JPH0972014A - Under-floor heat insulating thick plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an under-floor heat insulating member with high heat insulating property and ease and flexibility to construct. SOLUTION: After sleepers and floor joists are arranged, an under-floor heat insulating thick plate 3 in a rectangular shape is inserted from between each other neighboring floor joists 1 and mounted on the face of an under-floor. It has the upper part of the side face 4 opposed to the side face of the floor joist 1 and cut out to be engageable with the floor joist 1, the lower part of the end face 5 opposed to the side face of the sleeper 2 and cut out to be engageable with the sleeper 2 and the slope 8 divided into two members 3(a), 3(b) ranging from the upper face side to the lower face side. Since it covers the side face and the lower face of the floor joist 1 and is easily slided at the divided plane for width adjustment, it is easily adhered to adjacent under- floor heat insulating members or the floor joists 1 to show high heat insulating property. It is slantly divided in two and so easily mounted between the floor joists.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor heat insulation slab that is fitted and attached between the joist on the back of the floor and the large pull for the purpose of improving the heat insulation of the floor.

[0002]

2. Description of the Related Art Recently, heat insulation of buildings has been promoted for the purpose of energy saving, and various heat insulating materials and heat insulating methods are used for the back surface of the floor as a part thereof. Recently, more advanced thermal insulation flooring materials have been required to further save energy. In order to meet this demand, it is important to improve the heat insulating property of the joist, and various inventions and inventions have been made. For example, in Japanese Utility Model Publication No. 2-8005,
A heat insulating plate made of foam synthetic resin for floor which is inserted between joists and placed on a large pull is described. In this heat insulating plate, in order to improve the adhesion with the joist, a split groove is provided along a plane parallel to the joist. In addition, Jpn. Pat. Appln.
No. 606) records a heat insulating panel in which at least a pair of structural members (joists) and a heat insulating material are integrated. This heat insulating material covers the side surface and the lower surface of the structural member, and is intended to exert heat insulating performance over the entire floor including the joists.

[0003]

It is presumed that the inventions and inventions aiming at improving the heat insulating property of the joist portion have some effect. However, the size of the joists and the intervals at which they are attached are not always exactly as designed, and there are variations due to on-site construction. For example, the heat insulating plate is not always in close contact with the joists. Further, if the joists and the heat insulating material are integrated, it is easy to use for highly standardized construction, but it is difficult to flexibly meet various requirements in general construction. In order to improve the heat insulating property of the floor surface, a member that can improve the heat insulating property in the joist is necessary, but on the other hand, it must be easy to install and flexible. The present invention has a high degree of heat insulation, the result of research aimed at an underfloor heat insulation member that is easy and flexible to install, without using metal fittings or the like that become a thermal bridge,
It is completed.

[0004]

In order to solve the above-mentioned problems, the present invention is a rectangular underfloor heat insulation slab 3 which is inserted between adjacent joists 1 and attached to the underside of the floor. The upper (floor side) ridge portion of the side surface (referred to as thick plate side surface) 4 opposite to the side surface is notched so that it can be fitted to the side surface and the lower surface (ground side surface) of the joist (notch 6), A lower ridgeline portion of an end face (referred to as a thick plate end face) 5 facing the side face of the pull 2 is notched (notch 7) so that the side face and the upper face of the large pull 2 can be fitted, and the thick plate 3 when attached. The top of the is joist 1
Underfloor insulation, characterized in that it is divided from the upper surface side to the lower surface side by an oblique surface including a line parallel to the side surface 4 (divided surface (line) 8). Provide a plank for use. In the present invention, the intersection angle (acute angle side) θ between the dividing surface 8 and the upper surface or the lower surface is preferably in the range of 20 to 70 degrees. In addition, expanded polystyrene is preferable as the constituent material, and recesses may be provided on the lower surface and / or the upper portion to save the material.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The underfloor heat insulating thick plate of the present invention will be specifically described with reference to the drawings with reference to embodiments. Each of the drawings shows an embodiment of an underfloor heat insulation thick plate of the present invention, FIG. 1 is a cutaway perspective view for explanation showing a mounting state, FIG. 2 is a plan view, FIG. 3 is a front view, and FIG. 4 is a side view. Is. Further, FIG. 5 is an explanatory view of the fitting of the side cutout and the joist, FIG. 6 is a schematic view of the split surface which is mounted by being displaced, and FIG. 7 is an explanatory view of the mounting procedure. The material used for the underfloor heat insulation plank (hereinafter abbreviated as plank of the present invention) 3 of the present invention is a material that can be processed into a predetermined shape, is light, and has a high heat insulation property that can be used under the floor for a long period of time. As long as it is an organic material or an inorganic material, a composite material can be used. Examples thereof include organic materials such as polystyrene foam, polyolefin foam, and polyurethane foam, inorganic materials such as calcium silicate foam, shirasu balloon moldings, and inorganic fiber moldings molded with a binder.
Among them, expanded polystyrene is suitable because it is easy to mold, has high heat insulation, and is economical.

