JP2021067039A - Waterproof structure - Google Patents

Abstract

To provide a waterproof structure having excellent waterproof property and excellent fire resistance.SOLUTION: A waterproof structure 10 of the present invention comprises: a heat insulating panel laying part 30 having a plurality of heat insulating panels 10 each having a rectangular flat plate shape in a plan view and having a through-hole 15 penetrating in a thickness direction, the plurality of heat insulating panels 10 being laid side by side in a long side direction and a short side direction, respectively; a fixing screw 9 which is inserted into the through-hole 15 and fixes the heat insulating panel laying part 30 to a house; a first fire-resistant sheet 2A which covers a boundary part between the heat insulating panels 10 adjacent to each other in the short side direction; a second fire-resistant sheet 2B which covers a boundary part between the heat insulating panels 10 adjacent to each other in the long side direction; a third fire-resistant sheet 2C which covers the head part of the fixing screw 9 inserted and fixed in the through-hole 15; and waterproof sheets 8A, 8B which covers a boundary part between the heat insulating panels 10 adjacent to each other in the short side direction via the first fire-resistant sheet 2A and a boundary part between the heat insulating panels 10 adjacent to each other in the long side direction via the second fire-resistant sheet 2B.SELECTED DRAWING: Figure 1

Description

The present invention relates to a waterproof structure.

Conventionally, as a sloping roof or a floor of a veranda, a house to which a heat insulating panel laying part in which a large number of heat insulating panels are laid is applied has been known. In this heat insulating panel laying portion, a large number of heat insulating panels are arranged in a matrix, and among adjacent heat insulating panels, one heat insulating panel has a recess at the end face to be abutted, and the other heat insulating panel is abutted. A convex portion is provided on the end surface, and the concave portion of one heat insulating panel and the convex portion of the other heat insulating panel are engaged with each other to connect the adjacent heat insulating panels.

The heat insulating panel laying portion constitutes a roof and a floor portion by being fixed to the purlins, purlins, rafters, and the like provided in the house by using fixing screws.

Further, in the heat insulating panel laying portion having such a configuration, a gap may be generated between adjacent heat insulating panels depending on the construction state. If there is a gap, rainwater or the like may enter the house through this gap and cause rain leakage. Therefore, it has been proposed to attach a band-shaped waterproof sheet so as to cover the gap to prevent rainwater or the like from entering (see, for example, Patent Document 1).

As described above, the heat insulating panel laying portion as described above is required to have excellent waterproofness, and similarly to this, it is required to have excellent fire resistance.

JP-A-2007-120248

An object of the present invention is to provide a waterproof structure having excellent fire resistance as well as excellent waterproofness.

Such an object is achieved by the present invention described in the following (1) to (8).
(1) A plurality of heat insulating panels having heat insulating properties, forming a rectangular flat plate in a plan view, and having a plurality of through holes penetrating in the thickness direction thereof are provided, and the plurality of heat insulating panels are provided with the long sides thereof. Insulation panel laying part laid side by side in the direction and the short side direction,
A fixing screw that is inserted through the through hole and fixes the heat insulating panel laying portion to the house,
A first fireproof sheet having fire resistance and covering the boundary between the heat insulating panels adjacent to each other in the short side direction among the heat insulating panel laying parts.
A second fireproof sheet having fire resistance and covering the boundary between the heat insulating panels adjacent to each other in the long side direction among the heat insulating panel laying parts.
A third fireproof sheet that has fire resistance and covers the head of the fixing screw that is inserted and fixed through the through hole formed in the central portion of the heat insulating panel.
The boundary portion between the heat insulating panels adjacent to each other in the short side direction via the first fireproof sheet and the boundary portion between the heat insulating panels adjacent to each other in the long side direction via the second fireproof sheet. A waterproof structure characterized by having a waterproof sheet to cover.

(2) The waterproof structure according to (1) above, wherein the first refractory sheet has a strip shape and covers a boundary portion between the heat insulating panels adjacent to each other in the short side direction along the long side direction.

(3) The heat insulating panel includes the through hole formed near the boundary between the heat insulating panels adjacent to each other in the short side direction.
The first fireproof sheet is inserted and fixed through the boundary portion between the heat insulating panels adjacent to each other in the short side direction and the through hole formed near the boundary portion between the heat insulating panels adjacent to each other in the short side direction. The waterproof structure according to (2) above, which collectively covers the head of the fixing screw.

