JP2004181154A - Golf impact image learning tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To propose a golf impact image learning tool for learning theory by obtaining an image of impact of a golf ball and a club face. <P>SOLUTION: This golf impact image learning tool 30 is composed of a body 36, a slide bar 31 slidably arranged on the body 36, a club head attachment P detachably fixed to an end part of the slide bar 31 by magnetic force and a pseudo-ball 11, and can drive out the pseudo-ball 11 by an elastic body 33 installed between the body 36 and the slide bar 31, and is provided with the club head attachment P different from a face angle θ by arranging an inclination of the face angle θin a plan view on a face surface F being an abutting surface of the pseudo-ball 11 of the club head attachment P. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an image training tool for learning a golf technique.
[0002]
[Prior art]
Generally, discussions on golf technology are grip, stance, swing, psychiatry, and the trajectory, ball muscle, and ball quality, which are the essence of golf, are mostly sensory discussions. I have.
The essence of the golf technique is that the player "gets the desired trajectory", "gets the desired ball muscle", and "gets the desired ball quality". In other words, it is necessary to have the right grounds, the right judgment, and the right skills for realizing the desired trajectory, ball muscle, and sphere.
[0003]
As shown in FIG. 56, in the golf world centered on the swing theory and not aware of the impact, the swing is important, the way the ball flies results in the score, and the way the ball flies is the result of the swing. However, it is difficult to control how the ball flies just by discussing the swing.
On the other hand, as shown in FIG. 57, in the golf world in which the impact is scientifically recognized, the swing results in the impact, the impact results in the way the ball flies, and the ball flies as the result. Cause a score.
That is, by learning the swing while scientifically recognizing the impact, the way the ball flies can be theoretically controlled, and as a result, a good score can be obtained.
[0004]
In order to discuss impact, it is necessary to correctly understand the basic principle phenomena of impact.
As a device for knowing the state of the impact and the swing, for example, using a technique described in Patent Document 1, a high-speed camera or an electric device captures a state in which the player swings normally and converts it into a continuous photograph or analysis. There are devices that do this. However, these devices are bulky and costly to capture the moment of impact.
[0005]
[Patent Document 1]
JP-A-7-80112
[Problems to be solved by the invention]
Therefore, in the present invention, in order to learn a technique that can control the way the ball flies, it is proposed to perform image training on the impact of the club and the ball, and, in the impact, a factor that determines how the ball flies, We propose a tool to obtain the image of "function called loft", "function called face orientation", and "function called gear effect".
[0006]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0007]
That is, according to the first aspect, the main body, a slide bar slidably provided on the main body, a club head attachment detachably fixed to an end of the slide bar, and a pseudo ball.
[0008]
In claim 2, an elastic body is provided between the main body and the slide bar.
[0009]
In a third aspect, the hitting surface of the pseudo ball of the club head attachment is a face surface, and the face surface is inclined in a plan view.
[0010]
According to a fourth aspect of the present invention, a magnet is fixed to the club head attachment, and a socket made of an iron material is provided at an end of the slide bar.
[0011]
In claim 5, the club head attachment comprises a base fixed to the end of the slide bar and a head attached to the base via a stay, and the stay supports the center of gravity of the head. It was done.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
FIG. 1 is a diagram illustrating the cycle of the world of subconsciousness and potential, FIG. 2 is a diagram showing how a golf ball flies, FIG. 3 is a diagram showing the basic spin of a golf ball, and FIG. 4 is an object and its rotation It is a figure showing a state.
FIG. 5 is a diagram for explaining a backspin phenomenon caused by a thrust force having a loft angle of zero degree, FIG. 6 is a diagram for explaining a backspin phenomenon caused by a thrust force having a loft angle of 10 degrees, and FIG. FIG. 8 is a diagram for explaining a spin phenomenon, and FIG. 8 is a diagram for explaining a back spin phenomenon by a thrust force at a loft angle of 45 degrees. FIG. 9 is a diagram illustrating a backspin phenomenon caused by a torque having a loft angle of zero degree, FIG. 10 is a diagram illustrating a backspin phenomenon caused by a torque having a loft angle of 10 degrees, and FIG. FIG. 12 is a diagram for explaining a backspin phenomenon caused by a torque at a loft angle of 45 degrees. FIG. 13 is a diagram illustrating the vertical gravity center movement of the ball, FIG. 14 is a diagram illustrating the vertical projection angle of the ball, FIG. 15 is a side view illustrating an example of the trajectory of the club number and the golf ball, and FIG. It is a figure which shows the principle phenomenon at the time of making a loft and laying down.
17 is a plan view showing three states of the orientation of the club face, FIG. 18 is a view for explaining a side spin phenomenon due to a thrust force in a square face, and FIG. 19 is a view for explaining a side spin phenomenon due to a thrust force in an open face. FIG. 20 is a view for explaining a side spin phenomenon caused by a thrust force in a closed face. FIG. 21 is a diagram for explaining a side spin phenomenon due to torque in a square face, FIG. 22 is a diagram for explaining the side spin phenomenon due to torque in an open face, and FIG. 23 is a diagram for explaining the side spin phenomenon due to torque in a closed face. FIG. 24 is a diagram for explaining horizontal movement of the center of gravity of the ball, and FIG. 25 is a diagram for explaining the horizontal projection direction of the ball. FIG. 26 is a diagram showing the ball muscle in the horizontal direction of the ball.
FIG. 27 is a plan view showing the impact when the hit point is the club sweet spot, FIG. 28 is a plan view showing the impact when the hit point is the neck side of the club, and FIG. 29 is a plan view showing the impact when the hit point is the toe side of the club. FIG. 30 is a plan view showing an impact at a certain time, and FIG. 30 is a view showing a ball muscle in a horizontal direction of the ball.
31 is a diagram illustrating a ball muscle in a square face, FIG. 32 is a plan view illustrating a ball muscle in a square face, FIG. 33 is a diagram illustrating a ball muscle in an open face, and FIG. 34 is a diagram illustrating a ball muscle in an open face. FIG. 35 is a diagram illustrating a ball muscle in a closed face, and FIG. 36 is a plan view illustrating a ball muscle in a closed face.
[0013]
FIG. 37 is a plan view showing the overall configuration of the golf impact image acquisition tool according to the present invention, FIG. 38 is a side view thereof, FIG. 39 is a plan view showing a dummy ball, and FIG. FIG. 41 is a diagram showing a club head attachment group for learning, FIG. 41 is a diagram showing a club head attachment group for acquiring an image of a function of face orientation, FIG. 42 is a diagram showing a wood attachment, FIG. 43 is a diagram showing an iron attachment, FIG. 44 is a plan view showing a launching body of a pseudo ball by the golf impact image acquisition tool.
FIG. 45 is a diagram illustrating an impact image when the loft angle is zero degree, FIG. 46 is a diagram illustrating an impact image when the loft angle is 10 degrees, and FIG. 47 is a diagram illustrating an impact image when the loft angle is 30 degrees. FIG. 48 is a diagram showing an impact image when the loft angle is 45 degrees.
