JPH0528155B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a golf practice tool suitable for practicing golf swings.

[Conventional technology]

Traditionally, this type of golf practice equipment has ranged from so-called open-air driving ranges, to home garden practice equipment, and even indoor practice equipment.
Various forms are commercially available. In addition, these practice tools are generally designed to allow players to practice by hitting an actual golf ball, a pseudo ball fixed to a rotating tee, a pseudo ball with a string connected to a pin, etc. with a club.

[Problem to be solved by the invention]

However, none of the conventional golf practice tools mentioned above are designed to help players learn or feel the correct swing form based on consistent golf swing theory, and are simply used for repeated practice of shots and swings. It is only used in Therefore, regardless of when an excellent coach or the like accompanies and instructs, when amateurs practice alone, they repeat their own unreasonable or incorrect forms and acquire them as bad habits, which leads to them being unable to fly. Not only does the distance not increase, but due to the peculiarities of the form, the ball turns into a sliced ball or a hooked ball, and the trajectory is unstable, making it difficult to improve, or even if you do improve a little, you can't improve quickly. There were problems such as the system stopping.

This invention was made in view of the above-mentioned circumstances, and its purpose is to apply a certain theory regarding the swing mechanism that the inventor has derived and established based on observation and analytical research of the swing forms of first-rate professional golfers, etc. It is an object of the present invention to provide a golf practice tool suitable for swing practice based on the theory of "pendulum whip motion" described later, and effective for improving golf skills regardless of age or sex.

[Means to solve the problem]

In order to achieve the above object, the golf practice tool of the present invention includes a base plate that is installed on the floor as a foothold for a golf practitioner, and a base plate that is placed in front of the practitioner who takes a swing posture and is connected to the base plate. A grip carry comprising a swing trajectory guide member provided at a fixed position and a grip member, and guided along the trajectory of the swing trajectory guide member when a practitioner grasps the grip member and performs a swing movement. a grip assembly; a braking means provided in the grip carriage assembly for braking the slide member when the practitioner's swing is not in a hand-first state; A top position indicating member is provided and allows the practitioner to sense that the movement has reached the top position at the moment the practitioner's knee makes contact during the take-back movement, and a measuring part of the knee in the practitioner's swing form. The structure includes an impact position support member which is provided nearby and allows the practitioner to sense that the movement has come to the impact position by contact with the knee at the moment of contact with the knee during a forward swing movement.

[Effect]

The golf practice tool of the present invention having the above configuration implements the theory of "pendulum whip motion" regarding the swing mechanism, which the present inventor derived based on observation and analytical research of the swing forms of top professional golfers, etc. The idea is to improve your golf skills by using this method for swing practice. First, I will briefly explain this theory.
Furthermore, professional golfers and amateur golfers unconsciously perform this "pendulum whip motion" when swinging.

In the following explanation, many golf players are right-handed, so the explanation will be made with right-handed players in mind, but if you are left-handed, you can read "right" and "left" in the following explanations interchangeably. .

A series of movements in a golf swing, from address movement to tailback movement, top, down (forward) swing movement, impact, and follow-through, is usually compared to a pendulum movement.
Of course, sufficient head speed cannot be obtained just by rotating the head by its own weight, so force is applied to increase the speed of the head through movements of the hands, shoulders, hips, etc. At that time, for example, emphasis is placed on ``hitting with the right hand'' from the top toward impact, but this requires unnecessary force and is not effective, as illustrated and explained below.

