JP2007239218A - Floor heat insulation structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a floor heat insulation structure which sufficiently ensures the workability thereof, and at the same time improves the heat insulation performance thereof. <P>SOLUTION: The floor heat insulation structure 10 is constructed by laying a floor substrate panel 11 on a plurality of metallic sleepers 2 arranged at intervals, without interposing floor joists therebetween, and arranging floor heat insulation materials 12 on a lower side of the floor substrate panel 11 at locations between the mutually adjacent sleepers 2. Then a high-strength heat insulation material 13 formed of a foamed resin molded body with a low expansion ratio and a density of 50 to 400 kg/m<SP>3</SP>, is arranged between each sleeper 2 and the floor substrate panel 11, and bearers 14 for bearing the floor heat insulation material 12 are arranged on each sleeper 2 at longitudinal intervals thereof. Each bearer 14 has an upper face portion 20 arranged along an upper surface of the sleeper 2; a pair of side face portions 21 extending downward from both side edges of the upper face portion 20 to be arranged along both side faces of the sleeper 2; and bearing portions 22 protruding sideways from lower edges of the respective side face portions 21 to bear side portions of the floor heat insulation materials 12 arranged between the sleepers 2, from below. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a floor insulation structure in a wooden building.

  As a floor structure of a wooden building, a floor structure by a so-called joist-less construction method, in which a floor base panel made of plywood is directly laid on a metal pulling without using joist, can simplify the construction work, Moreover, it has been attracting attention recently because it can set a large indoor space. In addition, as a floor insulation structure using the joistless construction method, in order to prevent a thermal bridge between the metal pulling and the floor base panel, a heat insulation material for preventing a long thermal bridge made of expanded polystyrene having a foaming ratio of 2 times. A floor insulation structure is proposed in which a floor base panel is laid on the upper side of a metal puller without using joists on the upper side, and a floor insulation material is laid on the lower side of the floor base panel between adjacent pullers. (For example, refer to Patent Document 1).

  On the other hand, as a support for fixing and supporting the floor heat insulating material between the joists, the upper surface part arranged along the upper surface of the joists, the pair of side parts arranged along the both sides of the joists, and the side from the side parts And a support portion that supports the side portion of the floor heat insulating material from below, a protrusion protruding upward is formed on the support portion, and the protrusion is bitten into the floor heat insulating material. A support made of a metal plate or plastic that can be fixedly supported with respect to the joist has been proposed (for example, see Patent Document 2).

  Further, as a support of another configuration that supports the floor heat insulating material between the joists, an upper surface portion arranged along the upper surface of the joists, and a pair of side portions arranged along both side surfaces of the joists, And a support part that protrudes sideways from the side part and supports the side part of the floor insulation from the lower side, and the tip side of the support part is inclined obliquely upward, and the elasticity of the support part is used to There has also been proposed a support that is configured so that the heat insulating material is brought into close contact with the floor base panel to enhance the heat insulating performance (see, for example, Patent Document 3).

JP 2006-2545 A Japanese Utility Model Publication No. 53-139110 JP-A-6-57932

  Unlike the case where the floor insulation material is arranged between joists, the floor insulation material is received from the lower side when the floor insulation material is arranged between the metal pullings as in the floor insulation structure described in Patent Document 1. Since there is no structural material, it is necessary to nail and fix the floor insulation to the floor base panel in advance. However, it is extremely difficult to accurately fix the floor insulation material to the floor base panel so that the side surface of the floor insulation material is in close contact with the large pull because construction errors will inevitably occur in the span between the large pulls. There is a problem that a gap is formed between the large pull and the floor heat insulating material, and the heat insulation performance is lowered by this gap.

  On the other hand, the support tools described in Patent Documents 2 and 3 are used when constructing a floor insulating material between wooden joists of a general wooden building, and are applied to a joist-less construction method using metal pulling. Application is not expected. Moreover, in the support device described in Patent Document 2, a protrusion that bites into the floor heat insulating material is formed on the support portion, and this protrusion is for restricting the movement of the floor heat insulating material in the horizontal direction, It does not attach the floor insulation to the floor foundation panel.

  The objective of this invention is providing the floor heat insulation structure which can improve heat insulation performance, ensuring sufficient workability.

  The present inventor has intensively studied the floor insulation structure of a wooden building by the joist-less method using a metal pull, and in order to improve the floor insulation performance as much as possible, the heat between the pull and the floor base material panel The present invention has been completed by paying attention to the need to block the bridge, eliminate the gap between the pulling and the floor insulation, and eliminate the gap between the floor insulation and the floor base panel.

