JP5564172B2 - Tennis practice equipment - Google Patents

Description

  The present invention relates to a tennis training apparatus, and particularly relates to a novel structure that exhibits a remarkable effect in improving actual batting skills.

In general, when performing tennis hitting alone, techniques such as hitting a ball using a vertical wall and practicing by hitting the return ball again, or hitting a ball attached to a stretchable string are used. It has been. However, such a method does not sufficiently increase the effect of actual driving practice, and is not close to a vertical wall suitable for driving a ball, for example, and the practice environment is limited.
For this reason, as a tennis practice device that can be installed at an appropriate practice place, for example, it is installed in a slanted state in front of the player who practice the hitting ball receiving sheet, and the upper end of the device is in front of it. By forming a bowl-shaped reversing guide portion that is curved in a side view, the striking hit ball that has been driven into the hitting ball receiving sheet is guided so as to return at the upper reversing guide portion, and along the hitting ball receiving sheet as a return hitting ball. There has been proposed a configuration in which the returned ball hits and returns to the place where the returned ball bounces again from the ground or floor (Patent Documents 1, 2, and 3).

However, in actuality, when the return hit ball comes back on the hit ball receiving sheet, no special device is used, and unless the set angle with respect to the base surface of the hit ball receiving sheet is changed, it is always constant. The return hit ball jumps out of the hit ball receiving sheet at an angle and bounces at the same place. As a result, the player always strikes back at the same place, and a practical skill-up effect is not always obtained sufficiently.
The conditions for improving this skill are that the variation of the return hit ball can be freely selected and that the elevation angle of the hit ball can be tested as appropriate. Specifically, the ball speed is fast and the high hit point (the hit position). ), Or a low hitting return ball, a slow hitting speed, a high hitting point or a return hitting ball with a low hitting point, and even if the elevation angle of the hitting ball changes, it is sufficient not to miss the hitting ball. The ball receiving sheet has been developed, and these are required.
However, as described above, the conventional method does not have a configuration that can expect such an effect.
Japanese Utility Model Publication No. 58-153871 Japanese Utility Model Publication No. 58-117667 Japanese Utility Model Publication No. 58-101474

  The present invention has been made in consideration of these various backgrounds, and in addition to acquiring the correct batting form, the present inventors have attempted to develop a new tennis training apparatus that can perform more advanced exercises when mastered. Is.

The tennis practice apparatus according to claim 1 is a seat support frame that can be installed at an appropriate practice place, a hit ball receiving sheet that is supported by the seat support frame so as to be developed in an upwardly inclined manner, and an upper end of the hit ball receiving sheet. A reversing guide portion provided in a bowl shape curved in a side view toward the front side, and the hitting ball hit by the player is received by the hitting ball receiving sheet and then reversed by the reversing guide portion to become a return hitting ball. In the device that descends along the hit ball receiving sheet and jumps out of the hit ball receiving sheet, bounces at the base of the practice place and returns to the vicinity of the player again, and the player hits the return hit ball again to continue the hit ball practice. hitting receiving sheet is comprises a return hit ball guiding structure the player can select some suitable Uchikaeshi position, this return hitting The guiding structure is a first guiding structure that changes the setting of the tension surface near the lower end of the hit ball receiving sheet to a valley folded state with respect to the tension surface of the hit ball receiving portion. The structure is characterized in that it is configured to be smoothly curved without being angular at the boundary portion between the upper hitting ball receiving portion and the lower guiding portion .

According Tennis practice device of claim 2, wherein, in addition to the requirements of claim 1, wherein, for the return hitting guiding structure, hitting receiving comprises a top guide sheet covering the upper surface of the sheet in the width direction, the top guide sheet, The tension angle is set to be shallower than the tension angle of the hit ball receiving sheet, and the tip edge passes through the hit ball passing through the lower surface of the upper guide sheet while being in contact with the hit ball receiving sheet, while the return hit ball passes through the upper surface. It is characterized by including a second guiding structure to be passed.

The tennis practice device according to claim 3 is configured such that, in addition to the requirement according to claim 1 or 2 , the reversing guide portion is configured such that an upper end portion of the hit ball receiving sheet is stretched in a bowl shape curved in a side view. It is characterized by being.

