FR3121051A1 - Tennis serve training device and training method thereof - Google Patents

Abstract

Tennis service training device and associated training method The invention is a training device (1) for the service of a tennis player comprising: a striking surface (2) intended to be struck by a tennis racket (100), anda bracket intended to receive the striking surface (2), the bracket comprising: a rack (4) and a supporting arm (5) arranged on the rack (4), and receiving the striking surface (2), the drive device (1) is characterized in that the carrier arm (5) is rotatably mounted on the carrier (4) around an axis of rotation (200) preferably inclined relative to the horizontal, and preferably vertical, the support arm (5) comprises a proximal portion (6) and a distal portion (7) connected by an elbow (8), the distal portion (7) being further from the support (4) than the proximal portion ( 6) and receives the striking surface (2), preferably the proximal portion (6) extends in a main direction (300), the axis of rotation (200) being inclined relative to said main direction (300) according to which the proximal portion (6) extends, the supporting arm (5) being shaped so that the striking surface (2) is positioned at a distance greater than or equal to the axis of rotation (200) 15 cm (10-2 meters). The invention relates to the field of sports training and in particular to tennis. Its application is particularly advantageous in training a player to perform the gesture of serving a tennis ball. Figure for abstract: Fig.2

Description

Tennis serve training device and training method thereof

The invention relates to the field of sports training and in particular for tennis. It finds for particularly advantageous application the training of a player to carry out the gesture of a service of a tennis ball.

STATE OF THE ART

Tennis is a sport in which at least two players, on a tennis court, exchange a ball by kicking it with a tennis racket.

One of the essential movements of a tennis player is the serve. The service is the action of putting the ball into play by hitting it with your racket. Tennis players take turns serving.

When serving, the tennis player has two attempts to enter the service reception area and start playing the point.
Usually, on the first try, the tennis player hits hard to win. If he misses the service area or touches the net, he hits a second time. In the second attempt, the tennis players do not hit hard, to enter the service zone and start playing the point.
If a tennis player makes a mistake twice, he loses a point.
In the history of tennis, there are few tennis players who serve over 200 km/h. Moreover, there is not a single tennis player in the world who does not make double faults.
For these reasons, the serve is the most difficult shot in tennis.
A strong serve is an undeniable asset for the player. Performing an effective service often allows the player to win.

In order for players to acquire the physical skills to perform the correct movement for an optimal serve, training the player's arm is essential. Currently, however, this training is a long and complicated process to achieve a result.
For this purpose, drives with training devices exist. Devices comprising a tennis ball attached to a firm elastic band are known for this purpose. The player hits the ball and the rubber band allows it to return to the player who can hit it again, such as for example the device described in the document WO 2005009546. This type of device makes it possible to train the player in hitting rights and lefts, but does not allow you to train specifically for the gesture of the service. This is why there are currently less than 50 tennis players with a good serve.

These devices as well as conventional training are clearly insufficient to succeed in training a tennis player correctly and quickly.

These devices fail to accurately mimic a serve which fails to develop and ensure improved biomechanics of the player's arm.

The aim of the present invention is to propose a solution which makes it possible to optimize the training of a tennis player in service by developing the force of impact and the biomechanics of the arm.

The other objects, features and advantages of the present invention will become apparent from a review of the following description and the accompanying drawings. It is understood that other benefits may be incorporated.

SUMMARY

To achieve this objective, according to one embodiment, a training device is provided for the service of a tennis player comprising: a striking surface intended to be struck by a tennis racket, and a stem intended to receive the surface striking, the stem comprising: a bearing and a support arm arranged on the bearing, and receiving the striking surface.

The drive device is characterized in that the carrier arm is rotatably mounted on the carrier around an axis of rotation preferably inclined with respect to the horizontal, and preferably vertical.

Advantageously, the training device is characterized in that the carrying arm comprises a proximal portion and a distal portion connected by an elbow, the distal portion being farther from the bearing than the proximal portion and receives the striking surface. Preferably the proximal portion extends along a main direction. Preferably, the axis of rotation is inclined relative to said main direction in which the proximal portion extends.

