JPH0737860Y2 - Tubular bodies such as golf club shafts - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This invention is a golf club shaft,
The present invention relates to tubular bodies such as fishing rods and bicycle frames.

[0002]

2. Description of the Related Art In order to improve the decorative value, surface hardness, and impact resistance of a golf club shaft, it is possible to interpose a metal layer in a tubular body formed by laminating fiber reinforced resin. Is known for.

[0003]

However, since the above-mentioned known ones are formed by winding a prepreg made of a woven fabric coated with a metal thin film so that the metal thin film is on the inner surface, The fiber crossing part of a certain woven cloth obscures the luster of the metal thin film, blurs the luster, and causes color unevenness, and the metal thin film becomes turbid due to the influence of black, which is the reinforcing fiber of the inner layer, and the effect of black color is sufficient. There are problems such as not being able to demonstrate it. An object of the present invention is to provide a tubular body, such as a golf club, in which such defects are improved and the luster of the metal thin film can be sufficiently exhibited.

[0004]

In order to achieve the above-mentioned object, the present invention uses a glass fiber woven cloth as a reinforcing fiber on the outer periphery of an inner layer formed of a fiber reinforced resin and provides a metal thin film on the outer surface thereof. An intermediate layer of a fiber-reinforced resin is formed by winding, and an outer layer of a fiber-reinforced resin using longitudinally aligned glass fibers as reinforcing fibers is integrally formed outside the intermediate layer.

As the reinforcing fibers forming the inner layer, it is preferable to use aligned fibers in the axial or substantially axial direction of the tubular body, and for the metal thin film, an amorphous metal such as titanium or tungsten or a crystalline metal is used.

[0006]

The metal thin film according to the present invention has a tubular shape without being affected by the color tone of the carbon fiber, which is the reinforcing fiber of the inner layer, and the woven cloth, which is the reinforcing fiber of the intermediate layer, does not cause the gloss or blurring of the gloss. It imparts a clear luster to the body and enhances the surface hardness and impact resistance of the tubular body.

[0007]

Embodiments of the present invention will be described with reference to the drawings.
An inner layer 1 made of a fiber reinforced resin formed by winding a prepreg obtained by impregnating a reinforcing fiber such as carbon fiber, glass fiber or aramid fiber with a thermosetting synthetic resin such as epoxy resin, phenol resin or polyester resin is formed on the outer peripheral surface thereof. A glass fiber woven fabric is used as a reinforcing fiber, and an intermediate layer 3 of a fiber-reinforced resin integrally provided with a metal thin film 2 on the outer surface is integrally wound around and formed on the outer side of the intermediate layer 3 as a reinforcing fiber. A tubular body 5 is formed by integrally winding and forming an outer layer 4 of a fiber reinforced resin using aligned glass fibers in the longitudinal direction.

As the metal thin film 2, an amorphous metal such as titanium or tungsten or a crystalline metal is integrally deposited on the outer surface of the intermediate layer 3 to a thickness of about 1 μm by vapor deposition such as sputtering or plating. Further, a coating film 6 of transparent or translucent paint can be formed on the surface of the outer layer 4.

In order to manufacture the tubular body 5, however, as is well known, after the core metal 7 is successively wound with the prepreg of the inner layer 1, the prepreg of the intermediate layer 3 having the metal thin film 2 and the prepreg of the outer layer 4. After the taping and the heat curing treatment, core removal, tape peeling, polishing, etc. are performed, and then the coating film 6 is applied to manufacture the tubular body 5. It is also possible to partially apply a colored paint to the surface of the coating film 6 of the tubular body 5 so that the metallic luster portion is partially formed in a pattern.

Since the embodiment of the present invention is constructed as described above, the metallic thin film 2 does not have a lustrous luster or uneven color and does not become dark due to the color tone of the inner layer 1. A metallic luster is imparted to the golf club shaft to improve the decorative value as a tubular body such as a golf club shaft, a fishing rod, and a bicycle frame, while improving hardness and strengthening impact resistance.

[0011]

According to the present invention, when a metallic thin film is provided in a tubular body to impart a metallic luster, a metallic thin film is applied to the outer surface of a glass fiber woven fabric of reinforcing fibers forming an intermediate layer, and the longitudinal surface is applied to the outer surface. Alignment in the direction By integrally forming the outer layer with glass fiber as the reinforcing fiber, the metallic luster of the metal thin film may be obscured by the fiber crossing part of the glass fiber woven fabric, causing blurring or uneven coloring. The metal thin film is not affected by the color tone of the inner layer, and has the excellent features and practicality that the decorative effect due to the metallic luster of the tubular body can be sufficiently exhibited.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of a tubular body of the present invention.

FIG. 2 is an explanatory view of a manufacturing process of the present invention.

FIG. 3 is a perspective view of the present invention.

[Explanation of symbols]

 1 inner layer 2 metal thin film 3 intermediate layer 4 outer layer 5 tubular body 6 coating film

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B29D 23/00 2126-4F B62K 3/02 7331-3D

Claims (1)

[Scope of utility model registration request] 1. An outer periphery of an inner layer formed of fiber reinforced resin,
A woven glass fiber cloth was used as the reinforcing fiber, and an intermediate layer of fiber reinforced resin having a metal thin film provided on the outer surface was formed by winding, and longitudinally aligned glass fiber was used as the reinforcing fiber on the outer side of the intermediate layer. A tubular body such as a golf club shaft, wherein an outer layer of fiber reinforced resin is integrally formed.