JP2012127221A - Oil strainer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil strainer which has a necessary and sufficient filtration function, and in which a high-rigidity filter can be formed easily, allowing oil to flow smoothly.SOLUTION: A cylindrical body 3 is constituted of a first half body 31 with a recessed cross-section which has an open edge on the lower side and a second half body 33 with a recessed cross-section which has an open edge on the upper side. A plate-like filter 5 has a mesh part 51 which filters oil. By joining the open edges of the first half body 31 and the second half body 33 to each other and holding the filter 5 between both of them in an integrated manner, a hollow part 30 through which the oil flows is formed therein. On the cylindrical body 3, an inflow hole 37a which causes the oil to flow into the hollow part 30 is formed on one end and an outflow hole 39a which causes the oil to flow out from the hollow part 30 is formed on the other end. A non-mesh part 53 which is continued to the mesh part 51 and guides the oil along the downstream side from the upstream side is disposed on the filter 5.

Description

  The present invention relates to an oil strainer that removes impurities from oil circulating inside a power unit in a vehicle, for example.

  2. Description of the Related Art Conventionally, a power device such as an engine or transmission in a vehicle has been provided with an oil strainer that removes impurities such as dust contained in oil circulating inside the power device. For example, an oil strainer disclosed in Patent Document 1 includes a rectangular cylindrical body having a hollow portion in which a plate-like filter for filtering oil is disposed, and one end in the longitudinal direction of the cylindrical body. Is formed with an inflow hole through which oil flows into the hollow part, and an outflow hole through which oil flows out from the hollow part is formed at the upper end in the longitudinal direction of the cylindrical body. The said cylindrical body is divided | segmented into the upper and lower cylindrical bodies located in the upper part, and the lower cylindrical body located in the lower part into the half shape up and down at the position of the approximate vertical center. Then, the lower cylindrical body and the upper cylindrical body are assembled to each other by sandwiching the outer peripheral edge of the filter between the lower peripheral edge of the upper cylindrical body and the upper peripheral edge of the lower cylindrical body. It has become.

JP 2006-322408 A (paragraph 0016, FIGS. 1 and 2)

  By the way, in recent years, an oil strainer may be disposed in a place where there is almost no space inside the vehicle due to an increase in the number of parts accompanying the performance enhancement of the vehicle. It may be necessary to move the positions away from each other.

  In order to cope with this, it is conceivable that the cylindrical body of the oil strainer is elongated so that the inflow hole and the outflow hole can be arranged at desired positions.

  However, in the oil strainer as in Patent Document 1, when the cylindrical body is elongated, the filter needs to be elongated along the dividing surface formed between the upper cylindrical body and the lower cylindrical body. If the filter is elongated, it will have an unnecessarily filtering function, and the rigidity of the filter itself may be reduced, and the filter may be deformed unexpectedly by a load through which oil passes. Furthermore, when the filter is elongated, there is a problem that it is difficult to form a mesh portion of the filter.

  The present invention has been made in view of such a point, and an object of the present invention is to easily form a filter having a necessary and sufficient filtration function and a high rigidity, and the oil flows smoothly. To provide an oil strainer.

  In order to achieve the above object, the present invention is characterized in that a part of the structure of the cylindrical body and the filter has been devised so that the portion having the filtering function of the filter is shortened along the oil flow direction. And

  Specifically, a cylindrical body composed of a first half and a second half having a concave cross section, and a plate filter having a mesh part for filtering oil, the cylindrical body includes the first half By aligning the open edges of the first half and the second half and sandwiching the filter together between them, a hollow portion through which oil passes is formed, and at one end Oil that has an inflow hole through which oil flows into the hollow portion and an outflow hole through which the oil flows out from the hollow portion is formed at the other end, and filters the oil that passes through the hollow portion through the mesh portion of the filter The following solutions were taken for strainers.

  That is, in the first invention, at least one of the inner surface of the cylindrical body and the filter is provided with an oil non-permeation region that is continuous with the mesh portion and guides oil from the upstream side to the downstream side. It is characterized by that.

  According to a second aspect, in the first aspect, a curved portion is provided in the middle of the cylindrical body, and the oil non-permeable region is provided at a position corresponding to the curved portion of the filter. It is characterized by that.

  According to a third invention, in the first invention, the oil non-permeable region extends outward from an open edge of one of the first half and the second half, and the filter and the surface. It is characterized by being continuous.

  According to a fourth invention, in the third invention, a filter fitting portion capable of fitting the filter periphery is provided in either one of the first half and the second half. The other of the first half and the second half is formed with a protruding portion that protrudes toward a continuous portion of the filter peripheral edge with the oil non-permeation region and whose tip contacts the filter peripheral edge. It is characterized by.

  According to a fifth aspect, in the fourth aspect, the protrusion has a plate shape whose plate surface follows the flow of oil.

  In a sixth aspect based on the first aspect, the inflow hole is supported via an outer cylinder part projecting downward from one end of the cylindrical body, and one end of the filter via a connecting part, and the outer cylinder part The inner cylinder part is inserted into the inner cylinder part and protrudes downward from the lower edge of the outer cylinder part. The inner cylinder part is displaced upward when the connecting part is deformed or broken by a load from below. The oil non-permeation region is arranged at a position corresponding to the upper side of the inflow hole of the filter.

  In the first invention, even if the oil strainer is in the shape of a long cylinder, the mesh portion of the filter extending along the longitudinal direction of the oil strainer is shortened, so that the rigidity of the filter itself is increased while sufficiently retaining the filtering function. Can do. In addition, the mesh portion is shortened in the longitudinal direction of the oil strainer, and further, an oil non-permeable region is formed along the mesh portion, so that the oil is guided to the oil non-permeable region and the oil flow resistance is reduced. The oil can flow smoothly. Furthermore, since the mesh portion is shortened in the longitudinal direction of the oil strainer, the mesh portion is not easily broken when the filter is removed from the mold at the time of filter molding, and the filter can be easily molded.

