JPH05305162A - Golf club head - Google Patents

Abstract

PURPOSE:To facilitate the providing of a display section even when a metallic material of a head is high in strength and hardness. CONSTITUTION:A window hole 12 is formed on a sole 7 and is provided with a display plate 13 comprising a separate member having a display part 14 formed. Thus, the display part 14 can be provided simply. The display plate 13 is made of a metallic material with a larger specific weight thereby enabling the lowering of the center of gravity G of a head.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a golf club head of this type (hereinafter referred to as a head), Japanese Patent Laid-Open No. 60-36074 discloses a face member, an upper face member, a side peripheral face member, which is obtained by pressing a metal plate. A hollow head is disclosed in which the sole members are each formed of a metal shell, and these metal shells are integrally connected. Further, in Japanese Patent Laid-Open No. 63-154186, a metal plate is pressed to form a face member, an upper half of an upper surface member and a side peripheral surface member, and a lower half of a sole member and a side peripheral surface member with a metal shell. A hollow head is disclosed that is formed and integrally joins each of these metal shells.

[0003]

In the conventional head, there is provided a display portion on the sole of the head, such as # 3, # 4, # 5, etc., which is composed of stamps such as club numbers, product names, or manufacturer names. It is provided. However, if the hardness of the metal material is high, its processing is difficult. For example, when a relatively lightweight pure titanium having a specific gravity of about 4.5 is used as a metal shell, the material strength and hardness of pure titanium are high, and in order to form a display portion by press working, the strength and hardness are high. You have to use the same mold. The same applies to titanium alloys.

Further, in the head, it is desirable to dispose the center of gravity of the head as low as possible so that the golf ball can be more easily lifted during a shot. Further, in order to enlarge the sweet area of the face, it is desirable to dispose the center of gravity as rearward as possible.

According to the present invention, the display section can be easily provided even when the metal material of the head has high strength and hardness by solving the above-mentioned problems, and the center of gravity is disposed as low as possible. It is an object of the present invention to provide a head that makes it easier to lift a golf ball during a shot.

[0006]

The present invention according to claim 1 is a hollow golf club head in which a plurality of metal shells are integrally connected and a display portion is provided on the sole, and a window is formed on the sole of the golf club head main body. In the golf club head, a hole is formed, the display portion is formed, and a display plate having a larger specific gravity than the sole member is provided in the window hole.

The invention according to claim 2 is the golf club head according to claim 1, wherein the golf club head including the sole is formed of titanium or a titanium alloy, and the display plate is formed of stainless steel, iron or beryllium copper alloy. is there.

[0008]

With the above structure, by fixing the display plate having the display portion such as a marking in advance to the window hole of the sole body,
The display portion can be easily provided on the sole, and the center of gravity can be arranged as low as possible so that the golf ball can be easily lifted during a shot. Further, the sole body side is made of titanium or a titanium alloy, the display plate is made of stainless steel, iron or beryllium copper alloy, and the center of gravity can be arranged as low as possible by utilizing the difference in specific gravity between the two. ..

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The head body 1 is formed by integrally welding a face member 2, an upper surface member 3, and a side peripheral surface / sole member 4, which are metal shells, at their edges, and these are made of titanium (specific gravity: about 4.5). ), A metal such as a titanium alloy is formed by pressing using a mold. A face 5, which is a shot surface, is formed on the front surface of the face member 2, and a semi-cylindrical portion 6 is provided upright on one side of the upper surface member 3. The side peripheral surface / sole member 4 is formed with a sole 7 at a lower portion thereof, and a side peripheral surface 8 is formed so as to cover left and right side surfaces and a rear portion, and a semi-cylindrical cylinder is provided on one side of the side peripheral surface 8. The part 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 7 and 9. The upper end of this pipe 11 is the semi-cylindrical portion 7,
The bottom end of the shaft 10 is fixed to the pipe 11. Further, a window hole 12 is formed in the sole 7, and a display plate 13 is welded to the window hole 12. The display plate 13 is made of stainless steel (specific gravity: about 7.9), iron or beryllium copper alloy (specific gravity: about 8.2), and has # 3 on its lower surface.
The display portion 14 such as a marking is provided by an appropriate means such as press working or shot blasting.

