JP2003130220A - Spiral gasket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spiral gasket allowing the easy and strong fitting of the outer peripheral edge of an inner ring member and the inner peripheral edge of an outer ring member into the inner peripheral edge of a gasket body and the outer peripheral edge of the gasket body, respectively. SOLUTION: The inner peripheral edge of the gasket body and the outer peripheral edge of the inner ring member are fitted by fitting a projecting member mounted at the outer peripheral edge of the inner ring member into a recessed part formed at the inner peripheral edge of the gasket body. The outer peripheral edge of the gasket body and the inner peripheral edge of the outer ring member are fitted by fitting a projecting member or a recessed member mounted at the inner peripheral edge of the outer ring member into a projecting part formed at the outer peripheral edge of the gasket body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral type gasket, and more particularly to a gasket used for a complicated sealing portion such as a flange joint having a complicated shape and industrial equipment.

[0002]

2. Description of the Related Art Conventionally, a spiral gasket has a structure as shown in FIG. That is, the conventional spiral gasket 100 is formed by stacking a flexible tape 102 made of asbestos, graphite, ethylene tetrafluoride resin or the like and a thin metal tape 104 having a V-shaped cross-section, and spirally winding them. The gasket main body 106 is formed by winding the beginning and the end of the winding with only the metal tape 104 for 2 to 3 rounds and fixing them by spot welding or the like.

An inner ring member 110 made of an annular metal plate is fixed to the inner peripheral edge 108 of the gasket body 106 as a guide member by fitting. Further, an outer ring ring member 114 made of an annular metal plate is fixed as a guide member to the outer peripheral edge 112 of the gasket body 106 by fitting.

In this case, the one having only the inner ring ring member 110 is the spiral gasket with the inner ring, and the one having only the outer ring ring member 114 is the spiral gasket with the outer ring, the inner ring ring member 110 and the outer ring ring member 11.
The one having both 4 is called a spiral gasket with inner and outer rings.

[0005]

In this case, the inner peripheral edge 108 of the gasket body 106 has a V-shaped cross section and is formed into a recess 10.
8a is formed, the outer peripheral edge 110a of the inner ring member 110 is replaced by the inner peripheral edge 1 of the gasket body 106.
No. 08 corresponding to the concave portion 108a has a V-shaped cross section.
10b is formed and fitted.

Further, the outer peripheral edge 11 of the gasket body 106
In No. 2, since the convex portion 112a is formed in a V-shaped cross section, the inner peripheral edge 114a of the outer ring member 114 has a V-shaped cross section corresponding to the convex portion 112a of the outer peripheral edge 112 of the gasket body 106. The recess 114b is formed and fitted. Thus, the outer peripheral edge 1 of the inner ring member 110
10a has a V-shaped convex portion 110b and the outer ring member 114 has an inner peripheral edge 114a having a V-shaped concave portion 1.
14b to form these inner ring members 11
0, after punching the outer ring member 114 from the steel plate,
The outer peripheral edge 110a and the inner peripheral edge 114a had to be machined by cutting.

For this reason, since such a cutting process is required, a special jig is required, and it is difficult to meet the demand fluctuation. In view of such circumstances, the present invention, as in the prior art, without cutting the outer peripheral edge of the inner ring member, the inner peripheral edge of the outer ring member, the outer peripheral edge of the inner ring member to the inner peripheral edge of the gasket body, An object of the present invention is to provide a spiral gasket in which the inner peripheral edge of the outer ring member can be easily and firmly fitted to the outer peripheral edge of the gasket body.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to achieve the problems and objects in the prior art as described above, and the spiral gasket of the present invention is a flexible filler material. And a hoop material made of a metal tape are overlapped and wound in a spiral shape, an inner ring ring member fitted to the inner circumference of the gasket body, and an outer ring ring fitted to the outer circumference of the gasket body. A spiral gasket provided with a member, wherein a concave member formed on the inner peripheral edge of the gasket body is fitted with a convex member attached to the outer peripheral edge of the inner ring member, thereby forming an inner peripheral edge of the gasket body. While fitting with the outer peripheral edge of the inner ring member, the concave member attached to the inner peripheral edge of the outer ring member is fitted into the convex portion formed on the outer peripheral edge of the gasket body. And by an outer peripheral edge of said gasket body, characterized in that fitted between the inner periphery of the outer ring the ring member.

With this structure, by simply mounting the convex member on the outer peripheral edge of the inner ring member, the convex member on the outer peripheral edge of the inner ring member is inserted into the concave portion formed on the inner peripheral edge of the gasket body. By fitting, the inner circumference of the gasket body can be fitted easily and firmly to the inner ring member. The spiral gasket of the present invention is characterized in that the convex member is formed of a wire member.

