JP3011336U - Oil filter with elastically supported valve structure - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide an oil filter capable of preventing a shortage of circulating oil that occurs during acceleration operation and the like, and performing smooth and favorable filtration. The oil filter of the present invention comprises a guide protrusion provided on the bottom surface of the canister container 1 and a filter net 10 on the guide protrusion.
A cylinder 3 which is connected to the bottom of the canister container in a form that allows oil to pass therethrough and has an adjusting port 32 on its upper side surface; a paper-wrap type filter 7 on a filter mesh; and a screen mesh 9 thereon.
A fixed plug 6 that is connected to the upper end of the cylinder and has an oil passage inside, a spring 4 that can expand and contract in the internal space of the cylinder, and an oil passage inside that is pressed against the fixed plug by the elastic force of the spring. The valve 5 has an upper surface, and the engaging portion between the upper surface of the valve and the fixed plug is exposed to the outside of the cylinder through the adjustment port.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an oil filter used in an internal combustion engine in which engine oil is used in vehicles, heavy machinery, ships, generators, etc., and in particular, lack of circulating oil that occurs during accelerated operation, long-term operation or winter operation. The present invention relates to an oil filter that can prevent

[0002]

[Prior art]

 In a conventional oil filter, as shown in FIG. 9, a lid 104 is coupled to a filter body (cylindrical canister) 101 having a “U” -shaped cross section. The lid 104 is provided with an outflow port 102 and an inflow port 103.

Inside the filter body 101, a filter 105 bent in a zigzag shape so as to have a “W” -shaped cross section is housed in a “L” -shaped fixed plate 106. A hole 108 is formed in the center of the lower fixing plate 107.

The hole 108 is closed by a valve 110 that is pressed downward by a spring 109. If the engine is stopped, the oil in the oil filter will flow out of the filter through the inflow port 103. Then, when the engine is started, the oil is not supplied to the engine until the oil circulates, which may make the engine unreasonable.

Therefore, in order to prevent this, the oil inlet 103 is provided with a check valve 111 made of a rubber plate for preventing backflow. However, since the operation of the check valve 111 made of such a rubber plate is not accurate, the desired effect cannot be expected.

[0006]

In the conventional oil filter, the oil supply amount should be rapidly increased during the acceleration operation which requires a large amount of engine oil supply or during the winter season. Since the valve 110 energized by 9 does not operate smoothly, the valve 110, which normally closes the hole 108 drilled in the center of the lower fixing plate 107, operates reliably during acceleration or during winter operation. I can't do it.

Further, when the oil circulates continuously, the viscosity decreases due to the increase of the oil temperature, and at the same time, the function of the oil decreases and the engine wears.

Further, since the oil passes through the side surface in the state where the filter 105 is folded in a zigzag pattern, it passes through only one sheet of filter paper. In this case, it is impossible to remove fine particles, so that it does not fulfill the function of filtering oil. In addition, the water contained in the oil cannot be removed. Therefore, there was a problem that all the oil had to be changed within a certain period.

An object of the present invention is to provide an oil filter that can smoothly and satisfactorily perform filtration even during accelerated operation of an engine or the like.

[0010]

[Means for Solving the Problems]

 The oil filter of the present invention is connected to a canister container, a guide protrusion provided on the bottom surface of the canister container, a filter mesh supported on the guide protrusion, and a bottom surface of the canister container in an oil-passable manner. A cylinder having an adjusting port on the upper side surface, a paper-wrap type filter wound on a mandrel and arranged at a position where the adjusting port is completely exposed on the filter mesh and on the outer periphery of the cylinder. An upper screen mesh, a fixed plug that is connected to the upper end of the cylinder and has an oil passage inside, and one end that is fixed to the bottom of the canister container so that it can be expanded and contracted in the internal space of the cylinder. The spring and the inside of the cylinder are arranged close to the inner peripheral surface of the cylinder, and have an oil passage inside. And a valve having a top surface which is pressed against the fixed plug, the engaging portion and the fixed plug and the upper surface of the valves is out dew cylinder outside through the adjusting port.

[0011]

[Action]

 The adjusting port provided on the side surface of the cylinder normally supplies oil to the engaging portion where the valve is in close contact with the fixed plug by the elastic force of the spring. For example, when a large amount of oil is supplied due to the acceleration operation of the engine and the pressure of the oil rises, the spring is compressed and the valve lowers, so the adjustment port opens.

