JP2001227121A - Opening peripheral structure of sheet waterproof structure and opening member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the drain-inlet peripheral structure of a sheet waterproof structure in which drain-inlet peripheral members extending over a drain pipe from a waterproof sheet can be joined mutually with sufficient strength even when the waterproof sheet is made of an olefin resin and the drain pipe of a vinyl chloride and excellent watertightness can be obtained. SOLUTION: The opening peripheral structure of the sheet waterproof structure has a drain inlet member 10 with a flange member 30, in which a sheet joining piece 32 is formed at one end of a cylindrical mounting clearance 31, and a connecting pipe 20 composed of a vinyl chloride resin. The flange member 30 consists of a laminated board 40 in which the second resin layer 42 made of the olefin resin is laminated on the rear side of the first resin layer 41 made of vinyl chloride through a resin holding layer 45. The cylindrical mounting clearance 31 of the flange member 30 is fitted externally and joined and fixed at one end of the connecting pipe 20. The connecting pipe 20 is connected to the drain pipe 3 made of vinyl chloride in a drain inlet while the second resin layer 42 of the sheet joining piece 32 is joined with the drain-inlet peripheral section of the waterproof sheet 5 comprising the olefin resin in the drain inlet member 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is suitably used in a sheet roof structure such as a water storage tank or a heat storage tank in addition to a flat roof on a building roof, a veranda, a balcony, and the like, in the vicinity of a supply / discharge port such as a drain portion. The present invention relates to an opening peripheral structure and an opening member of a waterproof sheet structure.

[0002]

2. Description of the Related Art In a sheet waterproof structure on a rooftop or the like of a building, only a required portion of a waterproof sheet is fixed to a skeleton, and most of the remaining portions are left free from the skeleton. Insulation methods are well known. Generally, a drain port structure such as a drain portion formed by the insulating method is configured such that a drain port member made of a synthetic resin molded product or the like having a flange portion formed at one end of a cylindrical portion is drained to the other end side of the cylindrical portion. Insert into the mouth and join and integrate with the drain pipe inside the drain port, and place the collar around the drain port on the body surface,
The flange and the peripheral edge of the drain port of the waterproof sheet are joined and integrated.

[0003] In such a sheet waterproof structure, a waterproof sheet, a drain port member and a drain pipe have conventionally been used.
Polyvinyl chloride resin is widely used, and the joining between the drain port member and the waterproof sheet and the joining between the drain port member and the drain pipe are performed by solvent welding or hot air welding. It is customary.

[0004] By the way, the waterproof sheet may be replaced due to aging or damage, but at the time of this repair, in consideration of cost and workability, the drain pipes and the like inside the frame are not changed, and the waterproof sheet and the drain port member are kept. It is common to replace only.

On the other hand, polyvinyl chloride resin products such as the above-mentioned waterproof sheet have a problem in incineration treatment at the time of disposal. There is an increasing demand for a waterproof sheet, and even in the sheet waterproof structure as described above, a waterproof sheet made of a polyolefin-based resin is often used instead of a polyvinyl chloride resin sheet.

[0006]

However, a sheet waterproof structure constructed using a polyvinyl chloride resin as a waterproof sheet, a drain port member, and a drain pipe has been proposed.
In the case of renovation work such as sheet replacement, if a waterproof sheet made of polyolefin resin is used and a drain port member made of polyvinyl chloride resin is used, bonding between the waterproof sheet and the drain port member However, there arises a problem that the bonding is made between different kinds of materials, and sufficient adhesive strength cannot be obtained, and it is difficult to obtain good watertightness.

[0007] Even if a drain port member made of a polyolefin resin of the same material as the waterproof sheet is used, the existing drain pipe disposed inside the drain port is still made of a polyvinyl chloride resin. Therefore, the joint between the drain port member and the drain pipe becomes a joint between different materials,
It becomes difficult to obtain sufficient adhesive strength, and as above,
The problem that good watertightness cannot be obtained arises.

