JPH0814393A - Gasket - Google Patents

Abstract

PURPOSE:To eliminate the need to provide storage recesses for storing projections to the mating component of a gasket, which has a plate provided with an opening with a sealing portion provided on the edge of the opening, so as to reduce the amount of work required to machine the mating component, and to prevent the sealing portions from sticking together when a plurality of gaskets are stacked. CONSTITUTION:A plate 1 is provided with insertion space 8, and a projection 9 which is separated from the plate 1 and projects in the direction of the thickness of the plate 1 is inserted into the insertion space 8 and is provided with elasticity with which it is embedded in time insertion space 8 when exerted with a pressing load equal to or greater than a predetermined value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket which is a kind of sealing device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, a plate 1 made of a rigid material is provided with an opening 2 serving as a passage for a fluid.
There is known a gasket in which a seal portion 3 made of a rubber-like elastic material is provided on the periphery of the opening 2. This gasket is manufactured as follows. That is, first, the plate 1 is molded independently, and then the seal portion 3 is vulcanized and adhered to the periphery of the opening 2 of the plate 1. Then, as a part of this vulcanization adhesion, the plate 1 is dipped in an adhesive (liquid), but when a plurality of plates 1 are overlaid and dipped, the flat plates 1 stick to each other, and they are difficult to peel off. Become.

Therefore, conventionally, as shown in FIG. 8, a projection 4 is integrally formed in advance on the plate 1 and the projection 4 acts as a spacer to prevent the plates 1 from sticking to each other. This conventional technique has the following problems.
That is, when mounting this type of gasket,
As shown in FIG. 9, this is sandwiched between the two mating parts 5 and 6, but if the plate 1 is provided with the projection 4, it is made of a rigid material, The mating part 5 must be provided with an accommodating recess 7 for accommodating the protrusion 4. As a result, extra work is required to process the mating component 5.

The projection 4 is formed by pressing, but the height h ₁ cannot be increased too much due to the relationship with the thickness w ₁ of the plate 1. On the other hand, the thickness w ₂ of the seal portion 3 is thicker than the thickness w ₁ of the plate 1. Therefore, in the finished gasket, the height h ₂ of the seal portion 3 is often higher than the height h ₁ of the protrusion portion 4. When a plurality of such gaskets are stacked, the seal portions 3 are separated from each other. May stick.

[0005]

SUMMARY OF THE INVENTION In view of the above points, the present invention does not require a recess for accommodating a mating component while having the above-mentioned spacer acting as a spacer, thus requiring extra labor for machining the mating component. The purpose is to provide a gasket that does not have. In addition, it is another object of the present invention to provide a gasket that acts as a spacer as described above, but the height of the spacer is not limited, and the seal portions do not stick to each other when stacked.

[0006]

In order to achieve the above object, the gasket of the present invention is provided with an opening in a plate,
In the gasket provided with a seal portion on the periphery of the opening, an insertion space is provided in the plate, and the insertion space,
A protrusion protruding in the thickness direction of the plate is inserted, and the protrusion is provided with elasticity that is embedded in the insertion space when a pressing load having a magnitude greater than a predetermined value is applied. . The protrusion inserted into the insertion space is different from the plate, and is made of resin or rubber-like elastic material having appropriate elasticity, while the plate is made of a rigid material.

[0007]

[Operation] When the plate is dipped in the adhesive as a part of vulcanization adhesion, the pressing load does not act on the plate, but when the finished gasket is sandwiched between the two mating parts, the mating part should be sealed. In order to bring them into close contact with each other, the gasket and the mating component are bolted in the stacking direction, and a pressing load in the thickness direction acts on the plate. The present invention was devised with this point in mind, and acts as follows depending on the presence or absence or the magnitude of the pressing load. That is, when the plate is immersed in the adhesive as part of the vulcanization adhesion, the protrusion is not buried in the insertion space because the pressing load is less than the predetermined value, and thus the protrusion between the plate and the plate is not formed. Acts as a spacer. On the other hand, when the gasket is sandwiched between the two mating parts, since the pressing load is greater than or equal to the predetermined value, the projection body is buried in the insertion space, and thus the projection body is housed in the mating part. It is not necessary to provide a housing recess for storing. The predetermined value of the pressing load is set appropriately at the boundary of this action.

Further, in the gasket of the present invention having the above structure, the projection is molded separately from the plate and is inserted into the insertion space after molding. Therefore, the protrusion can be formed into an arbitrary shape, and the protrusion can be higher than the seal portion.

