JPH049552B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides that the club head of a golf swing is always horizontal with the ball at the center in the impact zone during the trajectory from the takeback through the downswing to the follow-through, and the target and the direction of the ball are parallel. This invention relates to a swing practice device for a golf swing practice table, which is necessary for learning a new swing method that maintains a straight line and always makes an accurate square impact on a golf ball.

In order to hit a golf ball straight, you need to have a good grip, good stance, and good address as ``static'' motions, and then swing the ball correctly on the trajectory that is ``moving''. It is generally said that there are three types of club head swing trajectories, as shown in FIGS. 1a to 1c. That is, a is outside-in,
b stands for inside-out, c stands for inside-in, and it is thought that a and b are inappropriate and that professional golfers and advanced golfers use swings like c, and there are practice mats available on the market for swinging like this. has been done. However, golfers are well aware that it is extremely difficult to master the inside-in swing of c and to correctly align the hitting direction P of the circular trajectory of the club head 21 with respect to the ball 20 with the target direction Q. This is the place to do it. Therefore, the inventor of the present invention developed the playground track shown in FIG. 2 based on the idea that it would not be difficult to hit the golf ball 20 straight in the impact zone by hitting the golf ball 20 in a straight line. He has already developed and proposed a new swing method that swings the club head in a straight line. The present invention has developed a swing determination device for this purpose.

The main points of the swing method proposed above are as follows.

The golf swing can be broadly divided into two types: the take back swing and the back swing.

To perform a takeback, first step in the direction of the arrow after address in Figure 2, firmly pressing your feet from the base of your left and right big toes to the arches of your feet and determining the center line of your body.

The first movement is to pull only the arms 35 to 70 cm backward without moving the shoulders or breaking the triangular shape of the left and right arms, so that the club head 21 is in a linearly retreating position. At this time, the club head 21 is 80 to 100 cm.
, and then reach the limit where you have to turn your shoulders.

The second movement is to rotate the shoulders and hips, keep both arms in a triangular shape, and swing the club up to the top while swishing the left wrist, completing the takeback. At this point, his shoulders are rotated 90 degrees, his back is facing the direction of the ball, his hips are twisted 45 degrees, his left knee is close to his right knee, and about 90% of his weight is on his right leg. However, even in this big backswing, the center line from the base of the back of the neck to the coccyx at the bottom is firm and grounded, as the area from the base of the big toe of the right foot to the arch of the foot is grounded firmly. It is held in its original position and the position of the head is not in a swaying position.

Next, enter the downswing. The third movement begins with a slight kick to the base of the big toe of the right foot while simultaneously moving the right hip, and at the same time, the left knee is also forcefully moved horizontally to the left and parallel to the batting line. However, due to this parallel and horizontal movement, a large and powerful rotation of the shoulder, which has been twisted by a large 90°, begins. Then, while maintaining the grip, the arms, which are relaxed, enter the impact zone as shown in Figure 2, with the arms remaining in a triangular shape.

By maintaining the above posture, the club head will take a straight course before entering the impact zone, and your left wrist will naturally release its grip just before impact, allowing you to deliver a powerful impact punch to the golf ball. As it continues, it enters the follow-through, and the rotational force changes due to acceleration due to centrifugal force, causing the hips to suddenly rotate and reach the finish. At this time, the centrifugal force of the club head also causes the right knee to be sent about 30 cm to the left side, and it comes to be diagonally aligned with the left knee.
The club head can swing a long distance of about 60 to 80 cm, including the impact zone, while keeping the trajectory of the follow-through zone straight.

This kind of swing method was proposed by the present inventor for the first time, and all known hitting methods, including the American hitting method, involve unscrewing the hips to move inside as shown in Fig. The best technique is to switch points by turning the wrist to follow-through and hit in a straight line, and it was an extremely difficult technique to master.

The present invention was developed in order to effectively learn the new swing method described above in a short period of time. It is something that we try to understand. Its structural feature is that it consists of a sounding body A and a sounding body B attached to the follow-through tip of a conventionally used rectangular golf mat long in the swing direction, and the sounding body A is the follow-through tip of the golf mat. The sounding body B is a concave cross-section body fixed on a support plate extending from the sounding body B, and the sounding body B is a concave cross-sectional body that is pivotally connected to the sounding body A at the rear and has a concave cross-section that matches the sounding body A. The device is characterized in that a protrusion 6 is provided at the tip of the sounding body A or B.

This will be explained in detail below with reference to the drawings.

FIG. 3 is a perspective view of the swing determiner, and the fourth
The figure is an enlarged view of the center longitudinal section. FIG. 5 is a plan view of the swing determiner portion, and FIG. 6 is a central vertical sectional view. FIG. 7 is a plan view of the sounding body A.

