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WO2002011824A2 - Dispositif et procede pour mesurer des raquettes - Google Patents

Dispositif et procede pour mesurer des raquettes Download PDF

Info

Publication number
WO2002011824A2
WO2002011824A2 PCT/CH2001/000476 CH0100476W WO0211824A2 WO 2002011824 A2 WO2002011824 A2 WO 2002011824A2 CH 0100476 W CH0100476 W CH 0100476W WO 0211824 A2 WO0211824 A2 WO 0211824A2
Authority
WO
WIPO (PCT)
Prior art keywords
string
covering
racket
stringing
force
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.)
Ceased
Application number
PCT/CH2001/000476
Other languages
German (de)
English (en)
Other versions
WO2002011824A3 (fr
Inventor
Ulrich H. KÜHNEL
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.)
XCEPTION SPORTS TECHNOLOGIES LICENSE AG
Original Assignee
XCEPTION SPORTS TECHNOLOGIES LICENSE 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 XCEPTION SPORTS TECHNOLOGIES LICENSE AG filed Critical XCEPTION SPORTS TECHNOLOGIES LICENSE AG
Priority to AU2001281625A priority Critical patent/AU2001281625A1/en
Publication of WO2002011824A2 publication Critical patent/WO2002011824A2/fr
Publication of WO2002011824A3 publication Critical patent/WO2002011824A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A63B51/14—Arrangements for stringing, e.g. for controlling the tension of the strings during stringing

