JP2000237355A - Golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a golfer to select golf clubs so as to meet the conditions, such as physique, physical condition and ball line, of the golfer. SOLUTION: This golf club is provided with a club shaft 1 of a hollow cylindrical shape formed to a convergent taper shape, a shaft rod 3 which is inserted and fixed to the front end 2 of this club shaft 1, a detaining piece 7 which is constituted integrally with this shaft rod 3, has a non-circular portion at its front end, is successively changed in a cross-sectional shape to a circular shape, has a threaded hole 8 at the bottom part and communicates with the club shaft 1, a club head 9 which has a fitting hole 5 meeting the non-circular cross-sectional shape of this detaining piece 7 and passes through a hollow blind cylinder-shaped engaging part 14 and a threaded part 20 which fits to the threaded hole 8 of the detaining piece 7 through the through-hole 16 of the engaging member 14 from the opening at the bottom part of the club head 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club which can be selected in accordance with a golfer's physique, physical condition, ball muscle, and other conditions.

[0002]

2. Description of the Related Art Conventional golf clubs are configured such that the club head material, loft angle, face direction, shaft material, and hardness are determined for each club. The method of changing the material of the golf club to be used according to the physical condition at that time is, at most, only to attach a lead plate to the club head.

[0003]

By the way, for golfers, due to various factors such as advancement of technology and aging, it is always the case that the club which has been used until now becomes unsatisfactory, and as a result, It is uneconomical to throw away a used club and replace it with a new club, which is uneconomical.If it is possible to change to a golf club of desired properties by replacing the components of the golf club in use, It is very convenient.

[0004]

That is, the present invention provides a hollow cylindrical club shaft formed in a tapered shape, a shaft rod inserted and fixed to the tip of the club shaft, and an integral structure with the shaft rod. A non-circular portion whose tip portion is a non-circular portion, the cross-sectional shape of which is sequentially changed to a circle, and which has a threaded hole on the bottom surface and which is connected to the club shaft; A club head penetrating a hollow cylindrical engaging member having a hole, and a threaded portion that fits into a screw hole of the locking piece from a bottom opening of the club head through a through hole of the engaging member. A golf club is configured, and in the embodiment, the cross-sectional shape of the non-circular portion is hexagonal, and the engaging member that engages with the club head has a step that engages with a neck portion of the club head. Like that .

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described with reference to FIGS.
Embodiment 1 will be described in detail. First, in FIG. 1, reference numeral 1 denotes a hollow cylindrical club shaft formed in a tapered shape, and a grip is formed at a base portion thereof not shown in the drawing, which is not different from a general golf club of this kind. .

[0006] At the tip of the club shaft 1, FIG.
Is mounted by filling an adhesive 5 (FIG. 1) between the shaft 3 and the inner wall 4 of the club shaft 1 and bonding them together. . In order to increase the adhesive strength in that case,
It is effective to form a notch 6 on the outer periphery of the.

The tip of the rod 3 has a circular cross-sectional shape ranging from a non-circular cross-sectional shape (hexagon in the illustrated embodiment) projecting from the tip 2 of the club shaft 1 to a part of the club shaft 1. The engaging piece 7 which is shifted so as to form a fitting portion 8 having a non-circular cross-section and a circular cross-section as a whole is formed in the portion on the club shaft 1 as a whole. A screw hole 8 is formed at the bottom of the locking piece 7.

On the other hand, the neck portion 10 of the club head 9
The through-hole 12 provided in the through hole 12 has a tapered shape toward the sole surface of the bottom opening thereof.
An engagement member 14 having a step 13 which engages with the engaging member 7 is fitted into the engagement member 14 having a cylindrical shape with a bottom. A fitting hole 15 that changes the cross-sectional shape is formed in the bottom surface of the engaging member 14, and a through hole 16 is formed in the bottom wall of the engaging member 14.

After the engaging piece 7 of the club shaft 1 is inserted through the engaging member 14, a screw 20 is inserted through a washer 19.
Is screwed from the through hole 16 into the screw hole 8 of the locking piece 7, and then a screw bolt 21 is screwed into the screw hole 18 formed in the bottom opening 17 of the club head 9.

The club shaft 1 is fixed via the engaging member 14 in this manner. If the engaging member 14 is rotated as necessary, the club shaft 1 and the club head 10 are engaged. The relationship can be changed, so that one golf club can be used with various changes.

The club head materials currently on the market include wood head (persimmon), carbon head (resin), aluminum head (metal), stainless steel head (metal), titanium head (metal), plastic head ( Resin), and the material of the club shaft is steel (for general use), black shaft (carbon), boron (carbon + tungsten), titanium (titanium), aluminum (aluminum alloy), stainless steel (iron + chrome) . The invention contemplates the use of ABS carbon + glass fibers.

There are six types of club head orientations: hook, slightly hooked, straight, slightly straight, slightly sliced, and sliced. No. 1 (driver) to No. 1 5
Several types are provided at each count leading to (Clique). Further, regarding the hardness of the club shaft, L, LA, A, AR, R, RS, S, SX, X,
There are 10 types of XX.

By changing the combination of the material of the club head and the club shaft, the orientation of the face of the club head, the loft angle and the hardness of the club shaft as described above, golf having different sexes, ages, physiques, physical conditions, and ball muscles can be achieved. The most suitable golf club is selected for each golf club. In the above description, as a golf club,
Although a so-called wood club is shown, iron can achieve the same purpose.

[0014]

As is apparent from the above description, according to the present invention, it is possible to combine a club head and a club shaft most suitable for the individuality of a golfer who is naturally different. Because such a change is not possible, it is economically advantageous compared to the conventional case where a new golf club has to be purchased, and it is necessary for each golfer to reach the optimum golf club. This is an excellent invention in terms of facilitation.

[Brief description of the drawings]

FIG. 1 is an exploded view showing a main part of a golf club of the present invention in each part.

FIG. 2 is a view of a portion of the golf club of the present invention.

FIG. 3 is an assembly view of a main part of the golf club of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Craft shaft 2 Tip part 3 Shaft 7 Locking piece 8 Screw hole 9 Craft head 10 Neck part 13 Step part 14 Engaging member 15 Fitting hole 16 Through hole 20 Screw part

Claims (3)

[Claims] 1. A hollow cylindrical club shaft formed into a tapered taper shape, a shaft rod inserted through and fixed to a tip portion of the club shaft, and a tip portion formed integrally with the shaft rod and having a non-circular portion. A hollow bottomed cylindrical shape having a circularly changing cross-sectional shape and having a screw hole at the bottom and having a locking hole connected to the club shaft and a fitting hole matching the non-circular cross-sectional shape of the locking piece. A golf club, comprising: a club head penetrating an engaging member; and a screw portion that fits into a screw hole of the locking piece from a bottom opening of the club head through a through hole of the engaging member. 2. The golf club according to claim 1, wherein the non-circular portion has a hexagonal cross section. 3. The golf club according to claim 1, wherein the engaging member that engages with the club head has a step that engages with a neck of the club head.