JP2004190595A - Element assembly for oil filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an element assembly for an oil filter capable of improving filtering efficiency while maintaining useful life, and facilitating the manufacture of a plurality of types having various performance. <P>SOLUTION: This element assembly for the oil filter 1 comprising a cylindrical member 2 formed with a plurality of holes in the side surface by roll-processing punching metal and an element for filtering oil, which is provided so as to cover the side of the cylindrical member 2, is housed inside a cup-shaped case 12 and carries the oil introduced to the case 12 into the cylindrical member 2 through the element. A first element 3 and a second element 4, which are different in performance (the useful life and filtering efficiency), are installed in the longitudinal direction (in the height direction) in the cylindrical member 2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an oil filter element assembly for filtering oil for an internal combustion engine of an automobile or the like, in particular, a gasoline vehicle.
[0002]
[Prior art]
Conventionally, a cartridge type oil filter used in a gasoline-powered vehicle is provided with a cylindrical member formed by forming a punching metal into a cylindrical shape, and an element for filtering oil, which is provided so as to cover a side surface of the cylindrical member. (See, for example, one disclosed in Patent Document 1). Of these, the element was configured by rolling a predetermined pleated filter paper into an annular shape and covering the side surface of the cylindrical member.
[0003]
The element assembly of the oil filter having the above-described configuration is housed in a cup-shaped case, and the oil introduced into the case is allowed to reach the inside of the cylindrical member through the element, thereby reducing the oil. Was to be filtered. In addition, the type of the element to be attached (the density of the eyes) is selected in consideration of the life of the element. That is, if the mesh of the elements is dense, the filtration efficiency is increased, but the life is shortened. Therefore, the element to be mounted is selected with a priority on the life while sacrificing the filtration efficiency to some extent.
[0004]
[Patent Document 1]
JP-A-11-276814
[Problems to be solved by the invention]
However, in the above-described conventional oil filter element assembly, the element to be mounted is selected with priority given to the life of the element. There is a demand for an element that further improves the filtration efficiency while maintaining the filtration efficiency. That is, there is a demand for an element having a certain level of both life and filtration efficiency.However, since the conventional element is made of only one specific filter paper, if the life is improved, the filtration efficiency is reduced by that amount, If the filtration efficiency is improved, the service life is reduced correspondingly, and the above-mentioned needs cannot be met.
[0006]
However, if one attempts to manufacture an element assembly of an oil filter having various relationships between the service life and the filtration efficiency (hereinafter referred to as “performance”) by one kind of element as needed, an extremely large number of elements are required. There is a problem in that the assembly must be prepared in advance, the management of the assembly is complicated, and the inventory of the element assembly must be large. In addition, in order to individually manufacture the element assembly having a desired balance between the service life and the filtration efficiency, it is necessary to perform a verification test or the like of each element assembly. It was extremely difficult to provide.
[0007]
The present invention has been made in view of such circumstances, and it is possible to improve the filtration efficiency while maintaining the life, and to easily assemble an oil filter element having a variety of performances. Is to provide the body.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 includes a cylindrical member having a plurality of holes formed in a side surface thereof, and an element for filtering oil which is provided so as to cover the side surface of the cylindrical member. And an oil filter element assembly that allows oil introduced into the case to reach the inside of the cylindrical member through the element, and has different performances in the longitudinal direction of the cylindrical member. A plurality of elements are provided side by side.
[0009]
According to a second aspect of the present invention, in the oil filter element assembly according to the first aspect, each of the plurality of elements is arbitrarily adjusted with respect to a longitudinal direction of the cylindrical member so that the plurality of elements are entirely cylindrical. It is characterized in that it is configured to cover the entire side surface of the shaped member.
[0010]
According to a third aspect of the present invention, in the oil filter element assembly according to the first or second aspect, the element comprises a first element and a second element which are provided in a longitudinal direction of the cylindrical member. It is characterized by the following.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The element assembly of the oil filter according to the first embodiment is for filtering oil for an internal combustion engine of a gasoline-powered vehicle, and as shown in FIGS. 1 and 2, a cylindrical member 2 and a first element. 3 and a second element 4. In particular, the first element 3 and the second element 4 have different performances (life and filtration efficiency) from each other, and have the same dimension (dimension a) in the longitudinal direction (vertical direction in FIG. 2) of the cylindrical member 2. Have been.
