JPH028005Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention can be fitted between the joists to effectively insulate the floor, and also contributes to streamlining construction and reducing construction costs. This invention relates to a heat insulating board for floors.

(Prior Art) As a construction method for improving the heat insulation properties of a floor, a method is known in which a heat insulation board is placed between adjacent joists and then a floor board is stretched over the heat insulation board.

One such construction method involves fixing the insulation board between the joists using an auxiliary metal fitting such as a heat insulation board holder in a state where the insulation board is raised from the upper surface of the joists.

Another construction method is to use a heat insulating board whose lower surface is flat and whose thickness is smaller than that of the joists, and place it between adjacent joists so that the lower surface is placed on a large pull. There is a type that is fixed by fitting into it (see Utility Model Application Publication No. 1985-190547).

(Problem to be solved by the invention) However, in the former construction method using auxiliary fittings, the insulation board is fixed between the joists with it floating above the top surface of the main drawer, so the insulation Although boards have the advantage of being relatively thin and therefore inexpensive to manufacture, they also require the preparation of special auxiliary fittings, and it takes time and effort to fix them to the joists, which reduces construction efficiency. There was a problem that it was bad.

On the other hand, the latter construction method, in which the insulation boards are fixed between the joists while placed on the floorboards, has the advantage of improving construction efficiency without requiring special auxiliary fittings. A problem arises in that a continuous cavity is formed between the heat insulating plate and the heat insulating effect of the heat insulating plate is impaired due to air convection in the cavity. By the way,
If the thickness of the insulation board is set to be equal to the thickness of the joists in this construction method of placing insulation boards, it is thought that improvement in construction efficiency and improvement in insulation effect can be achieved at the same time. However, when increasing the thickness of the heat insulating board, a problem arises in that more material is required than necessary, leading to an increase in the manufacturing cost of the heat insulating board.

The present invention can solve these problems, such as problems with insulation effectiveness and construction cost, and goes one step further by contributing to further improvement of the efficiency of floor insulation construction by changing the width of the insulation board. Another object of the present invention is to provide a heat insulating board for a floor, which makes it possible to construct a floor heat insulating structure with excellent structural stability.

(Means for Solving the Problems) The floor heat insulating board 1 according to the present invention has a structure in which adjacent joists 1
This is a floor heat insulating board made of foamed synthetic resin that is fitted between 6 and 16, and has a rectangular plate shape in which the upper surface 2 can be in close contact with the lower surface 5 of the floorboard 3. Both longitudinal sides of the main body 6 are elastic over the entire length. The elastically deformable portion 7 has a lower surface 9 that protrudes below the lower surface 12 of the main body 6, and has a large drawer 10 on the lower surface.
The upper surface 13, which can come into contact with the upper surface 11 and is substantially flush with the upper surface 2 of the main body 6, has a groove extending in the length direction with a groove depth of approximately 2/3 or more of the wall thickness of the elastic deformation part. 1
5, and the outer part bounded by the groove 15 serves as a movable piece part 19 that can be elastically deformed inward by being pressed against the side surface of the joist, and the outer part 20 of the movable piece part 19 is an inclined surface whose upper edge 21 is located slightly outward than its lower edge 22, and is provided on one short edge of the main body 6 on the upper surface of the other short edge of the main body 6. This is characterized by a protrusion 25 which can be fitted into the groove 23 formed in the groove.

(Function) However, the floor insulation board 1 of the present invention is
6, the elastic restoring action of the movable piece 19 causes the outer surface 20 of the floor heat insulating board 1 and the joist 16 to
It comes into close contact with the side surface 17, and this close contact state is maintained (see FIG. 4). Note that even if there is variation in the spacing between the joists due to some warping or twisting of the joists, such variation will be avoided because the depth of the groove 15 is deep. It will be absorbed by moderate elastic deformation inward.

Further, the floor heat insulating boards are sequentially joined in a joint shape by fitting the dovetail grooves 23 and the dovetail protrusions 25,
Airtightness at the joint is ensured (see FIG. 5).

