KR102426758B1 - Serve practice apparatus in tennis - Google Patents

Abstract

The present invention relates to a tennis sub practice device and a method for practicing a sub posture using the sub practice device, comprising: a base plate for a ready posture for a serve and a base plate for a landing posture; After serving, when jumping over the base plate for landing position and taking the landing position with the landing foot (eg left foot), learn the correct serving position by letting the rest of the foot (eg right foot) touch the touch ball to learn the correct serving position or incorrect serve. The hitting motion can be corrected, and the first and second sensors for detecting whether the user lands on the correct position are installed in the first mark portion and the second mark portion, and the first and second sensors are installed to detect whether the user lands on the correct position. 2 By notifying the user through the display unit, there is an effect of correcting the user's wrong motion, and the first and second LED lines guide the user's foot position so that it can be easily identified with the naked eye even at night, making it convenient to use Of course, the quality can be further improved by making the appearance beautiful.

Description

Tennis serve practice device {SERVE PRACTICE APPARATUS IN TENNIS}

The present invention relates to a tennis serve practice apparatus, comprising a more specific base plate for a ready-to-serve posture and a base plate for a landing posture, and when serving, a user on the base plate for a ready-to-serve posture on a base plate for a landing posture after serving When jumping and taking a landing position with the landing foot (e.g., the left foot), the rest of the foot (e.g., the right foot) can touch the touch ball to learn the correct serve posture or correct the incorrect sub-batting motion. It is about a tennis serve practice device.

In general, tennis is a type of racquet sport in which two players (singles) or two teams of two players each (doubles) compete.

Players use a stringed racquet to hit a hollow, felt-surface, rubber tennis ball and pass it over the net to the opponent's court over and over again until either side has bounced the ball twice before hitting or hitting the tennis ball into the net In the event that the player does not cross the score or the tennis ball does not enter the opponent's court, the failing player's opponent will score points.

When you first learn tennis, you learn the forehand, backhand, and volley first, but in reality, the most difficult thing for professional players as well as beginners is the serve.

A serve is the first hand over a tennis ball to start a point in a tennis match.

A tennis serve comes from an accurate and consistent toss, usually by raising a tennis ball up to 2m above your head and then hitting the falling tennis ball to serve.

In order to serve in a tennis match, a right-handed person must throw a tennis ball upwards with his left hand, then with his right hand hit the falling tennis ball with the racquet he is holding with his right hand, then with the entire body curled back and forth. At this time, various complex physical activities such as the motion of hitting the tennis ball, the RBI, the position of the foot, the angle of the racquet face at the moment of striking the tennis ball, and the rotation of the wrist, act.

However, it is difficult for beginners to accurately hit the falling tennis ball after throwing the tennis ball with their left hand, and the tossed tennis ball does not fall in the desired direction, so the serve posture is disturbed, and the correct serve posture cannot be learned.

No. 20-0470337 for the domestic registration office discloses a "tennis sub practice machine for beginners".

A conventional tennis serve practice apparatus for beginners includes: a ball storage unit that stores a tennis ball required for serving practice and serves as a passage for lowering the stored tennis ball to a lower portion during sub practice; a ball lifting device for lifting the tennis ball to the ball storage device; a ball dropping device installed at the lower end of the ball storage device to drop the tennis balls down one by one whenever there is a signal; The ball storage device, the ball lifting device and the ball dropping device portion is fixed and installed; It operates with a foot and includes a foot switch that sends an operation signal to the ball dropping device, and consists of a control unit for driving and controlling the ball lifting device and the ball dropping device.

However, the conventional tennis serve exercise machine for beginners not only cannot practice while learning accurate sub motions, but also has disadvantages such as a high failure rate due to a complicated overall structure.

