JP6857552B2 - Gasket with filter - Google Patents

Description

The present invention relates to a gasket with a filter.

A gasket provided with 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, impurities) inside the pipe is filtered (for example, Patent Document 1).

JP-A-2002-39394

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

Therefore, an object of the present invention is to provide a gasket with a filter that can be easily handled.

One aspect of the gasket with a filter according to the present invention includes a loop-shaped contact member that makes a sealed contact with the shaft and a plate whose inner edge is fixed to the contact member, and the plate is a flat plate on which a mesh is formed. The filter is arranged between the filter, a flat plate-shaped outer edge portion outside the filter and arranged on a plane different from the plane on which the filter is arranged, and the filter and the outer edge portion. The contact member is provided with a plurality of protrusions that project in a direction perpendicular to the plane on which the filter is arranged, at intervals from each other.

In this embodiment, since the plate has an inclined portion connecting the flat plate-shaped filter and the flat plate-shaped outer edge portion, it is possible to increase the bending rigidity of the gasket with the filter even when the plate is thin. .. Therefore, unexpected deformation of the gasket with a filter is suppressed, and it is possible to facilitate its handling. In addition, a plurality of protrusions provided at intervals from each other prevent or prevent the gasket from sticking to the structure to which the gasket is attached. Further, these protrusions prevent or prevent the gaskets from sticking to each other, for example, when the gaskets are stacked in the manufacturing process, the transporting process, or the installation process of the gasket with a filter.

Preferably, the end face of the protrusion is formed with irregularities. These minute irregularities help prevent or prevent the gasket from sticking to the structure to which the gasket is attached, and also help prevent or prevent the gasket from sticking to each other.

Preferably, a loop portion is arranged in a portion of the plate between the filter and the inclined portion, and the loop portion and the plate are integrally formed and perpendicular to the plane on which the filter is arranged. A plurality of protrusions protruding in various directions are integrally formed in the loop portion at intervals from each other. In this case, in addition to the protrusions provided on the contact member, the protrusions provided on the loop portion prevent or prevent the gaskets from sticking to the structure, and when the gaskets are stacked, the gaskets are stuck to each other. Prevent or suppress sticking. Further, since the loop portion can be formed from the same material as the plate, the manufacturing cost can be reduced.

Another aspect of the gasket with a filter according to the present invention includes a loop-shaped contact member that makes a sealing contact with the shaft, a plate whose inner edge is fixed to the contact member, and a loop portion fixed to the plate. The plate has a flat plate-shaped filter on which a mesh is formed, a flat plate-shaped outer edge portion that is outside the filter and is arranged on a plane different from the plane on which the filter is placed, and the filter and the outer edge portion. The loop portion is fixed to a portion of the plate between the filter and the inclined portion, and is provided with an inclined portion that is interposed between the filter and the inclined portion with respect to the plane on which the filter is arranged. A plurality of protrusions projecting in a direction perpendicular to the plane on which the filter is arranged are provided on at least one of the member and the loop portion at intervals from each other.

In this embodiment, since the plate has an inclined portion connecting the flat plate-shaped filter and the flat plate-shaped outer edge portion, it is possible to increase the bending rigidity of the gasket with the filter even when the plate is thin. .. Therefore, unexpected deformation of the gasket with a filter is suppressed, and it is possible to facilitate its handling. In addition, a plurality of protrusions provided at intervals from each other prevent or prevent the gasket from sticking to the structure to which the gasket is attached. Further, these protrusions prevent or prevent the gaskets from sticking to each other, for example, when the gaskets are stacked in the manufacturing process, the transporting process, or the installation process of the gasket with a filter.

It is sectional drawing which shows the gasket with a filter which concerns on embodiment of this invention. It is a figure which shows the use state 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 enlarged cross-sectional view of the contact member of the gasket with a filter of FIG. It is an enlarged cross-sectional view of the loop part of the gasket with a filter of FIG. It is a figure which shows the state in which a plurality of gaskets with a filter of FIG. 1 are stacked. It is a figure which shows the state which piled up a plurality of gaskets with a filter of a modification.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings.

The gasket with a filter according to the embodiment of the present invention is used, for example, in a continuously variable transmission (CVT) of an automobile, a brake control valve for a railroad vehicle, and a fuel supply pipe connected to a fuel injection device of an automobile. It is not limited to these uses.

