JP4906541B2 - Oil strainer for engine - Google Patents

Description

  The present invention relates to an improvement in an oil strainer for an engine that filters circulating oil in an engine of a vehicle or the like.

  Generally, in an engine such as a vehicle, an oil pan is disposed below the engine body, and an oil strainer is disposed in the oil pan. And, when the oil stored in the oil pan is sucked up by the oil pump and fed to each part of the engine, the oil strainer is passed to filter out foreign matters such as dust and metal powder mixed in the oil. .

For example, in Patent Document 1, a first half having an inlet and a second half having an outlet are integrated so that a flow path is formed therein, and a filter is disposed between the two. An oil strainer is disclosed in which the inside of the flow path is partitioned by a filter, and oil that has flowed into the flow path from the inflow port is filtered by the filter in the process of flowing out from the outflow port to the outside.
JP 2002-364325 A

  By the way, during cornering traveling of the vehicle or traveling on a steep road, the oil in the oil pan may move and the oil distribution may be biased. That is, the amount of oil staying in the vicinity of the inlet of the oil strainer temporarily decreases, and as a result, there is a possibility that the oil supplied to each part of the engine is insufficient and sufficient lubrication is not performed.

  The present invention has been made in view of such a point, and the object of the present invention is in the vicinity of the inlet of the oil strainer even when the oil distribution in the oil pan is biased while the vehicle is running. It is to ensure a sufficient amount of oil staying in the tank.

  In order to achieve the above-described object, the present invention is characterized in that a tank for temporarily storing oil is provided in the oil strainer.

Specifically, the present invention provides a substantially rectangular casing second half (5) having a substantially rectangular casing first half (3) and the outlet (19a) having an inlet (13b), inside have a flow path (27), and the casing first half (3) is a casing body (18) which is formed by polymerizing together by polymerization unit so as to be positioned on the lower side, the casing body (18) A filter (7 ) that is disposed in the flow path (27) and that filters oil in the process of flowing oil flowing into the flow path (27 ) from the inflow port ( 13b) toward the outflow port (19a). The following solutions were taken for the engine oil strainer equipped with

That is, the invention of claim 1 corresponds to the tank first component (31) integrally extended on at least one side of the casing first half (3) , and the tank first component (31) . The tank second component (35) extending integrally with at least one side of the casing second half (5) and at least one side of the casing body (18) and more than the overlapping portion A tank (30) formed on the outer side in the width direction of the casing body (18 ) and having a chamber (C) inside;
The flow path (27 ) inside the casing body (18) and the chamber (C) inside the tank (30) superpose the casing first half (3) and the casing second half (5). Blocked by the integrated overlapping part,
The tank first structure (31), or between the said tank first structure which faces (31) and said tank second structure (35), said chamber (C) and the chamber (C) outside and communicating the door, and is characterized in that the chamber (C) communicating port and out of the oil flowing out entrance is formed.

According to a second aspect of the present invention, in the first aspect of the invention, the tank (30) is bent from at least one of the tank first structural body (31) and the tank second structural body (35) to the other side. Having tank side walls (31a, 35a) formed,
The communication port is characterized in that it is open between said tank side wall (31a, 35a) end face and the other tank structure opposite to that of the (31, 35).

The invention of claim 3 is the invention according to claim 1 or 2, wherein the inflow port (13b) and the outflow port (19a) of the casing body (18) are opened in positions that do not overlap each other in the vertical direction.
The tank (30) has an upper surface and a lower surface that are inclined with respect to the horizontal direction,
The communication port formed in said tank first structure (31), a feature that it is formed with a plurality of spaced inclined direction between the inlet (13b) and the outlet (19a) To do.

The invention of claim 4 is any one of claims 1 to 3, wherein the casing first half (3) and the casing second half (5) are each made of resin,
The overlapping portion of the casing first half (3) and the casing second half (5) is heat-welded and joined.

