JP2000325506A - Head for golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head for a golf club which enables a golfer to increase the distance of a ball and enables a golfer having various habits to correct his or her ball directivity. SOLUTION: This head for the golf club consists of a hollow metallic head body 1 formed of titanium or other light alloy, etc., and a metallic face part 2 and is formed by fixing a weight 3 consisting of metal, such as titanium, or other materials, such as a resin, to the suitable position on the periphery of the sweat spot at the rear surface of the face part 2.

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 having a metal outer shell.

[0002]

2. Description of the Related Art Conventionally, metal wood is a hollow golf club head body in which a plurality of metal shell pieces are integrally joined.
In some cases, the face of a metal plate was welded. Also,
In some golf club heads, the main body side is integrally formed by casting, plastic working, or the like, and a face portion of a metal plate material that is a uniform plate material is welded to the front opening. Therefore, since the face portion is formed with a constant thickness, a two-dot chain line 4 indicating the maximum amplitude of the face portion 2 provided in the opening of the head body 1 at the time of impact as shown in FIG. In the range of the sweet spot of the face part 2, it was almost constant.

[0003]

In the golf club head of the prior art, since the face portion 2 is uniform, the amplitude of the face portion at the time of impact is substantially constant over the entire surface. For this reason, some golfers have a hard habit of swinging, and although the swing is almost correct, the direction of the face surface of the head main body is slightly shifted, so that a so-called habit ball cannot be corrected. Therefore, it has conventionally been difficult to correct the ball muscle of a golfer having such a habit ball. Further, it was difficult to extend the flight distance of the ball with the same face portion material.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and provides a golf club head capable of extending the flight distance of a ball and correcting the ball muscle of a golfer having various habits. The purpose is to do.

[0005]

The present invention relates to a golf club head comprising a metal hollow head main body made of titanium or other light alloys, and a metal face portion. A golf club head in which a weight made of a material such as a metal such as titanium or other resin is fixed around a sweet spot on a back surface of a face portion.

The weight is a golf club head fixed above the sweet spot center of the face portion. Alternatively, the weight is a golf club head fixed below the sweet spot center of the face portion.

The weight is fixed to the toe side of the golf club head with respect to the center of the sweet spot of the face portion, or the heel of the golf club head is fixed with respect to the center of the sweet spot of the face portion. It is a golf club head fixed to the side.

According to the golf club head of the present invention, a weight made of a material such as metal such as titanium or other resin is fixed around the sweet spot on the back surface of the face portion, and the face at the time of impact is determined by the fixing position of the weight. The direction of the vibrating surface is adjusted so that the direction of the hit ball can be adjusted.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a golf club head according to a first embodiment of the present invention.
It comprises a hollow head body 1 formed by welding a metal shell such as titanium or other light alloy, and a metal face portion 2 such as forged titanium. At the center 20 of the sweet spot on the back surface of the face portion 2, a weight 3 made of a material such as a metal plate such as titanium or other resin is fixed.

The weight 3 has a face portion 2 made of titanium.
To weld a metal weight, a titanium material is welded. Further, a resin may be bonded as the weight 3, and the type and size of the weight can be set as appropriate.

The function of the golf club head according to this embodiment is that the vibration of the face portion 2 of the head main body 1 at the time of impact of the ball has a weight as shown by a line 4 in FIG. 3, the amplitude is larger than that of the face portion 2 without weight shown in FIG. In particular, the maximum amplitude at the sweet spot center 20 of the face surface 2 becomes large, and as shown in FIG. 3, the flight distance of the ball can be greatly extended.

Next, a golf club head according to a second embodiment of the present invention will be described with reference to FIGS.
Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The golf club head of this embodiment has a sweet spot center 20 on the back surface of the face portion 2.
The weight 3 is provided on the upper part of the.

According to the golf club head of this embodiment, by fixing the weight 3 to the upper portion of the face portion 2, as shown in FIG. It becomes maximum at the portion of the weight 3 and vibrates greatly on the vibrating surface of the hitting portion of the face portion 2 so as to approach the vertical direction when hitting the ball. As a result, an effect of suppressing the backspin on the ball 5 and exerting an overspin is exerted, and the ball 5 has a low trajectory 7 and a long run.

Therefore, the golf club head according to this embodiment corrects the trajectory of a golfer who has a tendency to hit a ball higher to a lower trajectory, and earns a run to extend the flight distance.

Next, a golf club head according to a third embodiment of the present invention will be described with reference to FIGS.
Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. The golf club head of this embodiment has a sweet spot center 20 on the back surface of the face portion 2.
Is provided with a weight 3 at the lower part of.

According to the golf club head of this embodiment, by fixing the weight 3 to the lower portion of the face portion 2, as shown in FIG. The weight 3 is maximum, and the vibrating surface of the hitting portion of the face portion 2 becomes slanted when hitting the ball, and acts to increase the loft angle. As a result, the ball 5 rises at a steeper angle, and a larger backspin is given, which has the effect of increasing the trajectory 7.

