TECHNICAL FIELD OF INVENTION
This disclosure generally relates to sports training devices, and more specifically to a table tennis training apparatus and method of use thereof, wherein guide plate(s) attachments to a player's torso facilitate utilization of the correct technique/stroke in the play of table tennis, thereby improving the forehand, backhand and various other strokes of the player.
BACKGROUND OF INVENTION
Training devices have been developed for sports such as tennis and golf to improve the player's game and technique. But none of these devices can be effectively applied to the game of table tennis. In table tennis the trajectory of the arm motion and the paddle angle determines the ability of the player to properly return the ball on to the table within a very short period of time. Since the ball is usually advancing toward the player with a very high rotational and/or translational velocity, improper paddle stroke angle and arm motion can have the spinning ball bounce off in an undesired direction, off the table tennis board.
Therefore there is a need for a training apparatus that can properly guide a table tennis player to the proper arm motion and paddle stroke angle such that the fast/slow approaching spinning ball can be effectively returned every time within the confines of the table tennis board.
SUMMARY OF THE INVENTION
In accordance with one embodiment, a training apparatus for a table tennis player is provided. The training apparatus comprises of a first support configured to be affixed to the torso of the table tennis player. A second support configured to be moveably attached to the first support. A third support configured to be moveably attached to the second support. A guide plane configured to be affixed to the third support.
Key features of the training apparatus adjustment lies in the special universal joint design that allows adjustment in 6 degrees of freedom of the connecting supports and hence the guide plate.
Accordingly, a key feature and advantage of the present invention is its ability to constrain a table tennis player's hand motion trajectory to stroke and return the ball within the confines of the table tennis board, to the opposing player.
Further features and advantages will appear more clearly on a reading of the following detailed description of the preferred embodiments, which is given by way of non-limiting example only and with reference to the accompanying drawings.
BRIEF DESCRIPTION OF DRAWING FIGURES
The present invention will now be described, by way of example with reference to the accompanying drawing figures, in which:
FIG. 1 is a perspective view of a table tennis player equipped with the table tennis training apparatus according to a preferred embodiment of the present invention shown at the start of a player's forehand stroke;
FIG. 2 is a perspective view of the table tennis training apparatus in one embodiment;
FIG. 3 is a perspective view of one of the first, second and the third supports of the table tennis training apparatus illustrating the wide range of possible adjustments;
FIG. 4 is a perspective view of an embodiment of a universal joint assembly design illustrating the mechanism of the universal joint, enabling the range of possible support adjustments shown in FIG. 3;
FIG. 5 is a sectional view of an embodiment of a universal joint design to illustrate its assembly and operation;
FIG. 6 is a sectional view of one of the components of the universal joint design to illustrate the gripping mechanism of the universal joint on to the mounting support; and
FIG. 7 is a top view of the support holder of the first support designed for an easy and quick attachment/detachment of the first support. The support holder is affixed to a belt strapped around the upper torso of the table tennis player.
Reference will now be made in detail to the present preferred embodiments of the table tennis training apparatus, examples of which are illustrated in the accompanying drawing figures.
DETAILED DESCRIPTION
In describing the preferred embodiments of the present invention, as illustrated in FIGS. 1-7, specific terminology is employed for the sake of clarity. The invention, however, is not intended to be limited to the specific terminology so selected, and it is to be understood that each specific element includes all technical equivalents that operate in a similar manner to accomplish similar functions.
Referring now to FIGS. 1-2, the present invention in one embodiment comprises a table tennis training apparatus 300 and associated method of use thereof, wherein table tennis training apparatus 300 preferably comprises the guiding plate 360 affixed to the third support 350. The third support 350 is in turn mounted movably to the second support 340, via a second universal joint 371. The second support 340 is in turn mounted movably to the first support 330, via a first universal joint 370. The first support 330 is affixed vertically to the player's torso 100 as shown with the aid of two belts 310 and 311, and support holder 320 and 321 respectively. The third support 350 presents the plate 360 in the desired position and angle to aid the table tennis player 10 in enabling the proper arm 110 motion to stroke the ball 210 with the table tennis paddle 200 in the desired angle and direction. It may be noted that the supports described here may be constructed from materials such as metal, plastic, wood, composite, etc. The support section may be square, circular or any other geometry to construct a light and stiff structure. And the support section may be solid or hollow or any other combination of hollow and solid geometrical shape/structure. The first and the second universal joints may be identical or of similar designs.
