JP2018168675A - Heat insulator fixture, and floor insulation structure - Google Patents

Abstract

To provide a heat insulator fixture capable of easily disposing a heat insulator under the floor and facilitating the work.SOLUTION: The heat insulator fixture includes: a fitting part 35 which is attached to a sleeper 3 of a floor construction 5; and a support part 36 formed on a lower face 3b of the sleeper 3 protruding downward from the fitting part 35 to support a second insulation material 20 which has self-shape retention and is disposed under the floor. The support part 36 includes: a placement part 37 for placing the second insulation material 20; and a guide part 38 which is formed with a downward inclination toward the front end from the placement part 37.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat insulating material fixture 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 a conventional heat insulating material support, a flat plate-like horizontal portion is provided directly under the large drawing, and the end of the heat insulating material is inserted into the space between the horizontal portion and the lower surface of the large drawing. The end of the heat insulating material was fixed. 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 heat insulating fixture 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 object, the heat insulation fixture according to the present invention is provided with a mounting portion that is attached to the horizontal member of the floor assembly, and projects downward from the attachment portion to the lower surface of the horizontal member, A support part for supporting a plate-like heat insulating material disposed under the floor with a self-holding property from below, and the support part is a mounting part for mounting the plate-like heat insulating material; And a guide portion provided at a downward slope from the placement portion to the distal end side.

  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 the heat insulating material fixing device fixed to the base and the large fork respectively.

In the present invention, since the support portion that supports the plate-like heat insulating material projects from the mounting portion attached to the horizontal member toward the lower side of the lower surface of the horizontal member, the heat insulating material is provided on the lower surface of the horizontal member. It is possible to ensure heat insulation on the lower surface of the horizontal member.
And in this invention, since the support part which supports a plate-shaped heat insulating material from the downward direction has a mounting part and a guide part, between the lower surface of the horizontal member in a guide part is the protrusion front end side. Expanded and arranged. This makes it easy to move the edge of the insulation to the position above the guide by moving along the lower surface of the horizontal member when placing the plate-like heat insulating material on the lower surface of the horizontal member and supporting it on the support. In addition, the heat insulating material can be easily guided to the mounting portion by the guide portion. Therefore, the heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  Further, in the heat insulating material fixture according to the present invention, the support portion is formed so as to be elastically deformable downward with respect to the mounting portion, and is separated from the horizontal member arranged opposite to the vertical direction. The dimension may be smaller than the thickness of the heat insulating material disposed below the material.

In the heat insulating material fixture according to the present invention, the support portion is formed to be elastically deformable downward with respect to the mounting portion, and is disposed opposite to the lower surface of the horizontal member at a distance equal to or less than the thickness of the plate-shaped heat insulating material. Further, the heat insulating material can be pressed against the lower surface of the horizontal member by the elasticity of the support portion by supporting the heat insulating material on the support portion. Therefore, it is possible to stably support the heat insulating material without performing an operation for bringing the heat insulating material into close contact with the lower surface of the horizontal member.
And if a support part can be elastically deformed, even if it is a plate-shaped heat insulating material from which thickness differs, it is possible to support to a support part stably.

  In addition, in order to achieve the above object, a heat insulating material fixing tool according to the present invention is provided with an attaching portion attached to a horizontal member of a floor set, and projecting downward from the attaching portion to a lower surface of the horizontal member. And a support portion that supports a plate-like heat insulating material disposed under the floor with a self-shape retaining property from below, and the support portion is elastically deformable downward with respect to the mounting portion. The distance from the horizontal member formed and opposed to the vertical member is set to be smaller than the thickness of the heat insulating material arranged below the horizontal member.

In the heat insulating material fixing tool according to the present invention, the support portion that supports the plate-shaped heat insulating material from below is projected from the attachment portion attached to the horizontal member toward the lower side of the horizontal member, A heat insulating material can be arrange | positioned on the lower surface of a horizontal member, and the heat insulation in the lower surface of a horizontal member can be ensured.
In the present invention, when the support portion is formed so as to be elastically deformable downward with respect to the attachment portion, and is disposed to face the lower surface of the horizontal member at a distance equal to or less than the thickness of the plate-like heat insulating material, the heat insulating material Is supported by the support portion, the plate-like heat insulating material can be pressed against the lower surface of the horizontal member by the elasticity of the support portion. As a result, when the heat insulating material is arranged on the lower surface of the horizontal member and supported by the support portion, it is not necessary to perform an operation of closely attaching the heat insulating material to the lower surface of the horizontal member, and the plate-shaped heat insulating material can be stably provided. Can be supported. Therefore, a plate-shaped heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  In addition, in order to achieve the above object, a heat insulating material fixing tool according to the present invention is provided with an attaching portion attached to a horizontal member of a floor set, and projecting downward from the attaching portion to a lower surface of the horizontal member. And a support portion for supporting a plate-like heat insulating material disposed under the floor with self-shape retaining property from below, and the support portion is fixed by being inserted into an end portion of the heat insulating material from a side surface. It is characterized by having a possible pointed insert.

