JP2000093569A - Structure for connecting head and shaft of gate ball stick - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent play and error in squareness when connecting the head and shaft of a gate ball stick, so as to permit permanent use of the stick, by firmly connecting the head and the shaft together. SOLUTION: In a gate ball stick, a head 1 and a shaft 2 are firmly connected together at two far apart points at lower and upper ends to achieve accurate squareness between the head 1 and the shaft 2 to allow the user to strike a ball in the desired direction and to prevent the shaft from being slackened by the impact of ball striking. A structure that will not fail (generating of play) even if used many times is provided to permit permanent use and to make the structure applicable to ball striking outfits of well known techniques.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower and upper end of a stick 1 for a ball ball, which is separated from a head 1 and a shaft 2 considerably.
The ball is firmly connected at the point, and the right angle between the head 1 and the shaft 2 is accurately set so that the ball can be hit in the desired direction, and the shaft does not loosen due to the impact of hitting the ball. The present invention relates to a connection structure between a head and a shaft of a gate ball stick.

[0002]

2. Description of the Related Art Conventionally, the connection between a head 1 and a shaft 2 is as follows.
As a known technique, Japanese Utility Model Publication No. Sho 60 (1985) -33979
The hitting tool of No. 1 is implemented as shown in FIG. In this structure, an insertion member 33 is inserted into a receiving member 32 which is implanted in a head 31 and has a tapered tapered hole formed on an inner periphery thereof.
After that, the insertion member 33 is pressed against the receiving member 32 by the fastener 34 and the shaft 36 is prevented from rotating by the rotation preventing device 35. However, the receiving member 32 and the insertion member 33 are formed in a single piece. -Because the ball is fixed on the taper surface and the ball is struck from the lateral direction, the manufacturing error between the tapered taper surfaces (taper error due to tolerance).
Error which cannot be avoided in the processing) causes backlash,
This backlash is further increased by the impact when the ball is hit, and it is difficult to make the head 31 and the shaft 36 perpendicular to each other.
The ball 6 is easy to loosen and tends to be hard to hit because the ball is hit in an unstable state with play. In order to eliminate this drawback, a Japanese Patent Application No. 5-247626 (Japanese Patent Application Laid-Open No.
887) and Japanese Patent Application No. 7-308074 (Japanese Unexamined Patent Application Publication No.
No. 40843) and the gate boat of Japanese Patent Application No. 9-90260.
We have filed three applications for the connection structure of the stick for the stylus, but the present invention of this application has improved these
In this connection, the head 1 and the shaft 2 are more firmly connected at a point, so that the right angle between the head 1 and the shaft 2 is more accurately obtained, and the shaft 2 is not loosened by the impact when the ball is hit, so that the shaft 2 can be used for a long time.

[0003]

SUMMARY OF THE INVENTION Head 1 and shaft 2
Are firmly connected to accurately determine the perpendicularity between the head 1 and the shaft 2 and to prevent the shaft 2 from being loosened by an impact when a ball is hit.

[0004]

