JP2010053591A - Draining member for extrusion-molded cement plate and waterproof structure using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a draining member capable of unfailingly discharging the rainwater intruded into the joint part of vertically arranged extrusion-molded cement plates, from the front face of the extrusion-molded cement plate to the outside. <P>SOLUTION: This draining member 1 for extrusion-molded cement plate is installed, at a bed joint part when the extrusion-molded cement plates S in which a plurality of hollow parts 100 opened at the upper and lower end faces are arranged parallel to each other are installed vertically. The draining member includes: a band plate-like horizontal part 2, disposed in such a manner as to face the lower end surface 102 of the injection-molded cement plate S; a vertically extending part 3 which rises from the rear side of the horizontal part 2 and is arranged, in such a manner as to face the rear surface 103 of the extrusion-molded cement plate S; groove parts 4 provided along three sides that are the front side 2a, the left side 2b, and the right side 2c of the horizontal part 2; and a drainage 5, which communicates with the groove part along the front side 2a for discharging the rainwater in the groove part to the outside. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a draining material for extrusion-molded cement board (hereinafter also simply referred to as “draining material”) and a waterproof structure using the same. More specifically, when an extruded cement board having a hollow portion is vertically stretched so that the hollow portion is in a vertical direction to form an outer wall of a building, a drainer provided at a horizontal joint between the extruded cement boards is provided. The present invention relates to a material and a waterproof structure of a building outer wall using the same.

  An extrusion-molded cement board having a plurality of hollow portions opened at the upper and lower ends is widely used as an outer wall material of a building because it is lightweight and has high strength. In an outer wall using such an extruded cement board, generally, an underlying steel material such as an angle is attached to a building frame, and the extruded cement board is attached using a mounting bracket such as a Z clip provided on the back surface of the extruded cement board. Is attached to the base steel material.

When the outer wall is formed of such an extruded cement board, a horizontal joint is formed between the extruded cement boards adjacent in the vertical direction, and a vertical joint is formed between the extruded cement boards adjacent in the left and right. By inserting a packing material (backup material) into these horizontal joints and vertical joints, and then filling with a sealing material, entry of rainwater from these joints into the interior of the building is prevented (primary waterproofing).
Further, in the case where the extruded cement board is vertically stretched continuously up and down, when a higher waterproof performance is required for the joint portion, a draining material is provided on the horizontal joint portion (secondary waterproofing).

  As a waterproof structure using such a draining material, Patent Document 1 discloses that the hollow portion is inserted into the horizontal joint of the extrusion-molded cement plate having a hollow portion from the inner surface side of the extrusion-molded cement plate. A waterstop provided with a draining material having a hook-like portion extending along the guide and a guide portion bent downward from the tip of the hook-like portion to guide the water collected in the hook-like portion to the lower side of the hollow portion The structure is described.

  In the still water structure described in Patent Document 1, rainwater that has entered the hollow part due to a joint defect in the upper part of the extruded cement board above the outer wall made of the extruded cement board flows downward in the hollow part. In the joint portion on the side, intrusion of rainwater to the indoor side is prevented by the bowl-shaped portion of the draining material and the rising side on the inner surface side of the draining material, and this rainwater is bent downward from the tip of the bowl-shaped portion. The guided portion is led to the hollow portion of the lower extruded cement plate and finally discharged from the hollow portion of the lowermost extruded cement plate.

  However, since the waterstop structure described in Patent Document 1 is configured to allow rainwater to flow through the hollow portion of the lower extruded cement plate, the mating portion between the extruded cement plate and the sash of the opening such as a window (extruded cement) The water stop structure cannot be used at the boundary between the lower part of the plate and the upper part of the sash, and measures such as providing a waterproof structure on the sash side or allowing rainwater to escape from the hollow part to the area where the sash is avoided are required. there were.

