JP3093449U - Golf club head face plate structure - Google Patents

Abstract

(57) [Summary] (With correction) [Problem] To prevent the phenomenon that stress is concentrated on the inner surface by forming a highly polished surface on the inner surface of the face plate. An object of the present invention is to provide a structure of a face plate of a golf club head which can increase the durability fatigue strength of metal and extend the service life. SOLUTION: In the structure of a face plate 10 of a golf club head comprising an outer surface 11 and an inner surface, a plurality of grooves 13 are formed on the outer surface 11, while the inner surface has a surface roughness. Is formed at a high polished surface lower than 6.3 μm, so that a fracture spot due to concentration of stress can be removed.
Is formed on the club head in combination with the sole plate 20 and the crown plate 30, so that the impact stress can be absorbed on average.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a structure of a face plate of a golf club head, and particularly to a golf club head. By forming the inner surface of the face plate of the frub head to a highly polished surface, Golf club head capable of eliminating fracture spots due to stress concentration It relates to the structure of the face plate.

[0002]

[Prior art]

  Conventionally, this kind of thing is as follows.

[0003]   As a structure of a face plate of a conventional golf club head, as shown in FIG. The face plate is made of high strength special steel or titanium alloy, forged and pressed. It is manufactured into a metal plate of a predetermined shape through shape or machining forming. Above fae The outer surface 91 (striking surface) of the cover plate 90 has a striking friction force, accuracy and striking force of the club head. Since it directly affects important performance such as the flight distance of a ball, it is not used in the industry. After the base plate 90 is finished, the outer surface 91 is further processed, For example, after finishing polishing, it is configured to process a plurality of grooves 93 again. Has been.

[0004]

[Problems to be solved by the device]

  The conventional face plate 90 manufactured in the above manufacturing process is used in any manufacturing process. However, since the metal is unevenly distributed on the inner surface 92 and the outer surface 91, Since a plurality of fracture spots are formed on the base plate 90 for stress concentration, A crack will occur at the time of hitting the ball. That is, in the manufacturing process of forging molding, When the base plate 90 is manufactured, it is further cooled by contact with the mold due to the flow of the hot metal. As a result, a fine flow on the inner surface 92 and the outer surface 91 of the face plate 90 is obtained. A moving pattern (see FIGS. 5 and 6) occurs. And in the manufacturing process of press molding When the face plate 90 is manufactured, the face plate 90 is face-rolled during the roller rolling process. A pattern in a specific direction is generated on the inner surface 92 and the outer surface 91 of the plate 90. So Then, when the face plate 90 is manufactured in the machining process, The pattern of the blade marks on the inner surface 92 and the outer surface 91 of the face plate 90 Will occur. By processing the outer surface 91 of the face plate 90, It is possible to remove the original breaking spot 94 on the outer surface 91, but On the inner surface 92, which is not exposed, a large number of pattern-like fracture spots 94 still remain. Therefore, when the face plate 90 hits a ball, stress is applied at the breaking spot 94. Since the phenomenon of concentration occurs, the durability fatigue strength of the metal decreases. At the same time, there is a problem that the face plate 90 is cracked and the service life is shortened. It was Therefore, the face plate of the conventional golf club head described above is further reliably improved. Need to

[0005]   The present invention has been made in view of these problems, and has its object. However, the inner surface of the face plate is formed into a more sophisticated polished surface, Since the surface has a surface roughness of 6.3 μm or less, there is a fracture spot for stress concentration. The removal can reduce the occurrence of cracks in the face plate. Furthermore In addition, since the inner and outer surfaces of the face plate can evenly absorb the impact stress, The durability fatigue strength of the metal of the base plate can be increased and the service life is extended. Providing a structure for a face plate of a golf club head having the advantage of being able to Is what you are trying to do.

[0006]   The first object of the present invention is to form a highly polished surface on the inner surface of the face plate. This makes it possible to eliminate the phenomenon that stress is concentrated on the inner surface. It can increase the durable fatigue strength of the metal of the base plate and extend the service life. It is intended to provide a structure for a face plate of a ruff club head.

[0007]

[Means for Solving the Problems]

  In order to achieve the above object, the face plate of the golf club head according to the present invention is The structure is as follows. That is,   Structure of face plate of golf club head composed of outer surface and inner surface The outer surface is formed on the hitting face, and the inner surface is highly polished surface. By being formed, the destruction spots for stress concentration are removed and It is formed so as to increase the durable fatigue strength of the metal of the face plate.

[0008]   Further, the structure of the face plate of the golf club head of the present invention is configured as follows. You can also do it. 1. A plurality of grooves are formed on the face plate. 2. The highly polished surface is formed by electrolytic polishing. 3. The highly polished surface is formed by chemical polishing. 4. The highly polished surface is formed by vibration polishing. 5. The surface roughness of the highly polished surface is formed to be lower than 6.3 μm. 6. The surface roughness of the highly polished surface is formed to be lower than 3.5 μm. 7. The face plate is combined with the sole plate and the crown plate to connect to the golf club head. Is formed. 8. The club head further includes a hosel member.

[0009]

[Embodiment of device]

  Embodiments of the present invention will be described below with reference to the drawings.

[0010]   FIG. 1 shows the structure of the face plate of the golf club head of the present invention is not assembled. 2 is a perspective view of a state, FIG. 2 shows a structure of a face plate of the golf club head of the present invention. FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. It is a comparison diagram of the situation of the surface roughness of the structure of the horizontal plate and the structure of the conventional face plate.

