JPH0518984B2 - - Google Patents

Description

Detailed Description of the Invention [Technical Field] The present invention relates to an exterior wall panel joint structure that prevents dew condensation from forming within the exterior wall of a building by providing a ventilation layer through which air can circulate. It is something.

[Background Art] In cold regions such as Hokkaido and the Tohoku region, there is a large temperature difference between the outside air temperature and the indoor sound, so various types of insulation structures for external walls have been adopted. The conventional insulation structure for exterior walls is to increase the thickness of the insulation material loaded inside the exterior wall or improve the density of the insulation material, but as we advance in this way, increasing the insulation of the exterior wall, Instead of the problem of internal dew condensation that previously occurred on indoor surfaces, the problem of dew condensation occurring inside walls has now arisen.

[Object of the Invention] The present invention has been made in view of the above points, and includes providing a ventilation layer in the outer wall through which air circulates so that dew condensation formed inside the outer wall is discharged to the outside. The object of the present invention is to provide a joint structure for exterior wall panels that can prevent dew condensation from occurring.

[Disclosure of the Invention] That is, the joint structure of the exterior wall panel of the present invention is as follows:
An upper-floor exterior wall panel 2 is installed on the upper side of the beam 1, and a lower-floor exterior wall panel 2 is installed on the lower side of the beam 1. On the outdoor side of the beam 1, an outdoor A support plate 3 made of a heat insulating material is provided with grooves 11 extending vertically in the surface, and the support plate 3 is disposed in the groove 11.
A vertically long bonding material 4 is arranged on the outdoor surface of the building, and the upper end of the bonding material 4 is joined to the upper floor exterior wall panel 2, and the lower end of the bonding material 4 is joined to the lower floor exterior wall panel 2. Exterior materials 5 are attached to the outdoor surfaces of the exterior wall panels 2 on the lower floor through gaps to form ventilation layers 6 between each exterior wall panel 2 and the exterior materials 5, and the groove width of the groove 11 is adjusted to the width of the bonding material 4. The support plate 3 is made larger than the width dimension and is connected to the support plate 3 through the concave groove 11 and the bonding material 4.
Exterior material 5 attached to the outdoor side of
A ventilation layer 6 is formed between the downstairs exterior wall panel 2 and the exterior material 5, with a vertical ventilation path 7 formed therebetween.
and a ventilation layer 6 formed between the upper floor exterior wall panel 2 and the exterior material 5 through a ventilation path 7. The above object is achieved by ventilating air from the floor through the ventilation path 7 into the ventilation layer 6 of the outer wall on the floor, and exhausting the air containing a large amount of moisture to the outside from the upper part of the outer wall.

The present invention will be described in detail below based on examples. 1st
As shown in Figures 1 and 2, above the beam 1, which is made of steel lattice beams, etc., there is an external wall panel 2 on the floor.
is arranged and fixed, and a downstairs exterior wall panel 2 is arranged and fixed below the beam 1. Here, the outer wall panel 2 is formed by pasting plate materials 9 on the front and back surfaces of a core material 8, and a plurality of exterior material strips 10 are attached in advance to the outdoor surface of the outer wall panel 2. On the outdoor side of the beam 1, a support plate 3 having excellent heat insulation properties is attached to the beam between the upper and lower floor exterior wall panels 2, 2. A plurality of vertically long grooves 11 are provided on the outdoor surface of the support plate 3.
A bonding material 4 having a width narrower than the groove 11 is disposed inside the groove 1. The upper end of this bonding material 4 is bonded to the above-mentioned downstairs exterior wall panel 2, and the lower end of the bonding material 4 is connected to the downstairs exterior wall panel 2. It is joined. The bonding material 4 is made of a material with excellent heat insulation properties, such as wood, and is made in advance at a factory or the like with good dimensional accuracy. The bonding material 4 can be attached to the outer wall panel 2 by any method such as gluing, nailing, screwing, etc., and there is no ventilation between the bonding material 4 and the groove 11 of the support plate 3. A path 7 will be formed. Further, the support plate 3 and the bonding material 4 may be formed as separate pieces as in the embodiment shown in the figure, or may be formed as one piece. Then, an exterior material 5 is arranged on the outdoor surface of the exterior wall panels 2, 2 on the upper floor and the lower floor and is fixed to each foundation crosspiece 10 of the exterior wall panel 2, and between the exterior wall panel 2 and the exterior material 5, A ventilation layer 6 running in the vertical direction is formed. In addition, in the trunk insert part (curtain board part) which is the beam 1 part, the outer wall panel 2 is fixed using the bonding material 4 as a supporting material, and as a result, a wall panel 2 is formed between the downstairs outer wall panel 2 and the exterior material 5. The ventilation layer 6 formed between the upper floor exterior wall panel 2 and the exterior material 5 communicates with the ventilation path 7 formed between the groove 11 of the heat insulating material and the bonding material 4. It's getting old.