Advantageously, the drive device is characterized in that the carrying arm is shaped so that the striking surface is positioned at a distance from the axis of rotation by a distance greater than or equal to 15 cm (10 ^-2 meters) .

Preferably, the proximal portion extends from the elbow.

Preferably, the distal portion extends from the elbow.

Preferably, the distal portion extends to the striking surface.

The training device therefore has a striking surface arranged in such a way as to direct the strike of the racket held by the player in a manner similar to a real service and thus to improve the musculature and the gesture of the player.

The positioning of the striking surface relative to the bearing arm and the bearing allows the player to hit the ball with an external rotational movement of the arm and/or the wrist which is the movement sought for an effective service.

The training device allows rapid repetition of a gesture which ensures rapid training during which the player does not distract from other aspects. Tennis players of all ages can train preferentially from the age of 7.

Thus, the training device allows to develop the physical capacities, that is to say the muscular force of the scapular girdle of the arm and the hand in order to increase the speed of the ball, the striking force and the percentage of insertion of the ball in the service area of the court. The precise movement of the arm of the player's hand to operate the device makes it possible to stabilize the sequence of movements of the arm during the service as well as to improve muscle memory and thus make the movement of the player automatic.

Training with the device according to the invention and the system according to the invention, the weighting of the racket of which is advantageously progressive, strengthens the muscles of the arm, the hand and the shoulder girdle and can prevent or reduce the risk of a traumatism of the arm injured by the service.

The training device is advantageously easily and quickly set up and/or transportable to allow regular training of the player. No tennis court or a lot of balls are needed to train a player in the service gesture. The training time is shorter and the effect greater.

Optionally, the striking surface is integral with the carrier arm. In particular, the striking surface is not suspended from the carrying arm by a thread, a lace or a rubber band. Preferably, the striking surface is supported by the support arm by a mechanical connection, preferably inelastic.

Another aspect relates to a tennis serve training system comprising a training device as described above and a tennis racket comprising at least one removable weight. Preferably, the tennis racket comprises at least two removable weights arranged on the frame of the racket.

The combination of the training device with a weighted racquet makes it possible to gradually increase the difficulty of the training and thus to adapt to the players.

Another aspect concerns a tennis serve training method comprising the use of a training device or a training system as described above.

BRIEF DESCRIPTION OF FIGURES

The aims, objects, as well as the characteristics and advantages of the invention will emerge better from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which:

There shows a perspective view of a training device according to the invention with a right-handed player shown.

There shows a perspective view of a training device according to the invention for a left-handed player.

There shows a perspective view of a racket and associated weights.

There shows an exploded view of a drive device according to .

There shows a detail view of the .

The drawings are given by way of example and do not limit the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily scaled to practical applications.

DETAILED DESCRIPTION

Before starting a detailed review of the embodiments of the invention, optional characteristics are set out below which may possibly be used in combination or alternatively:

According to one example, the distal portion extends in a main direction comprising perpendicular to the main direction of the proximal portion. This arrangement makes it possible to distance the striking surface from the proximal portion, allowing the player to hit the ball without hitting the bearing arm.

According to one example, the distal portion extends mainly in a horizontal direction. Preferably in a horizontal plane.

Advantageously, the elbow is configured so that the striking surface is forward of the support arm.

According to one example, the drive device comprises a return member configured to oppose the rotation of the support arm and bring it back to a predetermined position, preferably a position of equilibrium, a stable position. This arrangement ensures the repositioning of the striking surface in the initial position after the user has struck. Advantageously, the return member is adapted to the strike force of the user.

According to one example, the axis of rotation is vertical.

According to one example, the bearing extends mainly in a vertical direction, preferably coaxial with the axis of rotation. Preferably, the rack is vertical.

According to one example, the striking surface is a ball or pad, integral with the supporting arm in rotation around the axis of rotation.

According to one example, the drive device comprises an assembly for adjusting the height of the support arm. This arrangement makes it possible to adapt the height of the striking surface to the player who uses the training device so that he has his arm outstretched to perform the strike.

According to one example, the training device comprises a base receiving the carrier, preferably now alone the carrier, the base being intended to rest on a ground.

According to one example, the base comprises a receiving surface intended to receive part of the tennis player's body, preferably the knees and at least part of the tennis player's shins.