Korean Utility Model Publication No. 20-0470337 (Tennis Serve Exerciser for Beginners, 2014.01.02.Announcement)

In order to solve the above problems, the present invention is provided with a base plate for a sub ready posture and a base plate for a landing posture, and when serving, the user jumps from the base plate for the serve ready posture to the base plate for the landing posture after serving to land Tennis serve practice, where when landing with one foot (e.g. left foot), the other foot (e.g. right foot) touches the touch ball to learn correct serve posture or correct incorrect serve hitting motion. The purpose is to provide an apparatus.

In order to achieve the above object, the tennis serve practice device of the present invention is a base plate for a ready posture for a serve with a first mark portion 111 having a shape of a right foot and a left foot on the upper surface so that the user can take a ready posture for the serve ( 110); And the landing position is installed adjacent to the base plate 110 for the ready posture for the serve, and a second mark portion 121 having a shape of the user's landing foot is formed on the upper surface so that the user can take the landing posture after serving. It includes; a base plate 120 for posture.

In addition, when serving, when the user jumps over the base plate for the landing posture after serving on the base plate 110 for the ready posture for serving and takes a landing posture with the landing foot, the remaining foot is touched to obtain a correct serve posture. It may further include a foot touch means 130 installed on the base plate 110 for the sub-ready posture so as to learn and correct.

In addition, the first mark portion 111 is installed so as to be replaceable on the base plate 110 for the sub-ready posture, and the second mark portion 121 is replaceable with the base plate 120 for the landing posture. It may be an installed structure.

In addition, the first mark portion 111 and the second mark portion 121, including first and second sensors (S1, S2) for detecting whether the user is in the correct position, the first and The second sensors S1 and S2 may further include first and second display units D1 and D2 for notifying the user when detecting that the user is in the correct position.

In addition, the first and second LED lines L1 and L2 for guiding the position of the foot may be included in the outer lines of the first mark portion 111 and the second mark portion 121 .

In addition, the foot touch means 130, the support 131 having a predetermined height; a wire 132 hanging from the end of the support 131; a touch ball 133 hanging from the end of the wire 132 and touching the user's foot; a notification unit notifying a touch of the touch ball 133; and a length adjustment unit 134 for adjusting the length of the wire 132 .

In addition, the guide rail 114 having a guide groove 113 in the base plate 110 for the sub ready posture so that the position of the foot touch means 130 can be adjusted by moving the foot touch means 130 forward and backward. is formed, and the lower end of the support 131 may be slidably coupled in the guide groove 113 .

In addition, the support 131 may have a structure in which a plurality of assembly blocks 131a are connected to or separated from each other to increase or decrease in length, or may have a telescopic structure.

In addition, the support 131 may have a structure in which a cradle capable of mounting a photographing means is provided.

In addition, depending on the user is right-handed or left-handed, the foot touch means 130 may have a structure in which the foot touch means 130 is selectively installed on the right or left side of the base plate 110 for preparing the sub.

As described above, in the present invention, a base plate for a sub-ready posture and a base plate for a landing posture are provided, and when serving, the user jumps from the base plate for the sub-ready posture to the base plate for the landing posture after serving, and the landing foot ( For example, when taking a landing position with the left foot), the remaining foot (for example, the right foot) can be made to touch the touch ball to learn the correct serve posture or correct the incorrect sub striking motion, and the overall structure is simple, It has the advantage of low failure rate.

In addition, in the present invention, the first and second sensors for detecting whether the user is in the correct position are installed in the first mark portion and the second mark portion, and when the user is in the correct position, the first and second display units notify the user through the By giving, there is an effect of correcting the user's wrong motion, and the first and second LED lines guide the user's foot position to make it easy to identify with the naked eye even at night, making it convenient to use and improve the appearance The quality can be further improved by making it beautiful.

