JP2018168676A - Fixing structure of insulation material and floor insulation structure - Google Patents

Abstract

To provide a fixing structure of an insulation material capable of easily disposing an insulation material under a floor and facilitating the work.SOLUTION: The fixing structure of an insulation material includes: a first insulation material 10 which is filled in an inner space 6 enclosed by sleepers 3 of a floor construction 5; a second insulation material 20 constituted of a planer insulation material which has self-shape retention property, and which is disposed under the inner space 6 and the sleepers 3; and bonding means 40 for bonding the lower face 3b of the sleeper 3 and the upper plane 20a of the second insulation material 20. With this, the second insulation material 20 which maintains a predetermined shape can be easily fixed to a predetermined position of the sleeper 3 by bringing the second insulation material 20 into contact with the sleeper 3 faced to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fixing structure of a heat insulating material for fixing a plate-shaped heat insulating material under a floor, and a floor heat insulating structure.

  Conventionally, when constructing a building such as a house, a heat insulating material such as glass wool is fixed under the floor. Patent Document 1 supports a first heat insulating material disposed between large draws with one support and two heat insulating materials disposed between an intermediate portion between the large draws and an intermediate portion between the large draws. Insulation supports have been proposed.

  In the heat insulating material support shown in Patent Document 1, a horizontal portion having a substantially horizontal plane is connected to a lower end of a vertical portion adjacent to the side surface of the large pull. The thickness in the height direction between the upper surface of the horizontal portion and the large drawing is provided to be greater than the thickness in the height direction of the heat insulating material, and the heat insulating material is disposed and fixed between the upper surface of the horizontal portion and the large drawing. It was.

JP 2014-77332 A

  However, in the fixing structure of the heat insulating material using the conventional support tool, the flat horizontal portion of the support tool is provided directly under the large pull, and the insulation between the horizontal part and the lower surface of the large pull is insulated. The end of the heat insulating material was fixed by inserting the end of the material. For this reason, an operator must insert a heat insulating material into a narrow portion hidden under the large fork, or fix the heat insulating material at that position, and the work of placing and fixing the heat insulating material requires much labor. Insulating material could not be applied efficiently under the floor.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a fixing structure of a heat insulating material and a floor heat insulating structure that can be easily disposed under the floor and can be efficiently constructed.

  In order to achieve the above-mentioned object, the fixing structure for a heat insulating material according to the present invention is a plate-like material having a first heat insulating material filled in an inner space surrounded by a horizontal member of a floor set and a self-shaped retaining property. A second heat insulating material made of a heat insulating material and disposed below the inner space and the horizontal member; and an adhesive means for adhering the lower surface of the horizontal member and the upper surface of the second heat insulating material; It is characterized by having.

In this invention, the 2nd heat insulating material which consists of a plate-shaped heat insulating material which has self-shape-holding property is adhere | attached on the horizontal member by the adhesive means. Therefore, the second heat insulating material can be stably fixed in a predetermined shape at a predetermined position, and both the heat insulating property on the lower surface of the horizontal member and the lower side of the inner space are covered with the second heat insulating material to ensure the heat insulating property. it can.
Moreover, in this invention, the 2nd heat insulation maintained by the predetermined shape is arrange | positioned previously by arrange | positioning the adhesive means in the predetermined position of one or both of the upper surface of a 2nd heat insulating material, and the lower surface of a horizontal member. The material can be easily fixed simply by making the material face and abut against the horizontal member.
Therefore, a plate-shaped heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  Moreover, in order to achieve the said objective, the fixing structure of the heat insulating material which concerns on this invention is the board | plate which has the 1st heat insulating material with which the inner space enclosed by the horizontal member of the floor set was filled, and a self-shape-holding property. A second heat insulating material disposed under the inner space and the horizontal member, a lower surface of the first heat insulating material, a lower surface of the horizontal member, and an upper surface of the second heat insulating material. And an adhesive means for adhering to each other.

