EP2716333A1 - Badminton racket - Google Patents

Badminton racket Download PDF

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Publication number
EP2716333A1
EP2716333A1 EP13187210.3A EP13187210A EP2716333A1 EP 2716333 A1 EP2716333 A1 EP 2716333A1 EP 13187210 A EP13187210 A EP 13187210A EP 2716333 A1 EP2716333 A1 EP 2716333A1
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EP
European Patent Office
Prior art keywords
rod
racket
racket according
frame
parallel
Prior art date
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Granted
Application number
EP13187210.3A
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German (de)
French (fr)
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EP2716333B1 (en
Inventor
Catherine Mace
Nicolas Sene
Grégoire Laverty
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Babolat VS SA
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Babolat VS SA
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Publication of EP2716333A1 publication Critical patent/EP2716333A1/en
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/50—Details or accessories of golf clubs, bats, rackets or the like with through-holes
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/52—Details or accessories of golf clubs, bats, rackets or the like with slits
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B67/00—Sporting games or accessories therefor, not provided for in groups A63B1/00 - A63B65/00
    • A63B67/18—Badminton or similar games with feathered missiles
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/04—Badminton
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/022—String guides on frames, e.g. grommets
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/0081—Substantially flexible shafts; Hinged shafts

Definitions

  • the invention relates to a badminton racket.
  • the flexibility of a rod makes it possible to confer some power on a racket, that is to say to allow it to impact a steering wheel to transmit kinetic energy relatively important.
  • the rigidity of a rod allows a precise strike, especially when finalizing a shot.
  • Some snowshoes use elongated oval section stems in a direction parallel to the racquet's sieve plane. This geometry is supposed to improve the stability of the racket in torsion but tends to decrease its rigidity in flexion in a direction perpendicular to the screen, that is to say in the direction along which the sieve strikes the steering wheel. This induces a lack of accuracy of the racket.
  • the invention intends to remedy more particularly by proposing a new racket which makes it possible to obtain improved power and typing accuracy compared with rackets of the state of the art.
  • the invention relates to a badminton racket which comprises a frame, a handle and a rod connecting this frame to this handle, this racket defining a first direction parallel to a longitudinal axis of the rod, a second direction perpendicular to the first direction and parallel to a plane according to which extends a sieve mounted in the frame and a third direction perpendicular to the first and second directions and the plane of the sieve.
  • the rod has a flexural rigidity in the third direction which is greater than its bending stiffness in the second direction.
  • the differentiated flexural rigidity of the rod, in the second direction and in the third direction allows, when the user arms his blow, to bend the rod, elastically, and to store the rod. energy in the rod in the second direction. This energy is transmitted to the wheel when the shot is made by moving the racquet overall in the third direction.
  • the power of the racket is improved by the relatively low rigidity of the bending rod according to the second direction.
  • the accuracy of the racket is not degraded because the bending stiffness in the third direction is relatively high.
  • the racket 1 shown in figures 1 and 2 comprises a frame 2 in the form of a closed loop and a handle 4 intended to be taken in hand by a user.
  • a rod 6 connects the handle 4 to the frame 2 and extends along a longitudinal axis X 1 which constitutes a longitudinal axis of the racket 1.
  • a sieve 8 is mounted in the frame 2. This sieve 8 is formed of longitudinal ropes 82 which extend parallel to the axis X 1 and the transverse ropes 84 which extend perpendicularly to this axis.
  • the ropes 82 and 84 pass through eyelets 22 disposed in orifices 24 which pass through the frame 2 from one side to the other, from its outer surface to its inner surface.
  • X 2 denotes an axis contained in the plane P 8 perpendicular to the axis X 1 and passing through the geometric center C 8 of the sieve 8.
  • the axis X 2 is a transverse axis for the racket 1.
  • X 3 denotes an axis perpendicular to the plane P 8 , thus to the axes X 1 and X 2 and passing through the center C 8 .