  According to the first aspect of the present invention, since the tank having a chamber therein and having a communication port that communicates the inside and outside of the chamber is formed on at least one side of the casing body, Even if the oil in the oil pan suddenly moves during traveling and the amount of oil staying in the vicinity of the inlet of the casing body temporarily decreases, the oil stored in the tank is connected to the communication port. Since the oil is supplied to the vicinity of the inlet of the casing body, it is possible to suppress the shortage of oil to be supplied to each part of the engine.

  In addition, by providing a tank on at least one side of the casing body, the tank has a so-called baffle function in which the lower surface of the tank can be in contact with the oil surface of the oil and the oil surface of the oil can be suppressed from undulating and shaking. Therefore, the shortage of oil supply to the engine while the vehicle is running can be further suppressed.

  In addition, since the tank is integrally extended on at least one side of the casing body, the manufacturing cost can be reduced as compared with the case where only the tank is manufactured separately.

  According to the second aspect of the present invention, since the communication port is opened between the end surface of the tank side wall and the other tank structure opposite to the end surface of the tank, the communication port located below the oil surface of the oil enters the tank. While the oil flows in, the air in the tank is discharged from the communication port above the oil surface of the oil, and the oil can be stored in the tank. In addition, when the tank side wall is formed in each of the tank first structural body and the tank second structural body, the same effect can be obtained by opening a communication port between the opposing surfaces where the end surfaces of the tank side wall face each other. can get.

  According to the invention of claim 3, since the plurality of communication holes are formed at intervals in the inclined direction on at least one of the upper surface and the lower surface of the tank, the tank is formed from the communication holes below the oil surface of the oil. While the oil flows into the tank, the air in the tank is discharged from the communication hole above the oil level of the oil, and the oil can be stored in the tank.

  According to the invention which concerns on Claim 4, since the casing 1st half body and the casing 2nd half body were each resin-molded and the superposition | polymerization part was joined by heat welding, the heat heated more than the melting temperature of resin, for example The casing body is formed by so-called hot plate welding, in which the plate is brought into close contact with or close to the overlapping portion and melted, and in this molten state, the first half of the casing is superposed on the second half of the casing and pressed and integrated. be able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely an exemplification, and is not intended to limit the present invention.

<Embodiment>
1 is a side view showing a configuration of an engine oil strainer according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is an exploded perspective view.

  As shown in FIGS. 1 to 3, the oil strainer 1 includes a casing first half 3 and a casing second half 5 that are joined to each other by welding (polymerization integration), and the casing first and second half. The filter 7 is arranged between the bodies 3 and 5. Each of these three members is a resin molded product.

  The casing first half 3 includes a body portion 9 having a substantially vertically long rectangular shape and a shallow dish shape, and a flange portion 11 integrally formed over the entire circumference of the body portion 9. An inflow pipe portion 13 having an inflow passage 13a is integrally formed at the lower end of the outer surface of the main body portion 9, an inflow port 13b is formed at the upstream end of the inflow passage 13a, and the downstream end of the inflow passage 13a is a casing. Opening to the inner surface side of the first half 3. On the joint surface side of the flange portion 11 with the casing second half 5, a welding ridge portion 11 a is provided to protrude over the entire circumference.

  A substantially vertically rectangular and shallow dish-shaped tank first structural body 31 is integrally extended in the longitudinal center of the casing first half 3 and on both sides in the width direction. The tank first component 31 constitutes a lower surface of the tank 30 and a lower tank side wall 31a for temporarily storing oil in an oil pan P disposed below the engine body (not shown).

  The end surface of the tank side wall 31 a of the tank first component 31 is formed at a height lower than the end surface of the protrusion 11 a of the casing first half 3. In addition, two communication holes 31 b and 31 b are formed on the bottom surface of the tank first structural body 31 with an interval in the longitudinal direction of the casing first half 3.