According to one example, the tennis racket comprises at least two removable weights arranged on the profile of the racket, preferably on either side of the axis of symmetry of the racket. According to one possibility, the weights have different weights.

According to one example, the training method comprises a step of hitting the hitting surface with a racket held at arm's length outstretched above the head of a player.

According to one example, during the striking step, the weight of the player (500) is essentially supported by his knees and/or his shins which rest on a reception surface, preferably carried by a base of the training device .

Thus, the weight of the player is transferred from his knees and / or his shins directly to the landing surface without passing through his feet.

Preferably, during the striking step, the player's knees and/or shins rest on a receiving surface carried by a base of the training device.

Preferably, during the hitting stage, the player's weight is entirely supported by the landing surface.

According to one example, the training method comprises a step of adjusting the height of the striking surface and advantageously a step of positioning the player, for example on his knees, on the base of the device. It is advantageous to keep the player on their knees so that the legs and body do not interfere with training strength, speed and the biomechanics of arm movement.

In one example, during the hitting step, the player holds the racquet with one hand and stands downwind with their other hand.

For the remainder of the description, the term 'top' and 'bottom', or their derivatives, is understood to mean a quality of relative positioning of an element of the accumulator when the latter is functionally installed, the 'top' being oriented away from the ground and the 'bottom' being oriented towards the ground. The upper end is at the top and the lower end is at the bottom.

By vertical is meant what is parallel to the direction of gravity given in particular by the plumb line and by horizontal what is perpendicular to the vertical. Top and bottom being vertically opposed.

Horizontal means what is perpendicular to the vertical.

The training device 1 according to the invention is intended for training a tennis player and more precisely for the service gesture.

The training device 1 comprises a striking surface 2 intended to be struck by a tennis racket, preferably manipulated by a player.

The training device 1 comprises, according to one possibility, a stem intended to receive the striking surface 2. The stem advantageously comprises a bearing 4 and a carrier arm 5 arranged on the bearing 4. The striking surface 2 is preferably carried by the carrier arm 4.

According to one possibility, bearing 4 bears against a flat surface such as a floor, a ceiling, or a wall. Preferably, the drive device 1 comprises a base 15 receiving the carrier 4. The base being supported by a flat surface such as the ground. According to another possibility not shown, bearing 4 is preferably held by means of attachment to a vertical wall. In this case, the rack 4 extends from the wall and receives the support arm 5. According to another possibility, not shown, the rack 4 is preferably held by means of attachment to the ceiling. In this case, the bearing 4 extends from the ceiling preferably towards the ground and receives the supporting arm 5.

The proximal portion 6 of the carrier arm 5 extends mainly from the elbow 8 in a main direction 300. The carrier arm 5 is articulated in rotation on the bearing 4, for example by means of a bearing, provided for example with bearings. The carrier arm 5 preferably comprises a proximal portion 6 and a distal portion 7. The distal portion 7 extends from the striking surface 2. The distal portion 7 and connected to the proximal portion 6 by an elbow 8. The proximal portion 6 extends from the elbow 8. Advantageously, the proximal portion 6 and the distal portion 7 of the support arm 5 are connected by an elbow 8. The elbow 8 forms an angle between the proximal portion 6 and the distal portion 7 defining a change of direction between the proximal portion 6 and the distal portion 7. Preferably, the elbow 8 is configured to ensure a change of direction in a horizontal plane between the direction of the proximal portion 6 and the direction of the distal portion 7 preferably perpendicularly. The elbow 8 can have different shapes: a "U" shape or a "V" shape.

Depending on the possibility, the proximal portion 6 has a dimension in length along the main direction 300 comprised between the dimension equivalent to a half racket and a dimension equivalent to 2 tennis rackets. The dimension equivalent to 1/2 tennis racket corresponds to the distance between the axis of symmetry of a racket and the frame 101, the distance being perpendicular to the axis of symmetry. The dimension equivalent to a tennis racket corresponds to the distance separating two points of the frame 101 on either side of the axis of symmetry of the racket, the distance between the two points being perpendicular to the axis of symmetry. By way of example, the length dimension of the proximal portion is between 15 cm and 50 cm, ie 0.15 m and 0.5 m.