The floor heat insulating structure according to the present invention is a floor in which a floor base panel is laid without interposing a joist on a metal pulling, and a floor heat insulating material is disposed below the floor base panel between adjacent pullings. a heat insulating structure, placing the large pull and density between the underfloor panel made of foamed resin molded body of low expansion ratio is 50kg / m ³ ~400kg / m ³ high strength heat insulating material, the floor insulation material As a support tool for supporting the high-strength heat insulating material and the large pull, a top surface portion, a pair of side surfaces disposed along both side surfaces of the large pull, and from the side surface portion to the side A support that protrudes and has a support portion that supports the side portion of the floor heat insulating material from below is provided at intervals in the length direction of the pulling.

  When constructing this floor heat insulating structure, first, with the free end side of the side surface portion of the support device facing downward, the support device is attached from the upper side to the large pull, and the upper surface of the support portion The upper part and both side surface parts are arranged along the upper surface and both side surfaces of the large pull, and the support is set with a space in the length direction with respect to the large pull. Next, place both sides of the floor insulation on the support part of the support set in the adjacent large pull, lay the floor insulation without gaps between the large pulls, Over the entire length of the pull, lay construction so that no gap is formed between the upper part of the side surface of the floor insulation. Next, to prevent floor noise, leave a gap of about 5 mm or less between adjacent floor base panels, and lay the floor base panel on the upper side of the floor insulation and high-strength insulation without any gaps. Fix the floor base panel on the large pull by fixing with a screw etc. to the pull. Next, a floor finishing material is laid on the floor base panel and fixed to the floor base panel with nails or the like, and a floor heat insulating structure is constructed.

  In this floor heat insulating structure, the support can be fitted and attached to the large pull from the upper side, so that the assembling property of the support for the large pull can be sufficiently secured. In addition, construction of high-strength heat insulating material can be performed easily because it is performed from the upper side. Also, for floor heat insulating material, the floor heat insulating material is inserted between adjacent large pulls from the upper side, By placing the part on the support part, it can be laid and constructed easily. In addition, since a high-strength heat insulating material made of a foamed resin molding with a low expansion ratio is placed between the metal pull and the floor base panel, the thermal bridge between the metal pull and the floor base panel is blocked. In addition, it can improve the heat insulation performance of the floor insulation structure, and solves the problem of condensation that occurs near the bottom of the floor base panel and the metal pull-out due to the cold air in the room under summer when the floor is humid. it can.

  Here, in a preferred embodiment, the width of the high-strength heat insulating material is set to be larger than the width of the large pull, and the floor heat insulating material is brought into close contact with the high-strength heat insulating material by utilizing elastic deformation of the floor heat insulating material. is there. With this configuration, the floor insulation material facing the high-strength insulation material is elastically deformed in the width direction with the floor insulation material installed between the adjacent pulling and the high-strength insulation material, thereby forming a high-strength insulation material. Since the floor insulation is in close contact with the gap, the thermal bridge through the gap between the high-strength insulation and the floor insulation can be reliably blocked.

  It is also preferable that the width of the high-strength heat insulating material is set to be larger than the width of the large pulling, and the positioning protrusions extending downward along the side surface of the large pulling are formed on both sides of the high-strength heat insulating material. It is a form. If comprised in this way, since a positioning protrusion is arrange | positioned at the both sides of a large pull by carrying out an external fitting set of a support tool, a support tool can be easily positioned and set with respect to the width direction of a large pull. be able to.

  A protrusion is formed on the upper surface of the support part, and the floor heat insulating material is brought into close contact with the floor base panel using the elastic deformation of the floor heat insulating material at a position corresponding to the protrusion, and the receiving part of the floor heat insulating material in the support part Is set to a position higher than the base portion of the support portion, and the floor heat insulating material is brought into close contact with the floor base panel using the elastic deformation of the support portion. In this case, the heat insulating performance of the floor heat insulating structure can be improved by bringing the floor heat insulating material into close contact with the floor base panel. In addition, since it is not necessary to form protrusions on the floor insulation material side, a flat plate-shaped general-purpose product with no irregularities on the outer surface can be adopted as the floor insulation material. It is possible to prevent the problem that the heat insulating material becomes bulky or the protrusions formed on the floor heat insulating material are damaged.

  It is also a preferred embodiment that a double-sided tape is attached to the contact surface of the support with the large pull and the support is fixed to the large pull using the double-sided tape. If comprised in this way, the trouble that a support tool will shift | deviate to the length direction of a large pull can be prevented reliably at the time of laying construction of a floor heat insulating material, etc.

