JP3077120B2 - Gasket for duct flange - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gasket for a duct flange which is interposed between flanges at a connecting portion of a duct such as a smoke exhaust duct or a general air conditioning duct.

[0002]

2. Description of the Related Art Conventionally, as a gasket for a duct flange of this type, a cloth tape in which a metal foil such as an aluminum foil is stuck on one side as a whole is used. , And a release tape with an adhesive applied to one side is attached to the bent surface,
A tape in which both ends of the tape are joined by the adhesive is used.

[0003]

A conventional gasket for a duct flange is constructed by bending a fabric tape having a metal foil adhered on one entire surface so that the metal foil adhered surface is on the outside and the ends are abutted. Therefore, there are drawbacks that sufficient cushioning properties cannot be obtained, that the production is troublesome, and that the cost is high.

The present invention has been made in view of the above-mentioned conventional drawbacks,
An object of the present invention is to provide a gasket for a duct flange which has sufficient cushioning property and durability, can be easily manufactured, and can be used easily.

The above and other objects and novel features of the present invention will become more completely apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the technical scope of the present invention.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a rock wool fibrous material, and the rock wool fibrous material is bonded and fixed so that the mating surface is positioned substantially at the center of one side surface. A duct made of a glass cloth coated with an adhesive on the inner wall surface and a double-sided tape having a release paper adhered to a surface adhered and fixed to one side of the glass cloth so as to cover a mating surface of the glass cloth. It constitutes a gasket for a flange.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 7, reference numeral 1 denotes the present invention which is interposed between flanges 3 of a connecting portion of a duct 2 such as a smoke exhaust duct or a general air-conditioning duct. The duct flange gasket 1 was bonded and fixed so as to wrap the rock wool fiber material 4 formed in a gasket shape having a rectangular cross section and both ends of the rock wool fiber material 4 in a state of abutting each other. A glass cloth 6 having an adhesive 5 applied to an inner wall thereof, and a glass cloth 6 covering the abutting surface of the glass cloth 6.
And a double-sided tape 8 having a release paper 7 adhered to the surface adhered and fixed.

A gasket 1 for a duct flange having the above structure.
Is manufactured by an automatic molding machine to a fixed length of, for example, 10 meters. Therefore, when used, it is cut to a size that can be bonded and fixed to one flange 3 of the connecting portion, and the cut-off paper of the cut gasket 1 for a duct flange is cut. 7 is peeled off and fixed to one flange 3 with a double-sided tape 8.

At this time, a ring is adhered and fixed to one of the flanges 3 so that no gap is formed at each corner of the flange 3 so that smoke and the like do not come out from the inside to the outside.

In this state, by fastening the flanges 3 and 3 together with a plurality of bolts 9 and nuts 10, the rock wool fiber material 4 is crushed, so that the connection portion can be reliably sealed.

[0012]

Next, different embodiments of the present invention shown in FIGS. 8 to 24 will be described. In addition,
In the description of the different embodiments of the present invention, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 8 to 13 is mainly different from the first embodiment of the present invention in that a rock wool fiber material formed in a rectangular shape with a thin section is used. 4A, a double-sided tape 8 to which a release paper 7 is adhered is adhered and fixed so that the butt surface covers one side, and then a bolt insertion hole is formed in a portion of the flange 3 corresponding to the plurality of bolt insertion holes 11. 12, the gasket 1 for a duct flange constructed as described above.
Even in the case of A, the same operation and effect as in the first embodiment of the present invention can be obtained.

The third embodiment of the present invention shown in FIGS. 14 to 18 is mainly different from the first embodiment of the present invention in that both ends of the rock wool fiber material 4B are overlapped and fixed. When the gasket 1B for a duct flange configured as described above is covered with the glass cloth 6 thus made,
The same functions and effects as those of the first embodiment of the present invention can be obtained.

The fourth embodiment of the present invention shown in FIGS. 19 to 24 is mainly different from the third embodiment of the present invention in that a double-sided tape 8 to which a release paper 7 is adhered is adhered. After fixing, a plurality of bolt insertion holes 1 in the flange 3
1 in that a bolt insertion hole 12 is formed at a position corresponding to 1.
With the gasket for duct flange 1C formed in this way, the same operation and effect as those of the third embodiment of the present invention can be obtained.

[0016]

As is clear from the above description, the following effects can be obtained in the present invention.

(1) A rock wool fiber material, and a glass cloth coated with an adhesive on an inner wall surface which is adhesively fixed so as to wrap the rock wool fiber material so that the mating surface is positioned substantially at the center of one side surface. And a double-sided tape in which a release paper is adhered to a surface adhered and fixed to one side of the glass cloth so as to cover the mating surface of the glass cloth, so that it is applied to the inner wall surface of the glass cloth. Since the rock wool fiber material and the glass cloth are bonded and fixed by the adhesive material, it is possible to prevent the glass cloth and the rock wool fiber material from being displaced from each other and efficiently prevent leakage of smoke and the like.