According to one possibility, the dimension of the proximal portion 7, that is to say the distance separating the striking surface 2 from the elbow 8 is between 5 and 25 centimeters.

According to one possibility, the carrier arm 5 comprises an advantageously vertical portion 20 connected to the proximal portion 6 by an elbow 21. Thus, the carrier arm 5 comprises, advantageously arranged in the extension of the carrier 4 more precisely of its longitudinal axis, a portion 20, preferably extends in a vertical direction, then an elbow 21 connecting the portion 20 to the proximal portion 6. Preferably, the elbow 21 is configured to ensure a change of direction between a vertical direction of the portion 20 and a direction preferably horizontal of the proximal portion 6. Then the carrying arm 5 comprises, after the proximal portion 6, the elbow 8 connecting the proximal portion 6 to the distal portion 7.

According to one embodiment, the proximal 6 and distal 7 portions extend along segments or curves included in the same plane, a horizontal plane in the example illustrated.

The striking surface 2 is arranged on the distal portion 7. Preferably, the striking surface 2 is arranged at the distal end of the distal portion 7. The striking surface 2 is thus arranged on the support arm 5 at its distal end. , advantageously that is to say at the point of the support arm 5 farthest from the bearing 4.

The striking surface 2 is firmly fixed to the supporting arm 5. The striking surface 2 is advantageously fixed directly to the supporting arm by a rigid fixing means. Advantageously, the striking surface 2 is not connected to the carrying arm 5 by an elastic means. The striking surface 2 is in inelastic connection, preferably non-deformable, with the carrier arm. Preferably, the striking surface 2 is in inextensible connection with the support arm 5 and more precisely with the distal portion 7.

The striking surface 2 can be a ball 10 or a pad 11. For example, the striking surface 2 and the distal portion 7 have complementary fixing means such as a female part and a male part, for example a screw and a no screw, ensuring an integral, preferably removable, and rigid fixing of the striking surface 2 on the supporting arm. The striking surface 2 is preferably integral with the support arm 5 in rotation around the axis of rotation 200.

According to a preferred possibility, the distal portion 7 extends in a direction 400 comprising a component perpendicular to the proximal portion 6. The distal portion 7 therefore extends in a longitudinal direction different from the main direction 300 of the proximal portion 6. Preferably, the distal portion 7 is arranged perpendicular to the proximal portion 6.

According to an advantageous embodiment, the distal portion 7 extends in a horizontal plane. Preferably, the proximal portion 6 and the distal portion 7 extend in the same plane, advantageously a horizontal plane.

According to one possibility, the proximal portion 6 is telescopic to allow adjustment of the distance of the striking surface 2 from the bearing 4.

Advantageously, the striking surface 2 is arranged in front of the support arm 5 to allow the player to strike the striking surface 2 without touching the training device and in particular the support arm 5. The striking surface 2 is prominent relative to the vertical plane containing the proximal portion 6.

Preferably, in the initial position the striking surface 2 is positioned between the axis of rotation 200 and the player 500 in a direction passing through the axis of rotation 200 and the player 500. Thus, in front of the axis of rotation 200 in a vertical plane passing through the axis of rotation 200 is parallel to the player's shoulders when hitting.

Advantageously, the support arm 5 is rotatable around an axis of rotation 200. The axis of rotation 200 is inclined with respect to the main direction 300 of the proximal portion 6. Preferably, the support arm 5 is not mobile in rotation around the main direction 300 of the proximal portion 6. The axis of rotation 200 is advantageously non-horizontal. Preferably, the axis of rotation is vertical or inclined relative to the horizontal.

According to a preferred embodiment, the axis of rotation 200 is vertical. The carrier arm 5 is thus movable around a vertical axis of rotation 200 .

According to one embodiment, the drive device 1 comprises a return member 9 configured to oppose the rotation of the carrier arm 5. Preferably, the return member 9 is also configured to bring the carrier arm 5 back into a equilibrium position. The return member 9 is for example a spring, one end of which is secured to the carrier 4 and the other end of which is secured to the carrier arm 5. The striking of the striking surface 2 by the player causes a movement of the carrier arm 5, preferentially in rotation around the axis of rotation 200, and a deformation of the return member 9. The return member 9 exerts an opposite force on the carrier arm 5 to regain a position of equilibrium. The carrying arm 5 is thus brought back into a position of equilibrium awaiting the next strike. According to one possibility, means for adjusting the return member 9 are included in the training device 1 to make it possible to control and modify the return force of the return member according to the training needs of the player. .

