JPH0482578A - Carry setting device for ball driving club - Google Patents

Abstract

PURPOSE:To get a proper carry without relying on experience and skill and previously understand the degree of power of a driven ball in driving the ball by providing a weight body on a ball driving club to sense properly a centrifugal force corresponding to the carry and shown by the weight body. CONSTITUTION:A weight body 1 is axially supported by an elastic body 2 and elastic buffer body 3 with a stopper 6 as a support end of the elastic body 2. One electrode 7 of an electric contact is mounted to a part of a container 5 and the other paired electrode 8 is electrically connected by the movement of the weight body 1. An additional electrode 9 is provided in a position to be electrically connected by the further movement of the weight body 1. The electric contacts are interconnected according to the position of the weight body so that an operating body 10 produces sounds for example. The container 5 is provided with an adjusting screw 15 for setting a position when a centrifugal force acts on the weight body so that the positional relationship between an end face 17 of weight body 1, electrodes 7, 8 and 9 is adjusted by turning a dial 16. The dial 16 is graduated 18 and related to a position where the weight body 1 operates the electric contacts.

Description

DETAILED DESCRIPTION OF THE INVENTION An object of the present invention is to provide an effective means for making a golf ball fly an appropriate distance when hitting the ball with a ball hitting stick, such as a golf club.

"Industrial Application Fields and Conventional Technology" For example, when making a golf ball fly far away,
Golf clubs such as woods and irons, and golf clubs of the same type, have different overall lengths and so-called loft angles, and are set to provide different flight distances.This is well known, for example, in various golf magazines. be.

``Problem to be solved by the inventionj For example, when a golf ball is hit to cause it to fly, it is a physical phenomenon, and the speed of the batting stick at the time of hitting the ball, the initial velocity of the ball received from the batting stick, and the flight distance are There is a certain law, and it is possible to solve it using a mathematical formula, but the proof and details here are not directly related to the present invention, so we will not write them down and will only show the results.The flight distance of the ball in this case. S is represented by S=(2XV2Xtanθ)2G.

Here, ■ is the horizontal initial velocity of the ball, that is, the horizontal velocity of the ball hitting point of the ball hitting stick, tan θ is the loft angle of the ball hitting surface in the case of a golf club, and G is the earth's gravitational acceleration. On the other hand, with a batting stick, the human user must obtain the batting speed by rotating the ball by swinging his/her own arm. Now, when the person swings and rotates a batting stick, for example a golf club, for hitting a ball, the horizontal velocity (2) is expressed as (2)=ω×L. Here, ω is the rotational speed of swinging the golf club, and L is the total length of the human arm and the golf club, from the point of impact to the center of rotation of the human arm. be. Now, when considering the above-mentioned formula, the rotational speed ω performed by a human being is calculated using the above two formulas ω” = (SXG) ÷
(2xL"xtanθ). On the other hand, it is a well-known principle that centrifugal force always acts on a rotating body when it rotates, and the centrifugal force F is F - (WXRXω2) ÷
Represented by G. Here, W is the weight of the rotating object, R
indicates the distance from the center of rotation to the center of weight where centrifugal force acts. In other words, it shows that a certain law holds between the flight distance S of the golf ball, the rotational speed ω of the human arm, and the centrifugal force F.

This relationship can be expressed by the following relational expression.

F = (WXSXR) ÷ (2 x L2 x tanO) The above formula shows that there is a linear proportionality law between flight distance S and centrifugal force F, and the specifications of matters indicated by other symbols are determined. It can be seen that it is fixed and cannot be treated as a variable.

However, these represent mathematical relationships and usually vary somewhat depending on terrain, weather, physical strength, individual differences, etc. Although the position difference in this case inevitably occurs, the golf club user usually does not take care of it, and it can be considered as the setting condition in the optimal state. on the other hand,
It is a well-known fact that even when using the shortest golf club, it is difficult to determine a flight distance of approximately 70 meters or less without making any adjustments. Properly hitting a ball over a distance of about 70 meters or less requires considerable practice, experience, and skill.

``Means for solving the problem'' Since we know the relationship between the flight distance and the swinging speed of the batting stick, that is, the centrifugal force of the swing, if the appropriate flight distance is known in advance, we can attach a weight to the batting stick. The aim is to properly sense the centrifugal force exerted by a heavy object corresponding to the flying distance.

The present invention relates to knowing in advance the degree of weakness of a batted ball in order to obtain an appropriate flight distance without relying on experience or skill, and will be described below.

"Example" FIG. 1 shows an example of the present invention. Weight body 1 is elastic body 2)
and is supported in the axial direction by a buffer elastic body 3.
These can be easily moved in the axial direction by a shaft 4, but the shaft 4 is not always necessary.
Further, although these are stored in a container 5, the container 5 may also serve as the shaft of a ball hitting stick.

The stopper 6 is a supporting end of the elastic body 2. The electrode 7 serving as an electrical contact is attached to a part of the container 5, for example.
The other electrode 8, which is paired with the electrode 7, is placed near the electrode 7. The electrode 7 and the other electrode 8 are electrically connected by movement of the weight body 1. It is assumed that the additional electrode 9 is provided at a position where it will be electrically connected when the weight body 1 moves further. The electrical connection in this case may be a method in which electrode 7 and electrode 9 are connected, or
It is also possible to provide an electrode corresponding to the paired electrode 7.