[0012]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an oil filter according to an embodiment of the present invention, and FIG. 2 is a sectional view of an assembled state.

As shown in FIG. 1, in the configuration of this embodiment, a guide protrusion 12 (FIG. 7) is formed on the bottom surface of the filter body 1 of the cylindrical canister. The filter screen 10 is arranged above the guide protrusions 12.

At the center of the bottom surface of the filter body 1, a cylindrical fastening portion 13 (FIG. 7) having a thread groove on the outer peripheral surface is provided. A thread groove is also cut on the inner peripheral surface of the lower portion of the adjusting cylinder 3, and is joined to the screw of the fastening portion 13. Inside the cylinder 3, a valve 5 elastically supported by a spring 4 and biased upward is arranged in proximity to the inner peripheral surface of the cylinder 3.

The valve 5 is biased to be located above the cylinder 3. The cylinder 3 has a plurality of adjustment ports 32 in the upper part thereof along the circumferential direction. The filter 7 wound around the mandrel 72 is inserted to the position where the adjustment port 32 is completely exposed on the outer peripheral surface of the cylinder 3.

The upper end of the filter body 1 is connected to the cylindrical lid 2. On the upper part of the lid 2, the annular packing 8 is attached to the upper connecting protrusion 25. A screen net 9 is supported inside the lid 2. The fixed plug 6 is inserted into the outlet 23 (FIG. 6) of the lid 2.

The threaded coupling portion 61 of the fixed plug 6 is screwed to the threaded groove coupling portion 35 formed on the inner surface of the cylinder 3. The fixing plug 6 pressurizes the lid 2 by its flange 62 to fix it.

At this time, as shown in FIG. 7, the guide protrusions 12 protruding from the bottom surface of the filter body 1 are aligned with the openings 14 opened between the fastening portions 13 in an accurate arrangement. Since it is arranged, the oil filtered by the filter 7 can flow out from the outlet port 23 (FIG. 6) of the lid 2 with a light load. The heat dissipation plate 11 on the outer surface is for cooling the hot oil.

The upper part of the filter body 1 has an inclined surface 15 for making close contact with the lid 2. The inclined surface 15 is for strengthening the coupling force between the filter body 1 and the lid 2. Further, a heat dissipation plate 11 is formed on the outer surface of the lid 2 that is connected to the filter body 1 for the same purpose as the filter body 1. As shown in FIG. 1, a coupling projection 25 is provided on the upper surface of the lid 2, and the packing 8 is inserted therein. The packing 8 is accurately joined by the groove 81 shown in FIG. Since the partition walls 26 are provided on both sides of the coupling protrusion 25, the packing 8 does not come off even if the packing 8 is pressurized.

As shown in FIG. 6, the inside of the lid 2 is divided by partition plates 21 provided at regular intervals. A recess 22 is formed in the lower edge of the partition plate 21 (the lid 2 is shown in an inverted state in FIG. 6), and the projection of the screen net 9 is inserted into the recess 22.

Further, as shown in FIG. 4, the cylinder 3 has an inner screw fastening portion 34 at the lower portion. The fastening portion 34 is joined to the fastening portion 13 of the external screw provided on the bottom portion of the filter body 1. A guide protrusion plate 31 is formed at the lower end of the cylinder 3 to spread downward.

The guide protrusion plate 31 prevents the filter 7 from being pressed downward when the filter 7 is inserted into the cylinder 3, secures a space below the filter 7 and passes the filter 7 from top to bottom. It can smooth the oil flow as the filtered oil circulates.

The adjustment port 32 formed on the upper stage of the cylinder 3 is formed so that the adjustment port 32 is completely exposed when the filter 7 is mounted on the cylinder 3. The upper surface of the adjusting port 32 forms an inclined surface 33 that inclines toward the outer surface of the cylinder 3. On the inner peripheral surface of the upper portion of the cylinder 3, there is formed a connecting portion 35 to which the connecting portion 61 (FIG. 5) of the fixed plug 6 can be screwed.

Further, the spring 4 passes through the inside of the cylinder 3 and elastically supports the inner step portion 54 (FIG. 3) at the lower end of the valve 5. As shown in FIG. 3, the valve 5 has a spiral groove 52 having an appropriate depth on the outer peripheral surface. In the upper portion of the valve 5 where the spiral groove 52 starts, a shoulder portion 51 that can receive pressure when oil pressure is applied is formed. Since the inclined portion 53 of the valve 5 is a portion that abuts against the tip of the fixed plug 6, the inclined portion 53 is formed so as to incline outward and downward, and smoothes the fluid flow.

