JP2024117902A - Golf practice equipment - Google Patents

Abstract

[Problem] To provide a golf practice tool that can contribute to improvement in golf while preventing a decline in interest. [Solution] A golf practice tool 1 comprises a club head 2, a socket 3, a shaft 4, a fixed grip 5, a cushioning material 6, and a movable grip 7 that is inserted onto the shaft 4. The movable grip 7 is always located between the socket 3 and the cushioning material 6 in the longitudinal direction of the shaft 4, and is provided so as to be slidable and rotatable. During "practice swings," by gripping only the fixed grip 5, the movable grip 7 collides with the socket 3, producing a collision sound and allowing the player to enjoy the feeling of impact. During "hitting a golf ball," by gripping both the fixed grip 5 and the movable grip 7, the player can not only strike the ball, but also check the degree of rotation of the movable grip 7 to correct his or her swing. [Selected Figure] Figure 4

Description

The present invention relates to a golf practice tool used during golf practice.

Conventionally, there are a wide variety of golf practice tools. For example, a wide variety of golf practice tools are known to meet the objectives of golf players, such as to experience the ideal swing movement, to visually check the direction and trajectory of the club head to correct one's own swing, or to stabilize the swing by strengthening the core.

As an example, there is a golf practice tool that allows you to experience a striking sensation similar to that of actually hitting a golf ball just by taking a practice swing (see, for example, Patent Document 1, etc.). This golf practice tool includes a shaft, a gripping portion at the base end of the shaft, a struck member at the tip end of the shaft, and a striking member that is provided between the gripping portion and the struck member and is movable in the length direction of the shaft. With the above-mentioned configuration, when taking a practice swing, centrifugal force causes the striking member to move along the shaft and collide with the struck member, making it possible to experience a striking sensation similar to that of actually hitting a ball.

Japanese Patent Application Publication No. 8-24386

However, the above-mentioned conventional devices are limited to "dry swings" and cannot actually hit a golf ball. Therefore, compared to practicing by actually hitting a golf ball (for example, driving practice at a golf driving range), conventional devices lack realism, which raises concerns about reduced interest.

In order to improve at golf, it is important to hit the golf ball with a proper swing form, and it is particularly important that the movement (angle, position, direction) of the club head at impact (the moment the ball is hit) is appropriate. Specifically, there are three important points: that the inclination of the club head at impact is at the correct angle, that the ball is securely caught by the center of the club face (the hitting surface of the club head), and that the club face is facing the target direction. However, because conventional golf practice equipment does not have a club head in the first place, it is difficult to master the above-mentioned important points even if the player understands them, and this may hinder improvement in golf.

The present invention was made to solve the problems exemplified above, and its purpose is to provide a golf practice tool that can help improve golf skills while preventing a decline in interest.

Below, we will explain each of the means suitable for achieving the above objectives. In addition, we will add the specific effects of the corresponding means as necessary.

Means 1. A club head having a ball striking surface;
a socket adapted to be joined to the club head;
A shaft that is joined to the socket;
A golf practice tool comprising a fixed grip and a movable grip provided on the shaft,
the fixed grip is fixed to the shaft and is provided at a position farther away from the socket than the movable grip is,
The movable grip is fitted onto the shaft, and has an inner circumferential surface whose inner diameter is larger than the outer diameter of the shaft and smaller than the outer diameter of the fixed grip and the outer diameter of the socket.

According to Means 1, the inner diameter of the inner circumferential surface of the movable grip is larger than the outer diameter of the shaft. Therefore, the movable grip is provided so as to be slidable and rotatable in the longitudinal direction of the shaft. Also, the inner diameter of the inner circumferential surface of the movable grip is smaller than the outer diameter of the fixed grip and the outer diameter of the socket. Furthermore, the fixed grip fixed to the shaft is provided at a position farther away from the socket than the movable grip. In other words, the movable grip is always located between the socket and the fixed grip in the longitudinal direction of the shaft.

