EP2164579A1 - Ball-striking implement - Google Patents

Ball-striking implement

Info

Publication number
EP2164579A1
EP2164579A1 EP08763313A EP08763313A EP2164579A1 EP 2164579 A1 EP2164579 A1 EP 2164579A1 EP 08763313 A EP08763313 A EP 08763313A EP 08763313 A EP08763313 A EP 08763313A EP 2164579 A1 EP2164579 A1 EP 2164579A1
Authority
EP
European Patent Office
Prior art keywords
head frame
impact device
string
ball impact
holding elements
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
EP08763313A
Other languages
German (de)
French (fr)
Other versions
EP2164579B1 (en
Inventor
Hubert Nagler
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.)
TEC Sportmanagement AG
Original Assignee
TEC Sportmanagement AG
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 TEC Sportmanagement AG filed Critical TEC Sportmanagement AG
Publication of EP2164579A1 publication Critical patent/EP2164579A1/en
Application granted granted Critical
Publication of EP2164579B1 publication Critical patent/EP2164579B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/10—Frames made of non-metallic materials, other than wood
    • 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
    • A63B49/00—Stringed rackets, e.g. for tennis
    • A63B49/02—Frames
    • A63B49/028—Means for achieving greater mobility of the string bed
    • 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
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
    • 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
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Definitions

  • the invention relates to a ball impact device, in particular tennis, squash or badminton rackets, according to the preamble of patent claim 1.
  • plastic ball impact devices have a head frame with a hollow profile, in which through holes are drilled. Through these holes, the continuous string is stretched crosswise in loops. It is known that the through holes on the one hand mechanically weaken the head frame and on the other hand scrub the string or string sections, whereby they can tear there under heavy load. Therefore, the through holes are provided with single eyelets or ⁇ senb species of a soft thermoplastic material.
  • racquets with a median strip of thermoplastic material whose hardness is less than or equal to the hardness of the string.
  • Hollow profiles of fiber-reinforced plastic are integrally formed on both sides of the median strip.
  • the through holes are drilled or prefabricated in the median strip, e.g. with injection molded or pressed channels.
  • EP-A-0142286 discloses a tennis racket which is manufactured by an injection molding process and which has formed a wire with rectangular eyelets in which the string is stretched crosswise.
  • the rectangular eyelets are arranged in the plane of the striking surface. Since the head frame is pear-shaped and the rectangular eyelets are arranged with the upper edges approximately parallel to the inside of the head frame, the string is pulled when stringing either in the left or right corner of the respective eyelets. Therefore, it is difficult, if not impossible, to achieve a uniform tension of the tennis racket.
  • the respective string sections are not all in the same plane because they are pulled around the eyes and thus a stringing or striking surface, which is exactly plane-parallel to the head frame, can hardly be reached.
  • the present invention is based on the object to improve a ball impact device of the aforementioned type so that a uniform covering of the head frame is obtained, making it irrelevant whether the ball is hit in the middle or at the ends of the racket.