Accordingly, the golf club head according to this embodiment corrects the trajectory of a golfer whose hit ball does not rise and the flight distance does not extend to a higher trajectory, thereby extending the flight distance.

Next, a golf club head according to a fourth embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the golf club head of this embodiment, a weight 3 is provided on the toe side of the sweet spot center 20 on the back surface of the face portion 2. The position of the weight 3 may be an upper portion or a lower portion on the toe side, and can be appropriately selected. The upper part and the lower part are selected as in the above two embodiments.

According to the golf club head of this embodiment, as shown in FIG. 10, when the trajectory 9 tends to be sliced, the vibrating surface of the hitting portion of the face portion 2 is indicated by a two-dot chain line 8. In addition, the maximum amplitude is generated near the toe of the face portion 2, and even in the hitting state of the slicing tendency, the vibration surface becomes like a hook, and the slicing tendency is corrected to be straight as shown by the corrected trajectory 10. Hitting direction.

Particularly, as shown by a trajectory 9a indicated by a two-dot chain line in FIG. 9, for a golfer who tends to hit easily and tends to slice, it is preferable that the weight 3 is fixed to the upper portion of the back surface of the face portion 2 on the toe side. In addition, in the case of a golfer who does not hit the ball and tends to slice, the weight 3 may be fixed to the lower portion of the back surface of the face portion 2 on the toe side.

Next, a golf club head according to a fifth embodiment of the present invention will be described with reference to FIGS. Here, the same members as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the golf club head of this embodiment, a weight 3 is provided on the heel side of the sweet spot center 20 on the back surface of the face portion 2. The position of the weight 3 may be at the upper portion or the lower portion on the heel side, but is preferably provided at the lower portion.

According to the golf club head of this embodiment, as shown in FIG. 13, when the trajectory 9 tends to be hook-like, the vibrating surface of the hitting portion of the face portion 2 is indicated by a two-dot chain line 8. In addition, the maximum amplitude is generated near the heel of the face portion 2, and even in the hitting state with the tendency of hooking, the vibration surface becomes like a slice, so that the hooking tendency is corrected, and the straightness is corrected as shown by the modified trajectory 10. Hitting direction.

Particularly, as shown by the trajectory 9a shown by the two-dot chain line in FIG.
It is preferable that the weight 3 is fixed to the lower part on the heel side of the back surface of the face portion 2.

The weight to be attached to the face surface of the golf club head of the present invention can be of an appropriate size and an appropriate material can be selected. The fixing method can also be welding such as spot welding, resin or metal. They can be fixed by an adhesive, bonded with a melted resin, or sold by selecting an appropriate method.

[0025]

According to the golf club head of the present invention, a golfer's ball having various quirks and characteristics can be modified so as to eliminate the quirks and the like so that a longer flight distance can be obtained.

Further, even for a normal golfer without a habit, the flight distance can be further extended by fixing the weight to the sweet spot.

[Brief description of the drawings]

FIG. 1 is a longitudinal cross-sectional view schematically illustrating the magnitude of amplitude when a face portion is hit with a ball in a golf club head according to a first embodiment of the present invention.

FIG. 2 is a front view of the golf club head according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of the golf club head of FIG. 2;

FIG. 4 is a front view of a golf club head according to a second embodiment of the present invention.

5 is a sectional view of the golf club head of FIG. 4 taken along line BB.

FIG. 6 is a front view of a golf club head according to a third embodiment of the present invention.

7 is a cross-sectional view of the golf club head of FIG. 6 taken along line CC.

FIG. 8 is a front view of a golf club head according to a fourth embodiment of the present invention.

9 is a cross-sectional view of the golf club head of FIG. 9 taken along the line DD.

FIG. 10 is an illustration of the golf club head of FIG.
It is E sectional drawing.

FIG. 11 is a front view of a golf club head according to a fifth embodiment of the present invention.

12 is a cross-sectional view of the golf club head of FIG. 11, taken along line FF.

FIG. 13 is a graph G representing the vibration of the face and the trajectory of the ball in the golf club head of FIG. 10;
It is a G line sectional view.

FIG. 14 is a longitudinal cross-sectional view schematically illustrating the magnitude of amplitude at the time of hitting a face portion in a conventional golf club head.

[Explanation of symbols]

 1 Head body 2 Face part 3 Weight 5 Ball 7 Ballistic 20 Center of sweet spot

Claims (5)

[Claims] 1. A golf club head comprising a metal hollow head main body and a metal face portion, wherein a weight is fixed around a sweet spot on a back surface of the face portion. For head. 2. The golf club head according to claim 1, wherein the weight is fixed above the center of the sweet spot of the face portion. 3. The golf club head according to claim 1, wherein the weight is fixed below the center of the sweet spot of the face portion. 4. The golf club head according to claim 1, wherein the weight is fixed to a toe side of the golf club head with respect to a center of a sweet spot of the face portion. 5. The golf club head according to claim 1, wherein the weight is fixed to a heel side of the golf club head with respect to a center of a sweet spot of the face portion.