JP2001003474A - Floor panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor panel capable of surely increasing its adhesiveness to a surface layer material. SOLUTION: A floor panel 11 comprises a joist 12 and a thermal insulating material 13. A step part 21 is provided at both end lower sides of the thermal insulating material 13. By this, a parallel surface 21a in parallel with the upper and lower surfaces of the thermal insulating material 13 and a vertical surface 21b perpendicular to the parallel surface 21a are formed at both ends of the thermal insulating material 21a. Also, the lower end edge of each step part 21, i.e., a corner part between the thermal insulating part 13 and vertical surface 21b are chamfered, and thus, an inclination part 22 is provided at the lower end edge of each step part. Accordingly, these inclination parts 22 are formed in tapered shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor panel used for a wooden house.

[0002]

2. Description of the Related Art Conventionally, a floor panel having a heat insulating function is disposed between floor frames for the purpose of improving heat insulation of a wooden house.

FIG. 12 shows such a floor panel. The floor panel 51 is composed of four joists 52 made of prismatic wood, and three heat insulating materials 53 arranged between the joists 52. The floor panel 51
The whole has a rectangular plate shape, and is set so that the short side is about 1000 mm and the long side is about 2000 mm.

[0004] By arranging a plurality of such floor panels 51 between the shaft sets, the heat insulation of the floor is improved.

[0005]

By the way, in the conventional floor panel 51, the thickness of the heat insulating material 53 and the dimension of the joist 52 along the thickness direction of the heat insulating material 53 are set substantially equal. . Therefore, when there is a dimensional error in the thickness of the joist 52 and the thickness of the heat insulating material 53, the dimension of the joist 52 may be larger than the thickness of the heat insulating material 53. As a result, the upper surface of the joist 52 may be higher than the upper surface of the heat insulating material 53.

Normally, a floor panel 5 disposed between the floor frame assemblies
A surface material such as a base material or a finishing material is disposed on the surface of the base material 1. Then, the surface material is nailed to the joist 52 and fixed to the floor panel 51. Therefore, when the upper surface of the joist 52 is higher than the upper surface of the heat insulating material 53, the surface material and the heat insulating material 53
A gap was formed between them, and the adhesion between them was poor. Therefore, there is a possibility that dew condensation occurs between the surface layer material and the floor panel 51, and the heat insulation effect is reduced. Further, when both are adhered, there is a possibility that the surface layer material may be separated from the heat insulating material 53.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide a floor panel capable of reliably improving the adhesion to a surface material.

[0008]

According to the first aspect of the present invention, there is provided a floor provided between a frame of a wooden house, and a heat insulating material and a joist are integrally formed. In the panel, the gist is that the upper surface of the heat insulating material is set at a position higher than the upper surface of the joist.

According to a second aspect of the present invention, in the floor panel according to the first aspect, a step is provided below each end of the heat insulating material, and a taper is formed at a lower end edge of each step. The gist is that it has been done.

According to the third aspect of the present invention, in the floor panel according to the first or second aspect, the upper surface of the heat insulating material is set at a position higher than the upper surface of the joist by 0.5 to 2.0 mm. The gist is that you have done.

Hereinafter, the "action" of the present invention will be described. According to the first to third aspects of the present invention, the upper surface of the heat insulating material is set at a position higher than the upper surface of the joist. For this reason, when arranging a surface material on the upper surface of the floor panel after construction of the floor panel, the surface material and the heat insulating material can be securely brought into close contact with each other. Therefore, the adhesion between the surface material and the floor panel can be reliably improved.

According to the second aspect of the invention, steps are provided below both ends of the heat insulating material, and the lower ends of the steps are tapered. For this reason, the floor panel can be reliably installed between the coaxial sets by bringing each step into contact with the shaft set. At this time, the floor panel can be guided between the shafts by the taper. Therefore, the floor panel can be reliably and easily installed between the frame assemblies.

