KR20200127452A - Multidirectional tennis training apparatus with recognition function of effective hitting - Google Patents

Abstract

The present invention relates to a multi-directional tennis practice device having an effective hit recognition function. The multi-directional tennis practice device having an effective hit recognition function according to the present invention comprises: multiple elastic members configured to elastically bounce a tennis ball, and disposed at different angles in front of a user; a detection sensor provided at each of the elastic members to detect whether or not a tennis ball is hit; and a determination control unit for determining whether or not a tennis ball hit by the user is in or out through the measured values from the detection sensor provided at each of the elastic members. Accordingly, by determining whether or not a tennis ball hit by a user is in or out, continuous interest for a user can be induced.

Description

Multi-directional tennis practice device with effective hit recognition function {MULTIDIRECTIONAL TENNIS TRAINING APPARATUS WITH RECOGNITION FUNCTION OF EFFECTIVE HITTING}

The present invention relates to a multi-directional tennis practice device having an effective hit recognition function, and more particularly, a tennis ball hit by the user is determined whether or not to in or out, thereby inducing a user's continuous interest. It relates to a multi-directional tennis practice device.

Tennis is getting more and more in the spotlight for personal physical strength improvement and hobbies, but to practice tennis, a separate tennis practice field with a tennis court installed in a large space is required.

In order to practice on such a tennis court, there are many restrictions both in terms of time and economy, which is a factor in which tennis is not widely distributed to the general public.

On the other hand, in order to practice tennis, a partner who will receive the hit ball is required, so there is inconvenience that cannot be practiced alone, and thus, in order to solve this inconvenience, it has a function of returning the ball hit by the user back to the user. A tennis swing exerciser was proposed.

The conventional tennis swing exerciser as shown in FIG. 1 is a court (C1) made of a tent sheet on a support (1) installed on the floor and a court support frame (2a) supported from the upper portion of the support (1). ) Is fixed to the coat body (2), an upper coat (C2) fixed to the coat support frame (2a) from the upper portion of the coat, and a moving passage formed by the coat (C1) and the upper coat (C2) (3b) and the moving passage (3b) communicating with the upper end, and includes a tennis ball return portion (3) consisting of a closed space formed with an opening (3a) having a larger diameter than the tennis ball downward.

In the above structure, when a user strikes a tennis ball toward the court body 2, the tennis ball hits the court C1, passes through the moving passage, enters into the enclosed space forming the tennis ball return unit 3, and then opens. It comes out to the court C1 again through the part 3a.

The tennis ball coming out of the court C1 is bounced by the recoil plate 4 disposed under the court C1, and the user can swing the bounced tennis ball with a racket to repeat the practice.

However, in the conventional tennis ball swing exercise machine, there is a problem that noise is generated while the tennis ball impacts the cloth-made court sheet. In addition, in a state where the speed of the tennis ball is reduced by the reduction guide body, it is configured to throw only in a certain direction using a throwing device, so the practice is monotonous because it is sent to the user only in a certain form regardless of the speed and direction the user strikes. there is a problem.

On the other hand, a tennis training net as shown in FIG. 2 (Public Utility Model No. 1999-0020623) is a frame 10, a net 20 that is coupled to the frame 10 and bounces off a tennis ball, and the frame (10) It is disposed at the lower end and has a fixing portion 30 that fixes the frame 10 to the ground so as not to fall by the force of the tennis ball. Since such a conventional tennis training net can repel a tennis ball hit by a user by using the net 20 having elasticity, dynamic practice can be performed compared to the conventional tennis ball swing exercise machine. However, since the net with elasticity is composed of a flat surface, when the tennis ball hits the top of the net, it rises excessively upwards, and when it hits the bottom of the net, it hits the floor adjacent to the net. Due to the wide range, it is difficult to continue the rally.

In particular, in the process of practicing using the tennis practice device as described above, it is difficult to induce continuous interest of the user, as it is difficult to induce continuous interest of the user, as it is impossible to judge in and out, and therefore, as a game, there is a problem in that accuracy or difficulty cannot be adjusted. have.

Patent Document 1. Registered Patent No. 1354922 (January 22, 2014) Patent Document 2. Public Utility Model No. 1999-0020623 (June 15, 1999)

Accordingly, an object of the present invention is to solve such a conventional problem, and by determining whether the tennis ball hit by the user is in or out, multi-directional tennis practice with an effective hit recognition function capable of inducing continuous interest of the user In providing the device.

