JPS6255432B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a golf club head made of fiber-reinforced plastic reinforced with carbon fibers, metal fibers, fibers having the same properties as these, or composite fibers thereof. The objective is to rationally increase the strength of the ball, increase the repulsive force of the ball, and impart durability.

Wooden heads such as persimmon wood heads, metal heads (referred to as pull-down metal heads), and carbon fiber reinforced plastic heads (hereinafter referred to as carbon heads) are popular among the heads of golf clubs, commonly referred to as wood clubs. .

Wooden heads have variations in the material themselves, and are prone to warping and splitting due to the effects of dryness and humidity. Since metal heads have a metal outer shell, they produce a metallic sound when the ball is hit, which is significantly different from the sound of a wooden head, so there is a tendency for some to dislike it, and metal fatigue may occur with repeated use, leading to damage. There was a risk that it would happen. In this respect, carbon heads are popular among golfers because they produce a sound similar to that of wooden heads, have excellent ball repulsion, and are highly resistant to fatigue.

However, in manufacturing carbon heads, the weakest neck part is reinforced by taking into consideration the arrangement of the carbon fibers and by arranging braided or rope-shaped fibers, but other face areas and the center of the body are reinforced. In the partial region, fibers are randomly interposed. Therefore, in the molded head, the fibers are deflected, and there are parts with many intervening fibers and parts with few intervening parts.In particular, the fiber arrangement direction is random, which causes variations in strength, making it difficult to obtain a head of uniform quality. It was hot. In particular, if the fibers are deflected or arranged randomly in the face area where the ball is repeatedly hit, a difference will occur in the repulsive force of the ball when the ball is hit.
Areas with less fiber will dent or crack due to repeated impact.

The present invention has improved such drawbacks, and an embodiment thereof will be described with reference to the drawings. In the head of a golf club in which a core body 1 made of any material is placed in a mold and the outer periphery is molded with fiber reinforced plastic, fiber reinforced plastic is used. The face region 2 is arranged in a direction 3 that is substantially parallel to the sole and the face, the neck region 4 is arranged in a direction 6 that is substantially parallel to the shaft axis, and the center part and the part opposite to the face are arranged in a direction 3 that is substantially parallel to the sole and the face. This is a golf club head made of fiber-reinforced plastic, characterized in that the heads are arranged radially 7 and 8 from the base.

In another embodiment, the arrangement of the fibers is changed, with the face region 2 being arranged in the vertical and horizontal directions 3, the neck region 4 being braided or woven, and the central region 7 being arranged in the direction 8 near the face region. It is characterized by being arranged. Other embodiments will be omitted, but in short, this invention is characterized in that the direction of fiber arrangement is different between the face region and other regions including the neck and center region. Therefore, for example, carbon fibers can be used alone or in combination with metal fibers as appropriate.

In this invention, as described above, the face area 2 where the ball is repeatedly hit is made of fibers substantially parallel to the sole and the face 3.
Alternatively, since they are arranged in the vertical and horizontal directions 3, the hardness is significantly improved and the ball has high impact resistance, so the repulsive force of the ball is increased. The neck area 4 is formed by arranging fibers in a direction 6 substantially parallel to the shaft axis, or by using braided or woven fabric, which is known in itself, but the other areas 7 including the center area are arranged radially 7 from the base of the neck.
Arrange the fibers in 8. Thus, the fiber direction of the central portion is oriented in the direction where a large impact stress is applied when the ball is hit, that is, in the direction of the face region and the neck region, thereby improving the strength of the entire head. Therefore, the above-mentioned drawbacks that tend to occur in conventional heads made of fiber-reinforced plastic in which fibers are interposed randomly are eliminated, and not only the durability is excellent, but also the flight distance of the ball is increased.

[Brief explanation of the drawing]

The drawings show an example of the present invention, and FIG. 1 is a sectional view of an example of molding, and FIGS. 2 and 3 are explanatory views of the fiber arrangement direction. 1...core body, 2...face region, 3...substantially parallel,
4...Net area area, 5...Mandrel or core extraction, 6
...Substantially parallel, 7...Central portion, 8...Direction, 9...Mold.

Claims (1)

[Scope of Claims] 1. A head of a golf club molded from arbitrary fiber-reinforced plastic, characterized in that the arrangement direction of arbitrary fibers is different in the face region, neck region, and other regions including the center region. The head of a golf club. 2. The golf club head according to claim 1, which has a core made of any material. 3 Claim 1 having a sole plate
The head of the golf club described in Section 1.