  In the second invention, since the oil non-permeation region rectifies the oil flow in the curved portion of the cylindrical body where the oil flow in the hollow portion changes greatly, the oil flow resistance is reduced. Can flow smoothly.

  In the third invention, since the cross-sectional area of the portion of the cylindrical body where the filter is not disposed is small, the shape of the oil strainer can be made compact, and the degree of freedom in designing the layout is increased during installation.

  In 4th invention, when an oil strainer is assembled, a protrusion part will come to support the filter outer periphery which is not clamped by the 1st half body and the 2nd half body. Therefore, the filter can be firmly fixed in the oil strainer.

  In the fifth aspect of the invention, since the protruding portion rectifies the oil flowing through the hollow portion, the oil flow resistance can be reduced and the oil can flow smoothly.

  In the sixth invention, even if an impact is applied to the inflow hole unexpectedly from below, the inner connecting portion moves upward relative to the outer cylindrical portion while the flexible connecting portion is deformed to absorb the impact. It becomes like this. Therefore, even if an impact is applied to the inflow hole, it can be avoided that the inflow hole is blocked and the oil does not flow in the hollow portion. Further, even when the inner cylinder portion moves upward, the flexible connecting portion comes into contact with the oil non-permeable region of the filter. Therefore, it can be avoided that the flexible connecting portion comes into contact with the mesh portion that is vulnerable to impact and breaks the mesh portion.

It is a perspective view of the oil strainer which concerns on Embodiment 1 of this invention. It is the sectional view on the AA line of FIG. It is a top view of the filter concerning Embodiment 1 of the present invention. (A) is a top view of the filter which concerns on the modification of Embodiment 1, (b) is the BB sectional drawing of (a). It is a disassembled perspective view of the oil strainer which concerns on Embodiment 2 of this invention. FIG. 3 is a view corresponding to FIG. 2 according to Embodiment 2 of the present invention. (A) is FIG. 2 equivalent view which concerns on Embodiment 3 of this invention, (b) is CC sectional view taken on the line of (a), (c) is DD of (a). It is line sectional drawing, (d) is the EE sectional view taken on the line of (a). It is a top view of the filter concerning Embodiment 3 of the present invention. FIG. 6 is a view corresponding to FIG. 2 according to Embodiment 4 of the present invention. It is FIG. 2 equivalent view which concerns on Embodiment 5 of this invention. It is FIG. 2 equivalent view which concerns on Embodiment 6 of this invention. It is FIG. 2 equivalent view which concerns on Embodiment 7 of this invention. FIG. 9 is a view corresponding to FIG. 2 according to an eighth embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 2 according to Embodiment 9 of the present invention. It is FIG. 2 equivalent view which concerns on Embodiment 10 of this invention. It is a top view of the oil strainer which concerns on Embodiment 10 of this invention. FIG. 16 is a diagram corresponding to FIG. 16 according to Modification 1 of Embodiment 10. FIG. 16 is a diagram corresponding to FIG. 15 according to a second modification of the tenth embodiment. It is FIG. 2 equivalent view based on Embodiment 11 of this invention. It is a top view of the oil strainer which concerns on Embodiment 11 of this invention. FIG. 20 is a diagram corresponding to FIG. 19 according to Modification 1 of Embodiment 11. It is FIG. 2 equivalent view which concerns on Embodiment 12 of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following description of the preferred embodiment is merely exemplary in nature.
Embodiment 1 of the Invention
FIG. 1 shows an oil strainer 1 according to Embodiment 1 of the present invention. The oil strainer 1 is made of a resin material, and although not shown, is disposed inside an oil pan below the engine of the vehicle and constitutes a part of the engine lubrication path. The oil is filtered to remove impurities such as dust. It is like that.

  As shown in FIG. 2, the oil strainer 1 includes a long and flat rectangular tube body 3 and a plate filter 5 for filtering oil.

  The cylindrical body 3 is composed of a first half body 31 having a concave cross section that opens downward and a second half body 33 having a concave cross section that opens upward, and one end in the longitudinal direction is below the other end. It is gently inclined to be located at.

  The open end edge of the first half 31 has a flange shape extending outward, and a step-like filter fitting portion 31b into which the peripheral edge of the filter 5 can be fitted is formed on the inner edge. When the filter 5 is fitted in the filter fitting portion 31b, the filter surface of the filter 5 is along the open surface of the first half 31.

  On the other hand, the open end edge of the second half member 33 extends outward in a flange shape so as to correspond to the open end edge of the first half member 31.

  Then, in a state where the filter 5 is fitted to the filter fitting portion 31b, the open end edges of the first half 31 and the second half 33 are aligned and the filter 5 is interposed therebetween. As a result, the cylindrical body 3 in which the hollow portion 30 through which oil passes is formed is assembled.

  An inflow pipe 37 provided with an inflow hole 37a for allowing oil to flow into the hollow portion 30 protrudes from a lower portion on one end side in the longitudinal direction of the cylindrical body 3, while oil flows into an upper portion on the other end side in the longitudinal direction. An outflow pipe 39 provided with an outflow hole 39a for flowing out from the hollow portion 30 is projected, and a plate-like mounting portion 6 for attaching the oil strainer 1 to the lower part of the engine is provided at the protruding end of the outflow pipe 39. The strainer 1 extends in the width direction.