According to the third aspect of the present invention, the upper surface of the heat insulating material is set at a position higher than the upper surface of the joist by 0.5 to 2.0 mm. For this reason, it can prevent reliably that the upper surface of a joist becomes higher than the upper surface of a heat insulating material. Further, when the surface material is fixed to the floor panel and the heat insulating material is deformed, the gap between the surface material and the joist can be reliably filled. Therefore, the adhesion between the surface material and the floor panel can be more reliably improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. As shown in FIGS. 1 and 2, the floor panel 11 is a plate-like object having a substantially square shape in plan view. The floor panel 11 is composed of three joists 12 and one heat insulating material 13. Each joist 12 and the heat insulating material 13 are integrally formed.

Each joist 12 is a prism having a rectangular cross section, and is formed of wood. The length of each joist 12 is set to a predetermined length L1, as shown in FIG. This predetermined length L1 is set to 1000 mm or less.

The heat insulating material 13 has a heat insulating function and is made of a foam material softer than the joist 12.
The heat insulating material 13 has a substantially square shape in plan view, and as shown in FIG. 2, the length L2 of one side is set to be equal to the length L1. That is, the length L1 and the length L2 are
The relationship is 1: 1. In this embodiment, the length L1 of the joist 12 and the length L of one side of the heat insulating material 13 are set.
2 is set to 910 mm. For this reason, the floor panel 11 is a plate-like object having a square shape with one side of 910 mm. Further, as shown in FIG. 3, the thickness T of the floor panel 11 is set to 70 mm.

On the upper surface of the heat insulating material 13, three parallel grooves 14a to 14c are provided at predetermined intervals. Each of the joists 12 has a corresponding one of the grooves 14a to 14a.
4c. For this reason, each joist 1
2 are arranged in parallel. FIG.
As shown in FIG. 4, the joists 12 are joined such that both side surfaces 12 a serving as short sides serve as joining surfaces with the heat insulating material 13. That is, the long side of the joist 12 and the heat insulating material 13
Are parallel to the front and back.

By the way, as shown in FIG.
Is provided at a position separated from the one side end 13a of the heat insulating material 13 by a predetermined distance W1. The groove 14b is provided at a position separated from the other side end 13b of the heat insulating material 13 by a predetermined distance W2. Each groove 14c is
a, 14b are provided at positions separated by a predetermined distance W2. For this reason, both side surfaces of the floor panel 11 are constituted by the heat insulating material 13. The relationship between the distance W1 and the distance W2 is W1 <W2. That is,
The width of the heat insulating material 13 forming one side surface of the floor panel 11 is smaller than the width of the heat insulating material 13 forming the other side surface.
The ratio of the lengths of these distances W1 and W2 is 1: 2.5 to 1:
9 is set. In the present embodiment, the predetermined distance W1 is set to 28 mm, the predetermined distance W2 is set to 221 mm, and the predetermined distance W3 is set to 248 mm.
Therefore, the ratio of the lengths of the distances W1 and W2 is set to about 1: 8.86.

Each joist 12 is joined to the heat insulating material 13 with one end 12b protruding by a predetermined amount C1 from a region where the heat insulating material 13 is formed, that is, from the grooves 14a to 14c. This predetermined amount C1 is set within a range of 0.5 to 50 mm. Therefore, the other end 12c of the joist 12 is in a state of being retracted by the predetermined amount C1 into the formation region of the heat insulating material 13. Thus, a recess 14d is provided on the other end 12c side of the joist 12 in each of the grooves 14a to 14c. In the present embodiment, the predetermined amount C1 is 1.
It is set to 0 mm, and in each figure, in order to make it easy to grasp the protruding state and the retracted state of the joist 12, the protruding amount and the retracting amount of the joist 12 are emphasized more than actual.