In the fixing structure for a heat insulating material according to the present invention, the upper surface of the second heat insulating material made of a plate-shaped heat insulating material having self-shaped retaining property and the lower surface of the horizontal member are adhesively bonded by an adhesive means, 2 The upper surface of the heat insulating material and the lower surface of the first heat insulating material are adhered and fixed by an adhesive means. For this reason, the second adhesive material is maintained in a predetermined shape by previously arranging the adhesive means at a predetermined position on one or both of the upper surface of the second heat insulating material facing the horizontal member and the lower surface of the horizontal member. The heat insulating material can be easily fixed simply by making the heat insulating material abut the predetermined position against the horizontal member.
Furthermore, by arranging adhesive means in advance at a predetermined position on one or both of the upper surface of the second heat insulating material and the lower surface of the first heat insulating material facing the first heat insulating material, It can be easily fixed simply by making the second heat insulating material face and abut.
Therefore, a plate-shaped heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  In addition, the fixing structure of the heat insulating material according to the present invention includes a first heat insulating material filled in the inner space surrounded by the horizontal member of the floor set, and a plate-shaped heat insulating material having self-shaping property, A second heat insulating material disposed under the inner space and the horizontal member; and an adhesive means for adhering the lower surface of the first heat insulating material and the upper surface of the second heat insulating material. It is characterized by that.

In the fixing structure of the heat insulating material according to the present invention, the upper surface of the second heat insulating material and the lower surface of the first heat insulating material, which are made of a plate-shaped heat insulating material having self-shaping property, are adhesively bonded by an adhesive means. It is fixed. Therefore, after the first heat insulating material is fixed in the inner space in advance, an adhesive means is previously disposed at a predetermined position on one or both of the upper surface of the second heat insulating material and the lower surface of the first heat insulating material. Thus, the second heat insulating material maintained in a predetermined shape can be easily fixed simply by making the second heat insulating material contact the first heat insulating material at a predetermined position.
Therefore, a plate-shaped heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  The floor heat insulating structure according to the present invention is a floor heat insulating structure using the above-described heat insulating material fixture, and between the base placed on the foundation and the large pull provided adjacent to the base, And the first heat insulating material disposed between the adjacent large draws and the upper surface are disposed in contact with the lower surface of the first heat insulating material, and are disposed in contact with the lower surface of the large draw. A second heat insulating material provided, and the second heat insulating material is supported by at least an upper surface of the second heat insulating material provided with the adhesive means.

  In this invention, the 2nd heat insulating material which consists of a plate-shaped heat insulating material which has a self-shape-holding property is adhesive-bonded by large adhesion etc. by the adhesive means. Therefore, the second heat insulating material can be stably fixed in a predetermined shape at a predetermined position, and both the heat insulating property on the lower surface of the horizontal member and the lower side of the inner space are covered with the second heat insulating material to ensure the heat insulating property. it can. Further, in the present invention, the plate-like heat insulating material can be easily disposed under the floor by a simple method in which an adhesive means is disposed in advance on the upper surface of the second heat insulating material and can be efficiently applied. it can.

  According to the floor heat insulating structure and the floor heat insulating structure according to the present invention, a plate-like heat insulating material having self-shaping property can be easily disposed under the floor and can be efficiently constructed.

It is a longitudinal cross-sectional view which shows the fixing structure of the heat insulating material by one embodiment of this invention. FIG. 2 is a partial perspective view showing a horizontal member before fixing in the fixing structure shown in FIG. 1. In the fixing structure shown in FIG. 1, it is a fragmentary perspective view which shows the heat insulating material before fixing. It is a longitudinal cross-sectional view which shows the fixing structure of the heat insulating material by a 1st modification. It is a longitudinal cross-sectional view which shows the fixing structure of the heat insulating material by a 2nd modification. It is a longitudinal cross-sectional view which shows the fixing structure of the heat insulating material by a 3rd modification.

  A heat insulating material fixing structure and a floor heat insulating structure according to an embodiment of the present invention will be described below with reference to FIGS.

In the present embodiment, a description will be given using an example in which a fixing structure of a heat insulating material is applied to a floor structure that is constructed by a so-called joist-less method (rigid floor method) as shown in FIG.
First, the joistless floor structure shown in FIG. 1 includes a foundation 1, a base 2, an overdraw 3, and a ventilation packing 4.

