JP3172419B2 - Metal golf club head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an improvement in a metal golf club head.

[0002]

2. Description of the Related Art In recent years, so-called metal wood made of metal has been awarded instead of a wooden driver. As a manufacturing method, a method by casting using a lost wax method is known, but the thickness of the product tends to vary,
There is also a problem in how to balance. Therefore, fading scan section the golf club head having a predetermined shape, a crown portion, and 3 dividing the sole portion, proposals for a golf club by joining them together with the shaft has been made (Japanese Utility Model 61-33972 JP reference).

[0003]

SUMMARY OF THE INVENTION The present invention provides a metal golf club head formed by joining various members, which increases the joining strength and provides a well-balanced metal golf club head.

[0004]

According to the present invention, there is provided a golf club head in which a face portion and a hosel portion of the present invention are integrally formed, and are combined with a crown portion and a sole portion, from the hosel side of the face portion. At the opposite end, an extension is formed that continuously extends rearward. In the extension on the hosel side, the crown has a joint surface with the face on the front surface and the side surface on the hosel side. The metal golf club head is characterized in that the extension of the extension is larger on the hosel side. Further, in the extension portion opposite to the hosel portion, the joining surfaces of the crown portion and the sole portion with respect to the face portion are formed so as to be different from each other.

[0005] Projections protruding inward are formed at the end of the extension and the end of the butt joint such as the end of the crown or sole joined thereto, respectively. The protruding portions are combined on the inner side, a groove portion is provided on the outer side slightly deviated from the combined portion, and the club head is welded at the groove portion.

The material constituting the present invention may be a conventionally known metal material, but a superplastic Al-based alloy material obtained by a rapid solidification method is suitable. In particular, when at least the face portion is made of such a superplastic Al-based alloy material, the characteristics of the material such as high strength, high elastic modulus, and high hardness can be utilized, and a golf club head having excellent characteristics is formed. . The following are examples of the superplastic Al-based alloy material used in the present invention. Of course, these are examples, and there are other materials that can be applied to the present invention.

[0007] _{Al 78 Ni 12 Mm 10 Al 92} Ni 4 Fe 1 Mm 3 Al 87 Ni 8 Y 5 Al 89.5 Ni 8 Zr 2.5 Al 89.6 Ni 8 Zr 2 Mg 0.5 Al 90 Ni 7 Zr 2 Cu 1 Al 91.8 Ni 6 Nb _{0.2 Hf 1 Ce 1 Al 92.5 Ni} 5 Fe 1 Zr 1 Ta 0.5 Al 93.5 Ni 2 V 1 Y 1.5 Ti 2 Al 87 Co 8 Si 1 Cu 2 Nb 1 Zr 1 Al 91 Mn 2 Mg 2 Zn 1 Y 4 Al 87.5 Ni ₇ Co ₁ Cr _0.5 Ca _0.5 Hf ₁ Ti _2.5 Al _88.7 Ni ₈ Cr ₁ Mg _0.2 Zn _0.1 Ce _{2 In the} present invention, an extension portion extending rearward is formed at the hosel side of the face portion and at the opposite end thereof. As a result, the joining surface between the body portion and the face portion, which are composed of the crown portion and the sole portion, does not become straight, but is joined in a key shape at the extension portion, thereby improving the joining strength.

[0008] Further, the protruding portions projecting inward of the butt joint portion are formed so as to mesh with each other, and a groove portion is provided outside the mesh portion so as to be displaced from the mesh portion.
Therefore, by welding, the welding is easy and the bonding is further strengthened.

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded view of each member of the golf club head of the present invention, wherein 1 is a face portion, 2 is a hosel portion,
The fail portion 1 and the hosel portion 2 are formed integrally. 3 is a crown part, 4 is a sole part. An extension 5 is provided on the hosel 2 side of the face 1, and an extension 6 is provided on the opposite end thereof toward the rear.

