EP0416347A1 - Tennisschläger - Google Patents

Tennisschläger Download PDF

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Publication number
EP0416347A1
EP0416347A1 EP90115757A EP90115757A EP0416347A1 EP 0416347 A1 EP0416347 A1 EP 0416347A1 EP 90115757 A EP90115757 A EP 90115757A EP 90115757 A EP90115757 A EP 90115757A EP 0416347 A1 EP0416347 A1 EP 0416347A1
Authority
EP
European Patent Office
Prior art keywords
handle
tennis racket
sensor
holding force
racket according
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.)
Withdrawn
Application number
EP90115757A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Suttner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0416347A1 publication Critical patent/EP0416347A1/de
Withdrawn legal-status Critical Current

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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
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/38—Training appliances or apparatus for special sports for tennis
    • 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
    • A63B60/46—Measurement devices associated with golf clubs, bats, rackets or the like for measuring physical parameters relating to sporting activity, e.g. baseball bats with impact indicators or bracelets for measuring the golf swing
    • A63B2060/464—Means for indicating or measuring the pressure on the grip
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00—Measuring of physical parameters relating to sporting activity
    • A63B2220/50—Force related parameters
    • A63B2220/56—Pressure

Definitions

  • the invention relates to a tennis racket with a handle, which is preferably wrapped with a grip tape.
  • a tennis racket usually consisting of frame, covering and handle, is regularly held by the tennis player with a certain holding force of the tennis hand on the handle.
  • a minimum holding force on the handle is required for optimal striking posture and striking.
  • Almost all tennis players have difficulty keeping the holding force on the handle sufficiently high, especially in the moment immediately before the impact of a tennis ball on the covering, the holding force often decreases briefly due to a shock reaction. But at this very moment it has to be high enough.
  • a tennis racket is known per se (US Pat. No. 4,027,879), in which metal parts are provided which shift as a function of the holding force and strike mechanically when the holding force is sufficiently high.
  • this form of holding force display is not reliable and consequently does not lead to real training success.
  • such a holding force indicator is often ignored or the holding force changes so slowly that one hears nothing at all, because the impact impulse of the metal parts, which depends only on the rate of change of the holding force, is too low.
  • the invention has for its object to further develop a tennis racket with the aim of a particularly simple and successful training course.
  • the invention solves the problem outlined above in that a sensor is installed in the handle, by which the holding force can be measured, with which the hand of a tennis player leading the tennis racket spans the handle, that the sensor is connected to an electronic evaluation circuit integrated in the handle and that an evaluation signal, in particular an acoustic display signal, can be emitted by the evaluation circuit when the holding force reaches a certain preset limit value (or various limit values).
  • a preferably acoustic display of the holding force is thus integrated into the tennis racket.
  • An acoustic display signal is particularly useful because it is perceived under all playing conditions.
  • the display signal may also be advisable to sound the acoustic display signal when the holding force falls below the preset limit value. Then the display signal does not normally sound, but only in the event of an error.
  • the display signal thus has the character of a real alarm signal which is particularly advantageous for the attention of the tennis player.
  • the tennis racket shown in FIG. 1 initially has a frame 1 designed in a customary form, for which a custom covering 2 is indicated here.
  • the tennis racket also has a handle 4, which is made in one piece with the frame 1, here wrapped with a grip tape 3. It can be seen that the handle 4 has a core 5, shown here partly in section, onto which a handle section made of plastic with the wound thereon Grip 3 is attached.