(4) The waterproof sheet has a band-shaped first waterproof sheet, and the boundary portion between the heat insulating panels adjacent to each other in the short side direction is formed along the long side direction via the first fireproof sheet. The waterproof structure according to (2) or (3) above.

(5) The second fireproof sheet has a strip shape and covers the boundary between the heat insulating panels adjacent to each other in the long side direction along the short side direction. Described waterproof structure.

(6) The waterproof sheet has a band-shaped second waterproof sheet, and the boundary portion between the heat insulating panels adjacent to each other in the long side direction is formed along the short side direction via the second fireproof sheet. The waterproof structure according to (5) above.

(7) The heat insulating panels adjacent to each other in the short side direction have a concave portion formed at the edge of one of the heat insulating panels and a convex portion formed at the edge of the other heat insulating panel, and the concave portion and the convex portion are formed. It is engaged with the part and
The waterproof structure according to any one of (1) to (6) above, wherein the heat insulating panels adjacent to each other in the long side direction face each other with the edges of both heat insulating panels forming flat flat portions. ..

(8) The waterproof structure according to any one of (1) to (7) above, wherein the width of the first refractory sheet and the width of the second refractory sheet are the same.

According to the present invention, the waterproof structure can be provided with excellent fire resistance as well as excellent waterproof property.

It is a top view which shows 1st Embodiment of the waterproof structure of this invention. FIG. 5 is a cross-sectional view taken along the line AA in FIG. FIG. 5 is a cross-sectional view taken along the line BB in FIG. FIG. 5 is a cross-sectional view taken along the line CC in FIG. It is a partial plan view in part D in FIG. It is a top view which shows the 2nd Embodiment of the waterproof structure of this invention.

Hereinafter, the waterproof structure of the present invention will be described in detail based on the preferred embodiments shown in the accompanying drawings.
The waterproof structure 10 of the present invention has a heat insulating property, has a flat plate shape forming a rectangle in a plan view, and includes a plurality of heat insulating panels 1 having a plurality of through holes 15 penetrating in the thickness direction thereof. A heat insulating panel laying portion 30 in which the heat insulating panel 1 is laid side by side in the long side direction and the short side direction, a fixing screw 9 inserted through the through hole 15 and fixing the heat insulating panel laying portion 30 to the house, and fire resistance. Of the heat insulating panel laying portion 30, the first fireproof sheet 2A covering the boundary between the heat insulating panels 1 adjacent to each other in the short side direction, and the heat insulating panel laying portion 30 having fire resistance and having fire resistance. A second fireproof sheet 2B that covers the boundary between the heat insulating panels 1 adjacent to each other in the long side direction, and a fixing that has fire resistance and is inserted and fixed through a through hole 15 formed in the central portion of the heat insulating panel 1. The boundary between the heat insulating panels 1 adjacent to each other in the short side direction via the third fireproof sheet 2C covering the head of the screw 9 and the first fireproof sheet 2A, and the long side direction via the second fireproof sheet 2B. It has waterproof sheets 8A and 8B that cover the boundary portions between the heat insulating panels 1 adjacent to each other.

By making the waterproof structure 10 have such a configuration, the waterproof structure 10 exhibits excellent fire resistance as well as excellent waterproof property.

Hereinafter, a case where the waterproof structure of the present invention is applied to a sloping roof provided in a house will be described as an example.

<Waterproof structure>
<First Embodiment>
1 is a plan view showing a first embodiment of the waterproof structure of the present invention, FIG. 2 is a sectional view taken along line AA in FIG. 1, and FIG. 3 is a sectional view taken along line BB in FIG. 4 is a sectional view taken along line CC in FIG. 1, and FIG. 5 is a partial plan view of a portion D in FIG. In the following, for convenience of explanation, as shown in FIG. 1, the left-right direction in the figure is the x-axis direction, and the up-down direction is the y-axis direction. Further, the upper side in FIGS. 2 to 4 is "upper" or "upper", the lower side is "lower" or "lower", the front side of the paper in FIG. 5 is "upper" or "upper", and the back side of the paper is Sometimes referred to as "down" or "down". Further, the left side in FIG. 3 may be referred to as "downstream side" and the right side may be referred to as "upstream side".

