JPS5818550B2 - Graphite Toilet Gasket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a GRAPHITE gasket.

As a gasket material, graphite exhibits excellent characteristics such as heat resistance and chemical resistance.

However, it forms hexagonal hexagonal plate-like flat crystals and is easily exfoliated, and under normal conditions it is scaly, granular, or lumpy and does not form any shape.

In practice, graphite sheets are made by pressure welding,
It is used after being punched into the desired gasket shape.

However, it was extremely inconvenient to use because it broke and peeled off during handling.

``The object of the present invention is to eliminate the above-mentioned drawbacks and to obtain a graphite-filled gasket that is easy to manufacture and handle.

That is, a gasket having a desired shape is obtained by covering and molding graphite in the form of strips.

The structure of the present invention is such that the covering member is a net, a woven fabric, a thin plate or a sheet member with a large number of holes perforated therein, and the covering member is destroyed by mechanical force, thermal action, or chemical action during use. It is characterized by using a sheet member.

Here, the covering member must have forming force, and depending on the conditions of use, shape, and size of the gasket, it is not necessarily limited to a material having m+tm such as metal, but may be a synthetic resin film or a coating film. .

Therefore, graphite, which is easily exfoliated into pieces, is molded into the covering member, making it convenient to manufacture and handle.

Furthermore, if the covering member is porous, the graphite may come out of the holes during installation and come into contact with the surface of the member to be sealed, and if it is destroyed during installation, the graphite may come into contact with the surface of the member to be sealed through the broken part. Has a unique sealing effect.

Next, a detailed explanation will be given based on the illustrated embodiment.

The embodiment shown in FIG. 1 is a ring gasket □ in which graphite 3 is surrounded by a covering member in which a large number of holes 2 are provided in a thin metal plate j.

In production, as shown in FIG. 2, the covering member can be formed into an inverted U-shaped surface, filled with graphite 3, and both open ends bent inward.

The size, shape, etc. of the hole 2 may be appropriately determined based on the design.

If it is made from a metal plate, it has excellent molding force and is convenient to handle, but a synthetic resin film or the like can also be used.

FIG. 3 shows an embodiment using a net 4 as the covering member.

In the case of this mesh covering, the gaps are uniform and numerous compared to the perforated thin plate shown in FIG. 1, and the graphite inside permeates uniformly during use, improving the sealing effect.

It can also be applied to small gaskets. The material for the net 4 is appropriately selected from metals, minerals, synthetic chemicals, vegetable fibers, etc. depending on the conditions of use.

For manufacturing purposes, a bag-shaped covering member 5 may be filled with graphite as shown in FIG. 4 and wrapped around the sealed area during use.

FIG. 5 shows an embodiment in which a U-shaped perforated thin plate 1 is stuffed with graphite 3 and a woven fabric 6 is pasted thereon.

In this case, it is easy to mold and suitable for wide gaskets.

FIG. 6 shows an embodiment in which graphite 3 is packed between the inner and outer rings 7.8 having a transverse V-shaped cross section, and nets 4 are attached to the upper and lower surfaces.

In this case, the net 4 faces the sealing surface and has good permeability, and the graphite 3 adapts to the sealing surface and performs a good sealing action.

However, since the inner and outer rings 7.8 are easily compressed and deformed by the member to be sealed, the tightening force can be small.

Of course, rings having other cross-sectional shapes that can be compressed and deformed may also be used.

9 is a holding member. Figure 7 shows cylindrical inner and outer/G10,
This is an example similar to that shown in FIG. 6, using 11.

3 is graphite.

This ring 10.11 needs to be made of a material that is easily deformable.

For example, a thin metal plate, a synthetic resin plate, etc. are suitable.

FIG. 8 shows an embodiment of a flared gasket.

For the edges of the holes 12 and 13 and for the outer frame 14, rings or frames like those shown in the embodiment shown in Figs. A coring film may be applied, but as shown in Fig. 9,
- As shown in the A-line cross section, make a mold 14, spread a synthetic resin film 15, etc., fill the concave part of the mold with graphite 3, then further spread the film 16 on top of it, and heat and press the films together or adhere them with adhesive. or coating 1
It can also be molded by 6.

When using a planar sheet film with no gaps or coating it, the covering member must be able to be destroyed by mechanical, chemical, or thermal action during use.

The present invention has the following unique effects.

Since the present invention produces a graphite-containing gasket by covering and molding graphite, it is easier to manufacture than the conventional method in which graphite strips are crimped to form a sheet and then punched. graphite can be used directly.

The graphite does not peel off during handling and maintains its initial shape, which is convenient.

During use, graphite permeates through the covering member or breaks the covering member, and directly contacts and adapts to the surface to be sealed, providing the same sealing effect as a gasket made of graphite alone.

Furthermore, by using a synthetic resin film or coating it, it is possible to mold extremely fine graphite-containing gaskets, and the range of applications of graphite-containing gaskets can be significantly expanded.

[Brief explanation of the drawing]

Fig. 1 is a partially sectional plan view of an embodiment using a perforated thin plate covering member, Fig. 2 is a partial sectional view showing one manufacturing process of the embodiment of Fig. 1, and Fig. 3 is a net or woven A plan view showing a cross section of a part of an embodiment using a cloth covering member, FIG. 4 is a perspective view of an embodiment using a bag-shaped covering member, and FIG. 5 shows a covering member made of a perforated thin plate and woven fabric. 6.1 is a partial sectional view of an embodiment using a covering member consisting of an inner and outer ring and a net, FIG. 8 is a sectional view of an embodiment using a wide gasket, and FIG. 9 is a partial sectional view taken along the line A--A in FIG. 8, showing one manufacturing process of the gas Kate shown in FIG. 1: Perforated thin plate, 2: Hole, 3: Graphite, 4: Net, 5
: Bag-shaped covering member, 6: Woven fabric, 7, 8: V-shaped cross-sectional area ring, 10, 11: Cylindrical ring, 12.13: Hole, 1
4: Mold, 15: Planar sheet, 16: Coating film.

Claims (1)

[Claims] 1. Graphite-containing material formed by covering and molding graphite with a covering member that is porous or that is destroyed during installation so that when the graphite is installed between the members to be sealed, the graphite comes into contact with the surface of the member to be sealed. gasket. “