  A slit extending from the upper surface side or the lower surface side of the floor heat insulating material to the middle portion in the thickness direction is formed over the entire length on at least one side portion of the floor heat insulating material, and the side portion of the floor heat insulating material is formed using the slit. It is also a preferred embodiment that the side surface of the floor heat insulating material is brought into close contact with the side surface of the high-strength heat insulating material and the side surface of the large pull by elastic deformation. With this configuration, it is possible to absorb the squeezing of the span due to the construction error of the large pulling by the elastic deformation of the floor heat insulating material, and to prevent the formation of a gap between the floor heat insulating material and the high strength heat insulating material. The heat insulation performance of the heat insulation structure can be improved.

  It is also a preferred embodiment that the support portion extends from the slit toward the center portion of the floor heat insulating material. If slits are formed in the floor insulation, the strength and rigidity of the side of the floor insulation will inevitably decrease, so if a large load is applied to the floor insulation, such as when an operator steps off the floor insulation after construction. It is also conceivable that the floor insulation is damaged at the position corresponding to the slit. In this invention, since the support part is extended to the center part side of the floor insulation from the slit, the floor insulation is received by the support in the part where the slit is not formed, and a relatively large load is applied to the floor. Even when it acts on the heat insulating material, the floor heat insulating material can be prevented from being damaged.

  According to the floor heat insulating structure according to the present invention, the support, the high-strength heat insulating material, the floor heat insulating material, and the floor base panel can be constructed from the upper side with respect to the large pull, so that the workability of the floor heat insulating structure can be improved. . In addition, a high-strength heat insulating material made of a foamed resin molding with a low expansion ratio, placed between the metal pull and the floor base panel, blocks the thermal bridge between the metal pull and the floor base panel. In addition to improving the heat insulation performance of the floor insulation structure, it is possible to solve the problem of condensation that occurs near the bottom of the floor panel and the metal pull-out due to the cold air in the indoor cooling under the humid floor in summer. .

  Here, if the width of the high-strength heat insulating material is set to be larger than the large width, the floor heat insulating material can be closely contacted with the high-strength heat insulating material, and the space between the high-strength heat insulating material and the floor heat insulating material can be reduced. Heat insulation performance can be improved by blocking the thermal bridge through the gap.

  Further, if the width of the high-strength heat insulating material is set to be larger than the width of the large pulling, and a positioning protrusion that extends downward along the side surface of the large pulling is formed on both sides of the high-strength heat insulating material, Positioning and setting can be easily performed in the width direction of the large pull.

  When a protrusion is formed on the upper surface of the support part or the receiving part of the floor heat insulating material in the support part is set at a position higher than the base part of the support part, a high-strength heat insulating material, a floor heat insulating material, and a floor base panel Therefore, the heat insulation performance of the floor heat insulation structure can be improved and the occurrence of problems such as floor noise can be significantly reduced. In addition, a flat board-like general-purpose product with no irregularities on the outer surface can be adopted as the floor insulation, which can set the production cost of the floor insulation low, and compared with the case where protrusions etc. are formed on the floor insulation Thus, the transportability and storage properties can be improved.

  If a double-sided tape is attached to the surface of the support that comes into contact with the large pull, the support will be displaced in the length direction of the large pull due to contact with the support during installation of floor insulation. Can be effectively prevented.

  When a slit extending from the upper surface side or the lower surface side of the floor heat insulating material to the middle part in the thickness direction is formed over the entire length on at least one side of the floor heat insulating material, the span insulation is caused by a large pulling error. It can be absorbed by elastic deformation of the material, and further, the formation of a gap between the floor heat insulating material and the high strength heat insulating material can be prevented, and the heat insulating performance of the floor heat insulating structure can be improved.

  Extending the support part to the center side of the floor insulation from the slit prevents damage to the floor insulation even when a relatively large load is applied to the floor insulation after the installation of the floor insulation. it can.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a longitudinal sectional view of a main part of a floor set 1 in a first floor portion of a wooden building. In this floor assembly 1, the large pull 2 is constituted by a rectangular tube member having a hollow closed cross section formed by forming a metal plate such as a steel plate or an aluminum plate having a thickness of 0.6 mm to 2.0 mm into a square cross section, The steel is placed on the soil concrete 3 at a set interval while the middle part in the length direction of the draw 2 is placed horizontally above the soil kunk cleat 3 with a certain distance therebetween. The bundle 4 is supported so that the height can be adjusted. However, a wooden bundle can be used instead of the steel bundle 4. Further, in the present embodiment, the case where the present invention is applied to the bundling floor set 1 will be described. The present invention can be applied to a floor set having an arbitrary configuration. Furthermore, the present invention can be similarly applied to the floor set of the upper floor part of two or more floors.

