JP3592005B2 - Metal hollow golf club head - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention relates to a metal hollow golf club heads, such as wood golf club head or an iron golf club head, the further details fixed support of the club head body and the shaft, provided on the hosel side within the club head body further weight by the body to allow attachable removably to the proximal end of shaft tip supporting member, in which about the metal hollow golf club head can be arbitrarily adjusted the position of the center of gravity of the club head body.
[0002]
[Prior art]
Conventionally, in a hollow golf club head made of metal such as a wood golf club head (or iron golf club head), the hosel portion 2 of the head body 1 is integrated with the crown portion 3 of the head body 1 as shown in FIG. The hosel portion 2 is formed so as to protrude outward from the crown portion 3 or protrude into the head main body 1 so that the tip end side of the shaft 4 is supported and fixed.
[0003]
[Problems to be solved by the invention]
That is, the conventional hosel part 2 is a so-called complete rigid body that is connected to the crown part 3 of the head body 1 and is a so-called completely rigid body, so that it can be used during golf club swinging or ball impact (at the time of hitting a ball). The head body 1 has a structure that hardly deforms.
[0004]
Therefore, the dynamic behavior of the golf club, such as real loft and face angle, is not related to the head body itself, which is a completely rigid body, but the characteristics of the shaft (for example, shaft deflection, twisting, elastic force, etc.) The actual situation is that the directionality of the ball hit with a large hit and the sense of stability in the height direction cannot be obtained.
Further, when a ball is hit with a conventional golf club, stress concentrates on the upper end portion of the hosel portion 2 protruding outward from the crown portion 3, causing the shaft 4 to be broken.
[0005]
Furthermore, as a method of adjusting the mass of the club head main body without changing the conventional appearance, a special means for arranging a weight body for mass adjustment at the bottom in the hosel part or a weight body at the sole part, For example, a female screw is cut in the sole portion and is attached by a male screw formed in a weight body.
However, the club head main body mass adjustment methods as described above all move the center of gravity of the head main body downward (to the sole part side). There is a problem that it is necessary to adjust the weight, and that the exchange of the weight body requires the attachment and detachment of the shaft, which requires a lot of labor and time.
[0006]
The present invention has been devised by paying attention to such conventional problems, and is not affected by the characteristics of the shaft, and has a stable directionality and high trajectory without giving a sense of rigidity between the head body and the shaft. Furthermore, it is possible to effectively prevent shaft breakage, and easily adjust the position of the weight body without changing the appearance of the club head, and easily adjust the position of the center of gravity of the club head. An object of the present invention is to provide a metal hollow golf club head that can be used.
[0007]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a shaft head support member that is integrated with the sole portion from the sole portion toward the shaft insertion hole formed in the crown portion and separated from the crown portion. The shaft insertion hole is made larger than the diameter of the shaft, and a weight body is detachably attached to the base end portion of the shaft tip support member from the outside of the club head body through the shaft insertion hole. It is a summary.
[0008]
Weight body attached to a base end portion of the shaft tip supporting member is formed in a cross section a substantially C-shaped, which summarized in that for elastically clamping is fitted to the base end portion of the shaft tip supporting member It is.
[0009]
Furthermore , it is possible to adjust the position of the center of gravity by forming an uneven thickness portion in a weight body formed in a C-shaped cross section.
The present invention is configured as described above, and in the metal hollow golf club head, the shaft tip support member, that is, the hosel part is erected on the inner wall surface of the sole part toward the inside of the hollow part and separated from the crown part. By configuring the head body and shaft without giving a sense of rigidity, the characteristics of the shaft (for example, shaft deflection, twisting, elastic force, etc.) when swinging a golf club or impacting a ball (when hitting a ball) ), The head body itself can be deformed and hit, and as a result, a stable direction of the hit ball and a high trajectory can be obtained.
[0010]
Further, in the metal hollow golf club head having the structure as described above, the weight body is positioned on the base end portion of the shaft tip support member so that the weight body can be detachably attached. Thus, the center of gravity of the club head can be easily adjusted.
[0011]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
Note that the same components as those in the conventional example are denoted by the same reference numerals and description thereof is omitted.
1 is a longitudinal front view of a head body 1 of a golf club head showing a first embodiment (reference example) of the present invention, FIG. 2 is a longitudinal side view of FIG. 1, and the head body 1 includes a crown portion 3. The face portion 6 and the sole portion 5 are hollow and integrally formed of a metal material (for example, titanium or a titanium alloy).
[0012]
A shaft insertion hole 7 of the shaft 4 is formed in the crown portion 3, and an inner wall surface 5 a of the sole portion 5 is separated from the crown portion 3 toward the shaft insertion hole 7 formed in the crown portion 3. The shaft tip support member 8 (hosel) is integrally formed.
As shown in FIG. 1, the shaft tip support member 8 is formed in a hollow cylindrical shape, and the hollow cylindrical bottom portion 8a is formed to be sealed or opened. Further, the shaft insertion hole 7 formed in the crown portion 3 is formed larger than the diameter of the shaft 4 and the shaft tip support member 8 so that the side surface of the shaft 4 does not directly contact the peripheral portion of the shaft insertion hole 7. is there.
[0013]
Further, the gap between the shaft insertion hole 7 and the shaft 4 formed in the crown portion 3 is a ring-shaped weight made of a high specific gravity metal (for example, brass, copper,...) That covers the gap and is detachable. A body 9 is mounted, and the weight body 9 is formed with a recess 9 a that is detachably engaged with the peripheral edge of the shaft insertion hole 7.
