KR101812146B1 - Return type appratus for excersing tennis - Google Patents

Abstract

An invention on a return type tennis practice apparatus is disclosed. The return type tennis practice apparatus disclosed in this publication includes: a frame for supporting a load; a receiving portion for receiving a tennis ball placed on the frame; a reversing portion for reversing a tennis ball that rises along the receiving portion; And a position determining unit for determining a returning position of the tennis ball by adjusting a height of the ball.

Description

RETURN TYPE APPRATUS FOR EXCERSING TENNIS

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a return type tennis practice apparatus, and more particularly, to a return type tennis practice apparatus which includes a positioning unit for returning a ball hit from a tennis racket, Type tennis practice apparatus.

Generally, tennis is increasingly popular in personal fitness and hobbies. However, in order to practice tennis, a separate tennis practice room with a tennis court in a large space was needed. In order to practice in such a tennis court, As a result, many restrictions are placed on the economy and tennis is not widely available to the general public.

On the other hand, in order to practice tennis, it is difficult to practice alone because it requires a partner to take a hit ball. In order to overcome such disadvantages, tennis practice apparatuses have been used which allow a user to swing a tennis racket and to return a hit tennis ball to the user.

The conventional tennis practice apparatus includes a return type tennis practice apparatus for practicing the tennis ball by hitting it, and an automatic feeding type practice apparatus for practicing the tennis ball supplied from the ball supply apparatus.

In the conventional return type tennis practice apparatus, a court is installed on a court support, a court support is supported on a court support, and a return position of the tennis ball to be returned upon hitting the tennis ball is determined, .

In addition, the conventional return type tennis practice device has a problem in that the struck tennis ball is returned through the return hole of the ball collecting member, the structure is difficult to handle, and the manufacturing cost is increased.

Therefore, there is a need to improve this.

The background art of the present invention is disclosed in Korean Patent Registration No. 10-0860881 (entitled "Tennis Swing Exercise Machine", September 23, 2008).

The present invention provides a return type tennis practice apparatus capable of regulating a return position of a tennis ball hit by a tennis racket with a position determining unit, And the like.

According to an aspect of the present invention, there is provided a return type tennis practice device comprising: a frame for supporting a load; A receiving portion disposed in the frame for receiving the hit tennis ball; An inverting part for inverting the tennis ball which rises along the receiving part; And a position determining unit for determining a returning position of the tennis ball by adjusting a height of the tennis ball which is reversely moved by the inverting unit.

The receiving portion may include an elastic force receiving member disposed slantingly between the frames to elastically receive the tennis ball; And an engaging portion for fixing the elastic force receiving member to the inverting portion and the frame.

Further, the elastic force receiving member may be formed of at least one of a cloth, a net, and a vinyl sheet.

The engaging portion may include: a first engaging member provided on the frame; And a second engaging member provided at an edge of the elastic force receiving member to be coupled to the first engaging member.

The reversing unit may further include: a guide member for guiding the tennis ball to roll up through the receiving portion; A reversing bracket for supporting the guide member from the outside and causing the tennis ball to roll to hit and reverse move; And a mounting portion for mounting the reversing bracket on the frame.

The reversing bracket may further include: a support shaft member coupled to the frame; A pair of side plate members supported by the support shaft member; A pair of connecting members interconnecting the side plate members on the upper and lower sides; A reversing member which is connected to the side plate member and in which the tennis ball moving through the guide member hits and reversely moves; And a restricting portion which couples the supporting shaft member and the side plate member to each other.

In addition, a plurality of curved bending plates are coupled to the connecting member to reinforce the guide member, and the mounting portion includes a fitting hole formed in the frame. And a fitting portion formed narrowly at a lower end of the supporting shaft member so as to be inserted into the fitting hole.

The restricting portion may include: a fixing member provided on the supporting shaft member and having a groove portion inserted into the side plate member; And a tightening member penetratingly connecting the fixing member and the side plate member.

Further, the side plate member may further include a speed adjusting unit for adjusting a speed of the tennis ball moving toward the reversing member, wherein the speed adjusting unit includes: a slide hole formed in each of the side plate members; A speed adjusting rod disposed across the slide hole and adjusting a moving speed of the tennis ball which is in contact with the outer circumferential surface, And an adjusting coupling member coupled to the speed adjusting rod and fixing the speed adjusting rod to the side plate member.

