JP2002165909A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf club head capable of giving a good distance and direction, minimizing sliding phenomenon, applying an accurate spin to a ball, and preventing large deterioration of ball quality even when a slight miss shot occurs. SOLUTION: A plurality of recessed grooves 20 are arranged longitudinally and laterally at a constant interval in an alignment state where longitudinal rows and lateral rows have zig-zag configurations on the entire surface of a face 18 of the club head 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head, and more particularly to a club face (Fa) which forms part of an iron club or a wood club.
The present invention relates to a golf club head in which the shape of a groove formed in ce) is epoch-making and can greatly improve the function of the golf club.

[0002]

2. Description of the Related Art Well-known iron clubs and wood clubs have a contrivance for preventing slippage at the moment when the ball touches the face during a swing impact. In particular, in the case of an iron club, in order to stop the ball that has been on-lined without running, and to make the backspin work well, a straight line in the horizontal direction of the face surface as shown in FIG. The upper groove is recessed.

[0003] However, golfers, whether professional or amateur, are most concerned with the direction of the ball and the distance traveled by the golfer, and at the same time, are also the most problematic and dissatisfied parts. In the case of a professional golfer, the flight distance control is considered in view of the current golf course length.
Although there is almost no problem with golf, any professional golfer
However, there are many complaints about the direction of the ball and the fact that the ball that has been turned on does not stop at the desired position.

Further, for amateur golfers,
Dissatisfaction with the orientation of the ball before on-line is the biggest problem. The directionality of the ball is divided into straight spheres, hook spheres, and slice spheres.
A straight sphere can be obtained only when the hitting position of the timing face at the time of stable swing and impact is the most ideal. The hook sphere may not be properly set up, or if the club head is quickly twisted in a left-turned state, the club face and the ball may be disturbed.
It is caused by the sliding phenomenon at the time of contact between The slicing spheres are also caused by a problem with the setup and a phenomenon that occurs when the club face comes into contact with the ball in a right-turned state.

The problem of the conventional club head is caused by the fact that straight grooves formed in the face surface are formed in the horizontal direction. At the moment when the ball comes into contact with the club head surface at the time of impact, the phenomenon that the ball slides up and down by the groove formed in the horizontal direction can be prevented to some extent, and the action of giving the ball spin by the groove. However, it is not possible to prevent the ball from sliding outside or inside the face.

Of course, at the time of the swing, all the conditions are performed in the best condition, the ball is impacted at the sweet spot of the face (Sweet spot: the center point of the face), and the target point is set. When the ball and the face are squared, a shot with good sphere quality is possible. However, when the sweet spot slightly deviates in any of up, down, left and right directions, or when the target and the club face If the ball is not at a right angle to the ball, a slip phenomenon occurs and the ball's flying direction becomes worse.

There is also a problem that spin cannot be effectively given to a ball only by a linear groove. Various products using the head weight distribution direction method have been developed to improve such hook-like spheres and slice-like spheres.
The effect was extremely fine and its utilization was low. In the case of a conventional iron club, the club show
In the case of toy iron (7th, 8th, 9th) and wedge (pitching wedge, sand wedge) clubs, the loft is large, so the backspin is relatively good and the effect of stopping at the drop point increases, but the middle iron and the In the case of long irons, the backspin effect was greatly reduced due to the small angle of the loft, and on-green failure often occurred.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to obtain a good flight distance and directionality, and to reduce a slip phenomenon. Provided is a golf club head capable of preventing as much as possible, giving a correct spin to a ball, and preventing the sphere quality of the ball from being greatly deteriorated even when a slight miss shot occurs. That is.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention comprises a neck into which a club shaft is inserted, a sole on a bottom surface, a top edge on a top surface, and a face. In a golf club head, a plurality of substantially circular concave grooves having a predetermined size are formed in a face.

Here, the arrangement of the vertical and horizontal rows of the grooves is as follows.
The grooves may be arranged in a zigzag or linear shape, and the shape of the groove may be a perfect circle or an ellipse.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a golf club head according to an embodiment of the present invention, and FIG.
FIG. 2 is a sectional view taken along line AA of FIG. As shown
A groove 20 is formed in the entire face 18 of the club head 10. By arranging the concave grooves 20 at regular intervals in the vertical and horizontal directions, it is possible to effectively prevent the ball from sliding left and right or up and down when it comes into contact with the face 18.