  • the X axis 3 is represented at figure 1 only on the geometric mark drawn next to the racket. It can be called a frontal axis, in that it defines the normal direction of striking of the racket 1.
  • D 1 denotes respectively a direction parallel to the axis X 1 and from the handle 4 to the frame 2, D 2 a direction parallel to the axis X 2 and going from the left to the right to the figure 1 and D 3 a direction parallel to the axis X 3 and going from the top down to the figure 1 .
  • the direction D 2 is a lateral direction for the racket 1
  • the direction D 3 is a frontal direction.
  • the rod 6 comprises an outer radial surface 62 circular and centered on the axis X 1 .
  • the circular nature of the surface 62 gives a satisfactory aesthetic appearance to the racket 1, regardless of the viewing angle.
  • the rod 6 is hollow and V 6 is noted its interior volume which is oval section, with its largest dimension aligned on the axis X 2 .
  • the constituent material of the rod 6 comprises a polymer resin in which reinforcement fibers, for example carbon, are embedded. This material is homogeneous around the axis X 1 .
  • the rod 6 is tubular and its thickness varies around the axis X 1 . More specifically, given the geometry of the surface 62 and the volume V 6 , the wall thickness e 2 of the rod 6 in the direction D 2 is smaller than the thickness e 3 of the wall of this rod in the direction D 3 , Thus, the rod 6 has a flexural rigidity differentiated along the directions D 2 and D 3 , More specifically, considering that the rod 6 is embedded in the handle 4, a bending movement of the rod 6 in the direction D 2 can be considered as a rotational movement about an axis X ' 3 parallel to the axis X 3 and passing through the point of insertion of the rod 6 in the handle 4. Similarly, a bending movement in the direction D 3 can be considered as a rotation about an axis X ' 2 parallel to the axis X 2 and passing through a point of embedding of the rod 6 in the handle 4.
  • the outer radial surface 62 of the rod 6 is of non-circular section, in this case oval, with its largest dimension oriented in the direction D 3.
  • the volume V 6 is, for its part, circular section.
  • the wall thickness e 2 of the rod 6 in the direction D 2 is smaller than the wall thickness e 3 in the direction D 3.
  • the outer radial surface 62 of the rod 6 is of circular section as the volume V 6.
  • Two reinforcements 64 are integrated in the rod 6 and extend in the vicinity of the surface 62, c that is to say on the outside thereof, being aligned in the direction D 3.
  • These reinforcements 64 may be made by strips containing carbon fibers, optionally impregnated with resin, with a variable carbon fiber density according to the desired difference in rigidity.
  • the elements 64 can locally reinforce the bending stiffness of the rod 6, in the direction D 3 since they are aligned in this direction.
  • the reinforcements 64 have little effect on the bending behavior of the rod 6 because they are subjected to displacements, and therefore to stresses inferior to those to which they are subjected during flexion along D 3 .
  • the volume D 6 of the first embodiment may be of other than oval section, for example polygonal.
  • the surface 62 may be of section other than oval to the figure 3 , for example polygonal.
  • the reinforcements 64 may also be affixed inside the rod.

Abstract

The racket (1) has a frame (2), a handle (4) and a shaft (6), where the shaft connects the frame to the handle and the racket defines a first direction (D1) parallel to a longitudinal axis (X1) of the shaft and a second direction (D2) perpendicular to the first direction and parallel to a plane (P8) in which strings (8) mounted in the frame are extended. The racket defines a third direction (D3) perpendicular to the first and second directions and to the plane. Bending rigidity of the shaft in the third direction is greater than another bending rigidity of the shaft in the second direction.

Description

L'invention concerne une raquette de badminton.The invention relates to a badminton racket.

Dans le domaine des sports de raquette, notamment pour le badminton, la souplesse d'une tige permet de conférer une certaine puissance à une raquette, c'est-à-dire de lui permettre d'impacter un volant pour lui transmettre une énergie cinétique relativement importante. A contrario, la rigidité d'une tige permet une frappe précise, en particulier lors de la finalisation d'un coup.In the field of racket sports, especially for badminton, the flexibility of a rod makes it possible to confer some power on a racket, that is to say to allow it to impact a steering wheel to transmit kinetic energy relatively important. In contrast, the rigidity of a rod allows a precise strike, especially when finalizing a shot.

