JPS6088569A - Production of metal head in golf club - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention The present invention significantly increases the strength of the punched shape of the face, which is the ball-hitting surface, to prevent defects such as dents at once, and furthermore, presses the neck part integrally with the upper part of the head. The object of the present invention is to provide a method for manufacturing a metal head for a golf club, which significantly increases the strength of the neck portion and prevents the risk of breakage, and allows the club head to maintain its function for a long period of time.

To explain in detail the present invention created to achieve the above object, in a golf club head, the shape of the face portion is such that the left side of the face surface is located at the tip of the head with respect to the grooved planar face surface. The front part of the head has a width that gradually increases as it goes forward, the heel side reinforcement part that gradually increases the width of the heel part connected to the face from the lower part of the heel part to the upper part, and A face portion having a slight width and a partially cutout-shaped reinforcing portion that is slightly inclined; and a side wall surface portion that is sloped in a bulge shape with the other edge other than the face portion reaching the upper part of the head. The main body of the sole and the upper part of the head with the neck part are made of sheet metal material in which the thickness of only the face part is thicker than that of the main body of the sole and the upper part of the head. This is a method for manufacturing a metal head for a golf club, characterized in that the metal head is formed by welding the mating portions of the metal head.

Next, to explain the present invention in detail, A is a metallic silver golf club head, which is composed of the following constituent members.

That is, a is a metallic silver face part, and the face part a
is the face surface 2 with respect to the flat face surface 2 with the groove l.
A head front part 5 whose width gradually increases as it goes to the left side toward the tip 4 of the head A, and the face surface.

2 and the heel side reinforcing part 7, which has a width of the heel part 6 connected to the upper part of the heel part 6 that gradually increases in width from the upper sole part 3 toward the upper part of the heel part 6, and has a slight width above the face surface 4, In addition, the face portion a is constituted by a partially cut-out reinforcing portion 8 that is slightly inclined. b is the main body of the sole, which consists of the following structure. That is, the sole main body part 6 is constituted by an inclined side wall surface part 9 in which the opposite edges of the sole part 3 except for the front part and the face part a are bulged in a height reaching the head upper part C. C is the upper part of the head, and in the upper part C of the head there is a continuous neck part 10. Again 1
Reference numeral 1 indicates a notch for making it easier to squeeze the upper part C of the head when punching it with a press, and reference numeral 12 indicates a mating part formed during molding of the neck part 10, and these parts are explosively bonded to each other. Reference numeral 13 denotes a reinforcing member for the face portion a, which is welded to the back surface of the face portion a. 14 is a lightweight member that fits into the main body of the sole.

The face part a, sole main body part and upper part C of the head as described above are temporarily fixed from the state shown in the second figure to the state shown in the first figure, and it is confirmed whether the shape is normal for the head body. After doing that, I put on the book.

At this time, it goes without saying that the notch ti and the joining part 12 of the neck part lO are also welded. Note that the thickness of the face portion a is made of a metal plate that is thicker than the thickness of the main body portion of the sole and the upper portion C of the head.

15 is a shaft.

(1) The present invention is as described above, and in particular, the shape of the face portion is such that the width of the groove (=J) is gradually widened from the left side of the face surface toward the tip of the head with respect to the flat face surface. The front part of the head is reinforced, the #A part of the heel part connected to the face is gradually widened from the lower part of the heel part to the upper part of the heel part, and the upper part of the face part is slightly reinforced. It has a width and is formed with a partially cut-out reinforcing part that tilts slightly, and is formed (pressed) in a shape that is completely different from a flat face surface with simple grooves, so it has high strength. This has the advantage of eliminating the problem of a simple planar face shape, which would cause the club face to become dented due to the strong impact force generated when hitting the ball.

(2) Furthermore, in the present invention, since the neck part is formed by punching in a shape extending from the upper part of the head, the strength is significantly increased and there is no risk of breakage, unlike when only the neck part is simply welded. was prevented from occurring.

(3) Furthermore, as a metal head, the present invention can sufficiently withstand the impact force when hitting a ball, and also prevents the neck from breaking, so the club head function can be maintained for a long period of time. It has many excellent advantages.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a club head manufactured by the metal head manufacturing method for a golf club of the present invention, Fig. 2 is an exploded perspective view of the club head, and Fig. 3 is a planar face with grooves constituting the club head. FIG. 4 is a front view of the same, and FIG. 5 is a side view of the same. A...club head, a...face, l...
Groove, 2...Face surface, 3...Sole part, 4.Fist...
Tip part, 5. Tatami/head front part, 6... Heel part, 7
No. 0 - Heel side reinforcement part, 8 - Reinforcement part, b - 00 Sole main part, Cφ - Head upper part, 9 - Wall part 1, 10 - Neck part. Figure 2

Claims (1)

[Claims] In a metal head of a golf club head, the shape of the face part is connected to a front part of the head whose width gradually increases from the left side of the face surface to the tip of the head with respect to the flat face surface with grooves. The width of the heel part is gradually increased from the lower part of the heel part toward the three sides.The heel side reinforcement part has a slightly wider width above the face surface. A face portion having a reinforcing portion, a sole main portion having an inclined side wall surface portion in a bulge shape with the other edge other than the face portion reaching the upper portion of the head, and a neck portion extending above the head portion. , the face part is made of sheet metal material that is thicker than the main body part of the sole and the upper part of the head and is separately provided in advance, and the mating parts of the three members are explosively bonded to form the face part. A method of manufacturing metal heads for golf clubs.