  As shown in FIG. 3, the filter 5 includes an outer peripheral frame 5a formed along the outer peripheral edge of the filter 5, and an inner frame extending in a lattice shape in the longitudinal direction and the width direction inside the outer peripheral frame 5a. 5b. A mesh part 51 for filtering oil surrounded by the outer peripheral frame 5a and the inner frame 5b is formed on one end side and the other end side in the longitudinal direction of the filter 5, and the ratio of the mesh part 51 to the entire surface of the filter 5 Is capable of sufficiently fulfilling the filtering function of the oil strainer 1.

  A plate-like non-mesh portion (oil non-permeable region) 53 that guides the oil from the upstream side to the downstream side is formed in the substantially central portion of the filter 5. Accordingly, even if the oil strainer 1 is in the shape of a long cylinder, the mesh portion 51 of the filter 5 extending along the longitudinal direction of the oil strainer 1 is shortened, so that the rigidity of the filter 5 itself can be increased while maintaining a sufficient filtering function. Can be increased. Further, since the mesh portion 51 is shortened in the longitudinal direction of the oil strainer 1, the mesh portion 51 is not easily broken when the filter 5 is removed from the mold when the filter 5 is formed, and the filter 5 is easily formed. be able to.

  Next, the flow of oil in the oil strainer 1 will be described.

  When a pump (not shown) as a part of the lubrication circuit is activated, the oil is sucked into the hollow portion 30 from the inflow hole 37a of the inflow pipe 37 immersed in the oil. The sucked oil passes through the hollow portion 30 from one end side in the longitudinal direction of the cylindrical body 3 toward the other end side. The oil passing through the hollow part 30 is filtered while flowing along the non-mesh part 53 of the filter 5 and through the mesh part 51 from the lower side to the upper side. And the oil which passed the said hollow part 30 passes the outflow hole 39a of the said outflow pipe 39, and is supplied to each part (not shown) of an engine. Accordingly, since the non-mesh portion 53 is formed along the mesh portion 51, the oil is guided to the non-mesh portion 53, the flow resistance of the oil flowing through the hollow portion 30 is reduced, and the oil is reduced. It can flow smoothly.

  FIG. 4 shows a modification of the first embodiment of the present invention. This modification is different from the first embodiment described in detail above in the following points. That is, in the modification, as shown in FIG. 4B, a substantially circular non-mesh portion 53a is formed at a position corresponding to the inflow hole 37a on one end side in the longitudinal direction of the filter 5. As shown in FIG. 4 (a), the lower surface side of the non-mesh portion 53a projects downward, and its shape gradually decreases in diameter as it goes to the tip side. The sucked oil is diffused on the curved surface. Therefore, the oil sucked up from the inflow hole 37a does not pass through the position corresponding to the inflow hole 37a of the filter 5 in a concentrated manner, and it is possible to avoid the dust and the like in the oil from being concentrated on the location. Thus, it is possible to prevent an early decline in the partial filtration function.

In this modification, the non-mesh portion 53a has a substantially circular shape, but may have other shapes, for example, an elliptical shape or a polygonal shape. Moreover, although the lower end surface of the non-mesh part 53a protrudes below, it may be flat, and it is good also as a structure which makes a plate-shaped member project from the said flat lower end surface.
<< Embodiment 2 of the Invention >>
5 and 6 show an oil strainer 1 according to Embodiment 2 of the present invention. In the second embodiment, only a part of the structure of the cylindrical body 3 and the filter 5 is different from that of the first embodiment, and the other parts are the same as those of the first embodiment. Explained.

  In the second embodiment, the stepped filter fitting portion 33b in which the periphery of the filter 5 can be fitted not inside the open end edge of the first half 31 but inside the open end edge of the second half 33. Is formed.

  Further, a cylindrical outer cylinder portion 35 projecting downward is formed at a lower portion on one end side in the longitudinal direction of the second halved body 33, and an annular recess 36 is formed on the proximal end side of the outer cylinder portion 35. Is formed along the proximal end opening edge.

  A mesh portion 51 is formed on the other end side from the substantially central portion in the longitudinal direction of the filter 5, while a non-mesh portion 53 is formed on one end side in the longitudinal direction of the filter 5. Is a position corresponding to the inflow hole 37a.

  Further, a plate-like flexible connecting portion 57 protruding downward is formed at one end in the longitudinal direction of the filter 5, and the lower end of the flexible connecting portion 57 is fitted to the outer cylinder portion 35. A cylindrical inner cylinder portion 55 to be inserted is integrally supported by hanging.

  An annular extending portion 54 extending outward is formed at the upper end edge of the inner cylindrical portion 55, and an annular recess of the outer cylindrical portion 35 is formed at the extending end edge of the annular extending portion 54. An annular protrusion 56 that can be fitted to 36 is provided so as to protrude downward.

  And the inflow hole 37a of Embodiment 2 consists of the said outer cylinder part 35 and the said inner cylinder part 55, The said inner cylinder part 55 is inserted by the said outer cylinder part 35, and it is assembled | attached without a clearance gap. It has become.

  The lower end edge of the inner cylinder part 55 protrudes below the lower end edge of the outer cylinder part 35, and when a load is applied to the inner cylinder part 55 from below, the flexible connecting part 57 is bent and deformed. As a result, the inner cylinder portion 55 is displaced upward with respect to the outer cylinder portion 35 until the lower end edge of the inner cylinder portion 55 is located at the same position as the lower end edge of the outer cylinder portion 35. The flexible connecting portion 57 comes into contact with the non-mesh portion 53.