Les raquettes connues utilisent à la fois la souplesse et la rigidité d'une tige de liaison entre leur poignée et leur cadre pour tenter d'obtenir une puissance et une précision relativement élevées. Cette approche de compromis n'est pas totalement satisfaisante, dans la mesure où ni la puissance ni la précision ne sont optimisées.Known snowshoes use both the flexibility and stiffness of a connecting rod between their handle and frame to attempt to achieve relatively high power and accuracy. This compromise approach is not entirely satisfactory, as neither power nor accuracy is optimized.

Certaines raquettes utilisent des tiges à section ovale allongée selon une direction parallèle au plan du tamis de la raquette. Cette géométrie est supposée améliorer la stabilité de la raquette en torsion mais tend à diminuer sa rigidité en flexion selon une direction perpendiculaire au tamis, c'est-à-dire selon la direction le long de laquelle le tamis frappe le volant. Ceci induit un défaut de précision de la raquette.Some snowshoes use elongated oval section stems in a direction parallel to the racquet's sieve plane. This geometry is supposed to improve the stability of the racket in torsion but tends to decrease its rigidity in flexion in a direction perpendicular to the screen, that is to say in the direction along which the sieve strikes the steering wheel. This induces a lack of accuracy of the racket.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant une nouvelle raquette qui permet d'obtenir une puissance et une précision de frappe améliorées par rapport aux raquettes de l'état de la technique.It is these drawbacks that the invention intends to remedy more particularly by proposing a new racket which makes it possible to obtain improved power and typing accuracy compared with rackets of the state of the art.

A cet effet, l'invention concerne une raquette de badminton qui comprend un cadre, une poignée et une tige reliant ce cadre à cette poignée, cette raquette définissant une première direction parallèle à un axe longitudinal de la tige, une deuxième direction perpendiculaire à la première direction et parallèle à un plan selon lequel s'étend un tamis monté dans le cadre et une troisième direction perpendiculaire aux première et deuxième directions et au plan du tamis. Conformément à l'invention, la tige présente une rigidité en flexion selon la troisième direction qui est supérieure à sa rigidité en flexion selon la deuxième direction.For this purpose, the invention relates to a badminton racket which comprises a frame, a handle and a rod connecting this frame to this handle, this racket defining a first direction parallel to a longitudinal axis of the rod, a second direction perpendicular to the first direction and parallel to a plane according to which extends a sieve mounted in the frame and a third direction perpendicular to the first and second directions and the plane of the sieve. According to the invention, the rod has a flexural rigidity in the third direction which is greater than its bending stiffness in the second direction.

Grâce à l'invention, la rigidité en flexion différenciée de la tige, selon la deuxième direction et selon la troisième direction permet, lorsque l'utilisateur arme son coup, de faire fléchir la tige, de façon élastique, et d'emmagasiner de l'énergie dans la tige selon la deuxième direction. Cette énergie est retransmise au volant lors de la frappe qui a lieu en déplaçant la raquette globalement selon la troisième direction. La puissance de la raquette est améliorée par la rigidité relativement faible de la tige en flexion selon la deuxième direction. La précision de la raquette n'est pas dégradée car la rigidité en flexion selon la troisième direction est relativement élevée.Thanks to the invention, the differentiated flexural rigidity of the rod, in the second direction and in the third direction allows, when the user arms his blow, to bend the rod, elastically, and to store the rod. energy in the rod in the second direction. This energy is transmitted to the wheel when the shot is made by moving the racquet overall in the third direction. The power of the racket is improved by the relatively low rigidity of the bending rod according to the second direction. The accuracy of the racket is not degraded because the bending stiffness in the third direction is relatively high.

