JPH027682B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an oil filter device provided to an engine of a vehicle or the like.

(Prior art) Conventional oil filters, as proposed in Utility Model Publication No. 59-31294, are of a cartridge type consisting of a case with an oil filter element inside the base, and the oil filter cartridge is attached to the mounting seat of the base. The cartridge was connected to the base by passing a long center bolt from the center of the cartridge case lid to the base, and the drain bolt, set spring, etc. were assembled to the case together with the element. .

(Problems to be Solved by the Invention) In the above-mentioned conventional technology, since a long cartridge is supported by a long center bolt, there is a risk that the sealing surface may be bent when sealing the joint surface of the cartridge with the base of the case. There is still room for improvement in terms of ensuring long-term sealing performance.Secondly, since the center bolt runs vertically through the internal element, it is difficult to install a relief valve in case of element clogging.Furthermore, the case and It is uneconomical to replace the entire drain structure etc. with a cartridge every time an element is replaced, or cartridge cases are often made of aluminum alloy, while the center bolt is made of steel, so there is a problem between the long bolt and the long cover. There are problems such as the possibility that cracks may occur due to the difference in thermal expansion.

In addition to the above, a model that eliminates the center bolt as in Utility Model Publication No. 59-36650 has been proposed, but the oil filter is still a cartridge type and has the same problems as above, and the cartridge has a screw hole in the center of the bottom plate. Since it is only screwed into the threaded part on the base side, there remains a problem in terms of support for mounting long cartridges.

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide excellent sealing performance and strong and reliable mounting support. It is an object of the present invention to provide an oil filter device that is advantageous in terms of cost.

(Means for solving the problem) A means for solving the above problem is to form an integral cylindrical shape with the oil filter case as a base,
An oil filter element is fitted into the case, and the lower opening end of the cylindrical case is closed by a lid so as to be openable and closable.

(Effects of the above means) According to the above means, since the lid body seals with the highly rigid open end that is integrated with the base as the sealing surface, no moment is applied to the sealing part.
Furthermore, since the lid body is attached to the case integral with the boss, the mounting support is strong and reliable.

(Embodiment) Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is a longitudinal sectional view of the oil filter, and Figure 2 is a side view schematically showing the overall shape of the engine.
For example, this is a horizontally mounted FF engine, and an oil pan 3 is provided below the main body 2. In the figure, a drive pulley 4 that is connected to a crankshaft and rotates is provided above the oil pan 3 on the side. Drives the air conditioner compressor, power steering oil pump, and other auxiliary equipment. An oil filter 6 is provided at the rear side of the oil pan 3 at the lower part of the main body of the engine 1 described above.

The details of the oil filter 6 are as shown in FIG. 1, and the embodiment includes an oil cooler. The oil filter case 7 consists of an upper boss portion 701 and a filter case 702 hanging down from the lower surface of the boss portion 701, and these 701 and 702 are integrally formed of, for example, an aluminum alloy. The case 702 has a cylindrical shape, has a predetermined length and diameter, hangs down from the boss portion, and is opened 703 downward. case 7
A main oil passage 705 is vertically installed in the center of the ceiling 704, which is the inner top surface of the interior, and the lower end of the main oil passage 705 hangs down in a cylindrical shape 706. A portion 707 is formed. An annular groove 709 is recessed in the upper surface 708 of the boss part 701 so as to surround the main oil passage 705 described above, and the groove 709 forms a return oil passage, and is integrally provided so as to stand up on one side of the boss part 701. A portion of the groove 709 communicates with an outlet oil passage 711 provided horizontally at the bottom of the mounting flange portion 710 .

A cylindrical filter element 8 is fitted in a cylindrical hanging case 702, and the element 8 consists of an element body 801 and upper and lower supporting frames 802 and 803 formed of plate materials. A ring-shaped seal member 9 is engaged with the locking piece 804 of the section, and the seal member 9 is elastically deformed and fitted into the cylindrical hanging part 706, and the seal member 9 is regulated upwardly by the stepped part 707. . On the other hand, the bottom open portion 703 of the case 702 is closed with the lid 10, the lid 10 has a concave dish shape, and the mating surface 101 on the periphery is butted against the mating surface 712 around the open portion 703 to extend outward. The protruding boss portions 713 and 102 are connected with bolts 11, and a plurality of such connecting portions are arranged radially, and in the embodiment, the lid body 10
An annular groove 103 was provided on the mating surface 101, and an O-ring 12 for sealing was inserted therein. A plurality of regulating protrusions 105 are provided radially on the inner bottom 104 of the lid body 10, a plurality of seats 106 are provided between the protrusions, and a coil spring 1 is mounted on the protrusions 105 on the outer side of the seats 106.
Place and engage the lower part 131 of No. 3. Then, the upper part 132 of the spring 13 is fitted into a recess 805 provided in the center of the lower support frame 803, thereby compressing the element 8 upwardly and regulating the radial direction. A relief valve 14 at the time of element clogging is provided in the center of the recess 805, and the valve 14 is connected to the guide sleeve 141 raised above the recess 805 and the recess 805.
It consists of a valve body 144 that slidably closes a central opening 142 by biasing it with a spring 143. If the element 8 becomes clogged and the oil pressure exceeds a specified value, the valve body 144 of the valve 14 is raised from below the element 8 against the spring 143 to perform a relief action. By the way, the ceiling 70 of case 702
4 is concave upward, and this portion 714 is communicated with an oil inlet passage (not shown).
Dirty oil is introduced into the outer case 702.