  • FIG. 1 shows a detail of a first head frame of a tennis racket
  • FIG. 2 shows a cross section through the head frame according to the line A-A in Fig. 1st
  • FIG. 3 shows a cross section through the head frame in the region of the so-called heart piece
  • Fig. 7 is a perspective view of a section of a second
  • Fig. 8 is a schematic representation of a conventional tennis racket in the ball acceptance
  • Fig. 9 is a schematic representation of a tennis racket according to the invention in the ball acceptance.
  • FIG 1 is purely schematic a section of a head frame 1 of a known tennis racket with four formed as loops holding elements 2 and each clamped in two adjacent eyelets strings 3 and 3 '.
  • the eyelets 2 are attached to the head frame 1, that the annular surface of the eyelets 2 is substantially perpendicular to the frame plane 4, in which the fabric of the tennis racket is.
  • Figure 2 shows a cross section through the head frame 1 along the line AA in Fig. 1.
  • the head frame 1 is hollow with a on the inner side a circumferential annular sector-shaped shallow groove 5, which has a perpendicular thereto introduced bore 6, which for receiving an eyelet 2 is used.
  • FIG. 3 shows the head frame 1 in the region of the so-called heart of the tennis racket, in which the two frame parts 7 have a smaller diameter and these frame parts 7 pinch an H-shaped middle part 8, which also has a similar annular sector-shaped shallow groove 5 'and a bore 6'. has for receiving an eyelet.
  • FIG. 4 shows an oval eyelet 2A, FIG. 5 an elliptical eyelet 2B and FIG. 6 a circular eyelet 2C.
  • the shank 9 of these eyelets 2A to 2C is provided with a helical coil 10 and a front tip 11, respectively, for easier insertion into the bore 6.
  • Figure 7 shows a second variant of a head frame 13, which is also hollow and has a circular sector-shaped shallow groove 14.
  • head frame retaining elements are also provided here as arcuate items or bracket 15 formed, which have a circular sector-shaped central portion 16 and two curved legs 17, which corresponds to the curvature of the head frame 13 in the region of the upper inner and lower inner edge.
  • the bracket 15 forms with the flat groove 14 an oval opening 18 through which the string 19 of the fabric is passed.
  • the brackets 15 are fully integrated in the head frame 13, which is produced by lamination with so-called prepregs or in an injection molding process.
  • FIG. 8 now shows a frame cutout 20 of a conventional tennis racket, with a string covering by through holes provided in the head frame (not shown). Characterized that the string 21 is fixed at its end 22 on the head frame 20, a ball striking the string will deflect the head frame, so that the ball does not jump perpendicular to the racket plane (resting state), but at an angle of about 80 °. A professional tennis player can compensate for such a deflection of the head frame 20 with the wrist. To accurately determine the direction of the ball and the speed of the ball, it takes daily practice and a good eye, which only tennis players in the upper class succeeds.
  • the head frame 1 or 13 of the tennis racket described here is injection-molded from a suitable fiber-reinforced plastic.
  • the eyelets 2 and bracket 15 are optionally made of fiber-reinforced plastic, metal such as titanium, steel, non-ferrous metal, light metal such as aluminum or their alloys, or made of a composite of these materials.
  • the head frame can also be designed aerodynamically cheaper.

