JPH0671665U - Tarpaulin fixing structure - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a waterproof sheet fixing structure that secures watertightness and is easy to install by arranging a sealing material on the surface of the fixing plate on the waterproof sheet side. [Structure] The fixing plate 3 is arranged on the waterproof sheet 1 laid on the base 2, and the fastening material 5 is passed through the fixing plate 3 and the waterproof sheet 1 from above the fixing plate 3 to form the base 2. In the fixing structure of the waterproof sheet 1 which is fixed by driving, the sealing material 4 is interposed between the fixing plate 3 and the waterproof sheet 1 so as to be in close contact with the fastening material 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an insulating and waterproof structure used as a waterproof structure in cold regions and the like, and more particularly to a fixing structure of a waterproof sheet having an insulating and waterproof structure.

[0002]

[Prior art]

 Sheets made of elastomer such as rubber or resin are laid for waterproofing on rooftops and parking lots of buildings. Compared with asphalt waterproofing, this sheet waterproofing has the advantage that construction is easier. Generally, in waterproofing a sheet, an elastomeric sheet is fixed to the substrate with an adhesive or the like.The problem with such a waterproofing method is that the waterproof sheet is If the base material contains water during installation, when the water content of the base material evaporates due to a rise in temperature after the seat is installed, it will not be able to escape into the open air and will accumulate between the waterproof sheet and the base material. It means that the tarpaulin appears as a bulge.

[0003] In order to prevent such problems from occurring, normally, the sheets are laid while waiting for the days when there is no precipitation to become almost dry, but in cold regions, etc. Such a method cannot be used where it is rare to dry. Therefore, an insulating and waterproofing method is used as a method of laying a waterproof sheet in a place where it is particularly difficult to dry the groundwork. The insulation waterproof method is a method in which a fixing plate is placed on top of the waterproof sheet, and a fixing material such as nails is driven into the ground so as to penetrate the waterproof sheet without fixing the waterproof sheet to the underlying sheet. Is.

[0004]

[Problems to be solved by the device]

 In the case of the insulation and waterproof method, the waterproof sheet is not adhered to the base, so the sheet may float up due to the negative pressure of the wind when exposed to strong wind. In order to prevent the floating, the fixing plate and the fixing material are fixed at many places locally.

The fixing structure is as shown in FIG. 3, in which a fixing plate 33 is arranged on the waterproof sheet 31, and a fixing material 35 is penetrated through the waterproof sheet 31 to the base 32 to fix it. In order to prevent water from entering through the holes 36 through which the material 35 penetrates, a cover sheet 37 having a sufficient size to cover the fixing plate 33 is placed on the fixing plate 33 and the end portion of the cover sheet 33 and the waterproofing are covered. The sheet 31 is heat-sealed to measure the watertightness. However, providing a cover sheet to make the fixed part watertight is an extremely time-consuming task due to the large number of fixed parts, so it is extremely difficult to complete the laying of the sheet. There was a problem of spending a lot of time on.

Further, spending a great deal of time also leads to an increase in construction cost, and improvement has been desired so that construction can be performed more easily. Therefore, the present invention solves the above problems and places a fixing plate on the waterproof sheet laid on the base to penetrate the fixing material to the fixed band waterproof sheet and fix it by fixing it on the base Insulation type waterproof The purpose of the present invention is to provide a waterproof sheet fixing structure that ensures watertightness and excellent workability in the sheet fixing structure.

[0007]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention arranges a fixing plate on a waterproof sheet laid on a base, and through the fixing plate, a fastening material is passed through the fixing plate and the waterproof sheet. In a waterproof sheet fixing structure formed by driving and fixing to a base, a sealing material is interposed between the fixing plate and the waterproof sheet so as to be in close contact with the fastening material. According to a second aspect of the present invention, the fixing plate is provided with a donut-shaped groove on the surface side in contact with the waterproof sheet and around the through hole for driving the fastening material, and on the upper surface side, the fastening material is driven. A circular recess is provided in the through-hole portion, and the donut-shaped groove and the circular recess are filled with a sealing material. Further, according to claim 3, it is preferable to use a water expansion type sealing material as the sealing material.

[0008]

[Action]

 By interposing the sealing material between the fixed plate and the waterproof sheet, the gap between the fixed plate or the waterproof sheet and the fastening material and the gap between the fixed plate and the waterproof sheet are sealed, and the waterproof sheet penetrates. Water does not enter the substrate through the holes. Moreover, since the fixing plate does not need to be covered with the cover sheet, the construction is extremely simple.

