JP2798377B2 - Underfloor insulation board and insulation floor panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor heat insulating plate attached to the back of a floor in order to improve the heat insulation of the floor of a building. The above-mentioned under-floor insulation board is mainly integrated with a joist and a floor material to constitute an insulated floor panel, and is attached to a construction site as a floor to be pulled up.

[0002]

2. Description of the Related Art In recent years, thermal insulation of buildings for energy saving has been progressing. As part of this, heat insulating materials have been installed under the floor to prevent heat radiation from the floor surface. The importance of insulated floor panels is increasing. In many cases, a heat insulating material such as a synthetic resin foam is inserted between joists under the floor, and the heat insulating material is formed into a rectangular thick plate that fits between the joists, and both ends are largely pulled up. It was mounted on However, there is a problem that the heat insulating plate hangs down at the center due to a large interval of the pulling, and a gap is generated between the heat insulating plate and the floor plate or the joist, so that a sufficient heat insulating effect cannot be obtained.

[0003] In order to solve this problem, a metal fitting is hung on a joist to support the heat insulating plate. However, since it is troublesome and costly, for example, Japanese Utility Model Publication No. 2-8005, Japanese Utility Model Publication No. No.-13291 and Japanese Utility Model Application Laid-Open No. 6-7841.
In Japanese Patent Publication No. 0, in order to improve the adhesion with the joist, a continuous groove is provided along a plane parallel to the joist, the upper surface is slightly widened from the joist interval, and is pushed between the joists and placed on the large pull. A heat insulating board made of a foamed synthetic resin has been proposed. In addition, Japanese Utility Model Application No. 4-3508 (Japanese Utility Model Application No. 5-62606) and Japanese Utility Model Application No.
-64492 (Japanese Utility Model Laid-Open No. 6-28032) and Japanese Utility Model Application No. 5
In the file of No. -10035 (Japanese Utility Model No. 6-63327), a heat insulating panel in which a part or the whole of a structural member (joist) is embedded in a heat insulating plate is proposed, which simplifies construction and improves heat insulating performance. We are trying to improve.

[0004]

However, the proposed heat insulating plate does not consider the heat insulation of the joist, and the adhesion to the joist and the supporting force of the heat insulating plate itself are not always sufficient. There are problems such as the center hanging down and the heat insulating effect being reduced, and the outer end of the groove being easily damaged during construction. Further improvements are desired. In addition, when the heat insulating material is thickened, the insulated floor panel on the joist becomes thicker, and the conventional ceiling height has a problem that the effective height between the floor and the ceiling is reduced, which adversely affects the livability.

[0005] In order to improve the underfloor heat insulating plate, it is necessary to have high adhesion at the joist and to improve the heat insulating property and the supporting force. On the other hand, the work must be easy and flexible.
Conventional thermal insulation panel production uses a construction method such as foaming, nailing, or gluing the structural material in a mold in order to integrate the heat insulating material with the structural material. These manufacturing methods cause high costs and there is considerable room for rationalization. In addition, the preferable panel thickness varies depending on the region, and it is necessary to flexibly cope with a change in the heat insulation thickness. The present invention is based on the premise that a heat insulating material layer is provided under a joist, has a high level of heat insulating properties and supporting force, and is a result of research for an underfloor heat insulating board and a heat insulating floor panel which are easy to manufacture and construct.
It is completed.

[0006]

The present invention will be described with reference to the drawings. In order to solve the above-mentioned problem, the present invention relates to an underfloor heat insulating plate 1 to be fitted to a joist 2 and attached to a lower surface of a floor, wherein at least one joist is fitted to an upper surface 4 of a plate-like rectangular heat insulating plate 1. And a projecting portion 7 for gradually reducing the groove width toward the groove bottom is partially formed on the side surface 6 of the joist fitting groove. A slit-shaped hole 8 parallel to the side surface of the joist fitting groove is formed in the groove bottom of the protruding portion.
An underfloor heat insulating plate is provided, wherein a long hole parallel to a side surface of a groove is formed from a lower surface. In the present invention, the protruding top 11 is perpendicular to the upper surface 4 of the heat insulating plate 1,
It is preferable that the vertical length is at least 5 mm. Underfloor insulation plate end face 12 in the direction of joist fitting groove
It is preferable to cut out a required shape in order to make the close contact with the side and upper surfaces of the large drawer 13 and the adjacent underfloor insulation plate 1c. As a material of the underfloor heat insulating plate, expanded polystyrene is preferable.

