KR20100036843A - Golfclub for swing training and driving method thereof - Google Patents

Abstract

PURPOSE: A golf club for a swing practice is provided to inform a golfer a result of operation steps from holding a grip of the golf club to completing a swing after an impact in which an actually hitting is performed. CONSTITUTION: A golf club for a swing practice comprises the following: a measurement trigger unit triggering an operation by a holding of a grip(12) from a user; a swing angle measurer informing the user about the swing angle after an address; a location verifier to confirm a fixed location of a back-swing top and a down-swing top; a swing speed measurer; and more than one impact measurer to sense the swing speed during an impact. The measurement trigger unit is a pressure sensor(20) in which starts the measurement by detecting the pressure holding the grip while being located in the upper inside of a shaft(14).

Description

Swing Practice Golf Club and Driving Method {GOLFCLUB FOR SWING TRAINING AND DRIVING METHOD THEREOF}

The present invention relates to a golf club for swing practice, in particular golfer by allowing the golfer to inform the golfer the result of a series of steps from the grip of the golf club to the completion of the swing or the swing completion stage after the impact of the actual hit The present invention relates to a golf practice golf club and a driving method thereof so as to acquire a correct swing posture.

Golfers who are new to golf or want to improve their swing form or swing tempo to reduce their scores, with the help of golf clubs used in practice, with the help of a variety of assistive devices, with the exception of expert assistance, backswing and downswing from the addressing stage. In the step of trying to acquire the correct swing posture.

However, since the conventional swing training aids do not use the same golf club as is used in practice, a rather complicated measuring device is used, or a display device for checking the swing form or the swing tempo, the swing practice place is the place of installation of these devices. There are drawbacks limited to these, and there are also economic constraints that cannot be purchased and provided by each golfer. It is known that the golf club itself used in practice is combined with a mechanism that can help swing practice, but its simple function does not help the golfer.

In the present invention, the invention was made in view of such a conventional situation, and the golfer uses the same golf club as the one used in practice to practice swinging, and confirms the correct address posture from the grip step and checks the backswing and downswing. The purpose of this course is to provide the golf clubs for swing practice that can acquire the exact position of the backswing top and downswing top, which are the whole process and their ending stages, and the information related to the swing speed at impact.

To this end, an aspect of the present invention provides a golf club for swing practice combined with the following means:

(A) measurement trigger means for triggering the measurement to start when the golfer grabs the grip for swing practice;

(B) swing angle measuring means for informing the swing angle in the swing step made after the correct address;

(C) positioning means for informing that the determined positions of the backswing top and the downswing top have been reached;

(D) swing speed measuring means for measuring the swing speed to inform the golfer;

(E) Impact measuring means for measuring the swing speed at impact.

In the present invention, the measuring trigger means is disposed inside the grip or the upper side of the shaft to which the grip is coupled is a pressure sensor for detecting the pressure to hold the grip to start the measurement, or to hold the grip It comprises a temperature sensor for sensing the temperature of the golfer's hand to start the measurement, or a trigger sensor using a horizontal principle to detect the inclination angle of the grip to start the measurement. In particular, the trigger sensor is composed of an outer tube and an inner tube forming an inner space, and a lower bulkhead and a horizontal upper bulkhead having an inclination angle equal to the standard lay angle of a golf club are disposed in the inner space, and between the lower bulkhead and the upper bulkhead. In the inner space, two contacts are disposed on the outer surface of the inner tube in the radial direction and at the same angle as the inclination angle of the lower partition wall, and mercury is introduced into the inner space as a conductive material.

In addition, in the present invention, the swing angle measuring means includes a gravity sensor arranged in two rows in the shaft by varying the inclination by a predetermined angle unit, the gravity sensor is composed of a straight portion and a perpendicular portion having a cross-sectional shape "T" type At the lower end of the orthogonal portion, contacts are disposed to face each other, and solid conductors of a liquid conductor known in the art such as mercury or spherical bodies known in the art are infiltrated therein.

In the present invention, the positioning means for confirming the determined position of the back swing top and the down swing top includes a swing top position sensor, the swing top position sensor is movable up and down along the long axis in the capsule housing It is composed of a spring weighted on both sides is arranged and the two contacts are connected to the inside of the housing in a width larger than the longitudinal size of the weight.

