JPH0849209A - Backing material for artificial lawn - Google Patents

Abstract

PURPOSE:To effectively improve cushion ability and draining ability in an artificial lawn, and to reduce a burden to a leg and a waist, and to maintain these functions for a long term. CONSTITUTION:In a backing material for an artificial lawn 3 which is laid between an artificial lawn 3 into a mat-shape and the ground, a backing body 4 is formed out of an elastic material such as synthetic resin and rubber having cushion ability. The backing body 4 is provided with many draining thin holes 5... piercing from the surface to the back side. In the draining thin hole 5, its lower part is formed so as to be larger in diameter in comparison with an upper part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base material laid between artificial turf and the ground. More specifically, it effectively imparts cushioning properties to the artificial turf to reduce the burden on the legs and feet, and The present invention relates to a technique for improving drainage of artificial turf and maintaining such a function for a long period of time.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 4, when constructing an artificial turf 3 in which a synthetic resin artificial turf material 2 is planted on a base material 1, it is necessary to provide a sufficient drainage property outdoors. In order to obtain it, it is laid on, for example, a permeable asphalt a or the like that is finished to have a flat surface and is treated so that drainage can be easily performed. In addition, if it is indoors, the cushioning property is emphasized, and it is laid on, for example, soil b finished to a substantially flat surface.

[0003]

By the way, although the drainage property is eliminated by laying it on the permeable asphalt a, the cushioning property becomes poor, and in particular, a sport that requires spikes and requires instantaneous power, For example, a player such as a baseball player or a soccer player has a problem in that his / her legs are easily strained, a breakdown is likely to occur, and a player's life is shortened. Then, in an indoor where there is no rainfall, the cushioning property is emphasized, and sufficient cushioning property is obtained at the initial stage of laying the artificial grass 3 on the soil b, but after a lapse of years, the surface soil b is hardened and the cushioning property becomes poor. And in the place where watering is done,
Drainage was poor and it was necessary to perform draining work with a mop.

The present invention has been made in view of the above problems, and an object of the present invention is to effectively impart cushioning properties to artificial turf to reduce the burden on the legs and waist and to make the artificial turf. The purpose of the present invention is to provide a base material for artificial turf which can improve the drainage property in the above and can maintain such a function for a long period of time.

[0005]

According to a first aspect of the present invention, there is provided a base material for artificial grass laid between the artificial grass 3 and the ground, the base body 4 being made of synthetic resin or rubber having cushioning properties. Made of an elastic material such as a product, formed in a matte shape, and a large number of drainage pores 5 ... Penetrating from the front surface to the back surface are formed in the base body 4. It is characterized by being formed in a large diameter.

According to a second aspect of the present invention, there is provided a base material for artificial grass laid between the artificial grass 3 and the ground, wherein the base body 4 is made of an elastic material such as synthetic resin or rubber having cushioning properties. The base body 4 has a large number of drainage pores 5 penetrating from the front surface to the back surface, and the bottom surface of the base body 4 has a protrusion protruding downward from the lower edge of the drainage pores 5. It is characterized in that a large number of parts 6 ... Are formed.

[0007]

In the first aspect, the base body 4 is laid between the artificial grass 3 and the ground. The mat-like base body 4 has a cushioning property, and when it is laid on, for example, a permeable asphalt a, it compensates for the lack of cushioning property in the asphalt a. A large number of drainage pores 5 that penetrate the front and back
At, the base body 4 is elastically deformed well. That is,
The cushioning property of the base body 4 in the shearing direction is increased. In this way, the drainage pores 5 ...
By increasing the cushioning property in the shearing direction, the base body 4 itself adopts a material that is strong in the thickness direction, and avoids deterioration of the elasticity of the base body 4 even during long-term use. Maintain the desired function for a long time.
Then, the rainwater that has passed through the artificial turf 3 is satisfactorily drained from the drainage pores 5 ... With a large number of drainage pores 5 ... The problem of drainage in the artificial grass 3 is solved. By laying the artificial grass 3 on the soil b, for example, by interposing the base material A, not to mention the initial stage of construction,
Even after many years have passed, the cushioning property of the base body 4 is maintained. A large number of drainage pores 5
・ Perform good drainage from.

