JP2004156397A - Waterproof sheet laying method, waterproof sheet fixing member and electromagnetic induction heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate positioning of a waterproof sheet in laying work while preventing the occurrence of wrinkles and distortion even after laying a waterproof sheet. <P>SOLUTION: In laying of this waterproof sheet, the sheet is positioned while mutually fitting a projecting part 3a formed in a bottom part of an electromagnetic induction heater 3 to a fitting object recessed part 1a formed in a central part position of a fixing member 1, and the laying is performed by fixing and joining the waterproof sheet 2 to the fixing member 1 by the action of the electromagnetic induction heater 3 by contacting both via the waterproof sheet 2. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a waterproof sheet laying method, a fixing member, and an electromagnetic induction heater, and more particularly, to a method of laying a waterproof sheet on a waterproof base of a structure such as a flat roof, and a fixing member and an electromagnetic induction heater used in the method. .
[0002]
[Prior art]
An electromagnetic induction heater is used as a method of laying a waterproof sheet made of synthetic resin or rubber on the outer surface (waterproof base) of a structure such as a flat roof of a building or other building to prevent infiltration of rainwater or the like. The laying method is excellent in workability and convenient. This method fixes and installs a fixing member in which the surface of a steel material capable of electromagnetic induction heating by high frequency is coated with a resin, for example, over the entire surface of a flat roof, using anchor nails or the like in a substantially grid pattern at a predetermined interval. After that, a wide waterproof sheet is placed so as to cover the entirety of these fixing members, and an electromagnetic induction heater is further placed on each fixing member, and the steel material as a conductor portion is heated by electromagnetic induction. As a result, the resin covering the steel material surface and the waterproof sheet are welded to each other, the waterproof sheet is fixed and joined via the fixing member, and the waterproof sheet is applied to the flat roof surface.
[0003]
In this case, in order to securely join the fixing member and the waterproof sheet, it is necessary to align the electromagnetic induction heater and the fixing member so that they do not shift. However, the position of the fixing member is estimated from the bulging shape of the waterproof sheet. When the positioning is performed, since the thickness of the fixing member (usually a thickness of several mm) is not so large, there is a possibility that a positional shift may occur, and it is difficult to reliably join the fixing member and the waterproof sheet.
[0004]
An invention as disclosed in Patent Document 1 has been proposed as an electromagnetic induction heater for waterproof sheet construction that prevents such displacement. In this electromagnetic induction heater, a guide having a diameter sufficiently larger than the periphery of the fixing member is provided at the bottom, and the fixing member is surrounded by the guide from the peripheral direction and fixed in position.
[0005]
[Patent Document 1]
JP, 10-140774, A [Problems to be Solved by the Invention]
However, although the above-described electromagnetic induction heater of the related art can prevent displacement, when the electromagnetic induction heater is arranged above the position corresponding to the fixing member and fixed in position, the waterproof sheet is guided by the thickness of the fixing member by the guide. Since the sheet is pulled and heated and welded under tension, internal strain due to the tension remains on the waterproof sheet, and after welding, irregular changes in the shape of the waterproof sheet, especially around the fixing member, such as wrinkles and distortions. This is inevitable, and there is a problem that the appearance is impaired. In particular, when a soft rubber-based sheet is used as the waterproof sheet, wrinkles, distortion, and the like are significantly generated.
[0006]
Accordingly, an object of the present invention is to provide a waterproof sheet laying method which is less likely to cause wrinkles, distortions, and the like even after the waterproof sheet is installed, and which can easily perform alignment at the time of installation, and a method for laying the waterproof sheet. It is an object of the present invention to provide a fixing member and an electromagnetic induction heater used for the above.
[0007]
[Means for Solving the Problems]
The above object is achieved by the invention described in each claim. That is, the characteristic configuration of the method for laying a waterproof sheet according to the present invention is such that a fixing member made of a conductor coated with a material to be joined is fixed and installed on a waterproof base of the structure, and the fixing member is covered. A waterproof sheet that can be joined to the material to be joined is placed on a waterproof base, an electromagnetic induction heater is placed at a position corresponding to the installation of the fixing member, and the electromagnetic induction heater heats the conductor material of the fixing member. In the method of fixing and joining the material to be joined and the waterproof sheet by
The fitting recess formed at the center portion of the fixing member is positioned while fitting the projection formed on the bottom of the electromagnetic induction heater to each other, and brought into contact with each other via the waterproof sheet. And fixing and joining the waterproof sheet to the fixing member by the action of the electromagnetic induction heater.
[0008]
According to this configuration, the waterproof sheet disposed on the fixing member is not positioned by abutting the inner peripheral surface of the guide from the periphery thereof as in the related art, and both the electromagnetic induction heater and the fixing member are positioned. Since the method adopts the method of fitting and positioning the center part of the fixing member, even if a soft rubber-based sheet is used as the waterproof sheet, it is ensured that the shape change such as wrinkles and distortions occurs around the fixing member. Can be prevented. Moreover, it is easy to perform positioning during construction.