Electrical contacts are connected depending on the position of the weight body, and the operating body
It is assumed that O is suitable for performing an action such as emitting a sound. When the weight body 1 moves further and the electrical contacts of the electrodes 9 are connected, the actuating body 11 is actuated. The battery 12 supplies power to the above-mentioned electrical contacts and is fixed to a stand, which is a part of the container 5, for example, with a band 13 and screws 14. The container 5 is provided with, for example, an adjustment screw 15 for setting the position when centrifugal force is acting on the weight body, and by turning a dial 16, the end face 17 of the weight body 1 and the electrodes 7, 8, and 9 are adjusted. You can adjust the positional relationship by moving them further away or closer together. A scale 18 is attached to the dial 1G and is associated with the position where the weight body 1 activates the electrical contact.

If a hand switch 19 is provided to prevent battery consumption, the battery can last for a long time and can be prevented from being activated at an unexpected time.

When the dial 16 is turned, a gap 2o is created by the adjustment screw 15, making it difficult to understand the relationship between the finger points on the fixed side that correspond to the scale 18, so it is preferable that no gap occurs even when the dial 18 is turned. To explain with reference to FIG. 2, if a keyway 22 is provided in the dial 21 and a key 25 is provided in the shaft 24 of the screw 23 that fits into the weight body position setting adjustment screw 15 provided on the container 5, the dial 21 can be adjusted. Even when the dial 21 is turned, the dial 21 itself does not move in the axial direction together with the screw 23 and can only be turned. dial 2
1 is provided with a collar 26 to prevent it from falling off, and is fitted into an overhanging ring portion 27 on the container side.

FIG. 3 shows the electrical circuit of the present invention, in which an electric wire 28 comes out from the battery 12, passes through a switch 19, and reaches the electrode 7. Electrodes 8.9 corresponding to electrodes 7 are provided to serve as electrical contacts. The actuating body 10 and the actuating body 11 are as described above, and electricity passes through them and returns to the battery through the conductor 29.
The above explanation has mainly focused on operating electrical contacts by the movement of a heavy body due to centrifugal force, but there are other electrical methods in which electrical resistance can be activated by moving a variable resistor, such as a heavy body, instead of using an electrical contact. A similar effect can be obtained by changing, for example, installing a potentiometer.

Further, the operation by mechanical contacts is shown in FIG. 4, for example.

The weight body 1 is supported by the elastic body 2 as described above, and the cushioning elastic body 3 may be omitted although it is better to have it. This also applies to the case of FIG. 1 described above. A lever 30 is attached to a weight body 1 at an appropriate position by a fulcrum 31. When the end 32 of the lever 30 comes to be pressed against the weight body 1, the other end 33 moves in a direction opposite to the movement direction of the weight body due to the lever relationship. Usually lever 30 is
It is held in a predetermined position by an elastic body attached to the container 5, such as a spring 34.

Now, when the weight body 1 operates, the other end 33 of the lever is moved by the spring 3.
For example, a reed 35 placed in the container is struck against the force 4 to produce a perceivable sound. A fulcrum 36 equivalent to the fulcrum 31,
If the lever 37 is installed a little farther from the fulcrum 31 than the weight l, it can be installed that operates a little slower than the lever 30, that is, with a stronger force.For example, if the lead 38 is installed in the same way, If it is excessive, a detection sound will be emitted and a warning will be given.

In this way, the distance between the weight body and the electrical or mechanical contact point is known in advance, such as a commercially available distance meter, which reads from the viewing angle of the length of the ball held up against the cup. However, by using these to adjust the distance scale, for example, when hitting a golf ball, if the rotational speed of swinging the golf club is appropriate, an appropriate sound will be generated, and if it is excessive, an excessive sound will be generated. do. If there is not enough sound, there will be no sound, but if you set the distance and swing the golf club in preparation before hitting the ball, the appropriate sound will be generated when you swing the golf club properly, and you can hit the ball based on the feeling at that time. I understand.

It is also possible to identify whether or not the ball was hit appropriately.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the present invention, FIG. 2 is a partial sectional view of another example of FIG. 1, FIG. 3 is a model diagram of the electrical circuit of FIG. It is a partial diagram which shows another example of. 1... Weight body 8... Electrode 11... Operating body 22... Keyway 35... Lead 2... Elastic body 9... Electrode 16... Dial 25... Key 37 ... Lever 7 ... Electrode 10 ... Operating body 18 ... Scale 30 ... Lever 38 ... Lead Figure 2

Claims (4)

[Claims] (1) An appropriately shaped elastic body, a weight body supported by the elastic body, a positioning part that holds the weight body in an appropriate manner, such as a screw mechanism, and an electric device attached to the weight body at an appropriate position. A flight distance setting device for a batting ball, comprising a contact point, a power source for supplying power to the contact point, and the above-mentioned heavy body position detector, such as an electric buzzer, driven by the power source. (2) In the positioning part that holds the weight body shown in claim 1 by an appropriate method, for example, a screw mechanism,
A flight distance setting device for a batting ball that has scales at appropriate intervals on either the movable side or the fixed side of the male thread side or the female thread side, and an index on one side. (3) The weight body shown in claim 1 and a mechanical contact attached to the weight body at an appropriate position, such as a lever type contact, and the contact point can detect the position of the weight body by sensing and operating sound, for example. A flight distance setting device for a batting ball equipped with a detection sensor. (4) A flight distance setting device for a ball batting rod, in which a variable resistor is attached in place of the electrical contact as set forth in claim 1, and the components are appropriately housed in the ball batting rod.