JPH0418593Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a carbon head for a golf club, which is commonly called a head. More specifically, the present invention relates to a carbon head for a golf club made of a carbon fiber reinforced composite material containing carbon fiber coated with nickel or its alloy as a reinforcing material.

Conventionally, persimmon (persimmon wood) has been mainly used for golf club heads, but recently with the advent of two-piece balls, metals and fiber-reinforced resin (FRP) have been used to improve the repulsive force of the head.
etc. have come to be used. However, metal alone has shape limitations due to its high density, and fiber-reinforced resin has fast vibration damping, and especially when hitting the recently introduced two-piece ball, the sound of the ball does not have a lingering sound, giving the player sufficient satisfaction. I was unable to give any.

The inventors of the present invention have carefully studied these problems and found that by using carbon fiber whose fiber surface is coated with nickel or its alloy as a reinforcing material, the characteristics of both metal and fiber-reinforced resin can be utilized to improve the player's performance. We have now found a golf club that can meet our needs.

The present invention is as follows.

A carbon fiber head for a golf club made of a carbon fiber reinforced composite material containing carbon fiber coated with nickel or its alloy as a reinforcing material, and a carbon fiber fabric or braid coated with carbon fiber or nickel or its alloy as a reinforcing material. A golf club head that integrates a hosel made of carbon fiber reinforced thermosetting resin composite material.

The head of such a golf club has appropriate vibration damping characteristics, and a wood club equipped with this carbon head emits a lingering hitting sound, dramatically improves flight distance, and provides a feel and flight that fully satisfies the player. Can give distance.

In the present invention, carbon fiber refers to ordinary carbon fiber for FRP, which also includes graphite fiber.

Carbon fibers are coated with nickel or an alloy thereof, and nickel alloys include, for example, alloys of nickel with iron, chromium, molybdenum, and the like. To coat carbon fibers with nickel or its alloy, methods such as electroplating, chemical plating, vacuum deposition, and thermal spraying can be used.

The thickness of the coating metal on the fiber surface is usually about 0.01
~2.0 microns, preferably 0.05-1.0 microns. If the thickness of nickel or its alloy is less than 0.01 micron, good vibration damping properties cannot be obtained;
If it exceeds 2.0 microns, the vibration damping properties will deteriorate, and in either case, it will not be possible to provide the player with a satisfactory feel at impact.

In the present invention, carbon fiber coated with nickel or its alloy is mainly used in the form of woven fabric, braided cord, or cut fiber.

The reinforcing material contains 10 to 80% by weight of carbon fiber coated with nickel or its alloy with a length of 1 to 30 mm, and the matrix resin includes epoxy resin, phenolic resin, unsaturated polyester resin,
Thermosetting resins such as polyimide resins and furan resins,
20 thermoplastic resins such as ABS resin, polyamide resin, polycarbonate resin, polysulfone resin, etc.
Preferably, it contains up to 90% by weight.

Various micro balloons: glass, carbon,
Hollow spheres made of phenolic resin, etc. (specific gravity 0.15
~0.35, particle size 5~250μ) to have an appropriate specific gravity that allows for a low center of gravity design.

The present invention will be explained with reference to the drawings.

FIG. 1 shows a cross-sectional view of the carbon head. In the figure, 1 is the hosel part, 2 is the face, 3 is the inner layer of the head made of carbon fiber reinforced composite material coated with nickel or its alloy, 4 is the outer layer of the head, 5 is the hollowed out part of the main body, and 6 is the shaft attachment port. .

The hosel part 1 is made of a carbon fiber-reinforced thermosetting composite material such as a carbon fiber fabric or a braid coated with carbon fiber, nickel, or an alloy thereof as a reinforcing material. This strengthens the area where the hosel part and the head body come into contact. The face portion 2 is made of various carbon fiber-reinforced composite materials coated with carbon fiber, nickel, or an alloy thereof as a reinforcing material, such as a carbon fiber-reinforced thermosetting resin composite material (hereinafter referred to as carbon fiber-reinforced thermosetting resin composite material).
CFRP), carbon fiber reinforced thermoplastic resin composite material (hereinafter referred to as CFRTP), carbon fiber reinforced metal composite material (hereinafter referred to as CFRM), or a hybrid material with other composite material layers. The head body is composed of an inner head layer 3 and an outer head layer 4 made of a carbon fiber reinforced composite material such as CFRP, CFRTP, CFRM, etc. coated with nickel or its alloy. The carbon fiber or the carbon fiber coated with nickel or its alloy as a reinforcing material of the head outer layer 4 may be in the form of a woven fabric, a cut fiber, or a combination of a woven fabric and a cut fiber.

Example: Acrylic carbon fiber Besphite MC (manufactured by Toho Beslon Co., Ltd.) whose fiber surface was coated with nickel with a thickness of 0.3 microns was cut into 6 mm pieces as a reinforcing material.
The pellets were filled with polycarbonate resin to a concentration of 20% by weight, and the carbon head body was molded by injection molding. A hosel part made of epoxy resin reinforced with carbon fibers was glued and integrated into this. The carbon head thus obtained had an elegant finish on the outside with a color tone not seen in conventional carbon heads and full of luxury.

A general-purpose sole plate and a steel shaft were attached to this carbon head to serve as a driver (No. 1 wood), and a ball hitting test was conducted. As a result, the hitting sound,
It was an easy-to-swing carbon club that gave the player a satisfying feeling with perfect shot feel, flight distance, and direction.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of the carbon head.

Claims (1)

[Scope of utility model registration request] A carbon fiber head for a golf club made of a carbon fiber reinforced composite material containing carbon fiber coated with nickel or its alloy as a reinforcing material, and a carbon fiber fabric or braid coated with carbon fiber or nickel or its alloy as a reinforcing material. A golf club head that integrates a hosel made of carbon fiber reinforced thermosetting resin composite material.