JP7056839B2 - Waterproof structure - Google Patents

Description

The present invention relates to a waterproof structure.

Conventionally, a waterproof structure may be provided on the inside corner having a horizontal surface and a vertical surface on the roof. As a waterproof structure, a waterproof sheet, a sheet holding plate for fixing the waterproof sheet, and a cover sheet are known (see, for example, Patent Document 1). In the waterproof structure described in Patent Document 1, both the waterproof sheet and the cover sheet are one continuous sheet from the horizontal plane to the vertical plane. In this case, each sheet expands and contracts due to a change in the temperature of the environment, but since there is no play (buffer) to absorb the expansion and contraction or there is little play, stress may be concentrated and the sheet may be torn. The torn sheet does not maintain its waterproof function.

Japanese Patent No. 3513069

An object of the present invention is to provide a waterproof structure capable of reliably ensuring waterproofness to a skeleton.

Such an object is achieved by the present invention of the following (1) to ( 5 ).
(1) A waterproof structure for waterproofing a skeleton having a horizontal plane and a vertical plane formed vertically upward with respect to the horizontal plane.
At least two first joining members arranged along a boundary portion between the horizontal plane and the vertical plane and having a first horizontal blade portion facing the horizontal plane side and a first vertical blade portion facing the vertical plane side. ,
A first waterproof sheet laid on the horizontal plane and superposed and joined on the first horizontal blade portion of each of the first joining members.
A second waterproof sheet laid on the vertical surface and superposed and joined on the first vertical blade portion of each first joining member.
A second horizontal blade portion that is installed so as to straddle between adjacent first joint members and faces the first horizontal blade portion side of each of the first joint members and a second horizontal blade portion that faces the first vertical blade portion. Provided with a second joining member having a vertical vane portion
In the second joining member, the second horizontal blade portion is joined to the first horizontal blade portion, and the second vertical blade portion is joined to the first vertical blade portion.
In the second joining member, the second horizontal blade portion is overlapped on the first waterproof sheet, and the second vertical blade portion is overlapped on the second waterproof sheet.
Each of the first joining members has a metal core portion and a resin coating layer covering the core portion.
A waterproof structure characterized in that the coating layer, the first waterproof sheet, the second waterproof sheet, and the second joining member are each made of a vinyl chloride resin .

( 2 ) The waterproof structure according to any one of (1) above , wherein a gap is formed between adjacent first joining members.

( 3 ) The waterproof structure according to (1) or (2) above , wherein each of the first joining members has at least one of the first horizontal blade portion and the first vertical blade portion partially exposed.

( 4 ) The first joining member has a long shape along the boundary between the horizontal plane and the vertical plane, and the cross-sectional shape thereof has an "L" shape in the above (1) to (3). Waterproof structure described in any of.

( 5 ) The waterproof structure according to ( 4 ) above, wherein the second joining member has a shorter overall length than the first joining member, and its cross-sectional shape has an "L" shape.

According to the present invention, waterproofness to the skeleton can be reliably ensured.

FIG. 1 is a vertical sectional perspective view showing a first embodiment of the waterproof structure of the present invention. FIG. 2 is a view (plan view) seen from the direction of arrow A in FIG. FIG. 3 is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a cross-sectional view taken along the line CC in FIG. FIG. 5 is a vertical cross-sectional view of the first joining member included in the waterproof structure shown in FIG. FIG. 6 is a vertical sectional view showing a second embodiment of the waterproof structure of the present invention. FIG. 7 is a vertical sectional view showing a third embodiment of the waterproof structure of the present invention.

Hereinafter, the waterproof structure of the present invention will be described in detail based on the preferred embodiments shown in the accompanying drawings.
<First Embodiment>
FIG. 1 is a vertical sectional perspective view showing a first embodiment of the waterproof structure of the present invention. FIG. 2 is a view (plan view) seen from the direction of arrow A in FIG. FIG. 3 is a cross-sectional view taken along the line BB in FIG. FIG. 4 is a cross-sectional view taken along the line CC in FIG. FIG. 5 is a vertical cross-sectional view of the first joining member included in the waterproof structure shown in FIG. In the following, for convenience of explanation, as shown in FIG. 1, the three directions orthogonal to each other are defined as the x direction, the y direction, and the z direction. The xy plane is parallel to the horizontal direction, and the z direction is parallel to the vertical direction. Further, in FIGS. 1 and 3 to 5 (the same applies to FIGS. 6 and 7), the upper side, that is, the positive side in the z direction is "upper" or "upper", and the lower side, that is, the negative side in the z direction is ". Sometimes referred to as "down" or "down".

