JP2528038Y2 - Wood golf clubs - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood golf club, and more particularly, to a golf club in which a shaft hole penetrates to a sole portion so that the head weight can be easily adjusted and the appearance is improved. Wood Golf Club.

[0002]

2. Description of the Related Art As shown in FIGS. 9 and 10, a conventional wood golf club is assembled with a club head 1 and a shaft 2 such that a shaft hole 3 penetrates to a sole portion and the shaft 2 is opened. There are known two types, a case where the shaft hole 3 does not penetrate to the sole plate 4 and a case where the shaft hole 3 does not penetrate to the sole plate 4 as shown in FIG. I have.

[0003] Compared to the latter in which the shaft hole 3 does not penetrate up to the sole plate 4, the shaft hole 3 extends to the sole portion.
In the former case, the shaft 2 and the club head 1 are well integrated at the time of hitting the ball and the club head 1 has a greater penetration strength of the shaft 2 into the club head 1. This is preferable from the viewpoint of not only a small amount of torsion at the time of hitting the ball, but also a strength such as a detachment of the shaft 2 and a break of the neck portion 5.

Accordingly, it is considered that FIG. 10 is more preferable than FIG. 9 in which the opening 2 a of the shaft hole 3 is filled with the tail plug 6 and the shaft 2 is inserted. This is hosel part 7
This problem becomes more important in a club head having a shorter hosel portion 7 than a club head having a longer hosel portion.

[0005]

However, in the case of a wood golf club in which the shaft 2 penetrates the sole portion, the club head 1 is formed by cutting the shaft end portion after inserting the shaft 2 and polishing the sole portion. Therefore, the shaft 2 becomes a hindrance and is not suitable for mass production processing, and there is a problem that workability and productivity are poor.

[0006] The coating of the club head 1 is performed on the shaft 2.
This requires a lot of trouble and time since the insertion is performed, and there is a problem that the workability is extremely poor in the painting work.

[0007]

SUMMARY OF THE INVENTION The present invention has been devised in view of such conventional problems, and can easily adjust the weight of a club head, and can perform polishing and painting with a single club head. It is an object of the present invention to provide a wood golf club capable of obtaining a strength completely equal to or higher than that of penetrating the shaft after the shaft is inserted and significantly improving the workability and productivity of the club head. It is assumed that.

In order to achieve the above object, the present invention provides a small-diameter portion having an outer diameter substantially equal to the inner diameter of the tip of a shaft inserted into a shaft hole, and a large-diameter portion having an outer diameter substantially equal to the shaft hole diameter. And a bottom plug member integrally formed of the same metal material as the metal sole plate is fixed.

[0009]

[Effect of invention] This invention is constructed as described above, the adjustment of the weight of the club head by arbitrarily adjust the length of the length and the large diameter portion of the small diameter portion that make up the Shirisen member It can be done easily. Also, the sole plug member is made of the same metal material as the sole plate,
To increase the adhesive strength between the
After the construction, the boundaries between the two should be cut so that they cannot be visually identified.
Can be

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted. FIG. 1 is a front view of a club head 1 of a wood golf club of a no hosel type (a hosel portion 7 is short) in which the present invention is implemented.
FIG. 2 is a cross-sectional view taken along a plane passing through the center of the shaft 2 in FIG. 1 and being substantially parallel to the face portion 1a of the club head 1.
a.

Reference numeral 4 denotes a sole plate, 5 denotes a neck portion of the club head 1, and 7 denotes a hosel portion. The opening 3a on the sole side of the shaft hole 3 has
As shown in FIG. 3, a tail plug member 8 is attached. The tail plug member 8 is made of a metal material and has a cylindrical small-diameter portion 9 a having an outer diameter substantially the same as the inner diameter of the distal end of the shaft 2, and a shaft. It is integrally formed with a large diameter portion 9b having an outer diameter substantially the same as the diameter of the hole 3. As shown in FIG. 2, the length La of the cylindrical small-diameter portion 9a is less than the length Lb from the upper end portion of the club head 1 to the upper end portion of the hosel portion 7 of the club head 1 as shown in FIG. Yes, of course, small diameter part 9a
When the length La is longer, the integration with the shaft 2 is further strengthened.

As means for preventing and reinforcing the shaft 2 at the upper end of the hosel portion 7 of the club head 1, the length La of the small-diameter portion 9a is made smaller than the length Lb to the upper end portion of the hosel portion 7. It is also possible to increase the length of the hosel part 7 to the upper part. Metal material forming the buttocks member 8
Uses the same metal material as the sole plate 4 . As shown in FIG. 5, a cylindrical small-diameter portion 9a of the bottom plug member 8 is also provided.
By adjusting the length La and the length Lc of the large diameter portion 9b, the weight of the club head 1 can also be adjusted.