The head 1 and the shaft 2 are firmly connected at two points, that is, the lower and upper ends, which are far apart from each other. The most important feature is that the shaft is not loosened by the impact of hitting the ball. In addition, it has been realized that the structure can be used for a long time by using a structure that does not cause a failure (no backlash) even if it is used many times, and that it can be applied to a hitting tool of a known technique described in the section of the prior art.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 will be described with reference to FIGS. 1 to 8. In the drawings, reference numeral 1 denotes a head, 2 denotes a shaft, 3 denotes a fitting cylinder, and a taper hole 4 is formed on the inner periphery of the fitting cylinder 3. A screw 5 is formed on the outer periphery, and a detent pin 6 is attached to a lower portion. Then, an adhesive is applied to the external thread 5 of the fitting cylinder 3 so that the head 1
It is implanted (screwed) into a hole 7 provided in the middle part, a gap 8 is provided around the upper part of the hole 7, and a screw 9 is provided in the lower part of the head 1.
To prevent the fitting cylinder 3 from turning. still,
Instead of the detent pin 6, another type of detent device may be attached. In the present invention, the tape of the fitting cylinder 3 is used.
A straight hole 10 is formed in the upper part of the hole 4 and a male screw 5 is formed.
A horizontal taper retainer 13 is formed above the female screw 12 and a taper hole 14 is formed upward at the upper part of the taper retainer 13. The tightening cylinder 11 formed as above is loosely fitted to the lower part of the shaft 2,
Further, a tapered surface 15 whose lower portion is adapted to the lower portion of the tapered hole 4 is short, and an upper portion forms a core 17 having an inverted tapered surface 16. A taper ring 18 is provided between the reverse taper surface 16 and the straight hole 10 so as to be expandable and contractible in the radial direction. In addition, 19 in the figure
Denotes a lateral groove adapted to the detent pin 6, 20 denotes a knurled vertical groove, and 25 denotes a handle. In the figure, reference numeral 26 denotes a grip, which is attached at a position slightly higher than the position at which the tightening cylinder 11 starts to be screwed into the fitting cylinder 3. In addition, a concave portion 27 is provided on the entire upper surface of the taper surface 15. In addition, grasp 26
In order to make it easier to clean the lower part of the tightening cylinder 11, the taper ring 18, and the reverse taper surface 16, furthermore, mount it at a higher position or attach it to a thin ring-shaped grip 26 with a knurled or shallower vertical. The groove 20 may be formed and attached. in this case,
The hole diameter of the tightening cylinder 11 is formed slightly larger so that the tightening cylinder 11 can easily pass through the ring-shaped grip 26.
Instead of the grip 26, a knurl or a shallow vertical groove 20 is used.
May be formed directly on the shaft 2. Although the screw 9 is used to fix the fitting cylinder 3 and the core body 17, a nail may be used instead of the screw 9. If an adhesive is applied to the screw 9 or the nail and screwed or driven into the screw 9, the screw 9 or the nail is firmly fixed. It does not come off when connected. Further, the material to be used may be formed of a synthetic resin or a light metal in order to reduce the weight of the structure. The above is the same in other embodiments. FIG. 8 shows a case in which the fitting cylinder 3 is formed to be longer, the longer portion is projected from the head 1 and
It is also formed longer. This embodiment can be applied to other embodiments.

FIGS. 9 to 12 show a tapered hole 4 according to a second embodiment.
Are formed continuously, and a tapering 18 that fits between the inverted tapered surface 16 and the tapered hole 4 is formed between the inverted tapered surface 16 and the tapered hole 4.
Intervening.

FIGS. 13 to 16 of the third embodiment show that a horizontal U-shaped coupling groove 23 is formed on the outer peripheral surface of the tapering 18 and divided into several vertical parts. The tapering 18 is integrated with a coiled spring 24 or an elastic body such as rubber. This application example is shown in FIG.
Thus, the present invention can be applied to the tapering 18 shown in FIG.