[0009]

【Example】

 Hereinafter, the fixing structure of the waterproof sheet of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, the waterproof sheet fixing structure of the present invention comprises a waterproof sheet 1 laid on a base 2 and a sealing material 4 and a fixing plate 3 laminated in this order, and a fixing material 5 for fixing plate 3 and sealing material 4. Penetrates through and is fixed to the base 2. The sealing material 4 seals the gap between the fixed plate 3 and the waterproof sheet 1 and the gap between the fastening material 5 and the fixed plate 3, and the water is discharged from the through hole 6 provided for the purpose of fixing the waterproof sheet 1 to the base 2. It is designed not to enter the base 2 side.

The waterproof sheet 1 is used for ordinary insulation and waterproofing, and contains a thermoplastic resin which is a homopolymer or copolymer of polyvinyl chloride, polypropylene, polyethylene or the like, or a resin containing these as a main component. Examples thereof include a mixture of a proper amount of a rubber material such as ethylene / propylene / diene rubber, nitrile rubber, isoprene rubber and butadiene rubber, and chlorosulphonated polyethylene, chlorinated polyethylene and the like, the thickness of which is 1.0 to 2. 0 mm is used.

The fixing plate 3 is required to have a strength enough to fix a waterproof sheet to a base, and a metal such as an iron plate, a steel plate, a galvanized iron plate or the like, the surface of which is coated with a resin such as vinyl chloride is used. The shape is preferably a disc shape so as not to damage the waterproof sheet 1. The thickness of the fixing plate is 0.5 to 2.0 mm, and the width is 50 to 70 mm when the fixing plate 3 has a circular shape.

As the sealing material 4, unvulcanized or unvulcanized rubber is used, and it has excellent weather resistance, for example, ethylene-propylene-diene rubber (EPDM), butyl rubber (IIR), a blend of EPDM and IIR. It is preferable to use a material made of a material, and stearic acid, carbon black, an inorganic filler, ZnO and the like are appropriately added to the rubber component, if necessary. Further, the Mooney viscosity (ML _{1 + 4} 100 ° C.) of this rubber-based sealing material is preferably 10 to 40, and when the Mooney viscosity is less than 10 (ML _{1 + 4} 100 ° C.), thermal deformation is large and particularly at high temperature. There is a problem that sagging sometimes occurs, and if it is more than 40 (ML _{1 + 4} 100 ° C), the watertightness as a sealing material becomes poor, which is not preferable.

As the sealing material 4, modified silicone, polyurethane, etc. can be used in addition to the rubber-based ones described above. Also, if a water expansion type sealing material is used, it expands due to the intrusion of water. It can be said that the watertightness is high because the sealing property is improved. The water-swelling type sealing material is a highly water-absorbent resin used as a hygroscopic material. Basically, a hydrophilic polymer having an ionizable group (mainly -COONa group) is slightly cross-linked or a block segment replacing it, By introducing a hydrophobic group, etc., the entire resin is made into a reticulated structure, which is insoluble in water, but absorbs a large amount of water and enlarges. As an example, VA c obtained by reacting crosslinked PVA (polyvinyl alcohol) with a cyclic acid anhydride (maleic anhydride, phthalic anhydride, etc.) to introduce a carboxyl group into the side chain and at the same time generate a slight crosslinkage. -MMA-based resin, starch, cellulose graft-polymerized with acrylic acid by cross-linking with ethylene glycol or diethylene glycol as soda salt Starch-based resin, copolymer of polyacrylic acid and polyacrylic acid salt, and sodium styrene sulfonate And polyacrylic acid salt-based polymers such as sodium acrylate copolymers, water-soluble epoxy compounds, urethane compounds, sodium salts of isobutylene maleic anhydride copolymers, and the like.

When using a water-expansion type sealing material, it is preferable that the water expansion coefficient is about 10 to 100%. The thickness of the sealing material 4 is 0.5 to 2.0 mm. If the thickness is less than 0.5 mm, the filling amount is too small and the watertightness is insufficient, and if it exceeds 2.0 mm, the fixing plate It is not preferable because it protrudes beyond the width and disturbs the appearance, and affects the fixing property. Metal nails, screw nails, bolts, etc. are used as the fastening material 5. When using screw nails and bolts, it is necessary to provide female threads on the base side. Although the female screw on the lower ground side is not particularly shown, a plug made of resin or the like and having a female screw on the inner surface may be inserted into the hole provided in the base 12.