The floor heat insulating structure 10 of the bundled floor set 1 is constructed by a joist-less construction method, and as shown in FIGS. 1 and 2, on a plurality of metal pullouts 2 arranged at intervals. A floor heat insulating structure 10 in which a floor base panel 11 is laid without interposition of joists, and a floor heat insulating material 12 is disposed below the floor base panel 11 between adjacent large pulls 2. the high-strength heat insulating material 13 having a density between subfloor panel 11 is made of a foamed resin molded article of the low expansion ratio is 50kg / m ³ ~400kg / m ³ are arranged, the support 14 for supporting the floor heat insulating material 12, A floor finishing material 15 made of a wooden flooring material or the like is laid and fixed on the upper side of the floor foundation panel 11.

  The floor base panel 11 may be a woody system such as a particle board having a thickness of 20 mm to 30 mm, or a synthetic resin system, as long as the floor base panel 11 has strength rigidity that can compensate for a decrease in floor strength rigidity due to omission of joists. Any configuration can be adopted. In the present embodiment, a plywood having a thickness of 24 mm is employed so that sufficient strength and rigidity of the floor can be obtained.

  As shown in FIGS. 1 to 5, the support tool 14 extends downward from the upper surface portion 20 disposed along the upper surface of the large pull 2 and both end portions of the upper surface portion 20. A pair of side surface portions 21 arranged along the side, and a support that is provided so as to protrude laterally from the lower end of the side surface portion 21 and supports the side portion of the floor heat insulating material 12 disposed between the draws 2 from below. Part 22. The support 14 can be manufactured by bending a metal plate, or can be manufactured by injection molding a synthetic resin material.

  The thickness and width of the support tool 14 is 0.5 to 2.0 mm so that strength and rigidity capable of supporting the floor insulation 12 can be obtained while minimizing the amount of metal plate or resin material used. And the width is set to 5 to 50 mm. Although the thickness and width of the upper surface portion 20, the side surface portion 21, and the support portion 22 in the support tool 14 are set to the same thickness and width in the present embodiment, they can be set to different thicknesses and widths.

  The length of the side surface portion 21 in the vertical direction is such that the floor heat insulating material 12 is placed on the support portion 22 and the high strength heat insulating material 13 is placed on the large pull 2 and the upper surface of the floor heat insulating material 12 is high strength. The length is set so that the upper surface of the heat insulating material 13 becomes the same height, and the floor base panel 11 is laid on the upper side of the high-strength heat insulating material 13, and a gap is provided between the floor heat insulating material 12 and the floor base panel 11. Is not formed.

  A double-sided tape 23 is attached in advance to the lower surface of the upper surface portion 20, and the double-sided tape 23 is attached to the upper surface of the large pull 2 so that the support 14 can be fixed to the large pull 2.

  The high-strength heat insulating material 13 is composed of a foamed resin molded body of a strip that is placed on the upper side of the full length 2, and the upper and lower surfaces of the high-strength heat insulating material 13 are configured flat.

  The thickness of the high-strength heat insulating material 13 is preferably set to 5 mm or more and 40 mm or less in order to block the thermal bridge between the draw 2 and the floor base panel 11 while making the indoor space as wide as possible.

  The width of the high-strength heat insulating material 13 should be set to the same width as the large pull 2 or slightly larger than the width of the large pull 2 so that no gap is formed between the floor heat insulating material 12 and the high-strength heat insulating material 13. become. When the width is set to be slightly larger than the large pull 2, the floor heat insulating material 12 is compressed and deformed at a position corresponding to the high strength heat insulating material 13, for example, as shown in FIG. Since it is in close contact with the heat insulating material 13, a gap is formed between the floor heat insulating material 12 and the high-strength heat insulating material 13 even when the gap between the adjacent large drawing 2 slightly fluctuates due to construction errors of the large drawing 2. Can be reliably prevented. However, if the difference between the width of the large pull 2 and the width of the floor heat insulating material 12 is too large, the loadability of the floor heat insulating material 12 is deteriorated. Therefore, the distance W between the side surfaces of the large pull 2 and the floor heat insulating material 12 is It is preferable to set to 0.5 to 3.0 mm. In addition, the side surface of the high-strength heat insulating material 13 is configured with a gently tapered surface that extends downward from the entire height or from the upper end to the middle in the height direction, and at least the lower portion of the high-strength heat insulating material 13 is overdrawn 2. It can also be configured wider. If comprised in this way, while being able to improve the loadability of the floor heat insulating material 12, at least the lower half part of the high-strength heat insulating material 13 can be press-contacted to the floor heat insulating material 12, and heat insulation performance can be improved.

