EP0611316B1 - Ausgeglichener golfclub - Google Patents

Ausgeglichener golfclub Download PDF

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Publication number
EP0611316B1
EP0611316B1 EP91918478A EP91918478A EP0611316B1 EP 0611316 B1 EP0611316 B1 EP 0611316B1 EP 91918478 A EP91918478 A EP 91918478A EP 91918478 A EP91918478 A EP 91918478A EP 0611316 B1 EP0611316 B1 EP 0611316B1
Authority
EP
European Patent Office
Prior art keywords
golf club
shaft
length
club according
club
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
EP91918478A
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English (en)
French (fr)
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EP0611316A1 (de
Inventor
Jean-Luc Veux
Benoît VINCENT
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.)
TaylorMade Golf Co Inc
Original Assignee
TaylorMade Golf Co Inc
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Filing date
Publication date
Application filed by TaylorMade Golf Co Inc filed Critical TaylorMade Golf Co Inc
Publication of EP0611316A1 publication Critical patent/EP0611316A1/de
Application granted granted Critical
Publication of EP0611316B1 publication Critical patent/EP0611316B1/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
    • 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
    • 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
    • A63B53/005—Club sets
    • 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 an improved golf club more particularly of the "wood” type, as well as a set comprising such a club and having the same advantages as said club.
  • a golf club essentially comprises a handle commonly called a "shaft”, at the lower end of which is secured a head, or striking member, and at the upper end, a handle also called a "grip”.
  • the current trend is to make light golf clubs; on the one hand, to obtain a performance gain in terms of length and accuracy of the stroke, and on the other hand, to improve the playing comfort of the player; whether beginner or professional player.
  • a lightening of the head of the club directly influences the length of the stroke and therefore causes the opposite effect to that desired. Also the mass gain is obtained on the handle thanks to the use of composite materials technology. Clubs equipped with such sleeves make it possible to play strokes with a length increased by about 10% compared to that of clubs equipped with traditional sleeves.
  • the aim of the present invention is therefore to overcome the above-mentioned drawbacks, particularly by proposing a lean club, therefore efficient and whose dynamic balancing is identical or very close to that of the clubs preferred by most players.
  • the aim is also to offer a club set having the same advantages as the club thus created.
  • the club of the invention consists of a handle at the upper end of which is secured a grip and at the lower end, a head; the total mass of said club being less than 340 grams and is characterized in that the ratio of the length of the equivalent hanged to the length of the club is less than 0.87 preferably between 0.85 and 0.87.
  • An additional feature of the invention is that the mass distribution on the club is such that the mass of the grip and the handle represents 30 to 40% of the total mass of the club.
  • Another characteristic of the invention is that the grip is light and its mass is less than or equal to 35 grams.
  • the golf club of FIG. 1 comprises a handle (1) of length ls and mass ms at the lower end (10) to which a head (2) of mass mt is secured. From the upper end (11) of the handle (1) is secured a handle (3) of mass mg and length lg and extending over part of the length of the handle.
  • the length of the club (Lc) is considered to be the length measured between a point O 'on the longitudinal axis (I, I') of the handle located 5 mm from the upper end or point O of the handle (3), and a point O '' corresponding to the perpendicular projection on the axis (I, I ') of the center of gravity (20) of the head (2) of the club.
  • the club of the invention mainly concerns a “driver”, that is to say the club having the greatest length (Lc) among the clubs of the same set. But as will be explained later the invention extends in the same way to any club of said set which have the same advantages as the "driver" as they have been defined before.
  • the "driver” is a club whose length (Lc) can vary from 1041.4 mm (or 41 inches) for the shortest to 1143 mm (or 45 inches) approximately. Typically, the average length is around 1092.2 mm (43 inches).
  • the applicant has established a graph illustrated in FIG. 2 on which measurements made on 26 drivers on the market appear to be compared with a driver of the invention.
  • the total mass (MT) expressed in grams of the driver is shown on the abscissa and the ratio of the equivalent pendulum length (LPE) to the length (Lc) of the club is shown on the ordinate.
  • the LPE is given in mm and corresponds to a length equivalent to that of a simple pendulum whose oscillation period (T) is equal to that of the club if it is mounted pivoting around a point O1 corresponding to the point of rotation of the club in the hands of the player. In our example, it is located on the axis (I, I ') 101.6 mm (4 inches) from point O.
  • LPE (T 2 g) / 4 ⁇ 2 (g being the gravitational constant expressed in mm / s2).
  • FIG. 2 The characteristic of the invention is illustrated in FIG. 2.
  • the applicant has noticed that among the so-called “heavy” drivers numbered from 1 to 11 having a mass greater than approximately 340 grams, only clubs 1 to 4 with an LPE / Lc ratio of less than 0.87 have satisfactory dynamic balancing during the "swing".
  • the clubs numbered from 5 to 11 have proved to be generally unsatisfactory, as have the so-called "light” clubs, that is to say those whose mass is less than 340 grams and numbered from 12 to 26.
  • clubs 12 to 26 have shown themselves to be more efficient in terms of speed of departure of the ball and therefore distance of the stroke played. This observation enabled the applicant to determine the characteristics of the driver of the invention whose total mass (MT) is less than 340 grams, preferably between 280 and 340 grams and the LPE / Lc ratio is less than 0.87, preferably between 0.87 and 0.85.
