JPH1015119A - Golf clubhead - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf clubhead allowing the application of a lightweight structure, the expansion of a hitting surface and easy manufacture. SOLUTION: This clubhead is made of a shell body 10 having an open front end 11 and a hitting part body 20 forged for closing the open end 11 of the shell body 10. Also, the hitting part body 20 is made of a hitting plate 21 having a hitting surface 21a for hitting a ball and a shaft mounting part 25 integrated with the shoulder 21b of the hitting plate 21. The shaft mounting part 25 is made of a support plate 26 projected backward, and a shaft mounting cylinder 27 led through the support plate 26. Also, the hitting plate 21 is provided with an engagement step part 29 projected backward for engagement with the open end 11 of the shell body 10. In this case, the engagement step part 29 is positioned inside the hitting plate 21 at a position faced to the shaft mounting part 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head capable of reducing the weight, increasing the hitting surface and facilitating the manufacture.

[0002]

2. Description of the Related Art Conventionally, a golf club head of a driver is generally hollow to reduce the weight, and a technique for enlarging the hitting surface by reducing the weight has been sought.

[0003] By the way, such a hollow golf club head is manufactured by combining a large number of members. Recently, for the purpose of facilitating the manufacture, a shell having an open end in the front has been used. There has been proposed a two-membered forged ball body that is forged and closes the open end of the shell.

[0004] As such a golf club head,
For example, there is one disclosed in Utility Model Registration No. 3013980. In this golf club head, the hitting portion main body has a hitting plate having a hitting surface for hitting a golf ball, and a cylindrical hitting plate formed on an outer peripheral portion of the hitting plate. It is composed of a peripheral wall protruding rearward and a shaft mounting cylinder provided on one shoulder of the peripheral wall, and a rear end surface of the peripheral wall abuts an open end of the shell, and the peripheral wall has At the rear end, an engaging step portion fitted to the shell is provided around the shell to facilitate the work of assembling the shell and the hitting portion body at the time of manufacture.

[0005]

However, in such a golf club head, forging is performed so as to form an engaging step at the rear end of the peripheral wall, but an extremely thin engaging step is formed by forging. Therefore, when the thickness of the peripheral wall portion is set to a thickness corresponding to the required strength, a portion forming the engaging step portion is formed on the rear end surface of the engaging step portion that contacts the open end of the shell. Disappears. Therefore, the portion where the engaging step portion is provided in the peripheral wall portion must be thick, which increases the weight and hinders the expansion of the volume of the golf club head,
There is a problem that the hitting surface is reduced.

[0006] In view of the above circumstances, the present invention can reduce the weight, increase the hitting surface, and
It is an object of the present invention to provide a golf club head that can be manufactured easily.

[0007]

SUMMARY OF THE INVENTION A golf club head according to a first aspect of the present invention comprises a shell having an open end in the front, and a hitting ball body forging and closing the open end of the shell. In the club head, the hitting portion main body includes a hitting plate having a hitting surface for hitting a golf ball, and a shaft mounting portion provided integrally with one shoulder of the hitting plate, and the shaft mounting portion projects rearward. And a shaft mounting cylinder provided on the support plate, wherein the hitting plate is provided with an engagement step portion that engages with the open end of the shell.

In other words, instead of the conventional configuration in which the engaging step is formed at the rear end of the peripheral wall portion, the engaging step is provided directly on the hitting plate. Disappears.

According to a second aspect of the present invention, in the golf club head according to the first aspect, the engagement step portion is formed of a ball striking plate,
It is provided at a position facing the shaft mounting portion.

That is, in the assembling work of the hitting portion main body and the shell at the time of manufacturing, the positioning of the hitting portion main body and the shell on the shaft mounting portion side is performed by a support plate protruding rearward and a shell. Positioning between the hitting portion main body and the shell on the opposite side of the shaft mounting portion of the hitting portion main body is performed by engagement with the corresponding recessed portion and engagement between the engaging step portion and the shell. This allows
The combination of the hitting portion main body and the shell can be easily performed, and compared with the case where the engaging step portion is provided almost all around,
The weight of the engagement step is reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. Golf club head 1 of the present embodiment
Reference numeral 00 denotes a bowl-shaped shell 10 cast from a titanium alloy and having an open end 11 in front as shown in the side sectional view of FIG.
And a hitting portion main body 20 forged with a titanium alloy and closing the open end 11 of the shell body 10.
A hitting plate 21 having a hitting surface 21a for hitting a golf ball (not shown) on its surface, and a hitting plate 2 as shown in the plan view of FIG.
The shaft mounting portion 25 is provided integrally with one of the shoulder portions 21b.

The shaft mounting portion 25 includes a support plate 26 projecting rearward and the shaft mounting cylinder 2 penetrating the support plate 26.
The shell 10 has a recess 12 with which the support plate 26 is engaged.

The lower end of the shaft mounting cylinder 27 is close to the inner bottom surface 13 of the shell 10 as shown in FIG.

