JP5137091B2 - A secondary waterproof member for an outer wall joint, a double waterproof structure for an outer wall joint, and a double waterproof structure construction method for an outer wall joint. - Google Patents

Description

  The present invention provides a secondary waterproof member for an outer wall joint that inhibits water from entering from the vertical joint between the outer wall panels into the indoor side, a double waterproof structure for the outer wall joint using the secondary waterproof member for the outer wall joint, and The present invention relates to a construction method of the double waterproof structure of the outer wall joint.

  Conventionally, dry outer wall joint gaskets are used to prevent wind and rain from entering the building from joints formed between a plurality of adjacent outer wall panels and to maintain a good appearance of the building. The outer wall joint gasket is formed of a material having watertightness and elasticity such as polyvinyl chloride, and has a longitudinal shape wider than the joint width. The outer wall joint gasket is fixed by being pressed into the joint from the outdoor side.

  In such an outer wall joint gasket, in order to further improve the waterproof property, for example, as shown in FIG. 12 (A), a base joint formed by standing an opposing vertical plate on the bottom plate portion to form a fitting groove. The material 101 and the ridge 103 inserted into the fitting groove 106 of the base joint material 101 are suspended from the cylindrical hollow seal portion 104, and a silicon-based coating layer is formed on the seal surface of the seal portion 104, And the outer wall joint gasket 100 which consists of the top joint material 102 formed by thickening the lower end part of the seal part 104 according to joint joint width is proposed (refer patent document 1).

  With this configuration, the outer wall joint gasket 100 has the base joint member 101 in contact with the back surface 105a of the outer wall panel 105 in addition to the primary waterproofing due to the waterproofness of the seal portion 104, as shown in FIG. By closely contacting, secondary waterproofing can be performed, and the waterproofing effect can be further enhanced.

JP 2003-74130 A

  However, in the outer wall joint gasket 100 as described above, since the width of the base joint material 101 is wider than the joint width of the outer wall joint, it is difficult to insert the base joint member 101 from the outer wall joint to the indoor side. It is necessary to attach the base joint material 101 from the indoor side of the building. Therefore, it is often difficult to attach the base joint material 101 because the base material, the outer wall panel mounting bracket, and the like disposed on the indoor side of the outer wall panel 105 become an obstacle, and when the outer wall is reformed. Since the interior material is fixed as described above, it is necessary to remove the outer wall panel 105 in order to attach the base joint material 101.

  In addition, since the base joint material 101 and the base material of the outer wall, the outer wall panel mounting bracket, and the like share a narrow space, the base joint material 101 may be installed depending on the thickness of the space on the indoor side of the outer wall panel 105. In some cases, it was not possible.

  Therefore, the present invention can be inserted into and removed from the outside of the outer wall joint from the outdoor side, can suppress interference with the base material and the outer wall panel mounting bracket, and is easy to maintain the secondary of the outer wall joint. It aims at providing the waterproof member, the double waterproof structure of the outer wall joint using the secondary waterproof member of this outer wall joint, and its construction method.

  The secondary waterproof member of the outer wall joint according to claim 1 is housed on the indoor side of the vertical joint between the outer wall panels, and the secondary waterproofing of the outer wall joint prevents water from entering the indoor side from the vertical joint. A waterproof sheet body that is flexible and formed in a long strip shape, and a long member that is formed on each side of the sheet body along the sheet body. And a curved member having a waterproof property that is harder than the sheet body whose width direction is curved so that it is curved toward the indoor side when stored on the indoor side of the vertical joint.

  The secondary waterproof member of the outer wall joint according to claim 2 further includes an elastic water return portion that is formed along a side edge of the curved member opposite to the sheet body and protrudes toward the outer wall panel. It is characterized by that.

  The secondary waterproof member of the outer wall joint according to claim 3 is characterized in that the sheet body can transmit at least visible light.

  Here, “visible light can be transmitted” is not limited to the material that can transmit 100% of visible light, but is transparent or semi-transparent to the extent that a member installed on the back side of the sheet body can be visually recognized. If it is.

  The secondary waterproof member of the outer wall joint according to claim 4 is characterized in that the sheet body is wider than the joint width of the vertical joint.