  On the other hand, the casing second half 5 is also provided with a substantially vertically long rectangular shallow dish-shaped main body part 15 and a flange part 17 formed integrally with the main body part 15. An outflow pipe portion 19 having an outflow passage 19a is integrally provided at the upper end of the outer surface of the main body portion 15, an outflow port 19b is formed at the downstream end of the outflow passage 19a, and the upstream end of the outflow passage 19a is a casing. It opens to the inner surface side of the second half 5. On both sides of the outflow pipe portion 19, projecting piece portions 21 having bolt insertion holes 21a are integrally projected so as to sandwich the outflow port 19b. Also on the joint surface side of the flange portion 17 with the casing first half 3, a welding ridge portion 17 a is projected over the entire circumference. The width of the protrusion 17a is narrower than the width of the protrusion 11a of the casing first half 3. Further, the filter receiving step 17b is formed inside the protruding portion 17a so as to be in a low position lower than the tip of the protruding portion 17a.

  In addition, a substantially vertically rectangular and shallow dish-shaped tank second structural body 35 corresponds to the tank first structural body 31 at both sides in the longitudinal center of the casing second half 5 in the longitudinal direction. It extends integrally. The tank second structure 35 constitutes the upper surface of the tank 30 and the upper tank side wall 35a.

  The end surface of the tank side wall 35 a of the tank second structural body 35 is formed at a height lower than the end surface of the protrusion 17 a of the casing second half 5. In addition, two communication holes 35 b and 35 b are formed on the bottom surface of the tank second structural body 35 with an interval in the longitudinal direction of the casing second half 5.

  And although mentioned later in detail, the tank 1st structure 31 and the tank 2nd structure 35 are obtained by superposing | polymerizing and integrating the flange parts 11 and 17 of the said casing 1st and 2nd half bodies 3 and 5. A tank 30 that is disposed to face each other and has a chamber C therein is configured. The chamber C inside the tank 30 and the flow path 27 inside the casing body 18 are blocked by a superposition part in which the flange parts 11 and 17 are integrated with each other.

  In addition, the tank 30 has a communication port 32 that communicates the inside of the chamber C and the outside of the chamber C between the opposing surfaces in which the end surfaces of the tank side walls 31a and 35a of the tank first and second structural bodies 31 and 35 face each other. Is open.

  The filter 7 includes a substantially vertically long rectangular main body portion 23 including an annular frame portion 23a and a mesh portion 23b integrally formed inside the annular frame portion 23a, and a flange portion is provided around the entire circumference of the main body portion 23. 25 is integrally formed. The flange portion 25 is also provided with a welding ridge portion 25a extending over the entire circumference. The width of the protrusion 25a is set to be substantially equal to the width of the protrusion 11a of the casing first half 3 when combined with the width of the protrusion 17a of the casing second half 5. Further, the surface of the flange portion 25 opposite to the protruding portion 25 a is supported by the filter receiving step portion 17 b of the casing second half 5.

  Hereinafter, a procedure for constructing the oil strainer 1 by assembling the casing first half 3, the casing second half 5, and the filter 7 will be described. First, the surface of the flange portion 25 of the filter 7 opposite to the protruding portion 25 a is overlaid on the filter receiving step portion 17 b of the casing second half 5, and the filter 7 is set on the casing second half 5. In this state, the protrusion 17a of the casing second half 5 and the protrusion 25a of the filter 7 overlap each other.

  Next, a hot plate heated to a temperature equal to or higher than the melting temperature of the resin is brought into close contact with or close to the ridges 17a and 25a and the ridge 11a of the casing first half 3. In this melted state, the casing first half 3 is superposed on the casing second half 5, and the protrusion 11 a of the casing first half 3, the casing second half 5, and the protrusion 17 a of the filter 7. , 25a and the casing first half 3 and the casing second half 5 are welded together to be integrated with each other. Thereby, the flow path 27 is formed inside, and the oil strainer 1 having the casing body 18 in which the filter 7 is disposed in the flow path 27 and the tanks 30 and 30 integrally extended on both sides of the casing body 18. Is assembled. Thereby, the inside of the flow path 27 is divided into approximately half by the filter 7 into the inflow pipe section 13 side and the outflow pipe section 19 side, and the oil that has flowed into the flow path 27 from the inlet 13b is externally supplied from the outlet 19b. In the process of flowing out, the filter 7 is used for filtration.

