JP2942494B2 - Golf wood club head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head for golf, and its object is to transmit a feel to a user's hand through a shaft at the time of a hit like a persimmon head, thereby promoting golf improvement. An object of the present invention is to provide a golf wood club head which has a small impact at the time of hitting, is less likely to cause injury to an elbow, and can be easily manufactured.

[0002]

2. Description of the Related Art The inventor of the present application has proposed a golf wood club head comprising a metal head shell having a hollow portion and a foamed metal disposed in the hollow portion. (Japanese Patent Application No. 7-124469). This Japanese Patent Application 7-1
In the golf club head for golf of No. 24469, since a lightweight metal foam having excellent shock absorbing ability is disposed inside the head main body, when hitting like a conventional persimmon head, the ball is moved to any position of the head. It can transmit the feeling of whether it has been caught to the user's hand through the shaft, promote the improvement of golf, and has the excellent property that the impact at the time of hitting is small and it is difficult to injure the elbow Things.

[0003]

However, the above-described golf wood club head has the following problems. In other words, foamed metal (especially foamed aluminum) can be produced only with a specific gravity of about 0.2 to 0.3 due to restrictions on the production method. Therefore, it is inevitable to construct a club head having a certain weight. A configuration in which the outside of the foamed metal is covered with the metal must be used, and the configuration becomes complicated, which is not preferable in terms of manufacturing cost and the like. In addition, since foamed metal is usually provided in the form of a rectangular parallelepiped, secondary processing is required in order to dispose it inside the club head, which also complicates the manufacturing process of the club head and increases the cost. Had become. Therefore, the inventor of the present application has intensively studied a method of obtaining a club head having the same excellent properties as the invention of Japanese Patent Application No. 7-124469 with a simpler configuration, and has created a golf wood club head of the present invention. Reached.

[0004]

According to the first aspect of the present invention, after a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum are packed in a mold and compression-molded, the small pieces or small pieces are separated by energization. This is a golf wood club head having a welded core material as a head body. The invention according to claim 2 is that, after a required number of small pieces of plate-like aluminum or small pieces of aluminum foam are packed in a mold and compression-molded, a core material obtained by welding between the small pieces or small pieces by energization is used as a head body. A golf wood club head, wherein at least a face and a sole surface of the head body are covered with different materials. The invention according to claim 3 is a golf wood having a core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum with a thermosetting adhesive entangled in a mold and subjecting them to heat compression molding. The club head. According to a fourth aspect of the present invention, a core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum in which a thermosetting adhesive is entangled in a mold and heat-compressing the mold is used as a head body. Characterized in that at least a face and a sole surface of the golf club head are covered with different materials. The invention according to claim 5 comprises a metal head outer shell having a hollow portion and a core disposed in the hollow portion, wherein the core has a required number of plates entangled with a thermosetting adhesive. A wood club head for golf, characterized by being manufactured by packing small pieces of aluminum or small pieces of foamed aluminum into a mold and heating and compressing them.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a golf wood club head according to the present invention will be described with reference to the drawings. FIG. 1 is a sectional view showing an example of an embodiment of a golf wood club head 1 according to the present invention. The head main body 2 of the golf wood club head 1 according to this example is prepared by packing a required number of small pieces of plate-like aluminum or small pieces of aluminum foam into a mold and compression-molding them, and then energizing the small pieces or small pieces to form a gap. It is manufactured by welding.

Here, it is preferable to select the size and number of the small pieces of plate-like aluminum or the small pieces of aluminum foam so that the specific gravity after compression molding is about 0.9. By setting the specific gravity after compression molding to about 0.9, a club head having the same specific gravity as the persimmon head can be obtained.

[0007] Here, aluminum foam is a kind of metal foam, and is a porous material in which pores independent or continuous from the foam metal are dispersed in a cell-like manner, and is a lightweight metal composite excellent in light weight and shock absorption. Point. As a method for obtaining the foamed metal, particles of hydride or natural minerals that generate gas near the melting point of molten metal whose viscosity has been increased by a method such as alloying, oxidizing a molten metal, or dispersing ceramic particles are used. A method of manufacturing by adding and mixing as a foaming agent and retaining generated gas in a molten metal can be exemplified as an example. Alternatively, a method in which calcium is added to the molten metal, titanium hydride is added to the molten metal that has been oxidized and thickened by stirring and mixed, and the decomposed hydrogen gas is retained can also be exemplified.