As shown in FIG. 1, the waterproof structure 1 is for waterproofing the skeleton 100.
The skeleton 100 is not particularly limited, and examples thereof include a rooftop and a veranda. Further, the skeleton 100 has an inner corner 103 composed of a horizontal plane 101 and a vertical plane 102 formed vertically above the horizontal plane 101, that is, toward the positive side in the z direction. The waterproof structure 1 is applied to the inside corner 103.

The horizontal plane 101 is, for example, a floor surface. The horizontal plane 101 may have a slight gradient with respect to the xy plane (horizontal direction), that is, it may be inclined. As a result, the horizontal plane 101 becomes a surface with good drainage.
The vertical surface 102 is, for example, a wall surface.

As shown in FIG. 1, the waterproof structure 1 includes a first joining member 2A and a first joining member 2B arranged along a boundary portion 104 between a horizontal plane 101 and a vertical plane 102, that is, along the y direction. The first waterproof sheet 3A laid on the horizontal plane 101, the second waterproof sheet 3B laid on the vertical surface 102, and the adjacent first joining member 2A and the first joining member 2B are installed so as to straddle each other. The second joining member 4 is provided. Hereinafter, the configuration of each part will be described.

Since the first joining member 2A and the first joining member 2B have the same configuration except that the arrangement location is different, the first joining member 2A will be described below as a representative. The waterproof structure 1 includes two first joining members, the first joining member 2A and the first joining member 2B, in the configuration shown in FIG. 1, but the waterproof structure 1 is not limited to this, and is not limited to, for example, 3. It may be provided with one or more first joining members.

As shown in FIGS. 1 and 3, the first joining member 2A has a first horizontal blade portion 21 facing the horizontal plane 101 side and a first vertical blade portion 22 facing the vertical plane 102 side. The first horizontal blade portion 21 projects toward the positive side in the x direction and forms a band shape along the y direction. The first vertical blade portion 22 projects toward the positive side in the z direction and forms a band shape along the y direction.

In other words, the first joining member 2A has a long shape along the boundary portion 104 (y direction) between the horizontal plane 101 and the vertical plane 102, and its cross-sectional shape has an "L" shape. It has become.

In the first joining member 2A, the back surface (back surface) 211 of the first horizontal blade portion 21 is fixed to the horizontal plane 101, and the back surface (back surface) 221 of the first vertical blade portion 22 is the vertical surface 102. Is fixed to.

In the skeleton 100, stress is concentrated on the boundary portion 104, and cracks and the like are likely to occur. When a crack occurs, rainwater or the like may infiltrate from there, but the crack can be covered and closed by the first joining member 2A, and thus the infiltration of rainwater or the like can be prevented.

The total length L _2A of the first joining member 2A is not particularly limited, and is preferably 0.3 m or more and 5 m or less, and more preferably 0.5 m or more and 2.5 m or less. The total length L _2B of the first joining member 2B may be the same as or different from the total length L _2A of the first joining member 2A.

Further, the method of fixing the first joining member 2A to the skeleton 100 is not particularly limited, and for example, a method of fixing using screws, screws, or the like can be used.

As shown in FIG. 5, the first joining member 2A is composed of a laminated body having a metal core portion 23 and a resin coating layer 24 covering the front and back surfaces of the core portion 23.

The core portion 23 has substantially the same outer shape as the outer shape of the first joining member 2A. The core portion 23 is made of stainless steel, a steel material such as iron, aluminum, copper, or the like, but is preferably made of a steel material. As a result, the first joining member 2A has excellent strength, and even if a crack occurs at the boundary portion 104 between the horizontal plane 101 and the vertical plane 102, the state of covering the crack can be maintained. This makes it possible to prevent rainwater or the like from infiltrating through cracks.

Examples of the resin constituting the coating layer 24 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, but polyvinyl chloride is preferable. Thereby, for example, the adhesion between the covering layer 24 and the first waterproof sheet 3A or the second waterproof sheet 3B can be improved.

