EP1303335A1 - Device for golf training practice and related method - Google Patents

Device for golf training practice and related method

Info

Publication number
EP1303335A1
EP1303335A1 EP01956600A EP01956600A EP1303335A1 EP 1303335 A1 EP1303335 A1 EP 1303335A1 EP 01956600 A EP01956600 A EP 01956600A EP 01956600 A EP01956600 A EP 01956600A EP 1303335 A1 EP1303335 A1 EP 1303335A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
rod
ball
horizontal axis
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01956600A
Other languages
German (de)
French (fr)
Other versions
EP1303335B1 (en
Inventor
Raymond Denance
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1303335A1 publication Critical patent/EP1303335A1/en
Application granted granted Critical
Publication of EP1303335B1 publication Critical patent/EP1303335B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A63B69/36—Training appliances or apparatus for special sports for golf
    • A63B69/3623—Training appliances or apparatus for special sports for golf for driving
    • 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
    • A63B69/0079—Balls tethered to a line or cord

Definitions

  • the present invention relates firstly to a training device for playing golf. It also relates to a method capable of being implemented by the device according to the invention, and allows the calculation of the length of a shot and its angular offset relative to a reference trajectory.
  • the invention will find its application in the field of training for the practice of golf, whether in a club or in an individual setting, with a private individual.
  • the invention essentially allows the user wishing to train, to obtain from the machine an analysis of the shot he has just made.
  • the device and the calculation method according to the invention will enable it to determine the length of its shot as well as its angular offset with respect to a reference trajectory. He can thus estimate very precisely the theoretical point of impact of the ball.
  • the connecting means is a cam cooperating with the main axis which is mobile in rotation and in translation so that that any movement of said connecting means in its plane, during the rotation of the assembly, causes a displacement in translation of said movable main axis in rotation and in translation, said connecting means transmits proportionally to said movable main axis speed of rotation of the ball around said axis and its firing angle, and that one or more sensors transmit data to means which analyze the speed of rotation of the axis to determine the distance of the shot and the transverse movement of said axis mobile to determine the angle of fire and / or the distance between the point of fall of the bullet and the reference trajectory.
  • the rod capable of being moved in axial translation plays the role of core for a coil to determine its displacement, thus forming an inductive sensor.
  • a drawback of this configuration is that it is relatively complex, the measurement means being nested there with an essential element of the mechanism.
  • the object of the present invention is to remedy the drawbacks of the devices currently existing.
  • Another advantage of the device, presented here, is that a distinction is made between the regular counting of the number of turns made by the rod and the measurement of the angular offset. There is in practice the elimination of false measurements and a high reliability of the two important parameters for the player, given that their methods of obtaining are independent.
  • the present invention relates to a golf training device comprising: a) a support bracket for a ball suspended by a cable at the end of the horizontal branch of the bracket, said cable being connected to a first end of a rod with a horizontal axis by means of motion transmission means suitable for:
  • measuring means include
  • At least one magnetic tachometer sensor cooperating with a metal bar of tachometer placed on the periphery of the rod so as to pass each revolution of the cylinder opposite the tachometer sensor;
  • At least one lateral magnetic sensor cooperating with at least two lateral metal marks placed at different places on the periphery of the cylinder;
  • the lateral metal marks are positioned diametrically opposite on the cylinder and in the vertical direction when the bale is at rest, and the lateral sensor is placed with regard to the horizontal diameter of the cylinder, for a measurement of the lateral sensor three-quarters of the first turn and a quarter of the last round.
  • the axial displacement sensor is a magnetic sensor placed opposite the cylinder and in its axis and it cooperates with a magnetic axial reference placed on the cylinder.
  • the magnetic sensors are Hall effect sensors.
  • the invention also relates to a method for calculating the length of a shot and its angular offset with respect to a reference trajectory, for training in the practice of golf, capable of being implemented by the device according to the invention, in which:
  • the angular offset movement of the golf ball with respect to the reference path is transformed into a translational movement of a rod with a horizontal axis, and to a cylinder secured to the rod - the rotational movement d is transmitted horizontal axis of the ball to the cylinder,
  • Figure 1 is a general side view in section of the device according to the invention.
  • FIG. 2 is a horizontal section at the level of the rod according to the particular embodiment of FIG. 1.
  • a golf ball 18 is suspended from a cable 17.
  • the device 1 will include a bracket 2, generally mounted on a plate receiving the assembly and serving for the placement of the player.
  • the bracket 2 has a substantially oblique portion and a horizontal branch substantially oriented in the direction of the horizontal axis 21 identified in phantom in Figure 1.
  • the mounting of the ball 18 is carried out by means of a rod 19 of horizontal axis corresponding to horizontal axis 21, by means of transmission of movements.
  • the movement transmission means make it possible to transform the movement of the ball 18 with a view to its exploitation for the measurement and calculation of the desired parameters.
  • the transmission means drive the rod 19 in proper rotation by the rotation of the ball along the horizontal axis 21 when the player taps it.
  • the rod 19 is slidably mounted inside the hollow shaft 4. To connect the free end of the rod 19 and the ball suspension cable 17
  • a cable tie 5 is provided, as shown in FIGS. 1 and 2.
  • the cable tie 5 includes an adjustable end portion adapted to receive and hold the cable 17. The possible adjustment allows the player to position the ball 18 at the desired height relative to the mat. At its other end, the cable tie 5 is pivotally mounted on the hollow shaft 4.
  • the cable tie receives a connecting rod 6 pivotally mounted relative to the cable tie 5 along an axis different from the axis 22, but in the same direction.
  • the hollow shaft ends in the form of a fork for receiving the end of the cable tie 5.
  • the measurements are advantageously carried out at the other end of the rod 19 (the one opposite to the connection with the cable 17).
  • the rod 19 advantageously comprises at this point a cylinder 7 kinematically integral with the rod 19 and of a larger diameter, preferably made of non-metallic and magnetically neutral material, the cylinder is capable of receiving a part of the necessary organs on measures.
  • the measurement means comprise at least one magnetic sensor 14 of tachometer, cooperating with a metal bar 9 placed on the periphery of the cylinder 7 so as to pass each revolution of the cylinder 7 opposite the tachometer sensor 14.
  • the measurement means comprise at least one lateral magnetic sensor 12 cooperating with at least two lateral metal marks 8, 8bis placed at different locations on the periphery of the cylinder 7.
  • an axial displacement sensor identified 13 in FIG. 2 allows the axial position of the cylinder 7 to be measured at determined times. These determined times are located when the lateral magnetic sensor 12 is activated, that is to say when the metal pins 8, 8a pass opposite.
  • an axial mark 10 will be formed in the horizontal axis 21 opposite the axial sensor 13 to carry out the detection of the translational displacement of the rod 19 and of the cylinder 7.
  • the measurement means comprise two lateral marks 8
  • Detection is thus carried out three quarters of the first round and one quarter of the second round.
  • the lateral marks 8, ⁇ bis will preferably be positioned so that they define a vertical diameter of the cylinder 7, when the ball 18 is at rest.
  • the lateral sensor 12 will be positioned to be placed in the direction of a horizontal diameter of the cylinder 7 when the ball is at rest.
  • the lateral sensor 12 will perform a detection at three quarters of the first round and one quarter of the second round.
  • a magnetic sensor 13 will preferably be used with an axial reference mark 10 magnetized.
  • the magnetic sensors 12, 13 and 14 will be Hall effect sensors therefore with inductive technology.
  • the sensors 12 and 14 will be coupled to magnets 15 and 16 respectively and positioned on a support 11, integral with the bracket 2.
  • the fact of measuring the angular offset at these times is particularly advantageous, since it is at the start of the movement of the ball 18 that the angular offset is maximum. Furthermore, it is three-quarters of the first round and the first quarter of the second round that we observe the maximum angular offset.
  • the number of turns performed by the cylinder 7 is counted.
  • the tachometer sensor 14 detects the passage at each revolution of the metal bar 9.
  • the metal bar 9 is angularly offset with respect to the lateral pins 8, ⁇ bis.
  • the measurement data thus gathered concerning the number of turns performed by the cylinder 7 and its maximum angular displacement at the start of the shot allow the angular offset of the bullet 18 and the length of the shot to be calculated.
  • the calculation method which is capable of being implemented by the device, according to precise parameters, makes it possible to program a microprocessor and to obtain the display, on a screen, of the result of a shot, that is to say -to say the angular offset and the distance according to the club used and the usual level of the player ,.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Rehabilitation Tools (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

