JP6921736B2 - Water blocking structure of the building - Google Patents

Description

The present invention relates to a waterproof structure of a building.

In the building of Patent Document 1, a draining member for preventing rainwater from entering is provided on the lower side of the outer wall panel.

Japanese Unexamined Patent Publication No. 2014-114670

There is a building where the sash is placed (inset) indoors with respect to the outer wall material. In this building, if the vertical joint material between the outer wall material and the sash has a damaged portion, water may infiltrate from the damaged portion to the indoor side of the vertical joint material.

The water that has entered the vertical joint portion can be drained by forming a drainage port on the lower side of the vertical joint portion. Here, when a drainage port having a large opening width is formed, drainage becomes easy, but at the time of a typhoon, the pressure of rain and wind acting inward from the drainage port becomes high, and water easily blows up. In other words, in a building where the sash is placed indoors with respect to the outer wall material, there is room for improvement in order to enable drainage of water that has entered the vertical joints and suppress water from rising to the vertical joints. There is.

An object of the present invention is to enable drainage of water that has infiltrated into a vertical joint portion in a building in which a sash is arranged indoors with respect to the outer wall material, and to suppress water from blowing up to the vertical joint portion. do.

The water-stopping structure of the building according to the first aspect includes an outer wall material provided on the outdoor side with respect to the constituent members constituting a part of the building, and the outer wall material adjacent to the outer wall material in the lateral direction of the building. A space portion extending in the height direction of the building between the siding provided on the constituent member and the outer wall material and the siding on the indoor side of the outer outer surface and through which water flows between the siding and the constituent member. It has a vertical joint material to be formed and a means for suppressing water from blowing up in the space.

In the waterproof structure of the building according to the first aspect, water flows through the space between the vertical joint material and the constituent members between the outer wall material and the sash, so that the water that has entered the vertical joint portion is drained. Can be done. On the other hand, when rain and wind infiltrate the space from the outside and the water in the space is pressurized and the water tries to blow up, the suppressing means suppresses the water from blowing up in the space. .. As a result, in a building in which the sash is arranged indoors with respect to the outer wall material, it is possible to drain the water that has entered the vertical joint portion and suppress the water from blowing up to the vertical joint portion.

The restraining means of the water blocking structure of the building according to the second aspect has a regulating member arranged in a part of the space and restricting the rise of water.

In the water blocking structure of the building according to the second aspect, since the regulating member is arranged in a part of the space and the other part of the space is open, the water in the space can be drained. Further, in a part of the space portion, since the regulating member regulates the rise of water, it is possible to suppress the rise of water. By providing the regulating member in this way, it is possible to achieve both drainage and suppression of water blow-up.

A plurality of the regulating members of the water blocking structure of the building according to the third aspect are arranged at intervals in the height direction.

In the water blocking structure of the building according to the third aspect, since a plurality of regulating members are provided in the height direction, even if the bottom regulating member cannot completely suppress the water blow-up, The second and subsequent regulatory members can prevent water from rising. Further, since the space between the regulating member and the regulating member functions as a pressure release portion, the water blowing pressure is reduced, and the water blowing can be further suppressed.

The height in the height direction is higher than the height of the restricting member between the constituent member and the restricting member of the water-stopping structure of the building according to the fourth aspect, and water to the indoor side of the constituent member. A water stop member is provided to regulate the movement of the water.

In the water blocking structure of the building according to the fourth aspect, when a part of the water that cannot be regulated by the regulating member blows up, the water blocking member regulates the movement of water to the indoor side with respect to the constituent members. As a result, it is possible to prevent water from entering the indoor side of the constituent member.

The waterproof structure of the building according to the fifth aspect is provided with a compression member that is compressed by being sandwiched between the constituent member and the outer wall material.

In the water blocking structure of the building according to the fifth aspect, since the gap between the outer wall material and the constituent member is closed by the compression member, it is possible to suppress the intrusion of water into the gap between the outer wall material and the constituent member.

The restraining means of the water blocking structure of the building according to the sixth aspect has an auxiliary space portion formed between the constituent member and the sash and communicated with the space portion.

In the water-stop structure of the building according to the sixth aspect, it is possible to prevent the water from overflowing in the space portion by infiltrating a part of the water that has entered the space portion into the auxiliary space portion. Furthermore, since the space portion and the auxiliary space portion are connected, the volume of the space portion pressurized by the blow-up is larger than the volume of the space portion alone, so that the water to be blown up in the space portion The pressing force is depressurized, and it is possible to suppress the blow-up of water.

The constituent member of the water-stopping structure of the building according to the seventh aspect is provided with a drainage member that forms a flow path for draining water in the auxiliary space portion together with the constituent member.

In the water blocking structure of the building according to the seventh aspect, when the amount of water flowing into the auxiliary space increases, excess water is drained through the flow path between the constituent members and the drainage member. As a result, it is possible to prevent water from overflowing from the auxiliary space portion.

A part of the flow path of the water-stopping structure of the building according to the eighth aspect is provided with a porous member that suppresses water from blowing up into the auxiliary space and is made breathable.

In the water-stop structure of the building according to the eighth aspect, since a part of the air in the auxiliary space is discharged to the outside through the porous member, the pressure increase in the auxiliary space is suppressed. Further, the porous member suppresses the infiltration of water from the outside into the auxiliary space. By these actions, the pressing force of the water blowing up toward the space is reduced, so that the intrusion of water into the auxiliary space and the space can be suppressed.

