JPH11324148A - Joint structure for external wall panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint structure for an external wall panel which secures the watertight performance by adopting a double sealing structure of a dry sealing material of hygroscopic swelling and a wet sealing material, reduces the cost by reducing the number of parts of sealing materials, and improves the watertight performance by reducing the number of joints. SOLUTION: ALC(aerated lightweight concrete) panels 1 to be an external wall panel of a building are arranged adjacent to each other and a cutout part 1a for providing a hygroscopic swelling dry sealing material 5 and a wet sealing material 6 is formed along a longitudinal joint part 3 to be the vertical joint in the front side (the outside of the building) of the ALC panel 1. The hygroscopic swelling dry sealing materials 4, 5 are installed along the inside of the lateral joint part 2 and the longitudinal joint part 3 of the adjoining ALC panel 1, and the wet sealing material 6 is filled along the front side of the respective joint parts 2, 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint structure of an outer wall panel, and particularly to a case where a sealing material is provided at joints between ALC (lightweight cellular concrete) panels and joints between a door and a window sash to be constructed on site. The present invention relates to a joint structure of an outer wall panel which is suitable for the above.

[0002]

2. Description of the Related Art As shown in FIG. 10, a conventional joint structure of an outer wall panel is disposed vertically and horizontally next to each other, and a waterproof structure is provided inside an joint portion (inside a building) of an ALC panel 51 constituting an outer wall. After attaching the round or square sealing back-up materials 52 and 53 without function, apply a sealing primer to the small joint surface of the ALC panel 51 with a brush 54 or the like, and then apply an acrylic, urethane, A material filled with a general-purpose wet seal material 55 such as a modified silicon-based material is generally used.

[0003]

However, in the above-described conventional example, since the watertightness of the joints is secured only by the wet seal material 55, the wet seal material 55 is deteriorated due to poor construction and deterioration of the wet seal material 55 over time. If the watertightness of the building is lost, water leaks immediately, and there is a possibility that large-scale damage to the inside of the building may occur.

In addition, since the joint width between the ALC panels 51 is small and the water absorption of the ALC panels 51 itself is high, it takes time to apply the primer and fill the wet sealing material 55. There is a problem that the defective portion is difficult to see.

To prevent this, a dry sealing material such as a rubber material is arranged along the inside of the joint, and a wet seal material 55 is arranged along the surface of the joint. Dry seal materials such as rubber materials cannot be used to secure the required watertightness unless the compression ratio is increased.
After fixing the dry seal material to the joint surface of the panel 51, the adjacent ALC panels 51 are pressed against each other to compress the dry seal material at the joints, and the ALC panel 51 is installed to compress the dry seal material. It is difficult to apply the dry sealing material after the ALC panel 51 is attached, so the method and order of applying the ALC panel 51 are restricted, and the installation work takes time and maintenance. There has been a problem that it is sometimes difficult to replace the dry seal material.

Further, the intersection of the vertical and horizontal joints in FIG. 10 uses a specially shaped dry sealing material such as a cross shape, so that the number of types of the dry sealing material increases and the cost of parts increases. Since a large number of joints between the dry seal material at the joint and the joint straight portion are generated, the construction is complicated, and there is a problem that a defect in watertight performance tends to occur.

[0007] The present invention is to solve the above-mentioned problems,
The purpose is to secure water tightness as a double seal structure with a water-swellable dry seal material and a wet seal material, and to install a water-swellable dry seal material and a wet seal material after mounting the outer wall panel. It is possible to perform the work of the outer wall panel easily, and it is necessary to use a special shape dry seal material at the joint intersection because the water absorbing and swelling dry seal material can be overlapped at the joint intersection and crossed continuously. An object of the present invention is to provide a joint structure of an outer wall panel that can reduce costs by reducing the number of parts of a sealing material, reduce the number of seams, and improve watertightness.

[0008]

According to the present invention, there is provided a joint structure for an outer wall panel according to the present invention, wherein a water-swellable dry-type sealing material is provided along the inside of the joint, and a surface of the joint is provided. It is characterized by being filled with a wet sealing material along the side.

