EP1116502A1 - Racket frame and tennis racket encompassing such a frame - Google Patents

Racket frame and tennis racket encompassing such a frame Download PDF

Info

Publication number
EP1116502A1
EP1116502A1 EP01420006A EP01420006A EP1116502A1 EP 1116502 A1 EP1116502 A1 EP 1116502A1 EP 01420006 A EP01420006 A EP 01420006A EP 01420006 A EP01420006 A EP 01420006A EP 1116502 A1 EP1116502 A1 EP 1116502A1
Authority
EP
European Patent Office
Prior art keywords
frame
rope
zone
width
eyelets
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
EP01420006A
Other languages
German (de)
French (fr)
Other versions
EP1116502B1 (en
Inventor
Pierre-Yves Arroyo
Marc Poggi
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.)
Babolat VS SA
Original Assignee
Babolat VS SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Babolat VS SA filed Critical Babolat VS SA
Publication of EP1116502A1 publication Critical patent/EP1116502A1/en
Application granted granted Critical
Publication of EP1116502B1 publication Critical patent/EP1116502B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • A63B51/00—Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings

Definitions

  • the invention relates to a badminton racket frame, and a badminton racket comprising such a frame.
  • Figures 7 and 8 which are respectively a perspective view and a section according to the line VIII-VIII in FIG. 7 of a conventional racket frame, it is known to form, on the outside of the frame 102 a badminton racket and opposite its handle, a longitudinal groove 106 for receiving and protecting a string forming the sieve of this racket.
  • This throat avoids the rope is not exposed, especially in the event of impact or friction of the frame against an obstacle or against the ground.
  • the bottom of this groove is pierced with orifices 105 passing through the frame, each of these holes being intended to be equipped with a rope guide eyelet.
  • This groove is greater than or equal to the width of the orifices fitted eyelets, that is to say in practice far superior to the diameter of the rope.
  • the geometry of the eyelets known and their housing is such that the rope is stretched between two eyelets without contact with the frame, which increases the risk of rope breakage.
  • the invention relates to a framework for badminton racket comprising holes for the passage of a rope intended to form the sieve of the racket, these holes being fitted with rope guide eyelets while at minus a recessed area is formed by the outer side of the frame for receiving this rope passing through two of these orifices, characterized in that the aforementioned zone has, on most of its length, a first width less than the maximum diameter of the eyelets and, at the level of these orifices, a second width greater than this diameter.
  • the geometry of the reception area rope on the outside of the frame is optimized by relation to its function in that it allows maintenance effective longitudinal of the rope while protecting it from impact or abrasion wear, while the rigidity of the executive is not significantly affected by the formation of this area over most of its length.
  • this area is widened to allow reception of the eyelets, this enlargement taking place on a small part of the reception area, which prevents weakening the framework.
  • the invention also relates to a badminton racket which includes a frame as previously described.
  • a racket is more rigid than those of the prior art while effectively protecting the rope against risks sectioning, especially in the event of impact or friction against an obstacle.
  • the racket 1 shown in the figures comprises a frame 2, a rod 3 and a handle 4 for handling.
  • the frame 2 is hollow and pierced with orifices 5 joining its outer side 2 a and its inner side 2 b .
  • the frame 2 is made of composite material, such as a structure with carbon fiber reinforcement and an epoxy matrix. It could also be metallic.
  • the holes 5 On the outer side 2a, the holes 5 have a flared shape. More specifically, the entry zone 5 a of each orifice 5 has a generally frustoconical shape converging towards the interior of the frame 2.
  • the orifices 5 are connected by a groove 6 having a cross section in the form of an open V or U.
  • l 1 the width of each groove 6.
  • l 2 the width of each entry zone 5 a , which corresponds in fact at its maximum diameter.
  • the orifices 5 are not all connected by a groove 6. More precisely, certain zones 2 c of the frame 2 are devoid of grooves 6 on their respective outer sides because, there is no it is not expected that a rope will be placed at the level of the zones 2 c when the sieve of the racket is placed.
  • each zone z is formed of two zones d entry 5a of orifices 5 and of a groove 6.
  • Eyelets 7 are provided to be put in place in each orifice 5, as represented by the arrows F 1 in FIG. 1, in order to guide a rope 8 forming the sieve of the racket, as represented in FIG. 6.
  • the eyelets 7 are made of plastic and include a tubular rod 7 a , intended to pass through an orifice 5, and a head 7 b of flared external shape corresponding to the shape of the entry zones 5 a .
  • the heads 7b of the eyelets 7 are generally frustoconical and their angle at the top ⁇ is of the order of 80 °. Satisfactory results can be obtained with an angle ⁇ of between 70 and 90 °.
  • the angle at the top of the entry zones 5a is substantially equal to the angle ⁇ .
  • the flared geometry of the zones 5 a and the positioning of the groove 6 adjacent to each zone 5 a allow the rope 8 stretched in the groove 6 between the eyelets 7 to rest against the bottom 6a of the groove 6, so that the cord is supported in the groove 6, which makes it possible to limit the risks of premature rupture of the cord 8.
  • the width l 1 is chosen to be equal to or slightly greater than the nominal diameter d 1 of the cord 8, so that the cord 8 is effectively guided transversely in each groove 6 when it is stretched between orifices 5.
  • d 2 the maximum diameter of the head 7b of each eyelet 7, this diameter d 2 being less than or equal to the width l 2 to allow the positioning of the eyelets 7 in the zones 5a of the orifices 5.
  • the width l 1 is less than or equal to the diameter d 2 of the eyelet received in an orifice 5 adjoining the groove 6, which corresponds to the fact that each groove 6 has a width optimized for receiving a rope 8 while affecting as little as possible the overall rigidity of the frame 2.
  • the section of the groove 6, as it appears in the Figure 3 is that of a U or an open V.
  • the edges of this groove can be more or less open, these edges can be generally rectilinear, convex or concave, according to design choices within the reach of man job.
  • zones z do not substantially affect the rigidity of the frame 2, such zones can be provided over the entire periphery of the frame 2, with the exception of its zone of connection with the rod 3.
  • certain zones z can be contiguous, in the sense that there is no part of the frame devoid of groove 6 between these zones, certain orifices 5 being common to two such adjacent z zones. It can also be provided that all the zones z are joined two by two, in the sense that there are no parts equivalent to the parts 2 c shown.
  • the zones z can be limited to the front part of the frame 2, that is to say the part opposite to the rod 3, because it is in this part that the cord 8 is the most exposed to impact or friction with obstacles.
  • the eyelets 7 have been shown as identical. However, some eyelets 7 may have a section suitable for the passage of several strands of rope. In this case, their maximum diameter d 2 is greater and the geometry of the zones 5a is adapted, in particular the width l 2 .