  As shown in FIG. 6, the oil strainer 1 is configured so that the maximum position of the oil surface height of the oil in the oil pan is on the base end side of the outer cylinder portion 35 and the oil surface height of the oil. Is disposed in the oil pan so that the front end edge of the outer cylinder portion 35 is immersed, and the flexible connecting portion 57 is provided with the oil surface height of the oil in the oil pan. Is deformed at a position higher than the maximum position.

  6 indicates the position of the oil level when the vehicle turns to the left, and the line M2 indicates the position of the oil level when the vehicle turns to the right. The front end edge does not jump out above the lines M1 and M2 even when the vehicle turns left and right. Therefore, even if the oil level in the oil pan is shaken, the tip edge of the outer cylinder portion 35 is always immersed in the oil, so that air can be prevented from being sucked into the oil strainer 1.

  The flexible connecting portion 57 is provided at one end in the longitudinal direction of the filter 5. However, the flexible connecting portion 57 may be provided at the non-mesh portion 53, for example, at a position where the flow resistance in the hollow portion 30 does not increase. As long as it is any location.

  In the second embodiment, only one flexible connecting portion 57 is provided, but a plurality of flexible connecting portions 57 may be provided.

  In addition, since the flow of the oil in the oil strainer 1 which concerns on Embodiment 2 is the same as the modification of Embodiment 1, detailed description is abbreviate | omitted.

  Next, a case where a curbstone or the like is in contact with the lower part of the oil pan, for example, when the vehicle is running will be described.

  First, when a curb or the like comes into contact with the lower part (not shown) of the oil pan when the vehicle is traveling and the bottom surface of the oil pan located below the inflow hole 37a is deformed upward, the bottom surface of the oil pan becomes the inner cylindrical portion 55. Touch the bottom edge. Then, a load is applied to the inner cylinder portion 55 from below by the impact, and the lower end edge of the inner cylinder portion 55 becomes the same position as the lower end edge of the outer cylinder portion 35 while the flexible connecting portion 57 is deformed. The inner cylinder part 55 moves upward with respect to the outer cylinder part 35. Then, the curved flexible connecting portion 57 contacts the non-mesh portion 53 of the filter 5.

  Therefore, according to the second embodiment of the present invention, the same effect as that of the first embodiment can be obtained, and the flexible connecting portion 57 can be deformed and the inner cylinder can be deformed even when an impact is applied to the inflow hole 37a from below. The portion 55 moves upward relative to the outer cylinder portion 35 to absorb the impact. Therefore, it is possible to avoid that the inflow hole 37a is blocked even if an impact is applied to the inflow hole 37a and the oil does not flow through the hollow portion 30. Moreover, the inner cylinder part 55 absorbs the impact applied to the inflow hole 37a, so that the oil strainer 1 can be prevented from being damaged, and air can be prevented from being sucked due to the oil strainer 1 being damaged.

  Even if the inner cylinder part 55 moves upward, the flexible connecting part 57 comes into contact with the non-mesh part 53 of the filter 5, so that the flexible connecting part 57 is vulnerable to impact. It can be avoided that the mesh portion 51 is broken by touching the mesh.

  In the second embodiment, the inner cylinder part 55 is formed integrally with the filter 5 via the flexible connection part 57. However, the filter 5, the flexible connection part 57 and the inner cylinder part 55 are separately provided. Alternatively, the flexible connecting portion 57 and the inner cylinder portion 55 may be assembled to the filter 5. Further, the flexible connecting portion 57 and the inner cylindrical portion 55 may be integrated with the filter 5, or the inner cylindrical portion 55 may be assembled with the flexible connecting portion 57 formed integrally with the filter 5. You may do it.

  In the second embodiment, the connecting portion 57 has flexibility and is deformed by the upward movement of the inner cylinder portion 55. For example, a weak portion is provided in a part of the connecting portion 57. Thus, a configuration may be adopted in which the fragile portion of the connecting portion 57 is broken by the upward movement of the inner cylinder portion 55.

Further, the upper wall on one end side in the longitudinal direction of the first divided body 31 may be deformed downward so as to approach (or contact) the non-mesh part 53. Thereby, even if the inner cylinder part 55 receives a strong impact from below and moves upward and contacts the non-mesh part 53, the deformed portion of the first divided body 31 prevents the non-mesh part 53 from moving upward. Thus, the non-mesh portion 53 can be prevented from being broken. In addition, the oil strainer 1 becomes compact by the amount that the one end in the longitudinal direction of the first divided body 31 is deformed downward. Further, the oil is likely to stay between one end in the longitudinal direction of the first divided body 31 and the non-mesh part 53, but one end in the longitudinal direction of the first divided body 31 and the non-mesh part 53 The space between the two can be narrowed so that the oil does not enter between the one end side in the longitudinal direction of the first divided body 31 and the non-mesh part 53, and the oil flow in the hollow part 30 can be made smooth. .
<< Embodiment 3 of the Invention >>
7 and 8 show an oil strainer 1 according to Embodiment 3 of the present invention. In the third embodiment, only the partial structure of the cylindrical body 3 and the position of the non-mesh part 53 of the filter 5 are different from those of the first embodiment, and the other structure and the oil flow in the oil strainer 1 are implemented. Since it is the same as the first embodiment, only the parts different from the first embodiment will be described in detail below.

  As shown in FIG. 8, the filter 5 according to the third embodiment has a substantially central portion that is wider than one end side and the other end side in the longitudinal direction, and the non-mesh portion 53 is a flat surface in the central portion. It is formed in a substantially L shape when viewed.

  As shown in FIGS. 7 (a) and 7 (c), for example, a curved portion 31c that is recessed downward to avoid an obstacle is located at one side in the width direction at the substantially center of the first half 31 in the longitudinal direction. The non-mesh portion 53 is located at a position corresponding to the curved portion 31c.

