EP0291576B1 - Handle for tennis rackets or the like - Google Patents

Handle for tennis rackets or the like Download PDF

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Publication number
EP0291576B1
EP0291576B1 EP87117932A EP87117932A EP0291576B1 EP 0291576 B1 EP0291576 B1 EP 0291576B1 EP 87117932 A EP87117932 A EP 87117932A EP 87117932 A EP87117932 A EP 87117932A EP 0291576 B1 EP0291576 B1 EP 0291576B1
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EP
European Patent Office
Prior art keywords
handle
handle according
cross
coating
silicone rubber
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EP87117932A
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German (de)
French (fr)
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EP0291576A3 (en
EP0291576A2 (en
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Horst Kleylein
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Individual
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Individual
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Priority to AT87117932T priority Critical patent/ATE59973T1/en
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Publication of EP0291576A3 publication Critical patent/EP0291576A3/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
    • A63B49/08—Frames with special construction of the handle
    • 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
    • A63B60/06—Handles
    • A63B60/08—Handles characterised by the material
    • 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
    • A63B60/06—Handles
    • A63B60/10—Handles with means for indicating correct holding positions
    • 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
    • A63B60/06—Handles
    • A63B60/12—Handles contoured according to the anatomy of the user's hand

Definitions

  • the invention relates to a handle for tennis or squash rackets or the like, which has a round edge-free cross section in the hand region and a convex thickening which merges into a concave taper at both ends.
  • a handle for sports equipment of this type is known, for example, from the German usage pattern 84 11 884.9 or the corresponding German laid-open specification 34 14293. These publications also show that at least the surface layer of the handle should consist of skin-friendly visco-elastic silicone rubber or a material with similar properties.
  • the invention has for its object to further optimize the handles for sports equipment known from the cited references.
  • a combination of several features is proposed, namely that the handle in the hand area has a rounded, edge-free cross-section and a convex cross-sectional thickening that merges into a concave cross-sectional taper at both ends and the other that the two concave cross-sectional tapering each merge into a scanning area with a polygonal, in particular octagonal, cross section.
  • the scanning areas should preferably each have two mutually opposite main surfaces, which are adjoined by narrow secondary surfaces on each long side.
  • Sports equipment of the type specified here for example tennis rackets equipped with the handle described, are preferably manufactured in one piece, in which case the handle then integrally merges into the handle of the sports equipment. If necessary, an end cap can be placed on the end of the handle, which forms the sensing area provided there.
  • the handle as a whole can be made of foamed and optionally reinforced by inserts thermoplastic or hardened material such as rubber, plastic or in particular silicone rubber. In this way it is possible to make the handle particularly light and still give it the required strength. Fibers including glass fibers or carbon fibers can be considered as inserts, but also wires or profiles made of metal or harder, in particular more rigid plastics.
  • the handles can be created by casting or blowing. Of course, it is also possible to dispense with the foaming of the materials and to use compact materials instead.
  • the handle can consist of two plastic half-shells which are mirror images of a plane of symmetry running in the direction of their longitudinal axis. These plastic half-shells can easily be placed on handles of any shape and glued there. It must be emphasized that the use of such half shells is not limited to the retrofitting of sports equipment that has already been produced. Plastic half-shells of this type can also be used in the production of new sports equipment, if this is desired for any reason, for example manufacturing reasons.
  • the handle at least in the area of the convex thickening, has a roughened coating of viscoelastic silicone rubber on the surface.
  • viscoelastic silicone rubber for producing the handles or the handle cover.
  • the cover should have knobs, grooves or the like. have and are made particularly easy to grip in this way.
  • it has been found that it is much more advantageous to merely roughen the coating, that is to say to dispense entirely with the knobs or grooves mentioned.
  • Such a roughened cover gives a terry-like feel and has proven to be optimal.
  • the handle can be constructed in two or more layers, for example one or more inner layers of hard plastic foam and an outer layer of preferably roughened silicone rubber.
  • the design of the hand area is particularly important. It has been shown here that it is important to make the hand area oval and that the ratio of the large diameter to the small diameter of this oval shape should be between 1.10 and 1.30. If the handle is to be provided with a roughened silicone rubber cover, it must be ensured that the above-mentioned conditions are present even after the silicone rubber cover has been applied, so that they have an optimal effect in the manner mentioned. Incidentally, it has been shown that such a coating made of roughened silicone rubber can be applied easily and advantageously by starting with appropriately dimensioned hose pieces made of this material, which for application in a suitable solvent for a few minutes, for example dichloromethane, chloroform or the like. be placed.
  • the silicone rubber swells and can then be easily pushed over the handle of the racket.
  • the solvent evaporates again, the rubber shrinking without changing its properties and firmly adhering to the contours of the handle.
  • these tactile areas should each have two opposing wide surfaces (main surfaces), to which narrow surfaces (secondary surfaces) adjoin on each long side.
  • the best dimensioning can be that the main areas are 15-25 mm wide and the secondary areas are 10-15 mm wide.
  • These dimensions mentioned should preferably not be combined with one another in any way, but in such a way that with a width of the main area of 25 mm the secondary area should be 15 mm and with a width of the main area of 15 mm the secondary areas should be 10 mm wide.
  • the roughened surface of the handle or handle cover is of essential importance in the context of the present invention.
  • One way of producing such a coating is to produce the coating from an elastomeric material, preferably silicone rubber, in which particulate inclusions are embedded.
  • These particulate inclusions can also consist of plastic, for example of silicone rubber that has been hardened by crosslinking. It is advantageous if the particle size of the inclusions is 1-2.5 mm and the content of embedded particles is 10-40% by weight. It has proven particularly favorable if the embedded particles have an elongated shape and if the ratio of the width to the length of the particles is 1: 2-3. It has been proposed to make silicone rubber coatings with embedded particles.
  • the stored, hardened silicone rubber particles should form a carefully selected size fraction, which is in the size range of 0.1 to 1 mm.
  • this size range is not as optimal as it initially seemed.
  • the elongated particles of the size range specified here are far more advantageous. The particles align themselves when processing the mass into tubes, foils or the like. so that they are approximately parallel to the surface and give the material a terry-like appearance.
  • the desired grip surface can be produced in that the cover consists of a piece of tubing or a winding tape made of the above-mentioned roughened material.
  • the material can also be applied by spraying or sintering, the latter, for example, in a fluidized bed sintering process. Finally, it can also be poured on.
  • the handle from any material, preferably plastic, and then to coat it superficially with lumpy material, for example the shredded thermoplastic particles already mentioned. These particles can then be glued or sintered on. A thin skin made of thermoplastic material, preferably silicone rubber, is then pulled over this handle, which is thus prepared, and this is shrunk on. When shrinking, the skin clings tightly, with the previously applied particles pressing into the skin. The desired product is also created in this way.
  • the handle cover is porous.
  • a porous coating can be made from silicone rubber (but also from other thermoplastic materials) by stretching the coating in at least one direction.
  • Such coatings are particularly suitable in the present case, since sufficient shrinkage can easily be achieved when shrinking on hose pieces, but also when wrapping a tape around the handle.
  • the tennis racket shown in Fig. 1 consists of the racket frame (1), the handle (3) from there finally passes into the handle (4) via the heart (2).
  • the racket frame, the centerpiece and the handle are normally made of glass fiber reinforced polyester resin or comparable materials.
  • the racket frame is covered in a known manner with a grid, not shown in the drawing.
  • the handle (4) has a rounded, edge-free cross-section in the hand area (5) and a convex cross-sectional thickening (6) which merges into a concave cross-sectional taper (7, 8) at each end. These two tapers each merge into an octagonal sensing area (9 and 10), of which the sensing area (9) is designed to be significantly longer than the sensing area (10) located at the rear end.
  • the handle is holistic, that is made from one piece with the handle (3) of the sports device.
  • the handle consists of two plastic half-shells (11 and 12) which are mirror images of a plane of symmetry extending in the direction of the longitudinal axis. This plane of symmetry naturally coincides with the groove (13) in which the two half-shells (11 and 12) abut.
  • the drawing shows that the handle is oval in the entire hand area.
  • the ratio of the large diameter to the small diameter should be between 1.10 and 1.30 at every point in the hand area.
  • the areas of the scanning area are also designed in a special way. 2-4 show in particular that the scanning areas (9 and 10) have wider main areas (14 and 15) and adjacent narrower secondary areas (16-19). It has proven to be optimal if the wide dimensions of these areas are as follows:
  • the length of the surfaces is not critical; it depends on the nominal size of the handle and can vary as desired.