According to a fourth aspect of the present invention, in addition to the requirements of the first, second, or third aspect , the reverse guide portion is formed of a hard material having a large coefficient of restitution. .

The tennis practice device according to claim 5 is characterized in that, in addition to the requirement according to claim 3 or 4 , the reverse guide portion includes a deflection guide portion for changing a return direction of the return hit ball. It is.

The tennis practice device according to claim 6 is characterized in that, in addition to the requirement of claim 5 , the deflection guide portion is provided near one or both ends of the right and left sides in the width direction. is there.

According to the first aspect of the present invention, the hit ball receiving sheet has a return hit ball guiding structure, and the return hit ball is accurately bounced and returned near the player at a certain distance from the tennis practice device. As a result, the player can always obtain an accurate hitting form. In particular , by changing the tension of the lower end portion of the hit ball receiving sheet, the return hit ball can be guided in a desired direction, the apparatus structure is simple, and the setting desired by the player can be easily performed.

According to the second aspect of the present invention, since the upper surface guide sheet that covers the upper surface of the hit ball receiving sheet in the width direction is used, the return hit ball is guided by the upper surface guide sheet and falls from a high position. A return ball that bounces to a high speed has a moderate speed, and it is easy for beginners to practice.

According to the invention described in claim 3, the reversing guide portion provided at the upper end of the hit ball receiving sheet is formed by stretching the upper end portion of the hit ball receiving sheet in a hook shape. A tennis practice device may be provided under configuration.

According to the invention of claim 4 , since the reversing guide portion is formed of a hard material having a large coefficient of restitution, the momentum of the hitting ball is not diminished even in the reversing guide portion where the momentum of the hitting ball tends to be stopped, It is as if it is bouncing there and becomes a strong return ball. Therefore, it is possible to practice sufficiently satisfactory even for advanced players.

According to the invention described in claim 5 , the reversing guide portion is provided with a deflection guiding portion for changing the return direction of the return hit ball, and the hit hit ball is deflected in an unexpected direction when reversing. The return direction is not constant. Therefore, the player can learn the right-and-left movement according to the movement, and an appropriate practice form can be obtained for the advanced player.

According to the sixth aspect of the present invention, the deflection guide portions are provided at the left and right end portions of the reversing guide portion, and when the player performs a hitting ball swing that hits the corner portion, the reversing direction changes. Expected to return, coupled with the target setting of the driving position and the difficulty of determining the direction of the return ball, it is possible to practice more effectively for advanced players.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention includes an embodiment described below, and includes various improved embodiments based on this technical idea.

Hereinafter, the tennis training apparatus A of the present invention will be specifically described based on the illustrated embodiments.
This is used by being installed in a suitable indoor / outdoor practice place, and the ground surface or floor surface to be installed is defined as a base surface B. As shown in FIGS. 1, 2, and 3, the main structure of the tennis practice apparatus A is as follows. For example, a frame-like seat support frame 2 is attached to an appropriate base 1 in an oblique state, and this seat support is further supported. A hitting ball receiving sheet 3 is stretched over the frame 2. A reversing guide portion 4 is provided above the hitting ball receiving sheet 3, and a return hitting guide structure 33 is formed below the hit ball receiving sheet 3. The first guiding structure 33A is provided.
With such a configuration, the hit ball b1 hit by the player P with the racket R is received by the hit ball receiving sheet 3, the direction of travel of the ball is changed by the reversing guide portion 4, and becomes the return hit ball b2 again. 3, is guided by the first guiding structure 33 </ b> A, jumps out from the hit ball receiving sheet 3, and bounces again at the base surface B near the player P, and the player P hits the bounced return hit ball b <b> 2 again. Repeat this practice.

Hereinafter, each member will be described in detail.
First, the base 1 is configured using a metal pipe, a resin pipe, a pipe made of a composite material thereof, or the like, and includes a leg portion 10 that opens in the front-rear direction in a side view. A pair of left and right frame support brackets 11 are provided at the upper end of the leg 10. The frame support bracket 11 is connected to the upper ends of the pair of leg portions 10 at the leg top fulcrum 12 so as to be freely opened and closed. Further, the leg 10 includes a leg brace 13 in the middle in the vertical direction, and the leg brace 13 is configured to be bent at the center. On the other hand, the frame support bracket 11 is further provided with a frame fixed fulcrum 14 so as to protrude upward, and includes a frame adjustment fulcrum 15 at a position lower than the step.

