JPH0647477Y2 - Base structure for golf driving range - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a ground structure for a golf driving range, and more particularly to a ground structure for a golf driving range described above in which the ball does not become dirty and the ball collecting operation is easy. is there.

(Prior Art) A golf driving range is generally constructed by providing a batting (6) on one side of the field surrounded by a fence (5) and laying ball collecting grooves (4) on both sides as shown in FIG. Is
The base (2) has traditionally been laid with natural grass, and the hit ball remains on the base, and the ball is collected by human hands at night after the practice hours are over, and it takes a lot of time. And cost money.

Therefore, in order to save the time and effort described above, a carpet is laid on the surface of the base instead of natural grass, and the base is graded so that the hit ball rolls into the groove provided at the end of the practice field and the effort of collecting the ball is reduced. Significant reductions are being made.

(Problems to be solved by the invention) However, in the case of the above-mentioned base structure, since the carpet is usually made of synthetic resin, friction occurs when the hit ball falls on the upper surface of the carpet while rotating, and the friction The synthetic resin melts due to heat and adheres to the golf ball,
It happens that the ball becomes dirty and must be cleaned.

Moreover, in terms of collecting balls, since the carpet has hairs on the surface, the slope of the surface must be about 8 to 12% in order to ensure that the ball rolls down. The problem that the amount of embankment increased due to the earth work on the surface and the steep slope caused the ball hitting direction to change to the bottom of the slope, giving the practitioner an unnatural feeling.

Further, regarding the groove for collecting the balls, secondary concrete products such as U-shaped grooves are used, and there were many problems that the balls were damaged at the time of collecting the balls and deteriorated and aged severely.

The present invention addresses the above-mentioned problems, and in particular, by devising the surface structure of the ground soil, the golf driving ground base structure and the structure for collecting balls have elasticity similar to natural turf, and the hit ball rotates rapidly. Even if you are on the ball, you can collect the ball with a slight gradient so that it does not get dirty when you land it, you do not feel uncomfortable for the practitioner, and there is no damage to the ball when collecting it. The purpose is to do.

(Means for Solving the Problems) In the present invention that achieves the above objects, a rubber sheet is laid on the surface of soil having a uniaxial compressive strength of 10 to 30 kg / cm ² as a ground structure for a golf driving range.

Further, the present invention is for a ball-collecting device in which the above-described base structure is provided with a gradient of 2 to 3%, and a groove for collecting a golf sheet is provided on the surface under the sloped surface of the structure. The base structure including the structure was adopted.

In addition, it is effective that the rubber sheet laid in each of the above structures has a thickness of about 0.8 to 3.0 mm.

(Operation) When a golf driving range is constructed by using the above-described base structure, the rubber sheet is not melted by the frictional heat generated at the time of hitting the ball, and dirt is not attached to the ball. Further, the surface of the rubber sheet is relatively smooth as compared with the surface of a carpet or the like having hairs, and the provision of a slight gradient ensures that the ball rolls down.
Furthermore, when collecting balls by covering the surface with a rubber sheet in the collecting groove for collecting balls rolled by the gradient,
Do not damage the ball.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing the foundation of the ground structure of a golf driving range of the present invention. In the figure, (1) shows the ground structure, and the same ground with rubber sheet (3) laid on the surface of soil (2). In the structure (1), the soil (2) has a uniaxial compressive strength in the range of 10 to 30 kg / cm ² in order to obtain elasticity similar to that of a base made of natural grass. Specifically, the soil is strengthened by mixing a cement-based or lime-based soil improving material, such as cement, into the soil and converting the soil into soil cement.

In addition, a special soil improving material for light and weak ground is used especially when the soil is weak.

In these cases, the mixing ratio of the soil conditioner varies depending on the soil quality, but taking that point into consideration, the mixing ratio in the range of 0.5 to 10% is preferable, and usually about 3 to 5% is sufficient for strengthening. If the content is small, the soil will be soft and the ball will not bounce too much, and if it is too large, the ball will bounce too much.

Therefore, in order to obtain elasticity similar to that of natural grass, it is most preferable to improve the soil within the above range.

The rubber sheet (3) laid in the above-mentioned base structure is not particularly limited, but an ethylene / propylene / terpolymer having excellent weather resistance is preferable,
Usually, a thickness of 0.8 to 3.0 mm is used.

If the thickness is less than the above range, the strength is insufficient and the ball cannot withstand the impact of a hit ball. On the contrary, if the thickness is thick, the bounce of the hit ball is affected and the customer feels unnatural.