[0009]
As a result, it is possible to provide a waterproof sheet laying method in which wrinkles, distortions, and the like are less likely to occur even after the waterproof sheet is installed, and the alignment at the time of the installation is easy.
[0010]
When fitting the fitting concave portion of the fixing member and the convex portion of the electromagnetic induction heater, a gap that is somewhat larger than the thickness of the waterproof sheet to be interposed therebetween is formed between them. preferable.
[0011]
According to this configuration, the operation of moving the electromagnetic induction heater downward from above and bringing it into contact with the fitting concave portion of the fixing member, and fitting the two together becomes easy and easy. In other words, if the gap is formed to be several mm wider than the thickness of the waterproof sheet and a so-called play is provided, no excessive force is applied to the waterproof sheet.
[0012]
Further, the characteristic configuration of the fixing member according to the present invention is a fixing member used in the method of laying a waterproof sheet according to claim 1 or 2, wherein a side of the structure that contacts the waterproof base has a conductor material, and the upper surface thereof has A material to be joined that can be joined to the waterproof sheet is covered, and is formed at the bottom of the electromagnetic induction heater when the electromagnetic induction heater is placed at the approximate center position via the waterproof sheet. The present invention is characterized in that a fitting concave portion that can be fitted to the convex portion is formed.
[0013]
According to this configuration, it is possible to provide a fixing member for use in a waterproof sheet laying method in which wrinkles, distortions, and the like are less likely to occur even after the waterproof sheet is applied, and alignment can be easily performed during the application.
[0014]
It is preferable that the fitted concave portion has a curved surface.
[0015]
According to this configuration, wrinkling, distortion, and the like are less likely to occur after the waterproof sheet is applied.
[0016]
Furthermore, a characteristic configuration of the electromagnetic induction heater according to the present invention has a convex portion that can be fitted to the fitted concave portion of the fixing member according to claim 3 or 4, and heats the conductor material of the fixing member. Then, the material to be joined and the waterproof sheet that constitute the fixing member can be fixed and joined.
[0017]
According to this configuration, it is possible to provide an electromagnetic induction heater used in a waterproof sheet laying method in which wrinkles, distortions, and the like are less likely to occur even after the waterproof sheet is installed, and the alignment at the time of application can be easily performed.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a planar structure of a fixing member 1 according to the present embodiment. The fixing member has a substantially disc shape as a whole, and is made of stainless steel as a conductor material on the side in contact with the waterproof base A of the structure, and can be joined to the rubber-based waterproof sheet 2 on the upper surface side in contact with the waterproof sheet 2. It has a two-layer structure in which a thermoplastic resin such as a polyester resin, which is a material to be joined, is coated by a method such as a hot melt method. As shown in FIG. 3, when the electromagnetic induction heater 3 is placed via the waterproof sheet 2, the center portion can be fitted to the projection 3 a formed on the bottom of the electromagnetic induction heater 3. A fitted concave portion 1a is formed. Since the waterproof sheet 2 is interposed between the convex portion 3a of the electromagnetic induction heater 3 and the fitted concave portion 1a, the distance between the two is equal to the thickness of the waterproof sheet 2 (generally, about several mm). And a gap (play) of several millimeters is preferably formed, and it is not always necessary to fit them exactly.
[0019]
Although not shown, the electromagnetic induction heater 3 is provided with, for example, a power switch, a power lamp, a temperature display, and the like on the outer surface, and a power circuit, a control device, and the like are incorporated therein. However, the type and type of the electromagnetic induction heater 3 are not limited.
[0020]
Hereinafter, a method of installing a waterproof sheet on a flat roof surface of a building as a waterproof base will be described.
[0021]
First, the fixing member 1 is installed at a predetermined position on a waterproof base in a substantially grid pattern at a predetermined interval. When the fixing member 1 is installed, the anchor nail 4 is driven into the waterproof base A and fixed in the through hole 1b formed at the center thereof. Next, a wide waterproof sheet is covered and arranged so as to cover the entire surface of the waterproof base on which the fixing member 1 is installed. Thereafter, as shown in FIG. 2, the electromagnetic induction heater 3 is placed on the waterproof sheet 2 at a position corresponding to the installation of the fixing member 1. In this case, the electromagnetic induction heater 3 can be dropped from above while being moved to the left and right to some extent so that the projection 3a of the electromagnetic induction heater 3 can be fitted into the fitted concave portion 1a of the fixing member 1, and alignment can be performed. At this point, the electromagnetic induction heater 3 is placed at a position corresponding to the fixing member 1.