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Emergency Lowering Means (AREA)
  • Ropes Or Cables (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Fertilizing (AREA)
  • Tents Or Canopies (AREA)
  • Laminated Bodies (AREA)

Abstract

The racket frame (2) comprises cord passage holes (5) fitted with cord guide eyelets (7). A hollow zone is formed by the outside of the frame (2a) for receiving the cord (8) passing in two of the holes. The reception zone has over the largest part of its length a first width less than the maximum diameter (d2) of the eyelets and at the holes a second width greater than this diameter. This zone enables an efficient reception of the cord without decreasing the frame rigidity. The eyelets have a widened head (7b) allowing a surface support on the widened hole inlet zones (5a).

Description

L'invention a trait à un cadre de raquette de badminton, et à une raquette de badminton comprenant un tel cadre.The invention relates to a badminton racket frame, and a badminton racket comprising such a frame.

Comme représenté sur les figures 7 et 8 qui sont respectivement une vue en perspective et une section selon la ligne VIII-VIII à la figure 7 d'un cadre de raquette classique, il est connu de former, sur l'extérieur du cadre 102 d'une raquette de badminton et à l'opposé de son manche, une gorge longitudinale 106 de réception et de protection d'une corde formant le tamis de cette raquette. Cette gorge évite que la corde ne soit exposée, notamment en cas de chocs ou de frottements du cadre contre un obstacle ou contre le sol. Le fond de cette gorge est percé d'orifices 105 traversant le cadre, chacun de ces orifices étant destiné à être équipé d'un oeillet de guidage de la corde. La largeur de cette gorge est supérieure ou égale à la largeur des orifices équipés d'oeillets, c'est-à-dire en pratique largement supérieure au diamètre de la corde. Ceci présente des inconvénients majeurs : Tout d'abord, plus la gorge 106 est large et plus le cadre 102 est affaibli sur le plan mécanique par la constitution de cette gorge, ce qui peut nuire à la rigidité du tamis de la raquette. De plus, la géométrie des oeillets connus et de leurs logements est telle que la corde est tendue entre deux oeillets sans contact avec le cadre, ce qui augmente les risques de rupture de la corde.As shown in Figures 7 and 8 which are respectively a perspective view and a section according to the line VIII-VIII in FIG. 7 of a conventional racket frame, it is known to form, on the outside of the frame 102 a badminton racket and opposite its handle, a longitudinal groove 106 for receiving and protecting a string forming the sieve of this racket. This throat avoids the rope is not exposed, especially in the event of impact or friction of the frame against an obstacle or against the ground. The bottom of this groove is pierced with orifices 105 passing through the frame, each of these holes being intended to be equipped with a rope guide eyelet. The width of this groove is greater than or equal to the width of the orifices fitted eyelets, that is to say in practice far superior to the diameter of the rope. This has drawbacks major: First, the wider the throat 106 and the more the frame 102 is mechanically weakened by the constitution of this groove, which can affect rigidity racket sieve. In addition, the geometry of the eyelets known and their housing is such that the rope is stretched between two eyelets without contact with the frame, which increases the risk of rope breakage.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un cadre de raquette de badminton dont la rigidité n'est pas amoindrie par la création d'une zone de réception de la corde formant le tamis et qui permet un maintien efficace de cette corde dans cette zone.It is to these disadvantages that we hear more particularly remedy the invention by proposing a racket frame badminton whose rigidity is not reduced by the creation a reception area for the cord forming the screen and which allows effective maintenance of this rope in this area.