In each of the above embodiments, each tapering 1
Numeral 8 is formed of an elastic material such as plastic or metal or an elastic material such as rubber. The inner diameter of the tapering 18 is larger than the position where the tapering 18 is fixed to the straight hole 10 or the taper hole 4. A tapered surface is formed to fit the tapered surface 16 slightly above, and the outer diameter is formed slightly smaller than the diameter of the upper portion of the tapered hole 10 or the tapered hole 4.
(FIGS. 1 to 8) and 2 (FIGS. 9 to 12)
A vertical notch 21 is provided at a location, and a vertical elastic groove 22 is provided at several locations on the outer peripheral surface. The tapering 18 of the third embodiment (FIGS. 13 to 16) is shown in FIGS. 16 is formed. Incidentally, the inner diameter of each tapering 18 may be formed so as to fit the upper part of the inverted tapered surface 16. In the case of the straight hole 10, the tapering 18 formed in this way is, as shown in FIGS. 2, 8 and 13, when the tightening cylinder 11 is tightened, the tapering 18 is turned upside down. 16 and the outer periphery is crimped to the straight hole 10, so that the outer diameter of the tapering 18 increases and the notch 21 opens as shown in FIGS. In the case of the taper hole 4 in FIG.
When the tightening cylinder 11 is tightened, the tapering 18 expands by sliding down the reverse taper surface 16 and the outer periphery is pressed into the taper hole 4, so that the outer diameter of the tapering 18 as shown in FIG. And the notch 21 opens. When each of the taperings 18 loosens the tightening cylinder 11, the tapering 18 having elasticity automatically makes the reverse taper surface 16 as shown in FIG. 6, FIG. 12, and FIG. Since the taper 18 is lifted up and restored to the same state as at the time of manufacture, the diameter of the tapering 18 is reduced, and the notch 21 is closed. When the tapering 18 is crimped, the outer diameter of the tapering 18 is slightly different from that of the straight hole 10 or the taper hole 14 and the inner diameter is slightly different from the crimping surface of the reverse tapered surface 16. , The tapering 18 is made of an elastic material,
Further, since the elastic groove 22 is provided or divided into several parts in a vertical shape, the structure is adapted to fit the straight hole 10 or the tapered hole 4 and the reverse tapered surface 16 well. 2 can be connected at right angles.

FIGS. 18 to 21 of the fourth embodiment are similar to FIGS.
FIG. 18 shows a configuration in which a concave portion 27 is provided in the insertion member 33 or the receiving member 32 or both the insertion member 33 and the receiving member 32 of the hitting tool of the related art described in the section of the prior art. When the insertion member 33 is inserted into the receiving member 32,
A concave portion 27 is provided on the entire periphery of the intermediate portion excluding the lower portion and the upper portion which are pressure-bonded to the lower portion. FIG. 19 shows that the recess 27 is provided on the receiving member 32. In FIG. 20, the recess 27 of the insertion member 33 is mainly used, and the recess 27 is provided in the receiving member 32 on the symmetric side. FIG. 21 mainly shows the concave portion 27 of the receiving member 32,
The insertion member 33 on the symmetrical side is provided with a recess 27 short.

In FIG. 22 of the fifth embodiment, the receiving member 32 is formed to be longer, the longer portion protrudes from the head 31, and the insertion member 33 is formed to be longer. The concave portion 27 may be provided on the insertion member 33 side instead of the receiving member 32 side.

FIG. 23 shows an applied embodiment in which the grip 26 is
The fastening cylinder 11 is attached to a slightly loosened place.

FIG. 24 of the sixth embodiment shows a grip body 41 which is loosely fitted to the shaft 2, a male screw is formed in the upper body portion, the male body is loosely fitted to the shaft 2, and the inside is tapered. The fixing device 42 is shaped like a female screw at the lower part of the
And the inner periphery of the fixing device 42 is
And the outer periphery is formed in a taper shape, and a shaft fixing ring 43 divided vertically or in a row is mounted. After passing through the lower portion of the shaft 2, the tightening cylinder 11 is loosely fitted to the lower portion of the shaft 2 and the core 17 is attached. The shaft fixing ring 43 is formed of the same material as the tapering 18.

In FIGS. 25 to 28 of the seventh embodiment, FIG.
5 forms a spherical surface 44 around the entire lower end of the core body 17.
The tapered surface 15 may be formed at the lower end, and the spherical surface 44 may be formed at the upper end. FIG. 26 shows that a spherical surface 44 is also formed on the entire circumference of the upper end of the core body 17 of FIG.
The paring 18 is interposed. FIG. 27 shows a structure in which the core body 17 and the tightening cylinder 11 are formed longer than in FIG. 25, and a straight surface 45 is formed on the upper part of the tightening tube 11, and the straight surface 45 and the reverse taper surface are formed. A tapering 18 is interposed between the tapes 16.
The tapered surface 15 may be formed at the lower end of the core body 17 as shown in FIG. 2 of the first embodiment (FIGS. 1 to 8). 28, a spherical surface 44 is also formed on the entire circumference of the upper end of the core body 17 in FIG. 27, and the tapering 18 is interposed between the spherical surface 44 and the straight surface 45. The above embodiment is shown in FIGS. 17 and 4 (FIG. 1).
8 to 21) and FIG. 22 of the fifth embodiment.