In the present invention, since the support portion that supports the plate-like heat insulating material projects from the mounting portion attached to the horizontal member toward the lower side of the lower surface of the horizontal member, the heat insulating material is provided on the lower surface of the horizontal member. It is possible to ensure heat insulation on the lower surface of the horizontal member.
And in this invention, since a support part has a pointed insertion piece, when arrange | positioning a plate-shaped heat insulating material in the lower surface of a horizontal member and making it support a support part, a heat insulating material is horizontally mounted. By simply moving along the lower surface of the material, the insertion piece can be inserted into the end portion of the plate-like heat insulating material, and the end portion of the heat insulating material can be easily supported by the support portion. Therefore, the heat insulating material can be easily disposed under the floor and can be efficiently constructed.

  Moreover, the heat insulating material fixing tool which concerns on this invention WHEREIN: The said insertion piece may be formed in the flat plate shape in alignment with the lower surface of the said horizontal member.

  In this case, if the insertion piece has a flat plate shape along the lower surface of the horizontal member of the floor assembly, the insertion piece is inserted and fixed to the side surface of the plate-like heat insulating material. The end of the plate-like heat insulating material can be stably supported with a wide area.

  According to the heat insulating material fixture and the floor heat insulating structure according to the present invention, a plate-shaped heat insulating material having self-shaped retaining 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 using the 1st fixing pin by 1st embodiment of this invention. It is a perspective view of the 1st fixing pin shown in FIG. It is a longitudinal cross-sectional view of the 1st fixing pin shown in FIG. (A)-(c) is a figure which shows the procedure which fixes a plate-shaped heat insulating material using a 1st fixing pin. It is a figure which shows the example of arrangement | positioning of a 1st fixing pin, Comprising: It is the top view which looked at the 1st heat insulating material from upper direction. It is a figure which shows the other example of arrangement | positioning of a 1st fixing pin, Comprising: It is the top view which looked at the 1st heat insulating material from upper direction. It is a longitudinal cross-sectional view which shows the 2nd fixing pin by a 1st modification. It is a longitudinal cross-sectional view which shows the 3rd fixing pin by a 2nd modification. It is a longitudinal cross-sectional view which shows the 4th fixing pin by a 3rd modification. It is a longitudinal cross-sectional view which shows the 5th fixing pin by a 4th modification. It is a fragmentary longitudinal cross-section which shows the fixing structure using the 6th fixing pin by 2nd embodiment. It is a perspective view of the 6th fixing pin shown in FIG. It is a longitudinal cross-sectional view which shows the 7th fixing pin in 3rd embodiment, Comprising: (a) is a figure of the state before bending, (b) is a figure of the state which folded the 1st lower piece, (c) is the figure of FIG. It is a figure of the state which broke down 2 lower piece. It is a figure which shows the example of arrangement | positioning which uses the 7th fixing pin shown in FIG. 13, Comprising: (a) is the top view which looked at the 2nd heat insulating material from upper direction, (b) is the sectional view on the AA line shown to (a). FIG. It is a figure which shows the other example of arrangement | positioning which uses the 7th fixing pin shown in FIG. 13, Comprising: (a) is the top view which looked at the 2nd heat insulating material from upper direction, (b) is AA shown to (a). It is line sectional drawing. It is a figure which shows the 8th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is the CC arrow directional view shown to (a). It is a figure which shows the 9th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is the DD arrow line view shown to (a). It is a figure which shows the 10th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is the EE arrow directional view shown to (a). It is a figure which shows the 11th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is the FF arrow directional view shown to (a). It is a figure which shows the 12th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is the GG arrow directional view shown to (a). It is a figure which shows the 13th fixing pin in 4th embodiment, Comprising: (a) is the perspective view, (b) is a HH arrow directional view shown to (a).

  Hereinafter, a heat insulating material fixture and a floor heat insulating structure according to an embodiment of the present invention will be described with reference to the drawings.

