JPH09287208A - Method of mounting gasket on joint part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily mount a gasket on a joint part without twisting and improve water stop property of the joint part by inserting a flat plate shaped jig from the opening end in the lengthwise direction of a long gasket of nearly U-shaped section, and pressing the bottom wall of the gasket with the extreme end of the jig. SOLUTION: On both side wall 1a, 1a in the vicinity of the opening end in the lengthwise direction of a long gasket 1 of nearly U-shaped section integratedly molded out of elastic material, projections 2, 2 having cavities are formed on the inside faces, and double-side adhesive tapes 3, 3 are stuck on the outside faces. A flat plate like jig 10 is inserted from the opening end in the lengthwise direction of the gasket 1. At this time the projections 2, 2 formed on the gasket 1 pinchedly hold the inserted jig 10 from both sides. Next, the extreme end 10a of the jig 10 is pressed against the bottom wall 1b of the gasket 1, so as to push the gasket 1 to the joint part X between molded plates A, A. Next the jig 10 is swung in the wall directions of the molded plates A, A, so as to press both side walls 1a, 1a against the walls of the joint part X.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for mounting a gasket on a joint portion, and more particularly, to a gasket for inserting a molded plate constituting an outer wall of a building and then inserting the gasket into the joint portion between the molded plates. The present invention relates to a method of mounting the joint on the joint.

[0002]

2. Description of the Related Art Conventionally, an annular gasket has been most commonly used double as a gasket used for a molding plate constituting an outer wall of a building, for example, a joint portion of a precast concrete panel. . This annular gasket is previously attached to the edge of the molding plate by means such as adhesion, and the annular gaskets attached when the molding plate is built up are brought into contact with each other as shown in FIG. To stop the water.

However, in the method in which the gasket as described above is attached to the small surface of the forming plate in advance, the attached gasket is easily damaged during the transfer or the installation of the forming plate, and the gasket attached at the time of the installation is installed. In some cases, it was difficult to accurately bring the two into contact with each other at a predetermined position, and a sufficient water blocking effect could not be obtained.

There is also a method of inserting the gasket into the joint after the molding plate has been installed. In this case, however, the gasket is pushed into the joint by pressing the rear surface side with a hand or a screwdriver. Therefore, it is very difficult to insert the gasket into the joint without twisting, and this method requires external scaffolding, so it cannot be installed in a narrow space with a narrow gap between adjacent buildings. Was limited.

Further, in recent years, first, air in the hollow portion is evacuated to flatten the gasket and the flattened gasket is inserted into the joint portion, and then the hollow portion and the outside air are communicated with each other to restore the cross-sectional shape of the gasket in the joint portion. Although a mounting method has been proposed, in the case of such a method, the number of steps of vacuuming and releasing the vacuum in the hollow part increases, and the remaining gasket that was once cut with a cutter etc. to release the vacuum is then mounted in the same way. There was a problem of not being able to take a method.

The present invention has been made in view of the problems of the above-described conventional method of mounting a gasket on a joint, and its object is to provide good workability for mounting on the joint. Another object of the present invention is to provide a method for mounting a gasket, which is excellent in waterproofness, on a joint portion.

[0007]

In order to achieve the above-mentioned object, the present invention provides a long gasket having a substantially U-shaped cross section, and a flat plate-shaped jig is inserted from an opening end in the longitudinal direction of the gasket. The gasket is inserted into the joint by pressing the bottom wall of the gasket with the tip of the flat jig, or a strip-shaped gasket is attached in the vicinity of the center in the width direction of the gasket. The method of mounting the gasket on the joint portion is such that the gasket is pressed by the tip of the jig and is inserted into the joint portion in the state of a substantially U-shaped cross section. According to the method of mounting the gasket on the joint portion according to the present invention, the gasket is twisted by inserting the gasket into the joint portion while pressing the tip near the center of the gasket and pulling the other portion. Without easily twisting the gasket, the water resistance of the joint can be improved. Further, by using a long flat plate-shaped jig, a gasket having a long distance can be inserted into the joint portion at a time, and the gasket can be inserted even in a narrow place where an external scaffold cannot be installed.