Definitions

  • the invention is in the field of racquets, respectively.
  • Rackets for ball games such as those used for tennis, squash or badminton.
  • This string usually consists of an endless string, which is braided through holes provided in the frame, so that it forms a network.
  • Coverings are typically manufactured manually today.
  • the frame of the racket is usually clamped in a stringing device in order to tension the string by hand or with the help of a machine.
  • Corresponding coverings have the disadvantage that the strings are processed in an uncontrolled (undefined) manner. Certain strings therefore have unfavorable tensions compared to their neighbors, making the racket difficult to control.
  • the sweet spot is therefore correspondingly small and there are health effects on the health of the player (blow arm).
  • the deflection (deflection) of the string bed is difficult to control. This is particularly disadvantageous in competitions.
  • the invention disclosed here is based, among other things, on the fact that characteristic map data and characteristic maps are determined and used for dimensioning clothing.
  • important influencing factors of the racket such as the area of the racket (string bed), length, width, etc., as well as the strings (number, elasticity behavior) are taken into account.
  • the values of the map data are preferably generated arithmetically, by means of tests or by measurements. Calculations are preferably carried out using a computer which has suitable programming.
  • the maps are created individually for racquets of different characteristics and recorded in a suitable form. This makes it possible to tension strings in such a way that, depending on their location, they have an optimal tension / stretch behavior in conjunction with their neighbors. Further advantages are that a covering is reproducible and that a corresponding one String bed has a defined surface hardness value that can be adjusted according to a customer's request. If necessary, the optimal string tension can be determined using the surface hardness value.
  • map data (setpoints) contained in a specific map are transferred to the racket by means of a device according to the invention.
  • the optimal tension values for the covering, resp. the string sections determined.
  • the required target value of the string tension of a section of string can be calculated individually from a desired surface hardness value. Optimized sizes of the sweet spot can be achieved with the invention disclosed here.
  • the map data compiled into maps are stored in a suitable form and on a suitable storage medium, for example as a file in a computer or in a central database (can be called up regardless of location). These files include hold, for example, information about the balance of forces in the individual string sections, geometry data, etc.
  • Rackets are preferably marked in such a way that they can be clearly identified. It is possible to save all relevant data on the racket (barcode, chip) or, for example, on a chip card.
  • a database can be used which contains relevant data and preferably makes it accessible regardless of location (e.g. via an internet connection). In this case, a marking in the area of the racket is sufficient, which assigns a racket to the corresponding information in the database.
  • specific customer data (gaming assets, etc.) are also taken into account.
  • the rackets covered according to the method disclosed here are additionally used, e.g. for promotional purposes, marked.
  • a suitably combinable color application device e.g. a logo can be applied to the covering to mark the racket.
  • a corresponding device can be combined with the device described here.
  • suitable packaging e.g. in the form of a transparent plastic film with a print, usable.
  • the reels are advantageously operatively connected to a control (the stringing device, customer advice center) in such a way that the string to be measured can be inserted between the two reels and can be measured automatically.
  • Figure 1 shows an inventive device in a perspective
  • FIG. 2 shows a detail of the device from FIG. 1 in an enlarged representation.
  • FIG. 1 schematically shows a preferred embodiment of a covering device 1 according to the invention for covering rackets in a perspective view.
  • a covering frame 2, a pulling device 3 and a display means 4 can be seen.
  • the covering frame 1 here has a base plate 10, a substructure 11 and a bearing axis 12, as well as a first 13 and a second fastening means 14 and four rods 15 which can be displaced transversely to their longitudinal direction , 16, 17, 18 (cf. FIG. 2), which are attached below the base plate 10, two of which here each have an angle of approximately 90 ° to one another.
  • the covering tion frame 1 is rotatable about the bearing axis 12 on a work table (not shown), for example by means of a ball bearing, so that the racket 15 can be brought into a most favorable position during a covering process.
  • the fastening means 13, 14 serve for the temporary fastening of a racket 20 on the base plate 10 of the covering frame 1 above an opening 19.
  • the opening 1 is arranged in such a way that a covering 21 to be attached in the racket 20 (shown here in the making) is from both sides is editable.
  • the covering 21 is generally produced from a string 22 in which it is braided through holes (not shown in more detail) that are usually made in the frame of the racket and run approximately radially.
  • the string sections running in the longitudinal direction of the racket 20 are first created. After being drawn through the corresponding openings, each string section is fed to a string clamping device 25, which is attached here to the upper end of a slide 30 of the pulling device 3.
  • the string clamping device is arranged here in such a way that the string 22 to be tensioned can essentially be pulled in the direction of the corresponding holes in the frame of the racket 15 (at the same height).
  • a string section to be tensioned is tensioned by means of the string clamping device 25 until a predetermined target value is reached.
  • the predetermined target value is determined according to the length of the string section to be processed, in such a way that optimal behavior is achieved in conjunction with the adjacent strings.
  • the data required for this are usually determined using a map.
  • the carriage 30 is mounted in such a way that it follows a linear guide 31, which is firmly connected to the work table (not shown in more detail), in the direction of an arrow 32 can be moved.
  • the carriage 30 is operatively connected via a spindle 33 to a motor 34, which is also firmly connected to the work table (not shown in more detail), such that the carriage 30 is moved linearly relative to the racket 20 by means of the motor 34 in the direction of arrow 32 can.
  • the string clamping device 25 here consists of two clamping jaws 26, 27 which are arranged such that they act self-locking when a string is clamped.
  • a string section to be tensioned is inserted between the clamping jaws 26, 27 of the string clamping device 25.
  • the clamping process is triggered by actuating a switch 28, which is arranged here behind the clamping device 25.
  • the switch 28 is arranged such that it can be actuated by pulling down the string section 29 projecting behind the clamping device 25. If necessary, other means can be provided to trigger the tensioning process.
  • the switch 28 may e.g. can also be used to trigger an emergency stop if necessary.
  • the motor 35 and with it the carriage 30 are set in motion.
  • the entire process is preferably monitored and controlled via a programmed controller, which is not shown here.
  • the control uses the motor 34 to move the slide 30 and the string clamping device 25 operatively connected to it at a certain speed in the direction of the arrow 32 from the racket 15.
  • the clamping jaws 26, 27 are made to close by a trigger mechanism (not shown), which contains, for example, an electromagnet. As a result, the string section lying between the clamping jaws 26, 27 is clamped.
  • the clamping jaws 26, 27 are designed in such a way that the clamping effect increases in accordance with the force acting on the string 22 (self-locking).
  • the tensile force acting on the string 22, represented schematically by an arrow 23, is measured via a load cell 24 which is operatively connected to the clamping device, and one with the control coupled data acquisition and evaluation unit (not shown).
  • This data acquisition and evaluation unit evaluates the measured values of the load cell 24 and compares it here with a preset target value. If this setpoint is reached, the string is loaded up to a certain value (stretching process) before it is set to the setpoint. This guarantees that, among other things, the quality of a covering will last in the long term.
  • the speed curve driven is set according to the requirements.
  • a first clamp 40 is attached to one of the displaceable rods 15, 16, 17, 18 and the string 22.
  • the string 22 can also be fixed locally to the frame of the racket 15 using appropriate means, for example in the area of the holes in the frame of the racket (not shown in more detail).
  • One way of calculating the initial string tensions is to determine them in such a way that a short string with the same force experiences the same deflection as a long string with the same force.
  • the values required for this are usually determined depending on the geometry of a racket and in a suitable form, e.g. stored in a database in conjunction with other data.
  • a racket can be identified accordingly by means of a reference (e.g. bar code marking, chip card, chip) in such a way that the relevant data can be assigned.
  • the user of the device 1 is instructed on the display means 4 which string is to be tensioned.
  • a frame of a racket 36 is shown schematically in the embodiment shown here.
  • information 37 for example, flashes that provide information about which section of the string is to be created in the next work step (stringing scheme).
  • Other relevant data such as recommended string type, total string length and per section, string numbers (lengthways, crossways), weight of the racket, size, balance point, etc. can also be if represented.
  • the data are coordinated with the racket to be covered.
  • information 38 about the clamping process is shown on the display means.
  • the desired and the current value of the string tension is displayed.
  • the display means 4 is preferably a touch screen panel on which operating elements 39 can be displayed, by means of which the work flow and the control of the covering device can be influenced.
  • the display means 4 is connected here to the control (not shown) covering device 1 and to a computer (not shown) which can be used to record customer data and provide individual support. There is also an active connection between the computer for recording customer data and the control of the covering device 1. Data or measured values exchanged via a racket 15.
  • a data acquisition device e.g. a barcode reader pen (not shown in detail) or a laser scanner (not shown in detail) are also coupled to the computer for recording customer data and / or controlling the covering device.
  • the data acquisition device is used here, for example, to identify a marked racket or to determine other relevant data, as well as to operate the covering device 1.
  • Information about rackets can be present in a booklet in a printed form, for example, and assigned to the covering device 1 with a bar code , If necessary, it is possible to operate the covering device 1 without a computer for recording customer data.
  • FIG. 2 shows a section of the covering device 1 in FIG. 1.
  • the covering frame 2 with the racket 15 fastened thereon can be seen in a perspective view.
  • the detail D shows the first fastening means 13, which is used for the temporary clamping of the racket 15 on the base plate 10, in an enlarged representation.
  • an element 45 is fastened, which NEN cross-section, which cooperates with a base 46 of the first fastening means 13 such that the base 46 is displaceable in the direction of an arrow 47.
  • the fastening means 13, 14 are designed such that they do not hinder a covering of the racket.
  • they have a threaded pin 48 which is fastened on the base 46 and can be operatively connected to a counterpart 49 and a knurled screw 50 such that a frame of the racket 15 can be temporarily tightened.
  • the base plate 10 has holes 55 which are suitable for receiving a deflecting roller 56.
  • the deflection roller 56 serves to tension the string 22 with the pulling device 3 (cf. FIG. 1) in an optimal direction (e.g. shortest path) in such a way that friction which hinders it is avoided.
  • rods 15, 16, 17, 18 which can be displaced transversely to their longitudinal direction can be seen.
  • These rods 15, 16, 17, 18 are fastened in linear bearings (not shown in detail) below the base plate 10 and can be moved transversely to their longitudinal direction and parallel to the surface of the base plate 10. They serve for the temporary fastening of a first and a second clamp pliers 40, 41 while stringing the racket 15, so that the tensioned string sections can no longer slip.
  • the clamping pliers 40, 41 serve as holding means and are arranged in such a way that they do not hinder the covering process.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

