EP0594812B1 - Golfschlägerkopf - Google Patents

Golfschlägerkopf Download PDF

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Publication number
EP0594812B1
EP0594812B1 EP93909021A EP93909021A EP0594812B1 EP 0594812 B1 EP0594812 B1 EP 0594812B1 EP 93909021 A EP93909021 A EP 93909021A EP 93909021 A EP93909021 A EP 93909021A EP 0594812 B1 EP0594812 B1 EP 0594812B1
Authority
EP
European Patent Office
Prior art keywords
golf club
club head
damping device
cavity
sole
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
EP93909021A
Other languages
English (en)
French (fr)
Other versions
EP0594812A1 (de
Inventor
Patrice Hutin
Roger Cleveland
Daniel Stone
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
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, Rossignol SA filed Critical Skis Rossignol SA
Publication of EP0594812A1 publication Critical patent/EP0594812A1/de
Application granted granted Critical
Publication of EP0594812B1 publication Critical patent/EP0594812B1/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
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/045—Strengthening ribs
    • A63B53/0454—Strengthening ribs on the rear surface of the impact face plate
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/047—Heads iron-type
    • 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
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2209/00—Characteristics of used materials
    • A63B2209/02—Characteristics of used materials with reinforcing fibres, e.g. carbon, polyamide fibres
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/04—Heads
    • A63B53/0466—Heads wood-type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S273/00—Amusement devices: games
    • Y10S273/23—High modulus filaments