As shown in FIG. 1, the waterproof structure 10 is applied to the roof 100 provided in the house, and in the present embodiment, the plurality of heat insulating panels 1 and the plurality of first fireproof sheets 2A are applied. , A plurality of second fireproof sheets 2B, a plurality of third fireproof sheets 2C, a plurality of first waterproof sheets 8A, a plurality of second waterproof sheets 8B, and a plurality of fixing screws 9. I have.

The roof 100 is provided so as to be inclined with respect to the horizontal direction for the purpose of ensuring good drainage. The inclination direction α is the same as the y-axis direction in FIG. Then, in the roof 100, the waterproof structure 10 is fixed to the main house 91 provided in the house, the purlins and rafters (not shown), that is, fixed to the house via the purlin 91, the purlins and rafters and the like. By being done, it functions as a roof.

Hereinafter, the configuration of each part of the waterproof structure 10 will be described.
As shown in FIG. 1, the heat insulating panel 1 has a flat plate shape having a rectangular shape in a plan view. A plurality of heat insulating panels 1 are laid side by side in the same direction in the short side direction and the long side direction to form a heat insulating panel laying portion 30, thereby forming a roof 100.

In this embodiment, the long side direction is parallel to the x-axis direction, and the short side direction is parallel to the y-axis direction. Although it depends on the size and shape of the roof 100, the number of heat insulating panels 1 laid in the x-axis direction and the number of heat insulating panels 1 laid in the y-axis direction may be the same. It may be different.

Each heat insulating panel 1 has the same laminated structure except that the arrangement location is different (see FIGS. 2 and 3). Hereinafter, a laminated structure of one heat insulating panel 1 will be typically described.

As shown in FIGS. 2 to 4, the heat insulating panel 1 is a laminated board having a resin layer 3, a metal layer 4a, a metal layer 4b, a resin layer 5a, and a resin layer 5b.

The resin layer 3 is made of, for example, polyurethane foam, and is a portion of the heat insulating panel 1 that exhibits heat insulating properties.

A metal layer 4a is laminated on the lower surface side of the resin layer 3, and a metal layer 4b is laminated on the upper surface side of the resin layer 3. The metal layer 4a and the metal layer 4b are made of various steel plates such as a galvalume steel plate (registered trademark) and a stainless steel plate, and are portions of the heat insulating panel 1 that exhibit environmental resistance (antiseptic properties).

The resin layer 3 is thicker than the metal layer 4a and the metal layer 4b, preferably, for example, twice or more and 100 times or less the thickness of the metal layer 4a (metal layer 4b), and is 50 times or more and 80 times or less. Is more preferable. In this case, for example, the thickness of the resin layer 3 can be about 35 mm, and the thickness of the metal layer 4a and the metal layer 4b can be about 0.5 mm, respectively.

The resin layer 5a and the resin layer 5b are, for example, films made of polyvinyl chloride. The resin layer 5a covers the metal layer 4a, and exhibits rust prevention and waterproofness to the metal layer 4a. The resin layer 5b covers the metal layer 4b, and exhibits rust prevention and waterproofness to the metal layer 4b.

As described above, the roof 100 is inclined with respect to the horizontal direction. Therefore, the heat insulating panel 1 constituting the roof 100 is also laid in the house in a posture inclined with respect to the horizontal direction. As a result, for example, rainwater or the like flows down from the upstream side (upper side of the inclined direction α) to the downstream side (lower side of the inclined direction α), so that the drainage property of the heat insulating panel laying portion 30, that is, the roof 100 is improved. To do. _{The inclination angle θ 1} (see FIG. 2) of the heat insulating panel 1 is not particularly limited.

Further, the heat insulating panel 1 has a rectangular shape in a plan view as described above, and its edge portion (outer edge portion) has an edge portion (first edge portion) 11 along the long side direction (x-axis direction). It can be divided into an edge portion (second edge portion) 12 and an edge portion (third edge portion) 13 and an edge portion (fourth edge portion) 14 along the short side direction (y-axis direction) (FIG. 1).

As shown in FIG. 2, the edge portion 12 is formed with a convex portion 6 projecting from the end surface constituting the edge portion 12 toward the right side in the drawing. The convex portion 6 is a convex strip formed along the long side direction, that is, from the front side to the back side of the paper surface in FIG.

Further, the edge portion 11 is formed with a recess 7 recessed from the end surface constituting the edge portion 11 toward the right side in FIG. The recess 7 is a groove formed along the long side direction, that is, from the front side to the back side of the paper surface in FIG. The depth of the concave portion 7 is preferably larger than the protruding amount of the convex portion 6.

