JPH078582A - Head part of golf club - Google Patents

Abstract

PURPOSE: To solve the problems that a player is fatigued, a club head is easily damaged, and a life of a shaft is short, which are caused by the high reaction force at the hitting of a ball, because the whole head part of the shaft is solid. CONSTITUTION: A recessed part 11 of which the front and rear both sides are dovetail, is formed on a hitting face part of a head 10, a damping groove 12 is formed on an internal central part of the recessed part 11, and a fitting plate 20 comprising a wedge face 21 at the front and rear both edge parts, is fitted and fixed to the recessed part and the dovetail part 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club,
In particular, it relates to the head portion of a metal shaft.

[0002]

2. Description of the Related Art In a golf competition, from the 1st hole to the 18th hole, the number of hits is standard or less than the number of hits. You must grasp the direction and distance in advance. If you hit the wrong direction or the distance is not enough, you will lose more and more times.

If the player's technology is the same, the structure of the head is a deciding factor, so the player must carefully consider the direction and distance when hitting, the selection of the head and the use of the head number. I won't. The angle at which the ball is launched according to the number of the ball
This is because the directions and distances are all different.

In general, a metal shaft is selected in order to reduce the number of hits and achieve good results. There are 10 types of metal shafts, and the length of the shaft and the angle between the tip and the head are different. That is, since the distance and the direction in which each shaft can be launched are different, the shaft must be selected in consideration of the ball drop point and the target. (For example, the shaft of No. 1 flies the ball to 200 yards. The numbers of No. 2 and No. 3 are reduced by 10 yards each.) The ball drop point depends on the shaft length and input. Whether or not the falling point of the ball is appropriate depends on the striking surface of the head.

Conventional metal shaft heads are manufactured by precision casting. That is, the head of the shaft and the striking surface are integrally molded, and the tip portion thereof is finely finished and buffed (see FIG. 1).

Although the inside of the head of the shaft is solid, it requires that the striking surface be accurately centered on the ball and that the angle and input be balanced. Otherwise, you will not get the ideal drop point and correct direction results. Only a person who practices well can grasp this principle without fail.

If it deviates even a little, the drop point becomes another place, and the metal material has a high damage rate. If it falls on sand or gravel, it will damage the striking surface and shorten the life of the shaft. Moreover, there is a relationship between the input and the reaction force at the time of striking, and when the reaction force is strong, a fatigue phenomenon such as stiffness or numbness of the upper limbs occurs for the player.

[0008]

In the conventional golf ball head in which the striking face portion is integrally formed by precision casting, the inside of the head portion is the real body.
Since the reaction force is strong, it causes fatigue to the player, and it eliminates the disadvantage of high damage rate of metal material and relatively short shaft life, so that the player can play the ball at the planned point without fatigue. The purpose is to provide a club that can be dropped in flight.

[0009]

SUMMARY OF THE INVENTION According to the present invention, a striking face portion of a head is formed with a recess having front and rear side portions that are dovetail-shaped, and an absorbing groove is provided in the center of the inner side of the recessed portion. A plurality of fisheye holes are provided in the high head, and a part of the deep part of the fisheye hole is communicated with the dovetail-shaped portion of the recess, and a striking plate having wedge-shaped surfaces at both front and rear ends is formed into the recess and the dovetail. It is fixed by wedge-fitting to the portion, the inside of the fish-eye hole is filled with metal filling, and the wedge-shaped surface of the striking plate is reached and fixed.

[0010]

The impact of the hit ball on the striking plate is absorbed by the seismic absorption groove inside the head, and no reaction force against the hit ball occurs. Therefore, the ball accurately flies in the direction and distance aimed by the player and falls to a predetermined point.

Further, the striking plate does not loosen or fall off when the striking plate is fixed to the recess of the striking surface by applying the restraining fixing force of the metal filling packed in the fisheye hole.

[0012]

EXAMPLE A recess 11 is formed on the entire striking surface 9 of a head 10 in the form of wedge-shaped dovetails 15, 15 on both front and rear sides thereof.

A vibration absorbing groove 12 having substantially the same shape as the concave portion is provided at the center of the inside of the concave portion 11. That is, the recess 11
The inside of the striking plate 20, which will be described later, is kept hollow.

In the high head 14 on the striking surface side of the head 10,
A plurality of fisheye holes 13 ... Are provided. The fish-eye hole is constricted in the upper surface and then extends toward the inner part so that a part of the inner bottom part communicates with the dovetail-shaped part 15 of the recess 11.

To the recesses 11 and 11, striking plates 20 having wedge-shaped surfaces 21 and 21 to be wedged with the dovetail-shaped portions 15 and 15 are adhered and fixed at both front and rear ends. As the material of the striking plate 20, one having a higher hardness and a lighter weight than the material of the head 10 is used, but titanium is preferable, for example.

The inside of each of the fisheye holes 13 is filled with a relatively soft metal filling 16 such as a copper alloy. As a result, the metal filling 16 reaches the wedge-shaped surface 21 of the striking plate 20 at its inner portion and is fixed under pressure.

[0017]

As described above, firstly, since the reaction force generated by the impact on the striking plate generated for each hit ball can be sufficiently absorbed therein, the flight direction and the distance of the ball are set and dropped according to the player's plan. It is possible to reduce player fatigue by half.

Secondly, the striking plate is not only fixed in the recess of the head, but also is prevented from being pressurized by the metal filling packed in the fisheye hole, so that the striking plate relaxes or comes off during use. There is nothing to do.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a conventional product.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is a perspective view of an essential part of the present invention.

FIG. 4 is a transverse cross-sectional view of a central portion of the main portion of the present invention during assembly.

FIG. 5 is an enlarged cross-sectional view of FIG. 4B part.

FIG. 6 is a sectional view taken along line C-C of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Head 11 Hitting surface concave portion 12 Absorbing groove 13 Fisheye hole 15 Dovetail portion 16 Metal filling 20 Hitting plate 21 Wedge surface portion

Claims (2)

[Claims] 1. A striking plate in which a front and rear both sides of the head are formed with a dovetail-shaped concave portion, a shock absorbing groove is provided in the center of the inner side of the concave portion, and wedge-shaped surfaces are formed at both front and rear ends. A head portion of a golf club, wherein the head portion is formed by wedge-fitting the concave portion and the dovetail portion. 2. A striking face portion of the head is formed with a recess whose front and rear sides are dovetail-shaped, and an absorption groove is provided in the center of the inside of this recess, and a plurality of fisheyes are provided in the high head of the striking face portion. A hole is provided and a part of the deep part of the fisheye hole is communicated with the dovetail-shaped portion of the recess, and striking plates having wedge-shaped surfaces at both front and rear ends are wedge-fitted to the recess and the dovetail-shaped portion to be fixedly bonded. The golf club head portion is characterized in that a metal filler is filled in the fisheye hole and reaches the wedge-shaped surface of the striking plate to be fixed.