JPH06142237A - Golf club - Google Patents

Abstract

PURPOSE:To lower air resistance acting on a club head for increasing a head speed and a carry, and improving the directivity if a ball. CONSTITUTION:A club head at the lower end of a golf club is provided with through-holes 4, 4a and so forth, and a part of the air hitting a face during a swing motion is thereby caused to flow toward a back face. As a result, air resistance acting on the face is reduced, and a vacuum condition formed on the back face is alleviated, thereby reducing a turbulent flow and increasing a head speed. At the same time, the club head can be made to follow an ideal swing locus, due to the air flowing through the holes 4, 4a and so forth, thereby improving the directivity of a ball.

Description

Detailed Description of the Invention

[0001]

The present invention relates to general golfers, professionals,
The present invention relates to a golf club that can obtain a desired high head speed regardless of age or sex and has excellent ball directionality.

[0002]

2. Description of the Related Art Conventionally, vertical lines and face lines are engraved on the face surface of a club head in a golf club, but these are mainly for spinning a ball, and the face surface is substantially flat. Therefore, the air resistance applied to the face surface especially during downswing increases, and the air flowing on the face surface flows into the back face side under negative pressure to generate turbulence, which slows the head speed. It was a cause that the flight distance of the ball did not extend.

Further, it is predicted that the golfer population is currently increasing and will be increased in the future, and the common desire of various golfers is to increase the flight distance, and to achieve this desire. For this reason, it is necessary to devise ways to increase the head speed.For this reason, if the club head is made lighter, the club head becomes smaller and the face surface becomes narrower, which makes it difficult to accurately catch the ball. The club head needs to have a minimum size so that the face surface can accurately catch the ball, and accordingly the weight of the club head is determined. In order to catch the ball and get an accurate shot, the club head becomes larger and heavier by that amount,
It had a drawback that the head speed became slow and the flight distance of the ball was not extended.

[0004]

SUMMARY OF THE INVENTION According to the present invention, the air resistance applied to the face surface is reduced, the turbulent flow on the back face side is prevented from occurring, and the swinging of the club head is improved, so that the face surface is large. By reducing the weight of the club head, it is intended to provide a golf club in which the head speed is increased and the flight distance of the ball is extended.

[0005]

SUMMARY OF THE INVENTION The present invention is based on the above-mentioned prior art, and in view of the problem that the head speed becomes slow and the flight distance of the ball decreases due to the air resistance applied to the face surface and the turbulent flow on the back face side. A through hole is provided in the front-back direction of the club head, and a part of the air hitting the face surface is caused to flow to the back face side by the through hole, so that air resistance to the face surface is reduced and the back flow is caused by the air flow from the through hole. The above drawbacks are not solved by reducing the negative pressure state on the face side to reduce turbulence and reducing the weight of a club head having a large face surface.

[0006]

According to the present invention, a part of the air hitting the face surface passes through the through hole and flows to the back face side during the swing, thereby reducing the air resistance applied to the face surface and at the same time, Negative pressure is alleviated, turbulence is reduced and head speed is increased, and the through-hole allows the club head to be placed on an ideal trajectory and the ball to be accurately captured for accurate directionality. Depending on the direction, the club head is placed on a trajectory for hitting a straight ball, a hook ball, or a slice ball.

Further, the through hole is tapered or a thread is provided on the inner peripheral surface to accelerate the air passing through the through hole to further alleviate the negative pressure condition on the back face side and further increase the head speed. To do.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a club head of a golf club according to the present invention, the club head 1 being closer to a back face 3 side than a front face surface 2 on the rear side. Are horizontally provided with a large number of through holes 4, 4a ... At right angles to the face surface 2, or from the toe side to the heel side of the club head 1 and vice versa. It is inclined to the toe side by a predetermined angle.

Since the flight distance, the spin amount, and the direction change even if grass is caught between the ball and the face surface 2, the through holes 4, 4a ... Are located in the sweet area substantially in the center of the face surface 2. It is desirable to provide it in the part except 5.

