EP1728536A1 - Tennis practice apparatus - Google Patents

Tennis practice apparatus Download PDF

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Publication number
EP1728536A1
EP1728536A1 EP06010790A EP06010790A EP1728536A1 EP 1728536 A1 EP1728536 A1 EP 1728536A1 EP 06010790 A EP06010790 A EP 06010790A EP 06010790 A EP06010790 A EP 06010790A EP 1728536 A1 EP1728536 A1 EP 1728536A1
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EP
European Patent Office
Prior art keywords
tennis
pendulum
pendulum arm
training device
tennis training
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Granted
Application number
EP06010790A
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German (de)
French (fr)
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EP1728536B1 (en
Inventor
Karel Spicak
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Individual
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Individual
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/0073—Means for releasably holding a ball in position; Balls constrained to move around a fixed point, e.g. by tethering
    • A63B69/0091—Balls fixed to a movable, tiltable or flexible arm
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/38—Training appliances or apparatus for special sports for tennis

Definitions

  • the invention relates to a tennis practice device.
  • Tennis is known to have two basic strokes: the forehand and the backhand. Both can be performed so that the ball has a twist, i. a twist, gets.
  • the Ballelle is created by the impact of the tennis racket on the ball. The most important effects are Topspin (Drive, Forward Rotation) and Underspin (Slice, Backward Rotation).
  • the ball played with the topspin gets a forward spin
  • the ball played with the underspin gets a backward spin.
  • the tennis racket To give the ball a forward or backward twist, the tennis racket must be guided to the incoming ball accordingly: the topspin from bottom to top and the underspin from top to bottom.
  • the face of the tennis racket must be directed at ball touch approximately perpendicular to the ground. The effect is created by the friction between the stringing of the tennis racket and the ball, in the tennis language this is called "ball brushing".
  • the present invention has for its object to provide a simple and inexpensive tennis practice device with which the correct leadership of the tennis racket to the ball for the purpose of the desired twist distribution can be learned quickly.
  • the inventive tennis practice device allows beginners and children, in particular, to quickly learn the correct guidance of the tennis racket to the ball for the purpose of the desired spin distribution and to immediately recognize and correct any errors. It is a tool both for the tennis instructor, who can correct the execution of the blow immediately and give less explanations, as well as for the student himself, also alone and in a small room, e.g. at home, while also strengthening his muscles.
  • the inventive tennis practice device is simple and inexpensive, can be easily transported and worn, caused when practicing virtually no noise and can to a certain extent also replace a tennis wall.
  • the rotation element simulating the tennis ball may be provided with a marker visualizing the twisting direction (forward twist or reverse twist, for example). Arrows, be provided.
  • a tennis practice device 1 for learning topspin impacts comprises a stand 2 comprising a base plate 3 (it could also be a frame) and a vertical support 4 fixed to the base plate 3.
  • the base plate 2 can be used as needed, e.g. should be placed on an uneven floor, equipped with leveling feet 5.
  • a pendulum arm 7 is arranged, which is pivotally mounted about a horizontal pendulum axis 6.
  • the pendulum axis 6 can be adjusted in height, including the vertical support 4 is provided with a number of corresponding, superposed openings 8.
  • the vertical support 4 could, however, also be telescopic, for example, for the height adjustment of the pendulum axle 6.
  • a rotary member 10 is rotatably mounted about a rotation axis 11 which has a resilient or tennis ball-like surface and is intended to simulate the tennis ball. It may be, for example, a disc made of metal or plastic with a rubber or felt surface. However, it is also suitable, e.g. the use of a standard floorball ball, which is stored rotatable about an axis.
  • a stop carrier 15 is arranged transversely to the same, at its two ends depending on a stop 16, 17 for the pendulum arm 7 is present.
  • damper elements In the stop area (either directly on the stops 16, 17 or on the surface between the stop carrier 15 and the pendulum arm 7) are mounted damper elements (not shown in the drawing).
  • the pendulum arm 7 is located with advantage in the starting position on the one stop 16 and can when hitting a in Fig. 1 in three positions 20a, 20b, 20c indicated tennis racket face 20 on the rotary member 10 in the direction of rotation D 1 to one by the other Stop 17 limited swing angle are pivoted, which is shown in phantom in Fig. 1, after which he is automatically pivoted back by the action of a restoring moment generating weights 13 in the starting position.
  • weights 13, e.g. Plates can preferably not only be changed in number, but also on pendulum arm 7 in arrow directions P of Fig. 1, i. transversely to the longitudinal axis of the pendulum arm 7, can be adjusted, whereby the force required for impacts additionally increased or decreased and the speed of the return movement of the pendulum arm 7 can be controlled
  • the stop carrier 15 can preferably be adjusted in height on the vertical support 4, for which purpose the vertical support 4 is provided with a number of fastening holes 18, which are optionally arranged one above the other in pairs. As a result, the pivoting angle of the pendulum arm 7 or the pendulum motion can be changed in the desired manner.
  • the stop carrier 15 can be adjusted horizontally with advantage also at any height relative to the vertical support 4, which allows an asymmetrical pendulum movement relative to the vertical support 4. The horizontal adjustment can be accomplished via a number of existing in the stop carrier 15 holes 19.
  • stops 16, 17 could be adjusted horizontally at the same height of the stop carrier 15.
  • the tennis practice device 1 now makes it possible to practice the topspin, ie the granting of the forward spin when the club is guided correctly.
  • the pendulum axis 6 is previously in accordance with the size of the exercising person in height set (via the openings 18 or the telescope).
  • the tennis racket or the tennis racket impact surface 20 must be brought after striking just before hitting the rotary member 10 in a bottom approximately perpendicular lower position 20a, in the vertical position to the bottom 20b, the rotary member 10 and stripe up into the in Fig. 1 denoted by 20c, also perpendicular to the ground position are swung out, wherein the rotary member 10 receives a forward rotation in the direction of arrow V of FIG. The correct twist distribution is immediately visible.