As shown in FIGS. 1 and 2, the first joining member 2A and the first joining member 2B are adjacent to each other along the y direction. A gap 10 is formed between them. The first joining member 2A and the first joining member 2B each expand and contract mainly in the y direction due to a temperature change in the environment. The gap 10 functions as a buffering portion that offsets this expansion and contraction. Thereby, for example, even if the first joining member 2A and the first joining member 2B are each extended and are likely to interfere with each other, the interference can be prevented.

The distance (gap length) L ₁₀ along the y direction of the gap 10 is not particularly limited, and is preferably 1 mm or more and 20 mm or less, and more preferably 2 mm or more and 6 mm or less.

As shown in FIGS. 3 and 4, the first waterproof sheet 3A has a surface (front surface) 212 of the first horizontal blade portion 21 of the first joining member 2A and a first horizontal blade portion of the first joining member 2B. It is overlapped and joined on the surface 212 of 21. This makes it possible to prevent rainwater or the like from entering between the first waterproof sheet 3A and the first joining member 2A, or between the first waterproof sheet 3A and the first joining member 2B.

On the other hand, the second waterproof sheet 3B is overlapped on the surface (front surface) 222 of the first vertical blade portion 22 of the first joining member 2A and the surface 222 of the first vertical blade portion 22 of the first joining member 2B. Are joined together. As a result, it is possible to prevent rainwater or the like from entering between the second waterproof sheet 3B and the first joining member 2A, or between the second waterproof sheet 3B and the first joining member 2B.
As for each joining method, the above-mentioned joining method can be used.

Further, the first waterproof sheet 3A does not reach any of the first vertical blade portions 22, that is, it is separated from both first vertical blade portions 22. The second waterproof sheet 3B also does not reach any of the first horizontal blade portions 21, that is, is separated from both first horizontal blade portions 21. As a result, in the first joining member 2A and the first joining member 2B, the first horizontal blade portion 21 is partially exposed (see the cross-hatched portion (exposed portion 213) in FIG. 1). The first vertical blade portion 22 is also partially exposed (see the cross-hatched portion (exposed portion 223) in FIG. 1).

As described above, the first joining member 2A and the first joining member 2B each have a covering layer 24. The coating layer 24 is preferably made of polyvinyl chloride. As a result, the covering layer 24 has excellent environmental resistance, that is, is resistant to wind and rain and also to ultraviolet rays, and may have an exposed portion 213 and an exposed portion 223.

In the first joining member 2A and the first joining member 2B, the first horizontal blade portion 21 is partially exposed and the first vertical blade portion 22 is also partially exposed, but the present invention is limited to this. However, for example, only one of the first horizontal blade portion 21 and the first vertical blade portion 22 may be partially exposed.

It is preferable that the first waterproof sheet 3A, the second waterproof sheet 3B, and the second joining member 4 are each made of the same vinyl chloride resin as the above-mentioned coating layer 24. As a result, it is possible to increase the joint strength of the jointed parts of the materials to be joined, thereby preventing the jointed parts from peeling off, and the waterproof structure 1 can be used stably for a long period of time.

Further, it is preferable that the first waterproof sheet 3A, the second waterproof sheet 3B, the second joining member 4, and the covering layer 24 have the same elastic modulus.

As shown in FIGS. 1, 3, and 4, the second joining member 4 is installed between the first joining member 2A and the first joining member 2B, that is, across the gap 10. As shown in FIGS. 3 and 4, the second joining member 4 includes a second horizontal blade portion 41 facing the first horizontal blade portion 21 side of the first joining member 2A and the first joining member 2B, and a first vertical blade. It has a second vertical blade portion 42 facing the portion 22. The second horizontal blade portion 41 projects toward the positive side in the x direction and forms a small piece along the y direction. The second vertical blade portion 42 projects toward the positive side in the z direction and forms a small piece along the y direction.

In other words, the second joining member 4 has an "L" -shaped cross-sectional shape cut along the xz plane.