[0011]   1, 2, 3 of the golf club head face plate 10 of the present invention. The structure includes an outer surface 11 and an inner surface 12. The face plate 10 has a high strength. After forging, pressing or machining of special steel or titanium alloy materials It is a manufactured metal plate having an arc degree. The outer surface 11 has a plurality of grooves. 13 is formed, the striking frictional force of the face plate 10, accuracy, and The flight distance can be increased. The inner surface 12 is formed as a highly polished surface, and As shown in, the above-mentioned highly polished surface is electrolytically polished, chemically polished or vibrated according to the demand. It can be formed using a method such as polishing and polishing, and the above-mentioned highly polished surface is polished. After that, it is preferable that the surface roughness (Rmax) is lower than 6.3 μm, especially 3.3. Since it is lower than 5 μm, a fracture spot (Fig. The breaking spots of the face plate 90 of the conventional golf club head shown in FIGS. Of the metal of the face plate 10 by removing as much as possible. You can increase your labor intensity. Further, on the outer surface 11 of the face plate 10 Of the face plate 10 can be further advanced polishing polishing processing. After the surface 12 and the outer surface 11 have been processed, the face plate 10 is softened. The golf club head or Or a very large golf club head is formed. In addition, the above golf club head The hosel member 40 is also provided in the club, and the hosel member 40 is a club (not shown). ) Can be used to interlock and bond.

[0012]

[Table 1]

[0013]   Referring again to FIGS. 2 and 4, the golf club head of the present invention shown in FIG. The structure of the plate further advances, and a highly polished surface is formed on the inner surface 12 of the plate. The inner surface 12 is shaped to have a surface roughness of 6.3 μm or less by a smooth polished surface. By doing so, it is possible to eliminate fracture spots due to stress concentration. Therefore, it is possible to reduce the occurrence of cracks in the face plate 10. The inner surface 12 and the outer surface 11 can uniformly absorb the impact stress. Shown in FIG. The structure of the face plate of the conventional golf club head is the same as the structure left on the inner surface 92 thereof. There is a phenomenon that stress is concentrated at the time of hitting by several breaking spots 94. When compared with the problem that the durable fatigue strength of metal decreases due to twisting The structure of the face plate of the golf club head of the present invention shown in FIG. The durability fatigue strength of the metal can be surely increased and the service life can be extended. It has the advantage of being able to.

[0014]

[Effect of device]

  According to the structure of the face plate of the golf club head of the present invention, the inner surface of the face plate is Phenomenon in which stress concentrates on the inner surface due to the formation of a highly polished surface on the surface Since it is possible to increase the durability fatigue strength of the metal of the face plate, The advantage is that the service life can be extended.

[0015]   The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Can be given. Accordingly, the preferred embodiments described herein are exemplary only. Thus, it is not limiting.

[Brief description of drawings]

FIG. 1 is a perspective view of a golf club head of the present invention in which a face plate structure is not assembled.

FIG. 2 is a sectional view taken along line 2-2 of FIG. 1 showing the structure of the face plate of the golf club head of the present invention.

FIG. 3 is a comparison view of the surface roughness of the structure of the face plate of the golf club head of the present invention and the structure of the conventional face plate.

FIG. 4 is a local cross-sectional view showing a state in which the inner surface of the structure of the face plate of the conventional golf club head is formed into a fine pattern of break spots.

FIG. 5 is a front view of a state in which the inner surface of the structure of the face plate of the conventional golf club head is formed into a fine pattern of break spots.

FIG. 6 is a partial cross-sectional view of an electron micrograph showing a state in which the inner surface of the structure of the face plate of the conventional golf club head is formed into fine pattern-like fracture spots.

[Explanation of symbols]

10 face plate 11 outer surface 12 inner surface 13 groove 20 sole plate 30 crown plate 40 hosel member 90 face plate 91 outer surface 92 inner surface 93 groove 94 destruction spot

Claims (9)

[Scope of utility model registration request] 1. A face plate (1) for a golf club head comprising an outer surface (11) and an inner surface (12).
0), the outer surface (11) is formed on the striking face, and the inner surface (12) is formed on a highly polished surface, thereby eliminating a fracture spot due to stress concentration. A structure of the face plate of the golf club head, which is formed so as to increase the durable fatigue strength of the metal of the face plate (10). 2. The face plate (10) is formed with a plurality of grooves (13).
The structure of the face plate of the described golf club head. 3. The structure of a face plate of a golf club head according to claim 1, wherein the highly polished surface is formed by electrolytic polishing. 4. The structure of a face plate of a golf club head according to claim 1, wherein the highly polished surface is formed by chemical polishing. 5. The structure of a face plate of a golf club head according to claim 1, wherein the highly polished surface is formed by vibration polishing. 6. The surface roughness of the highly polished surface is 6.3 μm.
The face plate structure for a golf club head according to claim 1, 3, 4, or 5, wherein the face plate structure is formed to be lower. 7. The surface roughness of the highly polished surface is 3.5 μm.
The face plate structure for a golf club head according to claim 1, 3, 4, or 5, wherein the face plate structure is formed to be lower. 8. The face plate (10) is a sole plate (2).
0) and the crown plate (30) are combined to form a golf club head. 9. The structure of a face plate of a golf club head according to claim 1, wherein the club head further includes a hosel member (40).