Further, according to the present invention, a long gasket having an approximately U-shaped cross section having an adhesive layer on the outer side surfaces of both side walls is inserted into a flat jig from the opening end of the gasket in the longitudinal direction. After the bottom wall of the gasket was inserted into the joint by pressing the bottom wall of the gasket with the tip of the plate-shaped jig, the plate-shaped jig was swung in the direction of both wall surfaces that define the joint, and then provided on the gasket. A method of mounting the gaskets on the joints in which the adhesive layers are respectively adhered to the wall surfaces of the joints, or a strip plate-shaped gasket having an adhesive layer on one surface at both ends in the width direction is formed on the other surface of the gasket in the width direction. The vicinity of the center is pressed by the tip of a flat plate-shaped jig, and the flat plate-shaped jig is inserted into the joint portion in a U-shaped cross section, and then the flat plate-shaped jig is swung in the direction of both wall surfaces defining the joint portion. The adhesive layer provided on the gasket is used for joints. And a mounting method of the joint portion of the gasket to be respectively in close contact with the wall surface. According to the method of mounting the gasket on the joint portion according to the present invention, in addition to the action and effect of the present invention described above, the surface serving as the water blocking portion of the gasket can be completely adhered to the wall surface of the joint portion, respectively. In addition, it is possible to provide a joint portion having a higher waterproofness.

Here, the long gasket having a substantially U-shaped cross section used in the method according to the present invention preferably has a ridge on the inner surface near the opening end in the longitudinal direction. This is because if there is a ridge on the inner surface near the opening in the longitudinal direction of the gasket, the ridge will sandwich the flat plate-shaped jig inserted from the opening in the longitudinal direction of the gasket, and the gasket will be easily removed. It is preferable because it does not fall off from the flat plate-shaped jig.

Further, it is preferable that the strip-shaped gasket used in the method according to the present invention is easily deformed near the center in the width direction as compared with other portions. This is a flat plate shape if it is easily deformed compared to other parts by thinning the thickness in the center of the gasket in the width direction or by forming it with a material that is easily deformed. When pushing in with a jig of
The shape of the gasket is likely to occur, the insertion into the joint is done smoothly, and the gasket is easily deformed even when the portion pressed by the flat plate-shaped jig is displaced from the vicinity of the center in the width direction of the gasket. It is preferable because it bends in the vicinity of the center in the width direction and is always attached to the joint portion with a substantially U-shaped cross section having a constant shape.

Further, the long gasket having a substantially U-shaped cross section or the strip-shaped gasket used in the method according to the present invention closes the open end in the longitudinal direction in a state where it is attached to the joint portion, and the inner space is closed. It is preferable to have a ridge that defines This is because if such a ridge exists,
Since the convex line becomes a backup part of the irregular sealing material or the rainwater sealing part in a state where it is attached to the joint part, and the internal space defined inside the convex line becomes the water supply (mizumichi). It is preferable because it is a gasket having a high water-stopping property, which has water in its own shape.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for mounting a gasket according to the present invention on a joint portion will be described below in detail with reference to the drawings.

1 to 5 show a first embodiment of a method of mounting a gasket on a joint portion according to the present invention, in which FIG. 1 shows a gasket used in this method. This is an example. The gasket 1 shown in the figure is a long gasket integrally formed of an elastic material such as EPDM sponge and having a substantially U-shaped cross section.

On both side walls 1a, 1a near the opening end in the longitudinal direction of the gasket 1, there are formed ridges 2, 2 having cavities on the inner side surfaces thereof, and double sided adhesive tapes 3, 3 are formed on the outer side surfaces thereof. It is attached.

The ridges 2 and 2 formed on the gasket 1
Is attached to the joint portion X formed between the molding plates A and A as shown in FIG. 2 or 3, and abuts in the vicinity of the center between the side walls 1a and 1a of the gasket 1,
The inner space Y is defined while closing the opening end.