Selon des aspects avantageux mais non obligatoires de l'invention, une raquette conforme à l'invention peut incorporer une ou plusieurs des caractéristiques suivantes prises dans toute combinaison techniquement admissible :

  • La tige présente, en section transversale, une forme extérieure circulaire.
  • La tige présente, en section transversale, une forme extérieure allongée, avec sa plus grande dimension parallèle à la troisième direction.
  • La tige est creuse et présente une épaisseur de paroi selon la troisième direction supérieure à son épaisseur de paroi selon la deuxième direction.
  • Un volume creux central de la tige présente, en section transversale, un contour allongé, avec sa plus grande dimension parallèle à la deuxième direction.
  • Le matériau constitutif de la tige est homogène autour de l'axe longitudinal de la tige.
  • La tige est équipée de moyens de renfort localisé de sa rigidité en flexion selon la troisième direction.
  • Les moyens de renfort sont alignés selon la troisième direction.
  • Les moyens de renfort sont apposés sur l'extérieur ou l'intérieur de la tige.
  • Les moyens de renfort sont formés par des bandes contenant des fibres de carbone.
According to advantageous but non-compulsory aspects of the invention, a racket according to the invention may incorporate one or more of the following features taken in any technically permissible combination:
  • The rod has, in cross section, a circular outer shape.
  • The rod has, in cross section, an elongated outer shape, with its largest dimension parallel to the third direction.
  • The stem is hollow and has a wall thickness in the third direction greater than its wall thickness in the second direction.
  • A central hollow volume of the rod has, in cross section, an elongate contour, with its largest dimension parallel to the second direction.
  • The constituent material of the rod is homogeneous around the longitudinal axis of the rod.
  • The rod is equipped with local reinforcement means of its flexural rigidity in the third direction.
  • The reinforcement means are aligned in the third direction.
  • The reinforcement means are affixed to the outside or the inside of the rod.
  • The reinforcement means are formed by strips containing carbon fibers.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre de trois modes de réalisation d'une raquette conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'une raquette conforme à un premier mode de réalisation de l'invention ;
  • la figure 2 est une section à plus grande échelle selon la ligne II-II à la figure 1 ;
  • la figure 3 est une section analogue à la figure 2, pour une raquette conforme à un deuxième mode de réalisation de l'invention et
  • la figure 4 est une section analogue à la figure 2, pour une raquette conforme à un troisième mode de réalisation de l'invention.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of three embodiments of a racket in accordance with its principle, given solely as an example and made with reference to the accompanying drawings in which:
  • the figure 1 is a perspective view of a racket according to a first embodiment of the invention;
  • the figure 2 is a larger-scale section along the line II-II to the figure 1 ;
  • the figure 3 is a section similar to the figure 2 for a racket according to a second embodiment of the invention and
  • the figure 4 is a section similar to the figure 2 for a racket according to a third embodiment of the invention.

La raquette 1 représentée aux figures 1 et 2 comprend un cadre 2 en forme de boucle fermée et une poignée 4 destinée à être prise en main par un utilisateur. Une tige 6 relie la poignée 4 au cadre 2 et s'étend suivant un axe longitudinal X1 qui constitue un axe longitudinal de la raquette 1. Un tamis 8 est monté dans le cadre 2. Ce tamis 8 est formé de cordes longitudinales 82 qui s'étendent parallèlement à l'axe X1 et les cordes transversales 84 qui s'étendent perpendiculairement à cet axe. Les cordes 82 et 84 passent à travers des oeillets 22 disposés dans des orifices 24 qui traversent le cadre 2 de part en part, de sa surface externe vers sa surface interne.The racket 1 shown in figures 1 and 2 comprises a frame 2 in the form of a closed loop and a handle 4 intended to be taken in hand by a user. A rod 6 connects the handle 4 to the frame 2 and extends along a longitudinal axis X 1 which constitutes a longitudinal axis of the racket 1. A sieve 8 is mounted in the frame 2. This sieve 8 is formed of longitudinal ropes 82 which extend parallel to the axis X 1 and the transverse ropes 84 which extend perpendicularly to this axis. The ropes 82 and 84 pass through eyelets 22 disposed in orifices 24 which pass through the frame 2 from one side to the other, from its outer surface to its inner surface.