1 is a perspective view showing a tennis sub practice apparatus according to a first embodiment of the present invention.
FIG. 2 is a plan view illustrating the base plate for the sub-ready posture and the base plate for the landing posture of FIG. 1 .
3 is a perspective view illustrating a tennis sub practice apparatus according to a second embodiment of the present invention.
4 is a view showing a tennis serve practice apparatus according to a third embodiment of the present invention, in which a base plate for a ready-to-serve posture and a base plate for a landing posture are composed of separate members, and is installed to be foldable by a hinge bracket. is a perspective view showing
5 is a perspective view showing a tennis serve practice apparatus according to a fourth embodiment of the present invention, in which the support of the foot touch means is detachably installed on the base plate for the ready-to-serve posture.
6 is a side view showing a tennis sub practice apparatus according to a fifth embodiment of the present invention, and showing that the support of the foot touch means has an arc-shaped structure.
7 is a view showing a motion of taking a sub-ready posture on the first mark portion of the base plate for the sub-ready posture of the present invention.
8 is a motion that can learn the correct sub posture or correct the wrong sub striking habit by allowing the rest of the feet to touch the touch ball when taking a landing position with the landing foot over the second mark part of the base plate for the landing posture of the present invention. It is the drawing shown.
9 is a block diagram illustrating a sub posture practice method using the tennis sub practice device according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

This embodiment is described based on a right-handed person (right-footed person), and the left-handed person (left-handed person) is applied in the opposite direction to a right-handed person (right-footed person).

Usually, a right-handed person (right-footed) tosses a tennis ball upward with his left hand, and while jumping, strikes the tennis ball forward with the racket he is holding in his right hand and takes the action of landing with his left foot.

The tennis serve practice device of the present invention is a device used for training related to the tennis serve. In the case of the serve, the quality of the serve varies depending on whether you strike the ball with an accurate RBI and kick the back foot while balancing. It is a practice device.

In the case of a right-handed person, turn slightly to the right (the left foot is close to the net side), jump and land with the left foot, and the right foot becomes a posture of kicking backward and upward toward the sky. At this time, the right foot becomes The kick back towards the sky is very important, and the left foot needs to keep the center of the body.

The tennis serve practice apparatus of the present invention is helpful in making the correct posture of such a serve, and it is an apparatus for sub practice that puts a cushion member on the landing part to maintain balance and prevent strain on the ankle or knee.

1 is a perspective view illustrating a tennis serve practice apparatus according to a first embodiment of the present invention, and FIG. 2 is a plan view illustrating a base plate for a ready-to-serve posture and a base plate for a landing posture of FIG. 1 .

1 and 2, the tennis sub practice apparatus of the present invention includes a base plate 110 for a sub ready posture having a first mark portion 111 formed therein, and a base plate for a landing posture having a second mark portion 121 formed therein ( 120), and a foot touch means 130.

The base plate 110 for the sub-ready posture may be configured as a plate-shaped body, and is configured to be placed on the ground or an indoor floor surface.

A first mark portion 111 is formed on the upper surface of the base plate 110 for the sub ready posture so that the user can take the sub ready posture.

The first mark portion 111 has a shape of the user's right foot and left foot. Here, a right-handed person is indicated in the direction shown in Figs. 1 and 2, whereas a left-handed person is indicated in the opposite direction.

In the first mark portion 111, a first sensor (S1) for detecting whether the user is in the correct position is installed, and when detecting that the first sensor (S1) is in the correct position, notify the user A first display unit D1 for a period may be installed.

The first sensor S1 may be a pressure sensor or a position sensor.

Furthermore, a first LED line L1 for guiding a foot position may be installed on the outer line of the first mark part 111 .

The first LED line L1 can be easily identified with the naked eye at night, so that it is convenient to use and has a beautiful appearance, thereby further improving the quality of the device.

In addition, the base plate 120 for the landing posture may be configured as a plate-shaped body of an elastic member, and is configured to be placed on the ground or an indoor floor.

The base plate 120 for the landing posture is preferably formed in the form of a thick mat so as to sufficiently withstand the load upon landing after jumping of the user, and to cushion the base plate 120 .

A second mark portion 121 is formed on the upper surface of the base plate 120 for the landing posture so that the user can take the landing posture after serving. Here, the right-footed person is displayed in the direction shown in Figs. 1 and 2, whereas the left-handed person is displayed in a position symmetrical thereto, although not shown in the drawings.