Abstract

The handle (4) for sports equipment, in particular for tennis or squash rackets, has a rounded edge-free cross-section in the hand region and a convex cross-sectional thickening (6) which merges at both its ends into a concave cross-sectional taper (7, 8). The two concave cross-sectional tapers (7, 8) each merge into a touch region (9, 10) of polygonal, in particular octagonal cross-section. The handle can be produced integrally or in the form of two shells which can be glued over the end of any desired handle. The handle is preferably fitted at least in the region of the convex thickening with a coating of visco-elastic silicone rubber which is roughened on the surface. <IMAGE>

Description

Die Erfindung betrifft Griff-für Tennis- oder Squash-Schläger od.gl., der im Handbereich einen runden kantenfreien Querschnitt sowie eine konvexe Verdickung aufweist, die an ihren beiden Enden in je eine konkave Verjüngung übergeht. Ein Griff für Sportgeräte dieser Art ist beispielsweise aus dem deutschen Gebrauschsmuster 84 11 884.9 oder der entsprechenden deutschen Offenlegungsschrift 34 14293 bekannt. Aus diesen Veröffentlichungen geht auch hervor, daß zumindest die Oberflächenschicht des Griffes aus hautfreundlichem visko-elastischem Silikonkautschuk oder einem Werkstoff mit ähnlichen Eigenschaften bestehen soll.The invention relates to a handle for tennis or squash rackets or the like, which has a round edge-free cross section in the hand region and a convex thickening which merges into a concave taper at both ends. A handle for sports equipment of this type is known, for example, from the German usage pattern 84 11 884.9 or the corresponding German laid-open specification 34 14293. These publications also show that at least the surface layer of the handle should consist of skin-friendly visco-elastic silicone rubber or a material with similar properties.