Although the high-strength heat insulating material 13 can also be comprised with the foaming molding which consists of polyolefin resin materials, such as a polypropylene, since it is excellent in heat insulation, strength rigidity, and cost performance, it is extrusion foam molding and a metal mold | die. What was comprised by the foaming polystyrene-type resin molded object shape | molded by the in-mold foam molding etc. which used can be utilized suitably. The foam density of the foam constituting the high-strength heat insulating material 13 is 50 kg / m ^{3 to} 400 kg / m ³ , preferably 70 kg / m in order to effectively block the thermal bridge between the draw 2 and the floor base panel 11. m ^{3 to} 300 kg / m ³ is set. In the present embodiment, the high-strength heat insulating material 13 is composed of a foamed polystyrene-based resin molded body having a foam density of 100 kg / m ³ .

  The floor heat insulating material 12 is a flat foam, glass wool, rock wool or resin made of polystyrene resin foam, polypropylene resin foam, polyethylene resin foam, polyurethane foam, phenol resin foam or the like. It can be comprised with the heat insulating material which consists of arbitrary materials, such as a fiber-type plate-shaped body which consists of fibers. In particular, a foam made of a polystyrene-based resin formed by extrusion foam molding or in-mold foam molding using a mold is suitable because it has excellent heat insulation, strength rigidity, and cost performance.

Density of the floor insulation material 12 in order to sufficiently ensure the insulation performance of the floor insulation structure ^{10, 10kg / m 3 ~40kg /} m 3, preferably will be set to ^{12kg / m 3 ~35kg / m 3} . Moreover, although the thickness of the floor heat insulating material 12 can be set arbitrarily, it is set to 15 mm or more and 120 mm or less in order to ensure sufficient heat insulation performance while suppressing an increase in manufacturing cost. The vertical and horizontal lengths of the floor heat insulating material 12 are set to a length that fits between the adjacent large draws 2 so that the floor heat insulating material 12 can be laid and arranged between the large draws 2 without a substantial gap. .

  As shown in FIGS. 1 and 2, a tapered surface 35 is formed at the lower end portion of the side portion of the floor heat insulating material 12 in order to ensure the loadability of the floor heat insulating material 12 between the adjacent large pulls 2. Further, a slit 36 extending from the upper surface side to the middle portion in the thickness direction is formed on the side portion of the floor heat insulating material 12, and the slit 36 promotes compressive deformation of the side portion of the floor heat insulating material 12 to be adjacent. In a state where the floor heat insulating material 12 is loaded between the large pulling 2, the side surface of the floor heat insulating material 12 is in close contact with the high strength heat insulating material 13 and the side surface of the large pulling 2, and the high strength heat insulating material 13 and the large pulling 2 and the floor heat insulating material. Generation | occurrence | production of the clearance gap between the materials 12 is prevented, and it is comprised so that the heat insulation performance of the floor heat insulation structure 10 can be improved. However, the tapered surface 35 may be omitted as shown in FIG. 6, for example. In addition, the slit 36 can be formed so as to extend from the lower surface side of the floor heat insulating material 12 to the middle portion in the thickness direction, and as shown in FIG. 6, the slit extends from the upper surface side to the middle portion in the thickness direction. It is also possible to combine 36 and the slit 36 extending from the lower surface side to the middle part in the thickness direction. Moreover, although it is preferable to provide such a slit 36 for improving the adhesiveness of the floor heat insulating material 12 to the high-strength heat insulating material 13 and the large pull 2, the floor heat insulating material as shown in FIG. The material 12 can also be used. Furthermore, when providing the slit 36, as shown in FIG. 6, the support part 22 of the support tool 14 is extended to the center part side of the floor heat insulating material 12 rather than the slit 36, and a relatively large load is applied on the floor heat insulating material 12. It is preferable that the floor heat insulating material 12 is not damaged in the slit 36 even if the above acts. Furthermore, it is preferable to set the width and depth of the slit 36 as appropriate in consideration of the load acting on the floor heat insulating material 12.

  Next, the construction method of the floor insulation structure 10 will be described. As shown in FIG. 2, first, the release paper of the double-sided tape 23 is peeled off, and then the support 14 is removed from the upper side of the metal pulling 2. A high-strength heat insulating material 13 is laid on the upper side of the support 14 and the large pull 2 while being fixed in a fitting shape.

  Next, both side portions of the floor heat insulating material 12 are placed on the support portion 22 in the support 14 of the adjacent large pull 2. At this time, the side surface of the floor heat insulating material 12 is in close contact with the high strength heat insulating material 13, the side surface portion 21 of the support 14, and the side surface of the large pull 2 without substantially gaps, and the upper surface of the high strength heat insulating material 13 and the floor heat insulating material 12. The upper surface is disposed in the same plane. However, after the floor heat insulating material 12 is laid, the high-strength heat insulating material 13 can be set on the upper side of the support 14 and the large pull 2.