  On the other hand, Patent Document 2 discloses a drainage structure of an outer wall formed by vertically arranging extruded cement plates having hollow portions, and a backup material having a drainage vertical hole is used as a lower part of the drainage plate. A first inner drain plate integrally attached and fixed to the front surface of the piece, and a second inner drain plate integrally attached and fixed to the front surface of the lower hanging piece of the drain plate with a lateral groove on the upper portion thereof It is described that it is mounted in parallel in the horizontal joint.

  In the drainage structure described in Patent Document 2, the first inner drainage plate is attached to a joint portion where the extruded cement plate is continuous up and down on the outer wall composed of the extruded cement plate, and the upper extrusion is caused by a defect in the joint portion. Rainwater that has entered the hollow part of the molded cement board is guided to the hollow part of the lower extruded cement board through the drainage vertical hole of the first inner draining board. Moreover, the said 2nd internal draining board is attached in the joint part (extrusion molding cement board lower part and sash upper part) of the extrusion molding cement board and sash part in an opening part. Rainwater that has entered the hollow part of the upper extruded cement board due to a joint defect or the like is waterproofed to the sash side by this second inner drainage board and led to the first inner drainage board without an opening. It is burned.

Utility Model Registration No. 3018587 Specification JP-A-11-229543

  However, in the case of the drainage structure described in Patent Document 2, it is necessary to guide rainwater that has entered from the second inner drainage plate to the first inner drainage plate in the joint portion, and when the opening width is large, the intruded rainwater flows. The distance increases. In this case, a plurality of internal water drain plates are joined, but if the number of joints increases, rainwater may leak from the joints of the internal water drain plates to the lower part. Further, depending on the state of installation of the inner water drainage plate and the construction accuracy, there may be a part where the flow of rainwater deteriorates and the rainwater stays on the inner water drainage plate. In particular, when the opening width is large as in the case of a continuous window (there may be several tens of meters), it is difficult to give an appropriate gradient to the portion where the rainwater flows, and the rainwater tends to stay. Furthermore, if rainwater stays on the drainage plate, there is a possibility that the lower part of the extruded cement board will always be in a wet state. If this is for a long period of time, mold will form on the hollow part of the extruded cement board or on the back side. There is also a possibility that this mold may affect the indoor environment.

  The present invention has been made in view of such circumstances, and is an extrusion that can reliably discharge rainwater that has entered the joints of a vertically-extruded extruded cement board to the outside from the front surface of the extruded cement board. It is an object of the present invention to provide a drainage material for molded cement board and a waterproof structure using the same.

The draining material according to the first aspect of the present invention is a draining material for an extrusion-molded cement board provided at a horizontal joint portion when vertically stretching an extrusion-molded cement board in which a plurality of hollow portions opened at upper and lower end surfaces are juxtaposed. Because
A strip-shaped horizontal portion disposed opposite the lower end surface of the extruded cement plate,
Standing up from the rear side of this horizontal portion, standing portion disposed to face the back of the extruded cement plate,
A groove provided along the three sides of the front side, the left side and the right side of the horizontal part;
A drainage channel is provided which communicates with the groove along the front side and drains rainwater in the groove to the outside.

  In the draining material according to the first aspect of the present invention, a groove portion is provided along three sides of a strip-like horizontal portion arranged to face the lower end surface of the extruded cement plate, and the horizontal portion of the groove portion is provided with the horizontal portion. A drainage channel is provided which communicates with the groove portion along the front side of the portion and discharges rainwater in the groove portion to the outside. Thereby, the rainwater that has entered from the joint portion reaches the horizontal portion of the draining material, for example, via the hollow portion of the extruded cement board, and then flows into the groove portion. And the rainwater which flowed into this groove part is discharged | emitted outside from the front surface of an extrusion-molded cement board by the drainage channel connected with the said groove part. For this reason, even in the joint portion between the extrusion-molded cement board and the opening, it is possible to complete the drainage of the rainwater only by this opening without flowing the rainwater to the left and right avoiding the opening as in the prior art. A sufficient secondary waterproof structure can be obtained even in the joint portion. Thereby, even when opening width is large like a continuous window, the reliability of the secondary waterproofing in a joint part can be improved.