Prepare a piece of string and tie a weight, such as a 5-yen coin, to one end of it. Hold the other end of the string with your left hand and let it hang, then grab the weight with your right hand and move it to the right until the string becomes taut, then force the weight with your right hand to speed up the pendulum, as shown in Figure 5a. Throw all the way to the left (swing direction). This corresponds to the action of hitting with the right hand during the downswing; the more force is applied, the more the string becomes slack, and as can be seen from the fact that it does not result in a pendulum motion, it is clear that the power of the right hand is being wasted. It is. On the other hand, as shown in Figures 5b and c, if you grab the weight with your right hand and tension the string, then pull the string with your left hand, and when the weight comes to the front of your left shoulder (i.e., the impact zone), this pull will occur. By pulling the weight backward and upward with the left shoulder, which is the base of the left hand used for the exercise, the weight will be accelerated until it reaches the impact zone without causing any slack in the string, and from there, the whipping motion of the string will be transferred by pulling up the left shoulder. Then, the string is kept taut and rotated, further accelerating the speed (Fig. 5d).

This pendulum whip motion is, in principle, the same in a golf swing using an actual club; during the downswing, by pulling with the left hand rather than hitting with the right hand, the pendulum motion is faster and smoother, and the left shoulder is further pulled up. As a result, the shaft (corresponding to a string) becomes like a whip, and the head (corresponding to a weight) is accelerated. In other words, in pendulum whip motion, the initial velocity is given from the top to the head (weight) by the pulling motion during the downswing, and the speed continues to increase until it reaches the impact zone, and even after impact, the whipping motion of the shaft due to the pulling motion gives the initial velocity from the top to the head (weight). The head can be accelerated smoothly without any problems. For example, when driving a nail with a hammer, rather than applying force to the handle and hitting the nail with the head of the hammer, you pull the handle downward and use the weight of the head of the hammer to control the falling speed. This is also supported by the fact that accelerating by pulling allows the nail to be driven deeper and more easily. This is because humans need far less power to pull something than to hit it.

However, in an actual wing using a club, it is impossible to obtain sufficient head speed to hit the ball far by simply pulling the end of the string with your left hand, as shown in Figure 5. Can not. This is because the head is much heavier than the weight in the experiment above, and the shaft is much more rigid than the string. Furthermore, it goes without saying that the pendulum motion and the whip motion are not mutually independent motions, but must be smoothly integrated into a series of motions. Therefore, when swinging with a club that uses a pendulum whip motion, in order to be able to smoothly perform the pendulum motion from the top and the whip motion from the impact zone, and to obtain sufficient head speed to swing powerfully. Create a twist for the post-impact whip movement during the take-back movement from address to top. This twist accelerates the lifting motion of the left shoulder in the experiment using the string and weight described above.

To explain this diagrammatically, first, from the address position A shown in FIG. 6A, the left arm 62 holding the club 61 and the right arm attached thereto are relaxed and rotated approximately 45° to 60° to the right using the left shoulder 60 as a reference point. At this time, only move your arms; do not move your shoulders, hips, or lower body. This angle is effective in ensuring a consistent hand-first state or left hand pull action in forward swings from the top, and also allows for effortless and smooth whipping in the follow-through following the impact zone. It acts to move the shaft and flex the shaft.

Next, the take back for this whip movement (Fig. 6b)
arrow), then move the left shoulder 60 as shown by the arrow.
Rotate to the right until it stops naturally, without changing the relationship between your shoulders and hands obtained through the above take-back. At this time, the left side of the body, such as the left hip 63, is kept soft and allowed to follow the movement of the left shoulder 60. The top position is the position where the club stops naturally without twisting during the take-back motion, and from this position, as shown in FIG. Pull it down to the impact zone shown in Figure d.

In this impact zone, due to the clockwise rotation of the left shoulder 60 in Figure 6b and the subsequent rotation of the hips during the downswing in Figure 6c, a fly ball line F parallel to both shoulders and a line W connecting both hips are created. A torsion angle is formed between them, and in this state, catch the ball and push with the right hip 64 while applying the pull or hand first action created by the angle created by the take back for the whip motion in Figure 6a above. If you keep adding , left shoulder 6
0 is pushed upward and rearward at once due to the above-mentioned torsion angle, and the club 61 also returns to the rear and upward direction.
This is the follow-through motion due to the whip motion (arrow in Fig. 6f).

