JPS6295111A - oil filter device - Google Patents

Abstract

PURPOSE:To obtain the title device having an excellent sealing property, which is fixed and supported firmly and surely and which is advantageous from the standpoint of its cost by closing the lower opening end of a cylindrical filter case which is integrally formed with a base and wherein a filter element is inserted with a lid body which can be freely opened and closed. CONSTITUTION:The base 701 and the filter case 702 equivalent to the case of the conventional cartridge are integrally formed, the oil filter element 8 is inserted into the case 702 from the lower part, and the lower opened surface of the case 702 is tightly closed by the lid body 10. Consequently, the device can be surely sealed for a long time, high rigidity and strength of the whole oil filter can be maintained, and the resistance to impact, etc., are also enhanced, moreover, a relief valve 14 to be used when the element is clogged can be furnished, only the element 8 is exchanged, and hence the device is advantageous from the standpoint of cost.

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 are of a cartridge type, consisting of a case with an oil filter element inside the base, as proposed in Utility Model Publication No. 59-31294.
The oil filter cartridge was attached to the base with the oil filter cartridge facing the mounting surface of the base, and a long center bolt was passed from the center of the cartridge's case lid to the base.The case was equipped with a drain port, set spring, etc. It is assembled together with the element.

(Problems to be Solved by the Invention) In the above-described 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. However, there is room for improvement in terms of ensuring long-term sealing performance.Firstly, since the center bolt runs vertically through the internal element, it is difficult to provide a relief valve in case the element becomes clogged. Furthermore, it is uneconomical to replace the case and drain structure in a cartridge type every time an element is replaced, or cartridge cases are often made of aluminum alloy, while the center bolt is made of steel, so it requires a long bolt and a long cover. There are problems such as the possibility that cracks may occur due to the difference in thermal expansion between the two.

In addition to the above, a model that eliminates the center bolt as in Utility Model Publication No. 59-38850 has been proposed, but the oil filter is still a cartridge type and has the same problems as above, and the cartridge does not have a screw hole in the center of the bottom plate. Since it is simply screwed into the threaded part on the base side, there remains a problem in terms of mounting support for long cartridges.

The present invention has been made to solve the above problems, and its purpose is to provide an oil filter that has excellent sealing properties, has strong and reliable mounting support, and is advantageous in terms of cost. We are here to provide you with the equipment.

(Means for solving the problem) A means for solving the above problem is to form an oil filter case integrally into a cylindrical base, fit an oil filter element into the case, and The lower opening end of the shaped case is closed by a lid so that it can be opened and closed.

(Effect 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, and the lid body is integrated with the boss. Since it is attached to the case, 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.The engine (1) is, for example, a horizontal FF engine, and the oil pan (3) is located under the main body (2).
), and in the figure, there is an oil pan (3) on the side, and a drive pulley (4) connected to the crankshaft and rotating above it.
is provided at the lower side of the oil pan (3) at the bottom of the main body of the engine (1) that drives the air conditioner compressor, power steering oil pump, and other auxiliary equipment via the belt (5). An oil filter (6) is provided.

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 part (701) and a filter case (702) hanging down from the lower surface of the boss part (701).
01) and (702) are integrally molded from, for example, an aluminum alloy. The case (702) has a cylindrical shape, has a predetermined length and diameter, hangs down from the boss part, and opens downward (
A main oil passage (705) is installed vertically in the center of the ceiling (704), which is the inner top surface of the case (702), and the lower end of the main oil passage (705) is cylindrical. Drooping (70
6) L, a large-diameter stepped portion (707) is formed at the top of the hanging portion (70B). An annular groove (709) is recessed in the upper surface (70B) of the boss part (701) so as to surround the main oil passage (705) mentioned above, and the groove (709) forms a return oil passage, and the boss part ( 701) A part of the line groove (709) communicates with an outlet oil passage (711) installed horizontally at the lower part of a mounting flange (710) that is integrally provided so as to stand up on the - side.

A cylindrical filter element (8) is fitted in a cylindrical hanging case (702), and the element (8) has an element body (801) and upper and lower support frames (8) formed of plate materials.
02) and (803), and a ring-shaped seal member (8) is attached to the locking piece (804) on the inner diameter part of the upper support frame (ao2).
The sealing member (9) is attached to the cylindrical hanging part (70B).
The sealing member (9) is elastically deformed and fitted into the stepped portion (7
07) is regulated upward. On the other hand, the bottom opening (703) of the case (702) is closed with the lid (1o), and the lid (1o) is closed.
10) has a concave plate shape, and the mating surface (101) on the periphery is butted against the mating surface (712) on the periphery of the open part (703), and the outwardly extending post parts (713) and (102) are bolted. (11
), and a plurality of such joint parts are arranged radially, and in the embodiment, an annular groove (103
), and an O-ring (12) for sealing was inserted therein.

The inner bottom (104) of the lid (lO) has a regulating protrusion (10
5) A plurality of... are provided radially, and a catch seat (10
B)... are provided, and the lower part (1
31) is placed and engaged. Then, the upper part (132) of the spring (13) is placed in a recess (
805), thereby compressing the element (8) upwardly and regulating the radial direction. In the center of the fourth part (805) is a relief valve (14) when the element is clogged.
The valve (14) is slidably closed by biasing the guide sleeve (141) raised above the recess (805) and the opening (142) in the center of the recess (805) with a panel (143). It consists of a valve body (144). If the element (8) becomes clogged and the oil pressure exceeds the specified value, the valve body (14) of the valve (14)
44) is raised against the nokune (143) to perform a relief action.