In addition, the distance through which rainwater flows can be shortened by adjusting the size of the draining material and the number of drainage channels. As a result, it is possible to easily give a gradient to the groove, and to ensure the rainwater stays in the groove. Can be eliminated.
Further, when the draining material of the present invention is used for the horizontal joints of the upper and lower extrusion-molded cement boards, the width of the draining material is limited to one extrusion molding cement board or about two to three, Even if water leakage occurs due to the loss of one sealing material, the location of water leakage can be easily identified by confirming the drainage from the drainage channel. Thereby, repair of a sealing material can be performed quickly and easily.
In the present specification, “front” refers to the outdoor side when a draining material is used for the horizontal joint portion of the outer wall, and “rear” or “back” refers to the indoor side.

  It is preferable that the folded part which contact | abuts to the back side thick part of an extrusion-molded cement board is provided in each edge part on either side. In this case, rainwater flowing from the hollow portion can be more reliably prevented from entering the indoor side, and the standing portion can be reinforced.

  The groove includes a hanging portion extending downward from the front side, the left side and the right side of the horizontal portion, a bottom portion extending horizontally from the lower end of the hanging portion, and a standing wall portion extending upward from the tip of the bottom portion. And can be configured. In this case, the horizontal part of the draining material and the hanging part, the bottom part, and the standing wall part constituting the groove part can be produced by molding the metal thin plate, and the draining material can be produced easily and at low cost. .

  It is preferable that the bottom part provided along the front side of the horizontal part among the bottom parts is formed with a gradient descending toward the drainage channel. In this case, rainwater that has flowed into the groove can be more reliably guided to the drainage channel. In the present invention, the width of the draining material can be set as small as desired, i.e., the distance through which rainwater flows through the groove can be set short, so that a gradient can be easily provided.

  Among the standing wall portions, the heights of the standing wall portions provided along the left and right sides of the horizontal portion are arranged in the front-rear direction in close contact with the end portions at the left and right end portions of the draining material for the extruded cement board. It is preferable that the height is set to be equal to or less than the height of the gasket to be provided. In this case, rainwater that has entered from the vertical joint between the left and right extruded cement boards can be caused to flow into the groove from the gasket, and the rainwater can be reliably prevented from entering the indoor side.

The draining material according to the second aspect of the present invention is a draining material for an extruded cement board provided at a horizontal joint when vertically extending an extruded cement board in which a plurality of hollow portions opened at upper and lower end surfaces are juxtaposed. Because
Consists of left side, middle and right side,
The left side portion is erected from the left side horizontal portion disposed opposite to the lower end surface of the extruded cement plate, and the rear side of the left side horizontal portion, and is disposed opposite the back surface of the extruded cement plate. A left standing part, and a left groove provided along two sides of the front side and the left side of the left horizontal part,
The intermediate portion is erected from an intermediate horizontal portion disposed opposite to the lower end surface of the extruded cement board, and a rear side of the intermediate horizontal portion, and is disposed opposite to the back surface of the extruded cement board. An intermediate standing part, and an intermediate groove part provided along the front side of the intermediate horizontal part,
The right side portion is erected from the right side horizontal portion disposed opposite to the lower end surface of the extruded cement plate, and the rear side of the right side horizontal portion, and is disposed opposite the back surface of the extruded cement plate. A right standing part, and a right groove provided along two sides of the front side and the right side of the right side horizontal part,
Communicating with at least one of the left groove portion along the front side of the left horizontal portion, the intermediate groove portion along the front side of the intermediate horizontal portion, and the right groove portion along the front side of the right horizontal portion, It is characterized by a drainage channel for discharging rainwater to the outside.

