JP2002204845A - Swing practicing implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct a swing of golf or the like under the most adequate conditions. SOLUTION: This swing practicing implement has a rigid shaft 14 having a grip 11 as a gripping segment on its surface and a pendulum 12 which is elongated from the front end of the shaft 14 and has flexibility and restitutive elasticity to an approximately straight state. The grip 11 and the shaft 14 are separately formable and the shaft 14 can be arranged only within the grip 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing training device for correcting a swing, and more particularly to a swing training device for correcting a swing by swinging.

[0002]

2. Description of the Related Art Hitherto, a large number of training tools for correcting a golf swing have been invented. Such training tools are roughly classified into a type dedicated to swinging and a type attached to an actual club to check a swing.

[0003] As a training tool exclusively for swinging, for example, there is a training tool disclosed in JP-A-9-19524. This is such that a grip portion is provided at the base of a corrugated tube of a flexible tube, and a weight portion is provided at a tip portion. When a swing is performed with this training tool, a sound is generated due to the passage of air in the waveform tube, so that it is possible to check the quality of the swing by distinguishing this sound.

[0004] On the other hand, a type mounted on an actual club is disclosed in, for example, JP-A-7-155416. This is composed of a piezoelectric element that outputs electric power by applying a collision, and two LEDs attached to the piezoelectric element and emitting light by electric power from the piezoelectric element. This training tool is mounted on the upper surface of the club head so that the two LEDs are parallel to the club face surface. Then, when the ball is hit with this club, the LED emits light due to the impact of the impact, so that the direction of the face at the time of impact and the trajectory of the head thereafter can be confirmed.

However, these training tools can only confirm the result of the swing, so that it is possible to determine whether the swing is good or not, but it is not possible to know the correct swing trajectory.

In view of the above, a hinge mechanism is provided on a part of a shaft of a golf club as disclosed in Japanese Patent Application Laid-Open No. Hei 7-148298 so that the shaft can be broken at the hinge mechanism when the swing path is poor. There is. In addition, there are many other training tools configured so that the golf club itself can be deformed so as to actually hit the ball.

[0007] However, the practice tool obtained by deforming a golf club disclosed in Japanese Patent Application Laid-Open No. Hei 7-148298 or the like has a complicated structure, and thus has a problem in durability and is expensive. In addition, they could not swing indoors and could not easily perform a swing check.

In view of the above, a pendulum portion having a flexibility and length enough to be wound around the body is formed by forming a shaft so as to extend a predetermined length from the tip of the grip as in the technique of Japanese Utility Model No. 30444222. There has been proposed a golf practice tool for correcting a swing in which a golf club is formed so as to extend beyond the tip of the shaft.

[0009]

However, utility model No. 3
In the golf training tool disclosed in Japanese Patent No. 0442222, the pendulum portion is formed of a material having flexibility enough to wrap around the body, and further, in order to prevent the pendulum portion from being wound around the neck during swinging, A shaft is provided so as to extend from the tip of the grip by a predetermined length, and the pendulum is formed to extend beyond the tip of the shaft. Therefore, when swinging is performed using this golf practice tool, the vicinity of the joint between the shaft and the pendulum portion is locally bent, and a difference from the actual golf club's swing condition occurs. There is an improvement in that the swing cannot be corrected under the optimal condition for the swing.

Further, in this golf practice tool, the pendulum portion is made of a material having such a degree of flexibility that it can be wound around the body. Another improvement is that the tip hits an unexpected location on the body.

The present invention has been made in view of the above points, and an object of the present invention is to provide a swing training tool that can perform swing correction under optimum conditions.

Another object of the present invention is to provide a swing training device capable of preventing the tip portion from hitting an unexpected position on the body during swinging.

[0013]

According to the present invention, there is provided a swing training device for correcting a swing, comprising: a rigid shaft portion having a grip portion as a grip portion on a surface thereof; Extending from the tip,
A configuration having a pendulum portion having flexibility and restoring elasticity to a substantially linear state is adopted. Here, the grip portion and the shaft portion are separately formed, and the shaft portion is disposed only inside the grip portion. Also,
The present invention provides a swing training device for correcting a swing, which includes a grip portion serving as a grip portion, a shaft formed at least inside the grip portion, and flexibility and elasticity for restoring to a substantially linear state. And a pendulum formed to extend forward from the tip of the shaft.