Also, as shown in FIG. 5, an inclined surface 64 is formed at the tip of the connecting portion 61 of the fixed plug 6 shown in FIG. Make it smooth.

A flange 62 is formed on the upper portion of the fixed plug 6 so that the lid 2 can be pressed. The upper surface of the flange 62 is provided with a plurality of slots 63 for engaging with a jig so that the lid 2 can be opened and closed.

Further, in FIG. 1, the filter 7 inserted into the cylinder 3 is formed by winding a moisture resistant paper that does not deform even if it absorbs moisture. The oil passage between the outer peripheral surface of the cylinder 3 and the inner peripheral surface of the filter body 1 is filled with a filter 7. The oil flows parallel to the surface of the paper wrapper of the filter 7 and is filtered by coming into contact with the surface of the paper wrapper. The number of windings of the wrapping paper may be adjusted according to the operating hydraulic pressure.

For example, the number of turns is increased for trucks with high oil pressure, and the number of turns is reduced for passenger cars with low oil pressure. In order to form the wrapping paper filter 7, it is preferable to use a mandrel 72 which has an appropriate thickness and does not deform even when exposed to moisture.

According to the present embodiment configured as described above, the following actions and effects can be obtained. Lubricating oil is circulated by an oil pump in a lubricating oil storage tank, passes through the drive system of the engine engine, and the lubricating oil before filtration is discharged from the inlet 24 at the top of the oil filter lid 2 in the state of the lubricating oil. Inflow.

Then, the primary circulation oil becomes a spiral state generated by a sudden direction change, etc., and bubbles are generated, resulting in a very irregular oil flow. The irregular flow raises the pressure, but this high pressure is mitigated by the six diaphragms 21 (FIG. 6) of the lid 2. Impurities such as primary solids are filtered through a screen screen 9. Then, it is pressed into the filter 7.

Here, by using the wrapping paper filter 7 made of a filter paper that is completely different from the existing filter paper, it is possible to filter ultrafine particles of about 0.01 μm. In the normal state shown in FIG. 2, the valve 5 is pressed against the fixed plug 6 from below by the elastic force of the spring 4, and the oil passage through the adjustment port 32 is blocked. pass.

It is also possible to substantially remove water, carbon, iron and rubber components mixed in the oil. In such a case, the oil viscosity can be regained and a complete filtration state can be obtained. .

At this time, since the oil passes through the filter 7 made of wrapping paper, the filtration area becomes significantly larger than that of the conventional one in which the oil passes through one filter paper, which is preferable. Filtration is possible. All the particles can be filtered by the screen net 9 and the filter net 10, and good filtration is possible.

As shown in FIG. 8, when the engine is accelerated during operation, the amount of oil circulation increases rapidly, so that the load on the filter 7 causes hydraulic pressure to be applied to the adjustment port 32 of the cylinder 3 and Pressure is applied to the shoulder portion 51 of No. 5.

Then, the valve 5 is lowered against the elastic force of the spring 4, and the opening at the lower end of the fixed plug 6 is exposed as shown in FIG. When the lower end of the fixed plug 6 is opened away from the valve 5, a large amount of oil that has not passed through the filter 7 is injected into the oil passage in the fixed plug 6 together with the filtered oil.

When oil containing particles or the like flows into the cylinder 3 through the adjustment port 32, particles or the like are clogged in the gap between the cylinder 3 and the valve 5 to prevent the valve from not descending smoothly. A spiral groove 52 is formed on the outer surface of the valve 5 so that particles and the like can move along the spiral groove 52. Therefore, the oil filter can realize accurate operation of the valve 5 even if the oil contains particles and the like.

Therefore, even if the oil pressure and the return elastic force of the spring 4 are the same, the lowering operation of the valve 5 of the present invention is more accurate, quicker and sharper than the operation of the conventional valve. Done. At this time, the direction of the oil flowing through the valve 5 is immediately reversed, and the valve 5 is accurately lowered to create a space.

The oil is quickly introduced into the fixed plug 6 through the generated space. The oil is mixed with the lubricating oil filtered by the filtering section. As a result, the pressure difference becomes constant, and the correct amount of oil flows into the rotating section at the same flow rate.