  • the exercise device is suitable for both right-handed and left-handed people.
  • the base plate 3 must be designed so that there is enough space (distance F of FIG. 2) for the feet of the exercising person available.
  • the vertical support 4 asymmetrically, to one side of the base plate 3 (viewed transversely to the pendulum plane) and thereby to increase the distance F, in which case the change forehand / backhand or right-handed / left-handed by displacement of the weights or plates 13 of the pendulum 7 could be adjusted so that his initial position could optionally also correspond to the position shown in dashed lines in Fig. 1 and the pivoting would take place in the twist distribution in the direction of rotation D 2 and the return pivot in the direction of rotation D 1 .
  • a stand 2 'in turn comprises a levelable base plate 3, on which in this embodiment a gallows-shaped upright part 24 is arranged, which has a two-part vertical support 24a, 24b, a horizontal bar 24c and a vertical support 24d.
  • the tennis practice device 1 'in turn has a pivotable about a pendulum axis 6 pendulum 7, wherein the pendulum axis 6 is associated with the vertical support 24d.
  • the pendulum arm 7 is in turn provided at one end with the rotary member 10 and at the other end with the weights 13.
  • the pendulum axis 6 can also be adjusted in this device in height to take into account the size of the exercising person. This is done for example by adjusting the one part 24b of the vertical support relative to the arranged on the base plate 3 other part 24a, wherein the adjustment in turn via a number of superimposed openings 8 'or continuously by telescopic training of the vertical support 24a, 24b can be done.
  • the pendulum arm 7 is under the action of its own weight in a vertical starting position, in which the rotary member 10 is located below, while the side of a fitted with a damper element stop 16 ', which has a number of superimposed mounting holes 18' on the vertical support 24d in height is adjustable.
  • the pendulum arm 7 can be pivoted upon impact of a in Fig. 3 in three positions 20a ', 20b', 20c 'indicated tennis racket face 20 on the rotary member 10 in the direction of rotation D 1 by a pivot angle, until it stops at 16' of the other Side comes to concern, which is shown in phantom in Fig. 1, after which he is automatically, by the action of a restoring moment generating weights 13, pivoted back into the starting position.
  • the stopper 16 ' By the height adjustment of the stopper 16 ', the desired pendulum motion or the desired pivot angle can be adjusted. It would be possible, with another, on the other side of the pendulum arm 7 as a stop 16 'lying stop (not shown) when swinging back to prevent the overshoot of the pendulum arm 7, but this is not absolutely necessary.
  • the tennis racket or the face 20 of the tennis racket must be brought to the rotation element 10 in a nearly vertical (or in a up to 20 ° deviates from the vertical position) upper position 20a 'after Ausholen just before the Aüftown are, at the same angle standing (Pos. 20b '), the rotary member 10 strip and thereby give the rotation member 10 is a reverse rotation in the direction of arrow R of FIG. 3, and then from a lower position 20c' are swung upwards.
  • the positions of the face 20 shown in Figs. 3 and 4 correspond to the backhand of a right-hander.
  • the stopper 16 ' can be inserted into a row of superimposed mounting holes 18' lying on the other side of the pendulum arm 7, the pendulum arm 7 then hitting the striking face 20 in the direction of rotation D 2 is pivoted and then pivots back in the direction of rotation D 1 .
  • the beam 24c of the gallows-shaped stand 24 must be dimensioned so that there is sufficient space for the tennis racket.
  • the two tennis training devices 1, 1 'described above may well be combined in a modifiable device, e.g. If the vertical support 4 of the device of FIG. 1 and 2 at the same time the lower part 24a of the two-part vertical support of the device of FIG. 3 and 4 would form, so that the device could be easily converted from practicing Topspin for practicing Underspin.
  • a forehand device and a backhand device could be placed next to each other to practice both strokes and a correct grip change.
  • FIG. 5 A particularly advantageous solution is shown in FIG. 5.
  • two rotary elements 10 are provided at the free end of the pendulum arm 7, which are held by a spacer 30 on both sides of the pendulum arm 7 and the pendulum plane, in such a distance in that the tennis racket can be swung down past the pendulum arm 7 or the stand 7 at a sufficient distance d, ie, that the apparatus is suitable for learning both topspin and underspin and for forehand and backhand, regardless of whether you are right-handed or left-leaning.
  • the weights 13 and their arrangement on the pendulum 7 also determine the necessary effort in the beating. But it would also be possible to use a spring (eg a torsion spring) for this purpose.
  • the tilting of the pendulum arm 7 could also be defined by stops by means of a rope on the one hand on the stand 2 (or on the vertical support 4) and on the other hand attached to the pendulum arm 7 cables.
  • the swivel angle could for example be adjusted by means of a cable clamp by changing the length of the cable connection as needed.
  • the pendulum stroke could be adjusted asymmetrically with respect to the vertical support 4, for example by adjusting corresponding cable contact bolts.
  • One of both cable fixings can be cushioned and / or dampened, e.g. through a foam element.
  • a direction of twisting forward spin V and reverse twist R
  • the inventive tennis practice device allows beginners and children, in particular, to quickly learn the correct guidance of the tennis racket to the ball for the purpose of the desired spin distribution and to immediately recognize and correct any errors. It is a tool both for the tennis instructor, who can correct the execution of the blow immediately and give less explanations, as well as for the student himself, also alone and in a small room, e.g. at home, while strengthening his muscles.
  • the inventive tennis practice device is simple and inexpensive, can be easily transported and worn, caused when practicing virtually no noise and can to a certain extent also replace a tennis wall.
  • inventive tennis practice device is intended for individuals.
  • two persons could "play" with the device 1 according to FIGS. 1 and 2 topspin and with the device 1 "according to FIG. 5 topspin or underspin.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Tools (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Toys (AREA)