  Next, as shown in FIG. 1, a gap of about 5 mm or less is provided between adjacent floor foundation panels 11 to prevent floor noise, and the floor foundation is substantially above the floor insulation 12 and the high-strength insulation 13. The panel 11 is laid and the floor base panel 11 is fixed to the large pull 2 with screws 16. In this way, after the floor foundation panel 11 is laid and fixed, the floor finishing material 15 is fixed to the upper side with a nail or the like, and the floor heat insulating structure 10 is constructed.

  Thus, in this floor heat insulation structure 10, since the high-strength heat insulating material 13 which consists of a foaming resin molding of a low foaming ratio is arrange | positioned between the metal drawing 2 and the floor base panel 11, the thermal bridge between both Can be blocked by the high-strength heat insulating material 13 to improve the heat insulating performance of the floor heat insulating structure 10. Moreover, since the floor heat insulating material 12 is in close contact with the high-strength heat insulating material 13, it is possible to prevent a decrease in heat insulating performance due to a gap formed between the support portion 22 and the floor heat insulating material 12. Furthermore, since the high-strength heat insulating material 13 can be composed of a strip-like member, the transportability and storage property of the high-strength heat insulating material 13 can be sufficiently secured, and the support 14 is also a small and narrow width, Can be boxed compactly.

  Here, another embodiment in which the configuration of the floor heat insulating structure 10 is partially changed will be described. The same members as those in the above embodiment are given the same reference numerals, and detailed description thereof is omitted.

(1) As shown in FIG. 7, as the support tool 14 </ b> A, an upper surface of the support portion 22 formed with a projection 40 having a generally oval shape in plan view that protrudes upward is used as in the floor heat insulating structure 10 </ b> A shown in FIG. 8. In addition, in a state where the floor heat insulating material 12 is placed on the protrusion 40, the upper surface of the floor heat insulating material 12 is disposed at a position higher than the upper surface of the high strength heat insulating material 13 by a height h, as shown in FIG. The floor heat insulating material 12 is inserted into the protrusion 40 so that the upper surface of the floor heat insulating material 12 and the upper surface of the high-strength heat insulating material 13 are flush with each other. The height of the protrusion 40, the distance between the upper surface of the high-strength heat insulating material 13 and the upper surface of the support portion 22, and the thickness of the floor heat insulating material 12 can be set so that the gap α is formed between the upper surfaces.

  In this floor heat insulating structure 10A, the height H of the protrusion 40 is set to 2 mm to 10 mm, and the gap α is set to 0 mm to 8 mm. Further, the number of the protrusions 40 and the area of the upper surface of the protrusion 40 are such that the floor heat insulating material 12 is almost the same as the protrusion 40 only by placing the floor heat insulating material 12 on the protrusion 40, that is, by the weight of the floor heat insulating material 12 alone. When the floor base panel 11 is placed on the floor heat insulating material 12 without being embedded, and the weight of the floor heat insulating material 12 and the floor base panel 11 acts, the number of the floor heat insulating material 12 that sinks into the protrusion 40 And the area. In addition, the planar shape of the protrusion 40 can be set to a shape such as a circle, an ellipse, a rectangle, and a square in addition to the oval shape.

  If comprised in this way, as shown in FIG. 8, in order to lay and arrange | position the floor heat insulating material 12 between the adjacent large pulls 2, when the both sides of the floor heat insulating material 12 are mounted in the protrusion 40, floor heat insulating material is arranged. The upper surface of 12 protrudes upward from the high-strength heat insulating material 13, and when the floor base panel 11 is laid and disposed on the floor heat insulating material 12, as shown in FIG. Until the floor insulation 12 is pressed downward and the lower surface of the floor foundation panel 11 comes into contact with the upper surface of the high-strength insulation 13, the upper surface of the floor insulation 12 is caused by the weight of the floor foundation panel 11 and the floor insulation 12. Since the floor heat insulating material 12 is indented into the protrusions 40 while being in close contact with the lower surface of the floor base panel 11 without substantial gaps, the upper surface of the floor heat insulating material 12 can be reliably brought into close contact with the lower surface of the floor base panel 11.

(2) As shown in FIG. 10, it is possible to use a support member 14B in which the receiving portion 22a of the floor heat insulating material 12 in the support portion 22B is set at a position higher than the base portion 22b of the support portion 22B. In this case, the upper surface of the floor heat insulating material 12 is higher than the upper surface of the high-strength heat insulating material 13 in a state where the floor heat insulating material 12 is placed on the support portion 22B as in the floor heat insulating structure 10B shown in FIG. When projecting to a slightly higher position and placing the floor foundation panel 11 on the floor insulation 12, the support 22 </ b> B elastically deforms downward, and the floor foundation panel 11 closely contacts the floor insulation 12 and the high-strength insulation 13 without any gaps. Will do.

