JP2773010B2 - Golf club set - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a golf club for a long golf club, a golf club for a middle golf club, and a golf club.
The present invention relates to a golf club set set in each short club group.

[0002]

2. Description of the Related Art In a conventional golf club set, for example, in the case of 9 to 10 iron sets, if the striking surface is made of carbon fiber, iron, or stainless steel, the set is formed of the same material. In a set commonly called a carbon iron, the ball striking surface of all clubs was formed of carbon fiber, and in a general iron, all ball striking surfaces were formed of a material such as iron, stainless steel, or an alloy.

[0003]

The long club is required to further increase the flight distance, while the middle club is required to have a stable flight distance and the ball to be stopped after falling to some extent. Clubs are required to backspin and stop the ball well in order to aim directly at the green. However, the conventional set has not yet sufficiently responded to such a demand.

In view of the above, the present invention provides a golf ball which has a small amount of spin for a long golf ball and runs longer to increase the flight distance, and a short golf ball which has a large amount of spin and stops well. The purpose is to provide a club set.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a method in which only a striking surface of a head is
Carbon fiber for the club and copper for the short club
Formed, and at least a ball striking surface in a middle club
The head including is made of stainless steel or iron
is there. Further, a concave portion is formed in the hitting surface of the head body, and the concave portion is formed.
The material of the face material to be fitted to the part
Is carbon fiber and stainless steel for middle clubs
It is made of stainless steel or iron, and copper for short clubs .

[0006]

In the long club according to the present invention, since the ball striking surface is formed of carbon fiber, the spin amount is reduced as compared with iron or stainless steel, leading to an increase in the flight distance. The amount of spin increases and the ball stops well. Further, in the middle club, since the ball striking surface is made of iron or stainless steel, the spin amount is intermediate between the above-described long and short clubs.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. The golf club shown in FIG. 1 has a concave portion 2 formed in a face portion of a head body 1 and a face member 3 attached to the concave portion 2.
The iron clubs No. 5 to No. 5 use carbon fiber as the face material 3, and the middle ones use iron or stainless steel as the face material 3, for example, the iron clubs No. 5 to No. 8 use for short, for example, No. 8 to Wedge In the iron club, copper is used as the face material 3. In the middle club, the face material 3 is provided in the recess 2 of the head body 1.
Can be manufactured entirely by soft iron forging or stainless casting. In order to make the face member 3 and the head main body 1 of different materials , the structure is as shown in FIG. The head body 1 is preferably made of a material such as iron, stainless steel, or carbon fiber.

The embodiment shown in FIG. 2 shows a golf club having a so-called cavity-back shape in which the central portion of the back face is cut out and a peripheral weight distribution design is performed. Use stainless steel or iron for use, and use copper for short use.

In the embodiment shown in FIG. 3, a golf club having a hollow portion 4 is shown, and can be used for a long golf club or a middle golf club.

[0010] As in the embodiment shown in FIG. 4, the head main body 1
The when molded carbon fiber sole portion 5 and <br/> metal, integrally molded therewith and carbon fiber. In any of these embodiments, nickel plating may be applied to about 15 μm for protecting the face surface, and chromium plating may be further applied to 2-3 μm.

The graphs shown in FIGS. 5 and 6 show a club corresponding to a ninth iron, the spin amount and the launch angle of a club having a ball striking surface formed of copper, and a club having a ball striking surface formed by soft iron forging. The results of the average golfers A and B and the professional golfer C trial-testing the normal golf club and the club whose hitting surface is formed of rubber are shown. It can be seen that the club corresponding to a 9-iron having a ball striking surface made of copper has an increased spin rate and a reduced launch angle as compared to a normal club. In addition, copper has a lower hardness than iron or stainless steel, so experiments were also conducted using rubber with a lower hardness, but as shown in these graphs, the spin amount was normal and the rubber was hit with a spherical surface. The launch angle is not different from the normal one only in the case of the professional golfer C, and the launch angle of the average golfers A and B is smaller in the case of using rubber than in the case of the normal golfer. Was.

A graph shown in FIG. 7 shows a club corresponding to a 9-iron having a back spin amount of a club whose hitting surface is formed by soft iron forging.
The results of the average golfer B testing a club having a nickel plating of 15 μm on 0 to 12 μm and a chromium plating of 2 to 3 μm thereon and a club having a 1 μm thick copper face material inserted on the striking surface. It can be seen that the spin amount is greatly increased even with copper plating.

The graphs shown in FIG. 8 and FIG. 9 show the results obtained when a club corresponding to a No. 3 to No. 9 iron and a club having a ball striking surface formed of carbon fiber and a club formed of soft iron (normal club) are tested. Is a measurement of the spin amount and launch angle.