  The foundation 1 is made of reinforced concrete that is used in a building such as a general house, and is formed to rise upward from a ground (not shown). The rising upper surface 1 a is formed to be slightly larger than the width of the lower surface 2 b of the base 2. The structure of the foundation 1 may be either a solid foundation having a rising portion and a bottom plate (not shown) or a fabric foundation having a rising portion and a footing (not shown). In the floor portion to which the floor heat insulating structure according to the present embodiment is applied. No heat insulating material is provided on the inner and outer surfaces of the foundation 1.

  The base 2 is a horizontal member of a floor set and is made of a wooden square. It is configured to be fixed on the foundation 1 via bolts (not shown) planted on the upper surface 1a side of the foundation 1 at a predetermined interval. The base 2 is not limited to a wooden square, and may be made of hollow steel.

  The draw 3 is a horizontal member of a floor set, and is usually made of a wooden square member having a smaller cross-sectional shape than the base 2, and maintains a predetermined distance between the opposing bases 2, for example, a distance of 90 cm. Has been placed. In the example of FIG. 1, only one overdraw 3 is shown, but actually, a plurality of overdraws are provided between a base (not shown) provided to face the base 2. In addition, the large drawing 3 is not restricted to a wooden square, and may be made of hollow steel.

  In the same manner as the well-known drawing, the drawing 3 has both ends in the longitudinal direction fixed to a base (not shown) and a plurality of portions of the longitudinal lower surface 3b of the drawing 3 provided on the ground. It is configured to be held by a floor bundle placed on a stone.

  In the relationship between the base 2 and the large pull 3, the surface connecting the upper surface 2a of the base 2 and the upper surface 3a of the large pull 3 is configured to coincide with the same horizontal plane. Therefore, when a floor board (not shown) is placed and fixed between the upper surfaces of the base 2 and the large fork 3, the floor board can be kept on the same horizontal plane.

  The ventilation packing 4 is made of a flat plate made of synthetic resin or metal and having a thickness of about 2 to 3 cm, similar to the known ventilation packing, and between the upper surface 1a of the foundation 1 and the lower surface 2b of the base 2. Is provided. That is, since this ventilation packing 4 is provided between the foundation 1 and the base 2, the base 2 forms a kind of cat base.

Next, the fixing structure of this embodiment for fixing a heat insulating material to the floor set 5 in such a joistless floor structure will be described.
As shown in FIG. 1, the fixing structure includes a first heat insulating material 10, a second heat insulating material 20, and an adhesive unit 40.

  The 1st heat insulating material 10 is comprised with fiber type heat insulating materials, such as glass wool and rock wool, which are often used as a heat insulating material of floors and walls of buildings such as ordinary houses. That is, the first heat insulating material 10 is formed by intertwining fibers, includes a large number of air layers therein, has flexibility, is relatively lightweight, and has a so-called cotton shape. Therefore, it can be easily installed by filling the inner space 6 such as between the large draw 3.

  The 1st heat insulating material 10 is arrange | positioned by the thickness corresponding to the dimension of the height direction of the large drawing 3 between the base 2 and the large drawing 3. FIG. The first heat insulating material 10 has a thickness corresponding to the dimension in the height direction of the large drawing 3 between the large drawing 3 and the large drawing (not shown) adjacent to the large drawing 3 (the large drawing located on the opposite side of the base 2). It is arranged. A first heat insulating material similar to the first heat insulating material 10 disposed between the base 2 and the large pull 3 is also provided between the base (not illustrated) and the large pull (not illustrated) facing the base 2. Arranged.

  The second heat insulating material 20 is composed of a foamed plastic heat insulating material such as a bead method polystyrene foam, an extrusion method polystyrene foam, a rigid urethane foam, a phenol foam, etc., and the second heat insulating material 20 has excellent heat insulating properties, It is lightweight and has a plate shape with self-retaining properties. To have self-shape-holding property means that the intermediate portion has a rigidity enough to maintain a plate-like form while supporting the opposite edge portions. Even if the 1st heat insulating material 10 is mounted in the upper surface 20a, the 2nd heat insulating material 20 can be mounted, without a shape changing.