Although the above description has been given of the case where repair work is performed when replacing a sheet, even when a waterproof sheet is newly laid, a drain pipe inside the drain port is made of polyvinyl chloride resin. When the waterproof sheet and the drain pipe are made of different materials, such as when a waterproof sheet made of a polyolefin resin is used, the same problem as described above occurs.

The present invention solves the above-mentioned problems of the prior art, and even when the waterproof sheet and the pipe such as the drain pipe are made of different materials, the members around the opening from the waterproof sheet to the pipe have sufficient strength to each other. It is an object of the present invention to provide an opening peripheral structure and an opening member of a waterproof sheet structure that can be joined securely with each other and obtain good watertightness.

[0010]

In order to achieve the above object, a first aspect of the present invention provides a waterproof sheet structure in which a waterproof sheet is laid on a surface of a frame having an opening except for the opening. The peripheral structure of the opening, comprising a flange member integrally formed with a flange-shaped sheet joining piece on the outer periphery of one end of the cylindrical mounting margin, and an opening member having a connection pipe made of a material different from the waterproof sheet, The flange member is formed of a laminated plate in which a first resin layer made of the same material as the connection pipe and a second resin layer made of the same material as the waterproof sheet are laminated and integrated via a resin holding layer. The peripheral edge of the center hole of the laminated plate is bent, and the cylindrical attachment margin is formed by the edge bent portion, and the sheet joining piece is formed by a portion other than the edge bent portion, and the cylindrical member in the flange member is formed. Before installation fee In a mode in which the first resin layer and the connection pipe are joined and fixed, the tubular mounting margin is fitted to the connection pipe, and the opening member is connected to the pipe inside the opening by inserting the connection pipe into the opening. And the sheet joining piece is arranged around the opening on the surface of the body, and the second resin layer of the sheet joining piece is joined to the peripheral edge of the opening of the waterproof sheet. .

In the structure around the opening of the waterproof sheet structure according to the first aspect of the invention, the material of the connecting pipe in the opening member is appropriately selected according to the material of the pipe and the like, so that the connecting pipe of the opening member and the pipe can be connected. Can be securely connected,
Since the second resin layer of the flange member and the waterproof sheet in the opening member can be securely joined by joining between the same materials,
The opening peripheral members from the pipe to the waterproof sheet can be securely joined to each other with sufficient adhesive strength.

In the first invention, it is preferable that the flange member of the opening member and the waterproof sheet are made of a polyolefin resin. That is, in this case, it is possible to more reliably join the opening member and the waterproof sheet while dechlorinating the waterproof sheet.

Further, in the first aspect of the present invention, it is preferable that the connection pipe of the opening member and the pipe are made of polyvinyl chloride resin. That is, in this case, the opening member can be more reliably connected to the conventional polyvinyl chloride resin pipe with sufficient adhesive strength.

On the other hand, the second invention specifies the main part of the opening peripheral structure of the first invention.

That is, the second aspect of the present invention is an opening member attached to the opening in a waterproof sheet structure in which a waterproof sheet is laid, except for the opening, on the surface of the frame having the opening, A flange member in which a flange-shaped sheet joining piece is integrally formed on one end outer circumference of a mounting margin, and a connection pipe made of a material different from the waterproof sheet, wherein the flange member is made of the same material as the connection pipe A resin layer and a second resin layer made of the same material as the waterproof sheet are formed by laminating and integrating through a resin holding layer;
The peripheral edge of the center hole of the laminated plate is bent, and the cylindrical bent portion forms the cylindrical mounting margin. The portion other than the bent portion forms the sheet joining piece. In a mode in which the first resin layer and the connection pipe are joined and fixed to each other, the cylindrical attachment allowance is fitted to one end of the connection pipe, and the connection pipe is inserted into the opening to open the connection pipe. While being connected to an internal pipe, the sheet joining piece is arranged around the opening on the surface of the skeleton, and the second resin layer of the sheet joining piece is joined to the opening peripheral portion of the waterproof sheet. Abstract