[First embodiment]
Hereinafter, a heat insulating material fixture and a floor heat insulating structure according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
In this embodiment, a heat insulating material is fixed to a floor structure having no joist as shown in FIG. 1, that is, a floor structure constructed by a so-called joist-less method (rigid floor method) using the heat insulating material fixing tool of this embodiment. An example will be described.
First, the joist-less floor structure shown in FIG. 1 includes a foundation 1, a floor set 5 provided on the foundation 1 with a foundation 2 and an overdraw 3, and a foundation 1 and a foundation 2. The ventilation packing 4 is provided.

  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 the floor set 5 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 the floor set 5 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. Are arranged. 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 floor set 5 is formed by joining the base 2 and the fork 3 at predetermined intervals in the vertical and horizontal directions. Between the base 2 and the large fork 3 and between the large forks 3, there is provided an inner space 6 surrounded on all sides by one or both of the base 2 and the large fork 3. In the present embodiment, as will be described later, the first heat insulating material 10 is filled in the inner space 6 of the floor assembly 5, and the second heat insulating material 20 is disposed under the large pull 3 of the floor assembly 5.

  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, a heat insulating material fixing structure using the heat insulating material fixing tool of the present embodiment on such a joistless floor structure will be described.
As shown in FIG. 1, this structure includes a first heat insulating material 10, a second heat insulating material 20, and a first fixing pin 30 a that is a heat insulating material fixing tool of the present embodiment.

  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. Having the self-shape retaining property is sufficient if the intermediate portion has rigidity enough to maintain a plate-like form while supporting the peripheral side. 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 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.
Further, heat resistance in view of preventing the thermal bridge defined by JIS A 9521 of the second heat insulating material 20 is preferably not less than 0.35m ² · K / W, 0.60m more preferably at least ² · K / W, 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 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)

Next, the 1st fixing pin 30a which is a heat insulating material fixing tool is a member for fixing the 2nd heat insulating material 20 to the base 2 and the large drawing 3 of the floor assembly 5, as shown in FIG. 1 thru | or FIG. .
The first fixing pin 30a is made of a hard material such as metal or resin. If the first fixing pin 30a is made of resin, corrosion can be prevented and it is easy to prevent a heat bridge. When phenol foam is used as the second heat insulating material 20, it is preferable to use the first fixing pin 30a made of resin. Moreover, when using the metal 1st fixing pins 30a, in order to prevent rust, it is preferable that the pH of the 2nd heat insulating material 20 shall be 3-6.

The 1st fixing pin 30a is provided with the attaching part 35 attached to the large pull 3, and the support part 36 which supports the 2nd heat insulating material 20 from the downward direction.
The attachment portion 35 has a bent strip-shaped vertical piece 31 and an upper piece 32. The thickness is determined within a range in which a floor board (not shown) can be stretched on the base 2 or the fork 3 without hindrance. The width is equal to that of the support portion 36.

  The length of the vertical piece 31 is set in accordance with the thickness of the first heat insulating material 10 or the sum of the height dimension of the large heat insulating material 3 and the thickness of the second heat insulating material 20, and the lower end is the lower surface of the large heat insulating material 3. It is formed in such a length that it can protrude below 3b and the support portion 36 can be disposed at an appropriate position. In the example of FIG. 1, the thickness of the first heat insulating material 10 is equal to the large pull 3, and the thickness of the second heat insulating material 20 is the difference in height dimension between the base 2 and the large pull 3.

The upper piece 32 is formed by being bent at a right angle from the upper end portion of the vertical piece 31. The protruding length of the upper piece 32 from the vertical piece 31 is determined so that the vertical piece 31 can be sufficiently locked to the upper surface 2 a of the base 2 or the upper surface 3 a of the large pull 3.
A claw 34 for integrally biting the upper piece 32 into the upper surface 2 a of the base 2 or the upper surface 3 a of the pulling 3 is formed integrally with the upper piece 32.

The support portion 36 has a lower piece 33 that protrudes from the vertical piece 31 of the attachment portion 35 toward both sides in the horizontal direction. The lower piece 33 has a first lower piece 33a and a second lower piece 33b that have a width extending in a substantially horizontal direction and are formed in a cantilever shape. The width of the lower piece 33 is determined within a range in which the lower surface 20b of the second heat insulating material 20 can be sufficiently placed.
The first lower piece 33 a protrudes from the lower end portion of the vertical piece 31 toward the lower side of the lower surface 3 b of the large pull 3 and is formed by being bent in the same direction as the upper piece 32. The second lower piece 33 b protrudes from the lower end portion of the vertical piece 31 toward the inner space 6 side, and is formed by bending in the direction opposite to the upper piece 32.