Dans cet esprit, l'invention concerne un cadre de raquette de badminton comprenant des orifices de passage d'une corde destinée à former le tamis de la raquette, ces orifices étant équipés d'oeillets de guidage de la corde alors qu'au moins une zone en creux est formée par le côté extérieur du cadre pour la réception de cette corde passant dans deux de ces orifices, caractérisé en ce que la zone précitée a, sur la plus grande partie de sa longueur, une première largeur inférieure au diamètre maximum des oeillets et, au niveau de ces orifices, une seconde largeur supérieure à ce diamètre.In this spirit, the invention relates to a framework for badminton racket comprising holes for the passage of a rope intended to form the sieve of the racket, these holes being fitted with rope guide eyelets while at minus a recessed area is formed by the outer side of the frame for receiving this rope passing through two of these orifices, characterized in that the aforementioned zone has, on most of its length, a first width less than the maximum diameter of the eyelets and, at the level of these orifices, a second width greater than this diameter.

Grâce à l'invention, la géométrie de la zone de réception de la corde sur le côté extérieur du cadre est optimisée par rapport à sa fonction en ce sens qu'elle permet un maintien longitudinal efficace de la corde tout en la protégeant contre des chocs ou une usure par abrasion, alors que la rigidité du cadre n'est pas sensiblement affectée par la formation de cette zone sur la plus grande partie de sa longueur. Au niveau des orifices, cette zone est élargie pour permettre la réception des oeillets, cet élargissement ayant lieu sur une faible partie de la zone de réception, ce qui évite d'affaiblir le cadre.Thanks to the invention, the geometry of the reception area rope on the outside of the frame is optimized by relation to its function in that it allows maintenance effective longitudinal of the rope while protecting it from impact or abrasion wear, while the rigidity of the executive is not significantly affected by the formation of this area over most of its length. At the level orifices, this area is widened to allow reception of the eyelets, this enlargement taking place on a small part of the reception area, which prevents weakening the framework.

Selon des aspects avantageux mais non obligatoires de l'invention, le cadre incorpore une ou plusieurs des caractéristiques suivantes :

  • Chaque zone de réception comprend une partie allongée de largeur égale à la première largeur et deux parties d'extrémité de cette première partie, les parties d'extrémité formant chacune une zone de réception d'une partie d'un des oeillets.
  • La zone en creux présente, au niveau des orifices, une section évasée, notamment globalement tronconique. Dans ce cas, on peut prévoir que le diamètre maximal de la section globalement tronconique est égal à la seconde largeur. Cette géométrie de la zone de réception permet une transmission d'efforts efficace entre chaque oeillet et la partie correspondante de la zone en creux, sans cisaillement ou déformation notable de l'oeillet.
  • La première largeur est sensiblement égale ou légèrement supérieure au diamètre nominal de la corde.
  • La zone en creux a, sur la plus grande partie de sa longueur, une section transversale en forme de V ou de U.
  • La corde est en appui contre le cadre au niveau du fond de la zone en creux dans sa partie de première largeur, lorsqu'elle est tendue dans des oeillets logés dans des orifices de cette zone. En d'autres termes, les oeillets se raccordent à la zone de première largeur, de telle sorte que la corde est supportée par cette zone, ce qui permet d'éviter une rupture prématurée de la corde qui se produit parfois lorsque celle-ci est tendue entre des oeillets à distance du cadre.
  • Il comprend plusieurs zones discrètes de réception de la corde, ces zones étant séparées deux à deux par une section du cadre dépourvue de zones de réception de la corde. Cet aspect de l'invention tire partie du fait que les zones de passage de la corde à l'extérieur du cadre peuvent être prédéterminées avant la formation du tamis et que certaines parties du côté extérieur du cadre ne sont pas destinées à recevoir une partie de la corde. Il est donc possible de ne pas ménager de zone en creux sur ces parties, notamment dans la section du cadre opposée au manche, ce qui permet de conserver au cadre une section globalement arrondie, adaptée sur le plan de la rigidité, entre les zones de réception de la corde.
  • Il comprend plusieurs zones de réception de la corde, certaines au moins de ces zones étant jointives, avec certains orifices communs à deux zones adjacentes.
According to advantageous but not compulsory aspects of the invention, the framework incorporates one or more of the following characteristics:
  • Each reception zone comprises an elongated part of width equal to the first width and two end parts of this first part, the end parts each forming a reception zone of a part of one of the eyelets.
  • The recessed area has, at the orifices, a flared section, in particular generally frustoconical. In this case, provision can be made for the maximum diameter of the generally frustoconical section to be equal to the second width. This geometry of the reception area allows an effective transmission of forces between each eyelet and the corresponding part of the hollow area, without shearing or significant deformation of the eyelet.
  • The first width is substantially equal to or slightly greater than the nominal diameter of the rope.
  • The recessed area has, over most of its length, a V or U-shaped cross section.
  • The rope is in abutment against the frame at the bottom of the hollow zone in its first width part, when it is stretched in eyelets housed in orifices in this zone. In other words, the eyelets connect to the first width area, so that the rope is supported by this area, which avoids premature breakage of the rope which sometimes occurs when it is stretched between eyelets at a distance from the frame.
  • It comprises several discrete areas for receiving the rope, these areas being separated in pairs by a section of the frame devoid of areas for receiving the rope. This aspect of the invention takes advantage of the fact that the areas of passage of the rope outside the frame can be predetermined before the sieve is formed and that certain parts of the outside of the frame are not intended to receive a portion of the rope. It is therefore possible not to leave a hollow area on these parts, in particular in the section of the frame opposite the handle, which makes it possible to keep the frame a generally rounded section, adapted in terms of rigidity, between the areas of receiving the rope.
  • It comprises several areas for receiving the rope, at least some of these areas being contiguous, with certain orifices common to two adjacent areas.