Abstract

A novel ball-striking implement, in particular tennis, squash or badminton racquet, is described, with a head frame (1; 13) which comprises an impact surface, and with a stem which is integrally formed thereon and has a handle, wherein the impact surface is determined by at least one string (3; 19) which is stretched crosswise and which forms string sections fastened to the head frame substantially parallel to one another. The string sections are guided in holding elements (2; 15) on the inside of the head frame in such a manner that the string sections lie in a single plane forming the striking surface.

Description

Ballschlaggerät Ball striker
Die Erfindung betrifft ein Ballschlaggerät, insbesondere Tennis-, Squash- oder Badminton-Schläger, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a ball impact device, in particular tennis, squash or badminton rackets, according to the preamble of patent claim 1.
Herkömmliche, aus Kunststoff bestehende Ballschlaggeräte weisen einen Kopfrahmen mit einem Hohlprofil auf, in welchen Durchgangslöcher gebohrt sind. Durch diese Durchganglöcher wird die durchgehende Saite kreuzweise in Schlaufen gespannt. Es ist bekannt, dass die Durchgangslöcher einerseits den Kopfrahmen mechanisch schwächen und andererseits die Saite oder Saitenabschnitte scheuern, wodurch diese bei grosser Belastung dort reissen können. Deshalb werden die Durchgangslöcher mit Einzelösen oder Ösenbändern aus einem weichen thermoplastischen Kunststoff versehen.Conventional, plastic ball impact devices have a head frame with a hollow profile, in which through holes are drilled. Through these holes, the continuous string is stretched crosswise in loops. It is known that the through holes on the one hand mechanically weaken the head frame and on the other hand scrub the string or string sections, whereby they can tear there under heavy load. Therefore, the through holes are provided with single eyelets or Ösenbändern of a soft thermoplastic material.
Bekannt sind auch Schläger mit einem Mittelstreifen aus thermoplastischem Kunststoff, dessen Härte kleiner oder gleich der Härte der Saite ist. An den Mittelstreifen sind beiderseits Hohlprofile aus faserverstärktem Kunststoff angeformt. Die Durchgangslöcher werden dabei in den Mittelstreifen gebohrt oder vorgefertigt, z.B. mit im Spritzgussverfahren gefertigten oder gepressten Kanälen.Also known are racquets with a median strip of thermoplastic material whose hardness is less than or equal to the hardness of the string. Hollow profiles of fiber-reinforced plastic are integrally formed on both sides of the median strip. The through holes are drilled or prefabricated in the median strip, e.g. with injection molded or pressed channels.
Um diese Nachteile zu verhindern ist aus EP-A-0142286 ein Tennisschläger bekannt, der in einem Spritzgussverfahren hergestellt ist und einen Draht mit rechteckförmigen Ösen eingeformt hat, in welche die Saite kreuzweise gespannt ist. Die rechteckförmigen Ösen sind dabei in der Ebene der Schlagfläche ange- ordnet. Da der Kopfrahmen birnenförmig ausgebildet ist und die rechteckförmigen Ösen mit der oberen Kanten etwa parallel zur Innenseite des Kopfrahmens angeordnet sind, wird die Saite beim Bespannen entweder in die linke oder rechte Ecke der jeweiligen Ösen gezogen. Deswegen ist es schwierig, wenn nicht unmöglich, um eine gleichmässige Bespannung des Tennisschlägers zu errei- chen. Ferner liegen die jeweiligen Saitenabschnitte dadurch nicht alle in derselben Ebene, da sie um die Ösen herum gezogen werden und somit eine Bespannung oder Schlagfläche, welche genau planparallel zum Kopfrahmen ist, kaum zu erreichen ist.In order to avoid these disadvantages, EP-A-0142286 discloses a tennis racket which is manufactured by an injection molding process and which has formed a wire with rectangular