WO2014126314A1

WO2014126314A1 - Racket having strings

Info

Publication number: WO2014126314A1
Application number: PCT/KR2013/008052
Authority: WO
Inventors: 이상신
Original assignee: Lee Sang Sin
Priority date: 2013-02-13
Filing date: 2013-09-06
Publication date: 2014-08-21
Also published as: KR20140101972A; KR101432978B1

Abstract

The present invention relates to a racket having a string part, for tennis, badminton, squash, etc. and, more particularly, to a racket having strings, which outputs a signal to enable a player to exactly swing a racket when at least one swing from among underhand forehand swing, underhand backhand swing, forehand overhead swing, and backhand overhead swing is exactly performed. The racket having strings comprises a swing signal unit, which is switched to output a signal when the racket swung by a player reaches a preset maximum acceleration. Therefore, when an exact swing is performed and a maximum acceleration is thereby reached, the racket having strings outputs a swing signal to enable a player to have an advantage in playing a game. Further, the racket having strings enables a novice at racket sports to acquire exact swing in short time.

Description

String racket

The present invention relates to a racket having a string portion, such as tennis, badminton or squash, and more particularly, when one or more swings of forehand underswing, backhand underswing, forehand overswing or backhand overswing are correctly performed. By outputting, it relates to a string racket that allows an athlete to perform a racket swing accurately.

Racquets with strings such as tennis, badminton or squash are used for racket sports where two players or two teams play using a racket, shuttlecock or ball on a square court with a net or a court with three walls. It is a kind.

In the case of the badminton, both players or both teams rally by using the racket to beat the shuttlecock to the opponent's court. Tennis is played by using a tennis racket to rally the ball over the opponent's court. Squash then uses a squash racket to squeeze the squash ball against the wall and then bounce off the ball so that the opponent can pick it up.

The rackets for this movement are the string part wound on the grid to hit the shuttlecock, tennis ball or squash ball, and the hitting shuttlecock, tennis ball or squash ball by supporting the string part and increasing the circular motion radius of the string part. It comprises a shaft made of a rigid material such as aluminum, carbon fiber material extending from the string portion to enlarge, and a handle portion attached to the end of the shaft so as to easily hold the racket.

During the above exercise, the shuttlecock for badminton is made in the form of a cone with feathers in a cork covered with leather. Examples of the prior art for the badminton exercise using the badminton racket and shuttlecock described above are the badminton racket of the Republic of Korea Patent Publication No. 97-6234 (hereinafter, prior art 1) and the badminton racket for training of the Republic of Korea Patent Publication No. 1998-21199 ( Hereinafter, the prior art 2) is mentioned.

Prior art 1 is to make a badminton racket to have a balance point or a center point closer to the head end (string) side of the badminton racket than the handle end portion, it is configured to perform a strong blow by increasing the moment of inertia of the string portion.

In addition, the above-described prior art 2 aims to provide a badminton racket for improving the hitting accuracy of the shuttlecock, and it is possible to practice accurate hitting by forming a narrow hitting area by winding a string only in a certain center area passing through the centerline of the string part. It is configured to be.

The badminton movement, which has the above-mentioned characteristics, has a special aerodynamic property because feathers are attached to the cork of the shuttlecock and have a special aerodynamic property, so that the badminton movement has a flight trajectory completely different from the general ball used in other racket sports. Shuttlecocks are much faster than other racquet sports balls, but their airspeed is much lower than regular balls because they are more aerodynamic.

Badminton with this characteristic sends the shuttlecock to the other party by transmitting the force (energy) generated in the process of rotating the badminton racket to the rotation of the arm and the snap of the inner ear to the shuttlecock. That is, when the arm is rotated around the wrist and the arm is rotated to draw an accurate circle using the snap of the wrist, the most powerful force is generated in the racket, and the greatest force is transmitted to the shuttle cock when the shuttle is hit in the section with the highest acceleration. You can exercise the shuttlecock quickly.

Therefore, to hit the shuttlecock strongly and accurately, it is necessary to perform an accurate and fast swing. In this case, the correct swing is to perform a swing to have the maximum acceleration at the strike point of the shuttlecock.

Although not described in detail, even in the case of tennis or squash, when swinging a racket like badminton, the most powerful and accurate to hit a tennis ball or squash ball when a hit is made in the maximum acceleration section of the section in which the string unit performs a circular motion.

That is, in the case of the exercise using the racket, the correct swing motion is essential.