[0014]

In the first embodiment (FIGS. 1 to 8), when the head 1 and the shaft 2 are connected, the core 17 is inserted into the fitting cylinder 3 and tightened as shown in FIG. When the cylinder 11 is tightened, the screwing force presses the taper surface 15 to the lower portion of the taper hole 4 via the tapering 18, so that the taper surface 15 is pressed against the taper hole 4. Then, when the tightening cylinder 11 is further tightened, the tapering 18 expands by sliding down the reverse taper surface 16 and the outer periphery is pressed against the straight hole 10, and at the same time, the tapering is performed.
Since the taper surface is pressed against the reverse taper surface 16, the head 1 and the shaft 2 can be firmly connected and the head 1 and the shaft 2 can be firmly connected.
The squareness can be accurately obtained. In particular, a concave portion 27 is provided on the entire circumference of the upper portion of the tapered surface 15 formed short, and
Has a strong connection at the lower and upper two points that are far apart from each other, so the frictional force (compression force) at the two points is strong, and it does not loosen even when subjected to the impact of a hit ball, and is always connected securely. And the right angle between the head 1 and the shaft 2 is always accurate, so that the ball can be accurately hit in the desired direction. In addition, a detent pin 6
Is attached, so even if you try to loosen it,
Prevents loosening. When the shaft 2 is detached from the head 1 as shown in FIG. 5, if the tightening cylinder 11 is loosened, the tapering 18 having elasticity automatically slides up the reverse tapered surface 16 so as to be manufactured. Restored to the same state as (Fig. 6)
Since the crimping force between the straight hole 10 and the reverse tapered surface 16 is also released, the shaft 2 can be easily removed from the head 1 as shown in FIG. Also, as shown in FIG.
The taper hole 4 and the taper hole 4 can be easily removed.
The taper angle of the taper surface 15 is drastically small, and
The taper angle between the taper surface 16 and the tapering 18 can also be reduced to the extent that the tapering 18 automatically moves up to further increase the crimping force. Also, since the knurled vertical groove 20 is formed in the tightening cylinder 11, it is easy to turn, and the grip 26 is also easy to hold because the vertical groove 20 is formed. The recess 27
Since it does not come into contact with the taper hole 4, rough finishing is sufficient, and labor for processing can be remarkably saved. FIG. 8 shows that the fitting cylinder 3 is formed so as to protrude from the head 1 and the fixed distance between the lower and upper ends of the taper surface 15 and the reverse taper surface 16 is longer than in FIG. Thus, the perpendicularity between the head 1 and the shaft 2 can be more accurately determined. Also, since the gap 8 is not required, the structure is simplified, and the fitting cylinder 3 can be implanted and fixed to the head 1 for a long time, so that the impact resistance at the time of hitting the ball is increased and the ball is stably used. You can do it. Therefore, there is no failure (no backlash), and it can be used for a long time.

9 to 12 of the second embodiment, the outer periphery of the tapering 18 is formed in a tapered shape so that the gap between the tapered hole 4 and the tapered hole 4 is increased as shown in FIG. When the tightening cylinder 11 is tightened, the tapering 18 easily enters the taper hole 4. In addition, since the tapering 18 has a tapered shape on both the outer and inner circumferences, the pressing force can be increased.

The tapering 18 in FIGS. 13 to 16 of the third embodiment uses a coil-shaped spring 24 or an elastic body such as rubber, and is elastically mechanically added, so that it is tightened as shown in FIG. When the shaft 2 is removed, as shown in FIG. 14, the reverse tapered surface 16 can be slid quickly, which is convenient for use. In this embodiment, the tapering 18 shown in FIGS.
Has the same effect.