The invention concerns a device for golf training practice comprising: a) a stand supporting a ball hanging from a cable at the end of the horizontal branch of the stand, said cable being connected to a first end of a stem with horizontal axis via movement transmission means adapted to: drive the stem in natural rotation by the rotation of the ball along the horizontal axis; to drive the stem in translation along the horizontal axis by the offsetting movement of the ball relative to a plane orthogonal to the horizontal axis; b) means for measuring the number of revolutions and of axial displacement produced by the stem and means for analysing the measurement data to calculate the distance covered by the shot and its angular offset relative to a reference trajectory. The invention is characterised in that said device comprises measuring means including: at least a revolution-counting magnetic sensor co-operating with a revolution counting metal bar arranged on the periphery of the stem so that it passes at each revolution of the stem opposite the counting sensor; at least a lateral magnetic sensor co-operating with at least two lateral metal markers placed at different sites of the periphery of the stem; a device sensing the axial displacement of the stem for measuring its axial position when the bars pass opposite the lateral sensor. The invention also concerns a calculating method, based on specific parameters, for programming a microprocessor and for obtaining the display, on a display screen, the result of a shot, that is the angular offset and the distance on the basis of the club used and the player's usual level, capable of being implemented by the device.

Description

«Dispositif d'entraînement à la pratique du golf et procédé s'y rapportant» "Golf training device and method relating thereto"
La présente invention concerne d'abord un dispositif d'entraînement à la pratique du golf. Elle concerne également un procédé apte à être mis en œuvre par le dispositif selon l'invention, et permet le calcul de la longueur d'un tir et de son décalage angulaire par rapport à une trajectoire de référence.The present invention relates firstly to a training device for playing golf. It also relates to a method capable of being implemented by the device according to the invention, and allows the calculation of the length of a shot and its angular offset relative to a reference trajectory.
L'invention trouvera son application dans le domaine de l'entraînement à la pratique du golf, que ce soit en club ou dans un cadre individuel, chez un particulier.The invention will find its application in the field of training for the practice of golf, whether in a club or in an individual setting, with a private individual.
L'invention permet essentiellement, à l'utilisateur désireux de s'entraîner, d'obtenir de la machine une analyse du tir qu'il vient de réaliser. En particulier, le dispositif et le procédé de calcul selon l'invention, lui permettront de déterminer la longueur de son tir ainsi que son décalage angulaire par rapport à une trajectoire de référence. Il peut ainsi estimer de façon très précise le point théorique d'impact de la balle.The invention essentially allows the user wishing to train, to obtain from the machine an analysis of the shot he has just made. In particular, the device and the calculation method according to the invention will enable it to determine the length of its shot as well as its angular offset with respect to a reference trajectory. He can thus estimate very precisely the theoretical point of impact of the ball.
Dans ce domaine, on connaît du document EP-A-0.682.958 du demandeur un dispositif d'entraînement pour golfeurs destiné à mesurer et analyser la frappe d'une balle, ledit dispositif est du type constitué :In this field, there is known from document EP-A-0.682.958 of the applicant a training device for golfers intended to measure and analyze the striking of a ball, said device is of the type constituted:
- d'une potence dont l'extrémité libre de la branche horizontale est équipée d'un câble suspendu de manière rotative et à l'extrémité inférieure duquel est fixée et suspendue la balle de golf au niveau du sol, lorsque le dispositif est au repos, la branche contient un axe principal mobile en rotation et en translation, selon la distance et l'angle de tir- a bracket whose free end of the horizontal branch is equipped with a cable suspended in a rotary manner and at the lower end of which is fixed and suspended the golf ball at ground level, when the device is at rest , branch contains a main axis movable in rotation and in translation, according to the distance and the firing angle
- d'un moyen de liaison assurant la liaison entre l'extrémité supérieure du câble et l'axe principal caractérisé par le fait que le moyen de liaison est une came coopérant avec l'axe principal mobile en rotation et en translation de manière à ce que tout déplacement dudit moyen de liaison dans son plan, lors de la mise en rotation de l'ensemble, entraîne un déplacement en translation dudit axe principal mobile en rotation et en translation, ledit moyen de liaison transmet de manière proportionnelle audit axe principal mobile la vitesse de rotation de la balle autour dudit axe et son angle de tir, et qu'un ou plusieurs capteurs transmettent des données à des moyens qui analysent la vitesse de rotation de l'axe pour déterminer la distance du tir et le déplacement transversal dudit axe mobile pour déterminer l'angle de tir et/ou la distance entre le point de chute de la balle et la trajectoire de référence.- a connecting means ensuring the connection between the upper end of the cable and the main axis, characterized in that the connecting means is a cam cooperating with the main axis which is mobile in rotation and in translation so that that any movement of said connecting means in its plane, during the rotation of the assembly, causes a displacement in translation of said movable main axis in rotation and in translation, said connecting means transmits proportionally to said movable main axis speed of rotation of the ball around said axis and its firing angle, and that one or more sensors transmit data to means which analyze the speed of rotation of the axis to determine the distance of the shot and the transverse movement of said axis mobile to determine the angle of fire and / or the distance between the point of fall of the bullet and the reference trajectory.
Le fonctionnement mécanique d'un tel dispositif est satisfaisant. Cependant, des problèmes de fiabilité et de précision des calculs de longueur de tir et de décalage angulaire se posent par la mise en œuvre de ce dispositif.The mechanical operation of such a device is satisfactory. However, problems of reliability and precision of the calculations of firing length and angular offset arise by the implementation of this device.
En effet, on a constaté que l'utilisation de capteurs optiques, placés en bout d'arbre, aptes à détecter des transitions entre une zone peinte en blanc et une zone peinte en noir à l'extrémité d'une tige en rotation, présentait des inconvénients. En premier lieu, la transition entre ces deux zones peintes de couleurs différentes engendre des erreurs de mesure particulièrement lorsque le câble de suspension de la balle oscille au cours de sa rotation, oscillations dues à l'impossibilité pour la balle de tourner sur elle-même dans le sens perpendiculaire au câble. En effet, dans ce cas, on constate momentanément des retours en arrière de la tige, ce qui peut entraîner des doublés de détection par le capteur optique. Les mesures de comptage de tours et du décalage angulaire s'en trouvent complètement faussées.Indeed, it was found that the use of optical sensors, placed at the end of the shaft, capable of detecting transitions between an area painted in white and an area painted in black at the end of a rotating rod, exhibited disadvantages. First, the transition between these two painted areas of different colors causes measurement errors, particularly when the ball suspension cable oscillates during its rotation, oscillations due to the impossibility for the ball to turn on itself. in the direction perpendicular to the cable. In fact, in this case, there is a momentary reversal of the rod, which can lead to double detection by the optical sensor. The lap count and angular offset measurements are completely distorted.