In addition, it is to provide a multi-directional tennis practice device with an effective hit recognition function capable of adjusting the degree of difficulty by adjusting the angle of the elastic member according to the user's body shape or skill.

The above object is, according to the present invention, configured to elastically bounce a tennis ball, a plurality of elastic members disposed in front of the user at different angles; And, each provided on the elastic member to determine whether the tennis ball hits or not. A detection sensor to detect; And a determination control unit that determines whether or not the tennis ball hit by the user is in or out through the measured values of the detection sensors provided on the elastic members, respectively. It is achieved by a multi-directional tennis practice apparatus having an effective hit recognition function.

Here, it is preferable that the detection sensor includes a light-emitting part disposed on one side of the elastic member and a light-receiving part disposed on the other side of the elastic member to face the light-emitting part.

In addition, the light-emitting unit is made of a rod-shaped light-emitting module in which a plurality of light-emitting elements are arranged along a longitudinal direction, and the light-receiving unit is a rod-shaped light-receiving module disposed on the other side of the elastic member by placing a plurality of light-receiving elements along the longitudinal direction It is preferably made of.

In addition, it is preferable that the spacing between the light emitting element and the light receiving element is set smaller than the diameter of the tennis ball.

In addition, it is preferable that the determination control unit determines the user's hit as IN when the measured values of the detection sensors each provided on the plurality of elastic members are recognized according to a preset order.

In addition, the inclination angle of the elastic member is preferably set such that the tennis ball hit by the user is bounced by a plurality of elastic members and returned to the user.

In addition, the elastic member may include a first elastic member for repelling a tennis ball provided in a first direction by a user's strike in a second direction; And a second elastic member for repelling a tennis ball provided in a second direction from the first elastic member in a third direction; wherein, the second direction and the third direction are tennis bounced from the first elastic member It is desirable to form at least part of the return path through which the ball returns towards the user.

In addition, it is preferable that the elastic member further includes a fifth elastic member disposed to form an obtuse angle with the first elastic member in order to reduce the emission angle of the first elastic member.

In addition, it is preferable that the determination control unit recognizes the measurement value of the detection sensor installed on the fifth elastic member as the measurement value of the detection sensor installed on the first elastic member.

In addition, it is preferable that the elastic member includes a frame with an open center and a mesh net supported by the frame in an elongated state.

According to the present invention, there is provided a multi-directional tennis practice apparatus having an effective hit recognition function capable of inducing continuous interest of the user by determining whether a tennis ball hit by a user is in or out.

In addition, there is provided a multi-directional tennis practice device equipped with an effective hit recognition function capable of adjusting the degree of difficulty by adjusting the angle of the elastic member according to the user's body shape or skill.

1 is a configuration diagram of a conventional tennis swing exerciser,
Figure 2 is a configuration diagram of a conventional tennis practice net,
Figure 3 is a configuration diagram of a multi-directional tennis practice apparatus having an effective hit recognition function of the present invention,
Figure 4 is a front view of the first elastic member shown in Figure 3,
5 is a partial perspective view of "A" of FIG. 3,
6 is an exploded perspective view of part "A" of FIG. 3,
7 is a view showing the incident angle and the exit angle of the first elastic member shown in FIG. 3,
8 is a view for explaining the action of the fifth elastic member shown in FIG. 3,
9 is a diagram for explaining the action of the fourth elastic member shown in FIG. 3.

Prior to the description, in various embodiments, components having the same configuration are typically described in the first embodiment by using the same reference numerals, and in other embodiments, configurations different from the first embodiment will be described. do.

Hereinafter, a multi-directional tennis practice apparatus having an effective hit recognition function according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the accompanying drawings, FIG. 3 is a configuration diagram of a multidirectional tennis practice apparatus having an effective hit recognition function of the present invention, FIG. 4 is a front view of the first elastic member shown in FIG. 3, and FIG. 5 is “A” in FIG. Fig. 6 is a partial exploded perspective view of "A" of Fig. 3, Fig. 7 is a view showing an incident angle and an exit angle of the first elastic member shown in Fig. 3, and Fig. 8 is a fifth Fig. It is a view for explaining the action of the elastic member, Figure 9 is a view for explaining the action of the fourth elastic member shown in FIG.