Abstract

The tennis trainer has a pendulum arm(7) mounted on a stand (2) to pivot about a pendulum axis (6) and provided at the free end with a rotational element (10) simulating a tennis ball with a spring-elastic or tennis ball like surface to be set in rotation when hit by a racket (20). When the racket hits the ball the arm pivots out from a starting position into a rotational direction and then automatically returns to the starting position. The pendulum axis can be adjusted in height. The pendulum pivots out up to a stop (17) which can be vertically and or horizontally adjusted.

Description

Die Erfindung betrifft ein Tennisübungsgerät.The invention relates to a tennis practice device.

Beim Tennisspiel gibt es bekanntlich zwei Grundschläge: die Vorhand und die Rückhand. Beide können so ausgeführt werden, dass der Ball einen Effet, d.h. einen Drall, bekommt. Der Balleffet entsteht durch die Einwirkung der Schlagfläche des Tennisschlägers auf den Ball. Die wichtigsten Effets sind Topspin (Drive, Vorwärtsrotation) und Underspin (Slice, Rückwärtsrotation). Der mit dem Topspin abgespielte Ball bekommt einen Vorwärtsdrall, der mit dem Underspin abgespielte Ball einen Rückwärtsdrall. Um dem Ball einen Vorwärts- oder einen Rückwärtsdrall zu erteilen, muss der Tennisschläger zum ankommenden Ball entsprechend geführt werden: beim Topspin von unten nach oben und beim Underspin von oben nach unten. Dabei muss die Schlagfläche des Tennisschlägers bei Ballberührung annähernd senkrecht zum Boden gerichtet sein. Der Effet wird durch die Reibung zwischen der Bespannung des Tennisschlägers und dem Ball erzeugt, in der Tennissprache nennt man dies "Ballbürsten".Tennis is known to have two basic strokes: the forehand and the backhand. Both can be performed so that the ball has a twist, i. a twist, gets. The Balleffet is created by the impact of the tennis racket on the ball. The most important effects are Topspin (Drive, Forward Rotation) and Underspin (Slice, Backward Rotation). The ball played with the topspin gets a forward spin, the ball played with the underspin gets a backward spin. To give the ball a forward or backward twist, the tennis racket must be guided to the incoming ball accordingly: the topspin from bottom to top and the underspin from top to bottom. The face of the tennis racket must be directed at ball touch approximately perpendicular to the ground. The effect is created by the friction between the stringing of the tennis racket and the ball, in the tennis language this is called "ball brushing".

Die Anfänger, besonders die Kinder, haben meistens grosse Schwierigkeiten mit entsprechender Führung des Tennisschlägers zum Ball nach der Ausholbewegung und vor allem mit der richtigen Stellung der Schlagfläche bei der Ballberührung, da sie sich auf den ankommenden Ball konzentrieren müssen, um ihn überhaupt zu treffen. Da bietet auch eine Ballwurfmaschine als ein seit langem bekanntes Tennisübungsgerät wenig Abhilfe.The beginners, especially the children, usually have great difficulty with appropriate leadership of the tennis racket to the ball after the Ausholbewegung and especially with the correct position of the face when touching the ball, as they must focus on the incoming ball to meet him at all. Since also offers a ball machine as a long-known tennis practice device little remedy.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein einfaches und kostengünstiges Tennisübungsgerät zu schaffen, mit dem die richtige Führung des Tennisschlägers zum Ball zwecks gewünschter Drallerteilung schnell erlernt werden kann.The present invention has for its object to provide a simple and inexpensive tennis practice device with which the correct leadership of the tennis racket to the ball for the purpose of the desired twist distribution can be learned quickly.

Diese Aufgabe wird erfindungsgemäss durch ein Tennisübungsgerät mit den Merkmalen des Anspruches 1 gelöst.This object is achieved according to the invention by a tennis practice device having the features of claim 1.

Weitere bevorzugte Ausgestaltungen des erfindungsgemässen Tennisübungsgerätes bilden den Gegenstand der abhängigen Ansprüche.Further preferred embodiments of the inventive tennis practice device form the subject of the dependent claims.

Das erfindungsgemässe Tennisübungsgerät erlaubt insbesondere den Anfängern und Kindern, die richtige Führung des Tennisschlägers zum Ball zwecks gewünschter Drallerteilung schnell zu erlernen und allfällige Fehler sofort zu erkennen und zu korrigieren. Es ist ein Hilfsmittel sowohl für den Tennislehrer, der die Ausführung des Schlages sofort korrigieren kann und weniger Erklärungen abzugeben braucht, als auch für den Schüler selber, der auch alleine und auch in einem kleinen Raum, z.B. zu Hause, üben und dabei auch seine Muskulatur stärken kann. Das erfindungsgemässe Tennisübungsgerät ist einfach und kostengünstig, kann leicht transportiert und getragen werden, verursacht beim Üben praktisch keinen Lärm und kann gewissermassen auch eine Tenniswand ersetzen.The inventive tennis practice device allows beginners and children, in particular, to quickly learn the correct guidance of the tennis racket to the ball for the purpose of the desired spin distribution and to immediately recognize and correct any errors. It is a tool both for the tennis instructor, who can correct the execution of the blow immediately and give less explanations, as well as for the student himself, also alone and in a small room, e.g. at home, while also strengthening his muscles. The inventive tennis practice device is simple and inexpensive, can be easily transported and worn, caused when practicing virtually no noise and can to a certain extent also replace a tennis wall.

In einer besonders bevorzugten Weise kann das den Tennisball simulierende Rotationselement mit einer die Drallrichtung (Vorwärtsdrall bzw. Rückwärtssdrall) visualisierenden Markierung, z.B. Pfeilen, versehen sein.In a particularly preferred manner, the rotation element simulating the tennis ball may be provided with a marker visualizing the twisting direction (forward twist or reverse twist, for example). Arrows, be provided.

Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert.The invention will be explained in more detail below with reference to the drawing.

Es zeigen rein schematisch:

Fig. 1
ein erstes Ausführungsbeispiel eines erfindungsgemässen Tennisübungsgerätes zum Erlernen von Topspin in Seitenansicht;
Fig. 2
das Tennisübungsgerät in Frontansicht, in Pfeilrichtung A nach Fig. 1;
Fig. 3
ein zweites Ausführungsbeispiel eines erfindungsgemässen Tennisübungsgerätes zum Erlernen von Underspin in Seitenansicht;
Fig. 4
das Tennisübungsgerät nach Fig. 3 in Frontansicht, in Pfeilrichtung A nach Fig. 3; und
Fig. 5
ein drittes Ausführungsbeispiel eines erfindungsgemässen Tennisübungsgerätes in einer der Fig. 2 entsprechenden Darstellung (Frontansicht).
It shows purely schematically:
Fig. 1
a first embodiment of an inventive tennis practice device for learning Topspin in side view;
Fig. 2
the Tennisübungsgerät in front view, in the direction of arrow A of Fig. 1;
Fig. 3
a second embodiment of an inventive tennis practice device for learning Underspin in side view;
Fig. 4
the tennis practice apparatus of Figure 3 in front view, in the direction of arrow A of Fig. 3. and
Fig. 5
A third embodiment of an inventive tennis practice device in one of the Fig. 2 corresponding representation (front view).

