KR200310137Y1 - Golf club for training - Google Patents

Abstract

The present invention relates to a practice golf club that allows the beginner to learn how to prevent the inaccuracy of the impact and reduction of the flying distance by preventing excessive force applied to the grip during the downswing to reduce the rotational torque of the head.

To this end, the present invention is fixed at both ends of the shaft neck and the head neck protrusion 72 of the head 70, respectively, and pressurizes and fixes the head neck 71 by elastic force. After this is completed, the head stretching means 80 for restoring the head 70 to the original position;

One end is fixed to the shaft (60) and the bending preventing means (65) to prevent the head 70 to be bent to one side during the Plowslow operation after the impact operation of the golf ball;

Both ends are fixed to one side of the head stretching means 80 and the head neck 71 so that when the force is applied to the grip 100 during the downswing, it is bent to the opposite side of the bending preventing means 65 by elastic force. Consists of a pair of semi-elliptic bending means (66a, 66b), to eliminate the anxiety coming from the appearance of the conventional golf club attached to the pressing means and the inconvenience to handle the effect that the batter can perform a stable swing practice have.

Description

Golf club for training {Golf club for training}

The present invention relates to a practice golf club, and more particularly, to a structural improvement of the practice golf club that allows the beginner to practice by learning how to prevent the inaccuracy of the impact and reduce the flying distance by applying excessive force to the grip during the downswing.

A conventional golf club is described with reference to FIG.

As shown in Fig. 1, a conventional golf club is generally composed of a head 1 which is in direct contact with a golf ball, a shaft 2 constituting a pole and a grip 3 which is a handle. .

This golf club is described with reference to Figure 2, the batter swings by applying a lot of force to the hand holding the grip (3) during the down swing in mind to increase the distance of the golf ball.

To explain the reason, since the head 1 is relatively heavy compared to the grip 3 or the shaft 2 and is separated from the grip 3 by the shaft 2, the center of gravity 0 of the golf club is the head. It is formed close to (1).

Therefore, if the beginner applies a force F to the grip 3 in the direction of rotation in order to increase the flying distance of the golf ball at impact, the shaft 2 is weighed by the force F applied to the grip 3. It rotates counterclockwise about the center (0).

And since the head 1 is relatively free of movement compared to the fixed grip 3, it is applied to the grip 3, which is the opposite direction of the rotational torque obtained by the gravity and centrifugal force of the head during the down swing of the golf club. Force F1 acts in the opposite direction of force F.

Therefore, as the magnitude of the force F applied to the grip 3 increases, the force F1 applied to the head 1 increases, resulting in a phenomenon that the end of the shaft is bent at a predetermined angle. This bending phenomenon eventually reduces the rotational torque and thus prevents a large force from being applied to the golf ball at the moment of impact, thereby reducing the distance of the golf ball, resulting in unnecessary loss of force.

Therefore, a novice hitter must practice not to force the grip 3 during the downswing.

In order to prevent the novice batter from applying a grip on the downswing due to this problem, the applicant has proposed a practice golf club registered in Patent No. 10-0361337.

As shown in FIG. 3, the training golf club is bent when one end is fixed to the head neck 11 of the head 10 and the other end is fixed to the shaft 14 so that a force is applied to the grip 3 during downswing. The bending means 20a and 20b and the bending preventing means 23 are fixed to support the head 10 to the shaft 14.

In addition, the pivot prevention means 23 which prevents the head 10 from bending to the left of the shaft center line during the follow action of the golf ball after the impact operation of the golf ball, and the shaft 14 are pivotably attached to the shaft 14 so that the head may be rotated at the address and the back swing. The pressurizing means (10) is configured to pressurizing means (30) for releasing the pressurization of the head so that the bending means (20a, 20b) can be bent during the downswing.

However, the pressing means 30, the support plate 31 of the pressing means 30 during the down swing overcomes the holding force of the elastic spring by the resistance of the air and rotates in the opposite direction of the down swing around the hinge 33 The sound of annoying winds arose from the air's resistance.

In addition, the pressing means 30 has a support plate 31 is formed to be attached to the other end of the shaft 14 is cumbersome, not only unsightly appearance but also takes a lot of manufacturing costs, when swinging, large hitters There was a problem of lowering the swing practice motivation due to the inability to properly practice swing.