  • An additional advantageous characteristic of the invention consists in distributing the mass over the club in such a way that the sum of the mass of the handle (mg) and the mass of the handle (ms) is between 30 and 40% of the mass total of the club (MT), which allows to keep a traditional head mass greater than at least 190 grams.
  • Point 27 in Figure 2 illustrates the position on the graph of an example club according to the invention having a total mass equal to 322 grams and an LPE / Lc ratio equal to 0.866.
  • Table 1 CLUB HEAD HANDLE HANDLE Mass (in g) 322 205 82 35 Cdg position (in mm) 840 (compared to O) 1095 (compared to O ') 499 (compared to O ') 100 (relative to O) Inertia (in kg.m2) 4,983.10 ⁇ 2 2.2.10 ⁇ 4 7.1.10 ⁇ 2 2,3.10 ⁇ 4 Length (in mm) 1095 (Lc) 1057.3 260
  • the lightening of the club can be obtained by choosing a handle whose mass (mg) is less than 35 grams, preferably between 25 and 35 grams.
  • a handle generally made of elastomeric material to have a thin and substantially constant thickness of the order of 1 to 2.5 mm.
  • the characteristics of mass (ms), position of the center of gravity (Gs) and inert (Is) of the handle can be optimized by calculation.
  • FIG 3 shows a prior art golf club with a handle (1), a head (2) and a handle (3).
  • the handle (1) has a regular frustoconical shape, the weakest section of which is located at its lower end (1), which is embedded in the head (2), and the strongest section is located at its upper end (11 ) from which extends the handle (3).
  • regular tapered shape it is meant that the generatrix G of the truncated cone formed by the handle (1) is substantially rectilinear and forms an angle ⁇ with the median longitudinal axis (I, I ') as shown in Figure 3b.
  • the thickness (e) of the handle is variable along the handle and increases towards the end (11) of the handle so that the section is sufficient in the grip zone of the hands.
  • the handle (1) comprises a first portion (13a) in the form of a truncated cone of length ls1 partially or completely covered by the handle (3) of thin, substantially constant length lg.
  • the handle comprises a second remaining portion (13b) in the form of a truncated cone of length ls2 also connecting to the first portion (13a).
  • the generator G1 of the first portion (13a) has an average angle ⁇ 1 relative to the axis (I, I ') and greater than the average angle ⁇ 2 formed between the generator G2 of the second portion (13b) and the axis (I, I ').
  • the generators G1 and G2 are rectilinear but it is accepted that they can have a slight curvature in particular for the generator G1 of the first portion (13a).
  • FIGS. 5 to 5c show another example of possible configuration of the handle (1) leading to the same advantages.
  • the handle (1) comprises a first upper frustoconical portion (14a) of length ls1 completely or partially covered only by the handle (3) of length lg.
  • a second frustoconical portion (14b) not covered by the handle extends to the lower end (10) of the handle.
  • the lower end (140a) of diameter d1 of the first portion (14a) is linked to the upper end of diameter d2 (140b) of the second portion (14b) via a third connection portion (14c ) of length ls3; the diameter d1 of the first portion being less than the diameter d2 of the second portion.
  • the generator G3 of the handle (3) can advantageously be confused with the generator G'3 of the second portion (14b).
  • the handle is integrated flush with the handle (1).
  • the diameter d2 of the second portion being at any point greater than the diameter of a handle of the prior art like that of FIG. 3; the handle is more rigid in flexion and torsion than a conventional handle without being heavier.
  • Figure 5c shows an improvement made to the club of Figure 5 on which is added a connecting ring (16) covering the third connection portion (14c).
  • This ring can advantageously be made of viscoelastic material having damping properties for example.
  • the sleeves (1) of the examples in FIGS. 4b and 5b are preferably produced in a composite structure based on carbon fibers and organic resin of the epoxy type for example.
  • the manufacturing process for such sleeves is described in French patent applications No. 90 15387 and No. 90 15388 belonging to the applicant and which are added to the present description.
  • FIG. 6 illustrates another embodiment of the invention.
  • the handle (3) is conventional and has a mass (mg) of between 45 and 55 grams, preferably 50 grams.
  • the handle (1) is very light and has a mass of less than 80 grams and includes a flyweight (4) located in an area (15) located at a distance d from O 'equal to about 0.5 Lc and of length equal to about 0.15 Lc.
  • the flyweight has a mass between 1 and 40 grams.
  • the area (15) defined in the context of the invention corresponds to the area for which dynamic balancing is carried out by adding the minimum mass by the counterweight. This characteristic is illustrated as an example in the graph in FIG. 7 which shows the variation of the LPE / Lc ratio as a function of the position of the counterweight (4) relative to the point O '.
  • Curve C1 illustrates an example of a non-jogged handle and whose balancing is not satisfactory.
  • Curves C2 and C3 illustrate two examples with a weight of 12 and 16 grams respectively.
  • the handle (1) of Figure 6 is made of composite material based on carbon fibers and resin.
  • the counterweight (4) can be arranged inside the handle (1) as shown in FIG. 6a.
  • the counterweight can consist of an elastomer plug or other deformable material. It is also possible to envisage having a flyweight (4) in the form of a ring on the external surface of the handle (1) as in the case of FIG. 6b. It can also fill a housing (17) provided for this purpose so as to come flush with the external surface of the handle as illustrated in FIG. 6c. Finally, the counterweight (4) can be integrated into the internal structure of the handle as shown in FIG. 6d.
  • the present invention also extends to a golf club set comprising at least one club of the invention and in which each club which composes it has an LPE / Lc ratio of less than 0.87, preferably between 0.87 and 0.85.
  • the other clubs in the set have a total mass greater than that of the club of the invention, if this one is the driver, due to the mass of the head which increases as Lc decreases in the set.
  • the head mass can vary from a minimum mass of 190 grams for a driver to a maximum mass of 350 grams for a putter.