  In the draining material according to the second aspect of the present invention, since the draining material is composed of three parts, that is, the left side part, the middle part and the right side part, the effect obtained by the draining material according to the first aspect is obtained. In addition, by appropriately changing the width of the intermediate portion, it is possible to provide a draining material according to the size (width) of the extruded cement board easily and at low cost.

  It is preferable that the left end portion of the left side portion and the right end portion of the right side portion are each provided with a folded portion that comes into contact with the back side thick portion of the extruded cement plate. In this case, rainwater flowing from the hollow portion can be more reliably prevented from entering the indoor side, and the standing portion can be reinforced.

  The waterproof structure of the present invention is a waterproof structure of a horizontal joint when vertically stretching an extruded cement board in which a plurality of hollow parts opened at upper and lower end surfaces are juxtaposed, using the above-described drained material for an extruded cement board. And the draining material for the extruded cement board is arranged so as to abut on a base angle for supporting the extruded cement board.

  In the waterproof structure of the present invention, since the drainage material described above is used, the rainwater that has entered from the joint portion reaches the horizontal portion of the drainage material, for example, via the hollow portion of the extruded cement plate, and then flows into the groove portion. And the rainwater which flowed into this groove part is discharged | emitted outside by the drainage channel connected with the said groove part. For this reason, even in the joint portion between the extrusion-molded cement board and the opening, it is possible to complete the drainage of the rainwater only by this opening without flowing the rainwater to the left and right avoiding the opening as in the prior art. A sufficient secondary waterproof structure can be obtained even in the joint portion. Thereby, even when opening width is large like a continuous window, the reliability of the secondary waterproofing in a joint part can be improved.

  According to the draining material of the present invention and the waterproof structure using the same, the rainwater that has entered the joints of the vertically-extruded cement board can be reliably discharged to the outside from the front surface of the extruded cement board.

Hereinafter, embodiments of a draining material and a waterproof structure using the same according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective explanatory view of a draining material 1 according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the draining material 1 shown in FIG. The draining material 1 is provided at a horizontal joint when the extruded cement board S (see FIG. 3) in which a plurality of hollow portions 100 opened at the upper and lower end surfaces are juxtaposed is vertically stretched.

  The draining material 1 includes a horizontal portion 2 disposed to face the lower end surface 102 (see FIGS. 4 to 5) of the extruded cement board S and an upright portion disposed to face the back surface 103 of the extruded cement board S. 3, a groove portion 4 provided along the three sides of the front side 2 a, the left side 2 b and the right side 2 c of the horizontal portion 2, and a drain hole 5 which is a drainage channel for discharging rainwater in the groove portion 4 to the outside. And. In addition, the left and right ends of the draining material 1 are provided with folded portions 6 that come into contact with the back side thick portion 101 of the extruded cement plate S.

  The horizontal portion 2 has a strip shape, and the dimension in the longitudinal direction is set in accordance with the width of the extrusion-molded cement plate S in which the draining material 1 is used (usually about 592 to 1185 mm). In the present embodiment, an ascending inclined portion 7 is provided on the rear side of the horizontal portion 2 so as to be continuous with the horizontal portion 2, and the upright portion 3 is erected in a substantially vertical direction from the inclined portion 7. ing. In the present embodiment, as will be described later, an angle material is used as the base steel material for attaching the extrusion-molded cement board S to the housing of the building. Therefore, the horizontal portion 2 avoids the rounded corners on the inner surface side of the angle material. In order to bring the upright portion 3 into close contact with the inner surface of the angle member, an inclined portion 7 is provided. However, the inclined portion 7 can be omitted depending on the shape of the base steel material. In this case, the upright portion 3 is erected in a substantially vertical direction directly from the rear side of the horizontal portion 2.