Therefore, the present invention improves the structure of the practice golf club that can practice a stable down swing by preventing the batter using the existing practice golf clubs a great anxiety caused by the pressing means during the swing practice, and instability from the appearance. There is this.

The golf club for practice according to the present invention for the above object is in the golf club connected to the grip and the head of the golf ball impact the grip of the batter's hand,

Both ends are fixed to the head neck protrusion of the shaft and the head, respectively, and if the head is normal, the head neck is fixed by elastic force, and when the down swing is extended, the head stretching means for restoring the head to its original position after the down swing is completed; ;

One end is fixed to the shaft and the bending preventing means for preventing the head to be bent to one side during the pawlslow operation after the impact operation of the golf ball;

Both ends are fixed to one side of the head stretching means and the head neck, respectively, and a pair of semi-elliptic bending means 66a and 66b are bent to the opposite side of the bending preventing means by elastic force when a force is applied to the grip during downswing. It is characterized by.

1 is a perspective view for explaining a conventional golf club.

Figure 2 is a conceptual diagram for explaining the principle of the force generated during the swing of the practice golf club shown in FIG.

3 is a structural diagram of a conventional golf club for practice.

Figure 4 is a structural diagram of a golf club for practice according to the present invention.

Figure 5 is a side cross-sectional view of the practice golf club shown in FIG.

Figure 6 is an exploded perspective view of the golf club for training shown in FIG.

Figure 7 and Figure 8 is a side cross-sectional view for explaining the operating state during the down swing of the practice golf club according to the present invention.

<Description of the symbols for the main parts of the drawings>

60: shaft 61: housing

62: T pin 63: housing cap

64: bellows 65: bend prevention means

66a, 66b: bending means 67: elastic spring

69: jaw 70: head

71: head neck 72: head neck protrusion

80: head extension means

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the practice golf club according to the present invention.

4 to 6, the training golf club of the present invention will be described in detail. One end of the training golf club is fixed to the head neck protrusion 72 of the head 70, and the housing 61 as the head stretching means 80. It is composed of bending means 66a and 66b, which are fixed to the other end of the T-shaped pin 62 in the inside and bent when a force is applied to the grip during downswing.

The head 70 is fixed to the shaft 60 to prevent the head 70 from moving to the left of the center line A of the shaft 60 to prevent the head 70 from being bent during the follow action of the golf ball after the impact operation of the golf ball. It consists of the bending prevention means 65.

A head that is fixed to one end of the shaft 60 to restore the head 70 to its original position by the force that the head 70 moves away from the shaft 60 by gravity and centrifugal force acting on the head 70 during the down swing. It includes an expansion means (80).

The bending means (66a, 66b) is characterized in that it is bent according to the magnitude of the external force when the external force is applied, and has a property to restore if the external force is not applied.

The bending means (66a, 66b) having such a feature is formed of a plurality of coupling holes (59) as shown in Figure 6, made of a material having an elastic, the inner surface of the pair of semi-elliptic thin panel panel symmetrical to each other It is made, including.

On the other hand, the bending means (66a, 66b) is not bent when the user does not apply a force to the grip 100 to reduce the rotational torque in the direction opposite to the rotational direction to the head 70, the user When the force is applied to the grip 100 to reduce the rotational torque in the direction opposite to the rotation direction to the head 70 has a property of sharp bending.

One side of the bending means (66a, 66b) is a coupling hole 59 is formed is fixed to the head neck protrusion 72 formed in the head neck 71 by rivets (68).

The other side of the bending means 66a, 66b fixed to the head neck protrusion 72 is a frame protruding out of the frame of the T-shaped pin 62 inherent in the housing 61, which is the head extension means 80. The rivets 68 are fixed to the coupling holes 59 formed at one side thereof.

In addition, referring to FIG. 5, the anti-twist means 65 is attached to prevent the head from bending to the left of the center line A of the shaft 60 during the follow-throw operation after the impact operation.

As shown in FIG. 6, the anti-bending means 65 attached to the circumferential surface of the lower portion of the housing 61, which is the head expansion and contracting means 80, has a semicircular panel having a coupling hole 59 for fixing with a rivet 68. Is formed.

The lower portion of the semi-circular panel of the anti-fold means 65 is formed so that one end 65-2 of the panel protrudes from the other end 65-1 so as to be attached to the outer circumferential surface of the housing 61, which is the head expansion and contraction means 80. do.