Umfangreiche Versuche zur Weiterentwicklung dieses vorbekannten Griffes haben gezeigt, daß die angestrebte Anspassung der Grifform an die anatomischen und physiologischen Eigenschaften der Grifhand auf dem vorgezeichneten Wege tatsächlich optimal erreicht werden kann. Die erwähnte Ausgestaltung der Griffes führt zu einer enormen Entlastung der Armmuskulatur, die der sonst gefürchteten Verkrampfung und den daraus sich ergebenden Läsionen nicht nur vorbeugt, sondern die auch geeignet ist, eingetretene Schäden nachhaltig zu beheben.Extensive tests for the further development of this previously known handle have shown that the desired adaptation of the handle shape to the anatomical and physiological properties of the handle hand can actually be optimally achieved in the prescribed way. The aforementioned design of the handle leads to an enormous relief of the arm muscles, which not only prevents the otherwise feared cramping and the resulting lesions, but is also suitable for the long-term repair of damage.

Inzwischen wurden weitere Versuche in der angegebenen Richtung durchgeführt und es wurden erneut Verbesserungen und Optimierungen erzielt, die sowohl die Muskel- die Muskelentlastung infolge der Griffausgestaltung wie auch die Orientierung betreffen, die der Spieler während des Spieles bezüglich der Lage des Sportgerätes, also beispielsweise des Tennisschlägers, hat. Speziell in Bezug auf diesen zuletzt genannten Vorteil hat sich gezeigt, daß es sowohl auf die spezielle Ausgestaltung des Handbereiches des Griffes ankommt, wie auch auf die Ausgestaltung der Bereiche, die sich unmittelbar an den Griff anschließen. Es ist erstaunlich, wie sehr es bei Griffen dieser Art möglich ist, durch verhältnismäßig kleine Variationen eine weitere Optimierung zu erreichen.In the meantime, further attempts have been carried out in the specified direction and improvements and optimizations have again been achieved which relate both to muscle and muscle relief as a result of the handle design and to the orientation which the player has during the game with regard to the position of the sports equipment, for example the tennis racket , Has. Especially with regard to this last-mentioned advantage, it has been shown that both the special design of the hand area of the handle is important, as well as the design of the areas that directly adjoin the handle. It is astonishing how much it is possible with handles of this kind to achieve further optimization by means of relatively small variations.

Der Erfindung liegt die Aufgabe zugrunde, die aus den genannten Literaturstellen vorbekannten Griffe für Sportgeräte weiter zu optimieren. Zur Lösung dieser Aufgabe wird eine Kombination mehrerer Merkmale vorgeschlagen, nämlich einmal daß der Griff im Handbereich einen abgerundeten, kantenfreien Querschnitt sowie eine konvexe Querschnittsverdickung aufweist, die an ihren beiden Enden in je eine konkave Querschnittsverjüngung übergeht und zum anderen, daß die beiden konkaven Querschnittsverjüngungen jeweils in einen Tastbereich mit vieleckigem, insbesondere achteckigem Querschnitt übergehen. Die Tastbereiche sollen dabei vorzugsweise jeweils zwei einander gegenüberliegende Hauptflächen aufweisen, an die sich an jeder Längsseite schmale Nebenflächen anschließen. Sportgeräte der hier angegebenen Art, also beispielsweise Tennisschläger, die mit dem beschriebenen Griff ausgestattet sind, werden vorzugsweise einstückig hergestellt, wobei dann also der Griff einstückig in den Stiel des Sportgerätes übergeht. Gegebenenfalls kann auf das Ende des Griffes noch eine Abschlußkappe aufgesetzt sein, die den dort vorgesehenen Tastbereich bildet.The invention has for its object to further optimize the handles for sports equipment known from the cited references. To solve this problem, a combination of several features is proposed, namely that the handle in the hand area has a rounded, edge-free cross-section and a convex cross-sectional thickening that merges into a concave cross-sectional taper at both ends and the other that the two concave cross-sectional tapering each merge into a scanning area with a polygonal, in particular octagonal, cross section. The scanning areas should preferably each have two mutually opposite main surfaces, which are adjoined by narrow secondary surfaces on each long side. Sports equipment of the type specified here, for example tennis rackets equipped with the handle described, are preferably manufactured in one piece, in which case the handle then integrally merges into the handle of the sports equipment. If necessary, an end cap can be placed on the end of the handle, which forms the sensing area provided there.

Für die Herstellung des Griffes gibt es mehrere Möglichkeiten, die hier vorgeschlagen werden. So kann der Griff als Ganzes aus aufgeschäumtem und gegebenenfalls durch Einlagen verstärktem thermoplastischem oder ausgehärtetem Werkstoff wie Kautschuk, Kunststoff oder insbesondere Silikongummi bestehen. Auf diese Weise ist es möglich, den Griff besonders leicht zu machen und ihm dennoch die erforderliche Festigkeit zu verleihen. Als Einlagen kommen Fasern einschließlich Glasfasern oder Kohlenstoffasern in Betracht, aber auch Drähte oder Profile aus Metall oder härteren, insbesondere biegefesteren Kunststoffen. Die Griffe können nach dem Gieß- oder Blasverfahren erzeugt werden. Selbstverständlich ist es auch möglich, auf das Ausschäumen der Werkstoffe zu verzichten und stattdessen kompakte Werkstoffe zu verwenden.There are several options for the manufacture of the handle, which are proposed here. Thus, the handle as a whole can be made of foamed and optionally reinforced by inserts thermoplastic or hardened material such as rubber, plastic or in particular silicone rubber. In this way it is possible to make the handle particularly light and still give it the required strength. Fibers including glass fibers or carbon fibers can be considered as inserts, but also wires or profiles made of metal or harder, in particular more rigid plastics. The handles can be created by casting or blowing. Of course, it is also possible to dispense with the foaming of the materials and to use compact materials instead.

