JPH1147318A - Head for golf club - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to move a centroid to a heel side and to approximately align a centroid position and a ball hitting position even if a ball is hit on the heel side by mounting a weight at the front end of a shaft insertion hole formed from the hosel part to the sole part of a metallic head body. SOLUTION: The shaft insertion hole 5 is diagonally penetrated and formed from the hosel part 3 to the sole part 4 of the head body 1 which is made of titanium and is internally provided with a hollow part 2. Namely, the entire length of the shaft insertion hole 5 is enclosed by the annular hosel part 3 and the cylindrical part 7 inclusive of the heel side outside wall 6 and the sole part 4 of the head body 1 continuous therewith. The front end thereof is provided with a tapered part 8 of the bore side gradually decreasing downward. The weight 10 made of brass having an approximately plug shape is mounted at the inner peripheral side of this tapered part 8 and is fixed by an adhesive. A hollow shaft 12 is thereafter inserted from the hosel part 3 side to the shaft insertion hole 5 and is likewise fixed by the adhesive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club head, and more particularly, to a golf club head used for a metal wood club.

[0002]

2. Description of the Related Art In recent years, in a metal wood club of this type, a ball can be hit accurately by increasing the volume of a head to increase a sweet area and a moment of inertia, thereby extending a flight distance. Is available.

[0003] On the other hand, however, the majority of general golfers tend to hit the ball on the heel side of the actual center of gravity, which causes the flight distance to decrease.

[0004]

SUMMARY OF THE INVENTION In view of the above, the present invention allows the center of gravity to be shifted to the heel side as compared with the prior art, and a general golfer hits the ball on the heel side in the same manner as before. It is another object of the present invention to provide a golf club head which can make the position of the center of gravity substantially coincide with the position of the hit ball, thereby not reducing the flight distance.

[0005]

In order to achieve the above object, a golf club head according to claim 1 of the present invention comprises:
A shaft insertion hole is formed from the hosel portion to the sole portion of the metal head main body, and a weight having a specific gravity greater than that of the head main body is attached to the tip of the shaft insertion hole.

In the golf club head according to a second aspect of the present invention, a shaft insertion hole is formed from the hosel portion to the sole portion of the metal head body, and a specific gravity of the shaft insertion hole at the tip end is larger than that of the head body. A large weight is attached, and a shaft cylinder is inserted into the shaft insertion hole from the hosel side and fixed.

According to a third aspect of the present invention, there is provided a golf club head according to the first or second aspect, wherein the shaft is inserted into the shaft insertion hole such that the shaft is abutted against the rear end of the weight. I decided to insert and fix.

According to a fourth aspect of the present invention, there is provided a golf club head according to the first or second aspect of the present invention, wherein the inner diameter of the tip portion of the shaft insertion hole is gradually reduced toward the sole portion. A tapered portion is provided, and a tapered surface corresponding to the tapered portion is provided on a peripheral surface of the weight.

According to a fifth aspect of the present invention, there is provided a golf club head according to the first or second aspect of the present invention, wherein the inner diameter dimension is gradually reduced toward the sole portion at the tip of the shaft insertion hole. A tapered portion is provided, a tapered surface corresponding to the tapered portion is provided on a peripheral surface of the weight, a female screw portion is provided on an inner surface other than the tapered portion of the shaft insertion hole, and a female screw portion and a female screw portion are provided. Between the shaft or barrel inserted into the circumference,
An adhesive holding space is provided by a thread groove of the female screw portion.

According to a sixth aspect of the present invention, there is provided a golf club head according to the first or second aspect, wherein a female screw portion is provided on an inner surface including a tip end portion of the shaft insertion hole, and a circumference of the weight is provided. On the surface, a male screw portion screwed to the female screw portion is provided, and between the female screw portion and a shaft or shaft cylinder inserted into the inner periphery of the female screw portion, an adhesive holding space by a screw groove of the female screw portion is provided. I decided to be provided.

According to a seventh aspect of the present invention, there is provided a golf club head according to the first or second aspect, wherein the shaft is abutted against the rear end of the weight so as to be inserted into the shaft insertion hole. The projection is fitted and fixed to the rear end of the weight, and is fitted to the inner peripheral side of the tip of the hollow shaft.

[0012] As in the golf club head according to the first aspect of the present invention having the above-described structure, a shaft insertion hole is formed from the hosel portion to the sole portion of the metal head body, and a tip portion of the shaft insertion hole is formed. If a weight with a specific gravity greater than that of the head body is attached, this weight is attached to the part of the head relatively closer to the heel, so that the center of gravity of the head can be moved to the heel side compared to the past. Becomes The same applies to the case where the head has a shaft cylinder as in the invention according to claim 2.

The material of the metal head body is, for example, pure titanium (specific gravity 4.54) or 64 titanium (specific gravity 4.5).
In this case, it is preferable that the material of the weight has the following specific gravity larger than that. Brass (specific gravity 8.
4), tungsten (specific gravity 19.3), platinum (specific gravity 2)
1.45), gold (specific gravity 19.32), silver (specific gravity 10.5)
0), copper (specific gravity 8.96), iron (specific gravity 7.96), lead (specific gravity 11.34) or stainless steel (specific gravity 7.9)

It is also possible to mix a high specific gravity powder metal with plastic or rubber or the like, and to use this as a molding material to form a weight. The following is an example of the formulation. Formulation example Natural rubber 70 parts EPDM (rubber) 30 parts Sulfur 1.5 parts Zinc white 1.5 parts Accelerator M 1.0 parts Tungsten powder 800 parts Total 904.0 parts (specific gravity 5.5)

In addition to this, as in the golf club head according to the third aspect of the present invention having the above-mentioned structure, the shaft is inserted and fixed in the shaft insertion hole such that the shaft abuts against the rear end of the weight. Then, when the shaft is inserted, the insertion is stopped when the front end of the shaft abuts against the rear end of the weight previously mounted in the shaft insertion hole. Therefore, the insertion depth of the shaft can be kept constant, and at the same time, the weight is prevented from moving in the direction of the hosel because the hosel side of the weight is closed by the shaft that is inserted and fixed in the shaft insertion hole. Becomes possible.

