JPH09296573A - Waterproofing devices for flat roofs, etc. - Google Patents

Abstract

(57) [Abstract] [Problem] A waterproof device that meets nonflammability standards,
Excellent waterproof property between the waterproof sheets, can absorb the thermal expansion and contraction of the waterproof sheets, can maintain the waterproof performance for a long period of time, and still improve the efficiency of on-site construction. SOLUTION: In a waterproofing device comprising a combination of rectangular synthetic resin-coated metal sheet waterproof sheets (1) and (2), a waterproof sheet (1) is attached to a fixing piece (5) fixed to a base surface. Is bonded to the side edge of the waterproof strip (3) by the first stretchable belt-like sheet, and the adjacent second waterproof sheet (2) and its side edges are stretchable second strip-like sheet. The belt-like sheets (3) and (4) that are joined in an airtight state by (4) and have stretchability on the upper surface of the joined portion.
A shield plate (7) made of a synthetic resin coated metal plate for covering the exposure of the above is attached.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof device for a flat roof or the like.

[0002]

2. Description of the Related Art Conventionally, in a waterproofing apparatus using a waterproof sheet for a flat roof, a plurality of rectangular waterproof sheets are arranged in a mutually adjacent state and are joined to adjacent waterproof sheets in an airtight state.

When the waterproof sheet is made of a soft synthetic resin or the like, it has excellent waterproofness at the joint, but it cannot satisfy the non-combustibility standard for fire prevention. When it is made of a metal plate, it may be affected by changes in environmental temperature. Thermal expansion and contraction,
There have been problems such as corrugation and deformation of the metal plate and detachment of the joint portion or the fixing portion to the base.

In order to solve these problems, in recent years, a waterproof device in which a waterproof sheet made of a synthetic resin-coated metal plate is connected by a stretchable synthetic resin has been favorably used.
The synthetic resin-coated metal plate used here is a product in which a synthetic resin is relatively thinly coated, and which meets the so-called incombustibility standard. As a result, the waterproof device has excellent waterproof performance at the joint, can absorb the thermal expansion and contraction of the waterproof sheet, and can meet the nonflammability standard.

As a waterproof device using such a waterproof sheet made of PVC steel sheet, for example, as shown in FIG. 6, the waterproof sheets (12) and (13) of a synthetic resin-coated metal plate are provided at a predetermined distance from each other. In addition, the strip-shaped fixing pieces (14) are arranged between them at a predetermined interval from both the waterproof sheets, are fixed to the ground surface at a plurality of points, and have a stretchable synthetic resin strip sheet (15).
However, it is proposed to be placed over both the waterproof sheets, joined to the upper surface resin layers of the side edge portions of both the waterproof sheets in an airtight state, and joined to the upper surface resin layer of the fixed piece (Actual Fair 6-35014). No.). In addition, (16) is a shielding plate that covers the exposure of the strip-shaped sheet, which is a combustible material at the joints of both waterproof sheets, in order to meet the fire protection standard, and the lower surface of the side edge portion is a tubular packing (17) made of a soft resin. By being bonded to both of the waterproof sheets with the adhesive (18) via the, the thermal expansion and contraction of each is prevented.

According to this structure, the waterproof sheet (12),
When heat expansion and contraction occurs in (13), the tarpaulin is separated,
The difference between the thermal expansion and contraction along the side edge of the waterproof sheet and the expansion and contraction of the strip-shaped fixing piece (14) can be absorbed by the expansion and contraction of the strip-shaped sheet (15), and the detachment of the waterproof joint surface and the occurrence of waviness are suppressed. be able to. Further, the strip-shaped sheet is joined to the synthetic resin layers of the waterproof sheets (12) and (13) to be in an airtight state, whereby the waterproof sheet (12),
The waterproof property between (13) is also sufficiently secured.

[0007]

In the waterproof device as described above, the synthetic resin belt-like sheet absorbs the difference in thermal expansion and contraction between the fixing portion and the waterproof sheet of the synthetic resin-coated metal plate and has a waterproof function. It is characterized by that.