Here, by forming the pendulum portion so as to have flexibility and elasticity for restoring to a substantially linear state, local bending near the joint between the shaft and the pendulum portion during swinging can be prevented. To prevent. In addition, by forming the pendulum in this way, it is possible to prevent the tip of the pendulum from colliding with the face or the like during swinging.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described.

FIG. 1 and FIG. 2 are views illustrating the external configuration of a swing training device 10 according to the present embodiment. The swing training device 10 of the present embodiment is a training device used for correcting a swing of a golf club, and includes, for example, a grip portion 11 that is a grip portion, a shaft (described later) formed at least inside the grip portion 11, flexibility, And a pendulum portion 12 having elasticity for restoring to a substantially linear state and extending from the tip of the shaft, and a head portion 13 fixed to the tip of the pendulum portion 12.

Here, for the grip portion 11, for example, a grip material made of synthetic rubber or the like, which is mounted on a normal golf club, is used. For the shaft, for example, a stainless steel having a certain mechanical strength is used. Is preferred. Note that steel, aluminum, stainless steel, carbon, or the like can be used. In addition, the pendulum portion 12 is made of a material having flexibility enough to bend along the body at the time of swing and elasticity that restores a substantially linear state, for example, a thermoplastic elastomer, a thermoplastic resin or rubber, or the like. The head portion 13 is made of, for example, urethane foam having a certain weight and elasticity. Further, it is desirable that the entire swing training device 10 be configured to have a length shorter than the actual driver length. Specifically, for example, the total length of the swing training device 10 is approximately 76 to 117 cm (30 to 117 cm).
46 inches), preferably about 88 to 112 cm (about 35 to 44 inches), and more preferably 96 to 11 cm.
It is desirable to configure it to be about 0 cm (about 38 to 43 inches). By configuring the overall length of the swing training device 10 to be shorter than the actual driver in this way, it is possible to reduce the possibility that the head portion 13 contacts the ground during a swing and the head portion 13 is damaged. .

Next, a specific example of the structure of the swing training device 10 will be described. FIG. 3 is a cross-sectional view illustrating the structure of the grip 11 side of the swing training device 10.

As shown in FIG. 3, the grip 11 side of the swing training device 10 has, for example, a grip 11, a pendulum 12, and a shaft 14.

The grip portion 11 is a grip portion formed of, for example, synthetic rubber or the like, and has a hollow shape such as a substantially cylindrical shape in which a grip end 11b located at one end thereof is closed. Here, it is desirable that the grip portion 11 be formed in a tapered shape in which the outer diameter of the distal end portion 11a is smaller than the outer diameter of the grip end 11b, and thus the outer shape of the grip portion 11 is formed in a tapered shape. Thereby, it is possible to prevent the grip portion 11 from slipping out of the hand when swinging the swing training device 10. The size of the grip portion 11 is, for example, such that the total length L1 in the longitudinal direction is about 26 cm,
It is desirable that the outer diameter r2 on the a side be about 10 to 30 mm and the outer diameter r3 on the grip end 11b side be about 20 to 40 mm.

As described above, the pendulum 12 is, for example,
It is formed of a material having flexibility enough to bend along the body during a swing and elasticity restoring to a substantially linear state. The shape of the pendulum part 12 is desirably a shape capable of retaining flexibility enough to bend along the body at the time of swing and elasticity for restoring to a substantially linear state. , Solid (shape without hollow part)
It is desirable to be formed in a column shape. In this manner, by forming the pendulum portion 12 in a solid pillar shape, it is possible to ensure sufficient elasticity with respect to the pendulum portion 12, and to prevent the pendulum portion 12 from being bent. It becomes possible to suppress. The pendulum 12
For example, the total length in the longitudinal direction is 60 to 1
It is desirable that the outer diameter r1 be about 10 cm and the outer diameter r1 be about 10 to 20 mm. It is needless to say that the pendulum portion 12 may have a hollow structure.

Here, as the pendulum, thermoplastic polyurethane elastomer, thermoplastic resin, rubber material (including natural rubber and synthetic rubber) and the like are suitable. Urethane-based elastomers are roughly classified into ester-based and ether-based.Ether-based elastomers are slightly more expensive, but have a lower risk of hydrolysis in consideration of products being used outdoors, and have a resistance to mold. It has the advantage of being large. Some ester type adipate type
(Easily hydrolyzed and inexpensive), caprolactone type (easily hydrolyzed and moderate), polycarbonate type (water resistant but expensive)
There is. Further, as the pendulum, a vinyl chloride elastomer, an olefin elastomer, an ionomer, a styrene elastomer, a polyester elastomer, a nylon elastomer, or the like can be used.