When the long gasket 1 having a substantially U-shaped cross section is attached to the joint portion X, first, the flat jig 10 is inserted from the opening end of the gasket 1 in the longitudinal direction. At this time, the ridges 2 and 2 formed on the gasket 1
Holds the inserted plate-shaped jig 10 from both sides (see FIG. 1), and the gasket 1 can be easily inserted into the plate-shaped jig 1.
It shall not fall from 0.

Subsequently, the gasket 1 is formed between the molding plates A and A while the bottom wall 1b of the gasket 1 is pressed by the tip 10a of the plate-shaped jig 10 inserted as shown in FIG. Push it into the joint X. At this time, both side walls 1a, 1a of the gasket 1 enter the joint portion X while being dragged by the bottom wall 1b, and are inserted into the joint portion X without being twisted or partially atrophied or deformed.

After the gasket 1 is pushed in to a predetermined position of the joint portion X by the flat plate-shaped jig 10, the flat plate-shaped jig 10 is formed into molding plates A and A which define the joint portion X as shown in FIG. Swinging toward the wall surface of the
The double-sided adhesive tapes 3, 3 provided on the outer surfaces of both side walls 1a, 1a by pressing a, 1a against the wall surface of the joint portion X, respectively.
The adhesive layers of are adhered to the wall surfaces of the joint portion X, respectively. At this time, the ridges 2, 2 present on the inner side surfaces of the side walls 1a, 1a of the gasket 1 make it easier for the pressing force of the flat plate-shaped jig 10 to act on the side walls 1a, 1a, so that both side walls are firmly supported. 1a and 1a can be pressed against the wall surface of the joint portion X, respectively.

After the above work is completed, the plate-shaped jig 1
0 is pulled out from the gasket 1 and the work of attaching the gasket 1 to the joint portion X of the portion pressed by the flat jig 10 is completed. After that, the remaining gasket 1
Is attached to the joint portion X by repeating the same method as described above.

Next, with reference to FIGS. 6 to 8, a second embodiment of a method for mounting a gasket on a joint portion according to the present invention will be described. First, FIG. 6 shows an example of a gasket used in this method, and the gasket 51 is a strip-shaped gasket integrally formed of an elastic material such as EPDM sponge.

Both ends 51 in the width direction of the gasket 51
a and 51a, a ridge 52 having a cavity on one surface thereof,
52 is formed, and the double-sided adhesive tape 5 is provided on the other surface.
3,53 are attached. In addition, this gasket 51
At the center 51b in the width direction of the double-sided adhesive tape 53, 5
A cutout groove 54 is formed on the surface side to which 3 is attached, and is configured to be easily deformed as compared with other portions.

The ridges 5 formed on the gasket 51
2 and 52 are mounted on the joint portion X formed between the molding plates A and A as shown in FIG. 2 or FIG. 3, and the width direction end portions 51a and 51a of the gasket 51 are attached.
It abuts in the vicinity of the center of the space and closes the open end and defines the internal space Y.

In mounting the above-mentioned strip-shaped gasket 51 on the joint portion X, first, the strip-shaped gasket 51 is attached with its double-sided adhesive tapes 53, 53 as shown in FIG. With the surface side facing the forming plates A, A,
In addition, it is arranged so as to close the opening of the joint portion X. At this time, the double-sided adhesive tapes 53, 5 attached to the gasket 51
By lightly attaching the adhesive layer of 3 to the forming plates A, A,
It is possible to prevent the gasket 51 arranged so as to close the opening of the joint portion X from falling off.

Subsequently, as shown in FIG. 8, the vicinity of the widthwise center 51b of the gasket 51 is pressed by the tip 10a of the flat plate-shaped jig 10 to form the gasket 51 in a substantially U-shaped cross section. , A is pressed into the joint portion X formed. At this time, since the notch groove 54 is formed in the center 51b in the width direction of the gasket 51 and is configured to be easily deformed as compared with other portions, the gasket 51 has a substantially U-shaped cross section. The gasket 51 is easy to insert into the joint portion X, and the gasket 51 is easily deformed even when the portion pressed by the jig 10 having a flat plate shape is displaced from the center 51b in the width direction of the gasket 51. It is bent at the center 51b and is always inserted into the joint portion X with a substantially U-shaped cross section having a constant shape. Further, when the gasket 51 is inserted, both widthwise end portions 51a, 51a of the gasket 51 enter the joint portion X while being dragged by the widthwise center 51b and are not twisted or partially atrophied or deformed. It is inserted into the joint portion X.

