EP0275805B1 - Tennisschläger - Google Patents

Tennisschläger Download PDF

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Publication number
EP0275805B1
EP0275805B1 EP87420349A EP87420349A EP0275805B1 EP 0275805 B1 EP0275805 B1 EP 0275805B1 EP 87420349 A EP87420349 A EP 87420349A EP 87420349 A EP87420349 A EP 87420349A EP 0275805 B1 EP0275805 B1 EP 0275805B1
Authority
EP
European Patent Office
Prior art keywords
racquet
absorbing
racket
fixed
plane
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.)
Expired - Lifetime
Application number
EP87420349A
Other languages
English (en)
French (fr)
Other versions
EP0275805A1 (de
Inventor
Pierre Antoine Movilliat
Yves Piegay
Gilles Du Gardin
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.)
Skis Rossignol SA
Original Assignee
Skis Rossignol SA
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 Skis Rossignol SA filed Critical Skis Rossignol SA
Priority to AT87420349T priority Critical patent/ATE66627T1/de
Publication of EP0275805A1 publication Critical patent/EP0275805A1/de
Application granted granted Critical
Publication of EP0275805B1 publication Critical patent/EP0275805B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/54—Details or accessories of golf clubs, bats, rackets or the like with means for damping vibrations

Definitions

  • the present invention relates to a ball game racket, more particularly intended for the game of tennis, this racket being provided with a vibration damping device.
  • any physical system is subjected to one or more types of damping as long as the energy is dispersed there either by friction, or by other dissipative systems, for example viscoelastic, or hysteresis.
  • the natural vibratory modes on which it is most important to act are, of course, the modes of higher energy, that is to say those which generate important deformations of the structure.
  • Priority should therefore be given to influencing the first three bending modes perpendicular to the plane of the racket, the first two bending modes in the plane of the racket, as well as the first mode of coupling the bending vibrations perpendicular to the racket plane and torsion with respect to its longitudinal axis.
  • document FR-A-2 336 299 describes a device intended to damping the dynamic deformations of the oscillations of a wing or of a helicopter blade, comprising at least one overlapping layer and an elastomer damping layer superimposed and placed directly on the wing in the deformation zone dynamic.
  • the invention aims, by simple and inexpensive means, to settle selectively the damping of a tennis racket by applying to it, in determined locations, a damping element whose damping coefficient is found to be optimal in the temperature range and operating frequency of the racket. It therefore relates to a ball game racket comprising at least one vibration damping system, positioned locally, of the stress plate type associated with a visco-elastic material intended to be stressed in shear and attached integrally to the outside of the structure of the racket, where each damping system consists of a bi-material plate of which one of the materials is a visco-elastic material whose damping coefficient ⁇ is at least 0.5 in a temperature range located between 10 and 30 ° C, and for frequencies ranging from 0 to 1000 Hz, bonded by vulcanization on a rigid stress plate whose modulus is very high compared to that of the visco-elastic material, and where each damping system is located in the zone where the visco-elastic material located between the rack
  • Each damping system is arranged on a vibration belly of one of the six modes of highest energy, that is to say the first three modes of flexion perpendicular to the plane of the racket, the first two modes of flexion in the plane of the racket, as well as the first mode of coupling of flexural vibrations perpendicular to the plane of the racket and of torsion with respect to its longitudinal axis.
  • the thickness of the plate of visco-elastic material is between 0.5 and 1.2 mm
  • the damping coefficient of this visco-elastic material is between 0.8 and 1.2
  • the thickness of the stress plate is between 0.5 and 1.2 mm.