Then, among the heat insulating panel laying portions 30, the heat insulating panels 1 adjacent to each other in the y-axis direction (short side direction) are engaged with the concave portion 7 of one heat insulating panel 1 and the convex portion 6 of the other heat insulating panel 1. can do. As a result, both heat insulating panels 1 are connected (joined) to each other, and thus the positional relationship with each other in the y-axis direction is regulated.

Further, both of these heat insulating panels 1 are inclined. Therefore, the heat insulating panel 1 located on the upper side in the inclination direction α presses the heat insulating panel 1 located on the lower side by gravity. As a result, the convex portion 6 is inserted into the concave portion 7 as deeply as possible, so that the engagement state between the convex portion 6 and the concave portion 7 becomes stronger.

Further, since the convex portion 6 is formed of the convex strip and the concave portion 7 is formed of the groove, the engagement state between the convex portion 6 and the concave portion 7 is further strengthened. Thereby, for example, it is possible to surely prevent the heat insulating panel 1 from being unintentionally removed due to a strong wind or the like, and thus the roof 100 can be used safely and comfortably.

As shown in FIG. 3, the edge portion 13, that is, the end surface forming the edge portion 13, is a flat portion flat along the short side direction, in other words, from the front side to the back side of the paper surface in FIG. It has become.

Further, similarly to the edge portion 13, the edge portion 14, that is, the end surface forming the edge portion 14, is also flat along the short side direction, in other words, from the front side to the back side of the paper surface in FIG. It is a flat part. Further, the edge portion 13 and the edge portion 14 having such a flat shape are each formed perpendicular to the plane direction of the heat insulating panel 1 in a plan view.

Then, among the heat insulating panel laying portions 30, the heat insulating panels 1 adjacent to each other in the y-axis direction (long side direction) have the edge portion 13 of one heat insulating panel 1 and the edge portion 14 of the other heat insulating panel 1 mutually. Facing each other.

Further, each heat insulating panel 1 is provided with a plurality of through holes 15 formed at substantially equal intervals. Then, a fixing screw 9 is inserted into each through hole 15, and the fixing screw 9 is screwed into a through hole having an internal screw provided in the purlin 91 of the house. As a result, each heat insulating panel 1, that is, the heat insulating panel laying portion 30, is fixed to the purlin 91, that is, the house by the fixing screw 9.

The first refractory sheet 2A covers the boundary portion between the heat insulating panels 1 adjacent to each other in the y-axis direction, that is, between the edge portion 11 and the edge portion 12, and in the present embodiment, the edge portion 11 of the heat insulating panel 1 It is a member that covers the head of the fixing screw 9 inserted into the through hole 15 formed in the vicinity of 12 (see FIG. 2). In other words, it can be said that the first refractory sheet 2A is integrally formed with a refractory sheet covering between the edge portion 11 and the edge portion 12 and a refractory sheet covering the fixing screw 9. .. Therefore, since it is not necessary to form the refractory sheet covering each of them as a separate body, it is possible to simplify the time and labor required to attach the refractory sheet.

Further, the second refractory sheet 2B is a member that covers the boundary portion between the heat insulating panels 1 adjacent to each other in the x-axis direction, that is, between the edge portion 13 and the edge portion 14 (see FIG. 3).

Further, the third refractory sheet 2C is a member that covers the head of the fixing screw 9 inserted into the through hole 15 formed near the central portion of the heat insulating panel 1 (see FIG. 3).

The first refractory sheet 2A, the second refractory sheet 2B, and the third refractory sheet 2C are each composed of a metal sheet containing a metal material as a main material. As a result, the first refractory sheet 2A, the second refractory sheet 2B, and the third refractory sheet 2C are each provided with fire resistance. Using such a first refractory sheet 2A, a second refractory sheet 2B, and a third refractory sheet 2C, between the edge portion 11 and the edge portion 12, the fixing screw 9, the edge portion 13 and the edge portion 14, respectively. By covering the space and the fixing screw 9, it is possible to impart excellent fire resistance to the heat insulating panel laying portion 30, and by extension, the house provided with the heat insulating panel laying portion 30.

The metal material is not particularly limited, and examples thereof include aluminum, nickel, stainless steel, copper, titanium, and tungsten, and these metals can be used alone or as an alloy. Among these, aluminum is preferable. As a result, excellent fire resistance can be imparted to the first refractory sheet 2A, the second refractory sheet 2B, and the third refractory sheet 2C.