[0016]

1 and 2 are sectional views showing a structure around a drain on a building roof to which an embodiment of the present invention is applied, and FIGS. 3 and 4 are sectional views showing an opening member applied to the structure. It is a figure showing a drain port member (10). As shown in these drawings, a rooftop of a building as a seat waterproofing structure to which the present embodiment is applied is provided with a drain (2) as an opening in a frame (1) constituting a flat field. A drain pipe (3) made of polyvinyl chloride resin is buried as a pipe inside the drain port (2).

Further, a waterproof sheet (5) made of a polyolefin resin is applied to the surface of the frame (1) except for the drain port (2) by the above-mentioned insulating method.

In the present embodiment, the drain port member (10) as a supply / drain port member has a connection pipe (20) and a flange member (30).

The connecting pipe (20) is made of polyvinyl chloride resin of the same material as the drain pipe (3), and is formed in a size that can be inserted into the drain port (2) and the drain pipe (3). I have.

The flange member (30) has a cylindrical mounting margin (3).
1) and a flange-shaped sheet joining piece (32) formed on the outer periphery of one end of the attachment margin (31) so as to protrude outward.

This flange member (30) is shown in FIG.
As shown in (1), it is constituted by a laminated plate (40). The laminated plate (40) has a resin holding layer (45) as an intermediate layer, and on the upper surface side of the resin holding layer (45),
A first resin layer (41) made of a polyvinyl chloride resin is entangled with and fixed to the resin holding layer (45), and a second resin layer (41) made of a polyolefin resin is formed on the lower surface side of the resin holding layer (45). 42) are entangled and fixed to the resin holding layer (45).

Here, the resin holding layer (45) is made of any material as long as it is impregnated with the molten resin material as the first and second resin layers (41) and (42) and is entangled and fixed. It can be used, for example, a mesh sheet made of a metal such as stainless steel, copper, aluminum, iron, nickel, brass, gold, silver, or a punched sheet having a large number of holes, and a woven fabric or a nonwoven fabric made of a synthetic fiber A fiber complex such as a knitted fabric can be suitably used. In particular, the metal mesh sheet can secure the resin material with a sufficient adhesive strength and can also function as a support member of the flange member (30) to obtain a sufficient strength. It is preferred to use

In this embodiment, a central hole (46) is formed at a predetermined position of the laminated body (40) having the above structure, and the peripheral edge of the central hole is formed on the back side as shown in FIG. 5 (b). (A lower surface side), a cylindrical portion formed by the edge bent portion is configured as the cylindrical mounting margin (31), and a flat portion other than the cylindrical mounting margin (31) is replaced with the sheet. It is constituted as a joining piece (32).

Here, in the present embodiment, the inner diameter of the cylindrical mounting margin (31) is formed to correspond to the outer diameter of the connecting pipe (20). It is configured to be fittable. Further, a first resin layer (41) made of polyvinyl chloride resin is disposed on the inner peripheral surface side of the cylindrical mounting margin (31), and a second resin layer made of polyolefin resin is disposed on the outer peripheral surface side. (42) is arranged.

The cylindrical mounting margin (31) of the flange member (30) is externally fitted to the outer periphery of one end of the connection pipe (20), and in this state, the inner peripheral surface of the cylindrical mounting margin (31), that is, polychlorinated. The first resin layer (41) made of vinyl resin and the connection pipe (20) made of polyvinyl chloride resin are joined and integrated by solvent welding, hot air welding, or the like, thereby forming the drain port member (10). Is done.

In the present embodiment, as described below, waterproofing around the drainage port of the skeleton (1) is performed using the drainage member (10) having the above configuration.