  • each shock absorber has a Zicral stress plate, 0.6 mm thick, which is bonded to a blade of visco-elastic material 0.8 mm thick, and with a damping coefficient generally called ⁇ , of the order of 1.2, optimal in a temperature range between 10 and 30 ° C and for vibration frequencies between 10 and 1000 Hz.
  • This racket can therefore include at least one shock absorber.
  • visco-elastic working in shear, which is placed in the area where the visco-elastic material located between the racket and the Zicral stress plate is most stressed in shear deformation: it thus absorbs and dissipates a large amount of energy that is not returned to the structure. The effect of the vibration is then modified, reducing the amplitude of movement of the structure.
  • shock absorber (s), optionally combined, on the bridge, on the branches, on the sides of the branches, or on any other part of the racket located in areas capable of supplying great energy to the material.
  • visco-elastic constituting the lower part of the damping element.
  • the shock absorber reduces the amplitude of certain vibration modes, which causes a modification of the player's sensations.
  • the damping system is positioned on the outside and / or inside of the arms of the racket, from the front part of the handle. to the root of the bridge. We then feel the racket as being more flexible, with a longer ball contact.
  • the shock absorber system By positioning the shock absorber system on the deck or on either side of the deck and / or on the head or on either side of the basket head, symmetrically with respect to both the longitudinal axis of the racket and / or at the plane of the racket, the amplitude of both the second and third modes of vibration in flexion perpendicular to the median plane of the racket is damped, as well as the amplitude of the first mode of vibration coupling the flexion perpendicular to the plane racket median and torsion with respect to the median longitudinal axis of the racket.
  • the racket appears both more nervous and with improved performance. For reasons of decoration, these strictly symmetrical shapes can be slightly modified.
  • this tennis racket 1 is composed of a handle 12 extended by two branches 6,7 which carry the basket 3, the lower part of which forms the bridge 4.
  • the basket 3 itself carries the sieve 5, composed of longitudinal and transverse ropes and forming the striking surface.
  • each of these two shock absorbers is formed of a plate 10 of visco-elastic material on which a stress plate 11 is bonded, in Zicral for example.
  • Each damper, such as 8, is glued flat to the deck 4 by the face of the plate 10 which is opposite to the stress plate 11.
  • the plates 10 and 11 are of the same shape and dimensions and their periphery matches that of the surface of the bridge 4 on which the plate 10 is glued, while being slightly lower thereto.
  • the thickness of the plate 10 is 0.8 mm and its damping coefficient ⁇ is 1.2 in the temperature range between 10 and 30 ° C, which is the most frequent use range of the racket.
  • the stress plate of Zicral 11 has a thickness of 0.6 mm.
  • Each shock absorber, 8 or 9 is completely symmetrical with respect to the longitudinal axis y'y of the racket and can therefore be considered to be composed of a pair of shock absorbers 81, 82 symmetrical with respect to this axis y, y and working in shear and in opposition. In this case there is a pair 8.9 of shock absorbers each placed on either side of the bridge.
  • each pair of dampers 81.82 dampens the vibration modes which arise in the plane of the racket, which increases the comfort of the player.
  • a racket 1 with an inverted bridge 4 has been described, but this racket can be of any other kind, for example with a bridge perpendicular to the axis y'y, with a bridge of curvature opposite to that of the head of the basket, with a bridge having two opposite and opposite curvatures, etc.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Vibration Prevention Devices (AREA)
  • Prostheses (AREA)
  • Tires In General (AREA)
  • Polarising Elements (AREA)
  • Laminated Bodies (AREA)

