JP2005103162A - Structure of golf club head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the inertia moment of a golf club by reducing weight which a juncture part accounts for, through the use of a hole arranged in the juncture part and moving the center of gravity of a head to a toe part. <P>SOLUTION: The golf club head includes: a head body; a face board; the juncture part; and a neck, which are formed of metal. The face board is used for shooting a ball. The juncture part is formed between the face board and the neck. The neck comprises a connection hole for connection to a shaft. The juncture part comprises the hole. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structure of a golf club head, and in particular, a golf club head capable of adjusting the center of gravity, increasing the moment of inertia, improving the performance of a hit ball, and further absorbing vibration by reducing the weight of a connecting portion. This relates to the structure.

  As shown in FIG. 11, a conventional golf club head has a head 1 made of a metal material. The head 1 includes a head main body 10. The head main body 10 includes a face plate 11 and a connecting portion. 12 and a neck 13 are provided, the face plate 11 is used for hitting a ball, the connecting portion 12 can connect the face plate 11 and the neck 13, and the neck 12 is connected to a shaft (not shown). Some are intended to be used.

Further, as shown in FIG. 12, the conventional golf club head structure has a notch 120 formed below the connecting portion 12 (heel) between the neck 13 and the head body 10. The side weight can be relatively reduced. The center of gravity 14 of the head 1 is formed to move to the toe portion (toe) of the head 1 (that is, to move outward with respect to the connecting portion 12) and to be positioned in the hitting zone of the face plate 11. As a result, the moment of inertia of the head 1 can be relatively increased, so that there is one that can increase the performance of the hit ball (the hit distance of the hit ball) (see, for example, Patent Document 1).
US Patent No. 4,995,609

  In the structure of the conventional golf club head as described above, the connecting portion 12 and the neck 13 occupy too much weight, so that the center of gravity 14 of the head 1 is too close to the connecting portion 12, and thus the main hit ball of the face plate 11. It leaves the zone. As a result, the moment of inertia of the head 1 is reduced, and further, the efficiency of the transfer of the hitting stress from the head 1 to the sphere is reduced, which has a problem that the hitting performance of the head 1 is greatly affected.

  Further, in the structure of the conventional golf club head as described above, the concave portion 120 is provided in the head 1 so that the center of gravity 14 can be useful for the outward movement. The strength of the structure tends to be low. Further, since the recessed portion 120 is formed below the connecting portion 12, the weight of the lower half of the head 1 is reduced, so that the center of gravity 14 of the head 1 moves outward and simultaneously moves upward. Therefore, the center of gravity 14 is higher than the main hitting zone of the face plate 11. As a result, it is not possible to substantially improve the hitting ball performance and the moment of inertia by installing the recessed portion 120 in the head 1, but the head 1 is torn or curved and deforms on the contrary. There was a problem. Thus, the structure of the conventional golf club head as described above must be further improved.

  The present invention has been invented in view of such problems. The object of the present invention is to form a hole in the connecting portion of the head, and the upper half of the connecting portion is occupied by the hole of the connecting portion. Because the weight can be reduced uniformly, by moving the center of gravity of the head to the toe part, the moment of inertia is increased, and at the same time, the connecting part and the hole can be covered with a coating layer made of a light material. Since the strength of the structure can be strengthened and the vibration of the hit ball can be absorbed, the moment of inertia of the head, the performance of the hit ball and the absorbability of the vibration can be further increased without affecting the strength of the structure of the head. An object of the present invention is to provide a golf club head structure that can be used.

  The first object of the present invention is to form a hole in the connecting part of the head, reduce the weight occupied by the connecting part by the hole, and further move the center of gravity of the head to the toe part, so that the moment of inertia of the head and the hit ball It is an object of the present invention to provide a golf club head structure capable of enhancing performance.

  The second object of the present invention is to form a hole in the connecting portion of the head, and the connecting portion and the hole can be coated with a coating layer made of a light material, so that the vibration absorption can be enhanced and the strength of the structure can be improved. An object of the present invention is to provide a golf club head structure capable of increasing the speed.