As described above, in the water blocking structure of the building according to the present invention, in a building in which the siding is arranged indoors with respect to the outer wall material, the water that has entered the vertical joint portion can be drained, and the vertical joint portion can be drained. It is possible to suppress the rising of water to the joint.

It is a schematic block diagram of the sash of the building which concerns on this embodiment, and the sash peripheral part. It is a block diagram when the water-stopping structure which concerns on this Embodiment is seen from the lateral direction. It is a block diagram when the water stop structure which concerns on this embodiment is seen from above. It is explanatory drawing of the water stop sheet which concerns on this embodiment. It is explanatory drawing which shows the state which attached the water stop sheet to the constituent member which concerns on this embodiment. It is explanatory drawing which shows the state which attached the sash to the constituent member which concerns on this embodiment. It is explanatory drawing which shows the state before the sash is attached to the constituent member which concerns on this embodiment, and the outer wall material on one side is attached. It is explanatory drawing which shows the state before the sash is attached to the constituent member which concerns on this embodiment, and the outer wall material on the other side is attached. It is explanatory drawing which shows the state which water blows up in the water stop structure which concerns on this embodiment.

An example of the waterproof structure of the building according to the present embodiment will be described.

〔overall structure〕
FIG. 1 shows a schematic configuration of a part of a building 10 to which the water blocking structure 30 is applied as an example of the water blocking structure of the building. The building 10 shown in FIG. 2 has, as an example, a pillar 11A (see FIG. 3), a floor beam (not shown), a component member 12, a drainage member 26 as an example of a drainage member, and a sponge rubber as an example of a porous member. 28 and a waterproof structure 30 are included. In the following description, the lateral direction (girder direction or end direction) of the building 10 will be referred to as the X direction, the height direction (vertical direction) will be referred to as the Y direction, and the inner / outer direction will be referred to as the Z direction. The X, Y and Z directions are orthogonal to each other.

<Components>
As an example, the component 12 shown in FIG. 2 includes a support frame 14 extending in the X direction on the outdoor side (balcony 13 side) of the building 10, a sash frame 16, and an outer wall frame 22 (see FIG. 3). It is configured to include and, and constitutes a part of the building 10. The sash frame 16 and the outer wall frame 22 are provided diagonally above (indoor side) with respect to the support frame 14. In FIG. 2, the pillar 11A (see FIG. 3) and the vertical frame 18 (see FIG. 3) described later are not shown.

(Support frame)
The support frame 14 is attached to the floor beam of the building 10 via a bracket (not shown). Further, as an example, the support frame 14 has a vertical wall portion 14A along the Y direction, a lower wall portion 14B extending from the lower end of the vertical wall portion 14A to the indoor side in the Z direction, and a vertical wall portion 14A from the upper end to the Z direction. It is configured as a channel material having an upper wall portion 14C extending to the indoor side of the above. The central portion of the vertical wall portion 14A in the Y direction and the side surface of the lower portion on the outdoor side are covered from the outdoor side by a waterproof sheet 15 extending from the upper surface of the floor portion of the balcony 13. Further, the side surface of the vertical wall portion 14A on the outdoor side of the upper portion in the Y direction and the upper surface of the upper wall portion 14C are covered from the outdoor side and above by the sheet material 46 described later. The upper end of the waterproof sheet 15 and the lower end of the sheet material 46 are in contact with each other.

(Frame for sash)
As an example, the sash frame 16 shown in FIG. 5 is a substantially rectangular frame in which a horizontal frame 17 elongated in the X direction and a vertical frame 18 elongated in the Y direction when viewed from the Z direction. It is said that the structure is formed in a shape.

As an example, the horizontal frame 17 shown in FIG. 2 has a stepped cross-sectional shape having a vertical wall portion 17A, a lower wall portion 17B, a vertical wall portion 17C, and an upper wall portion 17D when viewed from the X direction. .. The vertical wall portion 17A stands upright in the Y direction at the indoor side end of the upper wall portion 14C of the support frame 14. The lower wall portion 17B extends in the Z direction from the upper end of the standing wall portion 17A toward the indoor side. The vertical wall portion 17C stands upright in the Y direction at the indoor side end portion of the lower wall portion 17B. The upper wall portion 17D extends in the Z direction from the upper end of the standing wall portion 17C toward the indoor side. Here, the horizontal frame 17 supports the sash 36 from the lower side and the indoor side by attaching the sash 36, which will be described later, with screws or the like (not shown).

As an example, the vertical frame 18 shown in FIG. 3 has a side wall portion 18A in which a part of the sash 36, which will be described later, is attached in the X direction using screws 19, and another part of the sash 36 in the Z direction using screws 21. It has a front wall portion 18B attached to the.

(Frame for outer wall)
The outer wall frame 22 shown in FIG. 5 is a member elongated in the X direction. Further, the outer wall frame 22 is arranged side by side with the horizontal frame 17 in the X direction. Specifically, the outer wall frame 22 has a mounting portion 23 on which the outer wall material 32 (see FIG. 2) described later is placed, and a standing wall portion 24 that supports the outer wall material 32 from the indoor side.

The mounting portion 23 shown in FIG. 2 is covered with a sheet material 46, which will be described later, in a state before the outer wall material 32 is mounted. Further, in the mounting portion 23, the upper surface 23A is formed at a position one step higher than the upper surface of the upper wall portion 14C. The upper surface 23A is a flat surface extending in the X direction and the Z direction. A washer 25 (see FIG. 6) into which a shaft portion of a bolt (not shown) for fixing the outer wall material 32 is inserted is fixed to a part of the upper surface 23A. The X-direction end of the mounting portion 23 (the end on the side close to the sash 36) extends to the X-direction end of the horizontal frame 17 (the end on the side close to the outer wall material 32).