  Hereinafter, the structure of the tank 30 which is a characteristic part of the present invention will be described. The tank 30 is disposed so that the tank first component 31 and the tank second component 35 face each other when the casing first and second halves 3 and 5 are integrated with each other. The lower surface of the first structural body 31 and the tank side wall 31a and the upper surface of the second tank structural body 35 and the tank side wall 35a are partitioned so as to have a chamber C therein.

  The tank side wall 31a of the tank first component 31 is formed at a height lower than the end surface of the ridge 11a of the casing first half 3, while the tank side wall 35a of the tank second component 35 is the casing second. It is formed at a height lower than the end surface of the protrusion 17a of the half body 5, and the inside of the chamber C of the tank 30 and the outside of the chamber C are communicated between the opposing surfaces where the end surfaces of the tank side walls 31a, 35a face each other. The communication port 32 is opened. The communication port 32 is continuously formed on the tank side walls 31a and 35a except for the overlapping portion (welding portion) between the protrusion 11a of the tank first component 31 and the protrusion 17a of the tank second component 35. Has been.

  Further, the tank 30 is inclined such that the upper and lower surfaces of the tank 30 are lower in the vertical direction than the downstream end (right side in FIG. 1) at the upstream end (left side in FIG. 1). It is arranged. As shown in FIG. 3, two communication holes 31b and 31b as communication ports are formed in the lower surface of the tank 30, that is, the lower surface of the tank first component 31 with a gap in the inclined direction. . On the other hand, on the upper surface of the tank 30, that is, the upper surface of the tank second structural body 35, two communication holes 35b and 35b are formed at intervals in the inclined direction.

  As described above, since the communication port 32 is opened between the opposing surfaces of the tank first structural body 31 and the tank second structural body 35 where the end surfaces of the tank side walls 31a and 35a face each other, the oil strainer 1 is used as an oil. When arranged in the pan P, oil flows into the tank 30 from the communication port 32 below the oil level of the oil, while air in the tank 30 flows from the communication port 32 above the oil level of the oil. It is discharged and oil can be stored in the tank 30.

  Further, since the plurality of communication holes 31b and 35b are formed in the upper surface and the lower surface of the tank 30 at intervals in the inclined direction, the oil flows into the tank 30 from the communication holes 31b and 35b below the oil surface of the oil. On the other hand, the air in the tank 30 is discharged from the communication holes 31 b and 35 b above the oil level of the oil, and the oil can be stored in the tank 30.

  Moreover, by extending the tanks 30 and 30 integrally on both sides of the casing body 18, the manufacturing cost can be reduced as compared with the case where only the tank 30 is manufactured separately. Further, the tank 30 also has a so-called baffle function in which the lower surface of the tank 30 is in contact with the oil surface of the oil, and the oil surface of the oil can be suppressed from being waved and shaken. Insufficient supply of oil to the engine can be suppressed.

  When the oil strainer 1 configured as described above is applied to a lubricating system of an engine such as a vehicle, the bolt is inserted into the bolt insertion hole 21a and fastened to the engine, and the outlet 19b is connected to the engine oil pump. The At this time, the upper surface and the lower surface of the tank 30 (oil strainer 1) are inclined with respect to the horizontal plane.

  When the engine is started and the oil pump is activated, the oil in the oil pan P flows into the lower end (upstream) region in the flow path 27 from the inlet 13b.

  Here, when the vehicle body is tilted with respect to the ground while the vehicle is running, the oil in the oil pan P moves abruptly, and the amount of oil staying in the vicinity of the inlet 13b of the oil strainer 1 is temporarily reduced. May decrease. However, in the oil strainer 1 of the present invention, since the tank 30 is provided in the casing body 18, when the amount of oil near the inlet 13b decreases, the oil stored in the tank 30 is connected to the communication port. 32 and the communication holes 31b and 35b, and flows out in the vicinity of the inlet 13b in the oil pan P. Thereby, it can suppress that oil is supplied to the inflow port 13b vicinity of the oil strainer 1, and the oil supplied to each part of an engine is insufficient.