According to one possibility, the striking surface 2 performs less than one revolution or only one revolution around the axis of rotation 200.

According to an embodiment which may or may not be combined with the embodiment comprising a return member 9, the drive device 1 comprises a limit stop 22 . Advantageously, the stop 22 is configured to limit the amplitude of the rotation of the support arm 5. The stop 22 at the end of travel is for example arranged on the support arm 5, preferably at its junction with the bearing 4. The stop 22 can be carried by an intermediate piece secured to the support arm 5. The abutment 22 is configured to come into abutment against an abutment surface 23 arranged for example on the bearing 4. The abutment surface 23 can be carried by an intermediate piece secured to the bearing 4. After striking, carrier arm 5 moves in rotation around axis of rotation 200. Stop 22 comes into contact with stop surface 23, preventing carrier arm 5 from continuing to move. Preferably, the return member 9 then allows the carrier arm 5 to return to its initial position, ready for the next strike.

Advantageously, the training device 1 comprises a member for adjusting the height of the striking surface 2. According to one embodiment, the bearing 4 is telescopic to allow adaptation of the height of the carrying arm 5 and of the surface of hits 2 depending on the player. The carrier 4 comprises for example a first hollow profile 12 which can be of circular section and a second sliding profile 13 configured to slide in the first hollow profile 12. The carrier 4 comprises according to one possibility a clamping lever 14 making it possible to fix the profile 13 at a certain level of height relative to the hollow section 12.

According to one embodiment, the drive device 1 comprises a base 15 receiving the carrier 4. By way of example as illustrated in all the figures, the base 15 is formed of profiles, for example metal, ensuring stability of the drive device 1. According to another possibility not shown, the base 15 may be a container receiving water or sand. According to one possibility, the base 15 comprises vibration stabilizers 18 connecting the bearing 4 to the base 15 configured to limit the transmission of vibrations between the bearing 4 and the base 15 and to optimize the stability of the drive device 1.

According to a possibility not shown, the drive device 1 comprises a counterweight, for example metallic, arranged on the bearing 4 and damping the vibrations of the bearing 4. The counterweight 19 is for example of a weight of 2 kg. The counterweight is fixed either inside the profile 13 or outside, for example by hook-and-loop strips.

Preferably, the base 15 comprises a receiving surface 16 intended to receive the player 500 in particular his knees 103 and preferably at least part of his shins. The landing surface 16 is advantageously arranged on the base 15. This arrangement allows the weight of the player on the landing surface 16 in connection with the base 15 to keep the training device stable when hitting the hitting surface 2 by the player without requiring a heavy and difficult to transport counterweight. Player 500 acts as a counterweight.

According to an embodiment not shown, the landing surface 16 can also receive the player's feet to enable him to strike the striking surface 2 in a standing position.

The training device 1 is suitable for right-handed or left-handed players. According to one possibility, the reception surface 16 receiving the player 500 is arranged at the level of the base 15 to face the striking surface 2.

Advantageously, the drive device 1 is light and allows easy movement thereof. As an indication, the total weight of the drive device is illustrated in the figures and is between 15 and 30 kilos, preferably of the order of 20 kg.

According to another aspect, the invention relates to a method of setting up the training device advantageously comprising the selection and/or the positioning of the support arm for a left-handed right-handed player. The method advantageously comprises the positioning of the reception surface 16 at the level of the base 15 of the drive device 1. Preferably, the reception surface 16 is arranged to face the striking surface 2. The method advantageously comprises the adjustment the height of the striking surface 2. This step of adjusting the height of the striking surface 2 is done according to the player. Advantageously, the height of the striking surface 2 is defined so that the player can type in the striking surface 2 with his arm extended above his head. Preferably, the height of the striking surface 2 is adjusted by sliding the sliding profile 13 in the hollow profile 12, then by locking this position, for example by the clamping lever 14 or by clip systems not shown. .

