JP3714520B2 - Golf club - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a golf club, and more particularly, to a golf club including a head formed by joining a plurality of metal shells and having a hollow portion therein.
[0002]
[Problems to be solved by the invention]
2. Description of the Related Art Conventionally, in a wood golf club or the like, a head having a hollow portion is formed by joining a plurality of metal shells. At the same time, the use of titanium or a titanium alloy that can ensure strength while being lightweight as a raw material has led to a breakthrough in the size of the head in recent years. The trend of increasing the size of the head continues, and from the original volume of about 240 to 250 cc, there are now heads with a volume exceeding 300 cc.
[0003]
Since a large head has a large face surface, that is, a ball striking surface itself, the range in which a ball hit on the face surface flies straight and well has an advantage that it is easy for beginners to handle. However, the increase in the size of the head has also resulted in the discomfort of the hitting sound. That is, when a ball is hit with a golf club, the head is distorted by the impact. Thereby, each metal shell which forms a hollow part vibrates, and a hitting sound is emitted. In the case of a large-sized head, the area of each metal shell is larger than that of a conventional smaller-sized head, and on the other hand, the thickness of the material is reduced. As a result, the hitting sound was high and too loud, resulting in discomfort to the golfer.
[0004]
In order to suppress the generation of such a sound at the time of hitting a ball, conventionally, means for injecting a light filler such as urethane foam into the hollow portion of the head has been employed. However, even foamed urethane, for example, becomes a considerable amount if it is filled in the hollow part, and this increases the weight of the head. Particularly in the case of a large-sized head, when urethane foam is filled in the hollow portion, the weight of the entire head becomes excessively large, resulting in a golf club that is heavy and difficult to swing.
[0005]
The present invention is intended to solve such problems, and in a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, while suppressing an increase in the weight of the head, The object is to obtain a comfortable hitting sound for a golfer.
[0006]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, and an inner wall of a side peripheral portion of the head is vertically The build-up hitting sound adjustment part is projected and formed by build-up welding at an intermediate height position in the direction, and the build-up hitting sound adjustment part is substantially horizontal, passing from the toe side to the heel side through the back. Is formed.
[0007]
This hitting sound adjustment unit suppresses the distortion of the metal shell when the ball is hit, and prevents the generation of unpleasant sounds. On the other hand, the increase in the weight of the head by the hitting sound adjustment unit is slight.
[0008]
According to a second aspect of the present invention, there is provided a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, wherein the bottom of the head is parallel or orthogonal to the face. The hard hitting sound adjusting section is formed by partially heat-treating a substantially square shape having the directionality to be cured .
[0009]
This hitting sound adjustment unit suppresses the distortion of the metal shell when the ball is hit, and prevents the generation of unpleasant sounds. On the other hand, there is almost no increase in the weight of the head by the hitting sound adjusting unit.
[0010]
A third aspect of the present invention, in order to achieve the above object, in a golf club with a head having a hollow portion therein is formed by joining a plurality of metal shells, the crown member of the head, to not parallel to the face A hard hitting sound adjustment unit is formed by partially applying a heat treatment to a substantially square shape having orthogonal directions and hardening .
[0011]
This hitting sound adjustment unit suppresses the distortion of the metal shell when the ball is hit, and prevents the generation of unpleasant sounds. On the other hand, there is almost no increase in the weight of the head by the hitting sound adjusting unit.
[0012]
According to a fourth aspect of the present invention, in a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the bottom of the head and the crown member are parallel to or perpendicular to the face. A hard hitting sound adjusting portion is formed by partially applying a heat treatment to a substantially square shape having a shape.
[0013]
This hitting sound adjustment unit suppresses the distortion of the metal shell when the ball is hit, and prevents the generation of unpleasant sounds. On the other hand, there is almost no increase in the weight of the head by the hitting sound adjusting unit.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a golf club of the present invention will be described with reference to the drawings. 1 to 3 show a first embodiment. The golf club of the first embodiment is a wood club, and is a so-called metal wood in which the head 1 is made of metal and is hollow. The head 1 has a face 2 whose front surface forms a ball striking surface, a back 3 on the rear side, a sole 4 on the lower side, a crown 5 on the upper side, a toe 6 on one side in the left-right direction, and a heel 7 on the other side. A neck 8 is formed on the upper side of the heel 7, and a hosel 9 projects upward from the neck 8. The hosel 9 forms a connection portion to which the shaft 10 is connected. The face 2 is formed with a plurality of concave groove-like score lines 11.
