JP3049613U - Golf club head - Google Patents

Abstract

(57) [Problem] To provide a golf club head having good ball control and a long flight distance of a hit ball. SOLUTION: The golf club head 10 of the present invention comprises:
A head body 11 formed by forging or casting a metal and having a ball striking face, and provided on the back side of the ball striking face 12 of the head body 11, having a higher hardness than the head body 11 and forming a support structure on the back side of the ball striking face 12. And a back support layer 13. A metal powder, ball material or sheet having a high hardness but a slightly lower melting point is placed on the back side of the striking face 12 of the head body 11 and placed in a vacuum furnace or a heating furnace protected by an inert gas and heated. Then, when the metal powder, the ball material or the sheet on the back side is melted, and the two kinds of metals are combined and cooled by a welding phenomenon, the hard back support layer 13 is joined to the back side of the slightly soft striking face 12. Due to the action of the soft hitting surface 12 and the hard back support layer 13, the head 10 resonates and has excellent performance in both control of hitting ball and flight distance.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a golf club head, and more particularly to a golf club head having a relatively soft striking surface and a relatively hard support layer provided on the back side of the striking surface.

[0002]

[Prior art]

 Many golfers want a golf club that has a slightly softer ball striking surface, and using such a golf club increases the contact time between the ball and the ball striking surface when the head collides with the ball at high speed. The control of the hit ball becomes easy. For example, a head that has been commonly used forged from mild steel has the advantage of easy ball control.

[0003]

[Problems to be solved by the invention]

 However, a disadvantage of this head is that the hitting distance of the hit ball is small because the hitting surface is soft. Conversely, when the hitting surface is hard, for example, a head having a ceramic surface has a long flight distance of the hitting ball, but as a disadvantage, it becomes difficult to control the hitting ball. In other words, if the hitting surface is soft, the control of the hitting ball will be good, and if the hitting surface is hard, the flight distance of the hit ball will increase, and how to obtain both the control of the hitting ball and the extension of the flight distance of the hitting ball will be obtained. This is the biggest challenge for golf club manufacturers.

[0004] Accordingly, a main object of the present invention is to provide a golf club head having both advantages of good control of the ball and long flight distance of the hit ball.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the golf club head provided by the present invention, the striking surface of the head is formed of a relatively soft metal, and a support layer having high hardness is provided on the back side of the striking surface. The ball striking surface undergoes a relatively large elastic deformation to improve controllability, and a support layer made of a super-hard material with a high elastic modulus is provided on the back surface of the ball striking surface to provide a large flight distance of the ball striking To do. However, it is not easy to tightly bond materials having different characteristics between soft and hard materials, and the bonding effect of ceramics and metal on the ball striking surface is not very good. The sound that is generated is not as good as the sound of a metal head. In order for materials having different characteristics to obtain the best bonding effect, the technical means employed in the present invention is to first forge or cast a low hardness metal into a golf club head. This head may be an iron head or a wood head. Then place a powder, ball or sheet of high hardness but slightly lower melting metal on the back side of the ball striking face and place them in a vacuum furnace or heating furnace protected by inert gas. And heat it from 600 ° to 1250 ° C to melt the metal powder, balls or sheet on the back side, but the head body is in an unfused state and the two metals are bonded by the welding phenomenon. After the metal cools, a hard support layer is bonded directly behind the slightly softer ball striking surface. The action of the soft striking surface and the hard backing layer on the back side allows the head to resonate and provide excellent performance in both control of hitting and flight distance.

[0006]

[Embodiment of the invention]

 Hereinafter, six embodiments of the present invention will be described with reference to the drawings. (First Embodiment) First, FIG. 1 shows a first embodiment of the present invention. The iron head 10 forms a head body 11 by forging or casting a metal such as mild steel, and then places a single metal material on the back side of the ball striking face 12 of the head body 11. A silver-based or nickel-based material may be used, and its hardness is higher than that of a metal material such as mild steel of the head body 11, but its melting point is lower than that of the metal material of the head body 11. The metal material may be in the form of a powder, a ball or a sheet. The entire head 10 is placed in a vacuum furnace or a heating furnace protected by an inert gas so that the ball striking face 12 faces downward, and from 600 ° to 1250 °. ℃ to melt the metal material, but the metal of the head body 11 is not melted, the two metals are combined by the welding phenomenon, and after cooling and solidifying, the hardness on the back side of the ball striking face 12 The back support layer 13 having a high height is fixedly formed.

The hitting surface 12 of this embodiment has a thickness of 1 to 3.5 mm, a hardness of Rockwell C hardness HRC 30 or less, a thickness of the back support layer 13 of 1 to 3.5 mm, and a hardness of Rockwell C. C hardness is HRC40 or more. Since the ball striking surface 12 is softer than the back side support layer 13, it is easy to control the hitting ball. Also, since the ball has the back side support layer 13 having high hardness and good elasticity, the flight distance of the hit ball becomes large and the welding property is improved. The back support layer 13 is firmly formed on the back side of the ball striking face 12 by a solid bonding method, and its bonding strength is very high. Since it is formed in a vacuum part and has no gap, the back support layer 13 is The head body 11 is in close contact with the head body 11 to form an integral structure, and no phenomenon such as dropping or separation occurs. Since the head main body 11 and the back support surface 13 are both made of metal and have an integral structure, the sound at the time of hitting the ball has a very good sound and gives an extremely good hit feeling.