  A third object of the present invention is to form a small-diameter portion in the connecting portion of the head and adjust the length of the small-diameter portion extending toward the neck according to the demand for the center of gravity. An object of the present invention is to provide a golf club head structure capable of reducing the weight of the portion and further moving the center of gravity of the head downward, thereby increasing the degree of freedom in adjusting the center of gravity.

  The fourth object of the present invention is to adjust the weight occupied by the upper half of the head by forming a hole in the connecting portion of the head and adjusting the hole standard, and further move the center of gravity of the head downward. Therefore, an object of the present invention is to provide a golf club head structure capable of enhancing the moment of inertia of the head and the performance of the hit ball.

In order to achieve the above object, the structure of the golf club head according to the present invention is as follows. That is,
Consists of a head body, a neck and a connecting part. A face plate coupling portion is provided on the front surface of the head body. The neck is provided on one side of the head body and can be coupled to the shaft by the neck. The connecting part is formed between the face plate coupling part and the neck, the hole is provided in the connecting part, the weight occupied by the connecting part by the hole can be reduced, and the center of gravity of the head is moved to the toe part. The moment of inertia of the club can be increased.

  In the structure of the golf club head according to the present invention, the hole of the connecting portion may be a through hole. The connecting hole may be a blind hole, and the opening of the blind hole may be provided in front of the head. The connecting hole may be a blind hole, and the opening of the blind hole may be provided on the back surface of the head. In addition, the connecting hole is formed in a shape that gradually shrinks so that the top is wide and the bottom is narrow, so that the weight occupied by the upper half of the head is relatively reduced and the center of gravity of the head is moved downward. You can also. In addition, the hole is filled with other light material, so that the strength of the structure of the connecting portion can be strengthened, and further, vibration at the time of hitting can be absorbed. In addition, a small diameter part can be formed in the connecting part.

  Furthermore, the structure of the golf club head according to the present invention further includes a coating layer, the coating layer is made of a light material, the coating layer is coated on the small diameter portion of the connecting portion, and further filled into the holes. Further, the strength of the structure of the connecting portion can be strengthened, and vibration at the time of hitting can be absorbed. The light material may be selected from carbon, resin, rubber, polymer compound material, titanium alloy, aluminum alloy, and light alloy. Further, the coating layer can be coated on the small diameter portion by a hot press or injection molding method. The small diameter part of the connecting part is formed so as to extend toward the neck of the head. By enlarging the small diameter part, the weight occupied by the upper half of the head is reduced, and the center of gravity of the head is relatively lowered. It can also be moved. In addition, an annular flange is formed in the small diameter portion at the upper end of the neck in the radial direction, and another coupling hole is provided in the neck. The coupling between the coupling hole and the shaft is stabilized by the annular flange. It can also increase sex. In addition, a plurality of other protruding portions are provided on the surface of the small-diameter portion of the neck so that the stability of the coupling in which the small-diameter portion covers the coating layer can be increased by the protruding portions. In addition, a plurality of other recessed portions are provided on the surface of the small-diameter portion of the neck so that the stability of the coupling in which the small-diameter portion covers the coating layer can be increased by the recessed portions. In addition, the connecting portion and the neck can be formed on one side of the head body by a method such as precision casting, casting, machining, pressure casting, forging, injection molding, and multistage joining. Further, the face plate coupling portion can be coupled with the face plate, and a ball can be hit with the face plate.

  According to the structure of the golf club head of the present invention, a hole is formed in the connecting portion of the head, the weight occupied by the connecting portion is reduced lightly, and the center of gravity of the head is moved to the toe portion. And there is an advantage that the performance of the hit ball can be improved.

  According to the structure of the golf club head of the present invention, a hole is formed in the connecting portion of the head, and the connecting portion and the hole can be coated with a coating layer made of a light material, thereby improving vibration absorption. There is an advantage that the strength of the structure can be increased.

  According to the structure of the golf club head of the present invention, the small diameter portion is formed in the connecting portion of the head, and the length of the small diameter portion can be adjusted toward the neck according to the demand for the center of gravity. Since the weight of the upper half of the head can be reduced and the center of gravity of the head can be moved downward, there is an advantage that the degree of freedom in adjusting the center of gravity can be increased.

