JPH07194746A - Wood club head for golf - Google Patents

Abstract

PURPOSE:To facilitate the joining work of a shaft inserting member and the correction of a fitting angle and to stabilize a fitting direction by improving the joining strength of the shaft inserting member to the head provided with hollow metal outer shell structure composed of plural divided bodies to be joined one and another. CONSTITUTION:A main body 1 of the head is formed by the hollow metal outer shell structure composed of three divided bodies of a ball hitting face shell part 11, upper face shell part 12 and remaining shell part 13 provided with a bottom face shell part 14 and a peripheral side face shell part 15. At a heel side base part 2 of the main body 1 of the head, a shaft inserting member 4 is arranged together with the joining of respective divided bodies 11, 12 and 13, and a heel side edge part 12a of the upper face shell part 12 among the respective divided bodies 11, 12 and 13 of the main body 1 of the head is joined at a middle position in the lengthwise direction of this shaft inserting member 4 at least.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf wood club head having a hollow metal outer shell structure, and more particularly to a head body having a ball striking face shell portion, a top surface shell portion, a bottom surface shell portion and a peripheral side surface shell portion. It is formed of a three-piece body including the remaining shell portion including the shaft, and a structure for attaching the shaft to the head body by joining the three-piece body is devised.

[0002]

2. Description of the Related Art Conventionally, a golf club head for golf of this type (hereinafter referred to as a metal head) is composed of a metal outer shell formed by press molding of iron, stainless steel or titanium (Ti) alloy. It is known that the main body is formed of a plurality of divided bodies, and these divided bodies are welded to each other to be joined together.

When a shaft is attached to such a metal head, as shown in FIGS. 3 and 4, the divided bodies a1, a2, a3 constituting the head main body A are welded together with the shaft insertion pipe member B. The entire head of the head main body A outside in a completely exposed state, or
As shown in FIGS. 5 and 6, the entire shaft insertion pipe member B is joined in the head main body A in an embedded state, and the mounting end side of the shaft C is inserted into the shaft insertion pipe member B and welded. The current situation is that

[0004]

However, in the above-described conventional metal head, when the head body A is joined with the entire shaft insertion pipe member B being completely exposed to the outside, the head is Although the mounting angle of the shaft insertion pipe member B with respect to the main body A can be easily corrected, the strength of the joints between them is inferior and the mounting direction of the shaft insertion pipe member B during the joining operation tends to be unstable.

Further, when the entire shaft insertion pipe member B is embedded and joined in the head body A, the joining strength can be maintained sufficiently, but the joining work is difficult and the head body is difficult. It is difficult to correct the mounting angle of the shaft insertion pipe member B with respect to A.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to enhance the joint strength of a shaft inserting member to a head having a hollow metal outer shell structure composed of a plurality of divided bodies which are joined to each other, and to improve the joining work and mounting angle of the shaft inserting member. It is an object of the present invention to provide a golf wood club head that can be easily corrected and can be stabilized in the mounting direction.

[0007]

In order to solve the above-mentioned problems, the present invention provides a head body having a hollow metal outer shell structure with a ball striking face shell portion, an upper surface shell portion, a bottom surface shell portion and a peripheral side surface. A golf club which is formed by joining three parts with the remaining shell part including the shell part to each other and arranging and joining a shaft inserting member at the heel side base end part of the head body together with the joining of these respective split parts. In the wood club head, at least the heel side end portion of the upper shell of each divided body of the head main body is joined at a midway portion in the length direction of the shaft insertion member. Means a portion between the upper end and the lower end of the shaft insertion member.

In this case, if a stopper for restricting the insertion depth of the shaft is provided inside the shaft insertion hole formed in the upper end surface of the shaft insertion member, it is convenient for joining the shaft and the head. In addition, the action and effect of the present invention can be obtained even if a locking portion is provided at an intermediate portion in the length direction of the shaft insertion member.

[0009]

That is, according to the present invention, by adopting the above-mentioned structure, a hollow body composed of three divided bodies of a hitting surface shell portion, a top surface shell portion, and a remaining shell portion including a bottom surface shell portion and a peripheral side surface shell portion is provided. Since a shaft inserting member is provided at the heel side base end portion of the head body having a metal outer shell structure, and at least the heel side end portion of the upper surface shell portion of each divided body is joined to the middle portion of the shaft inserting member. In addition, the joint position between each divided body and the shaft insertion member is stable, the joint work can be easily performed, and the mounting direction can be stabilized.

Further, since the stopper for restricting the insertion depth of the shaft is provided inside the shaft insertion hole formed in the upper end surface of the shaft insertion member, the depth for inserting the shaft into the shaft insertion member is set. Is regulated,
The joining state is stable and the joining strength is enhanced.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will now be described in detail with reference to the drawings shown in FIGS. 1 and 2. As shown in FIG. 1, reference numeral 1 in the drawing denotes a golf club head for golf according to the present invention. It is the main body.

The head main body 1 has a hollow outer shell structure made of a thin metal plate material, and a heel side base end portion 2 serving as a shaft mounting base portion thereof has a shaft made of a metal material weldable to the head main body 1. The insertion member 4 is integrally provided by being inserted and arranged in a separate body and welded.