By the way, a part of the ceiling (7 (14)) of the case (702) is opened upward, and this part (714) is communicated with an oil inlet passage (not shown), and the case (7) outside the element (8) is
702) introducing dirty oil into the system.

As described above, the base (701) and the case (702), which corresponds to the case of a conventional cartridge, are integrally molded,
Since the element (8) is fitted into the case (702) from below and the lid (10) seals and closes the lower open surface of the case (702), a long cartridge can be attached to the base using the long center bolt. Unlike sealing and binding at the upper end, the seal can be maintained reliably over a long period of time without applying any force such as a moment to the sealing part, and the base and case are integrated, and the lid is closed and held. Therefore, the rigidity and strength of the entire oil filter can be maintained high, making it extremely resistant to shocks, etc. Since the center bolt for mounting does not pass through the center, a relief valve can be provided in case the element becomes clogged, and only the element needs to be replaced. It has advantages such as cost advantage.

Although not shown in FIG. 1, a drain bolt (25) is screwed onto a part of the lower peripheral wall of the case (702) as shown in FIG. Further cost advantages result from not adding such structures.

In the embodiment, an oil cooler (
15), and to explain this in detail, an oil cooler (1
5) is an upper piece (15) of a case (151) consisting of a case (151) in the shape of a circular sealed box and a heat exchange element (152) in the form of perforated disks stacked one above the other.
3) , the lower piece (150 has mounting holes (155), (
15B), a washer (16) at the bottom, and a mounting hole (155), (15B) via a spacer (17) on top of this.
, and the mounting hole (
157) from above and screw it onto the base (701). An acid threaded portion (715) is provided in the upper half of the oil passage (705) of the base (701),
This is the male screw part (181) provided at the bottom of the bolt (18).
) and screw them together.

A washer (19) is inserted under the head (1B2) of the bolt (18) to press down the upper piece (153), and between the washer (16) and the upper surface (708) of the boss (701). An O-ring (20) is interposed, a main communication path (171) is provided on the - side of the spacer (17), and a return communication path (172) defined from this is provided on the other part of the spacer (17). (172) and the opening (181) of the washer (16) on the oil passage groove (709)
On the other hand, the upper part of the main communication passage (171) is open, and the lower piece of the case (151) corresponding to this part (
154) is provided with an opening (158) 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).

(1B) is a passage (70
5), the upper end (184) of the passage (183) is closed, and a main oil hole (185) penetrating in the radial direction is provided at the middle lower part of the bolt (18). The main communication path (171) and the main oil path (705) are connected for communication.

In the middle or upper part of the bolt (18), relief oil holes (1s8), (
187).

(18B), and an inverted cap-shaped relief valve (21) is slidably provided in the middle upper part of the passage (183) facing the oil hole, and the valve (21) connects to the coil interposed between the upper end and the upper end of the passage (183). The screw (22) is pressed downward, and the main oil hole (
The upper part of the valve (21) is connected to the relief oil passage (18
9), the lower part is the main oil passage (190), and the relief valve (21) and its oil passage (189) are the main oil passage (705).
) using bolts (18). And in the part near the bolt (18) between the upper and lower pieces (153) and (154) of the oil cooler case (151), there is a C-shaped guide wall (20 is a double wall) (1
52)...provided in between.

In the above, dirty oil is introduced into the case (702) from the introduction part (714), filtered through the main body (801) in the element (8), and passed from the clean side inside the main body to the main passage (705). , (190), enters the oil hole (185) and the main communication passage (171), flows into the oil cooler (15) through the opening (158), and is cooled by heat exchange in the heat exchange element (152). The oil flows into the groove (709) forming the return oil path through the opening (159) on the opposite side, the return communication path (172), and the opening (181), and then flows back into the outlet oil path (710), such as a glass pan.

On the other hand, the oil pressure in the element (8), therefore the main oil passage (70
5) When the pressure inside (190) rises above the specified level, the relief valve (21) is raised against the spring (22), and the lowest relief oil -IL (1) which was closed first is opened.
8B), the oil leaks from the oil hole (18B), flows inside the guide wall (24), is guided by it and flows to the opposite side, is discharged from the return oil line, and the pressure increases further. When the height increases, the valve (21) further rises, and the oil hole (1)
87) 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, the sealing performance is excellent,
It is possible to obtain an oil filter that can maintain stable sealing performance over a long period of time, has excellent rigidity and strength, and is also advantageous in terms of cost as it is firmly mounted and held. Since there are no bolts, there are many advantages such as simplifying the passage configuration and relief valve installation.

[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 drawing, (ool) is the base, (702) is the case, (
8) is an oil filter element, and (10) is a lid.

Claims (1)

[Claims] The oil filter case is integrally formed into a cylindrical shape as a base.
An oil filter device characterized in that an oil filter element is fitted into the case, and a lower opening end of the cylindrical case is openably and closably closed by a lid.