The first lower piece 33a and the second lower piece 33b are formed in a bent shape, and a placement portion 37 for placing the plate-like second heat insulating material 20 and a direction from the placement portion 37 toward the front end side, respectively. And a guide portion 38 provided at a downward slope.
In this embodiment, the 1st lower piece 33a and the 2nd lower piece 33b, and the vertical piece 31 are connected in the connection position which protruded below. The mounting portion 37 is provided above the connection position, and is formed in a convex shape upward. This top portion of the convex shape becomes a mounting portion that contacts the second heat insulating material 20. It is preferable that the top surface of the top portion is disposed to face the bottom surface 3b of the large pull 3 at a distance equal to or less than the thickness of the second heat insulating material 20.

Since the guide portion 38 has a downward slope, the distance between the upper surface of the first lower piece 33a of the support portion 36 and the lower surface 3b of the large pull 3 is more distant from the tip portion side.
Therefore, as shown in FIG. 3, at the tip 38 a of the first lower piece 33 a, the space between the lower surface 3 b of the large pull 3 is always wider than the thickness of the second heat insulating material 20, and the second heat insulating The edge 20c of the material 20 can be easily inserted to a position above the guide portion 38.

  Further, in the present embodiment, the support portion 36 is formed to be elastically deformable downward with respect to the attachment portion 35, and the placement portion 37 has a lower distance than the thickness L <b> 2 of the second heat insulating material 20 and the lower surface of the large pull 3. It faces 3b. That is, the mounting portion 37 of the support portion 36 is set such that the distance L1 from the large pull 3 that is opposed to the vertical portion is smaller than the thickness L2 of the second heat insulating material 20 that is disposed below the large pull 3. ing. When mounting the second heat insulating material 20, the distance between the upper surface of the mounting portion 37 and the lower surface 3 b of the large pull 3 can be expanded more than the thickness of the second heat insulating material 20.

  On the other hand, as for the 1st fixing pin 30a for fixing the 2nd heat insulating material 20 to the base 2, only the 2nd lower piece 33b is provided in the support part 36, as shown in FIG. Others are the same as the 1st fixing pin 30a for fixing the 2nd heat insulating material 20 to the large drawing 3. FIG.

  Next, a procedure for fixing the heat insulating material to the joistless floor structure using the first fixing pin 30a and constructing the heat insulating material fixing structure will be described.

As shown in FIG. 1, first, the first fixing pins 30 a are respectively attached to the base 2 and the large pull 3. In attaching the first fixing pin 30 a to the base 2, the second lower piece 33 b of the first fixing pin 30 a is disposed on the inner space 6 side, and the upper piece 32 is fixed to the upper surface 2 a of the base 2. Further, in attaching the first fixing pin 30a to the large pull 3, the first lower piece 33a is disposed on the large pull 3 side, the second lower piece 33b is disposed on the inner space 6 side, and the upper piece 32 is large pulled. 3 is fixed to the upper surface 3a.
The interval at which the first fixing pin 30a is attached to the base 2 and the large pull 3 is determined within a range in which the lower piece 33 can sufficiently place the lower surface 20b of the second heat insulating material 20.

After the first fixing pins 30a are attached to the base 2 and the large pull 3, respectively, as shown in FIG. 3, the second heat insulating material 20 is arranged so as to be substantially along the lower surface 3b of the large pull 3, and the large size from the edge side. It is moved along the lower surface 3 b of the pull 3.
As shown in FIG. 4 (a), the edge of the second heat insulating material 20 is guided in contact with the guide portion 38 of the first lower piece 33a.

As shown in FIG. 4B, the edge of the second heat insulating material 20 slides along the guide portion 38 and is guided to the top surface of the top portion of the placement portion 37. At this time, the first lower piece 33a is lowered by elastic deformation, so that the space between the upper surface of the mounting portion 37 and the lower surface 3b of the large pull 3 is expanded, and the edge of the second heat insulating material 20 is the mounting portion 37. Is disposed between the upper surface of the upper plate 3 and the lower surface 3 b of the large pull 3.
In this state, the edge of the second heat insulating material 20 is sandwiched between the placing portion 37 and the large pull 3 and is pressed against the lower surface 3b of the large pull 3 by the elastic force from the first lower piece 33a.

And as shown in FIG.4 (c), the 2nd heat insulating material 20 is arrange | positioned in a predetermined position by moving the edge of the 2nd heat insulating material 20 to the innermost part of the 1st lower piece 33a.
In the installation work of the second heat insulating material 20, depending on the size between the base 2 and the large drawing 3, the size of the lower surface 3b of the large drawing 3, the size between the adjacent large drawings 3, and the like. It can be performed after appropriately dividing in advance.

  As shown in FIG. 1, after the second heat insulating material 20 is installed, the first heat insulating material 10 is filled into the inner space 6 between the base 2 and the large pull 3. 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.