[0015]
The head 1 is formed by joining a plurality of metal shells made of titanium, a titanium alloy, or the like, and the inside is a hollow portion 15. That is, the outer shell portion of the head 1 includes a face member 16, a body member 17, and a crown member 18 that are plate-like metal shells. The face member 16 forms the face 2, the crown member 18 forms the crown 5, and the body member 17 forms the sole 4 that is the side peripheral portion and the bottom portion including the other back 3. To do. The face member 16, the body member 17, and the crown member 18 are joined together by means such as welding. The neck 8 and the hosel 9 are formed by a metal tubular hosel member 19. The hosel member 19 has a lower end extending to the inner wall of the bottom surface of the body member 17, and a distal end is welded to the inner wall. 20 is a joint between the body member 17 and the face member 16, 21 is a joint between the body member 17 and the crown member 18, and 22 is a joint between the body member 17 and the lower end of the hosel member 19. The joint 20 is located at the front edge of the body member 17, and the joint 21 is located at the upper edge of the body member 17. The volume of the head 1 having the inside formed in the hollow portion 15 is 270 cc or more. The division of the head 1 is not limited to the above-described three divisions, and may be divided into two on the face 2 side and the back 3 side, or may be divided into four or more divisions.
[0016]
In the head 1 of the first embodiment, the built-up hitting sound adjusting portion 23 is formed to project at an intermediate height position in the vertical direction on the inner wall of the side peripheral portion of the body member 17. This build-up hitting sound adjustment portion 23 is formed by build-up welding, is substantially horizontal, reaches the heel 7 side through the back 3 from the toe 6 side, and is almost in the toe-heel direction of the body member 17. Throughout.
[0017]
Next, the operation of the above configuration will be described. When the ball is hit by the head 1, the body member 17 has a build-up hitting sound adjusting portion 23, so that the thickness of the body member 17 is reduced in order to reduce the weight accompanying the increase in the size of the head 1. Even so, the distortion of the body member 17 is suppressed, and consequently the distortion of the crown member 18 is also suppressed. The weld overlay formed at the joints 20, 21 of the body member 17, the face member 16, and the crown member 18 also has an effect of suppressing distortion, but the overlay hitting ball is also provided at a position other than the joints 20, 21. Since the sound adjustment unit 23 is formed, distortion can be further suppressed. Moreover, since the built-up hitting ball sound adjusting unit 23 is horizontal and extends substantially over the entire toe-heel direction of the body member 17, distortion can be more reliably suppressed. Thereby, the vibration of the metal shells such as the body member 17 and the crown member 18 is also reduced, the hitting sound is reduced, and the generation of an unpleasant and high hitting sound is prevented. Therefore, a hitting sound comfortable for the golfer can be obtained. Further, as the head 1 becomes larger as described above, the uncomfortable sound of the hitting ball becomes a problem. Therefore, in the head having a large volume of 270 cc or more as in the present embodiment, the unpleasant sound by the built-up hitting ball sound adjusting unit 23. Prevention of the occurrence of is particularly effective.
[0018]
Further, since the build-up hitting sound adjustment part 23 exists only locally, the increase in the weight of the head 1 by the build-up hitting sound adjustment part 23 is slight, and the entire hollow part 15 is filled with urethane resin. Compared to such a case, an increase in the weight of the entire head 1 can be suppressed. Therefore, it is possible to make the golf club easy to swing.
[0019]
FIG. 4 shows a second embodiment of the golf club of the present invention. The head 1 of this second embodiment has the same basic configuration as the head 1 of the first embodiment. Accordingly, corresponding parts are denoted by the same reference numerals, and description thereof is omitted. The head 1 of the second embodiment is similar to the head 1 of the first embodiment, in which the built-up hitting ball sound adjusting portion 23 is formed on the body member 17, and the function and effect thereof are also the same. Furthermore, in the head 1 of the second embodiment, a bulging portion 24 extending from the end edge on the face 2 side to the end edge on the back 3 side is formed on the inner wall of the bottom surface portion of the body member 17.
[0020]
This bulging portion 24 also has an effect of suppressing distortion of the body member 17 when the ball is hit. Therefore, generation of unpleasant hitting sound can be prevented more reliably.