Further, according to the present invention, a plurality of joists 2 are arranged and fixed at a predetermined interval on one side of a flat plate 3, and a joist fitting groove 5 is formed in the fixed joists using the underfloor heat insulating plate 1 of the present invention. Provide an insulated floor panel that is fitted and tightly integrated. According to the present invention, a plurality of joists 2 are arranged and fixed at a predetermined interval on one surface of a flat plate 3, and the joist fitting groove 5 is fitted into the fixed joists using the above-mentioned under-floor heat insulating plate 1, and is closely integrated. The present invention provides an insulated floor mounting method characterized in that the insulated floor panel is mounted on a large scale 13 by forming the insulated floor panel.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An underfloor heat insulating plate of the present invention will be specifically described with reference to the drawings and embodiments.
The drawings each show an embodiment of the underfloor insulation board or the insulated floor panel of the present invention, FIG. 1 is a plan view showing an embodiment of the underfloor insulation board of the present invention, FIG. 2 is a front view of the underfloor insulation board,
3 is an inner wall view of the joist fitting groove, and FIG. 4 is a detailed sectional view of the joist fitting groove. FIG. 5 is a partially cutaway plan view showing an embodiment of the heat insulating floor panel of the present invention, FIG. 6 is a schematic front view of the heat insulating floor panel, and FIG. 7 is a schematic side view of the heat insulating floor panel.

The underfloor heat insulating plate 1 of the present invention is basically in the shape of a rectangular thick plate, and is fitted to the joist 2 to be integrated therewith. A joist fitting groove 5 is provided. In the present invention, the upper surface means the floor side, and the lower surface means the opposite side of the floor. When the joist 2 is pushed into the groove 5, the width of the joist fitting groove 5 protrudes inward of the groove 5 and the width between the opposing groove side surface or the protruding portion is smaller than the width of the joist 2. Tightly attached to the joist 2 and heat insulation board 1
Is formed, which has the function of supporting the projection.
Supporting means ideally holding the heat insulating plate 1 substantially in contact with the joist 2 and the floor material (for example, 3) for a long period of time. However, dimensional errors of the joist, drying shrinkage, etc. are taken into consideration. In some cases, a gap is provided or a gap is formed.

A slit-shaped hole 8 parallel to the side surface of the groove is formed in the groove bottom at a portion where the protrusion 7 is located. When the joist 2 is pushed in, a crack is generated in the groove portion of the heat insulating plate, and it has an effect of preventing the protruding portion 7 from being unable to support the heat insulating plate 1. On the back side of the protruding portion 7, an elongated hole 10 is formed from the lower surface 9 of the heat insulating plate and parallel to the side surface 6 of the groove. When the joist 2 is pushed into the joist fitting groove 5, the heat insulating material of the protruding portion 7 is compressed, and
It has a function of clamping the joist 2 by compressive stress and bending stress by facilitating the indentation by being bent toward zero.

The underfloor insulation board of the present invention will be described in detail with reference to embodiments. The material used for the underfloor insulation board can be processed into a predetermined shape, and it can be used as an organic or inorganic material if it has a light, moderate strength, elasticity and shape recovery, and can be used under the floor for a long time and has high heat insulation. Any material may be used, and a composite material may be used. For example, organic materials such as polystyrene foam, polyolefin foam and polyurethane foam, and inorganic materials such as calcium silicate foam can be used. Among these, organic synthetic resin foams are easy to use, and among them, most are composed of closed cells and have moderate elasticity, easy molding and high heat insulation,
Economical expanded polystyrene and expanded polyolefin are preferable, and bead expanded polystyrene is particularly preferable.

The joist fitting groove 5 provided on the upper surface 4 of the underfloor insulation board of the present invention is penetrated from one end to the other end so that the joist 2 is embedded in the underfloor insulation board 1. Ideally, the depth of the joist fitting groove 5 is the same as the height of the joist 2 so that a step does not occur between the heat insulating plate 1 and the joist 2 at the joint surface of the floorboard. However, it may be practically determined in consideration of the dimensional error of the joists, drying shrinkage, and the like. The width of the upper surface of the joist fitting groove 5 is preferably slightly larger than the width of the joist 2 so that the joist 2 can be easily pushed.