By thus forming the convex member from a wire member such as a wire, the convex member can be easily and firmly attached to the outer peripheral edge of the inner ring member by, for example, welding or bonding. You can Therefore, it is not necessary to cut the outer peripheral edge of the inner ring ring member and the inner peripheral edge of the outer ring ring member as in the conventional case, complicated cutting work and equipment are not required, and the cost can be reduced and the delivery time can be shortened. You can also do it.

Further, the spiral gasket of the present invention includes a gasket main body formed by superposing a flexible filler material and a hoop material made of a metal tape and spirally winding the flexible filler material and the inner periphery of the gasket main body. A spiral gasket having an inner ring ring member to be fitted, wherein a concave member or a convex portion formed on the inner peripheral edge of the gasket body is fitted with a convex member attached to the outer peripheral edge of the inner ring member. The inner peripheral edge of the gasket body and the outer peripheral edge of the inner ring member are fitted together.

With this structure, the convex members on the outer peripheral edge of the inner ring member are simply fitted to the concave portions formed on the inner peripheral edge of the gasket body only by mounting the convex member on the outer peripheral edge of the inner ring member. By fitting, the inner circumference of the gasket body can be fitted easily and firmly to the inner ring member. Therefore, it is not necessary to perform cutting processing on the outer peripheral edge of the inner ring member, unlike the conventional case, and complicated cutting processing and equipment are not required, so that the cost can be reduced and the delivery time can be shortened.

Further, the spiral gasket of the present invention is fitted on the outer circumference of the gasket main body, which is formed by superposing a flexible filler material and a hoop material made of a metal tape and spirally winding them. A spiral-shaped gasket having an outer ring member, wherein the gasket body is formed by fitting a concave member attached to an inner peripheral edge of the outer ring member to a convex portion formed on an outer peripheral edge of the gasket main body. The outer peripheral edge and the inner peripheral edge of the outer ring member are fitted together.

With this structure, the concave member on the inner peripheral edge of the outer ring member can be formed on the convex portion formed on the outer peripheral edge of the gasket body only by mounting the concave member on the inner peripheral edge of the outer ring member. By fitting, the outer circumference of the gasket body can be easily and firmly fitted to the outer ring member. Therefore, it is not necessary to perform cutting processing on the outer peripheral edge of the outer ring member as in the conventional case, complicated cutting processing and a device are not required, cost can be reduced, and delivery time can be shortened.

Further, the spiral gasket of the present invention is characterized in that the recessed member is formed of a thin metal plate member having a V-shaped cross section. In this way, the concave material
By forming the thin metal plate member having a V-shaped cross section, the recess member can be easily and firmly attached to the inner peripheral edge of the outer ring member by, for example, welding or bonding.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments (examples) of the present invention will be described below with reference to the drawings. 1 is a partially enlarged sectional view of a first embodiment of the spiral gasket of the present invention, FIG. 2 is a schematic top view of an inner ring member of the spiral gasket of FIG. 1, and FIG. FIG. 3 is an enlarged cross-sectional view of the outer ring member of the spiral gasket of FIG.

In FIG. 1, numeral 10 generally indicates a spiral gasket of the present invention. Spiral wound gasket 1
0 is a flexible tape 12 made of, for example, asbestos, graphite, or tetrafluoroethylene resin, and SUS304, for example.
A thin metal tape 14 having a V-shaped cross section composed of, for example, is overlapped and wound in a spiral shape, and the beginning and the end of the winding are idle-wound by only the metal tape 14 for 2 to 3 rounds and spot-welded. The gasket main body 16 is formed by fixing the gasket main body 16 to each other.

An inner ring member 20 made of an annular metal plate made of SUS304 or the like is fitted and fixed to the inner peripheral edge 18 of the gasket body 16 as a guide member. In this case, the inner peripheral edge 18 of the gasket main body 16 has a V-shaped cross section,
Since a is formed, the convex member 20b is fitted to the outer peripheral edge 20a of the inner ring member 20 by corresponding to the concave portion 18a of the inner peripheral edge 18 of the gasket body 16.

That is, the inner ring member 20 is formed by punching an annular metal plate by a press or the like. Then, as shown in FIGS. 1 and 2, the convex member 20 b has an outer peripheral edge 2 of the inner ring member 20.
A wire member 30 such as a wire is attached to the wire 0a via a joint 32 made of, for example, welding or an adhesive.