[0009] According to the above-mentioned structure, a watertight swelling dry sealing material and a wet sealing material can be used as a double sealing structure to ensure watertightness and ensure waterproofing. Moreover, since the water-absorbing and swellable dry seal material has a property of swelling due to flooding, even if it is flooded, it can be effectively prevented from leaking into the building. In addition, the water-absorbing and swellable dry sealing material is also advantageous because it also has the function of a backup material for the wet sealing material.

Further, when the horizontal joints and the vertical joints intersect, and the dry seal materials attached to those joints intersect at the intersections in a continuous state,
As in the conventional example, in order to secure a reliable seal at the intersection like a dry seal using a mere rubber material, the seal at the intersection is stacked without forming it into a special shape, so the structure is Easy and good workability,
The number of parts of the sealing material can be reduced to reduce the cost, and the number of seams can be reduced to improve the watertightness.

The cross-section of the dry seal attached to one of the horizontal joint and the vertical joint is circular or substantially circular, and the cross-section of the dry seal attached to the other is rectangular or trapezoidal. In some cases, sealability at joints is good and workability is good.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the joint structure of an outer wall panel according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a joint structure of an outer wall panel according to the present invention, FIG. 2 is a vertical sectional explanatory view showing a configuration of a horizontal joint part of the first embodiment, and FIG. FIG. 4A is a cross-sectional explanatory view showing a configuration of a vertical joint, and FIG. 4A is a vertical cross-sectional explanatory view showing a state in which a dry sealing material having a trapezoidal cross section is inserted into the horizontal joint.
FIG. 5B is a cross-sectional explanatory view showing a state where a dry sealing material having a circular cross section is inserted into a vertical joint, and FIG.
FIG. 5 (b) is a vertical cross-sectional explanatory view showing the state of the intersection of the dry seal materials, FIG. 5 (b) is a horizontal cross-sectional explanatory view showing the state of the intersection of the dry seal materials of FIGS. FIG. 6 (a), (b)
Is a cross-sectional explanatory view showing a state in which the dry sealing material is opened at the joint intersection and adapts to the corner shape of the outer wall panel. FIG. 7 is a cross-sectional explanatory view showing a second embodiment of the joint structure of the outer wall panel according to the present invention. FIG. 8 is a perspective view showing a third embodiment of a joint structure of an outer wall panel according to the present invention, and FIG. 9 is a cross-sectional explanatory view showing a configuration of a vertical joint part of the third embodiment.

1 to 6, reference numeral 1 denotes an ALC (lightweight cellular concrete) panel serving as an outer wall panel of a building, which is disposed adjacent to and supported by supporting means (not shown). A notch 1a for providing a water-swellable dry seal material 5 and a wet seal material 6 is formed along a vertical joint 3 which is a vertical joint on the front side of the ALC panel 1 (outside the building). ing.

A horizontal joint 2 serving as a horizontal joint shown in FIG.
As a sealing structure of the vertical joint 3 serving as a vertical joint shown in FIG. 3, first, each joint is provided on a horizontal joint 2 and a small joint surface of the vertical joint 3 of the ALC panel 1 which is provided vertically and horizontally. After attaching the water-swellable dry-type sealing materials 4 and 5 from the outside of the building along the insides of the building 2 and 3 (the inside of the building), a sealing primer is applied, and the surface side of the joints 2 and 3 (the building side) Along the outside) is filled with the wet sealing material 6.

In the present embodiment, the water-swellable dry seal materials 4 and 5 are made of a soft urethane foam mixed with a water-absorbing polymer (for example, Nippalon JS type manufactured by Nippon Hakko Co., Ltd.). The dry seal member 4 is formed of a soft type, and the dry seal member 5 for the vertical joint 3 is formed of a standard hardness.

The dry seals 4 and 5 have a width larger than the joint width of the horizontal joints 2 and the vertical joints 3 and AL
It has a length larger than the width and length of the C panel 1, is arranged so as to straddle a plurality of ALC panels 1, and intersects continuously at intersections of the horizontal joints 2 and the vertical joints 3. After the ALC panel 1 is installed next to the building, it can be inserted into the joints 2 and 3 from the outside of the building.

