JP2018204696A - Gasket with filter - Google Patents

Abstract

To provide a gasket with a filter which enables easy handling.SOLUTION: A gasket 1 with a filter includes: a loop-like contact member 4 which contacts with a shaft in a sealing manner; and a plate 6 which is fixed to the contact member at its inner edge. The plate includes: a flat-plate-like filter 10 in which a mesh is formed; a flat-plate-like outer edge part 12 located at the outer side of the filter and disposed on a flat surface different from a flat surface on which the filter is disposed; and an inclined part 14 which is disposed between the filter and the outer edge part and inclines relative to the flat surface on which the filter is disposed. In the contact member, multiple protrusions 4B protruding in a direction perpendicular to the flat surface on which the filter is disposed are provided at a spacing from one another.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gasket with a filter.

  A gasket having a mesh, that is, a filter is attached to the inside of a pipe through which a fluid passes, and foreign matter (for example, dust and impurities) inside the pipe is filtered (for example, Patent Document 1).

JP 2002-39394 A

  The filter used for the gasket is preferably as thin as possible. However, it is desirable that a gasket having a thin filter can be easily handled.

  Then, an object of this invention is to provide the gasket with a filter which can make it easy to handle.

  One aspect of the gasket with a filter according to the present invention includes a loop-shaped contact member that is hermetically contacted with a shaft, and a plate having an inner edge fixed to the contact member, and the plate is a flat plate having a mesh formed thereon. A filter, a flat outer edge disposed outside the filter and disposed in a plane different from the plane where the filter is disposed, and the filter is disposed between the filter and the outer edge. The contact member is provided with a plurality of protrusions protruding in a direction perpendicular to the plane on which the filter is disposed, spaced apart from each other.

  In this aspect, since the plate has an inclined portion that connects the flat filter and the flat outer edge, it is possible to increase the bending rigidity of the filter-equipped gasket even when the plate is thin. . For this reason, the unexpected deformation | transformation of the gasket with a filter is suppressed, and it is possible to make the handling easy. Further, the plurality of protrusions provided at intervals from each other prevents or suppresses the sticking of the gasket to the structure to which the gasket is attached. Further, these protrusions prevent or suppress sticking of gaskets to each other when the gaskets are stacked, for example, in the manufacturing process, transport process or installation process of the gasket with filter.

  Preferably, unevenness is formed on an end surface of the protrusion. These minute irregularities are useful for preventing or suppressing the sticking of the gasket to the structure to which the gasket is attached, and for preventing or suppressing the sticking of the gaskets to each other.

  Preferably, a loop portion is disposed at a portion of the plate between the filter and the inclined portion, and the loop portion and the plate are integrally formed and are perpendicular to a plane on which the filter is disposed. A plurality of protrusions protruding in a certain direction are formed integrally with the loop portion at intervals. In this case, in addition to the protrusion provided on the contact member, the protrusion provided on the loop portion prevents or suppresses the sticking of the gasket to the structure. Prevent or suppress sticking. Further, since the loop portion can be formed from the same material as the plate, it is possible to reduce the manufacturing cost.

  Another aspect of the gasket with a filter according to the present invention includes a loop-shaped contact member that is in sealing contact with a shaft, a plate having an inner edge fixed to the contact member, and a loop portion fixed to the plate. The plate includes a flat plate-like filter in which a mesh is formed, a flat plate-like outer edge portion that is outside the filter and is arranged on a plane different from the plane on which the filter is arranged, and the filter and the outer edge portion. And an inclined portion that is inclined with respect to a plane on which the filter is disposed, and the loop portion is fixed to a portion of the plate between the filter and the inclined portion, and the contact At least one of the member and the loop portion is provided with a plurality of protrusions that protrude in a direction perpendicular to the plane on which the filter is disposed.

  In this aspect, since the plate has an inclined portion that connects the flat filter and the flat outer edge, it is possible to increase the bending rigidity of the filter-equipped gasket even when the plate is thin. . For this reason, the unexpected deformation | transformation of the gasket with a filter is suppressed, and it is possible to make the handling easy. Further, the plurality of protrusions provided at intervals from each other prevents or suppresses the sticking of the gasket to the structure to which the gasket is attached. Further, these protrusions prevent or suppress sticking of gaskets to each other when the gaskets are stacked, for example, in the manufacturing process, transport process or installation process of the gasket with filter.

