JPH09177293A - Tatami-bed of japanese style - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the pressure resistance and shape retaining property of a tatami-bed by forming the oversurface from a hard sheet having surface stiffness, laminating an elastic board on this hard sheet to form a main core material, and attaching firmly moisture preventive layers to the front and the rear surface of this main core material. SOLUTION: A hard sheet 11 with surface stiffness such as plywood or resin plate is laminated on an elastic board 12 consisting of olefin series resin foam or polystyrene foam to form a main core material of tatami-bed. A moisture preventive layer 13 in the form of sheet or film consisting of synthetic resin, craft paper, etc., is attached to the front surface and rear surface of this core material, and the hard sheet 11, elastic board 12, and moisture preventive layer 13 are consolidated using a sewing thread 14 so that a tatami-bed 1 is formed. At least one of the moisture preventive layers 13 is made as an elastic cushion layer, and one surface of the layer 13 is made as a skin layer so that it serves as the external surface of the core. This provides good cushioning and restituting properties. and can preclude existence of any step, occurrence of levitation, etc.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a tatami floor. More specifically, the present invention relates to a new tatami mat which is useful as a thin tatami mat having sufficient cushioning properties and restoring properties in use, pressure resistance, shape retention, stability and the like. .

[0002]

2. Description of the Related Art Heretofore, various lightweight structures have been proposed which are easy to lay and maintain, and which are made of elastic plates as thin tatami mats, for example, synthetic resin foams. It is known that an insulation board is used as an elastic plate and a tatami mat is arranged on it, and a hard plywood is laminated on the insulation board and a tatami mat is arranged on it.

These are intended to be lightweight by using an insulation board and have improved heat insulation and heat insulation properties, and are provided as being convenient in terms of installation and maintenance.

[0004]

However, in the case of the tatami using the elastic plate provided so far, there are still many problems to be solved. For example, in the case of a tatami mat having an insulation board as shown in FIG. 20 (a) as a tatami floor (a) and a tatami mat (a) arranged on the upper surface thereof, as shown in FIG. Tatami floor (a) stretches, warps and twists occur in the tatami mat, pushing up the adjacent tatami mat. Also, as shown in Fig. 20 (c), the tatami mat shrinks due to moisture drying and compression, and the tatami mat (a) peels off. Also, warping and twisting of the tatami mats can cause gaps between the tatami mats. The occurrence of such an abnormality can be shown in FIGS. 21 (a) and 21 (b), but in both cases, the feeling of walking is deteriorated as a change in size and shape in a dry, wet, and cold environment, The deterioration of the tatami mat is inevitable. Moreover, the occurrence of gaps between tatami mats and the rise of tatami mats due to the push up of adjacent tatami mats forms a pool of dust and dust, which promotes the inhabitation of molds and mites and is a cause of even worsening the health of consumers. Becomes

Further, the tatami floor (a) sinks deeply and, together with its deterioration, makes the walking feeling worse, and the deterioration of the tatami floor (a) also impairs heat insulation and heat insulation performance. As a measure against such a problem, as shown in FIG. 22 (a), an insulation board (c) and a plywood (d) are laminated to form a tatami floor (a), and a tatami mat (a) is placed thereon. Although a tatami mat with a plywood is also proposed, in this case, due to the existence of the plywood (d) as a hard and rigid plate, the trouble caused by the shrinkage of the insulation board (c) due to the moisture drying can be avoided. However, as shown in FIG. 22 (b), the extension due to moisture absorption causes warping and twisting of the tatami mat, and pushes up the adjacent tatami mat due to the expansion of the outer dimensions of the tatami mat. As a result, the walking feeling becomes poor, which causes tripping and falling accidents.

Moreover, since the hard and rigid plywood (d) is arranged under the tatami mat (a), there is a problem that the walking impact load becomes large and the slipperiness is high. And in the case of any of the conventional tatami types as described above, when laying or maintaining the tatami, the contact resistance with the adjacent tatami increases due to dimensional changes due to moisture absorption, drying, etc., and shape changes. It was the actual situation that it was not always easy to lay it in a fixed position.