In this case, as the inner ring member 20,
It is not particularly limited, and for example, a metal plate such as SPHC can be used. In addition, the inner ring member 2
The thickness of 0 is 1.1 than the thickness of the gasket body 16.
It is thinly formed by about 1.7 mm. This convex member 20
The wire member 30 forming b is not particularly limited, and includes, for example, SUS304 and SUS316.
Wires made of can be used. Further, the joint portion 32 is not particularly limited, and for example, an ultrasonic wave,
They can be joined by brazing, welding by spot welding or the like, or an adhesive such as an epoxy type adhesive.

Further, the diameter of the wire member 30 constituting the convex member 20b is not particularly limited, and may be appropriately set corresponding to the concave portion 18a of the inner peripheral edge 18 of the gasket body 16. Furthermore, this convex member 20b
In the embodiment shown in FIG. 2, the wire member 30 constituting the above is formed all around the outer peripheral edge 20a of the inner ring member 20, but as shown in FIG. It is also possible to arrange four parts, for example, at positions where the central angle α is 90 °. In this case, the central angle α and the number of wire members 30 are not particularly limited and can be set as appropriate.

On the other hand, the outer peripheral edge 22 of the gasket body 16 is fixed by fitting an outer ring member 24 made of an annular metal plate as a guide member. In this case, since the outer peripheral edge 22 of the gasket body 16 is formed with a convex portion 22a having a V-shaped cross section, it is formed on the inner peripheral edge 24a of the outer ring member 24 and the convex portion 22a of the outer peripheral edge 22 of the gasket body 16. Correspondingly, it is fitted by mounting the recessed member 24b in a V-shaped cross section.

That is, the outer ring member 24 is formed by punching an annular metal plate by a press or the like. In this case, the outer ring member 24 is not particularly limited, and a metal plate such as SPHC can be used, for example. The thickness of the outer ring member 24 is smaller than that of the gasket body 16.
It is thinly formed by 1.1 to 1.7 mm.

As shown in FIG. 3, the concave member 24b is welded or bonded to the inner peripheral edge 24a of the outer ring member 24 by, for example, welding a thin metal plate member 34 bent in a V-shaped cross section. It is attached through a joint portion 36 made of an agent or the like. In this case, the outer ring member 24 is not particularly limited, and a metal plate such as SUS304 can be used, for example. The thickness of the outer ring member 24 is smaller than that of the gasket body 16 by 1.
It is thinly formed by 1 to 1.7 mm.

The metal thin plate member 34 constituting the recessed member 24b is not particularly limited, and for example,
SUS316 etc. can be used. Further, the joint portion 36 is not particularly limited, and for example, an ultrasonic wave,
They can be joined by welding such as brazing, welding by spot welding, or an adhesive such as epoxy.

Further, the thickness and bending angle of the metal thin plate member 34 constituting the recess member 24b are not particularly limited, and may be appropriately selected according to the protrusion 22a of the outer peripheral edge 22 of the gasket body 16. Just set it. This recess material 24
In the embodiment shown in FIG. 3, the metal thin plate member 34 constituting b is formed such that, as shown in FIG. 5, a part of the inner peripheral edge 24a of the outer ring member 24, for example, the central angle α becomes 90 °. Four pieces are arranged at the position. In this case, the central angle α and the number of the thin metal plate members 34 are not particularly limited and can be set appropriately.

Further, in the embodiment shown in FIG. 3, the concave member 2
4b is a metal thin plate member 34, the outer ring ring member 2
Although it is formed on a part of the inner peripheral edge 24a of No. 4, although it is not shown, it is also possible to form it on the entire circumference of the inner peripheral edge 24a of the outer ring member 24. According to the spiral gasket 10 of the present invention configured as described above, the concave portion 1 formed in the inner peripheral edge 18 of the gasket body 16 is simply attached to the outer peripheral edge 20 a of the inner ring member 20.
By fitting the convex member 20b of the outer peripheral edge 20a of the inner ring member 20 to 8a, the inner periphery of the gasket body 16 can be easily and firmly fitted to the inner ring member 20.

The inner peripheral edge 24a of the outer ring member 24
Simply attach the recessed material 24b to the gasket body 1
By fitting the concave member 24b of the inner peripheral edge 24a of the outer ring ring member 24 into the convex portion 22a formed on the outer peripheral edge 22 of 6, the outer periphery of the gasket body 16 can be easily and firmly fixed to the outer ring ring member 24. Can be fitted.

Therefore, the outer peripheral edge 20 of the inner ring member 20
a, the inner peripheral edge 24a of the outer ring member 24 does not need to be cut as in the conventional case, a special jig is not required, and the cost can be reduced and the delivery time can be shortened. In the embodiment shown in FIG. 1, the spiral gasket with inner and outer rings having both the inner ring ring member 20 and the outer ring ring member 24 has been described, but as shown in FIG. 6, only the inner ring ring member 20 is used. It is also possible to apply the present invention to a spiral gasket with an inner ring, and as shown in FIG. 7, to a spiral gasket with an outer ring having only the outer ring member 24.