It is sectional drawing which shows the gasket with a filter concerning embodiment of this invention. It is a figure which shows the use condition of the gasket with a filter of FIG. It is a top view of the gasket with a filter of FIG. It is a bottom view of the gasket with a filter of FIG. It is an expanded sectional view of the contact member of the gasket with a filter of FIG. It is an expanded sectional view of the loop part of the gasket with a filter of FIG. It is a figure which shows the state which piled up the several gasket with a filter of FIG. It is a figure which shows the state which piled up the multiple gasket with a filter of the modification.

  Embodiments according to the present invention will be described below with reference to the accompanying drawings.

  The filter-equipped gasket according to the embodiment of the present invention is used, for example, in a continuously variable transmission (CVT) for automobiles, a brake control valve for railway vehicles, and a fuel supply pipe connected to a fuel injection device for automobiles. It is not limited to these uses.

  As shown in FIGS. 1 and 2, the filter-equipped gasket 1 according to the embodiment of the present invention is in contact with a circular loop contact member 4 that is in sealing contact with a fixed cylindrical shaft (for example, a boss) 2. A plate 6 having an inner edge fixed to the member 4 and a loop portion 8 fixed to the plate 6 are provided. The plate 6 includes a flat plate-like filter (screen) 10 formed with a mesh, a flat plate-like outer edge portion 12 arranged on a plane different from the plane on which the filter 10 is arranged outside the filter 10, and the filter 10 and an outer edge portion 12, and an inclined portion 14 that is inclined with respect to a plane on which the filter 10 is disposed.

  1 and 2 show only the left side portion of the gasket 1 with a filter. As shown in FIGS. 3 and 4, the plate 6 has a circular outline and is arranged concentrically with the contact member 4. The filter 10, the outer edge portion 12, and the inclined portion 14 of the plate 6 are arranged concentrically with each other. The loop portion 8 is also arranged concentrically with these. 1 and 2 show these common axes C. FIG.

  In this embodiment, the shaft 2 does not rotate or linearly move after installation, and the contact member 4 is in close contact with the outer peripheral surface of the shaft 2 without moving relative to the shaft 2. The contact member 4 is formed of an elastic body, for example, an elastomer. The contact member 4 is formed with a lip 4 </ b> A that is in close contact with the outer circumferential surface of the shaft 2. FIG. 2 shows a state where the lip 4A is not in contact with the shaft 2. When the lip 4A comes into contact with the shaft 2, the lip 4A is elastically deformed.

  The plate 6 is formed of a rigid body such as metal or resin. A large number of through holes are formed in the filter 10 of the plate 6. The through hole can be formed by, for example, pressing or etching. 3 and 4, the hatched lines indicate the mesh portion of the filter 10. However, the shape of the through hole is not shown in FIGS.

  The inner edge of the filter 10 is fixed to the contact member 4. The fixing method is not limited, but for example, the following method may be used. As shown in FIG. 5, a plurality of through holes 10 </ b> A are formed on the inner edge of the filter 10. The through holes 10A are arranged at equiangular intervals, for example. Further, a bent portion 10B is formed at the innermost edge of the filter 10 by press working. The inner edge of the filter 10 is placed in a press mold, and the contact member 4 is press-molded so that the elastomer as the material of the contact member 4 covers the inner edge of the filter 10 including the bent portion 10B and enters the through hole 10A. To do. The elastomer covers the inner edge of the filter 10, and the elastomer on both sides of the filter 10 is connected through the through hole 10 </ b> A, so that the filter 10 is firmly fixed to the contact member 4.

  The loop portion 8 is an annular member and is formed of an elastic body, for example, an elastomer. The loop portion 8 is fixed to a portion of the plate 6 between the filter 10 and the inclined portion 14 and is disposed on both surfaces of the plate 6.

  The method of fixing the loop unit 8 is not limited, but may be the following method, for example. As shown in FIGS. 1 and 2, there is an extension 16 in the same plane as the filter 10 between the filter 10 and the inclined portion 14. The inclined portion 14 connects the extension portion 16 and the outer edge portion 12. As shown in FIG. 6, the extension 16 has a plurality of through holes 16 </ b> A. The through holes 16A are arranged at equiangular intervals, for example. The plate 6 is placed in a press mold, and the loop portion 8 is press-molded so that the elastomer that is the material of the loop portion 8 enters the through hole 16A. The loop portion 8 is firmly fixed to the plate 6 by connecting the elastomers on both sides of the extension portion 16 through the through hole 16A.

  As shown in FIGS. 4 to 6, the contact member 4 is provided with a plurality of protrusions 4 </ b> B protruding in a direction perpendicular to the plane on which the filter 10 is arranged, spaced from each other. In addition, a plurality of protrusions 8A protruding in a direction perpendicular to the plane on which the filter 10 is disposed are provided at intervals. As shown in FIG. 4, the four protrusions 4B are arranged at equiangular intervals and the four protrusions 8A are arranged at equiangular intervals, but the number and arrangement of the protrusions are not limited to those shown in the figure. Further, the shape of the protrusion is not limited to the illustration.