FIG. 49 is a diagram showing an impact image for a square face, FIG. 50 is a diagram showing an impact image for an open face, and FIG. 51 is a diagram showing an impact image for a closed face.
FIG. 52 is a diagram showing an impact image when hit with a neck side, FIG. 53 is a diagram showing an impact image when hit with a toe side, and FIG. 54 is a diagram showing a golf impact image learning tool for learning an image of thrust force FIG. 55 is a view showing an operation image of the thrust force.
FIG. 56 is a diagram showing the world of golf centered on swing theory, and FIG. 57 is a diagram showing the world of golf in which impact is scientifically recognized.
[0014]
When working on sports, it is often the case that emphasis is placed on the skills and mental abilities of practice, but by practicing after understanding the principles of sports and understanding the mechanism scientifically, more effective and theoretical practice If this can be done, a dramatic improvement in technology can be expected.
[0015]
As shown in Fig. 1, it is possible to turn tacit knowledge into formal knowledge by consciously working on things that were done with sensation, with the simple principle of manifest ability, which is the first human ability. It is possible to realize a world that utilizes not only the cycle of thinking but also the cycle that elicits the subconscious and the ability that are the second human ability. Therefore, if there is an opportunity to learn and convince a clear scientific principle phenomenon, further interest and research efforts will increase, the inexplicable principle phenomenon will be convinced, it will evolve into self-confidence and draw out its potential We can expect that we can show.
[0016]
The golf impact image acquisition device according to the present invention focuses on "impact", which is one of the important determinants of the way a golf ball flies, and embodies the image to improve the golf ball and club impact. This is for understanding the principle phenomenon of. The impact is the moment when the club head hits the ball.
The ultimate goal is to acquire the knowledge and skills so that the "how to fly the desired golf ball" is not accidental, intentional, and reproducible. For this purpose, the so-called “concept golf,” in which a golf impact image learning tool is used to gain an understanding of the mechanism of the impact between the golf ball and the club face and gain knowledge, and then actually practice by hitting the golf ball. By executing the technique, an effective learning of a technique for freely controlling the way a golf ball flies is achieved.
[0017]
As shown in FIG. 2, a golf ball has a trajectory, a ball muscle, and a sphere, and the trajectory is a vertical flight state in which the ball flies in a parabola. The ball muscle refers to a flying state in which the ball bends in the horizontal direction, and the ball quality refers to a behavior after the ball falls. The sphere has three states: bouncing, running and rolling.Bound is the state of bouncing after falling, running is the state of running while bouncing after bouncing, and rolling is on the ground after running. It is the state of rolling as if crawling.
The backspin is the reverse rotation of the ball in the vertical direction, the top spin is the normal rotation of the ball in the vertical direction, and the side spin is the horizontal rotation of the ball in the horizontal direction. is there.
[0018]
A golf ball rotates vertically and horizontally when hit with a club face.
As shown in FIG. 3, the spin applied to the ball includes a back spin and a top spin, which are vertical rotations, and left and right side spins, which are horizontal rotations. The launched golf ball basically flies in a state where backspin and left or right side spin are applied, and the rotation of this ball creates the height of the ball's flight and the left and right bends It is.
The force that imparts rotation to the golf ball at impact is "thrust force" and "torque" from the standpoints of the club head and the ball. Hereinafter, each of the thrust force and the torque will be described in detail.
[0019]
First, the spin caused by the “thrust force” will be described. Here, the spin given to the ball is considered from the standpoint of the club head.
Assuming that each of the coefficient of restitution between the club face and the ball, the coefficient of elasticity of the ball, and the coefficient of friction between the club face and the ball is 1, the following consideration is made.
[0020]
As shown in FIG. 6, assuming that the ball is fixed and the club head is free, the club head collides with the ball and then reflects according to the rules of incident and reflected angles. That is, the launching force of the club has a reaction force that obeys the law of the angle of incidence and the angle of reflection with respect to the club face.
Then, assuming that the ball is fixed, the club head is free, and the follow-through is working, the club head moves in the direction in which the reaction force of the launching force and the vector of the follow-through force are combined after colliding with the ball. You will receive the power to do. That is, a force that moves along the club face is received.
In practice, the club head is fixed to the tip of the shaft, so it follows the trajectory of the swing follow-through, but at the moment of the collision, the club head slightly moves along the club face. The force to work is working. This force is called "thrust force". This force is generated at the contact surface with the ball, and a force acts on the ball, so that a rotational force acts on the ball and spin is applied to the ball.
[0021]
Next, spin caused by “torque” will be described. Here, from the standpoint of the ball, the spin given to the ball will be considered.
As shown in FIG. 4, when an external force of a certain strength or more is applied at a position off the center of gravity of the object, a rotational torque around the center of gravity acts. In particular, the phenomenon appears remarkably in a well-balanced object, and when a force exceeding a certain strength is applied to a position off the center of gravity, the force becomes a force to rotate the object, furthermore, a moment of inertia acts, It keeps spinning like a top.
At the time of impact, as shown in FIG. 10, the first contact point between the ball and the club face is a hit point, and the ball rotates when the ball is hit with the club face. At this time, "torque" is generated on the ball due to the difference between the center of gravity of the ball and the position of the hit point, and the ball is rotated.
[0022]
When the hit point is located above the center of gravity of the ball, the ball is top-spinned. In putters and approaches, top spin is effectively used. Similarly, when the strike point is located on the left side of the center of gravity of the ball as viewed from the club face side, right side spin is applied. When the strike point is located on the right side of the center of gravity of the ball as viewed from the club face side, left spin is applied. It takes a side spin.
[0023]
Next, three functions provided in the golf club for determining how to fly a ball will be described.
Golf clubs are provided with three functions: a "loft function", a "club face direction function", and a "gear effect" function. In order to deepen the understanding of "concept golf", these three functions will be described separately.
Actually, the above-mentioned three functions are caused by the principle phenomena at the same time, but here, the image is understood by dividing the ball in the vertical direction and the horizontal direction.
[0024]
First, the “loft function” of the golf club will be described.
In a golf club, a loft angle, which is an inclination angle of a club face with respect to the ground, is set in order to give a back spin to a ball. The loft angle is set to an approximate value according to the club number. Then, the "loft function" of the club causes a thrust force and a torque, which are two principle phenomena, at the time of impact. As a result, a back spin is given to the ball, and the ball is given a vertical projection angle.
[0025]
As the club number increases, the shaft length decreases and the loft angle increases.As the club number increases, the club face moves down from the center of gravity of the ball, that is, the position away from the center of gravity of the ball. Becomes the hit point, and the number of rotations of the ball increases. Depending on the strength of the ball's impact, for example, a club with a larger loft angle, such as a 9-iron, may have a higher backspin speed than a club with a smaller loft angle, such as a 3-iron. Increase. The higher the number of rotations of the back spin of the ball, the greater the lift acting on the ball, and accordingly, the higher the loft angle of the club, the higher the ball that hits the ball.