Pa ailleurs, selon la configuration proposée par EP-A-0.682.958, la tige apte à être mue en translation axiale, joue le rôle de noyau pour une bobine afin de déterminer son déplacement, formant ainsi un capteur inductif. Un inconvénient de cette configuration est qu'elle est relativement complexe, les moyens de mesure s'y trouvant imbriqués avec un élément essentiel du mécanisme.Pa elsewhere, according to the configuration proposed by EP-A-0.682.958, the rod capable of being moved in axial translation, plays the role of core for a coil to determine its displacement, thus forming an inductive sensor. A drawback of this configuration is that it is relatively complex, the measurement means being nested there with an essential element of the mechanism.
On a également constaté que les mesures du décalage angulaire et de la distance du tir était, dans le cadre du dispositif antérieur, trop liés à l'exploitation des deux types de mesures, ce qui risquait, en cas d'erreurs de détection, de fausser non seulement la longueur du tir, mais aussi le décalage angulaire.It was also found that the measurements of the angular offset and of the shooting distance were, in the context of the prior device, too linked to the use of the two types of measurement, which risked, in the event of detection errors, distort not only the length of the shot, but also the angular offset.
Il existe donc actuellement un besoin en ce qui concerne l'optimisation des mesures faites pendant le mouvement de la balle de golf. La fiabilité et la précision des mesures sont d'autant plus importantes que la pratique du golf nécessite une grande régularité et une grande précision dans le tir. Seul un dispositif très précis peut répondre aux exigences de l'utilisateur.There is therefore currently a need with regard to optimizing the measurements made during the movement of the golf ball. The reliability and accuracy of the measurements are all the more important as the practice of golf requires great regularity and great precision in shooting. Only a very precise device can meet the user's requirements.
La présente invention a pour but de remédier aux inconvénients des dispositifs existant actuellement.The object of the present invention is to remedy the drawbacks of the devices currently existing.
Elle a l'avantage, pour ce faire, d'éviter les erreurs de mesure dues aux vibrations et aux oscillations du câble de suspension. Les doublés de mesure sont ainsi supprimés.It has the advantage, to do this, of avoiding measurement errors due to vibrations and oscillations of the suspension cable. Double measurements are thus deleted.
Un autre avantage du dispositif, ici présenté, est que l'on distingue le comptage régulier du nombre de tours effectué par la tige de la mesure du décalage angulaire. On constate en pratique la suppression des mesures fausses et une grande fiabilité des deux paramètres importants pour le joueur compte tenu que leurs modes d'obtention sont indépendants.Another advantage of the device, presented here, is that a distinction is made between the regular counting of the number of turns made by the rod and the measurement of the angular offset. There is in practice the elimination of false measurements and a high reliability of the two important parameters for the player, given that their methods of obtaining are independent.
Le progrès technique constaté est important sur l'angle de décalage et la longueur du tir. D'autres buts et avantages apparaîtront' au cours de la description qui suit, cependant donnée qu'à titre indicatif.The technical progress observed is significant on the offset angle and the length of the shot. Other objects and advantages will become apparent from the following description, however given for information only.
La présente invention concerne un dispositif d'entraînement à la pratique du golf comportant : a) une potence de support d'une balle suspendue par un câble au niveau de l'extrémité de la branche horizontale de la potence, ledit câble étant raccordé à une première extrémité d'une tige d'axe horizontal par le biais de moyens de transmission de mouvement aptes à :The present invention relates to a golf training device comprising: a) a support bracket for a ball suspended by a cable at the end of the horizontal branch of the bracket, said cable being connected to a first end of a rod with a horizontal axis by means of motion transmission means suitable for:
- entraîner la tige en rotation propre par la rotation de la balle suivant l'axe horizontal, - entraîner la tige en translation suivant l'axe horizontal par le mouvement de décalage de la balle par rapport à un plan orthogonal à l'axe horizontal, b) des moyens de mesure du nombre de tours et du déplacement axial effectués par la tige et des moyens d'analyse des données de mesure pour calculer la longueur du tir et son décalage angulaire par rapport à une trajectoire de référence, caractérisé par le fait- drive the rod in proper rotation by the rotation of the ball along the horizontal axis, - drive the rod in translation along the horizontal axis by the movement of offset of the ball relative to a plane orthogonal to the horizontal axis, b) means for measuring the number of turns and the axial displacement effected by the rod and means for analyzing the measurement data to calculate the length of the shot and its angular offset with respect to a reference trajectory, characterized by the fact
- qu'il comprend un cylindre solidaire de la seconde extrémité de la tige " . que les moyens de mesure comprennent- It includes a cylinder secured to the second end of the rod ". that the measuring means include
- au moins un capteur magnétique de compte-tours coopérant avec une barrette métallique de compte-tours placée sur la périphérie de la tige de sorte à passer à chaque tour du cylindre en regard du capteur de compte-tours ; - au moins un capteur de magnétique latéral coopérant avec au moins deux repères métalliques latéraux placés à des endroits différents de la périphérie du cylindre ;- At least one magnetic tachometer sensor cooperating with a metal bar of tachometer placed on the periphery of the rod so as to pass each revolution of the cylinder opposite the tachometer sensor; - At least one lateral magnetic sensor cooperating with at least two lateral metal marks placed at different places on the periphery of the cylinder;
- un capteur de déplacement axial du cylindre pour la mesure de sa position axiale au passage des barrettes en regard du capteur latéral.- a sensor for axial displacement of the cylinder for measuring its axial position when the bars pass opposite the lateral sensor.
Ce dispositif peut se présenter sous les variantes introduites ci-après :This device can be presented in the variants introduced below:
• il comporte deux repères métalliques latéraux espacés de 180° sur la circonférence du cylindre.• it has two lateral metal marks spaced 180 ° on the circumference of the cylinder.