However, in the case of the above-described prior art 1 and the prior art 2, it is possible to increase the impact force to increase the moment of inertia of the badminton racket, or to allow the exerciser to practice to swing at the correct hit point using a narrow string area, The exerciser does not have a function of recognizing that the shuttlecock is hit in the swing area having the maximum acceleration. Accordingly, in the prior arts, such as the prior art 1 and the prior art 2, because a lot of time to train to learn the correct swing motion of the badminton racket, there is a problem that takes a long time to learn the correct swing motion.

This is the same problem that occurs in the case of a string racket such as a tennis racket or squash racket.

Accordingly, the present invention is to solve the above-described problems of the prior art, when the correct swing operation is performed, by outputting a signal to enable the athlete to perform the exercise using the string racket to recognize the correct swing posture The aim is to provide a string racket that can be used to practice or practice the correct swing motion.

The string racket of the present invention for achieving the above object, the swing signal unit for switching when the exerciser performs a swing, the predetermined maximum acceleration; outputs a signal; characterized in that it comprises a.

The above-described swing signal unit includes a switch unit mounted inside the string racket, the string racket being switched in a preset maximum acceleration movement section, and a signal output unit outputting a signal by switching the switch unit. It is characterized by.

The switch unit may include a slide case mounted inside a string, shaft, or handle part, and a first terminal part and a second terminal part slidably mounted on both sides of the slide case, and between the first terminal part and the second terminal part. In the case of having a preset acceleration, the first terminal portion and the second terminal portion by contact with each other by inertia, and after the predetermined acceleration or less below the elastic portion to space the first terminal portion and the second terminal portion; It is characterized in that it is configured to output a signal by supplying power to the signal output unit when the first terminal portion and the second terminal portion in contact.

The slide case may include: a first conductive part and a second conductive part attached to at least one surface of an inner side in which the first terminal part and the second terminal part are in contact with the slide; And an insulating part for electrically insulating the first conductive part and the second conductive part, wherein the first conductive part and the second conductive part are electrically connected to the signal output part by an electric wire.

The elastic unit may be selected and mounted such that the first and second terminal portions have elastic modulus in contact with each other at the maximum acceleration of the maximum acceleration section during the string racket swing operation by measuring the swing motion of the string racket of the exerciser. It is characterized in that it is configured to be removable.

The string racket may further include a power supply unit which is switched when the first terminal unit and the second terminal unit are in contact to supply power to the signal output unit.

Unlike the string racket, the first terminal portion and the second terminal portion are each composed of magnets, one end of which is in contact with the first conductive portion and the second conductive portion, and the other end is connected to the first terminal and the second terminal. A first coil and a second coil wound around the outside of each of the first terminal portion and the second terminal portion so as to be connected to each other, and generate an electromotive force by reciprocating motion in a coil of the first terminal portion and the second terminal portion to output a signal; It may be configured to provide a power supply for the signal output unit for.

The string racket of the present invention having the above-described configuration provides an effect of advantageously guiding the game by outputting a signal when the exerciser performs the correct swing motion so that the exerciser can perform the correct swing even during the game.

In addition, the string racket of the present invention provides an effect that allows the beginner to learn the correct swing movement in a short time when the string racket exercise beginners.

1 is a view showing the overall configuration of a badminton racket 100 as an embodiment of a string racket of the present invention,

2 is a view showing a detailed configuration of the switch unit 210A mounted inside the badminton racket 100;

3 is a view showing the configuration of a signal output unit 230A connected by the switch unit 210A and an electric wire 201 to output a signal;

4 is a view showing a switch unit 210B of another embodiment in which induced electromotive force is switched,

FIG. 5 is a view illustrating a configuration of a signal output unit 230B according to another embodiment in which power is supplied by the switch unit 210B of FIG. 4 to output a signal.

6 is a diagram illustrating a forehand overswing process during a swing operation using a badminton racket having the configuration of FIGS. 1 to 5.

Hereinafter, with reference to the accompanying drawings showing a badminton racket 100 as an embodiment of the string racket of the present invention will be described in more detail.

1 is a view showing the overall configuration of the badminton racket 100 as an embodiment of the string racket of the present invention, Figure 2 is a view showing a detailed configuration of the switch unit 210A mounted inside the badminton racket 100 3 is a diagram illustrating a configuration of the signal output unit 230A connected to the switch unit 210A and the wire 201 to output a signal.

As shown in FIGS. 1 to 3, the badminton racket 100 includes a string part 110 on which the string 113 is wound in a lattice shape, a shaft 120 extending from the string part 110, and a shaft. It is provided with a handle 130 is mounted on the end of the 120, the switching signal portion 200 for outputting a signal when the swing operation of the correct badminton racket 100 is mounted.