The positioning unit may further include: a lifting inducing member connected to the frame in a lateral direction to cause the tennis ball descending along the elastic receiving member to collide with the lifting member; A plurality of hook members provided on the upper and lower sides of the frame; And a position adjusting member for adjusting a moving position of the tennis ball which is protruded from the rising guide member by adjusting the inclination angle of the elastic receiving member by hooking the elastic receiving member downward by being hooked on any one of the hooking members .

In addition, the position adjusting member may be provided on the elastic force receiving member and spaced apart from the rear side of the upward guide member, and a plurality of the hook members may be provided on the frame at upper and lower setting intervals to selectively hold the position adjusting member And the inclination angle of the lower end of the elastic receiving member is adjusted.

In addition, on both sides of the elastic receiving member, there is provided a side shielding member for preventing the tennis ball hit by the elastic receiving member from slipping off to the side, and the side shielding member is made of at least one of cloth, , The side shielding member is caught and fixed to the fastening member coupled to the frame through the detachment member.

In addition, the frame may be provided with a drop preventing portion for preventing the tennis ball which is reversely moved by the inverting portion from falling out of the receiving portion, and the drop preventing portion may include a drop preventing portion provided at a lower portion of the inverting portion, ; And a drop preventing member provided on an outer circumferential surface of the connecting rod and guiding the tennis ball dropped by the inverting portion inward.

The return type tennis practice device according to the present invention may exercise the ball returned from the tennis racket by returning the ball and adjust the return position of the tennis ball hit by the tennis racket.

Further, according to the present invention, the tennis ball moving upward in accordance with the accommodating portion is inverted while guiding the tennis ball from the inverting portion to an arc shape, thereby improving the return performance by accurately guiding the trajectory of the tennis ball.

1 is a perspective view of a return type tennis practice apparatus according to an embodiment of the present invention.
2 is a front elevational view of a return type tennis practice apparatus according to an embodiment of the present invention.
3 is an inverted side view of a return type tennis practice device according to an embodiment of the present invention.
4 is an inverted rear perspective view of a return type tennis practice device according to an embodiment of the present invention.
5 is an exploded perspective view of an inverting part according to an embodiment of the present invention.
6 is an assembled perspective view of FIG.
7 is a perspective view of a positioning part of a return type tennis practice device according to an embodiment of the present invention.
FIG. 8 is a view showing a state in which a bouncing amount of a tennis ball is adjusted using a positioning unit according to an embodiment of the present invention.

Hereinafter, a return-type tennis practice apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a return type tennis practice apparatus according to an embodiment of the present invention, FIG. 2 is a front elevational view of a return type tennis practice apparatus according to an embodiment of the present invention, FIG. 4 is a rear perspective view of an inverted tennis practice device according to an embodiment of the present invention. FIG. 5 is a side view of the inverted tennis practice device according to an embodiment of the present invention. FIG. 7 is a perspective view of a positioning part of a return type tennis practice device according to an embodiment of the present invention, and FIG. 8 is a perspective view of a positioning part according to an embodiment of the present invention. And the amount of bouncing of the tennis ball is controlled by using the tennis ball.

Referring to FIGS. 1 to 9, the return type tennis practice apparatus according to an embodiment of the present invention includes a frame 100, a receiving unit 200, an inverting unit 300, and a positioning unit 400.

The frame 100 supports the load and forms the outer shape of the return type tennis practice device. The frame 100 has four pillars extending upward from the lower side so as to have a space portion capable of hitting the tennis ball, .

The frame 100 may have any shape as long as it can accommodate a hit tennis ball. The frame 100 may be formed by interconnecting pipes made of metal or synthetic resin.

The frame 100 includes a pair of front frames 110 disposed on the front side and a pair of rear frames 120 spaced apart from the rear side of the front frames 110 and disposed on the upper and lower sides, And a lower frame 130 interconnecting the lower end of the rear frame 120.

The front frame 110 may be formed by extending vertically from the lower side to the upper side and bending backward from the upper side portion where the tennis ball is received. When the tennis ball is struck by the tennis racket, the tennis ball hit on the front frame 110 of the frame 100 is bounced upwards or sideways to prevent the user from touching the tennis ball.