  • a sensor 6 is installed in the handle 4, by means of which the holding force can be measured, with which the hand of a tennis player leading the tennis racket spans the handle 4, that the sensor 6 is connected to an electronic evaluation circuit 7 integrated in the handle 4 connected and that an evaluation signal, in particular an acoustic display signal, can be emitted by the evaluation circuit 7 when the holding force reaches a certain preset limit value (or various limit values).
  • a certain limit value of the holding force can be preset, that is to say can be set variably, and that an acoustic signal sounds when the holding force falls below the preset limit value.
  • the display signal could also be sounded if the holding force exceeds the preset limit value, which would have the advantages explained above.
  • FIG. 1 shows an electronic evaluation circuit 7 installed only as a plate-shaped or disc-shaped part in the front of the handle 4, recessed from the outside in the front is also a compartment for a button cell 8 or another battery as a power supply for the Evaluation circuit 7 and the sensor 6.
  • a buffer battery and solar cells the latter applied in the central region of the frame 1.
  • An acoustic signal generator 9 is shown on the front side, here in the form of a modern piezo loudspeaker. It is shown in dashed lines that an acoustic display signal is sounding, since, as the figure shows, the holding force 4 has a holding force of zero, that is to say the holding force falls below the preset limit value.
  • the handle 4 is constructed from two half-shells 10, 11, between which at least one spring element 12, which pushes apart the half-shells 10, 11, is or are preferably arranged a plurality of spring elements.
  • a plurality of distributed spring elements 12 would have the advantage that the counterforce which counteracts the holding force and is exerted by the spring elements 12 would be distributed even better over the length of the handle 4.
  • the illustrated embodiment shows that in this case the core 5 of the handle 4 consists of two parts, at least in its lower area forming the handle 4.
  • the spring element 12 forms part of the sensor 6, namely the part of the sensor 6 that can be set to the desired limit value.
  • the spring force of the spring element 12 can be adjusted, for example by a corresponding change in a pretensioning force.
  • the sensor 6 here has a touch contact 13 as the actual signal trigger.
  • the two half-shells 10, 11 of the handle 4 are pressed together by the sufficient holding force, the two contact surfaces of the contact 13 come into contact with one another, so that a switching signal is triggered.
  • this serves to switch off the acoustic display signal emitted by the signal generator 9; it could of course also be used for the exactly opposite switching function, regardless of which signal generator is used.
  • Fig. 2 shows an alternative, which is characterized by; that the handle 4 is made in one piece, but is provided with an elastic outer jacket 14.
  • the sensor 6 is designed as a large-area, pressure-sensitive element, for example as a strain gauge film, and is applied to the handle 4 over a large area.
  • a hydraulic or pneumatic holding force detection could also be used.
  • Fig. 3 makes another alternative clear, which is characterized in that the handle 4 is made in one piece, that a spring element 15 is arranged in each of the four corners of the handle 4 and that all spring elements 15 act on a central sensor 6 or each spring element 15 acts on its own sensor 6.
  • the central sensor 6 recognizable in FIG. 3 can be a pressure-sensitive element, for example a piezocrystal or an arrangement of piezocrystals.
  • the spring element 15, consisting of the actual movable body and a compression spring, is installed in the handle 4 so that it is pushed outward to a stop. If the holding force is sufficient, the spring element is pressed inward against the spring force and the sensor 6 is actuated. It is therefore sufficient if the holding force on one of the spring elements 15 in each of the four corners exceeds the preset limit value.
  • the sensor 6 provided according to the invention could also be used as a retrofittable element for existing tennis rackets, but technically a specially equipped tennis racket will be the better alternative in most cases.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
EP90115757A 1989-09-05 1990-08-17 Tennisschläger Withdrawn EP0416347A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3929459 1989-09-05
DE3929459A DE3929459C1 (pl) 1989-09-05 1989-09-05