(3) In the embodiment, a gap corresponding to the thickness of the upper surface portion 20 of the support 14 is formed between the high-strength heat insulating material 13 and the large pull 2, and the length direction formed on the upper surface of the large pull 2 As shown in FIGS. 12 and 13, in order to prevent this, a gap is formed between the high-strength heat insulating material 13 and the large pull 2 by the two reinforcing grooves 2a extending in the direction shown in FIGS. On the lower surface of the material 13C, two protrusions 41 that respectively fit into the two grooves 2a of the large pull 2 are formed over the entire length, and the groove portion 42 that fits the upper surface portion 20 of the support 14C is formed in the length direction. Are formed at regular intervals, and the protrusions 41 are fitted into the grooves 2a, and the groove portions 42 are fitted into the upper surface portion 20 of the support 14C, so that the high-strength heat insulating material 13C is attached to the draw 2 and the support 14C. Is constructed so that it can be in close contact with almost no gap, and a high-strength heat insulating material 13C It is also a preferred embodiment to increase by the heat insulating performance.

  Moreover, when comprised in this way, it is also preferable embodiment to form the uneven | corrugated fitting part for positioning 14 C of support tools with respect to the high intensity | strength heat insulating material 13C with respect to the width direction. For example, as shown in FIGS. 12 and 13, a pair of fitting protrusions 43 that protrude upward are formed on the upper surface portion 20 of the support 14 </ b> C, and are fitted on the bottom surface of the groove portion 42 of the high-strength heat insulating material 13 </ b> C. A bottomed fitting hole 44 that fits into the protrusion 43 can be formed. It is also a preferred embodiment that the double-sided tape 23 is attached in advance to the upper surface side rather than the lower surface side of the upper surface portion 20 of the support 14C.

  When constructing the floor foundation structure using the high-strength heat insulating material 13C and the support tool 14C configured as described above, the release paper is peeled off from the double-sided tape 23, and then the fitting protrusion of the upper surface part 20 of the support tool 14C. The upper surface portion 20 is fitted into the groove portion 42 so that 43 is fitted into the fitting hole 44 of the high-strength heat insulating material 13C, and the support 14C is attached to the high-strength heat insulating material 13C by the fitting protrusion 43 and the fitting hole 44. The support 14C is positioned and fixed to the high-strength heat insulating material 13C by the double-sided tape 23 while positioning in the length direction and the width direction.

  Next, the high-strength heat insulating material 13C to which the support tool 14C is attached is externally fitted from above so that the protrusion 41 of the high-strength heat insulating material 13C is fitted into the groove 2a of the large pull 2 with respect to the large pull 2. The support 14C and the high-strength heat insulating material 13C are set in the large pull 2, and then the side portion of the floor heat insulating material 12 is placed on the support 22 in the same manner as described above, and the adjacent large pull A floor heat insulating material 12 is laid between the two, a floor base panel 11 is laid thereon, and the floor base panel 11 is roughly fixed with screws 16 to construct a floor base structure.

(4) Like the high-strength heat insulating materials 13D and 13E shown in FIG. 14 and FIG. 15, the width of the high-strength heat insulating materials 13D and 13E is set to be larger than the wide width, and the high-strength heat insulating materials 13D and 13E Both side portions are configured to extend from the large pull 2 to the left and right sides, and positioning protrusions 45 and 46 extending downward along the side surfaces of the large pull 2 are formed on both side portions of the high-strength heat insulating materials 13D and 13E. You can also If comprised in this way, the positioning protrusions 45 and 46 are fitted to the right and left sides of the large pull 2, and the high-strength heat insulating materials 13D and 13E can be easily positioned in the width direction of the large pull 2.

  The positioning protrusions 45 and 46 are preferably provided over the entire length of the large pull 2 in order to reduce the space between the large pull 2 and the floor insulation 12 as much as possible to improve the heat insulation performance. It is also possible to form a plurality at intervals in the vertical direction.