Andererseits kann es in gewissen Fällen erwünscht sein, bereits erzeugte Sportgeräte nachträglich mit dem erfindungsgemäßen Griff auszustatten. In solchen Fällen kann der Griff aus zwei Kunststoffhalbschalen bestehen, die spiegelbildlich zu einer in Richtung ihrer Längsachse verlaufenden Symmetrieebene ausgebildet sind. Diese Kunststoffhalbschalen können leicht auf Griffe beliebiger Form aufgesetzt und dort festgeklebt werden. Es muß betont werden, daß die Verwendung derartiger Halbschalen allerdings nicht auf das Nachrüsten bereits erzeugter Sportgeräte beschränkt ist. Auch bei der Neuherstellung von Sportgeräten können solche Kunststoffhalbschalen eingesetzt werden, wenn dies aus irgendwelchen, beispielsweise fabrikatorischen Gründen, erwünscht ist.On the other hand, in certain cases it may be desirable to retrofit sports equipment that has already been produced with the handle according to the invention. In such cases, the handle can consist of two plastic half-shells which are mirror images of a plane of symmetry running in the direction of their longitudinal axis. These plastic half-shells can easily be placed on handles of any shape and glued there. It must be emphasized that the use of such half shells is not limited to the retrofitting of sports equipment that has already been produced. Plastic half-shells of this type can also be used in the production of new sports equipment, if this is desired for any reason, for example manufacturing reasons.

Nun ist es tatsächlich so, daß Tennisschläger mit acht-, eckiger Grifform bekannt sind. Diese vorbekannten Griffe reichen aber über den gesamten Handbereich und wirken gerade dadurch auf die Dauer störend und ermüdend, weil sich bei diesen Griffen nicht vermeiden läßt, daß bei langdauerndem Gebrauch unangenehme Druckstellen im Handinnenbereich auftreten. Bei den vorbekannten Schlägergriffen wurde versucht, diesen Effekt dadurch auszuschalten, daß die Griffe mit Lederband o.dgl. umwickelt werden. In lang ausgedehnten Tests hat sich aber gezeigt, daß es nicht möglich ist, das Auftreten der Druckstellen auf diese Weise völlig zu eliminieren und daß hier eine wesentliche Ursache der entstehenden Verkrampfung liegt. Erfindungsgemäß wird diese Erkenntnis ausgenutzt und es wird deshalb vorgeschlagen, den Griff mit einer Kombination der Merkmale "runder kantenfreier Querschnitt" sowie "konvexe Verdickung ... im Handbereich" und "Übergang der konkaven Verjüngungen in einen achteckigen Tastbereich" auszurüsten.Now it is actually the case that tennis rackets with an octagonal, rectangular handle shape are known. However, these known handles extend over the entire area of the hand and are particularly annoying and tiring in the long run, because with these handles it cannot be avoided that uncomfortable pressure points occur on the inside of the hand during prolonged use. In the case of the known racket handles, attempts have been made to eliminate this effect by the fact that the handles with a leather strap or the like. be wrapped. Long tests have shown, however, that it is not possible to completely eliminate the occurrence of pressure points in this way and that this is a major cause of the resulting cramping. According to the invention, this knowledge is used and it is therefore proposed to equip the handle with a combination of the features "round edge-free cross-section" as well as "convex thickening ... in the hand area" and "transition of the concave tapers into an octagonal touch area".

Eine weitere Verbesserung ergibt sich dadurch, daß der Griff zumindest im Bereich der konvexen Verdickung einen an der Oberfläche aufgerauhten Überzug aus viskoelastischem Silikongummi aufweist. Bereits früher wurde in der Offenlegungsschrift 34 14 293 vorgeschlagen, visko-elastischen Silikongummi zur Herstellung der Griffe oder des Griffüberzuges zu verwenden. Dabei sollte der Überzug Noppen, Rillen o.dgl. aufweisen und auf diese Weise besonders grifffreundlich gemacht werden. Inzwischen hat sich herausgestellt, daß es weitaus vorteilhafter ist, den Überzug lediglich aufzurauhen, also auf die erwähnten Noppen oder Rillen ganz zu verzichten. Ein solcher aufgerauhter Überzug ergibt ein frotteeähnliches Tastgefühl und hat sich als optimal erwiesen. Der Griff kann dabei zwei- oder mehrschichtig aufgebaut sein, wobei beispielsweise eine oder mehrere Innenschichten aus Kunststoffhartschaum vorhanden sind sowie eine äußere Schicht aus vorzugsweise aufgerauhtem Silikongummi.A further improvement results from the fact that the handle, at least in the area of the convex thickening, has a roughened coating of viscoelastic silicone rubber on the surface. It has previously been proposed in laid-open specification 34 14 293 to use visco-elastic silicone rubber for producing the handles or the handle cover. The cover should have knobs, grooves or the like. have and are made particularly easy to grip in this way. In the meantime, it has been found that it is much more advantageous to merely roughen the coating, that is to say to dispense entirely with the knobs or grooves mentioned. Such a roughened cover gives a terry-like feel and has proven to be optimal. The handle can be constructed in two or more layers, for example one or more inner layers of hard plastic foam and an outer layer of preferably roughened silicone rubber.