Gemäss Fig. 1 und 2 weist ein Tennisübungsgerät 1 zum Erlernen von Topspin-Schlägen einen Ständer 2 auf, der eine Grundplatte 3 (es könnte auch ein Rahmen sein) sowie eine auf der Grundplatte 3 befestigte Vertikalstütze 4 umfasst. Die Grundplatte 2 kann bei Bedarf, wenn sie z.B. auf einem unebenen Boden aufgestellt werden sollte, mit Nivellierfüssen 5 ausgestattet sein. An der Vertikalstütze 4 ist ein Pendelarm 7 angeordnet, der um eine horizontale Pendelachse 6 schwenkbar gelagert ist. Die Pendelachse 6 kann in ihrer Höhe verstellt werden, wozu die Vertikalstütze 4 mit einer Anzahl von entsprechenden, übereinander angeordneten Öffnungen 8 versehen ist. Die Vertikalstütze 4 könnte für die Höheneinstellung der Pendelachse 6 allerdings auch beispielsweise teleskopisch ausgebildet sein.According to FIGS. 1 and 2, a tennis practice device 1 for learning topspin impacts comprises a stand 2 comprising a base plate 3 (it could also be a frame) and a vertical support 4 fixed to the base plate 3. The base plate 2 can be used as needed, e.g. should be placed on an uneven floor, equipped with leveling feet 5. On the vertical support 4 a pendulum arm 7 is arranged, which is pivotally mounted about a horizontal pendulum axis 6. The pendulum axis 6 can be adjusted in height, including the vertical support 4 is provided with a number of corresponding, superposed openings 8. The vertical support 4 could, however, also be telescopic, for example, for the height adjustment of the pendulum axle 6.

An einem freien Ende des Pendelarmes 7 ist ein Rotationselement 10 um eine Drehachse 11 drehbar gelagert, das eine federelastische oder tennisballähnliche Oberfläche aufweist und den Tennisball simulieren soll. Es kann sich dabei beispielsweise um eine Scheibe aus Metall oder Kunststoff mit einer Gummi- oder Filzoberfläche handeln. Geeignet ist aber auch z.B. die Verwendung eines handelsüblichen Unihockey-Balls, den man um eine Achse drehbar lagert.At a free end of the pendulum arm 7, a rotary member 10 is rotatably mounted about a rotation axis 11 which has a resilient or tennis ball-like surface and is intended to simulate the tennis ball. It may be, for example, a disc made of metal or plastic with a rubber or felt surface. However, it is also suitable, e.g. the use of a standard floorball ball, which is stored rotatable about an axis.

Am anderen Ende des Pendelarmes 7, das zur anderen Seite der Pendelachse 6 liegt als das mit dem Rotationselement 10 versehenes Ende, ist vorzugsweise mindestens ein Gewicht 13 (mit Vorteil sind es mehrere Gewichte 13, z.B. ein Satz von Platten), angebracht.At the other end of the pendulum arm 7, which is on the other side of the pendulum axis 6 than the end provided with the rotation element 10, is preferably at least one weight 13 (advantageously there are a plurality of weights 13, for example a set of plates).

An der Vertikalstütze 4 ist ein Anschlagträger 15 quer zu derselben angeordnet, an dessen beiden Enden je ein Anschlag 16, 17 für den Pendelarm 7 vorhanden ist. Im Anschlagbereich (entweder direkt an den Anschlägen 16, 17 oder an der Fläche zwischen dem Anschlagträger 15 und dem Pendelarm 7) sind Dämpferelemente angebracht (in der Zeichnung nicht dargestellt). Der Pendelarm 7 liegt mit Vorteil in der Ausgangsstellung an dem einen Anschlag 16 an und kann beim Auftreffen einer in Fig. 1 in drei Positionen 20a, 20b, 20c angedeuteten Tennisschläger-Schlagfläche 20 auf das Rotationselement 10 in Drehrichtung D1 um einen durch den anderen Anschlag 17 begrenzten Schwenkwinkel verschwenkt werden, was in Fig. 1 gestrichelt dargestellt ist, wonach er selbsttätig, durch Einwirkung der ein Rückstellmoment erzeugender Gewichte 13, in die Ausgangsstellung zurückgeschwenkt wird.On the vertical support 4, a stop carrier 15 is arranged transversely to the same, at its two ends depending on a stop 16, 17 for the pendulum arm 7 is present. In the stop area (either directly on the stops 16, 17 or on the surface between the stop carrier 15 and the pendulum arm 7) are mounted damper elements (not shown in the drawing). The pendulum arm 7 is located with advantage in the starting position on the one stop 16 and can when hitting a in Fig. 1 in three positions 20a, 20b, 20c indicated tennis racket face 20 on the rotary member 10 in the direction of rotation D 1 to one by the other Stop 17 limited swing angle are pivoted, which is shown in phantom in Fig. 1, after which he is automatically pivoted back by the action of a restoring moment generating weights 13 in the starting position.

Die bereits erwähnten Gewichte 13, z.B. Platten, können vorzugsweise nicht nur in ihrer Anzahl verändert, sondern auch am Pendelarm 7 in Pfeilrichtungen P nach Fig. 1, d.h. quer zur Längsachse des Pendelarms 7, verstellt werden, wodurch der Kraftaufwand bei Schlägen zusätzlich vergrössert oder verkleinert und die Geschwindigkeit der Rückstellbewegung des Pendelarms 7 gesteuert werden kannThe already mentioned weights 13, e.g. Plates can preferably not only be changed in number, but also on pendulum arm 7 in arrow directions P of Fig. 1, i. transversely to the longitudinal axis of the pendulum arm 7, can be adjusted, whereby the force required for impacts additionally increased or decreased and the speed of the return movement of the pendulum arm 7 can be controlled

Der Anschlagträger 15 kann vorzugsweise an der Vertikalstütze 4 in der Höhe verstellt werden, wozu die Vertikalstütze 4 mit einer Anzahl von gegebenenfalls paarweise übereinander angeordneten Befestigungslöchern 18 versehen ist. Dadurch kann der Schwenkwinkel des Pendelarms 7 bzw. die Pendelbewegung in gewünschter Weise verändert werden. Der Anschlagträger 15 kann aber mit Vorteil auch in jeder Höhe gegenüber der Vertikalstütze 4 horizontal verstellt werden, was eine asymmetrische Pendelbewegung gegenüber der Vertikalstütze 4 ermöglicht. Die Horizontalverstellung kann über eine Anzahl von im Anschlagträger 15 vorhandenen Löchern 19 bewerkstelligt werden.The stop carrier 15 can preferably be adjusted in height on the vertical support 4, for which purpose the vertical support 4 is provided with a number of fastening holes 18, which are optionally arranged one above the other in pairs. As a result, the pivoting angle of the pendulum arm 7 or the pendulum motion can be changed in the desired manner. However, the stop carrier 15 can be adjusted horizontally with advantage also at any height relative to the vertical support 4, which allows an asymmetrical pendulum movement relative to the vertical support 4. The horizontal adjustment can be accomplished via a number of existing in the stop carrier 15 holes 19.

Statt einer Vertikalverstellung des Anschlagträgers 15 an der Vertikalstütze 4 könnten bei gleichbleibender Höhe des Anschlagträgers 15 nur die Anschläge 16, 17 an diesem horizontal verstellt werden.Instead of a vertical adjustment of the stop carrier 15 on the vertical support 4, only the stops 16, 17 could be adjusted horizontally at the same height of the stop carrier 15.

