JP2022076033A - Golf swing practice apparatus - Google Patents

Abstract

To provide a golf swing practice apparatus allowing a user to effectively practice a closed clubface at the backswing, the closed clubface at the top of the swing and shallowing at the downswing.SOLUTION: A golf club practice apparatus includes a shaft, a grip provided at one end of the shaft, a cylindrical member provided at the other end of the shaft and including a cylinder part provided orthogonal to the longitudinal direction of the shaft, and a slide member to be inserted in the cylinder part. The slide member includes a rod body having an outside diameter smaller than the inside diameter of the cylinder part, slidably inserted into the cylinder part, and two weights having an outside diameter larger than the inside diameter of the cylinder part, provided at both ends of the rob body. Preferably, the slide member starts sliding, when the axial direction of the cylindrical member is inclined 10° or more with respect to the horizontal direction such that a side of the rod body appearing from the end of the cylindrical part is located upward.SELECTED DRAWING: Figure 1

Description

The present invention relates to a golf swing practice tool.

In order to improve golf, it is effective to take lessons by a professional coach, but not only that, regular training is important, and equipment that allows the user to practice golf swing alone is desired. There is.
As a technique that allows the user to confirm whether or not an accurate swing is made by himself / herself, a swing correction tool in which a hole is formed in the club head at a right angle to the axis and a balance rod is slidably inserted is known. (See Patent Document 1). In the swing correction tool disclosed in Patent Document 1, stoppers are provided on both sides of the balance rod, and the stoppers hit the head during the swing, and an impact sound is generated at that time. By confirming the impact sound, the user can confirm whether or not his / her swing is performed accurately.
However, the swing orthodontic appliance disclosed in Patent Document 1 does not consider shallowing, which has been attracting attention in recent years, and has a problem that it is not effective for practicing shallowing.

The volume of the conventional driver head (more than 20 years ago) is as small as 160 to 200 cc, and according to the conventional golf theory, the distance of the center of gravity of the head is short, and the face surface faces directly to the side in the backswing (halfway back) (square face). ) Was the mainstream. That is, the conventional swing is a swing with many face rotations.
On the other hand, in recent years, the volume of the driver bed is generally 440 to 460 cc, and in order to cope with this, the swing of the shut face that raises the face surface while turning it downward without opening the face surface by the backswing is the mainstream. It has become. Specifically, in the half-way back position of the backswing, when the front direction of the user is 0 °, the angle at which the face surface faces downward is 20 ° or more.
Even in the top of swing, swings with the face surface facing upward (diagonal 45 to 60 °) have become mainstream, and the swing has changed to a swing that can be handled by a large head.
Accordingly, the downswing has changed to a swing that suppresses face rotation while tilting the shaft (shallowing).
However, in the swing correction tool disclosed in Patent Document 1, no consideration is given to shallowing in which a downswing is performed while tilting the shaft.

As a technique for facilitating practice related to shallowing, a shallow plane swing practice device that produces sound is known (see Patent Document 2). The practice equipment disclosed in Patent Document 2 is used by being attached to an existing golf club, and has an angle indicator that can confirm the tilt of the shaft and a sound tube that makes a sound when the tilt of the shaft exceeds a certain range. Be prepared. Two hard balls are provided inside the sound cylinder, and it is assumed that the shaft can be confirmed to fall by the impact sound generated when the balls collide with the end of the sound cylinder.
In order to practice shallowing, it is necessary not only to confirm the fall of the shaft, but also to be aware of the fall of the shaft in the downswing. And, in order to be aware of the downswing by tilting the shaft, it is effective not only to inform by sound but also to convey it as a touch to the hand holding the club.
However, in the practice equipment disclosed in Patent Document 2, although it is possible to confirm the tilting of the shaft by sound, there is a problem that the tilting of the shaft cannot be transmitted as a touch to the hand holding the club.

In addition, as mentioned above, in order to effectively practice swings that can be handled by large heads,
There is a demand for a practice tool that can effectively practice not only the downswing but also the backswing and the top of swing on the shut face.