In addition, in the present invention, the swing speed measuring means includes a small hole formed in the hitting direction on the shaft which is the upper side of the hosel of the head, and a wind speed sensor disposed inside the shaft adjacent thereto. In addition, the swing speed measuring means includes a centrifugal force sensor disposed in the shaft that is the upper side of the hosel of the head, the centrifugal force sensor is composed of a housing having a partition wall formed with a hole in the inner center, the centrifugal force direction in the housing The weight body is extended to the pin is disposed, the pin extends through the through hole of the partition wall, and the spring is interposed between the weight body and the partition wall, the resistor is disposed in the lower side of the partition wall and the contactor is installed at the end of the pin. The resistor and the contactor form a variable resistor.

In the present invention, the impact measuring means for measuring the swing speed at the impact can be arranged in the sweet spot of the club face as close to the club face as possible in the head to generate a trigger signal at impact To include one piezoelectric sensor. In addition, the impact measuring means includes a weight body 96 supported at both ends by a spring 94 in the capsule 92 and a contact point 98 to make contact with the movement of the weight body 96. It characterized in that it comprises an impact contact sensor 90 disposed in the shaft (14).

In addition, another aspect of the present invention comprises the steps of triggering the golf club by detecting it when the grip of the golf club for golf practice; Measuring a swing angle in a swing step made after addressing, and measuring a swing speed at one or more points before and after impact and at impact time; Checking the determined positions of the backswing top and the downswing top and measuring the swing angle at the backswing top or finish and the swing time from the back swing top to the finish; And displaying one or more of swing speed at each unit time before and after impact, swing speed at impact, maximum swing speed, swing angle at back swing top or finish, and swing time from back swing top to finish. .

Referring to the present invention in more detail based on the accompanying drawings as follows.

First, Figure 1 shows a golf club 10 to which the present invention is applied, the golf club 10 shown is an example of a golf club of seven irons.

The golf club 10 is composed of a grip 12, a shaft 14 and the head 16, like a conventional golf club. For example, since the golf club of the seven irons are mainly used in the swing practice, the present invention is selected to show the golf clubs of the seven irons, but can be applied to other golf clubs in the art It is natural for those who have knowledge.

By combining the following components to such a golf club 10, the present invention can be realized:

(A) measurement trigger means for triggering the measurement to start when the golfer grabs the grip for swing practice;

(B) swing angle measuring means for informing the swing angle in the swing step made after the correct address;

(C) positioning means for informing that the determined position of the backswing top and the downswing top has been reached;

(D) swing speed measuring means for measuring the swing speed to inform the golfer;

(E) Impact measuring means for measuring the swing speed at impact.

The present invention, as mentioned in the description of the purpose, the golfer checks the correct address posture from the grip of the golf club to practice the swing, and the entire process of the backswing and downswing and the end of the backswing top and You can learn the exact position of the downswing top and improve the swing posture by learning the swing speed and the impact-related information.

In addition, the measuring means described above may be coupled to the grip 12, the shaft 14 and the head 16 of the golf club 10 as will be described in detail later. In one embodiment, a microprocessor (not shown), which is a processing means for processing a signal of each measuring means and visually or audibly instructing a golfer, may be embedded in the shaft 14 in a stable state. As another embodiment, the display 18 of such processing means may be arranged on the outer surface side of the shaft 14, just below the grip 12, as shown in FIG. 1.

A. Measurement Trigger

It is a measurement trigger means that triggers the measurement to be started through the microprocessor when the golfer grabs the grip 12 of the golf club 10 for swing practice. Upon triggering, the microprocessor may initialize an internal memory device (not shown) and the display 18.

This measuring trigger means is arranged inside the grip 12 or the upper side of the shaft 14 to which the grip 12 is engaged since the golfer should operate when grabbing the grip 12. In one embodiment, the pressure sensor 20 for detecting the gripping force of the hand holding the grip may be used as the measurement trigger means. The pressure sensor 20 detects the gripping force of the hand holding the grip so that the operation of each measuring means can be started through the microprocessor. As another embodiment, the measurement trigger means may be a temperature sensor (not shown) for sensing the temperature of the golfer's hand holding the grip.