Thus, the recess 9 a of the ring-shaped weight body 9 inserted in advance into the shaft 4 is engaged with the peripheral portion of the shaft insertion hole 7 in the gap between the shaft insertion hole 7 and the shaft 4 formed in the crown portion 3. Thus, the center of gravity of the head main body 1 can be set to a high center of gravity, and the head main body 1 can be prevented from blowing up at the time of hitting and stable swinging can be performed.
[0014]
3 and 4 show a longitudinal front view and a cross-sectional view taken along the line AA of the head main body 1 showing a second embodiment of the present invention, and this embodiment shows a shaft tip support member on the sole portion 5 side. 8, a weight body 10 having a substantially C-shaped cross section is attached to the base end portion 8b, and the head main body 1 has a low center of gravity. The weight body 10 is formed in a substantially C-shaped cross section as described above. The weight body 10 is fitted into the shaft 4 from the outside of the head body 1, and the weight body 10 is moved into the head body 1 to support the tip of the shaft. The base member 8 is fitted into the base end portion 8b and is elastically tightened and fixed.
[0015]
Further, a rubber or plastic seal member 11 is interposed in the gap between the shaft 4 and the shaft insertion hole 7 to prevent foreign matters such as dust and water from entering the hollow portion 1 a of the club head body 1. At the same time, it is possible to effectively prevent the shaft 4 from coming into contact with the peripheral edge of the shaft insertion hole 7 and to be damaged, to further prevent wind noise during swing, to improve the hitting sound, and to improve the feeling. Is.
[0016]
Furthermore, the center-of-gravity position can be adjusted by forming uneven thickness portions on the weight bodies 9 and 10 formed in a ring shape or a substantially C-shaped cross section.
As described above, in the metal hollow golf club head, the shaft tip support member 8 is erected on the inner wall surface 5a of the sole portion 5 toward the inside of the hollow portion 1a and separated from the crown portion 3, thereby it can be configured without having to have a sense of rigidity of the main body 1 and the shaft 4, this result, and during the swing of the golf club, at the time of ball impact (hitting), shaft 4 is integrally with the sole portion 5 The base end portion 8b of the formed shaft tip support member 8 can be used as a fulcrum.
[0017]
Therefore, at the time of swinging the golf club or at the time of ball impact (at the time of hitting the ball), as shown in FIG. 5, it is not affected by the characteristics of the shaft 4 (for example, shaft bending, twisting, elastic force, etc.) The head body 1 itself can be struck by deforming it as indicated by the arrow X, and as a result, a stable directionality of the struck ball and a high trajectory can be obtained.
[0018]
Further, in the metal hollow golf club head, the weight bodies 9 and 10 are detachably attached between the shaft insertion hole 7 formed in the crown portion 3 and the shaft 4 or the base end portion 8a of the shaft tip support member 8. With this configuration, the positions of the weight bodies 9 and 10 can be easily adjusted without changing the appearance of the club head, and the position of the center of gravity of the club head can be easily adjusted.
[0019]
Furthermore, by preventing foreign matter from entering the hollow portion 1a of the club head body 1 from the shaft insertion hole 7 formed in the crown portion 3, it is possible to prevent wind noise during swing and improve hitting sound. The feeling can be improved.
In the above embodiment, the head body 1 of the wood golf club has been described. However, it can be applied to a club head of an iron golf club.
[0020]
【The invention's effect】
According to the present invention, as described above, the shaft tip support member separated from the crown portion is formed integrally with the sole portion from the sole portion side toward the shaft insertion hole formed in the crown portion, inside the club head main body. The shaft insertion hole is made larger than the diameter of the shaft, and the weight body is detachably attached to the base end portion of the shaft tip support member from the outside of the club head main body through the shaft insertion hole. It is effective.
(1) When swinging a golf club or at the time of ball impact (at the time of hitting a ball), the head body itself is deformed and hit without being affected by the shaft characteristics (for example, shaft bending, twisting, elastic force, etc.). As a result, stable directionality of the hit ball and high trajectory can be obtained.
(2) Since the weight body can be detachably attached to the base end portion of the shaft tip support member, the position of the weight body can be easily adjusted arbitrarily without changing the appearance of the club head. The center of gravity of the head can be easily adjusted.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view of a head body of a wood golf club showing a first embodiment of the present invention.
2 is a longitudinal side view of the head body of the wood golf club of FIG. 1. FIG.
FIG. 3 is a longitudinal front view of a head body of a wood golf club showing a second embodiment of the present invention.
4 is a cross-sectional view taken along arrow AA in FIG. 3;
FIG. 5 is an explanatory view showing a deformed state of the head main body during swinging of the golf club or ball impact.
FIG. 6 is a longitudinal front view of a head body of a conventional wood golf club.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head main body 1a Hollow part 2 of head main body 2 Hosel part 3 Crown part 4 Shaft 5 Sole part 5a Inner wall surface of sole part 6 Face part 7 Shaft insertion hole 8 Shaft front end support member 8a Bottom part of shaft front end support member 8b Base end part 9 Weight body 9a Recess 10 Weight body 11 Seal member

Claims (3)

In a metal hollow golf club head, a shaft tip support member separated from the crown portion is formed integrally with the sole portion from the sole portion toward the shaft insertion hole formed in the crown portion inside the club head main body. The shaft insertion hole is made larger than the diameter of the shaft, and a weight body is detachably attached to the base end portion of the shaft tip support member from the outside of the club head main body through the shaft insertion hole. Metal hollow golf club head. The metal hollow golf club head according to claim 1, wherein the weight body is formed in a substantially C-shaped cross section, and is fitted into a base end portion of the shaft tip support member and is elastically tightened and fixed. The metal hollow golf club head according to claim 2, wherein an uneven thickness portion is formed in the weight body formed in a C-shaped cross section.

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