L'invention concerne également une raquette de badminton qui comprend un cadre tel que précédemment décrit. Une telle raquette est plus rigide que celles de l'état de la technique tout en protégeant efficacement la corde contre les risques de sectionnement, notamment en cas de chocs ou de frottements contre un obstacle.The invention also relates to a badminton racket which includes a frame as previously described. Such a racket is more rigid than those of the prior art while effectively protecting the rope against risks sectioning, especially in the event of impact or friction against an obstacle.

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

  • La figure 1 est une vue en perspective d'un cadre de raquette conforme à l'invention avec deux oeillets de guidage en cours de mise en place ;
  • La figure 2 est une coupe longitudinale de la partie avant du cadre de la figure 1 ;
  • La figure 3 est une section selon la ligne III-III à la figure 2 ;
  • La figure 4 est une section selon la ligne IV-IV de la figure 2 ;
  • La figure 5 est une section selon la ligne V-V à la figure 2 et
  • La figure 6 est une coupe longitudinale de principe, à plus grande échelle que la figure 2, du cadre des figures 1 à 5 équipé d'une corde formant tamis.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a racket according to the invention, given solely by way of example and made with reference to the accompanying drawings in which:
  • Figure 1 is a perspective view of a racket frame according to the invention with two guide eyelets being put in place;
  • Figure 2 is a longitudinal section of the front part of the frame of Figure 1;
  • Figure 3 is a section along line III-III in Figure 2;
  • Figure 4 is a section along line IV-IV of Figure 2;
  • Figure 5 is a section along line VV in Figure 2 and
  • Figure 6 is a longitudinal section in principle, on a larger scale than Figure 2, of the frame of Figures 1 to 5 equipped with a sieve rope.

La raquette 1 représentée sur les figures comprend un cadre 2, une tige 3 et une poignée 4 de prise en main. Le cadre 2 est creux et percé d'orifices 5 joignant son côté extérieur 2a et son côté intérieur 2b. Le cadre 2 est réalisé en matière composite, telle qu'une structure à renfort de fibres de carbone et à matrice époxyde. Il pourrait également être métallique.The racket 1 shown in the figures comprises a frame 2, a rod 3 and a handle 4 for handling. The frame 2 is hollow and pierced with orifices 5 joining its outer side 2 a and its inner side 2 b . The frame 2 is made of composite material, such as a structure with carbon fiber reinforcement and an epoxy matrix. It could also be metallic.

Sur le côté extérieur 2a, les orifices 5 ont une forme évasée. Plus spécifiquement, la zone d'entrée 5a de chaque orifice 5 a une forme globalement tronconique convergente en direction de l'intérieur du cadre 2.On the outer side 2a, the holes 5 have a flared shape. More specifically, the entry zone 5 a of each orifice 5 has a generally frustoconical shape converging towards the interior of the frame 2.

Les orifices 5 sont reliés par une gorge 6 présentant une section transversale en forme de V ouvert ou de U. On note l1 la largeur de chaque gorge 6. On note l2 la largeur de chaque zone d'entrée 5a, qui correspond en fait à son diamètre maximum.The orifices 5 are connected by a groove 6 having a cross section in the form of an open V or U. We denote l 1 the width of each groove 6. We denote l 2 the width of each entry zone 5 a , which corresponds in fact at its maximum diameter.