That is, the connecting pipe (20) of the drain member (10) is inserted into the drain port (2) and fitted to the end of the drain pipe (3) in the drain port. Further, the connection pipe (20) is joined and fixed to the drain pipe (3) by solvent welding or hot air welding. Here, since the connection pipe (20) and the drain pipe (3) of the drain port member (10) are both made of polyvinyl chloride resin, they are easily and reliably joined and integrated with sufficient adhesive strength. be able to.

The sheet joining piece (32) of the flange member (30) in the drain port member (10) is arranged on the upper surface side of the drain port peripheral edge in the waterproof sheet (5), that is, the sheet joining piece (32). The second resin layer (42) and the waterproof sheet (5) are overlapped, and the second resin layer (42) of the sheet joining piece (32) and the waterproof sheet (5) are joined and fixed by hot air fusion or the like. . Here, since the second resin layer (42) and the waterproof sheet (5) of the sheet joining piece (32) are both made of polyolefin resin, they are easily and reliably joined and integrated with sufficient adhesive strength. can do.

As described above, according to the drain port peripheral structure of the present embodiment, the first resin layer (4) made of polyvinyl chloride resin is used.
A connection pipe (2) made of a polyvinyl chloride resin is provided on a first resin layer (41) of a flange member (30) in which 1) and a second resin layer (42) made of a polyolefin resin are laminated on both front and back surfaces.
0) is joined and fixed to form a drain port member (10), and the connection pipe (20) of the drain port member (10) is joined and fixed to a polyvinyl chloride resin drain pipe (3) inside the drain port. In addition, since the second resin layer (42) of the flange member (30) is joined and fixed to the polyolefin resin waterproof sheet (5), the drain pipe (3), the waterproof sheet (5), the drain port member ( 10) can be easily and reliably joined and integrated with each other with sufficient adhesive strength, and good watertightness can be obtained.

In the above embodiment, the cylindrical mounting margin (31) of the flange member (30) is changed to the connecting pipe (20).
Although the drain port member (10) is formed by externally fitting to the outside, the present invention is not limited thereto, and as shown in FIG.
The first resin layer (41) on the front side is formed of the same polyolefin resin as the waterproof sheet (5), and the second resin layer (42) on the rear side is formed of the same polyvinyl chloride resin as the drain pipe. The cylindrical mounting margin (31) of the flange member (30) is internally fitted inside the connection pipe (20), and the second resin layer (42) disposed on the outer peripheral surface of the cylindrical mounting margin (31). ) Is joined to the inner peripheral surface of the connection pipe (20), and the first resin layer (41) disposed on the upper surface side of the sheet joining piece (32) is joined to the lower surface of the waterproof sheet (5). Is also good. However, in the present invention, when the cylindrical attachment allowance (31) of the flange member (31) is fitted inside the connection pipe (20) and joined, the joining operation is difficult work inside the connection pipe. In contrast, the cylindrical mounting allowance (3
When 1) is fitted to the outside of the connecting pipe (20) and joined, the joining operation is easy work outside the connecting pipe.
Therefore, in the present invention, as shown in FIG. 6, the tubular fitting allowance (31) of the flange member (30) is more fitted than the structure shown in FIGS. It is better to adopt a structure in which the cylindrical mounting margin (31) is fitted outside the connection pipe (20) as in the embodiment.

In the above embodiment, the case where the present invention is applied to a flat rooftop of a building has been described. However, the present invention is not limited to this. For example, as shown in FIG.
By using an L-shaped sheet joining piece (32) of the flange member (30) as the drain port member (10) in a side view, the present invention is also applied to a corner between a flat field on a building roof and a parapet. be able to. Further, as shown in FIG. 8, the sheet joining piece (32) of the flange member (30) is softened so that the sheet joining piece (32) has an inner surface of a substantially arc-shaped drain groove or an inner surface of a substantially hemispherical drain recess. It can follow along with the waterproof sheet (5) laid on the curved surface (6). As described above, according to the present invention, it is possible to obtain a good finish even when the surface of the skeleton is not flat.