L'invention concerne un dispositif et un procédé pour corder des raquettes, notamment des raquettes de tennis. Une raquette (20) est cordée avec un dispositif de cordage (1). Le dispositif de cordage (1) présente un cadre de cordage (2), avec des éléments de fixation (13,14) servant à fixer temporairement la raquette (20) sur le cadre de cordage (2). Le dispositif de cordage présente un dispositif de traction (3) pour tirer une corde (22). Une boîte dynamométrique (24) permet de mesurer la force (23) exercée sur la corde (22) et de la contrôler individuellement par une commande.
PCT/CH2001/000476 2000-08-03 2001-08-03 Dispositif et procede pour mesurer des raquettes Ceased WO2002011824A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001281625A AU2001281625A1 (en) 2000-08-03 2001-08-03 Device and method for measuring rackets

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH15212000 2000-08-03
CH1521/00 2000-08-03

Publications (2)

Publication Number Publication Date
WO2002011824A2 true WO2002011824A2 (fr) 2002-02-14
WO2002011824A3 WO2002011824A3 (fr) 2002-05-02

Family

ID=4565536

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2001/000476 Ceased WO2002011824A2 (fr) 2000-08-03 2001-08-03 Dispositif et procede pour mesurer des raquettes

Country Status (2)

Country Link
AU (1) AU2001281625A1 (fr)
WO (1) WO2002011824A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2452725A1 (fr) * 2010-11-15 2012-05-16 Wilson Sporting Goods Co. Système de cordage de raquette personnalisée

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4125259A (en) * 1977-06-23 1978-11-14 Tennis Machines, Inc. String clamping device and support structure therefor for racket and like stringing machines
US4348024A (en) * 1979-02-12 1982-09-07 Balaban J A Racket stringing apparatus and method
US4326713A (en) * 1979-02-12 1982-04-27 Balaban J A Racket stringing apparatus and method
DE2915647A1 (de) * 1979-04-18 1980-10-30 Richard Hahn Tennisschlaeger-besaitungsmaschine
FR2475908A2 (fr) * 1980-02-18 1981-08-21 Montana Sport Perfectionnements a la machine a corder les raquettes
DE4032745A1 (de) * 1990-08-29 1992-03-05 Ulrich Kuehnel Verfahren zum besaiten von schlaegern, deren saitenbett parallele laengssaiten und untereinander parallele quersaiten aufweist
US5820500A (en) * 1994-05-03 1998-10-13 Raos; Davor Non-rotating racquet and stringing machine and method
FR2740046A1 (fr) * 1995-10-23 1997-04-25 Gerber Bruno Jean Claude Distributeur automatique de cordage de raquettes de tennis, squash et badminton
US5733212A (en) * 1996-10-08 1998-03-31 Wise U. S. A., Inc. Electronic racket stringing machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2452725A1 (fr) * 2010-11-15 2012-05-16 Wilson Sporting Goods Co. Système de cordage de raquette personnalisée
JP2012105979A (ja) * 2010-11-15 2012-06-07 Wilson Sporting Goods Co カスタマイズされたラケット張弦システム

Also Published As

Publication number Publication date
AU2001281625A1 (en) 2002-02-18
WO2002011824A3 (fr) 2002-05-02

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