  The seat support frame 2 is supported in an oblique state with respect to such a base 1. The seat support frame 2 is configured using a metal pipe, a resin pipe, or a pipe made of a composite material thereof, and is formed in a rectangular frame shape when viewed from the front. To do. The peripheral frame portion 20 includes a reversal frame 21 in a U-shape in a side view on the upper end side, and a fixed connection portion that is connected to the frame support bracket 11 in the base 1 substantially in the middle of the peripheral frame portion 20. 23 is formed so as to protrude downward. Further, an adjustment connection portion 25 connected to the frame adjustment fulcrum 15 is provided at a position close to the fixed connection portion 23. Specifically, the adjustment connecting portion 25 includes a connection plate 250 as a main member. The connection plate 250 includes an adjustment long hole 251 and one end thereof is a bracket 252 provided in the peripheral frame portion 20. In contrast, the pin 253 is pivotally connected.

Further, a guide stay 26 extending toward the lower surface is provided below the peripheral frame portion 20, and a plurality of adjustment hooks 260 are formed so as to be aligned vertically. Further, a guide sheet stay 27 extending toward the upper surface is provided on the peripheral frame portion 20 at a position somewhat above the guide stay 26 as shown in FIG. The operation of the guide stay 26 and the guide seat stay 27 will be described later.
In such a seat support frame 2, the fixed connection portion 23 is appropriately fixed to the frame fixed fulcrum 14 in the frame support bracket 11 of the base 1 with bolts and nuts or the like, and the connection plate 250 is connected to the frame at the long hole 251. It is fixed to the adjustment fulcrum 15 by, for example, a hand-fixable fixing bolt 151. As can be understood from this configuration, the oblique state of the seat support frame 2 can be set as appropriate by selecting an appropriate position of the long hole 251. Of course, in order to make this slanting state freely settable, it is not limited to a long hole, and a large number of adjustment holes arranged in multiple stages may be used.

Next, the hit ball receiving sheet 3 stretched on the sheet support frame 2 will be described.
For this, a resin sheet reinforced with synthetic resin fibers or the like, or an appropriate sheet material such as a so-called canvas can be used.
First, as shown in FIG. 3, the hit ball receiving sheet 3 includes a sheet body 30 cut to a size slightly smaller than the sheet support frame 2 as a main member. The seat body 30 has an attachment loop 301 or an eyelet 302 in the periphery for attachment to the seat support frame 2.
When attaching the seat body 30 to the seat support frame 2, as shown in FIGS. 3A to 3C, an appropriate method can be adopted. It can be fixed with a hook-and-loop fastener whose height can be adjusted (FIG. 3 (a)), a tension spring s can be used (FIG. 3 (b)), and an appropriate strap 31 can be knitted into the eyelet 302. For example, a method of winding and fixing can be used.

The hit ball receiving sheet 3 uses the hit ball receiving portion 32 as a range excluding the lower portion, and is provided with a hit ball guiding structure 33 at the lower portion. Specifically, it is the first guiding structure 33A of the return hitting ball guiding structure 33, and is stretched near the lower end of the hitting ball receiving sheet 3 by selectively using one of the adjustment hooks 260 in the guiding stay 26. The structure is such that the tension is further pulled downward by the spring s, and the tension surface of the lower end portion of the seat body 30 is set so as to be in a valley folded state with respect to the tension surface of the hit ball receiving portion 32. The guidance unit 331 is used. Of course as the reference embodiment which definitive in this site, may be provided to overlap the separate guide plate 332 as shown in FIG. 4 (FIG. 4 (a)), or without bending the sheet body 30, so as to provide a separate guide plate 332 (FIG. 4B) can also be considered. However, in terms of smooth guidance of the return hit ball b2, it is impossible to achieve the effect of the present invention in which the seat body 30 is folded. Further, although not shown, the sheet constituting the guiding portion 331 may be formed in a pocket shape, and the guiding plate 332 may be inserted into the sheet.
Note that the boundary between the hitting ball receiving portion 32 and the guide portion 331 in the seat main body 30 is the inner side as viewed from the upper surface of the seat main body 30 at the boundary portion when pulling downward using the guide stays 26 at the left and right ends. bending state, that although the valley fold state, without angulate, smoothly curved state can be obtained.

