JPH06322848A - Waterproof structure of vertical outer wall joint - Google Patents

Abstract

PURPOSE:To allow easy and quick construction, and attain perfect and sure waterproofness against violent wind and rain. CONSTITUTION:In the waterproof construction of a vertical outer wall joint M formed between a wall panel 4a and the adjacent wall panel 4b, a pair of thin plate throating materials 6a, 6n are adhered and fixed to the vertical header surface of the wall panel 4a and the vertical header surface of the adjacent panel 4b which are mutually opposed with a joint clearance G through butyl rubber 5a, 5b. The throating materials 6a, 6b have fitting pieces 62a, 62b formed by curling in a curved state toward the mutually opposed sides and the outdoor side in respective prescribed indoor side positions. A gasket 7 is press-fitted between the throating materials 6a, 6b from the outdoor side, and the fitting pieces 62a, 62b are nipped by nipping pieces 74b, 74b provided on the indoor side top end of the gasket 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for vertical joints on an outer wall for closing a gap between a wall material or wall panel and an adjacent wall material or wall panel for waterproofing.

[0002]

2. Description of the Related Art When a plurality of wall materials or wall panels are arranged and attached to a wall portion of a building, a gap called a vertical joint is formed between the wall material or wall panel and an adjacent wall material or wall panel. If such a gap (hereinafter, referred to as a joint gap to be distinguished from other gaps) is left as it is, rainwater may infiltrate through the joint gap and wet the room, or in the cold season, The invading rainwater freezes and expands in the minute gaps in the wall, widens the gaps, and crushes the wall material or the wall panel, so-called frost damage occurs. Therefore, many measures have been conventionally made to waterproof the joint gap, but a so-called dry waterproof structure, in which a gasket (joint material) is inserted from the outdoor side into the joint gap, cement mortar or the like is applied.
Since it is easier to install than a so-called wet waterproof structure and does not dry and crack after installation, it is widely used. As a dry waterproof structure, for example, JP-A-3-2
As described in Japanese Patent No. 60240, when assembling and constructing a unit building, a joint sheet gap generated between a wall panel and an adjacent wall panel is closed with a waterproof sheet with a fastener, and a gasket is attached from the outside. A method of inserting and waterproofing is known.

FIG. 5 shows the waterproof structure described in the above publication. In order to obtain this waterproof structure, first, the fasteners 11a and 11b whose meshing pieces are covered with rubber are attached to the waterproof sheets 1a and 1b.
It is attached to one side edge on the long side of b. Next, in the factory, the other side edge of the waterproof sheets 1a and 1b is attached to the wall panel 2.
The outermost vertical frames 21a and 21b of a and 2b are adhered to the outdoor side surfaces of the vertical frames 21a and 21b and the wall panel 2
The waterproof sheets 1a and 1b with the fasteners 11a and 11b are attached to the vertical edge surfaces of the wall panels 2a and 2b by sandwiching them with the outdoor side surface members 22a and 22b of a and 2b. Then, the wall panels 2a and 2b are erected along the side edges of the respective floor panels to produce a building unit having an adjacent relationship with each other. The produced building units are then transported to the building site and placed adjacent to the foundation. At this time, a joint gap G is formed between the wall panel 2a of one building unit and the wall panel 2b of the adjacent building unit. Therefore, first, pull out the pair of waterproof sheets 1a and 1b from the joint gap G,
The fasteners 11a and 11b are engaged with each other to join them. Next, the waterproof sheets 1a and 1b integrated by joining are again inserted into the joint gaps G, and then the gasket 3 is press-fitted into the joint gaps G from the outdoor side.

