JP2012012767A - Underfloor heat insulating structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor heat insulating structure capable of easily and appropriately laying a heat insulation material on the lower surface of a floor material even in an underfloor narrow space and obtaining an appropriate and sure heat insulation effect.SOLUTION: When laying the heat insulation material 10 in the underfloor space 3 comprising a groundwork 1 and a floor part 2 disposed on the groundwork, the heat insulation material is formed in a thin plate panel shape having a predetermined size and is stuck along the lower surface of the floor part. A side edge part corresponding to falling parts (1 and 4 or the like) suspended downwards from the lower surface of the floor part is turned to a bend part 14 by forming a V-groove 12 at a position a prescribed interval away from the edge part, and it is laid along the sidewall part of the falling parts.

Description

  The present invention relates to an underfloor heat insulating structure that can be adopted regardless of whether it is a newly built house or an existing house, and is preferably used when a heat insulating material is laid on the underfloor space, particularly the lower surface of the floor portion.

  In recent years, houses with high airtightness and high heat insulation properties have been recommended from the viewpoint of energy saving. In addition to newly built houses, heat insulation work has been performed on wall materials, flooring materials, ceilings, etc. in existing houses as well. Came to be.

  By the way, in the heat insulation construction on the lower surface of the floor, there is a restriction that it must be carried out from a narrow space under the floor, and it is possible to secure a sufficient work space compared to the heat insulation construction of wall materials and ceilings. Since it is difficult, a polystyrene foam material or glass wool material that is easy to construct is generally used as the heat insulating material.

  FIG. 5 shows a schematic structure of a conventional lower floor. In FIG. 5, reference numeral 1 is a fabric foundation of a building, 2 is a floor portion supported on the fabric foundation 1, floor portions by floor panels, etc. (this example Shows a case of a floor panel), and an underfloor space 3 is formed below the floor portion 2. In addition, 4 is the large pull which supports the floor part 2, 5 is the pedestal installed on the fabric foundation 1, and 6 is a wall part.

In such a structure, since the heat insulating material 8 is loaded in the floor panel as shown in FIG. 5, the heat insulating performance is ensured.
In order to further improve the heat insulation performance in the conventional lower floor as described above, for example, a heat insulating material such as a foamed urethane layer is formed on the lower surface of the floor (floor panel) 2 by spraying or the like. In order to prevent the influence of cool air from the underfloor space, it functions as underfloor insulation. Such a heat insulating material is formed by spraying a foamed urethane material or the like through a hose or the like using a spraying device such as a pump or a compressor (for example, see Patent Documents 1 and 2).

JP 2000-34790 A Japanese Patent No. 3872272

  In the heat insulation under the floor by the conventional spraying of the heat insulating material as described above, the work often depends on the degree of experience and skill, and it is difficult to form the heat insulating material uniformly and surely on the entire lower surface of the floor portion 2. . And in order to lay such a heat insulating material appropriately and reliably, sufficient care is required, and complexity is inevitable.

  In addition, the underfloor heat insulation as described above is performed not only in newly built houses but also when reforming existing houses, and the heat insulating material is easily and appropriately applied to the lower surface of the floor portion in the underfloor space. It is hoped that some measures will be taken to ensure that it can be laid.

  The present invention has been made in view of such circumstances, and even in a narrow space under the floor, a heat insulating material can be easily and appropriately laid on the lower surface of the floor material, and an appropriate and reliable heat insulating effect can be obtained. The purpose is to obtain an underfloor insulation structure that can be used.

  In order to meet such an object, the underfloor heat insulating structure according to the present invention (the invention according to claim 1) is an underfloor heat insulating material in which a heat insulating material is laid in an underfloor space including a foundation and a floor portion disposed on the foundation. In the structure, the heat insulating material is formed in a thin panel shape having a predetermined size, is laid along the lower surface of the floor portion, and has a surface sheet adhered to the lower surface.

  The underfloor heat insulating structure according to the present invention (invention according to claim 2) is, in claim 1, the side edge portion of the heat insulating material laid near the falling portion hanging downward from the bottom surface of the floor portion. A V-groove is formed at a position spaced from the edge portion to form a bent portion, and is configured to be laid along the side wall portion of the falling portion.

  The underfloor heat insulating structure according to the present invention (the invention described in claim 3) is characterized in that, in claim 1 or 2, the heat insulating material is made of glass wool board.

  The underfloor heat insulating structure according to the present invention (invention according to claim 4) is characterized in that, in claim 1, claim 2 or claim 3, the top sheet is a moisture permeable waterproof / windproof sheet.