  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.

Here, the example of arrangement | positioning of the 1st fixing pin 30a is demonstrated as a heat insulation structure of a floor.
As shown in FIGS. 5 and 6, at least four first fixing pins 30 a are used for the first heat insulating material 10. In the arrangement examples shown in FIGS. 5 and 6, for each large drawing 3 that contacts the four sides of the first heat insulating material 10, two portions (a portion surrounded by a two-dot chain line indicated by reference numeral E) on one side of the large drawing 3. The position where the first fixing pin 30a is provided is set. FIG. 5 shows an arrangement in which a total of four first fixing pins 30a are provided in each two of the two large forks 3 facing each other. FIG. 6 shows an arrangement configuration in which one first fixing pin 30 a is provided for each of the four large guides 3 surrounding the first heat insulating material 10.
In addition, since the support part 36 (lower piece 33a, 33b) has projected the both sides of the vertical piece 31, the 1st fixing pin 30a of the 1st fixing pin 30a of this embodiment is installed only in the one side 3c of the large drawing 3. There is an advantage that the number of the first fixing pins 30a and the trouble of installation can be reduced.

  According to the first fixing pin 30a as described above, the support portion 36 that supports the second heat insulating material 20 is provided so as to protrude from the attachment portion 35 attached to the large pull 3 toward the lower surface 3b of the large pull 3. Therefore, the 2nd heat insulating material 20 can be arrange | positioned on the lower surface 3b of the large drawing 3, and the heat insulation in the lower surface 3b of the large drawing 3 can be ensured.

And in this embodiment, the support part 36 has the mounting part 37 which mounts the 2nd heat insulating material 20, and the guide part 38 provided in the downward slope from the mounting part 37 to the front end side. Yes. Therefore, the space between the guide portion 38 and the lower surface 3b of the pullout 3 is arranged so as to expand toward the projecting tip side. Thus, when the second heat insulating material 20 is disposed on the lower surface 3b of the large pull 3 and supported by the support portion 36, the edge of the second heat insulating material 20 is slid along the lower surface 3b of the large pull 3 so that the edge of the second heat insulating material 20 is guided. It is possible to easily insert up to a position above 38, and the second heat insulating material 20 can be easily guided to the mounting portion 37 by the guide portion 38.
Therefore, the plate-like second heat insulating material 20 having the self-shape retaining property can be easily disposed under the floor and can be efficiently constructed.

Further, according to the first fixing pin 30 a of the present embodiment, the support portion 36 is formed to be elastically deformable downward with respect to the attachment portion 35, and the large pull 3 at a distance equal to or less than the thickness of the second heat insulating material 20. Is disposed opposite to the lower surface 3b. Therefore, by supporting the second heat insulating material 20 on the support portion 36, the second heat insulating material 20 can be pressed against the lower surface 3 b of the large pull 3 by the elasticity of the support portion 36. Thereby, it is not necessary to perform the operation | work which makes the 2nd heat insulating material 20 closely_contact | adhere to the lower surface 3b of the large drawing 3, and the 2nd heat insulating material 20 can be supported stably.
And if the support part 36 can be elastically deformed, even if it is the 2nd heat insulating material 20 from which thickness differs, it is possible to support to the support part 36 stably.

  Next, a modified example will be described with reference to 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 modified example shown in FIG. 7, the dimension L1 between the first lower piece 33a of the support portion 36 and the lower surface 3b of the large pull 3 in the second fixing pin 30b (heat insulating material fixture) is the second heat insulating material. The dimension is set to be approximately the same as the thickness L2 of the material 20. The second fixing pin 30b is formed as a rigid body that does not elastically deform. Others are the same as that of the said embodiment.
Even with the second fixing pin 30b of the first modification, it is possible to obtain the same effect as that of the above embodiment. For example, by moving the second heat insulating material 20 substantially along the lower surface 3b of the large pull 3, the second heat insulating material 20 can be easily arranged on the placement portion 37 of the first lower piece 33a. Therefore, the plate-like second heat insulating material 20 can be easily disposed under the floor and efficiently constructed.

(Second modification)
The second modification shown in FIG. 8 is the same as the above embodiment except that the shape of the support portion 36 in the third fixing pin 30c (insulating material fixture) is different. The convex shape of the support portion 36 of the third fixing pin 30 c is formed in an arc shape that protrudes upward from the connection portion with the vertical piece 31.
Even with the third fixing pin 30c of the second modified example, it is possible to obtain the same effects as those of the above embodiment. For example, by moving the second heat insulating material 20 substantially along the lower surface 3b of the large pull 3, the second heat insulating material can be easily attached to the arc-shaped mounting portion 37 by the arc-shaped guide portion 38 of the first lower piece 33a. 20 can be easily arranged. Therefore, the plate-like second heat insulating material 20 can be easily disposed under the floor and efficiently constructed.