Since the oil flows out from the space created by the valve 5 descending accurately and quickly, the hydraulic pressure applied to the shoulder portion 51 of the valve 5 drops rapidly. When the valve 5 rises due to the restoring elastic force of the spring 4, the valve returns to its original position.

Therefore, this embodiment is an oil filter which can greatly prevent a failure or an accident due to insufficient supply of lubricating oil when the engine is operating at high speed. Further, since it is designed so that the fine solid matter mixed with the lubricating oil before filtration can be moved in the spiral groove 52, the fine solid matter is sandwiched in the gap between the cylinder 3 and the valve 5, and the valve 5 Does not interfere with the operation of. It is possible to completely solve the scandals caused by valve stoppage during high-speed operation and operation under extreme conditions (low temperature, dryness).

Although the present invention has been described with reference to the embodiments, the present invention is not limited to these. For example, it will be apparent to those skilled in the art that various modifications, improvements, combinations, and the like can be made.

[0042]

[Effect of device]

 As described above, according to the present invention, the adjustment port provided on the side surface of the cylinder is closed or opened depending on the pressure of the oil, so that the direction in which the oil flows suddenly changes during the acceleration operation of the engine. Even in such cases, smooth and stable filtration can be performed, and it is possible to prevent insufficient oil circulation.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a combined state of this embodiment.

FIG. 3 is an enlarged sectional view of a valve.

FIG. 4 is an enlarged sectional view of a cylinder.

FIG. 5 is an enlarged sectional view of a fixed plug.

FIG. 6 is an incised perspective view in which one surface of the lid is incised.

FIG. 7 is an incised perspective view in which one surface of the filter body is incised.

FIG. 8 is a cross-sectional view showing a state where the valve is operated.

FIG. 9 is a sectional view showing a configuration of a conventional oil filter.

[Explanation of symbols]

 1 Filter Main Body 2 Lid 3 Cylinder 4 Spring 5 Valve 6 Fixed Plug 7 Filter 8 Packing 9 Screen Net 10 Filter Net 11 Heat Dissipation Plate 12 Guide Protrusion 13 Fastening Part 14 Opening 21 Septum 22 Recess 23 Outlet 24 Inlet 25 Connection Projection part 26 Partition wall 31 Guide projecting plate 32 Adjusting port 33 Sloping surface 34 Fastening part 35 Coupling part 51 Shoulder part 52 Helical groove 53 Inclined part 54 Step part 61 Coupling part 62 Flange 63 Slot 64 Slope surface 71 Element 72 Mandrel 73 Cover paper 81 Concave Groove 82 Inclined surface 83 Joined surface 91 Inclined surface

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F01M 1/16 F 7718-3G E 7718-3G 1/20 Z 7718-3G

Claims (5)

[Scope of utility model registration request] 1. A canister container (1) and a guide protrusion (1) provided on the bottom surface of the canister container.
2), a filter mesh (10) supported on the guide protrusions, a cylinder (3) connected to the bottom surface of the canister container in a form that allows oil to pass therethrough, and having an adjustment port (32) on an upper side surface thereof. The mandrel (7) is arranged on the filter net and on the outer periphery of the cylinder at a position where the adjusting port is completely exposed.
A wrapping paper type filter (7) wound around 2), and a screen net (9) provided on the filter.
A fixed plug (6) connected to the upper end of the cylinder and having an oil passage therein, and a spring (4) having one end fixed to the bottom surface of the canister container and capable of expanding and contracting in the internal space of the cylinder, A valve (5) that is disposed in the cylinder and close to the inner peripheral surface thereof, has an oil passage therein, and has an upper surface that is pressed against the fixed plug by the elastic force of the spring; An oil filter in which an engaging portion between the upper surface of the valve and the fixed plug is exposed to the outside of the cylinder through the adjustment port. 2. A lid (2) fixed on the canister container and having an outlet (23), and a packing (8) inserted into the upper portion of the lid,
The oil filter according to claim 1, wherein the fixed plug is inserted into the outflow port, the fixed plug has a flange (62), and the lid is pressed and fixed by the flange. 3. The oil filter according to claim 1, wherein the filter is a moisture-resistant mandrel wound with moisture-proof paper a predetermined number of times. 4. The oil filter according to claim 1, wherein the valve has a shoulder portion (51) for receiving oil pressure on an upper surface and a spiral groove (52) on an outer peripheral surface. 5. The oil filter according to claim 1, wherein the canister container has a radiation fin on the outer peripheral surface.