In this pendulum whip motion swing, it is sufficient to stop the top at a position where the take-back motion naturally receives resistance depending on the stiffness of each person's body, and there is no need to take a large swing, so the ball remains in the addressed face state. It is easier to make an accurate impact, and since it uses the twist between the hips and shoulders with a focus on the pulling motion, it is easier to hit people with stiff bodies or weaker strength compared to swings that use unnecessary force such as hitting with the right hand. But he can hit the ball accurately and far.

In the golf practice tool of the present invention, the practitioner sets a swing stance on the base plate, holds the blip member of the grip carrier assembly, and practices the swing using the pendulum whip motion as described above while being guided by the trajectory guide member. At this time, if the practitioner's swing is not a hand-first swing based on the pull of the left hand, the movement of the grip carriage assembly will be braked by its braking member, and the practitioner will be required to You can practice while correcting your swing so that it moves smoothly along the track guide member.

Further, the top position indicating member comes into contact with the inside of the knee part 65 of the left leg of the practitioner at the top position of the swing when, for example, the knee part 65 of the left leg slowly moves inward as a result of the take-back motion as shown in FIG. 6b. This allows the practitioner to sense that the movement has reached the top position. Therefore, by repeatedly practicing the take-back motion, the practitioner can repeatedly check at which top position the left knee contacts the top position indicating member, and thereby determine his or her optimal top position and down position. The timing of swing transition can be sensed, and even in an actual swing, the user can always swing based on the optimum top position and timing.

The impact position indicating member is located at the right hip 64 in the downswing movement (Fig. 6c) following the top position.
When the knee part 66 of the right leg of the practitioner moves inward as the practitioner applies a push, the knee part 66 of the right leg contacts the inside of the impact zone as shown in FIG. 6d, indicating that the movement has reached the impact zone. Let the practitioner feel it. As a result, the moment the practitioner senses that the swing has reached the impact zone during the downswing movement from his or her optimal top position established as above, the practitioner pulls his left shoulder upward and backwards and follows through with the whip motion. By repeating the practice of transitioning to the movement, the timing and form of the follow-through movement can be sensed, and the timing and form thus sensed can be stably reproduced in the actual swing.

It should be noted that the take-back movement (in Figure 6b), downswing movement (in Figure 6c), and follow-through movement (in Figure 6f) of the swing due to the above-mentioned pendulum whip motion are not independent; It must be done smoothly as a series of movements. In particular, it is preferable to perform the top not in a stationary state, but by using the reaction from the takeback to apply a pull with the left hand and transition to the downswing. It can also be used effectively to master timing.

〔Example〕

Embodiments of the golf practice tool of the present invention will be described below with reference to FIGS. 1 to 4.

Reference numeral 1 in the figure is a base plate on which the golf practitioner T (Fig. 3) rests as a foothold for swinging.
A column mount 2 is fixed to the front central portion of the base plate 1. The lower ends of two mutually parallel supports, namely a top pole 3 and an impact pole 4, are attached to the support mount 2. top pole 3
and impact pole 4 at the rear (on the side of practitioner T)
It is installed at an angle. This angle of inclination may be adjustable. Near the upper ends of the top pole 3 and the impact pole 4, a common fixing device 9 having a tightening screw 8 connects the top position knee pad 6 as a top position indicating member and the impact position knee pad as an impact position indicating member, respectively. 7 is installed in a height-adjustable manner.
The lower ends of these poles 3 and 4 are fitted with spring joints 1 to provide cushioning properties to the knee pads 6 and 7, respectively.
They are connected by 0,11.

