JP2597389B2 - Golf club selection method - Google Patents

Description

The present invention relates to a golf club selection method. In more detail, it is necessary to select a golf club that gives the longest flight distance in all counts and that can prevent miss shots such as hooks and slices according to the individual golfer's physical strength, experience, habit, etc. How to do.

[Problems to be Solved by Conventional Techniques and Inventions] The golf population has been steadily increasing with increasing leisure and interest in leisure, and various golf clubs have been researched and developed accordingly.

Golf clubs currently have a shaft length,
It is manufactured taking into account items that are measured statically, such as balance, overall weight and shaft flexibility.

However, the flexibility of the conventional shaft is measured by fixing the thicker part (hand part) and applying a constant load to the thinner part (tip part) to measure the amount of deflection of the shaft. There is a problem.

The displayed value is too wide and inaccurate. That is, the highest value (for example, the softest item) of a certain rank and the lowest value (the hardest item) of the next higher rank (somewhat soft) may overlap.

Since it is a measurement value of the shaft alone, when assembled as a club, the flexibility of the shaft changes depending on the weight of the club head.

This is a measurement of only the shaft in the stationary state, and cannot evaluate the flexibility in the dynamic state when actually swinging the club.

Therefore, when selecting a golf club, the indication of the flexibility is a tentative indication, but the actual selection is based on the grip of the golf club at the store, the grip of the golf club, the balance between the head and the shaft, and the like. It was carried out exclusively with Kang, and was never scientifically rational. As a result, the golfer selects a golf club that does not match his or her swing characteristics, and the golf does not improve as expected.

When using a golf club that does not match your swing characteristics, not only does the flight distance not increase, but you can not make accurate shots with hooks and slices for the following reasons, resulting in a score increase. It cannot be stretched.

That is, the flight distance of the golf ball increases in proportion to the club head speed, and this head speed becomes maximum when the shaft is straightened in a certain swing. Therefore, it is an ideal state that the shaft is straightened at the moment when the ball is impacted, and at this time, an accurate shot without a hook or slice is obtained with the longest flight distance.

If a golfer does the same swing in a club that is too soft, the maximum head speed will be reached after impact, not only will the flight distance decrease, but the timing will not match and hooks and unexpected mistakes Causes a shot. On the other hand, if a club that is too hard is used, the impact will occur after the maximum head speed has been exceeded, so that the flying distance will be reduced and miss shots such as slicing will occur.

As described above, the relationship between the degree of softness of one golf club and the matching of the swing characteristics has been described. More importantly, the golf uses a plurality of types of golf clubs at different distances or under different ball conditions (roughly, All clubs need to match the swing, not just a single club. Otherwise, the golfer would have to change his swing to match the club to get the correct shot, and in such a situation golfing would never be better.

It is an object of the present invention to provide a method capable of appropriately selecting a golf club that exactly matches an individual golfer in view of the circumstances described above.

[Means for Solving the Problems] The method of selecting a golf club according to the present invention includes gender, age, golf history, number of rounds, number of practice, sports history, height,
Analyzing the golfer's swing characteristics based on weight, grip strength, handicap, head speed, round stroke, driver's flight distance, 5 iron's flight distance and ball streak, determine the optimal natural frequency for the golfer, At the moment of impact, the golf club enters a quarter cycle at the moment of impact from a golf club whose natural frequency has been measured in advance by an appropriate device so that the golf shaft is straightened and the maximum head speed can be obtained. A method of selecting a golf club, wherein the analysis of the swing characteristics is based on the data on the respective items and the optimal natural frequency of various golfers prepared in advance, and weights each item. It is characterized in that the optimum natural frequency is determined by executing while performing.

Example Next, a method for selecting a golf club of the present invention will be described in detail.

In the method of the present invention, the flexibility of the shaft is represented by a natural frequency (cpm = cycle per minute). This natural frequency is a numerical value that expresses the flexibility of the shaft during the actual swing instead of the one-minute cycle motion. It is measured as a tool (golf club).

The measurement of the natural frequency may be performed by fixing the thick end (grip side) of the shaft, giving a runout to the head, and using an appropriate frequency measuring device using an optical sensor or the like, and is not particularly limited in the present invention. Not something.

Next, the relationship between the natural frequency and swing will be described with reference to the drawings. FIG. 1 is a diagram showing the natural frequencies of three types of No. 1 wood (driver), and FIG. 2 is an explanatory diagram showing a situation when the golf club swings. In FIG. 1, the waveform is exaggerated for easy understanding, and the waveform is different from the actual difference.

Here, assuming that the club of (B) is a club that can make the best match, (B) impacts the ball when it is indicated by (a) in FIG. 1, that is, when the shaft is straight. Will be.
In other words, the time zone from the top to the impact exactly matches the quarter period of the golf club (see FIGS. 3a to 3c). FIG. 3a and FIG.
4a and 5a show the hitting surface, FIG. 3b and FIGS. 4b and 5b to be described later show the impact as viewed from the side,
FIG. 3c and FIGS. 4c and 5c to be described later show the impact viewed from above.

On the other hand, when the same golfer hits the ball with the club (A), the head speed becomes maximum after the impact (that is, the shaft vibration immediately reaches a quarter cycle), and therefore the flight distance is It does not come out, and it also causes miss shots such as hooks. The circumstances during this time are shown in FIGS. 4a to 4c. It is understood from FIG. 4c that the hitting surface is deviated from the center.

On the other hand, when the same golfer hits the ball with the club (C), the head speed becomes maximum before the impact (that is, the vibration of the shaft is suppressed to a quarter cycle and straightened), and therefore, the flight distance does not appear. And miss shots such as slices. The situation during this time is also shown in FIGS. 5a to 5c.