The second heat insulating material 20 is disposed under the large pull 3 of the floor set 5. The upper surface 20 a of the second heat insulating material 20 is disposed so as to contact the entire lower surface 10 b of the first heat insulating material 10 and to contact the entire lower surface 3 b of the large pull 3.
The thickness of the second heat insulating material 20 is determined so that the position of the lower surface 20b of the second heat insulating material 20 is located above the ventilation packing 4, and the second heat insulating material 20 impairs the air permeability of the ventilation packing 4. There is nothing. The thickness of the second heat insulating material 20 is preferably determined within a range where the thermal bridge of the large pull 3 can be prevented. In the second heat insulating material 20, the heat insulating layer is added to the first heat insulating material 10 by the thickness of the second heat insulating material 20, so that the heat insulating effect of the floor is further enhanced.
In addition, the thickness of the 2nd heat insulating material 20 in the said description is a thing about the case where the base 2 and the big drawing 3 are a specific magnitude | size, It can change according to the magnitude | size of the base 2 and the big drawing 3. However, the thickness of the second heat insulating material 20 is preferably 15 mm or more from the viewpoint of preventing thermal bridges, and is preferably 60 mm or less from the viewpoint of fit and workability.

Here, although the fiber-based heat insulating material constituting the first heat insulating material 10 is easy to fill between the large draws 3, it has low self-shape retaining property and hangs down by its own weight after a long period of time, and is loaded on the second heat insulating material 20. It takes.
Therefore, it is preferable that the foamed plastic heat insulating material constituting the second heat insulating material 20 has a bending strength defined by JIS K 7221-2 of 15 N / cm ² or more. Thereby, it does not change with respect to the droop of the 1st heat insulating material 10, it does not inhibit the air permeability by the ventilation packing 4 in the vicinity of the rising of the foundation 1, and generation | occurrence | production of the mold | fungi by moisture and a heat insulation fall can be suppressed. . In addition, since no gap is generated between the second heat insulating materials 20 installed under the draw 3 under other floors, the heat insulating property is not impaired.

Moreover, since the 2nd heat insulating material 20 contacts with the external air ventilated with the ventilation packing 4, what does not absorb the moisture contained in external air is preferable. Therefore, it is preferable that the water absorption amount defined by JIS A 9521 is 5 g / 100 cm ² or less, more preferably 3 g / 100 cm ² or less, and most preferably 2 g / 100 cm ² or less.
Thereby, it can prevent that mold | fungi generate | occur | produce in the heat insulating material 20 which absorbed moisture, or a thermal conductivity raises.
Moreover, since the 2nd heat insulating material 20 contacts with the external air ventilated with the ventilation packing 4, a thing with high moisture-permeable resistance is preferable. Therefore, JIS A 1324: 1995 moisture permeation resistance preferably at least 0.0027m ² · s · Pa / ng defined by (cup method), 0.0100m more preferably at least ^{2 · s · Pa / ng,} 0. 0200 m ² · s · Pa / ng or more is more preferable, and 0.0300 or more is most preferable. On the other hand, if the moisture permeation resistance is too high, the inside of the floor may be condensed due to the inability to permeate to the floor when the indoor humidity is high. Therefore, 0.0800 m ² · s · Pa / ng or less is preferable, 0.0600 m ² · s · Pa / ng or less is more preferable, and 0.0450 m ² · s · Pa / ng or less is most preferable.
Also, more heat resistance in view of preventing the thermal bridge defined by JIS A 1412-2 of the second heat insulating material 20 is preferably not less than ^{0.35m 2 · K / W, 0.60m} 2 · K / W or Preferably, 1.0 m ² · K / W or more is most preferable. On the other hand, from the viewpoint of fit and workability, 3.5 m ² · K / W or less is preferable, and 2.0 m ² · K / W or less is more preferable.