As shown in FIGS. 1, 3 and 4, grooves 15 are formed on both side surfaces 12a of each joist 12.
Is provided. These grooves 15 extend along the longitudinal direction of each joist 12 and over the entire length of the joist 12. The groove 15 has a concave shape, and its depth is set to a predetermined depth h1, as shown in FIG. And FIG.
As shown in the figure, the distance L3 between the bottom surfaces 15a of the opposed grooves 15 is set to be equal to the thickness h2 of the joist 12. In other words, the depth h1 of the groove 15 shown in FIG.
Is set to a depth at which the distance L3 between the bottom surfaces 15a of the grooves 15 and the thickness h2 of the joist 12 are exactly equal. Therefore, in the joist 12, the cross-sectional shape (shape of the portion shown by oblique lines in the figure) of the portion excluding both side portions of the groove portion 15 is substantially square. On the other hand, on the inner side surfaces 16 of the concave portions 14a to 14c joined to the both side surfaces 12a of the joist 12, projections 17 corresponding to the groove portions 15 are provided. The joist 12 and the heat insulating material 13 are joined in a state where the protrusion 17 is fitted in the groove 15. In this embodiment, the depth h1 of the groove 15 is 5.0.
mm, and the distance L3 between the bottom surfaces 15a of the grooves 15 is set to 45 mm.

Further, as shown in FIG.
The depth h3 of ~ 14c is greater than the thickness h2 of the joist 12,
It is set to be about 0.5 to 2.0 mm deeper.
For this reason, in the joint state of the joist 12 and the heat insulating material 13, the upper surface of the heat insulating material 13 is more than the upper surface of the joist 12 by 0.5.
About 2.0 mm higher. In other words, the upper surface of the floor panel 11 is in a state where the portion of each joist 12 is depressed. In other words, the upper surface of the floor panel 11 is provided with a concave portion corresponding to each joist 12. In this embodiment, the thickness h of the joist 12 is set.
2 is set to 45 mm, and the depth h3 of the grooves 14a to 14c is set.
Is set to 46 mm. Therefore, the upper surface of the heat insulating material 13 is higher than the upper surface of the joist 12 by about 1.0 mm.

As shown in FIG. 5, steps 21 are provided below both ends of the heat insulating material 13, respectively. These steps 21 are provided on the heat insulating material 13 over the entire length of a side orthogonal to the grooves 14a to 14c. By providing these steps 21, a parallel surface 21a parallel to the upper and lower surfaces of the heat insulating material 13 and a vertical surface 21b orthogonal to the parallel surface 21a are formed at both ends of the heat insulating material 13. As shown in FIG. 5, in this embodiment, the width W4 of the parallel surface 21a is set to 46 mm, and the width W5 of the vertical surface 21b is set to 25 mm.

The lower edge of each step 21, that is, the corner formed by the heat insulating material 13 and the vertical surface 21b is chamfered.
Thereby, an inclined portion 22 is provided at the lower end edge.
Therefore, as shown in FIG. 5, these inclined portions 22 have a tapered shape.

In this embodiment, a polystyrene foam is used as the material of the heat insulating material 13. The reason for using polystyrene foam is as follows. First, polystyrene foam can be recycled instead of being disposable when the heat insulating material 13 is disposed of by dismantling a house or the like. Secondly, polystyrene foam has fine and independent pores (discontinuous pores) inside, so that a moderate deformation is caused by pressing. The expansion ratio of the heat insulating material 13 is preferably set to 30 to 70 times.

Further, in the present embodiment, as the material of the joist 12, a core material of Hiba is used. The reason for using hiba is that it is one of the most excellent rot and ant-resistant woods. The reason why the heartwood was used without using the sapwood of Hiba is that rot resistance and ant resistance are superior to sapwood. Moreover, hiba is inexpensive compared to hinoki and the like, which are also excellent in rot resistance and ant resistance.

The floor panel 11 is produced, for example, through the following procedure. First, the core material of Hiba is cut to form a square material that becomes the joist 12. Then, the square timber is further cut to form the joist 12.

Next, each joist 1 is placed at a predetermined position of a molding die having a concave portion corresponding to the shape of the heat insulating material 13 to be formed.
2 is arranged. Then, after injecting the starting material and polystyrene into the molding die, they are heated to foam them. After they are sufficiently hardened by cooling, the heat insulating material 13 is removed from the molding die. Then, the floor panel 11 in which the joists 12 and the heat insulating material 13 are joined is completed. Therefore, the floor panel 11 is formed by integrally molding each joist 12 and the heat insulating material 13. For this reason,
Each joist 12 and the heat insulating material 13 are joined without requiring an adhesive.