Jitsuzensho 60-153174 Utility Model Registration No. 3228037 Gazette

In view of such a situation, it is an object of the present invention to provide a golf swing practice tool capable of effectively practicing a shut face in a backswing, a shut face in a top of swing, and shallowing in a downswing. ..

In order to solve the above problems, the golf swing practice tool according to the first aspect of the present invention is a golf swing practice tool, which is provided with a shaft, a grip provided at one end of the shaft, and the other end of the shaft. A cylinder member having a cylinder portion provided so as to be orthogonal to the longitudinal direction of the shaft and a sliding member inserted through the cylinder portion are provided, and the sliding member is a rod body having an outer diameter smaller than the inner diameter of the cylinder portion. Two weights, which are slidably inserted into the portion and have an outer diameter larger than the inner diameter of the tubular portion, are provided at both ends of the rod body.
By providing weights at both ends of the rod body and having a structure in which the sliding member slides in the cylinder portion, the position of the center of gravity of the golf swing practice tool can be easily changed by tilting the shaft.
Further, since the weight has an outer diameter larger than the inner diameter of the cylinder portion, the weight acts as a stopper, and when the weight collides with the end portion of the cylinder portion, an impact sound and an impact are generated. This makes it possible to inform the user whether or not an appropriate swing is being made by the sound and the feel of the impact transmitted to the grip.

Specifically, first, in the backswing, when the takeback with the face closed is performed, the sliding member slides smoothly toward the face side, and the takeback with the face open is compared with the case where the takeback is performed. Impact noise and impact are generated at an early timing. This makes it possible to confirm that the face is closed and the takeback is completed. Further, when the face is closed and the takeback is performed, the longitudinal direction of the sliding member is substantially parallel to the traveling direction of the tubular member, so that the center of gravity is on the face surface in the hand of the user who grips the grip. The feeling of moving to the side is transmitted, and it can be confirmed that the face is closed at this point as well.

Next, in the top of swing, when the face faces upward, the sliding member quickly slides from the upper side to the lower side. As a result, the weight on the face side and the end of the cylinder collide with each other, and an impact sound and an impact are generated. In addition, the weight felt by the grip becomes lighter for a moment while the sliding member is sliding, and becomes heavier after sliding. In this way, it can be confirmed that the face is facing upward in the top of swing due to the sound, impact, change in weight, or the like.
Further, in the top of swing, when the weight collides with the end of the cylinder portion, the impact causes the shaft to fall backward of the user. In this way, since the shaft falls due to the impact each time the top of swing is performed, the user can naturally acquire the action of tilting the shaft in the downswing simply by repeating the swing practice.

When shallowing is performed in the downswing, the state in which the weight on the face side is in contact with the end of the cylinder is maintained until the impact or immediately before the impact. Immediately before the impact or impact, the traveling direction of the tubular member and the longitudinal direction of the sliding member become substantially parallel, the weight on the face side is pushed out from the end of the cylinder, and the weight on the back face is pushed out from the end of the cylinder by inertia. Collide with. In the event of a collision, impact noise and impact are generated. If the shallowing is performed accurately, the impact sound and the impact are generated immediately before the impact or the impact. Therefore, it can be confirmed from the timing when the impact sound and the impact are generated whether the shallowing is performed accurately.

The tubular portion provided in the tubular member is provided so as to be orthogonal to the longitudinal direction of the shaft, but the position where it is provided does not necessarily have to be provided on the extension line of the shaft, and is on the toe side or the heel side of the extension line of the shaft. It may be provided at the position of. Therefore, for example, when a dummy head described later is provided, it may be provided immediately below the dummy head.
For the shaft and grip, known materials used for golf clubs can be used. The tubular member is preferably made of a hard resin, and specifically, general-purpose plastics such as polyethylene, polypropylene, polyvinyl chloride, and polystyrene are preferably used, but polycarbonate, polyethylene terephthalate, polybutylene terephthalate, and ultra-high Engineering plastics such as molecular weight polyethylene may be used. The sliding member is preferably made of metal, more preferably stainless steel, in both the rod body and the weight.
It is preferable that a resin cushioning material is provided at the inner end of the weight that comes into contact with the end of the cylinder. Further, the total length of the golf swing training tool is preferably 500 mm or more, more preferably 550 to 700 mm. Since the total length is 550 to 700 mm, it is possible to make a golf swing practice tool with high portability while maintaining the function as a practice tool. In addition, in order to have a function as a practice tool, the length may exceed 700 mm.

