JP2540448Y2 - Golf driving range - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a golf practice range, and more specifically, a golf practice in which a ball can be automatically collected by setting a slope on a ground, so that the ball can be easily collected. It is about the place.

(Prior art)

A golf practice range generally has a structure in which a bat is provided on one side of a site surrounded by a fence, the base of which is conventionally laid with natural grass, the hit ball stays on the ground, and the ball collecting work is performed on a practice ground. It is performed manually at night or the like after the end of the business hours, and it requires a lot of time or expenses such as labor costs and certification costs.

In order to save such labor, carpets and artificial turf are laid in place of natural turf on the ground surface, and the ground is steeply inclined so that the hit ball rolls down into the groove provided at the end of the practice field etc. There is a driving range where the effort of the ball is greatly reduced.

[Problems to be solved by the invention]

However, at the driving range where the pitch is steeply inclined and the ball can be collected automatically as described above, even if the trainee hits the ball, the ball does not remain on the ground and it quickly enters the ball collecting groove. This could lead to visual dissatisfaction among the trainees.

In addition, in the case of the above-mentioned groundwork, carpets and artificial turf are usually made of synthetic resin, so that when a hit ball rotates and falls on the upper surface thereof, friction occurs, and the synthetic resin melts due to the frictional heat. It happened that it got stuck on the golf ball and the goal got dirty and had to be cleaned.

In addition, carpets and artificial turf have hair on the surface of the ball, and the surface gradient must be about 8 to 12% to ensure that the ball rolls down. There was a problem that the amount of embankment increased due to earthwork on the foundation surface, and because the slope was a sphere, the direction of hitting was inevitably changed downward on the slope, giving the trainer an unnatural feeling.

Further, regarding the grooves for collecting balls, secondary concrete products such as U-shaped grooves are used, and when collecting the balls, the balls are often damaged, and the deterioration and aging are severe.

The present invention solves the above-mentioned problems, and has good ball-collecting properties.
A certain amount of ball remains on the ground and there is no sense of incongruity, and it is easy to collect temporarily remaining balls, and the ground has elasticity similar to natural turf, and the hit ball is rotating rapidly Also, the ball can be collected with a slight gradient so that dirt does not adhere to the ball at the time of landing, and it has a bouncing property that does not make the trainee feel unnatural. The purpose is to eliminate it.

[Means for solving the problem]

In order to achieve the above object, the present invention is a golf driving range having a structure in which a ground is inclined and a ball is automatically collected, and it is possible to make a slope by lifting a part, An uneven planar body composed of a net or a grid having a mesh through which a golf ball penetrates is laid as a target green on a ground surface of a golf driving range.

Furthermore, the uniaxial compressive strength is 10 ~ 30kg / c to improve the base.
golf driving range that was laying the rubber sheet on the surface of the soil of the m ² are also included.

[Action]

At a golf driving range with a slope on the ground, the hit ball rolls on the ground and is collected in a ball collecting groove, but the ball where the rolling was stopped by the unevenness of the surface is placed in the part where the uneven body was laid. It will remain and become the target green.
Then, by using a net having a large mesh as the uneven planar body, the ball stays there while the net is placed on the ground, but when the net is lifted, the ball passes through the mesh and the inclined bottom is obtained. It falls to the ground and rolls into the collecting groove.

Furthermore, by employing a rubber sheet on the base surface, the ball is not melted by frictional heat generated at the time of hitting a hit ball, and no dirt is attached to the ball. Also, the surface of the rubber sheet is relatively smoother than the surface of an object having hair, such as a carpet, and the ball is reliably rolled down by providing a slight gradient. Furthermore, the ball is not damaged during ball collection by coating the surface of the ball with a rubber sheet on the ball collecting groove for collecting the ball rolled by the gradient.

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

〔Example〕

FIG. 1 is a schematic diagram showing the overall configuration of a driving range according to the present invention. The golf driving range 1 is surrounded by fences 5 on all sides, and a bat 6 is provided on one side, and a trainee hits a ball from the bat. The hit ball falls on the ground 7, but the ground 2 is formed by mounting the rubber sheet 3 on the surface by piled up the soil 2 so that the ground has a peak 15 at the center and descends in the lateral direction. Then, a net 8a is laid on the base 7 as an uneven planar body 8 made of a net or lattice having a mesh through which a golf ball to be a target green locally penetrates.
Therefore, the trainee can aim at the net 8a, which is the uneven body 8 laid on the ground 7, as the target green, and the ball 12 riding on the net 8a is stabilized without moving.