The shaft 14 is preferably made of, for example, stainless steel having a certain mechanical strength. Note that steel, aluminum, stainless steel, carbon, or the like can be used. Further, it may be a solid body, in which case a plastic material can be used. here,
The shaft 14 is formed, for example, in a cylindrical shape having a uniform outer diameter, and has a size such as, for example, a total length L2 in the longitudinal direction of about 20 cm, an inner diameter r1 of about 10 to 20 mm,
It is desirable to configure the outer diameter r4 to be about 11 to 22 mm. Also, as in the case of the grip portion 11, the shape of the shaft 14 is such that the outer diameter of the tip portion 11a is
It may be formed in a tapered shape smaller than the outer diameter on the 1b side. The grip and shaft are integrated, that is,
A grip as a grip may be formed on the shaft surface.

For the shaft, the hardness of the material is important, and a hardness of JIS A93 degrees is appropriate, and JIS A8
8 degrees-A98 degrees are preferable.

Since the pendulum portion 12 of the swing training device 10 is formed of a material having a specific gravity greater than that of an actual golf club shaft, the center of gravity of the swing training device 10 is larger than that of an actual golf club. It will be located on the grip part 11 side. By forming the shaft 14 from a lightweight material such as aluminum as described above, it is possible to reduce the weight of the grip portion 11 side, bring the center of gravity of the swing training tool 10 closer to the head portion 13 side, and practice swing training. The swing condition of the tool 10 can be made closer to a condition closer to an actual golf club.

As shown in FIG. 3, for example, the pendulum 12
Is inserted into one end of the shaft 14 and fixed there. The fixation here is
For example, when the swing training device 10 is swinged, the pendulum portion 12 is sufficiently strong so as not to come off from the shaft 14 by using an adhesive, an adhesive tape, a fixing screw, a fastener, or the like (not shown). The length L3 of the mounting portion 12a inserted into the shaft 14 is, for example, 3
cm is desirable.

The grip portion 11 includes, for example, the entire shaft 14 and the mounting portion 12 of the pendulum portion 12.
The shaft 14 and the pendulum 1
2, whereby the shaft 14 is disposed only inside the grip portion 11. In addition. The fixing here is performed by using, for example, an adhesive, an adhesive tape, a fixing screw, a fastener, or the like (not shown),
During the swing, the grip 11 is performed with sufficient strength so as not to come off from the shaft 14 or the like.

FIG. 4 shows the head 1 of the swing training device 10.
It is sectional drawing which illustrated the structure of the 3rd side. As shown in FIG. 4, the head unit 13 side of the swing training device 10 is, for example,
It has a pendulum part 12, a head part 13, and a hosel 15. The pendulum portion 12 is provided with, for example, recesses 12ba and 12bb in which the side surface of the pendulum portion 12 is depressed, in a fixing portion 12b which is a tip portion thereof.

The head portion 13 is desirably made of, for example, an elastic weight member, specifically, urethane foam having a weight of 50 to 150 g, hollow rubber, or the like. In this way, by configuring the head portion 13 itself with a resilient weight member, it is possible to ensure safety when the head portion 13 comes off the pendulum portion 12 or the like. The head portion 13 is preferably formed, for example, in a columnar shape. Specifically, as illustrated in FIG. 2, a part of a side surface of the cylinder (a portion arranged on the bottom surface at the time of addressing. It is desirable that the bottom portion 13a) is formed in a planar shape. Further, the head portion 13 may be formed in a columnar shape, a prismatic shape, or another pillar shape. As the size of the head portion 13, for example, when the head portion 13 is formed in a column shape, the total length L4 in the longitudinal direction is 5 to 2
It is preferable that the diameter r5 be about 0 cm and the diameter r5 be about 5 to 10 cm. In addition, the pendulum 12
A hole into which the fixing portion 12b is inserted is formed. When the head portion 13 is fixed to the pendulum portion 12, the fixing portion 12b of the pendulum portion 12 inserted into this hole is fixed with an adhesive or the like.