The multi-directional tennis practice device having an effective hit recognition function of the present invention as shown in the drawing is disposed on each of the plurality of elastic members 110 and the elastic members 110 to detect whether or not the tennis ball (B) is hit. It includes a detection sensor 120 and a determination control unit (not shown).

The elastic member 110 is provided in a plurality so as to bounce the tennis ball B hit by the user and return it toward the user, and are arranged at different inclinations. In this embodiment, five elastic members 110 It is arranged in a form surrounding an accommodation space in which an opening is formed on the front face thereof. For convenience of explanation, five elastic members 110 are provided as a first elastic member 110a, a second elastic member 110b, A third elastic member 110c, a fourth elastic member 110d, and a fifth elastic member 110e will be described. On the other hand, the number of the elastic members 110 may be increased or decreased according to needs such as a user's physique or use environment.

Specifically, the first elastic member (110a) receives the tennis ball (B) provided in the first direction (A1) by the hit of the user and is bounced in the second direction (A2) at the lower one side of the accommodation space. It is inclined to face the user.

On the other hand, the first elastic member (110a) is a force proportional to the hitting force of the user and the exit angle (a2) corresponding to the incidence angle (a1) of the tennis ball (B) can make the tennis ball (B) bounce. In addition, it is preferable to include an elastic surface composed of a mesh net 112 in a stretched state (tightly pulled state) so as not to generate a collision noise of the tennis ball B. Here, the incident angle (a1) means the angle between the direction in which the tennis ball (B) is incident and the normal line (n) perpendicular to the surface of the mesh network 112, and the exit angle (a2) is the tennis ball (B) It means the angle between the direction of the emission and the normal (n) perpendicular to the plane of the mesh network 112, based on the contact point of the tennis ball (B) of the mesh network 112, the incident angle (a1) And the emission angle a2 form the same angle (see Fig. 7).

The second elastic member (110b) is spaced apart from the first elastic member (110a) in a second direction (A2), the tennis ball (B) bounced from the first elastic member (110a) in a third direction ( It is arranged inclined at the upper side of the accommodation space so that it can be bounced off to A3).

The third elastic member 110c is spaced apart from the second elastic member 110b in a third direction A3, and the tennis ball B bounced from the second elastic member 110b is moved in a fourth direction ( It is arranged inclined at the other side of the upper portion of the accommodation space so that it can be bounced off to A4), and is in a relatively parallel state with the first elastic member 110a.

The fourth elastic member (110d) is spaced apart from the third elastic member (110c) in a fourth direction (A4), the tennis ball (B) bounced from the third elastic member (110c) in a fifth direction ( It is arranged inclined at the other side of the lower part of the accommodation space so that it can be bounced off to A5).

Meanwhile, the first elastic member 110a may further include a fifth elastic member 110e disposed above the first elastic member 110a in order to reduce the emission angle in the second direction A2. In addition, as the angle between the first elastic member 110a and the fifth elastic member 110e is set to an obtuse angle, the exit angle of the tennis ball B protruding in the second direction A2 may be reduced.

Accordingly, it is possible to reduce the areas of the second elastic member 110b, the third elastic member 110c, and the fourth elastic member 110d installed following the first elastic member 110a, as well as tennis balls. (B) can reduce the range in which it is returned towards the user.

That is, as shown in (a) of FIG. 8, when the first elastic member 110a is formed of a single inclined surface having a predetermined inclination, the emission angle at the top and the bottom of the first elastic member 110a Since the exit angle is enlarged, the return path of the tennis ball B is gradually enlarged. Therefore, in this configuration, there is a problem that the areas of the second elastic member 110b, the third elastic member 110c, and the fourth elastic member 110d installed following the first elastic member 110a must be gradually formed. have.

However, as shown in (b) of FIG. 8, a fifth elastic member 110e forming an obtuse angle with the first elastic member 110a is additionally disposed on the upper side of the first elastic member 110a, When the elastic member 110a and the fifth elastic member 110e are disposed within the range of the first direction A1, it is possible to prevent the range of the second direction A2 from being expanded. Accordingly, the second elastic member 110b, the third elastic member 110c and the fourth elastic member (110b) receiving the tennis ball (B) bounced from the first elastic member (110a) and the fifth elastic member (110e) It is not necessary to design the area of 110d) gradually larger, and since the angle of the return path of the tennis ball (B) decreases, it is possible to provide an advantage of being easy to repeat the rally.

