JPH0355698Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a corner material attached to a synthetic tatami mat having foamed plastic as a tatami floor. The present invention relates to a corner material for synthetic tatami mats which can prevent damage to the bottom surface of the tatami floor even without using a frame reinforcing material on the bottom surface of the tatami floor, and can also prevent the corners of the surface of the tatami mat from losing their shape.

Technical background of the invention and its problems In Japan, tatami mats have been popular as a flooring material since ancient times. The main body of a tatami is made up of a tatami bed and a tatami mat. Since ancient times, the tatami bed has been made of straw pierced with thread, and the tatami mat has been made of rush stems woven with hemp thread. It is used.

However, synthetic tatami mats that do not use straw have become popular in recent years due to reasons such as the price of straw or rushes rising or fluctuating from year to year, or due to a decline in the number of tatami craftsmen. It has come to be widely used. As the tatami floor in such synthetic tatami mats, foamed plastic such as foamed polystyrene is used in combination with a soft wood wool board made of hardened wood chips called an insulation board, if necessary.

The tatami floor of the synthetic tatami mats mentioned above has a low moisture absorption rate and excellent heat insulation properties, so it can be laid directly on a concrete floor, and it has excellent compressive strength, so it can be used for a long time. It has excellent performance in that it does not deteriorate, and there is no risk of infestation of pests such as mites or corrosion. Furthermore, a tatami floor constructed by laminating a soft wood wool board and a foamed plastic tatami floor so that the surface of the soft wood wool board is located on the front side of the tatami mat also has appropriate moisture absorption and desorption properties.

However, as shown in Fig. 4a, the sides of the tatami floor 1 made of the above-described foamed plastic 2 and soft wood wool board 3 and the tatami face 4 are sewn together so that the foamed plastic 2 is located at the bottom of the tatami. When the tatami mat is sewn together with the thread 5 and used for a long period of time, the sewing thread 5 may be pulled in the direction of the arrow, and the sewing thread 5 may be displaced in the direction of the arrow within the foamed plastic 2. . If the sewing thread 5 becomes misaligned within the foamed plastic 2, the foamed plastic 2 will be damaged in the form of large tears, making it impossible to use the tatami floor repeatedly, and the sewing thread may become loose, which is a serious problem. A problem had arisen.

In order to solve these problems, conventionally,
As shown in FIG. 4b, a groove is formed in the bottom of the foamed plastic 2 that is the tatami floor, a frame 6 made of plywood or the like is inserted into this groove, and the frame 6 is attached to the foamed plastic 2 with adhesive. It was attached to the bottom of the.
However, with this method, a groove is formed in the bottom of the plastic foam 2, or a veneer plywood frame is prepared, inserted into the groove, and attached to the plastic foam 2 with adhesive. This was time-consuming and led to an increase in costs.

Furthermore, when the above synthetic tatami mats are used for a long period of time, the corners of the tatami surface sometimes lose their shape. In order to prevent synthetic tatami mats from losing their shape, conventional corner materials have been placed at the corners of the tatami surface, consisting of a side wall and an upper wall that stands up from the side wall at an angle of less than 90 degrees. has been used. This corner material to prevent deformation is effective in preventing the synthetic tatami surface from deforming, but it is of no use in preventing the aforementioned sewing thread from slipping within the foam plastic. Ta.

Purpose of the invention The present invention is an attempt to solve the problems associated with the prior art as described above, and is to develop a synthetic tatami mat consisting of a tatami face and a tatami floor, with the bottom of the tatami floor made of foamed plastic. By attaching a corner material with a specific structure from the side to the bottom and top surface, it is possible to prevent the sewing thread from slipping within the foam plastic and prevent damage to the foam plastic from the sewing thread, and also to prevent the sewing thread from being damaged by the foam plastic. The purpose is to prevent the surface of the tatami from losing its shape.

Summary of the invention The synthetic tatami corner material according to the invention is made of synthetic resin or paper that is attached from the side to the bottom and top of the synthetic tatami, which consists of a tatami surface and a tatami floor, and the bottom of the tatami floor is made of foamed plastic. It is a corner material made of materials such as, and has a side wall with a length approximately corresponding to the thickness of the tatami floor, a bottom wall rising from one end of this side wall at an angle of 90 degrees or more, and other materials such as It is characterized in that it consists of an upper wall that stands up in the same direction as the bottom wall at an angle of less than 90 degrees from the end, and that it has a thickness that allows a tatami sewing needle to penetrate through it.

By attaching such a corner material from the side to the bottom and top of the synthetic tatami mat, the sewing thread is prevented from slipping within the foamed plastic, and therefore the sewing thread of the foamed plastic is prevented from slipping. To provide a synthetic tatami mat that can prevent damage, prevent loosening of sewing threads, allow repeated use of foamed plastic tatami flooring, and has an excellent appearance. Furthermore, it is possible to prevent the surface corners of the synthetic tatami from losing their shape.