Further, as in the golf club head according to the fourth aspect of the present invention having the above-described structure, a tapered portion whose inner diameter gradually decreases toward the sole portion is provided at the tip of the shaft insertion hole. When the tapered surface corresponding to the tapered portion is provided on the peripheral surface, the weight can be prevented from moving in the direction of the sole portion by the engagement of the tapered portion and the tapered surface.

Further, as in the golf club head according to the fifth aspect of the present invention having the above-described structure, a tapered portion whose inner diameter is gradually reduced toward the sole portion is provided at the tip of the shaft insertion hole, and the weight of the weight is reduced. A tapered surface corresponding to the tapered portion is provided on the peripheral surface, a female screw portion is provided on the inner surface other than the tapered portion of the shaft insertion hole, and a female screw is provided between the female screw portion and a shaft or a shaft cylinder inserted into the inner circumference of the female screw portion. When the adhesive holding space by the thread groove of the portion is provided, it becomes possible to prevent the weight from moving in the sole portion direction by the engagement of the tapered portion and the tapered surface,
Since a large amount of adhesive is held in the adhesive holding space, the shaft or the barrel can be firmly bonded to the head body.

Further, as in the golf club head according to the sixth aspect of the present invention having the above structure, a female screw portion is provided on the inner surface including the tip of the shaft insertion hole, and the female screw portion is screwed to the peripheral surface of the weight. When a male screw portion is provided, and an adhesive holding space is provided between the female screw portion and a shaft or a shaft cylinder inserted into the inner periphery of the female screw portion by the screw groove of the female screw portion, the weight is attached to the head body by itself. By screwing, the weight can be firmly fixed to the head main body, and at the same time, since a large amount of adhesive is held in the adhesive holding space, the shaft or shaft cylinder is attached to the head main body. And can be firmly bonded.

Further, as in the golf club head according to the seventh aspect of the present invention having the above structure, the shaft is inserted and fixed in the shaft insertion hole so as to abut against the rear end of the weight, and the rear end of the weight is provided. If a protrusion is provided on the inner part of the tip of the hollow shaft, not only the weight and the head body, but also the weight and the shaft, as well as the weight and the shaft, are aligned with each other. It becomes possible to fix in the state where it was done. Also, as described above, when the shaft is inserted, the insertion is stopped at the stage where the front end of the shaft is abutted against the rear end of the weight previously mounted in the shaft insertion hole, so that the insertion depth of the shaft is always adjusted. It is possible to make the weight constant, and at the same time, since the hosel portion side of the weight is closed by the shaft inserted and fixed in the shaft insertion hole, it is possible to prevent the weight from moving in the direction of the hosel portion.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

First Embodiment FIG. 1 shows a front view of a golf club head according to this embodiment.
Is a bottom view of the head, and FIG. 3 is a longitudinal sectional view of the head.

The golf club head according to the present embodiment includes a head body (also referred to as a wood head or a club head) 1 made of titanium, and a shaft insertion of the head body 1 having a hollow portion 2 therein. A shaft insertion hole 5 is formed obliquely from the hosel portion 3 as a mouth to the sole portion 4 as a bottom surface. Therefore, the shaft insertion hole 5 is formed between the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And its sole portion 4 is surrounded by a tubular portion 7 including a cylindrical portion 7 and a sole portion 4, that is, an annular shape whose inner diameter gradually decreases downward. A tapered portion 8 is provided, and a portion other than the tapered portion 8 is a cylindrical inner surface 9 corresponding to the outer peripheral shape of the shaft 12. The tapered portion 8 and the cylindrical inner surface 9 are formed continuously, and the maximum inner diameter of the upper end of the tapered portion 8 and the inner diameter of the cylindrical inner surface 9 are set to be the same.

A brass weight 10 having a substantially plug shape is mounted on the inner peripheral side of the tapered portion 8 and is fixed by an adhesive (not shown). A tapered surface 11 having the same direction and the same inclination angle as the tapered portion 8 is provided on the outer peripheral surface of the weight 10 corresponding to the tapered portion 8 over the entire length.
The weight 10 is in close contact with the tapered portion 8 over the entire surface of the tapered surface 11. The rear end (the upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis, and is located at the boundary between the tapered portion 8 and the cylindrical inner surface 9. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A hollow shaft 12 is inserted into the shaft insertion hole 5 from the hosel part 3 side, and is fixed to the cylindrical inner surface part 9 by an adhesive (not shown). The shaft 12 is inserted into the shaft insertion hole 5 until the tip of the shaft 12 abuts against the rear end 10 a of the weight 10.

The sole 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the sole 4 side, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above configuration, first, an adhesive is applied to one or both of the tapered surface 11 and the tapered portion 8 of the weight 10 and the weight 10 is attached to the hosel portion 3. It is inserted into the shaft insertion hole 5 from the side and adhesively fixed to the tapered portion 8. Next, an adhesive is applied to one or both of the outer peripheral surface of the distal end portion and the cylindrical inner surface portion 9 of the shaft 12, and the shaft 12 is inserted into the shaft insertion hole until the distal end portion of the shaft 12 abuts against the rear end portion 10a of the weight 10. 5 and is adhesively fixed to the cylindrical inner surface 9.

The golf club head having the above configuration has the following effects.

That is, first, a shaft insertion hole 5 is formed to penetrate from the hosel portion 3 to the sole portion 4 of the head body 1 made of titanium, and the tip of the shaft insertion hole 5 has a specific gravity larger than that of the head body 1. A weight 10 made of brass having a plug shape is attached.
0 is mounted on a relatively heel portion of the head, the center of gravity G of the head is
Are moved to the heel side as compared with the center of gravity position G 'when no is mounted. Therefore, even if a general golfer hits the ball at a relatively heel-side portion of the face portion 15 as before, the center of gravity position G and the actual hitting position match, or they do not separate so much, The probability of hitting the ball in the sweet area is increased, and the possibility of hitting the ball and reducing the flying distance is reduced. The movement of the position of the center of gravity is approximately 2 mm for the weight of the weight 10 of 5 g, and the weight of the weight 10 is 6 to 10 g.
It is practical to set to about.