  Although the downward projecting length of the positioning protrusions 45 and 46 can be arbitrarily set, it is preferably set to at least 3 mm or more below the floor heat insulating material 12 in order to ensure the positioning function for the large pull 2. Even if it is extended, the production cost of the high-strength heat insulating materials 13D and 13E is increased and only bulky. Therefore, it is preferable to set the length to the lower end of the floor heat insulating material 12. The thickness is preferably set to 3 mm or more so that the strength and rigidity of the positioning protrusions 45 and 46 are sufficiently secured, and is set to 25 mm or less so as not to increase the production cost of the high-strength heat insulating material. It is preferable. A high-strength heat insulating material 13D shown in FIG. 14 is a case where a positioning protrusion 45 with a small height and thickness is provided with an emphasis on the positioning function, and the high-strength heat insulating material 13E shown in FIG. In the case where the height and thickness are set large with an emphasis on heat insulation performance.

Longitudinal section of bundled floor assembly and floor insulation structure Explanatory drawing of bundled floor assembly and floor insulation structure Perspective view of support, high-strength insulation and large pull Perspective view of support Perspective view of support and high-strength insulation Longitudinal sectional view of floor insulation structure of other configuration The perspective view of the support tool of other composition Longitudinal sectional view before laying the floor base panel of the floor insulation structure using the support Longitudinal sectional view after laying the floor base panel of the floor insulation structure using the same support The perspective view of the support tool of other composition Longitudinal sectional view before laying the floor base panel of the floor insulation structure using the support Perspective view of another structure of support, high-strength heat insulating material, and large pull Explanatory drawing of assembly method for large pulling of the support and high-strength insulation Longitudinal sectional view after laying a floor foundation panel with a floor insulation structure using high-strength insulation of other configurations Longitudinal sectional view after laying a floor foundation panel with a floor insulation structure using high-strength insulation of other configurations

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor set 2 Large-drawing 2a Strip groove 3 Drum clan cleat 4 Bundle 10 Floor heat insulation structure 11 Floor base panel 12 Floor heat insulating material 13 High-strength heat insulating material 14 Support tool 15 Floor finishing material 16 Screw 20 Upper surface part 21 Side surface part 22 Support part 23 Double-sided tape 35 Tapered surface 36 Slit 10A Floor heat insulating structure 14A Support tool 40 Projection 10B Floor heat insulating structure 14B Support tool 22B Support part 22a Receiving part 22b Base part 13C High strength heat insulating material 14C Support tool 41 Projection 42 Groove 43 Fit protrusion 44 Mating hole 13D High strength heat insulating material 45 Positioning protrusion 13E High strength heat insulating material 46 Positioning protrusion

Claims (8)

A floor thermal insulation structure in which a floor base panel is laid without interposing joists on a metal large pull, and a floor heat insulating material is arranged below the floor base panel between adjacent large pulls,
Wherein arrange a large pull and density between the underfloor panel made of foamed resin molded body of low expansion ratio is 50kg / m ³ ~400kg / m ³ high strength heat insulating material,
As a support for supporting the floor heat insulating material, a top surface portion disposed between the high-strength heat insulating material and the large pull, a pair of side surface portions disposed along both side surfaces of the large pull, and the side surface portion Projecting from the side, a support having a support part for supporting the side part of the floor insulation material from the lower side, provided with a gap in the length direction of the large pull,
Floor insulation structure characterized by that.   The floor heat insulating structure according to claim 1, wherein a width of the high-strength heat insulating material is set to be larger than a large width, and the floor heat insulating material is brought into close contact with the high-strength heat insulating material using elastic deformation of the floor heat insulating material.   The width | variety of the said high intensity | strength heat insulating material is set larger than the width | variety of large drawing, The positioning protrusion which extends below along the side surface of large drawing is formed in the both sides of the high strength heat insulating material. Floor insulation structure.   The protrusion is formed in the upper surface of the said support part, The floor heat insulating material was closely_contact | adhered to the floor foundation panel using the elastic deformation of the floor heat insulating material in the position corresponding to a protrusion. Floor insulation structure.   The receiving part of the floor heat insulating material in the said support part is set to the position higher than the base of a support part, and the floor heat insulating material was closely_contact | adhered to the floor foundation panel using the elastic deformation of the support part. The floor heat insulation structure of any one of Claims.   The floor heat insulation structure of any one of Claims 1-5 which affixed the double-sided tape on the contact surface with the large pull in the said support tool, and fixed the support tool to the large pull using the double-sided tape.   A slit extending from the upper surface side or the lower surface side of the floor heat insulating material to the middle portion in the thickness direction is formed over the entire length on at least one side portion of the floor heat insulating material, and the side portion of the floor heat insulating material is formed using the slit. The floor heat insulating structure according to any one of claims 1 to 6, wherein the floor heat insulating material is elastically deformed to bring the side surface of the floor heat insulating material into close contact with the side surface of the high strength heat insulating material and the side surface of the large pulling. The floor heat insulating structure according to claim 7, wherein the support portion is extended from the slit toward the center portion of the floor heat insulating material.

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