JP2000001973A - Tatami mat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the surface of a tatami mat warm, and prevent generation of warping in the tatami mat. SOLUTION: A tatami mat 1 is formed of a tatami face 2 formed of rush or synthetic resin covering the surface of a tatami padding 3. The tatami padding 3 is composed of a resin board 10, metal plates 11, 12 laminated on the surface and back of it, a surface type heat generation body 13 laminated on the surface of the upper metal plate 11, a cushion member 14 laminated on the surface of the surface type heat generation body 13, and a protective sheet 16 covering the back surface of the cushion member 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami mat having a planar heating element inside the tatami mat and capable of warming the tatami mat surface.

[0002]

2. Description of the Related Art A tatami mat is obtained by covering the surface of a tatami mat floor with a tatami mat made of grass or the like. Are known. The tatami floor using this resin board is composed of a resin board made of a synthetic resin such as a synthetic resin foam (for example, styrofoam), a cushion material made of a synthetic resin such as a urethane foam and arranged on the front and back surfaces of the resin board, and polypropylene. And a protective sheet made of a synthetic resin such as that described above and disposed on the back surface of the lower cushion material, and these are integrally formed. A tatami floor using this resin board has advantages such as the absence of mites compared to a straw floor.

[0003]

It is desired that the above-mentioned tatami mat has a structure capable of warming the surface of the tatami mat. Also,
The tatami mats may be stretched and shrunk by heating by irradiation with sunlight or the like, causing warpage, and it is desired to prevent this.

The present invention has been made in view of the above circumstances, and a first object of the present invention is to make it possible to warm the surface of a tatami mat by a sheet heating element disposed inside the tatami mat and to break the sheet heating element. The purpose of this is to prevent electric shock and electric leakage. Further, a second object is to prevent the tatami from being warped due to heating such as a heating element disposed inside the tatami or irradiation of sunlight.

[0005]

According to the present invention, in a tatami mat having a resin board, the surface of the tatami floor is covered with a tatami mat, and the tatami floor is provided on a surface side of the resin board via a metal layer as a ground layer. And a planar heating element.

[0006] The metal layer as the ground layer is a metal plate, a metal foil, a metal net, or a metal layer formed on the back surface of the sheet heating element by printing or vapor deposition. Metal plate, metal foil,
The metal net is preferably attached to the front surface of the resin board or the back surface of the sheet heating element.

[0007] The tatami floor preferably has a cushion material on the surface side of the planar heating element. It is preferable that a metal plate is provided on the back side of the resin board. Further, it is preferable that a cushion material is provided on the back side of the resin board. Further, it is preferable to have a metal plate on the back surface side of the resin board, a cushion material disposed thereunder, and a wooden plate disposed therebetween as a reinforcing material for preventing warpage.
It is preferable that the back surface of the tatami floor is covered with a protective sheet.

The means for energizing the sheet heating element disposed inside the tatami mat is preferably constructed as follows. That is, one or more of the above-mentioned tatami mats are arranged in a rectangular frame member made of a hollow member, and a wiring cord and a ground wire cord are arranged in a hollow portion of the frame member. Are electrically connected to electrodes of the sheet heating element of the tatami mat, and the ground wire cord is electrically connected to a metal layer as a ground layer of the tatami mat.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG.

As shown in FIG. 1, the tatami mat 1 is formed by covering a tatami floor 3 with a tatami mat 2 made of grass, synthetic resin, or the like.

The tatami floor 3 comprises a resin board 10, metal plates 11 and 12 laminated on the front and back surfaces thereof, and an upper metal plate 1.
1, a sheet heating element 13 laminated on the surface of the sheet heating element 13, a cushion material 14 laminated on the surface of the sheet heating element 13, and a cushion material 1 laminated on the back surface of the lower metal plate 12.
5 and a protective sheet 16 covering the back surface of the cushioning material 15.

The resin board 10 is a plate member made of a synthetic resin such as a synthetic resin foam, and ensures a heat insulating effect and a thickness of the entire tatami mat.

The metal plates 11 and 12 are made of a metal such as steel, copper, silver or aluminum, and have an effect of preventing the tatami from warping. The upper metal plate 11 has an effect of preventing electric shock and electric leakage by being connected to the ground wire, and has an effect of making the heat of the sheet heating element 13 uniform on the tatami surface. ing.