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 is a sectional view of a main part of a synthetic tatami mat to which corner materials according to the present invention are attached, and the same members as those shown in FIG. 4 are given the same reference numerals.

The synthetic tatami corner material 7 according to the present invention is a tatami floor 1
A composite tatami mat consisting of a tatami mat 4 and a tatami mat is attached from the side to the bottom and top, and this tatami floor 1 is made by laminating foamed plastic 2 and a soft wood wool board 3 called an insulation board. , the upper surface of the soft wood wool board 3 is located in contact with the tatami facing 4.

The corner material 7 is made of synthetic resin or paper, and as shown in FIG. A bottom wall 7b rising from one end at an angle α of 90 degrees or more, preferably 90 to 120 degrees, more preferably 95 to 105 degrees, and the side wall 7a.
The top wall 7c stands up in the same direction as the bottom wall 7b, forming an angle β of less than 90 degrees, preferably 70 to 90 degrees, and more preferably 75 to 85 degrees, from the other end. In addition, 8 in the figure is a reinforcing rib of the corner material 7. If the angle α between the side wall 7a and the bottom wall 7b is less than 90 degrees, it will be difficult to attach the corner material 7 to the tatami floor, and the corner material 7 will be attached to the tatami floor 1 by sewing thread.
This is not preferable because the corner material 7 is likely to be destroyed after being sewn to the corner material 7. As shown in FIG. 2, the angle α between the bottom wall 7a of the corner material and the side wall 7a
are arranged so that they form an angle of 90 degrees or more. Therefore, when this corner material is attached to a tatami mat as shown in FIG. 1 or 3, the side wall 7a of this corner material is urged away from the side surface of the tatami mat.
As a result, a biasing force acts on the tatami facing 4 that goes around to the outside of this corner material, and as a result, the tatami facing 4
can be stretched without slack. On the other hand, if the angle β between the side wall 7a and the top wall 7c is 90 degrees or more, it will not be possible to sufficiently prevent the corners of the tatami surface from losing their shape, and after the corner material 7 is sewn to the tatami floor 1, This is not preferable because the corner material 7 is likely to be destroyed. Note that this corner material 7 is attached to the foamed plastic 2 and tatami mat surface 4 which are the tatami floor by means of the sewing thread 5.
is sewn on. In this way, the corner material 7 is sewn to the tatami floor 1 and the tatami facing 4 using the sewing thread 5.
Sewing with the sewing thread 5 is generally performed by passing a tatami sewing needle (not shown) of a floor making machine through the tatami floor 1, the tatami face 4, and the corner material 7. Therefore, in order to enable sewing with the tatami sewing needle as described above, it is preferable that the corner material 7 has a thickness such that the tatami sewing needle can penetrate through it.

The corner material 7 is preferably made of synthetic resin, and more specifically, it is preferably formed from thermoplastic resin such as polyvinyl chloride or polystyrene by extrusion molding. In particular, polyvinyl chloride has high strength. It is preferable considering the cost and cost. When the corner material 7 is made of polyvinyl chloride, the thickness of the corner material 7 is preferably 0.1 to 3.0 mm, preferably 0.5 to 1.0 mm.

Further, this corner material 7 can also be formed of a material other than synthetic resin. Examples of such materials include laminates formed by laminating paper and plastic, and even paper impregnated with plastic to give it rigidity.
It can be formed into a corner material by a method such as pressing or hot pressing. When this paper is used as a material, the thickness of the corner material is preferably about 0.1 to 3.0 mm, preferably about 0.5 to 1.0 mm.

This corner material 7 has side walls 7a as described above.
It is formed from a bottom wall 7b and a top wall 7c, and the side wall 7a has a length that approximately corresponds to the thickness of the tatami floor, specifically 30 to 70 mm, preferably 50 to 70 mm. Often 60mm. Specifically, the bottom wall 7b is preferably about 30 to 60 mm in length, and the upper wall 7c is preferably 15 mm or more, preferably about 20 to 30 mm. Further, on the outer peripheral walls of the side wall 7a, bottom wall 7b and top wall 7c of the corner material 7,
Ribs 8 as shown in the figure may be provided.

By attaching such a corner material 7 to the tatami floor 1, the sewing thread 5 is completely prevented from shifting in the foamed plastic 2 that is the tatami floor, and therefore the foamed plastic 2 is sewn. The foamed plastic 2 can be used repeatedly without being damaged by the thread 5, and the sewing thread 5 can be completely prevented from loosening. Moreover, the surface corners of the synthetic tatami mat will not lose their shape.

Furthermore, since the corner material 7 is thick enough to be penetrated by a tatami mat sewing needle, it can be efficiently manufactured in large quantities by the synthetic tatami floor making machine according to the present invention.