For the head part, an ether foam polyurethane is suitable, and the hardness is ASKER hardness tester type C 5 degrees to 80 degrees.
The range of the degree is suitable, desirably ASKER hardness tester type C 2
The range is 5 to 40 degrees. In addition, a foam or foam rubber of polyethylene vinyl acetate (EVA) resin can also be used.

The hosel 15 is a fixing reinforcing member for reinforcing the fixing between the pendulum 12 and the head 13.
The inside of the substantially truncated cone has a shape that is punched into a column shape perpendicular to the bottom surface.

As shown in FIG. 4, a head portion 13 is fixed to a fixing portion 12b which is a tip portion of the pendulum portion 12. Here, for example, the fixing portion 12b of the pendulum portion 12 is inserted into the hole of the head portion 13 described above.
The fixing is performed by using an adhesive, an adhesive tape, a fixing screw, a fastener, or the like (not shown).
Here, the fixation is performed by fixing the head portion 1 formed in a pillar shape.
3 is substantially perpendicular to the pendulum part 12 and
It is desirable that the fixing is performed so as to be symmetrical with respect to the fixing portion 12b. Further, by providing the recesses 12ba and 12bb in the fixing portion 12b of the pendulum portion 12 as described above, the fixing between the pendulum portion 12 and the head portion 13 can be further strengthened. It is possible to prevent the head portion 13 from coming off from the pendulum portion 12 during the swinging operation.

As shown in FIG. 4, for example, a pendulum portion 12 is inserted into a portion formed by punching the inside of the hosel 15 into a cylindrical shape, and a head portion is further provided on the bottom surface of the hosel 15. Thirteen side surfaces are arranged. In this state, the pendulum 12, head 13 and hosel 15 are fixed to each other by an adhesive or the like, whereby the adhesion between the pendulum 12 and the head 13 is reinforced.

Next, the swing training device 1 having such a configuration will be described.
How to use 0 and its effect will be described.

FIG. 5 is a front view exemplifying a state in which the swing training device 10 is held and addressed. When using the swing training device 10, first, the user 20, for example, grips the grip portion 11 of the swing training device 10 in the same manner as a normal golf club, takes a stance, etc. in the same manner as in a normal swing, and backswings as it is. I do.

FIG. 6 is a front view exemplifying a correct top state of the backswing. Hands 21 and 22 at the top
Although the height of the grip and the angle of the grip portion 11 are slightly different for each person, when the correct takeback is made, the hands 21, 2
2 rises between the face and the right shoulder 23, and the grip portion 11 becomes substantially horizontal with the ground. At this time, the pendulum portion 12 of the swing training device 10 bends due to its flexibility, and its tip side hits the vicinity of the left shoulder 24 or the left armpit 25. If the correct top is confirmed in this way, the user 20
Starts a downswing and brings it all the way to the finish.

FIG. 7 is a front view exemplifying a correct finish state. In the correct finish, hand 21,
Since 22 rises between the face and the left shoulder 24, the pendulum portion 12 of the swing training device 10 bends due to its flexibility, and the distal end side thereof is at the time of takeback about the rotation axis of the body. Symmetrical position, ie right shoulder 23 or right armpit 27
Hit near. In the correct finish, the left elbow 2
8 is folded and the power of the right arm is released, so that the tip of the grip 11 hits the vicinity of the base 29 of the neck. By feeling these things with the body, the user 20 can confirm that the correct finish has been achieved.

By the way, in order to achieve a correct finish, the swing trajectory in the downswing must be correct. When the swing trajectory is not correct, the finish as shown in FIG. 7 cannot be obtained, and the distal end side of the pendulum 12 does not hit the appropriate position as described above. This allows the user 20 to know that there is a problem with the swing trajectory. However, the swing training device 10 has a flexibility and an elasticity for restoring to a substantially linear state.
2, the pendulum 12 is bent more than necessary at the time of finishing, and the head 13 fixed to the tip of the pendulum 12 does not hit an unexpected position (for example, face) of the body. Absent.

The swing training device 10 has flexibility,
In addition, the pendulum portion 12 is configured to have elasticity for restoring to a substantially linear state. Therefore, the shaft 1
Local bending around the joint between the pendulum part 4 and the pendulum part 12 can be suppressed, and it becomes possible to correct the swing of the actual golf club under optimal conditions.