The semicircular panel upper portion of the anti-fold means 65 is formed such that one end 65-4 of the panel protrudes from the other end 65-3 so as to be attached to the circumferential surface of the head neck 71 of the head 70.

Then, in order to pressurize and fix the head neck 71 of the head 70 at the address and the back swing, a pair of locking jaws 69 are formed on one inner surface of the bending preventing means 65.

One end 65-1 of the bending preventing means 65 is fixed to the lower circumferential surface of the housing 61 which is the head expansion and contracting means 80 by inserting the rivet 68 into the coupling hole 59, the other end 65 -4) is extended to the head neck 71 to block the head 70 to prevent bending to the left from the follow-up center line (A).

In addition, the head expansion means 80 is a housing 61 inserted into one end of the shaft 60 and inside the housing 61, the T-shaped pin that rises by the centrifugal force acting on the head 70 during the down swing is It is inserted into and fixed to the other ends of the bending means 66a and 66b, and the T-shaped pin 62 is formed of an elastic spring 67 which raises and lowers by compression and expansion.

The T-shaped pin 62 is composed of a housing cap 63 screwed to the upper portion of the housing 61 so that the T-shaped pin 62 is not separated from the inside of the housing 61 by the elastic force of the elastic spring 67.

In order to screw the housing 61 and the housing cap 63, male threads are formed on the outer surface of the housing, and the housing cap 63 coupled with the housing 61 has female threads formed on the inner surface thereof to enable screwing. do.

Bellows 64 are formed outside the housing 61 and the housing cap 63 to protect the housing 61 and the housing cap 63 and to prevent dust from entering, and the bellows 64 are urethane. And a rubber material.

The golf club for practice according to the present invention made in this configuration is able to practice the swing to prevent the starting distance is reduced by reducing the rotational torque of the head 70 at impact when the beginner applies a force to the grip (100) do.

Here, with reference to the accompanying drawings Figures 7 and 8 will be described the operation of the present invention practice golf club when the address, back swing, down swing as follows.

First, the case of addressing will be described. When the head 70 is shaken from side to side without applying a force to the grip 100 at the address, the bending means 66a and 66b are not bent and remain as it is.

That is, the bending means 66a and 66b are formed by the elastic spring 67 in the housing 61 formed in the head expansion and contraction means 80 expanding the T-shaped pin 67 in the housing 61 in the housing 61. It is fixed not to flow.

In addition, the head neck 71 is fixed by pressing the head neck 71 by the locking jaw 69 formed inside the upper part of the anti-buckling panel, which is the anti-buckling means 65, of the head neck 71 of the head 70. Since the head 70 is not shaken as in the conventional golf club, it is possible to take an accurate address posture.

Next, the case of performing a back swing is as follows.

In the practice golf club according to the present invention, the bending means 66a and 66b are not bent by gravity of the head 70 when the peak of the back swing is reached.

That is, the bending means 66a and 66b, as in the case of the address, are configured to accommodate the T-shaped pin 62 in the housing 61 by the expansion action of the elastic spring 67 in the housing 61 formed in the head expansion and contraction means 80. It is fixed not to flow in 61.

In addition, the head neck 71 of the head 70 is fixed to the head neck by a pair of locking jaws 69 formed inside the upper part of the anti-buckling panel, which is the anti-buckling means 65, and therefore, due to the gravity of the head 70. The bending means 66a, 66b can take the correct back swing posture without being refracted.

Finally, if you describe the down swing,

Practice golf club according to the present invention is a natural down swing is made when the user does not apply an external force to the grip 100 during the down swing.

That is, as shown in FIG. 7, when the down swing is performed in the state where the external force is not applied to the grip 100, the head 70 is moved away from the shaft 60 by gravity and centrifugal force applied to the head 70. I have the power to go out

By this force, the T-shaped pin 62 in the housing 61, which is the head expansion and contraction means 80, is moved by the gravity and centrifugal force acting on the head 70 while being fixed by the expansion action of the elastic spring 67. The elastic spring 67 is compressive because of the force 70 is to move away from the shaft 60.

The T-shaped pin 62 is raised, and at this time, the bending means 66a and 66b and the head 70 are pressed by releasing the head neck 71 pressed by the locking jaw 69 in the bending preventing means 65. Is released.

