JP2531433Y2 - Manhole socket - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole socket used for connecting a base end portion of a pipe to a side mass of a manhole.

[0002]

2. Description of the Related Art As a connector for connecting a base end portion of a pipe to a side lump of a manhole, for example, Japanese Utility Model Application Laid-Open No. 62-11239.
A cylindrical joint rubber described in Japanese Patent Application Publication No. 0 is known. The above-mentioned cylindrical joint rubber has a protruding portion that protrudes in the axial direction at one end of a cylindrical portion that is coaxially inserted into an end of a fume tube connected to a side lump of a manhole, and a flange-like radial portion of the cylindrical portion. At the time of construction, an adhesive is stuck between the outer surface of the attached edge and the edge, and the edge has a shape with a wide upper part, and further, an adhesive layer is attached to the cylindrical portion, the bellows portion and the inner diameter surface And a fastening rubber band for fastening from outside the cylindrical portion. When the tube is connected to the side mass of the manhole using this rubber joint, the adhesive layer provided on the inner surface of the cylinder and the fastening rubber band provided on the outside of the cylinder are used to connect the tube and the cylinder. If so, the water can be reliably stopped.

[0003]

However, in the joint rubber having the above-described structure, for example, when connecting a pipe material to a portion where the side mass for the middle part and the side mass for the lower part of the manhole overlap vertically, A step is formed by the overlapping portion protruding in a flange shape on the outer surface of the lower end of the part side mass and the upper end of the lower side mass, so that the edge of the joint rubber is attached to the outer surface of the above overlapping portion. As a result, wrinkles or dubbing may occur, which may cause poor sealing between the edge and the manhole-side lump. For this reason, there is a method in which the pipe is directly connected to the overlapped portion of the manhole mass without using a cylindrical joint rubber, and a caulking material is filled in the connected portion. However, in this method, if the caulking material is not applied thickly, the reliability is increased. The work can take a lot of time and effort because it does not provide a waterproof
Work time will also be long. In addition, since the amount of the caulking material used increases, the economic loss is large. Therefore, even if there is a step on the outer surface of the side lump of the manhole or there is a large curved surface, the present invention can securely adhere to the connection part to ensure the water stopping effect. Further, it is an object of the present invention to provide a manhole socket capable of connecting a side block of a manhole and a pipe material with a simple construction.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed to achieve the above-mentioned object. Specifically, the present invention is a manhole socket for connecting a side mass of a manhole and a base end portion of a pipe. The manhole socket described above,
It has a cylindrical portion whose both ends are opened to allow the base end portion of the tube material to pass therethrough, and a sheet material provided in a flange shape outside the cylindrical portion, and the sheet material extends from the cylindrical portion to the outer edge. A plurality of folds are formed radially toward the fold, and an adhesive layer is formed on an outer surface of a fixing surface of the fold.

[0005]

When connecting a pipe material to a superposed portion of a manhole-side lump positioned at the upper side (for example, a middle lump) and a manhole-side lump positioned at the lower side (eg, a lower lump), Open a connection hole slightly larger than the outer diameter of the cylindrical part, insert the base end of the tube into the cylindrical part with the flanged sheet material, and if necessary, fasten a band to the outer surface of the cylindrical part. Then, the cylindrical portion and the pipe member are firmly connected to each other, and the distal end portion of the cylindrical portion is attached to the connection hole, and the fixing surface of the sheet material is adhered to the outer surface of the side block by the adhesive layer. In this case, the folds are expanded or shrunk so as not to generate doubles and wrinkles on the sheet material, and the sheet material is adhered while being leveled along the outer surface of the side mass. After that, the caulking material is filled into the gap between the tube material and the cylindrical portion, the connection between the outer edge of the sheet material and the outer surface of the side mass, and the gap between the tip portion of the tube material and the connection hole formed in the manhole mass. And seal it.

[0006]

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

The manhole socket 1 of the present invention has a cylindrical portion 2 and a sheet material 3 provided in a flange shape outside the cylindrical portion 2. The above-mentioned cylindrical portion 2 is a short cylindrical shape whose both ends are open, is formed of synthetic resin, synthetic rubber or the like, and has an annular raised portion 4 formed on the inner peripheral surface.

The above-mentioned sheet material 3 is formed of a material such as a synthetic resin or synthetic rubber which has flexibility and high weather resistance, waterproofness, and water resistance. A plurality of folds 7 are formed in parallel from the center connection hole 5 to be inserted toward the outer edge 6. The fold 7 described above is
A fixing surface 8 for forming an adhesive layer on an outer surface;
And a non-fixing surface 10 connected to the adjacent fixing surface 8 while being lifted up from the side edge through the bent portion 9. Therefore, the sheet material 3 can be freely expanded and contracted in the lateral direction by separating or abutting the adjacent fixing surfaces. The adhesive layer of the fixing surface 8 may be coated with an adhesive beforehand on the outer surface of the fixing surface 8 and applied with release paper, or the fixing surface 8 may be used at a manhole construction site.
May be coated with an adhesive.

The above-mentioned cylindrical portion 2 and sheet material 3 may be formed separately, and may be integrally formed by fitting the cylindrical portion 2 into the connecting hole 5 and bonding it. And may be integrally formed. In any case, the manhole socket 1 is constructed by providing the sheet material 3 in a flange shape outside the cylindrical portion 2 and providing a large number of radial folds 7 on the sheet material 3 in parallel.