[0012]
The cylindrical member 2 is made of a pair of upper and lower steels having a plurality of holes formed in a side surface, and is made of, for example, a punched metal formed in a roll shape. The holes formed on the side surface can be arranged and arranged in an appropriate number, and a mesh member formed in a roll shape may be used as a cylindrical member. A first element 3 and a second element 4 are provided on the side surface of each cylindrical member 2 so as to cover the side surface.
[0013]
These elements are for filtering oil, and are formed by rolling a predetermined pleated filter paper into an annular shape and covering the side surface of the cylindrical member 2. Further, as described above, the performances of these elements are different from each other, and, for example, the first element 3 is set coarser than the second element 4. As a result, the first element 3 has a longer life than the second element 4 but has a lower filtration efficiency, and the second element 4 has a longer life than the first element 3. Is short while the filtration efficiency is high.
[0014]
As shown in FIGS. 3 and 4, a substantially annular upper plate member 5 and a lower plate member 6 are formed on the upper and lower surfaces of the first element 3, and a relief valve is provided substantially at the center of the upper plate member 5. 9 are provided. The relief valve 9 mainly includes a valve element 11 and a relief valve spring 10 that constantly urges the valve element 11 upward. The valve body 11 is opened so that oil flows into the cylindrical member 2 without passing through the element.
[0015]
As shown in FIGS. 5 and 6, a substantially annular upper plate 7 and a lower plate 8 are formed on the upper and lower surfaces of the second element 4. 8a are formed. That is, the oil introduced to the outer peripheral surface of the element assembly 1 reaches the inside of the cylindrical member 2 via the first element 3 or the second element 4 (in some cases, via the relief valve as described above). , 8a.
[0016]
If the first element 3 and the second element 4 are connected by bonding or the like in a state of being vertically stacked, an element assembly 1 according to the present embodiment as shown in FIGS. 1 and 2 is obtained. As such a connection method, various general-purpose methods such as screwing, caulking, and welding can be considered in addition to bonding. In the above-described embodiment, the upper and lower cylindrical members 2 are paired. However, the upper half of one cylindrical member is covered by the first element 3 and the lower half is covered by the second element 4. It may be.
[0017]
As shown in FIGS. 7 and 8, the element assembly 1 is accommodated in a cup-shaped case 12 attached to a vehicle, and constitutes an oil filter. The element assembly 1 housed in the case 12 has its upper surface (upper plate 5) pressed down by the set spring 13 while its lower surface (lower plate 8) abuts the cover plate 14. It is clamped and fixed from above and below.
[0018]
An outflow hole 14b corresponding to the opening 8a of the lower plate member 8 is formed substantially at the center of the cover plate 14, and a plurality of inflow holes 14a are formed around the outflow hole 14b. A check valve 15 is formed at a position corresponding to each of the inflow holes 14a, and the backflow of oil introduced from the inflow hole 14a is prevented by the elasticity of the check valve 15. That is, the check valve 15 allows the oil to flow from the inflow hole 14a into the case 12, while restricting the flow from the inside of the case 12 to the inflow hole 14.
[0019]
A seal rubber 16 is attached below the cover plate 14 via a flange plate 17, and the seal rubber 16 seals an oil flow path on the vehicle side with the inside of the case 12. . With such a configuration, the oil introduced into the case 12 from the inflow hole 14a reaches the inside of the cylindrical member 2 via the elements (the first element 3 and the second element 4), and is filtered in the process, and thereafter, It is led to the vehicle side from the opening 8a.
[0020]
According to the present embodiment, since the first element 3 and the second element 4 have different performances from each other and are provided at the upper part and the lower part of one element assembly 1, the desired life of the entire oil filter is obtained. In addition, two elements can be selected and attached in a combination that should achieve the filtration efficiency, the filtration efficiency can be improved while maintaining the life, and the manufacture of the element assembly can be facilitated.