In other words, the backspin of the ball does not occur due to the rubbing between the ball and the club face or the ball rising up the club face, but the thrust, which is two phenomena, is caused by striking the contact point lower than the center of gravity of the ball. The force and torque work and backspin the ball.
[0026]
5 to 8, in order to show the relationship between the thrust force for rotating the ball and the loft angle, which is generated by the "loft function", the loft angles are set to zero, ten, thirty, and forty-five degrees, respectively. The ball is fixed, the club head is free, the launching force and the follow-through force are acting, and each of the coefficient of restitution of the club face and the ball, the coefficient of elasticity of the ball, and the coefficient of friction between the club face and the ball is 1. Is assumed.
[0027]
When the loft angle is zero degrees, both the launching force and the follow-through force pass on the center of gravity, which is the center of rotation of the ball, and no thrust force is generated between the club face and the ball. Therefore, when the loft angle is zero degrees, no turning force is generated on the ball.
[0028]
When the loft angle is 10 degrees, 30 degrees, and 45 degrees, it is assumed that the ball is fixed. Therefore, a collision force with the ball causes a reaction force to act on the club head, and the angle of the reaction force is Is determined by the angle of incidence of the launching force on the club head, and a reaction force acts in a direction in which the angle of incidence is equal to the angle of reflection. Then, a force acting in a direction in which the vector of the follow-through force and the reaction force is combined is a thrust force, and the thrust force acts in a downward direction along the club face. That is, when the loft angle is greater than zero degrees, a downward force is generated in the direction of the club face angle, that is, in a direction substantially equal to the loft angle, and the club head tries to dive under the ball.
[0029]
If the launching force and the follow-through force are equal, the thrust force increases as the loft angle increases from 10 degrees to 30 degrees to 45 degrees. As described above, since the thrust force is a force that imparts rotation to the ball, it can be seen that the greater the thrust force, the more rotational force that causes the ball to spin violently.
[0030]
Actually, each of the coefficient of restitution between the club face and the ball, the coefficient of elasticity of the ball, and the coefficient of friction between the club face and the ball is not 1, and the club head is fixed to the tip of the shaft and moves along the follow-through trajectory. And the ball is not fixed. However, at the moment of impact, the ball is in close contact with the club face in a crushed state, and the club head is moved along the follow-through trajectory. A thrust force, which is a force for moving the ball downward along the corner, acts on the ball, and backspin occurs in the ball.
[0031]
On the other hand, in FIG. 9 to FIG. 12, in order to show the relationship between the torque for rotating the ball and the loft angle, which is generated by the “loft function”, the loft angles are set to zero degree, 10 degrees, 30 degrees, and 45 degrees, respectively. It is assumed that it has been done.
[0032]
When the loft angle is zero degrees, the direction of action of the launching force passes over the center of gravity, which is the center of rotation of the ball, and no torque is generated on the ball. Therefore, when the loft angle is zero degrees, no turning force is generated on the ball.
[0033]
When the loft angle is 10 degrees, 30 degrees, and 45 degrees, the direction of action of the launching force is not on the center of gravity, which is the center of rotation of the ball. Since the torque is generated separately from the component force and the tangential component force that is the rotational force (torque) of the ball, the ball rotates around the center of gravity.
[0034]
If the launching force is equal, as the loft angle increases from 10 degrees to 30 degrees to 45 degrees, the torque acting on the ball increases, that is, a rotational force that causes the ball to spin violently occurs. I understand.
[0035]
As described above, the back spin is given to the ball by the thrust force and the torque generated by the “loft function” of the golf club. According to the principle of the gyroscope, the ball to which the backspin is given flies while maintaining a constant attitude with respect to the space while maintaining the backspin due to the moment of inertia acting around the rotation axis (center of gravity). . In other words, the backspin of the ball is indispensable for maintaining a constant posture, reduces the influence of the wind, and plays an important role of flying the ball in the launched direction.
In addition, a ball that has not been backspin does not exert lift on the ball, and cannot maintain a constant posture in space, becomes unstable, and stalls like a balloon or is affected by the wind Or be washed away.
[0036]
The influence of the centrifugal force applied by the length of the shaft and the degree of transmission of the force cannot be ignored, but the ninth iron has a higher ball projection angle than the fifth iron having a smaller loft angle than the ninth iron. At the same time, the number of back spins of the ball increases, and as a result, the ball flies high, but on the other hand, the flight distance decreases. Like a wedge, a loft that is sleeping at around 50 degrees will have an extremely high pop-out angle and at the same time violently backspin the ball.
The amount of deformation of the ball at the time of impact is the amount of energy transmitted from the club and is the amount of work. If the club has a constant work load on the ball, it is natural that the impact distance is converted into rotational energy and vector energy, so that the overall flight distance decreases. As the loft angle of the club increases, the number of backspins of the ball increases, so that the ball rises so high that the work in the vertical direction increases, and the work in the horizontal direction decreases. Will fall.
[0037]
From the trajectory example shown in FIG. 15, it can be seen that the launch angle and the back spin of the ball play the most important roles in the flight distance and the flying height of the ball.
As shown in FIG. 13, the movement of the center of gravity of the ball in the vertical direction is such that the angle of incidence and the angle of reflection with respect to the club face are substantially equal, and the direction of action of the launching force is determined according to the physical principle phenomenon of the angle of incidence reflection. In calculation, the launch angle of the ball in the vertical direction is, as shown in FIG. 14, the vector synthesis direction of the launch force, the launch energy of the ball, and the follow-through force.
That is, the projection angle of the ball is a result of the incident angle reflection angle with respect to the club face at impact and the vector synthesis. However. Strictly speaking, the ball projection angle slightly varies depending on the elastic modulus, restitution coefficient, friction coefficient, magnitude of the launching force, and magnitude of the follow-through force of the material.
[0038]
However, even for the same club, the original loft angle (the state in which the sole is substantially parallel to the ground), the loft is raised (the club face is open more upward than the original loft), and the loft is laid down (the original (The club face is closed below the loft), the manner in which the launched ball flies in the vertical direction differs, and the trajectory and sphere of the ball change. FIG. 16 is a table showing the cause and the result.
[0039]
At the original loft angle, the ball can be given an appropriate backspin and launch angle, which is the original performance according to the club, and the ball has an appropriate trajectory according to the club.
Compared to the original loft angle, if you raise the loft, the angle of the club face will be smaller than the original loft angle, so the backspin of the launched ball will decrease and the launch angle will decrease, Ball trajectory is reduced.
Compared to the original loft angle, when the loft is laid down, the angle of the club face becomes larger than the original loft angle, so the backspin of the launched ball increases and the launch angle increases, The trajectory of the ball increases.
In this way, the vertical launch angle of the ball can also be controlled by raising the loft or laying down the loft.
[0040]
Next, the "function of face orientation" of the club will be described.