Further, the total length L4 of the second joining member ₄ is shorter than the total length L2A of the first joining member _2A and the total length L2B of the first joining member _2B . The total length L ₄ is not particularly limited, but is defined by each joining length (length along the y direction) with the first joining member 2A and the first joining member 2B. The joint length is preferably 30 mm or more and 100 mm or less, and more preferably 40 mm or more and 50 mm or less from the viewpoint of cost and workability.

A part of the boundary portion 104 between the horizontal plane 101 and the vertical plane 102 is exposed through the gap 10, but the second joining member 4 covers the boundary portion 104 together with the gap 10. This makes it possible to prevent rainwater or the like from entering the boundary portion 104.

As shown in FIGS. 3 and 4, in the second joint member 4, the second vertical blade portion 42 side (negative side in the x direction) of the back surface (back side surface) 411 of the second horizontal blade portion 41 is the first joint. It is joined to the first horizontal blade portion 21 of the member 2A and the first horizontal blade portion 21 of the first joining member 2B. Further, the second horizontal blade portion 41 side (negative side in the z direction) of the back surface (back side surface) 421 of the second vertical blade portion 42 is the first vertical blade portion 22 of the first joining member 2A and the first joining member. It is joined to the first vertical blade portion 22 of 2B. As a result, it is possible to prevent rainwater or the like from entering between the first joining member 2A and the second joining member 4 or between the first joining member 2B and the second joining member 4.
As for each joining method, the above-mentioned joining method can be used.

As described above, the waterproof structure 1 can surely secure (maintain) waterproofness to the skeleton 100, that is, can exhibit excellent waterproofness to the skeleton 100.

As shown in FIGS. 3 and 4, in the second joining member 4, the second horizontal blade portion 41 is overlapped on the first waterproof sheet 3A. The back surface 411 of the second horizontal blade portion 41 is joined to the first waterproof sheet 3A at a portion other than the joint portion with each of the first horizontal blade portions 21.

Further, in the second joining member 4, the second vertical blade portion 42 is overlapped on the second waterproof sheet 3B. The back surface 421 of the second vertical blade portion 42 is joined to the second waterproof sheet 3B at a portion other than the joint portion with each of the first vertical blade portions 22.

By such joining, the joining area of the second joining member 4 is increased, and the joining strength of the second joining member 4 is increased. As a result, even if the second joining member 4 is smaller than the first joining member 2A or the first joining member 2B, it is prevented from being easily peeled off, and thus exhibits a long-term waterproof function. be able to.
As for each joining method, the above-mentioned joining method can be used.

Further, the second joining member 4 may be made of a flexible sheet, and the sheet may be bent into an "L" shape for use, or the shape may be maintained in the "L" shape in advance. It may be hard and hard.

Further, the thickness t _3A of the first waterproof sheet 3A, the thickness t _3B of the second waterproof sheet 3B, the thickness t _2A of the first joining member 2A, and the thickness t _2B of the first joining member 2B. The magnitude relationship with the thickness t ₄ of the second joining member 4 is not particularly limited, but for example, among these, the thickness t _2A and t _2B are preferably 0.6 mm or more and 2 mm or less, and the thickness t _3A . The thickness t _3B is preferably 1.0 mm or more and 2.5 mm or less. Further, since the second joint member ₄ is a part of the waterproof structure forming the surface layer like the first waterproof sheet 3A and the second waterproof sheet 3B, it is preferable that the performance is equal to or higher than that of the first waterproof sheet 3A and the second waterproof sheet 3B. It is preferably the same as or thicker than the t _3A and the thickness t _3B (for example, within 1 mm).

<Second Embodiment>
FIG. 6 is a vertical sectional 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 present embodiment is the same as the first embodiment except that the positional relationship between the first waterproof sheet and the second joint member and the positional relationship between the second waterproof sheet and the second joint member are different.

As shown in FIG. 6, in the present embodiment, in the second joining member 4, the second horizontal blade portion 41 is interposed between the first waterproof sheet 3A and the first horizontal blade portion 21 of the first joining member 2A. It is inserted. Similarly, the second horizontal blade portion 41 is also interposed between the first waterproof sheet 3A and the first horizontal blade portion 21 of the first joining member 2B. Then, the surface (front surface) 412 of the second horizontal blade portion 41 is joined to the first waterproof sheet 3A.

