JP2729689B2 - Golf club head - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head, and more particularly to a face portion of a wood golf club head and an iron club head, and a three-dimensional woven fiber reinforced plastic around the face portion. The present invention relates to an improvement of a golf club head constituted by:

[Conventional technology]

Conventionally, a golf club head 1 mainly composed of a fiber reinforced plastic formed by impregnating a resin into carbon fiber, glass fiber, aromatic polyamide fiber or the like is shown in FIG. 9 (a).
As shown in FIG. 9 (b), the sole part 2 is covered with a fiber-reinforced plastic 3 and formed, and most of the form of the material is a sheet mold compound (SMC) or a cross prepreg. Alternatively, a unidirectional prepreg is used, and in particular, the face portion 4 of the club red 1 generally uses a prepreg in which fibers are laminated.

[Problems to be solved by the invention]

However, in the face portion 4 where the impact of the ball is severe, there is a problem that the laminated prepreg is delaminated.

Further, during molding of the club head, the cross eyes are likely to be disturbed, which has led to not only a problem in appearance but also a decrease in strength of the face portion 4.

Recently, there has been proposed a club head in which only the face insert is reinforced by using a three-dimensional woven fabric (see, for example, Japanese Utility Model Laid-Open No. 59-133264,
61-58676, JP-A-62-102776), and there is a problem that chipping at the boundary of the face surface tends to occur frequently when the club is used.

[Object of the invention]

The present invention has been devised in view of such a conventional problem, and a continuous blow of the face portion breaks the matrix resin between the laminations, the fibers are delaminated, or at the boundary portion with the face portion. It is an object of the present invention to provide a golf club head in which cracks are generated or chipped effectively and the life of the club head is improved.

[Means for solving the problem]

The present invention achieves the above object by using carbon fiber,
A three-dimensional woven fabric made of glass fiber, aromatic polyamide fiber, or the like and impregnated with a matrix resin is formed into a woven fabric body having a predetermined thickness, and at least a part of the warp or weft around the woven fabric is removed. And a slender portion formed in a shape, the fabric main body portion of the three-dimensional fabric is disposed over substantially the entire face portion of the club head main body, and the slender portion is disposed at least partially around the face portion, The gist is that the club head body is embedded in a fiber-reinforced plastic and integrally molded.

[Function of the invention]

The present invention is configured as described above, and a fabric main body formed to a predetermined thickness of a three-dimensional fabric impregnated with a matrix resin is disposed on substantially the entire face portion of the club head main body, and the periphery of the fabric main body is arranged. By arranging the slender part formed around the face part and burying it integrally with the fiber reinforced plastic of the club head body, the matrix resin between the laminations is broken and the fibers are delaminated or the face part This effectively prevents the occurrence of cracks or chipping at the boundary between the two.

(Example of the invention)

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a front view of a wood golf club head mainly comprising a fiber reinforced plastic embodying the present invention, FIG.
The drawing shows a cross-sectional view taken along the line II-II of FIG. 1, and the wood golf club head main body 11 includes a sole portion 13 and a face portion 14.
Except for the above, it is covered with a fiber reinforced plastic 15 made of carbon fiber, glass fiber, aromatic polyamide fiber or the like.

In the embodiment of the present invention, as shown in FIG. 2, substantially the entire surface of the face portion 14 of the club head main body 11 and the periphery thereof are made of carbon fiber, glass fiber and aromatic polyamide fiber as shown in FIG. And a woven fabric portion 16a formed to a predetermined thickness with fibers such as a fiber, and a splayed portion 16 formed by removing at least one side of the warp or weft around the woven fabric.
b and is made of a fiber reinforced plastic impregnated with a matrix resin in a three-dimensional woven fabric 16 molded integrally,
A score line 17 is formed on the surface of the face portion 14 at the same time as molding. Also, score line 17
May be processed in a process after molding.

The fabric body 16a of the three-dimensional fabric 16 constituting the face portion 14 is generally configured with a thickness of 3 to 10 mm,
The slender portion 16b is in a so-called scattered state so as to be easily bent as described above.

As the matrix resin, a thermosetting resin such as a vinyl ester resin, an unsaturated polyester resin, and an epoxy resin is used.

The three-dimensional fabric 16 is woven by a well-known method. Since the three-dimensional fabric 16 has a large bending rigidity, it is very difficult to use the three-dimensional fabric 16 on a curved surface having a small radius of curvature or an uneven surface.

In addition, the three-dimensional fabric 16 is made of
16b is arranged along the upper portion 11a of the club head as shown in FIG. 2, and as shown in another embodiment of FIGS. 3 and 5, the fabric main portion 16a of the three-dimensional fabric 16 is provided. The both ends of the head portion may be formed as a slender portion 16b, which may be embedded in the fiber reinforced plastic 15 of the head upper portion 11a and the lower portion 11b constituting the club head body 11 and integrally formed.

According to the present invention, the three-dimensional fabric 16 is impregnated with a matrix resin, and is made of a fiber-reinforced plastic having a predetermined thickness.
16a, face part 14 where impact resistance is particularly required
Of the woven fabric body 16a
And arranged so as to be covered with a continuously formed slender portion 16b,
Fiber reinforced plastic 15 constituting the club head body 1
By embedding and molding the surface part integrally, the fiber reinforcement in the thickness (t) direction of the face surface 14a becomes possible, so that the rigidity of the face part 14 is increased, and the ball flying characteristics are improved.
Further, it is possible to prevent the matrix resin between the laminations from being broken and the fibers from being delaminated, and the occurrence of cracks or chipping at the boundary portion X with the face portion 14 can be prevented.

