JPS605312B2 - practice tennis court - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to equipment that is effective for tennis practice, especially for elementary practice, and is designed to allow practice to be carried out effectively and to utilize the space of the site effectively. be.

Normally, when practicing tennis, you should use a designated court for 2 to 2 minutes.
Four players take turns hitting each other's balls across the net, and the official tennis courts are 23.774 in length and 8.229 in width for singles, and 2 in length for duffles.
It has a surface area of 3.774 mm and a width of 10.973 mm, and if you include open space on both sides and the back, you will need approximately 604 mm of land, making it difficult for beginners to hit the ball with the racket and hit the ball back in the desired direction. They have to practice a lot, and as a result, they often spend time picking up balls they missed, and even if they use a large court, they often can't practice effectively.

Although the number of tennis players has been increasing recently and tennis has become a sport for the masses, tennis courts require a large amount of land, and the number of courts is limited, making it difficult to practice sufficiently.

In view of these points, the present invention provides a practice tennis court that allows even one person to practice effectively and makes effective use of the space.The embodiment shown in the figure will be described below. .

In the figure, 1 is a semicircular ground with a radius of about 26 square meters (approximately 1061 pitches), with a back floor 2 of about 5 width on the outer periphery and 11 square feet, which is equivalent to half the length of the official tennis court, on the inside. .887 Court floor 3 with skin width A
and a ball collecting floor 4 inside, and a court floor 3.
A sideline 5 that radially divides the area into 1ag strokes, and a baseline 6 that is inscribed in the outer periphery of the court floor 3 and has a length B of 5.485 m, which is equivalent to half the baseline length of the official tennis court. Then, a service line 7 is provided inside this baseline at a distance of 5.49 mm and parallel to the baseline, and is further parallel to the baseline at the inner peripheral edge of the court floor 3, that is, at a position of 11.887 skin distance from the baseline 6. A target net 8 with a height of 0.91 kites is provided. 9 is a side net stretched from the baseline 6 to the sideline 5 at an appropriate height; 10 is a cover net stretched over the side nets 9 on both sides;
11 is a back net stretched along the outer edge of the back floor 2.

The floor surface of the ball collection floor 4 is sloped downward toward the center from about 50 skins closer to the court floor than the target net 8 on the court floor 3, and a bit 12 is provided at the center. 13 is a ball collecting groove provided inside the back net 11, 14 is a pillar of the net, and 15 is a court floor 3.
Twelve pitching machines are arranged in an arc shape on the ball collection floor 4, and pitch to each of the divided sections.

16 is a ball storage tank that supplies balls to the pitching machine via the ball throwing chute 17; 18 is a ball lifting conveyor, such as a bucket conveyor, that transports the balls in the bit 12 to the ball storage tank 16; A pipelator (not shown) is attached to the chute 17 to facilitate the feeding of the ball.

19 is a protective net, and 20 is a roof.

A switch attached to pillar 14 by the practitioner (not shown)
When you press , the opposing pitching machine 15 will start operating after a certain period of time.
The ball is hit onto the court floor as shown by the broken line in FIG.

The practitioner hits the racket back over the target net 8. The pitching machine 15 fires a ball at a predetermined interval, for example, every 3 to 4 seconds, and the pole that is hit back over the target net 8 and the ball that hits the target net 8 and rolls down the slope of the ball collection floor 4. Tsute bit 12
The spheres are collected into the ball storage tank 16 by the bucket conveyor 18. Note that the firing interval of the pitching machine 15 can be set at irregular intervals by the switch on the pillar 14, or the firing angle can be changed to select a drop shot or a lobing. A ball that the practitioner fails to hit will hit the side net 9 or the cover net 101 and fall onto the flat surface of the court floor 3, or fall onto the back floor 2, so the ball must be picked up and recovered after the pitching machine 15 has finished firing. If possible, the poles that have entered the ball collecting groove 13 under the back net 11 can be collected by providing an inclined groove or a conveyor.

In this way, the practitioner can practice hitting the ball by himself by operating the pitching machine, and the ball that fails to hit the target net 8 will hit the side net 9 and the cover net 10. In this example, 12 people can practice at the same time on the 1061 court, and the ball that is hit back is automatically sent to the pitching machine 1.
It will be collected on 6th.

In the above embodiment, the ground 1 is made into a semicircular shape with a radius of 26 degrees, but the shape is not limited to this, and the baseline 6 has a specified size of 5. A target net 8 is installed at a distance of 11.887 mm inside from this baseline, and an open space for installing a back floor and a ball collecting floor is provided outside the baseline and inside the target net, respectively. Ba,
The radius of the ground may be changed to make it fan-shaped or circular, and the number of sections on the court floor may be changed to increase the width of one section to provide more room for the court.

Note that the installation range of the side net 9 and the cover net 10 is not limited to the example. For example, when the width of the target net 8 is narrow due to a small diameter of the ground 1, etc., the installation range of the side net 9 and the cover net 10 is not limited to the example. All you need to do is remove the part to widen the range of the ball's return.If the court floor is divided into large sections and the baseline can be long, it is best to mark the specified dimensions of the sprue to indicate the width of the official court's baseline. As described above, according to the present invention, in the space necessary for practice, there is a court floor partitioned into fan shapes by radial side lines, a back floor on the outside of the court floor, a ball collection floor on the inside, and a court floor in front of the ball collection floor. A pitching machine is installed for each section of the divided court floor to automatically pitch the ball to the court floor, and the ball hit by the practitioner is collected into a bit by the slope of the ball collecting floor and automatically pitched. Since it is designed to be collected by the machine, the space is used effectively, and the trainees are distributed in an arc in each independent fan-shaped compartment, and practice from the outside to the center, so that it is possible to practice between adjacent compartments. By providing side nets and cover nets in each section of the court floor, practitioners do not have to pick up missed poles each time. Since you can practice hitting back continuously, the practice effect is great, and since there is no partner to practice with, even first-time players can practice without worrying about making mistakes.

Furthermore, since the ball that has been hit back is automatically collected, it is possible to save manpower and time and provide an efficient practice field.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view. 1 is the ground, 2 is the back floor, 3 is the court floor,
4 is the ball collection floor, 5 is the sideline, 6 is the baseline, 7 is the service line, 8 is the target net, 9 is the side net, 10 is the cover net, 11 is the back net, 12 is the bit, 15 is the pitching machine, 16 is a ball storage tank, 17 is a ball throwing chute, and 18 is a ball lifting conveyor. Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. A court floor divided into fan shapes by radial side lines, a back floor on the outside of this court floor, and a ball collecting floor with an inclined surface that becomes lower toward the center on the inside, Each segmented fan-shaped section has a side net along the side line, a baseline at the outer edge of the court floor that is at least half the length of the official tennis court baseline, and an official tennis court extending inward from this baseline. The tennis court is characterized by having service lines and target nets located at predetermined distances from each other on the tennis court, and a pitching machine on the ball collecting floor that fires the ball beyond the target net to each section of the court floor. Tennis court for practice. 2. The practice tennis court according to claim 1, wherein the pitching machine is provided with a ball storage tank, and a ball lifting conveyor for supplying balls to the ball storage tank is provided in the center of the ball collecting floor. 3. The tennis court for practice according to claim 1 or 2, further comprising a cover net at the upper part between the side nets on the side line of the court floor.