[0004]

However, the work of pulling out the waterproof sheets 1a and 1b from the joint gap G, which is an essential requirement in the waterproof system described in the above publication,
The work of engaging the fasteners 11a and 11b with each other, the work of re-inserting the waterproof sheets 1a and 1b into the joint gap G, and the like are very complicated work. In addition, the vertical edge of the wall panel is not visible from the outside of the building and does not form the aesthetic appearance of the building, so it is often left unplanned. Are solidified to form convex portions and concave portions. Therefore, small gaps are scattered between the gasket inserted in the joint gap and the vertical edge face, and in the case of heavy wind and rain, wind and rain enter through this gap to inflate the waterproof sheet. There was a fear that the fasteners would loosen and rainwater would enter. Further, as shown in FIG. 6, in the case of the wall panels 2c, 2d having a structure in which the end portions of the face materials 22c, 22d wrap around to the side surface side of the outermost vertical frames 21c, 21d, joint gaps are formed. It is practically difficult to pull out the waterproof sheet from g, and it is impossible to apply the method described in the above publication.

The present invention has been made in view of the above circumstances, and is a structure that can be simply and quickly installed and that the end portion of the outdoor side face material wraps around to the side face side of the outermost vertical frame. It is an object of the present invention to provide a waterproof structure for vertical joints on an outer wall, which can be applied between the wall panels of the above, and can completely and reliably achieve waterproofing even against severe wind and rain.

[0006]

In order to solve the above-mentioned problems, the waterproof structure of outer wall vertical joints according to claim 1 has a vertical edge face of the wall member or wall panel facing each other with the gap, and On the vertical edge surface of the adjacent wall material or wall panel, a pair of film-shaped draining materials are provided, and the pair of draining materials are on the side facing each other at a predetermined position on the indoor side and on the outdoor side. It is equipped with a mating piece formed by being bent or bent toward the side, and between these pair of drainers, a gasket having a groove extending vertically on the side surface on the indoor side is press-fitted from the outdoor side. In addition, at least the outdoor end of each of the mating pieces is inserted into the groove and is sandwiched by a pair of sandwiching pieces projecting from both edges of the groove.

In the waterproof structure for vertical joints on the outer wall according to the second aspect of the invention, the pair of sandwiching pieces project from both edges of the groove portion so as to be close to each other and toward the groove bottom. It is characterized by that.

Further, in the waterproof structure for vertical joints on the outer wall according to claim 3, a waterproof layer is provided between each of the draining members and the corresponding vertical edge face of the wall member or the wall panel. Is characterized by.

[0009]

In the structure of the present invention, each draining member is attached and fixed in advance in a factory, for example, to a vertical edge face of a wall panel. The wall panel constitutes a building unit by being erected on the side edge of the floor panel. At a construction site, a plurality of building units are arranged adjacent to each other on a foundation so that the wall panels are arranged to form vertical joints. At this time, in the joint gap, the mating pieces of the water pieces on both sides contact each other to close the joint gap. Then, the gasket is inserted into the joint gap from the outdoor side. The gasket is press-fitted into the joint gap until at least the tip of the mating piece of each draining member enters the groove. Then, the gasket is press-fitted into the joint gap, so that the elasticity of the gasket seals the gap that is scattered between the draining member and the vertical edge face of the wall panel. Also,
At least the tip of the mating piece of both draining members is housed in the groove of the gasket, and the mating piece is sandwiched by both sandwiching pieces of the groove, so that the periphery of the mating piece is also sealed. In addition, the draining material mating piece is formed by bending the film member into a bent state or a curved state, and since this peculiarity is resolved over time, both mating pieces adhere to each other over time. It becomes a state. Therefore, the periphery of the mating piece is surely sealed as the day goes by.

In the above gasket, if both sandwiching pieces of the groove portion are provided so as to face the groove bottom, the mating piece can be easily inserted into the groove portion, but cannot be easily separated from the groove portion. Also, if a waterproof layer is provided between the draining material and the corresponding vertical edge face such as a wall panel, the elasticity of the gasket will be much more effective.
preferable. An example of the installation of the waterproof layer is, for example, a case where a draining material is adhesively fixed to a vertical edge surface such as a wall panel via a waterproof adhesive material.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a horizontal sectional view showing a waterproof structure of an outer wall vertical joint which is an embodiment of the present invention, FIG. 2 is a perspective view showing a mounting state of a draining material applied to the waterproof structure, and FIG. FIG. 3 is a horizontal cross-sectional view showing the construction procedure of the waterproof structure. In FIG. 1, reference numeral M indicates an outer wall vertical joint to which the waterproof structure of this example is applied, and this outer wall vertical joint M is a wall panel of a building unit installed on a foundation or the like when assembling a unit building. 4a and the wall panel 4b of the building unit installed next to it. The building unit is configured as a box-shaped product of a predetermined size that can be carried by erected a wall panel on a side edge of a rectangular floor panel that is a floor portion of the building, and the wall panel is an upper frame. A bearing wall is constructed by attaching face materials such as gypsum board and wood chip cement board to both inner and outer sides of a wall frame assembly assembled by a lower frame and a plurality of vertical frames.