Wie bereits oben vermerkt, kommt es auf die Ausgestaltung des Handbereiches in besonderem Maße an. Hier hat sich gezeigt, daß es wichtig ist, den Handbereich oval auszubilden, und daß das Verhältnis des großen Durchmessers zum kleinen Durchmesser dieser Ovalform zwischen 1,10 und 1,30 liegen soll. Soll der Griff mit einem aufgerauhten Silikongummiüberzug versehen werden, so ist darauf zu achten, daß diese erwähnten Verhältnisse auch nach dem Anbringen des Silikongummiüberzuges vorhanden sind, damit sie sich in der erwähnten Weise optimal auswirken. Übrigens hat sich gezeigt, daß ein derartiger Überzug aus aufgerauhtem Silikongummi leicht und vorteilhaft aufgebracht werden kann, indem von entsprechend dimensionierten Schlauchstücken aus diesem Werkstoff ausgegangen wird, welche zum Aufbringen einige Minuten in ein geeignetes Lösungsmittel, beispielsweise Dichlormethan, Chloroform o.dgl. gelegt werden. Bei dieser Behandlung quillt der Silikongummi auf und läßt sich dann leicht über den Schlägergriff schieben. Beim Trocknen verdampft das Lösungsmittel wieder, wobei der Gummi-ohne seine Eigenschaften zu verändern-schrumpft und sich fest an die Konturen des Griffes anlegt. Allerdings ist es auch möglich, den Überzug auf andere Weise aufzubringen, beispielsweise durch Aufsprühen, Aufgießen oder Aufsintern.As already noted above, the design of the hand area is particularly important. It has been shown here that it is important to make the hand area oval and that the ratio of the large diameter to the small diameter of this oval shape should be between 1.10 and 1.30. If the handle is to be provided with a roughened silicone rubber cover, it must be ensured that the above-mentioned conditions are present even after the silicone rubber cover has been applied, so that they have an optimal effect in the manner mentioned. Incidentally, it has been shown that such a coating made of roughened silicone rubber can be applied easily and advantageously by starting with appropriately dimensioned hose pieces made of this material, which for application in a suitable solvent for a few minutes, for example dichloromethane, chloroform or the like. be placed. During this treatment, the silicone rubber swells and can then be easily pushed over the handle of the racket. When it dries, the solvent evaporates again, the rubber shrinking without changing its properties and firmly adhering to the contours of the handle. However, it is also possible to apply the coating in another way, for example by spraying, pouring or sintering.

Auch die Ausbildung der Flächen des Tastbereiches ist von großer Bedeutung. Wie bereits gesagt, sollen diese Tastbereiche jeweils zwei einander gegenüberliegende breite Flächen (Hauptflächen) aufweisen, an die sich an jeder Längsseite schmale Flächen (Nebenflächen) anschließen. Als optimale Bemessung kann gelten, daß die Hauptflächen eine Breite von 15-25 mm und die Nebenflächen eine Breite von 10-15 mm aufweisen. Diese genannten Abmessungen sollen vorzugweise nicht in beliebiger Weise miteinander kombiniert werden sondern so, daß bei einer Breite der Hauptfläche von 25 mm die Nebenfläche 15 mm betragen soll und bei einer Breite der Hauptflächen von 15 mm die Nebenflächen 10 mm breit sein sollen.The formation of the areas of the scanning area is also of great importance. As already said, these tactile areas should each have two opposing wide surfaces (main surfaces), to which narrow surfaces (secondary surfaces) adjoin on each long side. The best dimensioning can be that the main areas are 15-25 mm wide and the secondary areas are 10-15 mm wide. These dimensions mentioned should preferably not be combined with one another in any way, but in such a way that with a width of the main area of 25 mm the secondary area should be 15 mm and with a width of the main area of 15 mm the secondary areas should be 10 mm wide.