Dans la partie du cadre 2 opposée à la tige 3, les orifices 5 ne sont pas tous reliés par une gorge 6. Plus précisément, certaines zones 2c du cadre 2 sont dépourvues de gorges 6 sur leurs côtés extérieurs respectifs car, il n'est pas prévu qu'une corde soit disposée au niveau des zones 2c lors de la mise en place du tamis de la raquette.In the part of the frame 2 opposite the rod 3, the orifices 5 are not all connected by a groove 6. More precisely, certain zones 2 c of the frame 2 are devoid of grooves 6 on their respective outer sides because, there is no it is not expected that a rope will be placed at the level of the zones 2 c when the sieve of the racket is placed.

Ainsi, il est formé, à la périphérie du cadre 2 et à l'opposé de la tige 3, une succession de zones discrètes z de réception d'une corde formant le tamis de la raquette, chaque zone z étant formée de deux zones d'entrée 5a d'orifices 5 et d'une gorge 6.Thus, there is formed, at the periphery of the frame 2 and opposite the rod 3, a succession of discrete zones z for receiving a rope forming the screen of the racket, each zone z being formed of two zones d entry 5a of orifices 5 and of a groove 6.

Des oeillets 7 sont prévus pour être mis en place dans chaque orifice 5, comme représenté par les flèches F1 à la figure 1, afin de guider une corde 8 formant le tamis de la raquette, comme représenté à la figure 6. Eyelets 7 are provided to be put in place in each orifice 5, as represented by the arrows F 1 in FIG. 1, in order to guide a rope 8 forming the sieve of the racket, as represented in FIG. 6.

Les oeillets 7 sont réalisés en matière plastique et comprennent une tige tubulaire 7a, destinée à traverser un orifice 5, et une tête 7b de forme extérieure évasée correspondant à la forme des zones d'entrée 5a. Comme il ressort plus particulièrement de la figure 6, les têtes 7b des oeillets 7 sont globalement tronconiques et leur angle au sommet α est de l'ordre de 80°. Des résultats satisfaisants peuvent être obtenus avec un angle α compris entre 70 et 90°.The eyelets 7 are made of plastic and include a tubular rod 7 a , intended to pass through an orifice 5, and a head 7 b of flared external shape corresponding to the shape of the entry zones 5 a . As can be seen more particularly in FIG. 6, the heads 7b of the eyelets 7 are generally frustoconical and their angle at the top α is of the order of 80 °. Satisfactory results can be obtained with an angle α of between 70 and 90 °.

L'angle au sommet des zones d'entrée 5a est sensiblement égal à l'angle α.The angle at the top of the entry zones 5a is substantially equal to the angle α.

Compte tenu de la géométrie respective des zones 5a et des têtes 7b, il est crée un contact surfacique entre les orifices 5 et les oeillets 7, ce qui permet une transmission d'efforts efficace représentée par les flèches F2 à la figure 6, sans risque de déformation ou de cisaillement de la tête 7b d'un oeillet 7.Taking into account the respective geometry of the zones 5 a and of the heads 7 b , a surface contact is created between the orifices 5 and the eyelets 7, which allows an effective transmission of forces represented by the arrows F 2 in FIG. 6 , without risk of deformation or shearing of the head 7b of an eyelet 7.

Comme il ressort plus clairement de la figure 6, la géométrie évasée des zones 5a et le positionnement de la gorge 6 adjacente à chaque zone 5a permettent que la corde 8 tendue dans la gorge 6 entre les oeillets 7 repose contre le fond 6a de la gorge 6, de telle sorte que la corde est soutenue dans la gorge 6, ce qui permet de limiter les risques de rupture prématurée de la corde 8.As is clearer from FIG. 6, the flared geometry of the zones 5 a and the positioning of the groove 6 adjacent to each zone 5 a allow the rope 8 stretched in the groove 6 between the eyelets 7 to rest against the bottom 6a of the groove 6, so that the cord is supported in the groove 6, which makes it possible to limit the risks of premature rupture of the cord 8.

Selon un aspect avantageux de l'invention, la largeur l1 est choisie égale ou légèrement supérieure au diamètre nominal d1 de la corde 8, de telle sorte que la corde 8 est efficacement guidée transversalement dans chaque gorge 6 lorsqu'elle est tendue entre des orifices 5.According to an advantageous aspect of the invention, the width l 1 is chosen to be equal to or slightly greater than the nominal diameter d 1 of the cord 8, so that the cord 8 is effectively guided transversely in each groove 6 when it is stretched between orifices 5.

On note d 2 le diamètre maximum de la tête 7b de chaque oeillet 7, ce diamètre d 2 étant inférieur ou égal à la largeur l 2 pour permettre la mise en place des oeillets 7 dans les zones 5a des orifices 5.We note d 2 the maximum diameter of the head 7b of each eyelet 7, this diameter d 2 being less than or equal to the width l 2 to allow the positioning of the eyelets 7 in the zones 5a of the orifices 5.