(Third Modification)
The third modification shown in FIG. 9 is the same as the above embodiment except that the shape of the support portion 36 in the fourth fixing pin 30d (heat insulating material fixture) is different. In the support portion 36 of the fourth fixing pin 30d, a placement portion 37 that extends from the vertical piece 31 along the lower surface 3b of the pullout 3, and a guide portion 38 that is provided with a downward slope from the placement portion 37 toward the tip. ,have. In this example, the interval between the upper surface of the flat mounting portion 37 and the lower surface 3 b of the large pull 3 is provided in the same manner as the second heat insulating material 20.
Even with the fourth fixing pin 30d of the third modification, it is possible to obtain the same function and effect as the above embodiment. For example, by moving the second heat insulating material 20 substantially along the lower surface 3b of the large pull 3, the second heat insulating material 20 is easily guided to the flat placement portion 37 by being guided by the guide portion 38 of the first lower piece 33a. Can be placed. Therefore, the plate-like second heat insulating material 20 can be easily disposed under the floor and efficiently constructed.

(Fourth modification)
The fourth modification shown in FIG. 8 is the same as the above embodiment except that the shape of the support portion 36 in the fifth fixing pin 30e (heat insulating material fixture) is different. In the support portion 36 of the fifth fixing pin 30e, the first lower piece 33a and the second lower piece 33b are formed while the first lower piece 33a and the second lower piece 33b are formed upwardly from the vertical piece 31 to the tip side. However, both can be elastically deformed downward, and the projecting tip side can be greatly expanded.
Even in the fifth fixing pin 30d of the fourth modified example, the first lower piece 33a and the second lower piece 33b of the fifth fixing pin 30e can be elastically deformed to greatly expand the projecting tip side. If it is, the 2nd heat insulating material 20 can be arrange | positioned easily. Therefore, the plate-like second heat insulating material 20 can be easily disposed under the floor and efficiently constructed.

[Second Embodiment]
Next, the heat insulating material fixture by 2nd embodiment of this invention is demonstrated using FIG.11 and FIG.12.
The second embodiment is different from the first embodiment in the shape and structure of the support portion 36. Specifically, in the sixth fixing pin 30f (insulating material fixture) according to the second embodiment, the first lower piece 33c and the second lower piece 33d of the support portion 36 each include the insertion piece 39 having a pointed shape. Yes. Specifically, the entire first lower piece 33c and the second lower piece 33d have a flat plate shape along the lower surface 3b of the large pull 3, and have a pointed shape that tapers from the vertical piece 31 toward the tip side. ing.
Further, the upper surface of the insertion piece 39 is disposed opposite to the lower surface 3 b of the large pull 3 at a distance smaller than the thickness of the second heat insulating material 20. Others are the same as in the first embodiment.

  In order to construct a fixing structure for a heat insulating material using such a sixth fixing pin 30f, the sixth fixing pin 30f is attached to the base 2 and the large pull 3 in the same manner as in the first embodiment. And the 2nd heat insulating material 20 is arrange | positioned so that the lower surface 3b of the large drawing 3 may be followed, and it is moved along the lower surface 3b of the large drawing 3 from an edge side. Accordingly, as shown in FIG. 11, the insertion piece 39 is inserted into the end portion of the second heat insulating material 20 from the side surface, and the end edge of the second heat insulating material 20 comes into contact with the vertical piece 31. That is, the end portion of the second heat insulating material 20 is fixed to the insertion piece 39 and the second heat insulating material 20 is disposed at a predetermined position, whereby the heat insulating material fixing structure is constructed.

  According to the sixth fixing pin 30f as described above, the support portion 36 that supports the second heat insulating material 20 protrudes from the attachment portion 35 attached to the large pull 3 toward the lower side of the lower surface 3b of the large pull 3. Therefore, the second heat insulating material 20 can be disposed on the lower surface 3b of the large pull 3, and the heat insulating property on the lower surface 3b of the large pull 3 can be ensured.

And since the support part 36 has the pointed insertion piece 39, when arrange | positioning the 2nd heat insulating material 20 in the lower surface 3b of the large pull 3, and making it support the support part 36, the 2nd heat insulating material 20 Can be easily supported along the lower surface 3 b of the large pull 3 by inserting the insertion piece 39 into the end portion of the second heat insulating material 20 and supporting the end portion of the second heat insulating material 20 on the support portion 36. it can.
Therefore, the plate-like second heat insulating material 20 can be easily disposed under the floor and can be efficiently constructed.