  The groove portion 4 includes a drooping portion 8 extending downward from the front side 2a, the left side 2b and the right side 2c of the horizontal portion 2, a bottom portion 9 extending in the horizontal direction from the lower end of the drooping portion 8, and the tip of the bottom portion 9 It is comprised with the standing wall part 10 extended upwards. The height h1 of the standing wall portion 10 is such that the tip of the standing wall portion 10 is an extruded cement plate when the draining material 1 is disposed between the flat portion of the receiving angle described later and the lower end surface 102 of the extruded cement plate S. In order to avoid contact with the lower end surface 102 of S, the height is set to be slightly lower (for example, about 5 mm) than the height h2 of the hanging portion 8. Moreover, it is preferable that the bottom part provided in the bottom part 9 along the front side 2a of the horizontal part 2 is formed with a gradient descending toward the drain hole 5. In this case, rainwater that has flowed into the groove 4 can be more reliably guided to the drain hole 5 and prevented from staying in the groove 4. In the present invention, the width of the draining material can be set as small as desired, that is, the distance through which rainwater flows through the groove portion 4 can be set short, so that a gradient can be easily provided.

  The drain hole 5 is attached to the standing wall portion 10 a along the front side 2 a of the horizontal portion 2 of the standing wall portion 10. The axial length of the drainage hole 5 made of a short cylindrical body is such that the tip surface of the drainage hole 5 slightly protrudes from the outer surface of the extruded cement board S when the draining material 1 is disposed in the horizontal joint. (See FIG. 4).

  The draining material 1 can be made of a metal such as aluminum or stainless steel or a synthetic resin such as polyvinyl chloride. In the case of the shape shown in FIG. 1, the horizontal portion 2 of the draining material 1 and the hanging portion 8, the bottom portion 9, and the standing wall portion 10 constituting the groove portion 4 are formed by processing a thin metal plate having a thickness of about 0.4 mm. The draining material 1 can be produced easily and at low cost.

  FIG. 3 is an explanatory diagram of the state of use of the draining material shown in FIG. 1. In this example, for the sake of simplicity, three extruded cement boards S are juxtaposed in the left-right direction. In general, a plurality of extruded cement plates S are also provided in the vertical direction, and a plurality of extruded cement plates S are also provided in the horizontal direction. In the draining material 1, the horizontal portion 2 of the draining material 1 faces the lower end surface of the extruded cement plate S between the lower end surface of the extruded cement plate S and the inner horizontal surface 12 a of the receiving angle 12 that is the base steel material. It is arranged as follows. In the example shown in FIG. 3, one draining material 1 is used for one extruded cement plate S. However, by appropriately changing the length of the draining material 1, a plurality of extruded cement plates S can be formed. It is also possible to have a configuration that straddles.

FIG. 4 is a cross-sectional explanatory view when the draining material shown in FIG. 1 is provided on the horizontal joint at the top of the sash, and the structural material of the building frame is not shown for simplicity.
In FIG. 4, reference numeral 13 denotes an opening reinforcing angle, and a sash 15 constituting an opening (window) is attached to a rod-shaped opening attaching member 14 welded to the opening reinforcing angle 13. The upper part of the extruded cement plate S is attached to an L-shaped angle (not shown), which is a base steel material attached to a building frame, by a fitting such as a Z clip so that the hollow part 100 is in a vertical direction. The lower part is placed on the inner horizontal surface 12a of the receiving angle 12 which is a base steel material attached to the opening reinforcing angle 13.

  The draining material 1 is disposed on the upper side of the receiving angle 12 so that the horizontal portion 2 and the standing portion 3 abut against the inner horizontal surface 12a and the inner vertical surface 12b of the receiving angle 12, respectively. Then, the extrusion-molded cement board S is placed on the receiving angle 12 in a state where the packing material 16 for adjustment of entering and exiting is sandwiched between the back surface 103 and the standing part 3 of the draining material 1. That is, the extrusion-molded cement board S is placed on the receiving angle 12 with the draining material 1 interposed therebetween. At this time, the horizontal part 2 of the draining material 1 is at a position facing the lower end surface 102 of the extruded cement board S, and the upright part 3 is at a position facing the back surface 103 of the extruded cement board S.