The thermal expansion and contraction of the waterproof sheet will occur not only during the seasons but also during the daytime and at night during the day, and for a long period of time, the belt-like sheet will undergo a huge number of times of thermal expansion and contraction. It has been absorbed. In particular, with respect to the expansion and contraction along the side edge portion, since the fixed portion does not expand and contract, the longer the side edge portion of the waterproof sheet, the greater the difference in thermal expansion and contraction at the end portion.

Therefore, in the waterproof device as described above, when the band-shaped sheet is easily fatigue-deteriorated due to absorption of thermal expansion and contraction for a long period of time and cracks or breaks occur, the band-shaped sheet also has a waterproof function, and therefore, immediately. There was a problem of leading to water leakage.

Further, in the above waterproof device, the waterproof sheet, the connecting piece, and the fixing piece must be joined on site, which requires a lot of labor for the construction work.

An object of the present invention is to solve the above-mentioned problems and to provide a waterproofing device which satisfies a nonflammable standard by using a waterproofing sheet made of a synthetic resin coated metal plate which satisfies a nonflammable standard such as a vinyl chloride steel plate, and which is used between the waterproof sheets. It has excellent waterproofness, can absorb the thermal expansion and contraction of the waterproof sheet, can maintain the waterproof performance for a long time, and can also improve the efficiency of on-site construction.
To provide a waterproofing device for a flat roof or the like.

[0012]

In order to solve the above-mentioned problems, a waterproof device for a flat roof or the like according to the present invention is a waterproof device comprising a combination of rectangular synthetic resin coated metal plates, wherein the waterproof sheet has side edges thereof. Stretchable first bonded to
Is joined to the fixing piece fixed to the base surface by the strip-shaped sheet, and the adjoining waterproof sheet and the side edge portions thereof are joined in the airtight state by the elastic second strip-shaped sheet, and It is characterized in that a shield plate of a synthetic resin-coated metal plate for covering the exposure of the strip-shaped sheet is attached to the upper surface of the joint portion.

As a result, the elastic second band-shaped sheet for joining the side edge portions of the adjacent waterproof sheets is joined to the waterproof sheets instead of being joined to the fixing piece.
In particular, the thermal expansion and contraction along the side edge of the waterproof sheet is uniformly absorbed, so that fatigue deterioration is reduced and the durability of waterproof performance can be improved.

When installing the strip-shaped sheet, the first strip-shaped sheet joined to the fixing piece is attached to one of the waterproof sheets.
By joining the second strip-shaped sheet that is joined to the waterproof sheet to the other waterproof sheet in advance at the factory etc., in the field construction, the fixing piece is fixed to the lower ground and the strip-shaped sheet is used once. It is only necessary to join the sheet to the waterproof sheet, and it is possible to take a construction method that greatly reduces the troublesome joining work in the field.

Further, by using the shielding plate, the exposure of the second strip-shaped sheet which is the combustible material at the joint portion of the waterproof sheet is covered and the fireproof standard is satisfied and the aesthetic appearance of the entire waterproof device is improved.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. In the waterproof device according to the first embodiment shown in FIGS. 1 and 2, (1) and (2) are waterproof sheets, (3) is a first strip-shaped sheet, (4) is a second strip-shaped sheet, ( 5) is a fixing piece, and (6) is a fixing nail. Furthermore, (7) is a shield plate,
(8) is a tubular packing for joining the waterproof sheet and the shielding plate, and (9) is an adhesive. FIG. 1 shows how to put the waterproof device in place, and FIG. 2 shows how to put it in the case of using a waterproof sheet, a belt-like sheet and a fixing piece that have been joined in advance in a factory or the like in order to improve the efficiency of on-site construction.

The waterproof sheets (1) and (2) are synthetic resin-coated metal plates having a synthetic resin layer on both sides, and meet the nonflammability standard. The synthetic resin-coated metal plate used here, the synthetic resin layer can be preferably used those made of a thermoplastic resin such as polyvinyl chloride resin, polyethylene resin, polypropylene resin, among others, polyvinyl chloride resin-coated metal plate, It can be used more preferably because it is easily available and can be welded at the time of joining.