In summary, the movable grip of this means is always located between the socket and the fixed grip in the longitudinal direction of the shaft, and is slidable and rotatable.

The golf practice tool of this means allows for practice in at least two ways: a first method of use for "practice swings" and a second method of use for "hitting a golf ball."

The procedure for the first method of use for "practice swings" is as follows: first, grip the fixed grip with both hands and take an address (a stance for hitting a golf ball). At that time, the movable grip comes into contact with the socket due to gravity. After that, take back (pulling the tool backward) to the so-called top position (the position where both hands are at their highest). At that time, the movable grip that was in contact with the socket moves toward the fixed grip due to gravity from a predetermined timing when the socket is positioned above the fixed grip, and at the top position, it comes into contact with the fixed grip. Then, make a downswing. At that time, the movable grip that was in contact with the fixed grip moves rapidly along the shaft due to the centrifugal force of the swing and collides with the socket. This collision produces a collision sound, and the swinger can experience a similar sensation to when actually hitting a golf ball. The timing of the collision varies depending on various conditions such as the length and weight of both grips and the length and weight of the shaft, but generally coincides with the moment when the club head reaches its lowest point, that is, the moment of impact. However, because this method does not use a golf ball, there is no actual impact. After that, you follow through (swing your arms through) until the finish (the end of the swing and a stationary position).

Next, the procedure of the second method of use for "hitting a golf ball" will be described. However, for convenience, the case where a right-handed person practices will be described (the same applies below). First, in a place where the golf ball can be hit, the golf ball is placed on the ground (or on a tee). Then, with the fixed grip and the movable grip in contact with each other, the fixed grip is held with the left hand and the movable grip is held with the right hand. After that, a series of movements (from address to finish) are performed in the same procedure as in the first method of use. In this method of use, since the movable grip is held with the right hand, the movable grip does not move significantly in the longitudinal direction of the shaft. Therefore, unlike the first method of use, the movable grip does not collide with the socket, producing a collision sound. Instead, with this method of use, the impact of actually hitting a golf ball can be enjoyed.

In this way, this device allows you to "hit the golf ball" in addition to "practice swings." Therefore, compared to conventional devices that are limited to "practice swings," you can practice with a high level of reality, and it is possible to prevent a decline in interest.

In addition, according to this method, since the golf practice tool has a club head, it is relatively easy to master the three important points at the moment of impact: the angle, position, and direction of the club head, by practicing while checking these points. In addition, since the golf practice tool of this method is largely identical to the golf club, it is easy to master the appropriate swing form that synchronizes the body and the golf club. This also has the effect of making it easier to improve your golf game.

By the way, one important point for improving your golf game (for right-handed people) is "external rotation of the left arm." "External rotation of the left arm" refers to the movement of rotating (twisting) your left arm to the left as seen from your perspective. Generally, by correctly "external rotation of the left arm" from the downswing to the finish, the club head accelerates and the golf ball can be hit farther. However, for example, when a beginner makes a swing, there is a concern that in an attempt to hit the golf ball farther, the "grip pressure of the right hand" (how tight the grip is) may become inadvertently strong, which could hinder the correct movement of "external rotation of the left arm."

In this regard, according to the second method of use of the present means, the fixed grip is held with the left hand and the movable grip with the right hand. This allows the movable grip to rotate relative to the fixed grip. This makes it possible to practice hitting golf balls while preventing situations in which excessive "grip pressure of the right hand" impedes the correct movement of "external rotation of the left arm."

When using the grip described above, the left hand will be positioned below the fixed grip. In other words, there will be an open area from where the fixed grip is gripped to above (the upper end of the fixed grip). For this reason, if a separate instructor is present, the instructor can hold this open area and help the student master the proper swing form. This has the effect of making it easier to improve at golf.

Although we will not go into detail here, it is of course possible to practice hitting golf balls using the first method of use (holding the fixed grip with both hands. When swinging, the movable grip hits the socket, producing a collision sound).

Means 2. The golf practice tool described in means 1, characterized in that it is equipped with a rotation confirmation means for confirming how much the movable grip has rotated relative to at least one of the shaft and the fixed grip.