With respect to the hit ball receiving sheet 3, a rebound prevention flap 34 </ b> A for the hit ball b <b> 1 and a ball receiving curtain sheet 34 </ b> B can be provided at the front end portion of the guide portion 331 as indicated by a virtual line in FIG. 2. That is, the repulsion prevention flap 34A, for example, stacks a plurality of materials constituting the hit ball receiving sheet 3 to give a certain stiffness, and projects this almost horizontally from the front side portion of the peripheral frame portion 20, This prevents the hit ball b1 from directly hitting the peripheral frame portion 20 and rebounding to the player P side.
In addition, the ball receiving curtain sheet 34B is for receiving the ball so as not to jump forward when the ball b1 hits further below the ball receiving sheet 3.

Next, the reverse guide part 4 provided in the upper end part of the hit ball | bowl receiving sheet 3 is demonstrated.
The most basic embodiment, to further extend the upper end of the seat body 30 as shown in FIG. 5, which at the site of the reversing frame 21 provided on the seat support frame 2, via a tensioning spring s It is a structure in which the sheet is supported and stretched so as to be bent in a hook shape on the front side.
Of course, the reversing guide section 4 is not limited to such a configuration, and a separate reversing guide trough 41 can be used as shown in FIG. This is made of a material such as a hard resin having a sufficient coefficient of restitution, and this can be directed inward near the left and right side end portions to form the deflection guide portion 42.
This is a method for causing the hitting ball b1 reaching the reversing guide portion 4 to change the return direction by the reversing guide portion 4 and finally to express the change of the return position on the base surface B. Of course, it is preferable to use a hard reversing guide trough 41 for such a deflecting guide part 42. However, even when the reversing guide part 4 is constituted by the seat body 30, the deflecting guide part 42 is adjusted by adjusting the tensioning state. It goes without saying that it can be formed.
Further, when the reversal guide trough 41 that is hard and has a large restitution coefficient is used, a rebound material can be applied to the reversal guide surface constantly or as necessary to obtain a change in the ball speed.

The most basic configuration of the tennis training apparatus A of the present invention is as described above, and the hitting practice is performed as follows.
First, this device is installed at a position where an appropriate practice space can be secured. In installation, when the leg portion 10 of the base 1 is foldable, the seat support frame 2 is set to an upwardly inclined state at an appropriate inclination angle after being expanded to obtain a self-supporting state.
In this state, the player P hits the ball toward the hit ball receiving sheet 3 with the racket R. The driven hit ball b1 is received by the hit ball receiving portion 32 on the hit ball receiving sheet 3. However, the hit hit ball b1 further advances on the hit ball receiving sheet 3 with the momentum of hitting and reaches the reversal guide portion 4 on the upper portion thereof. Here, it is guided by the bowl-like curved shape of the reversing guide part 4, and falls as the return hitting ball b2 by dropping the hitting ball receiving part 32 on the hitting ball receiving sheet 3. Then, near the lower end, the jumping state is changed so that it rises near the horizontal or somewhat ascends by the guiding portion 331 in the return hitting guiding structure 33, and in this state, the player falls to the base surface B as shown in FIGS. Bound at a close distance of P. The player P strikes the return hit ball b2 that has bounced in this way again and continues the practice. In the present invention, the return hit ball b2 always bounces accurately on the base surface B due to the action of the return hit guide structure 33, so that repeated hitting practice can be performed, and an ideal hitting form can be learned. At this time, when the return position of the return hit ball b2 is changed, the pulling state using the adjustment hook 260 that causes the guide portion 331 to appear is changed, the extension angle of the guide portion 331 is changed, or the return hit ball is changed. The pop-up status of b2 is changed.

  At this time, if the skill-up player P has the deflection guide portions 42 at the left and right end portions of the reversing guide portion 4, the player P can practice more difficult by hitting the hit ball near both ends of the apparatus. it can. That is, due to the bending of the deflection guide portion 42, the hit ball b1 becomes a return hit ball b2 whose direction of return is deviated while being reversed, and this return hit ball b2 is hit back, as if from various directions from the opponent player in the actual game. A state that reproduces the return ball of can be obtained, and advanced practice can be performed.