When inserting a floor insulation board between the joists, if the top surface of the insulation board partially protrudes from the top surface of the joist due to uneven thickness of the joists, for example, it may cause over-pulling. When the upper surface 2 of the floor heat insulating board 1 is pressed against the large drawer 10 at the opposing part, the bottom surface of the floor heat insulating board 1 is a part of the bottom surface 9 of the elastically deformable part 7 (the part indicated by reference numeral 26 in FIG. 2). Since the upper surface 11 of the heat insulating board is in contact with the upper surface 11, the protruding portion of the upper surface of the heat insulating board is corrected to be flush with the upper surface of the joist by partial compressive deformation of the lower surface portion of the elastic deformation portion 7. Therefore, the floorboards are fixed in close contact with the joists in a natural state, making it possible to construct a heat-insulating floor structure with excellent structural stability that does not cause floor noise or poor insulation.

Furthermore, the deeply formed grooves 15 not only facilitate the elastic deformation of the movable piece 19 as described above, but also facilitate the breaking off of the movable piece 19 at the grooves 15. Therefore, the width of the floor insulation board can be changed. Figure 6 shows movable piece 1
9 is broken off, and FIG.
The state shown is fixed between 6 and 6.

(Example) Examples of the present invention will be described below based on the drawings.

In Figures 1 to 5, a floor heat insulating board 1 according to the present invention
For example, the main body 6 is integrally constructed using foamed synthetic resin such as expanded polystyrene, and has a rectangular plate shape whose upper surface 2 can be in close contact with the lower surface 5 of the floorboard 3.
Elastic deformation parts 7, 7 are formed over the entire length on both longitudinal sides of the holder, and the lower surfaces 9, 9 of the elastic deformation parts 7, 7 can come into contact with the upper surface 11 of the large drawer 10.

The elastically deformable portion 7 is formed such that its lower surface 9 protrudes downward from the lower surface 12 of the main body 6, and the upper surface 13, which is substantially flush with the main body’s upper surface 2, has a wall thickness approximately 2 times larger than that of the elastically deformable portion. A continuous split groove 15 is formed which extends in the longitudinal direction and has a groove depth of 3/4 or more, in this embodiment about 3/4. The outer part bordering on the groove 15 serves as a movable piece part 19 that can be elastically deformed inward by being pressed against the side surface 17 of the joist 16, and the outer part 20
is an inclined surface in which the upper edge 21 is located slightly outward than the lower edge 22.

Due to the natural elastic deformation of the movable piece portion 19, the floor heat insulating board 1 can be easily pushed between the joists 16, and the movable piece portion 19
The outer surface 20 of is in close contact with the side surface 17 of the joist.

Further, one short edge of the main body 6 has a defined groove 23 provided on the surface of the other short edge of the main body 6.
The fifth
As shown in the figure, by fitting them together, the floor heat insulating plates 1, 1 are joined in a state where they are kept airtight.

(Effects of the Invention) The floor heat insulating board of the present invention can effectively insulate the floor, and also greatly contributes to streamlining construction and reducing construction costs. This will be explained in detail below. That is, (1) The floor heat insulating board of the present invention is not only made of foamed synthetic resin which has excellent heat insulating properties, but also has a structure in which both longitudinal sides of the main body whose upper surface is in close contact with the lower surface of the floor board extend over the entire length. The elastically deformable portion has approximately 2/2 of its wall thickness.
A deep split groove with a groove depth of 3 or more is formed, and on the inside of both elastic deformation parts, the groove and the protrusion fit together, so that the floor heat insulating boards are airtight with each other. They are held and sequentially joined.

Therefore, when the floor insulation board of the present invention is pushed between adjacent joists and placed on the upper surface of the floorboard, the upper surface of the floor insulation board may be in close contact with the lower surface of the floorboard, and there may be some contact with the joists. Even if there is variation in the spacing between the joists due to warping or scratching, such variation will be absorbed by the appropriate elastic deformation of the elastically deformed part, and the difference between the outer surface of the elastically deformed part and the side surface of the joist will be absorbed. Close contact will be ensured. This close contact state is continuously maintained even after the floorboard is stretched due to the elastic tensioning action of the elastically deformable portion.

For this reason, the floorboards are almost completely shielded from the cold air under the floor by the floor heat insulating board, and this state is maintained. Therefore, heat loss that occurs in conventional floor insulation construction methods in which a cavity is formed between the floorboard and the insulation board is prevented, and effective insulation of the floor is maintained.

(2) In the floor insulation board of the present invention, the grooves in the elastically deformable portion are formed to have a deep depth, that is, the groove depth is approximately 2/3 or more of the wall thickness; The cushioning properties of the movable piece portion in the elastic deformation portion are good. Further, the outer surface of the floor heat insulating board (the outer surface of the movable piece) is an inclined surface with the upper edge located slightly further outward than the lower edge. Moreover, the floor heat insulating board can be placed between the joists by a simple pushing operation between the joists. For this reason, the floor heat insulating board can be easily and efficiently fixed between the joists.