Also, as shown in FIGS. 1 and 2, the end of the net 8a is fixed at a plurality of locations, such as anchor hooks F, so that the net 8a does not stretch, and the rope 9 is attached near the center to practice. Pulley 11 on a wire 10 passing over the field
By hanging the rope 9 on the outside of the fence 5 via the pulley 4 provided at the end of the wire 10, and pulling the rope 9 from the outside of the fence in the direction of the arrow in the figure. Lift the center of the net 8a
The ball 12 remaining on 8a passes through the mesh 31 and falls on the ground 7.

FIG. 3 is a cross-sectional view showing the underlying structure of the golf driving range according to the present invention. In FIG. 3, reference numeral 7 denotes the underlying structure, and the rubber sheet 3 is laid on the surface of the soil 2. When the uniaxial compressive strength is in the range of 10 to 30 kg / cm ² , it is possible to obtain elasticity similar to that of a base made of natural grass. In order to obtain such soil 2, concretely, a cement-based or lime-based soil improver such as cement is mixed into the soil,
The soil is strengthened by using soil cement as soil cement. Further, especially when the soil is weak, a special soil conditioner for soft ground is used.

In these cases, the mixing ratio of the soil conditioner varies depending on the soil properties, and taking into account that point, a mixing ratio in the range of 0.5 to 10% is preferable, and usually about 3 to 5% is sufficiently reinforced. If the mixing ratio is small, the soil is soft and the ball does not bounce much, and if it is too large, the ball bounces too much.

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

In addition, the rubber sheet 3 laid in the base structure
Is not particularly limited, ethylene propylene terpolymer excellent in weather resistance is preferable, usually,
Its thickness is 0.8 to 3.0 mm. If the thickness is smaller than the above range, the strength is insufficient, and the impact of the hit ball cannot be sustained. On the other hand, if the thickness is thicker, the bounce of the hit ball is affected, giving an unnatural feeling to the customer.

Further, the rubber sheet 3 may be of a two-layer structure and provided with a color rubber such as green on the surface layer to improve the appearance.

Regarding the gradient of the base 7, the degree of inclination of 2 to 5% is sufficient to ensure that the surface of the rubber sheet is smooth and the ball rolls reliably. In general, carpets, which can be said to be easier to roll than natural turf, require a slope of about 10%. However, in the case of the present invention, the amount of soil to be filled at the time of construction is smaller than that of the carpet, and the customer is inclined. The change in the ball's bouncing direction due to is less noticeable.

FIG. 4 shows another modified embodiment of the golf driving range according to the present invention, which has a structure of a ground 7 provided with a top 15 of the soil 2 at the other end to collect balls in a groove 14 on one side. And
The net 8a is located on a slope away from the top 15.

In the above configuration of such a golf driving range, the ball collecting groove 14 is formed by covering the surface of a groove mold 21 which is a secondary product of concrete with a rubber sheet 22 as shown in FIG. Have been. In general, a concrete groove has a problem that the ball is damaged when the ball rolls down and the ball ages quickly.However, by covering the rubber sheet 22 with the concrete groove 21 in this way, the rubber sheet becomes The ball is not damaged and becomes a cushion, and the life of the ball is extended.

The rubber sheet 22 is the same as that laid on the surface of the above-described base structure, withstands the impact of a hit ball, and is made of an ethylene-propylene terpolymer having weather resistance of 0.8 to 0.8.
A rubber sheet having a thickness of about 3.0 mm is used.

Combining these base structures and ball-gathering structures including the ball-gathering groove makes maintenance easier and reduces ball-gathering work.
A driving range where the ball is not soiled is obtained.

The irregular body 8 can be used as the
Any net may be used as long as it has a mesh, such as a net made of a synthetic fiber having flexibility as shown in FIG. 7 and FIG. However, the size of the mesh 31 is larger than that of the golf ball 12, and
Ball 12 must easily pass through 31,
Usually, the shape of the mesh 31 is larger than a circle having a radius of 2.3 cm.

