JPS58175579A - Golf club head - 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] This invention relates to a rad for golf clubs made by Fustic.

BACKGROUND ART Conventionally, golf club heads, particularly wood heads, have generally been made of bar material. However, since the supplementary material itself is a natural material, it requires a great deal of time and effort to commercialize as a golf club head (hereinafter referred to as the head), and it also has drawbacks such as poor yield. was. In addition, there have been problems in that the resources of the supplementary materials themselves have decreased, making them difficult to obtain. Therefore,
/j! As described in No. 06, a head made of glass fiber reinforced planutic (hereinafter abbreviated as GFRP), which is made by hardening glass fiber with polyester resin, is known. However, in this GFRP head, a method of reinforcing the neck by arranging glass fibers vertically and spirally has been adopted, but the process of arranging the fibers is extremely time-consuming and If the fibers are not properly arranged in the direction and the helical direction, there is a risk that the strength will be reduced in response to stress such as bending, compression, and tension caused by the impact stress generated when hitting a ball. In other words, if the ratio of fiber arrangement in the longitudinal direction is high and the ratio of fiber arrangement in the helical direction is low, it will be strong against bending stress, but will peel off against torsional stress and will easily break at the neck part. He had a deficiency. In addition, if the ratio of fiber arrangement in the longitudinal direction is low and the ratio of fibers in the helical direction is high, it will be weaker against bending stress and stronger against torsional stress, resulting in disadvantages such as vertical cracks in the neck area. It had

Therefore, the invention of Utility Model Application Publication No. 60-90711 has been made, but in this invention, by replacing the former 01' RP head with δ and making it a CFRP head,
Although the head weight can be reduced due to the lighter specific gravity, the neck part, where the fiber content is particularly thin, inevitably decreases.
The strength of the neck portion was weak, and the neck portion was prone to breakage due to impact stress when the ball was hit.

In view of these conventional drawbacks, the present invention has been made to provide a head made of fiber-reinforced plastic that has increased strength at the neck portion of the head, has good productivity, and is durable.

To explain the present invention based on the drawings, a sole plate A is arranged on the lower surface of the head, and a mandre/I//
A braided or woven fabric 3 made of carbon or other arbitrary fibers impregnated with a synthetic resin is coated on the outer periphery of a neck core material 2 having an approximately neck shape through which a core material 2 is inserted and placed in a mold. This is a head for golrefukuhup made of fiber-reinforced plastic, characterized in that the outer shell is made of synthetic resin mixed with carbon or other arbitrary fibers, and the shaft hole is formed by removing the mantle shell.

