JPH10151228A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent stress concentration on the shaft of a golf club, whose shaft tip end is inserted and fixed into a hole on the hosel, to prevent breaking of the shaft, by integrally fixing the shaft and the hosel through a thin wall enhancing tube placed between the shaft and the inner periphery face of the hole of the hosel. SOLUTION: A head main body 1 made of metal and a hosel 2 are integrally formed and a hole 3 is formed in the hosel 2. When a shaft 4 is inserted and fixed into the hole 3 of the hosel 2, a thin wall enhancing tube 5 is placed between the shaft 4 and the inner periphery face of the hole 3 of the hosel 2. Further, the enhancing tube 5 and the hosel 2 are integrally fixed together and the enhancing tube 5 is integrally fixed with the shaft 4. As the material for the enhancing tube 5, a metal such as stainless steel, titanium and its alloy, aluminum and its alloy, or fiber reinforced resin such as CFRP, etc., is used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional shaft 100 is mounted by extending a hosel 103 from a neck portion 102 of a head body 101, integrally forming these with a metal material, and inserting the shaft 100 into a hole 104 of the hosel 103. Was fixedly integrated using an adhesive. Also,
The socket 105 was attached to the tip of the hosel 103. As a material of the shaft 100 mounted on the hosel 103, carbon fiber reinforced resin (CFR) is used because it is lighter and more tough than a conventional steel tubular body.
A tapered tubular body made of a fiber-reinforced resin represented by P) is preferably used.

[0003]

Among golf clubs, when using a wood club for gaining a flight distance, especially a driver, even if an amateur is a hard hitter, he hits the ball with a head speed of 50 m / s or more. . Since the club head for the driver is a heavy object of about 200g, if such a heavy object is fixed to the tip of the shaft and hits the ball at the above speed, stress concentrates on the position of the hosel tip of the shaft, causing a severe condition. Will be exposed to Although the shaft is rich in toughness as described above, it may become fatigued near the tip of the hosel, which is a substantially rigid body, and may be broken during repeated use. It is a danger. Although a socket is attached to the end of the hosel of the shaft for the purpose of relieving stress concentration, it is not very useful.

Accordingly, an object of the present invention is to provide a golf club which prevents stress concentration on a shaft and prevents breakage of the shaft.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a golf club in which the tip of a shaft is inserted and fixed in a hole provided in a hosel extending from a neck of a head. A thin reinforcing tube is arranged between the inner peripheral surface of the hole and the shaft and the hosel are fixedly integrated through the reinforcing tube.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, a metal head body 1 and a hosel 2 are integrally formed.
Has a hole 3 formed therein. The shaft 4 is inserted and fixed in the hole 3 of the hosel 2. In the present invention, a thin reinforcing pipe 5 is provided between the shaft 4 and the inner peripheral surface of the hole 3 of the hosel 2.
Is arranged. In this embodiment, the reinforcing pipe 5 is inserted up to the rear end 3A of the hole 3 of the hosel 2, and the reinforcing pipe 5 and the hosel 2 are fixedly integrated, and the reinforcing pipe 5 and the shaft 4 are also fixedly integrated. Be transformed into Tip 3B of hole 3
A socket 6 is provided on the side.

As the material for forming the head body 1 and the hosel 2, Persimmon, fiber reinforced resin, and various metal materials can be suitably used, and an iron type golf club is also possible. It is preferable to apply the present invention to the first wood called. The material of the shaft 4 is not particularly limited, but a shaft 4 made of fiber reinforced resin is preferable. The area where the shaft 4 is inserted into the hole 3 of the hosel 2 is usually a hollow tubular body of the same area, but may be tapered and extended. As the reinforcing pipe 5, a metal such as stainless steel, steel, titanium and its alloys, aluminum and its alloys, or a fiber reinforced resin such as CFRP can be used. The wall thickness of the reinforcing pipe 5 is about 0.2 to 0.8 mm, preferably about 0.5 mm. If there is no dimensional margin for disposing the reinforcing pipe 5 in the hole 3, the hole 3 is machined to increase its diameter.
The mounting of the shaft 4 is preferably performed using an epoxy-based cold-setting two-component adhesive. The socket 6 is also fixed with a similar adhesive.

In another embodiment, shown in FIG.
This is an example in which the rear end 3A is not inserted up to the middle. The portion of the hosel 2 deeper than the hole 3 is not an area where stress is concentrated on the shaft 4 and can be omitted. However, it is necessary that the reinforcing tube 5 exists at the tip 3B of the hole 3. It is preferable to extend the upper end of the reinforcing pipe beyond the tip of the hole 3 by 10 mm or more. This extension amount is more preferably in the range of 15 to 30 mm. The mounting of the socket 6 is not always necessary. When the socket 6 is used, the stress concentration of the shaft 4 can be advantageously suppressed integrally with the socket 6 at the tip end of the hosel 2 via the reinforcing tube 5.

FIG. 3 shows another shape of the reinforcing tube 5. The reinforcing tube 5 may have not only an endless circle but also a shape as shown in FIG. 3 with a cut in the axial direction.
Alternatively, as shown in FIG.
Can also be used. When the reinforcing tube 5 shown in FIGS. 3 and 4 is also inserted into the hole 3 of the hosel 2, the cut-out portions come into contact with each other to form an endless circle. Also,
The reinforcing pipe 5 may be divided into three or more parts.

[0011]

As described above, according to the present invention, a thin reinforcing tube is arranged between the shaft and the inner peripheral surface of the hole of the hosel, and the shaft and the hosel are fixedly integrated via the reinforcing tube. As a result, it is possible to prevent stress from concentrating on the hosel tip position of the shaft and breakage of the shaft.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a preferred embodiment of the present invention.

FIG. 2 is a sectional view showing another embodiment.

FIG. 3 is a plan view showing another example of a reinforcing pipe.

FIG. 4 is a plan view showing still another example of a reinforcing pipe.

FIG. 5 is a sectional view showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 head body 2 hosel 3 hole 3A rear end 3B front end 4 shaft 5 reinforcing pipe

Claims (1)

[Claims] 1. A golf club fixed by inserting a tip end of a shaft into a hole provided in a hosel extending from a neck portion of a head, wherein a thin reinforcing tube is disposed between the shaft and an inner peripheral surface of the hole of the hosel. A golf club, wherein a shaft and a hosel are fixedly integrated through the reinforcing tube.