« les repères métalliques latéraux sont positionnés diamétralement opposés sur le cylindre et suivant la direction verticale lorsque la balle est au repos, et le capteur latéral est placé au regard du diamètre horizontal du cylindre, pour une mesure du capteur latéral au trois quarts du premier tour et quart du dernier tour."The lateral metal marks are positioned diametrically opposite on the cylinder and in the vertical direction when the bale is at rest, and the lateral sensor is placed with regard to the horizontal diameter of the cylinder, for a measurement of the lateral sensor three-quarters of the first turn and a quarter of the last round.
• le capteur de déplacement axial est un capteur magnétique placé en vis-à-vis du cylindre et dans son axe et il coopère avec un repère axial aimanté placé sur le cylindre.• the axial displacement sensor is a magnetic sensor placed opposite the cylinder and in its axis and it cooperates with a magnetic axial reference placed on the cylinder.
» les capteurs magnétiques sont des capteurs à effet Hall. » The magnetic sensors are Hall effect sensors.
• les moyens de transmission de mouvement sont constitués par :• the movement transmission means consist of:
- un arbre creux libre en rotation dans un palier de la potence suivant l'axe horizontal et dans lequel la tige est montée coulissante, et à l'extrémité duquel est monté pivotant un attache-câble recevant l'extrémité dudit câble,a hollow shaft free to rotate in a bearing of the bracket along the horizontal axis and in which the rod is slidably mounted, and at the end of which is pivotally mounted a cable tie receiving the end of said cable,
- une bielle montée pivotante sur l'attache-câble à un niveau différent du pivot de l'attache-câble sur l'arbre creux et solidaire d'autre part à la première extrémité de la tige.- a connecting rod pivotally mounted on the cable tie at a level different from the pivot of the cable tie on the hollow shaft and secured on the other hand to the first end of the rod.
L'invention concerne également un procédé pour le calcul de la longueur d'un tir et de son décalage angulaire par rapport à une trajectoire de référence, pour l'entraînement à la pratique du golf, apte à être mis en œuvre par le dispositif selon l'invention, dans lequel :The invention also relates to a method for calculating the length of a shot and its angular offset with respect to a reference trajectory, for training in the practice of golf, capable of being implemented by the device according to the invention, in which:
- on transforme le mouvement de décalage angulaire de la balle de golf par rapport à la trajectoire de référence en un mouvement de translation d'une tige d'axe horizontal, et à un cylindre solidaire de la tige - on transmet le mouvement de rotation d'axe horizontal de la balle au cylindre,- the angular offset movement of the golf ball with respect to the reference path is transformed into a translational movement of a rod with a horizontal axis, and to a cylinder secured to the rod - the rotational movement d is transmitted horizontal axis of the ball to the cylinder,
- on mesure le nombre de tours de rotation du cylindre et l'amplitude de son déplacement axial.- We measure the number of revolutions of the cylinder and the amplitude of its axial displacement.
Ce procédé se caractérise par le fait que :This process is characterized by the fact that:
- on détecte le passage du cylindre au trois quarts du premier tour et au quart du deuxième tour et on mesure son déplacement axial à ces instants,- the passage of the cylinder is detected three-quarters of the first turn and a quarter of the second round and its axial displacement is measured at these times,
- on détecte séparément l'accomplissement de chaque tour du cylindre pour les compter, - on calcule le décalage angulaire de la balle en fonction du déplacement axial du cylindre, et la longueur du tir en fonction du nombre de tours effectués par le cylindre. Les dessins ci-joints sont donnés à titre d'exemples indicatifs et non limitatifs. Ils représentent un mode de réalisation. Ils permettront de comprendre aisément l'invention. La figure 1 est une vue générale latérale en coupe du dispositif selon l'invention. La figure 2 est une coupe horizontale au niveau de la tige selon le mode particulier de réalisation de la figure 1.- the completion of each revolution of the cylinder is detected separately to count them, - the angular offset of the bullet is calculated as a function of the axial displacement of the cylinder, and the length of the shot as a function of the number of turns made by the cylinder. The attached drawings are given as indicative and non-limiting examples. They represent an embodiment. They will allow the invention to be easily understood. Figure 1 is a general side view in section of the device according to the invention. FIG. 2 is a horizontal section at the level of the rod according to the particular embodiment of FIG. 1.
Dans le dispositif 1 , selon l'invention, dont un mode de réalisation est présenté latéralement en coupe dans la figure 1 , une balle 18 de golf est suspendue à un câble 17. Pour réaliser la suspension de la balle 18, le dispositif 1 comprendra une potence 2, généralement montée sur un plateau recevant l'ensemble et servant au placement du joueur.In the device 1, according to the invention, an embodiment of which is presented laterally in section in FIG. 1, a golf ball 18 is suspended from a cable 17. To suspend the ball 18, the device 1 will include a bracket 2, generally mounted on a plate receiving the assembly and serving for the placement of the player.
Préférentiellement, la potence 2 a une partie sensiblement oblique et une branche horizontale sensiblement orientée suivant la direction de l'axe horizontal 21 repéré en trait mixte à la figure 1.Preferably, the bracket 2 has a substantially oblique portion and a horizontal branch substantially oriented in the direction of the horizontal axis 21 identified in phantom in Figure 1.
Pour assurer la liberté de mouvement de la balle 18 et la mesure du nombre de tours ainsi que du décalage angulaire par rapport à la trajectoire de référence, le montage de la balle 18 s'effectue par l'intermédiaire d'une tige 19 d'axe horizontal correspondant à l'axe horizontal 21, par le biais de moyens de transmission de mouvements.To ensure the freedom of movement of the ball 18 and the measurement of the number of revolutions as well as the angular offset with respect to the reference path, the mounting of the ball 18 is carried out by means of a rod 19 of horizontal axis corresponding to horizontal axis 21, by means of transmission of movements.
Tels que connus dans le document EP-A-0.682.958, les moyens de transmission de mouvement permettent de transformer le mouvement de la balle 18 en vue de son exploitation pour la mesure et le calcul des paramètres souhaités.As known in document EP-A-0.682.958, the movement transmission means make it possible to transform the movement of the ball 18 with a view to its exploitation for the measurement and calculation of the desired parameters.
A cet effet, les moyens de transmission entraînent la tige 19 en rotation propre par la rotation de la balle selon l'axe horizontal 21 lorsque le joueur la tape.To this end, the transmission means drive the rod 19 in proper rotation by the rotation of the ball along the horizontal axis 21 when the player taps it.
Par ailleurs, un entraînement axial, du type translation suivant l'axe horizontal 21 , est également effectué par la tige 19.Furthermore, an axial drive, of the translation type along the horizontal axis 21, is also carried out by the rod 19.