eyelets in which the string is stretched crosswise. The rectangular eyelets are arranged in the plane of the striking surface. Since the head frame is pear-shaped and the rectangular eyelets are arranged with the upper edges approximately parallel to the inside of the head frame, the string is pulled when stringing either in the left or right corner of the respective eyelets. Therefore, it is difficult, if not impossible, to achieve a uniform tension of the tennis racket. Furthermore, the respective string sections are not all in the same plane because they are pulled around the eyes and thus a stringing or striking surface, which is exactly plane-parallel to the head frame, can hardly be reached.
Der vorliegenden Erfindung liegt nun die Aufgabe zugrunde, ein Ballschlaggerät der vorgenannten Art so zu verbessern, dass eine gleichmässige Bespannung des Kopfrahmens erhalten wird, wodurch es unerheblich ist, ob der Ball in der Mitte oder an den Enden des Schlägers getroffen wird.The present invention is based on the object to improve a ball impact device of the aforementioned type so that a uniform covering of the head frame is obtained, making it irrelevant whether the ball is hit in the middle or at the ends of the racket.
Diese Aufgabe wird durch ein Ballschlaggerät mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a ball impact device with the features of claim 1.
Weitere Vorteile der Erfindung folgen aus den abhängigen Patentansprüchen und aus der nachfolgenden Beschreibung, in welcher die Erfindung anhand eines in den schematischen Zeichnungen dargestellten Ausführungsbeispieles näher er- läutert wird. Es zeigt:Further advantages of the invention follow from the dependent patent claims and from the following description, in which the invention is explained in more detail with reference to an exemplary embodiment illustrated in the schematic drawings. It shows:
Fig. 1 einen Ausschnitt eines ersten Kopfrahmens eines Tennisschlägers,1 shows a detail of a first head frame of a tennis racket,
Fig. 2 einen Querschnitt durch den Kopfrahmen gemäss der Linie A-A in Fig. 12 shows a cross section through the head frame according to the line A-A in Fig. 1st
Fig. 3 einen Querschnitt durch den Kopfrahmen im Bereich des sogenannten Herzstückes,3 shows a cross section through the head frame in the region of the so-called heart piece,
Fig. 4 bis 6 verschiedene Ausführungen der eingesetzten Ösen,4 to 6 different versions of the eyelets used,
Fig. 7 eine perspektivische Darstellung eines Ausschnittes eines zweitenFig. 7 is a perspective view of a section of a second
Kopfrahmens,Head frame,
Fig. 8 eine schematische Darstellung eines herkömmlichen Tennisschlägers bei der Ballannahme, und Fig. 9 eine schematische Darstellung eines erfindungsgemässen Tennisschlägers bei der Ballannahme.Fig. 8 is a schematic representation of a conventional tennis racket in the ball acceptance, and Fig. 9 is a schematic representation of a tennis racket according to the invention in the ball acceptance.
In den Figuren sind für dieselben Elemente jeweils dieselben Bezugszeichen ver- wendet worden und erstmalige Erklärungen betreffen alle Figuren, wenn nicht ausdrücklich anders erwähnt.In the figures, the same reference numerals have been used for the same elements and first explanations relate to all figures, unless expressly stated otherwise.
In der Figur 1 ist rein schematisch einen Ausschnitt eines Kopfrahmens 1 eines an sich bekannten Tennisschlägers mit vier als Ösen ausgebildeten Halteelementen 2 und jeweils in zwei benachbarten Ösen eingespannte Saiten 3 und 3'. Wie ersichtlich sind die Ösen 2 so am Kopfrahmen 1 befestigt, dass die Ringfläche der Ösen 2 im wesentlichen senkrecht zur Rahmenebene 4, in welchem die Bespannung des Tennisschlägers liegt.In the figure 1 is purely schematic a section of a head frame 1 of a known tennis racket with four formed as loops holding elements 2 and each clamped in two adjacent eyelets strings 3 and 3 '. As can be seen, the eyelets 2 are attached to the head frame 1, that the annular surface of the eyelets 2 is substantially perpendicular to the frame plane 4, in which the fabric of the tennis racket is.