FIG. 3 illustrates the range of motion achievable by the guiding plate 360 affixed to the third support 350. The third support 350 is movably mounted to the second support 340 via the second universal joint 371. The second support 340 is moveably mounted to the first support 330 via the first universal joint 370. The first support 330 may be affixed or movably mounted to the table tennis player 10 via the support holders 320 and 321 attached to the belts 310 and 311 respectively, such that any translational or rotational motion of the first support 330 is constrained with respect to the player's torso 100. The first and the second universal joints 370 and 371 may be configured to allow the third and second supports to move rotationally and translationally with respect to the second and first support respectfully. The support holders 320 and 321 are designed to allow for a quick and easy attachment of the first support 330 to the belts 310 and 311 and allow the support 330 to move rotationally and translationally with respect to the torso attachment belts for adjustments.
FIG. 4 illustrates the universal joint design 370 connecting the first and the second supports 330 and 340 respectively and the translational and rotational motion that are achievable to provide the 6 degrees of freedom.
FIG. 5 is a section view of a non-limiting example of a universal joint configuration that may be employed for the first 370/372 and the second 371/373 universal joints. It is comprised of two clips 400 and 401, placed one on the other in the manner shown and constrained by a wing screw 402 on one side and a nut 403 on the other side. The serrated mating surfaces 440 of the clips 400 and 401 prevent them from rotating on to each other when the wing nut 402 is tightened on to the nut 403. The tightening of the wing nut 402 on to the nut 403 also initiates the opening 500 and 501 of the clips 400 and 401 respectively to constrict, thereby tightening on to the connecting supports, thus preventing the supports from any translational or rotational movement. The nut 403 may be welded to the clip 401 to prevent it from rotating and/or disengaging itself. It may be noted that the universal joints described here may be constructed from materials such as metal, plastic, composite, etc.
FIG. 6 is a sectional view of the clip 400, illustrating the mechanism by which the opening 500 constricts upon tightening the wing screw 402 onto the nut 403. This is accomplished by allowing a small gap 430 between the members 420 and 421 of the clip 400/401. As the end of the member 420 rests on the inclined plane of the end of the member 421, closure of the gap 430 between the members 420 and 421, forces them to slide with respect to each other as indicated by the arrows shown. This additional sliding movement adds to the constriction of the opening 500 along with the gap 430 reduction. To help facilitate the sliding motion of the members 420 and 421, the aperture 411 in the member 421, with the incline end, is elongated, in the direction of motion, as shown. Whereas the aperture 410 in the member 420 may be retained as circular.
FIG. 7 illustrates an embodiment of support holders 320/321 of the support 330. The support holders 320/321 are affixed to the belts 310/311 respectively. The belts 310/311 are a component of the training apparatus 300, affixing the training apparatus 300 to the player's upper torso 100.
The foregoing description and drawings comprise illustrative embodiments of the present invention. Having thus described the exemplary embodiments of the present invention, it should be noted by those skilled in the art that the within disclosures are exemplary only, and that various other alternatives, adaptations, and modifications may be made within the scope of the present invention. Merely listing or numbering the steps of a method in a certain order does not constitute any limitation on the order of the steps of that method. Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains, having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Although specific terms may be employed herein, they are used in a generic and descriptive sense only and not for the purposes of limitation. Accordingly, the present invention is not limited to the specific embodiments illustrated herein, but is limited only by the following claims.
Patent Grant
10981043