Wesentliche Bedeutung im Rahmen der vorliegenden Erfindung kommt der aufgerauhten Oberfläche des Griffes oder Griffüberzuges zu. Eine Möglichkeit, einen derartigen Überzug herzustellen, besteht darin, den Überzug aus einem elastomeren Werkstoff, vorzugsweise Silikongummi, herzustellen, in den teilchenförmige Einlagerungen eingebettet sind. Diese teilchenförmigen Einlagerungen können ebenfalls aus Kunststoff bestehen, beispielsweise aus durch Vernetzung ausgehärtetem Silikongummi. Dabei ist es vorteilhaft, wenn die Teilchengröße der Einlagerungen 1-2,5 mm und der Gehalt an eingelagerten Teilchen 10-40 Gew.% beträgt. Als besonders günstig hat es sich erwiesen, wenn die eingelagerten Teilchen eine längliche Form haben und wenn das Verhältnis von Breite zu Länge der Teilchen 1:2-3 beträgt. Es ist bereits vorgeschlagen worden, Überzüge aus Silikongummi mit eingelagerten Teilchen herzustellen. Dabei sollten jedoch die eingelagerten ausgehärteten Silikongummiteilchen eine sorgfältig ausgesuchte Größen-Fraktion bilden, welche im Größenbereich von 0,1 bis 1 mm liegt. Bei weiteren Versuchen hat sich jedoch gezeigt, daß dieser Größenbereich gar nicht so optimal ist, wie es zunächst schien. Insbesondere die hier vorgeschlagenen länglichen Teilchen des oben angegebenen Größenbereiches sind weitaus vorteilhafter. Die Teilchen richten sich beim Weiterverarbeiten der Masse zu Schläuchen, Folien od.dgl. so aus, daß sie angenähert parallel zur Oberfläche liegen und dabei dem Werkstoff ein frotteeähnliches Aussehen verleihen.The roughened surface of the handle or handle cover is of essential importance in the context of the present invention. One way of producing such a coating is to produce the coating from an elastomeric material, preferably silicone rubber, in which particulate inclusions are embedded. These particulate inclusions can also consist of plastic, for example of silicone rubber that has been hardened by crosslinking. It is advantageous if the particle size of the inclusions is 1-2.5 mm and the content of embedded particles is 10-40% by weight. It has proven particularly favorable if the embedded particles have an elongated shape and if the ratio of the width to the length of the particles is 1: 2-3. It has been proposed to make silicone rubber coatings with embedded particles. However, the stored, hardened silicone rubber particles should form a carefully selected size fraction, which is in the size range of 0.1 to 1 mm. However, further experiments have shown that this size range is not as optimal as it initially seemed. In particular, the elongated particles of the size range specified here are far more advantageous. The particles align themselves when processing the mass into tubes, foils or the like. so that they are approximately parallel to the surface and give the material a terry-like appearance.

Die erwünschte Griffoberfläche kann dabei dadurch hergestellt werden, daß der Überzug aus einem Schlauchstück oder einem Wickelband aus dem erwähnten aufgerauhten Material besteht. Das Material kann aber auch, da es noch teilweise thermoplastisch ist, durch Aufspritzen oder Aufsintern, letzteres etwa im Wirbelbett-Sinterverfahren, aufgebracht werden. Es kann aber schließlich auch aufgegossen werden.The desired grip surface can be produced in that the cover consists of a piece of tubing or a winding tape made of the above-mentioned roughened material. However, since it is still partially thermoplastic, the material can also be applied by spraying or sintering, the latter, for example, in a fluidized bed sintering process. Finally, it can also be poured on.

Eine weitere Möglichkeit besteht darin, den Griff zunächst aus einem beliebigen Werkstoff, vorzugsweise Kunststoff, herzustellen und ihn dann oberflächlich mit stückigem Material, beispielsweise den bereits erwähnten zerkleinerten thermoplastischen Teilchen, zu beschichten. Diese Teilchen können dann festgeklebt oder auch aufgesintert werden. Über diesen so vorpräparierten Griff wird dann eine dünne Haut aus thermoplastischem Werkstoff, vorzugsweise Silikongummi, gezogen und dieser aufgeschrumpft. Beim Aufschrumpfen legt sich die Haut eng an, wobei sich die zuvor aufgebrachten Teilchen in die Haut eindrücken. Es entsteht auf diese Weise ebenfalls das gewünschte Produkt.Another possibility is to first manufacture the handle from any material, preferably plastic, and then to coat it superficially with lumpy material, for example the shredded thermoplastic particles already mentioned. These particles can then be glued or sintered on. A thin skin made of thermoplastic material, preferably silicone rubber, is then pulled over this handle, which is thus prepared, and this is shrunk on. When shrinking, the skin clings tightly, with the previously applied particles pressing into the skin. The desired product is also created in this way.

Des weiteren wird vorgeschlagen, daß der Griffüberzug porös ist. Ein derartiger poröser Überzug kann aus Silikongummi (aber auch aus anderen thermoplastischen Werkstoffen) dadurch hergestellt werden, daß der Überzug in wenigstens einer Richtung gedehnt wird. Gerade derartige Überzüge bieten sich im vorliegenden Falle an, da beim Aufschrumpfen von Schlauchstücken, aber auch beim Umwickeln des Griffes mit einem Band leicht eine hinreichende Dehnung verwirklicht werden kann.It is also proposed that the handle cover is porous. Such a porous coating can be made from silicone rubber (but also from other thermoplastic materials) by stretching the coating in at least one direction. Such coatings are particularly suitable in the present case, since sufficient shrinkage can easily be achieved when shrinking on hose pieces, but also when wrapping a tape around the handle.

Die Erfindung wird im folgenden anhand der beigefügten Zeichnung näher erläutert. Es stellen dar:

  • Fig. 1 eine Draufsicht auf einen Tennisschläger, der mit dem erfindungsgemäßen Griff ausgestattet ist;
  • Fig. 2 eine vergrößerte Draufsicht auf den Drittgriff gemäß Fig. 1,
  • Fig. 3 eine perspektivische Ansicht des Griffes gemäß Fig. 2 in ganzheitlicher Form;
  • Fig. 4 eine perspektivische Ansicht des Griffes gemäß Fig. 2, bestehend aus zwei Halbschalen.
The invention is explained below with reference to the accompanying drawings. They represent:
  • Figure 1 is a plan view of a tennis racket equipped with the handle of the invention.
  • 2 is an enlarged plan view of the third handle shown in FIG. 1,
  • 3 shows a perspective view of the handle according to FIG. 2 in a holistic form;
  • Fig. 4 is a perspective view of the handle of FIG. 2, consisting of two half-shells.