In the outer wall vertical joint M, two wall panels 4 are provided.
a and 4b are arranged side by side in a state where vertical facets are separated from each other by 10 mm to 20 mm, so that a width of 10 mm to 2 mm is obtained.
A joint gap G of 0 mm is formed. Here, the vertical edge surface of each wall panel 4a, 4b is the outermost vertical frame 41a,
The side surface of 41b and the vertical edge surfaces of the surface materials 42a, 42b on the outdoor side are roughly configured, and waterproof coatings 43a, 43b are applied to the outer surfaces of the surface materials 42a, 42b. The joint gap G is blocked and stopped by the pair of butyl rubber films 5a and 5b, the pair of drainage members 6a and 6b, and the gasket 7. The butyl rubber film 5a, 5b
Is a soft rubber that has self-adhesiveness and is highly waterproof, and is formed as a strip having a thickness of about 2 mm and a width of about 20 mm, and the facing materials 42a and 42b defining the joint gap G face each other. It is attached to the vertical edge face from the upper end to the lower end.

The draining members 6a and 6b are made of strip-shaped polypropylene film having a thickness of about 0.3 mm and a width of about 85 mm, respectively. The outdoor side edges 61a and 61b having a width of about 20 mm have butyl rubber films 5a and 5b, respectively. Is uniformly adhered and fixed to the vertical edge faces of the respective face members 42a and 42b from the upper end to the lower end, and further, at a position of a width of approximately 55 mm from the outdoor side edge, on the side facing each other and It is formed by being bent toward the outdoor side, and as a result, it is provided with mating pieces 62a, 62b having a width of about 30 mm which are arranged in contact with each other. Here, the bent portions of the drainage members 6a and 6b are curved in a V-shape or U-shape in cross section, and in the event that rainwater enters the inside, it is provided to prevent the rainwater from proceeding further. Drainers 63a and 63b are provided.

As the material of the drainage members 6a and 6b,
The reason why the polypropylene film is used is that polypropylene has the property of attempting to release the habit forcedly attached to itself over time, in addition to having excellent weather resistance and hinge properties. . Due to the action of the polypropylene film for releasing the habit over time, the two mating pieces 62a, 62b strengthen each other over time, and as a result, both mating pieces stabilize in a close contact state over time.

The gasket 7 is obtained by extrusion molding a synthetic rubber molding material such as EPDM (ethylene-propylene-diene-terpolymer) and is obtained as a vertical joint material having excellent weather resistance, elasticity and waterproofness. This gasket 7 is
A surface portion 7 that is wider than the joint gap G and covers the vertical joint M.
1, a base 72 that is vertically projected from the center of the back surface of the front surface 71 and is inserted into the joint gap G, and a plurality of fins 73, 73, ... It includes a sandwiching portion 74 provided at the tip of the base portion 72. The fins 73, 73, ... Are pressed into the joint gap G along with the base 72, and the outdoor side edges 61a, 61b of the drainers 6a, 6b and the butyl rubber films 5a, 5b are attached to the face material 4.
It acts to press against the vertical edge face of 2a, 42b. By this action, the vertical edge surfaces of the face materials 42a, 42b and the butyl rubber films 5a, 5b, the butyl rubber films 5a, 5b and the water drainers 6a, 6b on the outdoor side edges 61a, 61b, and the water drainers 6a, 6b on the outdoor side. The side edge portions 61a, 61b and the fin portions 73, 73, ... Are brought into close contact with each other, and water is stopped between them.

