JPH0128086Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a tennis court surface material.

Tennis has become increasingly popular in recent years, and the number of players has also increased. Along with this, a tennis court has been added. Grass is originally considered the best choice for tennis courts, but because of the enormous maintenance costs, clay courts have traditionally been used. However, although clay courts are relatively inexpensive to construct, they are susceptible to rainy weather, and it requires considerable effort and expense to maintain a certain level of hardness and an almost perfectly straight surface. For this reason, courts made of concrete or artificial turf are increasingly being used in recent years. Concrete courts are inexpensive to construct and maintain, but the surface is too hard and has no elasticity, which puts impact loads on players' legs, especially their joints and feet, which can have a negative impact. However, the construction costs are high, and the adverse effects on the human body are only slightly improved compared to concrete courts.Additionally, a new problem of high heat generation on sunny days has arisen, and an improvement has been desired.

The purpose of this invention is to solve the above-mentioned problems and provide a surface material for tennis courts that is relatively inexpensive, allows players to play with a feel similar to natural grass, and does not require much maintenance cost. It is.

The present invention combines straight and/or wound synthetic resin fiber filaments into a pine-like material of a predetermined size by three-dimensionally intertwining the filaments with voids and gluing the intertwined portions together. The locking material is fixed to the surface of the base material, and fine particles or pieces are mixed into the internal space of the locking material.

The embodiments shown in the drawings will be described below.

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG. 2 is a sectional view of a portion thereof.

1 in the figure is a lock material, in which straight and/or wound synthetic resin fiber filaments such as polyamide, polypropylene, polyester, polyvinyl chloride, pyrivinylidene chloride, etc. are arranged three-dimensionally with large voids. They are formed by intertwining them and gluing the intertwined portions together, and are made into a mat with the outer shape set to a predetermined size. Therefore, its interior is mostly space.

The locking material 1 is fixed to a flat base material 2, for example, a sheet material made of synthetic resin, by adhesive or the like. In the space of the locking material 1, fine grains/fine pieces 4 such as fine grains or pieces made of sand, plastic, rubber, wood chips, and mineral substances are accommodated individually or mixed in any combination. has been done. The granules/stripes described above provide the desired tennis court surface condition,
For example, they are appropriately selected or mixed in an appropriate ratio, taking into account the drainage effect, the coefficient of repulsion with the ball, etc., and the construction cost of the tennis court.
The fine grains/fine pieces 4 are mixed in before the tennis court surface material is laid on the tennis court, and the fine grains/fine pieces 4 are hardened together with the locking material to some extent in advance to prevent them from falling during the stretching work. Alternatively, it may be mixed in at the time of installation. The thickness of the locking material 1 and the amount of fine particles/fine pieces to be mixed are determined in relation to the desired surface hardness and elasticity of the tennis court.

The base material 2 is in the form of a flat plate, and is determined by its adhesion to the locking material 1, durability after being stretched onto a coat, etc. From this point of view, a sheet made of, for example, a synthetic resin is preferable. An adhesive part 3 is provided on the back side of the base material 2 so that when the base of the coat is concrete, it can be easily attached to the base.
The adhesive section 3 is composed of an adhesive layer 31 coated on the back surface of the base material 2 and a release paper 32 adhered onto the adhesive layer 31. This release paper 3
2 makes it easier to handle the tennis court surface material before it is stretched, and at the time of tensioning, it is possible to easily tension it by simply peeling it off.

Furthermore, if the base material 2 is provided with a plurality of permeable holes that allow water to pass through, water can drain well even in rainy weather, and play can be started relatively quickly after the weather improves.

In order to fix the locking material 1 to the base material 2, in addition to the above-described method, for example, a plurality of hooking pieces 21 that are hooked to the bottom of the locking material 2 are provided on the surface of the base material 2 as shown in FIG. Good too. The hooking pieces 21 are preferably curved in different directions, as shown in the figure, so that they can be hooked to the locking member 1 in the horizontal and vertical directions. Further, the above-mentioned hanging piece 21 can be molded integrally with the base material 2 as shown in FIG.
If this is not preferable in terms of manufacturing costs, a plurality of holes 22 may be provided in the base material 2, and a hooking piece 21 having an annular protrusion 23 may be fitted therein, as shown in FIG. .

As described above, in the present invention, fine particles/stripes are mixed into the internal space of the rock material fixed to the base material, so if this is used as a surface material for a tennis court, the rock material and Since the mixed fine particles/stripes exhibit elasticity, the player can play with a feel similar to that of natural grass, and there is no impact that would adversely affect the player's legs or the like.

Locking materials are available at extremely low prices, and tennis court surface materials using them are also inexpensive.

The granules/stripes can be made from sandy soil or other waste products, which is advantageous in terms of economy.

In rainy weather, immediately after the weather recovers, water becomes fine particles/
Since it is absorbed into the strips, you can play without slipping and improve the utilization of the tennis court.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional perspective view of a tennis court surface material according to an embodiment of the present invention;
FIG. 3 is a perspective view showing another embodiment of the base material;
This figure is an enlarged cross-sectional view of the locking piece in FIG. 3, and FIG. 5 is an enlarged cross-sectional view showing a modification of the locking piece. DESCRIPTION OF SYMBOLS 1...Lock material, 2...Base material, 21...Hatching piece, 3...Adhesive part, 4...Fine grain/fine piece.

Claims (1)

[Claims for Utility Model Registration] (1) Straight and/or coiled synthetic resin fiber filaments are three-dimensionally intertwined with voids and the intertwined portions are bonded to form a mat shape of a predetermined size. A tennis court surface material comprising a locking material fixed to the surface of a flat base material and fine particles or pieces mixed into the internal space of the locking material. (2) Granules/stripes include one or more of the following, arbitrarily selected: sandy soil, plastic granules or chips, rubber granules or chips, wood chips, and mineral grains or chips. The tennis court surface material according to claim (1) of the utility model registration, characterized in that it is a mixture of the following. (3) Utility model registration claim No. 1 characterized in that the base material and the locking material are fixed by adhesive.
The tennis court surface material described in (1). (4) The tennis court surface material according to claim (1) of the utility model registration, wherein the base material has a plurality of hooking pieces on its surface that are hooked to the bottom of the locking material. (5) The tennis court surface material according to claim (1) of the utility model registration, characterized in that an adhesive portion is provided on the back surface of the base material. (6) The tennis court surface material according to claim (1) of the utility model registration, characterized in that the base material is provided with a plurality of permeable holes that allow water to pass through. (7) Synthetic resin fiber locking materials include polyamide, polypropylene, polyethylene, polyester,
The tennis court surface material according to claim (1) of the utility model registration, characterized in that it is made of one of polyvinyl chloride and polyvinylidene chloride.