As illustrated in FIG. 1, the switching signal unit 200 includes a switch unit 210A mounted inside a terminal located at the string unit 110 side of the shaft 120, the switch unit 210A, and an electric wire 201. It is configured to include a signal output unit 230A is mounted inside the handle 130 to output the correct swing signal is connected to. In FIG. 1, the switch unit 210A and the signal output unit 230A may be located at any position on the center of gravity line of the badminton racket 100.

As shown in FIG. 2, the switch unit 210A includes a slide case 211 mounted in the inner space of the shaft 120 and a first terminal unit slidably mounted in the slide case 211. 213A) and the second terminal portion 214A, and an elastic portion 215 mounted between the first terminal portion 213A and the second terminal portion 214A.

More specifically, the first conductive part 211a and the second conductive part 211b are separated and attached to one side of the slide case 211 by the insulating part 211c.

The first terminal portion 213A and the second terminal portion 214A are formed of a conductor having a first terminal 213a and a second terminal 214a attached to surfaces facing each other, and thus, the first terminal portion 213A. ) Is slidably mounted with one side attached to the first conductive portion 211a, and the second terminal portion 214A is slidably movable with one side attached to the second conductive portion 211b. Is mounted. The first terminal portion 213A and the second terminal portion 214A are spaced apart from each other between the first terminal portion 213A and the second terminal portion 214A, and the badminton racket 100 rotates at the maximum acceleration. In this case, the first terminal portion 213A and the second terminal portion 214A are adjacent to each other by inertia and acceleration so that the elastic portion 215 supporting the first terminal 213a and the second terminal 214a is mounted thereon. do. In this case, the elastic part 215 is removable, and after measuring the swing acceleration of the exerciser according to the exerciser, the first terminal 213a and the second terminal 214a are attached at the maximum swing acceleration. 213A and the second terminal portion 214A are selected and mounted to have an elastic modulus for supporting the slide movement.

The first conductive portion 211a and the second conductive portion 211b are electrically connected to the signal output portion 230A by wires disposed in the shaft 120, respectively, as shown in FIGS. 3 and 4. do.

Next, as shown in FIG. 3, the signal output unit 230A is short-circuited when the first terminal 213a and the second terminal 214a are in contact with each other, and the power supply unit 231A and the power supply unit 231A supply power. Speaker 234 for outputting a sound signal is supplied from the power supply. In this case, the speaker 234 may be variously modified to a light emitting unit emitting light.

In the badminton racket having the above-described configuration, when the exerciser swings, the power supply of the power supply unit 231A is energized by the first terminal 213a and the second terminal 214a contacting and energizing each other in the maximum acceleration section. The signal is output to the signal 233A and the signal is output through the speaker 234.

In addition to the above-described configuration, as another embodiment of the present invention, a badminton racket having a switching signal unit that operates using induction electromotive force will be described.

FIG. 4 is a diagram illustrating a switch unit 210B of another embodiment which generates and generates induced electromotive force, and FIG. 5 is a signal output unit of another embodiment that is powered by the switch unit 210B of FIG. 4 and outputs a signal. It is a figure which shows the structure of 230B.

The badminton racket of FIGS. 4 and 5 has the same configuration as the badminton racket of FIGS. 1 to 3 except for the configuration of the switch unit 230B and the signal output unit 230B. A switch unit 230B and a signal output unit 230B of another embodiment will be described with reference.

As shown in FIG. 4, the switch unit 210B includes a slide case 211 having a first conductive portion 211a and a second conductive portion 211b separated from each other by an insulating portion 211c on one inner surface thereof. The inside of the slide case 211 has one end connected to the first conductive portion 211a and the other end connected to the first terminal 213a formed at the first terminal portion 214a. The first terminal 220a wound around the outside, one end is connected to the second conductive portion 211b, and the other end is connected to the second terminal 2113b formed at the second terminal portion 214a. And a second coil 220b wound around the outside of 214a. In this case, when the first terminal 213a and the second terminal 2113b are in contact with each other, the first coil 220a and the second coil 220b are wound to flow in the same direction. When the first coil 220a and the second coil 220b are collectively referred to as a coil 220.

In addition, a first terminal portion 214a having a magnetic force in which a first terminal 213a is formed on a surface facing the second terminal portion 214a is mounted inside the first coil 220a to be slidably movable. In addition, a second terminal portion 214a having magnetic properties in which a second terminal 214a is formed on a surface facing the first terminal portion 214a is mounted inside the second coil 220b to be slidably movable.