Definitions

  • the invention relates to a golf club head.
  • a golf club head As is known, a golf club head, called “iron”, “wood” or “putter”, is either forged, or molded, or machined and is intended to be connected to a handle.
  • This head has on the front a flat striking face, below a sole and a rear face on the back of the striking face. According to the manufacturers, according to the results sought and according to the manufacturing techniques used, this rear face can have the most diverse shapes.
  • bitter hollow faces molded irons
  • rear faces having a blade shape forged irons.
  • wood we know metal wood, whose single or multi-piece body defines a closed cavity, and the wood itself, solid or laminated.
  • a device for damping vibrations consisting of a stress plate with high elasticity modulus, glued to a sheet of viscous material. elastic, itself assembled to the ski by gluing. This device is placed either near the heel of the ski, or at the start of the tip or at the front of the binding area of the boot.
  • the invention relates to a golf club head which makes it possible to attenuate the vibrations caused during hitting and to improve the sensations of the player.
  • This golf club head formed of thin walls defining a front part comprising a striking face, a sole and a bitter part disposed above the sole, defining a cavity on the back of the front part, and having a damping element vibration, is characterized in that at least one of the thin walls has protruding a vibration damping element, constituted by a stress plate having a modulus of elasticity greater than ten thousand MPa, connected to this rear part by a visco material -elastic.
  • the invention consists in placing on a thin wall, therefore vibrating, a stress plate, connected to this face by a visco-elastic material.
  • the invention consists, more precisely in the heads of golf clubs, in using such a damping element known in a totally different technical field, but by locating it at a precise point, namely on a thin partition, in particular the rear face of the striking face.
  • the invention is also distinguished from this state of the art by the fact that here the stress plate no longer plays the role of "beater”, but of a stress device working in shear.
  • Visco-elastic shock absorbers the main characteristics of which are that they have a low Young E modulus and a high damping coefficient, have long been in common use in aeronautics, in cars or in the manufacture of skis. It is therefore unnecessary to describe them here in detail.
  • the essential characteristic is the intrinsic damping coefficient (tangent delta). This characteristic is mainly influenced by the temperature and the frequency of vibration. It is important that for the intended use, this material has a maximum damping zone, at room temperature.
  • the damping coefficient must in practice be between 0.4 and 1.2. Beyond 1.2, there is too great an absorption of the energy generated by the impact on the ball, therefore a loss of efficiency. Below 0.4, there is an insensitive effect of the visco-elastic material.
  • the visco-elastic materials used exhibit their optimal qualities at the usual temperatures for using golf clubs, in particular in the vicinity of ambient temperature.
  • the sheet of visco-elastic material should have a thickness of less than two millimeters, and preferably between 0.5 and one millimeter. Indeed, if this thickness is less than 0.5 mm, the effects obtained are practically non-existent. On the other hand, if this thickness exceeds 1.0 mm, there is a loss of yield for a higher price. Good results are obtained with a sheet of the order of 0.5 mm.
  • viscoelastic material materials in common use are used for this application, for example in the ski area. Mention may be made of butyl rubbers, synthetic elastomers, alone, as a mixture or loaded.
  • the characteristic visco-elastic sheet adheres to the rigid plate and to the corresponding rear face of the head by means of a layer of adhesive material.
  • the visco-elastic sheet comprises a double-sided adhesive so that it can be conveniently applied to the rear face on the back of the striking face.
  • the visco-elastic sheet can be constituted by a stack of several visco-elastic elementary sheets, with different characteristics.
  • the damping properties of each of them are offset in temperature for a given vibration frequency, or are offset in frequency for a given temperature.
  • the visco-elastic sheet is formed by a juxtaposition of elementary zones each having optimal damping properties, also shifted in temperature and frequency.
  • the characteristic damping element has a total mass, therefore a thickness, as small as possible, for example between 1 and 4 grams, advantageously in the vicinity of 2 to 2.5 grams.
  • the invention relates to golf clubs the head of which is formed of thin walls, that is to say of the order of a few millimeters thick, for example 3 to 5 millimeters, having on the back a cavity, either open in the shape of an L for an iron, or closed but hollow for a metal wood.
  • the damping element characteristic of the invention must be, as already said, arranged protruding on these thin walls to be effective and no longer completely embedded in the mass of the head. As the mass of this damping element is practically negligible compared to the mass of the head, the stress plate no longer functions as a "beater", but it works in shear.
  • the club is an iron, the rear face of which has a recess forming an L-shaped open cavity (molded iron), the large branch of which is parallel and integrates the striking face and the small branch of which constitutes the sole.
