JPH057262U - Golf club - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a golf club which is excellent in both directional stability and flight distance and which is unlikely to scratch the face surface. [Structure] A head body 1 having a substantially flat portion which becomes a ball striking surface.
And a flat face portion 2 fixed to a substantially flat portion of the head body 1. Face part 2 is Zn
And the like are contained in a range capable of having a β brass type structure, and the balance is a β brass type alloy composed of Cu, and is composed of a superelastic alloy having a composition that becomes an austenite phase at room temperature. . The head body 1 is made of a material having no superelasticity.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to a golf club, and particularly to a golf club having an improved face structure. It's about the club.

[0002]

[Prior art]

  Traditionally, wood clubs consist of persimmon as the main body and the face part It was always composed of materials such as plastic. However, in recent years High-hardness two-piece balls have been used for the purpose of expanding the Chairs are required. This is to reduce the occurrence of scratches.

[0003]   Therefore, as a wood club suitable for two-piece balls, the main body is a hollow carbo. Made of materials such as fiber reinforced plastic (CFRP) or persimmon, A club with a face made of metal such as pure titanium or CFRP has appeared. ing.

[0004]

[Problems to be solved by the device]

  However, it was constructed of such conventional materials that are only hard Golf clubs can reduce scratches by improving hardness, but have poor directional stability. There was a problem saying.

[0005]   In view of the above conventional problems, the present invention is excellent in both directional stability and flight distance, Moreover, it is an object of the present invention to provide a golf club in which the face surface is not easily scratched.

[0006]

[Means for Solving the Problems]

  The golf club of the present invention comprises a head body having a substantially flat portion which is a hitting surface, And a flat face portion fixed to a substantially flat portion of the head body. F The face portion is made of Zn, Al, Ni, Si, Sn, Mn, Ag, Mg, Sb, Ga, One or more elements selected from the group including Ge and In may have a β brass type structure It is a β-brass type alloy that contains in the range and the balance is Cu, and is austenite at room temperature. It is composed of a superelastic alloy having a composition that provides a to-phase. Also, the head body is It is made of a material that does not have superelasticity.

[0007]   For the "head body", wood, glass fiber, CFRP and It may be composed of various known materials such as metals such as stainless steel. In addition, these materials Two or more kinds of materials may be used to form a laminated or composite head body. Needless to say.

[0008]

[Action]

  According to this invention, the face portion is made of the β brass type alloy having the above composition. This reduces the occurrence of scratches on the face part and also reduces the stress-induced You can also improve the directional stability by utilizing the flexibility provided by insight. You That is, the use of β-brass type alloy improves the flight distance and directional stability. You can do both of the above.

[0009]

【Example】

  Example 1   As shown in the perspective view of FIG. 1, the head body 1 is made of Persimmon, and 2 is a β brass alloy consisting of 25 wt% Zn, 5 wt% Al, and the balance Cu (transformation temperature : -30 ° C.) was manufactured.

[0010]   When a batting machine was used to perform a batting test using a two-piece ball, Almost no scratches are generated on the head portion 2, and both the directional stability and the flight distance are improved. It was confirmed to be excellent.

[0011]   Example 2   As shown in the perspective view of FIG. 2, the head body 1 made of CFRP and the weight of Al 14 %, Ni 4% by weight, and the face portion 2 made of β brass type alloy consisting of the balance Cu Eru Golf Club 3 was manufactured.

[0012]   A hitting test was carried out on a hitting machine using a two-piece ball. Compared to other golf clubs with CFRP face parts, the direction stability is far superior. And the flight distance, and scars were scarcely generated on the face portion 2.

[0013]   Example 3   As shown in the perspective view of FIG. 3, the head body 1 is made of stainless steel, and Β-brass type consisting of aluminum part 13.7% by weight, Ni 3.9% by weight, and balance Cu A golf club 3 was manufactured by using an alloy.

[0014]   When a batting test was conducted with a batting machine using a two-piece ball, The chair part 2 was scarcely scratched. In addition, directional stability and flight distance However, it showed far superior characteristics to conventional golf clubs.

[0015]

[Effect of device]

  As described above, according to this invention, the face portion is fixed to the substantially flat portion of the head body. It is made of a flat material and its material is Zn, Al, Ni, Si, Sn, Mn. , Ag, Mg, Sb, Ga, Ge, In, etc. Β-brass type alloy containing elements in a range capable of having a β-brass type structure with the balance being Cu And is composed of an alloy having a composition that becomes an austenite phase at room temperature. When a golf ball is hit, stress-induced martensite occurs. This Marte Since the nucleite phase is easily deformed, it has a larger area and longer than the golf ball. Greater directional stability due to better contact with time and so-called ball retention Contribute. In addition, the repulsion of the face part is due to the stress-induced martensitic austenite. Based on the recovery to the phase, that is, superelastic behavior, the head body has superelastic Since it is composed of a material that does not have a ball, the amount of deformation at the time of hitting the ball can be suppressed appropriately and the repulsion coefficient can be reduced. The greater repulsive force acts without decreasing the number, and the flight distance of the golf ball is also Greatly extended. As a result, both longer flight distance and improved directional stability are achieved. Because it can be applied and has a relatively high hardness, it is hard to scratch the face surface. You can get Ruff Club.

[Brief description of drawings]

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

FIG. 2 is a partial perspective view showing a second embodiment of the present invention.

FIG. 3 is a partial perspective view showing a third embodiment of the present invention.

[Explanation of symbols]

1 head body 2 face part 3 golf clubs

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Creator Kazuhiko Hayashi             1-3-3 Shimaya, Konohana-ku, Osaka Sumitomo Electric             Ki Industry Co., Ltd. Osaka Works

Claims (2)

[Scope of utility model registration request] 1. A head body having a substantially flat portion serving as a ball striking surface, and a flat-shaped face portion fixed to the substantially flat portion of the head body, wherein the face portion is made of Zn, Al, Ni, Si, Sn, M
A β brass alloy containing at least one element selected from the group including n, Ag, Mg, Sb, Ga, Ge and In in a range capable of having a β brass structure, and the balance being Cu. A golf club, characterized in that it is made of a superelastic alloy having a composition that becomes an austenite phase at room temperature, and the head body is made of a material having no superelasticity. 2. The golf club according to claim 1, wherein the head body is made of one or more materials selected from wood, glass fiber, carbon fiber reinforced plastic, and stainless steel.