In particular, the drainage pores 5 are formed such that the lower part thereof has a larger diameter than the upper part thereof, and the drainage pores 5 have a wide bottom part and spread the invading water in the drainage pores 5 having a wide bottom part. To drain. Good drainage. Avoid clogging the drainage pores 5 at the bottom. Base body 4 on the soil b
Will be advantageous in the construction of laying. In the second aspect, in particular, the lower surface of the base body 4 is provided with a large number of projections 6 ... Which project downward from the lower edge of the drainage pores 5, and the projections 6 are grounded to drain the drainage pores 5. Avoid touching the bottom edge of the ground. A gap d is formed between the lower edge of the drainage pore 5 and the ground. Drains well even with non-permeable asphalt a. Even when constructing on the soil b, the clogging of the drainage pores 5 is avoided.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment, (a) is a plan view of the whole, and (b) is a side view. Base material A
Is laid between the artificial turf 3 in which the synthetic resin artificial turf material 2 is planted on the base material 1 and the ground. The base body 4 of the base material A is formed in a mat shape with an elastic material such as synthetic resin or rubber having cushioning properties.
The base body 4 has drainage pores 5 that penetrate from the front surface to the back surface.
Are formed in large numbers. These drainage pores 5 have a cylindrical hole 5a at the upper part and a bowl-shaped hole 5b at the lower part. Thus, the lower part of the drainage pore 5 is formed to have a larger diameter than the upper part. Such a base body 4 has a length Y and a width X of about 1 m and a thickness T of about 40 mm, and the drainage pores 5 and the diameter of the cylindrical hole 5a are about 5 mm. The maximum diameter of the bowl-shaped holes 5b is about 15 mm, and the vertical and horizontal pitch P of the drainage pores 5 is about 40 mm, but it goes without saying that the size is not limited to such a size.

By the way, on each side of the base body 4, there are formed a fitting concave portion 7 which becomes narrower toward the outside and a fitting convex portion 8 which becomes wider toward the outside. Then, the adjacent base materials A, A are
The fitting protrusions 8 are fitted in the fitting recesses 7 in the thickness direction so as to be connected. Also in the fitting concave portion 7 and the fitting convex portion 8, the drainage pores 5 are formed in accordance with the pitch P described above. That is, the base material A is manufactured by cutting the drainage pores 5 from a long sheet material formed with the above pitch P into the above-described vertical and horizontal dimensions.

As shown in FIG. 1 (c), however, by laying the base material A between the artificial turf 3 and the ground, the mat-shaped base body 4 has cushioning properties, for example, permeation. When it is laid on the asphalt a, it provides a sufficient cushioning property by compensating for the insufficient cushioning property of the asphalt a. In this case, the base body 4 is favorably elastically deformed in the large number of drainage pores 5 ... In other words, by increasing the cushioning property of the base body 4 in the shearing direction, and thus increasing the cushioning property of the base body 4 in the shearing direction, the base body 4 itself adopts a material that is strong in the thickness direction. Even when used for many years, deterioration of the elasticity of the base body 4 is avoided, and the desired function is maintained for a long time.

The rainwater that has passed through the artificial turf 3 is well drained from the drainage pores 5 ... With a large number of drainage pores 5 ... In this way, the problem of drainage in the artificial grass 3 is solved.
Then, by laying the artificial grass 3 on the soil, for example, by interposing the base material A, the cushioning property of the base body 4 can be maintained not only at the initial stage of construction but also after a lapse of years. And, even in the place where water is sprinkled, good drainage can be performed from the large number of drainage pores 5.

By the way, the lower part of the drainage pore 5 is formed to have a larger diameter than that of the upper part thereof. The drainage pore 5 has a wider bottom part and spreads the invading water in the drainage pore 5 whose bottom part becomes wider. The drainage is done well and the drainage is done well. Then, the drainage pores 5 can be prevented from being clogged in the lower part, which is also advantageous in the construction of laying the base body 4 on the soil.

FIG. 2 shows a second embodiment in which the drainage pores 5 in the above-mentioned embodiment are cylindrical holes 5a and tapered holes 5c.
And is formed in a trumpet shape, and in particular, on the lower surface of the base body 4, a projection 6 protruding downward from the lower edge of the drainage pore 5 with the same pitch as the drainage pores 5 ... .. are formed in large numbers. The projection 6 is formed in a substantially square shape when viewed from the bottom surface, but it goes without saying that it may have another shape. The height of the protrusion 6 is about several millimeters, but the size is not particularly limited. The other structure is the same as that of the first embodiment.