As a result of the two principle phenomena caused by the "function of the face orientation", the ball is given a spin in either the left or right direction and a horizontal projection angle.
As shown in FIG. 17, even if the launching direction of the club is constant, the club face is oriented in an open face in which the toe side is located rearward with respect to the launching direction, a square face perpendicular to the launching direction, and a launching direction. On the other hand, there are three states of the closed face where the neck side is located at the back.
The side spin of the ball is attributed to the function of the orientation of the face, and produces a ball muscle in the flight of the ball, that is, a horizontal launch angle and a bending to the left and right in the horizontal direction, which is important in controlling the ball muscle of the ball. Plays a role.
[0041]
Similar to the back spin, the side spin of the ball is due to the thrust force resulting from the “function of the face orientation” of the golf club and the rotational force generated by the torque. The club face has an open face where the toe side of the club head is located behind the neck side in the direction of the ball at impact and the club face opens and hits the ball at impact. And a closed face in which the toe side of the club head is located ahead of the neck side in the direction of the ball at impact to close the club face and hit the ball. Depending on the direction of the club face, a ball line is determined by the direction in which the hit ball is projected in the horizontal direction and the side spin.
[0042]
18 to 20, in order to show the relationship between the thrust force for rotating the ball and the face direction generated by the "function of the face direction", the face directions are defined as open face, square face, and closed face, respectively. The ball is fixed, the club head is free, the launching force and the follow-through force are acting, and the coefficient of restitution of the club face and the ball, the coefficient of elasticity of the ball, and the coefficient of friction between the club face and the ball are each one. It is assumed that there is a certain state.
[0043]
When the face direction is a square face, both the launching force and the follow-through force pass on the center of gravity that is the center of rotation of the ball, and no thrust force is generated between the club face and the ball. Therefore, when the face direction is a square face, the ball does not generate a rotational force for generating side spin.
[0044]
When the face is open face or closed face, it is assumed that the ball is fixed, so a collision force with the ball causes a reaction force to act on the club head. The reaction force is determined by the angle of incidence of the force on the club head, and acts in a direction in which the angle of incidence and the angle of reflection are equal. The force acting in the direction in which the vector of the follow-through force and the reaction force are combined is the thrust force, which acts in the neck side direction along the club face when the face is open, and when the face is closed. Acts in the toeside direction along the club face.
[0045]
That is, when the face direction is the open face, a rotational force acts on the ball due to the thrust force acting in the neck side direction along the direction of the club face, and a right side spin occurs on the ball. Further, when the face direction is a closed face, a rotational force acts on the ball due to a thrust force acting in the toe side direction along the direction of the club face, and a left side spin occurs on the ball.
[0046]
On the other hand, in FIGS. 21 to 23, in order to show the relationship between the torque for rotating the ball and the direction of the face, which is generated by the "function of the direction of the face", the directions of the face are respectively open face, square face, and closed face. Is assumed.
[0047]
When the face direction is a square face, the direction of action of the launching force passes on the center of gravity, which is the center of rotation of the ball, and no torque is generated on the ball. Therefore, when the loft angle is zero degrees, no turning force is generated on the ball.
[0048]
In addition, when the face direction is an open face or a closed face, since the action direction of the launching force is not on the center of gravity which is the center of rotation of the ball, the launching force is equal to the direction of the center of gravity which is the ball's popping force. Since the torque is generated separately from the force and the tangential component which is the rotational force (torque) of the ball, the ball rotates around the center of gravity. When the face direction is an open face, the ball is rotated to the right side by torque, that is, clockwise rotation is applied in plan view. When the face direction is a closed face, the ball is rotated to the left side by torque, that is, when viewed in plan. , A counterclockwise rotation is applied.
[0049]
As described above, the side spin is applied to the ball by the thrust force and the torque, which are two principle phenomena generated by the “function of the face direction”.
Next, the horizontal projection angle of the ball determined by the “function of the face direction” will be described.
[0050]
The direction of movement of the center of gravity of the ball in the horizontal direction when the face direction is a square face is based on the principle of the angle of incidence on the club face and the angle of reflection on the club face. Move at right angles.
Further, as shown in FIG. 24, when the direction of the face has an angle such as an open face or a closed face, the moving direction of the center of gravity of the ball in the horizontal direction depends on the principle of the incident angle and the reflection angle on the club face. The angle of incidence and the angle of reflection are equal to each other, and when the face is open, the center of gravity of the ball moves to the toe side from the hitting direction at impact, and when the face is closed, the center of gravity of the ball moves to the neck side rather than the hitting direction at the time of impact. become.
[0051]
In the calculation, the horizontal projection angle of the ball is, as shown in FIG. 25, the combined direction of the vector of the energy of the ball and the follow-through force. However, the actual horizontal launch angle of the ball largely depends on factors such as the ball's coefficient of restitution and launch force, in addition to the direction of movement of the center of gravity of the ball determined by the orientation of the club face.
[0052]
Therefore, in the case of an open face, the ball jumps out to the right, and due to the right side spin on the ball, the ball becomes a ball that flies while bending rightward.In the case of a closed face, the ball jumps out to the left, The hanging left side spin turns the ball into a flying ball while turning right. Of course, at the same time, the ball also has a vertical backspin.
[0053]
The orientation of the club face and the left and right side spins of the ball are important factors that affect the ball's ball muscle, and the ball muscle greatly changes depending on the horizontal launch angle of the ball and the direction of the ball's side spin. As shown in FIG. 26, slice balls, fade balls, straight balls, draw balls, and hook balls are determined.
[0054]
Next, the “gear effect” will be described.
If the "function of opening the club face" is the first side spin factor, the "gear effect" is the second side spin factor. When the ball is hit at a position off the center of gravity of the club face at impact, the club head slightly shakes. At this time, the phenomenon that side spin occurs due to the engagement of the club face and the ball is the “gear effect”. In particular, a gear effect is remarkably exhibited in a golf club having a long shaft such as a driver or a long iron.
[0055]
As shown in FIG. 27, when the ball is hit at a sweet spot on the club face (at the same position as the center of gravity of the club head) in a direction perpendicular to the club face, the ball receives back spin due to the loft, It is a straight ball that flies straight without side spin.
[0056]
As shown in FIG. 28, when the ball is hit in a direction perpendicular to the club face on the neck side from the center position of the club face (the same position as the center of gravity of the club head), the center of gravity of the club head is instantaneously and slightly changed. A phenomenon occurs in which the club head rotates at the center, and the gear rotates at the contact point (hitting point) between the ball and the club head.
The ball jumps out while applying clockwise side spin in a plan view, and becomes a fade ball as a ball muscle. At this time, the ball also has a back spin caused by the loft.
[0057]
As shown in FIG. 29, when the ball is hit in a direction perpendicular to the club face on the toe side from the center position of the club face (the same position as the center of gravity of the club head), the center of gravity of the club head is instantly and slightly centered. As a result, a phenomenon occurs in which the club head rotates and the gear rotates at the contact point (hitting point) between the ball and the club head.