  According to the structure of the golf club head of the present invention, the weight occupied by the upper half of the head is adjusted by forming a hole in the connecting portion of the head and adjusting the hole standard, and the center of gravity of the head is lowered. Since it can be moved, there is an advantage that the moment of inertia of the head and the performance of the hit ball can be improved.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 is an exploded perspective view of the golf club head structure according to the first embodiment of the present invention, FIG. 2 is a front view of the assembled golf club head structure according to the first embodiment of the present invention, and FIG. FIG. 4 is a front view showing a state in which the structure of the golf club head according to the second embodiment of the invention does not cover the covering layer, and FIG. 4 is a front view showing an assembled state according to the structure of the golf club head according to the second embodiment of the present invention. FIG. 5 is a front view showing a state in which the structure of the golf club head according to the third embodiment of the present invention does not cover the covering layer, and FIG. 6 is a view showing an assembled state according to the structure of the golf club head according to the third embodiment of the present invention. FIG. 7 is a front view of the assembled state of the golf club head structure according to the fourth embodiment of the present invention, and FIG. 8 is the assembled state of the golf club head structure according to the fifth embodiment of the present invention. Front view, figure Is a front view in an assembled state according to the structure of the golf club head according to a sixth embodiment of the present invention, FIG 10 is a front view of the assembled state due to the structure of the golf club head according to a seventh embodiment of the present invention.

  1 and 2, the head 1 of the golf club head structure according to the first embodiment of the present invention is made of a metal or alloy material. The head 1 includes a head body 10, a face plate 11, a connecting portion 12, and a neck. 13 and hole 121 are included. A face plate coupling portion 101 is formed on the front surface of the head body 10, and the face plate 11 is formed by the face plate coupling portion 101 by, for example, fitting, pressing, brazing, welding, screwing, integral molding, or the like. Can be combined. The face plate 11 can be used for hitting a ball. The connecting portion 12 is connected between the face plate 11 and the neck 13. The hole 121 is provided in the connecting portion 12, and the hole 121 can be selected from, for example, a through hole or a blind hole. For example, when formed in a blind hole, the opening of the hole 121 can be provided on the front or back of the head 1. Since the weight occupied by the upper and lower half portions of the connecting portion 12 can be uniformly reduced by the holes 121, the center of gravity 14 of the head 1 moves to the toe portion of the head 1 with respect to the neck 13 (that is, with respect to the connecting portion 12). And the moment of inertia of the head 1 can be relatively increased, so that the performance (hit distance) of the head 1 can be effectively increased. Further, a coupling hole 131 is formed in the neck 13 and can be coupled to a shaft (not shown) through the coupling hole 131. Further, the connecting portion 12 and the neck 13 are formed on one side of the head body 10 so as to be integrally formed by a method such as precision casting, casting, machining, pressure casting, forging, injection molding, etc. according to the demand in use. Or can be coupled to the head body 10 by a staged joining method.

  3 and 4, the structure of the golf club head according to the second embodiment of the present invention is posted. Compared to the first embodiment, the connecting portion 12 of the second embodiment further includes a small-diameter portion 122, and the small-diameter portion 122 is used to cover the coating layer 20. The covering layer 20 is composed of a suitable light material, and the light material can preferably be selected from carbon, resin, rubber, polymer compound material or light alloy (for example, titanium alloy, aluminum alloy), and hot press or injection. The small-diameter portion 122 can be covered by a method such as molding and further filled in the hole 121. The covering layer 20 can further reduce the weight of the connecting portion 12 in a state where the strength of the structure of the connecting portion 12 is not affected. At the same time, the covering layer 20 relatively increases the resistance value of the connecting portion 12 of the head 1. be able to. As a result, vibration generated at the time of hitting can be absorbed by the coating layer 20 without affecting the hitting stress of the face plate 11, so that stability at the time of hitting can be improved and grip comfort is also improved.