FIG. 1 of a fourth embodiment in which the present invention is applied to the hitting tool shown in FIG. 17 (known art described in the section of the prior art).
8 to FIG. 21, FIG. 18 shows that a concave portion 27 is provided on the entire periphery of the intermediate portion of the insertion member 33, and the insertion member 33
Because it was structured to be pressed against the receiving member 32 at the upper two points,
The connection can be made firmly and the right angle between the head 31 and the shaft 36 can be accurately obtained. Further, since the concave portion does not require precision processing (rough finishing is sufficient), the processing accuracy of the lower and upper ends can be further improved. Therefore, the perpendicularity between the head 1 and the shaft 2 can be more accurately set, and the ball can be accurately hit in a desired direction. In FIG. 19, the same effect is obtained because the recess 27 is provided on the receiving member 32 side. 20 and 21, since the concave portion 27 is provided on the symmetrical side where the concave portion 27 is provided, the same effect can be obtained and the processing accuracy can be further improved.

FIG. 22 of the fifth embodiment is similar to FIG. 8 of the first embodiment (FIGS. 1 to 8).
The head 31 and the shaft 36 are formed so as to protrude more and extend the fixed distance between the lower and upper ends of the insertion member 33.
Can be obtained more accurately. Gap 8
Is not required, the structure is simplified, and the receiving member 32 can be implanted and fixed to the head 31 for a long time, so that the impact resistance at the time of hitting the ball increases and the ball can be used stably. Therefore, there is no failure (no backlash), and it can be used for a long time.

FIG. 23 of the applied embodiment shows that the grip 26 is attached to the place where the tightening cylinder 11 is slightly loosened, so that when the loosening is performed, the tapered surface 15 of the core body 17 is firmly inserted into the tapered hole 4. Even if it is difficult to come off, if the tightening cylinder 11 is loosened,
7, the shaft 2 can be easily pulled out since the contact surface comes off.

In FIG. 24 of the sixth embodiment, if the fixing clamp 40 is shifted to an arbitrary position and the fixing device 42 is tightened, the shaft fixing ring 43 is pressed against the shaft 2 and at the same time, the fixing device 42 is also fixed to the shaft fixing ring 43. Is fixed by crimping. Therefore, since the arbitrary position fixing grip 40 can be fixed to an arbitrary position of the shaft 2, it is used for simple gripping in the first to second embodiments (FIGS. 1 to 12), and for pulling out the core body 17 in the application example FIG. In the case of, it can be used properly according to the purpose of use, such as moving to the upper part, which is convenient for use.

In FIGS. 25 to 28 of the seventh embodiment, FIG.
5 is that a spherical surface 44 is formed at the lower end of the core body 17 and the spherical surface performs an automatic centripetal action at the time of tightening, so that the head 1 and the shaft 2 can be connected at a right angle and the ball is hit in a desired direction. Can be done. In FIG. 26, since the spherical surface 44 is also formed on the upper end of the core body 17, the automatic centripetal action can be further enhanced. FIG. 27 shows that the core body 17 and the tightening cylinder 11 are formed long and the fixed distance between the lower and upper ends is longer than that in FIG. 25.
The ball can be hit stably. FIG. 28 shows the heart 1
A spherical surface 44 is also formed at the upper end of 7 so that the automatic centripetal action is enhanced at the lower and upper ends at the time of tightening, so that the perpendicularity between the head 1 and the shaft 2 can be accurately obtained and the ball can be accurately formed. Can be stably hit in the desired direction.

In each of the above embodiments, the connection between the head 1 and the shaft 2 is performed by inserting the core body 17 into the fitting cylinder 3,
1 only needs to be tightened, but after the tightening cylinder 11 is slightly screwed into the fitting cylinder 3 (for example, FIGS. 5, 11, 14, and 24).
State), by holding the grip 26 and pressing the shaft 2 downward (toward the head 1), and then tightening the tightening cylinder 11, the head 1 and the shaft 2 can be connected more firmly. At the same time, the perpendicularity between the head 1 and the shaft 2 can be obtained more accurately. In addition, the present invention has a structure that does not break down (no backlash) even if it is used many times, so that it can be used for a long time and is fixed at two points, the lower and upper ends, which are far apart. It has various features such as being applicable to technology hitting tools.