The underfloor heat insulating plate 1 fitted to the joist 2 is tightly supported by the joist 2 around the protruding portion 7. The protruding portions 7 are preferably provided at equal intervals at 2 to 5 places per 1 m of the length of the side surface 6 of the joist fitting groove. The protruding portions 7 are generally arranged to face the same position on both side surfaces 6 of the groove, but are not limited to this arrangement. It is possible to dispose them so as not to face each other, or to dispose them at a different distance from the groove bottom.

The maximum height of the protruding portion 7 cannot be specified unconditionally depending on the material to be used, but if it is expanded polystyrene, it may be 2 to 10 mm from the groove side surface 6, and preferably 3 to 8 mm. Then, the minimum width of the joist fitting groove 5 including the portion forming the protrusion 7 needs to be smaller than the width of the joist 2. Usually, it is desirable that the width is as narrow as about 4 mm to 10 mm. The part with the minimum width is
Provided on the side near the groove bottom or the side of the middle part. The horizontal length of the protruding portion 7 depends on the number of the protruding portions 7,
0.5 cm or more is preferable. Then, it is desirable that the total length of the protruding portions 7 be within the range of 1/25 to 1/2, preferably 1/10 to 1/3 of the total length of the groove side surface. The length of the protrusion 7 in the vertical direction is desirably at least 1.5 cm, and preferably 2.5 cm or more. Protrusion part 7
The upper edge is usually a slope 1 that reduces the groove width downward.
5 so that the joists can be inserted smoothly. Left and right edges can also be formed on the ramp 16. Note that the horizontal length of the protruding portion 7 referred to in the present invention means a portion where the protruding portion 7 substantially adheres to the joist, that is, a substantial horizontal length of the top portion 11.

It is desirable to provide a flat surface 11 having a vertical length of at least 5 mm, preferably 1-2 cm, perpendicular to the upper surface 4 of the heat insulating plate 1 at the top of the protruding portion 7. This is because the heat insulating effect can be enhanced by closely adhering to the joists, and the underfloor insulating plate can be effectively supported between the joists for a long time. The shape of the protruding portion 7 to be formed does not need to be the same. In particular, the length when forming the protruding portion at both ends of the groove is １ ／ to の of the length of the protruding portion 7 at the intermediate portion. It is often set to 3. The surface shape of the protruding portion 7 is generally rectangular, but is not limited thereto.

Further, if necessary, the width of the bottom of the joist fitting groove 5 can be reduced by being inclined so as to be smaller than the inner dimension of the upper surface. The inner diameter of the joist fitting groove 5 on the upper surface is at least the same as the width of the joist 2, preferably 2 to 5 m.
When the length is increased by about m, the joist 2 can be easily inserted into the groove 5 at the upper portion, which is advantageous for construction, and the adhesion to the joist 2 can be easily improved at the bottom. In addition, an adhesive or the like can be used for the contact surface of the joist fitting groove 5 with the joist 2.

In the underfloor insulation board of the present invention, since the slit-shaped hole 8 is provided at the bottom of the joist fitting groove 5, the tensile stress generated at the groove bottom corresponding to the protruding part 7 when the joist is pushed in. Is alleviated, and damage to the underfloor heat insulating plate 1 can be prevented. Generally, the above-mentioned heat insulating material used for the underfloor heat insulating plate 1 is weak in tensile force, so that the action of the slit hole 8 is a very effective means in practical use. The position and number of the slit-shaped holes 8 are not particularly limited, but are usually provided immediately below each protruding portion 7 within 3 mm inward from the end of the groove bottom, preferably one by one along the end of the groove bottom. However, for example, a plurality of lines are arranged in parallel instead of the above-mentioned one line, the slit hole 8 is divided in the longitudinal direction, or one line is provided at the center of the groove bottom for each pair of facing protruding portions 7. Can also. The length is preferably 100 to 200% of the horizontal length of the protruding part, the width of the hole is preferably 40 to 100% of the height of the protruding part, and the depth of the hole is preferably 1 cm or more. , To the lower surface.