As shown in FIG. 1, the hitting plate 21 is provided with an engaging step portion 29 projecting rearward and engaging with the inner peripheral surface 11a of the open end 11 of the shell 10. Part 29
Is provided in the ball striking plate 21 at a position facing the shaft mounting portion 25 (that is, at the lower end side in FIG. 1 called a top portion).

In the golf club head 100, the peripheral wall portion does not protrude cylindrically behind the hitting plate 21 as in the related art, and therefore, the engaging step portion 29 is formed at the rear end of the peripheral wall portion. Instead, the engaging step portion 29 is directly
Is provided, so that there is no need for a thick portion that is unnecessary in terms of structural strength for providing the engagement stepped portion 29. Further, since the engaging step portion 29 is provided at a position facing the shaft mounting portion 25 in the hitting plate 21, its weight is smaller than when the engaging step portion 29 is provided substantially all around. It is reduced.

Therefore, in the golf club head 100,
Since the weight can be reduced, the internal volume can be increased, and the hitting surface 21a can be further increased.

Further, in the golf club head 100, the engagement strength between the engagement step portion 29 and the inner peripheral surface 11a of the open end 11 of the shell 10 enhances the support strength of the hitting plate 21 against the impact at the time of hitting. The effect is also exhibited. In addition, durability is improved by improving the support strength of the hit ball 21.

Since the lower end of the shaft mounting cylinder 27 is close to the inner bottom surface 13 of the shell 10 as shown in FIG. 2, the center of gravity of the golf club head 100 can be reduced.

Further, in the golf club head 100, during the assembling operation of the hitting portion main body 20 and the shell 10 during manufacturing, the hitting portion main body 20, the shell 10 and the shaft mounting portion 25 shown in FIG. Is positioned by engaging the support plate 26 projecting rearward with the concave portion 12 of the shell 10, and the hitting portion main body 20 and the shell 10 on the opposite side of the shaft attaching portion 25 of the hitting portion main body 20. Can be determined by the engagement between the engagement step 29 and the shell 10. Then, the hitting portion main body 20 and the shell 10 are welded.

As a result, in the golf club head 100, the operation of assembling the hitting portion main body 20 and the shell 10 can be easily performed, so that the manufacturing can be facilitated.

The shell 10 may be formed of a synthetic resin material such as carbon fiber reinforced plastic.

A step may be formed on the outer peripheral surface of the open end 11 of the shell 10, and the engaging step 29 may be provided on the periphery of the hitting plate 21 so as to engage with the step.

Further, the engaging step portion 29 may be provided around substantially the entire outer periphery of the hitting plate 21 except for the portion where the support plate 26 is provided. It may be configured so as to be provided.

[0024]

According to the first aspect of the present invention, since the engaging step portion is provided directly on the hitting plate, an unnecessary thick portion in structural strength is eliminated. Therefore, the weight can be reduced, and the hitting surface can be enlarged. In addition, since the operation of combining the hitting portion main body and the shell can be easily performed by the engagement step portion, the production can be facilitated.

In addition, there is an effect that the support strength of the hitting plate is improved by the engagement step portion.

According to the second aspect of the present invention, the engaging step portion is provided at a position facing the shaft mounting portion in the hitting plate, so that the hitting portion main body and the shell at the time of manufacture are not provided. In the assembling work, the positioning of the hitting portion main body and the shell on the shaft mounting portion side is performed by engaging a support plate protruding rearward with a corresponding recess of the shell, and the shaft mounting of the hitting portion main body is performed. Positioning of the hitting ball body and the shell on the side opposite to the part side can be performed by engagement of the engagement step portion and the shell.
Therefore, the hitting portion main body and the shell can be easily combined, and the weight of the engaging step portion is reduced as compared with the case where the engaging step portion is provided almost all around. This allows
Further, the weight can be reduced and the hitting surface can be enlarged.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional plan view showing one embodiment of a golf club head of the present invention.

FIG. 2 is a side view of the golf club head of FIG. 1 taken along the line XX.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Shell 11 ... Open end 20 ... Hitting part main body 21 ... Hitting plate 21a ... Hitting surface 21b ... One shoulder 25 ... Shaft mounting part 26 ... Support plate 27 ... Shaft mounting cylinder 29 ... Engagement step part 100 ... Golf Club head

Claims (2)

[Claims] 1. A golf club head comprising: a shell having an open end in the front; and a hitting ball body forged and closing the open end of the shell, wherein the hitting ball body hits a golf ball. And a shaft mounting portion integrally provided on one shoulder of the hitting plate. The shaft mounting portion includes a support plate protruding rearward and a shaft provided on the support plate. A golf club head comprising a mounting cylinder, wherein the hitting plate is provided with an engagement step portion that engages with an open end of the shell. 2. The golf club head according to claim 1, wherein the engagement step portion is provided in the hitting plate at a position facing the shaft mounting portion.