Next, the structure of the lower part of the outer wall panel 2 will be explained. As shown in FIGS. 3 and 4, a cover piece 12 is fixed to the outdoor side at the lower end of the outer wall panel 2, and this cover piece 12 and Exterior material 5 through the gap
A water piece 13 is fixed to the lower end of the cover piece 12, and an air port 15 communicating with the ventilation layer 6 of the outer wall 14 is formed between the cover piece 12 and the water piece 13. In the figure, 16 is a cloth foundation, 17 is a foundation, and 18 is foundation mortar.

Therefore, ventilation layers 6 are formed in the outer walls 14 on the upper and lower floors, and each ventilation layer 6 in the outer walls 14 on the upper and lower floors are communicated with each other through the ventilation passages 7. The air in the outer wall 14 on the lower floor can be raised through the upper floor, and the air containing a large amount of moisture can be discharged to the outside from an exhaust port (not shown) provided at the upper part of the outer wall 14 on the upper floor. It is something. By doing this, the outer wall panels 2, 2 on the upper and lower floors are firmly joined together by the bonding material 4, and a support plate 3 with good heat insulation is provided at the beam 1 portion. Because of this, sufficient anti-fogging performance can be ensured even in cold regions.
At the same time, since this bonding material 4 has a function as a base material for the exterior material 5, there is no need to construct a separate base material, and the construction can be streamlined. In addition, since the construction is done using parts that are pre-produced in a factory, the initial purpose can be easily achieved.
It is also possible to ensure that the ventilation layer 6 has a constant thickness in the ventilation groove method. In other words, in the present invention, firmly joining the upper and lower exterior wall panels 2 with the joining material 4 also includes attaching the exterior material foundation crosspiece 10, securing an air layer, and preventing the steel frame portion. be.

In addition, Figure 5 shows exterior wall panel 2 at the projecting corner of the building.
The joint structure is shown. The bonding material 4 is formed to have an L-shaped cross section, and a corner material 21 is attached to the inner surface of the corner portion of the protruding corner bonding material 4. A plate-shaped heat insulating material 22 is attached to the inner surface of the protruding corner joining material 4, and an elastic airtight material 23 is adhered to the end of the heat insulating material 22. Each of these members is integrally attached to the protruding corner joining material 4 in advance. A positioning recess 24 is cut out in the corner of the corner material 21 over the entire length of the top and bottom, and by applying the positioning recess 24 of the corner material 21 to the corner of the pillar material 20, the protruding corner is joined at a predetermined position. The material 4 is adapted to be attached to the corner portion of the pillar material 20. Then, the exterior wall 14 is constructed by pasting the exterior material 5 on the outdoor surface of the protruding corner joining material 4. Again, the plate-shaped heat insulating material 22 plays the role of preventing cold bridging of the pillar material 20, and the elastic airtight material 23 always comes into contact with the side end surface of the outer wall panel 2 as shown in the figure. It is designed to prevent a gap between the column member 20 and the column member 20 from being formed due to errors in mounting dimensions of each member. Further, the protruding corner joining material 4 itself serves as an exterior base material, and also serves as a spacer for providing a ventilation passage 7 within the outer wall 14.

Moreover, when joining the outer wall panels 2 in a straight line, it is done as shown in FIGS. 6 and 7. In this embodiment, the bonding material 4 is formed into a plate shape, and a plate-shaped heat insulating material 22 is attached to the inner surface of the flat bonding material 4, and elastic airtight materials 23 are attached to both sides of the heat insulating material 22. , 23 are attached.
This flat bonding material 4 is used as a spacer and is attached to the exterior material 5 on the surface of the flat bonding material 4, and has the same thickness as the exterior material base crosspiece 10 that has been previously attached at the factory stage. Further, in order to absorb construction errors of the outer wall panel 2, a material having a slight cushioning property (elasticity) may be interposed on the surface of the bonding material 4 to be bonded to the outer wall panel 2.