In addition, the measuring trigger means allows the measuring means to start operation from the moment the golfer grasps the grip as described above, whereas the golf swing starts after the address posture is completed. It may be possible to start the operation of each measuring means from.

To this end, as shown in FIGS. 3 to 6, a trigger sensor 22 capable of detecting the correct address posture of the golf club may be disposed inside the shaft 14 to which the grip 12 is coupled.

That is, when the golf club 10 is the seventh iron, if the golf club 10 is placed in the correct address position, the standard lay angle formed by the central axis of the shaft 14 and the ground is 62 °, and the head ( Since the standard loft angle of the club face of 16) with respect to the line perpendicular to the ground is 40 °, if the correct address posture is to be made, at least the inclination angle of the shaft 14 with the ground should be 62 °, the standard lie angle. do. In order to detect the inclination angle of the shaft 14, it is preferable that the trigger sensor 22 uses the principle of the horizontal system. As an example, as shown in FIG. 4, the trigger sensor 22 is in the form of a cylindrical body having an inner space 24 that is a closed tubular shape, and the inner space 24 is an outer tube 26 and an inner tube 28. It is composed of When the trigger sensor 22 is disposed so that its center axis is vertical, the inclination angle 62 °, which is the standard lay angle of the golf club, is set in the inner space 24 of the trigger sensor 22. The lower bulkhead 30 is disposed so that the upper bulkhead 32 is positioned horizontally at right angles to the central axis of the trigger sensor 22, and the lower bulkhead 30 and the upper bulkhead 32 are disposed above the inner space 24. In the inner space 24 substantially forming a boundary), two contacts 34 and 36 are disposed to face the outer surface of the inner tube 28 in a radial direction, but have an inclination angle of 62 ° up and down, and the lower partition 30 Mercury 38 is filled as a conductive material in the inner space 24 bounded by the upper partition 32. The amount of this mercury 38 is such that the two contacts 34 and 36 can be energized by the mercury 38 when the correct address posture is established so that the lower partition 30 is parallel to the ground. It can be determined at the level.

Thus, if the shaft 14 of the golf club 10 has the correct address posture and the inclination angle of the shaft 14 coincides with the standard lie angle, the mercury 38 of the triscer sensor 22 has two contacts ( 34) 36 will allow electrical connections to be made. The electrical connection of the two contacts 34, 36 transmits the trigger signal in the form of an electrical signal to the microprocessor to initiate the measurement. If the shaft 14 of the golf club 10 is not in the address position, the lower partition 30 is not horizontally parallel to the ground, so that the mercury 38 is energized between the two contacts 34 and 36. I will not lose.

The initiation of the measurement by this measuring trigger means allows any one or more of the means described below to be selected and / or combined to operate.

B. Swing angle measuring means

The swing angle measuring means instructs the golfer to instruct the swing angle in the swing step after the correct address so that the swing angle can be acquired. In general, the swing consists of a backswing starting from the address posture and a continuous step from the backswing top to the finish stage, that is, the down swing top. This swing posture obtains the angle represented by the inclination of the shaft at a specific moment in the swing process and instructs the golfer to swing according to the normal trajectory.

The configuration and operation of the swing angle measuring means will be described with reference to FIGS. 7 to 10.

First, the gravity sensor 40 used in the swing angle measuring means will be described in FIG. The gravity sensor 40 is composed of a straight portion 42 and an orthogonal portion 44 formed in a form orthogonal to the middle of the cross-sectional shape of the "T" shape in the middle. The straight portion 42 and the orthogonal portion 44 form a closed space, and mercury 46 is infiltrated therein, and mercury is formed at both ends of the straight portion 42 and at an orthogonal portion according to the inclination of the gravity sensor 40. 44) to the end side. At the lower end of the orthogonal portion 44, contacts 48 and 50 are disposed oppositely to generate an ON signal when the mercury 46 is moved to the end side of the orthogonal portion 44. In addition, in the present invention, instead of the mercury 46, a liquid conductor or a solid conductor known in the art may also be used, and the present invention is not limited to the mercury.