As shown in FIG. 2B, the sheet heating element 13 has a resistance heating element 13b made of carbon or the like on the surface of an insulating sheet 13a such as a synthetic resin sheet or a non-woven fabric, and an electrode pattern formed thereon. 13c is a sheet heater formed by printing or the like and covered with an insulating sheet 13d such as a synthetic resin sheet or nonwoven fabric. It is more preferable to form the resistance heating element 13b from a substance that can emit far infrared rays.

The cushioning material 14 laminated on the surface of the sheet heating element 13 is an insulating cushioning material made of a synthetic resin foam sheet or the like. Increase insulation between.

The cushion material 15 laminated on the back surface of the lower metal plate 12 is a cushion material made of a synthetic resin foam sheet or the like, and has elasticity of the entire tatami mat.

The protection sheet 16 is a sheet made of a synthetic resin or the like, and protects the back surface of the tatami floor 3.

A specific example of the tatami floor 3 is as follows. Cushion 14: urethane foam sheet, 5m thick
m Planar heating element 13: A resistance heating element on the surface of a polyester sheet and an electrode pattern printed thereon, and a planar heater covered with a polyester sheet Metal plates 11 and 12: steel plates with a thickness of 0 .07mm Resin board 10: Styrofoam board, thickness 7
mm Cushion material 15: Foamed urethane sheet, 2m thick
m Protective sheet 16: Polyester sheet, thickness 1m
m

The tatami floor 3 is made up of the cushion material 14, the sheet heating element 13, the upper metal plate 11, the resin board 10, the lower metal plate 12, the cushion material 15, and the protective sheet 16.
Are integrally formed by sewing the entire periphery by sewing. In addition, the resin board 10 and the metal plates 11 and 12 are bonded in advance with an adhesive.

Then, the tatami table 2 is covered so as to cover the surface of the tatami floor 3.
Are arranged, and both ends in the longitudinal direction are tatami mat floor 3
Of the tatami floor 3 with adhesive tape
Is adhesively fixed to the back surface. In addition, an edge cloth 17 is sewn on a peripheral portion along the longitudinal direction of the tatami 1 by sewing, thereby protecting the edge of the tatami 1 with makeup. The edge cloth 17 has been subjected to antibacterial treatment by mixing optical semiconductor ceramic powder into the cloth.

Next, means for energizing the sheet heating element 13 is shown in FIG.
This will be described with reference to FIG.

Six tatami mats 1 are spread in a square wooden frame 20. The wooden frame 20 is formed of a hollow member.
That is, the frame 21 includes a rectangular frame 21 having a trapezoidal cross section and an open upper surface, and a lid 22 formed of a rectangular frame plate that covers an open portion of the upper surface of the frame 21. The frame body 21 is composed of a bottom plate 21a, a vertical plate 21b standing upright on the inner periphery of the bottom plate 21a, and a swash plate 21c standing upright on the outer periphery of the bottom plate 21a. . In the frame plate 21, support plates 23 each having an inverted L-shaped cross section for supporting the lid 22 are provided at appropriate plural locations around the entire circumference, and are fixed to the inner surface of the upper end of the vertical plate 21b of the frame 21.
The lid 22 is placed on the support plate 23 so as to be able to close the upper surface of the frame 21, and can be fixed to the support plate 23 by screws with set screws 24.

On the other hand, the wiring cord 25 and the grounding cord 26
Are inserted and arranged in the hollow portion 27 of the wooden frame 20.

Each wiring cord 28 electrically connected to each electrode of the planar heating element 13 in each tatami mat 1 is provided with a cutout formed on an edge of the upper metal plate 11 and the resin board 10. After passing through the notches 29 and 30 and the through hole 31 formed in the tatami table 2 on the side surface of the tatami 1,
Through the opening 32 formed in the inner side surface of the wooden frame 2
0 and is electrically connected to the wiring cord 25 in the hollow portion 27. The notch 29 of the metal plate 11 penetrates up and down, but the notch 30 of the resin board 10 does not penetrate up and down and is cut to an intermediate depth. 33 is a bushing provided in the through hole 31 part.