  The double waterproof structure of the outer wall joint according to claim 5 is formed by an elastic body formed wider than the vertical joint between the outer wall panels, and is a primary waterproof member that is press-fitted and held in the vertical joint. A double waterproof structure of an outer wall joint comprising a secondary waterproof member wider than the joint width of the vertical joint formed on the indoor side of the vertical joint, wherein the secondary waterproof member has flexibility A long sheet-shaped waterproof sheet body and long members formed along the sheet body on both sides of the sheet body, and housed on the indoor side of the vertical joint And a curved member harder than the sheet body whose width direction is curved so as to be curved indoors.

  The double waterproof structure of the outer wall joint according to claim 6, wherein the secondary waterproof member is formed along a side edge of the curved member opposite to the sheet body, and is an elastic water projecting toward the outer wall panel. And a return portion.

  The double waterproof structure construction method for an outer wall joint according to claim 7 is more flexible than the sheet body having a curved width direction on both sides of a waterproof sheet body formed in a long band shape. After forming a rigid curved member and inserting a secondary waterproof member wider than the vertical joint between the outer wall panels into the vertical joint from the outdoor side in a state where the sheet body is bent, The sheet body is spread on the indoor side, the vertical joint is arranged so as to be covered with the secondary waterproof member from the indoor side, and then a primary waterproof member made of an elastic body formed wider than the vertical joint. Is press-fitted between the vertical joints from the outdoor side.

  According to the secondary waterproof member of the outer wall joint described in claim 1, the curved members are formed on both sides of the flexible belt-like sheet member. Therefore, by bending the sheet body and bringing the curved members on both sides close to each other, the secondary waterproof member can be easily inserted into the vertical joint of the outer wall, and the sheet body can be expanded on the indoor side of the outer wall panel. The vertical waterproof joint of the outer wall can be covered from the indoor side by the secondary waterproof member. Therefore, the secondary waterproof member having a width wider than the joint width can be installed very easily in the back of the outer wall joint, and the secondary waterproof performance can be enhanced.

  And since the secondary waterproofing member is equipped with the curved member harder than the said sheet | seat body in which the width direction curved so that it might curve to the indoor side when accommodated in the indoor side of a vertical joint, from the joint width Can be formed with a considerably wider width, and the size of the overlap with the back surface of the outer wall panel can be made large, so that water entering from the vertical joint can be more reliably prevented from entering the indoor side, and the back surface of the outer wall panel A relatively large secondary waterproof space can be provided between the secondary waterproof member and, for example, the secondary waterproof space can be easily designed to receive water that has entered from a horizontal joint on the outer wall.

  Further, according to the secondary waterproof member, since the flexible sheet body is installed at the position where the base material and the outer wall panel mounting bracket are installed, the secondary waterproofing can be performed by flexibly deforming the sheet body. Interference between the member and the base material or the outer wall panel mounting bracket can be suppressed. Furthermore, when the secondary waterproof member is inserted, the distal ends of the bending members can be pulled toward each other to be deformed into a shape that can be more easily inserted. By pushing in from the outdoor side, the sheet body spreads, and the tip of the bending member can be brought into contact with the indoor side of the outer wall panel.

  According to the secondary waterproof member of the outer wall joint according to claim 2, since the water return portion of the elastic body is formed along the side edge of the curved member opposite to the sheet body, Even if water enters, the water return portion can be reliably waterproofed. In addition, since the water return portion is made of an elastic body, there is no hindrance when inserting the secondary waterproof member into the vertical joint between the outer wall panels, and when removing it for maintenance or the like. It can be deformed for easy removal. Further, when inserting the secondary waterproof member, the side edge of the bending member on the sheet body side is moved away from each other, and the water return portions are brought close to each other and drawn to make it easier to insert. .

  According to the secondary waterproof member of the outer wall joint according to claim 3, the sheet body provided in a band shape at the center in the width direction of the secondary waterproof member can transmit visible light. Even after the waterproof member is installed, the outer wall panel mounting bracket can be visually confirmed, and the mounting position of the protrusion member for preventing the primary waterproof member from coming off after the secondary waterproof member is attached to the outer wall panel mounting bracket. It can be adjusted so that it does not become.