Ce mouvement axial est généré par le décalage de la balle 18, par rapport à un plan orthogonal à l'axe horizontal 21. A ce sujet, on a représenté en figure 1 la balle 18 en une position verticale vers le bas et en pointillé vers le haut, correspondant à une position obligée et systématiquement perpendiculaire à l'axe horizontal 21 lors de la rotation de la balle 18, quel que soit le déplacement axial de la tige 19 et du cylindre 7 au moment de la position horizontale du câble 17 et de la balle 18.. A titre indicatif, un mode de réalisation particulier des moyens de transmissions de mouvements est présenté ci-après. Dans ce cadre, et telle que représentée aux figures 1 et 2, la tige 19 est intégrée dans un arbre creux 4, lui-même libre en rotation dans un palier 3, solidaire de la potence 2, et orienté sensiblement suivant l'axe horizontal 21.This axial movement is generated by the offset of the ball 18, relative to a plane orthogonal to the horizontal axis 21. In this regard, there is shown in Figure 1 the ball 18 in a vertical position down and dotted towards the top, corresponding to a forced position and systematically perpendicular to the horizontal axis 21 during the rotation of the ball 18, whatever the axial displacement of the rod 19 and of the cylinder 7 at the time of the horizontal position of the cable 17 and of the ball 18. As a guide, a particular embodiment of the means for transmitting movements is presented below. In this context, and as shown in Figures 1 and 2, the rod 19 is integrated in a hollow shaft 4, itself free to rotate in a bearing 3, secured to the bracket 2, and oriented substantially along the horizontal axis 21.
A l'intérieur de l'arbre creux 4, la tige 19 est montée coulissante. Pour relier l'extrémité libre de la tige 19 et le câble 17 de suspension de la balleInside the hollow shaft 4, the rod 19 is slidably mounted. To connect the free end of the rod 19 and the ball suspension cable 17
18, un attache câble 5 est prévu, tel que représenté aux figures 1 et 2.18, a cable tie 5 is provided, as shown in FIGS. 1 and 2.
En se référant plus particulièrement à la figure 2, l'attache câble 5 comprend une partie extrême réglable apte à recevoir et maintenir le câble 17. Le réglage éventuel permet au joueur de positionner la balle 18 à la hauteur désirée par rapport au tapis. A son autre extrémité, l'attache câble 5 est monté pivotant sur l'arbre creux 4.Referring more particularly to Figure 2, the cable tie 5 includes an adjustable end portion adapted to receive and hold the cable 17. The possible adjustment allows the player to position the ball 18 at the desired height relative to the mat. At its other end, the cable tie 5 is pivotally mounted on the hollow shaft 4.
L'axe de ce pivot est montré au repère 22 en figure 2.The axis of this pivot is shown in reference 22 in FIG. 2.
D'autre part, l'attache câble reçoit une bielle 6 montée pivotante par rapport à l'attache câble 5 suivant un axe différent de l'axe 22, mais de même direction.On the other hand, the cable tie receives a connecting rod 6 pivotally mounted relative to the cable tie 5 along an axis different from the axis 22, but in the same direction.
De cette façon, le pivot de l'attache câble 5 sur l'arbre creux 4, et celui de la bielle sur l'attache câble 5 se situent à des niveaux différents.In this way, the pivot of the cable tie 5 on the hollow shaft 4, and that of the connecting rod on the cable tie 5 are located at different levels.
On forme par ce biais un système bielle-manivelle apte à transformer le mouvement de rotation de l'attache câble 5 autour de l'axe 22, en un mouvement de translation horizontale d'axe 21 de la tige 19.This forms a connecting rod-crank system capable of transforming the rotational movement of the cable tie 5 around the axis 22, into a horizontal translational movement of the axis 21 of the rod 19.
De façon préférée, pour réaliser la fixation de cet ensemble, l'arbre creux se termine en forme de fourche pour la réception de l'extrémité de l'attache câble 5.Preferably, in order to secure this assembly, the hollow shaft ends in the form of a fork for receiving the end of the cable tie 5.
A ce sujet, on mesurera essentiellement le nombre de tours effectué par la tige 19 pour en déduire la longueur du tir de la balle 18. Par ailleurs, on mesure le déplacement axial de la tige 19 pour déterminer le décalage angulaire de la trajectoire de la balle 18 par rapport à la trajectoire de référence. A cet effet, des moyens de mesure particuliers sont prévus selon l'invention.In this regard, we will essentially measure the number of turns made by the rod 19 to deduce the length of the shot from the bullet 18. Furthermore, we measure the axial displacement of the rod 19 to determine the angular offset of the trajectory of the ball 18 relative to the reference trajectory. To this end, special measurement means are provided according to the invention.
Les mesures sont avantageusement opérées au niveau de l'autre extrémité de la tige 19 (celle opposée à la liaison avec le câble 17).The measurements are advantageously carried out at the other end of the rod 19 (the one opposite to the connection with the cable 17).
Dans ce cadre, la tige 19 comprend avantageusement à cet endroit un cylindre 7 cinematiquement solidaire de la tige 19 et d'un diamètre plus important, préférentiellement en matière non métallique et neutre magnétiquement, le cylindre est apte à recevoir une partie des organes nécessaires sur mesures.In this context, the rod 19 advantageously comprises at this point a cylinder 7 kinematically integral with the rod 19 and of a larger diameter, preferably made of non-metallic and magnetically neutral material, the cylinder is capable of receiving a part of the necessary organs on measures.
Il est évident que les mesures de rotation et de déplacement axial au niveau du cylindre 7 permettent de déterminer les mouvements de la tige 19 qui incorpore le cylindreIt is obvious that the measurements of rotation and axial displacement at the level of the cylinder 7 make it possible to determine the movements of the rod 19 which incorporates the cylinder
7. Comme illustrés en figure 2, les moyens de mesure comprennent au moins un capteur magnétique 14 de compte-tours, coopérant avec une barrette métallique 9 placée sur la périphérie du cylindre 7 de sorte à passer à chaque tour du cylindre 7 en regard du capteur de compte-tours 14.7. As illustrated in FIG. 2, the measurement means comprise at least one magnetic sensor 14 of tachometer, cooperating with a metal bar 9 placed on the periphery of the cylinder 7 so as to pass each revolution of the cylinder 7 opposite the tachometer sensor 14.
Par ailleurs, les moyens de mesure comprennent au moins un capteur magnétique latéral 12 coopérant avec au moins deux repères métalliques latéraux 8, 8bis placés à des endroits différents de la périphérie du cylindre 7.Furthermore, the measurement means comprise at least one lateral magnetic sensor 12 cooperating with at least two lateral metal marks 8, 8bis placed at different locations on the periphery of the cylinder 7.
De cette façon, les repères métalliques 8, 8bis passent successivement en regard du capteur latéral 12 à chaque tour du cylindre 7.In this way, the metal pins 8, 8bis pass successively opposite the lateral sensor 12 at each revolution of the cylinder 7.
En outre, un capteur de déplacement axial repéré 13 à la figure 2 permet la mesure de la position axiale du cylindre 7 à des instants déterminés. Ces instants déterminés se situent lorsque le capteur magnétique latéral 12 est activé, c'est-à-dire lorsque les repères métalliques 8, 8bis passent en vis-à-vis.In addition, an axial displacement sensor identified 13 in FIG. 2 allows the axial position of the cylinder 7 to be measured at determined times. These determined times are located when the lateral magnetic sensor 12 is activated, that is to say when the metal pins 8, 8a pass opposite.