Therefore, the drawbacks of these conventional tatami mats are eliminated, the dimensional expansion and contraction is suppressed in a dry and humid environment, the dimensional and shape-retaining properties are stabilized, and the surface is suitable for repeated walking loads. An improved lightweight thin tatami mat that has rigidity and surface elasticity, reduces the impact of walking, is non-slip, and has good heat insulation / insulation performance, mold / mite habit control, and laying / maintenance workability. Realization of is desired.

[0008]

In order to solve the above-mentioned problems, the present invention has a hard surface rigid thin plate as an upper surface, and an elastic plate is laminated thereon to form a main core material. A tatami mat (claim 1), characterized in that a moisture-proof layer is disposed and integrated on the front and back surfaces of the above. Further, according to the present invention, a tatami floor (claim 2) in which at least one of the moisture-proof layers disposed on the front and back surfaces of the main core material is an elastic cushion layer, and the moisture-proof layer has a skin layer on one side, A tatami floor in which the skin layer is disposed and integrated so as to be the outer surface of the main core material (claim 3), a tatami floor in which the skin layers are laminated and integrated by sewing (claim 4), and the like are also provided as its aspect. .

Further, the present invention is the above-mentioned tatami floor, wherein the outer peripheral end side surface is provided with an inclined chamfered portion facing downward (claim 5). The tatami floor is characterized in that a notch is provided on the back surface of the opposite end parallel to the tatami mat fiber (Claim 6). A tatami floor covered with a film attached or impregnated or applied with a moisture-proof synthetic resin (claim 7), wherein an elastic action body is disposed on the outer peripheral side surface. Tatami floor (Claim 8), the elastic cushion body is a moisture-proof adhesive tape Tatami floor (Claim 9), and the main core is provided with communication holes in the front and back direction (Claim 9). Item 10) etc. are also provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention, which have the above-mentioned structure and exhibit the excellent function and effect as a thin tatami mat, will be described below in more detail with reference to the accompanying drawings.

[0011]

1 and 2 of the accompanying drawings illustrate the configuration of a tatami floor (1) according to the present invention. For example,
As shown in FIG. 1 and FIG. 2, in the tatami floor of the present invention, the hard surface rigid thin plate (1) is used as the upper surface, and the elastic plate (12) is laminated on it to form the main core material and laminated. A moisture-proof layer (13) is arranged and integrated on the front and back surfaces of the main core material. In the example of FIG. 1, the constituent materials of the tatami floor (1) made of these different materials are integrated by the sewing thread (14).

In such a structure, first of all, the hard surface-stiffness thin plate (11) has a suitable surface rigidity for the tatami floor.
For example, veneer plywood, bamboo knitted board, resin board such as polypropylene rigid foam, etc., may be used as the elastic board (12).
As the material that gives the tatami floor (1) an appropriate surface elasticity, an insulation board, an olefin resin foam such as polypropylene or polyethylene, or a polystyrene foam can be used. The moisture-proof layer (13) provided on the front and back surfaces of the tatami floor (1) may be a sheet or film made of synthetic resin such as polyethylene or polypropylene or wax-treated kraft paper, or an elastic cushion. .

In the case of the tatami floor (1) of the present invention which is basically constructed as described above, the moisture barrier layer (13) is disposed and integrated, which is essentially different from the conventional one. Has a big feature. By arranging the moisture-proof layer (13) on the uppermost surface of the tatami floor, the moisture-proof layer (13) has a hard surface rigid thin plate (11) having a small coefficient of wet-heat linear expansion and a small expansion coefficient in the lower part thereof. Since the tatami mats are arranged, the size and shape retention of the tatami upper surface can be stabilized against changes in dry and wet temperatures and cold temperatures. Even with respect to the local load, the local rigidity is suppressed by the surface rigidity of the hard surface rigid thin plate (11) and the surface is deformed, and the elastic plate (12) supports and suppresses the lower part to restore it. Become. In that sense, the elastic plate (12) retains an appropriate surface elasticity.