Further, the head portion 13 is formed in a column shape,
By practicing takeback and downswing while visually checking that the longitudinal direction of the head portion 13 moves parallel to the swing surface, the club head surface is ideally moved perpendicular to the swing surface. It is possible to acquire a proper swing. Then, the same operation can be performed regardless of whether the user performs left or right hitting.

In the case where the pendulum portion 12 is made of a lightweight and moderately air-resistant material such as urethane resin, if the swing training device 10 can be swung at a fast body turn, the pendulum portion is slightly delayed after the finish. The tip side of 12 will hit the right shoulder 23 or the right armpit 27 vicinity. That is, if practice is performed so that the timing at which the pendulum unit 12 hits the vicinity of the right shoulder 23 or the right armpit 27 is delayed as much as possible,
Naturally, body turns are faster, and head speed can be increased. When several subjects used the swing training device 10 of the present embodiment, even a weak woman could increase the flight distance by 20 to 30 yards with a small amount of training.

As described above, in the present embodiment, the pendulum portion 12
Is configured to have flexibility and elasticity for restoring to a substantially linear state, so that the vicinity of the joint between the shaft 14 and the pendulum 12 can be suppressed from being locally bent, and The swing of the golf club can be corrected under optimal conditions.

Further, since the pendulum portion 12 is configured to have flexibility and elasticity for restoring a substantially linear state, the pendulum portion 12 bends more than necessary at the time of finishing, and Can be prevented from colliding with the face of the head 13 fixed to the face.

The present invention is not limited to the above embodiment. For example, in the present embodiment, the grip portion 11 and the pendulum portion 12 are formed as separate members, and are fixed to each other with an adhesive or the like. However, both may be formed of the same member and may be formed as an integrated structure.

Further, in the present embodiment, the grip portion 11 and the shaft 14 are formed as separate members, but they may be integrally formed of a hard member such as plastic.

Further, although a solid member is used for the pendulum portion 12, a hollow member may be used for the pendulum portion 12.

In the present embodiment, the head 13 is attached to the tip of the pendulum 12, but it is not necessary to attach the head 13 if a sufficient swing feeling can be obtained.

Further, in the present embodiment, the head portion 13 is made of an elastic weight member such as urethane foam, but a weight of metal or the like may be embedded in the head portion 13. In this case, it is desirable to cover the outside of the head portion 13 with a resilient material such as sponge, urethane foam, or the like in order to ensure safety.

In this embodiment, the example in which the head portion 13 is formed in a column shape is shown. However, the head portion 13 may be formed in another shape such as a shape resembling an actual golf club head. . For example, a character form or a canned form is also possible.

Further, in this embodiment, an example is shown in which the head portion 13 formed in a pillar shape is fixed to the tip of the flexible pendulum portion 12, but the flexibility is low, for example, in actual golf. A configuration in which a head portion formed in a column shape is fixed to the tip of the club shaft may be adopted.

Further, in the present embodiment, the depressions 12ba, 12bb are provided in the fixing portion 12b of the pendulum portion 12, but the fixing portion 12b may not be provided with the depressions 12ba, 12bb.

Further, in the present embodiment, the pendulum portion 12 and the head portion 13 are formed as separate members, but they may be integrally formed. In addition, the surface of the head portion 13 thus formed may be formed of urethane. It is good also as a structure covered with elastic materials, such as.

In the present embodiment, the length of the entire swing training device 10 is, for example, about the same as a 5-iron.
It may be shorter or longer.

Next, a second embodiment of the present invention will be described. This embodiment is a modification of the first embodiment, and differs from the first embodiment only in that the shaft is configured to extend from the tip of the grip portion by a predetermined length. In the following, description will be made focusing on differences from the first embodiment, and description of items common to the first embodiment will be omitted.

FIG. 8 shows a swing training device 3 according to the present embodiment.
FIG. 4 is a cross-sectional view illustrating a structure of a grip portion 31 of a No. 0 side;

As shown in FIG. 8, the grip portion 31 side of the swing training device 30 according to the present embodiment has, for example, a grip portion 31, a pendulum portion 32, and a shaft 34, similarly to the first embodiment. I have. However, in the swing training device 30 of the present embodiment, the shaft 34 is formed so as to extend by a predetermined length from the distal end portion 31 a of the grip portion 31, and a part of the shaft 34 is outside the grip portion 31. Are located. The shaft 3 formed so as to extend by a predetermined length from the distal end portion 31a of the grip portion 31
The length L5 (the length of the portion of the shaft 34 disposed outside the grip portion 31) is, for example, 0 to 30 cm.
A degree is desirable.

