WO2022230764A1

WO2022230764A1 - Golf insole

Info

Publication number: WO2022230764A1
Application number: PCT/JP2022/018517
Authority: WO
Inventors: 菅田貴司
Original assignee: МｕｇｅｎＢｉоｎｉｃ株式会社
Priority date: 2021-04-27
Filing date: 2022-04-22
Publication date: 2022-11-03
Also published as: JP2022169415A; US20240206593A1

Abstract

Provided is an insole which promotes rotation and the maintenance of a tilt angle of a motion axis, which is an axis of rotation of the inner side of both feet, during a golf swing. The thickness of a big toe root part (A) of the insole is made lowest, and then a heel inner part (B), a heel outer part (C), and a little toe root part (D) are gradually increased in thickness to maintain the tilt angle of the motion axis during a swing, which prevents the balls of the feet from rising up due to centrifugal force caused by the swing, thereby suppressing movement of the center of gravity position to the small toe side, and smoothly promoting rotation originating at the balls of the feet.

Description

insole for golf

The present invention relates to an insole that supports the maintenance of the inclination angle of the motion axis and the rotation of the motion axis during a golf swing.

Missed shots that occur in golf include slices where the ball curves sharply to the right, hooks which curve sharply to the left, and hitting the top of the ball with the head of the golf club (the part that hits the ball at the tip). There is such a thing as duffling.

There are various causes, but the most important and basic factor is the inability to maintain the tilt angle of the movement axis using the inner thigh adductor muscle group and its rotation smoothly, or to achieve an appropriate tilt angle. It is a big deviation.

The proper inclination angle of the medial axis of motion of the right foot (for a right-handed person) from the backswing to the top (apex) after the start of the swing is an imaginary line extending vertically from the ground at 0 degrees as shown in Figure 1. , it is about 5 to 10 degrees clockwise when viewed from the front.

Also, the proper inclination angle of the inner movement axis of the left foot (for a right-handed person) from the downswing that swings the club down to the follow is assuming that the angle of the imaginary line extended vertically from the ground is 0 degrees, as shown in Figure 2. , about 7 to 8 degrees counterclockwise when viewed from the front.

In other words, in order to prevent miss shots in golf, it is necessary to maintain an appropriate inclination angle of 5 to 10 degrees and smooth rotation of the right foot from the backswing to the crosscut, and an appropriate inclination angle of the left foot of 7 to 8 degrees from the downswing to the follow. maintenance and smooth rotation.

In order to maintain the tilt angle of the movement axis and rotate smoothly, it is necessary to rotate using the adductor muscles. However, in daily life, the adductor muscle is not used much, so its muscle strength tends to decrease, and it is the muscle that weakens the most with age. As a result, the adductor muscle cannot withstand the centrifugal force of the swing, the ball of the foot lifts, and the weight shifts toward the little finger, making it difficult to maintain an appropriate tilt angle of the axis of motion.

Therefore, Patent Document 1 discloses that the ball of the left foot (for a right-handed person) is shaped like a mortar in order to smoothly rotate the axis of motion.

Further, Patent Document 2 discloses that the lateral portion of the heel is raised to shift the weight to the toe portion.

Furthermore, Patent Document 3 discloses that the outer side of the sole is higher than the inner side of the sole for the purpose of correcting the swing form.

Patent document 1: JP 2021-62164
Patent document 2: JP 2018-114271
Patent document 3: JP-A-8-228802

Patent Literature 1 states that making the ball of the left foot into a bowl shape can promote smooth rotation. However, the ball of the foot becomes the starting point of the rotation axis, but in order to do so, it is necessary to bend and step on the ground of the thumb connected to the ball of the foot, and the sinking of the ball of the foot hinders this. Seem. In addition, in order to maintain the tilt angle of the left foot movement axis and rotate around the ball of the left foot, the tilt angle of the movement axis of the right foot and the tension of the ball of the right foot have a large effect. Measures against the ball of the foot are also necessary.