According to another aspect, the invention relates to a tennis training system, more specifically for the service. The training system comprises the device as described above as well as a tennis racket comprising at least one weight 103. Preferably, the at least one weight 103 is removable. According to one possibility, the tennis racket 100 is provided with a central ballast 103b. According to another possibility, the tennis racket 100 is provided with two weights 103a arranged on the frame 101 of the racket 100. Preferably, the racket receives a weight on either side of its axis of symmetry. The weights of the weights can be different to help direct the movement of the player's wrist and arm. Likewise, the positions of the weights 102a on the frame 101 on either side of the axis of symmetry of the racket 100 may or may not be symmetrical with respect to said axis of symmetry.

There illustrates an embodiment according to the invention for a right-handed person. There illustrates an embodiment according to the invention for a left-handed person. On the , a user 500 is represented in the training position. According to a preferred possibility, the user 500 positions himself with the knees 503 and preferably at least part of the shins in contact with the receiving surface 16 of the base 15 while facing the bearing 4 of the stem. The user 500 holds the racquet in his left hand facing the striking surface 2. Preferably, the user 500 has his arm 501 stretched out and the striking surface 2 is substantially positioned in the middle of the racquet 100. The user can with his other hand 502 hold himself downwind 4 to both stabilize himself and stabilize the device 1. The user 500 will then make movements back and forth with his wrist and/or his arm to strike the striking surface 2. Preferably, the configuration of the training device 1 and of its striking surface 2 and possibly the preferentially asymmetrical weighting of the racket 100 favor an external rotation of the arm 501 of the user 500 which participates in strengthening the muscles essential to the effective service in tennis such as for example the supinator muscles.

There illustrates an example of an aspect of the invention relating to a weighted racquet. Racket 100 is provided with weights 103a, 103b arranged on the racket. According to one possibility, the racket comprises two kinds of ballast, weights 103a arranged on the frame 101 of the racket or a ballast 103 b arranged at the level of the handle 102 or of the heart at the junction of the handle 102 and the frame 101 or even on the sieve. By way of example, weights are plastic or metal or bag-shaped weights with filler and hook-and-loop strips configured to be removably attached to the racquet. The weights preferably have a weight ranging from 25 to 300 g. Preferably, from 50 to 300 g for the ballast 103b and from 25 to 50 g for the ballast 103a. The choice of weights is made according to the player's age and development.

There illustrates an exploded view of the drive device according to one embodiment of the invention. The upper part of the drive device 1 of the is detailed in .

In , the carrier arm 5 receives as striking surface 2 a pad 11. The pad 11 is for example screwed to the distal end of the distal portion 7 of the carrier arm 5. On this , is also illustrated in detail the return member 9 and its attachment to the carrier 4 more specifically to the sliding profile 13 and to the carrier arm 5. According to the embodiment illustrated in this figure, the carrier arm 5 comprises a vertical portion 20 connected to the proximal portion 6 by the elbow 21. The vertical portion 20 is connected directly or indirectly to the return member 9 more precisely at one end of the spring. As illustrated in , the return member is a spring fixed to the sliding profile 13 on the one hand and to the support arm 5 on the other hand, for example by a set of parts shown.

• Le joueur est positionné tel qu’en figure 1, c’est-à-dire préférentiellement les genoux 503 en appui sur la surface de réception 16, en alternative le joueur peut être debout. Le joueur 501 a le bras tendu au-dessus de sa tête et il va frapper la surface de frappe 2 par un unique mouvement de son poignet préférentiellement par rotation en torsion externe.
• Le joueur toujours dans la même position que l’exercice précédent va imiter précisément le geste du service de tennis en déplaçant l’ensemble du bras tendu d’avant en arrière avec une torsion de la main telle qu’apprise à l’exercice précédent.

Examples of exercises that can be performed using the training device 1 according to the invention:

• The player is positioned as in Figure 1, that is to say preferably the knees 503 resting on the receiving surface 16, alternatively the player can be standing. The player 501 has his arm stretched above his head and he is going to hit the striking surface 2 with a single movement of his wrist, preferably by rotation in external torsion.
• The player, still in the same position as the previous exercise, will precisely imitate the gesture of the tennis serve by moving the entire outstretched arm back and forth with a twist of the hand as learned in the previous exercise.