Next, the manufacturing method will be described. The face member 2, the upper surface member 3, and the side peripheral surface / sole member 4 are each manufactured by press working with a mold, and the window portion 12 of the sole 7 is preliminarily pressed to display the display portion 14.
A display plate (13) on which is formed is welded to the window hole (12). Then, the pipe 11 is welded to the side peripheral surface / sole member 4, the upper surface member 3 is then welded to the side peripheral surface / sole member 4, and the semi-cylindrical portion 6 is welded to the pipe 11. After that, the face 5 is welded and integrated with a predetermined loft angle A. After that, the head body 1 is deburred, and finish processing such as polishing is performed.

As described above, in the first embodiment, in the hollow head in which the face member 2, the upper surface member 3, the side peripheral surface / the sole member 4 are integrally combined and the display portion 14 is provided on the sole 7, the sole 7 is A window hole 12 is formed, and the display portion is formed in the window hole 12.
By providing the display plate 13 that is a separate member forming the 14, the side peripheral surface / sole member 4 has a relatively high strength such as titanium,
Even if a metal material with high hardness and small specific gravity is used, the display board
By using 13 as a separate member such as stainless steel, iron or beryllium copper alloy, which has a relatively low hardness and is easy to process,
The display unit 14 can be easily provided. Further, by using a metal material such as beryllium copper alloy having a relatively large specific gravity for the display plate 13, the center of gravity G of the head is lowered, and the golf ball can be more easily lifted during a shot.

FIG. 5 shows a second embodiment of the present invention. The same parts as those of the first embodiment are designated by the same reference numerals and detailed description thereof will be omitted. In the second embodiment, the display plate having the window 12 formed in the rear portion of the sole 7 and the display portion 14 formed therein.
13 is welded to the window hole 12. Therefore, in the second embodiment, similarly to the first embodiment, the display portion 14 is simply provided, the center of gravity G of the head is lowered, the golf ball can be more easily lifted during a shot, and the center of gravity G is located rearward. You can expand the sweet Eliya area.

The present invention is not limited to the above-mentioned embodiment. For example, a metal plate is pressed to form the face portion, the upper half of the upper surface member and the side peripheral surface member, and the sole member and the side peripheral surface member. The lower half may be formed of metal shells, and these metal shells may be integrally joined to each other to be manufactured. Alternatively, a filling material such as urethane foam may be provided in the hollow portion of the head. Deformation is possible.

[0014]

According to the present invention, in a hollow golf club head in which a plurality of metal shells are integrally connected and a display portion is provided on the sole, a window hole is formed in the sole of the golf club head body, and the display portion is provided. A golf club head having a display plate having a specific gravity larger than that of the sole member provided in the window hole, and by providing a display plate that is a member different from the sole member, the center of gravity of the head becomes low while easily providing the display portion,
You can lift the golf ball more easily when shot.

Also, according to the present invention, the golf club head including the sole is formed of titanium or a titanium alloy, and the display plate is formed of stainless steel, iron or beryllium copper alloy. Use

[Brief description of drawings]

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

FIG. 5 is a perspective view from below showing a second embodiment of the present invention.

[Explanation of symbols]

 1 head body 2 face 3 upper surface member 4 side peripheral surface / sole member 12 window hole 13 display plate 13 14 display unit

Claims (2)

[Claims] 1. A hollow golf club head in which a plurality of metal shells are integrally connected and a display portion is provided on the sole, and a window hole is formed in the sole of the golf club head body to form the display portion. A golf club head, wherein a display plate having a larger specific gravity than a member is provided in the window hole. 2. The golf club head according to claim 1, wherein the golf club head including the sole is made of titanium or a titanium alloy, and the display plate is made of stainless steel, iron or beryllium copper alloy.