Further, in the above embodiment, the case where the present invention is applied to a sheet waterproof structure such as a building roof is described. However, the present invention is not limited to this, and in addition to a veranda and a balcony, a water storage tank and a heat storage tank can be used. It can be applied not only to the inner wall, but also to the area where the pipe is drawn out from the skeleton (around the pipe draw-out section), such as when installing piping for equipment, as well as around the water supply port, intake port, and exhaust port. be able to.

For example, when the present invention is applied to the vicinity of a pipe outlet, as shown in FIG. 9, a connection pipe (20) made of a polyvinyl chloride resin installed in a state of being pulled out from an opening (2) of a frame (1). ), The first resin layer (41) made of polyvinyl chloride resin of the flange member (30) is joined and integrated with the outer peripheral surface of the flange member (30), and the second resin layer made of polyolefin resin of the flange member (20) is formed. A waterproof sheet (5) made of a polyolefin resin may be joined and integrated with (42). In this case, the connecting pipe (20) may be configured as a part of the drawing pipe for the equipment, the drawing pipe may be fitted inside the connecting pipe (20), and further, the connecting pipe (20) may be formed. The drawing pipe may be separately connected to the end of ()).

In the above embodiment, as the flange member of the drain port member, the first resin layer is made of a polyvinyl chloride resin and the second resin layer is made of a polyolefin resin. The first resin layer may be made of the same material as the connection pipe, and the second resin layer may be made of the same material as the waterproof sheet.

The material and the like of the connecting pipe of the opening member may be appropriately selected according to the material and the like of the pipe such as the drain pipe. For example, in addition to the above-mentioned polyvinyl chloride resin, a synthetic resin such as a polyolefin resin may be used. Resins made of resin or the like can be used. In the present invention, however, it is preferable that the connection pipe be made of the same material as the pipe in order to secure a sufficient connection strength between the connection pipe and the pipe.

The present invention can of course be applied to a repair work such as replacing an existing waterproof sheet, and can also be applied to a new work such as laying a new waterproof sheet. Further, when the present invention is applied at the time of repair work, an opening member before repair may be left, and a flange member or a connection pipe of a new opening member may be joined to the opening member.

[0037]

As described above, according to the opening peripheral structure of the waterproof sheet structure of the first invention, different types of first and second sheets are provided.
A connecting pipe made of the same material as the resin layer is joined and fixed to the first resin layer of the flange member having the resin layer laminated on the front and back sides to form an opening member, and the connecting pipe of the opening member is joined to the piping inside the opening. In addition to fixing, the second resin layer of the flange member is bonded and fixed to a waterproof sheet made of the same material as the resin layer. Therefore, the material and the like of the connection pipe in the opening member are appropriately selected according to the material and the like of the pipe. Thereby, the connection pipe of the opening member and the pipe can be reliably connected, and the second resin layer of the flange member and the waterproof sheet in the opening member can be securely joined by joining the same kind of material. The working peripheral members can be reliably joined to each other with sufficient adhesive strength, and good watertightness can be obtained.

In the first aspect of the present invention, when both the second resin layer of the flange member and the waterproof sheet are made of a polyolefin resin, the waterproof sheet and the opening member are formed while dechlorinating the waterproof sheet. There is an advantage that bonding can be performed more reliably.

In the first aspect of the present invention, when both the connection pipe and the pipe are made of polyvinyl chloride resin, the opening member is attached to the conventionally used polyvinyl chloride resin pipe with sufficient adhesive strength. Since the connection can be made more reliably, there is an advantage that it can be suitably used for repairing a waterproof sheet structure in which, for example, a pipe made of polyvinyl chloride resin is embedded.

The opening member of the waterproof sheet structure according to the second aspect of the present invention specifies the main part of the opening peripheral structure according to the first aspect of the present invention, so that the same effects as above can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure around a drain port on a building roof to which an embodiment of the present invention is applied.

