JP2003169870A - Iron golf club - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an iron golf club provided with head structure with which hitting feeling in the case of hitting a ball can be controlled. <P>SOLUTION: A plurality of recess parts 8 are formed on the side of the rear surface of a face part 7 at the head part 1 of the iron golf club. The recess parts 8 open at the rear surface of the face part 7, and are extended toward the side of the face surface. A weight member 9 consisting of e.g. a tungsten screw, is fitted to each of these recess parts 8. Then, a cover plate 10 is fitted so as to cover the recess parts 8 and the weight members 9. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron golf club having a head portion having a structure capable of controlling the feel of impact.

[0002]

2. Description of the Related Art Conventionally, an iron golf club in which a weight such as lead is installed inside a neck portion of a head portion of an iron golf club or a balancer is attached to a sole portion of the head portion to control the weight of the head portion. Exists.

[0003]

However, in the conventional iron golf club, for example, a weight or a balancer is attached to the head portion in order to change the position of the center of gravity, and the feeling (hereinafter referred to as "striking") when hitting the ball is called. It was not possible to change the feeling.

The hit feeling is peculiar to each player because the taste of each player is involved, but depending on whether the hit feeling is good or bad, the swing may be disturbed and a miss shot may occur. Therefore, it is desired for players, especially advanced players, to control the feel.

SUMMARY OF THE INVENTION An object of the present invention is to provide an iron golf club provided with a head portion capable of controlling the feel of impact.

[0006]

An iron golf club according to the present invention comprises a head portion, and in one aspect, a plurality of concave portions for receiving a weight member on the back surface of the face portion of the head portion and the concave portions. And a cover plate.

By providing a plurality of recesses for receiving the weight members on the back surface of the face portion in this manner, a desired number of weight members can be mounted in the recesses. Thereby, the substantial thickness of the face portion can be adjusted, and the hit feeling can be controlled.

The recesses are preferably arranged in parallel in the direction from the toe part to the heel part of the head part, have an opening on the back surface of the face part, and extend in the direction toward the face surface.

As described above, by arranging a plurality of concave portions for receiving the weight member in the toe-heel direction from the toe portion to the heel portion of the head portion side by side, a desired number of concave portions at arbitrary positions in the toe-heel direction can be provided. A weight member can be attached. As a result, the hit feeling can be controlled and the center of gravity can be shifted in the toe / heel direction.

It is preferable that a threaded portion is formed on the outer circumference of the weight member, and a female threaded portion corresponding to the male threaded portion is formed on the inner circumference of the recess. As a result, the weight member can be screwed into the recess, and the displacement of the weight member and the slipping out of the recess can be suppressed.

In another aspect, the iron golf club according to the present invention has a head portion provided with a hit feeling adjusting portion for adjusting the hit feeling when hitting a ball on the face portion. By having such a hit feeling adjusting unit, the hit feeling can be controlled.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An iron golf club of the present invention has an important feature in that a face portion of a head portion is provided with a hit feeling adjusting portion for adjusting the hit feeling of a ball.

As an example of the hit feeling adjusting portion of the present invention, there may be mentioned, for example, a structure provided on the back surface of the face portion and including a plurality of recesses for receiving weight members. The recess may be provided at any position on the back surface of the face portion, but is preferably provided on the back surface side of the hitting portion (the portion having the maximum thickness or in the vicinity thereof) in the face portion. By mounting a desired number of weight members in the recesses, the substantial thickness of the hitting portion in the face portion can be adjusted,
You can control the feel.

It is preferable that a plurality of the recesses are arranged in parallel in the direction from the toe portion to the heel portion of the head portion. For example, it is conceivable to provide a plurality of concave portions near the sweet spot in the face portion at positions symmetrical with respect to the sweet spot. It is also conceivable to provide the same number (single or plural) of recesses on both sides of the sweet spot. The position of the center of gravity can be shifted in the toe-heel direction by appropriately adjusting the position and the number of the weight members mounted in the recesses.

Although any shape can be adopted as the shape of the recess, it is preferable that the opening shape of the recess be circular, for example. It is preferable that the opening of the recess is provided on the back surface of the face portion, and the recess extends in the direction from the back surface of the face portion toward the face surface, that is, the front-back direction of the head portion.

The recess may be a screw hole,
It may be a hole having any other inner peripheral surface shape. It is preferable to provide an engaging portion that engages with the weight member when the weight member is mounted on the inner circumference of the recess. Thereby, the weight member can be locked in the recess after the weight member is mounted, and the weight member can be prevented from slipping out of the recess.

For example, it is conceivable to form a thread portion on the outer circumference of the weight member and form a female thread portion corresponding to the male thread portion on the inner circumference of the recess. In this case, it is possible to screw the weight member into the recess, and it is possible to effectively prevent the weight member from slipping out of the recess while suppressing displacement of the weight member.

Further, it is possible to provide a cover plate for covering the recess, and in this case, it is possible to more reliably suppress the weight member from coming off and to improve the appearance. The cover plate may be made of a member having a predetermined rigidity or more, and is typically made of metal.

As the weight member, any material and shape can be adopted, but it is preferable to use a material having a higher specific gravity than that of the head main body. For example, when the head body is made of stainless steel, the weight member is made of a material having a high specific gravity such as tungsten. As the shape of the weight member, various shapes such as a round bar shape, a columnar shape or a cylindrical shape with a screw formed on the outer periphery, a rectangular parallelepiped shape, and a columnar shape having a polygonal cross section can be considered.