Das erfindungsgemässe Tennisübungsgerät 1 ermöglicht nun, den Topspin, d.h. die Erteilung des Vorwärtsdralls bei richtiger Schlägerführung zu üben. Die Pendelachse 6 wird zuvor entsprechend der Grösse der trainierenden Person in ihrer Höhe eingestellt (über die Öffnungen 18 oder den Teleskop). Der Tennisschläger bzw. die Tennisschläger-Schlagfläche 20 muss nach dem Ausholen kurz vor dem Auftreffen auf das Rotationselement 10 in eine zum Boden annähernd senkrechte untere Stellung 20a gebracht werden, in der zum Boden senkrechten Stellung 20b das Rotationselement 10 streifen und nach oben in die in Fig. 1 mit 20c bezeichnete, ebenfalls zum Boden senkrechte Stellung ausgeschwungen werden, wobei das Rotationselement 10 eine Vorwärtsrotation in Pfeilrichtung V nach Fig. 1 erhält. Dabei ist die richtige Drallerteilung sofort sichtbar. Geübt kann sowohl die Vorhand (vgl. Fig. 2) als auch die Rückhand, und das Übungsgerät ist sowohl für Rechts- als auch für Linkshänder geeignet. Allerdings muss die Grundplatte 3 so konzipiert sein, dass es genug Platz (Distanz F nach Fig. 2) für die Füsse der trainierenden Person zur Verfügung steht. Es wäre auch möglich, die Vertikalstütze 4 asymmetrisch, zu einer Seite der Grundplatte 3 (quer zur Pendelebene gesehen) anzuordnen und dadurch die Distanz F zu vergrössern, wobei dann für den Wechsel Vorhand/Rückhand oder Rechshänder/Linkshänder durch Verschiebung der Gewichte bzw. Platten 13 der Pendelarm 7 so verstellt werden könnte, dass seine Ausgangslage wahlweise auch der in Fig. 1 gestrichelt dargestellten Stellung entsprechen könnte und die Ausschwenkung bei der Drallerteilung in Drehrichtung D2 und die Rückschwenkung in Drehrichtung D1 stattfinden würde.The tennis practice device 1 according to the invention now makes it possible to practice the topspin, ie the granting of the forward spin when the club is guided correctly. The pendulum axis 6 is previously in accordance with the size of the exercising person in height set (via the openings 18 or the telescope). The tennis racket or the tennis racket impact surface 20 must be brought after striking just before hitting the rotary member 10 in a bottom approximately perpendicular lower position 20a, in the vertical position to the bottom 20b, the rotary member 10 and stripe up into the in Fig. 1 denoted by 20c, also perpendicular to the ground position are swung out, wherein the rotary member 10 receives a forward rotation in the direction of arrow V of FIG. The correct twist distribution is immediately visible. Both the forehand (see Fig. 2) and the backhand can be practiced, and the exercise device is suitable for both right-handed and left-handed people. However, the base plate 3 must be designed so that there is enough space (distance F of FIG. 2) for the feet of the exercising person available. It would also be possible to arrange the vertical support 4 asymmetrically, to one side of the base plate 3 (viewed transversely to the pendulum plane) and thereby to increase the distance F, in which case the change forehand / backhand or right-handed / left-handed by displacement of the weights or plates 13 of the pendulum 7 could be adjusted so that his initial position could optionally also correspond to the position shown in dashed lines in Fig. 1 and the pivoting would take place in the twist distribution in the direction of rotation D 2 and the return pivot in the direction of rotation D 1 .

In Fig. 3 und 4 ist ein Tennisübungsgerät 1' zum Erlernen von Underspin-Schlägen dargestellt. Die wesentlichen, im Vergleich zum Tennisübungsgerät 1 nach Fig. 1 und 2 gleichbleibenden Teile sind weiterhin mit den gleichen Bezugsziffern bezeichnet. Ein Ständer 2' umfasst wiederum eine nivellierbare Grundplatte 3, auf welcher bei dieser Ausführung ein galgenförmiger Ständerteil 24 angeordnet ist, der eine zweiteilige Vertikalstütze 24a, 24b, einen horizontalen Balken 24c und einen vertikalen Träger 24d aufweist. Das Tennisübungsgerät 1' weist wiederum einen um eine Pendelachse 6 verschwenkbaren Pendelarm 7 auf, wobei die Pendelachse 6 dem vertikalen Träger 24d zugeordnet ist. Der Pendelarm 7 ist wiederum an einem Ende mit dem Rotationselement 10 und am anderen Ende mit den Gewichten 13 versehen.In Fig. 3 and 4, a tennis practice device 1 'is shown for learning Underspin blows. The essential, compared to the tennis practice device 1 according to FIGS. 1 and 2 consistent parts are further denoted by the same reference numerals. A stand 2 'in turn comprises a levelable base plate 3, on which in this embodiment a gallows-shaped upright part 24 is arranged, which has a two-part vertical support 24a, 24b, a horizontal bar 24c and a vertical support 24d. The tennis practice device 1 'in turn has a pivotable about a pendulum axis 6 pendulum 7, wherein the pendulum axis 6 is associated with the vertical support 24d. The pendulum arm 7 is in turn provided at one end with the rotary member 10 and at the other end with the weights 13.

Die Pendelachse 6 kann auch bei diesem Gerät in ihrer Höhe eingestellt werden, um der Grösse der trainierenden Person Rechnung zu tragen. Dies geschieht beispielsweise durch Verstellung des einen Teiles 24b der Vertikalstütze gegenüber dem auf der Grundplatte 3 angeordneten anderen Teil 24a, wobei die Verstellung wiederum über eine Anzahl von übereinander angeordneten Öffnungen 8' oder stufenlos durch teleskopische Ausbildung der Vertikalstütze 24a, 24b erfolgen kann.The pendulum axis 6 can also be adjusted in this device in height to take into account the size of the exercising person. This is done for example by adjusting the one part 24b of the vertical support relative to the arranged on the base plate 3 other part 24a, wherein the adjustment in turn via a number of superimposed openings 8 'or continuously by telescopic training of the vertical support 24a, 24b can be done.

Der Pendelarm 7 steht unter Einwirkung von Eigengewicht in einer vertikalen Ausgangsstellung, in der sich das Rotationselement 10 unten befindet, und liegt dabei seitlich an einem mit einem Dämpferelement ausgestatteten Anschlag 16' an, der über eine Anzahl von übereinander liegenden Befestigungslöchern 18' am vertikalen Träger 24d in der Höhe verstellbar ist.The pendulum arm 7 is under the action of its own weight in a vertical starting position, in which the rotary member 10 is located below, while the side of a fitted with a damper element stop 16 ', which has a number of superimposed mounting holes 18' on the vertical support 24d in height is adjustable.