The vertical wall portion 24 shown in FIG. 5 stands upright in the Y direction and extends in the X direction at the indoor side end portion of the mounting portion 23. The vertical wall portion 24 is formed with a through hole 24A through which a shaft portion of a bolt (not shown) for attaching the outer wall material 32 (see FIG. 2) is inserted. Here, the outer wall frame 22 is adapted to support the outer wall material 32 from the lower side and the indoor side by attaching the outer wall material 32, which will be described later, with bolts or the like (not shown).

<Draining material>
As an example, the drainage member 26 shown in FIG. 2 is a member for drainage that is elongated in the X direction along the support frame 14, and is attached to the support frame 14. Specifically, the drainage material 26 has a substantially inverted L-shape in cross section when viewed from the X direction, and the upper wall 26A along the Z direction and the outdoor side end of the upper wall 26A in the Z direction. It has a vertical wall 26B extending downward in the Y direction from the portion. A part of the upper wall 26A in the X direction is attached to the support frame 14, but the other part of the upper wall 26A in the X direction is arranged at a distance from the support frame 14. The vertical wall 26B is arranged at a distance from the vertical wall portion 14A of the support frame 14 in the Z direction. In this way, the drainage member 26, together with the support frame 14, forms a flow path 27 for draining the water W.

<Sponge rubber>
As an example, the sponge rubber 28 is formed in a rectangular parallelepiped shape long in the X direction. Further, a plurality of sponge rubbers 28 are provided in a part of the flow path 27 at intervals in the Y direction and the X direction. In other words, the sponge rubber 28 is provided so as to regulate a part of the water W flowing through the flow path 27 and allow the remaining water W to flow. Further, the sponge rubber 28 is a porous material and is breathable. Further, the sponge rubber 28 is configured to suppress the water W that blows up by coming into contact with the water W that blows up from the opening 29 around the lower end of the drainage material 26 toward the flow path 27. There is.

[Main part composition]
Next, the waterproof structure 30 will be described.

The water blocking structure 30 shown in FIG. 2 includes an outer wall material 32, a sash 36, a vertical joint material 38, a suppressing portion 42 as an example of a suppressing means for suppressing the blow-up of water W, and an example of a water blocking member. The sheet material 46 and the compression member 48 (see FIG. 3) are provided. As an example, the water blocking structure 30 has the same configuration on one side and the other side in the X direction with respect to the sash 36. Therefore, the configuration on one side will be described and the description on the other side will be omitted.

<Outer wall material>
As an example, the plurality of outer wall materials 32 shown in FIG. 1 are each made of lightweight aerated concrete (ALC) formed in a substantially rectangular plate shape having a thickness direction in the Z direction and a long length in the Y direction. A plurality of grooves 32A (not shown in FIGS. 2 and 9) are formed on the surface of the outer wall material 32 on the outdoor side. The surface of the outer wall material 32 on the outdoor side constitutes the design surface of the building 10.

Of the plurality of outer wall materials 32, the large one is referred to as a first outer wall material 33, and the small one is referred to as a second outer wall material 34. In FIG. 1, two first outer wall materials 33 and three second outer wall materials 34 are shown as an example. The two first outer wall members 33 are arranged at intervals in the X direction and extend in the Y direction. The three second outer wall materials 34 are arranged side by side in the X direction so as to connect the portions above the center of the two first outer wall materials 33 in the Y direction in the X direction. In other words, the plurality of outer wall materials 32 are arranged so as to have an inverted U shape as a whole when viewed from the Z direction. A sash 36, which will be described later, is arranged in a portion surrounded by the plurality of outer wall materials 32.

The first outer wall material 33 shown in FIG. 3 is provided on the outdoor side in the Z direction with respect to the outer wall frame 22. Further, the first outer wall material 33 includes an outer surface 33A extending in the X direction on the outdoor side in the Z direction, an inner surface 33B extending in the X direction on the indoor side, and an end portion of the outer surface 33A in the X direction when viewed from the Y direction. It has a side surface 33C that connects the inner surface 33B with the end in the X direction and extends in the Z direction. As an example, the outer surface 33A and the side surface 33C are waterproofed, but the inner surface 33B is not waterproofed.

<Sash>
The sash 36 shown in FIG. 1 is adjacent to the outer wall material 32 (first outer wall material 33) in the X direction, and is provided on the sash frame 16 (see FIG. 3) on the indoor side of the outer surface 33A of the outer wall material 32. .. Further, as an example, the sash 36 has a rectangular frame portion 52 having the X direction as the longitudinal direction and the Y direction as the lateral direction when viewed from the Z direction, and a window glass arranged inside the frame portion 52. It is configured to have 54 and.

The frame portions 52 are a pair of vertical frames 56 that are arranged at intervals in the X direction and extend in the Y direction, an upper frame 57 that connects the upper ends of the pair of vertical frames 56 in the X direction, and a lower end of the pair of vertical frames 56. It has a lower frame 58 that connects the portions in the X direction and supports the window glass 54. A lower frame drain 59 is attached to the lower frame 58 by an attachment means such as a snap fit (not shown).