The length La of the small diameter portion 9a of the buttocks plug member 8
A plurality of pieces having different lengths Lc from the large diameter portion 9b may be prepared in advance, or the length La of the small diameter portion 9a and the length Lc of the large diameter portion 9b may be made longer in advance. Then, the lengths La and Lc may be cut each time according to the required weight. Further, by making the butt plug member 8 the same as the sole plate 4, the butt plug member 8 can be integrated with the sole plate 4 in appearance as shown in FIG .

The joining of the butt-plug member 8 and the shaft 2 is performed via an adhesive Q.
It is preferable to roughen the surface including the surface and both the inside and outside of the shaft of the shaft insertion portion with sandpaper or the like in order to improve the adhesive strength. 6 to 8 show a method of assembling the shaft 2 to the club head 1. First, as shown in FIG.
A tail plug member 8 made of a metal material having a predetermined weight is fixed to the shaft hole 3 penetrating through to the bottom with an adhesive. In the present invention
The sole plug member 8 and the sole plate 4 are made of the same metal material.
As a result, the adhesive strength can be increased . next,
After the adhesive has adhered and cured, as shown in FIG. 7, and polished Shirisen member 8 with the sole plate 4, finish the surface of the sole plate 4 side, but Shirisen member 8 and Sorupure
Since the sheet 4 is made of the same metal material, the boundary between the two is outside.
It is possible to make the color tone and others uniform so that they cannot be visually identified.
Wear. Then, as shown in FIG. 8, after the processing of the club head 1 is completed, the shaft 2 is inserted and fixed with an adhesive Q.

By such an assembling operation, the bottom plug member 8 is
The small-diameter portion 9a is fitted to the tip of the shaft 2, and the large-diameter portion 9b is fitted to the sole opening 3a of the shaft hole 3. Therefore, the machining is performed with the shaft 2 mounted on the club head 1. It is no longer necessary to grind the club head alone,
As a result, the strength of the joint between the shaft 2 and the club head 1 can be improved, and the processing and assembly of the club head 1 can be easily performed.

[0016]

According to the present invention, a small-diameter portion having an outer diameter substantially equal to the inner diameter of the tip of the shaft inserted into the shaft hole as described above, and a large-diameter portion having an outer diameter substantially equal to the shaft hole diameter are provided. The sole plug member, which is integrally formed of the same metal material as the sole plate, is fixed, so that the weight of the club head can be easily adjusted, and the club head can be polished and painted by itself, and the shaft After insertion, the same or higher strength as that of the shaft penetration can be obtained, and the workability and productivity of the club head can be significantly improved. Furthermore, since the butt plug member is made of the same metal material as the sole plate, the sole plate
The adhesion strength to the
After polishing, make sure that the boundary between them cannot be visually identified.
Therefore , the appearance can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a club head of a no hosel type wood golf club embodying the present invention.

FIG. 2 is a cross-sectional view taken along a plane passing through the center of the shaft of FIG. 1 and substantially parallel to a face portion of a club head.

FIG. 3 is an enlarged sectional view of a portion X in FIG. 2;

4 is a bottom view of the tail plug member of FIG. 3 as viewed from a sole plate side, that is, a bottom side of a club head.

FIG. 5 is a cross-sectional view of the buttocks member.

FIG. 6 is an explanatory diagram of an operation process for assembling a tail plug member and a shaft into a shaft hole.

FIG. 7 is an explanatory view of an operation process for assembling the tail plug member and the shaft into the shaft hole.

FIG. 8 is an explanatory view of an operation process for assembling the tail plug member and the shaft into the shaft hole.

FIG. 9 is a cross-sectional view of a shaft hole of a conventional wood golf club head, in which a sole plug member is packed in a sole opening of the shaft hole, and a shaft is inserted.

FIG. 10 is a cross-sectional view showing a state in which a shaft has been penetrated to a sole opening of a shaft hole of a conventional wood golf club head, and a butt plug has been inserted into a hollow portion of the shaft.

FIG. 11 is a cross-sectional view of a conventional wood golf club head in which a shaft hole is not opened in a sole portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Club head, 1a ... Face part, 2 Shaft 3 Shaft hole 3a Opening 4 Sole plate 4a Sole part 7 Hosel part 8 Butt plug member 9a Small diameter part 9b Large diameter part Q ... Adhesive

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal sole plate is provided on a sole portion.
The sole plate penetrated from the hosel part.
Open the shaft hole and insert and fix the shaft into the shaft hole
In the wood golf club adapted to perform
The shaft hole diameter on the side of the
Large diameter part having the same outer diameter and inner diameter of the shaft tip
And a small diameter portion having substantially the same outer diameter are integrally formed,
Buttocks made of the same metal material as the sole plate
After attaching the stopper member, the shuffling is performed from the hosel part side.
Wood golf with the shaft tip inserted and fixed in the hole
club.