Moreover, when making the foamed plastic type heat insulating material which comprises the 2nd heat insulating material 20 into phenol foam, in order to improve bending strength and compressive strength more, a glass fiber nonwoven fabric, glass fiber mixed paper, craft paper, It is preferable to laminate a face material such as a nylon nonwoven fabric, a polyester nonwoven fabric, or a polypropylene nonwoven fabric.
The thermal conductivity specified by JIS A 1412-2 is preferably 0.020 W / m · K or less, more preferably 0.019 W / m · K or less, and most preferably 0.018 W / m · K or less.
The heat resistance is preferably not more than 0.75m ² · K / W or 3.33m ² · K / W, more preferably less 1.0m ² · K / W or more 2.5m ² · K / W.
Further, the moisture permeability resistance is preferably 0.0014 m ² · s · Pa / ng or more and 0.057 m ² · s · Pa / ng or less, and 0.0019 m ² · s · Pa / ng or more and 0.045 m ² · s · Pa. / Ng or less is more preferable.
The density is preferably from 15 kg / ^{m 3} or more 40 kg / ^{m 3} or less, 20 kg / ^{m 3} or more 35 kg / ^{m 3} and more preferably less, 27 kg / ^{m 3} or more 32 kg / ^{m 3} or less is most preferred.
Further, compressive strength is preferably at 10 N / cm ² or more, more preferably 13N / cm ² or more, 16N / cm ² or more is most preferable.
Furthermore, the bending strength is preferably 15N / cm ² or more, more preferably 45N / cm ² or more, 55N / cm ² or more is most preferable.
Further, the water absorption amount is preferably 5.0 g / 100 cm ² or less, more preferably 3.0 g / 100 cm ² or less, 2.0 g / 100 cm ² or less being most preferred.

The first heat insulating material 10 may be made of the same foamed plastic heat insulating material as the second heat insulating material 20. The lower the compressive strength of the foamed plastic-based heat insulating material, the easier it is to install it between the draws 3. On the other hand, the first heat insulating material 10 is required to have a certain degree of compressive strength in order to prevent the stepping-off after installation and the force when the first heat insulating material 10 is fitted between the pulls 3. Therefore, it is preferable that the compressive strength defined by JIS K 7220 is 5N / cm ² or more 25 N / cm ² or less, more preferably 10 N / cm ² or more 20 N / cm ² or less.
Since the compressive strength is proportional to the density, when the foamed plastic heat insulating material constituting the first heat insulating material 10 and the foamed plastic heat insulating material constituting the second heat insulating material 20 are of the same type, the second heat insulating material 20 is It is preferable that the density of the foamed plastic heat insulating material to be configured is higher than the density of the foamed plastic heat insulating material forming the first heat insulating material 10.

Furthermore, when the 1st heat insulating material 10 and the 2nd heat insulating material 20 contact | connect the wooden drawing 3, if the heat insulating material contains much moisture, there is a possibility that the wooden drawing 3 may corrode. The material 10 and the second heat insulating material 20 are preferably dried in advance in order to reduce the water content, and it is preferable to use a material to which moisture such as rain does not adhere at the construction site. Moreover, it is preferable that the moisture content of the 1st heat insulating material 10 and the 2nd heat insulating material 20 is lower than wooden large drawing. The water content of the wooden large draw can be measured with a wood moisture meter. Moreover, the moisture content of the 1st heat insulating material 10 and the 2nd heat insulating material 20 can be measured with the following method.
The mass of the heat insulating material cut into 200 mm in the width direction and 200 mm in the length direction is the initial mass m0. This heat insulating material is put into an oven at 104 ° C., and the mass after 48 hours is defined as m1, and the equilibrium water content (unit: mass%) is obtained by the following formula (1).
Equilibrium moisture content = (m0−m1) / m0 × 100 (1)

The adhesive unit 40 is for adhesively bonding the lower surface 3b of the draw 3 and the upper surface 20a of the second heat insulating material 20, and is an adhesive, a double-sided tape, or the like disposed between them.
The adhesive means 40 can be appropriately selected and used according to the material constituting the upper surface 20a of the second heat insulating material 20.

  For example, when the second heat insulating material 20 is phenol foam or the like, examples of the adhesive include rubber, acrylic, silicone, and urethane. Examples of the adhesive include a modified silicone resin system, a silicone resin system, a vinyl acetate resin system, an acrylic urethane resin system, a urethane resin system, a rubber system, and an epoxy resin system. In the case of a double-sided tape, acrylic type, butyl type, EPDM type, asphalt type, etc. are mentioned.

