JP2000024143A - Golf club and racket - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to easily select a golf club suitable for himself or herself by freely combining a club head and a shaft. SOLUTION: A means 11 for easily attaching and detaching the club head 16 and the shaft 5 is disposed. The user is able to freely select the club head and the shaft 5 from various club heads and shafts, to combine these club heads and shafts, to make trial hitting if it is possible and to select the golf club which the user himself or herself really needs. To bond the club head 16 and the shaft 5 with the attaching and detaching means 11, the user moves a box nut 10 to the front end of a neck 14 and tightens the same by means of a wrench, etc. When the nut and the neck are tightened by the wrench, etc., the internal threads 12 of the box nut 10 and the external threads 13 disposed at the neck 14 of the club head 16 mesh with each other. When both are tightened, the width of slits 19 disposed at the portion of the external threads 13 are gradually narrowed and the diameter of the portion of the external threads 13 is reduced, by which the shaft 5 is tightened and both are surely coupled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club,
Regarding tennis and badminton rackets.

[0002]

2. Description of the Related Art A club head is made mainly in consideration of a distance to hit a golf ball, its trajectory and a place to hit. A club head suitable for these cases is selected, for example, to fly a golf ball from a bunker, to roll a golf ball on a green, or the like. For example, if you want to fly far, wood is selected, if you want to throw a ball out of a bunker, sand wedge is selected, and on the green, putter is selected. Further, a club head having a large angle (loft angle) between the face surface and the shaft is selected to increase the trajectory of the golf ball, and a club head having a small loft angle is selected to decrease the angle. The material of the club head may be a wooden wood or a wood made of chemical fibers such as iron, titanium and carbon fiber. Thus, there are various types of club heads. Similarly, tennis and badminton rackets are similarly made of wood, and some are made of chemical fibers such as aluminum or carbon fiber.

In addition to the difference in length, some shafts are made of metal, while others are made of chemical fiber such as carbon fiber. This is a material difference, but not only this, but there is also a shaft with a soft tone as a whole and a shaft with a hard tone. Further, there is a difference in the initial tone and the middle tone.

Since a golf club is a combination of a club head and a shaft, for example, when purchasing a third wood, the club head is made of wood, metal, or the like.
Choose from synthetic fibers and choose shafts made of metal or synthetic fibers.
You have to consider whether the condition is hard, first or medium. However, amateurs usually can't immediately judge which is better. The same applies to tennis and badminton rackets.

[0005]

On the other hand, golfers also differ in height, arm length, muscle strength, and the like. Also, the length of golf experience varies from person to person, and their preferences vary. Regardless of professional golfers, it is very difficult for a golfer who goes on the course once a month to select a golf club that suits him from the above combinations when trying to purchase. However, when purchasing a golf club, the actual situation is that the player selects an existing one that is suitable for the intended use only by performing several swings. After a few swings, he often buys an expensive golf club from tens of thousands to hundreds of thousands of yen, hits a golf ball on the course, and realizes that he is not suitable for himself. . This wastes hundreds of thousands to hundreds of thousands of yen.

According to the present invention, in order to avoid such waste, a club head and a shaft are separately prepared,
The goal is to allow golfers to freely combine them into golf clubs and, if possible, to make a trial shot so that they can find a club that really suits them. The same applies to tennis and badminton rackets.

[0007]

According to the present invention, there is provided a racket for tennis or badminton, which comprises a detachable means for easily attaching and detaching a club head and a shaft of a golf club. The frame and the shaft can be easily attached and detached.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. FIG. 1 shows the front of a wood club head 1. The club head 1 is made of a material whose face 2 is metal and whose main body is wooden. Below the face 2 is a heel 3 and on the neck 4 is a shaft 5
Is attached.

FIG. 2 shows a side view of the club head 1 shown in FIG. The angle between the face 2 and the axial direction of the club head 1 is called a loft angle L, and the height of the trajectory of the hit golf ball is determined by the loft angle L. Wood has a smaller loft angle L than irons. This is mainly because wood is used to fly far away.

FIG. 3 shows a club head 6 with a small thickness D2 even though the loft angle L is the same as that of the club head 1 shown in FIG. Although having the same loft angle L, the golf ball hit with the club head 6 shown in FIG. 3 has a higher trajectory than the club head 1 shown in FIG.
Suitable for beginners.

[0011] Even if the loft angle L is the same, there are differences in the material made of wood, metal, and chemical fibers such as carbon fibers.
When hit with different club heads made of these materials, the hit feeling is different, and the trajectory of the golf ball is also different.
This is because not only wood but also iron and putter are made of stainless steel or soft iron.

Shaft 5 attached to club head 1
When hit, the golf ball bends in the opposite direction to the golf ball due to this impact, and immediately thereafter, a force to return to the original state is applied to the golf ball, and the golf ball flies. Depending on whether the material of the shaft 5 to which such a force is applied by impact is flexible or hard, the flight distance and the direction of the trajectory of the golf ball are different, and the feel of hitting is naturally different. At present, the shaft 5 is commercially available in the form of metal and synthetic fiber such as carbon fiber. Shafts made of flexible materials are generally said to be suitable for beginners, while stiff shafts are said to be suitable for muscular people. The difference between the shafts 5 is not limited to this, and the shaft 5 may have a flexible front tone or a middle flexible middle tone.

