JP3070356U - Golf club head - Google Patents

Abstract

(57) [Problem] To provide a high quality golf club head having a low center of gravity, easy welding work, good work efficiency and high quality. SOLUTION: The main body 20 is provided with a main thin section 32 and an upper shell thin section 30 provided with a circular thin section 34. The main body 20 is made of a metal material and has a shell shape.
The first cutout portion 23 having an arc-shaped curved surface is formed on the surface portion, and the main thin portion 32 is manufactured from a material different from the metal material of the main body 20, has an arc-shaped curved shape, and has a second thin portion
The notch and the shape correspond and are welded to the second notch,
The circular thin section 34 is manufactured from the same metal material as the metal material forming the main body 20, and the outer peripheral edge corresponds to the first cutout 23, and is welded to the first cutout 23, and the hollow head 10 is formed.
Are formed. Therefore, a high quality golf club head having a low center of gravity, easy welding work, good work efficiency and high quality can be obtained.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a golf club head.

[Prior art]

 A conventional golf club head has a hollow structure formed by welding two or three elements. FIG. 1 shows a head of a typical conventional golf club. First, the base shell 91, the front shell thin section 92, and the upper shell thin section 93 are formed by casting or forging. Next, the peripheral edges of the shell 91, the front shell thin section 92, and the upper shell thin section 93 are joined and welded along the seam to produce a hollow head.

Generally, most golf club heads are manufactured so that the center of gravity is as low as possible. Therefore, the ball can be hit high and far.

The present inventor has noted that a head having a low center of gravity can be manufactured by using shell flakes having different materials and specific gravities from the shell. That is, a thin flaky upper shell thin portion 93 is made of a metal having a low specific gravity (for example, titanium (Ti)), and a basic shell 91 and a front shell thin flake 92 are made of a heavy metal (for example, stainless steel). . Then, the obtained head has a structure with a light upper part and a low center of gravity.

[0004]

[Problems to be solved by the invention]

 However, in actual production, while the final shell flakes are being welded, the other two shell flakes 91 and 92 are close together at the arcuate end of the upper shell flake part 93. Difficulties arise. In severe cases, the welding operation is more difficult because it must be done in a chamber filled with vacuum or idle gas. In such a case, it takes a long time to manufacture, and the manufacturing cost is also high. Furthermore, the quality is inferior and cannot reach the stage of mass production. Therefore, such a head has no industrial value.

Therefore, a main object of the present invention is to provide a high quality golf club head having a low center of gravity, easy welding work, high work efficiency.

[0006]

[Means for Solving the Problems]

 According to a first aspect of the present invention, there is provided a golf club head comprising: a main body; and an upper shell thin section provided with a main thin section and a circular thin section. Manufactured from metal material, it is shell-shaped, has an arc-shaped curved first notch formed on the surface, and the main thin section is manufactured from a material different from the main metal material and has an arc-shaped curved surface. The shape of the circular thin portion corresponds to the shape of the second notch, and is welded to the second notch. The circular thin portion is made of the same metal material as the metal material forming the main body, and has an outer peripheral edge. Corresponds to the first notch and is welded to the first notch to form a hollow head. Therefore, a high quality golf club head having a low center of gravity, easy welding work, good work efficiency and high quality can be obtained.

According to the golf club head according to the second aspect of the present invention, the main body is provided with the first cutout at the upper part, and the specific gravity of the material of the main thin section is smaller than the specific gravity of the material of the main body. Thus, a golf club head having a low center of gravity can be obtained.

According to the golf club head according to the third aspect of the present invention, since the length between the inner peripheral edge and the outer peripheral edge of the circular thin section is 2 to 5 mm, a high quality golf club head can be obtained. be able to.

According to the golf club head of the present invention, since the material of the main body is stainless steel and the material of the main thin section is titanium, a high quality golf club head having a low center of gravity is obtained. be able to.

According to the golf club head of the fifth aspect of the present invention, since the first cutout is provided on the surface portion on which the ball is hit, a high quality golf club head can be obtained.

[0011]

[Embodiment of the invention]

 Hereinafter, a plurality of examples showing an embodiment of the present invention will be described with reference to the drawings. First Embodiment As shown in FIG. 2, a golf club head 10 is formed of a main body 20 of the head and an upper shell thin section 30 welded to an upper portion of the main body 20. As shown in FIG. 4, the main body 20 of the head is made of stainless steel and has a shell shape. The main body 20 includes a surface portion 24 for hitting a ball, a bottom portion 25, a toe portion 26, a heel portion 27, a neck portion 28, and the like. A first notch 23 is formed in the upper part of the head (similar to the conventional head structure shown in FIG. 1). Conventionally, there are many heads, but molding is possible even if processed with a single material.

The upper shell thin section 30 has an arcuate curved shape, and the shape corresponds to the first cutout 23 of the main body 20. Therefore, when the upper shell thin section 30 is welded to the first cutout 23, a hollow head is formed.

A feature of the first embodiment is that the upper shell thin section 30 is made of a main thin section 32 (made of titanium) made of a material different from that of the main body 20 and of the same material as the main body 20. That is, it is manufactured by welding and joining the circular thin section 34 that is made.