The trainer allows the biomechanical development of arm and hand movement. Essential muscle groups are trained.

The training device allows players to train without having to travel to a tennis court. The training device is compact and takes up little space and is easy to install and move. It can be used indoors or outdoors.

The training of the player with the training device according to the invention is more effective and therefore faster.

These exercises are performed with or without weight on the racket.

The invention is not limited to the embodiments previously described and extends to all the embodiments covered by the invention.

List of references
1. Drive device
2. Strike surface
4. Bearing
5. Support arm
6. Proximal portion
7. Distal portion
8. Elbows
9. Reminder body
10. Ball
11. Pad
12. Hollow tube
13. Sliding tube
14. Clamping lever
15. Basis
16. Landing area
17.Clip
18. Vibration stabilizer
19. Counterweight
20. Vertical portion
21. Elbow
22. Stopper
23. Abutment surface
100. Racket
101. Racquet frame
102. Racket handle
103. Ballast
200. Support arm rotation axis
300. Main direction of the proximal portion
400. Direction of the distal portion
500. User
501. Left arm
502. Right arm
503. Knees

Claims (15)

Training device (1) for the service of a tennis player including:

• a striking surface (2) intended to be struck by a tennis racket (100), and
• a stem intended to receive the striking surface (2), the stem comprising:
  • a rack (4) and
  • a carrying arm (5) arranged on the bearing (4), and receiving the striking surface (2),

the drive device (1) is characterized in that the carrier arm (5) is rotatably mounted on the carrier (4) around an axis of rotation (200), the carrier arm (5) comprises a proximal portion ( 6) and a distal portion (7) connected by an elbow (8), the distal portion (7) being farther from the bearing (4) than the proximal portion (6) and receives the striking surface (2), the portion (6) extends along a main direction (300), the axis of rotation (200) being inclined with respect to said main direction (300) along which the proximal portion (6) extends, the supporting arm ( 5) being shaped so that the striking surface (2) is positioned at a distance from the axis of rotation (200) by a distance greater than or equal to 15 cm (10^-2meters). Training device according to the preceding claim, in which the distal portion (7) extends in a main direction (400) perpendicular to the main direction (300) of the proximal portion (6). Training device (1) according to the preceding claim, in which the distal portion (7) extends mainly in a horizontal direction. Drive device (1) according to any one of the preceding claims, comprising a return member (9) configured to oppose the rotation of the support arm (5) around the said axis of rotation (200) and bring it back into a predetermined position. A drive device (1) according to any preceding claim wherein the axis of rotation (200) is vertical. Drive device (1) according to any one of the preceding claims, in which the carrier (4) extends mainly in a vertical direction, preferably coaxial with the axis of rotation (200). Training device (1) according to the preceding claim, in which the striking surface (2) is a ball (10) or pad (11), integral with the support arm (5) in rotation around the axis of rotation (200 ). Training device (1) according to any one of the preceding claims comprising a base (15) holding the carrier (4) by itself, the base (15) being intended to rest on the ground. Training device (1) according to the preceding claim, in which the base (15) comprises a receiving surface (16) intended to receive a part of the body of the tennis player (500), the knees and at least part of the shins. of the tennis player (500). A tennis serve training system comprising a training device (1) according to any one of the preceding claims and a tennis racket (100), the tennis racket (100) comprising at least one removable weight (103) . A method of training tennis serve comprising the use of a training device (1) according to any one of claims 1 to 8 or a training system of claim 10. Training method according to the preceding claim comprises a step of hitting the hitting surface (2) with a racket (100) held at arm's length outstretched above the head of a player (500). Training method according to the preceding claim, in which during the striking step, the weight of the player (500) is essentially supported by his knees and/or his shins which rest on a landing surface (16). Training method according to any one of the two preceding claims, comprising a step of adjusting the height of the striking surface (2) and a step of placing the player (500) on his knees on the base (15) of the drive device (1). Training method according to any one of the three preceding claims, in which during the striking step, the player (500) holds the racket (100) with one hand and stands downwind (4) with his other hand .