JPH05329234A - Golf club head - Google Patents

Abstract

PURPOSE:To enable custom-making of golf club heads in correspondence to respective golf players by freely setting the thicknesses, etc., of the respective shells of the heads and expanding the sweat areas. CONSTITUTION:The head is constituted by press forming a face shell 2 consisting of a shell, an upper face shell 3 and a side peripheral face and sole shell 4. The edges thereof are welded and bonded to form a hollow part, by which the head is integrally formed. As a result, the free setting of the thicknesses, etc., of the respective shells and the expanding of the sweat areas are possible. The custom making of the golf club heads in correspondence to the respective golf players is executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hollow golf club head which is so-called metal wood or the like.

[0002]

2. Description of the Related Art Conventionally, a hollow golf club head of this type (hereinafter referred to as a head) is manufactured by forming a face, a sole, an upper surface, etc. by a lost wax method and then connecting a shaft to the head. Was there. In the lost wax method for manufacturing the head, a wax formed in the shape of the head is used as a model, a mold material is packed around the wax, and the wax is poured out by heating to mold the wax.

[0003]

In the conventional head by the lost wax method, the thickness of each portion such as the sole and the upper surface is formed because the mold material is packed and the wax is cast out by heating. There was also a limit when we wanted to make the thickness thinner. For this reason, even with a hollow head having the same weight, the hollow portion cannot be enlarged, and as a result, the center of gravity of the head cannot be arranged rearward, that is, the distance between the center of gravity of the head and the face cannot be increased, and the sweet area There was a problem that it could not be expanded.

Further, in the lost wax method, depending on the skill of each golf player, for example, the position of the sole,
Manufacture the size according to each golf player,
There is also a problem that it becomes expensive when it is so-called made-to-order.

The present invention solves the above problems and allows the thickness of each shell of the head to be freely set to expand the sweet area, and it is possible to tailor-make for each golf player. An object is to provide a golf club head.

[0006]

DISCLOSURE OF THE INVENTION The present invention is a golf club head in which a hollow portion is formed inside by joining the edges of each divided shell obtained by pressing a plate-shaped titanium, titanium alloy, or aluminum alloy. is there.

[0007]

With the above construction, for example, the shell is formed to be relatively thin, the hollow portion is enlarged, the center of gravity of the head is arranged rearward, and the sweet area is enlarged, and the sole is relatively thick. By forming the upper surface relatively thin and disposing the center of gravity of the head below, the sweet area can be further expanded.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The head 1 is formed integrally with a face shell 2, an upper shell 3, and a side peripheral surface / sole shell 4, which are shells, by welding and joining their edges to form a hollow portion 1A. A metal plate of titanium (specific gravity: about 4.5), titanium alloy, aluminum alloy (specific gravity: about 2.7) is formed by pressing a plate material using a mold. A face 5, which is a shot surface, is formed on the front surface of the face shell 2, and a semi-cylindrical portion 6 is provided upright on one side of the top shell 3. The side peripheral surface / sole shell 4 is formed with a sole portion 7 at a lower portion thereof, and a side peripheral surface portion 8 is formed so as to cover left and right side surfaces and a rear portion. A cylindrical portion 9 is formed. A shaft mounting pipe 11 (hereinafter referred to as a pipe) for mounting the shaft 10 is provided between the pair of semi-cylindrical portions 6 and 9. The pipe 11 has its upper end fixed to the semi-cylindrical parts 7 and 9 and its lower end fixed to the sole part 7, and the lower end of the shaft 10 is fixed to this pipe 11.
In the pressing, the thickness A of the sole portion 7 is formed to be thicker than the thickness B of the side peripheral surface portion 8.
Is thicker than the wall thickness C of the upper shell 3.

As described above, in the above-described embodiment, a metal plate of titanium, titanium alloy, or aluminum alloy having a small specific gravity is pressed to form a shell such as the face shell 2, and the thickness A, B of each shell, C can be set freely, and by integrating these, it is possible to increase the size of the hollow portion 1A and increase the size of the head 1 even if the head has the same weight. Therefore, the center of gravity G of the head 1 can be arranged rearward and the distance between the face shell 2 and the center of gravity G can be increased to enlarge the sweet area. Further, since the face shells 2 and the like are formed by press working, the thickness can be easily controlled by making the thickness uniform or by thickening or thinning a certain portion. Etc. can be adjusted easily. Moreover, since the thickness can be easily controlled, the thickness of each portion can be formed in consideration of, for example, the strength of the head 1, and thus the head 1 can be provided in which the reinforcing ribs and the like are not required in the hollow portion 1A. Further, in the embodiment, the wall thickness A of the sole portion 7 is formed thicker than the wall thickness B of the side peripheral surface portion 8, and the wall thickness B is formed thicker than the wall thickness C of the upper shell 3. The center of gravity G of the head 1 can be lowered downward. Therefore, the distance between the face shell 2 and the center of gravity G can be further increased. 4 shows a second embodiment of the present invention, in which a head 21 has a face 22, an upper surface front portion 23 / side peripheral surface front portion 24, a sole portion front portion 25, and a semi-cylindrical portion 26. The front shell 27 is formed by pressing, and the upper surface rear part
28. Shaft mounting for attaching the shaft 33 to the side peripheral surface rear portion 29, the sole portion rear portion 30, and the rear side shell 32 forming the semi-cylindrical portion 31 by pressing, and attaching the shaft 33 to the semi-cylindrical portions 26, 31. The pipe 34 is incorporated, and the edge portion of the front shell shell 27 and the edge portion of the rear shell shell 32 are welded and integrally joined. During the press working, for example, the front portion 25 of the sole portion is formed to be thicker than the front portion 24 of the side peripheral surface, and the front portion 24 of the peripheral side surface is formed to be thicker than the front portion 23 of the upper surface. The rear shell 32 is similarly formed.

Therefore, in the above-described embodiment, the front shell 27 and the rear shell 32 are formed by pressing a metal plate of titanium, titanium alloy or aluminum alloy having a small specific gravity, and the thickness of each part can be freely set. Yes, and by combining these, even with the same head weight,
The hollow portion 21A can be enlarged to increase the size of the head 21. Therefore, the center of gravity of the head 21 can be arranged rearward, and the distance between the face 22 and the center of gravity can be increased to enlarge the sweet area. Furthermore, the front part of the sole part 25
Is formed thicker than the side peripheral surface front portion 24, and the side peripheral surface front portion 24 is formed.
Can be formed thicker than the upper front part 23 to lower the center of gravity and further expand the sweet area.

The present invention is not limited to the above-mentioned embodiment, but various modifications are possible, for example, a divided shell for vertically dividing the head into two parts may be integrally connected.

[0012]

According to the present invention, titanium, a titanium alloy, or an aluminum alloy is pressed to form respective divided shells, and the edges of the divided shells are joined to form a hollow portion inside. It is possible to manufacture a golf club head that can be freely manufactured, such as by setting the thickness of each shell of the head to be freely thin to expand the sweet area, or by custom-made corresponding to each golf player.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the first embodiment of the present invention.

FIG. 3 is a sectional view showing a first embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Head 1A Hollow Part 1A 2 Face Shell 3 Top Shell 4 Side Perimeter / Sole Shell 27 Front Shell 32 Rear Shell

Claims (1)

[Claims] 1. A golf club head characterized in that a hollow portion is formed inside by joining the edges of the respective split shells made by pressing titanium, a titanium alloy, or an aluminum alloy.