Further, since the shaft 12 is fixedly inserted into the shaft insertion hole 5 so that the front end thereof abuts against the rear end 10a of the weight 10, the front end of the shaft 12 is The insertion is stopped when the weight 10 is abutted against the rear end 10a of the weight 10 mounted in the shaft insertion hole 5. Therefore, the insertion depth of the shaft 12 can always be kept constant without complicated positioning work.

A tapered portion 8 whose inner diameter is gradually reduced toward the sole portion 4 is provided at the tip end of the shaft insertion hole 5, and a tapered surface 11 corresponding to the tapered portion 8 is provided on the outer peripheral surface of the weight 10. Since the tapered portion 8 and the tapered surface 11 are axially engaged with each other, the weight 10 can be prevented from moving in the sole 4 direction. Also, regarding the hosel part 3 direction, the shaft 12
The movement can be prevented by the insertion. Therefore, it is possible to effectively prevent the weight 10 from dropping off from the head or rattling in the head.

As shown in FIG. 2, the distal end portion 10b of the weight 10 is exposed to the outer surface of the sole portion 4 in an elliptical shape, so that an aesthetic appearance can be provided.
Since it is possible to visually inform a golfer that the center of gravity G of the head is on the heel side, a sense of security can be given to a general golfer.

Second Embodiment As shown in FIG. 4, the golf club head according to this embodiment first includes a titanium head main body (also referred to as a wood head or a club head) 1 and an inner portion thereof. The head body 1 having a hollow portion 2 is provided with a shaft insertion hole 5 extending from a hosel portion 3 which is a shaft insertion port to a sole portion 4 which is a bottom surface.
Are formed obliquely through. Therefore, the shaft insertion hole 5 has a tubular portion 7 including the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And a sole portion 4, the entire length of which is surrounded by the sole portion 4, that is, an annular tapered portion 8 whose inner diameter dimension gradually decreases downward.
And a portion other than the tapered portion 8 is the shaft 12.
And a female screw portion 16 having a predetermined pitch is provided on the cylindrical inner surface portion 9 over the entire length. The tapered portion 8 and the cylindrical inner surface 9 are formed continuously, and the maximum inner diameter of the upper end of the tapered portion 8 and the inner diameter of the cylindrical inner surface 9 are set to be the same.

A brass weight 10 having a substantially plug shape is mounted on the inner peripheral side of the tapered portion 8 and is fixed by an adhesive (not shown). A tapered surface 11 having the same direction and the same inclination angle as the tapered portion 8 is provided on the outer peripheral surface of the weight 10 corresponding to the tapered portion 8 over the entire length.
The weight 10 is in close contact with the tapered portion 8 over the entire surface of the tapered surface 11. The rear end (the upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis, and is located at the boundary between the tapered portion 8 and the cylindrical inner surface 9. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A hollow shaft 12 is inserted into the shaft insertion hole 5 from the hosel portion 3 side, and the female screw portion 1 is inserted.
Adhesive (not shown) to cylindrical inner surface 9 provided with 6
It is fixed by. The shaft 12 is inserted into the shaft insertion hole 5 until the tip of the shaft 12 abuts against the rear end 10 a of the weight 10. No male screw portion corresponding to the female screw portion 16 is provided on the outer peripheral surface of the shaft 12, the outer peripheral surface of the shaft 12 is cylindrical, and the shaft 12 having this cylindrical outer peripheral surface is A spiral adhesive is held between the female screw portion 16 and the outer peripheral surface of the shaft 12 press-fitted to the inner peripheral side of the female screw portion 16 by a screw groove of the female screw portion 16. A space 17 is provided, and a large amount of adhesive is held in the adhesive holding space 17.

The sole portion 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the sole portion 4 side, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above configuration, first, an adhesive is applied to one or both of the tapered surface 11 and the tapered portion 8 of the weight 10 and the weight 10 is attached to the hosel portion 3. It is inserted into the shaft insertion hole 5 from the side and adhesively fixed to the tapered portion 8. Next, an adhesive is applied to one or both of the outer peripheral surface of the distal end portion and the cylindrical inner surface portion 9 of the shaft 12, and the shaft 12 is inserted into the shaft insertion hole until the distal end portion of the shaft 12 abuts against the rear end portion 10a of the weight 10. 5 and is adhesively fixed to the cylindrical inner surface portion 9 having the female screw portion 16.

The golf club head having the above configuration has the following effects.

That is, first, a shaft insertion hole 5 is formed to penetrate from the hosel portion 3 to the sole portion 4 of the head body 1 made of titanium, and the distal end of the shaft insertion hole 5 has a larger specific gravity than the head body 1. A weight 10 made of brass having a plug shape is attached.
0 is mounted on a relatively heel portion of the head, the center of gravity G of the head is
Are moved to the heel side as compared with the center of gravity position G 'when no is mounted. Therefore, even if a general golfer hits the ball at the relatively heel-side portion of the face as in the past, the center of gravity position G and the actual hitting position match, or the ball is not so far away. The probability of hitting the ball in the area is increased, and the possibility of hitting the ball and reducing the flight distance is reduced. The movement of the position of the center of gravity is approximately 2 for 5 g of weight 10.
mm, and it is practical to set the weight of the weight 10 to about 6 to 10 g.

Further, since the shaft 12 is fixedly inserted into the shaft insertion hole 5 so that the front end thereof abuts against the rear end 10a of the weight 10, the front end of the shaft 12 is The insertion is stopped when the weight 10 is abutted against the rear end 10a of the weight 10 mounted in the shaft insertion hole 5. Therefore, the insertion depth of the shaft 12 can always be kept constant without complicated positioning work.

A tapered portion 8 whose inner diameter gradually decreases toward the sole portion 4 is provided at the tip of the shaft insertion hole 5, and a tapered surface 11 corresponding to the tapered portion 8 is provided on the outer peripheral surface of the weight 10. Since the tapered portion 8 and the tapered surface 11 are axially engaged with each other, the weight 10 can be prevented from moving in the sole 4 direction. Also, regarding the hosel part 3 direction, the shaft 12
The movement can be prevented by the insertion. Therefore, it is possible to effectively prevent the weight 10 from dropping off from the head or rattling in the head.