As described above, even when a part of the shaft 34 is disposed outside the grip portion 31, the same effect as in the first embodiment can be obtained. Note that the present invention is not limited to the above embodiment.

Next, a third embodiment of the present invention will be described. This embodiment is an application example of the first embodiment, and is an application example in which the present invention is applied to a training tool used for correcting a swing of a bat used for baseball.

FIG. 9 shows a swing training device 4 according to the present embodiment.
FIG. 2 is a diagram illustrating an example of an external configuration of FIG. The swing training tool 40 of the present embodiment is a training tool used for correcting a swing of a bat used for baseball, and includes, for example, a grip portion 41 as a grip portion, a shaft described later formed at least inside the grip portion 41, and a flexible member. It has a pendulum part 42 that has a characteristic and elasticity that restores to a substantially linear state, and is formed so as to extend from the tip of the shaft.

Here, for the grip portion 41, for example, a grip material made of synthetic rubber or the like, which is attached to a normal metal bat, is used, and the shaft has, for example, a certain degree of mechanical strength. Further, light and light aluminum, stainless steel, carbon and the like are used. The pendulum portion 42 is made of a material having flexibility and elasticity for restoring a substantially linear state, such as urethane resin.
Further, it is desirable that the total length of the swing training device 40 is formed to be approximately the same as the actual bat, specifically, approximately 850 mm. The weight of the entire swing training device 40 is desirably formed to be substantially the same as the actual bat, and specifically, desirably formed to be approximately 900 g.

Next, a specific example of the structure of the swing training device 40 will be described. FIG. 10 is a cross-sectional view illustrating the structure of the swing training tool 40 on the grip portion 41 side.

As shown in FIG.
The grip portion 41 has, for example, a grip portion 41, a pendulum portion 42, a shaft 44, and a mounting pin 43. The grip portion 41 is, for example, a grip portion formed of synthetic rubber or the like, and has a hollow shape such as a substantially cylindrical shape. Here, the grip portion 41 may be formed in a tapered shape in which the outer diameter on the tip end portion 44b side is smaller than the outer diameter on the grip end 44a side.

As described above, the pendulum 42 is, for example,
A material having flexibility and elasticity that restores to a substantially linear state,
For example, it is formed of a synthetic resin member such as urethane resin. The shape of the pendulum part 42 is desirably a shape that can maintain flexibility and elasticity for restoring to a substantially straight line state. Specifically, for example, the pendulum part 42 is formed in a solid column shape such as a substantially cylindrical column. It is desirable. Thus, the pendulum part 4
2 is formed into a solid pillar shape, so that the pendulum portion 4 is formed.
2, it is possible to ensure sufficient elasticity, and it is possible to prevent the pendulum part 42 from being bent. As the size of the pendulum part 42, for example, the total length in the longitudinal direction is about 65 cm,
It is desirable that the outer diameter r8 of the attachment portion 42a, which is one end inserted into the shaft 44, be about 21 mm.

The shaft 44 is, for example, a substantially hollow body made of aluminum, stainless steel, carbon, or the like, which has a certain degree of mechanical strength and is lightweight. As shown in FIG. 10, for example, the grip end portion 44a of the shaft 44 is closed, and the outer diameter of the grip end portion 44a is configured to be larger than the outer diameters of other portions. . By forming the grip end portion 44a in this way, it is possible to prevent the grip portion 41 from slipping out of the hand during swinging of the swing training device 40. The portion other than the grip end portion 44a of the shaft 44 is formed, for example, in a cylindrical shape having a uniform outer diameter. As a specific size of the shaft 44, for example,
The outer diameter r6 of the grip end 44a is about 50 mm, the outer diameter r5 of the part other than the grip end 44a is about 25 mm, and the inner diameter r7 of the part other than the grip end 44a is about 21 mm.
Is desirably configured to have a total length L6 of about 300 mm. Also, a grip end portion 44 of the shaft 44
The shape of the portion other than a may be formed in a tapered shape in which the outer diameter on the grip end portion 44a side is larger than the outer diameter on the distal end portion 44b side.