  According to the secondary waterproof member of the outer wall joint according to claim 4, since the sheet body is wider than the joint width of the vertical joint, the outer wall panel mounting bracket can be visually recognized more easily, and the secondary waterproof member is provided. Interference between the member and the base material or the outer wall panel mounting bracket can be more reliably suppressed.

  According to the double waterproof structure of the outer wall joint according to claim 5, from the sheet body whose width direction is curved so that the secondary waterproof member is curved indoors when stored in the indoor side of the vertical joint. Since it also has a hard curved member, it can be formed to be considerably wider than the joint width, and the overlapping dimension with the back of the outer wall panel can be made larger, preventing water from entering from the vertical joint more reliably. In addition, a relatively large secondary waterproof space can be provided between the back surface of the outer wall panel and the secondary waterproof member. For example, water entering from the horizontal joints of the outer wall is received by the secondary waterproof space. Can be designed easily. Also, since the flexible sheet body is installed at the position where the base material and the outer wall panel mounting bracket are installed, the secondary waterproof member, the base material, and the outer wall panel can be obtained by flexibly deforming the sheet body. Interference with the mounting bracket can be suppressed.

  According to the double waterproof structure of the outer wall joint according to claim 6, since the water return portion of the elastic body is formed along the side edge of the bending member opposite to the sheet body, Even if water enters, the water return portion can be reliably waterproofed. In addition, since the water return portion is made of an elastic body, there is no hindrance when inserting the secondary waterproof member into the vertical joint between the outer wall panels, and when removing it for maintenance or the like. It can be deformed for easy removal.

  According to the double waterproof structure construction method of the outer wall joint according to claim 7, after inserting the secondary waterproof member into the vertical joint between the outer wall panels from the outdoor side with the sheet body bent, The sheet body is expanded indoors, and the vertical joint is arranged so as to be covered with the secondary waterproof member from the indoor side. Next, the primary waterproof member made of an elastic body formed wider than the vertical joint is provided on the outdoor side. Since a secondary waterproofing member that is wider than the joint width can be easily inserted from the outdoor side to the back of the joint, it is extremely easy to construct a double waterproof structure for the outer wall joint. Can do.

The horizontal sectional view of the outer wall vertical joint explaining the whole structure of a double waterproof structure. FIG. 3 is a partially omitted perspective view illustrating the external configuration of the primary waterproof member. The partially-omission perspective view explaining the external appearance structure of a secondary waterproofing member. Sectional drawing explaining the cross-sectional shape of a secondary waterproofing member. FIG. 5 is a partially omitted cross-sectional view illustrating a process of fixing the outer wall panel to the shaft assembly using the outer wall panel mounting bracket. The partially abbreviate | omitted sectional drawing explaining the process of inserting the curved member of a secondary waterproof member in the vertical joint of an outer wall. Partially omitted cross-sectional view illustrating a state in which the distal end of the bending member is inserted into the indoor side of the vertical joint in the step of inserting the secondary waterproof member into the vertical joint of the outer wall, and the bending members spread in directions away from each other . The partial omission sectional view which shows the state which covered the vertical joint of the outer wall with the secondary waterproofing member from the indoor side. FIG. 4 is a partially omitted cross-sectional view showing a state in which a primary waterproofing member is press-fitted into a vertical joint of an outer wall, and showing a cross section at a height at which an outer wall mounting bracket is installed. (A) is a partially omitted cross-sectional view showing a state in which a primary waterproofing member is press-fitted into a vertical joint of an outer wall, and is a diagram showing a cross-section at a height where a detachment preventing member is installed, (B) The enlarged view of the part enclosed with the dashed-two dotted line of (A). The figure explaining the operation | work which removes a secondary waterproofing member from the vertical joint of an outer wall. The figure which shows an example of the outer wall joint gasket used for the conventional vertical joint waterproofing.

  Hereinafter, the best embodiment of the secondary waterproof member 1 of the outer wall joint, the double waterproof structure 2 of the outer wall joint, and the double waterproof structure construction method of the outer wall joint will be described with reference to the drawings. As shown in FIG. 1, the outer wall in which the secondary waterproofing member 1 for the outer wall joint and the double waterproof structure 2 for the outer wall joint are used, the outer wall panel is attached to the shaft assembly 4 constituting the structural frame of the building. It is fixed by using the metal fitting 5. The outer wall panel 3 is, for example, a resin-based, cement-based, ceramic-based, or metal-based siding material formed in a rectangular flat plate shape. A metal frame 31 having a C-shaped cross section is attached to the indoor side of the periphery of the outer wall panel 3 so as to open in the joint direction in order to fix the outer wall panel 3 to a beam or a column of a building.