Further, since the tip 10b of the weight 10 is exposed to the outer surface of the sole 4 in an elliptical shape, it is possible to provide an aesthetic appearance, and at the same time, the center of gravity G of the head is shifted toward the heel. Since it is possible to visually inform the golfer of the fact, it is possible to give a sense of security to the general golfer.

Since an adhesive holding space 17 is formed between the female screw portion 16 and the outer peripheral surface of the shaft 12 inserted into the inner peripheral side of the female screw portion 16, the adhesive holding space 17 is formed by the screw groove of the female screw portion 16. A large amount of adhesive can be held in the adhesive holding space 17. Therefore, the shaft 12 can be firmly adhered to the head main body 1 by the large amount of adhesive.

Third Embodiment As shown in FIG. 5, a golf club head according to this embodiment first includes a titanium head body (also referred to as a wood head or a club head) 1 and an inner portion thereof. The head body 1 having a hollow portion 2 is provided with a shaft insertion hole 5 extending from a hosel portion 3 which is a shaft insertion port to a sole portion 4 which is a bottom surface.
Are formed obliquely through. Therefore, the shaft insertion hole 5 has a tubular portion 7 including the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And the sole portion 4, the entire length of which is surrounded by the female screw portion 16 having a predetermined pitch on the inner surface thereof.

A brass weight 10 having a substantially plug-like shape is attached to the tip (the lower end in the figure) of the shaft insertion hole 5, and the weight 10 has an external thread 1 on its outer peripheral surface.
8 are provided over the entire length. Therefore, the weight 10 is fixed to the head main body 1 by screwing the male screw portion 18 into the female screw portion 16. If an adhesive (not shown) is attached between the male screw portion 18 and the female screw portion 16, the fixing strength can be further improved. The rear end (upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A hollow shaft 12 is inserted into the shaft insertion hole 5 from the hosel 3 side, and the female screw 1
6 is fixed to the inner surface of the shaft insertion hole 5 provided with an adhesive (not shown). The shaft 12 is
The distal end is inserted into the shaft insertion hole 5 until the distal end abuts against the rear end 10 a of the weight 10. No male screw portion corresponding to the female screw portion 16 is provided on the outer peripheral surface of the shaft 12, the outer peripheral surface of the shaft 12 is cylindrical, and the shaft 12 having this cylindrical outer peripheral surface is A spiral adhesive is held between the female screw portion 16 and the outer peripheral surface of the shaft 12 press-fitted to the inner peripheral side of the female screw portion 16 by a screw groove of the female screw portion 16. A space 17 is provided, and a large amount of adhesive is held in the adhesive holding space 17.

The sole 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the side of the sole 4, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above configuration, first, the weight 10 having the male screw portion 18 is screwed into the shaft insertion hole 5 having the female screw portion 16, and the tip of the shaft insertion hole 5. Attach and fix to the part. Next, an adhesive is applied to one or both of the outer peripheral surface of the distal end portion of the shaft 12 and the inner surface of the shaft insertion hole 5, and the shaft 12 is inserted until the distal end portion of the shaft 12 abuts against the rear end portion 10 a of the weight 10. It is inserted into the hole 5 and adhesively fixed to the inner surface of the shaft insertion hole 5 having the female screw portion 16.

The golf club head having the above configuration has the following effects.

That is, first, a shaft insertion hole 5 is formed to penetrate from the hosel portion 3 to the sole portion 4 of the head body 1 made of titanium, and the tip of the shaft insertion hole 5 has a larger specific gravity than the head body 1. A weight 10 made of brass having a plug shape is attached.
0 is mounted on a relatively heel portion of the head, the center of gravity G of the head is
Are moved to the heel side as compared with the center of gravity position G 'when no is mounted. Therefore, even if a general golfer hits the ball at the relatively heel-side portion of the face as in the past, the center of gravity position G and the actual hitting position match, or the ball is not so far away. The probability of hitting the ball in the area is increased, and the possibility of hitting the ball and reducing the flight distance is reduced. The movement of the position of the center of gravity is approximately 2 for 5 g of weight 10.
mm, and it is practical to set the weight of the weight 10 to about 6 to 10 g.

Further, since the shaft 12 is fixedly inserted into the shaft insertion hole 5 so that the front end thereof abuts against the rear end 10a of the weight 10, the front end of the shaft 12 is The insertion is stopped when the weight 10 is abutted against the rear end 10a of the weight 10 mounted in the shaft insertion hole 5. Therefore, the insertion depth of the shaft 12 can always be kept constant without complicated positioning work.

Since the female thread 16 is provided on the inner surface including the distal end of the shaft insertion hole 5 and the male thread 18 which is screwed into the female thread 16 is provided on the outer peripheral surface of the weight 10, the weight 10 is It can be prevented from moving in the direction of the part 4 and in the direction of the hosel part 3. Therefore, it is possible to effectively prevent the weight 10 from dropping off from the head or rattling in the head.

Further, since the distal end portion 10b of the weight 10 is exposed to the outer surface of the sole portion 4 in an elliptical shape, an aesthetic appearance can be provided, and the center of gravity G of the head is shifted toward the heel side. Since it is possible to visually inform the golfer of the fact, it is possible to give a sense of security to the general golfer.

Since an adhesive holding space 17 is provided between the female screw portion 16 and the outer peripheral surface of the shaft 12 inserted on the inner peripheral side of the female screw portion 16, the adhesive holding space 17 is formed by the screw groove of the female screw portion 16. A large amount of adhesive can be held in the adhesive holding space 17. Therefore, the shaft 12 can be firmly adhered to the head main body 1 by the large amount of adhesive.

Fourth Embodiment As shown in FIG. 6, the golf club head according to this embodiment first includes a titanium head main body (also referred to as a wood head or a club head) 1 and an inner portion thereof. The head body 1 having a hollow portion 2 is provided with a shaft insertion hole 5 extending from a hosel portion 3 which is a shaft insertion port to a sole portion 4 which is a bottom surface.
Are formed obliquely through. Therefore, the shaft insertion hole 5 has a tubular portion 7 including the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And a sole portion 4, the entire length of which is surrounded by the sole portion 4, that is, an annular tapered portion 8 whose inner diameter dimension gradually decreases downward.
A portion other than the tapered portion 8 is a cylindrical inner surface portion 9 corresponding to the outer peripheral shape of the shaft cylinder 19. The tapered portion 8 and the cylindrical inner surface 9 are formed continuously, and the maximum inner diameter of the tapered portion 8 and the inner diameter of the cylindrical inner surface 9 are set to be the same.