[0021]
In other words, if the first element 3 and the second element 4 are selected as appropriate, the performance of the entire element assembly 1 can be arbitrarily adjusted, and the adjustment to achieve the desired performance becomes easy. . Also, by selecting two elements whose performance has already been verified, it is possible to obtain an oil filter having a performance different from that of each element as a whole, so that the manufacturing cost can be reduced.
[0022]
Next, a second embodiment according to the present invention will be described.
As shown in FIG. 9, the element assembly of the oil filter according to the present embodiment includes a pair of cylindrical members 2 having heights b and c, a first element 3 ′, and a first element 3 ′. And a second element 4 'provided side by side. The first element 3 ′ and the second element 4 ′ have different performances (life and filtration efficiency) from each other, and cover the side surface of each cylindrical member 2, and have respective heights (with respect to the longitudinal direction of the cylindrical member 2). Lengths) are dimensions b and c.
[0023]
That is, the lengths of the two elements 3 ′ and 4 ′ with respect to the longitudinal direction of the cylindrical member 2 (vertical direction in the drawing) are arbitrarily adjusted (in the present embodiment, adjusted to dimensions b and c). Thus, the entirety of the side surface of the cylindrical member 2 is configured to be covered. A substantially annular upper plate member 5 and a lower plate member 6 are formed on the upper and lower surfaces of the first element 3 ′, and a relief valve spring 10 and a valve body 11 are provided substantially in the center of the upper plate member 5. A relief valve 9 is provided.
[0024]
On the other hand, a substantially annular upper plate member 7 and a lower plate member 8 are also formed on the upper and lower surfaces of the second element 4 ', and an opening 8a is formed substantially in the center of the lower plate member 8. Then, the first element 3 'and the second element 4' are vertically stacked and connected by bonding or the like to obtain an element assembly 1 'as shown in FIG. The element assembly 1 ′ is housed in a cup-shaped case 12 to constitute an oil filter and filters oil, as in the first embodiment described above.
[0025]
According to this embodiment, in addition to selecting the type of each element (coarse and dense eyes) and appropriately adjusting the height of each element, it is possible to improve the filtration efficiency while maintaining the service life, The manufacture of the element assembly can be facilitated. Therefore, the performance can be controlled not only by the type of the element (the density of the eyes) but also by the length of the element to be selected, and the adjustment to obtain the desired performance can be easily performed. .
[0026]
Next, a third embodiment according to the present invention will be described.
As shown in FIG. 10, the element assembly according to the present embodiment includes three cylindrical members 2 each having a height d, a first element 18, a second element 19, and a third element 20. It is mainly composed of The first element 18, the second element 19, and the third element 20 have different performances (life and filtration efficiency) from each other, and cover the side surface of each cylindrical member 2 and have respective heights (longitudinal length of the cylindrical member 2). Each height with respect to the direction) is a dimension d.
[0027]
A substantially annular upper plate member 21 and lower plate member 22 are formed on the upper and lower surfaces of the first element 18, and a relief valve spring 10 and a valve body 11 having a relief valve spring 10 and a valve body 11 are formed substantially in the center of the upper plate member 21. The valve 9 is provided, and upper and lower plates 25 and 26 are formed on the upper and lower surfaces of the third element 20. An opening 26a is formed at a substantially center of the lower plate 26. Is formed.
[0028]
A substantially annular upper plate member 23 and lower plate member 24 are also formed on the upper and lower surfaces of the second element located between the first element 18 and the third element 20, and the first to third elements are stacked. When adhered in this state, the inside of each cylindrical upper member 2 is in a state of communicating vertically. That is, the element assembly 1 "according to the present embodiment is provided with three elements having different performances (more specifically, having different eyes) in parallel. 1 "is stored in the cup-shaped case 12 described in the first embodiment to constitute an oil filter, and filters oil.
[0029]
In the present embodiment, three elements (first to third elements) having different performances are provided. However, it is necessary that four or more elements (of course, each have different performances). ) May be added. Further, the height of each of the plurality of elements may be arbitrarily set to obtain an oil filter having desired performance as a whole.