Further, the through holes 4, 4a ... May be tapered so that the diameter thereof gradually decreases or expands rearward, or the thread 6 may be provided on the inner peripheral surface.

Next, the operation of the golf club according to the present invention will be described. During the downswing, especially during downswing where the head speed is required, the face surface 2
A portion of the air hitting the back face 3 passes through the through-holes 4, 4a ... To the back face 3 side, and the air resistance to the face surface 2 is reduced. The turbulent flow generated on the side is reduced, and as a result, the air resistance is reduced on both the face surface 2 and the back face 3 sides, and the head speed is increased.

Further, the club head 1 stably rides on the ideal trajectory by the through holes 4, 4a, ..., By accurately catching the ball, the ball flies in the intended direction, and the through hole 4, 4a. If 4a is perpendicular to the face surface 2, it is a straight ball, if it is inclined from the toe side to the heel side of the club head 1, it is a hook ball, and if it is inclined from the heel side to the toe side, it is a slice ball.

Further, the through holes 4, 4a ... Are tapered or the inner peripheral surface is provided with a thread 6, so that the through holes 4, 4a.
Accelerates the flow of air passing through the back face 3
The turbulence on the side is further reduced.

[0014]

In summary, according to the present invention, since the through holes 4, 4a ... Are provided in the front and rear direction of the club head 1, a part of the air hitting the face surface 2 passes through the through holes 4, 4a. The air resistance on the vehicle is reduced and the through holes 4, 4a
Since the air that has passed through ... relaxes the negative pressure state on the back face 3 side and reduces the turbulence, the air resistance applied to the club head 1 is reduced and the club head 1 swings well, and the through hole By providing 4, 4a ..., the club head 1 having a large face surface 2 can be reduced in weight, thereby increasing the head speed and easily catching the ball accurately and extending the flight distance. And, the fun of golf is further enhanced by compensating the weakness of women and increasing the flight distance.

Further, since the club head 1 can be placed on an ideal trajectory by the flow of air passing through the through holes 4, 4a ..., The ball can be accurately caught and the directionality of the ball is improved. Also, the sound generated when the air escapes into the through holes 4, 4a ... Is pleasant, and the head speed can be confirmed by the magnitude or height of the generated sound.

If the through holes 4, 4a ... Are perpendicular to the face surface 2, a straight ball is used. If the toe side of the club head 1 is inclined from the heel side to a hook ball, the heel side is inclined from the toe side. If you do so, the club head 1 can be placed on the trajectory that will become a slice ball, so if you are a player who suffers from a slice ball, use the former golf club, and if you have a hook ball, use the latter golf club to make a straighter ball. Can be corrected to a close flight line.

Further, since the through holes 4, 4a ... Are provided on the face surface 2 except the sweet area 5, there is a high possibility that the presence of the through holes 4, 4a. It is possible to completely prevent such things as entering and protruding from the face surface 2 and affecting the ball.

Since the through holes 4, 4a ... Are tapered or the through holes 4, 4a ... Are provided with the thread 6, the air passing through the through holes 4, 4a. Since the air flows to the side, the turbulent flow on the back face 3 side is further reduced, so that the air resistance applied to the club head 1 is further reduced and the head speed is further increased, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a front view of a golf club according to the present invention.

FIG. 2 is a front view of an iron club head.

FIG. 3 is a front view of a wood club head.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is an enlarged cross-sectional view of a club head having a tapered through hole.

FIG. 6 is an enlarged sectional view of a club head having a through hole provided with a thread.

FIG. 7 is a plan view of a club head in which the axis of the through hole is inclined.

[Explanation of symbols]

 1 club head 2 face surface 4, 4a ... through hole 5 sweet area 6 screw

Claims (4)

[Claims] 1. A golf club characterized in that a through hole is provided in the front-rear direction of the club head. 2. The golf club according to claim 1, wherein the through hole is provided in a portion of the face surface excluding the sweet area. 3. The golf club according to claim 1, wherein the through hole has a tapered shape. 4. A golf club according to claim 1, 2 or 3, wherein a thread is provided in the through hole.