[0021]
Next, a third embodiment of the golf club of the present invention will be described with reference to FIGS. Since the basic structure of the head 1 including the divided structure by the metal shell is the same as that of the first embodiment, the corresponding parts are denoted by the same reference numerals and the description thereof is omitted. In the head 1 according to the third embodiment, the inner wall of the bottom portion of the body member 17 and the crown member 18 are partially heat-treated to be hardened, thereby causing the hardened hitting sound adjusting portions 25 and 26 (illustrated by cross-hatching in the drawing). ) Are formed. These hardened ball hitting sound adjusting portions 25 and 26 are substantially in the shape of a well having a direction parallel to or orthogonal to the face 2. For such partial heat treatment, for example, a laser beam or the like can be used.
[0022]
When the ball is hit by the head 1, the body member 17 and the crown member 18 have the hardened ball hitting sound adjusting portions 25 and 26. Even if the thickness of the member 18 is reduced, the distortion of these members 17 and 18 can be suppressed. Thereby, the vibration of the metal shells such as the body member 17 and the crown member 18 is also reduced, the hitting sound is reduced, and the generation of an unpleasant and high hitting sound is prevented. Therefore, a hitting sound comfortable for the golfer can be obtained. Furthermore, as the head 1 becomes larger as described above, the uncomfortable impact sound becomes a problem. Therefore, in the large head having a volume of 270 cc or more as in this embodiment, the hardened impact sound adjustment parts 25 and 26 are uncomfortable. The prevention of sound generation is particularly effective.
[0023]
Further, since the hardened hitting sound adjusting portions 25 and 26 are obtained by hardening a part of the body member 17 and the crown member 18 themselves, the hard hitting sound adjusting portions 25 and 26 hardly have the weight of the head 1 and the hollow portion 15. Compared to a case where the entire body is filled with urethane resin, an increase in the weight of the entire head 1 can be suppressed. Therefore, it is possible to make the golf club easy to swing.
[0024]
Next, a reference example of the golf club of the present invention will be described with reference to FIG. Since the basic configuration of the head 1 including the divided configuration by the metal shell is the same as that of the reference example, the corresponding parts are denoted by the same reference numerals and the description thereof is omitted. In the head 1 of the present reference example, as the hitting sound adjusting portion made of a flat metal member that connects the inner wall of the back 3 side that is the side periphery of the inner wall of the bottom surface portion of the body member 17 and the inner wall of the face member 16. The hitting sound adjusting member 28 is provided. The hitting sound adjusting member 28 is joined to the bottom surface of the body member 17 by welding at both ends, for example. Reference numeral 29 denotes a joint portion between the hitting sound adjusting member 28 and the body member 17.
[0025]
When the ball is hit by the head 1, since the hitting sound adjusting member 28 is provided on the bottom surface of the body member 17, the material thickness of the body member 17 is reduced in order to reduce the weight associated with the increase in the size of the head 1. Even if it is, the distortion of the body member 17 is suppressed, and the distortion of the crown member 18 is also suppressed. Moreover, since the hitting sound adjusting member 28 is on the bottom surface of the body member 17 and connects the inner wall on the back 3 side and the inner wall of the face member 16, it resists the force applied from the hit ball, and particularly the head 1 It acts to suppress distortion in the front-rear direction. Therefore, distortion can be suppressed more effectively. Thereby, the vibration of the metal shells such as the body member 17 and the crown member 18 is also reduced, the hitting sound is reduced, and the generation of an unpleasant and high hitting sound is prevented. Therefore, a hitting sound comfortable for the golfer can be obtained. Further, as the head 1 becomes larger as described above, the uncomfortable sound of the hitting ball becomes a problem. Therefore, in the large head having a volume of 270 cc or more as in this embodiment, the unpleasant sound generated by the hitting sound adjusting member 28 is generated. Prevention is particularly effective.
[0026]
Further, since the hitting sound adjusting member 28 exists only locally, the increase in the weight of the head 1 by the hitting sound adjusting member 28 is slight, and when the entire hollow portion 15 is filled with urethane resin. In comparison, an increase in the weight of the entire head 1 can be suppressed. Therefore, it is possible to make the golf club easy to swing.
[0027]
In addition, this invention is not limited to the said Example, A various deformation | transformation implementation is possible. For example, the build-up hitting ball sound adjusting portion 23 of the first embodiment and the second embodiment is formed horizontally over almost the whole of the body member 17 in the toe-heel direction. The sound adjusting unit may be formed only partially in the toe-heel direction, and the directionality and shape are not limited to those of the first and second embodiments.