The first strip-shaped sheet (3) and the second strip-shaped sheet (4) are made of a thermoplastic synthetic resin sheet such as soft polyvinyl chloride or a non-vulcanized rubber sheet, and have a predetermined width. However, when a polyvinyl chloride resin-coated metal plate is used for the waterproof sheet, it is preferable to use a soft polyvinyl chloride resin because welding can be performed for joining.

The fixing piece (5) is formed in a band shape having a predetermined width,
The material is not particularly limited as long as it has sufficient strength for fixing, but a synthetic resin-coated metal plate having a polyvinyl chloride resin layer coated on at least the surface for joining the strip-shaped sheets is preferable because it can be welded.

The fixed nail needs to be selected depending on the material of the base material, but an open leg nail, a curl plug or the like, or a wood screw, a nail or the like when the base material is made of wood is used.

The shielding plate (7) is the waterproof sheet (1),
Similar to (2), the strip-shaped plate is coated with a synthetic resin layer on both sides and is a synthetic resin-coated metal plate conforming to the incombustibility standard, and the width is set so as to completely cover the exposure of the strip-shaped sheet.
Incidentally, it is desirable that both side edges of the shield plate (7) are folded inward for safety and aesthetic reasons. The tubular packing (8) is made of synthetic resin such as soft vinyl chloride or synthetic rubber, and has a function of absorbing heat expansion and contraction of the waterproof sheet and the shielding plate as a whole.

The above member is formed into a waterproof device as follows. First, in order to save labor in on-site construction, the waterproof sheet (1) and the fixing piece (5) are bonded to the first strip-shaped sheet (3) in advance at a predetermined interval in a factory or the like. This interval has a width of, for example, 5 to 60 mm so that the first belt-like sheet (3) can sufficiently absorb the thermal expansion and contraction of the waterproof sheet.
Similarly, the waterproof sheet (2) and the second strip-shaped sheet (4) are also joined in advance at the factory.

Bonding with these may be achieved by using a silicone-based, urethane-based, rubber-based adhesive or the like, but preferably, the bonding surfaces of the waterproof sheets (1) and (2), the belt-shaped sheets (3) and (4). ), The joining surface of the fixing piece (5), the shield plate (7)
It is preferable from the viewpoint of strength and airtightness that the joining surface and the tubular packing are made of polyvinyl chloride resin for welding. For this welding, any of solvent welding, hot air welding, high frequency welding, and welding using an adhesive obtained by dissolving polyvinyl chloride resin in a solvent are possible.

In the field, first, the waterproof sheet (1) to which the first strip-shaped sheet (3) and the fixing piece (5) are joined is set at a predetermined position for allocation, and the fixing piece portion is fixed with the fixing nail (6). Fix with a predetermined interval. Then, the waterproof sheet (2) to which the second strip-shaped sheet (4) is joined is joined to the waterproof sheet (1).

Next, the tubular packing (8) is attached to the waterproof sheet via the adhesive (9), and the tubular packing (8) and the shielding plate (7) are attached via the adhesive.

In this way, the entire base surface is covered with a plurality of waterproof sheets. The number, size, shape, etc. of the waterproof sheets to be used can be variously changed depending on the size, shape, etc. of the flat roof. Further, the types of the belt-shaped sheet, the fixing pieces, and the joining positions, which are joined in advance in a factory or the like, can be changed by allocating the waterproof sheet or the like.

The waterproof device formed as described above is
Since the surface resin layers of the waterproof sheets (1) and (2) and the second strip-shaped sheet (4) are airtightly joined, they have a reliable waterproof performance.

With respect to the thermal expansion and contraction of the waterproof sheet, the thermal expansion and contraction of the waterproof sheets (1) and (2) toward and away from each other is absorbed by the second belt-like sheet (4), and the waterproof sheet (1 The thermal expansion and contraction in the side edge part along the side edge portion is absorbed by the first strip-shaped sheet (3) and the second strip-shaped sheet (4).