Thus, it is extremely important to select a golf shaft that exactly matches the swing of each person in order to increase the flight distance and perform an accurate shot. In the present invention, the golfer's gender, age, golf history, and number of rounds (for example, month, month, etc.) are determined in order to elucidate the optimal natural frequency (frequency at which the shaft is straightened at the moment of impact). How many times do you play in the field), the number of exercises (for example, how many hours you practice in a week), sports history, height, weight, grip strength, handicap, head speed, round stroke, driver distance, 5 irons The golfer's swing characteristics are analyzed based on the flight distance and ball streak. Specifically, based on data on the items and the optimum natural frequencies of various golfers, each item may be weighted, and a program may be used such that the optimum natural frequency is calculated based on the data. That is, the above items (sex, age, weight, grip strength, etc.) for various golfers
In advance, data relating to the optimal natural frequency of the golfer (in other words, the time from the top to the impact) separately determined by, for example, actually swinging is prepared in advance. Then, for each item, the relationship between the item and the optimum natural frequency is determined based on the accumulated data. Such a relationship can be summarized, for example, in the form of a linear expression. That is, for example, the optimal natural frequency F (W) of a person weighing W is obtained in the form of F (W) = αW + β (where α and β are constants).

Then, the strength of the correlation between each item and the optimal natural frequency (for example, the correlation between the weight and the optimal frequency is weak,
The strength of the correlation is determined when determining the relationship between each item and the optimum natural frequency, for example, the correlation between the handicap and the optimum natural frequency is strong. Make a connection. That is, for the sake of simplicity, if it is assumed that the optimum natural frequency is obtained using three items (W, X, Y), it is difficult to simply divide F (W) + F (X) + F (Y) by three. Instead, the above three items are weighted. If the item X has a strong correlation with the optimum natural frequency, for example, a = 0.5, b = 0.2, c = 0.3
Equation (aF (W) + bF (X) + cF) where (a + b + c = 1)
The optimum natural frequency is obtained by (Y).

On the other hand, regarding golf clubs, if various characteristics such as length, weight, balance, etc., including natural frequency, are input in advance, a golf club that best matches an individual golfer can be automatically selected. .

If one of the plurality of clubs is selected (for example, a 5-iron), the other clubs are automatically selected by modifying the value of the optimum natural frequency according to the change in the club length. can do. That is, when the club number is plotted on the horizontal axis and the natural frequency of the club is plotted on the vertical axis, the optimal natural frequency of each club is displayed as a straight line (optimum line).

The concept of the present invention is effective not only when a golf club is newly selected, but also when the currently used golf club is adjusted to an optimum one.

Golfers usually have a club that they are best at, and others that are good at it. A good club is a club deviating from the line representing the optimum natural frequency, and is too hard (the natural frequency is higher than the optimum natural frequency) and too soft (the natural frequency is the optimum natural frequency). (Less than the number). In this case, measure the natural frequency of the club that you are best at (it should match the optimal natural frequency), draw a line representing the optimal natural frequency based on this value, and By refurbishing or replacing to be on the line, the club currently in use can be adjusted to the club that best matches its own swing characteristics.

As described above, the present invention makes it possible to provide a golf club suitable for each golfer, and each golfer can play using a club suitable for his body and habit. Therefore, not only the flight distance is increased, but also the shot is accurate, and the score can be greatly reduced. The important thing is that all clubs are tuned for maximum head speed at impact, so golfers only have to hit the ball with the same swing and have to change swings from club to club. Can be eliminated at once. As a result, once a golfer has established his own swing, he can make a stable shot.

As described above, the method for selecting a golf club according to the present invention is extremely useful not only for golfers but also for dealers of golf clubs. In other words, by inputting the characteristics of the clubs in stores, it is possible to immediately select and provide golf clubs that match the user, which is extremely effective in sales strategies, and further registers customer information. If you leave
For example, when a new product is put on the market, there is an advantage that a detailed introduction that matches the customer (according to the customer's swing characteristics) can be introduced. If the manufacturer name, product name, and price are registered, appropriate inventory management can be performed.

[Effects of the Invention] As described above, according to the method of the present invention, it is possible to select a golf club that matches the swing characteristics of each golfer, to increase the flight distance, and to make mistakes such as slicing and hooking. The effect is that shots can be eliminated and the score can be greatly increased.

[Brief description of the drawings]

FIG. 1 is a diagram showing natural frequencies of three golf clubs, FIG. 2 is an explanatory diagram of a state of swinging a golf club, and FIGS. 3a to 3c are hitting a ball with a club having an optimum natural frequency. Explanatory diagram showing the situation when
FIG. 4c is an explanatory view showing a state when the ball is hit with a club that is too soft, and FIGS. 5a to 5c are explanatory views showing a state when the ball is hit with a club that is too hard.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takeshi Sato 157 Aramachi, Sendai City, Miyagi Prefecture (56) References JP-A-63-57070 (JP, A) JP-Sho 49-31918 (JP, B2) “Swing Science, '' Takashi Hokuni, published December 20, 1985, Shodensha Publishing, pages 88-101, and pages 102-130

Claims (1)

(57) [Claims] 1. Gender, age, golf history, number of rounds, practice times, sports history, height, weight, grip strength, handicap, head speed, round stroke, driver's flight distance, 5 iron's flight distance and ball streak By analyzing the golfer's swing characteristics based on the golfer, the optimal natural frequency for the golfer is determined, and the golf shaft is straightened at the moment of impact so that the maximum head speed can be obtained, using an appropriate device in advance. A method of selecting a golf club having a quarter period at the moment of impact from golf clubs whose natural frequencies have been measured, wherein the analysis of the swing characteristics is performed by various golfers prepared in advance. Based on the data on each item and the optimal natural frequency, and execute while weighting each item Selection of the golf club and determining the optimum natural frequency Te.