  • the shock absorber assembly characteristic of the invention must be positioned on the back of the striking face and at the point of impact of the bullet. It is also important that this shock absorber assembly fills only a part and not the whole of the recess defining the cavity.
  • the center of gravity of the damping element (10) is arranged in the vicinity of the center of gravity of the head (3).
  • the invention is particularly well suited to the manufacture of irons, it can also be used for the production of clubs called "putters”.
  • the characteristic damping element can be arranged in projection, either inside the cavity of the head, or on the immediate back of the striking face, or at the outside of this head by marrying part of the elongated shape thereof, but behind the head, either on the side and / or the tip, or even the sole.
  • FIG. 1 is a summary perspective view of a golf club called "iron", the head of which is shown in rear view in FIG. 2.
  • FIG. 3 is a head according to the invention also shown in rear view, and in FIG. 4 in section along the axis IV-IV 'of FIG. 3.
  • FIG. 5 is a detailed sectional view of the vibration damper assembly characteristic of the invention.
  • FIG. 6 is a perspective view of a golf club called "wood-metal" according to the invention, shown in section in FIG. 7 along the vertical plane passing through the axis VII-VII 'of FIG. 6.
  • Figures 8 to 14 schematically show other embodiments on such wood, always seen along this vertical plane passing through the axis VII-VII '.
  • Figures 15, 16 and 17 show schematically other embodiments of such wood seen along the horizontal plane passing through the axis VII-VII '.
  • Figure 18 shows schematically in section another embodiment of such wood.
  • This head (3) having an approximate section in the shape of an L, comprises respectively on the front, constituting the large branch of the L, a wall 5 millimeters thick having an external striking planar face, designated by the reference (5) ribbed, and a sole (6), forming the small branch of the L.
  • the head (3) has on the rear a recess (7) forming a cavity, the shape of which varies according to the manufacturer and the desired results.
  • This recess (7) follows a generally triangular shape rounded by 90 by 40 millimeters of sides.
  • part of this planar recess (7) receives a characteristic damping assembly, designated by the general reference (10), located protruding at its center and comprising from the outside a rigid thin plate (11), of form general heliptic having axes of 45 and 18 millimeters, for example a plate of aluminum or aluminum-zinc-magnesium alloy marketed by CEGEDUR PECHINEY under the brand "ZICRAL", having a modulus of elasticity of 12000 MPa, a thickness of one millimeter, and weighs about 2.5 grams.
  • a characteristic damping assembly designated by the general reference (10) located protruding at its center and comprising from the outside a rigid thin plate (11), of form general heliptic having axes of 45 and 18 millimeters, for example a plate of aluminum or aluminum-zinc-magnesium alloy marketed by CEGEDUR PECHINEY under the brand "ZICRAL", having a modulus of elasticity of 12000 MPa, a thickness of one millimeter, and weighs about
  • This rigid plate (11) is associated with a sheet (12) with a high damping coefficient, the two internal and external faces of which have been previously coated with a thin adhesive layer, deposited right through so as to promote the joining between the visco-elastic sheet (12) and on the one hand the rigid plate (11) and on the other hand the rear face of the head (3), and more precisely of the recess (7).
  • This visco-elastic sheet (12) of butyl rubber 1.0 mm thick has a damping coefficient at 25 ° C whose delta tangent is between 0.4 and 1.2, preferably 0.6 and 0.8.
  • the characteristic shock absorber assembly (10) is arranged on the rear face (7) in the vicinity of the center of gravity of the head, that is to say in alignment with the ideal point of impact.
  • FIGS 6 and following illustrate another embodiment of the invention applied to so-called "metal" wood.
  • the head of this wood designated by the general reference (20) ( Figures 6 and 7), connected to the handle by the fitting (21) is rotomolded.
  • the walls of the head (20) have a substantially constant thickness close to 3 millimeters. These walls constitute on the front a flat striking face (22), on the underside a sole (23) and on the sides (24) of the sides and a top (25), the whole forming a skirt or a one-piece crown ending with a rounded rear point (26).
  • the entire skirt (24-26) forms the rear face.
  • the skirt (24-26) defines a partially hollow cavity (30).
  • the sole (23) is attached by any known means not shown, which makes the cavity (30) accessible.
  • the rear face (31) of the striking face (22) has protruding a characteristic damping element (35) according to the invention, consisting of a rigid plate (36) similar to (11) and of a visco-elastic adhesive sheet (37) similar to (12).
  • the damping element (35) is also arranged on the sole (23), possibly in addition to that disposed on the immediate rear face (31).
  • the sole (23) has a housing (40) where the damping element (36, 37) is embedded to prevent it from scraping on impact.
  • the characteristic damping element (35) is arranged on the sides (24) (see FIG. 15), or envelops the rounded rear point (26) (FIG. 16), or even an essential part of the skirt ( Figures 17 and 18).
  • the clubs according to the invention have the appreciable advantage, much sought after by amateur players, of being light and nevertheless of being able to dampen vibrations, more particularly on impact, and to improve the sensations of the player.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Golf Clubs (AREA)