  The oil flowing in from the inlet 13b of the oil strainer 1 flows out from the outlet 19b and is sucked into the oil pump. During this time, the oil passes through the mesh part 23b of the filter 7 and is filtered.

  In this embodiment, the casing first half 3 and the casing second half 5 are polymerized and integrated using a hot plate. However, the present invention is not limited to this, and vibration welding, high frequency welding, and the like are performed. May be performed.

  Further, in the present embodiment, in order to communicate the chamber C of the tank 30 with the outside of the chamber C, a communication port 32 is opened between the opposing surfaces facing the end surfaces of the tank side walls 31a and 35a, and the upper surface of the tank 30 However, it is not necessary to form all the communication ports 32 and the communication holes 31b and 35b in the tank 30. For example, the tank side walls 31a and 35a Only the communication port 32 between the opposed surfaces may be opened, or at least one of the communication holes 31b and 35b on the upper surface and the lower surface of the tank 30 may be formed without providing the communication port 32. In short, it is only necessary to form a communication port through which oil flows into or out of the tank 30.

<Modification>
FIG. 4 is a view corresponding to FIG. 2 showing a configuration of an oil strainer according to a modification of the present invention. Since the difference from the above embodiment is that the shape of the tank first and second structural bodies 51, 55 constituting the tank 50 is changed, hereinafter, the same parts as those of the embodiment are denoted by the same reference numerals and are different. Only the point will be described.

  As shown in FIG. 4, the oil strainer 10 includes a casing body 18 in which the casing first and second halves 3, 5 are integrated so as to have a flow path 27 therein, and are integrated on both sides of the casing body 18. And tanks 50, 50 extending to the front.

  The casing first half 3 includes a body portion 9 having a substantially vertically long rectangular shape and a shallow dish shape, and a flange portion 11 integrally formed over the entire circumference of the body portion 9. On the joint surface side of the flange portion 11 with the casing second half 5, a welding ridge portion 11 a is provided to protrude over the entire circumference. Further, the filter holding step portion 11b is formed at the lower position below the tip of the protrusion portion 11a inside the protrusion portion 11a. On the other hand, the casing second half 5 is provided with a body portion 15 having a substantially oblong rectangular shape and a shallow dish shape.

  The filter 7 includes a substantially vertically long rectangular main body portion 23 including an annular frame portion 23a and a mesh portion 23b integrally formed inside the annular frame portion 23a, and the annular frame portion 23a has a welding protrusion. The strip portion 23c is projected outwardly over the entire circumference. The plate thickness of the protruding portion 23c is set to be substantially equal to the step of the filter holding step portion 11b of the casing first half 3. Thereby, the protrusion 23c of the filter 7 is supported by the opening peripheral edge of the main body 15 of the casing second half 5, and the surface of the protrusion 23c opposite to the support surface is the surface of the casing first half 3. It is held by the filter holding step 11b.

  The tank 50 includes a substantially vertical rectangular and shallow dish-shaped tank first component 51 integrally extending on both sides in the longitudinal direction of the casing first half 3 and the casing second half. The tank 5 is constituted by a substantially vertically long and flat tank second component 55 which is integrally extended on both sides in the width direction and at substantially the center in the longitudinal direction of the body 5 and corresponding to the tank first component 51.

  The tank first component 51 constitutes the lower surface of the tank 50 and the tank side wall 51a. The tank second structural body 55 constitutes the upper surface of the tank 50.

  The end face of the tank side wall 51a of the tank first structural body 51 is formed at a height lower than the end face of the ridge 11a of the casing first half 3, and the end face of the tank side wall 51a and the tank second face opposite thereto are formed. A communication port 52 that communicates the inside of the chamber C and the outside of the chamber C of the tank 50 is opened between the two components 55.

  In this modification, the tank first component 51 has a substantially oblong rectangular and shallow dish shape, and the tank second component 55 has a substantially oblong rectangular shape corresponding to the tank first component 51. On the contrary, the tank second component 55 may have a substantially vertically long rectangular and shallow dish shape, and the tank first component 51 may have a substantially vertically long rectangular shape corresponding to the tank second component 55.

