JP2005270222A - Golf club - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club capable of increasing carry and stabilizing the direction of a hit ball. <P>SOLUTION: The golf club 10 is constituted of a head 12 where a hosel hole is formed and whose mass is ≤180 g and ≥160 g and a shaft 14 having hardness of a natural frequency of ≤225 cpm. The head 12 is provided with a shaft attaching member 16 which can be inserted and fixed to the hosel hole 12A from the bottom part side of the head 12 and has an outer shape almost the same as the hosel hole 12A. At the shaft attaching member 16, a shaft insertion hole 16C for inserting the shaft 14 from the upper side of the head 12 is formed at a prescribed angle α to the sole surface 12B of the head 12. The shaft 14 is provided with a shaft vibration suppressing member 22 composed of a roughly cylindrical fixing part 22 arranged coaxially with the shaft 14 and tightly fixed to the shaft 14, and a vibration part 24 provided on the fixing part 22 and capable of vibrating independently of the shaft 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a golf club that can increase the flight distance and stabilize the directionality of a hit ball.

  Conventionally, golf clubs that increase the head speed by reducing the weight of the head and improve the flight distance of the golf ball are widely known (see, for example, Patent Documents 1 and 2).

By the way, the impact force F at the time of impact of such a golf club can be expressed by 1/2 × m × v ² (m: head mass, v: head speed). It is proportional to the mass m and proportional to the square of the head speed v. In order to improve the flight distance, it is necessary to increase the impact force F.

JP 2004-531 A JP 2003-135629 A

  However, in the conventional golf club, the head speed v can be increased to some extent by reducing the weight of the head. However, if the head mass m is decreased, the striking force F is decreased. There is a problem that it is difficult to increase the flight distance.

  In addition, it is also common to improve the flight distance by using the bending of the shaft by giving the shaft appropriate flexibility, but if the shaft is too flexible, the directionality of the hit ball will be In particular, when the lie angle of the head at the time of impact does not match, there is a problem that blurring occurs in the directionality.

  The present invention has been made to solve such problems, and provides a golf club capable of increasing the flight distance and stabilizing the directionality of the hit ball. With the goal.

  In the present invention, a tapered hosel hole having a large diameter from the top to the bottom of the head is formed so as to penetrate therethrough, and the mass is 180 g or less and 160 g or more, and the natural frequency is 225 cpm or less. The head includes a shaft mounting member having an outer shape substantially the same shape as the hosel hole, which can be inserted into and fixed to the hosel hole from the bottom side of the head. The shaft mounting member is formed with a shaft insertion hole which is inclined at a predetermined angle with respect to the sole surface of the head and into which the shaft can be inserted from the upper side of the head. Are arranged coaxially with the shaft and fixed to the shaft in close contact with the fixed portion of the substantially cylindrical body, and provided on the fixed portion, and can vibrate independently of the shaft. The golf club includes a vibrating portion, the shaft vibration suppressing member made of, is obtained by solving the above problems.

  The shaft may have a hollow structure, and the shaft vibration suppression member may be disposed in an inner space of the shaft.

  Furthermore, the shaft attachment member may be composed of a plurality of divided members divided in the circumferential direction, and the shaft insertion hole of the shaft attachment member may be bottomed.

  Furthermore, between the outer peripheral surface of the shaft mounting member and the hosel hole of the head, and between the inner peripheral surface of the shaft insertion hole in the shaft mounting member and the shaft, the shaft mounting member is connected to the head and the shaft. An adhesive for fixing to the shaft may be filled.

  The present invention also includes a head having a tapered hosel hole having a large diameter from the top to the bottom of the head and having a mass of 180 g or less and 160 g or more, and a hard frequency having a natural frequency of 225 cpm or less. The head includes a substantially plate-shaped shaft support member that can be inserted into and fixed to the hosel hole from the bottom side of the head, and the shaft support member includes Is formed with a shaft insertion hole through which the shaft can be inserted and supported, the shaft being arranged coaxially with the shaft, and a fixing portion of a substantially cylindrical body that is closely fixed to the shaft; and A golf club having a shaft vibration suppressing member provided on a fixed portion and capable of vibrating independently of the shaft solves the same problem as described above.

  In addition, the gap for the hosel hole in the head may be filled with an adhesive for fixing the shaft to the head.