  In the sixth fixing pin 30 f, after the second heat insulating material 20 is disposed, the portion exposed to the outside can be reduced by inserting the support portion 36 into the second heat insulating material 20. Therefore, it can prevent that the 6th fixing pin 30f becomes a thermal bridge, and can improve heat insulation more.

  Further, in the sixth fixing pin 30f of the present embodiment, since the insertion piece 39 has a flat plate shape along the lower surface 3b of the large pull 3 of the floor assembly 5, the insertion piece 39 is replaced with the second heat insulating material 20. In the state of being inserted and fixed to the side surface, the end portion of the second heat insulating material 20 can be stably supported by the wide area of the insertion piece 39.

  Further, in the sixth fixing pin 30f, the insertion piece 39 is provided so as to be opposed to the lower surface 3b of the large drawing 3 at a distance smaller than the thickness of the second heat insulating material 20, so that the second heat insulating material 20 is drawn large. 3 is in close contact with the lower surface 3b of the steel plate 3 to improve heat insulation. Moreover, whatever thickness the second heat insulating material 20 is, it can be fixed using the common sixth fixing pin 30f, and the working efficiency can be further improved.

[Third embodiment]
Next, the heat insulating material fixture by 3rd embodiment of this invention is demonstrated using drawing.
The seventh fixing pin 30g (insulating material fixture) shown in FIG. 13A is formed so that the support portion 36 (the pair of lower pieces 33a and 33b) and the vertical piece 31 of the attachment portion 35 can be separated. That is, by bending the lower pieces 33a and 33b with respect to the vertical piece 31 as shown in FIGS. 13B and 13C, for example, at the position of the two-dot chain cut line L shown in FIG. The lower pieces 33a and 33b can be broken. FIG. 13B shows a state (reference numeral 30 gA) in which the first lower piece 33 a on the right side of the paper is folded and only the second lower piece 33 b is left. FIG. 13C shows a state (reference numeral 30 gB) in which the second lower piece 33 b on the left side of the paper is folded and only the first lower piece 33 a is left.

  Here, the example of arrangement | positioning which uses the 7th fixing pin 30g as a heat insulation structure of a floor is demonstrated. 14A and 14B show two types of fixing pins in which a fixing pin 30gA with the second lower piece 33b remaining on the base 2 is used, and the lower piece is folded with respect to the large pull 3 facing the base 2. 30 gA and 30 gB are alternately arranged. 15 (a) and 15 (b) are examples in which the fixing pins 30aB, in which only the first lower piece 33a is left, are arranged, and there are a total of four in each of two opposing large pulls 3. The arrangement configuration is provided with the fixing pins 30aB.

[Fourth embodiment]
Next, the heat insulating material fixture by 4th embodiment of this invention is demonstrated using drawing. Here, an example of a configuration in which the rigidity is increased so that the support portion of the fixing pin does not hang down due to the weight of the first heat insulating material 10 and the second heat insulating material 20 will be described with reference to FIGS.

16 (a) and 16 (b), the eighth fixing pin 30h (insulating material fixture) is configured such that the lower pieces 33a and 33b of the support portion 36 are bent downward on both sides of the center portion 33C in the width direction. It has become. In the tenth fixing pin 30i (insulating material fixing tool) shown in FIGS. 17A and 17B, the lower pieces 33a and 33b of the support portion 36 are bent upward on both sides of the center portion 33C in the width direction. It has a configuration. The eighth fixing pin 30h and the ninth fixing pin 30i have a shape in which the lower end 31a of the vertical piece 31 is bent in accordance with the bent shape of the support portion 36, and is joined to the support portion 36.
In this case, the lower pieces 33a and 33b of the support part 36 can be increased in rigidity by being bent in the direction perpendicular to the fold line direction depending on the weight of the heat insulating material. It is possible to suppress sagging due to the weight of the material.

  Further, the tenth fixing pin 30j (insulating material fixing tool) shown in FIGS. 18A and 18B is only a portion where the support portion 36 and the vertical piece 31 are joined in the above-described eighth fixing pin 30h. The lower pieces 33a and 33b of the support portion 36 are configured to bend downward on both sides of the center portion 33C in the width direction. And the flat part 36a is formed in the both ends of the support part 36. As shown in FIG. The eleventh fixing pin 30k (insulating material fixture) shown in FIGS. 19A and 19B is only the portion where the support portion 36 and the vertical piece 31 are joined in the ninth fixing pin 30i described above. The lower pieces 33a and 33b of 36 are bent upward on both sides of the center portion 33C in the width direction. Further, flat portions 36 a are formed at both ends of the support portion 36.