[0028]
Further, in the third embodiment, the hardened hitting sound adjusting parts 25 and 26 are formed in a substantially square shape on the sole 4 part and the crown 5 part. The shape of the part is not limited to that.
[0029]
In each of the above embodiments, the built-in hitting ball sound adjusting unit 23 and the hardened hitting ball sound adjusting units 25 and 26 are provided independently, but these may be combined as appropriate. For example, it is possible to combine all of the built-up hitting ball sound adjusting unit 23 of the first embodiment and the hardened hitting ball sound adjusting units 25 and 26 of the second embodiment. If the build-up hitting sound adjustment unit 23 and the hardened hitting sound adjustment units 25 and 26 are appropriately combined in this way, the effect of preventing unpleasant hitting sound can be further increased.
[0030]
Further, in the above-described embodiment, the description has been given by taking the wood club as an example, but the present invention can also be applied to an iron club. In short, the present invention is applicable to an arbitrary head having a hollow portion formed by joining a plurality of metal shells.
[0031]
【The invention's effect】
According to the first aspect of the present invention, in the golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, an intermediate height in the vertical direction is formed on the inner wall of the side peripheral portion of the head. The build-up hitting ball sound adjustment part is projected and formed at the position of the build-up welding, and the build-up hitting ball sound adjustment part is formed so as to be almost horizontal and from the toe side through the back to the heel side . A hitting sound that is comfortable for the golfer can be obtained while suppressing an increase in the weight of the head.
[0032]
According to the invention of claim 2, in the golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the bottom of the head has a direction parallel to or perpendicular to the face. Since the hard hitting sound adjusting portion is formed by partially heat-treating the well shape and cured, a hitting sound comfortable for the golfer can be obtained while suppressing an increase in the weight of the head.
[0033]
According to the invention of claim 3, in the golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the crown member of the head has a direction parallel to or perpendicular to the face. Since the hard hitting sound adjusting section is formed by partially applying a heat treatment to the substantially square shape, a hitting sound comfortable for the golfer can be obtained while suppressing an increase in the weight of the head.
[0034]
According to the fourth aspect of the present invention, in a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the bottom portion of the head and the crown member are parallel to or orthogonal to the face. Since the hard hitting sound adjusting section is formed by partially applying heat treatment to the substantially square shape having the shape, a hitting sound comfortable for the golfer can be obtained while suppressing an increase in the weight of the head.
[Brief description of the drawings]
FIG. 1 is a partially exploded perspective view showing a first embodiment of a golf club of the present invention.
FIG. 2 is a cross-sectional view of the above.
FIG. 3 is a perspective view of the same.
FIG. 4 is a partially exploded perspective view showing a second embodiment of the golf club of the present invention.
FIG. 5 is a plan view showing a third embodiment of the golf club of the present invention.
FIG. 6 is a bottom view of the above.
FIG. 7 is a partially exploded perspective view showing a reference example of the golf club of the present invention.
[Explanation of symbols]
1 head 2 face
6 Tow
7 Heel
15 Hollow part
16 Face member (metal shell)
17 Body member (metal shell)
18 Crown member (metal shell)
23 Overlay hitting sound adjustment part (hitting ball sound adjustment part)
25 Hardened hitting sound adjustment part (hitting ball sound adjustment part)
26 Hardened hitting sound adjustment section (hitting ball sound adjustment section)

Claims (4)

In a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, a built-in hitting ball sound adjusting portion at an intermediate height position in the vertical direction on an inner wall of a side peripheral portion of the head Is formed so as to protrude by overlay welding, and the build-up hitting sound adjustment portion is substantially horizontal and is formed so as to reach the heel side from the toe side through the back . In a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the bottom of the head is partially heat-treated into a substantially square shape having a direction parallel to or orthogonal to the face. A golf club characterized in that a hardened hitting ball sound adjusting unit is formed by applying and curing . In a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the crown member of the head is partially formed in a substantially square shape having a direction parallel to or orthogonal to the face. A golf club characterized by forming a hardened ball hitting sound adjusting portion cured by heat treatment . In a golf club having a head formed by joining a plurality of metal shells and having a hollow portion therein, the bottom of the head and the crown member are formed in a substantially square shape having a direction parallel to or orthogonal to the face. A golf club characterized in that a hardened ball hitting sound adjusting portion cured by heat treatment is formed.

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