Further, as a method of foaming a high melting point metal such as copper or iron or a low melting point metal such as aluminum, the viscosity is increased at atmospheric pressure by a method corresponding to the molten metal to increase the viscosity. Hydrogen, nitrogen, oxygen or a mixture of these gases is blown into the viscous molten metal or hydride,
After dispersing and mixing particles that generate gas by thermal decomposition of nitrides, oxides, hydrous minerals, and the like by stirring and mixing, the gas is melted into the thickened molten metal, and then -4.
A method of foaming a molten metal by setting a reduced pressure atmosphere of 00 mmHg or less can also be exemplified. In the case of foamed aluminum obtained by such a method, foamed aluminum has an apparent specific gravity of 0.2 to 0.3 and a porosity of about 65 to 78%, and independent or continuous pores are formed into cells. Since it is a dispersed porous material, it is lightweight and exhibits excellent shock absorbing ability.

In the golf club head for golf according to the present invention, the specific gravity of the foamed aluminum is reduced from about 0.2 to 0.3 to 0.1 mm by compression-molding a required number of small pieces of aluminum foam in a mold. The club head can be raised to about 9, and a club head having the same specific gravity as the persimmon head can be obtained without coating with metal or the like. In addition, by welding between small blocks by energization after molding,
The molded body can be integrated, and excellent strength can be obtained.

As another example of a method of manufacturing the head body 2, a required number of small pieces of plate-like aluminum or small pieces of aluminum foam entangled with a thermosetting adhesive are placed in a mold and compression-molded while heating. Can be exemplified. Even by using such a method, it is possible to obtain a club head having a specific gravity similar to that of the persimmon head without coating with a metal or the like, and furthermore, the small pieces or small blocks are integrally solidified by the thermosetting adhesive. It is also excellent in strength. The thermosetting adhesive used here is not particularly limited and includes a phenol resin adhesive, a urea resin adhesive, a melamine resin adhesive, a furan resin adhesive, a silicone adhesive, an epoxy resin adhesive, a polyester resin adhesive, and the like. Can be mentioned as a suitable example.

FIG. 2 is an external view showing another example of the embodiment of the golf wood club head 1 according to the present invention, and FIG.
FIG. 3 is a sectional view taken along line AA of FIG. 2. The golf wood club head 1 according to this example has a face body 3 and a sole face 4 of a head body 2 covered with a metal material.
As a method for manufacturing the head body 2, any of the above-described methods is suitably used. However, the head body 2 according to this example is made of sheet aluminum so that the specific gravity after compression molding is slightly smaller than 0.9. It is preferred to select the size and number of small pieces or small pieces of foamed aluminum. This is so that the specific gravity of the club head 1 in a state where the face surface 3 and the sole surface 4 are covered with the metal material after the compression molding is about 0.9, which is about the same as that of the persimmon head.

As the material of the face surface 3 and the sole surface 4, any material used in a normal wood club head can be used, and specifically, stainless steel alloy, aluminum alloy, titanium, titanium alloy, etc. Is preferably used. Among them, titanium or a titanium alloy having relatively small specific gravity, high strength, and excellent durability and repulsion is more preferably used. Specifically, Ti-A
1 alloy, Ni-Ti alloy, Ti-6Al-4V alloy, T
A preferred example is i-4.5Al-3V-2Fe-2Mo alloy.

As a method of integrating the head body 2 with the face surface 3 and the sole surface 4, any method such as welding, crimping, bonding, brazing, bolting, riveting, or the like can be appropriately selected.

FIG. 4 is a sectional view showing still another example of the embodiment of the golf wood club head 1 according to the present invention.
The golf wood club head 1 according to this example includes a metal head shell 5 having a hollow portion and a core 6 disposed in the hollow portion. The core 6 is manufactured by packing a required number of small pieces of plate-like aluminum or small pieces of aluminum foam in which a thermosetting adhesive is entangled in a mold and performing compression molding while heating. Thus, the core 6 can be manufactured without performing machining such as cutting. Regarding the size and the number of the small pieces of plate-like aluminum or the small pieces of the foamed aluminum, the specific gravity of the club head 1 in the state where the core 6 is covered with the metal head shell 5 is about 0.9 which is almost the same as that of the persimmon head. It is preferable to select such a value. The thermosetting adhesive used here is also not particularly limited, and the above-mentioned adhesives can be appropriately selected and used.

As a method of coating the core 6 with the metal head shell 5, a method of placing the core 6 in a mold with kerosene or the like, and then pouring the molten metal into the mold and casting the core is preferable. Used for In this case, it is preferable to cover the core 6 with a thin metal plate to prevent the core 6 from being heated by the molten metal. Further, as another method of coating the core 6 with a metal material, the metal outer shell 5 divided into a plurality of members is formed by welding, bonding, crimping, brazing, bolting, riveting, or the like. A method of fixing to the child 6 may be used. The material of the head shell 5 is as follows.
Any of the materials used in ordinary wood club heads can be used, and any of the same materials as in the above-described examples are suitably used.