On note P8 le plan du tamis 8, c'est-à-dire un plan contenant à la fois les cordes 82 et 84.Note P 8 the plane of the sieve 8, that is to say a plane containing both the ropes 82 and 84.

On note X2 un axe contenu dans le plan P8 perpendiculaire à l'axe X1 et passant par le centre géométrique C8 du tamis 8. L'axe X2 est un axe transversal pour la raquette 1.X 2 denotes an axis contained in the plane P 8 perpendicular to the axis X 1 and passing through the geometric center C 8 of the sieve 8. The axis X 2 is a transverse axis for the racket 1.

On note par ailleurs X3 un axe perpendiculaire au plan P8, donc aux axes X1 et X2 et passant par le centre C8. Pour la clarté du dessin, l'axe X3 est représenté à la figure 1 uniquement sur le repère géométrique dessiné à coté de la raquette. II peut être qualifié d'axe frontal, en ce sens qu'il définit la direction de frappe normale de la raquette 1.In addition, X 3 denotes an axis perpendicular to the plane P 8 , thus to the axes X 1 and X 2 and passing through the center C 8 . For the sake of clarity, the X axis 3 is represented at figure 1 only on the geometric mark drawn next to the racket. It can be called a frontal axis, in that it defines the normal direction of striking of the racket 1.

On note respectivement D1 une direction parallèle à l'axe X1 et allant de la poignée 4 vers le cadre 2, D2 une direction parallèle à l'axe X2 et allant de la gauche vers la droite à la figure 1 et D3 une direction parallèle à l'axe X3 et allant du haut vers le bas à la figure 1. La direction D2 est une direction latérale pour la raquette 1, alors que la direction D3 est une direction frontale.D 1 denotes respectively a direction parallel to the axis X 1 and from the handle 4 to the frame 2, D 2 a direction parallel to the axis X 2 and going from the left to the right to the figure 1 and D 3 a direction parallel to the axis X 3 and going from the top down to the figure 1 . The direction D 2 is a lateral direction for the racket 1, while the direction D 3 is a frontal direction.

Comme cela ressort plus particulièrement de la figure 2, la tige 6 comprend une surface radiale externe 62 circulaire et centrée sur l'axe X1. Le caractère circulaire de la surface 62 confère un aspect esthétique satisfaisant à la raquette 1, quel que soit l'angle de vision.As is more particularly apparent from the figure 2 , the rod 6 comprises an outer radial surface 62 circular and centered on the axis X 1 . The circular nature of the surface 62 gives a satisfactory aesthetic appearance to the racket 1, regardless of the viewing angle.

La tige 6 est creuse et l'on note V6 son volume intérieur qui est à section ovale, avec sa plus grande dimension alignée sur l'axe X2.The rod 6 is hollow and V 6 is noted its interior volume which is oval section, with its largest dimension aligned on the axis X 2 .

Le matériau constitutif de la tige 6 comprend une résine polymère dans laquelle sont noyées des fibres de renfort, par exemple en carbone. Ce matériau est homogène autour de l'axe X1.The constituent material of the rod 6 comprises a polymer resin in which reinforcement fibers, for example carbon, are embedded. This material is homogeneous around the axis X 1 .

La tige 6 est tubulaire et son épaisseur variable autour de l'axe X1. Plus précisément, compte tenu de la géométrie de la surface 62 et du volume V6, l'épaisseur e2 de paroi de la tige 6 selon la direction D2 est inférieure à l'épaisseur e3 de paroi de cette tige selon la direction D3, Ainsi, la tige 6 présente une rigidité en flexion différenciée selon les directions D2 et D3, Plus précisément, en considérant que la tige 6 est encastrée dans la poignée 4, un mouvement de flexion de la tige 6 selon la direction D2 peut être considéré comme un mouvement de rotation autour d'un axe X'3 parallèle à l'axe X3 et passant par le point d'encastrement de la tige 6 dans la poignée 4. De même, un mouvement de flexion selon la direction D3 peut être considéré comme une rotation autour d'un axe X'2 parallèle à l'axe X2 et passant par un point d'encastrement de la tige 6 dans la poignée 4.The rod 6 is tubular and its thickness varies around the axis X 1 . More specifically, given the geometry of the surface 62 and the volume V 6 , the wall thickness e 2 of the rod 6 in the direction D 2 is smaller than the thickness e 3 of the wall of this rod in the direction D 3 , Thus, the rod 6 has a flexural rigidity differentiated along the directions D 2 and D 3 , More specifically, considering that the rod 6 is embedded in the handle 4, a bending movement of the rod 6 in the direction D 2 can be considered as a rotational movement about an axis X ' 3 parallel to the axis X 3 and passing through the point of insertion of the rod 6 in the handle 4. Similarly, a bending movement in the direction D 3 can be considered as a rotation about an axis X ' 2 parallel to the axis X 2 and passing through a point of embedding of the rod 6 in the handle 4.