Further, the first refractory sheet 2A, the second refractory sheet 2B, and the third refractory sheet 2C are each composed of a single layer of the metal sheet, and for example, a fiber layer is inserted in the middle in the thickness direction thereof. That is, the fiber layer (fiber sheet) may be sandwiched between the first metal layer and the second metal layer laminated in the thickness direction. This fiber layer is composed of an aggregate of fibers, and examples thereof include cloths such as woven fabrics and non-woven fabrics, and fiber sheets such as nets in which a plurality of lattices are formed by warp threads and weft threads. By providing such a fiber layer, strength (tear strength, tensile strength, etc.), durability (repeated fatigue resistance, etc.) and the like can be improved.

As shown in FIGS. 1 and 3, the first refractory sheet 2A has a strip shape. As a result, the boundary portions between the heat insulating panels 1 adjacent to each other in the y-axis direction can be collectively covered along the x-axis direction, that is, continuously. Therefore, it is possible to reliably prevent smoke, fire, and the like from being discharged through the boundary portion. Further, the width of the first refractory sheet 2A is set to a size that can include the through holes 15 formed in the vicinity of the edges 11 and 12 of the heat insulating panel 1. Therefore, when covering the boundary between the heat insulating panels 1 adjacent to each other in the y-axis direction with the first refractory sheet 2A, the head of the fixing screw 9 inserted and fixed through the through hole 15 is also covered collectively. Can be done. Therefore, it is possible to reliably prevent smoke, fire, and the like from being discharged through the boundary portion and the through hole 15.

Like the first refractory sheet 2A, the second refractory sheet 2B also has a strip shape. As a result, the boundary portions between the heat insulating panels 1 adjacent to each other in the x-axis direction can be collectively covered along the y-axis direction, that is, continuously. Therefore, it is possible to reliably prevent smoke, fire, and the like from being discharged through the boundary portion.

Further, as shown in FIG. 3, at the boundary portion between the heat insulating panels 1 adjacent to each other in the x-axis direction, both the edge portion 13 and the edge portion 14 to be abutted are formed of a flat surface. Therefore, depending on the construction state, a gap 20 may be formed, which may be larger or smaller. If there is a gap 20, smoke, fire, and the like are likely to be discharged from the gap 20, so that the fire resistance of the heat insulating panel laying portion 30 may decrease. Therefore, by attaching a strip-shaped second refractory sheet 2B so as to cover the gap 20, it is possible to accurately suppress or prevent the emission of smoke, fire, etc. from the gap 20, so that the heat insulating panel laying portion 30 Can exhibit excellent fire resistance.

The third refractory sheet 2C has a disk shape unlike the refractory sheets 2A and 2B. As a result, the fixing screw 9 inserted and fixed through the through hole 15 located in the central portion of the heat insulating panel 1 can be individually covered. Therefore, it is possible to reliably prevent smoke, fire, and the like from being discharged through the through hole 15.

The width _{W 2A} of the first refractory sheet 2A, the width _{W 2B} of the second refractory sheet 2B, in this embodiment, is the same (see Figure 1). Further, the thickness _{t 2A} of the first refractory sheet 2A, the thickness _{t 2B} of the second refractory sheet 2B, the same (see FIG. 2). Since both waterproof sheets have the same width and thickness, a common fireproof sheet can be used. As a result, it is possible to reduce the cost when constructing the waterproof structure 10 as compared with the case where the waterproof sheets having different widths and thicknesses are used for each waterproof sheet, for example. Further, the common waterproof sheet can be used regardless of whether it is used as the first fireproof sheet 2A or the second fireproof sheet 2B. As a result, workability when constructing the waterproof structure 10 is improved.

The width _{W 2A} of the first refractory sheet 2A is specifically preferably an extent more than 175mm below 50 mm, there is more preferably lower than about 75mm ultra 100 mm. Here, the through holes 15 formed in the vicinity of the edge portions 11 and 12 are usually arranged at positions where the separation distance between the through holes formed in the edge portions 11 and 12 is about 50 mm. As the fixing screw 9, a fixing screw 9 having a head diameter of about φ15 mm is selected. Therefore, in the setting the width W _2A of the first refractory sheet 2A sized to above, the boundary of the insulating panel 1 adjacent in the y-axis direction, when covered with the first refractory sheet 2A, The head of the fixing screw 9 inserted and fixed through the through hole 15 can be reliably included and covered.