As shown in FIG. 10, for example,
One end (attachment portion 42a) of the shaft 2 is inserted into one end of the shaft 44 and fixed there. For example, as shown in FIG. 10, the fixing is performed with sufficient strength so that the pendulum 42 does not come off the shaft 44 when the swing training tool 40 swings as shown in FIG. 10. The length L7 of the mounting portion 42a inserted into the shaft 44 is preferably, for example, about 100 mm.

The grip portion 41 is fixed to the shaft 44 so as to cover, for example, portions other than the grip end portion 44a of the shaft 44. In addition. The fixation here is
For example, when the swing training device 40 is swinged, the grip portion 41 is sufficiently strong so as not to come off from the shaft 44 by using an adhesive, an adhesive tape, a fixing screw, a fastener, or the like (not shown).

FIG. 11 shows the tip 4 of the swing training device 40.
It is sectional drawing which illustrated the structure of 2b side. The distal end portion 42b of the swing training device 40 has, for example, a substantially cylindrical shape whose outer diameter is larger than the mounting portion 42a shown in FIG. 10, and specifically, the outer diameter r9 of the distal end portion 42b is, for example, ,
It is desirable to form it to be about 65 mm.
Next, a description will be given of a method of using the swing training device 40 having such a configuration and the effects thereof.

FIG. 12 is a diagram exemplifying a state in which a swing is started with the swing training tool 40 held. When using the swing practice tool 40, the user 50 grasps the grip portion 41 of the swing practice tool 40 like a normal bat used for baseball, and performs a swing like a normal bat swing. The swing here is performed, for example, by a body turn around the axis of the body. Specifically, for example, first, the user 50 steps on the left foot 51 forward (pitcher side), and rotates the waist 52 in the swing direction (from the catcher side to the pitcher side). Next, the user 50 rotates the arm 5 while rotating the shoulder 53 in the swing direction.
4, 55 are swung in the swing direction. As a result, the swing training device 40 is provided with a grip end portion 44a and a tip portion 42b.
In the swing direction about the axis of the body of the user 50.

The rotation of the waist 52, the shoulder 53, the arms 54, 55 and the like described above is started before the rotation of the swing training device 40. Then, a force for rotating the swing training device 40 is applied to the grip portion 41 via the arms 54 and 55 of the user 50. Therefore, as shown in FIG. 12, the distal end portion 42b of the swing training device 40 bends in the direction opposite to the rotation direction of the swing training device 40 due to its flexibility.

FIG. 13 is a diagram illustrating the moment of impact in a swing. In the actual bat swing,
Ideally, the impact should occur at the moment when the moving speed of the tip of the bat becomes maximum, and by moving the moment of impact to such a point, hit the ball at the point where the head speed is fastest and the power can be exhibited It becomes possible.

In the case of a swing with the swing training tool 40, the pendulum part 42 is given an acceleration by moving following the rotational movement of the grip part 41. Accordingly, in the rotational movement of the swing training tool 40 about the center of the body of the user 50, the pendulum 42 reaches the maximum speed at the moment when the pendulum 42 passes the grip 41. At that moment, the pendulum portion 42 of the swing training device 40 is restored to a substantially linear shape as shown in FIG. 13 by the elastic force. The timing at which the pendulum portion 42 is restored to a substantially linear shape is an ideal moment of impact, and the user 50
It is possible to acquire an ideal bat swing by repeating the swing while confirming that the swing practice tool 40 restores to a substantially linear shape.

FIG. 14 is a diagram exemplifying a follow state in a swing. In the follow-up, for example, the body rotates so as to be pulled by the swing exercise tool 40. Specifically, for example, first, the swing training tool 40 rotates in the swing direction in the order of the distal end portion 42b and the grip end portion 44a, and further, the arms 54, 55 and the shoulder 53 are pulled by the rotation. The body rotates in the swing direction in the order of the waist 52.

As described above, in the present embodiment, the swing training device 40 is provided with the grip portion 41 as the grip portion, the shaft 44 formed at least inside the grip portion 41, and the elasticity for restoring the flexibility and the substantially linear state. And the shaft 4
Pendulum part 42 formed so as to extend from the tip of the pendulum 4
By swinging using the swing training device 40, it is possible to confirm the moment of an ideal with a feeling that the pendulum portion 42 is restored to a substantially linear shape, and it is possible to easily determine the optimal moment. It becomes possible to wear a bat swing.

The present invention is not limited to the above embodiment. For example, in the present embodiment, the grip portion 41 and the pendulum portion 42 are separate members, and the mounting pin 43
Although they are fixed to each other by the same method, they may be formed by the same member to form an integral structure.