Publications (1)

Publication Number Publication Date
EP0416347A1 true EP0416347A1 (de) 1991-03-13

Family

ID=6388667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115757A Withdrawn EP0416347A1 (de) 1989-09-05 1990-08-17 Tennisschläger

Country Status (3)

Country Link
US (1) US5226650A (pl)
EP (1) EP0416347A1 (pl)
DE (1) DE3929459C1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696219A1 (en) * 1993-04-29 1996-02-14 Tone Trainer, Inc. Method and apparatus to train sportsmen
CN108479031A (zh) * 2018-06-11 2018-09-04 四川长虹网络科技有限责任公司 智能球拍辅助设备、智能球拍及智能球拍系统

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6033370A (en) * 1992-07-01 2000-03-07 Preventive Medical Technologies, Inc. Capacitative sensor
US5322289A (en) * 1993-01-29 1994-06-21 Jack Abrams Pressure-sensitive grip measuring device
ITRM20010540A1 (it) * 2001-09-07 2003-03-07 Mario Ambrosone Dinamometro e relativo metodo di misura.
AU2003257447A1 (en) * 2002-07-10 2004-02-02 Ab Beheer B.V. Hand pressure sensor warning device
JP4182338B2 (ja) * 2003-03-06 2008-11-19 信越化学工業株式会社 熱硬化性パーフルオロポリエーテル系ゴム組成物及びゴム製品
US7514506B2 (en) * 2004-03-31 2009-04-07 Greene, Tweed Of Delaware, Inc. Fast curing fluoroelastomeric compositions, adhesive fluoroelastomeric compositions and methods for bonding fluoroelastomeric compositions
US7699757B2 (en) 2006-12-05 2010-04-20 Cardiogrip Iph, Inc. Apparatus, system and method for carrying out protocol-based isometric exercise regimen
DE202007013632U1 (de) * 2007-09-28 2007-12-06 Exner, Frank, Dr. Vorrichtung zur Optimierung der Schlagtechnik für Ballspiele
US8814713B2 (en) 2007-12-31 2014-08-26 Cypress Semiconductor Corporation Finger position sensing for handheld sports equipment
US20100267502A1 (en) * 2009-04-17 2010-10-21 Alexander Kaufman Sports Grip Sensor
US8449410B1 (en) * 2009-04-17 2013-05-28 Alexander Kaufman Sports grip sensor
GB2485993A (en) * 2010-11-30 2012-06-06 St Microelectronics Res & Dev Sports equipment comprising proximity detector using single photon avalanche diode (SPAD) for measuring the speed of an object struck by the sports equipment
GB2485994A (en) 2010-11-30 2012-06-06 St Microelectronics Res & Dev Navigation device using a Single Photon Avalanche Diode (SPAD) detector
GB2486165A (en) 2010-11-30 2012-06-13 St Microelectronics Res & Dev Oven using a Single Photon Avalanche Diode (SPAD) array
US8944940B2 (en) 2011-08-29 2015-02-03 Icuemotion, Llc Racket sport inertial sensor motion tracking analysis
GB2494663A (en) 2011-09-14 2013-03-20 St Microelectronics Res & Dev A system and corresponding method for monitoring vibration isolators
US9327177B2 (en) * 2011-10-14 2016-05-03 Dunlop Sports Co. Ltd. Tennis swing analysis method
US10668353B2 (en) 2014-08-11 2020-06-02 Icuemotion Llc Codification and cueing system for sport and vocational activities
US9956469B2 (en) 2014-11-25 2018-05-01 Hand To Hand Racket Sports, Inc. Tennis racket sensor system and coaching device
JP6994948B2 (ja) 2015-06-30 2022-02-04 シュンユエン・カイファ（ベイジン）・テクノロジー・カンパニー・リミテッド スポーツ用具の動きセンサ
US10854104B2 (en) 2015-08-28 2020-12-01 Icuemotion Llc System for movement skill analysis and skill augmentation and cueing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323367A (en) * 1964-12-01 1967-06-06 Vibrac Corp Grip indicator
FR2626483A1 (fr) * 1988-02-01 1989-08-04 Wache Albert Dispositif de controle de prehension, notamment pour canne de golf
US4861034A (en) * 1988-07-28 1989-08-29 Lee Sung Y Golf-grip training device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111322A (en) * 1961-06-29 1963-11-19 Harry G Johansing Grip training device
US3918721A (en) * 1973-12-19 1975-11-11 Jr John B Trask Golf club swing training device and method
US4027879A (en) * 1975-04-21 1977-06-07 Bruce David Wright Tennis training device
US3995492A (en) * 1975-08-11 1976-12-07 Clynes Manfred E Sound-producing isometric exerciser
AU2536777A (en) * 1976-06-11 1978-11-23 Univ Newcastle Instructional sporting implement handle
US4729560A (en) * 1983-01-17 1988-03-08 Cho Myung H Pivotal exercise handles having spring resistance
JPS59133252U (ja) * 1983-01-17 1984-09-06 ▲ちよ▼　明鎬 握力機構造を設けたロ−プ飛び具の把持部
SU1405857A1 (ru) * 1986-10-15 1988-06-30 Ю. Н. Родионов Ракетка дл тренировки
US4834376A (en) * 1987-10-13 1989-05-30 Nasta Industries, Inc. Baseball bat with impact indicator
US4971320A (en) * 1989-04-03 1990-11-20 Nesbit Charles E Tennis racket equipped with a portable radio
US4930785A (en) * 1989-09-05 1990-06-05 Kcap Manufacturing, Inc. Golf grip training apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323367A (en) * 1964-12-01 1967-06-06 Vibrac Corp Grip indicator
FR2626483A1 (fr) * 1988-02-01 1989-08-04 Wache Albert Dispositif de controle de prehension, notamment pour canne de golf
US4861034A (en) * 1988-07-28 1989-08-29 Lee Sung Y Golf-grip training device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0696219A1 (en) * 1993-04-29 1996-02-14 Tone Trainer, Inc. Method and apparatus to train sportsmen
EP0696219A4 (en) * 1993-04-29 1996-09-18 Tone Trainer Inc METHOD AND APPARATUS FOR TRAINING SPORTSMEN
CN108479031A (zh) * 2018-06-11 2018-09-04 四川长虹网络科技有限责任公司 智能球拍辅助设备、智能球拍及智能球拍系统

Also Published As

Publication number Publication date
US5226650A (en) 1993-07-13
DE3929459C1 (pl) 1991-01-24

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