La largeur l 1 est inférieure ou égale au diamètre d 2 de l'oeillet reçu dans un orifice 5 attenant à la gorge 6, ce qui correspond au fait que chaque gorge 6 a une largeur optimisée pour recevoir une corde 8 en affectant le moins possible la rigidité globale du cadre 2.The width l 1 is less than or equal to the diameter d 2 of the eyelet received in an orifice 5 adjoining the groove 6, which corresponds to the fact that each groove 6 has a width optimized for receiving a rope 8 while affecting as little as possible the overall rigidity of the frame 2.

La section de la gorge 6, telle qu'elle apparaít à la figure 3, est celle d'un U ou d'un V ouvert. Les bords de cette gorge peuvent être plus ou moins ouverts, ces bords pouvant être globalement rectilignes, convexes ou concaves, en fonction de choix de conception à la portée de l'homme du métier.The section of the groove 6, as it appears in the Figure 3 is that of a U or an open V. The edges of this groove can be more or less open, these edges can be generally rectilinear, convex or concave, according to design choices within the reach of man job.

Compte tenu du fait que les zones z n'affectent pas sensiblement la rigidité du cadre 2, il peut être prévu de telles zones sur la totalité de la périphérie du cadre 2, à l'exception de sa zone de raccordement avec la tige 3.In view of the fact that the zones z do not substantially affect the rigidity of the frame 2, such zones can be provided over the entire periphery of the frame 2, with the exception of its zone of connection with the rod 3.

Comme les zones z sont formées par le côté 2a du cadre 2, une transmission direct des efforts de tension de la corde 8 au cadre 2 est possible, ce qui ne serait pas le cas si un bandage en élastomère était utilisé.As the zones z are formed by the side 2 a of the frame 2, a direct transmission of the tensioning forces from the rope 8 to the frame 2 is possible, which would not be the case if an elastomer bandage was used.

Comme il ressort des parties latérales de la raquette représentée aux figures 1 et 2, certaines zones z peuvent être jointives, en ce sens qu'il n'existe pas de partie du cadre dépourvue de gorge 6 entre ces zones, certains orifices 5 étant communs à deux telles zones z adjacentes. On peut en outre prévoir que toutes les zones z sont jointives deux à deux, en ce sens qu'il n'existe pas de parties équivalentes aux parties 2c représentées.As emerges from the lateral parts of the racket shown in FIGS. 1 and 2, certain zones z can be contiguous, in the sense that there is no part of the frame devoid of groove 6 between these zones, certain orifices 5 being common to two such adjacent z zones. It can also be provided that all the zones z are joined two by two, in the sense that there are no parts equivalent to the parts 2 c shown.

Selon une variante non représentée de l'invention, les zones z peuvent être limitées à la partie avant du cadre 2, c'est-à-dire la partie opposée à la tige 3, car c'est dans cette partie que la corde 8 est la plus exposée aux chocs ou aux frottements avec des obstacles.According to a variant not shown of the invention, the zones z can be limited to the front part of the frame 2, that is to say the part opposite to the rod 3, because it is in this part that the cord 8 is the most exposed to impact or friction with obstacles.

Les oeillets 7 ont été représentés comme identiques. Cependant, certains oeillets 7 peuvent avoir une section adaptée au passage de plusieurs brins de corde. Dans ce cas, leur diamètre maximum d 2 est plus important et la géométrie des zones 5a est adaptée, notamment la largeur l 2.The eyelets 7 have been shown as identical. However, some eyelets 7 may have a section suitable for the passage of several strands of rope. In this case, their maximum diameter d 2 is greater and the geometry of the zones 5a is adapted, in particular the width l 2 .

Claims (10)