FIG. 7 shows, in some stages of golf club 10, a golfer backswing from an address posture to golf club 10 and performing downswing from the backswing top to the finish swing down stage. For example, it is preferable that the club face of the head 16 is perpendicular to the hitting direction in the range of about 30 degrees before and after the golf club 10 at the address position. To make the club face perpendicular to the batting direction is to make a plane perpendicular to the center axis of the shaft 14 perpendicular to the ground. However, since the shaft 14 rotates about the central axis of the shaft 14 during the backswing and downswing, a plane perpendicular to the center axis of the shaft 14 is perpendicular to the ground. If it detects an in, it can tell the golfer that it is maintaining the correct swing angle. This description is taken as an example of detecting a swing angle of a moment, and the swing angle to be detected may be selected during the swing process of the golf club 10.

In addition, for example, a gravity sensor 40 as shown in FIG. 9 is arranged in order to detect a swing angle at any moment through the entire process of the backswing and the downswing from the address stage of the golf club 10 as shown in FIG. 7. do. As an example, the gravity sensor 40 shown in FIG. 9 is arranged in the shaft 14 with multiple tilts as shown in FIG. 8. In FIG. 8, a plurality of gravity sensors 40 are arranged in two rows within the shaft 14, and the gravity sensors 40 in each row are arranged to be inclined with a gradual difference of 10 ° in the illustrated example. 8, when the gravity sensors 40 are arranged as described above, the shaft 14 may notify the golfer when the plane perpendicular to the ground is perpendicular to the ground with respect to the center axis of the shaft 14. In this example, the swing angle of each position is detected. In this case, the ON / OFF states of the gravity sensors 40 (A1 to A9, B1 to B9, D1 to D9, and E1 to E9) are as follows.

Gravity sensor condition Gravity sensor condition A1 OFF D1 OFF A2 OFF D2 OFF A3 OFF D3 OFF A4 OFF D4 OFF A5 OFF D5 OFF A6 OFF D6 OFF A7 OFF D7 OFF A8 OFF D8 OFF A9 OFF D9 OFF B1 OFF E1 ON B2 OFF E2 ON B3 OFF E3 ON B4 OFF E4 ON B5 OFF E5 ON B6 OFF E6 ON B7 OFF E7 ON B8 OFF E8 ON B9 OFF E9 ON

As such, the swing angle obtained by the combination of outputs from the plurality of gravity sensors 40 may be visually indicated through the display 18 or audibly indicated through an acoustic generator (not shown).

C. Backswing top  And Downswing top  Positioning means

The golfer can acquire the correct swing posture by using the swing angle information obtained through the swing angle measuring means mentioned above when the position of the back swing top and the down swing top is confirmed during the swing process of the golf club 10. Therefore, it is preferable that the predetermined positions of the back swing top and the down swing top of the golf club 10 are detected. During the swinging process of the golf club 10, the acceleration of the golf club, that is, the shaft 14 is made in the back swing top and the down swing top. In order to use the acceleration change of the shaft 14, the swing top position sensor 52 as shown in FIG. 11 is disposed in the shaft 14.

In FIG. 11, the swing-top position sensor 52 has a weight body 56 movable up and down along a long axis in the capsule-shaped housing 54 and both side extensions 58 extending on both sides of the weight body 56. The springs 60 are coupled to each other so that the weight body 56 is centered by these springs 60. Two contacts 62 and 64 are connected to the swing-top position sensor 52 in a width larger than the length of the weight body 56 in the housing 54, and these contacts 62 and 64 are connected to each other. It is connected to the microprocessor mentioned above.

During the swing process of the golf club 10, the swing is interrupted or the swing direction is changed in the back swing top and the down swing top to change the acceleration. At this time, the weight 56 of the swing-top position sensor 52 is moved by inertia to overcome the force of the spring 60 on one side or the other side in the housing 54 to move to contact the contact 64 or 62 to backswing The position of the top or downswing top is detected and can be signaled to the golfer. The microprocessor can also receive this and calculate the swing time from the backswing top to the finish.

The swing top position sensor 52 is connected with the above-described swing angle measuring means to detect the swing angle when the position of the back swing top or the down swing top is detected by the swing top position sensor 52, thereby allowing the golfer to correct the swing angle. Can learn swing attitude.