Compte tenu de la géométrie en section de la tige 6, celle-ci est plus souple selon la direction D2 que selon la direction D3. Given the geometry in section of the rod 6, it is more flexible in the direction D 2 than in the direction D 3.

Lorsqu'un utilisateur arme son coup, il déplace la raquette 1 selon une direction d'avance, alors que le plan P8 est globalement parallèle à cette direction d'avance. Dans ces conditions, compte tenu de la flexibilité relativement importante de la tige 6 selon la direction D2, la tige 6 fléchit élastiquement et emmagasine de l'énergie. Lorsqu'il est sur le point de frapper le volant, l'utilisateur tourne la raquette sur un quart de tour autour de l'axe X1, ce qui a pour effet d'amener la direction D3 dans le sens de déplacement de la raquette 1. Dans ces conditions, lorsque la raquette frappe le volant, elle est relativement rigide, c'est-à-dire plus rigide que selon la direction D2. Il en résulte que même si la tige 6 restitue l'énergie emmagasinée élastiquement lors de la première partie du mouvement, la précision du coup est bonne, puisque la raquette est assez rigide selon la direction D3. When a user arms his shot, he moves the racket 1 in a direction of advance, while the plane P 8 is generally parallel to this direction in advance. Under these conditions, given the relatively high flexibility of the rod 6 in the direction D 2 , the rod 6 flexes elastically and stores energy. When he is about to hit the steering wheel, the user turns the racket about a quarter turn around the axis X1, which has the effect of bringing the direction D 3 in the direction of movement of the racket 1. In these conditions, when the racket strikes the steering wheel, it is relatively rigid, that is to say stiffer than in the direction D 2. It follows that even if the rod 6 restores the energy stored elastically when the first part of the movement, the accuracy of the shot is good, since the racket is quite rigid in the direction D 3.

Ce comportement différencié de la tige 6 en flexion selon les directions D2 et D3 résulte de la différence entre les épaisseurs e2 et e3.This differentiated behavior of the rod 6 in flexion along the directions D 2 and D 3 results from the difference between the thicknesses e 2 and e 3 .

Dans les deuxième et troisième modes de réalisation de l'invention représentés aux figures 3 et 4, les éléments analogues à ceux du premier mode de réalisation portent les mêmes références. Dans ce qui suit, on ne décrit que ce qui distingue ces modes de réalisation du premier.In the second and third embodiments of the invention shown in figures 3 and 4 elements similar to those of the first embodiment bear the same references. In what follows, only what distinguishes these embodiments from the first is described.

Dans le deuxième mode de réalisation, la surface radiale externe 62 de la tige 6 est à section non circulaire, en l'espèce ovale, avec sa plus grande dimension orientée selon la direction D3. Le volume V6 est, quant à lui, à section circulaire. Ainsi, l'épaisseur e2 de paroi de la tige 6 selon la direction D2 est inférieure à l'épaisseur de paroi e3 selon la direction D3. In the second embodiment, the outer radial surface 62 of the rod 6 is of non-circular section, in this case oval, with its largest dimension oriented in the direction D 3. The volume V 6 is, for its part, circular section. Thus, the wall thickness e 2 of the rod 6 in the direction D 2 is smaller than the wall thickness e 3 in the direction D 3.