Der Pendelarm 7 kann beim Auftreffen einer in Fig. 3 in drei Positionen 20a', 20b', 20c' angedeuteten Tennisschläger-Schlagfläche 20 auf das Rotationselement 10 in Drehrichtung D1 um einen Schwenkwinkel verschwenkt werden, bis er am Anschlag 16' von der anderen Seite her zum Anliegen kommt, was in Fig. 1 gestrichelt dargestellt ist, wonach er selbsttätig, durch Einwirkung der ein Rückstellmoment erzeugender Gewichte 13, in die Ausgangsstellung zurückgeschwenkt wird. Durch die Höhenverstellung des Anschlags 16' kann die gewünschte Pendelbewegung bzw. der gewünschte Schwenkwinkel eingestellt werden. Es wäre möglich, mit einem weiteren, zu der anderen Seite des Pendelarms 7 als Anschlag 16' liegenden Anschlag (nicht dargestellt) beim Zurückschwenken das Überschwingen des Pendelarms 7 zu verhindern, was jedoch nicht zwingend notwendig ist.The pendulum arm 7 can be pivoted upon impact of a in Fig. 3 in three positions 20a ', 20b', 20c 'indicated tennis racket face 20 on the rotary member 10 in the direction of rotation D 1 by a pivot angle, until it stops at 16' of the other Side comes to concern, which is shown in phantom in Fig. 1, after which he is automatically, by the action of a restoring moment generating weights 13, pivoted back into the starting position. By the height adjustment of the stopper 16 ', the desired pendulum motion or the desired pivot angle can be adjusted. It would be possible, with another, on the other side of the pendulum arm 7 as a stop 16 'lying stop (not shown) when swinging back to prevent the overshoot of the pendulum arm 7, but this is not absolutely necessary.

Zum Erzeugen eines Underspins muss der Tennisschläger bzw. die Schlagfläche 20 des Tennisschlägers nach dem Ausholen kurz vor dem Aüftreffen auf das Rotationselement 10 in eine zum Boden annähernd senkrechte (oder in eine bis zu 20° von der senkrechten Stellung abweichende) obere Stellung 20a' gebracht werden, unter gleichem Winkel stehend (Pos. 20b') das Rotationselement 10 streifen und dabei dem Rotationselement 10 eine Rückwärtsrotation in Pfeilrichtung R nach Fig. 3 erteilen, und anschliessend aus einer unteren Stellung 20c' nach oben ausgeschwungen werden.To generate an underspin, the tennis racket or the face 20 of the tennis racket must be brought to the rotation element 10 in a nearly vertical (or in a up to 20 ° deviates from the vertical position) upper position 20a 'after Ausholen just before the Aüftreffen are, at the same angle standing (Pos. 20b '), the rotary member 10 strip and thereby give the rotation member 10 is a reverse rotation in the direction of arrow R of FIG. 3, and then from a lower position 20c' are swung upwards.

Die in Fig. 3 und 4 dargestellten Stellungen der Schlagfläche 20 entsprechen dem Rückhandschlag eines Rechtshänders. Um die Vorhand zu üben (oder für die Rückhand eines Linkshänders), kann der Anschlag 16' in eine zur anderen Seite des Pendelarms 7 liegende Reihe von übereinander angeordneten Befestigungslöchern 18' gesteckt werden, wobei dann der Pendelarm 7 beim Auftreffen der Schlagfläche 20 in Drehrichtung D2 verschwenkt wird und danach in Drehrichtung D1 zurück schwenkt.The positions of the face 20 shown in Figs. 3 and 4 correspond to the backhand of a right-hander. To practice the forehand (or for the backhand of a left-handed person), the stopper 16 'can be inserted into a row of superimposed mounting holes 18' lying on the other side of the pendulum arm 7, the pendulum arm 7 then hitting the striking face 20 in the direction of rotation D 2 is pivoted and then pivots back in the direction of rotation D 1 .

Der Balken 24c des galgenförmigen Ständers 24 muss so dimensioniert werden, dass für den Tennisschläger ausreichend Platz zur Verfügung steht.The beam 24c of the gallows-shaped stand 24 must be dimensioned so that there is sufficient space for the tennis racket.

Die beiden vorstehend beschriebenen Tennisübungsgeräte 1, 1' können durchaus in einem modifizierbaren Gerät vereinigt werden, z.B. wenn die Vertikalstütze 4 des Gerätes nach Fig. 1 und 2 gleichzeitig den unteren Teil 24a der zweiteiligen Vertikalstütze des Gerätes nach Fig. 3 und 4 bilden würde, so dass das Gerät leicht vom Üben von Topspin zum Üben von Underspin umgebaut werden könnte.The two tennis training devices 1, 1 'described above may well be combined in a modifiable device, e.g. If the vertical support 4 of the device of FIG. 1 and 2 at the same time the lower part 24a of the two-part vertical support of the device of FIG. 3 and 4 would form, so that the device could be easily converted from practicing Topspin for practicing Underspin.

Es könnten allerdings auch ein Vorhandgerät und ein Rückhandgerät (Topspin-und/oder Underspingerät) nebeneinander aufgestellt werden, um beide Schläge und einen korrekten Griffwechsel zu üben.However, a forehand device and a backhand device (topspin and / or underbody device) could be placed next to each other to practice both strokes and a correct grip change.

Eine besonders vorteilhafte Lösung zeigt Fig. 5. Bei diesem Tennisübungsgerät 1" sind am freien Ende des Pendelarms 7 zwei Rotationselemente 10 vorgesehen, die von einem Distanzträger 30 zu beiden Seiten des Pendelarmes 7 bzw. der Pendelebene gehalten werden, und zwar in einer derartigen Distanz, dass der Tennisschläger mit einem ausreichenden Abstand d zum Pendelarm 7 bzw. zum Ständer 7 an diesen vorbei auch nach unten durchgeschwenkt werden kann. Das heisst, dass das Gerät zum Erlernen sowohl von Topspin als auch von Underspin und für Vorhand und Rückhand geeignet ist - unabhängig davon, ob man Rechts-oder Linkshänder ist.A particularly advantageous solution is shown in FIG. 5. In this tennis practice device 1 ", two rotary elements 10 are provided at the free end of the pendulum arm 7, which are held by a spacer 30 on both sides of the pendulum arm 7 and the pendulum plane, in such a distance in that the tennis racket can be swung down past the pendulum arm 7 or the stand 7 at a sufficient distance d, ie, that the apparatus is suitable for learning both topspin and underspin and for forehand and backhand, regardless of whether you are right-handed or left-leaning.