Par ailleurs, un repère axial 10 sera constitué dans l'axe horizontal 21 en regard du capteur axial 13 pour réaliser la détection du déplacement en translation de la tige 19 et du cylindre 7. De façon préférée, les moyens de mesure comprennent deux repères latéraux 8,Furthermore, an axial mark 10 will be formed in the horizontal axis 21 opposite the axial sensor 13 to carry out the detection of the translational displacement of the rod 19 and of the cylinder 7. Preferably, the measurement means comprise two lateral marks 8
8bis espacés de 180° sur la circonférence du cylindre 7.8bis spaced 180 ° around the circumference of cylinder 7.
Une détection est ainsi opérée au trois quarts du premier tour et au quart du deuxième tour.Detection is thus carried out three quarters of the first round and one quarter of the second round.
Qui plus est, on positionnera préférentiellement les repères latéraux 8, δbis de sorte qu'ils définissent un diamètre vertical du cylindre 7, lorsque la balle 18 est au repos. Dans ce cadre, le capteur latéral 12 sera positionné pour être placé suivant la direction d'un diamètre horizontal du cylindre 7 lorsque la balle est au repos.What is more, the lateral marks 8, δbis will preferably be positioned so that they define a vertical diameter of the cylinder 7, when the ball 18 is at rest. In this context, the lateral sensor 12 will be positioned to be placed in the direction of a horizontal diameter of the cylinder 7 when the ball is at rest.
De cette façon, le capteur latéral 12 effectuera une détection au trois quarts du premier tour et au quart du deuxième tour. En ce qui concerne la mesure du déplacement axial de la tige 19 et du cylindre 7, un capteur magnétique 13 sera préférentiellement utilisé avec un repère axial 10 aimanté.In this way, the lateral sensor 12 will perform a detection at three quarters of the first round and one quarter of the second round. As regards the measurement of the axial displacement of the rod 19 and of the cylinder 7, a magnetic sensor 13 will preferably be used with an axial reference mark 10 magnetized.
Toujours à titre préféré, les capteurs magnétiques 12, 13 et 14 seront des capteurs à effet Hall donc à technologie inductive.Also by way of preference, the magnetic sensors 12, 13 and 14 will be Hall effect sensors therefore with inductive technology.
Les capteurs 12 et 14 seront couplés à des aimants respectivement 15 et 16 et positionnés sur un support 11 , solidaire de la potence 2.The sensors 12 and 14 will be coupled to magnets 15 and 16 respectively and positioned on a support 11, integral with the bracket 2.
Le calcul de longueur d'un tir et de son décalage angulaire par rapport à une trajectoire de référence pourra être opéré par la mise en œuvre du dispositif ainsi décrit et au regard du procédé ci-après présenté.The calculation of the length of a shot and of its angular offset with respect to a reference trajectory can be operated by the implementation of the device thus described and with regard to the method presented below.
Lorsque l'utilisateur frappe dans la balle 18, on détecte le passage des repères 8 et 8bis du cylindre 7, au trois quarts du premier tour et au premier quart du deuxième tour. Cette opération est effectuée par un positionnement judicieux du capteur latéral 12 et des repères latéraux 8 et δbis. A ces instants, on mesure le déplacement de la tige 19 et du cylindre 7 par le biais du capteur axial 13.When the user hits the ball 18, the passage of the marks 8 and 8bis of the cylinder 7 is detected, three-quarters of the first round and the first quarter of the second round. This operation is carried out by judicious positioning of the lateral sensor 12 and the lateral pins 8 and δbis. At these times, the displacement of the rod 19 and of the cylinder 7 is measured by means of the axial sensor 13.
Le fait de procéder à la mesure du décalage angulaire à ces instants est particulièrement avantageux, puisque c'est au début du mouvement de la balle 18 que le décalage angulaire est maximal. Par ailleurs, c'est au trois quarts du premier tour et au premier quart du deuxième tour, que l'on constate le décalage angulaire maximal.The fact of measuring the angular offset at these times is particularly advantageous, since it is at the start of the movement of the ball 18 that the angular offset is maximum. Furthermore, it is three-quarters of the first round and the first quarter of the second round that we observe the maximum angular offset.
De façon préférentiellement indépendante et simultanée, on compte le nombre de tours réalisé par le cylindre 7.Preferably independently and simultaneously, the number of turns performed by the cylinder 7 is counted.
Pour ce faire, on détecte par le capteur de compte-tours 14 le passage à chaque tour de la barrette métallique 9.To do this, the tachometer sensor 14 detects the passage at each revolution of the metal bar 9.
De façon préférée, la barrette métallique 9 est décalée angulairement par rapport aux repères latéraux 8, δbis.Preferably, the metal bar 9 is angularly offset with respect to the lateral pins 8, δbis.
De cette façon, les mesures de détection opérées par les capteurs ne seront pas simultanément gênées, par exemple en cas de dysfonctionnement ou oscillation du câble de suspension de la balle 18.In this way, the detection measurements carried out by the sensors will not be hampered simultaneously, for example in the event of a malfunction or oscillation of the ball suspension cable 18.
On obtient des mesures totalement indépendantes.Completely independent measurements are obtained.
Les données de mesure ainsi réunies concernant le nombre de tours effectué par le cylindre 7 et son déplacement angulaire maximal au début du tir permettent le calcul du décalage angulaire de la balle 18 et la longueur du tir. Le procédé de calcul qui est apte à être mis en œuvre par le dispositif, suivant des paramètres précis, permet de programmer un microprocesseur et d'obtenir l'affichage, sur un écran, du résultat d'un tir, c'est-à-dire le décalage angulaire et la distance en fonction du club utilisé et du niveau habituel du joueur,. The measurement data thus gathered concerning the number of turns performed by the cylinder 7 and its maximum angular displacement at the start of the shot allow the angular offset of the bullet 18 and the length of the shot to be calculated. The calculation method which is capable of being implemented by the device, according to precise parameters, makes it possible to program a microprocessor and to obtain the display, on a screen, of the result of a shot, that is to say -to say the angular offset and the distance according to the club used and the usual level of the player ,.
REFERENCESREFERENCES
1. Dispositif1. Device
2. Potence 3. Palier2. Stem 3. Bearing
4. Arbre creux4. Hollow shaft
5. Attache câble5. Cable tie
6. Bielle6. Connecting rod
7. Cylindre 8, δbis. Repères latéraux métalliques7. Cylinder 8, δbis. Metal side marks
9. Barrette métallique9. Metal bar
10. Repère axial aimanté10. Magnetic axial mark
11. Support11. Support
12. Capteur latéral de mesure angulaire 13. Capteur axial de mesure angulaire12. Lateral angle measurement sensor 13. Axial angle measurement sensor
14. Capteur de compte-tours 15,16. Aimant14. Tachometer sensor 15.16. Magnet
17. Câble17. Cable
18. Balle 19. Tige18. Ball 19. Rod
21. Axe horizontal21. Horizontal axis
22. Axe de pivot 22. Pivot axis