The golf swing practice tool according to the second aspect of the present invention is a golf swing practice tool, the shaft, a grip provided at one end of the shaft, and the other end of the shaft so as to be orthogonal to the longitudinal direction of the shaft. It is provided with a through hole to be provided and a sliding member to be inserted through the through hole. As for the sliding member, a rod having an outer diameter smaller than the inner diameter of the through hole is slidably inserted into the through hole, and the inner diameter of the through hole is formed. Two weights with a larger outer diameter are provided at both ends of the rod.
By providing a through hole in the shaft itself without using a tubular member, a simpler and more compact shape can be obtained.

The golf swing practice tool according to the first aspect of the present invention slides when the axial direction of the cylinder member is tilted by 10 ° or more with respect to the horizontal direction so that the side where the rod body appears from the end of the cylinder portion faces upward. It is preferable that the moving member starts sliding.
With such a configuration, it is possible to effectively train backswing and top of swing with a closed face and shallowing in the backswing. If the sliding starts with an inclination of less than 10 °, the center of gravity moves with a slight inclination, which makes accurate training difficult. As a method for designating the specification that the sliding member starts sliding when tilted by 10 ° or more, the inner diameter of the cylinder portion and the outer diameter of the rod body may be adjusted, or the cylinder portion and the rod body come into contact with each other. The surface may be provided with fine irregularities or processed to be smoothed. Further, a member for adjusting the frictional force may be provided inside the cylinder portion.
In addition, "10 ° or more" means that the sliding member may start sliding when tilted at any angle of 10 ° or more. Therefore, for example, it is used to include the case where the sliding member starts sliding when tilted by 15 ° or more.

The golf swing practice tool according to the second aspect of the present invention slides when the axial direction of the through hole is tilted by 10 ° or more with respect to the horizontal direction so that the side where the rod body appears from the end of the through hole is upward. It is preferable that the moving member starts sliding.
With such a configuration, it is possible to effectively train backswing and top of swing with a closed face and shallowing in the backswing.

The golf swing training tool according to the first aspect of the present invention preferably has a dummy head made of a resin such as ABS (Acrylonitrile Butadiene Styrene) resin provided on the toe side of the tubular member.
By providing a dummy head, the image of the swing becomes easy and more realistic training becomes possible. Especially the address becomes easy. Since the dummy head is made of resin, the head becomes lightweight, it is difficult to feel the weight of the head itself, and the structure is such that the impact due to the sliding of the sliding member and the change in weight are easily felt. The resin used for the dummy head includes a wide range of natural resins and synthetic resins, and general-purpose plastics such as polyethylene, polypropylene, polyvinyl chloride, and polystyrene are preferably used, but thermosetting plastics such as polyurethane, silicon, melamine, and epoxy are preferably used. Alternatively, engineering plastics such as polycarbonate, polyethylene terephthalate, polybutylene terephthalate, and ultra-high molecular weight polyethylene may be used. Therefore, it is possible to apply various dummy heads having different elastic force, weight, etc. according to the user's needs. The shape of the dummy head may be a shape imitating the head shape of an actual golf club such as an iron or wood, or may be a deformed shape such as a simpler plate shape. It is preferable that the dummy head is provided with a marker that serves as a mark when addressing.

In the golf swing training tool according to the first aspect of the present invention, the weight of the weight is preferably 70 to 120 g, and the length of the tubular portion in the longitudinal direction is preferably 70 to 90 mm. By setting the weight of the weight and the length of the tubular portion in the longitudinal direction within the above ranges, the sliding member slides when it should slide, and slides when it should not slide during the swing. It can be a structure that does not move. As a result, the change in the center of gravity due to the movement of the weight, the impact, and the impact sound can be felt as needed and within the necessary range.