According to the second means, the degree of the aforementioned "external rotation of the left arm" and "grip pressure of the right hand" can be visually confirmed by the rotation confirmation means. Therefore, it becomes possible to recognize and correct the swing habits of the practicer relatively early on. This makes it easier for the practicer to improve his/her golf game.

Means 3. The golf practice tool described in means 1, characterized in that the movable grip has an inner tube and an outer grip part that is more elastic than the inner tube.

Method 3 reduces the discomfort felt when holding the movable grip, and by using a material for the inner tube that is harder (has a smaller coefficient of friction) than the outer grip portion, smooth sliding, etc. can be expected.

Means 4. The golf practice tool described in means 3, characterized in that the length of the fixed grip and the length of the movable grip are equal, and the outer grip part of the movable grip is made of the same material as the fixed grip.

According to the fourth method, when the fixed grip is held in the left hand and the movable grip is held in the right hand (for example, the second method of use), it is possible to hold the grip without feeling any discomfort in the palm. In addition, when manufacturing the device, for example, by cutting a commercially available grip in half and using one half as the fixed grip and the other half as the outer grip part of the movable grip, it is possible to improve the yield and thus the productivity.

Means 5. The golf practice tool described in means 1, characterized in that the shaft is provided with a cushioning material between the fixed grip and the movable grip.

According to the fifth aspect, for example, it is possible to prevent malfunctions caused by fingers getting caught between the fixed grip and the movable grip. In addition, by preventing contact between the fixed grip and the movable grip, it is possible to extend the product life of the golf practice equipment.

Means 6. The golf practice tool described in means 5, characterized in that the outer diameter of the cushioning material is set between the outer diameter of the fixed grip and the outer diameter of the movable grip.

According to the sixth aspect, for example, when the fixed grip is held in the left hand and the movable grip is held in the right hand (e.g., the second method of use), it becomes possible to hold the grip without feeling any discomfort in the palm of the hand.

Means 7. A golf practice tool according to any one of means 1 to 6, characterized in that the shaft is provided with a detachable movement restriction means for restricting the movement of the movable grip in the longitudinal direction of the shaft.

According to the seventh aspect, for example, when a player swings while holding the fixed grip with the left hand and the movable grip with the right hand (e.g., the second method of use), it is possible to prevent problems caused by the movable grip becoming separated from the fixed grip, such as making it difficult to swing with the proper form.

1 is a perspective view showing a first state of a golf practice tool; FIG. 4 is a perspective view showing a second state of the golf practice tool; FIG. 1A and 1B are front views showing a golf practice tool in a first state and a second state, respectively. 1 is an explanatory diagram showing a first mode of use of the golf practice tool; FIG. 11 is an explanatory diagram showing a second method of using the golf practice tool. FIG. 13 is an explanatory diagram showing a state of the golf practice tool in the hand in a second method of using the golf practice tool. FIG. FIG. 11 is a perspective view showing a golf practice device according to another embodiment. FIG. 11 is an explanatory diagram showing a state of a golf practice tool in another embodiment. FIG. 11 is a perspective view showing a fixing member used in another embodiment. FIG. 11 is a front view showing a state in which a fixing member used as another embodiment is attached to a shaft.

One embodiment will be described below with reference to the drawings. Note that the dimensions and scales in each drawing are simplified for convenience and do not necessarily match the actual dimensions and scales.

As shown in Figures 1 and 2, the golf practice tool 1 of this embodiment is a so-called iron type, and includes a club head 2 with a ball-hitting surface, a rubber socket 3 connected to the club head 2, a shaft 4 connected to the socket 3, a fixed rubber grip 5 attached to the tip of the shaft 4, a felt cushioning material 6 attached to the shaft 4 adjacent to the fixed grip 5, and a movable grip 7 inserted around the shaft 4.

