JP3004124B2 - Iron golf club head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION This invention relates to a golf club head face height is greater than the width sole, so-called Iron Gore
It is related to the Ruff Club Head.

[0002]

2. Description of the Related Art Conventional golf club heads of this kind are:
Made of materials such as stainless steel, iron or synthetic resin,
The ball striking surface of the head was also made of a material such as stainless steel, iron, carbon fiber, and aluminum.

[0003]

The conventional golf club head has a drawback that the amount of spin is small and the ball is hard to stop. For example, as shown in FIG. 4, the number of rotations of the back spin by the 9 iron of the forged iron is 3800 rpm in the case of the average golfer A. p. m. In the case of average golfer B and professional golfer C, 5200 r.p. p. m. Met. Therefore, the present invention
An object of the present invention is to provide an iron golf club head in which a backspin is increased so that a ball stops well.

[0004]

In order to achieve the above-mentioned object, the present invention has a face height larger than a sole width, a plate-like face material is fitted on a striking face, and a void is formed on the back side of the face material. In the iron golf club head, the face material is made of copper, and a nickel plating layer is provided on a front surface thereof, and a chromium plating layer is provided on the nickel plating layer.

[0005]

When the average golfer A hits a ninth iron with a stainless steel head body having copper inserted as a face material, the spin amount is 51.
00r. p. m. , And the spin amount increased compared to the 9 iron of forged soft iron. Further, in the case of average golfer B, 7000 r.p. p. m. Was exceeded. Furthermore, in the case of a professional golfer C, 9000
r. p. m. (See FIG. 4).

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. In the embodiment shown in FIG. 1, a head body 1 is cast or forged with stainless steel or iron, a concave portion 2 is formed in a face portion, and a face material 3 made of copper is inserted into the concave portion 2.

Another embodiment shown in FIG. 2 is one in which a face material 3 made of copper is inserted into the face portion, that is, the striking surface of the head main body 1, and a void 4 is formed on the back side of the face material 3. It is.

[0008] In another embodiment shown in FIG.
Is formed of a synthetic resin material such as carbon fiber, a metal material is used for the sole 5, and a face member 3 made of copper is attached to the face portion. In each of these embodiments, for protecting the face surface, a nickel plating of about 15 μm is provided on the copper surface on the front side of the face material 3, and a chrome plating of 2 to 3 μm is further provided thereon.

[0009] Among golf club heads having a face height larger than the sole width, in particular, by forming the ball striking surface of an iron club head called a short iron with copper, the spin amount is increased as compared with the conventional one. . The reason that the spin rate is increased by forming the ball striking surface with copper is as follows.
It is considered that the hardness of copper is lower than that of stainless steel or iron. However, as shown in FIG. 4, the result of trial using rubber for the ball striking surface is normal (9 iron of forged soft iron). And the spin amount was almost the same. Therefore, it cannot be said that the hardness of the ball striking surface should be low,
It was confirmed that at least the spin amount was increased by using copper for the hitting surface. Also, the results of experimenting on the launch angle of a normal 9-iron and a 9-iron using copper for the hitting surface, and a 9-iron using rubber for the hitting surface,
It was as shown in FIG. According to the graph of FIG.
It was found that the launch angle was lower in all of the ninth irons having a copper ball striking surface than the normal ninth irons. The graph shown in FIG. 6 shows a club having a back spin amount of a club corresponding to a 9-iron having a hitting surface formed by soft iron forging, that is, a normal type, and a hitting surface having a copper plating of 10 to 10.
Nickel plating 15 μm on 12 μm and chrome plating 2-3 μm on it.
The result of the average golfer B testing a club with a thick copper face material inserted therein is shown. It can be seen that the spin amount is greatly increased even with copper plating.

The initial ball speed of a normal golfer 9 using a professional golfer C and a 9-iron using copper as the ball striking surface is 42.7 m / sec for a normal ball and 44.7 m / sec for a ball having a copper ball striking surface. Seconds. Also,
The head speed was normal 37.9 m / sec, copper 38.
8m / s, normal flight distance 133.3 yards, copper 1
It was 35 yards.

[0011]

As described above, according to the present invention, an iron golf club having a face height larger than a sole width, a plate-like face material fitted on a hitting surface, and a void behind the face material. In the head, the face material is made of copper, and a nickel plating layer is provided on the front side surface of the head, and a chromium plating layer is provided on the nickel plating layer. It was confirmed that it increased and the ball stopped well.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a preferred embodiment of the present invention.

FIG. 2 is a perspective view of a partial cross section showing another embodiment.

FIG. 3 is a perspective view showing still another embodiment.

FIG. 4 is a graph showing the results of a test hit by each golfer on each spin amount when the hitting surface is iron, copper, or rubber.

FIG. 5 is a graph showing the result of measuring the difference in launch angle between the same clubs as in FIG. 4;

FIG. 6 is a club corresponding to a 9-iron, whose hitting surface is iron,
9 is a graph showing the results of average golfers B hitting respective spin amounts in the case of copper plating and copper face insert.

[Explanation of symbols]

 1 head body 3 face material

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Heito Shimazaki 5-14-16-203 Higashi-Gotanda, Shinagawa-ku, Tokyo (72) Inventor Masaomi Hiruda 1-19-11 Matsuyama, Kiyose-shi, Tokyo (72) Inventor Hideyuki Ishii 3-5-10, Arita-cho, Hachioji-shi, Tokyo (56) References JP-A-60-106472 (JP, A) JP-A-63-226378 (JP, A) JP-A-63-19169 (JP, A) JP-A-62-201168 (JP, A) JP-A-4-129577 (JP, A) JP-A-2-181476 (JP, A) JP-A 60-6654 (JP, U) JP-A 61-2011 10767 (JP, U)

Claims (2)

(57) [Claims] 1. The face height is greater than the sole width,
In an iron golf club head in which a plate-shaped face material is fitted into a striking surface and a void is formed on the back side of the face material, the face material is made of copper, and a nickel-plated layer and a nickel-plated layer are formed on the front surface. An iron golf club head comprising a chrome-plated layer thereon. 2. The nickel-plated layer has a thickness of about 15 μm.
2. The iron golf club head according to claim 1, wherein each of the m and chrome plating layers has a thickness of 2 to 3 [mu] m.