On the other hand, on the front side of the column mounting base 2, two guide member columns 5 ₁ and 5 ₂ are arranged parallel to each other and with a larger interval than the two poles 3 and 4 mentioned above, and are tilted forward. is fixed. The inclination angles of these struts 5 ₁ and 5 ₂ can also be made adjustable. Reference numeral 15 denotes a reinforcing rib stretched between the intermediate portions of the two pillars 5 ₁ and 5 ₂ . These pillars 5
A track guide member 14 is attached to the vicinity of the upper end portions of the members ₁ and 5 ₂ by means of fixtures 12 and 13 so that its height can be adjusted. The trajectory guide member 14 has an arcuate shape that approximates the trajectory of movement near the grip during swing, and has both ends facing diagonally rearward and upward.
It is fixed _{at 1,52 .}

As shown in FIGS. 4a and 4b, the track guide member 14 has a guide groove 16 formed over its entire length that is open on the inner edge side, and the inner edge side is indicated by reference numeral 17 in FIG. 4b. The cross section is narrower over a predetermined width than the center. The width of the guide groove 16 does not need to be the same over its entire length; for example, the width may be gradually increased from the center located in front of the practitioner T toward both ends. The grip carriage assembly 18 guided by the track guide member 14 includes a slide member 19 slidable in the guide groove 16 along this slide member 19 .
The grip member 22 includes a lever member 21 pivotally attached to the lever member 21 by a pin 20, and a grip member 22 having a shaft 23 attached to the outer end of the lever member 21 (inside the track guide member 14).

The slide member 19 has an inner edge portion and an outer edge portion formed with approximately the same curvature as the guide groove 16;
The overall shape has a rectangular shape with a width slightly smaller than that of the guide groove 16, and the center portion in the length direction is tapered inwardly and outwardly from approximately the center portion in the width direction (radial direction of the track guide member 14). Through hole 2 shaped like
4 is formed. The lever member 21 is pivotally connected to the slide member 19 by a pin 20 while being inserted through the through hole 24, and the grip carriage assembly 18 is attached to a portion of the lever 21 slightly inside the pin 20 (on the practitioner T side). The slide member 19 is attached to the starting guide member 14 by fitting the slide member 19 into the guide groove 16 from one end so that the slide member 19 is located in the aperture opening 17 of the guide groove 16.

The free end (outer end) of the lever member 21 from the pin 20
Length to E (i.e. turning radius of lever member 21)
is slightly longer than the distance from the pin 20 to the outer circumferential wall of the guide groove 16, so that the practitioner T
When you swing in the direction of the arrow in Figure 4 while holding the grip, if your swing is not a pull-based swing, that is, a hand-first swing, but is a swing in which you press the grip with your right hand, you will see the dot-dashed line in Figure 4. As shown, the free end E of the lever member 21 comes into contact with the outer circumferential wall of the guide groove 16, and the swing is braked. That is, the lever member 21 also has the function of a braking member that brakes the slide member 19 unless the swing is in the hand first state. Further, as shown in FIG. 7, the slide member 19 is formed to be tapered from the center where the lever member 21 is attached to both ends and to be long as a whole, and the guide groove 16 also corresponds to the impact zone. By forming both sides wider than the center, the grip carriage assembly 18 can be moved smoothly and the slide member 1 can be moved more easily.
9 becomes difficult to separate from both ends of the guide groove 16.

In addition, in the illustrated embodiment, four spring-loaded belts (tensile elastic means) 25 ₁ , 25 ₂ whose lower ends are respectively latched to the four corners of the base plate 1 are used for the purpose of strengthening the lower body of the practitioner T. , 25 ₃ , 25 ₄ are provided, and by locking the upper ends of these belts to the waist belt B of the practitioner T, it is possible to apply a downward load to the lower body of the practitioner T. .