In the case of a club having a ball striking surface made of carbon and a club corresponding to a normal 5-iron having a ball striking surface of soft iron forged, a professional golfer C has a normal 5600 rpm.
p. m. 3340r. In carbon. p. m. And the spin amount is clearly reduced. In the case of average golfer A, 4560 r. p.
m. 3500 r. p. m. Met. In the case of average golfer B, 6500r.
p. m. 3200r. p. m. Met.
The launch angle of this 5-iron equivalent club was 14.6 degrees normal for a professional golfer C and 17.2 carbons.
Degree. In the case of average golfer A, the average was 16.4 degrees and in the case of carbon, 15.4 degrees. In the case of average golfer B, the average was 19.3 degrees and carbon was 23 degrees. In addition, at a club equivalent to a 5-iron, professional golfer C recorded 189.2 yards in normal and 205.2 yards in carbon. In the case of average golfer A, it is 154.8 yards in normal,
157.4 yards carbon, average golfer B
162.3 yards for normal and 168 for carbon
Yard recorded. From these results, in the case of a long club, in which the ball striking surface was formed of carbon fiber, the spin amount was smaller than that of the club having a ball striking surface of soft iron forging, and the flight distance was increased.

As a result of comparing a normal club and a club formed of carbon fiber in a club for a middle iron, for example, a club corresponding to a 7 iron, the average golfer A has a normal 5200 r.p.m. p. m. , Carbon 2800r. p. m. In average golfer B, normal 5166r. p. m. , Carbon 3600r.
p. m. Met. In the case of the professional golfer C, the club corresponding to the 7-iron is normally 6620r. p. m. , Carbon 3520r. p. m.
Met. In this case, the average launch angle of the average golfer A is 20.4 degrees, and the launch angle is 23.2 carbons.
Degree, average golfer B normal 24 degrees,
28 degrees carbon, normal 18 for professional golfers C
And carbon was 23 degrees. Average distance is 137 yards for average golfer A, carbon 14
9.2 yards, the average golfer B had a normal 150.7 yards, carbon 152.3 yards, and the professional golfer C had a normal 169.2 yards and carbon 183.2 yards. In the club corresponding to the 7-iron, the balance between the flight distance and the spin amount is important, and the flight distance is not required as compared with the long club in which the hitting surface is formed of carbon, and the spin amount is formed of carbon. It is desired that the number is larger than that of the hitting surface. Therefore, it is preferable to form the hitting surface with conventional iron or stainless steel.

In a club corresponding to a ninth iron, normal and carbon are used as shown in FIGS.
And the launch angle as shown in FIG. At this time, the spin amount of the club corresponding to the ninth iron having the ball striking surface formed of carbon is 2240 r. p. m. In the case of average golfer B, 2400 r. p. m. In the case of professional golfer C, 3020 r. p. m. Met. Accordingly, it has been found that the short club has a larger spin rate when the ball or striking face is made of iron or stainless steel than that of carbon fiber, and further, has a larger spin rate when struck by copper than when struck by iron or stainless steel.

[0017]

As described in the foregoing, according to the golf club set of the present invention, in particular carbon fibers the ball striking face of the head with a long, stainless steel or iron for the middle,
Since it is made of copper for the short type, the flight distance can be increased for the long type, and the backspin amount increases for the short type, so that the ball stops well. Also, in the middle club, intermediate characteristics between long and short are obtained,
It becomes the most suitable as a golf club set.

[Brief description of the drawings]

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

FIG. 2 is a cross-sectional view of a golf club in which a back face has a cavity back shape.

FIG. 3 is a perspective view of a partial cross section having a cavity therein.

FIG. 4 is a perspective view showing a club called a so-called carbon iron.

FIG. 5 is a graph comparing the spin amounts of golf balls having a ball striking surface corresponding to a ninth iron formed of soft iron forging, copper, and rubber, respectively.

FIG. 6 is a graph comparing the launch angles of clubs corresponding to a ninth iron and having the same ball striking surface as in FIG. 5;

FIG. 7 is a club corresponding to a 9-iron, whose hitting surface is iron,
FIG. 9 is a graph showing the results of average golfer B hitting each spin amount in the case of copper plating and copper face insert.

FIG. 8 is a graph comparing the spin amounts of clubs corresponding to No. 3 iron to No. 9 iron with a normal ball striking surface and a carbon ball striking surface.

FIG. 9 is a graph comparing launch angles in the same club as in FIG. 8;

[Explanation of symbols]

 1 head body 3 face material

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Eiko Inoue 1110-6-302 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture (56) References JP-A-3-168164 (JP, A) JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) A63B 53/00 A63B 53/04

Claims (2)

(57) [Claims] In a golf club set in which a plurality of golf clubs are set in a long, middle, and short club group in the order in which a flight distance is set to be long, only a ball striking surface of a head is used for a long club. OK
Fiber and short clubs are made of copper.
In a dollar club, the head including at least the ball striking
A golf club set characterized by being formed of stainless steel or iron . 2. A golf club having a long flight distance.
Long, middle, and short classes in the specified order.
In the golf club set set in the group, A concave portion is formed in the hitting surface of the head body, and the concave portion is fitted into the concave portion.
The material of the face material to be
And middle clubs with stainless steel or iron.
The short club is made of copper.
Ruff club set.