  Further, as shown in FIG. 7B, for example, a curved portion 33c that is recessed upward is formed on the other end in the longitudinal direction of the second halved body 33 to avoid an obstacle. The non-mesh portion 53 is a position corresponding to the curved portion 33c.

  And the external shape of the said cylindrical body 3 is formed so that the cross-sectional area of the said hollow part 30 may become substantially the same width in any position of the longitudinal direction of the cylindrical body 3, and passes the said hollow part 30. Oil distribution resistance is reduced. For example, the cross-sectional area S1 of the hollow portion 30 where the curved portion 33c is formed, the cross-sectional area S2 of the hollow portion 30 where the curved portion 31c is formed, and the cross-sectional area S3 on one end side in the longitudinal direction of the oil strainer 1 are approximately. It is the same size.

As described above, according to the third embodiment of the present invention, the same effects as those of the first embodiment can be obtained, and in the curved portions 31c and 33c of the cylindrical body 3 in which the flow of oil in the hollow portion 30 changes greatly, Since the non-mesh portion 53 rectifies the flow of oil, the oil flow resistance can be reduced and the oil can flow smoothly.
<< Embodiment 4 of the Invention >>
FIG. 9 shows an oil strainer 1 according to Embodiment 4 of the present invention. In this Embodiment 4, from the longitudinal direction one end of the cylindrical body 3 to the substantially center part is deform | transforming upward in the step shape, and the point which deform | transforms a part of filter 5 so as to correspond to the said part is implemented. Since the other structure and the flow of oil in the oil strainer 1 are the same as those of the first embodiment except for the first embodiment, only the parts different from the first embodiment will be described in detail below.

  While one end in the longitudinal direction of the first half-divided body 31 is deformed upward in the shape of a step, the first half-divided body 33 extends from one end in the longitudinal direction to the substantially central part. The inner surface of the deformed portion extends along the open surface of the first half 31 so as to correspond to the deformed portion 31. And from the longitudinal direction one end of the said filter 5 to the substantially center part is deform | transforming into a step shape so as to correspond to the said 1st half body 31 and the 2nd half body 33, The outer periphery of the said deformation part A plurality of notches 5c for improving the yield are formed on the lower end side of the frame 5a.

  As described above, according to the fourth embodiment of the present invention, the same effects as those of the first embodiment can be obtained, and the outer shape of the oil strainer 1 can be deformed, so that even in a place where there is almost no space inside the vehicle. The oil strainer 1 can be disposed while avoiding parts.

In addition, since the non-mesh part 53 is provided so as to correspond to the deformed part of the first half 31 or the second half 33, the oil that has become turbulent in the deformed part passes through the filter 5. It is possible to prevent the flow resistance from being increased by disturbing the flow of the oil on the passing side.
<< Embodiment 5 of the Invention >>
FIG. 10 shows an oil strainer 1 according to Embodiment 5 of the present invention. The fifth embodiment is different from the fourth embodiment in that the filter 5 is fitted to the second half 33 instead of the first half 31, and the other structures and the oil strainer 1 are different. Since the internal oil flow is the same as that of the fourth embodiment, only the parts different from the fourth embodiment will be described in detail below.

  In the fifth embodiment, the stepped filter fitting portion 33b in which the peripheral edge of the filter 5 can be fitted not inside the open end edge of the first half 31 but inside the open end of the second half 33. Is formed.

  The inner surface from the other longitudinal end of the first half 31 to the substantially central portion extends along the open surface of the second half 33, and is substantially centered from the other longitudinal end of the filter 5. A plurality of cutout portions 5c for improving the yield are formed on the upper end side of the peripheral frame 5a.

As described above, according to the fifth embodiment of the present invention, even when the filter 5 is fitted to the second half 33, the same effect as that of the fourth embodiment can be obtained.
Embodiment 6 of the Invention
FIG. 11 shows an oil strainer 1 according to Embodiment 6 of the present invention. In this Embodiment 6, from the longitudinal direction one end to the substantially center part of the cylindrical body 3 is deform | transforming into the step shape below, The point which deform | transforms a part of filter 5 corresponding to the said part is Embodiment. Since the other structure and the flow of oil in the oil strainer 1 are the same as those in the first embodiment, only the portions different from those in the first embodiment will be described in detail below.

  The first half-divided body 31 is deformed downward from one end in the longitudinal direction to a substantially central portion, and the inner surface of the deformed portion extends along the open surface of the second half-divided body 33, while the second half From one end in the longitudinal direction of the half-divided body 33 to a substantially central portion, the half-divided body 33 is deformed downward in a step shape so as to correspond to the deformed portion of the first half-divided body 31. And from the longitudinal direction one end of the said filter 5 to the substantially center part is deform | transforming into a level | step difference below so as to correspond to the said 1st half body 31 and the 2nd half body 33, The outer periphery of the said deformation part A plurality of cutout portions 5c for improving the yield are formed on the upper end side of the frame 5a.

  As described above, according to the sixth embodiment of the present invention, the same effects as those of the first embodiment can be obtained, and the outer shape of the oil strainer 1 can be changed so that the space inside the vehicle is almost free. The oil strainer 1 can be disposed while avoiding parts.

In addition, since the non-mesh part 53 is provided so as to correspond to the deformed part of the first half 31 or the second half 33, the oil that has become turbulent in the deformed part passes through the filter 5. It is possible to prevent the flow resistance from being increased by disturbing the flow of the oil on the passing side.
<< Embodiment 7 of the Invention >>
FIG. 12 shows an oil strainer 1 according to Embodiment 7 of the present invention. The seventh embodiment is different from the sixth embodiment in that the filter 5 is fitted to the second half 33 instead of the first half 31, and the other structures and the oil strainer 1 are different. Since the internal oil flow is the same as in the sixth embodiment, only the parts different from the sixth embodiment will be described in detail below.