[0030]
Although the first to third embodiments have been described above, the present invention is not limited to these. For example, the shape of the cylindrical member, the shape and material of the element, and the form of the case 12 to accommodate the element assembly ( The outer shape of the case, the arrangement and number of the inflow holes 14a, the shape of the check valve 15, the form of the relief valve, and the like can be appropriately determined.
[0031]
Next, more specific examples of the present invention will be described. Of course, the present invention is not limited to these embodiments, and can be arbitrarily changed and added.
(Example)
A relatively coarse element A made of filter paper having a filtration accuracy of about 20 μm and a relatively dense element B made of filter paper having a filtration accuracy of about 10 μm are combined in the height direction of the entire oil filter (the longitudinal direction of the oil filter). The oil filter C1 according to the example was obtained by accommodating them in a cup-shaped case while arranging them in equal parts (each having a height of 50%). In addition, an oil filter C2 according to an example was obtained in which the height of the element A was 60% of the whole and the height of the element B was 40% of the whole.
[0032]
Then, when an experiment was conducted on each transition of the pressure loss and the filtration efficiency with respect to the use time of the oil filters C1 and C2, the tendency as shown in FIG. 11 was shown. According to the drawing, the oil filters C1 and C2 according to the present embodiment are single coarse elements (elements made of the same filter paper as the element A, and the heights thereof are equal to those of the elements A and B). And an oil filter Ca as a comparative example having the same size as that of the element B, and a single dense element (an element made of filter paper of the same eye as the element B, Of pressure loss with respect to each use time in an oil filter Cb as a comparative example having the same size as the sum of the dimensions of the elements A and B (the tendency indicated by the broken line with a black circle in the figure) ) And a change in the filtration efficiency (a tendency indicated by a broken line with a white circle in the figure).
[0033]
In the figure, if the pressure loss is large for the same use time, the life is short. Therefore, the one with the shortest life is the oil filter Cb, and the one with the lowest filtration efficiency is the oil filter Ca. On the other hand, it can be seen that all of the examples have a longer life than the oil filter Cb and a higher filtration efficiency than the oil filter Ca.
[0034]
That is, according to the oil filters C1 and C2 according to the embodiment, it is possible to improve the filtration efficiency without significantly shortening the service life, and to provide elements having different performances (coarse and dense eyes) at an appropriate height. By setting, the delicate performance (lifetime and filtration efficiency) of the entire oil filter can be adjusted. Therefore, the manufacturing cost can be reduced as compared with the case where a plurality of types of oil filters each including a single element are manufactured.
[0035]
Further, the filter oil is made of filter paper having a filtration accuracy of about 15 μm, and the element C having a slightly finer mesh than the element A (coarse than the element B, of course) and the element B having a finer mesh as described above are combined with the entire oil filter. The oil filter D1 according to the example was obtained by housing in a cup-shaped case while arranging it equally (50% each) with respect to the height of the filter. In addition, an oil filter D2 according to an example was obtained in which the height of the element B was 40% of the whole while the height of the element C was 60% of the whole.
[0036]
Then, similarly to the above, an experiment was conducted on each transition of the pressure loss and the filtration efficiency with respect to the use time of the oil filters D1 and D2, and a tendency as shown in FIG. 12 was shown. According to the figure, in the oil filters D1 and D2 according to the present embodiment, the change of the pressure loss with respect to the use time in the oil filters Ca and Cb having a single element (the tendency indicated by the broken line with a black circle in the figure). And a change in filtration efficiency (a tendency indicated by a broken line with a white circle in the same drawing), it can be seen that the tendency is different, and also compared with the oil filters C1 and C2 according to the previous embodiment (see FIG. 11). It can be seen that they show different tendencies.
[0037]
That is, in addition to the adjustment of the height dimension of each element in the element assembly, the performance (life and filtration efficiency) of the entire oil filter is set variously by adjusting the performance (close and dense eyes) of each element. Delicate adjustment can be further facilitated. Further, in any of the embodiments (C1, C2, D1 and D2), a desired filtration efficiency can be achieved while maintaining the life to some extent as compared with the one having a single element. An oil filter suitable for oil can be provided.