D. Swing speed measuring means

The swing speed of the golf club 10 is an important factor in increasing the flying distance with the correct swing posture. Therefore, the golfer tries to increase the swing speed at impact by swing practice. If you can instruct the golfer on this swing speed as a numerical value during swing practice, it will help to reduce the number of strokes. To this end, in the present invention, the swing speed can be measured using the wind speed measuring method as shown in FIG. 13 and the centrifugal force measuring method as shown in FIGS. 14 and 15.

In Fig. 13, a small hole 66 is formed at a position almost toward the ball in the shaft 14, which is the upper side of the hosel of the head 16, and a wind speed sensor 68 is disposed inside the shaft 14 adjacent thereto. At swing time, the wind speed sensor 68 measures the flow rate of air passing through the small hole 66 of the shaft 14 and sends it to the microprocessor so that the wind speed can be displayed on the display 18.

14 and 15 illustrate measuring the swing speed by using the centrifugal force measuring method. In one embodiment, the centrifugal force sensor 70 is disposed in the shaft 14, which is the upper side of the hosel of the head 16. In addition, as shown in FIG. 15, the centrifugal force sensor 70 is composed of a housing 74 having a partition wall 72 at the inner center thereof. In the partition 72, a through hole 76 is formed at the center thereof, and a weight body 78 is disposed in the housing 74, and the pin 80 extending in the direction of the centrifugal force therefrom is a through hole 76 in the partition 72. And a spring 82 is interposed between the weight body 78 and the partition wall 72. On the other hand, a resistor 84 is disposed in the lower side of the partition wall 72 and a contactor 86 is installed at an end of the pin 80 extending through the through hole 76 of the partition wall 72 so that the resistor 84 and the contactor are installed. Make 86 a variable resistor. One side of the resistor 84 and the contactor 86 are electrically connected to the microprocessor so that the swing speed can be measured by the resistance value detected by the contactor 86 through the action of centrifugal force during the swing.

In addition, the centrifugal force acts upon the swing of the golf club 10 in the swing stage. Centrifugal force measuring method for measuring swing speed is to use this centrifugal force. The centrifugal force acting upon the swing tends to move toward the direction of action of the centrifugal force against the force of the spring 82 of the centrifugal force sensor 70. At this time, the weight body 78 and the pins 80 extending therefrom move, and the contacts 86 mounted on the pins 80 move in the resistors 84 to change the resistance value. Thus, the swing speed can be measured by reading the variable resistance value.

It is preferable to measure the swing speed at a time of impact or within a short time before and after the impact to substantially measure the swing speed at impact. By the impact measuring means described in detail below, the operation of the measuring circuit coupled to the swing speed measuring means at the time of impact can be triggered so that the swing speed can be measured.

E. Impact measuring means

This is to obtain a trigger signal for triggering the swing speed measuring circuit so that the swing speed as mentioned above can be measured at impact.

16 illustrates the generation of the trigger signal and the setting of the measurement time at which the measurement of the swing speed is triggered. At this time, the measurement time unit is preferably in the range of 10 ^-3 ~ 10 ^-1 sec, it is arbitrarily set by the user, the microprocessor stores it in the built-in memory device (not shown) to display in the set measurement time unit It is preferable to make it appear in (18).

The swing of the golf club 10 is made and the impact is made at the club face of the head 16 when the golf ball is hit, and the head 16 continues the swing motion until the finish stage. When the impact is made at time t0, a time of ± t1 may be set before and after from the time t0 of the measurement time so that the trigger signal is obtained and the swing speed measurement through the trigger signal is made.

In addition, in order to obtain such a trigger signal at impact, in the present invention, a piezoelectric sensor 88 as shown in Figs. 17 and 18 may be used, or an impact contact sensor 90 as shown in Fig. 19 may be used. have.

First, as shown in FIGS. 17 and 18, the piezoelectric sensor 88 is disposed in the sweet spot of the club face as close to the club face as possible in the head 16. At impact, the piezoelectric sensor 88 detects such an impact and sends a trigger signal to the swing speed measuring circuit.

19 shows the impact contact sensor 90, which is shown to be disposed in the shaft 14 close to the position in which the grip 12 is coupled, but may be disposed in another position within the shaft 14. The impact contact sensor 90 is composed of a weight body 96 whose both ends are supported by a spring 94 in the capsule 92 and a contact 98 which makes contact with the movement of the weight body 96. do. This contact 98 and the weight body 96 are electrically connected to a swing speed measuring circuit (not shown). The impact contact sensor 90 as described above generates a trigger signal when the weight body 96 moves and contacts the contact 98 due to an impact at impact.