And the wood golf club head body as described above
When molding 11, the fabric main portion 16a of the three-dimensional fabric 16 is disposed on the face portion 14, the slender portion 16b is bent toward the head upper portion 11a or the lower portion 11b, and the sole portion 13 is formed.
Aside from covering the face portion 14 with the fiber reinforced plastic 15, the material is put into a mold and cured by heating, so that the face portion 14 and at least a part of the periphery thereof are provided with a slender portion 16b of the three-dimensional fabric 16. The golf club head body 11 made of fiber reinforced plastic can be manufactured.

FIG. 5 is a front view of an iron golf club head 21 mainly made of fiber-reinforced plastic, embodying the present invention.
21 is a frame in which a hosel part 22 and a sole part 23 are integrally formed, at least the sole part 23 and the face part
Except for carbon fiber, glass fiber, aromatic polyamide fiber, etc., the fiber is covered with a fiber reinforced plastic 25, and the face portion 24 has the wood golf club head main body 11 as shown in FIG. In the same manner as described above, the three-dimensional woven fabric 26 in which the woven body portion 26a and the sloping portion 26b are integrally formed of fibers such as carbon fiber, glass fiber, and aromatic polyamide fiber is made of fiber reinforced plastic impregnated with a matrix resin. It is.

The three-dimensional fabric 26 is made of a fiber-reinforced plastic fabric body 26a impregnated with a matrix resin, and is used on substantially the entire surface of the face portion 24, which is particularly required to have a high impact strength, and at least a part of the periphery thereof. Textile body 26a
It is disposed so as to cover with the continuously formed slender part 26b,
By embedding and molding integrally with the fiber reinforced plastic 25 constituting the iron golf club head main body 21, the fiber can be reinforced in the thickness (t) direction of the face surface. This increases the ball's flight characteristics, and also prevents the matrix resin between the layers from breaking and the fibers from delaminating, and preventing the occurrence or cracking of the crack at the boundary X with the face portion 24. is there. Reference numeral 27 denotes a core such as a syntactic foam.

In addition, as shown in FIG. 7, the slender portion 26b of the three-dimensional fabric 26 is arranged along the upper portion 21a of the club head.
As shown in another embodiment of FIG.
May be embedded in the fiber reinforced plastic 25 of the head upper part 21a and integrally molded.

Since the other configuration is the same as that of the first embodiment, the same reference numerals are given and the description is omitted.

〔The invention's effect〕

The present invention relates to a golf club head which is covered with a fiber-reinforced plastic except for a sole portion as described above, and is made of a carbon fiber, a glass fiber, an aromatic polyamide fiber or the like, and is impregnated with a matrix resin. Are formed into a woven body having a predetermined thickness and a splayed portion formed by removing at least a part of the warp or weft around the woven fabric, and forming the woven body of the three-dimensional fabric into a club head. Since it is arranged on the substantially entire face portion of the main body and the splay portion is arranged around the face portion and embedded in the fiber reinforced plastic constituting the club head main body and integrally molded, the face portion is continuous. The blow will break the matrix resin between the laminations, causing the fibers to delaminate or create cracks at the periphery that connects to the face, especially at the boundary with the top. Click prevented, it is possible to improve the life of the club head, also the bending rigidity is excellent in and can be stabilized effectively molded finish and the follow-up of the molding die of large three-dimensional textile.

Further, since fiber reinforcement in the thickness direction of the face surface becomes possible, the rigidity of the face portion is increased, and there is an effect that the flying characteristics of the ball can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a wood golf club head mainly comprising fiber reinforced plastic embodying the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is another embodiment. FIGS. 4 and 5 are sectional views of a three-dimensional fabric according to the present invention, and FIG. 6 is an iron golf club mainly comprising fiber-reinforced plastic embodying the present invention. FIG. 7 is a front view of the head, FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6, FIG. 8 is a view similar to FIG. 7 showing another embodiment, FIG. 9 (a) and FIG. (b) is a sectional view of a conventional wood golf club head. 11 Wood wood club head body, 13 Sole part, 14 Face part, 15 Fiber reinforced plastic,
16 ... three-dimensional fabric, 16a ... fabric main part, 16b ... slender part, 21 ... iron golf club head main body, 26 ... three-dimensional fabric, 26a ... fabric main part, 26b ... slender part.

Claims (1)

(57) [Claims] 1. A golf club head which is covered with a fiber-reinforced plastic except for a sole portion, wherein a three-dimensional woven fabric made of carbon fiber, glass fiber, aromatic polyamide fiber or the like and impregnated with a matrix resin is provided. The main body of the three-dimensional woven fabric is formed into a woven main body formed to have a thickness of, and a splayed portion formed by removing at least a part of the warp or weft around the woven fabric. A golf club, wherein the golf club is provided on the entire surface of the face portion, the splay portion is provided on at least a part of the periphery of the face portion, and the fiber is buried in the fiber reinforced plastic constituting the club head body to be integrally molded. Club head.