After the gasket 51 is pushed to the predetermined position of the joint portion X by the flat plate-shaped jig 10, the flat plate-shaped jig 10 is formed into a molding plate which defines the joint portion X in the same manner as shown in FIG. By swinging in the wall direction of A, A, the adhesive layer of the double-sided adhesive tape 53, 53 adhered to the gasket 51 is brought into close contact with the wall surface of the joint portion X, respectively. At this time, the ridges 52, 52 present on the widthwise ends 51a, 51a of the gasket 51 facilitate the pressing force of the flat plate-shaped jig 10 on the widthwise ends 51a, 51a.
Both widthwise end portions 51a, 51a can be firmly pressed against the wall surface of the joint portion X, respectively.

After the above work is completed, the flat plate-shaped jig 1
0 is pulled out from the gasket 51, and the flat-shaped jig 10
The work of attaching the gasket 51 to the joint portion X of the portion pressed by is completed. After that, the remaining gasket 51 is attached to the joint portion X by repeating the same method as described above.

The gasket 1 or 51 mounted on the joint portion X by the above-described method for mounting the gasket on the joint portion according to the present invention has a surface which is not twisted in the joint portion X and serves as a water stop portion. Since each of them firmly adheres to the wall surface of the joint portion X, it has a high water stopping property. Moreover, in the gasket 1 or 51 used in the method according to the present invention described above, the ridges 2, 2 which close the open end in the longitudinal direction and define the internal space Y in the state where the gasket 1 or 51 is attached to the joint portion X, or Because of having 52, 52, the ridges 2, 2 or 52, 52 serve as a rainwater sealing portion (see FIG. 2) or a backup portion of the amorphous sealing material B (see FIG. 3). At the same time, the internal space Y defined inside the ridges 2, 2 or 52, 52 becomes a water supply (mizumichi), and the gasket has a high water-stopping property and has water in its own shape. .

Although the embodiment of the method for mounting the gasket on the joint portion according to the present invention has been described above, the present invention is not limited to the above-described embodiments, and is within the scope of the technical idea of the present invention. Various modifications and changes are possible. For example, the shape of the gasket shown in the above embodiment is merely an example of the gasket used in the method according to the present invention, and when the gasket is attached to the joint, as shown in FIG.
When various gaskets having a substantially U-shaped cross section as shown in FIG. 12 can be used in the present invention, and when used in the secondary seal construction method, the ridges provided on the gasket are not attached to the joints. It is not necessary to close the opening end by abutting it, and if it is close to the opening end, the opening end may be closed so as to form a backup portion of the irregular sealing material, so that the internal space is defined. 9 to 12, the same parts as those in the previous figures are designated by the same reference numerals and the description thereof will be omitted. Further, the material of the gasket that can be used in the present invention is not particularly limited, and in the case of a ridge portion and other portions, or in the case of a strip plate-shaped gasket, the vicinity of the center in the width direction and other portions are different It may be a gasket formed by. Further, the adhesive layer provided on the gasket becomes unnecessary if it adheres to the wall surface of the joint portion by the elastic force of the gasket itself. In this case,
After inserting the gasket into the joint portion, it is possible to omit the work of swinging the plate-shaped jig toward the wall surface defining the joint portion to bring the adhesive layer into close contact with the wall surface of the joint portion.

[0029]

As described above, according to the method of mounting the gasket on the joint portion according to the present invention, the gasket can be easily mounted without being twisted on the joint portion, and since the mounted gasket is not twisted, the joint portion is not twisted. The water resistance of the part is also good. Also, by using a long flat plate-shaped jig, it is possible to insert a gasket over a long distance into the joint part at a time, and it is possible to insert the gasket even in narrow places where external scaffolding cannot be installed. Become.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of a gasket used in a first method according to the present invention.

