DE202007000658U1 - Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding - Google Patents

Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding Download PDF

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Publication number
DE202007000658U1
DE202007000658U1 DE202007000658U DE202007000658U DE202007000658U1 DE 202007000658 U1 DE202007000658 U1 DE 202007000658U1 DE 202007000658 U DE202007000658 U DE 202007000658U DE 202007000658 U DE202007000658 U DE 202007000658U DE 202007000658 U1 DE202007000658 U1 DE 202007000658U1
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Germany
Prior art keywords
table tennis
cladding
tennis ball
ball
bat
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Expired - Lifetime
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DE202007000658U
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German (de)
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DORNSEIF PETER
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DORNSEIF PETER
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Priority to DE202007000658U priority Critical patent/DE202007000658U1/en
Publication of DE202007000658U1 publication Critical patent/DE202007000658U1/en
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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N19/00—Investigating materials by mechanical methods
    • G01N19/02—Measuring coefficient of friction between materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B47/00—Devices for handling or treating balls, e.g. for holding or carrying balls
    • A63B47/008—Devices for measuring or verifying ball characteristics
    • G01N33/008—
    • 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
    • A63B2102/16—Table tennis

Abstract

The instrument to measure the adhesion between a table tennis ball and the bat cladding has a table tennis ball (2) held under tension in a housing (1) by springs (6) for rotation. A friction clutch (7) at the left side of the holder maintains a constant torque to rotate the ball. When the grip (9) is pressed to a mark during testing, a constant pressure is maintained by a spring (11) between the ball and the bat cladding.

Description

Handliches Gerät zur Messung der Haftung zwischen dem Belag eines Tischtennisschläger einerseits und dem Tischtennisball andererseitshandy Device for Measuring the adhesion between the covering of a table tennis racket on the one hand and the table tennis ball on the other hand

In der Industrie sind messtechnische Anlagen zur Messung des Parameters "Haftung zwischen Schläger und Belag" vorhanden, um bei der Enwicklung von Schlägerbelägen die Eigenschaften eines Belages zu testen. Wird ein Schläger erst einmal von einem Sportler benützt, so ändert sich oben angesprochener Parameter "Haftung" durch Materialalterung, im Allgemeinen nimmt die Haftung ab, der Belag wird gleichsam "rutschiger". Darüber hinaus kann der Sportler selbst durch Anwendung von Hitze oder Chemikalien die Spieleigenschaften eines Belages derart ändern, so dass dieser nicht mehr den Vorschriften des zuständigen Tischtennisverbandes entspricht. Denen muss er aber bei Teilnahme am offiziellen Spielbetrieb entsprechen.In The industry uses metrological equipment to measure the parameter "adhesion between bat and Covering ", in the development of bat pads the Test properties of a rubber. Will a bat first once used by an athlete, so changes above-mentioned parameter "adhesion" due to material aging, in general decreases the adhesion, the covering becomes more or less "slippery". In addition, the athlete even by using heat or chemicals the playing characteristics change a coating in such a way so that this no longer meets the rules of the competent table tennis association equivalent. He must but to participate in the official game operation correspond.

Diese Problematik hat in den letzten Jahren dadurch zugenommen, dass zum Teil vermehrt Noppenbeläge mit extrem glatter Oberfläche benützt werden. Dadurch werden sogenannte "Flatterbälle" induziert, die das Spiel unkalkulierbar und unattraktiv werden lassen. Die Tischtennisverbände haben diese Problematik sicherlich erkannt, wirksam reagiert wurde bisher nicht, dieses ist aber in Bälde zu erwarten.These Problem has increased in recent years in that the Part increases pimples with an extremely smooth surface used become. As a result, so-called "fluttering balls" are induced, which makes the game incalculable and unattractive. The table tennis associations have This problem was certainly recognized, has been reacted effectively so far not, but this is in the near future expected.

Wirksamstes Mittel, um das Spiel wieder attraktiv und kalkulierbar zu machen wäre, eine definierte Mindesthaftung zwischen Ball und Belag in den Zulassungsbestimmungen für Beläge zu postulieren. Das Problem ist, dass den Sportlern bisher nichts in die Hand gegeben ist, die wichtigste Spieleigenschaft eines Belages, nämlich seine Haftfähigkeit vor Ort zu überprüfen.most effective Means to make the game attractive and calculable again would be a defined minimum adhesion between ball and covering in the approval regulations to postulate for coverings. The The problem is that the athletes have so far given nothing in the hand is the most important play feature of a rubber, namely his adhesiveness check on site.

Der im Schutzanspruch angegebenen Erfindung liegt das Problem zugrunde, vor Ort prüfen zu können ob ein Schlägerbelag in Bezug auf seine Haftung noch den Vorgaben des zuständigen Verbandes entspricht.Of the in the protection claim specified invention is based on the problem check on site to be able to whether a racket coating in terms of its liability nor the requirements of the relevant association.