According to the golf swing practice tool of the present invention, there is an effect that the shut face in the backswing, the shut face in the top of swing, and the shallowing in the downswing can be effectively practiced.

Front view of the golf swing practice tool of Example 1 Right side view of the golf swing practice tool of Example 1. Explanatory drawing of golf swing practice tool of Example 1 Explanatory drawing 1 of sliding mechanism Explanatory drawing 2 of the sliding mechanism Image of use of the golf swing practice tool of Example 1 FIG. Image of use of the golf swing practice tool of Example 1 FIG. FIG. 3 is an image of using the golf swing practice tool of Example 1. FIG. 4 is an image of using the golf swing practice tool of Example 1. FIG. 5 is an image of using the golf swing practice tool of Example 1. FIG. 6 is an image of using the golf swing practice tool of Example 1. FIG. 7 is an image of using the golf swing practice tool of Example 1. Explanatory drawing of the sliding mechanism in takeback Front view of the golf swing practice tool of Example 2 Front view of the golf swing practice tool of Example 3 Explanatory drawing of the golf swing practice tool of Example 3

Hereinafter, an example of the embodiment of the present invention will be described in detail with reference to the drawings. The scope of the present invention is not limited to the following examples and illustrated examples, and many changes and modifications can be made.

FIG. 1 shows a front view of the golf swing practice tool of the first embodiment. As shown in FIG. 1, the golf swing practice tool 1 is composed of a tubular member 2, a sliding member 3, a shaft 4, a grip 5, and a dummy head 6. Specifically, a grip 5 is provided at one end of the shaft 4, and a tubular member 2 and a sliding member 3 are provided at the other end. A dummy head 6 is provided on the tubular member 2. The sliding mechanism including the tubular member 2 and the sliding member 3 will be described later.

FIG. 2 shows a right side view of the golf swing practice tool of the first embodiment. As shown in FIG. 2, in the golf swing practice tool 1, a dummy head 6 imitating the shape of an iron head is attached to the tubular member 2. Since the dummy head 6 is made of a lightweight resin, it is difficult to feel the weight of the dummy head 6 itself, and the structure is such that the impact due to the sliding of the sliding member 3 and the change in weight are easily felt.
The length L ₁ of the golf swing practice tool 1 is 600 mm, which is shorter than that of a normal golf club. Therefore, it can be carried in a bag other than a golf bag, and it is also possible to easily practice swinging indoors.
The dummy head 6 does not exist to actually hit the ball, but is intended to facilitate the image of the swing, and particularly facilitates addressing. The dummy head 6 is provided with a marker 6a, so that the orientation of the tubular member 2 can be easily confirmed when the grip 5 is gripped and addressed.

Next, in the golf swing practice tool 1, a mechanism in which the sliding member 3 slides in the tubular member 2 will be described. FIG. 3 is an explanatory diagram of the golf swing practice tool of the first embodiment, and shows an enlarged view of the tubular member 2 and the sliding member 3 shown in FIG. As shown in FIG. 3, the tubular member 2 is composed of a tubular portion 2a and a mounting portion 2b, and the tubular portion 2a is provided with a through hole 2c. The tubular member 2 is attached to the shaft 4 by the attachment portion 2b. The sliding member 3 is composed of a rod body 7 and weights (8a, 8b), and the rod body 7 is inserted into a through hole 2c of the tubular portion 2a. Since the inner diameter φ 1 of the cylinder portion 2a, that is, the diameter φ ₁ of the through hole 2c is 10.1 mm, and the outer diameter φ ₂ of the rod body 7 is 10 mm, the rod body 7 is slidable in the cylinder portion 2a. .. Further, weights (8a, 8b) are provided at both ends of the rod body 7. The rod body 7 and the weights (8a, 8b) are made of stainless steel, and the weights of the weights (8a, 8b) are 100 g, respectively. The length L ₂ from the end 2d to the end 2e of the tubular portion 2a is 80 mm, the length L ₃ of the rod body 7 is 166 mm, and the length L ₄ of the sliding member 3 is 225 mm.