A brass weight 10 having a substantially plug shape is mounted on the inner peripheral side of the tapered portion 8 and is fixed by an adhesive (not shown). A tapered surface 11 having the same direction and the same inclination angle as the tapered portion 8 is provided on the outer peripheral surface of the weight 10 corresponding to the tapered portion 8 over the entire length.
The weight 10 is in close contact with the tapered portion 8 over the entire surface of the tapered surface 11. The rear end (the upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis, and is located at the boundary between the tapered portion 8 and the cylindrical inner surface 9. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A cylindrical shaft cylinder 19 is inserted into the shaft insertion hole 5 from the hosel part 3 side, and the cylindrical inner surface part 9 is formed.
Are fixed by an adhesive (not shown). The shaft cylinder 19 is formed of a non-metallic material such as resin or wood, and has a cylindrical portion 1 inserted into the shaft insertion hole 5.
9a and an annular head 19b mounted on the outside of the hosel portion 3 in a crown shape, and an annular step portion 19c provided at the boundary between the cylindrical portion 19a and the head portion 19b is inserted into the hosel portion 3 at the time of insertion. The insertion completion position is specified by contacting the end face of the plug.

A hollow shaft 12 is inserted from the hosel portion 3 side to the inner peripheral side of the barrel 19 and is fixed to the inner peripheral surface of the barrel 19 by an adhesive (not shown). The shaft 12 is inserted into the shaft insertion hole 5 until the tip of the shaft 12 abuts against the rear end 10 a of the weight 10.

The sole 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the sole 4 side, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above configuration, first, an adhesive is applied to one or both of the tapered surface 11 and the tapered portion 8 of the weight 10 and the weight 10 is attached to the hosel portion 3. It is inserted into the shaft insertion hole 5 from the side and adhesively fixed to the tapered portion 8. Next, an adhesive is applied to one or both of the outer peripheral surface of the cylindrical portion 19 a and the cylindrical inner surface portion 9 of the barrel 19, and the shaft barrel 19 is moved until the step portion 19 c contacts the end face of the hosel portion 3. Insert into the insertion hole 5,
It is adhesively fixed to the cylindrical inner surface 9. Then, the shaft 12
An adhesive is applied to one or both of the outer peripheral surface of the front end portion and the inner peripheral surface of the shaft cylinder 19, and the shaft 12 is inserted into the shaft insertion hole 5 until the front end portion of the shaft 12 abuts against the rear end portion 10 a of the weight 10. Then, it is bonded and fixed to the inner peripheral surface of the barrel 19.

In the golf club head having the above-described structure, the head is swung with respect to the shaft 12 at the moment of impact by the elasticity of the non-metallic barrel 19 to increase the hitting force. The same effects as in the embodiment can be obtained.

Fifth Embodiment As shown in FIG. 7, a golf club head according to the fifth embodiment first includes a titanium head body (also referred to as a wood head or a club head) 1 and an inner portion. The head body 1 having a hollow portion 2 is provided with a shaft insertion hole 5 extending from a hosel portion 3 which is a shaft insertion port to a sole portion 4 which is a bottom surface.
Are formed obliquely through. Therefore, the shaft insertion hole 5 has a tubular portion 7 including the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And a sole portion 4, the entire length of which is surrounded by the sole portion 4, that is, an annular tapered portion 8 whose inner diameter dimension gradually decreases downward.
A portion other than the tapered portion 8 is a cylindrical inner surface portion 9 corresponding to the outer peripheral shape of the shaft cylinder 19, and a female screw portion 16 having a predetermined pitch is provided on the cylindrical inner surface portion 9 over the entire length. It is provided. The tapered portion 8 and the cylindrical inner surface 9 are formed continuously, and the maximum inner diameter of the upper end of the tapered portion 8 and the inner diameter of the cylindrical inner surface 9 are set to be the same.

A brass weight 10 having a substantially plug shape is mounted on the inner peripheral side of the tapered portion 8 and is fixed by an adhesive (not shown). A tapered surface 11 having the same direction and the same inclination angle as the tapered portion 8 is provided on the outer peripheral surface of the weight 10 corresponding to the tapered portion 8 over the entire length.
The weight 10 is in close contact with the tapered portion 8 over the entire surface of the tapered surface 11. The rear end (the upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis, and is located at the boundary between the tapered portion 8 and the cylindrical inner surface 9. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A cylindrical shaft cylinder 19 is inserted into the shaft insertion hole 5 from the hosel part 3 side, and is fixed to the cylindrical inner surface part 9 having the female screw part 16 by an adhesive (not shown). I have. The barrel 19 is formed of a non-metallic material such as resin or wood, and is integrally provided with a cylindrical portion 19a inserted into the shaft insertion hole 5 and an annular head 19b mounted in a crown shape outside the hosel portion 3. The insertion completion position is specified by the annular step portion 19c provided at the boundary between the cylindrical portion 19a and the head portion 19b abutting on the end face of the hosel portion 3 at the time of insertion. The male screw portion corresponding to the female screw portion 16 is not provided on the outer peripheral surface of the barrel 19, and the outer peripheral surface of the barrel 19 is cylindrical. 16 is press-fitted into the inner peripheral side of the hosel portion 3 from the direction of the hosel portion 3, and is formed between the female screw portion 16 and the outer peripheral surface of the shaft cylinder 19 press-fitted into the inner peripheral side of the female screw portion 16 by a spiral groove formed by the female screw portion 16. The adhesive holding space 17 is provided, and a large amount of adhesive is held in the adhesive holding space 17.

The hollow shaft 12 is inserted from the hosel part 3 side to the inner peripheral side of the barrel 19, and is fixed to the inner peripheral surface of the barrel 19 with an adhesive (not shown). The shaft 12 is inserted into the shaft insertion hole 5 until the tip of the shaft 12 abuts against the rear end 10 a of the weight 10.