Further, the sandwiching portion 74 has a deep groove portion 74a extending vertically on the indoor side surface, and protrudes from both upper edges of the groove portion 74a in a direction toward each other and toward a groove bottom. A slit 74c having a predetermined width is formed by the pair of holding pieces 74b, 74b. This slit 7
4c, via the mating piece 62 of the draining material 6a, 6b
The tip end portions of a and 62b are inserted into the groove portion 74a and sandwiched by the pair of sandwiching pieces 74b and 74b. Therefore, the mating pieces 62a and 62b can maintain the close contact state even when the time-dependent tendency releasing force of the polypropylene film ceases to act. The sandwiching pieces 74b and 74b are provided so as to face the groove bottom because the mating pieces 62a and 62b are formed in the groove portion 7.
This is for facilitating the insertion into the groove 4a and making it difficult to separate from the groove 74a.

Next, the procedure for constructing the waterproof structure of this example will be described. First, in a factory, a plurality of wall panels 4a (4b), ... Are erected on the side edges of the floor panel to form a required number of substantially box-shaped building units, and then, as shown in FIG. 2, become outer walls. Butyl rubber 5a (5b) is self-adhesively attached to the vertical small surface on the outdoor side of the wall panel 4a (4b), and the outdoor side edge of the draining material 6a (6b) is further attached to the surface of the butyl rubber 5a (5b). By pressing the portion 61a (61b), the draining material 6 is applied to the vertical edge face of the wall panel 4a (4b).
Attach a (6b). If the storage period of the wall panel 4a (4b) is long after the draining member 6a (6b) is attached,
There is a fear that the bent state (propensity) of the draining material 6a (6b) is gradually released. Therefore, for example, with the help of a temporary film, the tip of the mating piece 62a (62b) is connected to the outdoor side edge 61a (61b) to maintain the bent state of the draining member 6a (6b). To do so.

The building unit is transported to a construction site, and after the temporary adhesion film is removed, it is installed on a foundation to form a unit building. At this time, a joint gap G is formed between the adjacent building units as shown in FIG. 3, and both drainers 6 are formed in the formed joint gap G.
The mating pieces 62a and 62b of a and 6b are in a state of being brought into close contact with each other with their tip ends facing the outdoor side. Therefore, as shown in the figure, the gasket 7 is inserted into the joint gap G from the outside, and the slit 74c is formed in the groove 74a.
Via the draining members 6a, 6b
Press in so that b enters. Then, when the surface portion 71 of the gasket 7 hits both edges of the joint gap G, the press-fitting operation is stopped.

Thus, according to the waterproof structure of this example,
At the construction site, waterproofing work is completed only by inserting the gasket 7, so that the work is very simple and quick. Further, as shown in FIG. 4, the invention can be applied to a joint gap g between the wall panels 4c and 4d having a structure in which the end portions of the face members 42c and 42d wrap around to the side surfaces of the vertical frames 41c and 41d. Also, the wall panels 4a, 4b (face materials 42a, 42b)
Butyl rubber film 5a,
5b and the vertical edge face, or even when non-adhesive areas such as floats and gaps are scattered between the draining members 6a, 6b and the butyl rubber films 5a, 5b, the draining members 6a, 6b and the butyl rubber films 5a, 5b. However, since it is pressed by the elastic force of the fins 73, 73, ... Of the gasket 7 inserted from the outdoor side, the non-adhesion region also shifts to the adhesion region, and the floating and the gap are completely closed.