[0013] Ideally speaking, in a golf shop,
We have golf clubs that combine club heads with different materials, loft angles, etc., and all shafts with different materials, flexibility, pre-tone, medium tone, etc., and after hitting a test, combine the club head and shaft that suits you You should buy a golf club. However, if all the combinations are arranged, the number becomes thousands, which is impossible.

[0014] However, if there is a means for easily replacing the club head and the shaft, there is no need to have a thousands of combinations of golf clubs. Just by preparing club heads having different materials, loft angles, and the like, and different shafts having different materials, flexibility, tone, etc., the same combination as a golf club having thousands of combinations can be obtained.

FIG. 4 shows the attaching / detaching means 11 for easily attaching and detaching the club head 16 and the shaft 5. The shaft 5 is provided with a cap nut 10 through which the cap nut 10 penetrates.
2 is cut off. The female screw 12 is formed so as to gradually widen toward the club head 16. The neck 14 of the club head 16 is provided with a hole 15 for inserting the shaft 5, and a male screw 13 is formed at the tip of the neck 14. The male screw 13 is gradually tapered toward the tip. Further, as shown in FIG. 5, slits 19 are provided at positions 4 to 5 where the male screw 13 is cut.

In order to connect the club head 16 and the shaft 5, the cap nut 10 is moved to the tip of the neck 14 and tightened with a spanner or the like. When tightened with a spanner or the like, the female screw 12 of the cap nut 10 and the neck 1 of the club head 16
4 engages with a male screw 13 provided therein. When tightened, a slit 19 provided in the male screw 13 is provided.
Is gradually narrowed, the diameter of the male screw 13 is reduced, and the shaft 5 is tightened.

On the contrary, to remove the shaft 5 from the club head 16, the cap nut 10 is rotated in a direction opposite to the direction in which the cap nut 10 is tightened with a spanner or the like, and the male screw 13 of the neck 14 is rotated.
Remove the cap nut 10 from the part. Thus, the cap nut 1
When loosened and removed, the width of the slit 19 provided in the portion of the male screw 13 of the neck 14 increases, and the shaft 5 can be easily removed from the club head 16 by pulling the shaft 5.

FIG. 6 shows another joining means different from FIG. A male screw 25 is cut on the outer periphery of the tip of the neck 14 of the club head. A conical recess 26 is provided in the tip of the neck 14. At the tip of the shaft 5, there is provided a conical convex portion 23 that fits into a conical concave portion 26 provided on the neck 14. A cap nut 21 is provided at the tip of the shaft 5, and a female screw 22 is cut inside the cap nut 21. The conical convex portion 23 of the shaft 5 is inserted into the conical concave portion 26 of the neck 9, and the cap nut 21 is tightened. When the cap nut 21 is tightened, a male screw 25 provided on the outer periphery of the neck 14 and a female screw 22 of the cap nut 21 are provided.
And screw together. When this is tightened, the tip of the neck 14 collides with the stopper 24, and the concave portion 26 on the neck 14 and the convex portion 23 on the shaft 5 are pressed against each other, and the two are firmly connected. The club head 16 and the shaft 5
It goes without saying that the attaching / detaching means may be any other means that can be easily carried out.

At a golf shop, different types of club heads having different materials and loft angles and shafts having different materials and conditions are prepared. The customer freely creates a golf club by combining the club head and the shaft from among them, and performs a trial hit. If the combination is unsatisfactory, reassembly is performed, and if there is a satisfactory combination, a similar golf club may be purchased. If the combination of the club head and the shaft can be easily changed in this way, the golf shop does not need to prepare all the combinations, but only needs to prepare various types of club heads and various types of shafts. It is not expensive and can be prepared.
The customer can also try out a golf club suitable for himself / herself by a free combination, so that a satisfactory golf club can be purchased.

The merits that can be freely combined are not limited to this. Golf courses may be away from home, and the weather may not be known when leaving home. When you leave your home, the wind may not blow very much, but when you arrive at the golf course there are times when strong winds are blowing. It is more advantageous to hit a low golf ball instead of hitting a golf ball high when a strong wind is blowing.
Therefore, several club heads having different loft angles may be prepared, and a club head having a loft angle according to the weather of the golf course may be mounted. However, it is a rule violation if the club head is not replaced before leaving the course.

The means for attaching and detaching the club head and the shaft can be applied to the attachment and detachment of a tennis racket or a badminton racket and a shaft.

[0022]

According to the present invention, the golf club, the tennis racket, and the badminton racket suitable for the person can be easily selected by configuring as shown in the above embodiment.

[Brief description of the drawings]

FIG. 1 shows a front view of a wood club. FIG.
Is a side view of the wood club. FIG. 3 is a side view of a wood club having a thickness different from that of FIG. FIG. 4 shows means for attaching and detaching the club head and the shaft. FIG. 5 shows a club head provided with a slit at the neck. FIG. 6 shows a different means for attaching and detaching the club head and the shaft from FIG.

[Explanation of symbols]

1, 6, 16 Club head 2 Face
3 ・ ・ heel 4,14 ・ ・ neck 5 ・ shaft 10,21
・ ・ Cap nuts 11 ・ ・ Removing means 12,22 ・ ・ Female screw 13,
25 Male screw

Claims (2)

[Claims] 1. A golf club comprising a detachable means for easily attaching and detaching a club head and a shaft. 2. A frame and a shaft are easily attached,
A racket for tennis or badminton, wherein a detachable means for detachment is provided.