Also, each ground wire cord 34 electrically connected to the upper metal plate 11 in each tatami 1 also passes through the cutouts 29 and 30 and the through hole 31, and has an opening on the inner side surface of the wooden frame 20. It is drawn out to the hollow portion 27 of the wooden frame 20 through 32 and is electrically connected to the ground wire cord 26 in the hollow portion 27.

The wiring cord 25 and the ground wire cord 26 in the hollow portion 27 of the wooden frame 20 are both drawn out to the outside through an opening 35 formed on the outer side surface of the wooden frame 20. Wooden frame 2 as shown in 1
Control box 36 fixed to the outer surface of 0
Is connected to the insertion plug 37 via the. The control box 36 has a power switch, a temperature controller,
A timer and the like are provided.

Therefore, in the case where the means for supplying electricity to the sheet heating element 13 is actually constructed, six tatami mats 1 are placed in the wooden frame 20.
After that, each wiring cord 28 connected to each electrode of the sheet heating element 13 of each tatami 1 and each ground wire cord 34 connected to the upper metal plate 11 of each tatami 1 are opened 32.
To the hollow portion 27 of the wooden frame 20 through
The wiring cord 25 and the ground wire cord 26 on the side of the insertion plug 37 arranged in the cavity 27 of the No. 0 are electrically connected to each other. Then, the lid 2 is placed on the upper surface of the frame 21 of the wooden frame 20.
2, and the cover 22 is screwed and fixed to the frame 21.

The wiring cord 28 connected to each electrode of the sheet heating element 13 of each tatami 1 and the cavity 2 of the wooden frame 20 of the ground wire cord 34 connected to the upper metal plate 11 of each tatami 1
The method of pulling out the wooden frame 7 is not limited to the example shown above, and may be drawn out to the hollow portion 27 of the wooden frame 20 as follows, for example. That is, the upper metal plate 1
1, a notch is formed to penetrate each edge of the resin board 10, the lower metal plate 12, the cushion material 15, and the protection sheet 16, and is connected to each electrode of the sheet heating element 13 of each tatami mat 1. The grounding wire cord 34 connected to the metal cord 11 on the upper side of each tatami mat 1 is pulled out to the bottom of the tatami mat 1 through the cutout, and the wood cord is inserted through the opening formed on the bottom face or side face of the wooden frame 20. It is inserted into the cavity 27 of the frame 20.

The operation of the present invention will be described below.

When the ground wire cord 26 is connected to the ground and the plug 37 is connected to a 100 V AC outlet,
When the sheet heating element 13 of each tatami 1 generates heat, the tatami 1
The surface is warmed. At this time, since the heat of the sheet heating element 13 is uniformly transmitted to the entire surface of the upper metal plate 11, the heat of the surface of the tatami 1 becomes uniform over the entire surface. The upper metal plate 1
Since the resin board 10 below 1 has a heat insulating effect,
The heat of the planar heating element 13 efficiently heats the surface of the tatami 1.

Then, the metal plates 11, 1 are placed on the resin board 10.
Since the two are laminated, the resin board 10 is prevented from being warped due to the heat generated by the sheet heating element 13 or the heat generated by irradiation of sunlight.

The upper metal plate 11 has a ground wire cord 2
6 and 34 are connected, so that even if the sheet heating element 13 is damaged or the like, electric shock and electric leakage are prevented.

In the above embodiment, a metal foil made of copper, silver, aluminum or the like may be laminated instead of the upper metal plate 11.

In the above embodiment, a metal net made of steel, copper, silver, aluminum or the like may be laminated instead of the upper metal plate 11.

In the above embodiment, instead of the upper metal plate 11, a metal layer made of steel, copper, silver, aluminum or the like is formed on the back surface of the sheet heating element 13 by printing or vapor deposition. It may be.

Further, a wooden plate may be laminated between the lower metal plate 12 and the cushion material 15 thereunder. For example, in the specific example of the tatami floor 3, plywood (thickness: 2.5 mm) is laminated between the lower metal plate 12 and the cushion material 15 thereunder.

In the above description, the cushion material 14 laminated on the surface of the sheet heating element 13 can be omitted in order to enhance the heat transfer to the surface of the tatami 1. However, it is preferably provided for insulation and cushioning.