On the other hand, the plurality of elastic members 110 as described above may be connected in a rotatable state with the adjacent elastic member 110 by a rotation shaft (H). That is, when the plurality of elastic members 110 are connected to each other in a rotatable state, the inclination angle of the elastic member 110 can be easily adjusted according to various requirements, such as a user's body shape or skill.

For example, as shown in FIG. 9, by adjusting the inclination angle of the fourth elastic member 110d so that the fifth direction A5 faces the third elastic member 110c, the fourth elastic member 110d ), the tennis ball (B) bounced back to the third elastic member (110c) moves from the third elastic member (110c) in the sixth direction (A6) toward the first elastic member (110a), and then the first elasticity It is possible to protrude from the member 110a in the seventh direction A7 toward the user. In the case of extending the return path of the tennis ball (B) in this way, the area in the first direction (A1) in which the tennis ball (B) can be returned to the user is reduced, so that the accuracy and difficulty of hitting can be increased. .

On the other hand, although not shown in the drawing, in the adjacent pair of elastic members 110, one end is connected to one side of the elastic member 110 and the other end is connected to the other side of the elastic member 110, so that a pair of elastic members 110 The angle between the elastic members 110 can be adjusted as the length is adjusted while the fixed member or the other end is connected to the elastic member 110 on one side and the other end is connected to the elastic member 110 on the other side. There may be additionally provided angle adjustment.

The detection sensor 120 is provided on each of the plurality of elastic members 110 to detect whether the corresponding elastic member 110 hits the tennis ball (B), and a light emitting unit disposed on one side of the elastic member 110 (121) and a light-receiving part 122 disposed to face the light-emitting part 121 on the other side of the elastic member 110. In this way, when detecting whether the tennis ball (B) is hit using the optical sensor, detection accuracy can be improved compared to the vibration sensor.

That is, since the vibration is generated even in the process of hitting the surrounding elastic member 110 by the tennis ball (B), it is not possible to accurately detect whether or not the hitting from each elastic member 110 through the vibration sensor. However, in the case of detecting whether the tennis ball (B) is hit through the optical sensor, the tennis ball (B) can be detected regardless of the vibration generated from the surrounding elastic member (110). It can be improved, and it is possible to accurately determine whether the tennis ball hits the plurality of elastic members 110 in what order.

In particular, the light-emitting unit 121 is made of a rod-shaped light-emitting module in which a plurality of light-emitting elements 121a are disposed along a longitudinal direction, and the light-receiving unit 122 has a plurality of light-receiving elements 122a disposed along the longitudinal direction. As a result, it may be made of a rod-shaped light-receiving module disposed on the other side of the elastic member 110, and accordingly, it is possible to accurately detect whether the tennis ball B hits even in the elastic member 110 of a large area. On the other hand, the spacing between the light emitting device 121a and the light receiving device 122a is preferably set to be smaller than the diameter of the tennis ball B so that the tennis ball B can be detected smoothly.

The determination control unit (not shown) determines whether a valid hit is made according to the result of hitting from each elastic member 110 recognized through the detection sensor 120, and determines whether the hit is valid or invalid on a separately provided scoreboard. Can be displayed.

When actually playing a tennis game, the ball hit by the user sometimes goes out, such as being caught in the net or out of the line, and there are cases where the rally is continued by being bound within the line.

In the present invention, in order for the rally to continue, the ball hit by the user must hit at least some of the elastic members 110 among the plurality of elastic members 110 in order to return to the user. Therefore, the determination control unit is set in advance in what order to hit the elastic member 110 in order for the ball hit by the user in the first direction (A1) to return to the user, and detection sensors installed on each of the plurality of elastic members 110 In/out determination can be made by determining the order in which the tennis ball hits the plurality of elastic members 110 through 120. In addition, the order of hitting, which is the criterion for determining the in/out, may be input or changed in advance by the user to adjust the difficulty level.

For example, in a state in which the user has previously set to sequentially strike the first elastic member 110a, the second elastic member 110b, the third elastic member 110c, and the fourth elastic member 110d, FIG. 3 As described above, the tennis ball (B) provided in the first direction (A1) sequentially connects the first elastic member (110a), the second elastic member (110b), the third elastic member (110c), and the fourth elastic member (110d). When the hit is bounced in the fifth direction (A5), that is, when the hit is detected in the order previously set by the user by the detection sensors 120 respectively installed on the plurality of elastic members 110, it is determined as IN Treated as an effective blow.