The lower frame 58 shown in FIG. 2 is attached to the lower wall portion 17B and the upper wall portion 17D of the horizontal frame 17 by using screws (not shown). Further, a part of the lower frame 58 extends to the outdoor side in the Z direction from the standing wall portion 17A. A part of the lower frame 58 is arranged above the upper wall portion 14C of the support frame 14 at a distance from the upper wall portion 14C in the Y direction. Further, as described above, the lower frame drain 59 is attached to a part of the lower frame 58.

At the outer end of the vertical frame 56 shown in FIG. 3 in the X direction, a mounting portion 62 attached to the side wall portion 18A using screws 19 and a mounting portion 64 attached to the front wall portion 18B using screws 21 are formed. Has been done. When viewed from the Z direction, the mounting portion 62 is formed in a plate shape extending in the Z direction with the X direction as the thickness direction. The mounting portion 64 extends from the end portion of the mounting portion 62 on the outdoor side in the Z direction to the outside in the X direction (outer wall material 32 side). Further, the mounting portion 64 is arranged so as to overlap the portion of the outer wall material 32 on the indoor side of the center in the Z direction when viewed from the X direction.

In a state where the sash 36 is attached to the horizontal frame 17 (see FIG. 2) and the vertical frame 18 and the outer wall material 32 is attached to the outer wall frame 22, there is a Y direction between the attachment portion 64 and the outer wall material 32. A joint 66 is formed as a long vertical joint. A waterproof tape 65 that closes the gap between the front wall portion 18B and the mounting portion 64 is attached to the front wall portion 18B and the mounting portion 64.

<Vertical joint material>
As an example, the vertical joint material 38 shown in FIG. 2 has an amorphous sealing material 72 forming a primary waterproof line and a fixed sealing material 74 forming a secondary waterproof line on the indoor side of the amorphous sealing material 72. .. Further, the vertical joint material 38 extends in the Y direction and the Z direction of the building 10 between the outer wall material 32 and the sash 36. Further, the vertical joint material 38 forms a space 39 through which water W flows between the vertical joint material 38 and the constituent member 12.

(Amorphous sealing material)
The amorphous sealing material 72 is arranged at the joint 66 described above as the primary sealing material, and the joint 66 is stopped from water. Further, the amorphous sealing material 72 has a first vertical portion 72A extending linearly in the Y direction and a horizontal portion extending from the lower end portion of the first vertical portion 72A to the lower frame drain 59 on the outdoor side in the Z direction at the joint 66. It has a 72B and a second vertical portion 72C extending downward from the outdoor side end portion of the horizontal portion 72B. In other words, the amorphous sealing material 72 is formed in a substantially crank shape when viewed from the X direction. As the amorphous sealing material 72, for example, urethane, modified silicone, or the like is used.

The lower end of the second vertical portion 72C is arranged at substantially the same height as the lower surface of the outer wall material 32 and the lower surface of the lower frame drain 59. As a result, the space portion 39A forming a part (lower part) of the space portion 39 is formed on the lower side in the Y direction with respect to the first vertical portion 72A and the horizontal portion 72B and on the indoor side in the Z direction with respect to the second vertical portion 72C. ing. The space portion 39A is connected to the above-mentioned flow path 27. Further, an upper wall 26A of the drainage member 26 is arranged on the lower side of the second vertical portion 72C in the Y direction. A horizontal joint material 76 is provided between the second vertical portion 72C and the upper wall 26A.

As an example, the horizontal joint material 76 is made of the same material as the amorphous sealing material 72. Further, the horizontal joint material 76 is also provided at the joint portion between the lower frame drain 59 and the drain material 26 along the X direction.

(Standard sealing material)
The standard sealing material 74 is arranged as a secondary sealing material (gasket) at the joint 66 on the indoor side in the Z direction with respect to the irregular sealing material 72. Further, the standard sealing material 74 extends linearly in the Y direction and is in contact with the first vertical portion 72A of the irregular sealing material 72. Further, the standard sealing material 74 is fixed to the outer wall material 32 and the sash 36 by using a double-sided tape or an adhesive (not shown).

As an example, the standard sealing material 74 shown in FIG. 3 is made of an elastic material containing ethylene propylene diene rubber (EPDM). Further, the standard sealing material 74 is projected on both sides in the X direction at the plate-shaped base portion 74A whose thickness direction is the X direction and the indoor side end portion of the base portion 74A in the Z direction when viewed from the Y direction. It has an overhanging portion 74B and an overhanging portion 74C overhanging on both sides in the X direction at the outdoor side end portion of the base portion 74A in the Z direction.

The overhanging portion 74B and the overhanging portion 74C each extend in an oblique direction so that both outer ends in the X direction face the outdoor side, and are compressed in the X direction by the outer wall material 32 and the sash 36. As a result, at the joint 66, three closed cross sections are formed as an example when viewed from the Y direction. The space inside the three closed cross sections is referred to as a first space 78, a second space 79, and a third space 81. In the present embodiment, the first space portion 78, the second space portion 79, and the third space portion 81 are included in the above-mentioned space portion 39 (see FIG. 2).

The first space portion 78 is surrounded by the amorphous sealing material 72 and the overhanging portion 74C. The second space portion 79 is surrounded by a base portion 74A, an overhanging portion 74B, an overhanging portion 74C, and a mounting portion 64 of the sash 36. The third space portion 81 is surrounded by a base portion 74A, an overhanging portion 74B, an overhanging portion 74C, and an outer wall material 32. The upper and lower ends of the first space portion 78, the second space portion 79, and the third space portion 81 in the Y direction are open. As a result, air and water can flow in the Y direction in the first space portion 78, the second space portion 79, and the third space portion 81. Further, the lower ends of the first space portion 78, the second space portion 79, and the third space portion 81 are connected to the above-mentioned space portion 39A (see FIG. 2).