A resin cushioning material (11a, 11b) is attached to the inside of the weight (8a, 8b). The cushioning material 11a is made of an elastic material, and has a function of softening an impact and an impact sound when the weight 8a collides with the end portion 2d of the tubular portion 2a. Similarly, the cushioning material 11b is also made of an elastic material, and has a function of softening an impact and an impact sound when the weight 8b collides with the end portion 2e of the tubular portion 2a. In addition, in the drawings other than FIG. 3, the illustration of the cushioning material (11a, 11b) is omitted, and the specific description is also omitted.

The golf swing practice tool 1 can slide the sliding member 3 by moving or tilting the tubular member 2 to the left or right. In FIG. 3, when the sliding member 3 moves to the left, the cushioning material 11a provided on the weight 8a stops when it comes into contact with the end portion 2d of the tubular portion 2a, and vice versa. When the member 3 moves to the right, the cushioning material 11b provided on the weight 8b stops when it comes into contact with the end portion 2e of the tubular portion 2a.
Although the sliding member 3 is provided with cushioning materials (11a, 11b), when the weight 8a and the end portion 2d or the weight 8b and the end portion 2e collide with each other, a certain amount of impact noise and impact are generated. Occur. The user can confirm whether or not the swing is accurate from the impact sound generated during the swing and the timing of the impact transmitted to the grip 5.
Further, the sliding member 3 has a function of changing not only the impact but also the weight felt by the grip 5. That is, by tilting the shaft 4 or rotating the shaft 4 about the axis, the tubular member 2 can be tilted, and as a result, the weight felt by the grip 5 can be changed.

The change in weight felt by the grip 5 will be described with reference to FIGS. 4 and 5. 4 and 5 show explanatory views of the sliding mechanism. FIG. 4 is a view in which the golf swing practice tool 1 in an upright position is tilted to the left and right when viewed from the front, FIG. 4 (1) shows a case where the golf swing practice tool 1 is tilted to the left, and FIG. 4 (2) shows a case where the golf swing practice tool 1 is tilted to the right. ing. Further, FIG. 5 is a view in which the golf swing practice tool 1 in a laid state is tilted to the left and right when viewed from the grip 5 side when the golf swing practice tool 1 is lifted substantially horizontally, and FIG. 5 (1) is shown. Shows the case of tilting to the left, and FIG. 5 (2) shows the case of tilting to the right. In FIGS. 4 and 5, the angle θ is 45 °.

As shown in FIG. 4 (1), when the golf swing practice tool 1 in an upright position is tilted to the left by 45 °, the sliding member 3 slides to the lower left, and the weight 8a hits the end 2d of the tubular portion 2a. Touch and stop. When the sliding member 3 slides to the lower left, the user who grips the grip 5 can feel as if the center of gravity is applied to the back face side of the dummy head 6 due to the gravity of the weight and the principle of leverage.
On the other hand, as shown in FIG. 4 (2), when the golf swing practice tool 1 in an upright position is tilted 45 ° to the right, the sliding member 3 slides to the lower right and the weight 8b is the tubular portion 2a. It comes into contact with the end 2e of the golf course and stops. When the sliding member 3 slides to the lower right, the user who grips the grip 5 can feel as if the center of gravity is applied to the face side of the dummy head 6 due to the gravity of the weight and the principle of leverage.

The structure in which the sliding member 3 slides when tilted at a predetermined angle or more is the same in any direction. For example, as shown in FIG. 5 (1), when the golf swing practice tool 1 in a laid state is tilted to the left by 45 ° when viewed from the grip 5 side, the sliding member 3 slides to the lower left and the weight 8b It comes into contact with the end 2e of the cylinder 2a and stops. When the sliding member 3 slides to the lower left, the user who grips the grip 5 can feel that the grip is twisted counterclockwise due to the gravity of the weight and the principle of leverage.
On the other hand, as shown in FIG. 5 (2), when the golf swing practice tool 1 in the laid state is tilted 45 ° to the right when viewed from the grip 5 side, the sliding member 3 slides to the lower right. , The weight 8a abuts on the end 2d of the tubular portion 2a and stops. When the sliding member 3 slides to the lower right, the user who grips the grip 5 can feel that the grip is twisted clockwise due to the gravity of the weight and the principle of leverage.