[0009]

Next, an embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, an opening 2 is provided and a sealing portion 3 made of a rubber-like elastic material is provided around the opening 2.
A through hole-like insertion space 8 is formed in a rigid plate 1 provided with
Are provided in a required number (four in the figure, but the number is not limited), and each of the insertion spaces 8 has a protrusion 9 made of resin or rubber-like elastic material having a predetermined elasticity.
Is inserted.

In each of the projections 9, a substantially barrel-shaped projection body 11 is arranged at the center of the annular mounting portion 10, and the mounting portion 10 and the main body 11 are connected via an annular connecting portion 12. It has a shape and is mounted on the plate 1 by engaging an annular engaging concave portion 13 provided on the outer peripheral surface of the mounting portion 10 with an annular engaging convex portion 14 provided on the inner wall of the insertion space 8. ing. The insertion space 8 and the projection 9 are formed in the plate 1
Is symmetrical in the thickness direction, that is, vertically. In the mounted state shown in FIG. 1 and FIG. 2, the protrusion body 11 projects above and below the plate 1 and the connecting portion 1
Above and below 2, there are provided annular space portions 15 which serve as escape spaces when the projection body 11 elastically deforms. In addition to the opening 2 and the insertion space 8, the plate 1 is provided with a required number of bolt holes 16.

When manufacturing the gasket having the above-mentioned structure, the plate 1 is immersed in the adhesive as a part of the vulcanization adhesion in the same manner as in the above-mentioned conventional example. At this time, a load for pushing the protrusion main body 11 is particularly applied. It doesn't work from anywhere. Therefore, since the pressing load is less than the predetermined value, the projection body 11 is not buried in the insertion space 8 and acts as a spacer between the plates 1. Therefore, it is possible to prevent the plates 1 from sticking to each other. On the other hand, when the gasket is sandwiched between the two mating parts 5 and 6, a large pressing load acts due to bolting or the like. Therefore, since the pressing load becomes a predetermined value or more, the protrusion body 11 is embedded in the insertion space 8. Therefore, the mating part 5 is attached to the protrusion body 1
It is not necessary to provide a housing recess for housing 1 and the labor for processing the mating component 5 can be reduced by this amount (see FIG. 5).

In the above gasket, the protrusion 9
Is molded separately from the plate 1, and is inserted into the insertion space 8 after molding. Therefore, the protrusion 9 can be formed into an arbitrary shape, and the height h ₃ of the protrusion can be made higher than the height h ₂ of the seal portion 3, and the gasket can be It is possible to prevent the seal portions 3 from contacting and sticking to each other when a plurality of layers are stacked (see FIG. 4).

[0014]

The present invention has the following effects.

That is, the projection inserted into the insertion space of the plate acts as a spacer without being buried in the insertion space when the adhesive is immersed, and is buried in the insertion space during mounting so as not to interfere with the mounting. In addition, it is not necessary to provide an accommodating recess for accommodating the protrusion in the mating component to be mounted. Therefore, the time and labor required for machining the mating component can be reduced accordingly. In addition, since the height of this protrusion, which is molded separately from the plate, can be freely set, it is possible to prevent the seal portions from contacting and sticking to each other when a plurality of gaskets are stacked. it can.

[Brief description of drawings]

FIG. 1 is a plan view of a gasket according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line AA in FIG.

FIG. 3 is a sectional view of an essential part showing a method for manufacturing the gasket.

FIG. 4 is a cross-sectional view of essential parts showing a laminated state of the gasket.

FIG. 5 is a cross-sectional view of essential parts showing a mounted state of the gasket.

FIG. 6 is a plan view of a gasket according to a conventional example.

7 is an enlarged sectional view taken along line BB in FIG.

FIG. 8 is a sectional view of a main part of a gasket according to another conventional example.

FIG. 9 is a cross-sectional view of a main part showing a mounting state of the gasket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate 2 Opening part 3 Seal part 5,6 Mating part 8 Insertion space 9 Projection body 10 Mounting part 11 Projection body 12 Coupling part 13 Engagement concave part 14 Engaging convex part 15 Space part 16 Bolt hole

Claims (1)

[Claims] 1. An opening (2) is provided in a plate (1),
In a gasket having a seal portion (3) provided around the opening (2), an insertion space (8) is provided in the plate (1).
And a protrusion (9) protruding in the thickness direction of the plate (1) is inserted into the insertion space (8), and a pressing load of a predetermined value or more is applied to the protrusion (9). A gasket, characterized in that it is provided with elasticity to be buried in the insertion space (8) when it acts.