A second sensor (S2) for detecting whether the user lands at the correct position is installed in the second mark unit 121, and when detecting that the second sensor (S2) lands at the correct position, the user A second display unit D2 for informing the user may be installed.

The second sensor S2 may be a pressure sensor or a position sensor.

Furthermore, a second LED line L2 for guiding the position of the foot may be installed on the outer line of the first mark part 121 . The second LED line L2 makes it easy to identify with the naked eye, so that it is convenient to use, and the quality of the product can be further improved by making the appearance beautiful.

In addition, Figure 3 is a perspective view showing a tennis sub practice apparatus according to a second embodiment of the present invention.

Referring to FIG. 3 , the first mark part 111 is installed so as to be replaceable on the base plate 110 for the ready-to-serve posture, and the second mark part 121 is replaceable with the base plate 120 for the landing posture. It may be a structure to be installed.

In detail, a mounting groove 115 is formed on the upper surface of the base plate 110 for the sub-preparation posture, and the first mark part 111 may be inserted into the mounting groove 115 to be installed.

A mounting groove 125 is formed on the upper surface of the base plate 120 for the landing position, and the second mark portion 121 may be inserted into the mounting groove 125 to be installed.

In the structure of inserting and installing the first mark portion 111 and the second mark portion 121 as described above, when replacing with a new one after long-term use, the base plate 110 for the sub-ready posture and the base for the landing posture Instead of replacing the entire plate 120, only the first mark portion 111 and the second mark portion 121 need to be replaced with new ones, so the convenience of maintenance and repair is high and the cost can be significantly reduced.

Furthermore, the direction and position of the first mark unit 111 and the second mark unit 121 can be freely adjusted according to the right-handed person or the left-handed person or according to the practice place.

In addition, FIG. 4 shows a tennis sub practice apparatus according to a third embodiment of the present invention, in which the base plate for the ready posture and the base plate for the landing posture are composed of separate members, and can be folded by a hinge bracket. It is a perspective view showing the installed structure.

The base plate 110 for the sub preparation posture and the base plate 120 for the landing posture may be installed adjacent to each other, and may be formed integrally with each other (see FIGS. 1 to 3 ).

On the other hand, as shown in FIG. 4 , the base plate 110 for the sub ready posture and the base plate 120 for the landing posture are composed of separate members, and the base plate 110 for the sub ready posture and the landing The posture base plate 120 may be installed to be foldable by the hinge bracket (H). In such a folding structure, it is easy to move and store because it can be folded and moved and stored.

In addition, referring to FIG. 1 , the foot touch means 130 serves when the user serves on the base plate 110 for a ready-to-serve posture, and then jumps over the base plate 120 for the landing posture to reach the landing foot (right When taking a landing position with the left foot in the case of a handle), the rest of the foot (the right foot in the case of a right-handed person) should be touched to learn the correct serving posture or to correct the wrong serving hitting habit.

By allowing the user to selectively install the foot touch means 130 on the right or left side of the base plate 110 for the ready-to-serve posture depending on whether the user is right-handed or left-handed, both right-handed and left-handed users are universally used This is possible.

In addition, the configuration of the foot touch means 130 is as follows.

The foot touch means 130 is a support 131 having a predetermined height, a wire 132 hanging from the end of the support 131, a touch ball 133 hanging from the end of the wire 132 and touching the user's foot, It includes a notification unit (not shown) for notifying the touch of the touch ball 133 , and a length adjustment unit 134 for adjusting the length of the wire 132 .

The support 131 may increase or decrease the length of the plurality of assembly blocks 131a by being connected or separated from each other, but is not limited thereto, and the support 131 has a telescopic structure, thereby increasing or decreasing the length. may be

The plurality of assembly blocks 131a may be configured to have grooves and projections alternately formed on both sides, and to assemble the plurality of assembly blocks 131a by inserting the projections in the grooves.