As shown in FIG. 3, the movable grip 7 includes an outer grip portion 8 made of rubber of the same material as the fixed grip 5, and an inner tube 9 that has lower elasticity than the outer grip portion 8 and is fixed to the inner peripheral surface of the outer grip portion 8. In this embodiment, the inner tube 9 is made of polycarbonate, and the inner diameter of the inner peripheral surface is set to be larger than the outer diameter of the shaft 4. Therefore, a gap is formed between the inner peripheral surface of the inner tube 9 and the outer peripheral surface of the shaft 4, and the movable grip 7 is provided so as to be slidable and rotatable in the longitudinal direction of the shaft 4. In addition, the inner diameter of the inner peripheral surface of the inner tube 9 is smaller than the outer diameter of the buffer material 6 and the outer diameter of the socket 3. In other words, the movable grip 7 is always located between the socket 3 and the buffer material 6 in the longitudinal direction of the shaft 4. In summary, the movable grip 7 is always located between the socket 3 and the buffer material 6 in the longitudinal direction of the shaft 4, and is provided so as to be slidable and rotatable. In this embodiment, the state in which the movable grip 7 is in contact with the socket 3 as shown in FIG. 1 is referred to as the first state, and the state in which the movable grip 7 is in contact with the cushioning material 6 as shown in FIG. 2 is referred to as the second state.

As shown in FIG. 4, the fixed grip 5 and the cushioning material 6 are provided with a first mark 10, and the movable grip 7 is provided with a second mark 11. Each mark 10, 11 is used as a rotation confirmation means for confirming how much the movable grip 7 has rotated relative to at least one of the shaft 4 and the fixed grip 5. As shown in FIG. 4(b), each mark 10, 11 is provided so as to draw a straight line with respect to the fixed grip 5, the cushioning material 6, and the center of the movable grip 7 when the golf practice tool 1 is viewed from the front in the second state (the state in which the movable grip 7 is in contact with the cushioning material 6). The length of each mark 10, 11 is about 4 cm. Each mark 10, 11 is formed by printing, marking with a pen or the like, engraving, embedding a different material, or the like.

There are no particular limitations on the dimensions or weight of the golf practice tool 1, but as an example of dimensions, the total length in the longitudinal direction (from the center point of the club head 2 to the tip of the fixed grip 5) is approximately 95 cm, the length of the socket 3 is approximately 1 cm, the length of the fixed grip 5 is approximately 20 cm, the length of the cushioning material 6 is approximately 1 cm, and the length of the movable grip 7 is approximately 15 cm.

As an example of the weight, the total weight is approximately 483g, the club head 2 is approximately 293g, the combined weight of the socket 3 and the cushioning material 6 is approximately 5g, the shaft 4 is approximately 112g, and the combined weight of the fixed grip 5 and the movable grip 7 is approximately 73g.

Now, the golf practice tool 1 of this embodiment allows for practice in at least two ways: a first method of use for "practice swings" and a second method of use for "hitting a golf ball."

The procedure of the first method of use for "practice swing" will be described with reference to FIG. 5. First, as shown in FIG. 5(a), the fixed grip 5 is gripped with both hands and the player takes an address (a stance for hitting a golf ball). At that time, the movable grip 7 is in contact with the socket 3 due to gravity (first state). Then, as shown in FIG. 5(b), the player takes a take-back (an action of pulling the tool backward). At that time, the movable grip 7, which was in contact with the socket 3, gradually moves toward the buffer material 6 due to gravity from a predetermined timing when the socket 3 is positioned above the buffer material 6. Next, as shown in FIG. 5(c), the player takes a so-called top position (a position in which both hands are at their highest). In the top position, the movable grip 7 is in contact with the buffer material 6 (second state). Then, as shown in FIG. 5(d), the player makes a down swing. At that time, the movable grip 7, which was in contact with the buffer material 6, moves rapidly along the shaft 4 due to the centrifugal force of the swing. Then, as shown in FIG. 5(e), the movable grip 7 hits the socket 3 (first state) when the club head 2 reaches its lowest point, i.e., at a timing that almost coincides with the moment of impact. However, since this method of use does not use a golf ball, of course, no actual impact occurs. The impact produces a collision sound, and the swinger experiences a sensation similar to that of actually hitting a golf ball. After that, as shown in FIG. 5(f), the follow-through (arm swing) is performed until the finish (the swing sequence ends and the swinger is in a stationary position).