At this time, the pair of locking jaws 69 in the bending preventing means 65 that pressurizes the head by lifting the T-shaped pin 62 in the housing 61, which is the head expansion and contracting means 80, releases the pressure of the head. The means 66a and 66b are in a bendable state.

However, since the force is not applied to the grip 100, the force for reducing the rotational torque is not generated in the head 70, and the head 70 maintains the rotational torque obtained by the inertia and centrifugal force of the head as it is. You will be able to practice the movement to impact the ball strongly.

On the other hand, after the impact operation, the head 70 is prevented from being moved to the left side of the center line A of the shaft 60 by the bending preventing means 65 during the pawl-low operation, and the centrifugal force of the head is no longer at the apex of the pawl-low operation. Since it does not act, the elastic spring 67 in the housing 61, which is the head expansion and contracting means 80, is restored from the compressed state to the expanded state and the T-shaped pin 62 is lowered to the state shown in FIG.

Practice golf club according to the present invention, when the user applies excessive force to the grip 100 during the downswing, the natural downswing is not made.

In other words, the practice golf club according to the present invention, when the force acts on the grip during the downswing as shown in Figure 8 by the gravity and centrifugal force acting on the head 70 to move away from the shaft 60 There is strength

By this force, the T-shaped pin 62 in the housing 61, which is the head expansion and contraction means 80, is fixed by the elastic spring 67 in the state of being fixed by the expansion action of the elastic spring 67. 62) rises.

At this time, the release means 66a and 66b are bendable because the pressurization of the head 70 is released by releasing the head neck 71 pressed by the locking jaw 69 in the bending preventing means 65.

At this time, when a force is applied to the grip 100, a force for reducing the rotational torque of the head 70 obtained by the centrifugal force and inertia of the head acts on the head 70.

When a force that reduces the rotational torque of the head 70 (that is, a force enough to bend the bending means (bending shaft)) is applied, the bending means 66a, 66b are not tolerated by this force and bent as it is.

Therefore, the bending means 66a and 66b are bent and the downswing cannot be accurately performed, and the user can know that unnecessary external force is applied to the grip 100.

In this way, the practice golf club according to the present invention can learn how not to apply a force to the grip by repeating the practice so that the user does not apply excessive force to reduce the rotational torque of the grip (100).

As described above, the practice golf club according to the present invention can achieve the same effect as the practice of the address, back swing and down swing posture with a conventional golf club, the user exerted excessive force on the grip and the centrifugal force of the head at impact You can practice downswing to maintain the rotational torque gained from inertia.

In addition, the batter has an effect that can be more stable swing practice to the batter by eliminating the uncomfortable feeling and inconvenience in handling coming from the appearance of the conventional golf club attached to the pressing means.

Therefore, the practice golf club according to the present invention is prevented from applying excessive force to the grip that is easy for the beginner to commit during the downswing can improve the accuracy of the impact and the distance of hitting the ball.

Claims (3)

In the golf club is connected to the shaft that the grip of the hitter's hand and the head to impact the golf ball, Both ends are fixed to the head neck protrusion 72 of the shaft 60 and the head 70, respectively, the head neck 71 is pressurized and fixed by an elastic force, and when the down swing is extended, the down swing is completed, Head stretching means (80) for restoring the head (70) to its original position; One end is fixed to the shaft 60, the bending prevention means (65) for preventing the head 70 from being bent to one side during the Plowslow operation after the impact operation of the golf ball; training golf club comprising a. The method of claim 1, Both ends are fixed to one side of the head stretching means 80 and the head neck 71 so that when the force is applied to the grip 100 during the downswing, it is bent to the opposite side of the bending preventing means 65 by elastic force. Practice golf club, characterized in that it further comprises a pair of semi-elliptic bending means (66a, 66b). The method according to claim 1 or 2, The head expansion and contracting means (80) includes a housing (61) having one end fixed to the shaft (60); A housing cap 63 screwed to the housing 61 to shield the inside of the housing from the outside; An elastic spring 67 mounted on an outer circumference of the T-shaped pin 62 in the interior of the housing 61 and generating an elastic force to reciprocate the T-shaped pin 62; It is installed to surround the housing 61 and the housing cap 63 is practiced, characterized in that consisting of bellows (64) made of rubber or urethane material to protect the housing 61 and the housing cap 63 Golf clubs.