  A groove portion along the front side 2 a of the horizontal portion 2 in the groove portion 4 of the draining material 1 is disposed in a horizontal joint portion formed between the extruded cement board S and the sash 15. And the backup material 17 is inserted so that the front surface of the standing wall part 10a which comprises this groove part may be contacted, and the sealing material 18 is driven in the front surface of this backup material 17 next. The drain hole 5 penetrates the backup material 17 and the sealing material 18, and its tip protrudes from the surface of the sealing material 18 to the outside.

  As shown in FIG. 5, in the vertical joint between the left and right extruded cement plates S, a groove along the left side 2 b or the right side 2 c of the horizontal portion 2 is disposed in the groove 4 of the draining material 1. Folded portions 6 provided at both ends of the material 1 are in contact with the back side thick portion 101 of the extruded cement plate S. In FIG. 5, only one extruded cement board S in the vertical joint is shown for simplicity.

  A gasket 20 is inserted between the groove portions of the left and right draining materials 1 and the back side thick portion 101 of the extruded cement plate S, and the gasket 20 is disposed in the vertical direction along the vertical direction. And a lateral gasket 22 disposed in the front-rear direction along the groove. Of the standing wall portions, the height of the standing wall portion provided along the left side 2b or the right side 2c of the horizontal portion 2 is set to be equal to or less than the height h3 of the lateral gasket 22. As a result, rainwater that has entered from the vertical joint between the left and right extruded cement plates can be caused to flow into the groove portion from the lateral gasket 22, and the rainwater can be reliably prevented from entering the indoor side. .

  In the horizontal joint portion, for example, when rainwater enters the hollow portion 100 of the extruded cement plate S due to a defect in the sealing material constituting the joint portion, the rainwater flows downward from the hollow portion 100. 1 is prevented from flowing into the sash 15 side. In addition, rainwater that has turned to the back side of the extruded cement board S is prevented from flowing into the room by the upright portion 3 of the draining material 1. The rainwater that flows in flows from the horizontal portion 2 to the groove portion 4 and is finally discharged from the drain hole 5 to the outside.

  On the other hand, in the vertical joint portion, the vertical gasket 21 provided in the back side thick portion 101 of the extruded cement plate S prevents rainwater from entering the indoor side, and the rainwater flowing downward through the vertical joint portion is the horizontal gasket. 22 is prevented from flowing into the sash 15 side, flows into the groove portion 4 of the draining material 1 and is finally discharged from the drain hole 5 to the outside.

  According to the draining material 1 according to the present embodiment, the rainwater that has entered from the joint portion is discharged from the front surface of the extruded cement board S, so that even in the joint portion between the extruded cement board S and the sash 15 as in the conventional case. In addition, it is possible to complete the drainage of the rainwater only by the sash 15 without flowing the rainwater to the left and right by avoiding the sash 15, and a sufficient secondary waterproof structure can be provided even in the joint portion with the sash 15. Thereby, even when opening width is large like a continuous window, the reliability of the secondary waterproofing in a joint part can be improved.

  Further, the distance through which rainwater flows can be shortened by adjusting the size of the draining material 1 and the number of drain holes 5, and as a result, the groove portion 4 can be easily given a gradient, and rainwater in the groove portion 4 can be provided. Can be surely eliminated.

  In addition, the intrusion of rainwater from the joint portion described above is deteriorated due to, for example, a temperature change in which the sealing material is repeated over a long period, and the adhesive force between the extruded cement sheet S and the sealing material is lost, and the interface peels off. Therefore, it is considered that rainwater enters from that portion. However, since it is usually impossible for the sealing material to be lost entirely, even if rainwater intrusion occurs due to a joint failure, a large amount of rainwater does not flow. Rainwater is not always drained. And since rainwater is not drained in large quantities from the drain hole 5, even if the drain hole 5 exists on an opening part, the flow of rain water from the said drain hole 5 does not affect an opening part.