The manhole socket 1 of the present invention has the above-mentioned structure, and particularly, a pipe material c is formed from an overlapping portion b of an upper mass a1 of the upper manhole and a lower mass a2 of the lower manhole. It is effective when used for connection.
, A band material 11 is wound around the outer periphery of the cylindrical portion 2 and fastened to connect the cylindrical portion 2 and the tube material c. And
A connection hole d slightly larger than the outer diameter of the cylindrical portion 2 is opened in advance or at the site at the overlapped portion b where the pipe c is connected, but a lower end flange a is formed on the outer surface of the lower end of the upper lump a1.
11 has an upper end flange a21 on the outer surface of the upper end of the lower lump a2.
Are provided in a protruding shape, so that the upper lump a1 and the lower lump a
When the two are superimposed on each other, a stepped portion e is formed at the overlapped portion b on the outer surface of the manhole-side lump by the both flange portions.

Therefore, the manhole socket 1 is exposed from the outside to the overlapping portion b of the upper-side mass a1 and the lower-side mass a2, and the distal end of the cylindrical portion 2 is joined with the distal end of the tube c by the connecting hole d. Insert the sheet material 3 inside,
While expanding or contracting the folds 7, the folds 7 are adhered to the outer surfaces of the upper mass a1, the lower flange a11, the lower mass a2, and the upper collar a21 in close contact. In this case, the fixing surface 8 of the fold 7
The adhesive layer is exposed or formed by peeling off the release paper or applying an adhesive on site, so it can be extremely easily attached to the outer surface such as the side lump, No wrinkles or dubbing occur.

After the sheet material 3 is adhered to the outer surface of the side lump or the like as described above, the first caulking material f1 is applied between the distal end portion of the cylindrical portion 2 and the outer surface of the tube material c. A second caulking material f2 is applied to the entire periphery of the outer end edge 6 of the material 3, and a second caulking material f2 is further applied to a gap surrounded by the connection hole d, the outer periphery of the tip portion of the tube material c and the inner surface of the manhole socket 1. 3
Is filled with the caulking material f3. If necessary, an adhesive may be applied to the inner surface of the cylindrical portion 2 in advance, and when the tube c is inserted, the space between the cylindrical portion 2 and the tube c may be adhered with the adhesive. These caulking materials can be made of epoxy resin, but those of epoxy resin solidify over time,
When an impact is applied to the upper-side mass a1 or the lower-side mass a2, the impact cannot be absorbed, and the impact is transmitted to the pipe material c, which may cause cracking or damage. Therefore, it is desirable to use a urethane-based resin caulking material that does not solidify even after a long period of time, because even if an impact is applied to the upper lump a1 or the lower lump a2, the shock is not absorbed and the pipe c is not damaged. . Therefore, the connection between the side mass of the manhole and the pipe material c can be stopped for a long time in the ground by the sheet material 3 and each caulking material.

Although the present invention has been described based on the embodiment of the drawings, the present invention is not limited to the above-described embodiment, and can be implemented in any manner unless the configuration described in the claims for utility model registration is changed. be able to. For example, in the embodiment shown in the drawings, an annular protruding portion is formed on the inner peripheral surface of the cylindrical portion. However, the protruding portion may be formed in a spiral shape, or may not be formed if unnecessary. .

[0014]

As described above, according to the present invention, there is provided a cylindrical portion having both ends opened to allow the base end portion of the tube to pass therethrough, and a sheet material provided in a flange shape outside the cylindrical portion. Since the sheet material has a radial fold from the cylindrical portion toward the outer edge and an adhesive layer is formed on the outer surface of the fixing surface of the fold, the sheet material is like a superposed portion of a manhole side mass. The sheet material can be reliably adhered to the connection portion in order to stop water even in a portion having a step or an uneven portion on the outer surface.
In addition, even if the pipe material is not perpendicular but inclined to the manhole-side mass, the folds of the sheet material can be sufficiently densely adhered by expanding or contracting the folds. It can be used well for lumps.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing a case where the mass is attached to an outer surface of a manhole-side lump.

FIG. 3 is an enlarged sectional view of a part of a sheet material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Manhole socket 2 Cylindrical part 3 Sheet material 4 Projection part 5 Connecting hole 6 Outer edge 7 Fold part 8 Fixing surface 9 Bending part 10 Non-fixing surface 11 Band material a1 Upper side mass a2 Lower side mass a11 Lower end flange portion a12 Upper end flange b Overlapping portion c Tube material d Connecting hole e Step portion f1 Caulking material f2 Caulking material f3 Caulking material

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Hiroyuki Sawatani Inventor Hirota Sawatani 691 Maruta, Kazatsukikuma-ji, Hakata-ku, Fukuoka-shi, Fukuoka Prefecture (56) References JP 50-28149 (JP, A) Sho 61-97485 (JP, U) Real opening Sho 62-112390 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A manhole socket for connecting a side lump of a manhole and a base end portion of a tube material, wherein a cylindrical portion having both ends opened to allow the base end portion of the tube material to pass therethrough; A sheet material provided in a flange shape on the outside of the
A manhole socket, wherein the sheet material has a radial fold from the cylindrical portion toward the outer edge, and an adhesive layer is formed on a fixing surface of the fold. 2. The manhole for a manhole according to claim 1, wherein the fold portion comprises a fixing surface to be attached to an outer surface of the side mass of the manhole, and a non-fixing surface positioned so as to rise from the fixing surface via a bent portion. socket. 3. The manhole socket according to claim 1, wherein the sheet material is formed of a material having flexibility, weather resistance, waterproofness, and water resistance.