In addition, the front side frame 110 may be provided with a cushioning member 140 that slows down the collision speed by buffering the hit tennis ball.

The cushioning member 140 is made of soft synthetic resin or rubber or the like, thereby reducing the speed at which the tennis ball is bounced. Thus, in the course of tennis practice, it is possible to prevent a tennis ball hitting the front frame 110 from colliding with passing people, thereby preventing a safety accident.

The receiving portion 200 is provided in the frame 100 to receive the struck tennis ball.

The receiving portion 100 includes an elastic force receiving member 210 disposed to be inclined between the frames 100 to elastically receive the tennis balls and a coupling member 210 for fixing the elastic force receiving member 210 to the inverting portion 300 and the frame 100 (Not shown).

The elastic receiving member 210 may be formed of at least one of a cloth, a net, and a vinyl sheet. In this figure, a state in which the elastic force receiving member 210 is used as a mesh is shown and described.

When the elastic receiving member 210 is assembled to the flame 100 and the inverting unit 300, when the tennis ball is struck by the tennis racket while maintaining a proper elasticity, the elastic receiving member 210 elastically receives the tennis ball that is being fed, And is guided to the inverting unit 300 while rolling upward along the inclined surface of the elastic receiving member 210.

The engaging portion 220 includes a first engaging member 222 provided on the frame 100 and a second engaging member 224 provided on an edge of the resilient receiving member 210 to be coupled to the first engaging member 222. [ .

The first engaging member 222 may be at least one of a bolt, a screw, and a rivet that is coupled to the frame 100 or the side plate member 350 of the inverting unit 300. The second engagement member 260 is installed in the insertion hole formed in the elastic receiving member 210 so as to penetrate the edge. A ring member is provided in the insertion hole to prevent the elastic force receiving member 210 from being torn when the first engagement member 224 is installed. The ring member is formed in a circular shape, is fitted to the rim of the insertion hole, and then is fixed by compression so that it is firmly fixed to the insertion hole.

The second engagement member 224 may be at least one of an elastic string, a string, a ring, a wire, and a hook.

In this drawing, the first engaging member 250 is shown as a bolt.

When the first engageable member 150 is engaged with the frame 100, the head portion is exposed, so that the second engageable member 260 is engaged and engaged with the frame 100.

The inverting unit 300 is provided in the frame 100 and moves up along the accommodating unit 200 to make a turn.

The inverting unit 300 includes a guide member 310 for guiding a tennis ball to be rolled upward through the receiving unit 200 and a reversing bracket 310 for supporting the guide member 310 from the outside, And a mounting unit 330 for mounting the reversing bracket 320 on the frame 100.

The guide member 310 and the inverting bracket 320 are formed in an arc shape.

The guide member 310 is preferably formed in a semicircular shape when viewed from the side, and a synthetic resin material having a lattice-like net shape can be applied.

The inversion bracket 320 includes a support shaft member 340 coupled to the frame 100, a pair of side plate members 350 supported by the support shaft member 340, and a pair of side plate members 350, A reversing member 370 which is connected to the side plate member 350 and is connected to the side plate member 350 so that the tennis ball moving through the guide member 310 collides against the reversing member 370, And the restraining portion 380 which couples the side plate member 350 and the side plate member 350 together.

The side plate member 350 is formed of a semicircular plate material, and a plurality of through holes may be formed to penetrate laterally. The side plate members 350 are formed symmetrically on both sides.

The connection members 360 are connected to each other in a rectangular plate shape at the upper and lower outer edges of the arc portion of the side plate member 350 to interconnect and support the pair of side plate members 350. The connecting member 360 is joined to the side plate member 350 by at least one of rivets, screws, and bolts.

A plurality of curved bending plates 362 are coupled to the connecting member 360 to reinforce and support the guide member 310.

The bending plate 362 is fixed to the connecting member 360 by bending a rectangular plate member into a semicircular shape and connecting both ends of the bending plate 362 that are in contact with the connecting member 360 with at least one of rivets, screws, and bolts.

The bending plate 362 supports the bending plate 362 from the rear side when the bending plate 362 is bent backward by the tennis ball moving along the inner surface of the guide member 360, do. The bending plate 362 can be increased or decreased in consideration of the support strength.