Claims (21)

  1. Racket für Ballspiele, insbesondere für das Tennisspiel, mit wenigstens einem lokal angeordneten Schwingungsdämpfersystem, das eine mit einem viskoelastischen Material kombinierte Belastungplatte aufweist, auf Scherung beanspruchbar ist und fest auf der Außenseite der Struktur des Rackets angebracht ist, wobei jedes Schwingungsdämpfersystem aus einer Platte (8, 9, 14 bis 20) aus wei Materialian besteht, von denen das eine ein visko-elastiaches Material (10) ist, dessen Dämpfungskoeffizient Beta in einem Temperaturbereich zwischen 10 und 30°C und bei Frequenzen von 0 bis 1000 Hz wenigstens 0,5 beträgt und das auf eine starre Belastungsplatte (11) aufvulkanisiert ist, deren Modul sehr viel größer ist als derjenige des visko-elastischen Materials, und wobei jedes Dämpfersystem in der Zone liegt, in der das zwischen dem Racket und einer Belastungsplatte liegende visko-elastische Material für eine der Schwingungsmoden mit größerer Energie am meisten auf Scherverformung beansprucht ist, d.h. im Bereich eines Schwingungsbauchs einer der Schwingungsmoden mit größerer Energie.
  2. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungssystem (14 bis 17) auf einem Schwingungsbauch angeordnet ist, der der ersten Biegeschwingungsmode senkrecht zur Ebene des Rackets entspricht.
  3. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungssystem (8, 9, 18, 19, 20) auf einem Schwingungsbauch angeordnet ist, der der zweiten Biegeschwingungsmode senkrecht zur Ebene des Rackets entspricht.
  4. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungssystem (8, 9, 18, 19, 20) auf einem Schwingungsbauch angeordnet ist, der der dritten Biegeschwingungsmode senkrecht zur Ebene des Rackets entspricht.
  5. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungssystem (8, 9) auf einem Schwingungsbauch angeordnet ist, der der ersten seitlichen Biegeschwingungsmode des Rackets entspricht.
  6. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungsystem (19, 20) auf einem Schwingungabauch angeordnet ist, der der zweiten seitlichen Biegeschwingungsmode des Rackets entspricht.
  7. Racket nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Dämpfungssystem (8, 9, 18, 19, 20) auf einem Schwingungsbauch angeordnet ist, der der ersten Kopplungsschwingungsmode der Durchbiegung senkrecht zur Ebene des Rackets und der Torsion um seine Längsachse entspricht.
  8. Racket nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Dicke der Platte (10) aus visko-elestischem Material zwischen 0,5 und 1,2 mm liegt, daß der Dämpfungskoeffizient Bete des visko-elastischen Materials zwischen 0,8 und 1,2 liegt und daß die Dicke dar Belastungsplatte zwischen 0,5 und 1,2 mm liegt.
  9. Racket nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Dicke der Platte (10) aus visko-elastischem Material in der Größenordnung von 0,8 mm und ihr Dämpfungskoeffizient Beta in der Größenordnung von 1,2 liegt.
  10. Recket nach Anspruch 9, dadurch gekennzeichnet, daß die Belastungsplatte (11) aus Zicral besteht und eine Dicke in der Größenordnung von 0,6 mm hat.
  11. Racket nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß wenigstens eine auf der Brücke des Racket (1) befestigtes Dämpfungselement (8 und/oder 9) vorgesehen ist.
  12. Racket nach Anspruch 11, dadurch gekennzeichnet, daß zwei gekoppelte Dämpfungselemente (8 und 9) vorgesehen sind, die zu beiden Seiten der Brücke (4) befestigt sind.
  13. Racket nach einem der Ansprüche 1 bis 10, dadurch gekennzdichnet, daß wenigstens ein an dem Rahmen (3) befestigtas Dämpfungselement (18 und/oder 19 und/oder 20) vorgesehen ist.
  14. Racket nach Anspruch 13, dadurch gekennzeichnet, daß wenigstens ein an der Kopfseite des Rahmens (3) befestigtes Dämpfungselement (18) vorgesehen ist.
  15. Racket nach Anspruch 14, dadurch gekennzeichnet, daß zwei gekoppelte Dämpfungselemente (18) vorgesehen sind, die an der Kopfseite des Rahmens (3) zu beiden Seiten von dessen Ebene (2) befestigt sind.
  16. Racket nach einem der Ansprüche 13 bis 15, dadurch gekennzeichnet, daß wenigstens zwei gekoppelte Dämpfungselemente (13, 20) vorgesehen sind, die an dem Rahmen (3) zu beiden Seiten der Längsachse (y'y) des ackets befestigt sind.
  17. Racket nach Anspruch 16, dadurch gekennzeichnet, daß wenigstens vier gekoppelte Dämpfungselemente (19, 20) vorgesehen sind, die an dem Rahmen (3) zu beiden Seiten von dessen Ebene (2) und seiner Längsachse (y'y) befestigt sind.
  18. Racket nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß wenigstens ein Dämpfungselement (14 und/oder 15 und/oder 16 und/oder 17) vorgesehen ist, das innen oder außen an einem Schenkel (6 und/oder 7) des Rackets befestigt ist.
  19. Racket nach Anspruch 18, dadurch gekennzeichnet, daß zwei gekoppelte Dämpfungselemante (16 und 17) vorgesehen sind, die an der Innenseite der beiden Schenkel (6, 7) befastigt sind.
  20. Racket nach Anspruch 18, dadurch gekennzeichnet, daß zwei gekoppelte Dämpfungselemente (14 und 15) vorgesehen sind, die an der Außenseite der beiden Schenkel (6, 7) befestigt sind.
  21. Racket nach Anspruch 18, dadurch gekennzeichnet, daß vier gekoppelte Dämpfungselemente (14 bis 17) vorgesehen sind, die an der Innenseite und an der Außenseite der beiden Schenkel (6, 7) befestigt sind.
EP87420349A 1986-12-22 1987-12-21 Tennisschläger Expired - Lifetime EP0275805B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87420349T ATE66627T1 (de) 1986-12-22 1987-12-21 Tennisschlaeger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8618458A FR2608444B1 (fr) 1986-12-22 1986-12-22 Raquette de tennis
FR8618458 1986-12-22

