JPH049065B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides that the club foot of the 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 to each other. The present invention relates to a golf swing practice mat 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. 7a to 7c. 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 24 with respect to the ball 23 with the target direction Q. This is the place to do it.

Utility Model No. 13613/1973 shows a golf practice device for the purpose of practicing swinging without taking your eyes off the ball.It has a convex part that the ball hits, and when the ball hits this, it rises up. A device has been proposed that allows the player to get into the habit of looking at the ball until the moment it is hit, which allows players to check the colored marks on the back and the lighting inside. However, according to this device, the angle of the ball hitting the convex part does not really matter; even if the direction is slightly different, if it hits the ball, it will rise and you can see the colored mark on the back and the internal lighting, so you can see whether the swing is good or bad. It is difficult to make a delicate judgment.

Furthermore, Japanese Utility Model Publication No. 55083/1983 has a structure in which the first or second spring plate makes a sound when the club hits it, but this is completely different from the present invention in that the trajectory drawn by the club head is corrected. In this example, the angle of the hitting club doesn't really matter; even if the direction is slightly different, if it makes contact, it will make a sound.

In Japanese Patent Publication No. 48-32716, a gate element is used to close the switch, but this is because the first gate is activated to instruct the golfer whether or not he or she has exercised at the optimal speed. Then,
This is for measuring the period from when the time measuring device operates to when the second gate operates. It does not have the function of accurately determining whether the swing is good or bad based on the state of sound produced depending on the direction of the hit.

Therefore, the inventor proposed that if the golf ball 23 is struck in a straight line in the impact zone,
Based on the idea that it is not very difficult to hit the ball straight, we developed a new swing method that swings the club head in a straight line, using a swing similar to the playground track shown in Figure 8. He developed and proposed a judger.

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 8, 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 back 35 to 70 cm without moving the shoulders or breaking the triangular shape of the left and right arms, so that the club head 24 is in a linearly retreating position. At this time, the club head 24 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 swinging the left wrist, at which point the takeback is completed. At this time, the shoulders rotate 90 degrees, the back faces the direction of the ball, the hips twist 45 degrees, the left knee is brought to the right knee, and the right leg is rotated approximately 90%.
weight is on it. However, even in this big backswing, since you are firmly grounded on the inside of your right foot from the base of your big toe to the arch of your foot, you will be able to maintain firm ground from the base of the back of your neck to the bottom of your foot.
The center line across the bones is firmly 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 8, keeping the shape of a triangle.

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 in all known hitting methods, including the American hitting method, the ball's impact is achieved by unscrewing the hips to move inside as shown in Figure 7c. 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 is particularly useful for effectively learning the above-mentioned new swing method in a short period of time, and is particularly useful for learning the above-mentioned new swing method in a short period of time. , converts it into a text display, audio display, etc. in order to know the hitting condition. Its structural feature is that a fixed piece and a striking piece are provided at the follow-through tip of the conventionally used rectangular golf mat that is long in the swing direction.
An upright elastic body 22 is provided on the upper surface of the striking piece 4, and a protrusion 16 having an electric contact 10 is provided on the lower surface of the tip, and the position where the electric contact 10 comes into contact with the fixed piece 3 when the upright elastic body 22 is hit with a golf club. A plurality of electrical contacts 8a to 8c are provided at the electrical contacts 8.
The striking state is notified by energizing a to 8c by selectively contacting the electrical contacts 10 of the striking piece 4 with sound, light emission, character display, etc.

The present invention will be explained in detail below with reference to illustrative drawings.

FIG. 1 is a perspective view of a golf swing practice mat according to the present invention, and FIG. 2 is a plan view of a hitting piece. FIG. 3 is a plan view of the fixing piece. Figure 4 is a sectional view taken along line X-X in Figure 2, and Figure 5 is a cross-sectional view taken along line Y-X in Figure 2.
It is a Y section sectional view. FIG. 6 is a longitudinal sectional view of the tip of another example of the striking piece.

As seen in these figures, the golf swing practice mat of the present invention consists of a fixed piece 3 and a striking piece 4 attached to the follow-through tip 2 of a rectangular golf mat 1 long in the swing direction. The surface is covered with regular artificial grass. The purpose is to use an electrical display to determine whether the club head is swung correctly in a straight line from the impact zone to the follow-through zone. An iron pact pin 5 and a driver impact pin 6 can be removably provided in the impact zone.

The fixing piece 3 has a shape as shown in FIGS. 3 to 5, and is a concave section fixed on a support plate 7 extending from the follow-through tip of the golf mat. Three electrical contacts 8a, 8b, 8c are provided at the tip of the electrical contacts 8a, 8b, 8c.
are each connected to a display device 9 on the side of the golf mat. The display device can be attached to the wall or other suitable location in addition to the side of the mat. In this example, the electrical contact 8b is located in the center, and when the club head is correctly swung straight from the impact zone to the follow-through zone, the electrical contact 10 provided on the protrusion at the tip of the striking piece 4 comes into contact. Electrical contacts 8a, 8c on both sides
is a portion that comes into contact with the electric contact 10 provided on the striking piece 4 when an outside-in or inside-out swing is made. A pivot projection 11 is provided at the rear of the fixed piece 3, and a hole 12 is also provided. The recess 13 provided in the center is for enhancing the sounding effect of the electrical contacts, as will be described later. There are elongated spring holes 1 on both sides of the fixed piece 3.
4 and 14 are provided, and the rear end of the spring fitting elongated hole 14 forms a spring fitting groove 15.

