JP3675937B2 - Thermal insulation structure and construction method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating structure suitable for use of a hole-down hardware and a construction method thereof.
[0002]
[Prior art]
In order to save energy in a building, it is necessary to reduce the heat loss of the building by making the boundary surface such as the floor, wall, and ceiling into a heat insulating structure. There are various types of heat insulation structures depending on the type of building structure and the degree of function. In wooden construction, the outer wall construction method in which the heat insulating material is stretched outside the wall or the heat insulating material is filled in the wall. In many cases, the heat insulation structure is formed by any of the filling methods.
[0003]
FIG. 6 (a) shows a heat insulating structure formed by a filling method. The heat insulating structure shown in the figure is a heat insulating structure of a wall including the pillar 1, and a fiber-based heat insulating material such as glass wool between the structural plywood 2 fixed to the pillar 1 and the board receiver 4 and the interior base material 3. 5 is filled for heat insulation.
[0004]
Such a filling method has an advantage that the heat insulating material can be easily accommodated between the columns or between the intercolumns, and the amount of the heat insulating material to be used can be reduced as compared with the outer surface method.
[0005]
On the other hand, when joining a pillar of a wooden house to a base or the like, a joint called a hole-down hardware may be used. FIG. 6 (b) shows a state in which the pillar is joined to the base using the hole-down hardware. As can be seen in the figure, the hole-down hardware 9 is generally composed of a bottom plate and a side plate erected from the edge thereof, and the side plate is fixed to the column 1 with a lag screw or the like, and is embedded in the foundation 6 in advance. The anchor bolt 7 is inserted into a bolt hole formed in the bottom plate and then tightened with a nut, and the column 1 can be pulled to the base 8 to improve the pull-out strength of the column.
[0006]
[Problems to be solved by the invention]
However, when heat insulation is performed on the wall using the hole-down hardware 9 by the above-described filling method, it is difficult to fit the heat insulating material 5 in the vicinity of the hardware 9 as shown in FIG. The problem that occurred was caused.
[0007]
The generation of such gaps not only increases the amount of heat loss by acting as a thermal bridge, but also causes surface condensation due to a decrease in temperature, and the durability of heat insulating materials and structural materials due to internal condensation that occurs around hardware. It may also cause a decrease in.
[0008]
The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide a heat insulating structure capable of preventing a gap from being generated in a heat insulating material in the vicinity of a connector and a method for constructing the heat insulating structure.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to the heat insulating structure of the present invention, as described in claim 1, a partition material is disposed in a cross section of a wall, a ceiling, or a floor, and the cross section is divided into a plurality of sections. In each of the compartments, some of the compartments are injected with in-situ foam-type heat insulating material, and the other compartments are filled with pre-formed heat insulating material. It is what was made the division.
[0011]
Moreover, the construction method of the heat insulation structure according to the present invention is as described in claim 2, wherein a partition material is disposed in a cross section of a wall, a ceiling or a floor, and the inside of the wall is divided into a plurality of sections. Among the compartments, other compartments except for some compartments in which the shaft assembly connector is arranged are filled with a pre-formed heat insulating material, while in some of the compartments, the mold material is applied from both sides of the cross section. It is attached and in-situ foam type heat insulating material is injected into the compartment.
[0012]
In the heat insulating structure and its construction method of the present invention, in-situ foam type heat insulating material is injected instead of using a pre-formed heat insulating material for some sections.
[0013]
Then, the in-situ foam type heat insulating material spreads throughout the injected compartment, and in the case where the shaft assembly connector is arranged in the compartment, the heat insulating material is also provided around the shaft assembly connector. Are closely packed and no gaps are formed.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a heat insulating structure and a construction method thereof according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.
[0015]
FIG. 1 shows a heat insulating structure according to this embodiment. As can be seen from the figure, the heat insulating structure according to the present embodiment has partition members 11 and 12 arranged in a wall constituted by a base 8 and a pillar 1 joined to the base 8 via a pillar connector 9. The wall is divided into a plurality of sections, and among the sections, the in-situ foam-type heat insulating material 13 is injected into the sections where the column joints 9 are arranged, and the other sections are pre-formed. Insulating material 5 is filled.
[0016]
In addition, in the wall, a board receiver 4 for attaching an interior base material 3 such as a structural plywood 2 or a plaster board is attached to the pillar 1, and a spacer holder 16 is attached to the base 8. The partition material 11 described above is bridged between the space post 14 and the board support 4 erected on the space post receiver 16, and the partition material 12 stands between the space post support 16 and the partition material 11. It is set up.
[0017]
The pre-formed heat insulating material 5 may be appropriately selected from fiber heat insulating materials such as glass wool, rock wool, cellulose fiber, and soft fiber board, and foamed plastic type heat insulating materials such as extruded polystyrene foam, polystyrene foam, and rigid urethane foam. Good.
[0018]
The in-situ foam type heat insulating material 13 is preferably made of, for example, polyurethane.
[0019]
FIG. 2 is a flowchart showing a procedure for constructing the heat insulating structure according to the present embodiment. As can be seen from the figure, in the construction method according to the present embodiment, first, the shafts such as the base 8 and the pillar 1 are assembled, and then the stud holder 16 is laid on the base 8 (step 101).
[0020]
Next, the stud 14 and the board holder 4 are erected on the stud holder 16 (step 102), and the pillar 1 is fastened to the base 8 or the foundation 6 with the pillar joint 9 (step 103).
[0021]
Next, as shown in FIG. 3, the partition members 11 and 12 are arranged in the wall in the vicinity of the column connector 9 to divide the inside of the wall section into a plurality of sections. Is partitioned from the surrounding wall space (step 104).