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

Claims (20)

  1. Golfschläger, vorzugsweise ein Driver, der eine Schaft (1) aufweist, an deren unterem Ende (10) ein Kopf (2) montiert ist und an deren oberem Ende (11) ein Griff (3) montiert ist; wobei der Schläger eine Gesamtmasse aufweist, die kleiner als 340 g ist, dadurch gekennzeichnet, daß das Verhältnis: Länge des Pendeläquivalents/Länge des Schlägers kleiner als 0,87 ist, und vorzugsweise zwischen 0,87 und 0,85 liegt.
  2. Golfschläger gemäß Anspruch 1, dadurch gekennzeichnet, daß die Summe der Masse des Griffs (3) und der Schaft (1) zwischen 30 und 40 Prozent der Gesamtmasse des Schlägers beträgt.
  3. Golfschläger gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Griff (3) leicht ist und eine Masse aufweist, die kleiner als 35 g ist, und die vorzugsweise zwischen 25 und 35 g beträgt.
  4. Golfschläger gemäß Anspruch 3, dadurch gekennzeichnet, daß die Schaft (1) eine Masse aufweist, die zwischen 70 und 100 g, vorzugsweise zwischen 80 und 90 g, beträgt.
  5. Golfschläger gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Griff (3) eine Masse aufweist, die zwischen 45 und 55 g beträgt.
  6. Golfschläger gemäß Anspruch 5, dadurch gekennzeichnet, daß die Schaft (1) eine Masse aufweist, die kleiner als 80 g ist.
  7. Golfschläger gemäß Anspruch 6, dadurch gekennzeichnet, daß die Schaft (1) ein Reglergewicht (4) aufweist, das in einem Bereich angeordnet ist, der sich in einem Abstand d von dem Punkt O' befindet, der ungefähr gleich 0,5 Lc ist, und sich über eine Länge erstreckt, die ungefähr gleich 0,15 Lc ist.
  8. Golfschläger gemäß Anspruch 7, dadurch gekennzeichnet, daß das Reglergewicht (4) eine Masse aufweist, die zwischen 1 und 40 g beträgt.
  9. Golfschläger gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Reglergewicht aus einem Pfropfen gebildet ist, der im Inneren der Schaft angeordnet ist.
  10. Golfschläger gemäß Anspruch 9, dadurch gekennzeichnet, daß der Pfropfen aus einem elastomeren Material oder einem anderen deformierbaren Material ist.
  11. Golfschläger gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Reglergewicht (4) ein Ring ist, der auf der äußeren Oberfläche der Schaft (1) angeordnet ist.
  12. Golfschläger gemäß Anspruch 11, dadurch gekennzeichnet, daß der Ring (4) bündig mit der äußeren Oberfläche der Schaft in einer Aufnahme (16) angeordnet ist.
  13. Golfschläger gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, daß das Reglergewicht (4) in den inneren Aufbau der Schaft integriert ist.
  14. Golfschläger gemäß Anspruch 2 oder 3, dadurch gekennzeichnet, daß der Griff (3) eine Dicke (e) hat, die fein und im wesentlichen konstant über seine gesamte Länge (lg) ist.
  15. Golfschläger gemäß Anspruch 14, dadurch gekennzeichnet, daß der Griff (3) eine Dicke aufweist, die zwischen 1 und 2,5 mm beträgt.