In this embodiment, the grip portion 41 is fixed to the surface of the shaft 44.
1, the shaft 44 itself may be used as the grip portion.

Further, in the present embodiment, a solid member is used for the pendulum portion 42, but a hollow member may be used for the pendulum portion 42.

In this embodiment, the head is not provided at the tip of the pendulum 42. However, the head and the weight may be provided at the tip of the pendulum 42.

Further, the grip portion 41 and the shaft 44 may be formed by using a commercially available metal bat obtained by cutting the grip portion as it is.

[0079]

As described above, according to the present invention, since the pendulum portion is configured to have flexibility and elasticity for restoring a substantially linear state, the vicinity of the joint between the shaft and the pendulum portion is reduced. Local bending can be suppressed, and a swing correction for an actual golf club can be performed under optimal conditions.

Further, since the pendulum portion is configured to have flexibility and elasticity for restoring to a substantially linear state, the pendulum portion flexes more than necessary at the time of finishing, and the tip portion of the pendulum portion is It is possible to prevent an unexpected position from being hit.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an external configuration of a swing training device according to the present invention.

FIG. 2 is a diagram illustrating an external configuration of a swing training device according to the present invention.

FIG. 3 is a cross-sectional view illustrating the structure of the grip on the side of the swing training device according to the present invention;

FIG. 4 is a cross-sectional view illustrating the structure of the head of the swing training device according to the present invention;

FIG. 5 is a front view exemplifying a state in which a swing training device according to the present invention is addressed while holding it.

FIG. 6 is a front view exemplifying a correct top state of the backswing.

FIG. 7 is a front view illustrating a correct finish state;

FIG. 8 is a cross-sectional view illustrating the structure of the grip on the swing training device according to the present invention;

FIG. 9 is a diagram illustrating an external configuration of a swing training device according to the present invention.

FIG. 10 is a cross-sectional view illustrating the structure of the grip portion side of the swing training device according to the present invention.

FIG. 11 is a cross-sectional view illustrating the structure of the distal end portion of the swing training device according to the present invention.

FIG. 12 is a diagram exemplifying a state in which a swing is started with the swing training tool according to the present invention.

FIG. 13 is a diagram exemplifying an instant of an impact in a swing.

FIG. 14 is a diagram illustrating a follow state in a swing.

[Explanation of symbols]

 10, 30, 40 Swing practice tool 11, 31, 41 Grip part 12, 32, 42 Pendulum part 13 Head part 14, 34, 44 Shaft

Claims (14)

[Claims] 1. A swing training device for correcting a swing, comprising: a rigid shaft portion having a grip portion as a grip portion on a surface thereof; A swing training tool comprising: a pendulum part having; 2. The swing training device according to claim 1, wherein the grip portion and the shaft portion are formed separately, and the shaft portion is disposed only inside the grip portion. 3. A swing training device for correcting a swing, comprising: a grip portion serving as a grip portion; a shaft formed at least inside the grip portion; and flexibility and elasticity for restoring a substantially linear state. And a pendulum part formed to extend forward from the tip of the shaft. 4. The apparatus according to claim 1, wherein the pendulum has a degree of flexibility that bends along a body during a swing.
4. The swing training device according to any one of items 1 to 3. 5. The swing training device according to claim 1, wherein the pendulum has a column shape. 6. The swing training device according to claim 1, wherein the pendulum portion is formed solid. 7. The pendulum part is made of a thermoplastic elastomer,
The swing training device according to any one of claims 1 to 6, wherein the swing training device is formed of a thermoplastic resin or rubber. 8. The swing training device according to claim 1, wherein a head portion is fixed to a tip of the pendulum portion. 9. The swing training device according to claim 8, wherein the head portion is an elastic weight member. 10. The head portion has a columnar shape, and the longitudinal direction of the head portion is fixed to the tip of the pendulum portion substantially vertically to the pendulum portion and symmetrically to the fixing portion. The swing training device according to claim 8, wherein the training device is used. 11. The swing training device according to claim 8, wherein the head portion is formed of urethane foam. 12. The swing training device according to claim 1, wherein the total length is about 76 to 117 cm. 13. The swing training device according to claim 1, wherein the swing training device is used for correcting a swing of a golf club. 14. The swing training device according to claim 1, which is for correcting a swing of a bat used for baseball.