Further, in the underfloor heat insulating plate of the present invention, an elongated hole 10 parallel to the groove side face is opened from the lower surface 9 of the heat insulating plate on the heat insulating material side of the protruding portion 1. Slot 10 is 30mm from the groove side
Within, preferably 5 to 15 mm apart. The mutual positions of the protruding portion 7 and the elongated hole 10 may be slightly shifted as long as the object of the present invention is not hindered. For example, when the protruding portion is provided at the end portion 12 of the heat insulating plate, the position of the long hole 4 may be slightly shifted from the end. The length of the long hole is preferably in the range of +5 cm to -1 cm of the length of the protruding portion. Also,
The width of the slot is usually 2 to 15 mm. The depth of the elongated hole depends on the ratio of the length in the vertical direction between the flat surface 11 formed on the top of the protruding portion and the inclined surface 15;
To a higher position (position closer to the floor). The slot 10 and the protruding portion 7 are usually arranged in one-to-one correspondence. However, the present invention is not limited to the one-to-one correspondence. For example, a plurality of short horizontal length protruding portions arranged in a vertical stripe shape at short intervals, a under-floor heat insulating plate in which one long hole corresponds, It is also possible to manufacture an underfloor insulation board having the reverse configuration.

When the joist 2 is pushed into the joist fitting groove 5 and attached, the protruding portion 7 is pressed inward by the stress from the joist 2 and is compressed and deformed. It is bent and pushed into 10. Therefore, in the conventional heat-insulating flooring in which a continuous groove is provided and the side surface is connected to the main body (the main part of the flooring) at only one side of the lower edge, the groove is easily crushed or broken, and the groove is easily damaged for a long time. Although a strong supporting force could not be expected, in the underfloor heat insulating plate of the present invention, since the long hole 10 is provided separately, it is necessary to strongly press the protruding portion 7 into the long hole 10, As a reaction, the protruding portion 7 comes into contact with the joist 2 with strong pressure, and the underfloor insulation board 1 can be firmly supported for a long period of time. further,
It is also easy to select the dimensions of the elongated hole 10 and the protruding portion 7 to balance the supporting force and the workability.

As shown in the drawing, both side surfaces parallel to the grooves of the underfloor heat insulating plate 1 are provided with cutouts 14 which are joined to the adjacent underfloor heat insulating plate 1b and form a groove for fitting the joist at the joint. The cutout portion 14 can be appropriately processed into a shape similar to the joist fitting groove 5 or a simple cutout shape that closely adheres to the side surface of the joist and adheres to the adjacent heat insulating plate at the lower surface of the joist. For example, the slit-shaped hole 8 provided in the joist fitting groove 5 is unnecessary at the joint portion, except when it is fixed to the adjacent underfloor insulation plate 1b.

When the underfloor insulation board of the present invention is used, the entire joist is buried in the underfloor insulation board 1, so that heat radiation from the floorboard and the joist 2 is prevented, and the heat insulation effect is large. In addition, as long as the required heat insulating performance can be obtained, it is also possible to provide a depression on the lower surface of the underfloor heat insulating plate to save heat insulating material.

The underfloor heat insulating plate 1 of the present invention is advantageous in transportation when assembled and used in a heat insulating floor panel described below, and has high construction efficiency. Therefore, the size of the underfloor insulation board may be selected to be optimal for the production and the insulation floor panel. Usually, as in the embodiment shown in FIG. 1, a joist fitting groove 5 is provided at one central position, and notches 14 are provided on both side surfaces, which is easy to handle and convenient for dimension adjustment. However, for example, when a large heat insulating plate is required, a plurality of joist fitting grooves can be provided in parallel with the required joist spacing, which is convenient for assembly. The length in the groove direction may be the same as the interval of the rough drawing, or may be divided, and can be arbitrarily determined.

Next, the insulated floor panel of the present invention will be described with reference to FIG. The insulated floor panel of the present invention has a plurality of joists 2 arranged and fixed at predetermined intervals on one surface of a flat plate 3 of a required size which also serves as a floor plate, and the above-mentioned understory insulating plate 1 of the present invention is fitted with the joists. The groove 5 is fitted into the fixed joist 2 and is tightly integrated. The material of the flat plate 3 and the joist 2 is not particularly limited, as long as it has a function according to a use site as a building material, regardless of wood or artificial wood. Laminated plywood (commonly known as control panel)
However, wood is preferably used for the joist 2. The underfloor insulation board 1 may be manufactured and assembled in accordance with the size of the insulated floor panel, but is preferably fitted to the underfloor insulation board 1b having a single joist fitting groove and both sides parallel to the groove adjacent to each other. The underfloor heat insulating plates 1 having the above-mentioned shape with the cutouts 14 forming the matching grooves are used side by side.