In addition, in the floor heat insulating board of the present invention, since the lower surface of the elastically deformable portion protrudes downward from the bottom surface of the main body, the floor heat insulating board comes into contact with the large upper surface at a portion of the lower surface of the elastically deformable portion. It happens. Therefore, even if the upper surface of the floor insulation board partially protrudes from the upper surface of the joist due to uneven wall thickness of the joist, the floor insulation board will be partially protruded from the upper surface of the joist due to the partial compressive deformation of the elastically deformed lower surface. It can be easily modified so that the entire top surface of the board is flush with the top surface of the joists. By the way, if the entire bottom surface of the floor insulation board is flush, the contact area between the top surface of the floor insulation board and the bottom surface of the floor insulation board is equal to the contact area between the bottom surface of the elastic deformation part and the top surface of the insulation board. Since it is very large in comparison, it is extremely difficult to modify the height of the upper surface of the floor insulation board.

Furthermore, since the grooves in the floor insulation board of the present invention are formed deep as described above, if the joist spacing becomes somewhat narrow at the border joist portion, for example, one of the movable pieces may be This can be done by breaking it off at the groove, which can improve the utilization efficiency of the floor heat insulating board. Even if the movable piece is broken off in this way, the depth of the groove is deep, so the rough part on the side surface of the floor insulation board formed by breaking off the movable piece (Fig. 6) The code 27 shown in
The area of the part) can be made as small as possible. Therefore, as shown in FIG.
The elastic tensioning action of 9a ensures close contact between the edge joist side surface 17a and the outer surface 20a of the broken-off floor heat insulating board 1a.

For this reason, when using the floor insulation board of the present invention, floor insulation construction can be carried out very efficiently.

(3) The floor heat insulating board of the present invention is placed on a large drawer on the lower surface of the elastically deformable parts provided on both sides of the main body. Therefore, the thickness of the main body is
Similar to the conventional method of floating insulation boards and fixing them, this method can be set as the minimum necessary for floor insulation. Therefore, there is no waste of material used when insulating the floor with a heat insulating board having the same thickness as the joists.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views showing insulation boards for floors, Figure 3 is a perspective view showing an insulation floor structure constructed using insulation boards for floors, and Figure 4 shows insulation boards for floors pushed between floor joists. 5 is a cross-sectional view showing a state in which the floor heat insulating boards are joined together, and FIG. 6 is a partial perspective view showing the floor heat insulating board with the movable piece broken off. , FIG. 7 is a sectional view showing a state in which the floor heat insulating board with the movable piece part broken off is pushed between the floor joists. 1... Floor insulation board, 2... Upper surface of main body, 3...
Floorboard, 5...Bottom surface of floorboard, 6...Main body, 7...Elastic deformation part, 9...Bottom surface of elastic deformation part, 10...Large pull, 11...Large pull top surface, 12...Bottom surface of main body , 13... Upper surface of the elastic deformation part, 15... Division groove,
19...Movable piece part, 20...Outer surface of the movable piece part,
23...Decision groove part, 25...Decision protrusion part.

Claims (1)

[Scope of utility model registration request] It is a floor insulation board made of foamed synthetic resin that is fitted between adjacent joists 16, 16, and the main body 6 has a rectangular plate shape whose upper surface 2 is in close contact with the lower surface 5 of the floorboard 3. Elastic deformation parts 7, 7 are used, and the elastic deformation part 7 has a lower surface 9 that protrudes below the lower surface 12 of the main body 6 and can come into contact with the upper surface 11 of the large drawer 10 at the lower surface. , and the upper surface 13 of the main body 6, which is substantially flush with the upper surface 2, has a split groove 15 extending in the length direction with a groove depth of about 2/3 or more of the wall thickness of the elastic deformation part. The outer part bordering on the groove 15 is a movable piece part 19 that can be elastically deformed inward by being pressed against the side surface of the joist, and the outer surface 20 of the movable piece part 19 is formed by an upper edge 21 thereof. An inclined surface located slightly outward from the lower edge 22,
Further, one short edge of the main body 6 is provided with a protruding protrusion 25 that can fit into a groove 23 provided on the upper surface of the other short edge of the main body 6. Floor insulation board.