  16. Golfschläger gemäß Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Schaft einen ersten Abschnitt (13a) in Form eines Kegelstumpfes von einer Länge ls1 aufweist, der teilweise zumindest durch den Griff (3) der Länge lg überdeckt ist, und sich an einen zweiten Abschnitt (13b) anschließt, wobei der erste Abschnitt in Form eines Kegelstumpfes (13a) eine Mantellinie G1 hat, deren mittlerer Winkel θ1 bezüglich der longitudinalen Achse (I, I') größer als der mittlere Winkel θ2 der Mantellinie G2 des zweiten verbleibenden Abschnittes (13b) in Form eines Kegelstumpfes von der Länge ls2 der Schaft ist.
  17. Golfschläger gemäß Anspruch 14 oder 15, dadurch gekennzeichnet, daß die Schaft einen ersten oberen kegelstumpfförmigen Abschnitt (14a) von einer Länge ls1, der teilweise zumindest durch den Griff (3) von einer Länge lg überdeckt ist, und einen zweiten unteren kegelstumpfförmigen Abschnitt (14b) aufweist, der nicht durch den Griff überdeckt ist und sich bis zum unteren Ende der Schaft erstreckt; wobei der Durchmesser d1 des unteren Endes (40a) des ersten oberen kegelstumpfförmigen Abschnittes (14a) kleiner als der Durchmesser d2 des oberen Endes (41b) des zweiten unteren kegelstumpfförmigen Abschnittes (14b) ist, und wobei die ersten und zweiten kegelstumpfförmigen Abschnitte (14a, 14b) durch einen dritten Verbindungsabschnitt (14c) von einer Länge ls3 verbunden sind.
  18. Golfschlägersatz, der mehrere Schläger mit unterschiedlicher Länge (Lc) aufweist, dadurch gekennzeichnet, daß er zumindest einen Schläger gemäß den Ansprüchen 1 bis 17 aufweist, und dadurch, daß jeder Schläger des Satzes ein Verhältnis LPE/Lc aufweist, das kleiner als 0,87 ist und vorzugsweise zwischen 0,87 und 0,85 liegt.
  19. Golfschlägersatz gemäß Anspruch 18, dadurch gekennzeichnet, daß jeder Schläger das gleiche statische Moment gemessen bei 355,6 mm (oder 14 Inch) aufweist.
  20. Golfschlägersatz gemäß Anspruch 18 oder 19, dadurch gekennzeichnet, daß die Masse des Kopfes von einem minimalen Wert von 190 g bis zu einem maximalen Wert von 350 g variieren kann.
EP91918478A 1991-10-17 1991-10-17 Ausgeglichener golfclub Expired - Lifetime EP0611316B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1991/000813 WO1993007935A1 (fr) 1991-10-17 1991-10-17 Club de golf equilibre

Publications (2)

Publication Number Publication Date
EP0611316A1 EP0611316A1 (de) 1994-08-24
EP0611316B1 true EP0611316B1 (de) 1996-04-17

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US (2) US5467984A (de)
EP (1) EP0611316B1 (de)
WO (1) WO1993007935A1 (de)

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JP7326850B2 (ja) * 2019-04-26 2023-08-16 住友ゴム工業株式会社 ゴルフクラブ
CN111351621A (zh) * 2019-10-11 2020-06-30 东莞市冠伦精密机械有限公司 一种高尔夫球快速杆头反弹系数自动检测机
JP2021102029A (ja) * 2019-12-26 2021-07-15 グローブライド株式会社 ゴルフクラブヘッドを備えるゴルフクラブ
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US5467984A (en) 1995-11-21
US5569097A (en) 1996-10-29
WO1993007935A1 (fr) 1993-04-29
EP0611316A1 (de) 1994-08-24

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