  The area to be adhesively bonded may be in a range that can support the load of the second heat insulating material 20 and the load applied to the second heat insulating material 20 by the adhesive bonding means 40. For example, the adhesive means 40 may be provided over the entire length of the large drawing 3 or may be provided at a plurality of positions at intervals in the longitudinal direction of the large drawing 3. In the present embodiment, the adhesive means 40 is disposed over the entire length of the lower surface 3b of the large pull 3 and substantially the entire length continuous in the longitudinal direction.

  When the plurality of second heat insulating materials 20 are arranged adjacent to each other under the floor set 5, the edge 20 c of each second heat insulating material 20 is adhesively bonded at the position of the adhesive means 40. preferable. In that case, it is good that the lower surface 3b of the large drawing 3 is not exposed by arrange | positioning in the state which edge 20c of the 2nd heat insulating material 20 adjacent to each other contact | adhered.

  Next, a construction procedure in which the heat insulating material fixing structure having the above configuration is applied to a joistless floor structure will be described.

First, as shown in FIG. 2, the adhesive means 40 is disposed on the lower surface 3 b of the large pull 3. What is necessary is just to apply | coat to the lower surface 3b in the case of an adhesive agent, and what is necessary is just to stick in the case of a double-sided tape.
Further, instead of disposing the adhesive means 40 on the lower surface 3b of the large pull 3, the adhesive means 40 is disposed at a predetermined position facing the lower surface 3b of the large pull 3 in the second heat insulating material 20, as shown in FIG. You may arrange.

In this state, the second heat insulating material 20 having the self-shape retaining property is inserted below the large drawing 3 and the inner space 6 and arranged at a predetermined position so that the lower surface 3b of the large drawing 3 and the upper surface of the second heat insulating material 20 are disposed. By abutting 20a against each other, the two are adhesively bonded.
In the installation work of the second heat insulating material 20, it is preliminarily determined according to the size between the base 2 and the large drawing 3, the size of the lower surface 3 b of the large drawing 3, the size between adjacent large drawing 3, and the like. It can be performed after appropriately dividing.

As shown in FIG. 1, the first heat insulating material 10 is filled into the inner space 6 between the base 2 and the large pull 3 after the second heat insulating material 20 is adhesively bonded. Since the second heat insulating material 20 is disposed under the inner space 6, the first heat insulating material 10 is disposed on the upper surface 20 a of the second heat insulating material 20 and is supported by the second heat insulating material 20.
In addition, you may fix the 1st heat insulating material 10 with the fixing pin provided in the base 2 and the large drawing 3. FIG.

  After the first heat insulating material 10 is disposed, a moisture-permeable and air-tight film is stretched on each of the upper surfaces 2a and 3a in the same manner as a well-known floor structure stretched on the upper surface 2a of the base 2 and the upper surface 3a of the pulling 3. And the construction is completed by stretching the flooring.

  According to the fixing structure of the heat insulating material and the floor heat insulating structure having the above-described configuration, the second heat insulating material 20 made of a plate-shaped heat insulating material having self-shape-retaining properties is pulled out by the adhesive means 40. Adhesive to. Therefore, the second heat insulating material 20 can be stably fixed in a predetermined shape at a predetermined position, and both the heat insulating property on the lower surface of the large pull 3 and the lower side of the inner space 6 are covered with the second heat insulating material 20 to ensure the heat insulating property. be able to.

And the upper surface 20a of the 2nd heat insulating material 20 which consists of a plate-shaped heat insulating material which has a self-shape-holding property, and the lower surface of the large drawing 3 are adhesive-bonded and fixed by the adhesive means 40. Therefore, the 2nd heat insulating material 20 maintained by the predetermined shape is arrange | positioned previously by arrange | positioning the adhesive means 40 in the predetermined position of one or both of the upper surface 20a of the 2nd heat insulating material 20, and the lower surface of the large drawing 3. Can be easily fixed simply by facing the large pull 3 against a predetermined position.
Therefore, a plate-shaped heat insulating material can be easily disposed under the floor and can be efficiently constructed.