<Suppressor>
As an example, the suppressing portion 42 shown in FIG. 2 has a regulating member 82 arranged in a part of the space portion 39 and restricting the rise of water W, and an auxiliary space portion 84 communicated with the space portion 39A. Then, the suppressing portion 42 is configured to suppress the rising of water W in the space portion 39.

(Regulatory member)
As an example, the regulating member 82 is arranged in the lower part of the space portion 39B between the standard sealing material 74 and the vertical frame 18 (see FIG. 3) in the space portion 39. Specifically, the regulating member 82 is composed of two sponge materials 86 arranged at intervals in the Y direction in the space 39B. As an example, the two sponge materials 86 are made of EPDM sponge, and each is formed in a rectangular parallelepiped shape long in the Y direction. Further, when viewed from the X direction, the lower sponge material 86 is arranged so as to overlap the lower end portion of the lower frame 58, and the upper sponge material 86 overlaps the upper end portion of the lower frame 58. Have been placed.

As shown in FIG. 3, the sponge material 86 is surrounded by the outer wall material 32, the sheet material 46 (outer wall frame 22) described later, the front wall portion 18B, and the standard sealing material 74 in the X direction and in the X direction. It is in a compressed state in the Z direction. The space between the two sponge materials 86 shown in FIG. 2 is referred to as a decompression unit 87.

In the sponge material 86, ventilation is possible by a plurality of holes (not shown), but with respect to the movement of the water W in the X direction, the Y direction, and the Z direction, the contact between the plurality of hole walls and the water W causes the water W to come into contact with each other. At least some are being regulated. Here, since the regulating member 82 has two sponge materials 86, even if the water W passes through the lower sponge material 86, the passed water W is regulated by the upper sponge material 86. It has become. Since the decompression portion 87 is a space portion having a larger volume than the narrow hole of the sponge material 86, the water W passing through the hole of the lower sponge material 86 infiltrates the decompression portion 87, so that the pressure of water is increased. It is supposed to be released. In other words, in the decompression unit 87, the water is decompressed.

(Auxiliary space)
The auxiliary space portion 84 shown in FIG. 5 is a space portion formed between the support frame 14, the sheet material 46 described later, and the sash 36 (see FIG. 2), and the end portion in the X direction is communicated with the space portion 39A. Is. Although only the auxiliary space portion 84 at the end in the X direction is shown in FIG. 5, the auxiliary space portion 84 actually extends in the X direction.

As shown in FIG. 2, specifically, when viewed from the X direction, the auxiliary space portion 84 includes an upper wall portion 14C, a vertical wall portion 17A, a lower frame 58, a lower frame drainage 59, and a horizontal joint material. It is a space part surrounded by 76 and communicated with the space part 39A. The volume of the auxiliary space portion 84 is set so that the water W is less likely to accumulate in the space portion 39A based on the difference between the predicted volume of the water W flowing (flowing down) through the standard sealing material 74 and the volume of the space portion 39A. It has been decided. In the present embodiment, the volume of the auxiliary space portion 84 is set to be larger than the volume of the space portion 39A.

In other words, the auxiliary space portion 84 flows to the space portion 39A so that the water W flowing in the space portion 39A does not collect in the space portion 39A and the pressure of the space portion 39A does not become higher than the preset pressure. It is designed to function as a storage unit that temporarily stores the fresh water W. The water W flowing into the auxiliary space portion 84 is drained to the outside through the flow path 27 of the drainage member 26. The sponge rubber 28 provided in the flow path 27 suppresses water from blowing up into the auxiliary space portion 84 and enables ventilation.

<Sheet material>
As an example, the sheet material 46 shown in FIG. 5 is made of a CR (chloroprene rubber) sheet and has water resistance. Further, as an example, the sheet material 46 includes a first sheet material 92, a second sheet material 94, and a third sheet material 96 formed in different shapes according to the place where the sheet material 46 is provided. The first sheet material 92 and the second sheet material 94 cover the support frame 14 and the sash frame 16 from the outdoor side. The third sheet material 96 covers the outer wall frame 22 from the outdoor side. The first sheet material 92, the second sheet material 94, and the third sheet material 96 are arranged in the X direction and connected by a joint tape 91.

FIG. 4 shows a state in which the first sheet material 92 is viewed from the X direction. The first sheet material 92 is arranged with the Z direction or the Y direction as the thickness direction. Note that FIG. 4 shows a state in which the first sheet material 92 is attached to the support frame 14 and the sash frame 16 (see FIG. 2) and is bent at a substantially right angle at five points, but before the attachment. The first sheet material 92 has a flat plate shape.

Further, as an example, the first sheet material 92 has three vertical portions 92A, 92C, 92E extending upward in the Y direction and three horizontal portions 92B, 92D, 92F extending indoors in the Z direction in the mounted state. .. In other words, the first sheet material 92 has a structure in which the vertical portion 92A, the horizontal portion 92B, the vertical portion 92C, the horizontal portion 92D, the vertical portion 92E, and the horizontal portion 92F are formed in a stepped shape. As an example, a butyl tape 93 for attaching the first sheet material 92 to the constituent member 12 (see FIG. 2) is provided on the indoor side surfaces of the vertical portions 92A, 92C, and 92E. Further, the vertical portion 92A is provided with an EPDM sponge 95 above the butyl tape 93.