  The underfloor heat insulating structure according to the present invention (invention according to claim 5) is characterized in that, in claim 1, claim 2 or claim 3, the top sheet is an ant-proof sheet.

  The underfloor heat insulating structure according to the present invention (the invention according to claim 6) is the surface of the portion corresponding to the V groove, in the V groove formed in the heat insulating material according to any one of claims 2 to 5. The sheet is cut, and a heat insulating material portion corresponding to the cut portion is formed with a V-groove with a V-cut jig so that the bent portion near the side edge can be bent in an L shape. .

  As described above, according to the underfloor heat insulating structure according to the present invention, in laying the glass wool board as the heat insulating material on the lower surface of the floor portion in a narrow underfloor space, the labor of the operator is minimized and easily and appropriately. In addition to being able to be laid, there are various excellent effects such as reliable and uniform laying over the entire lower surface of the floor.

  Also, when laying this kind of glass wool board etc. over the entire lower surface of the floor, it is also attached to the sides of the foundation that supports the floor, the beams that support the floor, and the side of the overdraw. However, according to the present invention, it can be performed appropriately and reliably, and the installation work can be easily performed.

  Furthermore, according to the present invention, the present invention is not limited to a newly built house, and is suitable for use in laying a heat insulating material on a lower surface of a floor part that has already been constructed, such as during renovation in an existing house. In the space, a heat insulating material such as glass wool board can be appropriately and reliably laid by a simple laying operation.

It is principal part sectional drawing which shows one Embodiment of the underfloor heat insulation structure which concerns on this invention. (A), (b), (c), (d), (e) is a figure for demonstrating one Embodiment of the underfloor heat insulation structure which concerns on this invention, and explaining the process of the glass wool board as a heat insulating material. . It is a figure for demonstrating the processing of the glass wool board as a heat insulating material laid in the corner part under a floor in the underfloor heat insulation structure which concerns on this invention. (A), (b), (c) is explanatory drawing which shows another embodiment of a heat insulating material in the underfloor heat insulation structure which concerns on this invention. It is a schematic sectional drawing for demonstrating the heat insulation in the conventional floor lower part.

  1 and 2 show an embodiment of an underfloor heat insulating structure according to the present invention. In these drawings, the same or corresponding parts as those in FIG. 5 described above are denoted by the same reference numerals and detailed description thereof is omitted.

  According to the present invention, the glass wool board is used as the heat insulating material 10 when the heat insulating material 10 is laid in the underfloor space 3. As is clear from FIGS. 1 and 2, the heat insulating material 10 is formed in a thin plate shape having a predetermined size, and is laid along the lower surface of the floor portion 2, and a surface sheet 11 is attached to the lower surface. It is worn.

  Here, as the glass wool board which is the heat insulating material 10, as shown in FIG. 2, a surface sheet 11 such as a moisture permeable waterproof / windproof sheet is attached with an adhesive such as hot melt.

  Further, the side edge portion of the glass wool board as the heat insulating material 10 laid near the falling portion of the fabric foundation 1 or the large pull 4 hanging downward from the lower surface of the floor portion 2 is shown in FIG. ), (B), (c), (d), and (e), a V-groove 12 is formed at a predetermined distance from the edge to form a bent portion 14, and the falling It is constructed so as to be laid by fixing with a screw or the like along the side wall portion of the portion (1, 4 etc.).

  The V-groove 12 formed in the glass wool board which is such a heat insulating material 10 is the V-groove 12 as apparent from FIGS. 2 (a), (b), (c), (d) and (e). The surface sheet 11 corresponding to the cut-out portion 11a is cut out, and the heat insulating material portion corresponding to the cut-out portion 11a is formed with the V-groove 12 by a V-cut jig (not shown), so that the bent portion 14 near the side edge is almost formed. It is configured to be bent in an L shape.

  Here, the angle of the V-groove 12 is set to be smaller than 90 °, and is formed so as to be repelled when bent at a right angle. That is, as shown in FIG. 1 and FIG. 2 (e), in order to obtain a repulsive force at the bent portion 14 when laid at a substantially right angle, as shown in FIG. Thus, it is desirable that the angle formed between the heat insulating material 10 and the bent portion 14 is 100 ° to 110 ° in a state before laying which is simply bent in the inner direction of the V groove 12. For example, in this embodiment, the angle of the V groove 12 is set to 80 ° in order to set the angle of the heat insulating material 10 and the bent portion 14 to 100 °.