(Second Embodiment) As shown in FIG. 2, the second embodiment of the present invention is also an iron head 20 like the first embodiment, and has a low hardness and a slightly high melting point material as in the first embodiment. To form a head body 21, and a silver-based or nickel-based metal material 23 is also placed on the back side of the striking surface 22 of the head body 21, and the metal material 23 is also made into a powder shape, a ball shape, or a sheet shape. Is also good. Then, a back plate 24, such as a high-hardness metal or ceramic sheet, is placed on the back of the metal material 23. The melting point of the back plate 24 is higher than the melting point of the metal material 23 and the hardness is higher than that of the head body 21. Then, as in the first embodiment, if the entire head 20 is placed in a vacuum and heated, a back support layer is formed on the back side of the striking face 22 with the metal material 23 and the back plate 24. In addition, the layer of the metal material 23 may be thinned, as long as the back plate 24 can firmly contact the back side of the hitting surface 22 of the head body 21.

Third Embodiment As shown in FIG. 3, a third embodiment of the present invention is a wood head 30, which is formed by molding a head body 31 by a casting method, and forming the head body 31 by the above-described method. A back support layer 33 is formed on the back side of the ball striking face 32, and a bottom plate 34 is used to close the bottom opening of the head body 31.

(Fourth Embodiment) As shown in FIG. 4, a fourth embodiment of the present invention is a wood head 40, which is formed by molding a head body 41 by forging, and using the method of the second embodiment. A metal material layer 43 and a back plate 44 are provided on the back side of the striking face 42 to form a back support layer, and the head shell 45 is further firmly connected to the head body 41.

(Fifth Embodiment) FIG. 5 shows a golf club head 50 according to a fifth embodiment of the present invention. The head 50 has a head body 51 and a striking surface 52 of the head body 51. A back support layer 53 is provided on the back side. The feature is that the hitting surface 52 has a slightly thinner center and a slightly thicker cross section at the center, and the back support layer 53 is formed by melting a metal material having a slightly lower melting point. Because they are firmly attached to each other, they naturally complement each other, that is, the center is slightly thicker and the periphery is slightly thinner.

Sixth Embodiment FIG. 6 shows a golf club head 60 according to a sixth embodiment of the present invention. The striking surface 62 is slightly thicker at the center and slightly thinner at the periphery. The back support layer 63 is slightly thinner at the center and slightly thicker at the periphery. Similarly, the present invention can be applied to other types of golf club heads, and it is possible to produce striking surfaces and support layers having different cross-sectional shapes.

[Brief description of the drawings]

FIG. 1 is a view showing a structure of a golf club head according to a first embodiment of the present invention;

FIG. 2 is a view showing a structure of a golf club head according to a second embodiment of the present invention;

FIG. 3 is a view showing the structure of a golf club head according to a third embodiment of the present invention.

FIG. 4 is a view showing the structure of a golf club head according to a fourth embodiment of the present invention;

FIG. 5 is a view showing a structure of a golf club head according to a fifth embodiment of the present invention;

FIG. 6 is a view showing a structure of a golf club head according to a sixth embodiment of the present invention.

[Explanation of symbols]

 10, 20, 30, 40, 50, 60 Head 11, 21, 31, 41, 51 Head body 12, 22, 32, 42, 52, 62 Striking surface 13, 33, 53, 63 Back support layer 23 Metal material 24 , 44 Back plate 34 Bottom plate 43 Metal material layer 45 Head shell

Claims (8)

[Utility model registration claims] 1. A head body formed by forging or casting a metal and having a ball striking surface, and provided on the back side of the ball striking surface of the head body, the hardness being higher than the hardness of the head body, the back side of the ball striking surface. And a back support layer that forms the support structure of (1). 2. The golf club head according to claim 1, wherein the hitting surface has a thickness of 1 to 3.5 mm. 3. The golf club head according to claim 1, wherein the hardness of the hitting surface is not more than Rockwell C hardness HRC30. 4. The thickness of the back support layer is 1 to 3.5 m.
2. The golf club head according to claim 1, wherein m is m. 5. The hardness of the back support layer is equal to or higher than Rockwell C hardness HRC40.
A golf club head as described. 6. The back-side support layer includes a vacuum furnace or a heating furnace protected by an inert gas, wherein a metal powder, a ball material or a plate material having a melting point lower than that of the head body is placed on the back surface of the hitting surface. The golf club head according to claim 1, wherein the metal powder, the ball material, or the plate material is heated to be welded and fixed to the head body. 7. A back plate is provided on the back surface of the back support layer, wherein the back plate has a hardness higher than the hardness of the head body and a melting point higher than a low melting point metal of the back support layer. The golf club head according to claim 1, wherein: 8. The back support layer is such that a metal powder, a ball or a plate having a melting point lower than that of the head body is placed on the back surface of the hitting surface, and the metal powder, a ball or a plate having a melting point on the back surface. 8. The golf club head according to claim 7, wherein a higher backing material is placed and formed by heating in a vacuum furnace or a heating furnace protected by an inert gas.