The sole 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the side of the sole 4, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above structure, first, an adhesive is applied to one or both of the tapered surface 11 and the tapered portion 8 of the weight 10 and the weight 10 is attached to the hosel portion 3. It is inserted into the shaft insertion hole 5 from the side and adhesively fixed to the tapered portion 8. Next, an adhesive is applied to one or both of the outer peripheral surface of the cylindrical portion 19 a and the cylindrical inner surface portion 9 of the barrel 19, and the shaft barrel 19 is moved until the step portion 19 c contacts the end face of the hosel portion 3. Insert into the insertion hole 5,
It is adhesively fixed to the cylindrical inner surface portion 9 having the female screw portion 16.
Next, an adhesive is applied to one or both of the outer peripheral surface of the distal end portion of the shaft 12 and the inner peripheral surface of the shaft cylinder 19, and the shaft 12 is moved until the distal end portion of the shaft 12 hits the rear end portion 10 a of the weight 10. Insert into the insertion hole 5,
It is adhesively fixed to the inner peripheral surface of the shaft cylinder 19.

The golf club head having the above-described structure has the following effects in addition to the fact that the head swings with respect to the shaft 12 at the moment of impact due to the elasticity of the non-metallic barrel 19 to increase the hitting force. Play.

That is, first, a shaft insertion hole 5 is formed to penetrate from the hosel portion 3 to the sole portion 4 of the head body 1 made of titanium, and the tip of the shaft insertion hole 5 has a larger specific gravity than the head body 1. A weight 10 made of brass having a plug shape is attached.
0 is mounted on a relatively heel portion of the head, the center of gravity G of the head is
Are moved to the heel side as compared with the center of gravity position G 'when no is mounted. Therefore, even if a general golfer hits the ball at the relatively heel-side portion of the face as in the past, the center of gravity position G and the actual hitting position match, or the ball is not so far away. The probability of hitting the ball in the area is increased, and the possibility of hitting the ball and reducing the flight distance is reduced. The movement of the position of the center of gravity is approximately 2 for 5 g of weight 10.
mm, and it is practical to set the weight of the weight 10 to about 6 to 10 g.

Since the shaft 12 is fixedly inserted into the shaft insertion hole 5 so that the front end thereof abuts against the rear end 10 a of the weight 10, the front end of the shaft 12 is inserted in advance when the shaft 12 is inserted. The insertion is stopped when the weight 10 is abutted against the rear end 10a of the weight 10 mounted in the shaft insertion hole 5. Therefore, the insertion depth of the shaft 12 can always be kept constant without complicated positioning work.

A tapered portion 8 whose inner diameter is gradually reduced toward the sole portion 4 is provided at the tip of the shaft insertion hole 5, and a tapered surface 11 corresponding to the tapered portion 8 is provided on the outer peripheral surface of the weight 10. Since the tapered portion 8 and the tapered surface 11 are axially engaged with each other, the weight 10 can be prevented from moving in the sole 4 direction. Also, regarding the hosel part 3 direction, the shaft 12
The movement can be prevented by the insertion. Therefore, it is possible to effectively prevent the weight 10 from dropping off from the head or rattling in the head.

The distal end portion 10b of the weight 10 is exposed to the outer surface of the sole portion 4 in an elliptical shape, so that an aesthetic appearance can be provided. In addition, the center of gravity G of the head moves toward the heel side. Since it is possible to visually inform the golfer of the fact, it is possible to give a sense of security to the general golfer.

Further, since the adhesive holding space 17 is provided between the female screw portion 16 and the outer peripheral surface of the shaft cylinder 19 inserted on the inner peripheral side of the female screw portion 16 by the screw groove of the female screw portion 16, This adhesive holding space 17 can hold a large amount of adhesive. Therefore, the shaft cylinder 19 can be firmly bonded to the head main body 1 by the bonding with the large amount of the adhesive.

Sixth Embodiment As shown in FIG. 8, the golf club head according to the sixth embodiment first includes a titanium head main body (also referred to as a wood head or a club head) 1 and an inner portion thereof. The head body 1 having a hollow portion 2 is provided with a shaft insertion hole 5 extending from a hosel portion 3 which is a shaft insertion port to a sole portion 4 which is a bottom surface.
Are formed obliquely through. Therefore, the shaft insertion hole 5 has a tubular portion 7 including the annular hosel portion 3 and the heel side outer wall 6 of the head body 1 continuous with the hosel portion 3.
And the sole portion 4, the entire length of which is surrounded by the female screw portion 16 having a predetermined pitch on the inner surface thereof.

A substantially plug-shaped weight 10 made of brass is attached to the tip (the lower end in the figure) of the shaft insertion hole 5, and the weight 10 has an external thread 1 on its outer peripheral surface.
8 are provided over the entire length. Therefore, the weight 10 is fixed to the head main body 1 by screwing the male screw portion 18 into the female screw portion 16. If an adhesive (not shown) is attached between the male screw portion 18 and the female screw portion 16, the fixing strength can be further improved. The rear end (upper end in the figure) 10a of the weight 10 is formed in a flat shape perpendicular to the central axis. The tip portion 10b of the weight 10 is exposed on the outer surface of the sole portion 4 and is finished in a curved shape so as to be flush with the outer surface of the sole portion 4.

A cylindrical shaft cylinder 19 is inserted into the shaft insertion hole 5 from the hosel portion 3 side, and is fixed to the inner surface of the shaft insertion hole 5 having the female screw portion 16 with an adhesive (not shown). ing. The barrel 19 is formed of a non-metallic material such as resin or wood, and has a cylindrical portion 19 a inserted into the shaft insertion hole 5 and a hosel portion 3.
An annular head 19b mounted in a crown shape on the outside of the body, and an annular step 19c provided at the boundary between the cylindrical portion 19a and the head 19b comes into contact with the end face of the hosel portion 3 at the time of insertion. Specifies the insertion completion position. The male screw portion corresponding to the female screw portion 16 is not provided on the outer peripheral surface of the barrel 19, and the outer peripheral surface of the barrel 19 is cylindrical. The female cylinder 16 and the barrel 1 press-fitted into the inner peripheral side of the female thread 16 from the hosel part 3 direction.
A spiral adhesive holding space 17 formed by a thread groove of the female screw portion 16 is provided between the adhesive holding space 17 and the outer peripheral surface of the screw 9, and a large amount of adhesive is held in the adhesive holding space 17.