  The outer wall panel mounting bracket 5 for fixing the outer wall panel 3 to the shaft assembly 4 is fixed to the shaft assembly 4, and is fixed to the base assembly 51 so as to be rotatable from the shaft assembly 4 to the outdoor direction. And a panel fixing portion 52 that holds the metal frame 31 of the outer wall panel 3 between the shaft assembly 4 and an operation portion 53 that rotates the panel fixing portion 52. When fixing the outer wall panel 3, the metal frame 31 of the outer wall panel 3 is pressed against the shaft assembly 4, and the operation unit 53 of the outer wall panel mounting bracket 5 is operated to rotate the panel fixing unit 52 to fix the panel. The metal frame 31 of the outer wall panel 3 is sandwiched and fixed between the portion 52 and the shaft assembly 4. At this time, the operation unit 53 is configured to be located in the back of the vertical joint between the outer wall panels 3. Therefore, by operating while inserting a tool such as a screwdriver into the joint from the outdoor side, the outer wall panel 3 can be attached from the outdoor side, and the outer wall panel 3 can be removed from the outdoor side during renovation and the like. Can do.

  The double waterproof structure 2 of the outer wall joint is arranged in such a vertical joint between the outer wall panels 3, and rainwater or the like enters the indoor side of the building through the vertical joint between the outer wall panels 3. This is to prevent this. As shown in FIG. 1, the double waterproof structure 2 of the outer wall joint includes a primary waterproof member 6 that is press-fitted into the vertical joint between the outer wall panels 3, and a secondary waterproof member 1 that is disposed on the indoor side of the vertical joint. It consists of.

  As shown in FIGS. 1 and 2, the primary waterproofing member 6 includes a main body 61 that is water-tightly press-fitted into the vertical joint, and a plurality of detachment preventing members 62 that prevent the main body 61 from falling off the vertical joint. Become. The main body 61 is formed of a material having watertightness and elasticity such as polyvinyl chloride, and is formed in a longitudinal shape wider than the joint width. A plurality of spaces are formed inside the main body 61, and when the main body 61 is press-fitted into the vertical joint, the main body 61 can be elastically deformed to seal the vertical joint. Further, a ridge 61a having a bulging tip is formed at a portion that becomes the indoor side when press-fitted into the vertical joint. The detachment preventing member 62 is an elastic body fixed to the ridges 61a of the main body 61 at regular intervals. The detachment prevention member 62 includes a locking portion 62a that is wider than the joint width and hooks on the indoor side surface of the outer wall panel 3, and It is comprised from the fitting part 62b to fit, and the connection part 62c which connects the latching | locking part 62a and the fitting part 62b. As shown in FIG. 10 (B), such a primary waterproofing member 6 is press-fitted into the vertical joint with the detachment preventing member 62 fixed to the ridges 61a of the main body 61 at a predetermined interval. Fixed to.

  As shown in FIGS. 1, 3, and 4, the secondary waterproof member 1 of the outer wall joint is a waterproof member that is housed on the indoor side of the vertical joint. The secondary waterproof member 1 on the outer wall joint is formed on a flexible resin sheet body 11 formed in a strip shape and on both sides of the sheet body 11 and is placed indoors when stored on the indoor side of the vertical joint. The bending member 12 is bent so as to be bent, and a water return fin 13 is formed on a side edge of the bending member 12. The sheet body 11 is formed of a transparent soft resin such as polypropylene, acrylic resin, polycarbonate, and the like, and has flexibility and waterproofness. The sheet body 11 has a length substantially equal to the height of the outer wall panel 3, for example, is formed in a strip shape having a width of about 10 mm to 20 mm, and is substantially equal to the joint width of the vertical joint or wider than the joint width. Is formed.