[0016]

As described above, according to the first aspect of the present invention, a required number of small pieces of plate-like aluminum or small pieces of aluminum foam are packed in a mold, compression-molded, and then the small pieces or small pieces are energized. Since the golf club head is a golf wood club head having a head body made of a core material welded between the head members, the following effects can be obtained. That is, it is possible to obtain a head main body having a specific gravity similar to that of the persimmon head without requiring secondary processing, and since the obtained head main body is a porous body in which voids or pores are dispersed, a head body such as a persimmon head is obtained. The feel of where the ball was caught on the head when hitting can be transmitted to the user's hand through the shaft, which can promote golf improvement and the impact at the time of hitting is small, causing injury to the elbow Hard to give.

According to a second aspect of the present invention, a core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of aluminum foam into a mold and compressing and then welding the small pieces or small pieces by energization is provided. Since the golf club head is a golf club, wherein at least the face and the sole surface of the golf club head are coated with different materials, the following effects are obtained in addition to the effects of the invention of claim 1. To play. That is, at least the face of the head body,
Since the sole surface is covered with another material such as a metal, a stable hit ball can be obtained, and sufficient strength against the hit ball can be obtained.

According to a third aspect of the present invention, a core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum with a thermosetting adhesive entangled in a mold and heat-compression molding the head material. Since the golf club head is a golf club head, the following effects can be obtained. That is, it is possible to obtain a head main body having a specific gravity similar to that of the persimmon head without requiring secondary processing, and since the obtained head main body is a porous body in which voids or pores are dispersed, a head body such as a persimmon head is obtained. The feel of where the ball was caught on the head when hitting can be transmitted to the user's hand through the shaft, which can promote golf improvement and the impact at the time of hitting is small, causing injury to the elbow Hard to give.

In a fourth aspect of the present invention, a core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum in which a thermosetting adhesive is entangled in a mold and heat-compressing the mold is used as a head body. Since the golf wood club head is characterized in that at least the face and the sole surface of the head body are covered with different materials, the following effects are obtained in addition to the effects of the third aspect of the invention. That is, since at least the face and the sole surface of the head body are covered with another material such as a metal body, a stable hit ball can be obtained, and sufficient strength against the hit ball can be obtained.

According to a fifth aspect of the present invention, a metal head shell having a hollow portion and a core disposed in the hollow portion are provided, and the core is entangled with a thermosetting adhesive. A golf wood club head characterized by being manufactured by packing a number of small pieces of plate-like aluminum or small pieces of foamed aluminum into a mold and heating and compressing the mold, has the following effects. That is, it is possible to obtain a core made of a porous body in which voids and pores are dispersed, which are lightweight and have excellent shock absorbing ability, without requiring secondary processing. Also,
Since the obtained core is arranged inside the club head, it is possible to transmit the feeling of where the ball was caught on the head when hitting like a persimmon head to the user's hand through the shaft. The golf club can be improved, and the impact at the time of hitting is small, and the elbow is hardly damaged.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of an embodiment of a golf wood club head according to the present invention.

FIG. 2 is an external view showing another example of the embodiment of the golf wood club head according to the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view showing still another example of the embodiment of the golf wood club head according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wood club head for golf 2 Head body 3 Face side 4 Sole side 5 Head shell 6 Core

Claims (5)

(57) [Claims] Claims 1. After a required number of plate-like aluminum pieces or foam aluminum pieces are packed in a mold and compression-molded,
A wood club head for golf, wherein a core material obtained by welding the small pieces or small blocks by energization is used as a head body. 2. After a required number of small pieces of plate-like aluminum or small pieces of aluminum foam are packed in a mold and compression-molded,
A wood club head for golf, wherein a core material obtained by welding the small pieces or small blocks by energization is used as a head body, and at least a face and a sole surface of the head body are covered with another material. 3. A golf wood club head having a core body formed by packing a required number of small pieces of plate-like aluminum or small pieces of foamed aluminum entangled with a thermosetting adhesive in a mold and subjecting them to heat compression molding. . 4. A core material obtained by packing a required number of small pieces of plate-like aluminum or small pieces of aluminum foam with a thermosetting adhesive entangled in a mold and heat-compressing the same into a head body;
A golf club head for golf, wherein at least a face and a sole surface of the head body are covered with different materials. 5. A required number of plate-like aluminum members each comprising a metal head shell having a hollow portion and a core disposed in the hollow portion, wherein the core is entangled with a thermosetting adhesive. A golf wood club head manufactured by packing a small piece or a small lump of aluminum foam into a mold and heating and compressing the mold.