Cadre (2) de raquette de badminton (1) comprenant des orifices (5) de passage d'une corde (8) destinée à former le tamis de la raquette, lesdits orifices étant équipés d'oeillets (7) de guidage de ladite corde alors qu'au moins une zone en creux est formée par le côté extérieur (2a) dudit cadre pour la réception de ladite corde passant dans deux desdits orifices, caractérisé en ce que ladite zone (z, 5a, 6) a, sur la plus grande partie de sa longueur, une première largeur (l1) inférieure au diamètre maximum (d2) desdits oeillets et, au niveau desdits orifices (5), une seconde largeur (l2) supérieure audit diamètre.Badminton racket frame (2) (1) comprising holes (5) for passage of a rope (8) intended to form the sieve of the racket, said holes being equipped with eyelets (7) for guiding said rope while at least one recessed region is formed by the outer side (2a) of said frame for receiving said string passing into two of said orifices, characterized in that said zone (z, 5a, 6) has, on most of its length, a first width (l 1 ) less than the maximum diameter (d 2 ) of said eyelets and, at said orifices (5), a second width (l 2 ) greater than said diameter. Cadre selon la revendication 1, caractérisé en ce que chaque zone (z) de réception comprend au moins une partie allongée (6) de largeur égale à la première largeur (l1) et au moins deux parties d'extrémité (5a) de ladite première partie, lesdites parties d'extrémité formant chacune une zone de réception d'une des parties (7b) d'un desdits oeillets (7).Frame according to claim 1, characterized in that each receiving zone (z) comprises at least one elongated part (6) of width equal to the first width (l 1 ) and at least two end parts (5 a ) of said first part, said end parts each forming a reception area for one of the parts (7 b ) of one of said eyelets (7). Cadre selon l'une des revendications précédentes, caractérisé en ce que ladite zone (z) présente, au niveau desdits orifices (5), une section évasée (5a), notamment globalement tronconique.Frame according to one of the preceding claims, characterized in that the said zone (z) has, at the level of the said orifices (5), a flared section (5 a ), in particular generally frustoconical. Cadre selon la revendication 3, caractérisé en ce que le diamètre maximal (l2) de ladite section globalement tronconique est égal à ladite seconde largeur.Frame according to claim 3, characterized in that the maximum diameter (l 2 ) of said generally frustoconical section is equal to said second width. Cadre selon l'une des revendications précédentes, caractérisé en ce que ladite première largeur (l1) est sensiblement égale ou légèrement supérieure du diamètre nominal (d1) de ladite corde (8).Frame according to one of the preceding claims, characterized in that said first width (l 1 ) is substantially equal to or slightly greater than the nominal diameter (d 1 ) of said rope (8). Cadre selon l'une des revendications précédentes, caractérisé en ce que ladite zone (z) a, sur la plus grande partie (6) de sa longueur, une section transversale en forme de V ou de U.Frame according to one of the preceding claims, characterized in that said zone (z) has, on the largest part (6) of its length, a cross section shaped of V or U. Cadre selon l'une des revendications précédentes, caractérisé en ce que ladite corde (8) est en appui contre ledit cadre (2) au niveau du fond (6a) de ladite zone (z) dans sa partie (6) de première largeur, lorsqu'elle est tendue entre des oeillets (7) logés dans des orifices (5) de ladite zone.Frame according to one of the preceding claims, characterized in that said rope (8) bears against said frame (2) at the bottom (6 a ) of said zone (z) in its portion (6) of first width , when stretched between eyelets (7) housed in orifices (5) in said zone. Cadre selon l'une des revendications précédentes, caractérisé en ce qu'il comprend plusieurs zones discrètes (z) de réception de ladite corde (8), lesdites zones étant séparées deux à deux par une section (2c) dudit cadre (2) dépourvue de zone de réception (z) de ladite corde (8).Frame according to one of the preceding claims, characterized in that it comprises several discrete zones (z) for receiving said rope (8), said zones being separated in pairs by a section (2 c ) of said frame (2) devoid of reception area (z) of said rope (8). Cadre selon l'une des revendications 1 à 8, caractérisé en ce qu'il comprend plusieurs zones (z) de réception de ladite corde (8), certaines au moins desdites zones étant jointives, avec certains orifices (5) communs à deux zones adjacentes.Frame according to one of claims 1 to 8, characterized in that it comprises several zones ( z ) for receiving said rope (8), at least some of said zones being contiguous, with certain orifices (5) common to two zones adjacent. Raquette de badminton (1), caractérisée en ce qu'elle comprend un cadre (2) selon l'une des revendications précédentes.Badminton racket (1), characterized in that it comprises a frame (2) according to one of the preceding claims.
EP01420006A 2000-01-14 2001-01-12 Racket frame and tennis racket encompassing such a frame Expired - Lifetime EP1116502B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0000485 2000-01-14
FR0000485A FR2803766B1 (en) 2000-01-14 2000-01-14 RACQUET FRAME, ROPE GUIDING ROPE, AND BADMINTON RACQUET COMPRISING SUCH DEVICES

Publications (2)

Publication Number Publication Date
EP1116502A1 true EP1116502A1 (en) 2001-07-18
EP1116502B1 EP1116502B1 (en) 2005-05-11

Family

ID=8845939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01420006A Expired - Lifetime EP1116502B1 (en) 2000-01-14 2001-01-12 Racket frame and tennis racket encompassing such a frame

Country Status (4)

Country Link
EP (1) EP1116502B1 (en)
AT (1) ATE295206T1 (en)
DE (1) DE60110650D1 (en)
FR (1) FR2803766B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113426085A (en) * 2021-07-30 2021-09-24 沈阳建筑大学 Thread threading tool for badminton racket

