JPH0716535B2 - Iron club head manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an iron club head for golf, and more particularly to a club head of a type in which a heavy object for obtaining a constant head weight is inserted into an iron club head formed in a hollow body. The present invention relates to a manufacturing method.

[0002]

2. Description of the Related Art Conventionally, the weight of a head of an iron club formed by joining a plurality of members formed of metal plates into a hollow body is adjusted as described in Japanese Patent Publication No. 39879/39. A general method is to melt and inject metal such as zinc into the inside of the part.

[0003]

In the above-described method of injecting and filling molten metal into the hollow portion of the head, the molten metal contracts when it solidifies to form a gap in the hollow portion, which results in stability of the head. There is also a problem with reliability, and there is also a problem that an abnormal sound is generated at the time of hitting a ball, which causes a feeling of strangeness, and the weight of the head cannot be freely adjusted.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a plurality of members formed of metal plates are combined to form a hollow iron head, and a hollow iron head is fixed inside the hollow head. The solid embedding material for obtaining the head weight is inserted and temporarily fixed at a predetermined position, and then the hollow head is filled with powdered wax and heated to heat the embedding material at the predetermined position in the hollow head. Provided is a method of manufacturing an iron club head that is brazed and fixed to an iron club head.

[0005]

According to the present invention having the above-mentioned structure, the solid embedding material inserted in the hollow head is firmly fixed in the hollow head by brazing, so that the embedding material itself changes after the insertion. There is nothing, the head is stable,
It is possible to obtain an iron head having a desired weight by appropriately selecting an embedding material without generating an abnormal sound when hitting a ball.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. Referring to FIG. 4, an iron club head according to the present invention has a metal plate A in which a face 1 and a half-divided portion 2 of the neck are integrally formed, a sole 3 and a back surface portion 4 and a half-divided portion 5 of the neck. The formed metal plate B is joined by welding or the like to be integrated to form the hollow head 10 as shown in FIGS. 1, 2 and 3.

Next, the hollow portion 6 of the hollow head 10 (first
Insert a solid embedding material C to obtain a constant head weight. The embedding material C is prepared in various weights, sizes, and shapes, and a desired material is selected from them and used. Then, the embedding material C is temporarily fixed to a predetermined position in the hollow portion 6 by adhering it in the hollow portion 6 with an adhesive or pressing and fixing it in the hollow portion 6.

Then, in the hollow portion 6, zinc-copper or tin-
A brazing powder made of an alloy such as lead is filled and heated and melted. The melted powdered brazing material flows into a portion where the hollow portion 6 and the embedding material C are in contact with each other, and the embedding material C temporarily fixed is brazed to that position. In this way, the solid embedding material C for obtaining a constant head weight is firmly fixed at a predetermined position in the hollow portion 6 of the head.

Therefore, according to the present embodiment, it is possible to select an embedding material having a desired weight and shape and firmly fix the embedding material at a predetermined position of the hollow head, so that the embedding material having a desired weight and a desired center of gravity position can be stably obtained. A reliable and reliable iron club head can be provided.

[0010]

According to the present invention, the solid embedding material for obtaining a constant head weight is temporarily fixed in the hollow head and then fixed in that position by brazing. Since it can be firmly fixed to a predetermined position, a predetermined center of gravity position and head balance of the head can be obtained as expected, and no abnormal sound is emitted at the time of hitting the ball. Further, by appropriately selecting and using an embedding material having various weights, the weight and the center of gravity of the head can be arbitrarily set.

[Brief description of drawings]

1 is a cross-sectional view of an iron club head manufactured according to the present invention, taken along line XX of FIG.

FIG. 2 is a front view of the iron club head of FIG.

FIG. 3 is a bottom view of the iron club head of FIG.

FIG. 4 is a bottom view showing each component before the iron club head of FIG. 1 is configured.

[Explanation of symbols]

 A ... Metal plate B ... Metal plate C ... Embedding material 1 ... Face 2 ... Neck half-split part 3 ... Sole 4 ... Back part 5 ... Neck half-split part 6 ... Hollow part 7 ... Wax 10 ... Hollow head

Claims (1)

[Claims] 1. A hollow iron head is formed by joining a plurality of members formed of metal plates, and a solid embedding material for obtaining a constant weight of the head is inserted into the hollow head to set it at a predetermined position. A method for manufacturing an iron club head, which comprises temporarily fixing and then filling the hollow head with a brazing powder and heating it to braze and fix the embedding material at the predetermined position in the hollow head.