  The inner diameter of the upper opening of the hosel hole in the head may be the same as the outer diameter of the shaft inserted into the hosel hole.

  The golf club according to the present invention has an excellent effect that the flight distance can be increased and the directionality of the hit ball can be stabilized.

  Hereinafter, golf clubs according to first to third embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the golf club 10 according to the first embodiment of the present invention includes a head 12 having a hosel hole 12 </ b> A formed therethrough, and a shaft 14 fixed to the head 12. Configured.

  The head 12 has a mass of 180 g or less, and in this example, is designed to have a low center of gravity for the purpose of improving the flight distance. The hosel hole 12A of the head 12 has a tapered shape with a large diameter from the top to the bottom of the head 12, and the inner diameter of the upper opening is the same as the outer diameter of the shaft 14 inserted into the hosel hole 12A. It is said that. Further, the head 12 includes a shaft mounting member 16 having an outer shape substantially the same shape as the hosel hole 12A.

  As shown in the exploded perspective view of FIG. 4, the shaft mounting member 16 is constituted by two divided members of a first mounting unit 16A and a second mounting unit 16B in this example. The shaft attachment member 16 can be inserted into and fixed to the hosel hole 12A from the bottom side of the head 12. The shaft mounting member 16 has a shaft insertion hole 16C in which the central axis L1 is inclined at a predetermined angle α with respect to the sole surface 12B of the head 12 and the shaft 16 can be inserted from the upper side of the head 12. Is formed. The predetermined angle α means a so-called lie angle, and the lie angle can be appropriately set according to the user of the golf club, but is preferably set to an angle of about 52 ° to 61 °.

  The shaft 14 has a natural frequency of 225 cpm or less, and in this example, has a bottomed hollow structure. The hardness of the shaft of the golf club is generally called “flex”, and the flex is expressed by the symbols L, A, R, RS, S, SX, X, XX in order from the softest of the shaft. . The natural frequency ω of each flex is L (ω = 185 cpm), A (ω = 205 cpm), R (ω = 225 cpm), RS (ω = 235 cpm), S (ω = 245 cpm), SX (ω = 255 cpm). , X (ω = 265 cpm), XX (ω = 275 cpm), and the shaft in the present invention means that the natural frequency is 225 cpm or less, that is, the flex is L, A, R. The shaft 14 includes a shaft vibration suppressing member 20 in the inner space.

  As shown in FIG. 5, the shaft vibration suppression member 20 is disposed coaxially with the shaft 14 and is provided in the fixing portion 22, and a substantially cylindrical fixing portion 22 that is closely fixed to the shaft 14. And a vibrating portion 24 that can vibrate independently of the shaft 14.

  When the golf club with the shaft vibration suppressing member 20 mounted and fixed is hit, vibration is generated in the shaft 14 due to the weight of the head 12 and the deflection of the shaft 14 when the club is swung up and down before hitting. If the vibrating portion 24 in the contact state vibrates in response to the vibration of the shaft 14 and is in a non-resonant state, it acts to suppress shaft vibration.

  Therefore, the swing of the head 12 at the time of hitting is suppressed, and hitting efficiency is excellent. As a result, the flight distance is extended and the hitting directionality is improved. Furthermore, the vibration of the shaft 14 after hitting is also quickly damped by the vibration of the vibration part 24, and the response is good.

  When the shaft 14 is attached to the head 12 using the shaft attachment member 16, first, the adhesive 18 is applied to the outer peripheral surface of the shaft attachment member 16 and the inner peripheral surface of the shaft insertion hole 16C. Then, the shaft 12 is inserted into the shaft insertion hole 16C from the upper side of the head 12 and the shaft mounting member 16 is inserted and fixed into the hosel hole 12A from the bottom side of the head 12, thereby fixing the head 12 and the shaft 14 to the shaft. It is fixed via the mounting member 16.