The inversion member 370 is interconnected to the pair of side plate members 350 at the straight portion edge of the side plate member 350. [ The reversing member 370 may be any shape as long as it can be reversed in the direction opposite to the direction in which the tennis ball is hit by the rectangular plate member. The inversion member 370 may be one or more.

7, when the user hits the tennis ball using the tennis racket, the tennis ball is moved upward along the inclined surface of the elastic force receiving member 210 while hitting the elastic receiving member 210, The guide member 310 of the guide member 310 moves backward and slopes downward while bumping against the semi-stick member 310.

The mounting portion 330 has a fitting hole 332 formed in the upper end of the front frame 110 of the frame 100 and a narrow hole formed in the lower end portion of the supporting shaft 340 so as to be inserted into the fitting hole 332. [ (Not shown).

The restricting portion 380 has a fixing member 382 provided on the supporting shaft member 340 and having a recessed portion 384 to be inserted into the side plate member 350 and a fixing member 382 which penetrates the fixing member 382 and the side plate member 350 And a tightening member 386 which engages.

The fixing member 382 is formed so that the tightening member 386 is flat. The fixing member 382 is formed symmetrically on both sides with respect to the recessed portion 384.

The tightening member 386 may be a screw or bolt.

The side plate member 350 may further include a speed adjusting unit 390 for adjusting a moving speed of the tennis ball moving toward the reversing member 370.

The speed adjusting unit 390 includes a slide hole 392 formed in the shape of a long hole in each of the side plate members 350 and a pair of side plates 350 disposed across the slide hole 392 and adjusting the distance between the guide member 310, And a regulating engaging member 396 coupled to the speed regulating rod 394 and fixing the speed regulating rod 394 to the side plate member 350 .

The gap between the slide hole 392 and the guide member 310 becomes narrower from the side plate member 350 toward the inversion member 370 side. As a result, since the tennis ball passing between the guide member 310 and the speed adjusting rod 394 is in contact with the speed adjusting rod 394 a large amount, the moving member 373 hits the reversing member 370 in a state in which the moving speed is reduced, .

The gap between the slide member 392 and the guide member 310 increases toward the side opposite to the inversion member 370 in the side plate member 350. [ As a result, since the tennis ball passing between the guide member 310 and the speed adjusting rod 394 is slightly in contact with the speed adjusting rod 394, the tennis ball hits the reversing member 370 in a state in which the moving speed is not reduced, do.

In this way, it is possible to adjust the moving speed of the tennis ball as it moves left or right along the slide hole 392 of the speed adjusting rod 394 while repeating the process of loosening or tightening the adjusting coupling member 396 .

The positioning unit 400 is configured to determine the return position of the tennis ball by adjusting the height of the tennis ball which is reversely moved by the inverting unit 300. [

That is, the positioning unit 400 may be provided at the lower end of the accommodating unit 200 so as to be adjustable in angle, so as to determine the return position of the tennis ball reversed by the inverting unit 300.

The positioning unit 400 includes a rising guide member 410 connected to the frame 100 in the lateral direction to cause the tennis ball descending along the elastic receiving member 210 to collide with and protrude from the frame 100, The hanger member 420 is provided with the hanger member 410 and the hanger member 420 is pulled downward to hang the hanger member 420 to adjust the inclination angle of the hanger accommodation member 210, And a position adjusting member 430 for adjusting the return position of the bouncing tennis ball.

The lifting guide member 410 is installed across the frame 100 to support the inclined lower end of the elastic receiving member 210. The lifting guide member 300 may be formed as a circular bar so that the tennis ball moving downward in the elastic receiving member 210 may hit the bottom and bounce well.

The lifting guide member 300 is engaged with the front frame 110 of the frame 100.

The elastic receiving member 210 may be extended only up to the up-and-down guide member 300 or extend up to a certain extent downward while being seated on the up-and-down guide member 300.

The position adjusting member 430 is provided on the elastic receiving member 210, and is disposed on the rear side of the rising guide member 410.

The position adjusting member 430 may be at least one of a string, a string, a hook, and a hook.

A plurality of hooking members 420 are provided on the frame 100 at upper and lower intervals so that the position adjusting member 430 is selectively hooked so that the inclination angle of the lower end of the elastic receiving member 210 is adjusted.

The side surface blocking member 230 may be provided on both sides of the elastic force receiving member 210 to prevent the tennis balls from colliding with the side surface of the elastic force receiving member 230.