Publications (2)

Publication Number Publication Date
EP0275805A1 EP0275805A1 (de) 1988-07-27
EP0275805B1 true EP0275805B1 (de) 1991-08-28

Family

ID=9342507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87420349A Expired - Lifetime EP0275805B1 (de) 1986-12-22 1987-12-21 Tennisschläger

Country Status (7)

Country Link
US (1) US4875679A (de)
EP (1) EP0275805B1 (de)
JP (1) JPS63164968A (de)
AT (1) ATE66627T1 (de)
DE (2) DE3772549D1 (de)
ES (1) ES2003855A4 (de)
FR (1) FR2608444B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406734B (de) * 1993-08-05 2000-08-25 Degaris Kenneth Godfrey Schlägerrahmen

Families Citing this family (42)

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GB8828145D0 (en) * 1988-12-02 1989-01-05 Dunlop Ltd Games racket with vibration-damping assembly
GB8828144D0 (en) * 1988-12-02 1989-01-05 Dunlop Ltd Games racket with vibration-damping assembly
US4964635A (en) * 1989-04-14 1990-10-23 Fitzgerald Gary C Tennis racket
US5165687A (en) * 1989-07-06 1992-11-24 Soong Tsai C Damping layer assembly with constraining plate layer for sports racket
US5314180A (en) * 1989-08-28 1994-05-24 Toray Industries, Inc. Sports instrument and impact-absorbing element to be attached to sports equipment
CA2039712A1 (en) † 1989-08-28 1991-03-01 Masahiro Yamagishi Sports instrument and impact-absorbing element to be attached to sports instrument
US5039096A (en) * 1990-05-02 1991-08-13 Dennis Chen Shock absorbing racket
GB9009831D0 (en) * 1990-05-02 1990-06-27 Dunlop Ltd Games racket frame
US5236198A (en) * 1990-05-02 1993-08-17 Dunlop Limited Games racket frame
DE4037568A1 (de) * 1990-11-26 1992-05-27 Donnay Int Sa Tennisschlaeger
AU635417B2 (en) * 1991-04-24 1993-03-18 Chin-San You A sports racket frame
US5524884A (en) * 1991-07-18 1996-06-11 Dunlop Limited Striking implements
FR2680694A1 (fr) * 1991-08-28 1993-03-05 Rossignol Sa Dispositif amortisseur de vibrations pour instrument a manche et tete de frappe.
US5106086A (en) * 1991-10-23 1992-04-21 Acosta Richard J Vibration dampener for rackets
US5133552A (en) * 1991-11-25 1992-07-28 Lisco, Inc. Floating yoke piece for a racket
FR2684013B1 (fr) * 1991-11-25 1994-10-28 Rossignol Sa Raquette pourvue d'un dispositif d'amortissement des vibrations.
FR2684560B1 (fr) * 1991-12-04 1994-10-28 Rossignol Sa Raquette pourvue d'un dispositif d'amortissement des vibrations.
US5178386A (en) * 1991-12-23 1993-01-12 Tzeng Muh Wu Transparent decorated throat piece for a racket
FR2689771B1 (fr) * 1992-04-14 1994-06-03 Rossignol Sa Tete de club de golf.
TW286290B (de) * 1992-07-16 1996-09-21 Minnesota Mining & Mfg
US5409229A (en) * 1992-08-05 1995-04-25 Callaway Golf Company Golf club head with audible vibration attenuation
JP2526923Y2 (ja) * 1992-09-22 1997-02-26 住友ゴム工業株式会社 ゴルフクラブヘッド
US5599018A (en) * 1994-03-31 1997-02-04 Radel; Harry Strung racket
US5562283A (en) * 1995-05-11 1996-10-08 Prince Sports Group, Inc. Sports racquet having power ring
US5643111A (en) * 1995-06-02 1997-07-01 Igarashi Lawrence Y Golf clubs with elastomeric vibration dampener
US5637045A (en) * 1995-06-02 1997-06-10 Igarashi; Lawrence Y. Hollow wood-type golf club with vibration dampening
US5651545A (en) * 1995-06-07 1997-07-29 Roush Anatrol, Inc. Vibration damping device for stringed racquets
FR2740349B1 (fr) 1995-10-30 1997-11-21 Dynastar Skis Sa Dispositif amortisseur de vibrations destine a etre monte sur un article de sport
US5704259A (en) * 1995-11-02 1998-01-06 Roush Anatrol, Inc. Hand operated impact implement having tuned vibration absorber
US5935027A (en) * 1995-12-28 1999-08-10 Roush Anatrol, Inc. Multi-mode vibration absorbing device for implements
US6162138A (en) * 1998-11-16 2000-12-19 Mckee; Roger W. Attachments presenting rotation aid surfaces for tennis racquet and method of attaching the same
JP3734008B2 (ja) * 1999-06-14 2006-01-11 Ｓｒｉスポーツ株式会社 ラケットフレーム
US6431996B1 (en) * 2000-07-11 2002-08-13 Karsten Manufacturing Corporation Golf club shaft with suppressed vibration modes
EP1177816B1 (de) * 2000-08-01 2004-11-03 Head Technology GmbH Schläger für Ballspiele und Herstellungsverfahren dafür
JP3416634B2 (ja) 2000-09-21 2003-06-16 住友ゴム工業株式会社 ダイナミックダンパー
FR2821756B1 (fr) 2001-03-12 2003-06-06 Rossignol Sa Raquette de tennis, de squash ou de badmington
FR2822715B1 (fr) 2001-03-29 2003-05-16 Rossignol Sa Raquette de tennis ou de squash
US6852048B1 (en) 2002-05-17 2005-02-08 Ef Composite Technologies, L.P. Guiding and vibration dampening string tubes for sports racquets
US7097576B2 (en) 2002-05-17 2006-08-29 Ef Composite Technologies, L.P. String bearing assemblies for sports racquets
GB2391819B (en) * 2002-07-10 2005-05-11 Sumitomo Rubber Ind Racket
TWM242251U (en) * 2003-07-01 2004-09-01 Yuan Min An Entpr Co Ltd Racket with shock absorption features
US11224788B2 (en) 2019-10-29 2022-01-18 Easton Diamond Sports, Llc Vibration-damping end caps for ball bats