  The bending member 12 is formed in a substantially arc shape that curves toward the indoor side, for example, having a radius of about 25 mm to 30 mm and a central angle of about 60 degrees to 65 degrees, and is formed of a resin harder than the sheet body 11. Has been. The bending member 12 has a width of about 20 mm, for example, and a depth of about 4.2 mm when inserted into the indoor side of the outer wall panel 3. The bending member 12 is formed of an elastic material such as a thermoplastic resin such as hard polypropylene or hard polyvinyl chloride, or a thin steel plate. Further, the water flip fin 13 is formed on the side edge of the bending member 12 opposite to the sheet body 11 and has elasticity. This water flip fin 13 is formed of a soft material such as a thermoplastic resin such as soft polypropylene or soft polyvinyl chloride, or a rubber material.

  When constructing the secondary waterproof member 1 of the outer wall joint and the double waterproof structure 2 of the outer wall joint configured as described above, the outer wall panel 3 is first attached to the building framework 4 as shown in FIG. Fix it. Specifically, the outer wall panel mounting bracket 5 is attached to the shaft assembly 4, and the indoor side surface of the metal frame 31 of the outer wall panel 3 is brought into contact with the shaft assembly 4. Then, the panel fixing portion 52 is rotated by operating the operation portion 53 of the outer wall panel mounting bracket 5, and the panel fixing portion 52 is brought into contact with the outdoor side surface of the metal frame 31. And the metal frame 31 is clamped and fixed.

  Next, as shown in FIG. 6, the sheet body 11 of the secondary waterproofing member 1 on the outer wall joint is bent, and the swollen sides of the curved members 12 on both sides are brought close to each other and inserted into the vertical joint. At this time, the water return fin 13 is elastically deformed in accordance with the shape of the vertical joint. Then, as shown in FIG. 7, when the leading end of the bending member 12 is fully inserted into the indoor side of the vertical joint, the sheet body 11 is inserted into the vertical joint while the leading end of the bending member 12 is widened away from each other. Then, the sheet body 11 is further inserted into the indoor side of the vertical joint, and as shown in FIG. 8, the sheet body 11 is expanded and disposed so that the vertical joint is covered with the secondary waterproofing member 1 from the indoor side. Since the secondary waterproof member has a large overlap width with the indoor side of the outer wall panel 3, it is possible to sufficiently suppress the water that has entered from the joint from entering the indoor side. Since the water return fins abut against the outdoor side piece of the metal frame 31 of the outer wall panel 3 as regulated by the mounting bracket 5, the gap between the water return fins and the outer wall panel can be made as small as possible, and water Can be prevented from entering the indoor side. Further, since the width of the transparent sheet 11 is formed to be approximately equal to the width of the vertical joint or about several millimeters wide, the vertical joint is covered with the secondary waterproofing member 1 from the indoor side and from the outdoor side. The outer wall panel mounting bracket 5 can be visually recognized.

  Then, the ridge 61 a of the main body 61 is fitted into the fitting portion 62 b of the detachment preventing member 62 of the primary waterproof member 6. At this time, it arrange | positions so that the position of the removal prevention member 62 may shift | deviate from the position of the outer wall panel attachment metal fitting 5. As shown in FIG. Then, as shown in FIGS. 9 and 10, the primary waterproof member 6 is press-fitted into the vertical joint so that the disengagement preventing member 62 is inserted to the depth of the vertical joint. As shown in FIG. 9, the anti-detachment member 62 is not disposed at the height position where the outer wall panel mounting bracket 5 is installed, and the anti-detachment is prevented as shown in FIGS. Since the outer wall panel mounting bracket 5 is not installed at the height position at which the member 62 is disposed, it is possible to prevent the primary waterproofing member 6 from being inserted into the vertical joint well due to interference between the members. can do.

  As described above, the secondary waterproof member 1 is easily inserted into the vertical joint of the outer wall that is narrower than the secondary waterproof member 1 by bending the sheet body 11 and bringing the curved members 12 on both sides close to each other. It is possible to cover the vertical joint of the outer wall from the indoor side with the secondary waterproofing member 1 by spreading the sheet body 11 on the indoor side of the outer wall panel 3. Therefore, the secondary waterproof member 1 having a width wider than the joint width can be very easily installed in the back of the outer wall joint, and the secondary waterproof performance can be enhanced.