6 is a perspective explanatory view of a draining material 30 according to another embodiment of the present invention, and FIG. 7 is a perspective explanatory view of a left side portion 31 of the draining material 30 shown in FIG. The draining material 30 is composed of three parts, a left side part 31, an intermediate part 41 and a right side part 51.
The left side portion 31 is erected from the left side horizontal portion 32 disposed to face the lower end surface of the extruded cement plate, and the rear side of the left side horizontal portion 32, and is disposed to face the back surface of the extruded cement plate. Left side standing portion 33 and left side groove portion 34 provided along the two sides of the left side and the front side of left side horizontal portion 32. Further, a left folded portion 36 is provided at the left end of the left portion 31 so as to come into contact with the thick portion on the back side of the extruded cement board. Further, a drainage hole 35 is provided which communicates with the left groove 34 and discharges rainwater in the groove including the left groove 34 to the outside.

  The intermediate portion 41 is disposed so as to be opposed to the lower end surface of the extruded cement board, the intermediate horizontal portion 42 is erected from the rear side of the intermediate horizontal portion 42, and is disposed to face the back surface of the extruded cement board. The intermediate standing part 43 and the intermediate groove part 44 provided along the front side of the intermediate horizontal part 42 are provided.

  The right side part 51 is erected from the rear side of the right side horizontal part 52 and the right side horizontal part 52 arranged to face the lower end surface of the extruded cement board, and is arranged to face the back side of the extruded cement board. The right standing portion 53 and the right groove portion 54 provided along the two sides of the right side and the front side of the right side horizontal portion 52 are provided. Moreover, the right side folding | returning part 56 contact | abutted with the back side thick part of an extrusion-molded cement board is provided in the right side edge part of the right side part 51. As shown in FIG.

  In the draining material 30 shown in FIG. 6, the draining material 30 is composed of three parts, that is, a left side part 31, an intermediate part 41 and a right side part 51, so that the draining material 1 shown in FIGS. In addition to the effect obtained, the draining material 30 corresponding to the size (width) of the extrusion-molded cement board can be provided easily and at low cost by appropriately changing the width of the intermediate portion 41.

  When the draining material of the present invention is used for the horizontal joints of the upper and lower extrusion-molded cement plates, the width of the draining material is limited to one extrusion molding cement plate or about two to three, so that Even if water leaks due to a loss of one sealing material, the location of the water leak can be easily identified by checking the drainage from the drainage channel. Thereby, repair of a sealing material can be performed quickly and easily. In the conventional method of sequentially guiding rainwater to the hollow portion of the extruded cement board, since rainwater is discharged from the lowermost extruded cement board, it is difficult to specify the water leakage position.

It is a perspective explanatory view of one embodiment of the draining material of the present invention. It is a cross-sectional view of the draining material shown in FIG. It is a use condition explanatory view of the draining material shown in FIG. It is a cross-sectional explanatory drawing when the draining material shown by FIG. 1 is provided in the horizontal joint part of the sash upper part. It is perspective explanatory drawing which shows the waterproof structure of the left side edge part of the draining material. It is an isometric view explanatory drawing of other embodiment of the draining material of this invention. FIG. 7 is a perspective explanatory view of the left side portion of the draining material shown in FIG. 6.

