the oil filter can be kept low.

[Example] Next, an oil filter of the present invention will be described based on an example shown in the drawings.

FIG. 1 shows a side sectional view of the oil filter A.

This oil filter A includes a cylindrical case 1 with one end closed.

A cylindrical protector 2 is disposed in the center of this cylindrical case 1. This protector 2 has a protrusion 2 on the entire circumference of the outer circumference of the protector 11;
A is provided. Furthermore, a plurality of oil circulation holes 2b are provided at an intermediate position of the protector 2, which communicate the inner and outer circumferences of the protector 2. Further, on the r'Ajj'I side of the cylindrical case 1 of the protector 2, as shown in FIG. 5 and FIG. It is formed.

The outer periphery of this protector 2 has end plates 3a at both ends.

The filter element 3 of this embodiment, in which the filter element 3 held by the filter element 3b is attached, is of a crystal type, as shown in FIG.

Note that the intermediate position of the protector 2 is a position corresponding to the inner peripheral side of the filter element 3, and the oil circulation hole 2b is opened at this position.

As shown in FIG. 3, a first elastic member 4 made of a rubber O-ring is disposed between the convex portion 2a on the outer periphery of the 10-tector 2 and one end plate 3a of the element. , I(#) prevents unfiltered oil from flowing into the protector 2 from between the protector 2 and one end plate 3a of the element.

A relief valve 5 is provided in the wavy portion 2c of the protector 2 at the inner peripheral position of the end of the wavy portion 2crill of the protector 2.
A leaf valve housing 6 is fitted to support the valve. As shown in FIG. 4, the relief valve 5 is attached to the inner periphery of the relief valve housing 6 with rivets 5b, together with a plate spring 5a having an opening through which oil passes inside. Further, as shown in FIG. 4, a flange portion 6a is provided on the outer periphery of the relief valve housing 6, and the relief valve housing 6 also serves as an element support member of the present invention.

Between the other end plate 3b of the element 3 and the flange portion 6a of the relief valve housing 6, a second
As shown in the figure, a second elastic member 7 made of a rubber O-ring is provided to prevent unfiltered oil from flowing into the protector 2 from between the protector 2 and the other end plate 3b of the element. Preventing.

The protector 2 with the element 3 assembled therein is supported within the cylindrical case 1 by a coil spring 8 and an annular plate 9. This plate 9 is provided with an oil outlet hole 9a on its inner periphery for introducing filtered oil, and a plurality of oil holes 9b for introducing unfiltered oil into the cylindrical case 1 on its outer periphery. ing. Further, this plate 9 is fixed by projection welding to an annular end plate 10 at the position of the recess 11, and the annular end plate 10 is joined to the open end of the cylindrical case 1 by seaming. By doing so, it is supported by the cylindrical case 1.

The end plate 10 includes a plurality of locking pawls 10a, and supports a ring-shaped gasket 12 on the open side of the cylindrical case 1.

A plurality of inlet holes 9 are provided between the protector 2 and the plate 9.
An annular plate-shaped check valve 13 is provided which opens in response to the hydraulic pressure of oil flowing in from b.

As mentioned above, the oil filter A consists of each component,
To attach the oil filter to the oil filter provided on the inner circumferential surface of the oil outlet hole 9a of the plate 9, the female thread serving as the screw portion is engaged with the outer circumferential male thread provided on the engine block (not shown). It can be installed by rotating case 1 and screwing it in.

Note that the passage for unfiltered oil in the oil filter A is shown by a broken line arrow, and the passage for filtered oil is shown by a solid line arrow.

Next, the assembly of the protector 2 and element 3 of the oil filter A will be explained.

The first elastic member 4 is fitted onto the outer periphery of the protector 2 from the end surface on the wavy portion 2C side of the protector 2, and the convex portion 2 of the protector 2
The zero-order element 3 is fitted from the end surface of the wavy portion 2c (!!l) of the protector 2, and one end plate 3a of the element 3 is brought into contact with the first elastic member 4. A relief valve housing having a second elastic member 7 fitted onto the outer periphery of the protector 2 from the end surface on the side of the corrugated portion 2C of the protector 2 and having a flange portion 6a which is brought into contact with the other end plate 3b of the element 3. 6 is fitted into the wavy portion 2c of the protector 2, the flange portion 6a is brought into contact with the second elastic member 7, and the relief valve housing 6 is pressed toward the element side, and the relief valve housing 6 and the protector are The assembly of the protector 2 and the element 3 is completed by the zero or more steps of fixing the protector 2 and the element 3. Therefore, according to the present invention, the protector 2 and the element 3 can be easily assembled.

Further, the space between the convex portion 2a of the 10 protector 2 and one end plate 3a of the element is sealed by the first elastic member 4,
By sealing between the other end plate 3b of the element and the flange portion 6a of the relief valve housing 6 by the second elastic member 7, there is no gap caused by adhesive leakage, etc. when using adhesive. Since there is no possibility of this occurring, unfiltered oil will not flow into the 10 techta 2.

Furthermore, since a heater for heating the adhesive and equipment for supplying the adhesive, which are required when using the thermoplastic resin adhesive 20, are not required, the manufacturing cost of the oil filter can be kept low.

In addition, as another example of the method of coupling the 10 Tektor 2 and the relief valve housing 6, the corrugated portion may not be formed on the end face of the 10 Tektor 2, and after fitting the two, pressing and caulking may be performed. Alternatively, it is also possible to process both into a screw shape and screw them together.

In addition, in this example, a rubber O-ring was used as the elastic member, but an elastic sheet with a square cross section,
Alternatively, other elastic members may be used.

Further, in this embodiment, the cross-sectional shape of the element 3 is crystal-shaped, but the cross-sectional shape of the element 3 is not particularly limited, and may be other shapes, such as chrysanthemum-shaped.

[Brief explanation of the drawing]

FIG. 1 shows an oil filter showing an embodiment of the present invention. 2 and 3 are partially enlarged views of Fig. 1, Fig. 4 is a side sectional view of the relief valve and relief valve housing, Fig. 5 is a plan view of the 10 Tector, and Fig. 6 is FIG. 7 is a sectional side view of the protector, FIG. 7 is a sectional view of the element, and FIG. 8 is a side sectional view of the main part of a conventional oil filter. In the diagram: 1... Cylindrical case 2... 10 Tekta 2a
...Convex portion 3...Filtering element 3a, 3b...
-Element end plate 4...first elastic member 6...
Relief valve housing 6a...flange part 7
...Second elastic member

Claims (1)

[Claims] 1) A cylindrical case with one end closed; a protector disposed at the center of the cylindrical case and having a convex portion around the entire outer periphery; and a protector mounted on the outer periphery of the protector. , a filtration element held at both ends by end plates; an element support member attached to the outer periphery of the protector and having a flange portion on the outer periphery; and between a convex portion of the protector and one end plate of the filtration element. and a second elastic member disposed between the other end plate of the filter element and the flange portion of the element support member. 2) The oil filter according to claim 1, wherein the element support member is provided integrally with a relief valve housing that supports a relief valve on the inner periphery of one end of the protector. 3) The oil filter according to claim 1 or 2, wherein the first elastic member and the second elastic member are provided as O-rings made of rubber.