(2) According to the above (1), since the rock wool fiber material is used, sufficient cushioning properties can be obtained, and reliable sealing can be performed.

(3) According to the above (1), since the glass cloth is used, the durability against heat, gas and the like can be improved.

(4) According to the above (1), the rock wool fiber material is adhered and fixed with a glass cloth so that the mating surface is positioned substantially at the center of one side surface and wrapped around the one side surface of the glass cloth. Since the double-sided tape to which the release paper is bonded is adhered and fixed, the double-sided tape can be easily adhered and fixed to the flange of the duct. Therefore, the mounting operation can be easily performed.

(5) According to the above (1), the mating surface of the glass cloth is fixed at a position substantially at the center of one side surface so as to be covered with the double-sided tape. In addition to reliably preventing peeling, the mating surface of the glass cloth comes into surface contact with one flange and double-sided tape when sandwiched between the flanges of the duct, making the glass cloth more reliable. The mating surfaces are fixed. Therefore, it is possible to reliably prevent problems such as dropping of the rock wool fiber material from inside the glass cloth due to aging.

(6) Claims 2 and 3 also have the above (1) to (3).
The same effect can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a first embodiment of the present invention.

FIG. 2 is a plan view of the first embodiment of the present invention.

FIG. 3 is a front view of the first embodiment of the present invention.

FIG. 4 is a bottom view of the first embodiment of the present invention.

FIG. 5 is a side view of the first embodiment of the present invention.

FIG. 6 is an explanatory diagram of an attached state according to the first embodiment of the present invention.

FIG. 7 is an explanatory diagram of a use state of the first embodiment of the present invention.

FIG. 8 is an explanatory diagram of a second embodiment of the present invention.

FIG. 9 is a plan view of a second embodiment of the present invention.

FIG. 10 is a front view of a second embodiment of the present invention.

FIG. 11 is a bottom view of the second embodiment of the present invention.

FIG. 12 is a side view of the second embodiment of the present invention.

FIG. 13 is a sectional view taken along lines 13-13 in FIG. 9;

FIG. 14 is an explanatory diagram of a third embodiment of the present invention.

FIG. 15 is a plan view of a third embodiment of the present invention.

FIG. 16 is a front view of a third embodiment of the present invention.

FIG. 17 is a bottom view of the third embodiment of the present invention.

FIG. 18 is a side view of the third embodiment of the present invention.

FIG. 19 is an explanatory diagram of a fourth embodiment of the present invention.

FIG. 20 is a plan view of a fourth embodiment of the present invention.

FIG. 21 is a front view of a fourth embodiment of the present invention.

FIG. 22 is a bottom view of the fourth embodiment of the present invention.

FIG. 23 is a side view of the fourth embodiment of the present invention.

FIG. 24 is a sectional view taken along the line 24-24 in FIG. 20;

[Explanation of symbols]

 1, 1A, 1B, 1C: Gasket for duct flange, 2: Duct, 3: Flange, 4, 4A, 4B: Rock wool fiber material, 5: Adhesive, 6: Glass cloth, 7: Release paper, 8: Both sides Tape: 9: bolt, 10: nut, 11: bolt insertion hole, 12: bolt insertion hole.

Claims (3)

(57) [Claims] 1. A rock wool fiber material, and a glass cloth coated with an adhesive on an inner wall surface which is adhesively fixed so as to wrap the rock wool fiber material so that a mating surface is located at a substantially central portion of one side surface. A gasket for a duct flange, comprising a double-sided tape having a release paper adhered to a surface adhered and fixed to one side of the glass cloth so as to cover a mating surface of the glass cloth. 2. A rock wool fiber material, a glass cloth coated with an adhesive on an inner wall surface which is adhesively fixed so as to wrap the rock wool fiber material so that both ends thereof are overlapped and wrapped at substantially the center of one side surface, and A gasket for a duct flange, comprising a double-sided tape having a release paper adhered to a surface adhered and fixed to one side of the glass cloth so as to cover a mating surface of the glass cloth. 3. A rock wool fibrous material formed in a gasket shape, and an inner wall surface adhered and fixed so as to wrap the rock wool fibrous material so as to wrap the rock wool fibrous material at a position substantially at the center of one side face in a state where both ends are abutted. A duct comprising: a glass cloth coated with an agent; and a double-sided tape having a release paper adhered to a surface adhered and fixed to one side surface of the glass cloth so as to cover a butt surface of the glass cloth. Gasket for flange.