Figur 2 zeigt einen Querschnitt durch den Kopfrahmen 1 gemäss der Linie A-A in Fig. 1. Wie deutlich erkennbar ist der Kopfrahmen 1 hohl ausgebildet mit einer auf der innenliegenden Seite eine umlaufende ringsektorförmige flache Nut 5, welche eine senkrecht dazu eingebrachte Bohrung 6 aufweist, welche zur Aufnahme einer Öse 2 dient.Figure 2 shows a cross section through the head frame 1 along the line AA in Fig. 1. As clearly seen, the head frame 1 is hollow with a on the inner side a circumferential annular sector-shaped shallow groove 5, which has a perpendicular thereto introduced bore 6, which for receiving an eyelet 2 is used.
Figur 3 zeigt den Kopfrahmen 1 im Bereich des sogenannten Herzstückes des Tennisschlägers, bei welchem die beiden Rahmenteile 7 einen geringeren Durchmesser aufweisen und diese Rahmenteile 7 ein H-förmiges Mittelteil 8 einklemmen, welches ebenfalls eine ähnliche ringsektorförmige flache Nut 5' und eine Bohrung 6' aufweist zur Aufnahme einer Öse 2.3 shows the head frame 1 in the region of the so-called heart of the tennis racket, in which the two frame parts 7 have a smaller diameter and these frame parts 7 pinch an H-shaped middle part 8, which also has a similar annular sector-shaped shallow groove 5 'and a bore 6'. has for receiving an eyelet. 2
Figur 4 zeigt eine ovalförmige Öse 2A, Figur 5 eine elliptische Öse 2B und Figur 6 eine kreisrunde Öse 2C. Der Schaft 9 dieser Ösen 2A bis 2C ist jeweils mit einer Schraubenwindung 10 und einer vorderen Spitze 1 1 versehen, um einfacher in die Bohrung 6 eingeführt zu werden. Figur 7 zeigt eine zweite Variante eines Kopfrahmens 13, der ebenfalls hohl ausgebildet ist und eine kreissektorförmige flache Nut 14 aufweist. In diesen Kopfrahmen sind ebenfalls Halteelemente vorgesehen, hier als bogenförmige Einzelteile oder Bügel 15 ausgebildet, welche einen kreissektorförmigen Mittelteil 16 und zwei gekrümmte Beine 17 aufweisen, welche der Krümmung des Kopfrahmens 13 im Bereich des oberen inneren und unteren inneren Randes entspricht. Somit bildet der Bügel 15 mit der flachen Nut 14 eine ovale Öffnung 18, durch welche die Saite 19 der Bespannung hindurchgeführt ist. Die Bügel 15 sind voll integriert im Kopfrahmen 13, welcher durch Laminieren mit sogenannten Prepregs oder in einem Spritzgussverfahren hergestellt ist.FIG. 4 shows an oval eyelet 2A, FIG. 5 an elliptical eyelet 2B and FIG. 6 a circular eyelet 2C. The shank 9 of these eyelets 2A to 2C is provided with a helical coil 10 and a front tip 11, respectively, for easier insertion into the bore 6. Figure 7 shows a second variant of a head frame 13, which is also hollow and has a circular sector-shaped shallow groove 14. In this head frame retaining elements are also provided here as arcuate items or bracket 15 formed, which have a circular sector-shaped central portion 16 and two curved legs 17, which corresponds to the curvature of the head frame 13 in the region of the upper inner and lower inner edge. Thus, the bracket 15 forms with the flat groove 14 an oval opening 18 through which the string 19 of the fabric is passed. The brackets 15 are fully integrated in the head frame 13, which is produced by lamination with so-called prepregs or in an injection molding process.