Claims

REVENDICATIONS
1. Dispositif (1) d'entraînement à la pratique du golf comportant : a) une potence (2) de support (11) d'une balle (18) suspendue par un câble (17) au niveau de l'extrémité de la branche horizontale de la potence (2), ledit câble (17) étant raccordé à une première extrémité d'une tige (19) d'axe horizontal1. A device (1) for training in the practice of golf comprising: a) a bracket (2) for supporting (11) a ball (18) suspended by a cable (17) at the end of the horizontal arm of the bracket (2), said cable (17) being connected to a first end of a rod (19) with a horizontal axis
(21 ) par le biais de moyens de transmission de mouvement aptes à :(21) by means of movement transmission capable of:
- entraîner la tige (19) en rotation propre par la rotation de la balle (18) suivant l'axe horizontal (21),- driving the rod (19) in proper rotation by the rotation of the ball (18) along the horizontal axis (21),
- entraîner la tige (19) en translation suivant l'axe horizontal (21 ) par le mouvement de décalage de la balle (18) par rapport à un plan orthogonal à l'axe horizontal (21), b) des moyens de mesure du nombre de tours et du déplacement axial effectués par la tige (19) et des moyens d'analyse des données de mesure pour calculer la longueur du tir et son décalage angulaire par rapport à une trajectoire de référence, caractérisé par le fait- driving the rod (19) in translation along the horizontal axis (21) by the ball offset movement (18) relative to a plane orthogonal to the horizontal axis (21), b) means for measuring the number of turns and axial displacement made by the rod (19) and means for analyzing the measurement data to calculate the length of the shot and its angular offset with respect to a reference trajectory, characterized by the fact
» qu'il comprend un cylindre (7) solidaire de la seconde extrémité de la tige (19) »That it comprises a cylinder (7) integral with the second end of the rod (19)
• que les moyens de mesure comprennent au moins un capteur magnétique de compte-tours (14) coopérant avec une barrette métallique (9) de compte-tours placée sur la périphérie du cylindre (7) de sorte à passer à chaque tour du cylindre (7) en regard du capteur de compte-tours (14) ;• that the measuring means comprise at least one magnetic tachometer sensor (14) cooperating with a metal bar (9) of tachometer placed on the periphery of the cylinder (7) so as to pass each revolution of the cylinder ( 7) opposite the tachometer sensor (14);
- au moins un capteur magnétique latéral (12) coopérant avec au moins deux repères métalliques latéraux (8, δbis) placés à des endroits différents de la périphérie du cylindre (7) ;- At least one lateral magnetic sensor (12) cooperating with at least two lateral metal marks (8, δbis) placed at different places on the periphery of the cylinder (7);
- un capteur de déplacement axial (13) du cylindre (7) pour la mesure de sa position axiale au passage des repères métalliques latéraux (8, δbis) en regard du capteur latéral (12).- an axial displacement sensor (13) of the cylinder (7) for measuring its axial position when the lateral metal marks (8, δbis) pass opposite the lateral sensor (12).
2. Dispositif (1 ), selon la revendication 1 , caractérisé par le fait qu'il comporte deux repères latéraux (8, δbis) espacés de 180° sur la circonférence du cylindre (7).2. Device (1) according to claim 1, characterized in that it comprises two lateral marks (8, δbis) spaced 180 ° on the circumference of the cylinder (7).
3.Dispositif (1), selon la revendication 2, caractérisé par le fait que les repères latéraux (8, 8bis) sont positionnés diamétralement opposés sur le cylindre (7) et suivant la direction verticale lorsque la balle (1δ) est au repos, et que le capteur latéral (12) est placé au regard du diamètre horizontal du cylindre (7), pour une mesure du capteur latéral (12) au trois quarts du premier tour et au quart du deuxième tour. 3. Device (1) according to claim 2, characterized in that the lateral marks (8, 8bis) are positioned diametrically opposite on the cylinder (7) and in the vertical direction when the ball (1δ) is at rest, and that the lateral sensor (12) is placed facing the horizontal diameter of the cylinder (7), for a measurement of the lateral sensor (12) three quarters of the first turn and a quarter of the second turn.
4. Dispositif (1), selon l'une quelconque des revendications 1 à 3, caractérisé par le fait que le capteur de déplacement axial (13) est un capteur magnétique placé en vis-à- vis du cylindre (7) et dans son axe et qu'il coopère avec un repère axial (10) aimanté placé sur le cylindre (7).4. Device (1), according to any one of claims 1 to 3, characterized in that the axial displacement sensor (13) is a magnetic sensor placed opposite the cylinder (7) and in its axis and that it cooperates with an axial reference mark (10) magnetized placed on the cylinder (7).
5. Dispositif (1), selon la revendication 4, caractérisé par le fait que les capteurs magnétiques sont des capteurs à effet Hall.5. Device (1) according to claim 4, characterized in that the magnetic sensors are Hall effect sensors.