Bei den in der Zeichnung dargestellten Ausführungen des erfindungsgemässen Tennisübungsgerätes wird jeweils der Pendelarm 7 durch das von den Gewichten 13 erzeugte Rückstellmoment in seine Ausgangslage zurückgeschwenkt. Die Gewichte 13 und ihre Anordnung am Pendelarm 7 bestimmen auch den notwendigen Kraftaufwand bei den Schlägen. Es wäre aber auch möglich, dafür eine Feder (z.B. eine Torsionsfeder) zu verwenden.In the embodiments of the inventive tennis practice device shown in the drawing each of the pendulum arm 7 by the weight of the 13th generated restoring moment swung back to its original position. The weights 13 and their arrangement on the pendulum 7 also determine the necessary effort in the beating. But it would also be possible to use a spring (eg a torsion spring) for this purpose.

Der Kippbereich des Pendelarmes 7 könnte auch statt durch Anschläge mittels eines einerseits am Ständer 2 (bzw. an der Vertikalstütze 4) und anderseits am Pendelarm 7 befestigten Seiles definiert werden. Der Schwenkwinkel könnte beispielsweise mit Hilfe einer Seilklemme durch Längenveränderung der Seilverbindung nach Bedarf eingestellt werden. Auch bei dieser Ausführung könnte der Pendelhub gegenüber der Vertikalstütze 4 asymmetrisch eingestellt werden, beispielsweise durch Verstellen entsprechender Seil-Kontaktbolzen. Eine von beiden Seilbefestigungen kann abgefedert und/oder gedämft werden, z.B. durch ein Schaumstoffelement.The tilting of the pendulum arm 7 could also be defined by stops by means of a rope on the one hand on the stand 2 (or on the vertical support 4) and on the other hand attached to the pendulum arm 7 cables. The swivel angle could for example be adjusted by means of a cable clamp by changing the length of the cable connection as needed. In this embodiment too, the pendulum stroke could be adjusted asymmetrically with respect to the vertical support 4, for example by adjusting corresponding cable contact bolts. One of both cable fixings can be cushioned and / or dampened, e.g. through a foam element.

In einer besonders bevorzugten Weise kann das den Tennisball simulierende Rotationselement 10 mit einer die Drallrichtung (Vorwärtsdrall V bzw. Rückwärtssdrall R) visualisierenden Markierung, z.B. Pfeilen, versehen sein.In a particularly preferred manner, the tennis ball simulating rotating member 10 with a direction of twisting (forward spin V and reverse twist R) visualizing mark, e.g. Arrows, be provided.

Das erfindungsgemässe Tennisübungsgerät erlaubt insbesondere den Anfängern und Kindern, die richtige Führung des Tennisschlägers zum Ball zwecks gewünschter Drallerteilung schnell zu erlernen und allfällige Fehler sofort zu erkennen und zu korrigieren. Es ist ein Hilfsmittel sowohl für den Tennislehrer, der die Ausführung des Schlages sofort korrigieren kann und weniger Erklärungen abzugeben braucht, als auch für den Schüler selber, der auch alleine und auch in einem kleinen Raum, z.B. zu Hause, üben und dabei seine Muskulatur stärken kann. Das erfindungsgemässe Tennisübungsgerät ist einfach und kostengünstig, kann leicht transportiert und getragen werden, verursacht beim Üben praktisch keinen Lärm und kann gewissermassen auch eine Tenniswand ersetzen.The inventive tennis practice device allows beginners and children, in particular, to quickly learn the correct guidance of the tennis racket to the ball for the purpose of the desired spin distribution and to immediately recognize and correct any errors. It is a tool both for the tennis instructor, who can correct the execution of the blow immediately and give less explanations, as well as for the student himself, also alone and in a small room, e.g. at home, while strengthening his muscles. The inventive tennis practice device is simple and inexpensive, can be easily transported and worn, caused when practicing virtually no noise and can to a certain extent also replace a tennis wall.

Eigentlich ist das erfindungsgemässe Tennisübungsgerät für Einzelpersonen gedacht. Es könnten allerdings auch zwei Personen (allenfalls ohne Rückstellmoment-Gewichte) mit dem Gerät 1 nach Fig. 1 und 2 Topspin und mit dem Gerät 1" nach Fig. 5 Topspin oder Underspin miteinander "spielen".Actually, the inventive tennis practice device is intended for individuals. However, two persons (possibly without restoring moment weights) could "play" with the device 1 according to FIGS. 1 and 2 topspin and with the device 1 "according to FIG. 5 topspin or underspin.

Claims (13)