  In the sixth embodiment, the stepped filter fitting portion 33b in which the peripheral edge of the filter 5 can be fitted not inside the open end edge of the first half 31 but inside the open end edge of the second half 33. Is formed.

  Further, the inner surface from one end in the longitudinal direction of the first half 31 to the substantially central portion extends along the open surface of the second half 33, and from the one end in the longitudinal direction of the filter 5 to the substantially central portion. A plurality of notches 5c for improving the yield are formed on the upper end side of the outer peripheral frame 5a.

As described above, according to the seventh embodiment of the present invention, even when the filter 5 is fitted to the second half 33, the same effect as that of the sixth embodiment can be obtained.
<< Embodiment 8 of the Invention >>
FIG. 13 shows an oil strainer 1 according to an eighth embodiment of the present invention. In the eighth embodiment, only the partial structure of the cylindrical body 3 and the filter 5 is different from that of the first embodiment, and the flow of oil in the oil strainer 1 is the same as that of the first embodiment. Hereinafter, only parts different from the first embodiment will be described in detail.

  A curved portion 3a that is curved in an arc shape so as to bulge upward in a side view is formed at a substantially central portion in the longitudinal direction of the cylindrical body 3, and a non-mesh portion 53 at a substantially central portion in the longitudinal direction of the filter 5 is The curved portion 3a is curved in an arc shape so as to correspond to the curved portion 3a.

  As described above, according to the eighth embodiment of the present invention, the same effect as in the first embodiment can be obtained, and in the curved portion 3a of the cylindrical body 3 where the flow of oil in the hollow portion 30 changes greatly, the non-mesh Since the portion 53 rectifies the oil flow, the oil flow resistance can be reduced and the oil can flow smoothly.

In addition, since the non-mesh part 53 is provided so as to correspond to the deformed part of the first half 31 or the second half 33, the oil that has become turbulent in the deformed part passes through the filter 5. It is possible to prevent the flow resistance from being increased by disturbing the flow of the oil on the passing side.
<< Ninth Embodiment of the Invention >>
FIG. 14 shows an oil strainer 1 according to Embodiment 9 of the present invention. In the ninth embodiment, the substantially central portion in the longitudinal direction of the cylindrical body 3 and the filter 5 is curved in an arc shape so as to swell downward in a side view, and the filter 5 is formed in the first half 31. Since only the second embodiment is different from the eighth embodiment in that the second half 33 is fitted, the other structure and the oil flow in the oil strainer 1 are the same as those in the eighth embodiment. Detailed description will be omitted.

As described above, according to the ninth embodiment of the present invention, the same effect as in the eighth embodiment can be obtained.
<< Embodiment 10 of the Invention >>
15 and 16 show an oil strainer 1 according to Embodiment 10 of the present invention. In the tenth embodiment, the filter 5 without the non-mesh portion 53 is disposed only on the downstream side of the cylindrical body 3, and the partial structure of the cylindrical body 3 is changed accordingly. Since only the difference from the first embodiment is the same as the first embodiment, only the portions different from the first embodiment will be described in detail below.

  The other end in the longitudinal direction of the first half body 31 has a concave cross section that opens downward, and an extended portion 31d that extends outward on one end in the longitudinal direction is formed on the open end edge. Yes. The extending portion 31d constitutes the oil non-permeable region of the present invention, and is continuous with the filter surface of the filter 5 fitted to the filter fitting portion 31b formed inside the open end edge. ing.

  The second half body 33 is formed in a stepped shape so that one end side is positioned below the other end side in the longitudinal direction of the cylindrical body 3, and the longitudinal direction of the second half body 33 is substantially the same. At the center portion, a protruding portion 33d is formed that protrudes toward a continuous portion with the extending portion 31d on the periphery of the filter 5.

  The protruding portion 33d has a plate shape in which the plate surface follows the flow of oil flowing through the hollow portion 30, and the tip of the protruding portion 33d comes into contact with the periphery of the filter 5.

  Next, the flow of oil in the oil strainer 1 will be described.

  The oil sucked into the hollow portion 30 from the inflow hole 37a first flows at one end in the longitudinal direction of the cylindrical body 3 toward the downstream side while being guided by the extending portion 31d, and the longitudinal direction of the cylindrical body 3 It is rectified to the protrusion 33d at the substantially central portion and flows toward the other end in the longitudinal direction of the cylindrical body 3.

  Next, the oil flowing to the other end side in the longitudinal direction of the cylindrical body 3 passes through the mesh part 51 from the lower side to the upper side and is filtered. And the oil which passed the said hollow part 30 passes the outflow hole 39a of the said outflow pipe 39, and is supplied to each part (not shown) of an engine.

  As described above, according to the tenth embodiment of the present invention, even if the oil strainer 1 has a long cylindrical shape, the filter 5 is provided only on the other end side in the longitudinal direction of the cylindrical body 3. The mesh portion 51 of the filter 5 extending along the longitudinal direction of the filter 5 is shortened, and the rigidity of the filter 5 itself can be increased while sufficiently retaining the filtering function. Further, since the mesh part 51 is shortened in the longitudinal direction of the oil strainer 1 and the extension part 31d is formed along the mesh part 51, the oil is guided to the extension part 31d so that the oil This reduces the flow resistance of the oil and allows oil to flow smoothly.

  Moreover, since the cross-sectional area of the cylindrical body 3 becomes small in the longitudinal direction one end side where the filter 5 of the cylindrical body 3 is not arrange | positioned, the shape of the oil strainer 1 can be made compact, and a layout design at the time of installation Increased freedom.

