JP2837637B2 - Golf club head - Google Patents

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 having a metal shell.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Publication No. 61-33970 and Japanese Utility Model Publication No. 61-33973, a conventional so-called metal wood is formed by attaching a face to a golf club head body in which a plurality of metal shell pieces are integrally joined. The surface members were joined. Also, JP-A-5-137818,
As disclosed in JP-A-6-142236, a golf club head in which a main body side is integrally formed by plastic working or the like and a metal member on the face side is joined to the front opening is also proposed. ing.

[0003]

When a plurality of metal shell pieces are joined to form a golf club head body, it is difficult to maintain strength at a large number of welding points. In particular, titanium heads have high strength and excellent performance, but pure titanium is not sufficiently strong for use on the face surface, and it is difficult to achieve both lightness and strength. Further, although the β-type titanium alloy has high strength, it is difficult to process and is expensive, and there is a problem that the product price becomes too high.

[0004] The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a golf club head having high strength and light weight.

[0005]

According to the present invention, there is provided a face surface member, and a metal head body which is located behind the face surface member and which is hollow and has a face surface mounting portion opened. A shaft mounting pipe portion is integrally attached to the back surface side of the member, the face surface member is made of various β-type titanium, the head body and the shuffling member.
The mounting pipe is a golf club head made of various α-type titanium . Also, the face member and this face
The face mounting part is open and hollow behind the surface member.
A metal head main body, and the face surface portion
The shaft mounting pipe is integrally provided on the back side of the material.
The face member and the shaft mounting pipe portion
Is formed integrally from the same various β-type titanium,
The head body is a golf club made of various α-type titanium.
Is

Further, according to the present invention, a shaft mounting pipe portion is integrally formed on the back side of the face surface member by welding, and a hollow face surface mounting portion is opened behind the face surface member. A golf club head in which a head body is integrally formed by pressing, forging, or plastic working such as superplastic working, and the face surface member is joined to a face surface mounting portion of the head body.

[0007]

The golf club head of the present invention uses various types of high-strength β-type titanium for the face member, and the head body uses various α-type titanium that is easy to process.
The face surface member can be made thin and light, and the head body can be easily subjected to large plastic processing.
The press-formed shell of the body can form a light head body with necessary and sufficient strength.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. The golf club head of this embodiment is
It comprises a face member 10 for hitting a ball and a hollow head body 12. The face member 10 has a shaft mounting pipe 14 integrally welded to the back surface thereof. The shaft mounting pipe 14 is, as shown in FIG.
The lower end 14a is welded near the lower end of the face member 10, and the upper portion 14b is also welded near the upper end of the face member 10. The shaft mounting pipe 14 is formed by hollowing out a titanium rod. The lower end portion 14a is formed solid, and the side through hole 14c is formed in a pipe shape. Further, a concave portion 13 is formed in a portion where the shaft mounting pipe 14 is located in the face surface mounting portion 12a of the head main body 12.

[0010] The face member 10 is a collision surface with a golf ball, and is formed with a plurality of parallel irregularities 10a on the front and back surfaces to improve strength. The unevenness 10a is formed by press working. Face surface member 1
For 0, a high-strength β-type titanium alloy is used. The head body 12 and the shaft mounting pipe 14 are made of α-type titanium (pure titanium) which is relatively soft and easy to process. As a β-type titanium alloy, Ti-22V
-4Al alloy is preferable, and Ti-13V-11C is more preferable.
r-3Al alloy, Ti-11.5Mo-6Zr-4.
5Sn alloy and Ti-15Mo-3Cr-3Sn-3
Al or the like, or other titanium alloys,
It can be appropriately adopted according to its performance.

In this method of manufacturing a golf club head, first, the face member 10 is cold or hot pressed and plastically deformed to form a predetermined shape. As a pressing method, an appropriate method that is easy to process may be selected. Then, the face member 10 and the shaft mounting pipe 14 are welded by removing burrs and unnecessary portions at the peripheral edge. The welding points are the lower end portion 14a and the upper portion 14b of the shaft mounting pipe 14. At this time, welding is performed in a state where the angle between the shaft mounting pipe 14 and the face surface member 10 is accurately set by a jig (not shown).

Further, the head body 12 is formed by integrally forming an α-type titanium plate by setting it in a predetermined mold and plastically deforming it by press working. Furthermore, 12 of the head body
When the face surface mounting portion 12a of the head main body 12 is slightly narrowed depending on the shape of the head body 12, a notch portion 12b is formed at a corner of the face surface mounting portion 12a.
After processing the 2b, it is plastically processed and welded so that the end faces are brought close to each other, and the opening of the face surface mounting portion 12a is narrowed. The recess 13 of the face surface mounting portion 12a may be formed at the time of plastic working or thereafter.

Thereafter, the face member 10 is welded to the face mounting portion 12a of the head body 12. Welding is
Laser welding, electron beam welding, or the like can be appropriately selected. Then, the shaft 2 is attached to the shaft mounting pipe 14.
0 is inserted and fixed with an adhesive or the like.

In the golf club head of this embodiment, the face member 10 is made of various kinds of high-strength β-type titanium, and the head body 12 is made of various α-type titanium that is easy to process. Can be made thin and light, and the head main body 12 is subjected to a large plastic working, and is formed of an integral press-formed shell to form the light head main body 12 with necessary and sufficient strength. Furthermore, the face angle, the lie angle, and the loft angle are set accurately, and a high-quality golf club can be formed. Further, since the lower end 12b of the shaft mounting pipe 14 is welded to the lower end of the face member 10, the insertion length of the shaft 20 is large, and the strength and safety are high.

The golf club of the present invention is not limited to the above embodiment. As shown in FIG. 5, the face member 10 and the shaft mounting pipe portion 24 are integrally formed of various β-type titanium alloys. It is a good thing. Also, the head body may be formed as one or two bodies.

[0015]

According to the golf club head of the present invention, the face member is made of various types of .beta.-type titanium having high strength, and the head body is made of various types of .alpha.-type titanium which are easy to process. It can be thin and light. Further, the head body can be subjected to large plastic working, and a light head body with necessary and sufficient strength can be formed by an integral press-formed shell. Further, since the tip of the shaft mounting pipe is integrally provided at the lower end of the face surface, the mounting strength of the shaft is high.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of a golf club head according to the present invention.

FIG. 2 is a rear view of the face member of the golf club head of the embodiment.

FIG. 3 is a left side view of the face member of the golf club head of the embodiment.

FIG. 4 is a longitudinal sectional view of a center portion of the face member of the golf club head according to the embodiment.

FIG. 5 is a left side view of another embodiment of the golf club head of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Face surface member 12 Head main body 12a Face surface mounting part 14 Shaft mounting pipe

Claims (3)

(57) [Claims] 1. A face head, comprising: a metal head main body which is located behind the face head and has a hollow face-face mounting part which is open behind the face head; The pipe part is attached integrally ,
Said face member is made of various β-type titanium, the f
The main body and the shaft mounting pipe are
Golf craft head made of tongue . 2. A face member, and the face member.
Gold with a hollow face opening at the back
And a back surface of the face member.
The shaft mounting pipe part is provided integrally on the side
Ace surface member and shaft mounting pipe
The above-mentioned head body is integrally formed of seed β-type titanium.
Is a golf club head made of various α-type titanium . 3. A shaft mounting pipe portion is integrally formed on the back surface side of the face surface member by welding, and a hollow head body having an open face surface mounting portion which is located behind the face surface member is made of plastic. The golf club head according to claim 1 or 2, wherein the face member is integrally formed by processing and the face member is joined to a face surface mounting portion of the head body.