[Brief description of the drawings]

 Example 1 (FIGS. 1 to 8)

FIG. 1 is a front view of a stick embodying the present invention.

FIG. 2 is a vertical sectional front view of the first embodiment.

FIG. 3 is a cross-sectional plan view of only the tapering 18 along line AA in FIG. 2;

FIG. 4 is a cross-sectional bottom view taken along line BB of FIG. 2;

FIG. 5 is a vertical sectional front view when the fastening tube 11 is loosened.

6 is a cross-sectional plan view of only the tapering 18 taken along line CC in FIG.

FIG. 7 is a longitudinal sectional front view when the fastening tube 11 is removed.

FIG. 8 is a longitudinal sectional front view when the fitting cylinder 3 and the core body 17 are formed longer. Example 2 (FIGS. 9 to 12)

FIG. 9 is a vertical sectional front view of the second embodiment.

FIG. 10 is a cross-sectional plan view of only the tapering 18 taken along line DD in FIG. 9;

FIG. 11 is a longitudinal sectional front view when the fastening cylinder 11 is loosened.

FIG. 12 is a cross-sectional plan view of only the tapering 18 along line EE in FIG. 11; Example 3 (FIGS. 13 to 16)

FIG. 13 is a partial longitudinal front view when the fastening tube 11 is fastened.

FIG. 14 is a partial longitudinal front view when the fastening cylinder 11 is loosened.

FIG. 15 is a cross-sectional plan view of only the tapering 18 along the line F in FIG. 13;

FIG. 16 is a cross-sectional plan view of only the tapering 18 along the line G in FIG. 14; Known technology

FIG. 17 is a longitudinal sectional front view of a known technique (hitting tool of Japanese Utility Model Publication No. Sho 60 (1985) -33979) described in the section of the prior art. Example 4 (FIGS. 18 to 21)

FIG. 18 is a longitudinal sectional front view when the present invention is applied to the known technique in FIG. 17;

FIG. 19 is a longitudinal sectional front view when the receiving member 32 is provided with a concave portion 27.

20 is a longitudinal sectional front view in the case where the concave portion 27 of the insertion member 33 is mainly used, and the concave portion 27 is provided in the receiving member 32 on the symmetric side short.

FIG. 21 is a longitudinal sectional front view in a case where the concave portion 27 of the receiving member 32 is mainly used and the concave portion 27 is provided short in the insertion member 33 on the symmetric side. Example 5

FIG. 22 is a longitudinal sectional front view when the receiving member 32 and the insertion member 33 are formed longer. Application example

FIG. 23 is a longitudinal sectional front view when the grip 26 is attached to a place where the tightening cylinder 11 is slightly loosened. Example 6

FIG. 24 is a vertical sectional front view of the sixth embodiment. Example 7 (FIGS. 25 to 28)

FIG. 25 is a vertical sectional front view of the seventh embodiment.

26 is a longitudinal sectional front view in the case where a spherical surface 44 is also formed on the entire circumference of the upper end of the core body 17 of FIG. 25.

27 is a vertical sectional front view when the core body 17 and the tightening cylinder 11 are formed to be longer than those in FIG.

28 is a vertical sectional front view in the case where a spherical surface 44 is also formed on the entire circumference of the upper end of the core body 17 in FIG. 27.