  According to the golf club 10 according to the first embodiment, the head 12 having a tapered hosel hole 12A having a large diameter extending from the top to the bottom of the head 12 and having a mass of 180 g or less; A shaft 14 having a natural frequency of 225 cpm or less, and the head 12 is inserted into the hosel hole 12A from the bottom side of the head 12 and can be fixed to the hosel hole 12A. A shaft mounting member 16 having an outer shape of substantially the same shape is provided. The shaft mounting member 16 is inclined at a predetermined angle α with respect to the sole surface 12B of the head 12, and the shaft 14 is formed from the upper side of the head 12. A shaft insertion hole 16 </ b> C that can be inserted is formed, and the shaft 14 is disposed coaxially with the shaft 14 and is firmly attached to the shaft 14. A substantially cylindrical body fixing portion 22 and a shaft vibration suppressing member 22 provided on the fixing portion 22 and capable of vibrating independently of the shaft 14. The head speed can be improved by reducing the weight, and the bending of the shaft 12 can be effectively used by applying the soft shaft 12. Therefore, the flight distance can be increased as compared with the conventional golf club.

  Further, excessive vibration of the shaft 12 can be suppressed by the shaft vibration suppressing member 22, and the lie angle of the shaft 12 can be easily adjusted by the shaft mounting member 16. Can be stabilized. Moreover, since the shaft attachment member 16 has a tapered shape having an outer shape substantially the same shape as the hosel hole 12A, it is possible to reliably prevent the head 12 from coming off from the shaft 14.

  Furthermore, since the shaft 12 has a hollow structure and the shaft vibration suppression member 22 is disposed in the inner space of the shaft 12, the shaft vibration suppression member 22 does not interfere with the use of the golf club. In addition, the appearance of the golf club can be improved.

  Further, since the shaft mounting member 16 is constituted by two divided members of the first mounting unit 16A and the second mounting unit 16B, the shaft mounting member 16 can be easily inserted and fixed in the hosel hole 12A. Mounting and angle adjustment become easier.

  Furthermore, since the inner diameter of the upper opening of the hosel hole 12A is the same as the outer diameter of the shaft 14 inserted into the hosel hole 12A, the upper opening is a fulcrum when the shaft 14 is fixed to the hosel hole 12A. As a result, it is possible to easily adjust the angle of the shaft 14, and also in this respect, it is easy to mount the shaft 14 and adjust the angle.

  As shown in FIG. 6, the golf club 30 according to the second embodiment of the present invention has a shaft with a shaft insertion hole 32 </ b> A instead of the shaft mounting member 16 of the golf club 10 according to the first embodiment. The attachment member 32 is applied.

  According to the golf club 30 according to the second embodiment, the shaft insertion hole 32 </ b> A of the shaft attachment member 32 has a bottom, so that the shaft 14 is located with respect to the head 12 as compared with the golf club 10 according to the first embodiment. It can be attached more firmly.

  As shown in FIG. 7, the golf club 40 according to the third embodiment of the present invention is inserted and fixed near the bottom of the hosel hole 12 </ b> A instead of the shaft mounting member 16 of the golf club 10 according to the first embodiment. A substantially plate-like shaft support member 42 is applied. Further, as shown in FIG. 8, the shaft support member 42 is formed with a shaft insertion hole 42A through which the shaft 14 can be inserted and supported.

  When the shaft 14 is attached to the head 12 using the shaft support member 42, the shaft support member 42 is inserted into the hosel hole 12A and fixed to the notch 12A1 formed in the hosel hole 12A. The shaft is inserted into the shaft insertion hole 42 </ b> A of the shaft support member 42. Then, the head 12 and the shaft 14 are fixed by filling the gap in the hosel hole 12 with the adhesive 44.

  According to the golf club 40 according to the third embodiment, the head 12 having a tapered hosel hole 12A having a large diameter from the top to the bottom of the head 12 and having a mass of 180 g or less, A shaft 14 having a natural frequency of 225 cpm or less, and the head 12 is a substantially plate-shaped shaft that can be inserted into the hosel hole 12A from the bottom side of the head 12 and fixed. The shaft support member 42 includes a shaft insertion hole 42 </ b> A through which the shaft 14 can be inserted and supported. The shaft 14 is disposed coaxially with the shaft 14, and the shaft 14. A substantially cylindrical body fixing portion 22 which is closely fixed to the shaft, and a vibration portion 24 provided on the fixing portion 22 and capable of vibrating independently of the shaft 14. Due to the provision of a restraining member 20, similarly to the golf club 10 according to the first embodiment, on which it is possible to increase the distance, it is possible to achieve a directional stabilization of the ball.