The outer shape of the dry sealing materials 4 and 5 can be of various shapes as long as a certain compression ratio can be secured.
As shown in FIGS. 4A and 4B, the cross section of the dry sealing material 4 inserted into the horizontal joint portion 2 is configured as a trapezoid, and the vertical joint portion 3 is formed.
It is particularly preferable that the cross-section of the dry seal material 5 inserted into the cylindrical shape is circular.

With such a configuration, FIG.
As shown in (b), A of the dry sealing material 4 of the horizontal joint 2
The water stop portion 4a pressed against the small surface of the LC panel 1 and the water stop portion 5a pressed against the small surface of the ALC panel 1 of the dry sealing material 5 at the vertical joint 3 can be made continuous (contact), and the dry type Even at the intersections 7 of the sealing materials 4 and 5, water tightness can be ensured and the occurrence of water leakage can be reliably prevented.

In addition, the ALC panel 1 may have a small chipping or chipping at the time of manufacturing or after manufacturing, so that each joint 2,
3A and 3B, there is no guarantee that a perfect right angle is ensured, but as shown in FIGS. 6A and 6B, the dry sealing material 4 of the horizontal joint 2 and the dry sealing material of the vertical joint 3 When the compression force is released at the intersection portion 7 and the ALC panel 5 expands, the ALC panels 1 adjacent to the upper, lower, left, and right sides are adapted to the shape of the corners and are in close contact with each other, thereby ensuring watertightness.

In this embodiment, as shown in FIGS. 4A and 4B, for example, the width of the horizontal joint portion 2 of the adjacent ALC panel 1 is 10 mm, and the upper part of the dry sealing material 4 is trapezoidal in cross section. 4b
Is 10 mm, the length of the lower bottom 4c is 15 mm, the height 4d is 20 mm, and is flexible. The width of the vertical joint 3 of the adjacent ALC panel 1 is 9 mm, and the cross section of the dry sealing material 5 is circular. It has an outer diameter of 15 mm and is hard. In this case, the compression ratio of the dry seal materials 4 and 5 is set at a value of 47% to 13%.

The cross section of the dry sealing material 4 may be a square or another polygon other than the trapezoid. However, when the cross section is formed as a trapezoid, the cross joint portion is formed as shown in FIG. Inserting the dry seal member 4 into the upper portion 4 from the upper bottom 4b side facilitates the insertion operation, which is preferable. In addition, the cross section of the dry seal material 5 may be formed in a substantially circular shape such as an elliptical shape or an elliptical shape in addition to the circular shape.

Further, as the wet sealing material 6, a general-purpose material such as an acrylic type, a urethane type, and a modified silicon type can be used.

Next, the mechanism of water absorption and swelling of the water-swellable dry seal materials 4 and 5 will be described for a case where a soft urethane foam mixed with a water-absorbing polymer is used. First,
Water that has entered the surfaces of the dry sealing members 4 and 5 of the soft urethane foam mixed with the water-absorbing polymer due to water leakage from the wet sealing member 6 is first prevented from entering by the water stopping function due to the compressive force of the urethane foam member. .

Next, of the water-absorbing polymer dispersed throughout the urethane foam, only the portion of the water-absorbing polymer that is in contact with water absorbs water and swells. By this swelling, the space in the cell of the urethane foam is filled, and the passage of water of the open cell is blocked and swelled, so that the compressive force at the contact interface is increased and the watertightness is improved.

The dry seals 4 and 5 inserted into the joints 2 and 3 serve not only as a water-tight function but also as a backup material for the wet seal 6 and prevent the wet seal 6 from bonding on three sides. As a result, cracks in the wet seal material 6 can be prevented.

In the present embodiment, the cross section of the dry sealing material 4 to be attached to the horizontal joint portion 2 is a square, a trapezoid or another polygon, and the dry sealing material 5 to be attached to the vertical joint portion 3 is formed. The cross-section was constituted by a circular or oval cross section, or an elliptical substantially circular shape. Conversely, the cross-section of the dry seal material 5 to be attached to the vertical joint 3 was constituted by a square, trapezoid or other polygon. In addition, the shape of the dry sealing material 4 to be attached to the horizontal joint portion 2 may be a substantially circular shape having a circular or elliptical or elliptical cross section.