Impact and swing speed before and after the impact is measured based on the trigger signal generated in this way can be provided to the golfer. After the finish step, the microprocessor uses the display 18 to swing the swing speed for each unit time before and after the impact, the swing speed at the impact, the maximum swing speed, the swing angle at the back swing top or the finish, and the swing from the back swing top to the finish. One or more of the times can be displayed.

As described above, the present invention checks the correct address posture from the grip of the golfer using the same golf club that is used in practice to practice the swing, and the entire process of the backswing and downswing and their ending steps It provides the golf club for swing practice to learn the exact position of the backswing top and the downswing top and to get the information related to the swing speed at impact.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, anyone of ordinary skill in the art will be possible to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications, changes And additions should be regarded as within the scope of the claims.

1 is a side view showing a golf practice golf club according to the present invention.

2 is a partial cross-sectional view showing an example of the measurement trigger means configured in the grip.

Figure 3 is a partial cross-sectional view of the grip coupled to the trigger sensor using the horizontal system principle as another example of the measurement trigger means.

4 is a perspective view showing a detailed structure of the trigger sensor shown in FIG.

5 and 6 are explanatory views for explaining the operation of the trigger sensor in FIG.

7 is an explanatory diagram showing a process of backswing and downswing from the address stage of a club.

8 is an explanatory diagram illustrating an arrangement state of a swing angle sensor installed in the club shaft to check the swing angle in the whole process of the swing;

9 is a detailed cross-sectional view of the swing angle sensor shown in FIG.

10 is an explanatory view for explaining the principle of operation of the swing angle sensor shown in FIG.

11 is a detailed cross-sectional view of a swing top position sensor installed in the club shaft to indicate the position of the back swing top and the down swing top;

12 is an explanatory view illustrating that the positions of the back swing top and the down swing top are checked in the swing process by the swing top position sensor shown in FIG.

Figure 13 is a partially enlarged view showing an example of the swing speed measuring means capable of measuring the swing speed.

14 is a partially enlarged view showing a club having a centrifugal force measuring swing speed measuring sensor using centrifugal force;

15 is a detailed cross-sectional view of the swing speed measuring sensor shown in FIG.

16 is an explanatory diagram for explaining the measurement of the swing speed at impact.

17 and 18 are front and side views of a club head illustrating that a piezoelectric sensor for obtaining impact information at the time of hitting is coupled to a club face.

19 is an explanatory view showing an impact contact sensor coupled in a club shaft to obtain impact information at the time of hitting;

<Code Description of Main Parts of Drawing>

A: measuring trigger means, B: swing angle measuring means, C: positioning means, D: swing speed measuring means, E: impact measuring means, 10: golf club, 20: pressure sensor, 22: trigger sensor, 40: gravity Sensor, 52: swing top position sensor, 68: wind speed sensor, 70: centrifugal force sensor, 88: piezoelectric sensor, 90: impact contact sensor.

Claims (14)

