JPH01131682A - Golf club head - Google Patents

Abstract

PURPOSE: To improve characteristics such as rigidity, wear resistance, attenuation of vibration and response to vibration in a golf club head by arranging a long fiber reinforced thermoplastic resin for a face member or a face insert material of the golf club head. CONSTITUTION: To obtain a golf club head 1 in which a long fiber reinforced thermoplastic resin 5 is arranged for a face insert material 3 of the golf club head 1, a transparent resin plate is used for a surface material 4 and the long fiber reinforced thermoplastic resin 5 is interposed between prepreg sheets as strength member 6 to mold. The long fiber reinforced thermoplastic resin comprises a fiber material and a matrix resin to improve and maintain characteristics of the golf head by the attenuation of vibration, toughness and the like intrinsic to the fiber material while higher flexibility of the matrix resin causes little effect of the rigidity. Moreover, in the structure, a curved surface, a step or the like can be easily molded.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a golf club head.

<Conventional technology> In recent years, golf club heads have been made of metal heads made of metals such as aluminum alloys and stainless steel, as well as FR heads made of metals such as aluminum alloys and stainless steel, in addition to the conventional persimmon heads made of bar materials.
FRP heads using P (thermosetting fiber-reinforced plastics) material are becoming popular, and long fibers, short fibers, whiskers, etc. are used as FRP reinforcing fibers. As matrix resins, thermosetting resins such as epoxy resins are mainstream, and thermoplastic resins such as ABS and polycarbonate are also used in some cases. Further, various materials are used for the face portion of the golf club head for each head body. The Versimmon head uses ABSφ vulcanized fiber, FRP (carbon fiber + epoxy resin), and a face insert material that uses short fibers of reinforcing fibers such as carbon fiber and glass fiber in ABS.

Metal heads are generally made of the same material as the head body, and FRP heads are fitted with a face insert similar to the persimmon head mentioned above,
There are also products on the market that use silicon carbide, which has excellent wear resistance, as a reinforcing fiber only in the surface layer.

However, when considering the face portion of a golf club head from the physical properties perspective, it is important to consider wear resistance, vibration damping properties,
A very difficult problem was how to design a well-balanced vibration response and other mechanical characteristics that influence each other.

(Problems to be Solved by the Invention) In view of these conventional drawbacks, the present invention provides a golf club head that improves the properties of the golf club head, such as rigidity, wear resistance, vibration damping performance, and vibration response. It was made for the purpose of providing.

This will be explained below based on examples.

(Means for Solving the Problems) The present invention provides at least a face member or a face insert material of a golf club head having a thermoplastic length of 3! A golf club head made of fiber-reinforced plastic,
The following will be explained based on an example of the face insert material. As shown in FIGS. 1 and 2, a golf club head l in which thermoplastic long fiber reinforced plastics 6 are arranged in the face insert material 3 of the golf club head 1 is shown. It is.

The thermoplastic long fiber reinforced plastics 5 used in the present invention may be woven fabrics made of long fibers or short fibers of various reinforcing fibers such as carbon fibers and aramid fibers, such as plain weave, twill weave, and satin weave, or any weaving methods such as plain weave, twill weave, and satin weave. A mat or the like can be used, and a thermoplastic resin such as urethane, nylon, ABS, polyethylene, or polycarbonate can be used as the matrix resin.

(Function) The present invention is characterized by disposing a desired amount of thermoplastic long fiber reinforced plastics at any position on the face member or face insert material of a golf club head. Since plastic long fiber reinforced plastics are made of the above-mentioned fiber material and matrix resin, the vibration damping properties and toughness of the fiber material improve and maintain the properties of the golf club head, while the matrix resin is highly flexible. , has the effect of having almost no effect on rigidity. Furthermore, in manufacturing, curved surfaces, steps, etc. can be easily formed.

(Example) Other examples of the present invention will be shown below.

As an example of placing it on the face insert material 3, the second
As shown in FIG. In this case, thermoplastic long fiber reinforced plastics 5 may be arranged between the strength members 6, or thermoplastic long fiber reinforced plastics 5 may be used as the surface material 4 as shown in FIG. As shown in FIG. 6, it can be placed inside the strength member 6, or as shown in FIG.
Various implementations are possible, such as providing a stepped portion as shown in the figure, or arranging it diagonally as shown in FIG.

Although the face insert material has been described as an example above, the present invention is not limited to the face insert material, but can also be applied to face members, sole plates, head bodies, and the like.

(Effects of the Invention) As described above, the present invention is characterized in that a desired amount of thermoplastic long fiber reinforced plastic is placed at any arbitrary position of at least the face member or face insert material of a golf club head. It has the following effects.

Quickly absorbs vibrations and enables stable hitting.

In addition, vibrations can be absorbed by the thermoplastic long fiber reinforced plastic socks, making it possible to hit the ball stably.

In addition, thermoplastic long fiber reinforced plastics soften when heated, so they can be molded well according to the shape of the mold, and can be used in areas with uneven parts such as face molding, as shown in Figure 7. The integrated thermoplastic long fiber reinforced plastics 5 can be used even in areas with steps such as this, which reduces the number of parts and has great manufacturing advantages. It has fewer boundaries, significantly reduces interfacial failure or boundary failure at joints or bonded areas, and is highly durable.

In addition, molding can be performed simultaneously with the head body molding, significantly reducing the number of work steps.

If used locally, conventional FRP would increase the rigidity of that part, which was a design constraint, but thermoplastic long fiber reinforced plastics have almost no effect on rigidity, so they can be used in any position. It can be arranged in any shape.

In addition, by placing thermoplastic long fiber reinforced plastics on the surface, or placing a transparent resin plate on the surface and placing thermoplastic long fiber reinforced plastics inside it,
The reinforcing fibers can be visually seen from the top, bottom, or side, and the vibration damping function can be visually understood.

Furthermore, since arbitrary designs can be made on the top and bottom of the surface material, interesting designs are possible, and design-oriented layouts are also possible.

As described above, the present invention is characterized in that a desired amount of thermoplastic long fiber reinforced plastics is disposed at an arbitrary position of at least the face member or face insert material of a golf club head, and the thermoplastic long fiber reinforced plastics are Fiber-reinforced plastics consist of the above-mentioned fiber material and matrix resin, so due to the vibration damping properties and toughness of the fiber material,
While improving and maintaining the elastic properties of the golf club head, since the matrix resin is highly flexible, it hardly affects the rigidity, making it possible to place the desired amount in the desired position. Moreover, since it has very good moldability, it can be placed in a mixture with other members, and the vibration damping characteristics of each member can be changed arbitrarily, making it possible to design various vibrations. Furthermore, since it is possible to control the resin, it is possible to change the elasticity and rigidity of the golf club head, and it is possible to create golf club heads with more variations.

[Brief explanation of the drawing]

1 to 8 relate to embodiments of the present invention, and the first
The figure shows an overall perspective view, FIG. 2 shows a perspective view of the face insert material, and FIGS. 3 to 8 show cross-sectional views taken along the line A--A in FIG. 2. 1... Golf club head, 2... Face member,
3...Face insert material, 4...Surface material, 5.
...Thermoplastic long fiber reinforced plastics, 6...Strength part +4°, 2...No 3rd day stem dam figure 7 figure cuff figure $b mouth $g mouth

Claims (1)

[Scope of Claims] 1. A golf club head characterized in that a thermoplastic long fiber reinforced plastic is disposed in at least a face member or a face insert material of the golf club head. 2. The golf club head according to claim 1, wherein a thermoplastic long fiber reinforced plastic is disposed on the surface material of the face member or the face insert material.