In addition, the support 131 is provided with a cradle (not shown) on which a photographing means such as a camera can be mounted, so that the user can take a picture of his or her sub and refer to the posture correction.

The touch ball 133 may be made of a rubber material, or the like, and the notification unit may notify by an LED lamp or a buzzer sound. And the length adjustment unit 134 is composed of a winch or an electric motor, etc., winding or unwinding the wire 132 to adjust the length of the wire 132 .

In the present embodiment, the foot touch means 130 is installed on the base plate 110 for the sub-ready posture, but is not limited thereto, and may be installed on the ground or the side of the base plate 110 for the sub-ready posture.

The foot touch means 130 may be installed integrally with the base plate 110 for the sub-preparation posture, or may be installed detachably.

5 is a perspective view showing a tennis serve practice apparatus according to a fourth embodiment of the present invention, in which the support of the foot touch means is detachably installed on the base plate for the ready-to-serve posture.

Referring to FIG. 5 , a guide rail 114 having a guide groove 113 in the base plate 110 for a sub ready posture so that the position of the foot touch unit 130 can be adjusted by moving the foot touch unit 130 forward and backward. ) is formed, and the lower end of the support 131 may be slidably coupled in the guide groove 113 .

6 is a side view showing a tennis sub practice apparatus according to a fifth embodiment of the present invention, showing that the support of the foot touch means has an arc-shaped structure.

The foot touch means 130 may be formed in an arc shape as shown in FIG. 6 as well as an "L" shape as shown in FIG. 1, and various shapes to fit the user's body by applying a shape memory material can also be transformed into

On the other hand, Figure 7 is a view showing a motion of taking a sub-ready posture on the first mark portion of the base plate for the sub-ready posture of the present invention, Figure 8 is a landing on the second mark portion of the base plate for the landing posture of the present invention When taking a landing position with one foot (left foot for right-handed person), the remaining foot (right foot for right-handed person) touches the touch ball to learn the correct serve posture or to correct the wrong serving hitting habit. It is a drawing.

7 to 9, the sub-position practice method using the sub-training apparatus according to the present invention, the step of taking a ready-to-serve posture on the first mark 111 (S10); The first sensor (S1) installed on the first mark unit 111 detects the position of the user's foot and the first display unit (D1) informs the first mark unit 111 to be accurately located on the step (S20); Step (S30) of landing the landing foot on the second mark unit 121 after the user makes a sub strike; A second sensor (S2) installed in the second mark unit 121, the second display unit (D2) informs that the user's landing foot is positioned exactly on the second mark unit 121 (S40); and when the rest of the user's feet touch the touch ball 133, the notification unit notifying the touch of the touch ball 133 (S50); includes

To explain, first, before taking a ready-to-serve posture, the direction and position of the first mark part 111 and the second mark part 112 and the foot touch means 130 according to whether the user is right-handed or left-handed Adjust.

In the step (S10), the first mark portion 111 is to take a sub-preparation posture.

In the step (S20), the first sensor (S1) installed in the first mark portion 111 detects the position of the user's foot and the first display portion (D1) is positioned exactly on the first mark portion 111. let me know

In the step (S30), the user lands on the second mark portion 121 after the sub strike.

In the step (S40), the second display unit (D2) informs that the second sensor (S2) installed on the second mark unit 121 is accurately positioned on the second mark unit 121 so that the user's landing foot is located on the second mark unit 121 .

In the step S50 , when the user's remaining foot touches the touch ball 133 , the notification unit notifies the touch of the touch ball 133 . The user may determine whether his/her sub posture is correct or incorrect by notifying the notification unit of the touch of the touch ball 133 .

As described above, in the present invention, a base plate for a sub-ready posture and a base plate for a landing posture are provided, and when serving, the user jumps from the base plate for the sub-ready posture to the base plate for the landing posture after serving, and the landing foot ( For example, when taking a landing posture with the right foot), the remaining foot (eg, the left foot) can be made to touch the touch ball to learn the correct sub posture or correct the wrong sub striking motion.