According to the above construction, the water-swelling dry seals 4, 5 and the wet seal 6 form a double seal structure to ensure watertightness and ensure waterproofing. Has the property of swelling by flooding, so that even if it is flooded, it can be effectively prevented from leaking into the building. Further, it is possible to absorb a dimensional error of the joint width of each joint portion 2 and 3. Further, the dry sealing materials 4 and 5 are also advantageous because they also function as a backup material for the wet sealing material 6.

When the horizontal joints 2 and the vertical joints 3 intersect, dry seals 4, 5 attached to those joints are used.
Intersect at the intersection 7 in a continuous state, so that the sealing material at the intersection is specially provided in order to ensure a reliable seal at the intersection like a dry seal using a simple rubber material as in the above-described conventional example. The structure is simple and the workability is good because it is stacked as it is without forming it into a simple shape.It is possible to reduce the number of parts of the sealing material to reduce the cost and improve the watertightness by reducing the number of seams. I can do it.

Further, the cross section of the dry seal material attached to one of the horizontal joint portion 2 or the vertical joint portion 3 is circular or substantially circular, and the cross section of the dry seal material attached to the other is rectangular or trapezoidal. Has good sealability at the joints,
Good workability.

Further, since the dry seals 4 and 5 are installed on the inner side of the wet seal 6 (inside the building), they are not easily affected by deterioration factors such as ultraviolet rays, heat and ozone from the outside. Is done.

Further, since the dry seals 4 and 5 can be inserted from the outside of the building after the ALC panel 1 is installed, the work is easy, and the work of replacing the dry seals 4 and 5 during maintenance is easy. I can do it.

Next, a second embodiment of the joint structure of the outer wall panel according to the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

FIG. 7 shows the seal structure at the corner of the building. An ALC corner panel 11 serving as an outer wall panel forming an outside corner of a building is provided adjacent to a planar ALC panel 1 arranged orthogonally to the left and right, and a small face of the ALC corner panel 11 and a planar ALC panel 1 are arranged. The vertical joint portion 3 is formed between the fore-edge surface and the fore-edge surface.

In the same manner as in the first embodiment described above, a dry process is carried out along the inside of the vertical joint 3 from the outside of the building between the notch 1a of the flat ALC panel 1 and the small face of the ALC corner panel 11. The sealing material 5 is inserted and mounted, and the wet sealing material 6 is filled along the surface side of the vertical joint 3.

Although not shown, A vertically adjacent
The dry sealing material 5 is inserted into the LC joint panel 11 and the flat ALC panel 1 from the outside of the building along the inside of the joint, as in the first embodiment. Then, the wet sealing material 6 is filled along the surface side of the horizontal joint. Other configurations are configured in the same manner as in the first embodiment, and similar effects can be obtained.

Next, a third embodiment of the joint structure of the outer wall panel according to the present invention will be described with reference to FIGS.
The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

FIGS. 8 and 9 show the seal structure at the corner of the building. The fore face of one ALC panel 1 abuts on the surface side (outside of the building) of the other ALC panel 1 to form a corner of the building, and the fore face of the one ALC panel 1 has a vertical joint 3 A cutout portion 1a for providing a water-swellable dry seal material 5 and a wet seal material 6 is formed along the notch.

Then, a dry seal is formed in the space defined by the notch 1a of the vertical joint 3 and the surface of the other ALC panel 1 from the outside of the building (the lower side in FIG. 8) along the inside of the vertical joint 3. The material 5 is inserted and mounted, and the wet sealing material 6 is filled along the surface side of the vertical joint 3.

As shown in FIG. 8, the dry sealing material 5 of this embodiment has a pentagonal cross section (a shape obtained by obliquely removing a rectangular corner), and extends from the sharp end portion 5b to the vertical joint portion. 3 is inserted. In FIG. 8, 5c is an ALC panel 1.
Are formed corresponding to the grooves 1c formed in the lateral direction of FIG.