As shown in FIGS. 2, 4, and 5, the striking piece 4 has a concave cross-section that matches the fixed piece 3, and the above-mentioned electric contact 8 of the fixed piece 3 is provided at the tip.
Protrusions 16 are provided at positions corresponding to a, 8b, and 8c, and the ends thereof serve as electrical contacts 10. A protrusion receiving hole 17 is provided at the rear thereof. Furthermore, a locking protrusion 18 is provided at the rear thereof. A spring fitting elongated hole 19 similar to that of the fixed piece 3 and a spring fitting groove 20 following this are provided on the side of the striking piece 4 as well.

The spring fitting elongated holes 14 and 19 of the fixed piece 3 and the striking piece 4 as described above and the spring fitting groove 1 following these.
A spring body 9 is fitted into 5 and 20. As is clear from FIG. 4, the spring body 9 has a structure in which one open end side has elastic support portions 21 with narrow intervals, and a constricted portion 22 in the middle. As seen in the figure, the bullet support portion 21 is resiliently supported behind the pivot projection 11 and the projection receiving hole 17, which are the pivotal connection portions of the fixed piece 3 and the striking piece 4. With such a structure, the fixed piece 3 and the striking piece 4 are elastically supported at the rear, and are normally in an inclined state with the front open and the rear closed. Since the striking piece 4 exhibits elasticity when struck, the spring body 9 is durable without being subjected to strain. If the spring body has such a structure, even when the fixed piece 3 and the striking piece 4 are to be disassembled for repair or the like, they can be easily removed by simply pulling the spring body 9 forward. It's convenient.

An upright elastic body 22 is provided on the upper surface of the striking piece 4. The upright elastic body 22 is a rubber-like elastic body, and when hit by a golf club, it bends as shown by the two-dot chain line in FIG.
Push it to the side. As shown in FIG. 5, the upright elastic body 22 has a structure that can be easily replaced if it is damaged by simply inserting it into the insertion hole from below the striking piece 4 and pulling it upward. FIG. 6 shows another example of a structure in which the striking piece 4 is tilted by hitting it.
Even if the striking piece 4 is provided with such a protrusion 25, the same effect as that of an upright elastic body can be obtained.

According to the golf swing practice mat provided with the fixing piece 3 and the hitting piece 4 as described above, when the club head is swung correctly and comes in a straight line,
While the erecting elastic body 22 is tilting forward, the protrusion 16 of the blower 4
The electric contact 10 provided on the fixed piece 3 is tapped against the electric contact 8b of the fixing piece 3, thereby indicating that it is straight or the like. When the club head enters from the outside or the inside, the upright elastic body 22 is struck diagonally, so the striking piece 4 is twisted as shown by the two-dot chain line in FIG. The contact point 8a8c is struck to indicate in or out. By having multiple electrical contacts and connecting each of the multiple contacts to an electrical display device or voice device, you can check whether the club head is swinging correctly, etc.
Out, in, and the number of times these rolls have been made can be known through display or vocalization.

According to the golf swing practice mat having the structure detailed above, it is possible to judge whether the swing is good or bad by vocalization or electrical display, and by practicing using this device, it is possible to judge whether the swing is good or bad. A precise square impact effect can be obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the golf swing practice mat, and FIG. 2 is a plan view of the hitting piece 4. Third
The figure is a plan view of the fixing piece 3. 4 is a sectional view taken along the line XX in FIG. 2, and FIG. 5 is a sectional view taken along the line YY in FIG. FIG. 6 is a longitudinal sectional view of the tip of another example of the striking piece 4. FIG. 7 is a schematic plan view showing a conventional swing pattern, and FIG. 8 is a schematic plan view showing a swing pattern that is the basis of the present invention. DESCRIPTION OF SYMBOLS 1... Golf mat, 2... Follow-through tip, 3... Fixed piece, 4... Hitting piece, 5... Pin for iron impact, 6... Pin for driver impact, 7... Support plate, 8, 10... ...Electric contact, 9... Spring body, 11... Pivoting projection, 12...
Hole, 13... recess, 14, 19... spring fitting elongated hole, 15, 20... spring fitting groove, 16... protrusion,
17... Protrusion receiving hole, 18... Locking protrusion, 21...
Bullet holding part, 22... Constriction part, 23... Ball, 24
...Club head, 25...protrusion.

Claims (1)

[Claims] 1 A fixed piece 3 and a striking piece 4 are provided at the follow-through tip of a golf mat, an upright elastic body 22 is provided on the upper surface of the striking piece 4, and a protrusion 16 having an electrical contact 10 is provided on the lower surface of the tip, and the upright elastic body 2
A plurality of electrical contacts 8a to 8c are located at positions where the electrical contacts 10 contact the fixed piece 3 when the electrical contacts 10 are hit with a golf club.
A striking piece 4 is provided for the electrical contacts 8a to 8c.
A golf swing practice mat characterized in that the golf swing practice mat is characterized in that the batting condition is notified by converting it into vocalization, light emission, character display, etc. by energization by the selected contact position of the electric contact 10.