In addition, a tennis ball (B) is some of the detection sensors 120 installed on the first elastic member (110a), the second elastic member (110b), the third elastic member (110c) and the fourth elastic member (110d) When the hit is detected only by the detection sensor 120, the hit detection sequence is different from the pre-stored sequence, or when the hit is not detected by the detection sensor 120 for a preset time, it is determined as an invalid hit. Process.

In addition, in a state in which the user hits the first elastic member 110a and the third elastic member 110c in order to reduce the difficulty, the tennis ball B is the first elastic member 110a and the third elastic member 110c. 3 In the case of striking the elastic member 110c in sequence or the first elastic member 110a, the second elastic member 110b, and the third elastic member 110c in sequence, it is determined as phosphorus (IN) and is effective. Treat it as a blow.

Meanwhile, when the return path of the tennis ball B is extended by adjusting the inclination angle of the fourth elastic member 110d as shown in FIG. 9, the determination control unit includes a detection sensor 120 installed on each of the elastic members 110. The first elastic member (110a), the second elastic member (110b), the third elastic member (110c), the fourth elastic member (110d), the third elastic member (110c), the order of the first elastic member (110a) Only when a low hit is detected, it is determined as IN, and when a hit is detected only in some detection sensors 120 or the detection order is different, it may be determined as OUT. In the case of extending the return path of the tennis ball B as described above, since the range of the first direction A1 for determining as IN is reduced, the accuracy and difficulty of hitting can be increased.

On the other hand, since the fifth elastic member 110e is disposed together with the first elastic member 110a to reduce the emission angle of the first elastic member 110a, the fifth elastic member 110a is replaced with the first elastic member 110a. Even if a hit is detected in the member 110e, it would be desirable to recognize that it was hit by the first elastic member 110a.

On the other hand, the plurality of elastic members 110, as shown in Figures 5 and 6, may be arranged in a form in which adjacent ends cross each other. When connecting the plurality of elastic members 110 in this way, it is possible to prevent the tennis ball (B) from escaping to the connecting portion between the plurality of elastic members 110, as well as the tennis ball (B) hit by the user. Despite being hit in this effective direction, it is possible to prevent the frame 111 of the elastic member 110 from being bounced off in an irregular direction by colliding with the frame 111 of the elastic member 110, so that the rally is unnecessarily stopped.

Specifically, the plurality of elastic members 110 have a frame 111 in the form of a rectangular frame with an opening in the center, and at the central opening of the frame 111 so as to elastically bounce the tennis ball B. It includes a mesh net 112 installed in a taut pulled state.

In addition, the elastic member 110 may be fixed to a structure such as a floor surface or a wall surface by a support, and the angle of the elastic member 110 may be adjusted by an angle adjusting unit disposed between the frame 111 and the support. I can. In addition, the support may be adjusted in length or slidably assembled on the structure to adjust the position of the elastic member 110.

The frame 111 is a pair of side members 111a that are spaced side by side to form a square frame, and a connection member 111b that connects the upper and lower ends of the pair of side members 111a, respectively. The side member 111a and the connecting member 111b may have a plurality of through holes 111c formed along the length direction for installation of the mesh network 112.

In addition, the plurality of elastic members 110 are arranged in a form in which ends of an adjacent pair of elastic members 110 cross each other. That is, the adjacent pair of elastic members 110 have different lengths of the connecting members 111b, and the frame 111 of the one side elastic member 110 is inserted into the central opening of the other frame 111 Therefore, when viewed from the side, the side members 111a of the two frames 111 may be disposed to cross each other.

The mesh network 112 is a wire installed along the through hole 111c formed in the side member 111a and the connecting member 111b of the frame 111 and disposed in a grid form in the central opening of the frame 111. Can be configured.

On the other hand, the crossing portions of the adjacent pair of elastic members 110 may be connected in a rotatable state by a rotation shaft (H).

This rotation shaft (H) is a pair of adjacent elastic members 110 to be rotatably connected, and penetrates a pair of side members 111a disposed adjacent to each other at the intersection of the adjacent pair of elastic members 110 Is installed. Therefore, since the adjacent pair of elastic members 110 can rotate around the rotation axis H, the inclination angle of the elastic member 110 can be easily changed.