Next, a method of constructing the floor panel 11 of the present embodiment will be described. As shown in FIG. 6, a plurality of floor panels 11 are fitted in a space 33 surrounded by a shaft set consisting of a base 31 and a large-scale pull 32, and the floor panels 11 are arranged neatly. Specifically, as shown in FIG.
Each of the step portions 21 is brought into contact with the base 31 or the large pull 32. At this time, since the inclined part 22 is provided at the lower end edge of each step part 21 in the heat insulating material 13, each step part 21 is guided by these inclined parts 22 and Abuts the bargain 32. Therefore, floor panel 1
1 is smoothly fitted into the space 33.

When fitting the floor panel 11,
The one end 12b of the joist 12 protruding from the heat insulating material 13 is
Is fitted into the corresponding recess 14d of the floor panel 11 adjacent in the direction indicated by the arrow P1.

Thus, each floor panel 11 is placed in the predetermined space 33.
When all of the floor panels 11 are fitted into each other, the floor panels 11 adjacent to each other in the direction indicated by the arrow P2 in FIG. Subsequently, as shown in FIGS. 8 and 9, a surface material 36 including a base material 34 and a finishing material 35 is laid on the surface of each floor panel 11. Here, since the upper surface of the heat insulating material 13 is set higher than the upper surface of the joist 12, FIG.
As shown in (2), the heat insulating material 13 and the surface material 36 are securely adhered to each other.

Then, the joist 12 is inserted through the surface material 36.
By hitting a nail (not shown) at the specified location
The surface material 36 is fixed to the floor panel 11. As described above, since the heat insulating material 13 is appropriately deformed when pressed,
When the nail is hit, the nail is compressed vertically by the force of the nail. Therefore, the gap between the joist 12 and the base material 34 is filled, and the surface material 36 and the floor panel 11 are in a state of being in close contact with each other as a whole.

Therefore, according to the present embodiment, the following effects can be obtained. (1) The upper surface of the heat insulating material 13 is set at a position higher than the upper surface of each joist 12 by about 1.0 mm. Therefore, after the floor panel 11 is constructed, the surface material 3 is placed on the upper surface of the floor panel 11.
When arranging 6, the surface layer material 36 and the heat insulating material 13 can be securely brought into close contact with each other. The heat insulating material 13 is made of a polystyrene foam that is softer than the joist 12, and is appropriately deformed when a pressing force is applied. For this reason, when fixing the surface material 36 and the floor panel 11 with the nail, the heat insulating material 13 is deformed in a vertically compressed state due to the nail attachment force of the nail, and the gap between the joist 12 and the base material 34 is reduced. The gap is filled. Therefore, the adhesion between the surface layer material and the floor panel can be reliably improved. As a result, no dew condensation occurs between the surface material 36 and the floor panel 11 and the heat insulating effect does not decrease.

When the surface material 36 and the floor panel 11 are attached to each other, it is possible to prevent the surface material 36 from peeling off from the heat insulating material 13. (2) Steps 21 are provided below both ends of the heat insulating material 13, respectively. For this reason, the floor panel can be arranged in the space 33 by bringing each step portion 21 into contact with the base 31 or the large-scale pull 32. Therefore, the floor panel 11 can be reliably installed in the space 33.

At the lower edge of each step 21, an inclined portion 22 is provided. Since these inclined portions 22 are tapered, the floor panel 11 can be guided into the space 33 by these inclined portions 22. Therefore, the floor panel 11 can be smoothly installed in the space 33.