  In addition, since the bending member 12 is formed so as to be considerably wider than the joint width, it is possible to increase the overlap dimension with the back surface of the outer wall panel 3, and more reliably prevent water from entering from the vertical joint, A relatively large secondary waterproof space can be provided between the back surface of the outer wall panel 3 and the secondary waterproof member 1. For example, the secondary waterproof space can be easily designed to receive water entering from the horizontal joints of the outer wall. can do.

  When removing the double waterproof structure 2 of the outer wall joint, first, the primary joint member 6 is hooked with a tool 7 such as a screwdriver and pulled out to the outdoor side. Then, as shown in FIG. 11, a tool 7 having a slightly sharp tip such as a screwdriver is hooked on the vertical end of the sheet body 11 of the secondary waterproof member 1 and pulled out to the outdoor side. By pulling out the flexible sheet body 11 in this way, the curved members 12 formed on both sides of the sheet body 11 are also close to each other and pulled out from the vertical joints of the outer wall. Therefore, the maintenance work can be facilitated because the secondary waterproofing member 1 can be removed without substantially destroying the outer wall panel during maintenance.

  Needless to say, the embodiment of the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the scope of the idea of the present invention.

  By using the secondary waterproofing member 1 of the outer wall joint, the double waterproof structure 2 of the outer wall joint, and the double waterproof structure construction method of the outer wall joint according to the present invention, the outer wall that can more reliably waterproof the vertical joint of the outer wall. It can be suitably used as a secondary waterproofing member 1 for joints, a double waterproof structure 2 for outer wall joints, and a double waterproof structure construction method for outer wall joints.

DESCRIPTION OF SYMBOLS 1 Secondary waterproof member 2 Double waterproof structure 3 Outer wall panel 6 Primary waterproof member 11 Sheet body 12 Bending member 13 Water return fin (water return part)

Claims (7)

A secondary waterproofing member for the outer wall joint that is housed on the indoor side of the vertical joint between the outer wall panels and prevents water from entering the indoor side from the vertical joint,
A waterproof sheet body that has flexibility and is formed into a long strip;
It is a long member formed along the sheet body on both sides of the sheet body, and the width direction of the member is curved so as to be curved indoors when stored on the indoor side of the vertical joint. A secondary waterproofing member for an outer wall joint, comprising: a curved member having a waterproof property that is harder than a sheet body.   2. The outer wall joint according to claim 1, further comprising an elastic body water return portion that is formed along a side edge of the bending member opposite to the sheet body and protrudes toward the outer wall panel. Next waterproofing member.   The secondary waterproofing member for an outer wall joint according to claim 1 or 2, wherein the sheet body is capable of transmitting at least visible light.   The secondary waterproof member for an outer wall joint according to any one of claims 1 to 3, wherein the sheet body is wider than the joint width of the vertical joint. A primary waterproof member formed by an elastic body formed wider than the vertical joint between the outer wall panels, and press-fitted and held in the vertical joint;
A double waterproof structure of an outer wall joint comprising a secondary waterproof member wider than the joint width of the vertical joint formed on the indoor side of the vertical joint,
The secondary waterproofing member is flexible and has a waterproof sheet body formed in a long band shape;
It is a long member formed along the sheet body on both sides of the sheet body, and the width direction of the member is curved so as to be curved indoors when stored on the indoor side of the vertical joint. A curved member harder than the sheet body;
The double waterproof structure of the outer wall joint characterized by comprising.   The said secondary waterproof member is further formed with the water return part of the elastic body which is formed along the side edge on the opposite side to the said sheet | seat body of the said bending member, and protrudes in the outer wall panel side. The double waterproof structure of the outer wall joint according to 5. More than the vertical joint between the outer wall panels forming a flexible curved member on both sides of the waterproof sheet body that is flexible and formed in the shape of a long band and that is harder than the sheet body curved in the width direction After inserting the wide secondary waterproof member into the vertical joint from the outdoor side with the sheet body bent,
Spread the sheet body on the indoor side of the vertical joint, and arrange the vertical joint so as to be covered with the secondary waterproofing member from the indoor side,
Next, a double waterproof structure construction method for outer wall joints, wherein a primary waterproof member made of an elastic body formed wider than the vertical joints is press-fitted between the vertical joints from the outdoor side.

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