  5 and 6, the structure of the golf club head according to the third embodiment of the present invention is posted. Compared to the second embodiment, the small-diameter portion 122 of the connecting portion 12 of the third embodiment is further formed to extend toward the neck 13, thereby further expanding the area of the small-diameter portion 122. Accordingly, not only the center of gravity 14 of the head 1 is moved to the toe portion, but also the weight occupied by the upper half of the head 1 can be reduced, so that the center of gravity 14 can be moved further downward. Thus, the moment of inertia of the shaft can be further extended. Further, as a general rule, the length of the small diameter portion 122 can be adjusted according to the demand for use of the product, and the small diameter portion 122 of the connecting portion 12 can be extended to the end of the neck 13 as a maximum. it can. Thereby, in this invention, the freedom degree of adjustment of the gravity center of the head 1 at the time of manufacture can be increased. Furthermore, the coating layer 20 is also covered with the small-diameter portion 122 that is similarly stretched.

  Referring to FIG. 7, the structure of a golf club head according to a fourth embodiment of the present invention is posted. Compared to the third embodiment, when the small-diameter portion 122 of the connecting portion 12 of the fourth embodiment is extended to the end of the neck 13, a plurality of protrusions 132 protrude from the surface of the small-diameter portion 122 of the neck 13. Is provided. The cross section of the protrusion 132 may be formed in various geometric shapes such as an annular shape, a circular shape, and a long shape. Thereby, when covering is performed and the covering layer 20 is formed, the stability and reliability of the coupling between the small diameter portion 122 and the covering layer 20 can be increased by the protruding portion 132.

  Referring to FIG. 8, the structure of the golf club head according to the fifth embodiment of the present invention is posted. Compared with the third embodiment, when the small diameter portion 122 of the connecting portion 12 of the fifth embodiment is extended to the end of the neck 13, a plurality of recessed portions 133 are further recessed on the surface of the small diameter portion 122 of the neck 13. It is provided as follows. The cross section of the recessed portion 133 can be formed in various geometric shapes such as an annular shape, a circular shape, and a long shape. Thereby, when the coating layer 20 is formed by coating, the stability and reliability of the coupling between the small diameter portion 122 and the coating layer 20 can be increased by the recessed portion 133.

  Referring to FIG. 9, the structure of the golf club head according to the sixth embodiment of the present invention is posted. Compared with the third embodiment, an annular flange 134 is formed at the upper end of the neck 13 of the sixth embodiment by extending outward in the radial direction. Thereby, when connecting with the shaft, the stability and reliability of the connection between the connecting hole 131 and the shaft can be increased by the annular flange 134.

  Referring to FIG. 10, the structure of the golf club head according to the seventh embodiment of the present invention is posted. Compared to the first, second, third, fourth, fifth, and sixth embodiments, the hole 121 of the connecting portion 12 of the seventh embodiment can be formed in a contracted shape such that the top is wide and the bottom is narrow. The center of gravity 14 of the head body 10 can be moved to the toe portion by the hole 121, the weight of the upper half of the head 1 can be relatively reduced, and the center of gravity 14 of the head 1 can be moved downward. Therefore, the moment of inertia of the head 1 can be increased, and the performance (hit distance) of the hit ball can be further increased.

  As described above, according to the structure of the conventional golf club head, there has been a problem that the position of the center of gravity of the head cannot be effectively adjusted outside without affecting the strength of the structure of the head 1. According to the structure of the golf club head of the present invention, a hole and a small diameter portion are formed in the connecting portion, and a coating layer is coated on the small diameter portion, so that the moment of inertia of the head, the performance of the hit ball, the vibration absorption, The degree of freedom in adjusting the strength of the structure and the center of gravity can be further increased.

  The present invention may be implemented in other ways without departing from the spirit and essential characteristics thereof. Accordingly, the preferred embodiments described herein are illustrative and not limiting.

It is a disassembled perspective view by the structure of the golf club head of Example 1 of this invention. It is a front view of the assembled state by the structure of the golf club head of Example 1 of this invention. It is a front view of the state which the structure of the golf club head of Example 2 of this invention has not coat | covered the coating layer. It is a front view of the assembled state by the structure of the golf club head of Example 2 of this invention. It is a front view of the state which the structure of the golf club head of Example 3 of this invention has not coat | covered the coating layer. It is a front view of the assembled state by the structure of the golf club head of Example 3 of this invention. It is a front view of the assembled state by the structure of the golf club head of Example 4 of this invention. It is a front view of the assembled state by the structure of the golf club head of Example 5 of this invention. It is a front view of the assembled state by the structure of the golf club head of Example 6 of this invention. It is a front view of the assembled state by the structure of the golf club head of Example 7 of this invention. It is a front view by the structure of the conventional golf club head. It is a front view by the structure of another conventional golf club head.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Head 10 Head main body 11 Face board 101 Face board coupling | bond part 12 Connection part 120 Recessed part 121 Hole 122 Small diameter part 13 Neck 131 Joint hole 132 Protrusion part 133 Recessed part 134 Annular flange 14 Center of gravity 20 Covering layer