20 (a) and 20 (b) has a flat surface in which both ends of the support portion 36 are bent downward in the eleventh fixing pin 30k described above. A bent portion 36b is formed. In this case, the bent portion 36b can be applied to the tenth fixing pin 30j.
In the tenth fixing pin 30j, the eleventh fixing pin 30k, and the twelfth fixing pin 301, the rigidity of the support portion 36 can be increased, the sag due to the weight of the heat insulating material can be suppressed, and the support portion 36 It becomes easy to place a heat insulating material on the flat part 36a and the bending part 36b formed at both ends.

  Furthermore, in the above-described eighth to twelfth fixing pins 30h, 30i, 30j, 30k, and 30l, by increasing the thickness of the bent portions of the support portion 36 on both sides of the center portion 33C of the lower piece 33. You may make it raise rigidity. For example, the thickness of the support portion 36 can be expanded so as to protrude upward as shown in FIGS.

In addition, the thirteenth fixing pin 30m (heat insulating material fixing tool) shown in FIGS. 21A and 21B has a hanging rib 33D extending along the center in the width direction of the lower surface of the lower piece 33 (33a, 33b). Is provided and has a support portion 36 having a T-shaped cross section.
In the fourteenth fixing pin 30m, since the lower piece 33 is reinforced by the hanging rib 33D and the rigidity is increased, the above-described drooping due to the weight of the heat insulating material can be suppressed.

As mentioned above, although the heat insulating material fixing tool and the embodiment of the floor heat insulating structure according to the present invention have been described, the present invention is not limited to the above-described embodiments and modifications, and may be appropriately changed without departing from the spirit thereof. Is possible. 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 each of the above embodiments, the first lower pieces 33a and 33c and the second lower pieces 33b and 33d of the support portion 36 are described as protruding from the vertical piece 31 symmetrically. Instead, the first lower pieces 33a and 33c and the second lower pieces 33b and 33d can be formed in different shapes and different properties.

  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 first heat insulating material 10 can be disposed between the base and the large fork and between the large fork, and the second heat insulating material 20 can be disposed so as to be in contact with the entire lower surface of the large fork using a fixing means. .

  In addition, the first heat insulating material 10 may not be installed between the large draws 3 and only the second heat insulating material 20 may be installed under the large draws 3. In this case, the space between the large draws 3 is floor insulated. It can be used as a piping space such as piping or water supply / drainage piping, or as a space such as an electric wiring or air conditioning duct.

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)
30a-30m Fixing pin (insulating material fixture)
31 Vertical piece 32 Upper piece 33 Lower piece 33a, 33c First lower piece 33b, 33d Second lower piece 34 Claw 35 Mounting portion
36 Supporting part 37 Placement part 38 Guide part 39 Insertion piece

Claims (6)

A mounting portion to be attached to the horizontal member of the floor assembly;
A support portion that projects from the mounting portion toward the lower side of the lower surface of the horizontal member and supports a plate-like heat insulating material that is provided under the floor and has a self-holding property;
The support part is
A mounting section for mounting the plate-like heat insulating material;
And a guide part provided at a downward slope from the mounting part to the tip side.   The support portion is formed so as to be elastically deformable downward with respect to the mounting portion, and is spaced apart from the horizontal member arranged opposite to the vertical direction. The heat insulating material fixture according to claim 1, wherein the heat insulating material fixing device is set to a smaller size. A mounting portion to be attached to the horizontal member of the floor assembly;
A support portion that projects from the mounting portion toward the lower side of the lower surface of the horizontal member and supports a plate-like heat insulating material that is provided under the floor and has a self-holding property;
The support portion is formed so as to be elastically deformable downward with respect to the mounting portion, and is spaced apart from the horizontal member arranged opposite to the vertical direction. A heat insulation fixture characterized by being set to a smaller size. A mounting portion to be attached to the horizontal member of the floor assembly;
A support portion that projects from the mounting portion toward the lower side of the lower surface of the horizontal member and supports a plate-like heat insulating material that is provided under the floor and has a self-holding property;
The said support part has a pointed insertion piece which can be inserted and fixed to the edge part of the said heat insulating material from a side surface, The heat insulating material fixing tool characterized by the above-mentioned.   The heat insulating material fixture according to claim 4, wherein the insertion piece is formed in a flat plate shape along a lower surface of the horizontal member. A floor heat insulating structure using the heat insulating material fixture according to any one of claims 1 to 5,
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 by the heat insulating material fixing members fixed to the base and the large fork respectively.

Images