As shown in FIG. 2, the vertical portion 92A is attached to the vertical wall portion 14A from the outdoor side. The lateral portion 92B is attached to the upper wall portion 14C from above. The vertical portion 92C is attached to the vertical wall portion 17A from the outdoor side. The lateral portion 92D is attached to the lower wall portion 17B from above. The vertical portion 92E is attached to the vertical wall portion 17C from the outdoor side. The lateral portion 92F is attached to the upper wall portion 17D from above.

As shown in FIG. 5, as an example, the second sheet material 94 includes a vertical wall portion 14A, an upper wall portion 14C, a first mounting portion 94A attached to the horizontal frame 17, a vertical wall portion 14A, and an upper wall portion 14C. It has a mounting portion 23 and a second mounting portion 94B to be mounted on the vertical frame 18. The first mounting portion 94A has the same configuration as the first sheet material 92, and is connected to the adjacent first sheet material 92 by using a joint tape 91.

The second mounting portion 94B has a lower portion 102 attached to the vertical wall portion 14A and the upper wall portion 14C, an intermediate portion 104 attached to the mounting portion 23, and an upper portion 106 attached to the vertical frame 18. The intermediate portion 104 has an upper surface 104A arranged above the mounting portion 23. The upper surface 104A is a flat surface along the XZ plane. The upper portion 106 has a front surface 106A arranged on the outdoor side in the Z direction with respect to the vertical frame 18. The front surface 106A is a plane along the XY plane.

FIG. 5 shows a state in which the lower sponge material 86 is attached to the upper surface 104A and the front surface 106A, and the upper sponge material 86 is attached to the front surface 106A. In other words, the height of the upper part 106 in the Y direction is higher than the height of the two sponge materials 86 in the Y direction. That is, the sheet material 46 (second sheet material 94) provided between the constituent member 12 and the regulating member 82 has a height in the Y direction higher than the height of the regulating member 82, so that the height of the sheet material 46 (second sheet material 94) is higher than the height of the regulating member 82. The movement of water W to the indoor side of the component 12 is regulated.

As an example, the third sheet material 96 is attached to the vertical wall portion 14A, the first mounting portion 96A attached to the upper wall portion 14C, the second mounting portion 96B attached to the mounting portion 23, and the vertical wall portion 24. It has 3 mounting portions 96C. Further, the third sheet material 96 is connected to the adjacent second sheet material 94 by using a joint tape 91. The third mounting portion 96C is mounted below the through hole 24A of the vertical wall portion 24.

<Compression member>
The compression member 48 shown in FIG. 5 is composed of an EPDM sponge 112 and an EPDM sponge 114 as an example. The EPDM sponge 112 is formed in a plate shape with the Y direction as the thickness direction. Further, the EPDM sponge 112 is formed in a rectangular shape with the Z direction as the lateral direction and the X direction as the longitudinal direction when viewed from the Y direction. The width of the EPDM sponge 112 in the Z direction is about half the width of the mounting portion 23 in the Z direction. Further, the EPDM sponge 112 is attached to a portion indoor from the center of the mounting portion 23 from above, and extends in the X direction from the lower sponge material 86.

The EPDM sponge 114 is formed in a plate shape with the Z direction as the thickness direction. Further, the EPDM sponge 114 is formed in a rectangular shape with the X direction as the lateral direction and the Y direction as the longitudinal direction when viewed from the Z direction. Further, the EPDM sponge 114 is attached to the upper portion 106 of the second sheet material 94 from the outdoor side, and extends in the Y direction adjacent to the lower sponge material 86 and the upper sponge material 86.

As shown in FIG. 3, in a state where the outer wall material 32 is attached to the component member 12, the EPDM sponge 112 is compressed by being sandwiched between the mounting portion 23 (see FIG. 5) and the outer wall material 32 in the Y direction. ing. As a result, the infiltration of water W from the space portion 39 (see FIG. 2) between the mounting portion 23 and the outer wall material 32 is suppressed.

In a state where the outer wall material 32 is attached to the constituent member 12, the EPDM sponge 114 is compressed by being sandwiched between the sheet material 46 and the outer wall material 32 in the vertical wall portion 24 in the Z direction. As a result, the infiltration of water W from the space portion 39 (see FIG. 2) between the vertical wall portion 24 and the outer wall material 32 is suppressed.

<Construction of waterproof structure>
As shown in FIG. 5, the first sheet material 92, the second sheet material 94, and the third sheet material 96 are attached to the constituent member 12. Then, the sponge material 86 is attached to the second sheet material 94. Further, the EPDM sponge 112 is attached to the mounting portion 23, and the EPDM sponge 114 is attached to the upper portion 106. Subsequently, the drainage member 26 (see FIG. 2) is attached to the component member 12.

Subsequently, as shown in FIGS. 6, 7, and 8, the sash 36 is attached to the component member 12. As a result, an auxiliary space portion 84 (see FIG. 2) is formed between the sash 36 and the sheet material 46. In addition, in FIG. 6, FIG. 7 and FIG. 8, the amorphous sealing material 72 is shown in order to show the arrangement state of the amorphous sealing material 72 in an easy-to-understand manner, but in the actual work process, the sash 36 is attached. At the stage, the amorphous sealing material 72 is not provided. Further, in FIGS. 6, 7 and 8, the standard sealing material 74 and the regulating member 82 (see FIG. 2) are not shown.