6. Dispositif, selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que les moyens de transmission de mouvement sont constitués par : un arbre creux libre (4) en rotation dans un palier (3) de la potence (2) suivant l'axe horizontal (21) et dans lequel la tige (19) est montée coulissante, et à l'extrémité duquel est monté pivotant un attache-câble (5) recevant l'extrémité dudit câble (17), une bielle (6) montée pivotante sur l'attache-câble (5) à un niveau différent du pivot de l'attache-câble (5) sur l'arbre creux (4) et reliée d'autre part à la première extrémité de la tige (19).6. Device according to any one of claims 1 to 5, characterized in that the movement transmission means consist of: a free hollow shaft (4) rotating in a bearing (3) of the bracket (2 ) along the horizontal axis (21) and in which the rod (19) is slidably mounted, and at the end of which is pivotally mounted a cable tie (5) receiving the end of said cable (17), a connecting rod ( 6) pivotally mounted on the cable tie (5) at a different level from the pivot of the cable tie (5) on the hollow shaft (4) and connected on the other hand to the first end of the rod ( 19).
7. Procédé pour le calcul de la longueur d'un tir et de son décalage angulaire par rapport à une trajectoire de référence, pour l'entraînement à la pratique du golf, apte à être mis en œuvre par le dispositif selon la revendication 3 en combinaison avec l'une quelconque des revendications 4 à 6, dans lequel :7. Method for calculating the length of a shot and its angular offset with respect to a reference trajectory, for training in the practice of golf, capable of being implemented by the device according to claim 3 in combination with any one of claims 4 to 6, in which:
- on transforme le mouvement de décalage angulaire de la balle (18) de golf par rapport à la trajectoire de référence en un mouvement de translation d'une tige (19) d'axe horizontal (21), et à un cylindre (7) solidaire de la tige (19)- The angular offset movement of the golf ball (18) relative to the reference path is transformed into a translational movement of a rod (19) with a horizontal axis (21), and to a cylinder (7) integral with the rod (19)
- on transmet le mouvement de rotation d'axe horizontal (21) de la balle (18) au cylindre (7),- the horizontal axis rotation movement (21) of the ball (18) is transmitted to the cylinder (7),
- on mesure le nombre de tours de rotation du cylindre (7) et l'amplitude de son déplacement axial, caractérisé par le fait que : - on détecte le passage du cylindre (7) au trois quarts du premier tour et quart du deuxième tour et on mesure son déplacement axial à ces instants, on détecte séparément l'accomplissement de chaque tour du cylindre (7) pour les compter, on calcule le décalage angulaire de la balle (18) en fonction du déplacement axial du cylindre (7), et la longueur du tir en fonction du nombre de tours effectués par le cylindre (7). - the number of revolutions of the cylinder (7) and the amplitude of its axial displacement are measured, characterized by the fact that: - the passage of the cylinder (7) is detected three-quarters of the first turn and a quarter of the second round and its axial displacement is measured at these times, the completion of each revolution of the cylinder (7) is separately detected to count them, the angular offset of the ball (18) is calculated as a function of the axial displacement of the cylinder (7), and the length of the shot as a function of the number of turns made by the cylinder (7).
EP01956600A 2000-07-27 2001-07-18 Device for golf training practice and related method Expired - Lifetime EP1303335B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0009817A FR2812208B1 (en) 2000-07-27 2000-07-27 GOLF PRACTICE TRAINING DEVICE AND RELATED METHOD
FR0009817 2000-07-27
PCT/FR2001/002328 WO2002009826A1 (en) 2000-07-27 2001-07-18 Device for golf training practice and related method

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EP1303335A1 true EP1303335A1 (en) 2003-04-23
EP1303335B1 EP1303335B1 (en) 2007-06-06

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AT (1) ATE363933T1 (en)
AU (1) AU2001278532A1 (en)
CA (1) CA2414962A1 (en)
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ES2304227B1 (en) * 2008-01-21 2009-08-06 Ricardo Mela Molina TRAINING DEVICE FOR THE PRACTICE OF THE GOLF GAME.
CA3178616A1 (en) 2020-05-22 2021-11-25 Dean Holmes A game apparatus
KR102579614B1 (en) * 2021-11-12 2023-09-15 이엔콤 주식회사 Golf swing training apparatus

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US3743296A (en) * 1971-02-16 1973-07-03 Lectron Ind Inc Golf practicing apparatus
GB8321410D0 (en) * 1983-08-09 1983-09-07 Way D R Golf practicising devices
US5121923A (en) * 1991-10-28 1992-06-16 Allura John D Golf training device
US5255920A (en) * 1992-07-24 1993-10-26 Mangeri John J Training device for golfers
FR2720006B1 (en) 1994-05-17 1996-06-28 Raymond Denance Training device for golfers with analysis of each strike.

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Title
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AU2001278532A1 (en) 2002-02-13
FR2812208B1 (en) 2002-12-20
ATE363933T1 (en) 2007-06-15
DE60128806D1 (en) 2007-07-19
FR2812208A1 (en) 2002-02-01
DE60128806T2 (en) 2008-03-06
CA2414962A1 (en) 2002-02-07
EP1303335B1 (en) 2007-06-06

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