The side shielding member 230 is made of at least one of a cloth, a net, and a vinyl sheet.

The side shielding member 230 can be caught and fixed to the fastening member 250 coupled to the frame 100 through the detachable member 240.

The hooking member 420 may be at least one of a fastening bolt, a screw, and a rivet. In the figure, the bolts are used.

The hooking member 420 is a plurality of bolts provided on the front frame 110 of the frame 100 so as to have upper and lower setting intervals. Although three hook members 420 are shown to adjust the inclination angle, two or four hook members 420 may be formed.

The position adjusting member 430 may be at least one of an elastic string, a string, a hook, and a hook. In the figure, the elastic cord is shown.

The position adjusting member 430 is provided at the edge of the elastic force receiving member 210 and is spaced apart from the rear side of the upward guide member 410 by a predetermined interval to adjust the inclination angle of the lower end of the elastic force receiving member 210, It is possible to adjust the returning position where the user can strike the tennis ball by adjusting the height at which the tennis ball descending along the tennis racket 210 collides with the rising guide 410.

9, when the position adjusting member 430 is hooked on the hook member 420 located at the uppermost position, the amount of the elastic force receiving member 210 pulled downward is little or small, 210 are kept constant. Accordingly, since the tennis ball descending along the elastic receiving member 210 slides on the rising guide member 410, the height of the tennis ball is small or kept horizontal so that the returning position of the tennis ball can be detected from the frame 100 It is located at a short distance.

9, when the position adjusting member 430 is hooked on the hook member 420 positioned at the middle, the amount of the elastic force receiving member 210 pulled downward is intermediate, Is maintained at a middle level. As a result, the tennis ball descending along the elastic receiving member 210 hits the intermediate position of the rising guide member 410, so that the returning position of the tennis ball is located at a regular distance from the frame 100. That is, the fact that the tennis ball hits the intermediate position of the ascent guide member 410 means that the tennis ball hits at an approximately 45 degree angle, so that the tennis ball moves the farthest away.

9, when the position adjusting member 430 is hooked on the hook member 420 positioned at the lowest position, the amount of the elastic force receiving member 210 pulled downward is large, The angle of inclination of the tapered portion is large. As the tennis ball descending along the elastic receiving member 210 bumps against the rising guide member 410 in a thicker manner, the height of the tennis ball is increased so that the return position of the tennis ball is shortened from the frame 100, Located on the street.

In addition, four or more hooking members 420 may be formed on the frame 100 to precisely control the height of the tennis ball and the distance from the frame 100.

5 to 7, the frame 100 may be provided with a fall preventing part 500 for preventing the tennis ball, which is reversely moved by the inverting part 300, from falling off the receiving part 200.

The fall preventing unit 500 includes a connecting rod 510 provided on the lower side of the inverting unit 300 across the frame 100 and a connecting rod 510 provided on the outer circumferential surface of the connecting rod 510, And a fall preventing member 520 for guiding the ball inward.

The connecting rod 510 is disposed across the upper portion of the front frame 110 of the frame 100.

The returning member of the inversion member 3700 collides against the drop prevention member 520 provided adjacent to the lower side of the reversing member 370 to excessively return to the reverse side of the reversing member 3700, So that the tennis ball can be prevented from moving out of the accommodating portion 200.

Therefore, the return type tennis practice apparatus according to an embodiment of the present invention can practice the ball returned from the tennis racket by returning the ball, and adjust the return position of the tennis ball hit by the tennis racket with the positioning unit.

Further, according to the present invention, the tennis ball moving upward in accordance with the accommodating portion is inverted while guiding the tennis ball from the inverting portion to an arc shape, thereby improving the return performance by accurately guiding the trajectory of the tennis ball.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

100: frame 110: front frame
120: rear frame 130: lower frame
200: accommodating portion 210: elastic receiving member
220: engaging portion 222: first engaging member
224: second coupling member 300:
310: guide member 320: inverting bracket
330: mounting portion 332:
334: fitting portion 340: supporting shaft member
350: side plate member 360: connecting member
362: bending plate 370: inversion member
380: restricting portion 382: fixing member
386: tightening member 390: speed adjusting section
392: Slide hole 394: Speed adjusting rod
396: Adjustable coupling member 400: Positioning portion
410: a lifting guide member 420: a hook member
430: Position adjusting member 500:
510: connecting rod 520: fall preventing member