[0038]
【The invention's effect】
According to the first aspect of the present invention, since a plurality of elements having different performances are provided side by side in the longitudinal direction of the cylindrical member, a plurality of elements of a combination which should have a desired life and filtration efficiency as the whole oil filter are provided. It is possible to selectively install the filter, improve the filtration efficiency while maintaining the life, and easily manufacture an assembly of a plurality of types of oil filters having various performances.
[0039]
According to the second aspect of the present invention, the length of each of the plurality of elements in the longitudinal direction of the cylindrical member is arbitrarily adjusted to cover the entire side surface of the cylindrical member as a whole. The performance can be controlled not only by the type (the density of the eyes) but also by the length of the element to be selected.
[0040]
According to the third aspect of the present invention, since the element is composed of the first element and the second element provided side by side in the longitudinal direction of the cylindrical member, it is easy to select an element satisfying the desired performance, The configuration of the element assembly in the oil filter can be simplified.
[Brief description of the drawings]
FIG. 1 is a partially sectional perspective view showing an element assembly of an oil filter according to a first embodiment of the present invention. FIG. 2 is a view seen from the same side, and a left half is a sectional view. FIG. 3 is a partially sectional perspective view showing a first element in an oil filter element assembly according to the first embodiment of the present invention. FIG. 4 is a view seen from the same side. FIG. 5 is a partially sectional perspective view showing a second element of the oil filter element assembly according to the first embodiment of the present invention. FIG. 7 is a view from the same side, in which a left half is a cross-sectional view and a right half is a side view. FIG. 7 is a perspective view showing an element assembly according to the first embodiment of the present invention. FIG. 8 is a partially sectional perspective view showing a configured state. FIG. , The left half is a cross-sectional view, and the right half is a side view. FIG. 9 is a side view of an element assembly of an oil filter according to a second embodiment of the present invention, showing the element assembly. 10 is a cross-sectional view of the left half and a side view of the right half. FIG. 10 is a side view of the element assembly of the oil filter according to the third embodiment of the present invention, showing the element assembly. Then, the left half is a cross-sectional view, and the right half is a side view. [FIG. 11] A graph showing a performance comparison between the oil filters (C1 and C2) according to the present embodiment and the oil filters (Ca and Cb) as comparative examples [ FIG. 12 is a graph showing a performance comparison between the oil filters (D1 and D2) according to the present embodiment and the oil filters (Ca and Cb) as comparative examples.
1, 1 ', 1 "... Element assembly 2 ... Cylindrical member 3 ... First element 4 ... Second element 5 ... Upper plate 6 ... Lower plate 7 ... Upper plate 8 ... Lower plate 9 ... Relief valve 10 ... Relief Valve spring 11 ... Valve element 12 ... Case 13 ... Set spring 14 ... Cover plate 15 ... Check valve 16 ... Seal rubber 17 ... Flange plate 18 ... First element 19 ... Second element 20 ... Third element 21 ... Upper plate 22 ... lower plate 23 ... upper plate 24 ... lower plate 25 ... upper plate 26 ... lower plate

Claims (3)

A cylindrical member having a plurality of holes formed on its side,
An element provided to cover the side surface of the cylindrical member, for filtering oil,
And an oil filter element assembly that is housed in a cup-shaped case, and allows the oil introduced into the case to reach the inside of the cylindrical member through the element.
An element assembly for an oil filter, wherein a plurality of elements having different performances are provided side by side in the longitudinal direction of the cylindrical member. 2. The element according to claim 1, wherein each of the plurality of elements has an arbitrary length adjusted in a longitudinal direction of the cylindrical member so as to cover the entire side surface of the cylindrical member as a whole. 3. Oil filter element assembly. 3. The oil filter element assembly according to claim 1, wherein the element comprises a first element and a second element provided side by side in the longitudinal direction of the cylindrical member. 4.

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