FIG. 2 shows an example of an assembled state, in which the face portion 1, the crown portion 3 and the sole portion 4 are bent in a key shape at the extension portion 6 to increase the bonding strength. . In the figure, reference numeral 7 denotes a shaft. FIG. 3 shows a cross section of a butt welded portion, which is formed so as to cover the inside of the end of the face portion 1 and the outside of the end of the sole portion 4.
A protruding portion 8 is formed on the sole portion so as to receive the tip of the face portion 1.
One is united. A groove 12 is formed in the face portion 1 and the sole portion 4. The relationship between the crown 3 and the face 1 on the opposite side is such that a projection 8 is formed on the outside of the end of the crown 3 so that the inside of the end of the face 1 is covered.
A protruding portion 10 is formed on the face portion 1 so as to receive the tip of the crown portion 3, and both are combined by a contact surface 11. A groove 12 is formed on the outer joint surface between the crown 3 and the face 1. The position of the groove 12 is shifted with respect to the contact surface 11. Each groove 12 is welded 13. FIG. 4 is an enlarged view of a joint portion between the crown portion 3 and the face portion 1. In addition,
In the above description, an example in which the welded structure between the face portion 1 and the sole portion 4 (the former) and the welded structure between the crown portion 3 and the face portion 1 (the latter) are used together is disclosed. In the present invention, either the former or the latter is used. It is also possible to use either one of the welding structures. In addition, these welded structures are sole portions 4
The present invention can also be applied to a welded structure between the crown portion 3 and the welding portion.

In FIG. 3, if the protruding portion 8 of the sole portion 4 is brought into contact with the inner peripheral surface of the face portion 1 (not shown in FIG. 3), the impact load applied to the face portion is directly received by the welded portion. Instead, the load is received at the projecting portion, so that the load on the welded portion can be reduced. Protrusions 8 and 10 are provided on the crown 3 and the face 1 so that
The same effect can be expected by displacing the position of 2 and the contact surface 11. This is particularly effective when welding with the face portion 1. FIG. 5 shows an example in which a member 15 (for example, a sole member) is joined to a member 14 (for example, a face member) from an end side surface. That is, the step 1 is attached to the end of the member 14.
8, the end of the member 15 is overlapped from the side surface side to form a groove 16 and welded 17 there. By joining in this way, the joining is more stable than joining by simply joining the tip of the member 15 to the tip side surface of the member 14, and the joining becomes strong.

FIG. 6 is an explanatory view showing, for example, an example of a method of forming the crown portion 3. A forming portion (cavity 21) is provided between an upper mold 19 and a lower mold 20, and the upper A metal material for forming is pressed in by a stem 22 through a material charging hole 23 provided in 19, and the crown portion 3 is formed by plastic working. The projection 8 at one end of the crown 3 is formed at the same time. In this molding, the heating body 24 is used to hold the upper mold 19.
And the lower mold 20 are heated, and the temperature is adjusted by a thermocouple 25.

[0013]

According to the present invention, the members constituting the metal golf club can be easily aligned and temporarily held at an appropriate position, and are firmly joined, and the strength required as a metal head can be obtained. As a result, a metal golf club having a stable flight distance and directionality can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a constituent member according to an embodiment of the present invention.

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

FIG. 3 is a cross-sectional view showing an embodiment of a joint according to the present invention.

FIG. 4 is a perspective view of an embodiment of a joint.

FIG. 5 is a cross-sectional view of another embodiment of the joint.

FIG. 6 is an explanatory view of manufacturing a member according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 face portion 2 hosel portion 3 crown portion 4 sole portion 5, 6 extension portion 7 shaft 8, 9, 10 projecting portion 11 contact surface 12 groove 13 welding 14, 15 member 16 groove 17 welding 18 step portion 19 Mold 20 Lower mold 21 Molding part 22 Stem 23 Material charging hole 24 Heating body 25 Thermocouple

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-317466 (JP, A) JP-A-7-275408 (JP, A) JP-A-6-315550 (JP, A) JP-A-6-315550 142236 (JP, A) JP-A-7-60477 (JP, A) JP-A-6-170019 (JP, A) Registered utility model 3013980 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A63B 53/00-53/16 B23K 33/00

Claims (3)

(57) [Claims] And 1. A face portion and the hosel portion is molded integrally, which the crown portion, a golf club head formed by combining joining the sole portion, the rearward opposite ends thereof from the hosel portion side of the face portion Forming an extension that continuously extends toward the hosel, in the extension on the hosel part side,
A metal golf club head characterized in that the crown portion has a joint surface with the face portion on the front surface and the side surface on the hosel portion side, and the extension of the extension portion increases on the hosel portion side. 2. The metal golf club head according to claim 1, wherein a joining surface of the crown portion and the sole portion with respect to the face portion is formed differently in the extension portion opposite to the hosel portion. 3. An inwardly projecting portion is formed at each of the ends of the extension portion and the ends of the crown portion or the sole portion joined to each other, such as the end portion of the sole portion.
2. The metal golf club head according to claim 1, wherein the protruding portions are combined on an inner side, a groove is provided on an outer side slightly shifted from the combined portion, and the groove is welded at the groove.