Explanation of symbols

1 Draining material 2 Horizontal part 3 Standing part 4 Groove part 5 Drain hole (drainage channel)
6 Folded portion 7 Inclined portion 8 Hanging portion 9 Bottom portion 10 Standing wall portion 12 Receiving angle 15 Sash 16 Packing material 17 Backup material 18 Sealing material 20 Gasket 21 Vertical gasket 22 Horizontal gasket 30 Drainage material 31 Left side portion 32 Left side horizontal portion 33 Left standing portion 34 Left groove portion 35 Drain hole 36 Left turn portion 41 Intermediate portion 42 Intermediate horizontal portion 43 Intermediate standing portion 44 Intermediate groove portion 51 Right portion 52 Right horizontal portion 53 Right standing portion 54 Right groove portion 56 Right turn portion 100 Hollow portion 102 Lower end surface 103 Back surface S Extruded cement board

Claims (8)

A draining material for an extruded cement board provided on a horizontal joint when vertically extending an extruded cement board in which a plurality of hollow parts opened at upper and lower end surfaces are juxtaposed,
A strip-shaped horizontal portion disposed opposite the lower end surface of the extruded cement plate,
Standing up from the rear side of this horizontal portion, standing portion disposed to face the back of the extruded cement plate,
A groove provided along the three sides of the front side, the left side and the right side of the horizontal part;
A drainage material for an extruded molded cement board, comprising: a drainage channel that communicates with a groove portion along the front side and drains rainwater in the groove portion to the outside.   The draining material for an extrusion-molded cement board according to claim 1, wherein a folded portion is provided at each of the left and right ends so as to come into contact with a thick part on the back side of the extrusion-molded cement board.   The groove is a hanging part extending downward from the front side, the left side and the right side of the horizontal part, a bottom part extending horizontally from the lower end of the hanging part, and a standing wall part extending upward from the tip of the bottom part The drainage material for extrusion-molded cement boards according to claim 1 or 2, wherein   The draining material for an extrusion-molded cement board according to claim 3, wherein a gradient descending toward the drainage channel is formed at a bottom portion provided along the front side of the horizontal portion among the bottom portions.   Among the standing wall portions, the heights of the standing wall portions provided along the left side and the right side of the horizontal portion are arranged in the front-rear direction in close contact with the end portions at the left and right end portions of the draining material for the extruded cement board. The drainage material for an extrusion-molded cement board according to claim 3 or 4, which is set to be equal to or less than a height of a gasket to be provided. A draining material for an extruded cement board provided on a horizontal joint when vertically extending an extruded cement board in which a plurality of hollow parts opened at upper and lower end surfaces are juxtaposed,
Consists of left side, middle and right side,
The left side portion is erected from the left side horizontal portion disposed opposite to the lower end surface of the extruded cement plate, and the rear side of the left side horizontal portion, and is disposed opposite the back surface of the extruded cement plate. A left standing part, and a left groove provided along two sides of the front side and the left side of the left horizontal part,
The intermediate portion is erected from an intermediate horizontal portion disposed opposite to the lower end surface of the extruded cement board, and a rear side of the intermediate horizontal portion, and is disposed opposite to the back surface of the extruded cement board. An intermediate standing part, and an intermediate groove part provided along the front side of the intermediate horizontal part,
The right side portion is erected from the right side horizontal portion disposed opposite to the lower end surface of the extruded cement plate, and the rear side of the right side horizontal portion, and is disposed opposite the back surface of the extruded cement plate. A right standing part, and a right groove provided along two sides of the front side and the right side of the right side horizontal part,
Communicating with at least one of the left groove portion along the front side of the left horizontal portion, the intermediate groove portion along the front side of the intermediate horizontal portion, and the right groove portion along the front side of the right horizontal portion, A draining material for an extrusion-molded cement board, characterized in that a drainage channel is provided for discharging rainwater to the outside.   The drainage for an extruded cement board according to claim 6, wherein a folded portion is provided at each of the left end portion of the left portion and the right end portion of the right portion so as to come into contact with the thick portion on the back side of the extruded cement plate. Wood.   The drain joint material for extrusion-molded cement board according to any one of claims 1 to 7, wherein the horizontal joint portion is vertically stretched with an extrusion-molded cement board in which a plurality of hollow portions opened at upper and lower end surfaces are arranged side by side. A waterproof structure, wherein the draining material for the extruded cement board is disposed so as to abut against a base angle for supporting the extruded cement board.

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