Also, in order to improve the directionality of the ball, dimples (Dim) are formed on the entire surface of the golf ball.
ple) is formed. When the circular groove 20 of the present embodiment comes into contact with the surface of the ball without dimples, the effect of preventing slippage is further enhanced, and as a result, the ball is prevented from slipping.
By increasing the contact surface between the surface of the club and the club face, the slip phenomenon is reduced, and the hook-like sphere and the slice-like sphere are greatly improved.

Further, at the time of a swing impact, the impact is reduced due to the anti-slip effect, the hit feeling (feel transmitted to the hand at the moment of impact) is further softened, and a ball of good sphere quality can be made to fly in a desired direction. Become so.

Also, at the time of impact, the contact surface between the ball and the face is enlarged, so that the time for which the ball stays at the face is increased and the directivity is improved. In the case of iron, the spin effect is greatly improved.

FIG. 3A shows an embodiment of the present invention. The arrangement of the vertical and horizontal circular grooves 20 is zigzag, and the upper, lower, left and right circular grooves 20 intersect each other, so that the slip prevention effect is further improved.

FIG. 3B shows another embodiment of the present invention.
The arrangement of the vertical and horizontal rows of the circular grooves 20 is linearly arranged, whereby the number of the circular grooves 20 contacting the ball surface increases. A comparative experiment with a zigzag arrangement showed that although the directionality of the balls was a slight difference, the spin effect was excellent, although it was slightly inferior.

The inventor specially manufactured an iron-club according to the embodiment of the present invention, and performed a test hitting practice at a golf driving range and a golf course in order to compare the function with an existing iron-club. It was found that there was a large difference between the directionality and spin action.

A comparative test hit was performed with the 7-iron according to the embodiment of the present invention and the existing 7-iron, and the position of the ball dropped to the 150 yard point was confirmed. As a result, in the existing club, except for the ball falling to the target point on the straight line, the drop point of the hook ball and the slicing ball is the center line connecting the bat position and the target point. Of about 20 yards. On the other hand, when the iron according to the embodiment of the present invention is used, 10 to the left and right from the center line is used.
It was confirmed that there was no ball deviated from the yard.

Further, the test hits were compared in actual rounding under the same conditions for the fairway and the green.
The seventh iron according to the embodiment of the present invention, whereas the ball that has been greened has rolled a considerable distance from the drop point when using the existing 7 iron club. -When using a club, it is confirmed that the ball stops very close to the point of fall.

Although the preferred embodiment of the golf club head according to the present invention has been described with reference to the accompanying drawings, the present invention is not limited to such an example. It is obvious that those skilled in the art can conceive various changes or modifications within the scope of the technical idea described in the claims, and these naturally belong to the technical scope of the present invention. Is understood.

For example, in the above embodiment, the case where the circular groove is applied to the 7th iron-club has been described as an example, but the present invention is not limited to this example. In addition to this, it is needless to say that the groove of the face can be applied to the elliptical shape as shown in FIG. 4 and the circular groove can be applied to the wood-club head as shown in FIG. No.

[0022]

As described in detail above, according to the present invention, a good flight distance and directionality can be obtained, a slip phenomenon can be prevented as much as possible, and an accurate spin can be applied to the ball. The golf club head can be provided so that even if a slight miss shot occurs, the ball quality is not significantly deteriorated.

That is, it is possible to solve the problem of the directionality, which is a golfer's request, more than the swing technique, and it is possible to greatly improve the difficulty of making full use of the spin ball simply by selecting a simple club. .

Further, according to the present invention, an increase in manufacturing cost can be avoided because the structure is very simple in manufacturing and production.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view of a club head showing another embodiment of the present invention.

FIG. 4 is a front view of a club head in which a concave groove of a face is applied in an elliptical shape according to an embodiment of the present invention.

FIG. 5 is a perspective view of a wood to which an embodiment of the present invention is applied;
It is a front view of a club head.

FIG. 6 is a front view of a conventional golf club.

[Explanation of symbols]

 10: Club head 12: Neck 14: Sol 16: Top edge 18: Face 20: Circular groove

Claims (3)

[Claims] 1. A neck into which a club shaft is inserted,
In a golf club head having a bottom surface, a top edge, and a face, a plurality of substantially circular grooves having a predetermined size are formed in the face. head. 2. The golf club head according to claim 1, wherein the rows and columns of the grooves are arranged in a zigzag pattern. 3. The golf club head according to claim 1, wherein the rows and columns of the grooves are arranged linearly.