As a result, the floor panel 11 can be reliably and easily installed in the space 33. (3) The height difference between the upper surface of the heat insulating material 13 and the upper surface of the joist 12 is set in the range of 0.5 to 2.0 mm. For this reason, even if an error occurs in the thickness of the joist 12 and the dimensions of the grooves 14a to 14c, it is possible to reliably prevent the upper surface of the joist 12 from being higher than the upper surface of the heat insulating material 13. Further, the surface material 36 is fixed to the floor panel 11 and the heat insulating material 13 is fixed.
Is deformed, the gap between the surface material 36 and the joist 12 can be reliably filled. Therefore, the adhesion between the surface material 36 and the floor panel 11 can be more reliably improved. In order to further ensure this effect, it is more preferable to set the difference in height between the upper surface of the heat insulating material 13 and the upper surface of the joist 12 within a range of 0.5 to 1.0 mm. .

The embodiment of the present invention may be modified as follows. As shown in FIG. 10A, both ends 1 of the heat insulating material 13
An inclined portion 41 may be provided on the upper edge of the inner surface 16 of each of the grooves 14a to 14c and the upper edge of the groove 3a, 13b. In this way, when the heat insulating material 13 is deformed to fix the surface material 36 to the floor panel 11, the deformed heat insulating material 13
Can be reliably prevented from being caught between the joist 12 and the surface material 36 by the upper end edge of the joist (see FIG. 10B). Therefore, the joist 12 and the surface material 36
Can reliably fill the gap between the floor panel 11
And the entire surface material can be more reliably improved in adhesion.

In the above embodiment, the inclined portions 22 are provided at the lower edge of each step portion 21. However, the inclined portion 22 may be changed to a curved portion 43 having a curved section as shown in FIG. Also in this case, the floor panel 11 can be fitted into the space 33 while being guided by the curved portion 43 or the inclined surface 21c. Therefore, the floor panel 11 can be smoothly installed in the space 33.

Further, the inclined portion 22 is omitted, and FIG.
As shown in (b), the vertical surface 21b of the step portion 21 may be changed to an inclined surface 21c having a predetermined angle θ that forms an angle of 90 ° or more with the parallel surface 21a. In this case, the inclined surface 21c of the step portion 21 has a tapered shape, so that the same effect as the above effect can be obtained.

In the above embodiment, a polystyrene foam is used as the material of the heat insulating material 13. However, the material of the heat insulating material 13 is not limited to polystyrene foam, but may be phenol resin, silicone resin, urea resin,
Rigid urethane foam or the like may be used. These may be used in any combination.

In the above embodiment, one end of the joist 12 protrudes from the heat insulating material 13, and the other end is retracted into the heat insulating material 13. However, the present invention is not limited to this, and a change may be made so that one end of the joist 12 does not protrude from the heat insulating material 13 and the other end does not retract into the heat insulating material 13. In other words, jota 1
2 may be changed so as to be located at the same position as the edge of the heat insulating material 13.

Further, both ends of the joist 12 may be located at positions recessed inside the edge of the heat insulating material 13. The length of one side of the floor panel 11 is not limited to 1000 mm or less, and may be set to 1000 mm or more.

In the above-described embodiment, as shown in FIG. 9, the floor panel 11 is fitted into the space 33 in a state where each stepped portion 21 is in contact with the base 31 or the large-scale pull 32. However, in the case where a joist is provided on the side surface of the base 31 or the ebb 32, the floor panel 11 may be fitted into the space 33 in a state where the step portion 21 is in contact with the joist.

The material of each joist 12 is not limited to the heartwood of Hiba, and a sapwood of Hiba may be used. Instead of hiba, one tree species selected from hinoki, hinoki, hinoki, koyamaki, zelkova, cedar, hinoki cypress, and larch may be used as the material for each joist 12. The joists 12 formed from these tree species may be used in any combination.

In the above embodiment, the floor panel 11 is formed by integrally molding each joist 12 and the heat insulating material 13. However, the present invention is not limited thereto, and the floor panel 11 may be formed by separately forming the joists 12 and the heat insulating material 13 and then bonding them.