As shown in FIG. 8, in order to ensure the fixation of the support plate 3, to facilitate positioning during construction, and to further improve the heat insulation properties of the base of the exterior wall panel 2 on the upper floor, A prismatic positioning aid 26 may be integrally fixed to the upper end of the plate 3.

[Effects of the Invention] As described above, the present invention provides a method in which a support plate is provided between the upper and lower floor exterior wall panels on the outdoor side of the beam, and a vertically long bonding material is provided on the outdoor surface of the support plate. Then, the upper end of the joining material is joined to the upper floor exterior wall panel, and the lower end of the joining material is joined to the downstairs exterior wall panel, and a vertical groove is formed on the outdoor surface of the support plate, and the groove width of the groove is is larger than the width of the bonding material to form a vertical ventilation path between the concave groove and the exterior material attached to the outdoor side of the support board via the bonding material, and The ventilation layer formed between the panel and the exterior wall panel and the ventilation layer formed between the upper-floor exterior wall panel and the exterior material are communicated via the ventilation path, so the ventilation layer formed on the exterior wall panel on the lower floor The air inside the exterior wall can be raised through the ventilation path to the ventilation layer formed on the exterior wall panel on the floor above, and even though the support plate is attached to the outdoor side of the beam, the air inside the exterior wall is not ventilated. The air can be discharged from the top of the exterior wall by raising the layer, and air containing a large amount of moisture can be discharged to the outside from the exhaust port provided at the top of the exterior wall. It is possible to prevent dew condensation from forming on the support plate, and since the ventilation passage can be formed with a groove formed in the support plate, there is no need to reduce the thickness of the support plate, and the support plate can prevent the beam from forming. It is possible to ensure thermal insulation of the part. In addition, a vertically long bonding material is placed on the outdoor surface of the support plate within the groove of the support plate formed with a heat insulating material, and the top end of the bonding material is bonded to the upper floor exterior wall panel, and the bottom end of the bonding material is Since it is bonded to the downstairs exterior wall panel, exterior material can be attached to the outdoor surface of the support board via the bonding material, and the support board can be used as a heat insulator without having to consider bondability with the exterior material. Any excellent material can be used, and high heat insulation properties can be ensured at the beam locations.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of an embodiment of the present invention, FIG. 2 is an enlarged perspective view of the main parts of the same, FIG. 3 is a sectional view of the main parts of the same, and FIG. 4 is a partially cutaway perspective view of the same. Figures 5a and b are a partially cutaway perspective view and an enlarged perspective view of essential parts of another embodiment same as the above, Figure 6 is a partially cutaway exploded perspective view of still another embodiment same as the above, and Figure 7 is the same as the above. FIG. 8 is a partially cutaway perspective view of still another embodiment of the same. 1 is a beam, 2 is an exterior wall panel, 3 is a support plate, 4 is a bonding material, 5 is an exterior material, 6 is a ventilation layer, 7 is a ventilation path, 1
1 is a concave groove.

Claims (1)

[Claims] 1. Arrange the upper floor exterior wall panel on the upper side of the beam, and arrange the lower floor exterior wall panel on the lower side of the beam, and on the outdoor side of the beam, extend vertically between the upper and lower floor exterior wall panels to the outdoor surface. A support plate made of heat insulating material is provided with a recessed groove, and a long bonding material is placed in the vertical direction on the outdoor surface of the support plate within the groove, and the upper end of the bonding material is attached to the upper floor exterior wall panel. At the same time, the lower end of the bonding material is joined to the downstairs exterior wall panel, and the exterior material is attached to the outdoor surfaces of the exterior wall panels on the upper and lower floors through a gap to create a ventilation layer between each exterior wall panel and the exterior wall panel. At the same time, the groove width of the groove is made larger than the width of the bonding material to create a vertical vertical gap between the groove, the bonding material, and the exterior material attached to the outdoor surface of the support plate via the bonding material. A ventilation path is formed, and the ventilation layer formed between the downstairs exterior wall panel and the exterior material is communicated with the ventilation layer formed between the upstairs exterior wall panel and the exterior material through the ventilation pathway. A joint structure for exterior wall panels featuring: