JPH0527962Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to a golf swing training machine suitable for practicing golf swings.

[Conventional technology]

Conventional products of this type include a practice machine for swing correction or a weighted club head, and
There are practice golf clubs that have a model grip attached to the club shaft, or practice golf clubs that have an indicator attached to the club head that shows head speed and flying distance. The reality is that he was practicing his swing.

[Problem that the idea aims to solve]

In such conventional products, first of all, in training aircraft,
It is extremely difficult to learn a golf swing that suits the user due to the relationship between the basic arm swing and body movement. Therefore, there has been a problem in that general golfers use such practice machines very infrequently, and even if they do, few continue to use them for a long period of time. In addition, it is difficult to learn the timing of a swing when practicing swings using a competition golf club or a similar practice golf club that displays head speed and flight distance. Simply practicing a practice swing does not give the same feel and sound as when actually hitting a ball, which causes problems such as a loss of interest in swing practice. This idea was made to solve the above problems, and even with a full swing that is a smaller control shot than the original, it is possible to obtain a hitting sound that is louder than the actual hitting sound and a feeling of impact. This allows you to feel the timing of the arm swing and body movement at the location where the impact sound is generated, which in turn allows you to create swings where the impact sound is generated in the impact zone (in front of the body or inside the stance). To provide a golf swing training machine that allows general golfers to check their swing and modify their swing even indoors, and allows even beginners to easily understand and enjoy swing practice.

[Means to solve the problem]

The golf swing training machine according to this invention includes an adjustment nut loosely fitted on the tip side of a club shaft having a grip at the end thereof, and a small-diameter stepped inner step annular shape that can come into contact with the tip of the adjustment nut. a shot hammer having an integral wall portion and loosely fitted to the tip side of the club shaft so as to be freely movable in the axial direction;
a sleeve that integrally has a step-like small diameter cylindrical part on the distal end side and is fitted to the tip side of the club shaft and inserted into the shot hammer; and an outer periphery of the small diameter cylindrical part of this sleeve. a head retaining ring made of an elastic material fitted to the sleeve, a biasing means fitted to the outside of the sleeve to bias the shot hammer in a backward direction, and a hammer screwed and fixed to the tip of the club shaft. and a shot bolt for preventing removal, the adjustment nut being screwed onto the outer periphery of the small-diameter cylindrical portion of the sleeve, and the adjusting nut regulating the retreating position of the shot hammer,
The head retaining ring is pressed to bring it into moderate frictional engagement with the inner circumferential surface of the shot hammer, and the centrifugal force of the club shaft causes the shot hammer to engage the adjustment nut against the biasing means. The sleeve is configured to move forward between the shot bolt, and the tip of the sleeve is integrally formed with an outer flange portion having a diameter larger than the inner diameter of the inner annular wall portion of the shot hammer. A large diameter hole at the tip, which has a diameter larger than the outer diameter of the head of the shot bolt, is provided coaxially with the inner annular wall.

[Effect]

According to this invented golf swing training machine,
When the clubshaft is not swinging, the shot hammer is held in a backward position by the biasing means, and when the clubshaft is swung, the shot hammer moves forward against the biasing means due to the centrifugal force, and its centrifugal At the position of maximum force action (hitting position),
By colliding the shot hammer with the head of the shot bolt at the tip of the club shaft, it is possible to obtain a hitting sound and a feeling that is louder than the actual hitting sound. Furthermore, the adjustment nut regulating the retracted position of the shot hammer presses and deforms the head retaining ring so that the head retaining ring is appropriately frictionally engaged with the inner circumferential surface of the shot hammer. By rotating the adjustment nut, the frictional resistance of the head retaining ring against the inner circumferential surface of the shot hammer can be adjusted, thereby adjusting the arm strength of the user and the size of the swing from the full shot to the control shot. The timing at which the impact sound is generated in the impact zone can be adjusted accordingly. As a result, the user can easily learn the appropriate swing that generates the impact sound in the impact zone and perform a swing check as described above. Furthermore, since an outer flange having a larger diameter than the inner annular wall of the shot hammer is integrally formed at the tip of the sleeve, even if the head of the shot bolt is damaged due to repeated swinging of the club shaft, In this case, since the outer flange abuts and engages with the inner annular wall portion of the shot hammer through the biasing means, the biasing means and the shot hammer do not fly out from the club shaft. , Therefore, safety can also be ensured.

【Example】

An embodiment of this invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an assembled state of a golf swing training machine according to an embodiment of the invention, and FIG. 2 is an exploded view of the same. In the figure, reference numeral 1 denotes a club shaft, and an adjustment nut 2 is fitted into the tip end of the club shaft 1. The adjusting nut 2 has a through-cylindrical shape with a tapered end portion 2a and a female thread 2b carved on the inner circumferential surface. Next, a shot hammer 3 is loosely fitted onto the tip side of the club shaft 1 so as to be movable in the axial direction. This shot hammer 3 has a large diameter hole 30 at the tip.
The small diameter step wall 32 has a front end step 33 and a rear end step 34. Further, a sleeve 4 interposed between the club shaft and the shot hammer 3 is fitted. This sleeve 4 has an outer flange 41 integrated with the tip of the large-diameter sleeve wall, a pin insertion hole 42 opened in the large-diameter sleeve wall, and an integrally formed rear end of the large-diameter sleeve wall. The outer peripheral surface of the small diameter cylindrical portion 43 is formed with a male thread. Further, an elastically deformable head holding ring 5 made of an elastic material such as polyurethane is fitted into the small diameter cylindrical portion 43. Further, a spring (biasing means) 6 is fitted onto the sleeve 4. Here, the outer diameter of the large-diameter sleeve wall of the sleeve 4 is equal to the small-diameter stepped wall portion 3 of the shot hammer 3.
It is formed to have approximately the same diameter as the inner diameter of No. 2 or a slightly smaller diameter. Then, the adjusting nut 2 is screwed onto the external threaded portion of the small diameter cylindrical portion 43 of the sleeve 4, and the adjusting nut 2 appropriately presses and deforms the head retaining ring 5 with its tapered tip portion 2a to hold the head. The ring 5 is attached to the small diameter stepped wall portion 32 of the shot hammer 3.
It is frictionally engaged with the inner peripheral surface. Here, the shot hammer 3 is urged backward by the spring 6, so that the rear end step 34 of the small diameter step wall 32 of the shot hammer 3 is pushed back.
comes into contact with the tip of the adjustment nut 2, thereby restricting the retracted position of the shot hammer 3. A shot bolt 7 is screwed into the tip of the club shaft 1. This shot bolt 7 has a head 7a which is smaller in diameter than the inner diameter of the large diameter hole 30 at the tip of the shot hammer 3 and larger in diameter than the inner diameter of the inner step 31 at the tip of the shot hammer 3, and has a screw shaft portion. is provided with a locking screw hole 7b. Therefore, while the shot bolt 7 is screwed onto the tip of the club shaft 1, the lock pin 8 (see FIG. 1) is screwed into the lock screw hole 7b, and thereby the club shaft 1 The sleeve 4 and shot bolt 7 are integrally locked. Next, the operation will be explained. When the club shaft 1 is swung, the shot hammer 3 moves forward against the spring 6 due to the centrifugal force, and at the position where the centrifugal force is at its maximum (ball hitting position), the shot hammer 3 is attached to the head 7a of the shot bolt 7 at the tip of the club shaft. When the Yotsutohammer 3 collides, the impact sound is emitted. As a result, it is possible to obtain a hitting sound and a feeling that are greater than the actual hitting sound. Furthermore, by adjusting the rotation of the adjusting nut 2, the frictional resistance of the head retaining ring 5 against the inner peripheral surface of the shot hammer 3 can be adjusted. Users can freely adjust the timing at which the impact sound is generated in the impact zone by swinging from a full shot to a control shot according to their arm strength, allowing them to learn the appropriate swing that suits them and conduct swing checks. can be done easily. Further, even if the head of the shot bolt 7 should be damaged due to repeated swings of the club shaft 1, the front end inner step of the shot hammer 3 can be fixed to the outer flange 41 of the sleeve 4 via the spring 6. 33 are brought into contact and engagement, so
There is no danger that the spring 6 and shot hammer 3 will fly out from the club shaft 1, and safety can be ensured.