Next, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiment will be listed below. (1) In a floor panel provided between a frame of a wooden house and integrally formed with a heat insulating material and a joist, steps are provided below both ends of the heat insulating material, and the lower end of each step is provided. Each edge must be tapered. According to the invention described in the technical concept (1), the workability of the floor panel can be improved.

(2) The floor panel according to claim 1, wherein a step is provided at a portion below both ends of the heat insulating material and a portion below both ends of the joist. An inclined surface must be formed.

(3) Claims 1-3, technical idea (2)
In the floor panel according to any one of the above, at least an upper edge of a joint surface of the heat insulating material with the joist,
A slope must be provided. According to the invention described in the technical concept (3), the adhesion between the floor panel and the entire surface material can be more reliably improved.

(4) The floor panel according to any one of claims 1 to 3, and technical ideas (2) and (3), wherein the heat insulating material is made of a material softer than the joist. That According to the invention described in the technical concept (4), when the surface material is fixed to the upper surface of the floor panel, the heat insulating material can be deformed by the surface material, and the joists and the surface material are brought into close contact with each other. be able to. For this reason, the adhesion between the floor panel and the surface layer material can be further improved.

(5) Claims 1 to 3, Technical idea (1)
In the floor panel according to any one of (1) to (4), the heat insulating material is made of a foam material. (6) The floor panel according to any one of claims 1 to 3, and technical ideas (1) to (5), wherein the heat insulating material is:
Be composed of polystyrene foam. According to the invention described in the technical concept (6), the heat insulating material does not need to be disposable and can be recycled.

[0050]

As described in detail above, according to the first to third aspects of the present invention, the adhesion between the surface material and the floor panel can be reliably improved.

According to the second aspect of the present invention, the floor panel can be reliably and easily disposed between the shafts. According to the invention described in claim 3, the adhesion between the surface material and the floor panel can be more reliably improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a floor panel of the present invention.

FIG. 2 is a plan view of the floor panel of the embodiment.

FIG. 3 is a front view of the floor panel of the embodiment.

FIG. 4 is an enlarged plan view showing a part of the floor panel of the embodiment.

FIG. 5 is a side view of the floor panel of the embodiment.

FIG. 6 is a perspective view showing a construction mode of the floor panel of the embodiment.

FIG. 7 is a plan view showing a construction mode of the floor panel of the embodiment.

8 is a side view as seen from the direction of arrow A in FIG. 7;

FIG. 9 is a sectional view taken along line BB of FIG. 7;

FIG. 10 is a front view showing another embodiment of the floor panel of the present invention.

11 (a) and (b) are side views showing a partially enlarged view of another embodiment of the floor panel of the present invention.

FIG. 12 is a perspective view showing a conventional floor panel.

[Explanation of symbols]

11: floor panel, 12: joist, 13: heat insulating material, 13a,
13b: side edge of heat insulating material, 14a to 14c: groove, 15 ...
Groove part, 21 ... step part, 22 ... inclined part, 31 ... base, 32 ...
Enlargement, 33 space, 34 base material, 35 finish material,
36 ... Surface material.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuhiro Asano 5-1-1, Nitta-cho, Takahama-shi, Aichi Pref. Inside the Ibiden Kinuura Plant (72) Inventor Tatsuya Abe 5-1-1, Nitta-cho, Takahama-shi, Aichi No. 7 Ibiden F-term in the Kinuura Plant (reference) 2E001 DB05 DD01 DH11 DH14 EA09 FA12 FA54 FA63 GA12 GA17 GA45 GA52 GA82 HC01 HD03 HD09 KA09 LA07 LA12

Claims (3)

[Claims] 1. A floor panel provided between a frame of a wooden house and integrally formed with a heat insulating material and a joist, wherein the upper surface of the heat insulating material is set at a position higher than the upper surface of the joist. Characterized by floor panels. 2. The floor panel according to claim 1, wherein a step is provided at each lower side of both ends of the heat insulating material, and a taper is formed at a lower end edge of each step. 3. The floor panel according to claim 1, wherein an upper surface of the heat insulating material is set at a position higher than the upper surface of the joist by 0.5 to 2.0 mm.