In the golf swing practice tool 1 of the present embodiment, the frictional force between the cylinder portion 2a and the rod body 7 is set so that the angle at which the sliding member 3 starts to slide is 10 ° when the cylinder member 2 is slowly tilted. Is designing.

Next, a swing practice using the golf swing practice tool 1 of the first embodiment will be described with reference to FIGS. 6 to 13.
6 to 12 show an image diagram of using the golf swing practice tool of the first embodiment. Specifically, FIG. 6 is an address, FIG. 7 is a takeback in the backswing, FIG. 8 is a backswing, FIG. 9 is a top of swing before sliding of the sliding member 3, and FIG. 10 is a top of swing. After sliding the sliding member 3, FIG. 11 shows a downswing, and FIG. 12 shows an impact state.

(About the address)
As shown in FIG. 6, first, the user 9 grips the grip 5 and makes an address in a state where the weight 8a is in contact with the end portion 2d. Here, the address is performed using the marker 6a shown in FIGS. 2 and 3 as a marker. By setting the weight 8a in contact with the end 2d at the address, it is possible to accurately confirm whether or not the face is closed in the takeback shown in FIG.

(About backswing)
13A and 13B are explanatory views of the sliding mechanism in takeback, where (1) is the state at the time of addressing, (2) is the state where the face is closed and takeback is performed, and (3) is the state where the face is open. It shows the state of taking back. Note that FIGS. 13 (1) to 13 (3) are plan views.
As shown in FIG. 13 (1), by setting the weight 8a in contact with the end 2d at the address, the distance P between the weight 8b and the end 2e becomes the widest, and the tubular member is in the takeback. It is possible to accurately confirm whether or not the sliding mechanism including the sliding member 2 and the sliding member 3 is functioning. That is, as shown in FIG. 13 (2), when the face is closed for takeback, the tubular member 2 moves to the left in accordance with the takeback, but the sliding member 3 moves to the left due to inertia. The weight 8b and the end 2e collide with each other in order to stay in the position. In the event of a collision, an impact sound and impact are generated, and the weight felt by the grip changes. When the face is closed for takeback, the sliding member 3 slides smoothly in the tubular portion 2a, so that the impact sound and impact are louder than when the face is open for takeback. .. Further, since the longitudinal direction of the sliding member 3 is parallel to the traveling direction of the tubular member 2, the user 9 holding the grip 5 quickly feels that the center of gravity has moved to the face surface side. It will be transmitted.

On the other hand, as shown in FIG. 13 (3), when the takeback is performed so that the face opens, the tubular member 2 moves to the left in accordance with the takeback, but the sliding member 3 Will be slightly caught in the tubular member 2 and will not slide smoothly. Therefore, depending on the angle at which the face opens, the weight 8b and the end portion 2e do not come into contact with each other, or even if they come into contact with each other, the timing of collision is delayed. The impact is small. Further, since the sliding member 3 is slanted with respect to the traveling direction of the tubular member 2, a weight that is twisted around the axis of the shaft 4 is applied to the hand of the user 9 who grips the grip 5.
In this way, the user 9 can easily confirm whether or not the takeback with the face closed is possible due to the impact sound in the takeback, the difference in the weight felt by the impact or the grip, and the like.

As shown in FIG. 8, in the backswing after takeback, the weight 8b shifts to the top of swing in a state of being in contact with the end portion 2e. In the half-way back position of the backswing, when the front direction of the user 9 is 0 °, the face surface faces downward at an angle of about 20 ° or more to form a shut face.

(About Top of Swing)
As shown in FIG. 9, in the top of swing with the shut face, the face surface of the dummy head 6 faces upward, so that the sliding member 3 moves downward due to gravity, and the weight 8a is as shown in FIG. Collision with the end 2d. At the time of a collision, an impact sound and an impact are generated, and the weight felt by the grip 5 changes.
In the top of swing, when the face surface faces upward, the sliding member 3 slides smoothly in the tubular portion 2a, so that the face surface faces diagonally upward or sideways, so that the sliding member 3 slides smoothly in the tubular portion 2a. Impact noise and impact become louder. Further, the weight felt by the grip 5 becomes lighter for a moment while the sliding member 3 is sliding, and becomes heavier after sliding.
On the other hand, when the face surface faces diagonally upward or sideways, the sliding member 3 does not slide in the tubular portion 2a or slides slowly, so that the face surface faces upward. Impact noise and impact will be smaller or less than in the case of. Further, regarding the weight felt by the grip 5, it becomes difficult to feel the change in the weight of the sliding member 3 before and after sliding.
In this way, the user 9 can easily confirm whether or not the top of swing with the face surface facing upward is formed by the impact sound in the top of swing, the difference in the weight felt by the impact or the grip, and the like.

Further, as shown in FIG. 10, in the top of swing, the weight 8a collides with the end portion 2d, and the impact causes the shaft 4 to fall. In this way, since the shaft 4 is tilted by the impact every time the top of swing is performed, the user 9 can naturally acquire the motion of tilting the shaft 4 in the downswing only by repeating the swing practice.

(About downswing)
As shown in FIG. 11, in the downswing in which shallowing is performed, the state in which the weight 8a is in contact with the end portion 2d is maintained until the impact or immediately before the impact. By maintaining the state in which the weight 8a is in contact with the end portion 2d, it is possible to perform a downswing in a state where the shaft 4 is tilted, and it is possible to acquire a feeling of shallowing by a natural movement.
Then, immediately before the impact or impact, the traveling direction of the tubular member 2 and the longitudinal direction of the sliding member 3 become substantially parallel, the weight 8a is pushed out by the end portion 2d, and the weight 8b collides with the end portion 2e due to inertia. In the event of a collision, impact noise and impact are generated.
If shallowing is performed accurately, an impact sound and an impact are generated at or immediately before the impact. On the other hand, for example, when the impact sound and the timing at which the impact is generated are earlier than immediately before the impact, it can be seen that accurate shallowing is not performed.

(About impact)
As shown in FIG. 12, in the impact state, the weight 8b is in contact with the end portion 2e. In this embodiment, an example in which the weight 8b collides with the end portion 2e immediately before the impact or the impact has been described, but the weight 8b may collide with the end portion 2e after the impact depending on the swing speed of the user 9. ..

As described above, according to the golf swing practice tool 1 of the present embodiment, it is possible to easily determine whether or not an accurate swing is achieved for any of the backswing, the top of swing, and the downswing.

FIG. 14 shows a front view of the golf swing practice tool of the second embodiment. As shown in FIG. 14, the golf swing practice tool 1a is composed of a tubular member 20, a sliding member 3, a shaft 4, and a grip 5. Similar to the first embodiment, the grip 5 is provided at one end of the shaft 4, and the tubular member 20 and the sliding member 3 are provided at the other end. However, unlike the first embodiment, the tubular member 20 is not provided with the dummy head 6. Therefore, the golf swing practice tool 1a has a simpler structure than the golf swing practice tool 1, and has a structure of low cost and improved portability. Further, the cylinder member 20 is provided with a marker 2f, which can be used as a mark at the time of addressing.

FIG. 15 shows a front view of the golf swing practice tool of the third embodiment. As shown in FIG. 15, the golf swing practice tool 1b is composed of a sliding member 30, a shaft 40, and a grip 5. Similar to Example 1 or 2, a grip 5 is provided at one end of the shaft 40. However, the tubular member (2, 20) is not provided at the other end of the shaft 40.
FIG. 16 shows an explanatory diagram of the golf swing practice tool of the third embodiment. As shown in FIG. 16, a through hole 40b is provided at the other end of the shaft 40. The sliding member 30 is composed of a rod body 70 and weights (80a, 80b), and the rod body 70 is inserted through the through hole 40b.

In the golf swing practice tool 1b of the third embodiment, since the rod body 70 is directly inserted into the shaft 40 without using the tubular member (2, 20), the length of the through hole 40b provided is shortened, and the length of the through hole 40b is shortened. With the same configuration as above, the inserted rod 70 may not slide smoothly.
Therefore, the diameter φ ₃ of the through hole 40b is provided larger than the diameter φ ₁ of the through hole 2c, and the outer diameter φ ₄ of the rod 70 is provided larger than the outer diameter φ ₂ of the rod 7. Further, the length L ₅ of the rod body 70 is provided shorter than the length L ₃ of the rod body 7, and the length L ₆ of the sliding member 30 is also shorter than the length L ₄ of the sliding member 3. It is provided. With such a configuration, the rod body 70 slides smoothly in the through hole 40b.
The golf swing practice tool 1b has a simpler structure than the golf swing practice tool (1,1a), and has a structure of lower cost and higher portability. Further, the shaft 40 is provided with a marker 40a, which can be used as a mark at the time of addressing.

(Other examples)
1) Unlike the first embodiment, the golf swing practice tool of the present invention may have a length substantially equal to that of an actual golf club.
2) The weight 8a and the weight 8b may have different weights.
3) The length L ₂ of the tubular portion 2a is not limited to the same length on the left and right with respect to the shaft 4, and the length of either one up to the end portion (2d, 2e) may be provided longer or shorter. ..
4) The shape of the dummy head 6 is not limited to the iron, and a known club head shape can be widely applied, and may be, for example, a driver shape. Further, a simple plate shape or the like in which the shape of the club head is deformed may be used.
5) Unlike the first embodiment, the tubular portion 2a of the tubular member 2 may be provided so as to be located immediately below the dummy head 6.

The present invention is useful as a practice tool for golf swings.

1,1a, 1b Golf swing practice tool 2,20 Cushioning member 2a Cushioning part 2b Mounting part 2c, 40b Through hole 2d, 2e End part 2f, 6a, 40a Marker 3,30 Sliding member 4,40 Shaft 5 Grip 6 Dummy Head 7,70 Bar 8a, 8b, 80a, 80b Weight 9 User 11a, 11b Cushioning material 12 Ground L Length P Spacing θ Angle φ Diameter

Claims (6)

It ’s a golf swing practice tool,
With the shaft
A grip provided at one end of the shaft and
A tubular member provided at the other end of the shaft and having a tubular portion provided so as to be orthogonal to the longitudinal direction of the shaft.
A sliding member, which is inserted into the cylinder portion, is provided.
The sliding member is
A rod having an outer diameter smaller than the inner diameter of the cylinder portion is slidably inserted into the cylinder portion.
A golf swing practice tool characterized in that two weights having an outer diameter larger than the inner diameter of the tubular portion are provided at both ends of the rod body. It ’s a golf swing practice tool,
With the shaft
A grip provided at one end of the shaft and
A through hole provided at the other end of the shaft so as to be orthogonal to the longitudinal direction of the shaft,
A sliding member, which is inserted through the through hole, is provided.
The sliding member is
A rod having an outer diameter smaller than the inner diameter of the through hole is slidably inserted into the through hole.
A golf swing practice tool characterized in that two weights having an outer diameter larger than the inner diameter of the through hole are provided at both ends of the rod body. When the axial direction of the tubular member is tilted by 10 ° or more with respect to the horizontal direction so that the side where the rod body appears from the end of the tubular portion faces upward, the sliding member starts sliding. The golf swing practice tool according to claim 1. When the axial direction of the through hole is tilted by 10 ° or more with respect to the horizontal direction so that the side where the rod appears from the end of the through hole faces upward, the sliding member starts sliding. The golf swing practice tool according to claim 2. The golf swing practice tool according to claim 1 or 3, wherein a resin dummy head is provided on the toe side of the tubular member. The weight of the weight is 70 to 120 g, and the weight is 70 to 120 g.
The golf swing practice tool according to any one of claims 1, 3 and 5, wherein the length of the tubular portion in the longitudinal direction is 70 to 90 mm.

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