The shape of the plank 3 of the present invention is basically rectangular (rectangular parallelepiped) so as to fit the attachment form of the large pull 2 and the joist 1 under the floor, and is divided at the intermediate portion as described later. It is a pair (3 (a) and 3 (b)). In the thick plate 3 of the present invention, one pair (one sheet) is divided in the middle part. In principle, the area (1 block) under the floor, which is divided by the adjacent joist 1 and large pull 2 is
A pair of thick plates 3 (a) and 3 divided at the intermediate portion
Insulating by (b), adjacent thick plate 3'of the present invention,
The joist 1 and the large pull 2 are arranged so as to face each other on the center line. The upper surface (floor plate 9 side) and the lower surface (ground side) of each side are cut out so as to fit and join the large pull 2 and joist 1.

The two side surfaces 4 of the plank 3 of the present invention facing the side surface of the joist 1 are notched at the upper ridge portion, and the notched portions 6 are respectively formed as the side and bottom surfaces of the adjacent joists 1 and 1 '. The ridge line part composed of is fitted to prevent heat loss from the joist. Usually, the joist 1 has a rectangular cross section, and is cut out at a right angle. In order to improve the heat insulating property, the uncut notched side surface lower portions of the thick plates 3 and 3 ′ of the present invention which are adjacent and face each other are butted against each other (FIG. 5).
(Shown in (1)) or the notched portion 6 is preferably brought into close contact with the side surface of the joist 1 (shown in FIG. 5 (2)).
Reference numeral 10 is a gap created for that purpose. Usually, the former is adopted, but the latter form can be adopted when the cross section of joist 1 or the joist interval is larger than the design value. Reference numeral 10 is a gap created for that purpose.

The two end faces 5 of the thick plate 3 of the present invention are formed by notching a lower ridge line portion, and the notched portion 7 is formed into a ridge line portion formed by the side surface and the upper surface of the adjacent large pulls 2 and 2 '. It is fitted and placed on the upper surface of the large pull 2 and the thick plate 3 of the present invention
To prevent heat loss from the pulling part. As is the case with both sides 4, the notches 7 are usually cut out at right angles, in order to improve the heat insulation, the notches 7 are brought into close contact with the sides of the large pull 2 or the planks of the present invention facing each other. It is desirable that the upper end surfaces of the notches of the above are abutted against each other and brought into close contact with each other. Further, the upper surface of the thick plate 3 of the present invention is manufactured at a height which does not exceed the upper surface of the joist 1 when it is installed on site so that it does not become an obstacle to the installation of the floor plate 9.

As described above, in the overall shape of the thick plate 3 according to the present invention, both side surfaces 4 project below the joist 1 and both end surfaces 5 project above the pullout 2. That is, the length of the end face 5 of the plank of the present invention is larger than that of the inner method between the adjacent joists, and the side face 4
Is longer than the inner law of the neighboring Daihiki. Therefore,
With the shape as it is, it is extremely difficult to attach the plank 3 of the present invention under the floor after the construction of the hauling 2 and the joist 1 is completed. However, the slab 3 of the present invention is, from the upper surface side to the lower surface side, an oblique surface 8 including a line parallel to the thick plate side surface 4, that is, in the middle in the end face direction, parallel to the thick plate side surface 4 and the upper surface side. Is obliquely divided into the lower surface side and is configured as a pair. However, the divided thick plate members 3 (a) and 3
None of the widths in (b) should exceed the inner dimension between adjacent joists. Generally, the thick plate 3 of the present invention may be divided into distributions from the center in the end face direction. In the side surface direction, it is parallel to the side surface 4 and is divided into upper and lower inclined surfaces, so that after setting the thicker plate member 3 (a) having the larger lower surface, the thick plate member 3 (b) having the larger upper surface is set. If it is inserted at an angle, it can be easily attached. FIG. 7 schematically shows a specific example of the mounting procedure.