Further, in the tatami floor (1) of the present invention, since the moisture-proof layer (13) serves as an outside air barrier coating layer, not only is moisture absorption suppressed, but dust adhering / removing property is improved and dust is removed. It will be sealed to prevent scattering and deter the infestation of mold and mites. It will protect the health of consumers. As described above, the moisture-proof layer (13) on the surface may be an elastic cushion, for example, an elastic cushion such as polyethylene foam or urethane rubber foam, in which case the sole of the foot is shallow (for example, 0.5 when the walking load is applied). By using a cushion layer that sinks (about 2 mm), it is possible to obtain the effect of reducing the walking impact load and making it less slippery. In addition, it absorbs the unevenness of the floor base surface and prevents the surface step and floating after finishing the tatami laying. When the moisture-proof layer (13) made of an elastic cushion is arranged on the back surface of the tatami floor (1), the optimum tatami for RC floor concrete floor laying is realized in addition to the above-mentioned action, while walking. There is little rattling of the floor and vertical movement of the floor finish surface.

The moisture-proof layer (13) may have a skin layer on one side, and the skin layer may be the outer surface of the main core material. By doing so, the adhesion of dust and dirt on the back side of the tatami mat is improved and the cleanability is improved, and the tatami mat is well maintained. In addition, the habit of mold and mite will be suppressed. In addition, in the case of the example of FIG. 1, the thread is integrated by the sewing thread, but by doing so, the hard surface rigid thin plate (1
1), the elastic plate (12) and the moisture-proof layer (13) can be independently expanded and contracted without interfering with each other by making the dimension expansion and contraction take advantage of the inter-layer lubricity and displacement action while being in close contact with each other. To do. Therefore, it is possible to realize a composite tatami mat which is excellent in shape retention stability and does not warp or deform due to dimensional expansion and contraction even under changing environmental conditions such as dry and humid conditions.

[0016] Of course, not only is the sewing thread integrated,
It goes without saying that sticking or other means can be appropriately adopted depending on the installation conditions and the like of the tatami mat. FIG. 3 is an overall external view for explaining the tatami floor (1) of the present invention as a more specific example. 4 and 5 are examples of the AA and / or BB cross section of FIG. 3, and as shown in FIG. 4, the tatami floor ( In 1), as described above, a hard core rigid thin plate (11) and an elastic plate (12) constitute a main core material, and a moisture absorption layer (13) is provided on the front and back surfaces thereof and laminated with, for example, a sewing thread (14). The chamfered part (4) which is integrated and is formed on the side surface of the outer peripheral end thereof is directed downward.
The thing provided with (5) is also made into one of the suitable examples.

FIG. 6 exemplifies a state in which a tatami mat using a tatami mat whose outer peripheral side ends are chamfered in an acute angle is laid, and adjacent tatami mats abut each other at this chamfered part. ing. As is clear from FIGS. 4 to 6,
When using a chamfered tatami floor, the area of contact between adjacent tatami mats becomes smaller, and the frictional contact resistance due to the vertical movement of the tatami mats during laying becomes small. The joints can be made more beautiful, and the joints can be made more beautiful, and the push-ups and gaps caused by the expansion and contraction of dimensions after installation can be absorbed by the presence of the chamfers (4) and (5). Become.

As shown in FIG. 7, the inclination of the side edges due to the chamfering brings about the effect of absorbing the dimensional expansion and contraction even in the tatami floor which does not have the moisture-proof layer (13). For example, FIG.
Even if the elastic plate (12) extends due to moisture absorption as shown in (b), the inclination absorbs the dimensional change of the elastic plate (12) so that the outer dimension (A) of the tatami itself hardly changes.