Moreover, in this heat insulating material fixing structure, the adhesive means 40 can be used in common regardless of the thickness of the second heat insulating material 20 as long as the adhesive strength with respect to the load can be obtained. Therefore, the material used at the time of construction can be suppressed, and more efficient construction is possible.
Furthermore, in this heat insulating material fixing structure, since the second heat insulating material 20 continuously covers the large pull 3 from the inner space 6, the large pull 3 is unlikely to become a thermal bridge, and the heat insulating property can be improved.

  Next, a modified example will be described based on FIGS. In addition, the same code | symbol is attached | subjected to the component which has the same function as the component of embodiment mentioned above, Since description overlaps, detailed description is abbreviate | omitted.

(First modification)
In the first modification shown in FIG. 4, an adhesive means 40 for adhesively bonding the lower surface of the large pull 3 and the upper surface 20 a of the second heat insulating material 20 is provided, and the lower surface of the first heat insulating material 10. Adhesive means 40 for adhering the upper surface 20a of the second heat insulating material 20 to each other is provided. As this adhesive means 40, the thing similar to embodiment is used. Others are the same as that of the said embodiment.

Even with such a fixing structure of the heat insulating material of the first modified example, the same effect as that of the above embodiment can be obtained, and the plate-like second heat insulating material 20 can be easily arranged under the floor to improve efficiency. Can be constructed well.
In particular, in the first modification, the upper surface 20a of the second heat insulating material 20 and the lower surface of the large pull 3 are adhesively bonded by the adhesive means 40, and the upper surface 20a of the second heat insulating material 20 and the first heat insulating material 10 are bonded. The lower surface of each is fixed by being adhesively bonded by the adhesive means 40. Therefore, the first heat insulating material 10 and the second heat insulating material 20 are in close contact with each other, so that a gap is hardly generated, and the heat insulating property can be further improved.

(Second modification)
Next, in the 2nd modification shown by FIG. 5, the fixing pin 30 for fixing the 2nd heat insulating material 20 to the base 2 or the large drawing 3 is used with the adhesive means 40 of the said embodiment. .
The fixing pin 30 is made of metal or resin, and has a mounting portion 35 attached to the base 2 or the large pull 3 of the floor assembly 5 and a support projecting from the mounting portion 35 to place and support the second heat insulating material 20. Part 36.

The attachment portion 35 has a bent strip-shaped vertical piece 31 and an upper piece 32. The upper piece 32 is fixed to the upper surface 2 a of the base 2 or the upper surface 3 a of the overdraw 3, and the vertical piece 31 is arranged along the side surface of the base 2 or the overdraw 3.
A lower piece 33 projects substantially horizontally from the lower end of the vertical piece 31 toward the inner space 6 side, and the second heat insulating material 20 is supported on the upper surface.

Even in such a fixing structure of the heat insulating material of the second modified example, the same effect as the above embodiment can be obtained, and the second heat insulating material 20 can be easily disposed under the floor and can be efficiently constructed. .
In particular, in the second modification, the fixing pin 30 is used together with the adhesive means 40, so even if a larger load is applied from the second heat insulating material 20, the second heat insulating material 20 is attached to the floor assembly 5. Can be kept fixed.

(Third Modification)
Next, in the 3rd modification shown by FIG. 6, the 1st heat insulating material 10 is being fixed to the large drawing 3 or the base 2 in the state with which the inner space 6 was filled. For this reason, the lower surface of the first heat insulating material 10 and the upper surface 20a of the second heat insulating material 20 are not bonded to each other by the adhesive means between the lower surface of the large pull 3 and the upper surface 20a of the second heat insulating material 20. The adhesive means 40 is adhesively bonded. Therefore, the second heat insulating material 20 is fixed to the large pull 3 or the base 2 through the first heat insulating material 10. Others are the same as that of the said embodiment.
In this case, it is preferable that the first heat insulating material 10 is fixed with fixing pins provided on the base 2 and the large pull 3. The fixing pin 30 is made of metal or resin, and has a mounting portion 35 attached to the base 2 or the large pull 3 of the floor assembly 5 and a support projecting from the mounting portion 35 to place and support the first heat insulating material 10. The attachment part 35 has a bent strip-shaped vertical piece 31 and an upper piece 32. The vertical piece 31 preferably has substantially the same length as the thickest one of the thicknesses of the large pull 3 or the first heat insulating material 10.