  The golf club according to the present invention is not limited to the shape and structure of the golf clubs 10, 30, and 40 according to Examples 1 to 3 described above. For example, the shaft has a solid structure and the shaft vibration is suppressed. The member 20 may be disposed on the outer periphery of the shaft.

  Further, the shaft mounting member 16 is constituted by two divided members of the first mounting unit 16A and the second mounting unit 16B. However, the present invention is not limited to this. For example, the first mounting unit 16A and the first mounting unit 16B The two mounting units 16B may be integrated.

  Further, although the inner diameter of the upper opening of the hosel hole 12A is the same as the outer diameter of the shaft 14 inserted into the hosel hole 12A, the present invention is not limited to this, and the shaft 14 can be inserted into the hosel hole 12A. I just need it.

Schematic sectional view of a golf club according to Example 1 of the present invention Outline top view of the golf club Schematic bottom view of the golf club Schematic perspective view of shaft mounting member of the golf club Schematic sectional view showing the vicinity of the shaft vibration suppressing member of the golf club in an enlarged manner Schematic sectional view of a golf club according to a second embodiment of the present invention Schematic sectional view of a golf club according to Example 3 of the present invention Schematic perspective view of shaft support member of same golf club

Explanation of symbols

L1 ... center axis α ... angle 10, 30, 40 ... golf club 12 ... head 12A ... hosel hole 12A1 ... notch 12B ... sole surface 14 ... shaft 16, 32 ... shaft attachment member 16A ... first attachment unit 16B ... first 2 Mounting unit 16C, 32A ... Shaft insertion hole 18, 44 ... Adhesive 20 ... Shaft vibration suppressing member 22 ... Fixing part 24 ... Vibrating part 42 ... Shaft support member 42A ... Shaft insertion hole

Claims (8)

  A head formed with a tapered hosel hole having a large diameter from the top to the bottom of the head and having a mass of 180 g or less and 160 g or more, a shaft having a natural frequency of 225 cpm or less, The head includes a shaft mounting member having an outer shape substantially the same shape as the hosel hole, which can be inserted into and fixed to the hosel hole from the bottom side of the head. The member is formed with a shaft insertion hole that is inclined at a predetermined angle with respect to the sole surface of the head and into which the shaft can be inserted from the upper side of the head. And a fixed portion of a substantially cylindrical body that is coaxially disposed and fixedly attached to the shaft, and a vibration portion that is provided on the fixed portion and can vibrate independently of the shaft. Golf club, characterized in that it comprises a shaft vibration suppressing member made. In claim 1,
The golf club according to claim 1, wherein the shaft has a hollow structure, and the shaft vibration suppression member is disposed in an inner space of the shaft. In claim 1 or 2,
The golf club according to claim 1, wherein the shaft mounting member is composed of a plurality of divided members divided in the circumferential direction. In any one of Claims 1 thru | or 3,
The golf club according to claim 1, wherein a shaft insertion hole of the shaft mounting member is bottomed. In any one of Claims 1 thru | or 4,
The shaft mounting member is fixed to the head and the shaft between the outer peripheral surface of the shaft mounting member and the hosel hole of the head and between the inner peripheral surface of the shaft insertion hole of the shaft mounting member and the shaft. A golf club, which is filled with an adhesive for the purpose.   A head formed with a tapered hosel hole having a large diameter from the top to the bottom of the head and having a mass of 180 g or less and 160 g or more, a shaft having a natural frequency of 225 cpm or less, The head includes a substantially plate-like shaft support member that can be inserted into and fixed to the hosel hole from the bottom side of the head, and the shaft is inserted into the shaft support member. A shaft insertion hole that can be supported is formed, the shaft is disposed coaxially with the shaft, and is provided in the fixing portion, a fixing portion of a substantially cylindrical body that is closely fixed to the shaft, A golf club comprising: a shaft vibration suppressing member including a vibrating portion that can vibrate independently of the shaft. In claim 6,
The golf club according to claim 1, wherein a gap between hosel holes in the head is filled with an adhesive for fixing the shaft to the head. In any one of Claims 1 thru | or 7,
The golf club according to claim 1, wherein an inner diameter of an upper opening portion of the hosel hole in the head is the same as an outer diameter of a shaft inserted into the hosel hole.

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