Claims (13)

A frame supporting the load;
A receiving portion disposed in the frame for receiving the hit tennis ball;
An inverting part for inverting the tennis ball which rises along the receiving part; And
And a position determining unit for determining a returning position of the tennis ball by adjusting a height of the tennis ball which is reversely moved by the inverting unit,
Wherein,
A guide member for guiding the tennis ball to roll up through the receiving portion;
A reversing bracket for supporting the guide member from the outside and causing the tennis ball to roll to hit and reverse move; And
And a mounting portion for mounting the inverting bracket on the frame,
The inversion bracket
A support shaft member coupled to the frame;
A pair of side plate members supported by the support shaft member;
A pair of connecting members interconnecting the side plate members on the upper and lower sides;
A reversing member which is connected to the side plate member and in which the tennis ball moving through the guide member hits and reversely moves; And
And a restricting portion which couples the supporting shaft member and the side plate member to each other
And a return tennis training device.
The method according to claim 1,
The receiving portion includes:
An elastic force receiving member disposed between the frames so as to be inclined to elastically receive the tennis ball; And
And an engaging portion fixing the elastic force receiving member to the inverting portion and the frame
Wherein the tennis practice apparatus is a return type tennis practice apparatus.
3. The method of claim 2,
Wherein the elastic receiving member comprises at least one of a cloth, a net, and a vinyl sheet.
3. The method of claim 2,
The coupling portion
A first engaging member provided on the frame; And
And a second engaging member provided at an edge of the elastic force receiving member to be coupled to the first engaging member:
And a return tennis training device.
delete delete The method according to claim 1,
A plurality of curved bending plates are coupled to the connecting member to reinforce and support the guide member,
The mounting portion includes: a fitting hole formed in the frame; And
And a fitting portion narrowly formed at a lower end of the supporting shaft member so as to be inserted into the fitting hole.
The method according to claim 1,
The restraining portion
A fixing member provided on the supporting shaft member and having a groove portion to be inserted into the side plate member; And
And a tightening member penetratingly connecting the fixing member and the side plate member
And a return tennis training device.
The method according to claim 1,
Wherein the side plate member further includes a speed adjusting unit for adjusting a speed of the tennis ball moving toward the reversing member,
The speed controller may include:
A slide hole formed in each of the side plate members in the form of a slot;
A speed adjusting rod disposed across the slide hole and adjusting a moving speed of the tennis ball which is in contact with the outer circumferential surface, And
An adjusting member coupled to the speed adjusting rod and fixing the speed adjusting rod to the side plate member;
And a return tennis training device.
3. The method of claim 2,
Wherein the positioning unit comprises:
A rising inducing member connected to the frame in the transverse direction to cause the tennis ball descending along the elastic receiving member to collide with and protrude;
A plurality of hook members provided on the upper and lower sides of the frame; And
And a position adjusting member for adjusting the tilt angle of the elastic receiving member by engaging with one of the hooking members by pulling down the elastic receiving member downward to adjust the returning position of the tennis ball that hits the rising guide member,
And a return tennis training device.
11. The method of claim 10,
Wherein the position adjusting member is provided on the elastic force receiving member and is disposed on the rear side of the rising guide member,
Wherein a plurality of the hooking members are provided on the frame at upper and lower intervals so that the position adjusting member is selectively hooked so that the inclination angle of the lower end of the elastic receiving member is adjusted.
12. The method of claim 11,
Side surface blocking members are provided on both sides of the elastic-force-receiving member to prevent the tennis ball, which is hit by the elastic-force-receiving member,
Wherein the side shielding member is made of at least one of a cloth, a net, and a vinyl sheet,
Wherein the side blocking member is caught and fixed to a fastening member coupled to the frame through a detachment member.
13. The method according to any one of claims 1 to 4 and 7 to 12,
Wherein the frame is provided with a drop preventing portion for preventing the tennis ball reversely moving at the inverting portion from falling out of the receiving portion,
The fall-
A connecting rod provided across the frame at a lower portion of the inverting portion; And
And a drop preventing member provided on an outer circumferential surface of the connecting rod and guiding the tennis ball dropped by the inverting portion inwardly
And a return tennis training device.

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