The hollow shaft 12 is inserted from the hosel part 3 side to the inner peripheral side of the barrel 19, and is fixed to the inner peripheral surface of the barrel 19 by an adhesive (not shown). The shaft 12 is inserted into the shaft insertion hole 5 until the tip of the shaft 12 abuts against the rear end 10 a of the weight 10.

The sole portion 4 is provided with a hole 13 so as not to overlap with the opening of the shaft insertion hole 5 on the sole portion 4 side, and a sole plate 14 is mounted so as to close the hole 13. .

When assembling the golf club head or golf club having the above configuration, first, the weight 10 having the male screw portion 18 is screwed into the shaft insertion hole 5 having the female screw portion 16 and the tip of the shaft insertion hole 5 is inserted. Attach and fix to the part. Next, the cylindrical portion 19 of the shaft cylinder 19
a, an adhesive is applied to one or both of the outer peripheral surface and the inner surface of the shaft insertion hole 5, and the shaft cylinder 19 is moved to the stepped portion 1.
9c is inserted into the shaft insertion hole 5 until it comes into contact with the end face of the hosel portion 3, and is adhesively fixed to the inner surface of the shaft insertion hole 5 having the female screw portion 16. Then, the shaft 12
An adhesive is applied to one or both of the outer peripheral surface of the front end portion and the inner peripheral surface of the shaft cylinder 19, and the shaft 12 is inserted into the shaft insertion hole 5 until the front end portion of the shaft 12 abuts against the rear end portion 10 a of the weight 10. Then, it is bonded and fixed to the inner peripheral surface of the barrel 19.

The golf club head having the above-described structure has the following effects in addition to the fact that the head swings with respect to the shaft 12 at the moment of impact due to the elasticity of the non-metallic barrel 19, thereby increasing the hitting force. Play.

That is, first, a shaft insertion hole 5 is formed to penetrate from the hosel portion 3 to the sole portion 4 of the head body 1 made of titanium, and the tip of the shaft insertion hole 5 has a larger specific gravity than the head body 1. A weight 10 made of brass having a plug shape is attached.
0 is mounted on a relatively heel portion of the head, the center of gravity G of the head is
Are moved to the heel side as compared with the center of gravity position G 'when no is mounted. Therefore, even if a general golfer hits the ball at the relatively heel-side portion of the face as in the past, the center of gravity position G and the actual hitting position match, or the ball is not so far away. The probability of hitting the ball in the area is increased, and the possibility of hitting the ball and reducing the flight distance is reduced. The movement of the position of the center of gravity is approximately 2 for 5 g of weight 10.
mm, and it is practical to set the weight of the weight 10 to about 6 to 8 g.

Since the shaft 12 is fixedly inserted into the shaft insertion hole 5 so that the front end thereof abuts against the rear end 10 a of the weight 10, the front end of the shaft 12 is inserted in advance when the shaft 12 is inserted. The insertion is stopped when the weight 10 is abutted against the rear end 10a of the weight 10 mounted in the shaft insertion hole 5. Therefore, the insertion depth of the shaft 12 can always be kept constant without complicated positioning work.

Since the female screw 16 is provided on the inner surface including the tip of the shaft insertion hole 5 and the male screw 18 which is screwed into the female screw 16 on the outer peripheral surface of the weight 10, the weight 10 is It can be prevented from moving in the direction of the part 4 and in the direction of the hosel part 3. Therefore, it is possible to effectively prevent the weight 10 from dropping off from the head or rattling in the head.

Further, since the distal end portion 10b of the weight 10 is exposed to the outer surface of the sole portion 4 in an elliptical shape, an aesthetic appearance can be provided, and at the same time, the center of gravity G of the head is shifted toward the heel side. Since it is possible to visually inform the golfer of the fact, it is possible to give a sense of security to the general golfer.

Further, since the adhesive holding space 17 is provided between the female screw portion 16 and the outer peripheral surface of the shaft cylinder 19 inserted on the inner peripheral side of the female screw portion 16 by the screw groove of the female screw portion 16, This adhesive holding space 17 can hold a large amount of adhesive. Therefore, the shaft cylinder 19 can be firmly bonded to the head main body 1 by the bonding with the large amount of the adhesive.

Seventh Embodiment As shown in FIG. 9, in the golf club head according to this embodiment, the hollow shaft 12 has a substantially plug-like shape attached to the distal end of the shaft insertion hole 5. The shaft insertion hole 5 is brought into contact with the rear end 10a of the brass weight 10 to be presented.
And the rear end 1 of the weight 10
0a, a substantially columnar projection 10c fitted on the inner peripheral side of the distal end of the hollow shaft 12 is integrally formed, so that only the weight 10 and the head main body 1 and the shaft 12 and the head main body 1 are provided. Instead, the weight 10 and the shaft 12 can be fixed in a state where they are centered.

The other configuration is the same as that of the above-described first embodiment, and thus has the same effects as the first embodiment. However, the same configuration as any of the second to sixth embodiments has the same effects. May be.

[0087]

The present invention has the following effects.

That is, in the golf club head according to the first or second aspect of the present invention having the above configuration, the shaft is inserted from the hosel portion to the sole portion of the metal head body. A hole having a larger specific gravity than the head body is attached to the tip of the shaft insertion hole, and the weight is attached to a portion of the head relatively near the heel, so that the center of gravity of the head is The position is shifted to the heel side as compared with the position of the center of gravity when the weight is not mounted. Therefore, even if a general golfer hits the ball at the relatively heel side of the face as before, the center of gravity position and the actual hitting position match, or they are not so far apart, so the sweet area Increases the probability of hitting the ball, reducing the possibility of hitting the ball and reducing the flight distance. Therefore, it is possible to provide a golf club which is easy to handle for a general golfer and has high reliability.

In addition to the above, the golf club head according to the third aspect of the present invention having the above-described structure,
Since the shaft is abutted against the rear end of the weight and inserted and fixed in the shaft insertion hole, when the shaft is inserted, the insertion is stopped when the front end of the shaft is abutted against the rear end of the weight. . Therefore, the insertion depth of the shaft can always be kept constant without complicated positioning work. In addition, since the hosel portion side of the weight is closed by the shaft inserted and fixed in the shaft insertion hole, the weight can be prevented from moving in the direction of the hosel portion. It is possible to suppress rattling with the.