[Other Embodiments]
The present invention uses the above-described embodiment as an example of one basic technical idea, but the following modifications can be considered.
First, the embodiment shown in FIG. 7 is an embodiment in which a return hit ball b2 for relatively beginners can be obtained. That is, the upper surface guide sheet 35 is separately prepared as the second guide structure 33B, and this is stretched using the guide sheet stay 27 so as to cover the upper surface width direction of the sheet body 30. The front end portion is superposed so as to be in contact with the hit ball receiving sheet 3, and the tension angle is not shallower than the tension angle of the hit ball receiving sheet 3 or is adjusted to be inclined so that the front side rises. In such a case, when the player P hits the upper surface of the upper surface guide sheet 35, the player P receives the hit ball on the hit ball receiving portion 32 of the seat body 30 above the same, as in the previous basic embodiment. Although it reverse | inverts and returns by the inversion guide part 4, it returns on the upper surface guide sheet 35 at the time of return, falls to the base surface B from a higher position, and bounces. Since the return hit b2 bounces high as described above, the return hit b2 having a loose height is obtained for the player P, and the beginner player P can practice according to the skill. Even when the player hits the hit ball b1 through the lower surface of the upper surface guide sheet 35, the tip of the upper surface guide sheet 35 is not in contact with the sheet body 30 of the hit ball receiving sheet 3 and is simply superimposed. Therefore, as shown in FIG. 7, the driven hit ball b1 can pass through the gap between them, while the return hit ball b2 always returns through the upper surface of the upper surface guide sheet 35, and is gently returned hit ball. b2.

Further, the following configuration may be adopted as the overall configuration.
First, what is shown in FIG. 8 is an embodiment in which the leg portions 10 of the base 1 are directly provided at the four corners of the seat support frame 2, and the leg portion 10 on the player P side is short, and the leg portion on the reversing guide portion 4 side. 10 is a long state. Furthermore, it is preferable that each leg portion 10 includes an adjustment mechanism 101 that can select the height thereof.
As another form, the seat support frame 2 may be of a non-frame shape. For example, the one shown in FIG. 9 is provided with four bowl-shaped sheet support frames 2 radially as an example upward from a base 1 having a sufficient weight, and the four corners of the hit ball receiving sheet 3 are provided at the tip thereof. In addition to being attached so as to be supported, a tension net 201 is provided for the stable setting of the seat support frame 2. Further, a guide tension net 261 is provided below the hit ball receiving sheet 3, and the guide portion 331 is set by this.

  Furthermore, in the embodiment shown in FIG. 10, even the seat support frame 2 having a special shape is excluded, and the seat support frame 2 is configured by using a catching net device 5 for another purpose. That is, for the ball catching net device 5 having a sufficient catching area, a method may be used in which only the hit ball receiving sheet 3 is suspended in the air using the device frame 51 as a seat support frame. . That is, a plurality of support straps 53 are installed on the inner side surrounded by the net 52, and the ball receiving sheet 3 is appropriately suspended from the apparatus frame 51 to form the ball receiving sheet 3 in an oblique state. .

Further, the seat support frame 2 can be configured to be foldable in consideration of actual use convenience. In the embodiment shown in FIG. 11, the seat support frame 2 is configured to be foldable by a hinge 28 near the middle. When this is done, the thickness of the leg portion 10 becomes relatively small as the legs 10 are folded, and convenience such as movement can be achieved.
Of course, in such a case, a caster or the like is attached to one or both of the legs 10 in order to further improve the convenience of movement, so that it is possible to move the caster while rolling. By the way, in order to make this moveable compact, when a tennis coach or the like teaches a plurality of players P, several cars are transported together with vehicles etc. It is possible to take a form of training by securing a practice place in a certain place.