  Further, when the oil strainer 1 is assembled, the protruding portion 33d supports the outer periphery of the filter 5 that is not sandwiched between the first half 31 and the second half 33, so that the filter 5 is attached to the oil strainer. 1 can be firmly fixed.

  In addition, since the protruding portion 33d rectifies the oil flowing through the hollow portion 30, the oil flow resistance can be reduced and the oil can flow smoothly.

  FIG. 17 shows a first modification of the tenth embodiment of the present invention. The first modification is different from the tenth embodiment described in detail above in the following points. That is, the filter 5 of Modification 1 is formed in a substantially oval shape that is wide in the width direction of the cylindrical body 3 in plan view, and the filtration area of the mesh part 51 is substantially the same as the filter 5 of the tenth embodiment. It has become. The cylindrical body 3 is deformed so as to correspond to the shape of the filter 5. Therefore, in the first modification of the tenth embodiment, the size of the oil strainer 1 in the longitudinal direction is shortened by the amount that the filter 5 is widened in the width direction of the cylindrical body 3, and the entire oil strainer 1 is made compact. Can do.

FIG. 18 shows a second modification of the tenth embodiment of the present invention. The second modification is different from the tenth embodiment described in detail above in the following points. That is, in the second modification, a part of one end side in the longitudinal direction of the cylindrical body 3 is deformed upward in a stepped shape, and the inner surface of the deformed portion of the second half 33 is formed on the first half 31. It extends along the open surface. Accordingly, even in a place where there is almost no space inside the vehicle, the oil strainer 1 is disposed while avoiding the parts and the like by disposing the parts and the like on the stepped portion of the cylindrical body 3. can do.
<< Embodiment 11 of the Invention >>
19 and 20 show an oil strainer 1 according to an eleventh embodiment of the present invention. In the eleventh embodiment, the filter 5 without the non-mesh portion 53 is disposed only on the upstream side of the cylindrical body 3, and the partial structure of the cylindrical body 3 is changed accordingly. Since only the difference from the tenth embodiment is the same as the tenth embodiment, only the portions different from the tenth embodiment will be described in detail below.

  One end side in the longitudinal direction of the second halved body 33 has a concave cross section having an open end on the upper side, and an extended portion 33e extending outwardly on the other end in the longitudinal direction is formed on the open end edge. Is formed. The extending portion 33e constitutes the oil non-permeable region of the present invention, and is continuous with the filter surface of the filter 5 fitted to the filter fitting portion 33b inside the open end edge.

  A projecting portion 31e projecting toward the continuous portion of the peripheral edge of the filter 5 with the extending portion 33e is formed at a substantially central portion in the longitudinal direction of the first half body 31, and the projecting portion 31e is a plate. The surface has a plate shape that follows the flow of oil flowing through the hollow portion 30, and the tip of the plate contacts the periphery of the filter 5.

  Next, the flow of oil in the oil strainer 1 will be described.

  The oil sucked into the hollow portion 30 from the inflow hole 37a is first filtered through the mesh portion 51 of the filter 5 from the lower side to the upper side. Then, the oil that has passed through the mesh part 51 is rectified to the protruding part 31 e at the substantially central part in the longitudinal direction of the cylindrical body 3 and flows toward the other longitudinal end of the cylindrical body 3. Thereafter, the oil that has flowed to the other end in the longitudinal direction of the cylindrical body 3 is guided by the extending portion 33e and flows downstream of the hollow portion 30, and passes through the outflow hole 39a of the outflow pipe 39. Then, it is supplied to each part (not shown) of the engine.

  As described above, according to the eleventh embodiment of the present invention, even if the filter 5 is disposed only on the upstream side of the cylindrical body 3, the same effect as in the tenth embodiment can be obtained.

FIG. 21 shows a first modification of the eleventh embodiment of the present invention. The first modification is different from the eleventh embodiment described above in detail. That is, in the first modification, a part of the other end in the longitudinal direction of the cylindrical body 3 is deformed downward in a step shape, and the inner surface of the deformed portion of the first half 31 is the second half 33. Extending along the open surface. Therefore, even in a place where there is almost no space inside the vehicle, the oil strainer 1 is arranged while avoiding the parts by arranging the parts or the like in the stepped portion of the cylindrical body 3. be able to.
<< Embodiment 12 of the Invention >>
FIG. 22 shows an oil strainer 1 according to a twelfth embodiment of the present invention. In the twelfth embodiment, the filter 5 without the non-mesh portion 53 is disposed only at the substantially central portion in the longitudinal direction of the cylindrical body 3, and the partial structure of the cylindrical body 3 is changed accordingly. However, only the differences from the tenth and eleventh embodiments are the same as the tenth and eleventh embodiments. Therefore, only the differences from the tenth and eleventh embodiments will be described in detail below.

  A portion from the substantially longitudinal center of the first half 31 to the other end has a concave cross section having an open end below, and the open end extends outward on one end in the longitudinal direction. An extending portion 31f is formed. The extending portion 31f constitutes the oil non-permeable region of the present invention, and is continuous with the filter surface of the filter 5 fitted to the filter fitting portion 31b inside the open end edge.

  Further, a projecting portion 31g projecting downward is formed on the other side of the central portion of the first half 31 in the longitudinal direction, and the tubular body 3 is formed at the projecting end of the projecting portion 31g. A step portion 31h is formed on one end side in the longitudinal direction.

  When the filter 5 is fitted to the filter fitting portion 31b and the step portion 31h, the filter surface of the filter 5 is along the open surface of the first half body 31.