Subsequently, the outer wall material 32 (see FIG. 2) is placed on the mounting portion 23, and the outer wall material 32 is attached to the constituent member 12 using bolts (not shown). As a result, as shown in FIG. 3, the EPDM sponge 112 is compressed by being sandwiched between the mounting portion 23 (see FIG. 5) and the outer wall material 32 in the Y direction. Further, the EPDM sponge 114 is compressed by being sandwiched between the sheet material 46 and the outer wall material 32 in the vertical wall portion 24 in the Z direction. At this time, a joint 66 is formed between the sash 36 and the outer wall material 32.

Subsequently, the standard sealing material 74 is inserted into the joint 66. At this time, the lower part of the standard sealing material 74 comes into contact with the sponge material 86. The standard sealing material 74 is compressed by being sandwiched between the sash 36 and the outer wall material 32 in the X direction.

Subsequently, as shown in FIG. 2, an amorphous sealing material 72 is provided at the joint 66 in accordance with the outer edge portion of the sash 36. As a result, the joint 66 is closed and the space 39A is formed. In this way, the waterproof structure 30 is formed. A horizontal joint material 76 is provided between the sash 36 and the drainage material 26, and between the outer wall material 32 and the drainage material 26.

[Action]
Next, the operation of this embodiment will be described.

In the waterproof structure 30 shown in FIG. 2, water W may infiltrate the indoor side (space 39) of the joint 66. For example, when a part of the amorphous sealing material 72 is damaged, water W may infiltrate into the indoor side of the joint 66 from the damaged part. Further, the sash 36 is arranged (inset) indoors with respect to the outer wall material 32, and the width of the lower frame 58 in the Z direction is wider than the width of the vertical frame 56 in the Z direction. The frame 58 will receive more rainwater. Therefore, a part of the water W that has flowed through the outdoor side portion of the sash 36 may invade the space portion 39 through the gap existing in the sash 36 itself. Here, in the waterproof structure 30, the case where the water W has entered the space 39 will be described.

The water W that has entered the space 39B is, for example, flowed downward through the first space 78 and reaches the space 39A. On the other hand, the water W that has entered from the outdoor side at the end of the sash 36 in the X direction flows into the space 39A. Here, since the auxiliary space portion 84 having a larger volume than the space portion 39A is connected to the space portion 39A, a part of the water W that has reached the space portion 39A flows to the auxiliary space portion 84. Therefore, it is suppressed that the water level of the water W in the space portion 39A rises excessively (to the extent that the water level overflows from the space portion 39A to the component 12 side).

A part of the water W of the space portion 39A and the water W of the auxiliary space portion 84 are discharged to the outside through the flow path 27. As described above, in the water blocking structure 30, the vertical joint portion (joint 66) is caused by the water W flowing through the space 39 between the vertical joint material 38 and the constituent member 12 between the outer wall material 32 and the sash 36. The water W that has entered the water can be drained.

On the other hand, in the water blocking structure 30 shown in FIG. 9, for example, it is assumed that water W (rainwater) in a state of being pressurized by a strong wind infiltrates into the flow path 27, that is, so-called blow-up occurs. A part of the water W that has entered the flow path 27 may enter (inflow) into the space 39A through the auxiliary space 84. When water W (rain and wind) enters the space 39A from the outside, the water W in the space 39A is pressurized, so that the water W is further blown up in the space 39A. It can occur.

Here, the blow-up of water W from the space portion 39A to the space portion 39B is suppressed by the amorphous sealing material 72 and the fixed-shaped sealing material 74, and is also suppressed by the suppressing portion 42. Specifically, the water W that is raised by pressurization is suppressed from rising by coming into contact with the amorphous sealing material 72. Further, among the water W raised by pressurization, the water W that has infiltrated into each of the above-mentioned spaces of the standard sealing material 74 is a store because the standard sealing material 74 extends long in the Y direction. It is difficult to penetrate inside and eventually falls due to gravity.

Further, in the space 39B, the rising water W is brought into contact with the regulating member 82 (sponge material 86) to regulate the rising of the water W, so that the rising of the water W is suppressed. As described above, in the waterproof structure 30, in the building 10 in which the sash 36 is arranged indoors with respect to the outer wall material 32, the water W that has infiltrated the joint 66 can be drained, and the water W to the joint 66 can be drained. It is possible to suppress the blow-up.

Further, in the water blocking structure 30, the restricting member 82 is arranged in a part of the space portion 39B, but the other portion of the space portion 39B (for example, the overhanging portion 74B (see FIG. 3)) and the sponge material 86 are formed. Since the space) is open, the water W in the space 39B can be drained. Further, in a part of the space 39B, the regulating member 82 regulates the rise of the water W, so that the rise of the water W can be suppressed. In this way, by providing the regulating member 82 as the suppressing portion 42 while using the standard sealing material 74, it is possible to achieve both drainage and suppression of water W blowing up.

Further, in the water blocking structure 30, two sponge materials 86 are provided as regulating members 82 at intervals in the height direction. Therefore, even if the bottom sponge material 86 cannot completely suppress the water W from rising, the second sponge material 86 can suppress the water W from rising. Further, since the pressure reducing portion 87, which is a space between the two sponge materials 86, functions as a pressure releasing portion, the blowing pressure of the water W is reduced, and the blowing up of the water W can be further suppressed.