Also, a mating piece 6 of both drainers 6a and 6b
In addition to the above-mentioned adhesive transferability with time which 2a and 62b have, both mating pieces 62a and 62a in the groove 74a of the gasket 7
At least the tip portion of 62b is accommodated and the groove portion 74a
The sandwiching pieces 62a, 62 by the two sandwiching pieces 74b, 74b of
Since b is sandwiched, the periphery of the mating piece is also reliably sealed. Further, since the gasket 7 has a defect, even if a gap is created between the gasket 7 and the drainage members 6a, 6b, the drainage portions 63a, 63b folded back to the outdoor side are provided.
Prevents the entry of rainwater from that part forward. Therefore, as a whole, waterproofing can be achieved completely and surely.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific structure is not limited to this embodiment, and there are design changes and the like within the scope not departing from the gist of the present invention. Also included in the present invention. For example, the molding material of the gasket 7 is not limited to EPDM, and other synthetic rubber or natural rubber may be used, or soft synthetic resin such as soft urethane resin, soft vinyl chloride resin or acrylic acid resin may be used. good. An acrylic adhesive member may be used instead of the butyl rubber films 5a and 5b. Further, the formation of the polypropylene film when forming the drainage members 6a and 6b may be either thermal or mechanical. When the joint gap G is relatively wide, the butyl rubber film 5 is formed after the outer wall vertical joint M is formed.
It is also possible to attach and fix a, 5b, drainers 6a, 6b, and the like.

[0022]

As described above, according to the waterproof structure for outer wall vertical joints of the present invention, a pair of draining members (waterproof sheets), which are required in the conventional waterproof structure, are pulled out from the joint gap. After joining these draining materials with fasteners, the complicated work of inserting the draining materials into the joint gaps again is not necessary, and the unevenness of the vertical small surface such as the wall panel causes It is alleviated by sticking, and as a result, the gasket can be smoothly inserted into the joint gap, so that waterproofing can be easily and quickly performed. In addition, the draining material can be easily attached to the joint gap (FIG. 6) between the wall panels having a structure in which the end of the outdoor surface material wraps around to the side surface of the vertical frame, and also reliably seals. You can also In addition, since there is a defect in a part of the gasket, even if a gap should occur between the gasket and the draining material, after the draining material is folded back,
Since the mating piece is housed in the groove portion of the gasket, the rainwater is prevented from entering from that portion ahead. In this case, during severe weather, a large wind pressure acts on the folded-back portion of the draining member to try to inflate the folded-back portion. As a result, the mating pieces press each other, so that the gap between them is closed more tightly. Therefore, the waterproofing can be achieved completely and surely in the severe wind and rain.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view showing a waterproof structure of vertical joints on an outer wall according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a mounting state of a draining member applied to the waterproof structure.

FIG. 3 is a horizontal sectional view showing a construction procedure of the waterproof structure.

FIG. 4 is a horizontal sectional view showing a modified example of the waterproof structure.

FIG. 5 is a horizontal sectional view showing a conventional waterproof structure for vertical joints on an outer wall.

FIG. 6 is a horizontal cross-sectional view showing a modified example of the outer wall vertical joint.

[Explanation of symbols]

 M outer wall vertical joint G, g joint gap (gap) 4a wall panel (wall material or wall panel) 4b adjacent wall panel (adjacent wall material or wall panel) 5a, 5b butyl rubber film (waterproof layer) 6a, 6b draining material 62a, 62b mating piece 7 gasket 74a groove 74b sandwiching piece

Claims (3)

[Claims] 1. A waterproof structure of a vertical joint of an outer wall for waterproofing by closing a gap between a wall material or a wall panel and an adjacent wall material or a wall panel, wherein the wall faces each other with the gap therebetween. A pair of film-shaped draining members are provided on the vertical edge surface of the material or wall panel and on the vertical edge surface of the adjacent wall material or wall panel, and these pair of draining materials are located at predetermined positions on the indoor side. At the side facing each other and toward the outdoor side with a mating piece formed by being bent or bent. A gasket having an extending groove portion is press-fitted from the outdoor side, and at least the outdoor end portions of the both mating pieces are inserted into the groove portion and are sandwiched by a pair of sandwiching pieces projecting from both edges of the groove portion. That A waterproof structure with vertical joints on the outer wall. 2. The outer wall vertical joint according to claim 1, wherein the pair of sandwiching pieces are provided so as to be proximate to each other from both edges of the groove portion and face toward the groove bottom. Waterproof structure 3. The outer wall length according to claim 1, wherein a waterproof layer is provided between each of the draining members and a corresponding vertical edge face of the wall member or the wall panel. Joint waterproof structure.