On the other hand, foamed plastic 2, which is a tatami floor,
Specifically, expanded polystyrene, expanded polyethylene,
Conventionally known materials such as foamed polyvinyl chloride are widely used, but among these, foamed polystyrene is particularly preferred, and foamed polystyrene produced by either an extrusion method or a bead method can be used. In addition, the soft wood wool board 3, which is a tatami floor,
As mentioned above, it is made of hardened wood chips.

The thickness of this tatami floor 1 can vary widely as desired, but is generally 30 to 70 mm, preferably 50 to 60 mm. In such a case, the thickness of the foamed plastic 2 is preferably about 20 to 50 mm, and the thickness of the soft wood wool board is preferably about 10 to 30 mm.

When a tatami floor made of foamed plastic 2 such as foamed polystyrene and soft wood wool board 3 is used, as mentioned above, it has excellent heat insulation properties, so it can be laid directly on a concrete floor and can be used for a long period of time. It is possible to obtain a tatami floor that does not deteriorate even when exposed to water, has no fear of pest infestation or corrosion, and has appropriate moisture absorption and desorption properties.

As the tatami cover 4, either a synthetic tatami cover made of synthetic resin or a tatami cover made of rush stems woven with hemp thread can be used.

Furthermore, the synthetic tatami corner material 7 according to the present invention can be attached not only to the synthetic tatami having the foamed plastic 2 and the soft wood wool board 3 as described above, but also to the foamed plastic 2 alone as shown in FIG. It may be attached from the side surface to the bottom surface and the top surface of the synthetic tatami mat on which the tatami floor 1 is formed. In short, the synthetic tatami mat to which the synthetic tatami corner material 7 according to the present invention is attached is of a type in which the bottom of the tatami floor 1 is made of foamed plastic 2.

Note that the synthetic tatami mat to which the corner material 7 for synthetic tatami mats according to the present invention is attached may further include a back sheet (not shown) at the bottom of the tatami floor 1.

Effects of the invention The synthetic tatami corner material according to the invention is attached from the side to the bottom and top of the synthetic tatami, which consists of a tatami surface and a tatami bed, and the bottom of the tatami bed is made of foamed plastic. A side wall having a length approximately corresponding to , a bottom wall rising from one end of this side wall at an angle of 90 degrees or more, and a top wall rising from the other end of this side wall at an angle of less than 90 degrees. and has a thickness that allows a sewing needle to penetrate, i.e.
Since it has a thickness of 0.1 to 3.0 mm, the following effects can be obtained.

(a) It prevents the tatami sewing thread from slipping within the foamed plastic that is the tatami floor, thereby preventing damage to the foamed plastic caused by the sewing thread, as well as preventing the sewing thread from becoming loose. The foamed plastic floor can be used repeatedly, and synthetic tatami mats with excellent appearance can be obtained.

(b) Compared to frame reinforcement materials, it can be attached to synthetic tatami mats much more easily and without much effort.

(c) Deformation of the surface corners of the synthetic tatami is prevented.

(d) The angle between the bottom wall of the corner material and the side wall is 90
It is constructed so as to form an angle of more than a degree. Therefore, when this corner material is attached to a tatami mat, the side wall of this corner material is urged away from the side surface of the tatami mat. As a result, a biasing force acts on the tatami facing that extends to the outside of this corner material, thereby making it possible to tension the tatami facing without loosening.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a synthetic tatami mat to which a synthetic tatami corner material according to the present invention is attached, and FIG. 2 is a sectional view showing an example of a synthetic tatami corner material according to the present invention. FIG. 3 is a sectional view of a main part of another synthetic tatami mat to which a synthetic tatami corner material according to the present invention is attached, and FIG. 4 is a sectional view of a main part of a conventional synthetic tatami mat. 1... Tatami floor, 2... Foamed plastic, 3...
Soft wood wool board, 4...Tatami surface, 5...Sewing thread, 7...
Corner material.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A synthetic tatami mat consisting of a tatami face and a tatami bed, the bottom of which is made of foamed plastic, is made of synthetic resin or paper that is attached from the side to the bottom and top. The corner material is
A side wall having a length approximately corresponding to the thickness of the tatami floor, a bottom wall rising from one end of this side wall at an angle of 90 degrees or more, and a bottom wall rising from the other end of this side wall at an angle of less than 90 degrees. A synthetic tatami corner material comprising a bottom wall and an upper wall rising in the same direction, and having a thickness such that a tatami sewing needle can pass through it, that is, a thickness of 0.1 to 3.0 mm. (2) The corner material is made of polyvinyl chloride,
The synthetic tatami corner material according to claim 1, which has a thickness of 0.5 to 1.0 mm. (3) The corner material is made of a laminate of paper and synthetic resin or paper impregnated with synthetic resin, and
The corner material for synthetic tatami according to claim 1 of the utility model registration claim, characterized in that it has a thickness of 1.0 mm. (4) Utility model registration claim No. 1 characterized in that the side wall and bottom wall of the corner material form an angle of 95 to 105 degrees, and the side wall and top wall form an angle of 75 to 85 degrees. The corner material for synthetic tatami according to item 1.