As described above, the base 701 and the case 702, which corresponds to the case of a conventional cartridge, are integrally molded, the element 8 is fitted into the case 702 from below, and the lower end open surface of the case 702 is sealed and closed with the lid body 10. Unlike connecting a long cartridge to the base with a long center bolt while sealing it at the upper end, the seal can be reliably maintained over a long period of time without applying force such as a moment to the sealing part. , base and case are integrated,
Since the oil filter is closed and held by the lid, the overall rigidity and strength of the oil filter can be maintained high, making it extremely resistant to shocks, etc., and since the center bolt for mounting does not pass through the center, a relief valve can be installed in case the element becomes clogged. Since only the elements need to be replaced, there are advantages such as being advantageous in terms of cost.

Although not shown in FIG. 1, the case 70
2 Attach a drain bolt 2 to a part of the lower peripheral wall as shown in Figure 2.
5 are screwed together, and the cost is further reduced by not attaching any structure, including a drain structure, to the case to be disposed of, as in the case of a cartridge type.

In this embodiment, the oil cooler 15 is arranged on the above base 701. To explain this in detail, the oil cooler 15 consists of a circular sealed box-like case 151 and a Kongming disc-shaped case 151 housed inside the case 151, which are stacked one above the other for heat exchange. It consists of element 152. The upper piece 153 and lower piece 154 of the case 151 have mounting holes 155 and 15, respectively.
6 is provided, a washer 16 is provided at the lowest position, mounting holes 155 and 156 are provided on this through a spacer 17, and a center bolt 18 is inserted from above into the mounting hole 157 provided in the center of the element 152 and screwed onto the base 701. do. A female thread 715 is provided in the upper half of the previously described oil passage 705 of the base 701, and a male thread 181 provided at the lower part of the bolt 18 is screwed into the female thread 715. And under the head 182 of the bolt 18 is a washer 1.
9 is interposed to press down the upper piece 153, an O-ring 20 is interposed between the washer 16 and the upper surface 708 of the boss portion 701, and a main communication passage 171 is provided on one side of the spacer 17.
In addition, a return communication passage 172 is provided in the other part, and this 172 is connected to the groove 70 for the return oil passage.
The upper part of the main communication passage 171 is open, and the lower piece 154 of the case 151 corresponding to this part is provided with an opening 1.
58 is provided to communicate with the inside of the oil cooler, and the other portion of the lower piece 154 is provided with an opening 159 that communicates with the return communication path 174.

The above bolt 18 has a passage 70 that opens downward.
5, the upper end 184 of the passage 183 is closed, and a main oil hole 185 that penetrates in the radial direction is provided at the middle lower part of the bolt 18, connecting the main communication passage 171 and the main oil passage 705 described above. Make a continuous connection. Relief oil holes 186, 18 are provided in the middle or upper part of the bolt 18, spaced apart in the axial direction and shifted in phase in the circumferential direction.
7,188, and a passage 183 facing the oil hole.
Inverted cap-shaped relief valve 21 inside the middle upper part
The valve 21 is slidably provided, and the valve 21 is pressed downward by a coil spring 22 interposed between the valve 21 and the upper end, and the lower limit is regulated by a pin 23 provided above the main oil hole 185 described above. As described above, the upper part of the valve 21 is the relief oil passage 189, the lower part is the main oil passage 190, and the relief valve 21 and its oil passage 189 are the main oil passage 70.
5 using a bolt 18. A C-shaped guide wall 24 in plan view is installed between the upper and lower pieces 153 and 154 of the oil cooler case 151 near the bolt 18.
...provided in between.

In the above, dirty oil is introduced into the case 702 from the introduction part 714, passes through the main body 801 in the element 8, and passes from the clean side inside the main body through the main passages 705 and 190 to the oil hole 185 and the main communication The groove 709 enters the passage 171 and flows into the oil cooler 15 from the opening 158, is cooled by heat exchange in the heat exchange element 152, and forms a return oil passage via the opening 159 on the opposite side, the return communication passage 172, and the opening 161. into the outlet oil passage 71
0 to the oil pan etc.

On the other hand, the oil pressure inside the element 8 and therefore the main oil passage 7
05, 190 rises above the specified level, the relief valve 21 is raised against the spring 22, and the lowest relief oil hole 18, which had been closed, is first closed.
6 is opened, oil leaks from the oil hole 186, flows inside the guide tube 24, is guided by this, flows to the opposite side, is discharged from the return oil line, and when the pressure increases further, the valve 21 closes. further rises,
Oil holes 187 and 188 are sequentially opened to perform a relief action.

In the above embodiments, a type equipped with an oil cooler has been shown, but a type not equipped with this can also be used.

(Effects of the Invention) As is clear from the above, according to the present invention, it is possible to obtain an oil filter that has excellent sealing performance, can stably maintain sealing performance over a long period of time, and has excellent rigidity and strength. It is also strong and advantageous in terms of cost, and since there is no center bolt in the type equipped with an oil cooler, there are many advantages such as simplifying the installation of the relief valve due to the passage configuration.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view of an oil filter device, and FIG. 2 is a side view of an engine. In the figure, 701 is a base, 702 is a case, 8 is an oil filter element, and 10 is a lid.

Claims (1)

[Claims] 1. An oil filter case is integrally formed into a cylindrical shape with a base, an oil filter element is fitted into the case, and the lower opening end of the cylindrical case is closed by a lid so that it can be opened and closed. Oil filter device.