It is the perspective view which shows the use condition of the tennis practice apparatus of this invention, and the partially expanded view which shows the connection state of a guidance stay and a hit ball receiving sheet. It is a partial sectional enlarged view which shows the connection state of the side view same as the above and the adjustment fulcrum for frames. It is a front view same as the above, and a partially enlarged view showing various connection states between the seat support frame and the hit ball receiving sheet. It is the side view which showed the reference aspect of the return ball guiding structure, (a) is the side view which showed the Example which used the guidance stay, (b) is the Example which used the separate type | formula guide plate. It is. It is a perspective view which shows the structure of an inversion guide part. It is the perspective view and cross-sectional top view which show the structure of an inversion guide part. It is the side view which showed the path | route of a driving hit ball and a return hit ball. It is the perspective view which showed the other Example regarding a base. It is the perspective view which showed further another Example regarding a base. It is the perspective view which showed the other Example regarding a seat support frame. It is the side view which showed the other Example which enabled folding.

DESCRIPTION OF SYMBOLS 1 Base 2 Seat support frame 3 Hitting ball receiving sheet 4 Reversing guide part 5 Catch net device 10 Leg part 11 Frame support bracket 12 Leg top support point 13 Leg part brace 14 Frame fixed support point 15 Frame adjustment support point 151 Fixing bolt 101 Adjustment Mechanism 2 Seat support frame 20 Peripheral frame portion 201 Tension net 21 Inverted frame 23 Fixed connection portion 25 Adjustment connection portion 250 Connection plate 251 Long hole 252 Bracket 253 Pin 26 Guide stay 260 Adjustment hook 261 Guide tension net 27 Guide sheet stay 28 Hinge 3 Hitting ball receiving sheet 30 Seat body 301 Mounting loop 302 Eyelet 31 Strap 32 Hitting ball receiving portion 33 Return hitting ball guiding structure 33A First guiding structure 33B Second guiding structure 331 Guide portion 332 Guide plate 34A Repulsion prevention flap 34B Ball receiving curtain sheet 35 Up Guiding sheet 4 reverse guide portion 41 reverse guide trough 42 deflection guide portion 5 catching net 51 device frame 52 net 53 support straps A tennis practice device B base surface b1 implantation hitting b2 return hitting P player R racket s stretched spring

Claims (6)

A seat support frame that can be installed at an appropriate practice place;
A hitting ball receiving sheet that is supported by the seat support frame so as to be developed in an upwardly inclined state,
A reversing guide portion provided in a bowl shape curved in a side view toward the front side at the upper end of the hitting ball receiving sheet,
The hit ball hit by the player is received by the hit ball receiving sheet, and then reversed by the reversing guide part to become a return hit ball, descending along the hit ball receiving sheet and jumping out of the hit ball receiving sheet, at the base of the practice place In a device that bounces and returns to the player again, and the player hits the return ball again to continue the ball practice.
The hitting ball receiving sheet has a return hitting guide structure that allows the player to select several suitable hitting positions ,
This return hitting ball guiding structure is a first guiding structure for changing the setting of the tension surface near the lower end of the hit ball receiving sheet to the valley folded state with respect to the tension surface of the hit ball receiving portion, and hitting balls that are in the valley folded state The tennis practice device , wherein the receiving sheet is configured to be smoothly curved without being angular at a boundary portion between the upper hitting ball receiving portion and the lower guiding portion . The return hitting ball guiding structure includes an upper surface guide sheet that covers the upper surface of the hit ball receiving sheet in the width direction, and the upper surface guide sheet is set to a tension angle shallower than the tension angle of the hit ball receiving sheet, and the tip edge is a hit ball 2. The tennis practice device according to claim 1 , further comprising a second guiding structure for passing a hitting ball passing through the lower surface of the upper guide sheet while passing through the lower surface of the upper guide sheet, while the return hitting ball passes through the upper surface thereof. . The reverse guide portion, hitting receiving upper portion tennis practice apparatus according to claim 1 or 2, wherein it is configured is stretched like eaves curved in a side view of the seat. 4. The tennis practice device according to claim 1, 2, or 3 , wherein the reversing guide portion is formed of a hard material having a large coefficient of restitution. 5. The tennis practice device according to claim 3 , wherein the reversing guide portion includes a deflection guide portion that changes a return direction of the return hit ball. The deflection guide portion, Tennis practice device according to claim 5, wherein the one or in the width direction right and left are provided near the ends of both.

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