Claims (16)

  A golf club head structure including a head body (10), a neck (13), and a connecting portion (12), and a face plate coupling portion (101) is provided on the front surface of the head body (10). (13) is provided on one side of the head body (10) and can be coupled to the shaft by the neck (13), and the connecting portion (12) is formed between the face plate coupling portion (101) and the neck (13). The connecting part (12) is provided with a hole (121), the weight occupied by the connecting part (12) can be reduced by the hole (121), and the center of gravity (14) of the head (1) is moved to the toe part. The structure of the golf club head characterized in that the moment of inertia of the golf club can be increased by causing   2. The golf club head structure according to claim 1, wherein the hole (121) of the connecting portion (12) is a through hole.   2. The golf club head structure according to claim 1, wherein the hole (121) of the connecting portion (12) is a blind hole, and the opening of the blind hole is provided in front of the head (1).   2. The golf club head structure according to claim 1, wherein the hole (121) of the connecting portion (12) is a blind hole, and the opening of the blind hole is provided on the back surface of the head (1).   The hole (121) of the connecting portion (12) is formed in a gradually shrinking shape such that the top is wide and the bottom is narrow, so that the weight occupied by the upper half of the head (1) is relatively reduced, and further the head 2. A golf club head structure according to claim 1, wherein the center of gravity (14) of (1) can be moved downward.   The hole (121) is filled with a light material in addition, so that the strength of the structure of the connecting portion (12) can be strengthened, and vibration during hitting can be absorbed. Golf club head structure.   The golf club head structure according to claim 1, wherein the connecting portion is further formed with a small diameter portion.   In addition, a coating layer (20) is included, the coating layer (20) is made of a light material, the coating layer (20) is coated on the small diameter portion (122) of the connecting portion (12), and further the hole (121). The golf club head structure according to claim 7, wherein the strength of the structure of the connecting portion (12) can be strengthened by being filled, and vibration at the time of hitting can be absorbed.   9. The golf club head structure according to claim 6, wherein the light material can be selected from carbon, resin, rubber, polymer compound material, titanium alloy, aluminum alloy, and light alloy.   The golf club head structure according to claim 8, wherein the coating layer (20) is coated on the small diameter portion (122) by hot pressing or injection molding.   The small diameter portion (122) of the connecting portion (12) is formed so as to extend toward the neck (13) of the head (1), and by expanding the small diameter portion (122), the upper half portion of the head (1). 8. The golf club head structure according to claim 7, wherein the weight occupied by the head (1) can be reduced and the center of gravity (14) of the head (1) can be moved relatively downward.   The small diameter portion (122) at the upper end of the neck (13) is extended radially outward to form an annular flange (134), and the neck (13) is further provided with a coupling hole (131). 12. The golf club head structure according to claim 11, wherein stability of the coupling between the coupling hole (131) and the shaft can be increased by the annular flange (134).   On the surface of the small diameter portion (122) of the neck (13), a plurality of other protrusions (132) are provided so as to protrude, and the small diameter portion (122) covers the coating layer (20) by the protrusion (132). 12. The structure of a golf club head according to claim 11, wherein the stability of the coupling is increased.   The surface of the small diameter part (122) of the neck (13) is provided with a plurality of other recessed parts (133) so as to be recessed, and the recessed part (133) causes the small diameter part (122) to be covered with the coating layer (20). The golf club head structure according to claim 11, wherein the stability of the bond covering the golf club can be increased.   The connecting portion (12) and the neck (13) are formed on one side of the head body (10) by a method such as precision casting, casting, machining, pressure casting, forging, injection molding, and step joining. The golf club head structure according to claim 1.   The golf club head structure according to claim 1, wherein the face plate coupling portion (101) can be coupled to the face plate (11) and can be hit by the face plate (11).

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