[0022]
Next, as shown in FIG. 4, formwork materials 21a and 21b made of plywood or the like are attached from both sides of the wall cross section to the section where the column connector 9 is disposed (step 105), and the formwork material 21a is provided. An in-situ foam type heat insulating material 13 made of polyurethane or the like is injected from the injection port 22 (step 106).
[0023]
Then, the heat insulating material 13 is a pillar jointer that is spread all over the compartment surrounded by the board receiver 4, the inter-column holder 16, the partition material 11, the partition material 12, and the formwork materials 21a and 21b. 9 is also completely injected around.
[0024]
On the other hand, the other compartments are filled with the heat insulating material 5 (step 106).
[0025]
Next, when the in-situ foam type heat insulating material 13 is solidified, the mold materials 21a and 21b are removed and removed (step 107).
[0026]
When the installation of the heat insulating material is completed, a moisture-proof layer (not shown) is pasted on the indoor side, the interior base material 3 is attached on the interior, and the structural plywood 2 is attached on the outdoor side, as in the past.
[0027]
As described above, according to the heat insulating structure and the construction method thereof according to the present embodiment, the inside of the wall is divided into a plurality of sections by the partition material, and among them, the section where the column connector is disposed is the site. Since the foam type heat insulating material is injected, there is no gap around the column joint.
[0028]
Therefore, as in the past, the gap around the column joint becomes a thermal bridge, causing an increase in heat loss, surface condensation due to a temperature drop, and internal condensation occurring near the column joint. This makes it possible to prevent problems such as a decrease in durability of the heat insulating material and the structural material.
[0029]
In the present embodiment, an example in which a hole-down hardware is used as a column connector has been described. However, other reinforcing hardware may be used instead of the connector.
[0030]
Further, in this embodiment, the in-situ foam-type heat insulating material is injected into the section where the shaft assembly connector is disposed, but it is not necessarily a shaft assembly connector, for example, around the circumference where the pipe is installed. An in-situ foam type heat insulating material may be injected into the partition by enclosing it with a partition material.
[0031]
Moreover, in this embodiment, although the formwork material was installed as a dam plate on both sides of the wall and removed after completion of the heat insulation work, a structural plywood or an interior base material may be used as the formwork material.
[0032]
Further, in the present embodiment, an example in which the present invention is applied around a column joint installed between a pillar and a base on the first floor has been described. However, as shown in FIG. The same applies to the case where the column joints 9 and 9 are fastened to the bolts 33 and the pillars 1 and 31 are fastened to the beams 32 respectively. Can do.
[0033]
Moreover, although the example applied to the wall was demonstrated in this embodiment, it cannot be overemphasized that you may apply not only to a wall but to a ceiling and a floor.
[0034]
【The invention's effect】
As described above, the heat insulating structure of the present invention is provided with a partition member in a cross section of a wall, ceiling, or floor, and divides the cross section into a plurality of sections. In-situ foam-type heat insulating material is injected into the other compartments, and the other compartments are filled with pre-formed heat insulating material, so that there is no gap around the joint and piping. Therefore, it is possible to prevent problems such as an increase in heat loss, generation of surface dew condensation due to temperature decrease, and decrease in durability of heat insulating materials and structural materials due to internal dew condensation generated near the column joint.
[0035]
Further, the construction method of the heat insulation structure according to the present invention includes a partition member disposed in a cross section of a wall, a ceiling, or a floor to divide the inside of the wall into a plurality of sections. The other compartments except for some of the compartments are filled with a pre-formed heat insulating material, while in some of the compartments formwork materials are attached from both sides of the cross section and foamed in-situ in the compartments. Since the type of heat insulating material is injected, there is no gap around the joint and pipe. Therefore, it is possible to prevent problems such as an increase in heat loss, generation of surface dew condensation due to temperature decrease, and decrease in durability of heat insulating materials and structural materials due to internal dew condensation generated near the column joint.
[0036]
[Brief description of the drawings]
1A and 1B are views of a heat insulating structure according to the present embodiment, in which FIG. 1A is a front view, and FIG. 1B is a horizontal sectional view taken along line AA.
FIG. 2 is a flowchart showing a construction method for a heat insulating structure according to the present embodiment.
FIG. 3 is a front view at a stage where a partition member is disposed.
FIG. 4 is a detailed cross-sectional view of a state in which an in-situ foam-type heat insulating material is injected into a section where the column connector is disposed, as viewed from the front side of the column connector.
FIG. 5 is a front view showing a modification of the heat insulating structure according to the embodiment.
6A and 6B are diagrams showing a conventional heat insulation structure, in which FIG. 6A is a horizontal sectional view, and FIG. 6B is an overall perspective view.
[Explanation of symbols]
5 Pre-formed insulation 9 Column joint (shaft assembly)
11, 12 Partition material 13 On-site foam type heat insulating material 21a, 21b Formwork material

Claims (2)

  A partition material is arranged in the cross section of the wall, ceiling or floor and the inside of the cross section is divided into a plurality of sections, and in-situ foam-type heat insulating material is injected into some sections of each section. A heat insulating structure characterized in that the section is filled with a pre-formed heat insulating material, and the part of the section is a section in which a shaft assembly connector is disposed.   The partition material is arranged in the cross section of the wall, ceiling, or floor to divide the inside of the wall into a plurality of sections, and among these sections, other sections excluding a part of the section where the shaft assembly connector is disposed Is filled with a pre-formed heat insulating material, while a mold material is attached to the partial section from both sides of the cross section, and an in-situ foam type heat insulating material is injected into the section. Construction method of structure.

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