In addition, the maximum swing acceleration of the exerciser is measured between the first terminal portion 214a and the second terminal portion 214a, and is compressed only when the athlete performs the maximum swing movement, thereby compressing the first terminal 213a and the second terminal 2113b. Are mounted with elastic modulus selected such that.

In addition, as shown in Figure 5, the signal output unit 230B of another embodiment of the present invention is directly connected to the signal board unit 233B for driving the speaker 234 without having a separate power supply unit.

The badminton racket having the configuration of FIGS. 4 and 5 described above has a first terminal portion 213A and a second terminal portion 214a in the first coil 220a and the second coil 220b when the exerciser swings. Is generated to generate induced electromotive force on the first coil 220a and the second coil 220b, and the first terminal 213a and the second terminal 2113b are energized during the swing of the maximum acceleration, so that the switch unit ( The two coils 220 of 210B are short-circuited and the signal is output by supplying power to the signal output unit 230B. Therefore, the badminton racket having the configuration of FIGS. 4 and 5 has the convenience of operating without a power source such as a battery.

As shown in FIG. 6, when the exerciser performs the forehand overswing using the badminton racket 100, the string unit 110 performs a circular motion of moving sections A-B, B-C, and C-D. In this case, the maximum acceleration occurs in the B-C section between the B point and the C point, and this section is called the maximum acceleration section.

In this case, when the maximum acceleration measured according to the exerciser occurs in the maximum acceleration section, the correct swing is performed. As such, when the correct swing is performed, the first

terminal portions

213A and 213B and the second terminal portions 214A and 214a of FIGS. 1 to 5 are close to each other while pressing the elastic portion 215 and the first terminal 213a. ) And the second terminal 214a are in contact. Accordingly, the induction electromotive force generated from the power of the power supply unit 231A of FIG. 3 or the coil 220 of FIGS. 4 to 5 is supplied to the signal board units 233A and 233B, and a signal sound is output through the speaker 234, thereby causing movement. It is possible to recognize whether or not the self swing has been performed correctly.

In the exemplary embodiment of the present invention, the badminton racket has been described as an example, but the present invention may be applied to all string rackets having a string part such as a tennis racket and a squash racket, and also includes a forehand underswing, a backhand underswing, or a backhand overswing. Can be applied.

Claims

And a swing signal unit for switching and outputting a signal when the exerciser performs a swing and has a preset maximum acceleration.
The method of claim 1, wherein the swing signal unit,

A switch unit which is switched at a preset maximum acceleration in the string unit side end of the string unit or the shaft;

And a signal output unit for outputting a signal by switching of the switching unit.
The method according to claim 2, The switch unit,

A slide case mounted inside the string, shaft or handle; and,

A first terminal portion and a second terminal portion slidably mounted on both sides of the slide case;

In the case of having a predetermined acceleration between the first terminal portion and the second terminal portion, the first terminal portion and the second terminal portion are in contact with each other by inertia, and then spaced apart from the first terminal portion and the second terminal portion below a predetermined acceleration. Including elastic;

And the signal output unit outputs a signal when the first terminal unit and the second terminal unit are in contact with each other.
The method of claim 3, wherein the slide case,

First and second conductive parts respectively attached to at least one inner surface of the first terminal part and the second terminal part in contact and sliding; And,

Including; insulating portion for electrically insulating the first conductive portion and the second conductive portion,

And the first conductive portion and the second conductive portion are electrically connected to the signal output portion by electric wires.
The method of claim 3, wherein the elastic portion,

By measuring the swing movement of the string racket of the exerciser, it is possible to attach and detach the athlete so that the first terminal portion and the second terminal portion have elastic modulus contacting at the maximum acceleration of the maximum acceleration section during the string racket swing movement. String racket, characterized in that configured to.
The method according to claim 3,

When the first terminal portion and the second terminal portion is in contact with the string racket, characterized in that it further comprises a power supply for supplying power to the signal output unit.
The method according to claim 3,

The first terminal portion and the second terminal portion is composed of a magnet, one end of the first contact portion and the second conductive portion, respectively, the other end is connected to the first terminal and the second terminal, respectively, the first terminal portion And a first coil and a second coil wound on the outside of each of the second terminal portion, the electromotive force is generated by reciprocating motion in the coils of the first terminal portion and the second terminal portion to supply power for signal output. And a string racket configured to provide.