Although the lower metal plate 12 can be omitted, it is preferably provided to prevent the tatami 1 from warping.

In the above-described embodiment, an example of a 6-tatami mat is shown. However, the present invention is not limited to this. For example, one tatami mat is formed into a square shape and used as a rug laid on the floor. You can also. In this case, the frame member may be omitted.

[0040]

As described above, according to the present invention, in a tatami mat having a tatami floor using a resin board, the surface of the tatami mat can be warmed by the sheet heating element arranged inside the tatami mat, and the sheet heating element can be heated. Even in the case of breakage or the like, it is possible to prevent electric shock and electric leakage. Further, if a metal plate is arranged inside the tatami mat, it is possible to prevent the tatami mat from being warped due to heating by a sheet heating element or irradiation of sunlight.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, (a) is a longitudinal sectional view showing a part of a tatami, and (b) is a tatami mat spread in a wooden frame.
It is a top view of a tatami mat.

FIG. 2A is a partial cross-sectional plan view showing a connection portion between a sheet heating element and a wiring cord, and a connection portion between a metal plate and a ground wire cord.
(B) is a longitudinal sectional view showing a laminated portion of a sheet heating element and a metal plate, and (c) is a sheet heating element and a wiring cord, and a metal plate and a ground wire cord in a 6-tatami mat laid in a wooden frame. FIG. 4 is a cross-sectional plan view showing a connection configuration with the device.

FIG. 3A is a longitudinal sectional view showing a part of a tatami mat, and FIG. 3B is a longitudinal sectional view of a wooden frame part.

[Explanation of symbols]

1. Tatami, 2 Tatami table, 10 Resin board, 11, 1
2. Metal plate, 13 Planar heating element, 13a Insulating sheet, 13b Resistance heating element, 13c Electrode pattern, 13d Insulating sheet, 14 Cushion material
15. Cushion material, 16 Protective sheet, 17
Edge cloth, 20 .. wooden frame, 21 .. frame body, 21a .. bottom plate,
21b: vertical plate, 21c: swash plate, 22: lid, 2
3 ··· Support plate, 24 ··· Set screw, 25 ··· Wiring cord, 26 ··· ground wire cord, 27 ··· Cavity, 28 ···
Wiring cord, 29, 30 ... notch, 31 ... through hole, 32 ... opening, 33 ... bushing, 34 ... grounding wire cord, 35 ... opening, 36 ... control box, 37 ... plug-in plug.

Claims (11)

[Claims] 1. A tatami mat using a resin board in which the surface of a tatami floor is covered with a tatami mat surface, wherein the tatami mat has a planar heating element on a surface side of the resin board via a metal layer as a ground layer. Tatami characterized by having. 2. The tatami mat according to claim 1, wherein the metal layer as the ground layer is made of a metal plate. 3. The tatami mat according to claim 1, wherein the metal layer as the ground layer is made of a metal foil. 4. The tatami mat according to claim 1, wherein the metal layer as the ground layer is formed of a metal net. 5. The tatami mat according to claim 1, wherein the metal layer as the grounding layer is formed of a metal layer formed on the back surface of the sheet heating element by printing, vapor deposition, or the like. 6. The tatami mat according to claim 1, wherein the tatami mat floor has a cushion material on a surface side of the planar heating element. 7. The tatami mat according to claim 1, wherein the tatami mat floor has a metal plate on the back side of a resin board. 8. The tatami floor has a cushioning material on the back side of the resin board.
The tatami mat described. 9. The tatami floor has a metal plate on the back side of the resin board, a cushioning material disposed thereunder, and a wooden plate disposed therebetween. Item 7. A tatami mat according to any one of Items 1 to 6. 10. The tatami mat according to claim 1, wherein a back surface of the tatami floor is covered with a protective sheet. 11. The method according to claim 1, wherein:
Or, two or more tatami mats are arranged in a rectangular frame member formed of a hollow member, a wiring cord and a ground wire cord are arranged in a hollow portion of the frame member, and the wiring cord is provided on a surface of the tatami mat. A tatami mat which is electrically connected to an electrode of the heating element and wherein the ground wire cord is electrically connected to a metal layer as a ground layer of the tatami mat.