6 and 7 correspond to the embodiment of FIG. 1, the same components are designated by the same reference numerals, and detailed description thereof will be omitted.

[0031]

As described above, according to the present invention,
Just attach a convex member to the outer peripheral edge of the inner ring member,
By fitting the convex members on the outer peripheral edge of the inner ring ring member into the concave portions formed on the inner peripheral edge of the gasket body, the inner peripheral surface of the gasket body can be easily and firmly fitted to the inner ring ring member.

Further, by simply mounting the recessed material on the inner peripheral edge of the outer ring member, the recessed material on the inner peripheral edge of the outer ring member is fitted to the convex portion formed on the outer peripheral edge of the gasket body. The outer periphery of the gasket body can be easily and firmly fitted to the outer ring member. Therefore, it is not necessary to cut the outer peripheral edge of the inner ring member, the inner peripheral edge of the outer ring member as in the prior art, a special jig is not required, it is possible to reduce the cost,
It is an extremely excellent invention that has many remarkable and unique actions and effects such as shortening the delivery time.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view of a first embodiment of the spiral gasket of the present invention.

FIG. 2 is a schematic top view of the inner ring member of the spiral gasket of FIG.

FIG. 3 is an enlarged sectional view of an outer ring member of the spiral gasket of FIG.

FIG. 4 is a schematic top view showing another embodiment of the inner ring member of the spiral gasket of FIG.

5 is a schematic top view of another embodiment of the outer ring member of the spiral gasket of FIG.

FIG. 6 is a partially enlarged sectional view of another embodiment of the spiral gasket of the present invention.

FIG. 7 is a partially enlarged cross-sectional view of another embodiment of the spiral gasket of the present invention.

FIG. 8 is a partially enlarged sectional view of another embodiment of the conventional spiral gasket.

[Explanation of symbols]

10 Spiral gasket 12 tapes 14 metal tape 16 Gasket body 18 Inner periphery 18a recess 20 Inner ring member 20a outer peripheral edge 20b convex member 22 Outer edge 22a convex part 24 Outer ring member 24a inner peripheral edge 24b Recess material 30 wire members 32 joints 34 Metal thin plate member 36 joint

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fumihiro Matsumoto             150, Motomiyamichi, Kawada, Shinshiro-shi, Aichi Japan Bar             Car Industry Co., Ltd. Shinshiro Factory F term (reference) 3J040 BA08 EA41 HA01 HA02 HA03

Claims (5)

[Claims] 1. A gasket main body formed by stacking a flexible filler material and a hoop material made of a metal tape in a spiral shape, and an inner ring member fitted to an inner circumference of the gasket main body. A spiral gasket having an outer ring ring member fitted to the outer periphery of the gasket body, wherein a convex member attached to the outer peripheral edge of the inner ring ring member is fitted in a recess formed in the inner peripheral edge of the gasket body. Thus, the inner peripheral edge of the gasket main body and the outer peripheral edge of the inner ring ring member are fitted together, and the convex portion formed on the outer peripheral edge of the gasket main body is fitted with the concave member attached to the inner peripheral edge of the outer ring ring member. The spiral gasket, wherein the outer peripheral edge of the gasket main body and the inner peripheral edge of the outer ring member are fitted by being attached. 2. A gasket main body formed by stacking a flexible filler material and a hoop material made of a metal tape in a spiral shape, and an inner ring member fitted to the inner circumference of the gasket main body. A spiral-shaped gasket comprising: a gasket formed on an inner peripheral edge of the gasket body, and a convex member attached to an outer peripheral edge of the inner ring member is fitted to the inner peripheral edge of the gasket body; A spiral-shaped gasket, which is fitted with the outer peripheral edge of the. 3. A gasket body formed by stacking a flexible filler material and a hoop material made of a metal tape in a spiral shape, and an outer ring ring member fitted to the outer periphery of the gasket body. A spiral-shaped gasket, wherein a concave member attached to an inner peripheral edge of the outer ring ring member is fitted to a convex portion formed on an outer peripheral edge of the gasket body, thereby forming an outer peripheral edge of the gasket main body and an outer ring ring member. A spiral gasket, which is fitted with the inner peripheral edge of the. 4. The spiral gasket according to claim 1, wherein the convex member is formed of a wire member. 5. The spiral gasket according to claim 1, wherein the concave member is formed of a thin metal plate member bent in a V-shaped cross section.