JP5757553B2 - Underfloor insulation structure - Google Patents

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.
Furthermore, in the lower part of the floor described above, it is also required to take countermeasures against ants, and it is desired to consider such points.

The present invention has been made in view of such circumstances, and even in a narrow space under the floor, it is possible to easily and appropriately lay a heat insulating material on the lower surface of the floor material, and obtain an appropriate and reliable heat insulating effect. An object of the present invention is to obtain an underfloor heat insulating structure that can also provide an ant-proof effect.

In order to meet such an object, the underfloor heat insulating structure according to the present invention (the invention according to claim 1) insulates from the inside of the underfloor space composed of the foundation and the floor portion disposed on the foundation to the bottom surface of the floor portion. a underfloor heat insulating structure for laying the wood, thermal insulation material is formed of a thin panel shape having a predetermined size, while being laid along the floor bottom surface, the lower surface of the heat insulating material, further both side edges The side edge part of the heat insulating material laid near the falling part that is hung down from the bottom surface of the floor, with a top sheet made of an ant proof sheet attached in a state of wrapping from the end surface to the top surface Is formed as a bent portion by forming a V-groove at a predetermined distance from the side edge, and is provided along the side wall portion of the falling portion. .

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

The underfloor heat insulating structure according to the present invention (the invention described in claim 3) is the heat insulating material according to claim 1 or 2, wherein the V groove formed in the heat insulating material is cut out from the surface sheet of the portion corresponding to the V groove. By forming the V-groove in the heat insulating material portion corresponding to the cut portion with a V-cut jig, the bent portion near the side edge can be bent in an L shape.

According to the underfloor heat-insulating structure according to the present invention described above, a narrow Oite the underfloor space and floor bottom surface from the inside of the bed under the space when laying glass wool boards as insulation, requiring time and effort for the worker There are various excellent effects such as minimization and simple and appropriate laying, and reliable and uniform laying on the entire bottom surface of the floor.

  In particular, according to the present invention, since the top sheet made of an ant-proof sheet is attached in a state where the top surface is made to wrap around from the bottom surface of the heat insulating material, and further from the end surface of both side edges, the side edge of the heat insulating material When the part is bent as a bent part through the V-groove and attached along the side wall part of the rising part hanging from the lower surface of the floor part, the part exposed to the underfloor space is exposed to the ant-proof sheet as a surface sheet. Accordingly, the ant-proof effect can be exhibited in accordance with the heat insulating effect by using the heat insulating material.

  In addition, when laying glass wool board or the like over the entire lower surface of the floor as this type of heat insulating material, it may be applied to the side of the foundation that supports the floor, the beam that supports the floor, or the side of the large pull. Although it is desired to provide it attached, according to the present invention, it can be performed appropriately and reliably, and the laying operation 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 for demonstrating one Embodiment of the underfloor heat insulation structure which concerns on this invention. (A), it is a diagram for explaining the processing of the glass wool board as a sectional heat material (b), (c), (d), (e) the underfloor heat-insulating structure according to the present invention. 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), is an explanatory diagram showing an implementation form of insulation material in (b), (c) the underfloor heat-insulating structure according to the present invention. It is a schematic sectional drawing for demonstrating the heat insulation in the conventional floor lower part.

1 and 2 are diagrams for explaining 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. Description 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 is heat insulating material 10, as shown in FIG. 2, shown uses the front surface sheet 11 is adhered with an adhesive such as a hot melt.

Further, in 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, FIG. As shown in a), (b), (c), (d), (e), a V-groove 12 is formed along the side edge at a position spaced from the side edge. The bent portion 14 is configured to be laid by fixing with a screw or the like along the side wall portion of the falling portion (1, 4 or the like).

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 a V-groove 12 using a V-cut jig (not shown), whereby the bent portion 14 near the side edge is formed. It is configured so that it can be bent substantially 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.

Moreover, in the lower surface of the floor part 2, in the part where the falling part 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 on the side wall part. The edge 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 in accordance with the shape of the lower surface of the floor portion 2 or the side wall portion of the falling portion. I am doing so.

  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. A portion corresponding to (represented by 18 in the figure) is cut off and bent into an L shape so that the board can be laid at the corner.

Moreover, the ant-proof sheet | seat 20 is used as a surface sheet affixed on the lower surface of the glass wool board 10. As shown in FIG. As shown in FIGS. 4 (a), 4 (b), and 4 (c), the ant-proof sheet 20 wraps around from the lower surface of the side edge portion to the upper surface through the end surface at both side edge portions of the glass wool board 10. It is pasted in the state.

  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.

  In this way, when both side edges of the heat insulating material 10 are bent and laid on the lower surface of the floor portion, the insulating material 20 covers the entire surface of the bent portion facing the lower surface of the floor portion. In addition to the heat-insulating effect by 10, the ant-proof effect by the ant-proof sheet 20 can be exhibited.

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 .

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
12 V-groove 14 Bent part 20 Surface sheet (ant proof sheet)

Claims (3)

An underfloor heat insulating structure in which a heat insulating material is laid on the lower surface of the floor portion from the inside of the underfloor space composed of the foundation and the floor portion disposed on the foundation,
Thermal insulation material is formed of a thin panel shape having a predetermined size, while being laid along the floor bottom surface, the lower surface of the insulation material, more in a state of flow around toward the top surface from the end surface of both side edges, A surface sheet made of an ant-proof sheet is attached ,
A bent portion is formed by forming a V-shaped groove at a predetermined distance from the side edge of the side edge of the heat insulating material laid near the falling part hanging downward from the lower surface of the floor. The underfloor heat insulating structure is configured to be attached along the side wall portion of the falling portion. The underfloor heat insulating structure according to claim 1,
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 or 2,
V groove formed in the insulation, cut topsheet of the portion corresponding to the V grooves, by a heat insulating material portion corresponding to the cut portion to form a V-groove in the V-cut fixture, the side edges An underfloor heat insulating structure characterized in that the bent portion at the side is foldable into an L shape.

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