When the flexible net 8a is used, the ball 12 falls through the mesh and falls on the base 7 by lifting the central portion of the net 8a as shown in FIG. It is recommended that the end of the net 8a be fixed to the base 7 so that it is placed on the base 7 while being spread to its original position. However, in order not to prevent the ball from rolling, it should be fixed only at key points. When the net 8a is further lifted, there must be sufficient clearance between the end of the net and the base to allow the ball to pass therethrough.

When using a grid 8b formed of hard rods as the uneven planar body 8, the entire grid 8b may be lifted. However, as shown in FIG. A method in which the lower side, that is, the side with the ball collecting groove 14 is lifted is preferable.

〔effect〕

The present invention has the above-described configuration, and in a golf driving range, a golf ball is hit by laying an uneven flat body made of a net or a grid having a mesh through which a golf ball penetrates as a target green on a sloped base. Remains on the uneven portion of the uneven planar body, and does not give the trainee a sense of discomfort. Since the uneven body has a structure that can be inclined, it is possible to drop the remaining ball without any trouble.

In addition, since the base material uses a rubber sheet laid on soil having an appropriate hardness as described above, the rubber sheet does not melt due to frictional heat or the like and adheres to the ball, The ball can be prevented from becoming dirty, and the ball can be bounced in a manner similar to that of natural grass.

Furthermore, by adopting a rubber sheet on the surface, the surface is smoother than turf, carpet, artificial turf, etc., the ball rolls reliably with a slight gradient, the amount of embankment is small, the angle of ball bouncing It is not much different from that of a flat surface. The balls that have rolled down are collected in the ball collecting groove. By coating the surface of the groove with a rubber sheet, damage to the ball can be prevented, and the durability of the ball can be increased.

Thus, in the present invention, maintenance is easy because the ball is not stained and there is no need for leveling, the ball collecting work is greatly reduced, and a certain amount of ball can be left on the ground, The bouncing can also create a comfortable driving range that does not give the practicer an unnatural feeling similar to natural grass.

[Brief description of the drawings]

FIG. 1 is a schematic view showing the overall configuration of a golf driving range according to the present invention, FIG. 2 is a sectional perspective view showing lifting of an uneven planar body, FIG. 3 is a sectional view showing a base structure, and FIG. Is a cross-sectional view of a golf driving range showing another embodiment, FIG. 5 is a cross-sectional view of a ball collecting groove, FIG. 6 is a plan view of a net which is an uneven flat body, and FIG. 7 is an uneven flat body. It is a sectional perspective view showing a place where a lattice is raised. 1… Golf driving range 2… Soil 3, 22… Rubber sheet 5… Fence 6… At bat 7… Base 8… Flat surface 8a… Net 8b… Grid 9… Rope 10… … Wires 4, 11… pulleys 12… golf balls 31… mesh F …… anchor hooks

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshitaka Higashida 4-1-1-21 Hamazoedori, Nagata-ku, Kobe City, Hyogo Prefecture Inside Mitsuboshi Belting Co., Ltd. (72) Inventor Kenji Wakasugi 4-1-1, Hamazoedori, Nagata-ku, Kobe City, Hyogo Prefecture. No. 21 Examiner in Mitsuboshi Belting Co., Ltd. Satoshi Ishii (56) References JP-A-62-14871 (JP, A) JP-A-53-124773 (JP, U)

Claims (3)

(57) [Scope of request for utility model registration] 1. A golf driving range having a structure in which a base is provided with a gradient to automatically collect balls, a golf club having a net or lattice having a mesh through which a golf ball penetrates as a target green. A golf driving range, which is locally laid on a ground surface of a driving range, and which can be inclined by lifting a part of the uneven planar body. 2. An uneven flat body according to claim 1, wherein an end portion of the uneven flat body is fixed to a base, and a part of the uneven flat body that is not fixed to the base is lifted to be inclined. Golf driving range. 3. The driving range according to claim 1, wherein the base has a uniaxial compressive strength of 10 to 30 kg / cm ² .