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171223A (en) * 1937-12-02 1939-08-29 Roy H Robinson Racket for tennis and batting games and method of manufacturing same
FR1498455A (en) * 1966-07-19 1967-10-20 Carlton Tyre Saving Co Ltd Racket frame
US3568290A (en) * 1966-06-13 1971-03-09 Dunlop Co Ltd Method of making rackets having metal frames
FR2399259A1 (en) * 1977-08-02 1979-03-02 Guyot Michel Expanded polyurethane skins for tennis racquet heads - for radiused stringing holes and channels without needing eyelets
DE9216243U1 (en) * 1992-01-29 1993-03-11 Franz Völkl GmbH & Co Ski und Tennis Sportartikelfabrik KG, 8440 Straubing Ball game rackets, especially tennis rackets
US5944624A (en) * 1996-12-23 1999-08-31 Prince Sports Group, Inc. Notched, slotted grommet for sports racquet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171223A (en) * 1937-12-02 1939-08-29 Roy H Robinson Racket for tennis and batting games and method of manufacturing same
US3568290A (en) * 1966-06-13 1971-03-09 Dunlop Co Ltd Method of making rackets having metal frames
FR1498455A (en) * 1966-07-19 1967-10-20 Carlton Tyre Saving Co Ltd Racket frame
FR2399259A1 (en) * 1977-08-02 1979-03-02 Guyot Michel Expanded polyurethane skins for tennis racquet heads - for radiused stringing holes and channels without needing eyelets
DE9216243U1 (en) * 1992-01-29 1993-03-11 Franz Völkl GmbH & Co Ski und Tennis Sportartikelfabrik KG, 8440 Straubing Ball game rackets, especially tennis rackets
US5944624A (en) * 1996-12-23 1999-08-31 Prince Sports Group, Inc. Notched, slotted grommet for sports racquet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113426085A (en) * 2021-07-30 2021-09-24 沈阳建筑大学 Thread threading tool for badminton racket

Also Published As

Publication number Publication date
DE60110650D1 (en) 2005-06-16
EP1116502B1 (en) 2005-05-11
FR2803766B1 (en) 2002-04-05
ATE295206T1 (en) 2005-05-15
FR2803766A1 (en) 2001-07-20

Similar Documents

Publication Publication Date Title
EP0032101B1 (en) Fatigue indicator
EP2568195B1 (en) Loop web provided with a seam
FR2900212A1 (en) LINK PLATE FOR A CHAIN
FR2665936A3 (en) Chain element with articulated joints and chain including such an element
CA2442913C (en) Endless flexible track with tread ply, in particular for all-terrain vehicles
EP0947620B2 (en) Method of producing a heddle, heddle and shed forming device for a loom
FR2792251A1 (en) SPOKES MADE OF COMPOSITE MATERIAL FOR A WHEEL, AND BICYCLE WHEEL EQUIPPED WITH SAID SPOKES
EP0909870A1 (en) Coupling for a force transmitting device
EP1116502B1 (en) Racket frame and tennis racket encompassing such a frame
EP0289490B1 (en) Snap hook for use in climbing, pot holing or similar activities
EP1967624B1 (en) Loom reed, loom comprising such a reed and method of manufacturing such a reed
CA2434476C (en) Reinforcing cable for flexible endless track
FR2490158A1 (en) ANTI-SLIP CHAIN FOR VEHICLE TIRES
FR3120542A1 (en) Set of guide eyelets and sports racket fitted with such a set
EP1116503B1 (en) Badminton racket
FR3111836A1 (en) Suction cutting conveyor of an automatic blade cutting machine for sheet material
EP0115977B1 (en) Roll up tube for a sail and sail furling gear provided with said tube
FR3097288A1 (en) POWER TRANSMISSION BELT
FR3000953A1 (en) Braking device for use in protection system for curbing distance of one element with regard to another element, has element separated from another element to exert traction longitudinally on support of part in direction of end of other part
BE1015509A3 (en) Tree-dozer head for cutting grass, has wires extending over peripheral wall that includes perforations forming channels, and fixation applied to part of wires such that fixation is disposed within cavity of channels
FR2632622A2 (en) Self-tightening winch for paying out a strap
FR2856422A1 (en) Slider for window regulator, has two contact units penetrating into opening of window for driving window and coming in contact with each other under action of driving force of window
FR2855227A1 (en) Bond fixing device for use with clothing, has cavity with pipe having smooth edges that widen to narrow angle from item, where edges have space with cross section larger than that of bond, in part of cavity to block bond
CA2024674A1 (en) Remote control for telescopic fishing gear having the shape of a truncated cone
FR3121363A1 (en) ANCHOR POINT ATTACHMENT DEVICE AND METHOD OF USING THE ATTACHMENT DEVICE

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIN1 Information on inventor provided before grant (corrected)

Inventor name: POGGI, MARC

Inventor name: ARROYO, PIERRE-YVES

17P Request for examination filed

Effective date: 20011005

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050511

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 60110650

Country of ref document: DE

Date of ref document: 20050616

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050811

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050811

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050811

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050812

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050822

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051019

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20050511

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060131

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060214

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BERE Be: lapsed

Owner name: BABOLAT VS

Effective date: 20060131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050511

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20151224

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131