Further, the diameter _{W 2C} of the third refractory sheet 2C is preferably on the order more than 125mm or less 20 mm in diameter, and more preferably in an extent less φ25mm super 60 mm. Here, as described above, as the fixing screw 9, a fixing screw 9 having a head diameter φ of about 15 mm is selected. Therefore, in the setting the diameter W _2C of the third refractory sheet 2C to the size as described above, it is possible to reliably cover the head of the fixing screw 9 which is fixed by inserting into the through hole 15.

In the present embodiment, the strip-shaped first fireproof sheet 2A covers between the edge portion 11 and the edge portion 12, and the strip-shaped second fireproof sheet 2B further covers the edge portion 13 and the edge portion 14. Although the case of covering between the edges 11 and the edge 12 is described, but not limited to such cases, the first refractory sheet 2A and the second refractory sheet 2B are located between the edge 11 and the edge 12, and the edge 13 and the edge, respectively. Any shape may be used as long as it can cover the space between the portions 14.

The first waterproof sheet 8A is a member that covers the boundary portion between the heat insulating panels 1 adjacent to each other in the y-axis direction, that is, between the edge portion 11 and the edge portion 12 via the first fireproof sheet 2A (FIG. 2). reference). By providing the first waterproof sheet 8A having such a configuration, it is possible to reliably prevent water such as rainwater from entering the inside of the house through the boundary portion.

Further, the second waterproof sheet 8B is a member that covers the boundary portion between the heat insulating panels 1 adjacent to each other in the x-axis direction, that is, between the edge portion 13 and the edge portion 14 via the second fireproof sheet 2B ( (See FIG. 3). By providing the second waterproof sheet 8B having such a configuration, it is possible to reliably prevent water such as rainwater from entering the inside of the house through the boundary portion.

The first waterproof sheet 8A and the second waterproof sheet 8B are each composed of a resin sheet containing a resin material as a main material. As a result, the first waterproof sheet 8A and the second waterproof sheet 8B are each waterproof.

The resin material is not particularly limited, and examples thereof include vinyl chloride-based resins such as polyvinyl chloride, polyolefin-based resins, ethylene-vinyl acetate copolymers, and the like, and one or more of these. Can be used in combination. Among these, a vinyl chloride resin is preferable. As a result, the first waterproof sheet 8A and the second waterproof sheet 8B have excellent heat-weldability and solvent-weldability. The first waterproof sheet 8A and the second waterproof sheet 8B are attached to the heat insulating panel 1, and as the method of attaching the first waterproof sheet 8A and the second waterproof sheet 8B, for example, a method by heat welding or a method by welding with a solvent is used. Therefore, it is preferable that the first waterproof sheet 8A has excellent heat-weldability and solvent-weldability in order to attach the first waterproof sheet 8A and the second waterproof sheet 8B to the heat insulating panel 1.

The vinyl chloride-based resin is not particularly limited as long as it is a polymer containing vinyl chloride, that is, an oligomer, a prepolymer, and a polymer. For example, a single polymer of vinyl chloride, vinyl chloride, vinyl acetate, and ethylene are used. , Or a copolymer with propylene or the like, or a mixture of two or more kinds of these polymers.

Further, the resin material may further contain various plasticizers, various stabilizers, various antioxidants, various ultraviolet absorbers, processing aids, lubricants, fillers, flame retardants, coloring materials and the like. In particular, it is preferable that a plasticizer is contained. Thereby, the first tarpaulin 8A and the second tarpaulin 8B can be made to have more excellent flexibility.

Further, the first waterproof sheet 8A and the second waterproof sheet 8B are each composed of a single layer of the resin sheet, and for example, a fiber layer is inserted in the middle in the thickness direction thereof, that is, that is, A fiber layer (fiber sheet) may be sandwiched between the first resin layer and the second resin layer laminated in the thickness direction. This fiber layer is composed of an aggregate of fibers, and examples thereof include cloths such as woven fabrics and non-woven fabrics, and fiber sheets such as nets in which a plurality of lattices are formed by warp threads and weft threads. By providing such a fiber layer, strength (tear strength, tensile strength, etc.), durability (repeated fatigue resistance, etc.) and the like can be improved.