In Figur 8 ist nun einen Rahmenausschnitt 20 eines herkömmlichen Tennisschlägers dargestellt, mit einer Saitenbespannung durch in den Kopfrahmen vorgesehenen Durchbohrungen (nicht ersichtlich). Dadurch dass die Saite 21 an ihrem Ende 22 am Kopfrahmen 20 fixiert ist, wird ein auf die Bespannung treffender Ball den Kopfrahmen auslenken, so dass der Ball nicht senkrecht zur Schlägerebene (Ruhezustand) abspringt, sondern in einem Winkel von etwa 80°. Ein professioneller Tennisspieler kann eine solche Auslenkung des Kopfrahmens 20 mit dem Handgelenk kompensieren. Um die Ballrichtung und die Ballgeschwindigkeit genau zu bestimmen, braucht es tagtägliche Übung und ein gutes Augenmass, was nur Tennisspieler in der oberen Klasse gelingt.FIG. 8 now shows a frame cutout 20 of a conventional tennis racket, with a string covering by through holes provided in the head frame (not shown). Characterized that the string 21 is fixed at its end 22 on the head frame 20, a ball striking the string will deflect the head frame, so that the ball does not jump perpendicular to the racket plane (resting state), but at an angle of about 80 °. A professional tennis player can compensate for such a deflection of the head frame 20 with the wrist. To accurately determine the direction of the ball and the speed of the ball, it takes daily practice and a good eye, which only tennis players in the upper class succeeds.
In Figur 9 ist nun der Kopfrahmen 1 des Tennisschlägers gemäss der vorliegenden Erfindung dargestellt, wobei das eingespannte Ende 25 der Saite 26 im Bügel 15 eine seitliche Bewegung macht, welche durch den Aufprall des Tennisballs verursacht wird. Dadurch wird die Energie des Tennisballs nunmehr von der Bespannung aufgefangen und nicht mehr durch eine Auslenkung des Kopfrahmens wie in Figur 8. Die ganze Bespannung oder Saitenbett wird somit seitlich ausgelenkt, wodurch eine viel präzisere Ballkontrolle möglich ist, da die Abprall- richtung stets senkrecht zur Schlägerebene ist und somit die Richtung des Balles mit einer ganz geringen Streubreite vom Tennisspieler beherrscht werden kann. Es ermöglicht Tennisspieler von jeder Spielklasse ohne grossen Kraftaufwand eine exakte Ballführung. Eine solche Bespannung hat den weiteren Vorteil, dass durch die seitliche Auslenkung der Saiten die Vibrationen des Kopfrahmens stark reduziert werden.In Figure 9, the head frame 1 of the tennis racket according to the present invention is now shown, wherein the clamped end 25 of the string 26 in the bracket 15 makes a lateral movement, which is caused by the impact of the tennis ball. As a result, the energy of the tennis ball is now absorbed by the fabric and no longer by a deflection of the head frame as in Figure 8. The whole string or string bed is thus deflected laterally, whereby a much more precise ball control is possible because the rebound direction is always perpendicular to Racket level and thus the direction of the ball can be controlled with a very small spread by the tennis player. It allows tennis players of every league without much effort an exact ball guide. Such a covering has the further advantage that the vibrations of the head frame are greatly reduced by the lateral deflection of the strings.
Der Kopfrahmen 1 bzw. 13 des hier beschriebenen Tennisschlägers ist im Spritz- guss aus einem geeigneten faserverstärkten Kunststoff hergestellt. Die Ösen 2 bzw. Bügel 15 sind wahlweise aus faserverstärktem Kunststoff, Metall wie beispielsweise Titan, Stahl, Buntmetall, Leichtmetall wie Aluminium oder deren Legierungen, oder aus einem Verbund dieser Materialien hergestellt. Dadurch kann der Kopfrahmen auch aerodynamisch günstiger gestaltet sein. The head frame 1 or 13 of the tennis racket described here is injection-molded from a suitable fiber-reinforced plastic. The eyelets 2 and bracket 15 are optionally made of fiber-reinforced plastic, metal such as titanium, steel, non-ferrous metal, light metal such as aluminum or their alloys, or made of a composite of these materials. As a result, the head frame can also be designed aerodynamically cheaper.