On the other hand, the side member (111a) is formed with an insertion hole (111d) through which the rotation shaft (H) can be inserted, and the insertion hole (111d) is a side member from the end of the side member (111a) when viewed from the side. It is arranged at a position spaced a predetermined interval toward the center of (111a). Therefore, while the adjacent pair of elastic members 110 are disposed to overlap each other, the mesh net 112 of both sides of the elastic member 110 is firmly supported by the frame 111, respectively, to stably maintain the elastic plane, Since the frame 111 does not exist at the intersection of the two mesh nets 112, it is possible to prevent the tennis ball B from being bounced irregularly by the frame 111 at the boundary as in the related art.

The through hole (111c) is disposed at a position inclined toward the front receiving the tennis ball (B) within the cross-section of the side member (111a), the insertion hole (111d) is within the cross-section of the side member (111a) It is disposed in a position skewed toward the rear, which is located opposite to the front. Therefore, since the insertion hole 111d for inserting the rotation shaft H can be prevented from overlapping with the through hole 111c for installing the mesh net 112, the spacing of the through hole 111c by the insertion hole 111d It can prevent this irregularity.

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms within the scope of the appended claims. Without departing from the gist of the present invention claimed in the claims, any person of ordinary skill in the art to which the present invention belongs is considered to be within the scope of the description of the claims of the present invention to various ranges that can be modified.

110: elastic member, 110a: first elastic member, 110b: second elastic member,
110c: a third elastic member, 110d: a fourth elastic member, 110e: a fifth elastic member,
111: frame, 111a: side member, 111b: connecting member,
111c: through hole, 111d: insertion hole, 112: mesh net,
120: sensing sensor, 121: light-emitting unit, 121a: light-emitting element,
122: light receiving unit, 122a: light receiving element, H: rotating shaft, B: tennis ball

Claims (10)

An elastic member configured to elastically bounce the tennis ball, a plurality of elastic members disposed in front of the user at different angles;
A detection sensor provided on each of the elastic members to detect whether a tennis ball is hit; And
A multi-directional tennis practice apparatus having an effective hit recognition function comprising a; determination control unit for determining whether or not the tennis ball hit by the user is in or out through the measured values of the detection sensors provided on the elastic members. The method of claim 1,
The detection sensor includes a light emitting unit disposed on one side of the elastic member and a light receiving unit disposed to face the light emitting unit on the other side of the elastic member. The method of claim 2,
The light-emitting unit is composed of a rod-shaped light-emitting module in which a plurality of light-emitting elements are arranged along a longitudinal direction, and the light-receiving unit is composed of a rod-shaped light-receiving module disposed on the other side of the elastic member by placing a plurality of light-receiving elements along the longitudinal direction. Multi-directional tennis practice device with an effective hit recognition function, characterized in that. The method of claim 3,
The multi-directional tennis practice apparatus with an effective hit recognition function, characterized in that the arrangement interval of the light emitting element and the light receiving element is set smaller than the diameter of the tennis ball. The method of claim 1,
The determination control unit determines the user's hit as IN when the measured values of the detection sensors each provided in the plurality of elastic members are recognized according to a preset order, multi-directional tennis with an effective hit recognition function, characterized in that Exercise device. The method of claim 1,
The inclination angle of the elastic member is set so that the tennis ball hit by the user is bounced off by a plurality of elastic members and returned to the user. The method of claim 6,
The elastic member is a first elastic member for repelling a tennis ball provided in a first direction by a user's strike in a second direction; And, a tennis ball provided in a second direction from the first elastic member in a third direction. Includes; a second elastic member that bounces off,
The second direction and the third direction form at least a part of a return path in which the tennis ball bounced from the first elastic member returns to the user. The method of claim 7,
The elastic member further comprises a fifth elastic member disposed to form an obtuse angle with the first elastic member in order to reduce the emission angle of the first elastic member. Multidirectional tennis practice with an effective hit recognition function, characterized in that it further comprises Device. The method of claim 8,
The determination control unit recognizes the measured value of the detection sensor installed on the fifth elastic member as a measurement value of the detection sensor installed on the first elastic member, multi-directional tennis practice apparatus with an effective hit recognition function. The method of claim 7,
The elastic member is a multi-directional tennis practice apparatus with an effective hit recognition function, characterized in that it comprises a frame with an open center and a mesh net supported by the frame in a stretched state.

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