The ball jumps out while applying a counterclockwise side spin in plan view, and becomes a draw ball as a ball muscle. At this time, the ball also has a back spin caused by the loft.
[0058]
The side spin of the ball caused by the above-mentioned “gear effect” is an important factor that affects the ball muscle. That is, the ball muscle of the ball is changed by catching the ball on the toe side or the neck side from the center of gravity of the club head, so that the gear effect is an important factor that determines the ball muscle together with the face direction.
[0059]
By understanding the "function of the face direction" and "the function of the gear effect", if it becomes possible to control the protrusion angle of the ball or the rotation of the ball to some extent, as shown in FIG. Various ball muscles such as a draw ball, a hook ball, a straight ball, a fade ball, and a slice ball can be intentionally put out depending on the hit position of the ball on the club face.
[0060]
The chart shown in FIG. 31 and FIG. 32 show the principle phenomenon at the time of impact when the club face is a square face.
When the hitting position of the ball is on the neck side of the club face, the right side spin is applied to the ball by the "gear effect" function, the ball jumps out straight, and becomes a ball muscle which flies while turning rightward, and becomes a fade ball.
When the ball hits the sweet spot on the club face, neither the "feature of the club face" nor the "gear effect" works, and the ball strikes the ball straight and launches straight. It becomes.
When the hitting position of the ball is on the toe side of the club face, the ball is subjected to a left-side spin due to the "gear effect" function, and jumps out straight, and becomes a ball muscle that flies while turning leftward, and becomes a draw ball.
[0061]
The chart shown in FIG. 33 and FIG. 34 show the principle phenomenon at the time of impact when the club face is an open face with an opening angle of +10 degrees.
When the ball is hit at the neck side of the club face, the club face directs a rightward jumping force due to the club face orientation, and the right side spin is applied. With the right side spin, it jumps out to the right and becomes a ball that flies while making a large turn to the right, forming a strong sliced ball.
When the ball is hit at the sweet spot on the club face, the "club face orientation function" generates a rightward jumping force, applies right side spin, jumps rightward, and right side spins to the right. It becomes a ball muscle flying while bending in the direction, and becomes a slice ball.
When the ball is hit on the toe side of the club face, a rightward spin force is generated by the “club face orientation” function, and a right side spin is applied. It takes a side spin. Therefore, the ball jumps out to the right, and the right side spin and the left side spin cancel each other out. As a result, the ball becomes a ball that flies while turning rightward by the right side spin, and becomes a fade ball.
[0062]
The chart shown in FIG. 35 and FIG. 36 show the principle phenomenon at the time of impact when the club face is a closed face having an opening angle of −10 degrees.
When the ball is hit on the neck side of the club face, the club face direction generates a leftward jumping force, and the left side spin is applied. Right side spin is applied. Accordingly, the ball jumps out to the left, and the right side spin and the left side spin cancel each other out. As a result, the ball becomes a ball that flies while the left side spin is applied, and becomes a draw ball.
When the ball hits the sweet spot on the club face, the club face directs a leftward jumping force due to the function of the club face orientation, and the left side spin is applied. It becomes a ball muscle that flies while bending in the direction, and becomes a hook ball.
When the ball is hit on the toe side of the club face, the "club face orientation" function generates a leftward jumping force, applies left side spin, and the "gear effect function" It takes a side spin. Therefore, the ball jumps out to the left and becomes a ball that flies while turning largely to the left due to the left side spin, resulting in a strong hook ball.
[0063]
As described above, the principle phenomena at the time of impact due to the “loft function”, “club face direction function”, and “gear effect function” are factors that determine how the ball flies.
Therefore, in order to actually understand and understand each of the "loft function", "club face direction function", and "gear effect function" with the naked eye, using the golf impact image learning tool shown below Perform image training in a virtual world.
[0064]
Next, the golf impact image learning device 30 will be described. Hereinafter, in the description of the structure of the golf impact image acquisition tool 30, the left and right on the paper surface of FIG.
[0065]
As shown in FIGS. 37 and 38, the golf impact image learning tool 30 mainly includes a main body 36, a slide bar 31, and a club head attachment P attached to the tip of the slide bar 31.
The main body 36 has a substantially rectangular shape as a whole, and a substantially rectangular shape in plan view is cut out at one corner thereof, and in the present embodiment, a right front corner is cut out. A club head attachment P attached to the tip of the slide bar 31 is arranged in the cutout portion 36a, and the length of the cutout portion 36a in the short direction is the length of the club head attachment P in the short direction. It is configured to fit.
[0066]
A handle 35 for fixing the position of the main body 36 or moving the main body 36 is attached to the left part of the main body 36, and the slide bar 31 is operated while holding the handle 35 by hand. The slide bar 31 is disposed on the right side of the main body 36 on the opposite side of the handle 35 from the left and right, so as to be able to do so.
[0067]
The slide bar 31 includes a bar main body 31c, a socket support portion 31b fixedly provided at a front portion of the bar main body 31c, and a socket portion 31a integrally formed at a front portion of the socket support portion 31b. . At least the socket portion 31a is made of a material (material containing iron) that attracts to the magnet.
A handle 31d for operating the slide bar 31 is fixed on the upper surface of the bar main body 31c, and the slide bar 31 is slid in the front-rear direction with the handle 31d. A hole 31f for inserting one end of a cord 38 connecting the bar main body 31c and the rear part of the main body 36 is formed in the rear part of the bar main body 31c. An insertion hole 31e for inserting a string-like elastic body 33 (for example, a rubber cord or the like) as a biasing member is formed.
[0068]
A bar body 31c of the slide bar 31 is fitted via a bearing (not shown) on a rail 32 fixed to the upper surface in accordance with the longitudinal direction of the body 36, and the slide bar 31 smoothly moves on the rail 32 in the front-rear direction. , And at this time, it is configured to guide so as not to swing up, down, left and right.
[0069]
A locking member 39 for locking one end of the string-like elastic body 33 is fixedly provided on the upper portion of the main body 36, while the other end of the string-like elastic body 33 is provided on the right side surface of the body 36. Are fixedly provided. The string-like elastic body 33 is inserted into the insertion hole 31e of the bar main body 31c at an intermediate portion thereof, and both ends are hooked by the hook members 39 and 34.
The hook members 34, 34, 34 provided on the right side surface of the main body 36 are pin-shaped members, respectively, and are provided at a plurality of different front and rear positions. Selectable before and after. In this way, the rearward sliding position of the slide bar 31 can be changed, and the urging force of the slide bar 31 can be changed. However, a spring may be disposed between the main body 36 and the slide bar 31 instead of the string-shaped elastic body 33. In this case, the code 38 can be omitted.
[0070]
As described above, by providing the string-like elastic body 33 between the main body 36 and the slide bar 31, a feeling of launching is added, and the launching force of the pseudo ball 11 is made substantially constant, and a constant launching force is applied. The pop-up state due to the difference in the face angle θ can be known.