  Therefore, the heat insulating material 10 using such a glass wool board may be laid by cutting into an appropriate shape according to the laying shape on the lower surface of the floor portion 2 in the underfloor space 3, and attaching and fixing as appropriate.

  Such laying is performed by pressing a glass wool board as the heat insulating material 10 against the lower surface of the floor 2 and screwing a screw (not shown) from the lower side of the board to the floor 2 such as a core of the floor panel. . Here, the top sheet 11 on the lower surface of the board holds the heat insulating material 10 in contact with the lower surface side of the floor portion 2 such as a floor panel, with the head of the screw being in contact from below.

  Further, in the lower surface of the floor portion 2, in the portion where the falling portion such as the fabric foundation 1 or the large pull 4 exists, the side edge is formed so that the heat insulating material 10 such as the glass wool board can be laid also on the side wall portion. The portion is formed as a bent portion 14 and fixed with screws or the like, so that the portion bent in an L shape is laid according to the shape of the lower surface of the floor portion 2 or the side wall portion of the falling portion, etc. I have to.

  And according to such a structure, it is possible to cut | disconnect the glass wool board as the heat insulating material 10 with a suitable shape, and to fix and lay it on the lower surface side of the floor part 2, and to cover the side wall part of a falling part. In addition, it is possible to appropriately lay the corner portion on the lower surface of the floor portion 2.

  Here, in the heat insulating material 10 by the glass wool board laid in the corner part under the floor, as shown in FIG. 3, the V-groove 12 is formed in each of the adjacent side edge parts, and the corner part is more than the intersecting part. Corresponding portions (indicated by 18 in the figure) are cut off, and each of them is bent into an L shape, so that the board can be laid on the corner portion.

In addition, this invention is not limited to the structure demonstrated by embodiment mentioned above, It cannot be overemphasized that the shape of each part which comprises an underfloor heat insulation structure, a structure, etc. can be deform | transformed and changed suitably.
For example, the floor portion 2 may have various structures such as a floor material supported on the large pull 4 and a floor panel supported on the large pull 4.

  Further, the surface sheet adhered to the surface of the glass wool board 10 is not limited to the moisture-permeable and wind-proof sheet, but may be the ant-proof sheet 20. Here, it is necessary to provide such an ant-proof sheet 20 in a state of being wrapped around the side end portion of the glass wool board 10, and as shown in FIGS. 4 (a), (b), and (c), the glass wool board is provided. 10 is attached to the side end.

  In the figure, reference numeral 10a denotes a cut-off portion of the glass wool board 10, and 20a denotes a side edge portion of the ant-proof sheet 20 left when the board is cut off. The side edge portion 20a extends from the board side end portion to the upper surface side. The ant-proof sheet 20 is stuck to the glass wool board 10 by wrapping around and sticking.

1 Fabric foundation 2 Floor (by flooring, floor panels, etc.)
3 Underfloor space 4 Large pull 5 Cargo ring 6 Wall 10 Thermal insulation (glass wool board)
11 Surface sheet (breathable waterproof / windproof sheet)
12 V-groove 14 Bent part 20 Surface sheet (ant proof sheet)

Claims (6)

An underfloor heat insulating structure in which a heat insulating material is laid in an underfloor space composed of a foundation and a floor portion disposed on the foundation,
A heat insulating material is formed in the shape of a thin panel having a predetermined size, is laid along the lower surface of the floor portion, and has a surface sheet adhered to the lower surface. The underfloor heat insulating structure according to claim 1,
The side edge portion of the heat insulating material laid near the falling portion hanging downward from the lower surface of the floor portion is formed into a bent portion by forming a V-groove at a position spaced from the edge portion. An underfloor heat insulating structure configured to be laid along a side wall portion of the falling portion. In the underfloor heat insulating structure according to claim 1 or 2,
An underfloor heat insulating structure, wherein the heat insulating material is made of glass wool board. In the underfloor heat insulating structure according to claim 1, claim 2, or claim 3,
The underfloor heat insulating structure, wherein the surface sheet is a moisture permeable waterproof / windproof sheet. In the underfloor heat insulating structure according to claim 1, claim 2, or claim 3,
The underfloor heat insulating structure, wherein the top sheet is an ant-proof sheet. In the underfloor heat insulating structure according to any one of claims 2 to 5,
The V-groove formed in the heat insulating material is closer to the side edge by cutting out the surface sheet of the portion corresponding to the V-groove and forming the V-groove in the heat insulating material portion corresponding to the cut-out portion with a V-cut jig. An underfloor heat insulating structure characterized in that the bent portion of the floor can be bent in an L shape.

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