In the golf club head according to the fourth aspect of the present invention having the above-described structure, a tapered portion whose inner diameter is gradually reduced toward the sole portion is provided at the tip of the shaft insertion hole. Since the surface is provided with a tapered surface corresponding to the tapered portion, the weight can be prevented from moving in the direction of the sole portion by engagement of the tapered portion and the tapered surface. Dropping from the main body and rattling in the head main body can be suppressed.

In the golf club head according to the fifth aspect of the present invention having the above-described structure, a tapered portion whose inner diameter is gradually reduced toward the sole portion is provided at the tip of the shaft insertion hole. A tapered surface corresponding to the tapered portion is provided on the surface, a female screw portion is provided on the inner surface other than the tapered portion of the shaft insertion hole, and a female screw portion is provided between the female screw portion and a shaft or a shaft cylinder inserted into the inner periphery of the female screw portion. Since the adhesive holding space is provided by the thread groove, the weight can be prevented from moving in the direction of the sole portion by the engagement between the tapered portion and the tapered surface, and the weight falls off the head body in this direction. Or rattling in the head body can be suppressed.
Also, since a large amount of adhesive is held in the adhesive holding space, the shaft or the barrel can be firmly bonded to the head body.

In the golf club head according to the sixth aspect of the present invention having the above structure, a female screw portion is provided on the inner surface including the tip of the shaft insertion hole, and the female screw portion is screwed to the peripheral surface of the weight. A male screw portion is provided, and an adhesive holding space is provided between the female screw portion and a shaft or shaft cylinder inserted into the inner periphery of the female screw portion by a screw groove of the female screw portion. By being screwed, the weight can be firmly fixed to the head main body, and the weight can be prevented from falling off the head main body or rattling in the head main body. Also, since a large amount of adhesive is held in the adhesive holding space, the shaft or the barrel can be firmly bonded to the head body.

Further, in the golf club head according to the seventh aspect of the present invention having the above-described structure, the shaft is inserted into and fixed to the shaft insertion hole so as to abut against the rear end of the weight. Since the end is provided with a projection that is fitted on the inner peripheral side of the tip of the hollow shaft, not only the weight and the head body, but also the weight and the shaft, not only the weight and the head body, but also the weight and the shaft. It can be fixed in the centered state, and the fixing force can be increased accordingly.

[Brief description of the drawings]

FIG. 1 is a front view of a golf club head according to a first embodiment of the present invention.

FIG. 2 is a bottom view of the head.

FIG. 3 is a sectional view of the head.

FIG. 4 is a sectional view of a golf club head according to a second embodiment of the present invention.

FIG. 5 is a sectional view of a golf club head according to a third embodiment of the present invention.

FIG. 6 is a sectional view of a golf club head according to a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view of a golf club head according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view of a golf club head according to a sixth embodiment of the present invention.

FIG. 9 is a cross-sectional view of a golf club head according to a seventh embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Head main body 2 Hollow part 3 Hosel part 4 Sole part 5 Shaft insertion hole 6 Heel side outer wall 7 Cylindrical part 8 Taper part 9 Cylindrical inner surface part 10 Weight 10a Rear end part 10b Tip part 10c Protrusion part 11 Tapered surface 12 Shaft 13 Hole 14 Sole plate 15 Face 16 Internal thread 17 Adhesive holding space 18 External thread 19 Shaft tube 19a Cylindrical portion 19b Head 19c Step 19 G Position of center of gravity

Claims (7)

[Claims] 1. A shaft insertion hole (5) is formed from a hosel portion (3) to a sole portion (4) of a metal head main body (1), and the head main body is provided at a tip end of the shaft insertion hole (5). (1) A golf club head, wherein a weight (10) having a larger specific gravity is mounted. 2. A shaft insertion hole (5) is formed from a hosel part (3) to a sole part (4) of a metal head main body (1), and the head main body is formed at a tip end of the shaft insertion hole (5). (1) A head for a golf club, wherein a weight (10) having a higher specific gravity is attached, and a shaft cylinder (19) is inserted into and fixed to the shaft insertion hole (5) from the hosel part (3) side. 3. The golf club head according to claim 1, wherein the shaft has a rear end portion of the weight.
A golf club head characterized in that it is inserted into and fixed to a shaft insertion hole (5) so as to abut against a). 4. The golf club head according to claim 1, wherein a tapered portion (8) whose inner diameter gradually decreases toward the sole portion (4) is provided at a tip end of the shaft insertion hole (5). A head for a golf club, wherein a tapered surface (11) corresponding to the tapered portion (8) is provided on a peripheral surface of the weight (10). 5. The golf club head according to claim 1, wherein a tapered portion (8) whose inner diameter gradually decreases toward a sole portion (4) is provided at a tip end of the shaft insertion hole (5). A tapered surface (11) corresponding to the tapered portion (8) is provided on a peripheral surface of the weight (10), and a female screw portion (16) is formed on an inner surface of the shaft insertion hole (5) other than the tapered portion (8). Is provided between the female screw part (16) and the shaft (12) or the shaft cylinder (19) inserted into the inner periphery of the female screw part (16) by an adhesive formed by a thread groove of the female screw part (16). A golf club head provided with a holding space (17). 6. The golf club head according to claim 1, wherein a female screw portion (16) is provided on an inner surface including a tip portion of the shaft insertion hole (5), and the female screw portion is provided on a peripheral surface of a weight (10). A male screw part (18) screwed into the part (16) is provided, and the female screw part (16) and a shaft (12) or a barrel (19) inserted into the inner periphery of the female screw part (16) are provided.
A golf club head characterized in that an adhesive holding space (17) is provided between the female screw part (16) and the screw groove of the female screw part (16). 7. The golf club head according to claim 1, wherein the shaft (12) has a rear end (10) of the weight (10).
a) and is fixedly inserted into the shaft insertion hole (5) so as to abut against the inner end of the front end of the hollow shaft (12) at the rear end (10a) of the weight (10). A golf club head provided with a projection (10c) to be combined.