Der in Fig. 1 dargestellte Tennisschläger besteht aus dem Schlägerrahmen (1), der über das Herzstück (2) den Stiel (3) von dort schließlich in den Griff (4) übergeht. Der Schlägerrahmen sowie das Herzstück und der Stiel werden normalerweise aus glasfaserverstärktem Polyesterharz oder vergleichbaren Werkstoffen hergestellt. Der Schlägerrahmen ist dabei in bekannter Weise mit einem in der Zeichnung nicht dargestellten Gitter bespannt.The tennis racket shown in Fig. 1 consists of the racket frame (1), the handle (3) from there finally passes into the handle (4) via the heart (2). The racket frame, the centerpiece and the handle are normally made of glass fiber reinforced polyester resin or comparable materials. The racket frame is covered in a known manner with a grid, not shown in the drawing.

Der Griff (4) weist im Handbereich (5) einen abgerundeten kantenfreien Querschnitt sowie eine konvexe Querschnittsverdickung (6) auf, die an ihren beiden Enden in je eine konkave Querschnittsverjüngung (7, 8) übergeht. Diese beiden Verjüngungen gehen nun jeweils in einen achteckigen Tastbereich (9 und 10) über, von denen im dargestellten Ausführungsbeispiel der Tastbereich (9) wesentlich länger ausgebildet ist als der am hinteren Ende befindliche Tastbereich (10).The handle (4) has a rounded, edge-free cross-section in the hand area (5) and a convex cross-sectional thickening (6) which merges into a concave cross-sectional taper (7, 8) at each end. These two tapers each merge into an octagonal sensing area (9 and 10), of which the sensing area (9) is designed to be significantly longer than the sensing area (10) located at the rear end.

Bei der in Fig. 3 dargestellten Ausführungsform ist der Griff ganzheitlich, also aus einem Stück mit dem Stiel (3) des Sportgerätes hergestellt. Bei der in Fig. 4 dargestellten Ausführungsform besteht der Griff aus zwei Kunststoffhalbschalen (11 und 12), die spiegelbildlich zu einer in Richtung der Längsachse verlaufenden Symmetrieebene ausgebildet sind. Diese Symmetrieebene fällt naturgemäß mit der Nut (13) zusammen, in der die beiden Halbschalen (11 und 12) aneinanderstoßen.In the embodiment shown in Fig. 3, the handle is holistic, that is made from one piece with the handle (3) of the sports device. In the embodiment shown in Fig. 4, the handle consists of two plastic half-shells (11 and 12) which are mirror images of a plane of symmetry extending in the direction of the longitudinal axis. This plane of symmetry naturally coincides with the groove (13) in which the two half-shells (11 and 12) abut.

Die Zeichnung läßt erkennen, daß der Griff im gesamten Handbereich oval ausgebildet ist. Dabei soll das Verhältnis des großen Durchmessers zum kleinen Durchmesser an jeder Stelle des Handbereiches zwischen 1,10 und 1,30 liegen.The drawing shows that the handle is oval in the entire hand area. The ratio of the large diameter to the small diameter should be between 1.10 and 1.30 at every point in the hand area.

Die Flächen des Tastbereiches sind ebenfalls in besonderer Weise ausgestaltet. Insbesondere die Fig. 2-4 lassen erkennen, daß die Tastbereiche (9 und 10) breitere Hauptflächen (14 und 15) sowie daran angrenzende schmälere Nebenflächen (16-19) aufweisen. Als optimal hat sich erwiesen, wenn die breiten Abmessungen dieser Flächen wie folgt sind:

Figure imgb0001
Figure imgb0002
 The areas of the scanning area are also designed in a special way. 2-4 show in particular that the scanning areas (9 and 10) have wider main areas (14 and 15) and adjacent narrower secondary areas (16-19). It has proven to be optimal if the wide dimensions of these areas are as follows:
Figure imgb0001
Figure imgb0002

Die Länge der Flächen ist unkritisch; sie richtet sich nach der Nenngröße des Griffes und kann beliebig variieren.The length of the surfaces is not critical; it depends on the nominal size of the handle and can vary as desired.

Claims (18)