Claims (10)

  1. Golfschlägerkopf (3; 20), gebildet aus dünnen Wänden, die einen vorderen Teil mit einer Schlagfläche (5; 22) definieren, sowie eine Fußplatte (6; 23) und einen hinteren Teil (7; 24 bis 26) oberhalb der Fußplatte (6; 23), der wiederum einen Hohlraum (7; 30) auf der Rückseite des vorderen Teils definiert, wobei der Hohlraum ein Dämpferelement (10; 35) umfaßt, dadurch gekennzeichnet, daß mindestens eine der dünnen Wände das Dämpferelement (10; 35) als Ausstülpung aufweist, wobei dieses als Belastungsplatte (11; 36) mit einem Elastizitätsmodul E von mehr als Zehntausend (10.000) MPa ausgebildet und mit dem hinteren Teil (7; 23 bis 26) über ein zähelastisches Material (12; 37) verbunden ist.
  2. Golfschlägerkopf nach Anspruch 1, dadurch gekennzeichnet, daß die Belastungsplatte (11; 36) aus einem Material hergestellt ist, das aus folgender Gruppe ausgewählt ist: Aluminiumlegierungen, Legierungen aus Aluminium-Zink-Magnesium, durch Wärme aushärtbare, geschichtete Materialien mit einer Verstärkung aus Glasfasern oder Carbonfasern, thermoplastische Materialien mit einer Verstärkung aus Glasfasern oder Carbonfasern.
  3. Golfschlägerkopf nach Anspruch 1, dadurch gekennzeichnet, daS die Belastungsplatte (11; 36) eine Dicke zwischen 0,5 und 2 mm aufweist.
  4. Golfschlägerkopf nach Anspruch 1, dadurch gekennzeichnet, daS das zähelastische Material (12; 37) in Gestalt einer Folie mit einer Dicke von weniger als 1 mm ausgeführt ist, die einen inneren Dämpfungskoeffizient (Tangens Delta) zwischen 0,4 und 1,2 aufweist.
  5. Golfschlägerkopf nach einem der Ansprüche 1 bis 4, dessen hintere Oberfläche einen Hohlraum (7) umfaßt, dadurch gekennzeichnet, daß das Dämpferelement (10) auf der hinteren Oberfläche der Wand angeordnet ist, die die Schlagfläche (5) definiert und eine Masse zwischen 1 und 4 g aufweist.
  6. Golfeisenkopf nach Anspruch 5, dadurch gekennzeichnet, daß der Schwerpunkt des Dämpferelementes (10) in der Nähe des Schwerpunktes des Kopfes (3) angeordnet ist.
  7. Golfholzkopf (20) nach einem der Ansprüche 1 bis 4 in einer Bauart Holz-Metall, der einen inneren Hohlraum (30) definiert, dadurch gekennzeichnet, daß das Dämpferelement (35) im Inneren des Hohlraumes (30) angeordnet ist.
  8. Golfholzkopf (20) nach einem der Ansprüche 1 bis 4, mit einer Kappe, die die Schlagfläche (22) nach hinten einschließt, dadurch gekennzeichnet, daß das Dämpferelement auf einer der hinteren Oberflächen (23, 24, 25, 26) der Kappe angeordnet ist.
  9. Golfholzkopf (20) nach Anspruch 8, dadurch gekennzeichnet, daß das Dämpferelement in der Nähe der hinteren abgerundeten Spitze (26) der Kappe in Flucht mit dem Aufschlagpunkt auf der Schlagfläche (22) angeordnet ist.
  10. Golfholzkopf (20) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Dämpferelement (36, 37) in eine in der Fußplatte (23) vorgesehene Aufnahme (40) eingelassen ist.
EP93909021A 1992-04-14 1993-04-14 Golfschlägerkopf Expired - Lifetime EP0594812B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9204882A FR2689771B1 (fr) 1992-04-14 1992-04-14 Tete de club de golf.
FR9204882 1992-04-14
PCT/FR1993/000369 WO1993020904A1 (fr) 1992-04-14 1993-04-14 Tete de club de golf

Publications (2)

Publication Number Publication Date
EP0594812A1 EP0594812A1 (de) 1994-05-04
EP0594812B1 true EP0594812B1 (de) 1995-06-28

Family

ID=9429088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93909021A Expired - Lifetime EP0594812B1 (de) 1992-04-14 1993-04-14 Golfschlägerkopf

Country Status (8)

Country Link
US (1) US5316298A (de)
EP (1) EP0594812B1 (de)
JP (1) JP2661796B2 (de)
AU (1) AU660797B2 (de)
CA (1) CA2108758C (de)
DE (2) DE594812T1 (de)
FR (1) FR2689771B1 (de)
WO (1) WO1993020904A1 (de)

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DE69300223D1 (de) 1995-08-03
AU660797B2 (en) 1995-07-06
WO1993020904A1 (fr) 1993-10-28
DE69300223T2 (de) 1995-11-02
US5316298A (en) 1994-05-31
AU3957693A (en) 1993-11-18
FR2689771A1 (fr) 1993-10-15
CA2108758C (fr) 2004-11-30
JPH06510689A (ja) 1994-12-01
DE594812T1 (de) 1995-04-06
EP0594812A1 (de) 1994-05-04
FR2689771B1 (fr) 1994-06-03
CA2108758A1 (fr) 1993-10-15
JP2661796B2 (ja) 1997-10-08

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