As a manufacturing method, first, a flat main thin section is fitted into a flat plate-shaped material of the same material as the main body and welded. Cut along the contour corresponding to the outer periphery of the main thin section, and work to the curved surface. Next, the formed shell thin piece is welded to the cutout of the main body. As described above, this manufacturing method adds a one-step welding procedure to the conventional manufacturing method. However, welding of different materials that are difficult to process is easily performed on a flat surface, and difficult curved surface welding is performed using the same material. , Work becomes easier, and work efficiency and quality are improved.

Specifically, as shown in FIGS. 5 to 7, first, using a place from a titanium metal plate, a main plate portion 32 of a flat plate shape having a slightly smaller area corresponding to the contour of the notch portion is used. 'Cut. Next, as shown in FIG. 5, the stainless plate 36 is cut using a place so that the second notch 38 corresponding to the main thin section 32 'is formed. Subsequently, the main thin section 32 'made of titanium material is fitted into the second cutout 38 made of stainless steel, and welded and joined along the seam as shown in FIG. The stainless steel plate 36 is cut along a contour line (two-dot chain line in FIG. 6) 2 to 5 mm away from the outer peripheral edge of the main thin section 32 ′, and is processed into a curved shape at a place (planar shape). After cutting the flake, the curved shape may be processed, or the curved shape may be formed and then cut. Then, as shown in FIG. 7, a stainless steel shell thin piece 34 is formed on the outer peripheral edge of the main thin piece 32 of titanium so as to surround it.

The upper shell thin section 30 thus obtained is placed on the first notch 23 of the main body 20 and welded and joined along the arc-shaped curved edge of the main body 20 (upper shell thin section). After the portion 30 is welded to the basic shell 21, it may be welded to the front shell thin portion 22). Finally, polishing and painting are performed to complete the hollow head 10 having a smooth surface and completeness. The head 10 of the golf club of this embodiment has an advantage that the center of gravity is reduced because the main body 20 is made of stainless steel and the upper portion is made of titanium metal having a small specific gravity.

Further, the welding of the main thin portion 32 'and the circular thin portion 34' made of different materials can be easily processed in a flat plane. The upper shell thin section 30 is welded to the edge of the arc-shaped curved surface of the main body 20, but since the material of the joint portion is the same, the welding work is simplified, the work efficiency is improved, and the quality is improved. .

Second Embodiment The head of the golf club of the present invention is not limited to a structure in which a thin section having a low specific gravity is welded to the upper portion of the head 10 as in the first embodiment.

As shown in FIGS. 8 and 9, a notch 57 is formed on the surface of the head 40 where the ball is hit. The front shell thin section 60 is welded to the first cutout 57 of the main body 50 of stainless steel. The front shell thin section 60 on the surface on which the ball is hit is composed of a main thin section 62 of titanium metal and a circular thin section 64 of stainless steel. As in the case of the first embodiment, the manufacturing method is as follows: after welding into a flat plate shape, cutting into a curved surface using a place (forming a line groove 66 and then welding to the main body 50).

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a conventional golf club head.

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

FIG. 3 is a sectional view taken along line 3-3 in FIG. 2;

FIG. 4 is an exploded perspective view of a head of the golf club of FIG. 2;

FIG. 5 is a perspective view illustrating a manufacturing process of the upper shell thin section of the head of the golf club according to the first embodiment of the present invention;

FIG. 6 is a perspective view illustrating a manufacturing process of the upper shell thin section of the head of the golf club according to the first embodiment of the present invention;

FIG. 7 is a perspective view illustrating a manufacturing process of the upper shell thin section of the head of the golf club according to the first embodiment of the present invention;

FIG. 8 is a perspective view showing a golf club head according to a second embodiment of the present invention.

FIG. 9 is a sectional view taken along line 9-9 in FIG. 8;

[Explanation of symbols]

 Reference Signs List 20 main body 23 first notch 30 upper shell thin section 32 main thin section 34 circular thin section 38 second notch

Claims (5)

[Utility model registration claims] 1. A main body, an upper shell thin section provided with a main thin section and a circular thin section, wherein the main body is made of a metal material, has a shell shape, and has an arc-shaped curved surface on a surface portion. A first notch portion is formed, the main thin portion is made of a material different from the metal material, has an arc-shaped curved surface, and has a shape corresponding to the second notch portion of the circular thin portion; Welded to the second notch, the circular thin section is made of the same metal material as the metal material forming the main body, the outer peripheral edge corresponds to the first notch, the first notch A golf club head, wherein a hollow head is formed by welding. 2. The golf club according to claim 1, wherein the main body is provided with the first cutout at an upper portion thereof, and a specific gravity of a material of the main thin section is smaller than a specific gravity of a material of the main body. Head. 3. The golf club head according to claim 2, wherein the length between the inner peripheral edge and the outer peripheral edge of the circular thin section is 2 to 5 mm. 4. The golf club head according to claim 2, wherein a material of said main body is stainless steel, and a material of said main flake portion is titanium. 5. The golf club head according to claim 1, wherein the first notch is provided on a surface portion on which the ball is hit.