Further, in the second joining member 4, the second vertical blade portion 42 is interposed between the second waterproof sheet 3B and the first vertical blade portion 22 of the first joining member 2A. Similarly, the second vertical blade portion 42 is also interposed between the second waterproof sheet 3B and the first vertical blade portion 22 of the first joining member 2B. The surface (front surface) 422 of the second vertical blade portion 42 is joined to the second waterproof sheet 3B.

By such joining, the second joining member 4 is in a state of being pressed from above by the first waterproof sheet 3A and the second waterproof sheet 3B. As a result, the second joining member 4 is prevented from being easily peeled off, and thus can exhibit a waterproof function for a long period of time.

<Third Embodiment>
FIG. 7 is a vertical sectional view showing a third embodiment of the waterproof structure of the present invention.

Hereinafter, the third 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 present embodiment is the same as the first embodiment except that the positional relationship between the second waterproof sheet and the second joint member is different.

As shown in FIG. 7, in the present embodiment, in the second joint member 4, the second vertical blade portion 42 is interposed between the second waterproof sheet 3B and the first vertical blade portion 22 of the first joint member 2A. It has been inserted. Similarly, the second vertical blade portion 42 is also interposed between the second waterproof sheet 3B and the first vertical blade portion 22 of the first joining member 2B. The surface 422 of the second vertical blade portion 42 is joined to the second waterproof sheet 3B. Even with such joining, the second joining member 4 can exhibit a waterproof function for a long period of time.

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 waterproof structure of the present invention may be a combination of any two or more configurations (features) in each of the above embodiments.

1 Waterproof structure 2A 1st joint member 2B 1st joint member 21 1st horizontal blade 211 Back surface (back surface)
212 Surface (front surface)
213 Exposed part 22 First vertical blade part 221 Back side (back side)
222 surface (front surface)
223 Exposed part 23 Core part 24 Coating layer 3A 1st waterproof sheet 3B 2nd waterproof sheet 4 2nd joining member 41 2nd horizontal blade part 411 Back side (back side)
412 Surface (front surface)
42 2nd vertical blade 421 Back side (back side)
422 surface (front surface)
10 gap 100 skeleton 101 horizontal plane 102 vertical plane 103 inside corner 104 boundary part t _2A thickness t _2B thickness t _3A thickness t _3B thickness t ₄ thickness L _2A total length L _2B total length L ₄ total length L ₁₀ distance (gap length) )

Claims (5)

It is a waterproof structure that waterproofs a skeleton having a horizontal plane and a vertical plane formed vertically upward with respect to the horizontal plane.
At least two first joining members arranged along a boundary portion between the horizontal plane and the vertical plane and having a first horizontal blade portion facing the horizontal plane side and a first vertical blade portion facing the vertical plane side. ,
A first waterproof sheet laid on the horizontal plane and superposed and joined on the first horizontal blade portion of each of the first joining members.
A second waterproof sheet laid on the vertical surface and superposed and joined on the first vertical blade portion of each first joining member.
A second horizontal blade portion that is installed so as to straddle between adjacent first joint members and faces the first horizontal blade portion side of each of the first joint members and a second horizontal blade portion that faces the first vertical blade portion. Provided with a second joining member having a vertical vane portion
In the second joining member, the second horizontal blade portion is joined to the first horizontal blade portion, and the second vertical blade portion is joined to the first vertical blade portion.
In the second joining member, the second horizontal blade portion is overlapped on the first waterproof sheet, and the second vertical blade portion is overlapped on the second waterproof sheet.
Each of the first joining members has a metal core portion and a resin coating layer covering the core portion.
A waterproof structure characterized in that the coating layer, the first waterproof sheet, the second waterproof sheet, and the second joining member are each made of a vinyl chloride resin . The waterproof structure according to claim 1 , wherein a gap is formed between the adjacent first joining members. The waterproof structure according to claim 1 or 2 , wherein each of the first joining members has at least one of the first horizontal blade portion and the first vertical blade portion partially exposed. The first joining member has an elongated shape along the boundary between the horizontal plane and the vertical plane, and its cross-sectional shape has an "L" shape according to any one of claims 1 to 3 . Described waterproof structure. The waterproof structure according to claim 4 , wherein the second joining member has a shorter overall length than the first joining member, and its cross-sectional shape has an "L" shape.

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