As shown in FIG. 3, the first waterproof sheet 8A has a strip shape. As a result, the boundary portions between the heat insulating panels 1 adjacent to each other in the y-axis direction can be collectively covered along the x-axis direction, that is, continuously. Therefore, it is possible to reliably prevent rainwater or the like from entering from the boundary portion.

Like the first waterproof sheet 8A, the second waterproof sheet 8B also has a strip shape. As a result, the boundary portions between the heat insulating panels 1 adjacent to each other in the x-axis direction can be collectively covered along the y-axis direction, that is, continuously. Therefore, it is possible to reliably prevent rainwater or the like from entering from the boundary portion.

Further, as shown in FIG. 3, depending on the construction state, at the boundary portion between the heat insulating panels 1 adjacent to each other in the x-axis direction, both the edge portion 13 and the edge portion 14 to be abutted are formed of a flat surface. , More or less, a gap 20 may be formed. If there is a gap 20, rainwater or the like may enter the house through the gap 20 and cause rain leakage. Therefore, by attaching the band-shaped second waterproof sheet 8B so as to cover the gap 20, it is possible to prevent rainwater or the like from entering through the gap 20.

Here, as shown in FIG. 3, the second waterproof sheet 8B extends along the inclination direction α and intersects with the first waterproof sheet 8A. Then, at the intersection 81, the second waterproof sheet 8B is overlapped and attached on the first waterproof sheet 8A, and the second waterproof sheet 8B is raised by the overlap (see FIG. 3). Become.

In this state, although the second waterproof sheet 8B extends along the inclination direction α, the vertical relationship between the first waterproof sheet 8A and the second waterproof sheet 8B at the intersection 81 is Consider the case where it is reversed, that is, the first tarpaulin 8A overlaps the second tarpaulin 8B. In this case, at the intersection 81, the flow of water such as rainwater from the upstream side is blocked by the first waterproof sheet 8A, resulting in poor drainage (drainage). As a result, water collects there. The puddle may, for example, cause mold to grow, or cause water to scatter and wet the surrounding area when the puddle is stepped on.

Therefore, in the waterproof structure 10, as described above, the second waterproof sheet 8B extends along the inclination direction α, and at the intersection 81 with the first waterproof sheet 8A, above the first waterproof sheet 8A. It overlaps with. As a result, rainwater or the like from the upstream side is prevented from being blocked by the intersection 81 (first waterproof sheet 8A), and thus can smoothly flow down toward the downstream side. As described above, the waterproof structure 10 has excellent drainage, and the waterproof function is continuously and sufficiently exhibited.

Further, as described above, a gap 20 may be formed at the boundary between the heat insulating panels 1 adjacent to each other in the x-axis direction. The size (width in the left-right direction in FIG. 3) of the gap 20 may change due to a temperature change in the usage environment of the waterproof structure 10. In this case, the second waterproof sheet 8B is slightly deformed (extended in the left-right direction in FIG. 3) in accordance with the change in the size of the gap 20, but the influence is the effect of the second waterproof sheet 8B at the intersection 81. Can be prevented as much as possible. As a result, it is possible to prevent the second waterproof sheet 8B from peeling off at the intersections 81 where a large number (plurality) are intermittently present along the longitudinal direction of the second waterproof sheet 8B. As a result, the state in which the second waterproof sheet 8B is attached is maintained, and therefore, the deterioration of the waterproof function with time can be suppressed. As described above, when the size of the gap 20 changes, the first waterproof sheet 8A has a function of suppressing deformation of the second waterproof sheet 8B at the intersection 81 due to the change.

<Second Embodiment>
Next, a second embodiment of the waterproof structure of the present invention will be described.
FIG. 6 is a plan view showing a second embodiment of the waterproof structure of the present invention.

Hereinafter, the second embodiment of the waterproof structure of the present invention will be described with reference to this figure, but the differences from the above-described embodiments will be mainly described, and the same matters will be omitted.

The waterproof structure 10 shown in FIG. 6 is the same as the waterproof structure 10 shown in FIGS. 1 to 5 except that the structure of the heat insulating panel 1 and the structure of the waterproof sheet covering the heat insulating panel 1 are different.

That is, in the waterproof structure 10 of the second embodiment, the formation of the resin layer 5a and the resin layer 5b in the heat insulating panel 1 is omitted (not shown). Then, as shown in FIG. 6, the third waterproof sheet 8C that covers the heat insulating panel 1 via the refractory sheets 2A and 2B has a flat plate shape, and covers almost the entire surface of the heat insulating panel 1, that is, the heat insulating panel laying portion 30. It is covered with one sheet at once. In the waterproof structure 10 having such a configuration, the third waterproof sheet 8C also has the function as the resin layer 5a described in the first embodiment. That is, it also functions as a waterproof layer that exhibits rust prevention and waterproofness to the metal layer 4a.