Claims

Patentansprüche claims
1. Ballschlaggerät, insbesondere Tennis-, Squash- oder Badminton-Schläger, mit einem eine Schlagfläche umfassenden Kopfrahmen (1 ; 13) sowie einem daran angeformten Schaft mit Griff, wobei die Schlagfläche durch mindestens eine über Kreuz gespannte Saite (3; 19) bestimmt ist, welche im wesentlichen parallel zueinander am Kopfrahmen befestigte Saitenabschnitte bildet, dadurch gekennzeichnet, dass die Saitenabschnitte in Halteelementen (2; 15) auf der Innenseite des Kopfrahmens derart geführt sind, dass die Saitenabschnitte in einer einzigen, die Schlagfläche bildenden1. Ball impact device, in particular tennis, squash or badminton rackets, comprising a head frame comprising a striking surface (1, 13) and a shaft with handle formed thereon, wherein the striking surface is determined by at least one cross-tensioned string (3; is, which forms substantially parallel to each other on the head frame mounted string sections, characterized in that the string sections are guided in holding elements (2, 15) on the inside of the head frame such that the string sections in a single, forming the club face
Ebene liegen.Lie flat.
2. Ballschlaggerät nach Anspruch 1 , dadurch gekennzeichnet, dass die Halteelemente (2) als Einzelteile mit einem Schaft (9) und einem Ring ausgebildet sind, welche mit der Ringfläche im wesentlichen senkrecht zur Schlagfläche am Kopfrahmen (1 ) befestigt sind.2. Ball impact device according to claim 1, characterized in that the holding elements (2) are formed as individual parts with a shaft (9) and a ring, which are fixed to the annular surface substantially perpendicular to the club face on the head frame (1).
3. Ballschlaggerät nach Anspruch 2, dadurch gekennzeichnet, dass der Ring kreisrund, oval oder ellipsenförmig ausgebildet ist.3. Ball impact device according to claim 2, characterized in that the ring is circular, oval or elliptical.
4. Ballschlaggerät nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Kopfrahmen (1 ) aus Kunststoff gefertigt und hohl ausgebildet ist und eine innere umlaufende Nut (5) aufweist, in welchem Durchbohrungen zur Aufnahme des Schaftes (9) der Halteelemente (2) angebracht sind.4. Ball impact device according to claim 2 or 3, characterized in that the head frame (1) is made of plastic and hollow and has an inner circumferential groove (5), in which through holes for receiving the shank (9) of the holding elements (2). are attached.
5. Ballschlaggerät nach Anspruch 2, dadurch gekennzeichnet, dass der Kopfrahmen (1 ) im Bereich des Herzstückes aus zwei ovalförmigen Rohrkörper (7) besteht, die einen H-förmigen Mittelteil (8) einschliessen, welches Mittel- teil (8) Sackbohrungen (6') zur Aufnahme des Schaftes (9) der Halteelemente (2) aufweist.5. Ball impact device according to claim 2, characterized in that the head frame (1) in the region of the heart consists of two oval-shaped tubular body (7) which enclose an H-shaped central part (8), which central part (8) blind holes (6 ') for receiving the shank (9) of the holding elements (2).
6. Ballschlaggerät nach Anspruch 1 , dadurch gekennzeichnet, dass mindestens der Kopfrahmen (13) aus einem Kunststoff gefertigt ist und die Halteelemente (15) als bogenförmige Einzelteile derart im Kopfrahmen eingebet- tet sind, dass die Bogenfläche im wesentlichen senkrecht zur Schlagfläche steht.6. Ball impact device according to claim 1, characterized in that at least the head frame (13) is made of a plastic and the holding elements (15) embedded as arcuate individual parts in the head frame such tet are that the arc surface is substantially perpendicular to the clubface.
7. Ballschlaggerät nach Anspruch 6, dadurch gekennzeichnet, dass im Kopfrahmen (13) eine innere ovalförmige Nut (14) aufweist, welche zusammen mit dem bogenförmigen Halteelement (15) eine ovale Öffnung zur Aufnahme der Saite (19) der Bespannung formt. 7. Ball impact device according to claim 6, characterized in that in the head frame (13) has an inner oval-shaped groove (14) which forms an oval opening for receiving the string (19) of the fabric together with the arcuate holding element (15).
EP08763313A 2007-07-04 2008-06-12 Ball-striking implement Not-in-force EP2164579B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10752007 2007-07-04
PCT/IB2008/052325 WO2009004514A1 (en) 2007-07-04 2008-06-12 Ball-striking implement

Publications (2)

Publication Number Publication Date
EP2164579A1 true EP2164579A1 (en) 2010-03-24
EP2164579B1 EP2164579B1 (en) 2013-01-16

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EP08763313A Not-in-force EP2164579B1 (en) 2007-07-04 2008-06-12 Ball-striking implement

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US (2) US8333672B2 (en)
EP (1) EP2164579B1 (en)
CN (1) CN101687109B (en)
WO (1) WO2009004514A1 (en)

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US8333672B2 (en) * 2007-07-04 2012-12-18 Tec Sportmanagement Ag Ball-striking implement
CN102688586A (en) * 2011-03-25 2012-09-26 梅显道 Novel badminton racket
CN112386888B (en) * 2020-10-26 2022-01-18 富阳双龙防火门有限公司 Tennis racket with adjustable string tightness

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Also Published As

Publication number Publication date
US20100190591A1 (en) 2010-07-29
CN101687109A (en) 2010-03-31
US20120322590A1 (en) 2012-12-20
US8574103B2 (en) 2013-11-05
EP2164579B1 (en) 2013-01-16
CN101687109B (en) 2012-09-19
WO2009004514A1 (en) 2009-01-08
US8333672B2 (en) 2012-12-18

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