At least an upper portion of the shaft inserting member 4 is formed of a pipe-shaped rod-shaped body 5. Further, when the diameter of the rod-shaped body 5 on the lower portion 5a side is made smaller than the diameter on the upper portion 5b side and cut out in a stepped state, a locking portion 6 is formed at an intermediate portion in the length direction. Further, a shaft insertion hole 7 is provided on the upper end surface of the rod-shaped body 5. Inside the shaft insertion hole 7, a shaft 8 described later is provided.
Is formed with a hole bottom 7a that acts as a stopper for restricting the insertion depth.

As shown in FIG. 2, in the head body 1 described above, a thin metal plate manufactured by, for example, rolling is used as a thin metal plate material forming the outer shell, and the thin metal plate is placed in a mold and pressed or pressed. A plurality of divided bodies thinned by superplastic working, for example, a ball striking face shell part 11 forming a ball striking face extended by bending the upper end edge 11a so as to form the front end part of the head upper surface, The upper surface shell portion 12 forming the upper surface of the head, and the remaining remaining shell portion 13, that is, the bottom surface shell portion 14 on the bottom surface side and the peripheral side surface shell portion 15 on the rear surface side and the toe / heel side are divided into three parts, Each of these divisions 1
The heads 1, 12 and 13 are welded to each other and integrally joined to each other so that the total weight of the head is maintained at a maximum of 210 g or less, preferably about 200 g.

Then, the heel side end portion 12 of the upper shell 12 corresponding to the heel side base end portion 2 of the head body 1 as described above.
Semicircular notch joints 16 and 17 are formed at the heel side end 13a of the a and the remaining shell 13, and these notch joints 16 and 17 are joined to the shaft insertion member 4. . When the engaging portion 6 is formed at an intermediate portion of the rod-shaped body 5 of the shaft inserting member 4, the notch joint portions 16 and 17 are engaged with the engaging portion 6 and welded by welding. To be done. At this time, when the lower portion 5a side of the rod-shaped body 5 is extended, the extended end portion is brought into contact with the bottom shell portion 14 on the bottom surface side of the head body 1, so that they can be welded and fixed to each other. Become.

Reference numeral 8 in the drawing denotes a shaft made of, for example, CFRP, which is different from the material of the head main body 1, and a mounting end portion 8a of the shaft 8 is inserted into a shaft insertion hole 7 provided in the shaft insertion member 4 and bonded. As a result, the shaft 8 is attached in the state shown in FIG.

In the above embodiment, two parts of the upper shell part 12 and the heel side end parts 12a, 13a of the upper shell part 12 and the remaining shell part 13 constituting each divided body of the head main body 1 are rod-shaped of the shaft inserting member 4. Although it is joined to the middle part of the body 5, three parts including the ball striking face shell portion 11 or only the heel side end portion 12a of the upper surface shell portion 12 may be joined.

[0018]

As is apparent from the above description, the present invention is a hollow body composed of three divided bodies of a ball striking face shell portion, an upper surface shell portion, and a remaining shell portion including a bottom surface shell portion and a peripheral side surface shell portion. A shaft inserting member is provided at the heel side base end of a head body having a simple metal outer shell structure, and at least the heel side end of the upper shell of each divided body is joined to an intermediate portion of the shaft inserting member. Therefore, it is possible to stabilize the joint strength between each divided body and the shaft insertion member, which facilitates the joining work and stabilizes the mounting direction.

Further, in the present invention, since the stopper for restricting the insertion depth of the shaft is provided inside the shaft insertion hole formed in the shaft insertion member,
The depth into which the shaft is inserted into the shaft insertion member is regulated, whereby the joining state thereof can be stabilized and the joining strength can be increased.

Further, when the shaft is attached to the head main body, the shaft can be attached to the head without directly welding because the shaft is inserted into the shaft inserting member and adhered.

By adjusting the weight of the shaft inserting member, the weight of the entire head can be easily adjusted.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts showing an embodiment of a wood club head for golf according to the present invention.

FIG. 2 is an exploded perspective view showing an assembled state of the head.

FIG. 3 is a cross-sectional view of essential parts showing an example of a conventional golf wood club head.

FIG. 4 is an exploded perspective view showing an assembled state of the head.

FIG. 5 is a cross-sectional view of essential parts showing another example of the conventional golf wood club head.

FIG. 6 is an exploded perspective view showing an assembled state of the head.

[Explanation of symbols]

1 ... Head body, 2 ... Heel side base end portion, 4 ...
-Shaft insertion member, 5 ... rod-shaped body, 6 ... locking portion, 7 ... shaft insertion hole, 7a ... stopper (hole bottom), 8 ... shaft, 8a ... mounting end Part, 1
1 ... Hitting surface shell portion, 12 ... Top surface shell portion, 12a ...
-Heel side end portion, 13 ... Remaining shell portion, 13a ... Heel side end portion, 14 ... Bottom shell portion, 15 ... Peripheral side shell portion, 16, 17 ... Notch joint portion .

Claims (2)

[Claims] 1. A head main body having a metal outer shell structure is formed by joining a head striking face shell portion, a top surface shell portion, and a remaining shell portion including a bottom surface shell portion and a peripheral side surface shell portion in a three-piece body, A golf wood club head having a shaft insertion member joined to the head body, wherein at least an upper surface shell portion of each of the divided bodies is joined at an intermediate portion in the length direction of the shaft insertion member. For wood club head. 2. The wood club head for golf according to claim 1, wherein a stopper for restricting the insertion depth of the shaft is provided inside the shaft insertion hole of the shaft insertion member.