[0022]
Then, the electromagnetic induction heater 3 is operated for a predetermined time to heat the conductive material of the fixing member 1 by the action, so that the thermoplastic resin on the upper surface of the fixing member 1 melts and becomes tacky, and this is the waterproof sheet. 2 and welded. When the joining is completed, forced air cooling or water cooling is performed using an appropriate tool or device to cool the heated portion.
[0023]
As described above, in the present embodiment, the convex portion 3a of the electromagnetic induction heater 3 is fitted and abutted with the fitted concave portion 1a, and is formed at the periphery of the fixing member 1 having a relatively large step. Since no tension acts on the waterproof sheet 2, even if a soft rubber-based waterproof sheet is used as the waterproof sheet 2, internal strain remaining on the waterproof sheet can be significantly reduced. As a result, surface defects such as wrinkles and distortions can be hardly generated on the surface of the waterproof sheet after construction.
[0024]
[Another embodiment]
(1) FIG. 4 shows a fixing member 10 according to another embodiment. The fixing member 10 has a one-stage slightly deeper concave portion 10a to be fitted, and the convex portion 13a of the electromagnetic induction heater 13 fitted with the concave portion 10a also protrudes somewhat higher. Even with such a configuration, while exhibiting substantially the same effect as the fixing member 1 shown in the above embodiment, the anchor nail has a nail head higher than the anchor nail 4 shown in FIG. Can be used.
[0025]
(2) FIG. 5 shows a fixing member 20 according to still another embodiment. The fixing member 20 has a structure in which the fitting concave portion 20 has a curved surface, and the projecting portion 23a of the electromagnetic induction heater 23 fitted with the concave portion 20 also has a curved surface. This configuration also has substantially the same effect as the fixing member shown in the above embodiment, and when this fixing member 23 is used, the contact with the waterproof sheet is smooth, and the waterproof sheet is more wrinkled, distorted, etc. Is difficult to be formed.
[0026]
(3) In the above-described embodiment, a disk-shaped fixing member is used. However, the outer shape of the fixing member is not limited to this. Other polygonal shapes may be used, and further elliptical shapes and other shapes may be used.
[0027]
(4) In the above-described embodiment, an example is shown in which a rubber-based waterproof sheet is used as the waterproof sheet. However, the present invention is not limited to this, and a waterproof sheet made of polyvinyl chloride or other resin may be used.
[0028]
(5) In the above embodiment, an example was given in which stainless steel was used as the conductor material of the fixing member. However, the present invention is not limited to this. Galvanized steel sheets, other general steel materials, copper plates, aluminum plates, and clad materials thereof And the like, and in essence, any conductive material may be used.
[Brief description of the drawings]
FIG. 1 is a plan view of a fixing member according to the present invention. FIG. 2 is a cross-sectional view of a main part illustrating construction by a method of laying a waterproof sheet according to the present invention. FIG. 3 is a combination of a fixing member and an electromagnetic induction heater in FIG. FIG. 4 is a cross-sectional view showing a fixing member of another embodiment. FIG. 5 is a cross-sectional view showing a fixing member of another embodiment.
1, 10, 20 Fixing members 1a, 10a, 20a Recessed recess 2 Waterproof sheet 3, 30 Electromagnetic induction heaters 3a, 30a Convex portion A Waterproof base

Claims (5)

A fixing member made of a conductor coated with a material to be joined is fixed and installed on the waterproof base of the structure, and a waterproof sheet that can be joined to the material to be joined is arranged on the waterproof base so as to cover the fixing member. Then, an electromagnetic induction heater is placed at a position corresponding to the installation of the fixing member, and the conductor sheet of the fixing member is heated by the electromagnetic induction heater to fix and join the joined material and the waterproof sheet. In the laying method of
The fitting recess formed at the center portion of the fixing member is positioned while fitting the projection formed on the bottom of the electromagnetic induction heater to each other, and brought into contact with each other via the waterproof sheet. And fixing the waterproof sheet to the fixing member by the action of the electromagnetic induction heater. When the fitting concave portion of the fixing member and the convex portion of the electromagnetic induction heater are fitted, a gap that is somewhat larger than the thickness of the interposed waterproof sheet is formed therebetween. 1. Waterproof sheet laying method. A fixing member used in the method for laying a waterproof sheet according to claim 1 or 2, wherein a side of the structure that contacts the waterproof base has a conductive material, and an upper surface thereof is covered with a material to be joined to the waterproof sheet. At the same time, when the electromagnetic induction heater is placed through the waterproof sheet at a substantially central position, a fitting concave portion that can be fitted to a convex portion formed at the bottom of the electromagnetic induction heater is formed. Fixing member. The fixing member according to claim 3, wherein the fitted concave portion has a curved surface. 5. The fixing member according to claim 3, wherein the fixing member has a convex portion that can be fitted into the fitting concave portion, and heats a conductor material of the fixing member to form a material to be joined and a waterproof sheet that constitute the fixing member. An electromagnetic induction heater that can be fixed and joined.

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