FIG. 2 is a cross-sectional view showing a primary seal construction method for joints using the gasket shown in FIG.

FIG. 3 is a cross-sectional view showing a secondary seal construction method for joints using the gasket shown in FIG.

FIG. 4 is a cross-sectional view showing a state in which a gasket is attached to a joint portion by the first method according to the present invention.

FIG. 5 is a cross-sectional view showing a state in which a gasket is attached to a joint by the first method according to the present invention.

FIG. 6 is a perspective view showing an example of a gasket used in a second method according to the present invention.

FIG. 7 is a cross-sectional view showing a state in which a gasket is attached to a joint by the second method according to the present invention.

FIG. 8 is a cross-sectional view showing a state where a gasket is attached to a joint by the second method according to the present invention.

FIG. 9 is a perspective view showing another example of the gasket used in the method according to the present invention.

FIG. 10 is a perspective view showing still another example of the gasket used in the method according to the present invention.

FIG. 11 is a perspective view showing still another example of the gasket used in the method according to the present invention.

FIG. 12 is a perspective view showing still another example of the gasket used in the method according to the present invention.

FIG. 13 is a cross-sectional view showing a primary seal construction method for joints using a conventional annular gasket.

FIG. 14 is a cross-sectional view showing a secondary seal construction method for joints using a conventional annular gasket.

[Explanation of symbols]

 1 Long gasket having a substantially U-shaped cross section 1a Gasket side wall 1b Gasket bottom wall 2 Convex strip 3 Double-sided adhesive tape 10 Flat plate jig 10a Flat plate jig tip 51 Strip plate gasket 51a Gasket Width end 51b Gasket width center 52 Convex ridge 53 Double-sided adhesive tape 54 Notch groove A Molded plate B Atypical sealing material X Joint part Y Internal space

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Issei Tsuchikawa 4-20-3 Ebisu, Shibuya-ku, Tokyo Inside Iton Japan Co., Ltd.

Claims (7)

[Claims] 1. A long gasket having a substantially U-shaped cross section,
A flat plate-shaped jig is inserted from the opening end in the longitudinal direction of the gasket, and the bottom wall of the gasket is pressed by the tip of the flat plate-shaped jig to be inserted into the joint portion. How to wear. 2. A long gasket having a substantially U-shaped cross section having an adhesive layer on the outer surface of both side walls, and a flat jig is inserted from the opening end of the gasket in the longitudinal direction, and the flat jig is fixed. After inserting into the joint by pressing the bottom wall of the gasket with the tip of the tool, the flat plate-shaped jig is swung in the direction of both wall surfaces that define the joint, and the adhesive layer provided on the gasket is attached. A method for mounting a gasket on a joint, which is characterized in that each gasket is closely attached to a wall surface of the joint. 3. A gasket having a strip plate shape, which is inserted into a joint portion in a state of having a substantially U-shaped cross section by pressing the vicinity of the center in the width direction of the gasket with a tip of a flat plate jig. How to attach to the joint. 4. A strip-shaped gasket having an adhesive layer on one surface of both widthwise end portions is pressed by the tip of a flat-plate jig near the widthwise center of the other surface of the gasket,
After being inserted into the joint in the state of a substantially U-shaped cross section, the plate-shaped jig is swung in the direction of both wall surfaces that define the joint, and the adhesive layer provided on the gasket is attached to the wall of the joint. A method of attaching gaskets to joints, characterized in that they are in close contact with each other. 5. The gasket joint according to claim 1, wherein the long gasket having a substantially U-shaped cross section is a gasket having a ridge on the inner surface near the opening end in the longitudinal direction. How to attach to the part. 6. The gasket according to claim 3 or 4, wherein the strip-shaped gasket is easily deformed in the vicinity of the center in the width direction as compared with other portions. How to wear. 7. The elongated gasket having a substantially U-shaped cross section or the strip-shaped gasket closes a longitudinal opening end in a state of being attached to a joint portion, and forms a ridge that defines an internal space. It has what is characterized by the above-mentioned.
A method for mounting a gasket according to 2, 3, 4, 5 or 6 on a joint portion.