Dans le troisième mode de réalisation, la surface radiale externe 62 de la tige 6 est à section circulaire de même que le volume V6. Deux renforts 64 sont intégrés à la tige 6 et s'étendent, au voisinage de la surface 62, c'est-à-dire sur l'extérieur de celle-ci, en étant alignés selon la direction D3. In the third embodiment, the outer radial surface 62 of the rod 6 is of circular section as the volume V 6. Two reinforcements 64 are integrated in the rod 6 and extend in the vicinity of the surface 62, c that is to say on the outside thereof, being aligned in the direction D 3.

Ces renforts 64 peuvent être réalisés par des bandes contenant des fibres de carbone, éventuellement imprégnées de résine, avec une densité de fibres de carbone variable selon la différence de rigidité souhaitée. Ainsi, les éléments 64 permettent de renforcer localement la rigidité en flexion de la tige 6, selon la direction D3 puisqu'ils sont alignés selon cette direction.These reinforcements 64 may be made by strips containing carbon fibers, optionally impregnated with resin, with a variable carbon fiber density according to the desired difference in rigidity. Thus, the elements 64 can locally reinforce the bending stiffness of the rod 6, in the direction D 3 since they are aligned in this direction.

Selon la direction D2, les renforts 64 influent peu sur le comportement en flexion de la tige 6 car ils sont soumis à des déplacements, et donc à des contraintes inferieures à ceux auxquels ils sont soumis lors d'une flexion selon D3.In the direction D 2 , the reinforcements 64 have little effect on the bending behavior of the rod 6 because they are subjected to displacements, and therefore to stresses inferior to those to which they are subjected during flexion along D 3 .

L'invention n'est pas limitée aux modes de réalisation décrits. Ainsi, le volume D6 du premier mode de réalisation peut être à section autre que ovale, par exemple polygonale. De même, la surface 62 peut être à section autre que ovale à la figure 3, par exemple polygonale.The invention is not limited to the described embodiments. Thus, the volume D 6 of the first embodiment may be of other than oval section, for example polygonal. Similarly, the surface 62 may be of section other than oval to the figure 3 , for example polygonal.

L'orientation des directions D1, D2 et D3 le long des axes X1, X2 et X3 est donnée à titre d'exemple et peut être inversée.The orientation of the directions D 1 , D 2 and D 3 along the axes X 1 , X 2 and X 3 is given by way of example and can be reversed.

Selon une variante non représentée, les renforts 64 peuvent également être apposés à l'intérieur de la tige.According to a variant not shown, the reinforcements 64 may also be affixed inside the rod.

Les caractéristiques des modes de réalisation et variantes envisagés ci-dessus peuvent être combinées entre elles.The features of the embodiments and alternatives contemplated above may be combined with one another.

Claims (10)