Dieses Problem wird mit den im Schutzanspruch aufgeführten Merkmalen gelöst. Anpressdruck und Rollwiederstand des Tischtennisballes könnten einstellbar oder nach Vorgaben des Verbandes fest eingestellt werden, Jeder Sportler hätte dann die Möglichkeit, dieses Gerät nach den Vorgaben über die beiden Beläge des Schlägers seines Gegners zu ziehen; je nachdem, ob der verwendete Ball sich dreht oder nicht, weiss er, ob der Belag den Bestimmungen entspricht oder nicht. Ein Ausführungsbeispiel der Erfindung wird anhand der 1 erläutert.This problem is solved with the features listed in the protection claim. Contact pressure and rolling resistance of the table tennis ball could be adjusted or fixed according to specifications of the Association, each athlete would then have the opportunity to pull this device to the specifications on the two surfaces of the racket of his opponent; depending on whether the ball used rotates or not, he knows whether the coating meets the requirements or not. An embodiment of the invention will be described with reference to 1 explained.

In der Figur wird das Gerät mit Gehäuse 1, dem mit der Spannvorrichtung eingespannten Tischtennisball 2, der Spannvorrichtung 3 mit Lagern 4 sowie der Führung 5 mit Feder 6 dargestellt. Führung 5 und Feder 6 sorgen dafür, dass der eingespannte Ball sicher gehalten wird und sich während der Prüfung nicht relativ zur drehbaren Haltevorrichtung verdreht. Am linken Ende der Haltevorrichtung ist eine Rutsehkupplung 7 angebracht, um das Drehmoment, das auf den Ball ausgeübt werden muss, um diesen zu drehen, konstant zu halten. Der Haltegriff 9 ist durch die verdrehgesicherte Führung 10 mit Feder 11 mit dem Gehäuse 1 verbunden. Durch Eindrücken des Griffes bis zur Markierung 12 während der Prüfung wird erreicht, dass der Anpressdruck zwischen Ball 2 und Belag annähernd konstant bleibt. Die Stärke des Anpressdruckes wird durch die Härte der verwendeten Feder 11 festgelegt.In the figure, the device with housing 1 , the table tennis ball clamped with the tensioning device 2 , the tensioning device 3 with warehouses 4 as well as the leadership 5 with feather 6 shown. guide 5 and spring 6 ensure that the clamped ball is held securely and does not twist relative to the rotatable support during the test. At the left end of the fixture is a Rutsehkupplung 7 attached to keep the torque that must be exerted on the ball to rotate it, constant. The handle 9 is through the twist-resistant guide 10 with feather 11 with the housing 1 connected. By pushing the handle to the mark 12 During the test it is achieved that the contact pressure between ball 2 and covering remains approximately constant. The strength of the contact pressure is determined by the hardness of the spring used 11 established.

Claims (3)

Handliches Gerät zur Messung der Haftfähigkeit zwischen Schlägerbelag einerseits und dem Tischtennisball andererseits, dadurch gekennzeichnet, dass ein Tischtennisball in einem geigneten Gehäuse drehbar befestigt wirdHandy device for measuring the adhesion between bat surface on the one hand and the table tennis ball on the other hand, characterized in that a table tennis ball is rotatably mounted in a geigneten housing Gerät nach Anspruch 1 dadurch gekennzeichnet, dass am drehbaren Teil des Gerätes eine Vorrichtung angebracht ist, durch die das Drehmoment, das nötig ist, um den eingespannten Tischtennisball zu drehen, konstant an einem vorgegebenen Wert gehalten werden kann.device according to claim 1, characterized in that on the rotatable part of equipment a device is attached through which the torque that is needed to turn the clamped table tennis ball, constantly on one predetermined value can be maintained. Gerät nach Anspruch 1 dadurch gekennzeichnet, dass durch eine geeignete Vorrichtung an dem Gerät der Anpressdruck des eingespannten Tischtennisballes an den zu prüfenden Schlägerbelag während der Prüfung annähernd an einem vorgegebenen Wert konstant gehalten werden kann.device according to claim 1, characterized in that by a suitable Device on the device the pressure of the clamped table tennis ball on the racket to be tested during the exam nearly can be kept constant at a predetermined value.
DE202007000658U 2007-01-16 2007-01-16 Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding Expired - Lifetime DE202007000658U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202007000658U DE202007000658U1 (en) 2007-01-16 2007-01-16 Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007000658U DE202007000658U1 (en) 2007-01-16 2007-01-16 Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding

Publications (1)

Publication Number Publication Date
DE202007000658U1 true DE202007000658U1 (en) 2007-03-08

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DE202007000658U Expired - Lifetime DE202007000658U1 (en) 2007-01-16 2007-01-16 Instrument to test adhesion between a table tennis ball and the bat cladding, to meet competition rules, has a table tennis ball held by springs in a holder with a friction clutch to set the ball rotation torque against the cladding

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DE (1) DE202007000658U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108519325A (en) * 2018-05-07 2018-09-11 河北工业大学 It is a kind of research hand contacted with object between friction coefficient and contact area relationship method and apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108519325A (en) * 2018-05-07 2018-09-11 河北工业大学 It is a kind of research hand contacted with object between friction coefficient and contact area relationship method and apparatus
CN108519325B (en) * 2018-05-07 2023-08-04 河北工业大学 Method and device for researching relationship between friction coefficient and contact area between hand and object

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