In the second embodiment, however, the construction is the same as that of the first embodiment, and in particular, the lower surface of the base body 4 has projections 6 protruding below the lower edges of the drainage pores 5. By forming a large number of circles, it is possible to prevent the protrusion 6 from being grounded and the lower edge of the drainage pore 5 being grounded. Then
A gap d can be formed between the lower edge of the drainage pore 5 and the ground. As shown in FIG. 2D, drainage grooves a, b, c and d are vertically and horizontally provided on the periphery of the drainage pore 5. In this case, the drainage can be satisfactorily performed even on the ground of the non-permeable asphalt a and the like, and the clogging of the drainage pores 5 can be further avoided when the soil is applied on the soil b.

[0016]

According to the first aspect of the present invention, there is provided a base material for an artificial grass laid between the artificial grass and the ground, the base body being an elastic material such as synthetic resin or rubber having cushioning properties. Since it is formed in a mat shape with a large number of drainage pores penetrating from the front surface to the back surface in the base body, by laying the base body between the artificial grass and the ground, Has a cushioning property, for example, when it is laid on a permeable asphalt, it compensates for the lack of cushioning property in the asphalt and imparts sufficient cushioning properties, and in particular, it has a large number of drainage pores penetrating the front and back. By forming it, the base body can be elastically deformed well in each drainage pore, and more specifically, the cushioning property of the base body in the shearing direction can be increased. Therefore, the base body itself can adopt a material that is strong in the thickness direction, it is possible to avoid deterioration of the elasticity of the base body even after long-term use, and it can be used satisfactorily for a long period of time. Rainwater that has passed through the artificial turf can be satisfactorily drained from the drainage pores with a large number of drainage pores formed penetrating the base body, and the problem of drainage in artificial turf can be solved.
When laying artificial turf on the soil, for example, the cushioning property of the foundation body can be maintained not only at the beginning of construction but also over the years, and good drainage can also be obtained from the large number of drainage pores even at the places where water is sprinkled. Has the advantage that

In particular, since the lower part of the drainage pore is formed to have a larger diameter than that of the upper part, the drainage pore has a wider bottom part, and the water that has penetrated into the lower part can be spread and drained. And the drainage pores can be prevented from being clogged in the lower part, which is advantageous in the construction of laying the base body on the soil.

According to the second aspect of the present invention, in particular, since the lower surface of the base body is provided with a large number of protrusions which project downward from the lower edge of the drainage pores, the protrusions are grounded to the lower edge of the drainage pores. Grounding can be avoided, a gap can be formed between the lower edge of the drainage hole and the ground, drainage can be performed well even on the ground such as non-permeable asphalt, and when installing on soil Also, there is an advantage that clogging of the drainage pores can be avoided.

Therefore, according to the present invention, the cushioning property of the artificial turf can be effectively enhanced, the load on the legs and waist can be reduced, the injury and the trouble can be avoided, and the life of the athlete can be improved even when the construction is performed outdoors or indoors. To shorten the length of the turf and improve the drainage performance of the artificial turf, avoid clogging of the drainage pores for drainage, maintain the desired function for a long time, and greatly increase the commercial value of the artificial turf. There is an advantage that it can be increased.

[Brief description of drawings]

FIG. 1 shows one embodiment of the present invention, wherein (a) is a plan view,
(B) is a side view and (c) is an enlarged cross-sectional view of a construction state.

FIG. 2 is a plan view showing another embodiment of the above,
(B) is a side view, (c) is the same figure in the construction state (a)
Is an enlarged cross-sectional view taken along line ZZ of FIG.

3A is an enlarged cross-sectional view, and FIG. 3B is an enlarged perspective view mainly showing a protrusion.

FIG. 4 shows a conventional example, and (a) and (b) are sectional views.

[Explanation of symbols]

 1 Base Material 2 Artificial Grass Material 3 Artificial Grass 4 Base Body 5 Drainage Pore 6 Projection

Claims (2)

[Claims] 1. A base material for artificial grass laid between the artificial grass and the ground, wherein the base body is formed of an elastic material such as synthetic resin or rubber having cushioning properties into a mat-like shape. The base material of the artificial turf is characterized in that a large number of drainage pores penetrating from the front surface to the back surface are formed in the base body, and these drainage pores are formed so that the lower part has a larger diameter than the upper part. . 2. A base material for artificial grass that is laid between the artificial grass and the ground, wherein the base body is formed in a mat shape with an elastic material such as synthetic resin or rubber having cushioning properties. The base body is formed with a large number of drainage pores penetrating from the front surface to the back surface, and the bottom surface of the base body is formed with a large number of protrusions protruding below the lower edge of the drainage pores. Base material for artificial grass.