Although not shown in the figure, A vertically adjacent
As in the first embodiment described above, a dry-type sealing material 5 is inserted from the outside of the building along the inside of the horizontal joint to be attached to each of the horizontal joints of the LC panel 1, and the surface of the horizontal joint is provided. The wet sealing material 6 is filled along the side. Other configurations are configured in the same manner as in the first embodiment, and similar effects can be obtained.

The water-absorbing and swellable dry sealing materials 4 and 5
It is also possible to apply a super-absorbent fiber sealing material in addition to a soft urethane foam mixed with a water-absorbing polymer. Similarly, when the dry-type sealing materials 4 and 5 are made of a super-absorbent fiber sealing material, only the fiber in contact with the water that has penetrated absorbs water and swells, thereby blocking the water passage and swelling. By doing so, the compressive force of the contact interface increases, and the watertightness can be improved.

[0042]

As described above, the present invention has the above-described structure and operation, so that a water-swelling dry seal material and a wet seal material are used to secure a water-tight performance as a double seal structure. Since the dry sealing material and the wet sealing material can be installed, the outer wall panel can be easily installed.

Further, when the water-swellable dry seal material is overlapped and continuously intersected at the joint intersection, there is no need to use a specially-shaped dry seal material at the joint intersection, and parts of the seal material are not required. The number of seams can be reduced and the watertightness can be improved by reducing the number of points and cost.

The cross section of the dry seal material attached to one of the horizontal joint and the vertical joint is circular or substantially circular, and the cross section of the dry seal material attached to the other is rectangular or trapezoidal. In some cases, sealability at joints is good and workability is good.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of a joint structure of an outer wall panel according to the present invention.

FIG. 2 is an explanatory longitudinal sectional view illustrating a configuration of a horizontal joint portion according to the first embodiment.

FIG. 3 is an explanatory cross-sectional view illustrating a configuration of a vertical joint portion according to the first embodiment.

FIG. 4A is a vertical cross-sectional explanatory view showing a state where a dry sealing material having a trapezoidal cross section is inserted into a horizontal joint, and FIG. 4B is a view showing a state where a dry sealing material having a circular cross section is inserted into a vertical joint. FIG.

5 (a) is a vertical cross-sectional explanatory view showing the state of the intersection of the dry seal materials of FIGS. 4 (a) and 4 (b), and FIG.
It is a cross section explanatory view showing a situation of an intersection of a dry seal material of (a) and (b).

6 (a) and 6 (b) are cross-sectional explanatory views showing a manner in which a dry seal material is opened at an intersection of joints to adjust to a corner shape of an outer wall panel.

FIG. 7 is an explanatory cross-sectional view showing a second embodiment of the joint structure of the outer wall panel according to the present invention.

FIG. 8 is a perspective view showing a third embodiment of the joint structure of the outer wall panel according to the present invention.

FIG. 9 is an explanatory cross-sectional view illustrating a configuration of a vertical joint portion according to a third embodiment.

FIG. 10 is a diagram illustrating a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... ALC panel 1a ... Notch 1c ... Groove 2 ... Horizontal joint 3 ... Vertical joint 4 ... Dry sealing material 4a ... Water stopping part 4b ... Top bottom 4c ... Bottom bottom 4d ... Height 5 ... Dry sealing material 5a ... Water stop part 5b ... Tip part 5c ... Projection part 6 ... Wet seal material 7 ... Crossing part 11 ... ALC corner panel

Claims (3)

[Claims] 1. A joint structure for an outer wall panel, characterized in that a water-swellable dry seal material is attached along an inner side of the joint portion, and a wet seal material is filled along a surface side of the joint portion. The outer wall panel joint structure. 2. When a horizontal joint and a vertical joint intersect with each other, the dry seal materials attached to the joints intersect at the intersection in a continuous state. The joint structure of the outer wall panel according to 1. 3. The cross-section of the dry seal material attached to one of the horizontal joint and the vertical joint is circular or substantially circular, and the cross-section of the dry seal material attached to the other is rectangular or trapezoidal. The joint structure of the outer wall panel according to claim 2, wherein the joint is provided.