Tennisübungsgerät, gekennzeichnet durch einen auf einem Ständer (2; 2') um eine Pendelachse (6) schwenkbar gelagerten Pendelarm (7), der an einem freien Ende mit einem einen Tennisball simulierenden, drehbar gelagerten, federelastische oder tennisballähnliche Oberfläche aufweisenden und beim Auftreffen einer Tennisschläger-Schlagfläche (20) in Rotation zu versetzenden Rotationselement (10) versehen ist, und der beim Auftreffen der Tennisschläger-Schlagfläche (20) auf das Rotationselement (10) aus einer Ausgangsstellung in einer Drehrichtung ausschwenkbar und selbsttätig in die Ausgangsstellung zurückschwenkbar ist.Tennis training device, characterized by a on a stand (2, 2 ') about a pendulum axis (6) pivotally mounted pendulum arm (7) having at a free end with a tennis ball simulating, rotatably mounted, resilient or tennis ball-like surface and having an impact Tennis racket striking surface (20) is provided in rotation to be offset rotation element (10), and which upon impact of the tennis racket impact surface (20) on the rotary member (10) from a starting position in a rotational direction swinging and automatically zurückschwenkbar in the starting position. Tennisübungsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Pendelarm (7) bis zu einem Anschlag (17; 16') ausschwenkbar ist.Tennis practice device according to claim 1, characterized in that the pendulum arm (7) can be swung out as far as a stop (17; 16 '). Tennisübungsgerät nach Anspruch 2, dadurch gekennzeichnet, dass der Anschlag (17; 16') am Ständer (2; 2') zwecks Einstellung des Pendelarm-Schwenkwinkels vertikal und/oder horizontal verstellbar angeordnet ist.Tennis practice apparatus according to claim 2, characterized in that the stop (17; 16 ') on the upright (2; 2') is arranged vertically and / or horizontally adjustable for the purpose of setting the pendulum arm pivoting angle. Tennisübungsgerät nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Pendelarm (7) in seiner Ausgangsstellung an einem weiteren Anschlag (16) oder am gleichen Anschlag (16') von einer anderen Seite anliegt.Tennis training device according to claim 2 or 3, characterized in that the pendulum arm (7) rests in its initial position on a further stop (16) or on the same stop (16 ') from another side. Tennisübungsgerät nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der jeweilige Anschlag (17; 16', 16) mit einem Dämpferelement versehenen ist.Tennis training device according to one of claims 2 to 4, characterized in that the respective stop (17; 16 ', 16) is provided with a damping element. Tennisübungsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der Schwenkwinkel des Pendelarms (7) durch ein einerseits am Ständer (2; 2') und anderseits am Pendelarm (7) befestigtes und in seiner Länge einstellbares Seil definierbar ist.Tennis training device according to claim 1, characterized in that the pivoting angle of the pendulum arm (7) by a on the one hand on the stand (2, 2 ') and on the other hand on the pendulum (7) fixed and adjustable in length rope is definable. Tennisübungsgerät nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass der Pendelarm (7) zur Erzeugung eines Rückstellmomentes an seinem anderen Ende, das zur anderen Seite der Pendelachse (6) liegt als das mit dem Rotationselement (10) versehenes Ende, mit mindestens einem Gewicht (13) versehen ist.Tennis training device according to one of claims 1 to 6, characterized in that the pendulum arm (7) for generating a restoring torque at its other end, which is on the other side of the pendulum axis (6) than the one provided with the rotary member (10) end, with at least a weight (13) is provided. Tennisübungsgerät nach Anspruch 7, dadurch gekennzeichnet, dass an den Pendelarm (7) eine Anzahl von Gewichten (13) anbringbar ist, die zur Einstellung des zum Ausschwenken des Pendelarms (7) notwendigen Kraftaufwandes veränderbar ist.Tennis training device according to claim 7, characterized in that on the pendulum arm (7) a number of weights (13) is attachable, which is changeable to adjust the pivoting of the pendulum arm (7) necessary effort. Tennisübungsgerät nach Anspruch 8, dadurch gekennzeichnet, dass die Gewichte (13) als ein Satz von Platten ausgebildet sind, welche am Pendelarm (7) quer zu seiner Längsachse verstellbar angeordnet sind.Tennis training device according to claim 8, characterized in that the weights (13) are formed as a set of plates which are arranged on the pendulum arm (7) adjustable transversely to its longitudinal axis. Tennisübungsgerät nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass Mittel zur Höhenverstellung der Pendelachse (6) vorhanden sind.Tennis training device according to one of claims 1 to 8, characterized in that means for adjusting the height of the swing axle (6) are present. Tennisübungsgerät nach Anspruch 9, dadurch gekennzeichnet, dass die Mittel zur Höhenverstellung der Pendelachse (6) durch eine Anzahl von übereinanderliegenden Öffnungen (8; 8') in einer Vertikalstütze (4; 24a) des Ständers (2; 2') gebildet sind, die für die Aufnahme der Pendelachse (6) oder zur Befestigung zweier gegenseitig verstellbaren Vertikalstützen-Teile (24a, 24b), von denen einer die Pendelachse (6) aufnimmt, vorgesehen sind.Tennis practice device according to claim 9, characterized in that the means for adjusting the height of the pendulum axis (6) by a number of superimposed openings (8; 8 ') in a vertical support (4; 24a) of the stator (2; 2') are formed, the for receiving the pendulum axle (6) or for fixing two mutually adjustable vertical support parts (24a, 24b), one of which receives the pendulum axle (6) are provided. Tennisübungsgerät nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass das Rotationselement (10) mit einer die Drallrichtung (Vorwärtsdrall, Rückwärtsdrall) visualisierenden Markierung, vorzugsweise Pfeilen, versehen ist.Tennis training device according to one of claims 1 to 11, characterized in that the rotation element (10) is provided with a twisting direction (forward twist, backward twist) visualizing mark, preferably arrows. Tennisübungsgerät nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass am freien Ende des Pendelarms (7) zwei Rotationselemente (10) vorgesehen sind, die von einem Distanzträger (30) zu beiden Seiten des Pendelarms (7) bzw. der Pendelebene von dieser beabstandet gehalten werden.Tennis training device according to one of claims 1 to 11, characterized in that at the free end of the pendulum arm (7) has two Rotation elements (10) are provided, which are held by a spacer carrier (30) on both sides of the pendulum arm (7) and the pendulum plane spaced therefrom.
EP06010790A 2005-06-02 2006-05-26 Tennis practice apparatus Not-in-force EP1728536B1 (en)

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CH566151A5 (en) * 1973-09-21 1975-09-15 Wicky Pierre Practice stand for tennis training - has base water filled for weighting in use, is of adjustable height and operates in any direction
FR2371213A1 (en) * 1976-11-19 1978-06-16 Guin Bernard Tennis stroke practice aid - has springs to sustain oscillation of hinging ball arm or halt it at trajectory summit within specified time
US4417730A (en) * 1982-05-03 1983-11-29 Weiner Todd D Tennis practice apparatus
EP0236756A2 (en) * 1986-02-07 1987-09-16 Julius Mönch Tennis practice apparatus
DE4222767A1 (en) * 1992-07-10 1994-01-13 Herbert Biber Practice appliance for tennis player - has ball attached to end of guide arm and has baseplate and returns ball after hitting to player
US5685788A (en) * 1996-04-25 1997-11-11 Shy; Haw-Yaw Shock-absorbable ball practice device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009041859A2 (en) 2007-09-17 2009-04-02 Aleksandr Leonidovich Alekseev Device for training sportsmen impact movements
WO2011056055A2 (en) * 2009-11-06 2011-05-12 Jorge Pedraza Mendoza Three-dimensional multi-angular rotational guide
WO2011056055A3 (en) * 2009-11-06 2011-10-06 Jorge Pedraza Mendoza Three-dimensional multi-angular rotational guide
JP2016504125A (en) * 2013-01-24 2016-02-12 トップスピンプロ リミテッド Tennis teaching aids
WO2018055582A1 (en) * 2016-09-25 2018-03-29 Kevin Robertson Table tennis training device
CN114028785A (en) * 2021-11-30 2022-02-11 张乃伟 Pendulum table tennis exerciser
US11833407B1 (en) * 2022-05-13 2023-12-05 David Zywicki Spin n grin

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DE502006003152D1 (en) 2009-04-30
ATE425795T1 (en) 2009-04-15

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