[Explanation of symbols]

 1 ‥‥ Head 2 ‥‥ Shaft 3 ‥‥ Fitting cylinder 4 ‥‥ Tapered hole 5 ‥‥ Male screw 6 ‥‥ Detent pin 7 ‥‥ Hole 8 ‥‥ Gap 9 ‥‥ Screw 10 ‥‥ Straight Hole 11 mm Tightening cylinder 12 mm female screw 13 mm tapering retainer 14 mm taper hole 15 mm tapered surface 16 mm inverted tapered surface 17 mm core 18 mm -Paring 19 ‥‥ Horizontal groove 20 ‥‥ Vertical groove 21 ‥‥ Notch 22 ‥‥ Elastic groove 23 ‥‥ Connection groove 24 ‥‥ Spring 25 ‥‥ Pattern 26 ‥‥ Grip 27 ‥‥ Recess 31 ‥‥ Head 32 ‥‥ Member 33 Insert member 34 Fastener 35 Rotation prevention device 36 Shaft 40 Optional position fixed grip 41 Main body 42 Fixed unit 43 Shaft fixing ring 44 Spherical surface 45 ‥ Straight surface

Claims (6)

[Claims] 1. An implant in a hole 7 provided in an intermediate portion of a head 1,
A taper hole 4 is formed on the inner periphery, and a straight hole 10 or a taper hole 4 is continuously formed on the upper part of the inner periphery of the fitting cylinder 3 having a screw 5 formed on the outer periphery. Tightening cylinder 1 screwed to screw 5
1 is formed, and a taper retainer 13 is formed on the upper part of the female screw 12, so that the tightening cylinder 11 is loosely fitted to the lower part of the shaft 2, and the taper hole 4 is formed on the lower part. A tapered surface 15 adapted to the lower portion is formed short, an upper portion of the tapered surface 15 is provided with a concave portion 27 all around, and an upper portion forms a core 17 having an inverted tapered surface 16 shape. The core body 17 is attached to the lower end of the shaft 2 and a taper ring 18 that can be expanded and contracted in the radial direction is interposed between the inverted taper surface 16 and the straight hole 10 or the tapered hole 4. The connection structure between the head and shaft of the gate ball stick, which is a feature. The inner diameter of the tapering 18 is set to the inverted tapered surface 16 slightly above the position where the tapering 18 is fixed to the tapered hole 10 and the tapered surface 45 or the tapered hole 4. Alternatively, a tapered surface conforming to the spherical surface 44 is formed, and the outer diameter is formed slightly smaller than the diameter of the straight hole 10 and the straight surface 45 or the upper part of the tapered hole 4. 1. Structure for connecting the head and shaft of the gate ball stick. 3. When the insertion member 33 is inserted into the receiving member 32, the concave portion 27 is provided in the insertion member 33 or the receiving member 32 on the entire periphery of the intermediate portion except for the lower portion and the upper portion which are pressed against each other. 2. The connection structure between a head and a shaft of a gate ball stake according to claim 1, wherein said connection member is provided on both of said receiving members. 4. The fitting tube 3 or the receiving member 32 is formed longer, and the longer portion protrudes from the head 1 or the head 31 and the core 17 or the insertion member 33 is formed longer. 4. A connection structure of a head and a shaft of the gate ball stick according to claim 1. 5. A spherical surface 44 is provided on the entire lower and upper ends of the core body 17.
5. A stake head for a gate ball according to claim 1, wherein a spherical surface is formed on one of the surfaces and a tapered surface or an inverted tapered surface is formed on the other. And shaft connection structure. 6. A grip body 41 which is loosely fitted to the shaft 2 is formed, a male screw is formed in the upper body portion, and the grip body 41 is loosely fitted to the shaft 2, and a taper-shaped fixing device 42 is formed inside. A female screw is formed in the lower part and screwed into the grip body 41. Inside the fixing device 42, the inner periphery slides on the shaft 2 and the outer periphery is formed in a tapered shape. A row or a plurality of divided shaft fixing rings 43 are attached, and the arbitrary position fixing grip 40 thus formed is passed through the lower part of the shaft 2,
4. The method according to claim 1, further comprising the step of loosely fitting the tightening cylinder to the lower portion of the shaft and attaching the core body thereto.
Of connection between head and shaft of gate ball stick