Since the first strip-shaped sheet (3) is connected to the fixing piece and the heat-sealing waterproof sheet, the fatigue deterioration is greatest, but since the first strip-shaped sheet (3) is not related to the waterproof function, even if it is destroyed due to the fatigue deterioration. No water leak will occur. In the second strip-shaped sheet (4), since the waterproof sheets (1) and (2) expand and contract in the same manner, absorption of the thermal expansion and contraction is dispersed in the entire second strip-shaped sheet (4) and fatigue deterioration is reduced. It is a thing.

Of course, in the above embodiment, the first strip-shaped sheet (3) and the fixing piece (5) are used as the waterproof sheet (1), the second strip-shaped sheet (4) is used as the waterproof sheet (2), etc. Since it is joined by the above, it is possible to improve the efficiency of the on-site work by fixing the fixing piece and joining the second strip-shaped sheet (4) to the waterproof sheet (1).

In the second embodiment shown in FIG. 3, the waterproof sheet (1) is fixed by using, for example, a disc type fixing piece having a diameter of 20 mm instead of the strip-shaped fixing piece. Others are the same as the first embodiment. This structure can also exhibit the same effect.

Further, the joining position of the second strip-shaped sheet (3) to the waterproof sheet (1) is not necessarily limited to the lower surface, but the waterproof sheet (1) as in the third embodiment of FIG. It can also be bonded to the upper surface of the.

Further, as in the fourth embodiment of FIG. 5, the shield plate can be attached by an adhesive through a U-shaped synthetic resin sheet having a predetermined width and length.

[0034]

As described above, in the waterproof device for a flat roof or the like of the present invention, the belt-like sheet that connects the fixing piece and the heat-expandable waterproof sheet, which is the most easily damaged by fatigue deterioration, has only the fixing function. , To reduce water leakage accidents,
Further, by connecting the waterproof sheets to each other, the durability of the waterproof function can be improved.

Of course, the waterproof sheet, the belt-shaped sheet, and the fixing piece can be joined in advance in a factory or the like, and the work efficiency at the site can be improved.

Further, by using the shielding plate, it is possible to prevent the strip-shaped sheet which is a combustible material from being exposed, meet the fire prevention standard, and enhance the appearance of the waterproof device.

[Brief description of drawings]

FIG. 1 is a schematic view showing a housing of a waterproof device according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram showing how to house each member in the waterproof device of FIG.

FIG. 3 is a schematic view showing a housing of a waterproof device according to a second embodiment of the present invention.

FIG. 4 is a schematic view showing a housing of a waterproof device according to a third embodiment of the present invention.

FIG. 5 is a schematic view showing a housing of a waterproof device according to a fourth embodiment of the present invention.

FIG. 6 is a schematic diagram showing the fitting of a waterproof device according to a conventional example.

[Explanation of symbols]

 1, 2 Waterproof sheet 5 Fixing piece 3 First strip sheet 4 Second strip sheet 7 Shielding plate

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Seiichi Shibuya 3-10-1 Kita-ku Nishi, Kita-ku, Sapporo

Claims (2)

[Claims] 1. A waterproofing device comprising a combination of waterproof sheets of rectangular synthetic resin-coated metal plates, wherein the waterproof sheet is bonded to a fixing piece fixed to a base surface at a side edge portion thereof. And the adjacent waterproof sheet and its side edge portions are joined to each other in an airtight state by a stretchable second strip-shaped sheet, and the second strip is attached to the upper surface of the joined portion. A waterproof device for a flat roof or the like, characterized in that a shielding plate made of a synthetic resin-coated metal plate for covering the exposure of the strip-shaped sheet is attached. 2. The waterproof device according to claim 1, wherein the waterproof sheet and the strip-shaped sheet, or the waterproof sheet, the strip-shaped sheet and the fixing piece are joined in advance in a factory or the like. .