  The portion from the center in the longitudinal direction to the one end of the second half-divided body 33 has a concave cross section having an open end on the upper side, and the open end extends to the outside on the other end side in the longitudinal direction. A protruding portion 33f is formed. The extending portion 33 f constitutes the oil non-permeable region of the present invention and is continuous with the filter surface of the filter 5.

  A protrusion 33g that protrudes upward is formed on one side of the central portion in the longitudinal direction of the second halved body 33, and the plate surface of the protrusion 33g flows through the hollow portion 30. It is plate-shaped along the oil flow.

  And in the state which assembled the said 1st half 31 and the 2nd half 33, the longitudinal direction other end side of the open end of the said 2nd half 33 is the front-end | tip of the said protrusion 31g, and the filter 5 periphery. It contacts the other longitudinal end.

  Further, the tip of the protruding portion 33g comes into contact with one end in the longitudinal direction of the periphery of the filter 5.

  Next, the flow of oil in the oil strainer 1 will be described.

  The oil sucked into the hollow portion 30 from the inflow hole 37a first flows along one end in the longitudinal direction of the cylindrical body 3 toward the downstream side of the hollow portion 30 while being guided by the extending portion 31f. 3 is rectified to the protrusion 33 g just before the substantially central portion in the longitudinal direction of 3, and flows to the substantially longitudinal center of the cylindrical body 3.

  Next, the oil that has flowed up to substantially the center in the longitudinal direction of the cylindrical body 3 passes through the mesh part 51 from the lower side to the upper side and is filtered.

  Thereafter, the oil that has passed through the mesh portion 51 is rectified to the protruding portion 31g and flows to the other end in the longitudinal direction of the tubular body 3 at a location beyond the substantially central portion in the longitudinal direction of the tubular body 3.

  The oil that has flowed to the other end in the longitudinal direction of the cylindrical body 3 is guided by the extending portion 33f to flow downstream of the hollow portion 30, and passes through the outflow hole 39a of the outflow pipe 39. The engine is supplied to each part (not shown) of the engine.

  Therefore, according to the twelfth embodiment of the present invention, even if the filter 5 is disposed only at the substantially central portion in the longitudinal direction of the cylindrical body 3, the same effects as those of the tenth and eleventh embodiments can be obtained.

  In addition, although the said oil strainer 1 which concerns on an engine was demonstrated in the said Embodiments 1-12, you may provide the said oil strainer 1 in power devices, such as a transmission, for example.

  The present invention is suitable, for example, for an oil strainer that removes impurities from oil circulating inside a power unit in a vehicle.

DESCRIPTION OF SYMBOLS 1 Oil strainer 3 Cylindrical body 3a, 31c, 33c Curved part 5 Filter 30 Hollow part 31 1st half body 31b, 33b Filter fitting part 31d, 31f, 33e, 33f Extension part (oil non-permeable area)
31e, 31g, 33d, 33g Protruding part 33 Second half 35 Outer cylinder part 37a Inflow hole 39a Outflow hole 51 Mesh part 53, 53a Non-mesh part (oil non-permeation region)
55 Inner tube

Claims (6)

A cylindrical body (3) comprising a first half (31) and a second half (33) having a concave cross section;
A plate filter (5) having a mesh part (51) for filtering oil;
In the cylindrical body (3), the open ends of the first half (31) and the second half (33) are aligned, and the filter (5) is sandwiched integrally between them. By wearing, a hollow part (30) through which oil passes is formed, and an inflow hole (37a) through which oil flows into the hollow part (30) is formed at one end, and the oil is formed at the other end. An oil strainer is formed in which an outflow hole (39a) is formed to flow out from the hollow portion (30), and oil passing through the hollow portion (30) is filtered through the mesh portion (51) of the filter (5),
At least one of the inner surface of the cylindrical body (3) and the filter (5) is connected to the mesh part (51), and oil non-permeable regions (31d, 31f for guiding oil from the upstream side to the downstream side). , 33e, 33f, 53, 53a). The oil strainer according to claim 1,
The middle part of the cylindrical body (3) is provided with curved parts (3a, 31c, 33c),
The oil non-permeable region (31d, 31f, 33e, 33f, 53, 53a) is provided at a position corresponding to the curved portion (3a, 31c, 33c) of the filter (5). Oil strainer. The oil strainer according to claim 1,
The oil non-permeable region (31d, 31f, 33e, 33f, 53, 53a) is located outward from the open edge of one of the first half (31) and the second half (33). And an oil strainer characterized in that it is flush with the filter (5). The oil strainer according to claim 3,
One of the first half (31) and the second half (33) is provided with filter fitting portions (31b, 33b) capable of fitting the periphery of the filter (5),
One of the first half (31) and the second half (33) has an oil non-permeable region (31d, 31f, 33e, 33f, 53, 53a) at the periphery of the filter (5). The oil strainer is characterized in that a protruding portion (31e, 31g, 33d, 33g) is formed which protrudes toward the continuous portion and the tip of which contacts the periphery of the filter (5). The oil strainer according to claim 4,
The protrusion (31e, 31g, 33d, 33g) has an oil strainer characterized in that the plate surface has a plate shape along the flow of oil. The oil strainer according to claim 1,
The inflow hole (37a) is supported via an outer cylinder part (35) projecting downward from one end of the cylindrical body (3), and one end of the filter (5) via a connecting part (57). The inner cylinder part (55) is inserted into the outer cylinder part (35) and the lower end edge projects downward from the lower end edge of the outer cylinder part (35), and
The inner cylinder part (55) is displaced upward when the connecting part (57) is deformed or broken by a load from below,
The oil non-permeable region (31d, 31f, 33e, 33f, 53, 53a) is disposed at a position corresponding to the upper side of the inflow hole (37a) of the filter (5). .

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