As shown in FIGS. 1 and 2, the gasket 1 with a filter according to the embodiment of the present invention comes into contact with a circular loop-shaped contact member 4 that makes a sealing contact with a fixed columnar 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 has a flat plate-shaped filter (screen) 10 on which a mesh is formed, a flat plate-shaped outer edge portion 12 located on the outside of the filter 10 and arranged on a plane different from the plane on which the filter 10 is placed, and a filter. An inclined portion 14 that is interposed between the 10 and the outer edge portion 12 and is inclined with respect to the plane on which the filter 10 is arranged is provided.

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 contour 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. FIG. 1 and FIG. 2 show these common axes C.

In this embodiment, the shaft 2 does not rotate or linearly move after installation, and the contact member 4 comes into close contact with the outer peripheral surface of the shaft 2 without moving relative to the shaft 2. The contact member 4 is made of an elastic body, for example, an elastomer. The contact member 4 is formed with a lip 4A that is in close contact with the outer peripheral surface of the shaft 2 over the entire circumference. FIG. 2 shows a state in which the lip 4A is not in contact with the shaft 2, and when the lip 4A is in contact with the shaft 2, the lip 4A is elastically deformed.

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

The inner edge of the filter 10 is fixed to the contact member 4. The fixed method is not limited, but may be, for example, the following method. As shown in FIG. 5, a plurality of through holes 10A are formed on the inner edge of the filter 10. The through holes 10A are arranged at equal intervals, for example. Further, a bent portion 10B is formed on 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, which is the material of the contact member 4, covers the inner edge of the filter 10 including the bent portion 10B and penetrates into the through hole 10A. To do. The elastomer covers the inner edge of the filter 10 and the elastomers on both sides of the filter 10 are connected through the through hole 10A, 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 arranged on both sides of the plate 6.

The method of fixing the loop portion 8 is not limited, but may be, for example, the following method. As shown in FIGS. 1 and 2, there is an extension portion 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, a plurality of through holes 16A are formed in the extension portion 16. The through holes 16A are arranged at equal intervals, for example. The plate 6 is placed in a press mold, and the loop portion 8 is press-molded so that the elastomer, which is the material of the loop portion 8, penetrates into 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 4B protruding in a direction perpendicular to the plane on which the filter 10 is arranged at intervals from each other, and the loop portion 8 is provided. Also, a plurality of protrusions 8A projecting in a direction perpendicular to the plane on which the filter 10 is arranged are provided at intervals from each other. As shown in FIG. 4, the four protrusions 4B are arranged at equal intervals and the four protrusions 8A are arranged at equal intervals, but the number and arrangement of the protrusions are not limited to the illustration. Further, the shape of the protrusion is not limited to the illustration.

As shown in FIG. 2, the gasket 1 with a filter is used in a state where the outer edge portion 12 of the plate 6 is joined to the structure S. In FIG. 2, the arrows indicate the direction in which the fluid, such as oil, flows. The filter 10 filters foreign substances (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 an inclined portion 14 connecting the flat plate-shaped filter 10 and the flat plate-shaped outer edge portion 12, the gasket 1 with a filter is bent even when the plate 6 is thin. It is possible to increase the rigidity. Therefore, unexpected deformation of the gasket 1 with a filter can be suppressed, and its handling can be facilitated.

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 make surface contact of the contact member 4 and the loop portion 8 with the structure S to which the gasket 1 is attached. To prevent or prevent sticking to these structures S. Even if a 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, for example, in the manufacturing process, the transporting process or the installation process of the gasket 1 with a filter. Or suppress.

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

Modifications Although the embodiments of the present invention have been described above, the above description does not 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 modified example shown in FIG. 8, the protrusions 4C and 8B may be provided on the opposite side to 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 embodiment, the protrusions are provided on both the contact member 4 and the loop portion 8, but the protrusions may be provided on one of the contact member 4 and the loop portion 8. Furthermore, the loop portion 8 itself may not be present.

In the above embodiment, the loop portion 8 and the plate 6 are separate members made of different materials. However, the loop portion 8 and the plate 6 may be integrally formed from, for example, a 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, the manufacturing cost can be reduced.

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. It does not have to be, for example, it may be a rectangle or a square.

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 14 Inclined part 10A Through hole 10B Bent part 16 Extension 16A Through hole S structure

Claims (3)

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

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