The insulated floor panel of the present invention is attached by bridging the joist 2 attached to the flat plate 3 on the pulling machine 13.
Therefore, the dimensions of the insulated floor panels are closely laid on the large-sized insulated floor 13 in close contact with the adjacent insulated floor panels, and
It may be decided to be convenient for construction. The joining between the underfloor heat insulating plate 1c and the joist 2c which are adjacent to each other on the large drawer 13 may be a joining mode that does not impair the heat insulating property, such as abutting and joining of heat insulating materials. The insulated floor panel of the present invention, the insulated floor panel, in addition to the insulated floor panel of the standard dimensions described above, such as an insulated floor panel arranged in the peripheral portion, if necessary,
It is also possible to provide a modified insulated floor panel having a size, shape, end face structure and the like according to the size of the building. Further, the insulated floor panel of the present invention is used by laying a tatami mat, a carpet, a flooring material and the like on a flat plate after construction. However, for example, a flooring material may be directly used for a flat plate, or a method of using a flooring material that is previously attached to a flat plate may be used.

[0025]

The underfloor insulation board and the insulated floor panel of the present invention adhere to the joist with a well-balanced strong pressing force when the joist fitting groove is inserted into the joist, and are integrated with the joist for a long time. It is easy to install and provides a high degree of heat insulation over a long period of time. An insulated floor panel can be easily assembled with a joist and a flooring. The assembled insulated floor panel is excellent in heat insulation and workability, and can promote transport and rationalization at a building site.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an underfloor heat insulating plate of the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is an inner wall surface view of a joist fitting groove.

FIG. 4 is a detailed sectional view of a joist fitting groove.

FIG. 5 is a partially cutaway plan view of the insulated floor panel.

FIG. 6 is a front view of the insulated floor panel.

FIG. 7 is a sectional view of an insulated floor panel.

[Explanation of symbols]

1: Underfloor insulation board (1b, 1c: Adjacent underfloor insulation board) 2: Joist (2c: Adjacent joist) 3: Floor board (flat plate) 4: Upper surface of underfloor insulation board 5: Junk fitting groove 6: Joist fitting 8: Slit-shaped hole 9: Lower surface of underfloor insulation board 10: Elongated hole 11: Top surface of projection 12: Underfloor insulation board end face in groove direction 13: Large Pull 1
4: Groove side cutout 15: Upper edge slope 16: Left, right edge slope

Claims (7)

(57) [Claims] An underfloor heat insulating plate (1) fitted to a joist (2) and attached to a lower surface of a floor, wherein at least one heat insulating plate (1) is provided on an upper surface (4) of a plate-shaped rectangular heat insulating plate (1).
A joist fitting groove (5) for fitting the joist of the strip is provided, and the side surface (6) of the joist fitting groove gradually protrudes toward the groove bottom. A portion (7) is partially formed, and a slit-like hole (8) parallel to the side surface of the joist fitting groove is formed in the groove bottom of the protruding portion. A long hole (10) parallel to the side surface of the groove from the lower surface (9). 2. The underfloor insulation according to claim 1, wherein the top portion of the protruding portion is formed as a plane perpendicular to the upper surface of the heat insulating plate and having a vertical length of at least 5 mm. Board. 3. The underfloor insulation according to claim 1 or 2, wherein the protruding portions 7 are formed at equal intervals at 2 to 5 locations per 1 m of the side surface of the joist fitting groove. Board. 4. An end face of the under-floor heat insulating plate in the direction of the joist fitting groove (12).
4. The underfloor insulation board according to claim 1, 2 or 3, characterized in that the underfloor insulation board is cut out so as to be in close contact with the side and top surfaces of the large-scale (13) and the adjacent underfloor insulation board (1b). . 5. The underfloor insulation board according to claim 1, wherein the underfloor insulation board is made of expanded polystyrene. 6. A plurality of joists (2) arranged and fixed at a predetermined interval on one surface of a flat plate (3), and the joists fixed by using the underfloor insulation board according to any one of claims 1 to 5. A thermally insulated floor panel characterized in that a joist fitting groove is fitted into and tightly integrated. 7. A plurality of joists (2) are arranged and fixed at a predetermined interval on one side of a flat plate (3), and the underfloor insulation board (1) according to any one of claims 1 to 5 is used. A method for mounting an insulated floor, characterized in that a joist fitting groove (5) is fitted into a fixed joist, which is intimately integrated into an insulated floor panel, and the insulated floor panel is mounted on a large-scale (13).