In Patent Document 2, by making the lateral heel portion higher than the medial heel portion, the lateral movement of the calcaneus is suppressed and the weight is shifted to the toe side, but the little toe side of the sole is lower. As it is, the center of gravity position tends to move to the pinky side due to the structure of the foot, and it seems to be an insufficient solution.

In Patent Document 3, simply raising the outer side of the sole higher than the inner side is expected to limit the range of motion of the ankle and shift the weight to the inner side of the heel, thus reducing the weight shift to the ball of the foot. I don't think it will go smoothly.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide an insole that maintains an appropriate inclination angle of the left and right feet to prevent miss shots and allows smooth rotation of the movement axis.

A golf insole according to the present invention is a pair of insoles to be inserted into the right and left sides of a golf shoe. It is characterized by being molded lower than

Further, the angle of inclination of the section E (from A to D) and the angle of inclination of the section F (from B to C) are substantially the same, and the inclination angle is 4 to 8 degrees. By making the inclination angles the same, D becomes higher than A, B, and C, and lifting of the ball of the foot and weight shift toward the little finger can be suppressed.

Further, the thickness of the thumb base portion A, the inner heel portion B, the outer heel portion C, and the little finger base portion D is gradually increased. The height difference between them is 2 to 5 mm between A and B, 5 to 10 mm between B and C, and 1 to 5 mm between C and D.

According to the present invention, the inclination angle of the inner movement axis of the right foot (for a right-handed person) from the backswing to the top and the inclination angle of the inner movement axis of the left foot (for the right-handed person) from the downswing to the follow-up are determined. can be stabilized.

In addition, the center of gravity moves easily to the ball of the left and right foot, making it easier to flex and step on the ground of the thumb that supports it, making it easier to swing smoothly, stably, and powerfully.

It shows an appropriate inclination angle of the motion axis during the backswing of golf. Assuming that the angle of the line extending vertically from the ground is 0 degree, the appropriate tilt angle is approximately 5 to 10 degrees clockwise. It shows the appropriate inclination angle of the motion axis in the follow from the downswing. Assuming that the angle of the line extending vertically from the ground is 0 degree, the appropriate tilt angle is approximately 5 to 8 degrees counterclockwise. Too large or too small of these values can cause trouble shooting. The positional relationship between the plan view of the present invention, the positions of the thumb base portion A, the heel inner portion B, the heel outer portion C, the little finger base portion D, and the cross section E from A to D and the cross section F from B to C. Sectional drawing of the cross section E and the cross section F of FIG.

In this embodiment, an example of the shape and material of a pair of insoles of the present invention to be mounted in golf shoes will be described.

Taking the average size of men's insoles of 25.5 cm as an example, if the angle of inclination of section E and section F in Fig. 3 is 5 degrees, the thickness of the base of the thumb A is 3 mm, and the thickness of the inner side of the heel B is 6 mm. , the outer heel portion C is 12.7 mm, and the base portion D of the little finger is 13.6 mm.

In order to prevent collapse of the inclination angle, the base material of the insole is made of hardening ethylene vinyl acetate or polyurethane material. Also, in order to reduce fatigue, an elastic urethane material is attached to the intermediate portion of the insole, but the thickness of the material at the base of the thumb A is thin. In addition, synthetic fibers such as polyester and nylon are attached to the surface so that the toes can easily grip due to frictional resistance. The sum of the multi-layer structure is adjusted to the value of step 0023.

A: Base of thumb B: Inner side of heel (thumb side)
C Lateral part of the heel (little finger side)
D Little finger base E Section E (section line from A to D)
F Section F (section line from B to C)

Claims

This pair of insoles for golf is characterized in that the thickness of the base of the thumb (A) is lower than that of the inner heel (B), the outer heel (C) and the little finger base (D).
2. An insole according to claim 1, wherein the thickness of the insole gradually increases from the base of the thumb (A), the inner heel (B), the outer heel (C), and the little finger base (D).
An insole in which the thickness of the insole at the base of the thumb (A) is 10 mm or more lower than that at the base of the little finger (D).
2. The insole according to claim 1, wherein the angle of inclination from the base of the little finger to the base of the thumb (section E) is the same as the angle of inclination from the outer heel to the inner heel (section F).