  Moreover, you may make it form a some connection hole in the upper surface and lower surface of the said tank 1st and 2nd structure 51,55 similarly to the said embodiment.

  In the present embodiment and the modification, the tanks 30 and 50 are formed on both sides of the casing body 18, but may be formed only on one side.

  Furthermore, although the said communication port 32 was continuously formed in each tank side wall 31a, 35a except the welding part with the protrusion part 11a, 17a of each tank 1st and 2nd structure 31, 35, it should make it continuous. Instead, it may be opened intermittently. In this case, the tank side walls 31a and 35a that are not opened may be welded and integrated, or may be simply brought into contact with each other.

  As described above, the present invention can ensure a sufficient amount of oil that stays in the vicinity of the inlet of the oil strainer even when the oil distribution in the oil pan is biased while the vehicle is running. Since it is possible to obtain a highly practical effect, it is extremely useful and has high industrial applicability.

It is a side view which shows the structure of the oil strainer which concerns on embodiment of this invention. It is sectional drawing in the II-II line of FIG. It is a disassembled perspective view of the oil strainer which concerns on this embodiment. FIG. 9 is a view corresponding to FIG. 2 illustrating a configuration of an oil strainer according to a modified example.

DESCRIPTION OF SYMBOLS 1 Oil strainer 3 Casing 1st half 5 Casing 2nd half 7 Filter 13b Inlet 18 Casing main body 19b Outlet 27 Flow path 30 Tank 31 Tank 1st structure 31a Tank side wall 31b Communication hole 32 Communication port 35 Tank 2 Structure 35a Tank side wall 35b Communication hole C chamber

Claims (4)

The inlet substantially rectangular casing second half (5) having a substantially rectangular casing first half (3) and the outlet (19a) having a (13b), have a flow path (27) in the interior And a casing body (18) formed by polymerization and integration by the polymerization portion so that the casing first half (3) is positioned on the lower side ,
In the disposed in a flow path (27) within the casing body (18), the process of distributing towards the inlet (13b) from flowing into the flow path (27) in the oil to the outflow port (19a) An oil strainer for an engine comprising a filter (7) for filtering oil,
A tank first structure (31) integrally extending on at least one side of the casing first half (3) , and the casing second half ( 31) corresponding to the tank first structure (31). tank second structure that extends integrally on at least one side of the 5) and by (35) at least one side of the casing body (18), and the width direction of the casing body than the overlapping portion (18) Comprising a tank (30) formed on the outside and having a chamber (C) inside,
The flow path (27 ) inside the casing body (18) and the chamber (C) inside the tank (30) superpose the casing first half (3) and the casing second half (5). Blocked by the integrated overlapping part,
The tank first structure (31), or between the said tank first structure which faces (31) and said tank second structure (35), said chamber (C) and the chamber (C) outside preparative communicated, chamber (C) engine oil strainer, characterized in that the communication port and out of the oil flowing out entrance is formed. In claim 1,
The tank (30) has tank side walls (31a, 35a) formed by bending from at least one of the tank first structure (31) and the tank second structure (35) to the other side,
It said communication port, said tank side wall (31a, 35a) end face and the engine oil strainer, characterized in that is open between the other tank structure (31, 35) opposed to that of. In claim 1 or 2,
The inflow port (13b) and the outflow port (19a) of the casing body (18) are opened in positions that do not overlap each other in the vertical direction,
The tank (30) has an upper surface and a lower surface that are inclined with respect to the horizontal direction,
The communication port formed in said tank first structure (31), a feature that it is formed with a plurality of spaced inclined direction between the inlet (13b) and the outlet (19a) Oil strainer for engine. In any one of Claims 1 thru | or 3,
The casing first half (3) and the casing second half (5) are each made of resin,
An oil strainer for an engine, wherein a superposed portion of the casing first half (3) and the casing second half (5) is joined by heat welding.

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