The waterproof structure 10 of the second embodiment also has the same effect as that of the first embodiment.

Although the waterproof structure of the present invention has been described above with respect to the illustrated embodiment, the present invention is not limited to this, and each part constituting the waterproof structure has an arbitrary configuration capable of exhibiting the same function. Can be replaced with. Further, any component may be added.

Further, the construction site of the waterproof structure is not limited to the roof provided in the house in each of the above-described embodiments, but may be the rooftop or the floor of the veranda provided in the house.

10 Waterproof structure 1 Insulation panel 11 Edge (1st edge)
12 edge (second edge)
13 Edge (3rd edge)
14 Edge (4th edge)
2A 1st tarpaulin 2B 2nd tarpaulin 2C 2nd tarpaulin 3 Resin layer 4a Metal layer 4b Metal layer 5a Resin layer 5b Resin layer 6 Convex 7 Concave 8A 1st tarpaulin 8B 2nd tarpaulin 8C 3rd tarpaulin 81 Intersection 9 Fixing screw 91 Main building 15 Through hole 20 Gap 30 Insulation panel laying part 100 Roof t _2A , t _2B Thickness W _2A , W _2B Width W _2C Diameter α Tilt direction θ ₁ Tilt angle

Claims (8)

A plurality of heat insulating panels having heat insulating properties, forming a rectangular flat plate in a plan view, and having a plurality of through holes penetrating in the thickness direction thereof are provided, and the plurality of heat insulating panels are provided in the long side direction and short length. Insulation panel laying parts laid side by side in the side direction,
A fixing screw that is inserted through the through hole and fixes the heat insulating panel laying portion to the house,
A first fireproof sheet having fire resistance and covering the boundary between the heat insulating panels adjacent to each other in the short side direction among the heat insulating panel laying parts.
A second fireproof sheet having fire resistance and covering the boundary between the heat insulating panels adjacent to each other in the long side direction among the heat insulating panel laying parts.
A third fireproof sheet that has fire resistance and covers the head of the fixing screw that is inserted and fixed through the through hole formed in the central portion of the heat insulating panel.
The boundary portion between the heat insulating panels adjacent to each other in the short side direction via the first fireproof sheet and the boundary portion between the heat insulating panels adjacent to each other in the long side direction via the second fireproof sheet. A waterproof structure characterized by having a waterproof sheet to cover. The waterproof structure according to claim 1, wherein the first refractory sheet has a strip shape and covers a boundary portion between the heat insulating panels adjacent to each other in the short side direction along the long side direction. The heat insulating panel includes the through hole formed near the boundary between the heat insulating panels adjacent to each other in the short side direction.
The first fireproof sheet is inserted and fixed through the boundary portion between the heat insulating panels adjacent to each other in the short side direction and the through hole formed near the boundary portion between the heat insulating panels adjacent to each other in the short side direction. The waterproof structure according to claim 2, which collectively covers the head of the fixing screw. The waterproof sheet has a band-shaped first waterproof sheet, and claims to cover the boundary between the heat insulating panels adjacent to each other in the short side direction along the long side direction via the first fireproof sheet. Item 2. The waterproof structure according to item 2 or 3. The waterproof structure according to any one of claims 1 to 4, wherein the second refractory sheet has a strip shape and covers a boundary portion between the heat insulating panels adjacent to each other in the long side direction along the short side direction. .. The waterproof sheet has a band-shaped second waterproof sheet, and claims to cover the boundary between the heat insulating panels adjacent to each other in the long side direction along the short side direction via the second fireproof sheet. Item 5. The waterproof structure according to item 5. In the heat insulating panels adjacent to each other in the short side direction, a recess is formed at the edge of one of the heat insulating panels, and a convex portion is formed at the edge of the other heat insulating panel. Engaged and
The waterproof structure according to any one of claims 1 to 6, wherein the heat insulating panels adjacent to each other in the long side direction face each other with the edges of both heat insulating panels forming flat flat portions. The waterproof structure according to any one of claims 1 to 7, wherein the width of the first refractory sheet and the width of the second refractory sheet are the same.

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