[0071]
As shown in FIG. 39, a disk 11a having a cross arrow 11b on the surface is used as the pseudo ball 11. The back surface of the disk 11a is assumed to be smooth. However, the shape is not limited as long as the rotation and the rotation direction can be recognized instead of the cross arrow 11b, and a circle or the like may be provided on the surface near the outer periphery. The pseudo ball 11 has a size corresponding to the club head attachment P. In addition, the main body 36 is placed on a slippery plate-shaped table having a smooth surface, and the pseudo ball 11 is punched out to recognize the protruding state. It is preferred that the thrust be different. In addition, by drawing the left and right center lines of the slide bar 31 on the table, and by marking the position where the pseudo ball 11 is to be placed in the left and right direction, the user can recognize and learn the "gear effect function". Can be easily aligned. This table can be formed integrally with the main body 36.
In addition, by changing the size of the pseudo ball 11 with respect to the size of the club head attachment P, the pseudo ball 11 can be regarded as not only a golf ball but also a baseball ball or a tennis ball. For example, when the pseudo ball 11 is regarded as a baseball, the diameter of the pseudo ball 11 is made larger than the face surface F of the club head attachment P.
[0072]
The club head attachment P is provided according to the image of the skill to be acquired. Each club head attachment P is provided with a magnet 55 for attracting the socket portion 31a of the slide bar 31 by magnetic force.
The magnet 55 of the club head attachment P is configured to fit into the fitting portion formed in the socket portion 31a, so that the position of the club head attachment P is securely fixed to the socket portion 31a. ing.
As described above, the attachment and detachment of the club head attachment P is facilitated by using the magnetic force to fix the club head attachment P to the socket portion 31a.
[0073]
The group of club head attachments P shown in FIG. 40 is for learning the “loft function” of the club, and includes a loft zero-degree attachment P (26), a loft 10-degree attachment P (27), and a loft 30-degree attachment P ( 28) and a loft 45-degree attachment P (29).
These attachments P (26, 27, 28, 29) are formed such that a face surface F, which is a front surface of the main body 56 of the attachment P, is provided with an inclination in plan view, and a rear surface of the main body 56 facing the face surface F. If the face angle F is parallel to the face surface F, the face angle θ is assumed to be zero degree, and the face angle θ is substantially zero degree in the loft zero degree attachment P (26), and the face angle θ is zero in the loft 10 degree attachment P (27). It is approximately 30 degrees for the loft 30-degree attachment P (28) and approximately 45 degrees for the loft 45-degree attachment P (29).
[0074]
As described above, by setting an angle to the face surface F of the club head attachment P and setting the face angle θ, golf clubs having different loft angles can be assumed.
The face angle θ is not limited to these attachments P, and it is possible to manufacture the attachments P having different face angles θ as needed.
[0075]
The face angle θ of each attachment P is set based on the fact that the loft angle of the first wood is 11 degrees, the loft angle of the fifth iron is 31 degrees, and the loft angle of the ninth iron is 47 degrees. It is assumed that the loft 10-degree attachment P (27) is in the state of No. 1 wood, the loft 30-degree attachment P (28) is in the state of No. 5, and the loft 45-degree attachment P (29) is in the state of No. 9.
[0076]
The group of club head attachments P shown in FIG. 41 is for learning the “function of face orientation” of the club, and has a face opening zero degree attachment P (24) and a face opening +10 degree attachment P (25). , A face opening -10 degree attachment P (23).
These attachments P (23, 24, 25) are provided with an inclination in a plan view on a face surface F, which is the front surface of the main body 56 of the attachment P, so that the angle of the rear surface of the main body 56 facing the face surface F is different from that of the attachment P. Assuming that the face angle F is zero when the face surface F is parallel, the face angle θ is substantially zero degree in the face opening zero-degree attachment P (24), and the face opening +10 degree attachment P (25). In the case of the attachment P (25), the angle is approximately -10 degrees.
The face angle θ is not limited to these attachments P, and it is possible to manufacture the attachments P having different face angles θ as needed.
[0077]
The face opening zero-degree attachment P (24) has a square face when the club face is a square face, the face opening +10 degree attachment P (25) has a club opening when the club face is an open face, and the face opening -10 degree attachment P (23) has a club face. The case of a closed face is assumed.
[0078]
The club head attachment P shown in FIGS. 42 and 43 is for learning the “function of a gear effect” of the club, and is a wood attachment P (20) and an iron attachment P (22).
[0079]
On the upper surface of the main body 56 of the wood attachment P (20) and the iron attachment P (22), a magnet 55 for attaching to the socket of the slide bar 31 is fixed, and the rear portion of the stay 57 is fixed on the side surface of the main body 56. A head 58 is fixed to the front of the stay 57. The stay 57 is made of a plate material having elasticity such as a metal plate, and a stay 57 made of a material that is slightly bent when the pseudo ball 11 is struck is used. The front surface of the head portion 58 is a face surface F, and the stay 57 is configured to support substantially the center of gravity G of the head portion 58.
[0080]
The wood attachment P (20) is configured assuming the club head of a wood club, and the iron attachment P (22) is configured assuming the club head of an iron, and the head portion 58 of the wood attachment P (20) is configured as an iron attachment P ( 22) is formed in a more rounded shape than the head portion 58.
In addition, in the iron attachment P (22), a putter club head can also be assumed.
[0081]
In the golf impact image learning device 30 configured as described above, as shown in FIG. 44, the club head attachment P attached to the socket portion 31a of the slide bar 31 is changed according to the target to be learned, and is written on the main body 36. When the pseudo ball 11 is arranged at the ball matching position 37, the slide bar 31 is pulled rearward by holding the handle 31d of the slide bar 31, and the handle 31d is released. Sliding forward with momentum. When the pseudo ball 11 comes into contact with the club head attachment P connected to the front portion of the slide bar 31 and is hit, the pseudo ball 11 jumps forward.
[0082]
Next, a method of acquiring an impact image using the golf impact image acquisition tool 30 will be described. Hereinafter, the front, rear, left, and right are expressed in accordance with the launch of the golf ball.
[0083]
First, the launch for learning the “loft function” will be described.
At this time, the loft zero-degree attachment P (26), the loft 10-degree attachment P (27), the loft 30-degree attachment P (28), and the loft 45-degree attachment P (29) are connected to the socket of the slide bar 31 of the golf impact image learning tool 30. The dummy ball 11 is launched by being attached to the portion 31a.
[0084]
When the pseudo ball 11 is launched using the loft zero-degree attachment P (26), as shown in FIG. 45, the pseudo ball 11 is struck straight and powerfully without rotating, and this is the inactive state of the “loft function”. It becomes the impact image of a golf ball.