In addition, in the water blocking structure 30, a sheet material 46 whose height in the Y direction is higher than the height of the regulating member 82 is provided between the constituent member 12 and the regulating member 82 (see FIG. 3). Therefore, when a part of the water W that cannot be regulated by the regulating member 82 blows up in the space 39B, the sheet material 46 regulates the movement of the water W to the indoor side with respect to the constituent member 12. As a result, it is possible to prevent water W from entering the indoor side of the component member 12.

Further, in the water blocking structure 30 shown in FIG. 3, since the gap between the outer wall material 32 and the constituent member 12 is closed by the compression member 48, the intrusion of water W into the gap between the outer wall material 32 and the constituent member 12 is suppressed. can do.

Further, in the water blocking structure 30 shown in FIG. 2, a part of the water W infiltrated into the space portion 39A can infiltrate into the auxiliary space portion 84 to prevent the water W from overflowing in the space portion 39. can. Further, since the space portion 39A and the auxiliary space portion 84 are connected to each other, the volume of the space portion pressurized by the blow-up is larger than the volume of the space portion 39 alone, so that the space portion 39 is blown up. The pressing force of the water W to be removed is reduced. As a result, it is possible to suppress the blow-up of water W in the space 39B.

In addition, in the water blocking structure 30, when the amount of water W flowing into the auxiliary space portion 84 increases, excess water W passes through the flow path 27 between the constituent member 12 and the drainage member 26 and the opening 29 Is drained from. As a result, it is possible to prevent water W from overflowing from the auxiliary space portion 84 to the indoor side (constituent member 12 side).

Further, in the water blocking structure 30, since a part of the air in the auxiliary space portion 84 flows out to the outside (outdoor) through the sponge rubber 28, the pressure increase in the auxiliary space portion 84 is suppressed. Further, the sponge rubber 28 suppresses the infiltration of a part of the water W from the outside into the auxiliary space portion 84. By these actions, the pressing force of the water W blowing up toward the space 39 is reduced, so that the intrusion of water into the auxiliary space 84 and the space 39 can be suppressed.

Further, in the waterproof structure 30 shown in FIG. 3, since the waterproof tape 65 closes the gap between the front wall portion 18B and the mounting portion 64, the space portion 39 (see FIG. 2) connects the front wall portion 18B and the mounting portion 64. It is possible to suppress the infiltration of water W into the gap.

The present invention is not limited to the above embodiment.

The restraining portion 42 of the water blocking structure 30 is not limited to the one having the regulating member 82. For example, by providing a blowing means in a part of the portion forming the space portion 39B and blowing air toward the space portion 39B. It may regulate the rise of water W. Further, the number of the regulating members 82 (sponge material 86) may be one or three or more. Further, a plurality of regulating members 82 arranged in the Y direction may be in contact with each other in the Y direction.

Further, in the water blocking structure 30, the sheet material 46 may not be provided between the constituent member 12 and the regulating member 82. Further, in the water blocking structure 30, the compression member 48 may not be provided between the constituent member 12 and the outer wall material 32. In addition, in the water blocking structure 30, if the size of the space portion 39A is sufficiently secured, the auxiliary space portion 84 may not be formed. The volume of the auxiliary space portion 84 may be smaller than the volume of the space portion 39A as long as it is configured to enable drainage from the space portion 39A and suppression of blow-up to the space portion 39B.

Further, in the water blocking structure 30, the drainage member 26 may not be provided. In addition, in the water blocking structure 30, the sponge rubber 28 may not be provided in the flow path 27. The number of sponge rubbers 28 may be singular or plural.

The outer wall material 32 is not limited to ALC, and may be a precast concrete plate, an extruded plate, or the like.

10 Building 12 Component 26 Drainage material (an example of drainage member)
27 Flow path 28 Sponge rubber (an example of a porous member)
30 Water-stop structure (an example of a building water-stop structure)
32 Outer wall material 33A Outer surface 36 Sash 38 Vertical joint material 39 Space part 42 Suppressing part (example of suppressing means)
46 Sheet material (an example of water blocking member)
48 Compression member 82 Regulatory member 84 Auxiliary space

Claims (8)

The outer wall material provided on the outdoor side with respect to the constituent members that form a part of the building,
A sash provided on the constituent member on the indoor side of the outer wall material on the outdoor side of the outer wall material adjacent to the outer wall material in the lateral direction.
A vertical joint material extending in the height direction of the building between the outer wall material and the sash and forming a space portion through which water flows between the outer wall material and the sash.
Suppressing means for suppressing the blow-up of water in the space,
The waterproof structure of the building with. The water blocking structure of a building according to claim 1, wherein the suppressing means is arranged in a part of the space and has a regulating member for regulating the rise of water. The water blocking structure for a building according to claim 2, wherein a plurality of the regulating members are arranged at intervals in the height direction. A water blocking member is provided between the constituent member and the restricting member so that the height in the height direction is higher than the height of the restricting member and restricts the movement of water to the indoor side of the constituent member. The waterproof structure of the building according to claim 2 or 3. The water blocking structure of a building according to any one of claims 2 to 4, wherein a compression member that is compressed by being sandwiched between the constituent member and the outer wall material is provided. The water blocking means for a building according to any one of claims 1 to 5, wherein the suppressing means has an auxiliary space portion formed between the constituent member and the sash and communicated with the space portion. structure. The water blocking structure for a building according to claim 6, wherein the constituent member is provided with a drainage member that forms a flow path for draining water in the auxiliary space portion together with the constituent member. The water-stopping structure for a building according to claim 7, wherein a porous member that suppresses water from blowing up into the auxiliary space and is made breathable is provided in a part of the flow path.

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