1. Handle for tennis or squash rackets, or the like, which in the area of the hand has a rounded, edge- free cross section and a convex, thickened portion (6) of the cross section, which on either end changes into a concave, depressed portion (7, 8) of the cross section, characterized in that each of the two concave, depressed portions (7, 8) of the cross section changes into a touch area (9, 10) of polygonal, in particular octagonal cross section.
2. Handle according to claim 1, characterized in that each of said touch areas (9, 10) has two opposed main surfaces (14, 15), adjacent to each longitudinal side of which there are narrow secondary surfaces (16 to 19).
3. Handle according to claim 1 or 2, characterized in that the handle (4) in one piece changes into the shaft (3) of the athletic equipment.
4. Handle according to any of claims 1 to 3 characterized in that at least one surface layer of the handle consists of a foamed, thermoplastic or cured material, such as caoutchouc, synthetic material or, in particular, silicone rubber, possibly reinforced by inserts.
5. Handle according to any of claims 1 to 4, characterized in that the handle (4) is made of two or more layers.
6. Handle according to any of claims 1 to 5, characterized in that the handle (4) has one or more inner layers of high-resistance foamed plastics and one outer layer of silicone rubber.
7. Handle according to any of the preceding claims, characterized in that the surface of the handle (4) is roughened.
8. Handle according to any of the preceding claims, characterized in that a cover cap is mounted onto the end of the handle and that said cover cap forms the touch area provided in that place.
9. Handle according to claim 1 or 2, characterized in that the handle (4) consists of two plastic shells (11, 12) formed in mirror-inverted position in relation to a plane of symmetry running in the direction of their longitudinal axis.
10. Handle according to any of the preceding claims, characterized in that the handle has at least in the area of the convex, thickened portion (6) a coating of viscoelastic silicone rubber having a roughened surface.
11. Handle according to claim 10, whose coating consists of elastomer material, preferably silicone rubber, with particle-shaped inclusions, characterized in that the particle size of the inclusions is 1-2.5 mm and the content of included particles is 10-40 percent in weight.
12. Handle according to claim 11, characterized in that the included particles are of oblong shape and that the ratio of width to length of the particles is 1:2 to 3.
13. Handle according to any of the preceding claims, characterized in that the coating is a piece of hose or a wound ribbon.
14. Handle according to any of claims 1 to 12, characterized in that the coating is moulded, sintered or cast onto the handle.
15. Handle according to any of the preceding claims, characterized in that the coating is porous.
16. Handle according to any of the preceding claims, characterized in that the coating consists of several layers, the outermost layer being skin-thin and shrink-fitted, and in that particles of suitable grain size are included between the outer layer and the layer underneath it, in order to create a rough surface.
17. Handle according to any of the preceding claims, characterized in that the entire hand area is of oval shape and that the ratio of large diameter to small diameter is 1.10 to 1.30.
18. Handle according to any of the preceding claims, characterized in that the width dimensions of the surfaces of the touch areas are as follows.
Figure imgb0007
Figure imgb0008
EP87117932A 1987-05-19 1987-12-04 Handle for tennis rackets or the like Expired - Lifetime EP0291576B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87117932T ATE59973T1 (en) 1987-05-19 1987-12-04 HANDLE FOR TENNIS RACKET OR SOMETHING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8707162U 1987-05-19
DE8707162U DE8707162U1 (en) 1987-05-19 1987-05-19

Publications (3)

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EP0291576A2 EP0291576A2 (en) 1988-11-23
EP0291576A3 EP0291576A3 (en) 1989-02-08
EP0291576B1 true EP0291576B1 (en) 1991-01-16

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EP87117932A Expired - Lifetime EP0291576B1 (en) 1987-05-19 1987-12-04 Handle for tennis rackets or the like

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AT (1) ATE59973T1 (en)
DE (3) DE8707162U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078014A1 (en) 2006-11-23 2008-07-03 Babolat Vs Racket handle insert and corresponding handle and racket

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8707162U1 (en) * 1987-05-19 1987-10-01 Kleylein, Horst, 8500 Nuernberg, De
US5058902A (en) * 1990-07-23 1991-10-22 Mccutchen Wilmot H Ellipsoidal flared racquet handle with distal butt weight
GB2357038A (en) * 1999-12-10 2001-06-13 High Cedar Entpr Co Ltd Shock-absorbing and skidproof protective jacket of game racket handle
FR2813199A1 (en) * 2000-08-25 2002-03-01 High Cedar Entpr Co Ltd Skid-proof protective strap for handle of tennis racket, includes granular objects adhered to outer surface of strap for providing roughness
FR2813200A1 (en) * 2000-08-28 2002-03-01 High Cedar Entpr Co Ltd Skid-proof protective strap, for covering surface of game racket handle e.g. for badminton racket, golf club grip, etc., comprises outer surface having recessed portion filled with granules
US6823562B1 (en) * 2002-05-03 2004-11-30 Robert Tyson Smith Grip assembly attachable to variously shaped articles
FR2896996B1 (en) * 2006-02-06 2008-03-14 Babolat Vs Sa ERGONOMIC RACKET HANDLE, RACKET, RANGE OF SLEEVE AND CORRESPONDING RACKET RANGE

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Publication number Priority date Publication date Assignee Title
DE7705968U1 (en) * 1900-01-01 Placzko, Helmut, 6331 Dutenhofen
BE707926A (en) * 1967-12-13 1968-04-16
US4552713A (en) * 1983-02-04 1985-11-12 Jamak, Inc. Method of forming an improved handgrip having non-slip features
DE3414293A1 (en) * 1984-04-14 1985-10-24 Horst 8502 Zirndorf Kleylein HANDLE FOR SPORTS EQUIPMENT
WO1987001602A1 (en) * 1985-09-11 1987-03-26 Gertsch Produkt Innovation Ag Handle for sports striking apparatus
DE8608907U1 (en) * 1986-05-14 1986-07-17 Berger, Bernhard, 8458 Sulzbach Rosenberg Tennis racket
DE8707162U1 (en) * 1987-05-19 1987-10-01 Kleylein, Horst, 8500 Nuernberg, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008078014A1 (en) 2006-11-23 2008-07-03 Babolat Vs Racket handle insert and corresponding handle and racket

Also Published As

Publication number Publication date
DE8716028U1 (en) 1988-02-18
EP0291576A3 (en) 1989-02-08
ATE59973T1 (en) 1991-02-15
DE3767480D1 (en) 1991-02-21
EP0291576A2 (en) 1988-11-23
DE8707162U1 (en) 1987-10-01

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