[0085]
When the pseudo ball 11 is hit by using the loft 10-degree attachment P (27), the pseudo ball 11 turns slightly upward (a rotation of the cross arrow 11b can be recognized) slightly diagonally to the left as shown in FIG. Jump out. This is the backspin applied to the golf ball when the ball is hit with a club having a loft angle of 10 degrees, the moment of inertia due to the thrust force and torque applied to the golf ball, and is the principle of the function of the golf ball soaring appropriately. This makes it possible to obtain an impact image including the launch angle of the golf ball when the ball is hit with a club having a loft angle of 10 degrees.
[0086]
When the pseudo ball 11 is hit by using the loft 30-degree attachment P (28), the pseudo ball 11 jumps obliquely to the left while rotating as shown in FIG. This is the backspin of the golf ball at a loft angle of 30 degrees, the moment of inertia due to the thrust force and the torque of the spin applied to the golf ball, and is the principle of the function of the golf ball soaring appropriately. This makes it possible to obtain an impact image including the launch angle of the golf ball when the ball is hit with a club having a loft angle of 30 degrees.
[0087]
When the pseudo ball 11 is hit using the 45-degree loft attachment P (29), as shown in FIG. 48, the pseudo ball 11 jumps out diagonally to the upper left while backspinning. This is the backspin of the golf ball at a loft angle of 45 degrees, the moment of inertia due to the thrust force and the torque of the spin applied to the golf ball, and is the principle of the function of the golf ball soaring appropriately. This makes it possible to obtain an impact image including the launch angle of the golf ball when the ball is hit with a club having a loft angle of 45 degrees.
[0088]
The momentum of the launched pseudo ball 11 becomes weaker in the order of the loft zero-degree attachment P (26) → the loft 10-degree attachment P (27) → the loft 30-degree attachment P (28) → the loft 45-degree attachment P (29).
Since a part of the launching energy of the pseudo ball 11 was converted to rotational energy and energy for moving upward, the momentum of the pseudo ball 11 was weakened. Thus, it is possible to obtain an image in which the flight distance is reduced. Further, it is possible to obtain an image in which the back spin produces a flight distance of the golf ball.
[0089]
Next, the launch for learning the “function of the club face orientation” will be described.
When the pseudo ball 11 is hit using the zero-degree face opening attachment P (24), as shown in FIG. 49, the pseudo ball 11 jumps out in a horizontal direction without rotating. The state of the face surface F and the behavior of the pseudo ball 11 due to this launch serve as an impact image of the golf ball when the club face is a square face.
[0090]
When the pseudo ball 11 is hit using the face opening +10 degree attachment P (25), as shown in FIG. 50, the pseudo ball 11 slightly jumps obliquely upward to the left while rotating clockwise. The cause of the right side spin is caused by the difference between the torque generated because the portion on the left side of the center of gravity of the pseudo ball 11 becomes the hit point due to the opening of the face surface F by +10 degrees, and the difference between the direction of the face surface F and the launching force. This is due to the thrust force. Then, the state of the face surface F and the behavior of the pseudo ball 11 due to the launch become an impact image including the launch direction of the golf ball when the club face is an open face.
[0091]
When the pseudo ball 11 is hit using the face opening -10 degree attachment P (23), as shown in FIG. 51, the pseudo ball 11 jumps slightly diagonally downward and left while rotating counterclockwise. The projection angle of the launched pseudo ball 11 is a result of the incidence angle reflection angle and the vector composition at the impact of the respective opening angles or fogging angles, and is the ball projection angle.
The cause of the left side spin is due to the difference between the torque generated because the right side from the center of gravity of the pseudo ball 11 becomes the hitting point due to the opening of the face F by -10 degrees, and the difference between the direction of the face F and the launching force. Thrust force. Then, the state of the face surface F and the behavior of the pseudo ball 11 by this launch become an impact image including the launch direction of the golf ball when the club face is a closed face.
[0092]
Next, the launch for learning the “gear effect function” will be described. The gear effect is caused by hitting the ball out of the center of gravity of the club head.
When the pseudo ball 11 is placed on the neck side from the position of the center of gravity G of the club face and is hit using the wood attachment P (20), as shown in FIG. 52, the pseudo ball 11 jumps out while rotating slightly to the right. The clockwise rotation of the pseudo ball 11 is due to a gear effect which leads to a factor that the golf ball flows to the right while flying. Then, the state of the face surface F and the behavior of the pseudo ball 11 due to this launch become an impact image including the launch direction of the golf ball on which the gear effect is acting.
[0093]
On the other hand, if the pseudo ball 11 is placed on the toe side from the position of the center of gravity G of the club face and is hit using the wood attachment P (20), as shown in FIG. . The counterclockwise rotation of the pseudo ball 11 is due to a gear effect that leads to a factor that the golf ball flows to the left while flying.
[0094]
As described above, the gear effect produced on the golf ball due to the deviation of the hitting position from the center of gravity of the club head is a slight rotation, but in fact, a positional deviation of about half the green diameter occurs at the arrival point of the golf ball.
For example, in a tee shot with an OB line on the left side, in order to hit a ball that does not go to the left, the stance strikes the ball on the left side of the fairway and hits the ball on the neck side of the club face. The launched ball jumps out along the left side of the fairway, and eventually the ball flows down to the right side, and as a result, the fairway center can be kept.
At this time, if the player hits the ball on the toe side of the club face from the center of gravity of the club face and further closes the club face, the ball is hooked and jumps to the left OB zone.
[0095]
In particular, when it is desired to confirm the “thrust force” acting between the club head and the ball, as shown in FIG. 54, the “loft function” and “face” are used as the club head attachment P of the golf impact image learning tool 30. A club head attachment having the same shape as the club head attachment used to confirm the function of “orientation” is used, and the club head attachment without the magnet 55 (P (40)) is used. Accordingly, the club head attachment P (40) does not attach to the socket portion 31a of the slide bar 31, and the club head attachment P (40) is pulled at a predetermined position, the slide bar 31 is pulled backward, and the hand is released from the handle 35. When the operation is performed, the club head attachment P (40) pops out.
[0096]
In order to visually recognize the "thrust force", the above-described launching operation is performed, and the club head attachment P (40) collides with the ball 11 whose position is fixed. As shown in FIG. 55, the club head attachment P (40) colliding with the ball 11 moves along the inclination of the face surface F. From this, it can be confirmed that a thrust force for moving in the direction along the club face acts between the ball and the club head at the time of impact.
[0097]
As described above, the golf impact image learning tool 30 is a test device that operates simply. By using this, the golf club has a “loft function”, a “face direction function”, and a “gear effect function”. Can actually be witnessed. In the past, it was only possible to see the world of experiments through a large impact robot and a computer measuring instrument and an ultra-high-speed camera. You can learn. Also, it can be convinced that the dominating dominating ball is the "loft function", "face direction function", and "gear effect function" phenomena. Then, it is possible to construct an image of the optimal impact on the desired ball flight.
In this way, the principle phenomena of golf impact can be confirmed in a virtual world, and if the image of the impact on the desired ball flight is arranged, then this image can be used as a grip, stance, By feeding back to a preparation operation for hitting such as a swing, it is expected that the construction of golf technology will be ensured.