Raquette de badminton (1) comprenant un cadre (2), une poignée (4) et une tige (6) reliant le cadre à la poignée, cette raquette définissant : - une première direction (D1) parallèle à un axe longitudinal (X1) de la tige, - une deuxième direction (D2) perpendiculaire à la première direction (D1) et parallèle à un plan (P8) selon lequel s'étend un tamis (8) monté dans le cadre et - une troisième direction (D3) perpendiculaire aux première et deuxième directions et au plan du tamis,
caractérisée en ce que la tige (6) présente une rigidité en flexion selon la troisième direction (D3) supérieure à sa rigidité en flexion selon la deuxième direction. Badminton racket (1) comprising a frame (2), a handle (4) and a rod (6) connecting the frame to the handle, this racket defining: a first direction (D 1 ) parallel to a longitudinal axis (X 1 ) of the rod, - a second direction (D 2 ) perpendicular to the first direction (D 1 ) and parallel to a plane (P 8 ) according to which extends a screen (8) mounted in the frame and a third direction (D 3 ) perpendicular to the first and second directions and to the plane of the sieve,
characterized in that the rod (6) has a bending stiffness in the third direction (D 3 ) greater than its bending stiffness in the second direction. Raquette selon la revendication 1, caractérisée en ce que la tige (6) présente, en section transversale, une forme extérieure (62) circulaire.Racket according to claim 1, characterized in that the rod (6) has, in cross section, a circular outer shape (62). Raquette selon la revendication 1, caractérisée en ce que la tige présente, en section transversale, une forme extérieure (62) allongée, avec sa plus grande dimension parallèle à la troisième direction (D3).Racket according to claim 1, characterized in that the rod has, in cross section, an elongate outer shape (62), with its largest dimension parallel to the third direction (D 3 ). Raquette selon l'une des revendications précédentes, caractérisée en ce que la tige (6) est creuse et présente une épaisseur de paroi (e3) selon la troisième direction (D3) supérieure à son épaisseur de paroi (e2) selon la deuxième direction (D2).Racket according to one of the preceding claims, characterized in that the rod (6) is hollow and has a wall thickness (e 3 ) in the third direction (D 3 ) greater than its wall thickness (e 2 ) according to the second direction (D 2 ). Raquette selon les revendications 2 et 4, caractérisée en ce qu'un volume creux central (V6) de la tige (6) présente, en section transversale, un contour allongé, avec sa plus grande dimension parallèle à la deuxième direction (D2).Racket according to claims 2 and 4, characterized in that a central hollow volume (V 6 ) of the rod (6) has an elongated cross-sectional shape with its largest dimension parallel to the second direction (D2) . Raquette selon l'une des revendications précédentes, caractérisée en ce que le matériau constitutif de la tige (6) est homogène autour de l'axe longitudinal (X1) de la tige.Racket according to one of the preceding claims, characterized in that the material constituting the rod (6) is homogeneous around the longitudinal axis (X 1 ) of the rod. Raquette selon l'une des revendications 1 à 5, caractérisée en ce que la tige est équipée de moyens (64) de renfort localisé de sa rigidité en flexion selon la troisième direction (D3).Racket according to one of claims 1 to 5, characterized in that the rod is equipped with means (64) localized reinforcement of its flexural rigidity in the third direction (D 3 ). Raquette selon la revendication 7, caractérisée en ce que les moyens de renfort (64) sont alignés selon la troisième direction (D3).Racket according to claim 7, characterized in that the reinforcing means (64) are aligned in the third direction (D 3 ). Raquette selon l'une des revendications 7 et 8, caractérisée en ce que les moyens de renfort (64) sont apposés sur l'extérieur ou à l'intérieur de la tige (6).Racket according to one of claims 7 and 8, characterized in that the reinforcing means (64) are affixed to the outside or inside of the rod (6). Raquette selon l'une des revendications 7 à 9, caractérisée en ce que les moyens de renfort (64) sont formés par des bandes contenant des fibres de carbone.Racket according to one of claims 7 to 9, characterized in that the reinforcing means (64) are formed by strips containing carbon fibers.
EP13187210.3A 2012-10-04 2013-10-03 Badminton racket Active EP2716333B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1259443A FR2996462B1 (en) 2012-10-04 2012-10-04 BADMINTON RACKET

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EP2716333A1 true EP2716333A1 (en) 2014-04-09
EP2716333B1 EP2716333B1 (en) 2018-04-18

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US (1) US9227113B2 (en)
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JP (1) JP6319786B2 (en)
CN (1) CN103721385B (en)
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CN109529287A (en) * 2019-01-11 2019-03-29 邬惠林 A kind of offensive and defensive alliance racket
US11161016B2 (en) * 2019-03-19 2021-11-02 Sumitomo Rubber Industries, Ltd. Racket
CN110051996B (en) * 2019-04-30 2020-08-21 江苏正和体育用品有限公司 Gradual change formula racket

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Also Published As

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JP2014073383A (en) 2014-04-24
JP6319786B2 (en) 2018-05-09
FR2996462A1 (en) 2014-04-11
CN103721385A (en) 2014-04-16
US20140100063A1 (en) 2014-04-10
FR2996462B1 (en) 2014-12-19
US9227113B2 (en) 2016-01-05
EP2716333B1 (en) 2018-04-18
CN103721385B (en) 2017-07-21

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