JPS6048760A - Curing of ball hitting surface of head for wood of golf cluband wood head - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Although compressed materials and various types of wood are used for golf club wood heads (hereinafter simply referred to as heads),
Due to restrictions such as the weight, hardness, color, and workability of the wood,
Over the years, it has become known that the best head is one made entirely of bar material.

By the way, the ball hitting surface of the head is easily damaged due to severe wear due to impact with the ball, so in order to make the ball hitting surface durable, conventional heads have a synthetic resin or other material that is different from the bar material of the head body on the ball hitting surface. A hard insert made of metal or the like is installed to protect the ball hitting surface of the head and extend the life of the head. Therefore, although the insert makes the ball hitting surface of the head stronger, on the other hand, it significantly impairs the natural properties of the bar material that is the material of the head body, sacrificing important things such as ball flight distance and feel. has become lost.

In other words, with conventional heads that have an insert made of synthetic resin or metal attached to the ball-hitting surface of the head, if the insert is hard and thick, the insert does not protect the ball-hitting surface of the head well during impact with the ball. It can withstand the impact of the ball well, but as shown in Figure 5, the impact force of the ball (a) is transmitted to the insert (b) and spread over its entire surface, making the insert 1-(b) a type of buffer. Shockwaves spread from the entire surface of the insert (B) impact the head body (
C) is transmitted throughout.

Therefore, the fJ impact force of the ball is not concentrated in one point, and the shock wave does not pass through the bar head body in a spot shape, but instead passes through in a diffused manner.
The impact force of the ball is only reflected by the surface of the insert, and the characteristic reaction of the bar material in the head body becomes extremely small, eliminating the characteristic of using the bar material in the head body, giving the player a subtle sense of feedback. The ring does not transmit the impact force, and the ball's flight distance is reduced due to the spread of the ball's impact force.

Therefore, in order to eliminate the above-mentioned defects, the present invention eliminates the need to attach an insert different from the bar material to the ball-hitting surface of the head body made of a bar material as in the past, and the ball-striking surface is made of the same material as the bar material of the head body. Then, a penetrating hardening liquid is infiltrated only into the ball hitting surface of the head body to form a thin hardened layer on the ball hitting surface of the head body, and the hardened layer protects the ball hitting surface of the head body. The natural characteristics of the ball act effectively, and the impact force of the impact of the ball on the ball hitting surface of the head body is transmitted to the head body in a spot shape, which repels the ball with a very strong force and increases the flight distance of the ball. The present invention relates to a method for curing the ball hitting surface of a wood head for a golf tap, which is characterized by being able to stretch and provide a comfortable feeling, and to the wood head.

To explain the structure of one embodiment of the present invention shown in FIGS. 1 to 4, (a) shows a wood head for a golf club, (1) shows the head body of the head (a),
Manufactured from bar material. (2) is a thin hardened layer on the ball hitting surface, (3) is a shallow distorted tapered recess for forming the hardened layer (2), and (4) is hardened material built up inside the tapered recess (3). The agent (5) is a ball.

Next, a method for manufacturing the head will be explained.

(1) A large number of shallow taper recesses (3) with a depth of about 2 to 3 mm are arranged in parallel at appropriate small intervals on the ball hitting surface of the head body (1). At that time, the tapered recess (
3) The total volume and the volume of the xylem should be about the same.

(2) When a permeable hardening liquid is injected into the tapered recess (31), the hardening liquid flows from the surface of the tapered recess (3) to the rod of the head body (1), as shown in Fig. 4. It uniformly penetrates into the capillary pores along the ball-hitting surface and hardens, forming a 2-3 m thick layer (1) approximately the same depth as the taper recess (3) on the ball-hitting surface of the head body (I). A thin hardened layer (2) is formed.

(3) A hardening agent (4) of the same quality as the hardening liquid (a thick one of the same hardening liquid) is injected several times into the taper recess (3) and built up, and then the hardening agent ( 4) Smooth the surface so that it matches the surface of the hardened layer (2) of the head body (11).

Then, a large number of tapered hardeners (4) are embedded in the bar head body (1) at appropriate small intervals, and the ball hitting surface portion of the hardened layer (2) is formed with a thin and strong hardening layer (1). A head (a) with a durable ball-hitting surface is produced.

Note that the tapered recess (3) may have a conical shape or the like instead of the distorted shape described above.

Since the golf tap wood head of the present invention is manufactured as described above, the permeable curing liquid can properly and well penetrate into the capillary pores along the ball hitting surface of the wooden part of the head body from within the numerous tapered recesses. When cured, a thin, hard, and homogeneous hardened layer made of the rod and hardening liquid can be formed on the ball hitting surface of the head body.
In addition, by filling the inside of the tapered recess with a hardening agent of the same quality as the hardening liquid, the ball hitting surface of the head body becomes smooth, and a large number of taper hardening agents form part of the hardening layer, making the hardening layer strong. Become something.

Furthermore, since the material of the rod is used as is and a thin hardened layer is formed on the ball hitting surface of the head body, the hardened layer is added to the tapered surface of the taper recess of the natural radial body of the rod of the head body. At the same time, the impact force of the ball is also applied to the wood of the hardened layer surrounding the tapered hardening agent, and the impact force of the ball is transmitted to the head body in spots according to the crushed area of the ball.

As a result, the impact force of the ball does not spread out in a flat plane like in the past, and the hardened layer on the ball hitting surface of the head body has very little negative effect on the material of the bar material of the head body. responds well. Therefore, while causing a strong impact, the ball maintains a long contact time with the ball, rebounds the ball with strong force, and increases the flight distance of the ball, while also creating a comfortable feeling.

Moreover, it has the advantage of being extremely simple to construct and easy to construct at low cost.

[Brief explanation of drawings]

FIG. 1 is a partially cut side view of a wood head of a golf club showing one embodiment of the present invention, FIG. 2 is an enlarged side sectional view of a portion of the ball hitting surface thereof, and FIG. 3 is a front view. Fig. 4 is a side cross-sectional view for explaining the operation of the penetrating hardening liquid when it is injected, and Fig. 5 is a view of a wood head showing the state of transmission of ball impact force in the wood head of a conventional golf club.
FIG. 3 is a side view showing the operation with a section cut away. (1)...Head body, (2)...Hardened layer, (3)
...Tapered recess, (4)...Curing agent, Patent applicant Tetsuo Sekki

Claims (2)

[Claims] (1) A large number of shallow taper recesses are arranged in parallel at suitable very small intervals on the ball hitting surface of the head body made of a rod, and a penetrating hardening liquid is injected into the taper recesses, and the hardening liquid is applied to the head body. A thin hardened layer is formed on the ball hitting surface of the head body by infiltrating the ball hitting surface, and then a hardening agent of the same quality as the hardening liquid is injected into the taper recess several times and the stem is built up to form a thin hardening layer on the surface of the hardening agent. A method for hardening the ball hitting surface of a wood head for a golf club, which is made smooth and even with the ball hitting surface of the head body. (2) The penetrating hardening liquid permeates into the ball-striking surface of the head body made of a bar material through a number of shallow taper recesses arranged in parallel at appropriate very small intervals. A golf club characterized in that a thin hardened layer is installed, the inside of the tapered recess is filled with a hardening agent of the same quality as the hardening liquid, and the surface of the hardening agent is made smooth with the ball hitting surface of the head body. head for wood.