[0098]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0099]
In other words, the present invention comprises a main body, a slide bar slidably provided on the main body, a club head attachment removably fixed to an end of the slide bar, and a pseudo ball. With a simple configuration, it is possible to simulate the flying direction and the rotation of the ball at the time of impact of golf to obtain images of a "loft function", a "face direction function", and a "gear effect function".
[0100]
Since the elastic body is provided between the main body and the slide bar as described in claim 2, the pseudo ball can be launched with a substantially constant strength, and there is no variation in the flying direction of the pseudo ball at the time of learning. Can be recognized.
[0101]
According to a third aspect of the present invention, the hitting surface of the pseudo ball of the club head attachment is a face surface, and the face surface is inclined in a plan view. can do.
[0102]
Since a magnet is fixed to the club head attachment and a socket made of an iron material is provided at an end of the slide bar, the club head attachment can be easily attached and detached, and the change can be easily performed.
[0103]
According to a fifth aspect of the present invention, the club head attachment comprises a base fixed to the end of the slide bar and a head attached to the base via a stay, and the stay supports the center of gravity of the head. As a result, the club head attachment that obtains the image of the "gear effect function" can be easily configured, and pseudo reproduction can be easily performed.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a cycle of a world of subconsciousness and potential ability.
FIG. 2 is a diagram showing how a golf ball flies.
FIG. 3 is a view showing a basic spin of a golf ball.
FIG. 4 is a diagram showing an object and its rotating state.
FIG. 5 is a view for explaining a back spin phenomenon caused by a thrust force having a loft angle of zero degree.
FIG. 6 is a diagram illustrating a back spin phenomenon caused by a thrust force having a loft angle of 10 degrees.
FIG. 7 is a view for explaining a back spin phenomenon caused by a thrust force having a loft angle of 30 degrees.
FIG. 8 is a diagram illustrating a backspin phenomenon caused by a thrust force having a loft angle of 45 degrees.
FIG. 9 is a diagram illustrating a backspin phenomenon caused by a torque having a loft angle of zero degree.
FIG. 10 is a diagram illustrating a backspin phenomenon caused by a torque having a loft angle of 10 degrees.
FIG. 11 is a view for explaining a backspin phenomenon caused by a torque having a loft angle of 30 degrees.
FIG. 12 is a diagram illustrating a backspin phenomenon caused by a torque at a loft angle of 45 degrees.
FIG. 13 is a view for explaining vertical gravity center movement of a ball.
FIG. 14 is a view for explaining a vertical projection angle of a ball.
FIG. 15 is a side view showing an example of the trajectory of a club number and a golf ball.
FIG. 16 is a view showing a principle phenomenon when a loft is laid down and laid down.
FIG. 17 is a plan view showing three states of the orientation of the club face.
FIG. 18 is a view for explaining a side spin phenomenon caused by a thrust force in a square face.
FIG. 19 is a view for explaining a side spin phenomenon caused by a thrust force in an open face.
FIG. 20 is a view for explaining a side spin phenomenon caused by a thrust force in a closed face.
FIG. 21 is a view for explaining a side spin phenomenon caused by torque in a square face.
FIG. 22 is a view for explaining a side spin phenomenon caused by torque in an open face.
FIG. 23 is a view for explaining a side spin phenomenon caused by torque in a closed face.
FIG. 24 is a view for explaining horizontal movement of the center of gravity of a ball.
FIG. 25 is a view for explaining a horizontal projection direction of a ball.
FIG. 26 is a view showing a ball muscle in a horizontal direction of the ball.
FIG. 27 is a plan view showing an impact when a hit point is a sweet spot of a club.
FIG. 28 is a plan view showing the impact when the hit point is the neck side of the club.
FIG. 29 is a plan view showing the impact when the hit point is on the toe side of the club.
FIG. 30 is a view showing a ball muscle in the horizontal direction of the ball.
FIG. 31 is a view for explaining a ball muscle in a square face.
FIG. 32 is a plan view illustrating a ball muscle in a square face.
FIG. 33 is a view for explaining a ball muscle in an open face.
FIG. 34 is a plan view illustrating a ball muscle in an open face.
FIG. 35 is a view for explaining a ball muscle in a closed face.
FIG. 36 is a plan view illustrating a ball muscle in a closed face.
FIG. 37 is a plan view showing the overall configuration of the golf impact image learning tool according to the present invention.
FIG. 38 is a side view of the same.
FIG. 39 is a plan view showing a pseudo ball.
FIG. 40 is a diagram showing a group of club head attachments for acquiring an image of a function called a loft.
FIG. 41 is a diagram showing a group of club head attachments for acquiring an image of a function of face orientation.
FIG. 42 is a view showing a wood attachment.
FIG. 43 is a view showing an iron attachment.
FIG. 44 is a plan view showing a launch body of a pseudo ball by the golf impact image acquisition tool.
FIG. 45 is a diagram showing an impact image when the loft angle is zero degrees.
FIG. 46 is a diagram showing an impact image when the loft angle is 10 degrees.
FIG. 47 is a diagram showing an impact image when the loft angle is 30 degrees.
FIG. 48 is a view showing an impact image when the loft angle is 45 degrees.
FIG. 49 is a view showing an impact image at the time of a square face.
FIG. 50 is a view showing an impact image at the time of an open face.
FIG. 51 is a view showing an impact image at the time of a closed face.
FIG. 52 is a view showing an impact image when hit with a neck side.
FIG. 53 is a view showing an impact image when hit with a toe side.
FIG. 54 is a view showing a golf impact image acquisition tool for acquiring an image of a thrust force.
FIG. 55 is a view showing an operation image of a thrust force.
FIG. 56 is a view showing the world of golf centered on swing theory.
FIG. 57 is a view showing the world of golf in which impact is scientifically recognized.
[Explanation of symbols]
θ face angle
F face side
P club head attachment
11 pseudo ball
30 Golf Impact Image Acquisition Tool
31 Slide bar
31a Socket part
32 rails
33 String elastic body
36 Body (Golf impact image acquisition tool)
55 magnet
56 body (club head attachment)

Claims (5)

A golf impact image learning tool comprising a main body, a slide bar slidably provided on the main body, a club head attachment detachably fixed to an end of the slide bar, and a pseudo ball. The golf impact image learning device according to claim 1, wherein an elastic body is provided between the main body and the slide bar. The golf impact image learning device according to claim 1 or 2, wherein the hit surface of the pseudo ball of the club head attachment is a face surface, and the face surface is inclined in a plan view. The golf impact image learning tool according to any one of claims 1 to 3, wherein a magnet is fixed to the club head attachment, and a socket made of an iron material is provided at an end of the slide bar. The club head attachment comprises a base fixed to an end of the slide bar and a head attached to the base via a stay, and the stay supports a center of gravity of the head. 4. The golf impact image acquisition tool according to claim 4.

Images