Even with the fixing structure of the heat insulating material according to the third modified example, it is possible to obtain the same effect as that of the above embodiment.
That is, after the first heat insulating material 10 is fixed in the inner space 6 in advance, the adhesive unit 40 is previously provided at a predetermined position on one or both of the upper surface 20 a of the second heat insulating material 20 and the lower surface of the first heat insulating material 10. If it arrange | positions, it can fix easily only by making the 2nd heat insulating material 20 maintained by the predetermined shape oppose and contact the 1st heat insulating material 10 at a predetermined position. Therefore, the 2nd heat insulating material 20 can be easily arrange | positioned under a floor, and can be constructed efficiently.

  As mentioned above, although embodiment of the fixing structure of the heat insulating material which concerns on this invention, and floor heat insulation structure were demonstrated, this invention is not limited to said embodiment and modification, As long as it does not deviate from the meaning, it is suitably. It can be changed. In addition, the constituent elements in the above-described embodiments can be appropriately replaced with known constituent elements without departing from the gist of the present invention.

  For example, in each of the embodiments described above, the base 2 and the fork 3 are illustrated as the horizontal members of the floor set, but the horizontal members are not particularly limited. The horizontal members may be floor beams, joists, lintels, etc., and may be beams, girders, trunk differences, etc. of floor assemblies of the second and higher floors.

  In addition, for example, on the foundation and the large fork, it may be applied to the heat insulating structure of the floor constructed by the joist method in which the joist is provided in the direction orthogonal to the large fork. In this case as well, as in the above embodiment, The 1st heat insulating material 10 is arrange | positioned between a base and large drawing, and between large drawing, and the 2nd heat insulating material 20 is arrange | positioned so that it may contact | abut to the whole lower surface of a large drawing using the adhesive means 40. be able to.

1 foundation 1a upper surface 2 foundation (horizontal material)
2a Upper surface 2b Lower surface 3 Large draw (horizontal material)
3a upper surface 3b lower surface 4 ventilation packing 5 floor assembly 6 inner space 10 first heat insulating material 20 second heat insulating material (plate-shaped heat insulating material)
20a Upper surface 20b Lower surface 30 Fixing pin 40 Adhesive means

Claims (4)

A first heat insulating material filled in the inner space surrounded by the horizontal members of the floor assembly;
A second heat insulating material made of a plate-shaped heat insulating material having a self-holding property, and disposed under the inner space and the horizontal member;
A heat insulating material fixing structure comprising: an adhesive means for adhesively bonding the lower surface of the horizontal member and the upper surface of the second heat insulating material. A first heat insulating material filled in the inner space surrounded by the horizontal members of the floor assembly;
A second heat insulating material made of a plate-shaped heat insulating material having a self-holding property, and disposed under the inner space and the horizontal member;
A fixing structure for a heat insulating material, comprising: an adhesive means for adhering the lower surface of the first heat insulating material, the lower surface of the horizontal member, and the upper surface of the second heat insulating material. A first heat insulating material filled in the inner space surrounded by the horizontal members of the floor assembly;
A second heat insulating material made of a plate-shaped heat insulating material having a self-holding property, and disposed under the inner space and the horizontal member;
A fixing structure for a heat insulating material, comprising adhesive means for adhering a lower surface of the first heat insulating material and an upper surface of the second heat insulating material. A floor heat insulating structure using the fixing structure for a heat insulating material according to any one of claims 1 to 3,
A first heat insulating material disposed between the base placed on the foundation and the large fork adjacent to the base, and between the adjacent large forks;
An upper surface is disposed in contact with the lower surface of the first heat insulating material, and a second heat insulating material disposed in contact with the lower surface of the large pull, and
The floor heat insulating structure, wherein the second heat insulating material is supported at least on the upper surface of the second heat insulating material with the adhesive means.

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