The intersection angle (acute angle side) θ between the dividing surface 8 of the plank 3 of the present invention and the upper surface or the lower surface is determined by the width of the joist, the thickness of the plank of the present invention, the inner method of the joist, and the like. . Furthermore, since the dividing surface 8 is inclined, even if there is a slight error in the construction size, it is necessary to slightly shift the joining of the dividing surface 8 as shown in FIG. For example, the length and shape of the end face 5 of the thick plate can be adjusted by slightly modifying the upper face of the thick plate to improve the adhesion between the side portion of the thick plate of the present invention and the joist or the adjacent thick plate of the present invention. be able to. The crossing angle θ is 20 as long as the thick plate of the present invention can be attached.
The range is preferably from 70 to 70 degrees, more preferably from 30 to 60 degrees. Below 20 degrees, the thick plate member 3
After setting (a), it becomes difficult to insert the thick plate member 3 (b). Further, even if it exceeds 70 degrees, it can be inserted by changing the dividing position, but there is a problem in construction because the thick plate member 3 (a) is unstable. Therefore, the intersection angle θ and the division position are limited to a limited range in terms of the manufacturing surface, the construction surface, and the total wall thickness. The most preferable angle is 45 ° ± 5 °.

Further, the thick plate of the present invention is not integrally molded with a structural material or the like, and can be generally cut at a construction site, and the dimension adjustment of a notch portion or the like can be easily performed at the construction site. You can Also, according to the required heat insulation performance,
If partial adjustment of the plate pressure is required, it is possible to provide depressions on the lower surface and / or the upper surface of the slab of the present invention to save heat insulating material. Incidentally, the plank of the same shape as the plank of the present invention in the state of not dividing, when attaching joists on the pulling,
If a joist and a plank are sequentially attached, they can be used as a jig in construction. In the manufacturing procedure of the plank 3 of the present invention,
The pair of plank plate members 3 (a) and 3 (b) of the present invention may be manufactured separately, for example, by preparing respective molds. First, the plank plate 3 of the present invention is manufactured as a whole. After that, it may be cut and divided into a pair.

[0012]

The thick plate of the present invention is provided with notches on the side surface and the end surface, is covered with the side surface and the lower surface of the joist, and is divided in the thickness direction obliquely, so that the divided surface is slid, It is easy to adjust the length of the end face, has high adhesion to joists, and has a high degree of heat insulation. Even in the pulling part, it covers the side face and the top face of the pulling part and maintains high heat insulation. Since it is divided into two members by the oblique dividing surface, they can be easily attached one by one. Since it can be composed of only materials that can be easily processed, it has excellent workability at construction sites and is highly versatile.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view for explaining an attached state of an underfloor heat insulation thick plate of the present invention.

FIG. 2 is a plan view of an underfloor heat insulation thick plate of the present invention.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the same.

FIG. 5 is an explanatory view of fitting of a side cutout and a joist.

FIG. 6 is a schematic diagram of a split surface that is attached by shifting.

FIG. 7 is an explanatory diagram of a mounting procedure.

[Explanation of symbols]

1: joists 2: large pull 3: under-floor heat insulation thick plate 3 (a), 3 (b): divided thick plate member 4: under-floor heat insulation thick plate side surface 5: under-floor heat insulation thick plate end face 6: side surface Notch 7: End face notch 8: Dividing surface (line) 9: Floor plate 10: Gap θ: Crossing angle

Claims (4)

[Claims] 1. A rectangular underfloor thermal insulation slab 3 which is inserted between adjacent joists 1 and attached to the bottom surface of the floor, and which is an upper part (floor) of a side surface (referred to as a slab side surface) 4 facing the side surface of the joist. Side) The ridge line is the side and bottom of the joist (ground side)
Notch (notch 6) so that it can be fitted to and the lower ridge part of the end face (referred to as thick plate end face) 5 facing the side face of the large pull 2 can be fitted to the side face and the upper face of the large pull 2. Notched (notch 7), the upper surface of the plank 1 when attached does not exceed the height of the upper surface of the joist 1 and is an oblique line including a line parallel to the side surface 4 from the upper surface side to the lower surface side. An underfloor thermal insulation slab characterized by being divided by a plane (division plane (line) 8). 2. The underfloor heat insulation plank according to claim 1, wherein an intersection angle (acute angle side) θ between the dividing surface 8 and the upper surface or the lower surface is 20 to 70 degrees. 3. The underfloor heat insulation plank according to claim 1, wherein a recess is provided on the lower surface and / or the upper surface. 4. The underfloor heat insulation slab according to claim 1, 2 or 3, wherein the underfloor heat insulation slab is made of expanded polystyrene.