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FR1388902A (fr) * 1963-12-31 1965-02-12 Raquette pour tennis et jeux similaires
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DE2558709C3 (de) * 1975-12-24 1982-02-11 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Elastomere Dämpfungseinrichtung
DE2719649A1 (de) * 1976-05-05 1977-11-24 Paul Lafourcade Rahmen fuer ballschlaeger, insbesondere tennisschlaeger und verfahren zu seiner herstellung
US4044625A (en) * 1976-07-01 1977-08-30 Chicago Pneumatic Tool Company Vibration isolating hand grip for shank of a percussive chisel
CH614380A5 (de) * 1976-07-28 1979-11-30 Rossignol Sa
US4538812A (en) * 1982-02-22 1985-09-03 Mugford David B Weight device for athletic racket
US4627635A (en) * 1983-09-20 1986-12-09 Koleda Michael T Vibration damping units and vibration damped products
DE3342012A1 (de) * 1983-11-22 1985-05-30 Ingenieurbüro Seiler GmbH, 4937 Lage Schlaggeraet mit kompensationsgewichten - beispielsweise tennisschlaeger
US4660832A (en) * 1985-03-25 1987-04-28 Shomo Robert D Shock and vibration absorbent handle
JPH0532142Y2 (de) * 1985-10-16 1993-08-18
DE3704121A1 (de) * 1986-02-19 1987-08-20 Nippon Musical Instruments Mfg Schwingungsabsorber fuer ein rakett

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406734B (de) * 1993-08-05 2000-08-25 Degaris Kenneth Godfrey Schlägerrahmen

Also Published As

Publication number Publication date
JPS63164968A (ja) 1988-07-08
DE3772549D1 (de) 1991-10-02
EP0275805A1 (de) 1988-07-27
FR2608444A1 (fr) 1988-06-24
US4875679A (en) 1989-10-24
DE275805T1 (de) 1989-01-05
ATE66627T1 (de) 1991-09-15
ES2003855A4 (es) 1988-12-01
FR2608444B1 (fr) 1989-03-31

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