  As shown in FIG. 2, the filter-equipped gasket 1 is used in a state where the outer edge portion 12 of the plate 6 is joined to the structure S. In FIG. 2, arrows indicate the direction in which a fluid, for example, oil flows. The filter 10 filters foreign matters (for example, dust and impurities) in the fluid. The liquid that has passed through the filter 10 passes through the gap between the shaft 2 and the structure S.

  In this embodiment, since the plate 6 has the inclined portion 14 that connects the flat filter 10 and the flat outer edge portion 12, the bending of the gasket 1 with the filter is possible even when the plate 6 is thin. It is possible to increase the rigidity. For this reason, the unexpected deformation | transformation of the gasket 1 with a filter is suppressed, and it is possible to make the handling easy.

  Further, even if the plate 6 is greatly deformed by the force of the fluid, the plurality of protrusions 4B and 8A arranged at equal intervals cause the surface contact of the contact member 4 and the loop portion 8 to the structure S to which the gasket 1 is attached. Is prevented and sticking to these structures S is prevented or suppressed. Even if the plurality of protrusions 8A come into contact with the structure S, the fluid can pass between the protrusions 8A.

  Further, these protrusions 4B and 8A prevent the gaskets 1 from sticking to each other when the gaskets 1 are stacked as shown in FIG. 7 in the manufacturing process, transport process or installation process of the gasket 1 with a filter, for example. Or suppress.

  It is preferable that minute irregularities (for example, dot patterns) are formed on the end surfaces of these protrusions 4B and 8A (that is, the surfaces that come into contact with other gaskets 1 when the gaskets 1 are stacked). These minute irregularities are useful for preventing or suppressing the sticking of the gasket 1 to the structure S to which the gasket 1 is attached, and for preventing or suppressing the sticking of the gaskets 1 to each other.

Although the embodiment of the present invention has been described above, the above description is not intended to limit the present invention, and various modifications including deletion, addition, and replacement of components are included in the technical scope of the present invention. Conceivable.

  For example, as in the modification shown in FIG. 8, the protrusions 4C and 8B may be provided on the opposite side of the protrusions 4B and 8A. Both the protrusions 4A and 4B may be provided on the contact member 4, or both the protrusions 8A and 8B may be provided on the loop portion 8.

  In the above-described embodiment, the protrusion is provided on both the contact member 4 and the loop portion 8, but the protrusion may be provided on one of the contact member 4 and the loop portion 8. Furthermore, the loop portion 8 itself may not be provided.

  In the above embodiment, the loop portion 8 and the plate 6 are separate members formed from different materials. However, the loop portion 8 and the plate 6 may be integrally formed from, for example, resin, and the protrusion 8A (and / or 8B) may be integrally formed with the loop portion 8. In this case, since the loop portion 8 can be formed from the same material as the plate 6, it is possible to reduce the manufacturing cost.

  In the above embodiment, the cross section of the shaft 2, the shape of the contact member 4, the shape of the loop portion 8, the contour of the plate 6, and the contour of each part constituting the plate 6 are circular, but these shapes are circular. For example, it may be a rectangle or a square.

DESCRIPTION OF SYMBOLS 1 Gasket with filter 2 Shaft 4 Contact member 4A Lip 4B, 4C Protrusion 6 Plate 8 Loop part 8A, 8B Protrusion 10 Filter 12 Outer edge part 14 Inclination part 10A Through-hole 10B Bending part 16 Extension part 16A Through-hole S Structure

Claims (3)

A loop-shaped contact member in sealing contact with the shaft;
A plate having an inner edge fixed to the contact member;
The plate is
A flat filter with a mesh formed;
A flat outer edge located outside the filter and disposed in a plane different from the plane where the filter is disposed;
An inclined portion interposed between the filter and the outer edge portion and inclined with respect to a plane on which the filter is disposed;
A gasket with a filter, wherein the contact member is provided with a plurality of protrusions that protrude in a direction perpendicular to a plane on which the filter is disposed.   The gasket with a filter according to claim 1, wherein unevenness is formed on an end surface of the protrusion.   A loop portion is disposed in a portion of the plate between the filter and the inclined portion, and the loop portion and the plate are integrally formed, and in a direction perpendicular to a plane on which the filter is disposed. The gasket with a filter according to claim 1 or 2, wherein a plurality of protruding protrusions are formed integrally with the loop portion at intervals.

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