In the head of the present invention, the neck region is reinforced by a neck core material 2 and a braid or fabric 3 of synthetic resin-impregnated carbon or other arbitrary fibers.゛Even though the density of the braid, fiber braid, or woven fabric 3 becomes higher and the fiber content in the neck portion reaches 60% or more, the core material for the neck prevents an increase in the weight of the neck portion, and When a braided or woven fabric 3 is used, the fibers spread along the shape of the neck/core material 2 as shown in FIG. It has a better balance of strength and has a well-balanced strength against bending stress and torsional stress, so there is no difference in strength depending on the fiber arrangement direction or arrangement ratio as in the past, and it is extremely durable. Thus, in the head of the present invention, it is possible to supply a head for a Bollef club made of any fiber-reinforced plastic of carbon fiber, which has good productivity, is less likely to break from the neck portion, and is durable. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the manufacturing process of a golf club head according to the present invention. FIGS. 2 and 3 are perspective views showing an example of the neck portion reinforcing means for a golf club head according to the present invention. ／・″″Mandre／ ,! II 11. Core material for neck 13... Braid or woven fabric, G... Outer shell, S... - sole plate, Otsu... Core body, 7. Fist/mold. Procedural amendment dated October 6, 1980, Mr. Commissioner of the Patent Office■ Indication of the case 1982 Patent Application No. 59286 2
Name of the invention Golf club head 3 Relationship to the case of the person making the amendment Patent Applicant 4 Date of amendment order September 9, 1980 ``Additional relationship'' was established in the specification stating the relationship to the original invention Correct as shown in the attached sheet. Description 1, Title of the Invention Golf Club Bed 2, Claim 1 In a golf club head made of optional fiber-reinforced plastic, a neck core having a substantially neck shape is provided in the neck region of the head having a sole plate. Interpose the material,
A neck reinforcing layer is formed on the outer periphery of the head and covered with a braided or woven fabric made of carbon or other arbitrary fibers, and the outer shell of the head is made of synthetic resin mixed with carbon or other arbitrary fibers. A golf club head made of fiber-reinforced plastic. 3. Detailed Description of the Invention The present invention relates to a golf club head made of carbon or any other fiber-reinforced plastic. Conventionally, it has been common to use bar material for golf club heads, particularly wood heads. However, since the supplementary material itself is a natural material, it requires a great deal of time and effort to commercialize as a golf club head (hereinafter referred to as the head), and it also has drawbacks such as poor yield. was. In addition, the resources of the supplementary materials themselves have decreased, making it difficult to obtain them. Therefore, in 1977-
As proposed in No. 15505, it is made of glass fiber-reinforced plastic (glass fiber reinforced with polyester resin).
A head made of GFRP (hereinafter abbreviated as GFRP) is known. However, in this GFRP head, a method of reinforcing the neck part by arranging glass fibers vertically and spirally has been adopted, but the process of arranging the fibers is extremely time-consuming, and in addition, If the fibers are not properly arranged in the direction and the helical direction, there is a risk that the strength will be reduced in response to stress such as bending, compression, and tension caused by the impact stress generated when hitting a ball. In other words, if the ratio of fiber arrangement in the longitudinal direction is high and the ratio of fiber arrangement in the helical direction is small, it will be strong against bending stress but weak against torsional stress, so it will easily break at the neck part. It had the disadvantage of In addition, if the ratio of fiber arrangement in the longitudinal direction is low and the ratio of fibers in the helical direction is high, it will be weaker against bending stress and stronger against torsional stress, resulting in disadvantages such as vertical cracks in the neck area. It had -Therefore, the invention of Utility Model Application Publication No. 50-9074 has been made, but in this invention, by replacing the former head made of G11'RP with a head made of 0FRP,
Although the head weight can be reduced due to the lighter specific gravity, the neck part, where the fiber content is particularly thin, inevitably decreases.
The strength of the neck portion was weak, and the neck portion was prone to breakage due to impact stress when the ball was hit. In view of these conventional drawbacks, the present invention has been made to provide a head made of fiber-reinforced plastic that has increased strength at the neck portion of the head, has good productivity, and is durable. To explain the present invention based on the drawings, a sole plate A is arranged on the lower surface of the head, and on the outer periphery of a neck core material 2 having a substantially neck shape with a mandrel 1 inserted in the neck region,
A braid or fabric 3 made of carbon or other arbitrary fibers impregnated with a synthetic resin is covered and placed in a mold, and an outer shell 4 is formed from a synthetic resin mixed with carbon or other arbitrary fibers in the gap between the mold and the mold. This is a golf club head made of fiber reinforced plastic, characterized in that the mandrel 1 is removed to form a shaft hole. In the head of the present invention, the neck region is reinforced by a neck core material 2 and a braid or fabric 3 of synthetic resin-impregnated carbon or other arbitrary fibers. In other words, even though the fiber braid or fabric 3 has a high density and the fiber content in the neck portion is 60% or more,
Neck core material 2 prevents weight increase in the 4th neck part,
In addition, when a braided or woven fabric 3 is used, the fibers spread along the shape of the neck core material 2 as shown in FIG. It has a better balance of strength and has a well-balanced strength against bending stress and torsional stress, so there is no difference in strength depending on the fiber arrangement direction or arrangement ratio as in the past, and durability is significantly improved. . Thus, with the head of the present invention, it is possible to supply a golf club head made of carbon or other fiber-reinforced plastic that has good productivity, is less likely to break at the neck portion, and is durable. 4. Additional relations This invention relates to a golf club made of fiber-reinforced plastic which is implemented by interposing a neck core material having a substantially neck shape in the neck region of the head of Patent Application No. 25629 of 1982. It is an invention of 5. Brief Description of the Drawings FIG. 1 is a sectional view showing an example of the manufacturing process of a golf club head according to the present invention. FIGS. 2 and 8 are perspective views showing an example of the neck portion reinforcing means for a golf club head according to the present invention. ■...O mandrel, 2...core material for neck, 3...
Braided or woven fabric, 4... Outer shell, 5... Sole plate, 6...
... core body, 7... mold.

Claims (1)

[Claims] / A head for a Bollef club made of optional fiber-reinforced plastic, in which a neck core material having a substantially neck shape is interposed in the neck region of the head having a sole plate, and a braid or fabric made of arbitrary fibers made of carbon or other fibers is attached to the outer periphery of the neck core material. A neck reinforcement layer is formed that covers the
A golf club head made of fiber-reinforced plastic, characterized in that the outer shell of the head is made of synthetic resin mixed with carbon or other arbitrary fibers.