By adopting the above-mentioned structure, the watertightness can be maintained without installing a cover sheet on the fixed plate 3, so that the construction is simple. FIG. 2 shows a waterproof sheet fixing structure according to claim 2. In FIG. 2, the fixing plate 13 is arranged on the waterproof sheet 11 laid on the base 12, and the fixing plate 13 has a through hole 16 through which the fastening material 15 is inserted and the waterproofing is provided around the hole 16. A donut-shaped groove 17 is provided on the surface of the seat 11 side, and the sealing material 14a is filled in the donut-shaped groove 17. The sealing material 14a can prevent water from entering through the gap between the fixed plate 13 and the waterproof sheet 11. By providing the donut-shaped groove 17 in the previous period, a donut-shaped protrusion 17 is formed on the surface on the opposite side of the fixing plate 13, and the through hole 16 is a recess 18. The sealing material 14b is also filled in the recess 18 so that water does not enter through the gap between the fastening material 15 and the fixed plate 13.

In the case of this structure, unlike the seal material 14a, the sealing material 14b filled in the recess 18 of the fixing plate 13 is exposed on the surface, so that modified silicon or polyurethane having good weather resistance is used. It is preferable to use the sealing material. Further, when a water-expansion type sealing material is used for such a structure, the sealing material 14b filling the recess 18 is unsuitable because it is exposed on the surface, and the sealing material filling the doughnut-shaped groove 17 is not suitable. Used for 14a.

[0017]

[Effect of device]

 As described above, according to the present invention, in the structure for fixing the waterproof sheet in the insulating waterproof method used in the area where the ground is dry, such as in a cold region, in particular, in the claim 1, between the fixing plate and the waterproof sheet. According to the present invention, a donut-shaped groove is provided around the through hole on the side of the fixing plate that contacts the waterproof sheet, and a recess is provided on the opposite side of the through hole. Since the donut-shaped groove and recess are filled with sealing material, the gap between the fixed plate and the waterproof sheet and the gap between the fixing plate or waterproof sheet and the fastening material are sealed, Water does not enter the base. Since the fixing plate does not have to be covered with a cover sheet or the like to prevent water from entering, the construction is extremely simple and quick, and it is also advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a fixing structure for a waterproof sheet according to claim 1 of the present invention.

FIG. 2 is a cross-sectional view of a waterproof sheet fixing structure according to claim 2 of the present invention.

FIG. 3 is a cross-sectional view showing a conventional waterproof sheet fixing structure.

[Explanation of symbols]

 1 Waterproof Sheet 2 Base 3 Fixing Plate 4 Sealing Material 5 Fixing Material 6 Through Hole 11 Waterproof Sheet 12 Base Material 13 Fixing Plate 14a Sealing Material 14b Sealing Material 15 Fixing Material 16 Through Hole 17 Donut-shaped Groove 18 Cavity

Claims (4)

[Scope of utility model registration request] 1. A fixing plate is arranged on a waterproof sheet laid on the lower ground, and a fastening material is driven from above the fixing plate and penetrates at least the fixing plate and the waterproof sheet, and is fixed to the base. In the fixing structure for a waterproof sheet, the fixing structure for a waterproof sheet is characterized in that a sealing material is interposed between a fixing plate and the waterproof sheet so as to be in close contact with the fastening material. 2. A fixing plate is arranged on a waterproof sheet laid on the lower ground, and a fixing material is penetrated through the fixing plate and the waterproof sheet from above the fixing plate, and fixed to the base. In the fixing structure of the waterproof sheet, the fixing plate is provided with a donut-shaped groove on the surface side in contact with the waterproof sheet around the through hole into which the fastening material is driven, and on the upper surface side, the fastening material is driven. A fixing structure for a waterproof sheet, wherein a circular recess is provided in the through hole, and the donut-shaped groove and the circular recess are filled with a sealing material. 3. The fixing structure for a waterproof sheet according to claim 1, wherein the sealing material is a water expansion type sealing material. 4. The waterproof sheet fixing structure according to claim 2, wherein the sealing material with which the donut-shaped groove is filled is a water expansion type sealing material.