In addition, in the present invention, the first and second sensors for detecting whether the user lands at the correct position are installed in the first mark unit and the second mark unit, and detect whether the user lands at the correct position, and through the first and second display units. By notifying the user, there is an effect of correcting the user's own wrong motion, and the first and second LED lines guide the user's foot position so that it is easy to identify with the naked eye even at night, making it convenient to use. Of course, the quality can be further improved by making the appearance beautiful.

In the above, the present invention has been described with reference to the embodiments shown in the drawings. However, the present invention is not limited thereto, and various modifications or other embodiments within the scope equivalent to the present invention are possible by those of ordinary skill in the art to which the present invention pertains. Accordingly, the true protection scope of the present invention should be defined by the following claims.

110: base plate for ready-to-serve posture
111: first mark portion 113: guide groove
114: guide rail 120: base plate for landing posture
121: second mark 130: foot touch means
131: support 131a: assembly block
132: wire 133: touch ball
134: length adjustment unit D1, D2: first and second display unit
H: hinge brackets S1, S2: first and second sensors
L1, L2: first and second LED lines

Claims (10)

a base plate 110 for a ready-to-serve posture with a first mark portion 111 having a shape of a right foot and a left foot on the upper surface so that the user can take a ready-to-serve posture; and
It is installed adjacent to the base plate 110 for the ready posture for the serve, and the second mark portion 121 having the shape of the user's landing foot is formed on the upper surface so that the user can take the landing posture after serving. For the base plate 120; including,
When serving, when the user jumps on the base plate for the landing position after serving on the base plate 110 for the ready posture for serving and takes a landing position with the landing foot, the remaining feet are touched to learn the correct serve posture, and Further comprising a foot touch means (130) installed on the base plate (110) for the preparation of the sub so that it can be corrected, the tennis sub practice device. delete The method of claim 1,
The first mark part 111 is installed so as to be replaceable on the base plate 110 for the sub-ready posture,
The second mark portion 121 is a tennis sub practice device, characterized in that it has a structure that is replaceably installed on the base plate 120 for the landing posture. 4. The method of claim 1 or 3,
In the first mark portion 111 and the second mark portion 121,
Including first and second sensors (S1, S2) for detecting whether the user is in the correct position,
The first and second sensors S1 and S2 further include first and second display units D1 and D2 for notifying the user when detecting that the user is at the correct location Tennis serve practice device to do with. 5. The method of claim 4,
The first and second mark portion 111 and the second mark portion 121 outer line, characterized in that it comprises first and second LED lines (L1, L2) for guiding the position of the foot, tennis serve practice apparatus . The method of claim 1,
The foot touch means 130,
a support 131 having a predetermined height;
a wire 132 hanging from the end of the support 131;
a touch ball 133 hanging from the end of the wire 132 and touching the user's foot;
a notification unit notifying a touch of the touch ball 133; and
Length adjustment unit (134) for adjusting the length of the wire (132); Containing, tennis sub practice device. 7. The method of claim 6,
A guide rail 114 having a guide groove 113 is formed on the base plate 110 for the sub preparation posture so that the position of the foot touch unit 130 can be adjusted by moving the foot touch unit 130 forward and backward. And, the tennis sub practice device, characterized in that the lower end of the support (131) is slidably coupled in the guide groove (113). 7. The method of claim 6,
The support 131 is a tennis sub practice device, characterized in that the plurality of assembly blocks (131a) are connected to each other or separated to increase or decrease in length, or have a telescopic structure. 7. The method of claim 6,
Tennis sub practice apparatus, characterized in that the support (131) has a structure provided with a cradle on which a photographing means can be mounted. The method of claim 1,
According to the user is right-handed or left-handed, the foot touch means 130 is a tennis serve practice apparatus, characterized in that the structure is selectively installed on the right or left side of the base plate 110 for the ready posture for the serve.

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