FIG. 2 is an exploded cross-sectional view illustrating a drainage port peripheral structure of the embodiment.

FIG. 3 is a perspective view showing a drain port member applied to the drain port peripheral structure of the embodiment.

FIG. 4 is an exploded perspective view showing a drain port member of the embodiment.

FIG. 5 is an enlarged cross-sectional view showing a laminated plate constituting a flange member in the drain port member of the embodiment, and FIG.
FIG. 4 is a diagram showing a state before bending the peripheral edge of the central hole, and FIG. 4B is a diagram showing a state after bending the peripheral edge of the central hole.

FIG. 6 is a perspective view showing a drain port member applicable to a drain port peripheral structure according to a first modification of the present invention.

FIG. 7 is a perspective view showing a drain port member applicable to a drain port peripheral structure according to a second modification of the present invention.

FIG. 8 is a sectional view showing a structure around a drain port according to a third modification of the present invention.

FIG. 9 is a sectional view showing a structure around an opening according to a fourth modification of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Body 2 ... Drainage port (opening) 3 ... Drainage pipe (piping) 5 ... Waterproof sheet 10 ... Drainage port member (opening member) 20 ... Connection pipe 30 ... Flange member 31 ... Cylindrical mounting margin 32 ... Sheet joining piece 40 ... Laminated plate 41 ... First resin layer 42 ... Second resin layer 45 ... Resin holding layer 45 ... Center hole

Claims (4)

[Claims] 1. A peripheral structure of an opening of a waterproof sheet structure in which a waterproof sheet is laid on a surface of a body having an opening except for the opening, wherein a flange is formed on an outer periphery of one end of a cylindrical mounting allowance. A flange member formed integrally with the sheet joining piece, and an opening member having a connection pipe made of a different material from the waterproof sheet, wherein the flange member has a first resin layer made of the same material as the connection pipe. A second resin layer made of the same material as the waterproof sheet is laminated and integrated via a resin holding layer, and the peripheral edge of the center hole of the laminated plate is bent, and the edge bent portion forms While the cylindrical mounting margin is formed,
The sheet joining piece is formed by a portion other than the edge bent portion, and the tubular attachment allowance is connected to the first resin layer and the connection pipe of the flange attachment allowance in the flange member. The connection member is inserted into the opening and connected to a pipe inside the opening, and the sheet joining piece is disposed around the opening on the body surface, and the opening member is joined to the opening member. An opening peripheral structure of a waterproof sheet structure, wherein a piece of the second resin layer is joined to a peripheral edge of the opening of the waterproof sheet. 2. The structure around an opening of a waterproof sheet structure according to claim 1, wherein the second resin layer of the flange member in the opening member and the waterproof sheet are made of a polyolefin resin. 3. The structure around an opening of a waterproof sheet structure according to claim 1, wherein the connection pipe of the opening member and the pipe are made of polyvinyl chloride resin. 4. An opening member attached to the opening of a waterproof sheet structure having a waterproof sheet laid thereon except for the opening on the surface of the body having the opening. A flange member integrally formed with a brim-shaped sheet joining piece; and a connection pipe made of a different material from the waterproof sheet, wherein the flange member is made of a first resin layer made of the same material as the connection pipe; A second resin layer made of the same material as the waterproof sheet is laminated and integrated with a resin holding layer interposed therebetween, and a peripheral portion of a center hole of the laminated plate is bent. As the mounting allowance is formed,
The sheet joining piece is formed by a portion other than the edge bent portion, and the tubular attachment allowance is connected to the first resin layer and the connection pipe of the flange attachment allowance in the flange member. Fitted to one end of a pipe, the connection pipe is inserted into the opening and connected to the pipe inside the opening, and the sheet joining piece is arranged around the opening on the body surface, and the sheet joining piece is An opening member for a waterproof sheet structure, wherein the second resin layer is configured to be joined to an opening peripheral portion of the waterproof sheet.