As seen in these figures, the swing determiner of the present invention consists of a sounding body A and a sounding body B attached to the follow-through tip 2 of a rectangular golf mat 1 that is long in the swing direction. is equipped with a regular artificial turf flocked surface. The objective is to find out whether the club head is swung correctly in a straight line from the impact zone to the follow-through zone by making sounds. An iron impact pin 3 and a driver impact pin 4 are removably provided in the impact zone. The driver impact pin 4 is a short iron impact pin with a long hollow rubber pipe inserted into the hollow part and projected. The sounding body A has a shape as shown in FIGS. 6 and 7, and is a concave cross-section body fixed on a support plate 5 extending from the follow-through tip of the golf mat. A protrusion 6 is provided at the tip, and a pivot hole 7 is provided at the rear. The protrusion 6 has the same effect even if it is on the sounding body B side. The recess 8 provided in the center is for enhancing the sounding effect as will be described later. Pronunciation body B is shown in Figure 5~
As seen in FIG. 6, it has a concave cross-section that matches the shape of the sounding body A, and a pivoting protrusion is provided at the rear. One end of a spring 10 is fixed to the rear of the sounding body B, and the other end of the spring 10 is fixed to the support plate 5. In this way, the rear part of the sounding body B is supported, and the sounding body B is normally in an inclined state with the front side upward.
A distinctive upright elastic body 11 is provided on the upper surface of the sounding body B. The upright elastic body 11 is a rubber elastic body, and when hit by a golf club, it bends as shown by the two-dot chain line in FIG. 4 and tilts the sounding body B toward the sounding body A side. If the upright elastic body 11 is damaged as shown in FIG. 6, it has a structure that can be easily replaced by simply inserting it into the insertion hole from below the sounding body B and pulling it upward.

According to the swing judgment device equipped with sounding body A and sounding body B as described above, when the club head is swung correctly and comes in a straight line, the upright elastic body 1
1 leans forward and normally hits the sounding body B against the sounding body A, producing a loud hitting sound. However, when the club head enters from the outside or the inside, the force of the club head is absorbed by the elasticity of the upright elastic body 11, and no good sound is produced. The sound made when the swing is made correctly is similar to the sound made when a castanet is struck. This is largely due to the recesses 8 and 12 provided in the sounding bodies A and B. Furthermore, because of the provision of the protrusion 6, if the club head is not swung correctly, the sounding body B will tilt and hit the sounding body A, making it impossible to produce a good sound. In addition, the pronunciation body B
By embedding sound absorbers such as rubber pieces 22 on the left and right sides of the contact area of the protrusion 6 of the sounding body A, the hard part 23 in the center will hit the protrusion 6 and produce sound only when the follow-through is normal, which will prevent inaccurate swings. Sometimes the rubber piece 22 hits the protrusion 6 and no sound is produced, so a more reliable judgment can be made.

According to the swing judgment device for the golf swing practice table having the structure described in detail above, it is possible to judge whether the swing is good or bad based on the state of sound produced, and by practicing using this device, it is possible to A precise square impact effect can be obtained.

[Brief explanation of drawings]

1A to 1C are schematic plan views showing a conventional swing pattern, and FIG. 2 is a schematic plan view showing a swing pattern which is the basis of the present invention. 3 to 7 are illustrations of the present invention, in which FIG. 3 is a perspective view of the swing determination device, and FIG. 4 is an enlarged view of the central longitudinal section. FIG. 5 is a plan view of the swing determiner portion, and FIG. 6 is a longitudinal sectional view at the center thereof. FIG. 7 is a plan view of the sounding body A. 1...Golf mat, 2...Follow-through tip,
3...Pin for iron impact, 4...Pin for driver impact, 5...Support plate, 6...Protrusion, 7...
Pivot hole, 8, 12... recess, 9... pivot protrusion, 10...
Spring, 11... Erecting elastic body, 20... Golf ball,
21...Club head, 22...Rubber piece, 23...Hard part.

Claims (1)

[Claims] 1 Consists of a sounding body A and a sounding body B attached to the follow-through tip of a rectangular golf pine long in the swing direction, and the sounding body A is a concave section body fixed on a support plate extending from the follow-through tip 2 of the golf pine. The sounding body B is a concave cross-section body that matches the sounding body A, which is pivotally connected to the sounding body A at the rear thereof, and an upright elastic body 11 is provided on the upper surface of the sounding body B,
A swing determiner for a golf swing practice table, characterized in that a protrusion 6 is provided at the tip of the sounding body A or B.