[Effect of the idea]

As described above, according to this invention, the sleeve, the elastic head retaining ring, the urging means such as a spring, and the shot hammer can be made into a unit in advance, and the sleeve of this unit can be attached to the club shaft. It can be easily and skillfully assembled by simply fitting it into the outer periphery of the tip side and screwing a shot bolt onto the tip of the club shaft. When the clubshaft swings, the shot hammer collides with the head of the shot bolt, producing a hitting sound. Moreover, the shot hammer is formed with a large-diameter hole at the tip having a diameter larger than the outer diameter of the head of the shot bolt, and the peripheral wall of the large-diameter hole at the tip prevents the shot hammer from colliding with the head of the shot bolt. The skirt portion covers the head of the shot bolt, and the skirt portion effectively resonates the collision sound between the shot bolt and the shot hammer, thereby producing a pleasant hitting sound equivalent to the sound of an actual ball being hit indoors. Obtainable. Additionally, the adjustment nut can be rotated with bare hands. For example, when making a strong full swing, if the head retaining ring is strongly compressed by rotating the adjusting nut with your bare hands, the frictional resistance of the shot hammer due to the head retaining ring will increase. Frictional resistance suitable for full swing can be obtained. In this case, even if the shot hammer cannot be returned by a biasing means such as a spring after the full swing, the shot hammer can be pulled back with bare hands. This makes it easy to repeatedly practice and master swings that produce the same head speed, and from full shots to control shots, you can enjoy the same response and impact as when actually hitting the ball at the impact dawn of the swing. It can generate sound, and has the effect of allowing the rhythm of the swing and the timing of impact to be adjusted according to the user's skill, physical strength, gender, age, etc. Therefore, it is possible to learn an appropriate swing that matches the user and perform a swing check, and it can be used easily by a wide range of players, from beginners to advanced players, and has the effect of helping to relieve the stress of golfers. be. Furthermore, even if the head of the shot bolt is damaged due to repeated swinging of the club shaft, an outer flange portion having a diameter larger than the inner annular wall portion of the shot hammer is integrally formed at the tip of the sleeve; Since the inner annular wall portion of the shot hammer abuts and engages with this outer flange via the biasing means,
There is no danger that the biasing means and shot hammer will fly out from the club shaft, and an excellent effect in terms of safety can be obtained.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an assembled state of a golf swing training machine according to an embodiment of the invention, and FIG. 2 is an exploded view of the same. 1... Club shaft, 2... Adjustment nut, 3
...Shot hammer, 4...Sleeve, 5...
Head retaining ring, 6... Spring (biasing means), 7... Shot bolt, 32... Small diameter stepped wall portion, 43... Small diameter cylindrical portion.

Claims (1)

[Scope of utility model registration request] A clubshaft having a grip at the distal end, an adjustment nut loosely fitted on the tip side of the clubshaft, and an inner step annular wall portion with a small diameter step that can come into contact with the tip of the adjustment nut are integrated. a shot hammer that is loosely fitted on the tip side of the club shaft so as to be freely movable in the axial direction; and a shot hammer that integrally has a step-like small diameter cylindrical portion on the distal end side and is fitted on the tip side of the club shaft. and a sleeve inserted into the shot hammer, a head retaining ring made of an elastic material fitted around the outer periphery of the small diameter cylindrical part of the sleeve, and a head retaining ring made of an elastic material fitted onto the sleeve to hold the shot hammer. comprising a biasing means for biasing in the backward direction, and a shot bolt for preventing the hammer from coming off, which is screwed and fixed to the tip of the club shaft,
The adjusting nut is screwed onto the outer periphery of the small diameter cylindrical portion of the sleeve, and the adjusting nut regulates the retreating position of the shot hammer, and also presses the head retaining ring to tighten the inner peripheral surface of the shot hammer. The shot hammer can be moved forward between the adjusting nut and the shot bolt by moderate frictional engagement and by the centrifugal force of the club shaft, against the biasing means, and the tip of the sleeve has a An outer flange portion having a diameter larger than the inner diameter of the inner annular wall portion of the shot hammer is integrally formed, and the shot hammer has a tip large diameter hole portion having a larger diameter than the head outer diameter of the shot bolt. A golf swing training machine characterized by being formed coaxially with an annular wall part.