[0020]

EXAMPLES Examples of the present invention will be described below with reference to FIGS. FIG. 1 is a partial perspective view of an iron golf club according to one embodiment of the present invention. Figure 2
FIG. 2 is a cross-sectional view of the head unit 1 shown in FIG.

As shown in FIG. 1, the iron golf club of this embodiment includes a head portion 1, a shaft, and a grip (not shown). The head portion 1 includes a toe portion 2,
The top edge portion 3, the heel portion 4, the sole portion 5, the back portion 6, the face portion, and the cover plate 10 are provided.

As shown in FIG. 2, a concave portion 8 is provided so as to open on the back surface of the face portion 7 and extend to the face surface side, and a weight member 9 is attached to the concave portion 8. The face portion 7 is made of titanium or a titanium alloy, and the head portion main body other than the face portion 7 is made of stainless steel. In the example shown in FIG. 2, the recess 8 is a screw hole having a screw formed on the inner circumference, and a screw made of tungsten having a larger specific gravity than the head main body including the face 7 is used as the weight member 9.

The depth W1 of the recess 8 is about 5 mm to 15 mm, and the width W2 is about 3 mm to 15 mm.

FIG. 3A shows an example of the structure of the hit feeling adjusting portion of the present invention. As shown in this figure, four recesses 8 are arranged so as to be lined up in the toe-heel direction from the toe portion 2 to the heel portion 4.
Are provided at equal intervals. A desired number of weight members 9 are screwed into the four recesses 8.

At this time, the weight member 9 is placed in the recess 8 on the toe portion 2 side.
The center of gravity of the head portion 1 is moved to the toe portion 2 by screwing.
The center of gravity of the head portion 1 can be shifted to the heel portion 4 side by screwing the weight member 9 into the recess 8 on the heel portion 4 side.

In the example shown in FIG. 3, the weight member (tungsten screw) 9 shown in FIG. 3B is attached to the two central recesses (screw holes) 8. As shown in FIG. 3B, the weight member 9 in the present embodiment is a cylindrical screw and has a threaded portion formed on the outer circumference. The mass of the weight member 9 is, for example, about 2 to 8 g.

The length of the weight member 9 may be equal to the depth W1 of the recess 8 or may be smaller than the depth W1. By manufacturing the weight members 9 having various lengths, the weight members 9 can be mounted in various combinations, the variation of weight control is increased, and more delicate and delicate hit feeling adjustment can be performed.

On the other hand, the inner circumference of the recess 8 is preferably provided with a female screw portion. Thereby, the weight member 9 can be screwed into the recess 8. The female thread portion may be provided on at least a part of the inner circumference of the recess 8.

As shown in FIG. 3A, a counterbore is provided around the recess 8 and a cover plate (covering member) 10 is attached to the counterbore so as to cover all the recesses 8. The cover plate 10 has a substantially rectangular shape and is made of metal, and its surface is decorated.

Next, the inventor of the present invention conducted a test on the feel when actually hitting the golf club of the present invention. The results are shown in Table 1. In addition, the data shown in Table 1 shows that the golf club of the present invention having a head with no screw (screw 0 g) and a screw of 2 g are arranged on the inner two of the four recesses 8 shown in FIG. (Total screw mass 4g)
Fig. 3 shows a golf club having a head of 4g and a screw of 4g.
The results of trial hits by three advanced players when a golf club having heads (total screw mass 8 g) arranged on two outer sides of the four recesses 8 shown in (a) are used.

[0031]

[Table 1]

From the results shown in Table 1, it can be seen that, although there are some individual differences, many golfers judged that the hit feeling was improved by mounting the screw of the present invention.

Although the embodiments of the present invention have been described above, it should be considered that the embodiments and examples disclosed this time are exemplifications in all points and not restrictive. . The scope of the present invention is shown by the claims, and includes meanings equivalent to the claims and all modifications within the scope.

[0034]

According to the iron golf club of the present invention, since the hit feeling can be controlled, it is possible to adjust the hit feeling that each player prefers.
As a result, it is possible to reduce the uncomfortable feeling at the time of hitting the ball and reduce miss shots.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view taken along the line AA of the head portion shown in FIG.

3A is an enlarged perspective view of a hit feeling adjusting portion in the head portion of the present invention, and FIG. 3B is a perspective view showing a structural example of a weight member that can be mounted on the head portion of the present invention.

[Explanation of symbols]

1 head part, 2 toe part, 3 top edge part, 4
Heel part, 5 sole part, 6 back part, 7 face part, 8 concave part, 9 weight member, 10 cover plate.

Claims (4)

[Claims] 1. An iron golf club having a head portion (1), wherein the head portion (1) has a plurality of recesses (8) for receiving a weight member (9) on the back surface of the face portion (7). An iron golf club, comprising: a cover plate (10) covering the recess (8). 2. The recess (8) is provided in the head portion (1).
2. The method according to claim 1, wherein the toe portions (2) are arranged side by side in a direction from the toe portion (2) to the heel portion (4), the face portion (7) has an opening on the back surface, and extends in the direction toward the face surface. Iron golf club. 3. The screw member is formed on the outer circumference of the weight member (9), and the female screw portion corresponding to the male screw portion is formed on the inner circumference of the recess (8). The iron golf club described in. 4. An iron golf club comprising a head portion (1), wherein the head portion (1) adjusts the feel when hitting the face portion (7) with a ball. An iron golf club characterized by having a section.