Therefore, as described above, the moisture-proof layer (13)
In the case of providing, the action and effect on such changes in size and shape are further synergistically large. Further, according to the present invention, a tatami floor provided with a notch on the back surface of the opposite end portion parallel to the tatami-mat fibers is also recommended. This is shown in FIG.
8 and 9 showing the BB cross section in FIG. In the example of FIGS. 8 and 9, notches (8) and (9) are provided on the back surface together with the inclined chamfers (4) and (5).

These notches (8) and (9) are constructed so as to maximize the contact area between the lower surface of the tatami floor and the floor base, and act as notches for absorbing the protrusions. It plays a role in minimizing floating during walking load, deflection due to gaps, and vertical movement. In the tatami floor of the present invention, a moisture-proof pressure-sensitive adhesive tape (100) is attached to the side surface of the outer peripheral end portion, or a moisture-proof film (111) is attached as shown in FIG. 11, for example. Alternatively, as shown in FIGS. 12 and 13, it is also effective to cover by impregnation or application of a moisture-proof synthetic resin. By these means, it is possible to suppress contact with the outside air at the side end portion of the tatami floor, and to suppress dimensional expansion and contraction and thickness change due to moisture absorption and desorption. Therefore, fluctuations in humidity during the manufacturing / distribution process and throughout the year are suppressed, and the management of manufacturing and storage conditions becomes easy.

Elastic cushion bodies (114) and (115) may be disposed on the side surfaces of the end portions as illustrated in FIGS. 14 and 15. By doing so, when the tatami mats are in contact with each other when the tatami mat is laid, the elastic cushion bodies (114) (11)
It is possible to absorb dimensional expansion and contraction up to the compression limit of 5), and it becomes easy to adjust dimensional variations during tatami mat production. In this case, the elastic cushion bodies (114) (115) can also serve as the moisture-proof adhesive tape.

16 and 17 show, for example, a tatami constructed by using the tatami floor of the present invention illustrated above, as shown in FIG.
It is illustrated as each of A cross section and BB cross section. On the side surface of the end surface of the tatami mat shown in FIG. 16 which is orthogonal to the fibers, the tatami mat (116) is slightly smaller than the end dimension, for example, 0.
The tatami mat (117) is attached and fixed by staples (118) on the back surface, and the adhesive tape '(119) is arranged. Further, on the side surface of the end portion parallel to the fibers of the tatami mat shown in FIG. 17, the tatami mat (116) and the tatami mat (117) are provided in the notch (8) on the back surface.
Is attached and fixed with staples (118), and an adhesive tape (119) is also provided.

In the case shown in FIG. 16, the tatami mat (11
Due to the short size of 6), the tatami mat (116) and the tatami mat (1) have different linear expansion coefficients, so that the tatami mat (116) does not blister, and the tatami mat is slightly compressed. The bulging does not occur on the tatami mat (116) itself even when pushed up. Then, the staples (118) are fixed so that the productivity and the aesthetic appearance are rational, and the adhesive tape (119) suppresses the displacement and the movement even when the sheet is laid down.

In the case of FIG. 17, the effect of improving the relationship between the tatami floor lower surface and the floor base and minimizing the gap between the tatami floor lower surface and the deflection or vertical movement during walking load due to floating is further obtained. Become. In place of the adhesive tape (119), as shown in FIG. 18, a support (121) having a hard synthetic resin needle-like body (120) is provided on the surface of the tatami floor to be used for laying on a carpet made of fiber. It can also be a tatami mat.

Further, the tatami floor of the present invention will be further described. The main core material of the tatami floor is provided with communication holes in the front and back directions, for example, as illustrated in FIGS. 19 (a) and 19 (b). By using the elastic plate (12) as a porous material having communication holes on the upper and lower sides, it is possible to realize a tatami mat which is excellent in heat retention and heat insulation and has sound absorption. Of course, the weight can be reduced. It is useful as a tatami floor for floor heating. By filling the voids of the porous material with activated carbon, it is possible to simultaneously purify air while conducting heat transfer and convection.

Of course, the present invention is not limited to the above examples. It is not necessary to say a lot about what is possible in the details.