Further, the rubber sheet (3) is an integral one having a two-layer structure, and it is also possible to use one having a color rubber such as green on the surface layer to improve the appearance.

By taking the laminated structure of the soil (2) and the rubber sheet (3) as described above, the ground structure (1) does not stain the golf ball, and the driving range is greatly reduced compared to natural grass in terms of maintenance. Can be obtained.

And since the surface of such a base structure has no hair compared to conventional natural grass and carpet, the ball rolls easily,
Therefore, it becomes possible to facilitate the ball collection work by utilizing it.

FIG. 2 shows an embodiment of the golf driving range base structure of the present invention in which a structure for collecting balls is added.

The base structure (11) in the present embodiment, after the hit ball has landed,
The soil (12) is piled up so that the central part of the ground is the summit (15) and descends toward both sides in order to collect from the ground to the grooves (14) on both sides. The rubber sheet (13) such as is laid.

The soil (12) is, of course, soil-improved as described above.

In this case, the surface of the rubber sheet (13) is smooth, and the inclination degree of 3% is sufficient to ensure the rolling of the ball.

In general, a carpet, which is said to have balls that roll more easily than natural grass, requires a slope of about 10%, but in the case of the above-mentioned present invention, the amount of soil at the time of construction is smaller than that, and for the customer as well. The change in the bouncing direction of the ball due to the large inclination is less noticeable.

FIG. 3 shows another modification of the base structure of the present invention.
A ground structure (11) is provided with a top (15) of soil (12) at the other end for collecting balls in a groove (14) on one side.

Thus, in the above structure, the groove (24) for collecting balls is formed by coating the surface of the groove mold (21), which is a secondary concrete product, with the rubber sheet (22) as shown in FIG. It is configured.

In the concrete groove, when the ball rolls down, there is a problem that the ball is damaged and the aging is fast, but by covering the concrete groove type (21) rubber sheet (22) in this way, The rubber seat of the ball serves as a cushion and is not damaged, and the life of the ball is extended.

The rubber sheet (22) is the same as the one laid on the surface of the above-mentioned base structure, and a rubber sheet (13) made of EPDM having weather resistance and having a thickness of about 0.8 to 3.0 mm is used. To be

Combining the base structure and the structure for collecting the balls including the collecting grooves makes it easy to maintain and reduces the collecting work, and the golf driving range illustrated in FIG. 5 can be obtained so that the ball does not get dirty. .

(Effects of the Invention) The ground structure of the present invention has the above-described structure. At the driving range, the ground structure is a rubber sheet laid on the soil having the appropriate hardness as described above. By doing so, the rubber sheet does not adhere to the ball due to frictional heat or the like, and the ball does not become dirty.

Moreover, the soil is set to an appropriate hardness, and the ball bounces are no better than natural grass.

Furthermore, by providing a surface inclination with the above-mentioned base structure, the balls gather under the inclination, and the rubber sheet has a smoother surface than grass or carpet, so a slight inclination ensures that the balls The amount of embankment for rolling and tilting is small, and the bouncing of the ball is similar to that of a flat surface.

The balls rolled due to the inclination are collected in the ball collecting groove, but by coating the surface of the groove with a rubber sheet, the ball is not damaged and the durability of the ball can be increased.

Thus, by combining the above configurations, the ball does not become dirty and there is no need for leveling, so maintenance is easy, and the ball collection work is greatly reduced, and the ball is not damaged by the ball collection groove. Moreover, the bouncing of the ball is similar to natural turf, and it is possible to create a comfortable golf driving range that does not give an unnatural feeling to the customer.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a base structure according to the basis of the present invention,
2 is a cross-sectional view of an example of a base structure for collecting balls according to the present invention, FIG. 3 is a cross-sectional view showing a modified example of the base structure for collecting balls, and FIG. 4 is a cross-sectional view of a collecting groove. FIG. 5 is a schematic view showing the overall structure of the driving range. (1), (11) …… Substrate structure, (2), (12) …… Soil, (3), (13) (22) …… Rubber sheet, (14), (24) …… Collecting groove , (15) …… top, (21) …… groove type,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Etsuji Uenoyama, 3-1-23-1203, Hondan, Tarumi-ku, Kobe city, Hyogo prefecture (56) Reference JP-A-49-31433 (JP, A) -130079 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A uniaxial compressive strength of 10 to 30 kg / cm ² and ² to 3%
A golf practice characterized in that a rubber sheet with a thickness of 0.8 to 3.0 mm is laid on the surface of the graded soil, and a collecting groove with the surface covered with a rubber sheet is provided below the graded surface. Base structure for the field.