To explain an example of how the golf practice equipment of this embodiment is used, the practitioner T first uses the knee pads 6 for indicating the top position and the knee pads 7 for indicating the impact position.
The position of the track guide member 14 is adjusted and set as appropriate, and the four spring belts 25 ₁ , 25 ₂ , 25 ₃ ,
25 Hang ₄ on waist belt B and take a stance for swinging on base plate 1. Then, holding the grip member 22, from the address shown in FIGS. 6a and 6b,
Perform the take-back motion using the pendulum whip motion explained in . At this time, the moment the inside of the left knee 65 comes into contact with the knee pad 6 for indicating the top position, the user is made to realize that position as his own top position.

Also, in the case of a forward swing from the top position (Fig. 6c to f), the slide member 19 of the grip carriage assembly 18 is moved around the guide groove 16 of the track guide member 14, centering on the pull of the left hand.
In addition to practicing so that you can slide it smoothly along the axis, the moment when the inside of the right knee 66 comes into contact with the impact position indicating pad 7 is the impact position or impact zone where the whip motion is followed through by pulling up the left shoulder. (Figure 6 d). Of course, the transition from the take-back at the top to the downswing and the transition to the follow-through motion in the impact zone should be practiced so that the entire swing is performed smoothly as a rhythmic series of motions.

The grip carriage assembly of the above embodiment uses a slide member that slides within the guide groove, but it is also possible to incorporate a ball bearing, roller bearing, etc. into the slide member or the guide groove as appropriate. . In addition, the pad for indicating the top position and the pad for indicating the impact position are equipped with a touch sensor, a pressure sensitive element, etc. that detects contact with the knee and activates a drive circuit for a sounding body such as a small speaker or an indicator such as a light emitting diode. Sensors may be provided to generate sound or light signals at the top position and the impact position.

〔Effect of the invention〕

As described above in detail, the golf practice tool of the present invention includes a swing trajectory guide member, a grip carriage assembly guided by the swing trajectory guide member, and a brake that brakes the swing when the swing is not in the hand-first state. means, top position indicating member,
and an impact position indicating member, allowing players to sense and master the correct form based on the principle of pendulum whip motion at an appropriate timing with a sense of rhythm, which can surely improve golf skills regardless of age or gender. Therefore, it can make a great contribution to increasing the interest of amateur golfers and others in playing golf.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an embodiment of the golf practice tool of the present invention, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIGS. Horizontal and cross-sectional views of the grip carriage assembly, Figures 5a-d
is an explanatory diagram to explain the principle of pendulum whip motion,
FIGS. 6a to 6f are explanatory diagrams showing the swing form due to pendulum whip motion, and FIG. 7 is a sectional view of another embodiment of the trajectory guide member and grip carriage assembly in the golf practice tool of the present invention. . DESCRIPTION OF SYMBOLS 1... Base plate, 2... Support mount, 6... Knee pads for top position, 7... Knee pads for impact position, 14... Track guide member, 16... Guide groove, 1
8... Grip cartridge assembly, 19...
Slide member, 21... lever member, 22... grip member, 25 ₁ , 25 ₂ , 25 ₃ , 25 ₄ ... belt with spring (tensile elastic means).

Claims (1)

[Scope of Claims] 1. A base plate installed on the floor as a foothold for a golf practitioner; A base plate installed in a position fixed to the base plate in front of the practitioner taking a swinging posture; a swing trajectory guide member; a grip carriage assembly including a grip member, which guides the practitioner along the trajectory of the swing trajectory guide member when the practitioner grips the grip member and performs a swing movement; a braking means provided in the pulley rest assembly and braking the slide member when the practitioner's swing is not in a hand-first state; A top position indicating member that allows the practitioner to sense that the knee has reached the top position at the moment the knee makes contact with the practitioner; A golf practice tool comprising: an impact position support member that allows the practitioner to sense that the movement has come to the impact position at the moment when the knee makes contact during the swing movement; 2. One end is locked to the base plate, the other end is provided with locking means for the waist of the practitioner, and with this locking means locked to the waist of the practitioner, the lower body of the practitioner is facing downward. 2. The golf practice tool according to claim 1, further comprising a tensile elastic means for applying a load of .