In a golf club (10) comprising a grip (12), a shaft (14) and a head (16). Measurement trigger means (A) for triggering a measurement to start when the grip is held; Swing angle measuring means (B) for informing the swing angle in the swing step made after the address; Positioning means (C) for confirming the determined positions of the back swing top and the down swing top; Swing speed measuring means (D) for measuring a swing speed; Swing practice golf club, characterized in that provided with at least one or more of the impact measuring means (E) to measure the swing speed at impact. The method of claim 1, The measurement trigger means (A) is disposed inside the grip 12 or the upper side of the shaft 14 to which the grip 12 is coupled to sense the pressure to hold the grip 12, the measurement can be started. Swing club for golf practice, characterized in that the pressure sensor 20 to be. The method of claim 1, The measurement trigger means (A) is disposed inside the grip 12 or the upper side of the shaft 14 to which the grip 12 is coupled to sense the temperature of the golfer's hand holding the grip 12 Swing practice golf club, characterized in that the temperature sensor 20 to start the measurement. The method of claim 1, The measurement trigger means (A) is disposed inside the grip 12 or the upper side of the shaft 14 to which the grip 12 is coupled to detect the inclination angle of the grip 12 to start the measurement. Golf clubs for swing practice, characterized in that the trigger sensor (22) using a horizontal system principle. The method of claim 4, wherein The lower barrier rib 30 having an inclination angle equal to a standard lay angle of a golf club in the inner space 24 is formed of the outer sensor 26 and the inner tube 28 forming the inner space 24. And a horizontal upper partition 32 is disposed, the inner space 24 between the lower partition 30 and the upper partition 32 in the radial direction opposite to the outer surface of the inner tube 28 and the inclination angle of the lower partition 30 The golf club for swing training, characterized in that two contacts (34) and (36) are formed at the same angle as the degree, and mercury (38) is infiltrated into the inner space (24). The method of claim 1, The swing angle measuring means (B) is composed of a gravity sensor 40 arranged in two rows in the shaft 14 by varying the inclination by a predetermined angle unit, the gravity sensor 40 has a cross-sectional shape "T" Consists of a straight line 42 and an orthogonal portion 44 of the type, the lower end of the orthogonal portion 44, the contacts 48, 50 are disposed facing each other and the conductor 46 to act on these contacts in the penetration Swing practice golf club, characterized in that. The method of claim 6, The conductor 46 is a golf club for swing practice, characterized in that the mercury. The method of claim 1, The positioning means (C) for checking the determined position of the back swing top and the down swing top is composed of a swing top position sensor 52, the swing top position sensor 52 is a long axis in the capsule housing 54 A weight body 56 which is movable up and down and is supported by both sides of the spring 60 is disposed, and the two contact points are wider than the longitudinal size of the weight body 56 in the housing 54. Swinging golf clubs, characterized in that (62) (64) is configured to be connected. The method of claim 1, The swing speed measuring means (D) is a small hole 66 formed in the hitting direction on the shaft 14, which is the upper side of the hosel of the head 16, and a wind speed sensor disposed inside the shaft 14 adjacent thereto. Swing practice golf club, characterized in that consisting of (68). The method of claim 1, The swing speed measuring means (D) is composed of a centrifugal force sensor (70) disposed in the shaft (14), which is the upper side of the hosel of the head (16), and the centrifugal force sensor (70) has a through hole (76) in the inner center thereof. And a housing 74 having a partition wall 72 formed therein. In the housing 74, a weight body 78 in which the pins 80 extend in the centrifugal force direction is disposed, and the pins 80 are partition walls 72. A spring 82 is interposed between the weight body 78 and the partition wall 72 and extends through the through hole 76 of the partition 80. A resistor 84 is disposed in the lower portion of the partition wall 72. The golf club for swing practice, characterized in that the contactor 86 is installed at the end of the pin 80 so that the resistor 84 and the contactor 86 constitute a variable resistor. The method of claim 1, Impact measuring means (E) for measuring the swing speed at impact can be arranged in the sweet spot of the club face as close to the club face as possible in the head 16 to generate a trigger signal at impact. Golf clubs for swing practice, characterized in that consisting of a piezoelectric sensor (88). The method of claim 1, The impact measuring means (E) is composed of a contact body 98 so as to be in contact by the movement of the weight body 96 and the weight body 96, both ends of which are supported by a spring 94 in the capsule 92 And a golf club for swing practice, comprising an impact contact sensor (90) disposed in the shaft (14). The method according to any one of claims 1 to 12, The golf club 10 further includes a display 18, through which the swing speed for each unit time before and after the impact, the swing speed at impact, the maximum swing speed, the swing angle at the back swing top or finish And a swing practice golf club that displays one or more of the swing times from the backswing top to the finish. In the driving method of the golf club for swing practice comprising the grip 12, the shaft 14 and the head 16, Detecting the grip when the grip is held and triggering the golf club; Measuring a swing angle in a swing step made after addressing, and measuring a swing speed at one or more points before and after impact and at impact time; Identifying the determined positions of the backswing top and the downswing top and measuring the swing angle at the backswing top or finish and the swing time from the backswing top to the finish; And displaying one or more of swing speed at each unit time before and after impact, swing speed at impact, maximum swing speed, swing angle at back swing top or finish, and swing time from back swing top to finish. Driving method of golf clubs for swing practice.

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