[0027]

As described above in detail, according to the present invention, a thin tatami mat has sufficient cushioning and restoring properties in use, has excellent pressure resistance and shape retention, and causes problems such as steps and floating. Control problems caused by dust, mold and mite,
A tatami mat is provided that is easy to manufacture and install.

Also, heat retention, heat insulation and sound absorption can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating the basic configuration of a tatami floor of the present invention.

FIG. 2 is an exploded perspective view corresponding to FIG.

FIG. 3 is an external perspective view of a tatami floor.

FIG. 4 is a cross-sectional view showing an example in which an inclined chamfered portion is provided on a side surface of an end portion.

5 is a cross-sectional view of another example different from FIG.

FIG. 6 is a cross-sectional view illustrating a laid state of a tatami mat having an inclined chamfer.

7 (a) and 7 (b) are cross-sectional views showing the operation of the inclined chamfered portion.

FIG. 8 is a cross-sectional view showing a rear surface cutout portion.

9 is a cross-sectional view showing another example different from FIG.

FIG. 10 is a cross-sectional view showing an example of applying a moisture-proof adhesive tape.

FIG. 11 is a cross-sectional view showing an example of attaching a moisture-proof film.

FIG. 12 is a sectional view showing impregnation / application of a moisture-proof resin.

FIG. 13 is a cross-sectional view showing another example different from FIG.

FIG. 14 is a cross-sectional view showing an arrangement of elastic cushion bodies.

15 is a cross-sectional view showing another example different from FIG.

FIG. 16 is a cross-sectional view illustrating an end portion of a tatami mat.

FIG. 17 is a cross-sectional view illustrating an end portion different from that of FIG.

FIG. 18 is a sectional view showing still another example of FIG.

19 (a) and 19 (b) are cross-sectional views illustrating a tatami floor made of an elastic plate made of a porous material.

20 (a), (b) and (c) are cross-sectional views showing the problems of the conventional example.

21 is a sectional view similar to FIG.

22A and 22B are cross-sectional views showing the problems of another conventional example.

[Explanation of symbols]

 1 Tatami floor 11 Hard surface rigid thin plate 12 Elastic plate 13 Moisture-proof layer 14 Sewing thread 4,5 Inclined chamfered part 8,9 Cutout part 100 Moisture-proof adhesive tape 111 Moisture-proof film 112,113 Moisture-proof coating 114,115 Elastic cushion body 116 Tatami-table 117 tatami mat Edges 118 Staples 119 Adhesive tapes 120 Resin needles 121 Supports

Claims (10)

[Claims] 1. A hard surface rigid thin plate as an upper surface, an elastic plate is laminated on this as a main core material, and a moisture-proof layer is disposed integrally on the front and back surfaces of this main core material. Tatami floor. 2. The elastic cushion layer is at least one of the moisture-proof layers disposed on the front and back surfaces of the main core material.
Tatami floor. 3. The tatami floor according to claim 1, wherein the moisture-proof layer has a skin layer on one side, and the skin layer is arranged and integrated so as to be the outer surface of the main core material. 4. The tatami floor according to claim 1, wherein the tatami floor is integrally laminated by sewing. 5. The tatami floor according to any one of claims 1 to 4, wherein an inclined chamfer facing downward is provided on a side surface of an outer peripheral end portion thereof. 6. The tatami floor according to any one of claims 1 to 5, wherein a notch is provided on the back surface of the opposite end portion parallel to the tatami mat fibers. . 7. The tatami floor according to any one of claims 1 to 6, wherein the outer peripheral side surface is covered by applying a moisture-proof adhesive tape, a moisture-proof film, or impregnating or applying a moisture-proof synthetic resin. A tatami floor that is characterized by being 8. The tatami floor according to any one of claims 1 to 7, wherein an elastic action body is provided on a side surface of an outer peripheral end portion. 9. The tatami floor according to claim 8, wherein the elastic cushion body is a moisture-proof adhesive tape. 10. The tatami floor according to any one of claims 1 to 9, wherein the main core member is provided with communication holes in front and back directions.