Next, the procedure of the second method of use for "hitting a golf ball" will be described with reference to Figures 6 and 7. First, as shown in Figure 6(a), a golf ball is placed on the ground (or on a tee) at a place where the golf ball can be hit. Then, with the movable grip 7 and the cushioning material 6 in contact (second state), the fixed grip 5 is held with the left hand and the movable grip 7 with the right hand. At this time, as shown in Figures 7(a) and 7(b), the first mark 10 and the second mark 11 are aligned, and the fixed grip 5 is held with the left hand and the movable grip 7 with the right hand. After that, as shown in Figures 6(b), 6(c), and 6(d), a series of movements (from address to finish) are performed in the same procedure as in the first method of use. In this method of use, the movable grip 7 is held with the right hand, so it does not move significantly in the longitudinal direction of the shaft 4. Therefore, unlike the first method of use, the movable grip 7 does not collide with the socket 3, causing a collision sound. Instead, this method of use allows you to enjoy the impact of actually hitting a golf ball.

Now, when the first mark 10 and the second mark 11 are gripped in an aligned state as described above and then a swing is performed with an appropriate form, the left hand (left arm) is rotated (twisted) to the left as seen from the player's perspective, as shown in FIG. 7(c). Generally, this movement is called "external rotation of the left arm" (for right-handed people). With this movement, the fixed grip 5, the cushioning material 6, and the shaft 4 held by the left hand are also rotated (twisted) to the left as seen from the player's perspective. On the other hand, when the "right hand grip pressure" (the gripping strength) applied to the movable grip 7 is appropriate (moderate strength), the movable grip 7 is not rotated as much as the fixed grip 5, and after the swing, the positions of the first mark 10 and the second mark 11 are shifted (the first mark 10 is rotated more) as shown in FIG. 7(d). Furthermore, if the "right hand grip pressure" is excessively large, the movable grip 7 is rotated more than the fixed grip 5, resulting in a state in which the positions of the first mark 10 and the second mark 11 are misaligned (the second mark 11 is rotated more). In addition, if the "right hand grip pressure" is excessively small, the movable grip 7 is rotated less than the fixed grip 5, resulting in a state in which the positions of the first mark 10 and the second mark 11 are misaligned (the first mark 10 is rotated more).

As described above in detail, in this embodiment, in addition to "practice swings," you can also "hit a golf ball." Therefore, compared to conventional devices that are limited to "practice swings," you can practice with a high level of reality, and it is possible to prevent a decline in interest.

In addition, according to this embodiment, since the golf practice tool 1 has the club head 2, it is relatively easy to master the three important points at the moment of impact, namely the angle, position, and direction of the club head 2, by practicing while checking these points. In addition, since the golf practice tool 1 of this embodiment is largely identical to the golf club, it is easy to master the appropriate swing form that synchronizes the body and the golf club. This also has the effect of making it easier to improve your golf game.

Incidentally, one important point in improving your golf game is the aforementioned "external rotation of the left arm." Generally, by correctly performing "external rotation of the left arm" from the downswing to the finish, the club head accelerates and the golf ball can be hit farther. However, for example, when a beginner makes a swing, there is a concern that in an attempt to hit the golf ball farther, the "grip pressure of the right hand" may inadvertently become too strong, which could hinder the correct movement of "external rotation of the left arm."

In this respect, according to the second method of use of this embodiment, the fixed grip 5 is held with the left hand and the movable grip 7 with the right hand. Therefore, during the swing, the left arm can be externally rotated without being affected by the grip pressure of the right hand. In addition, when the swing is performed properly, the movable grip 7 rotates relative to the fixed grip 5 as described above. Therefore, it is possible to practice hitting a golf ball while preventing a situation in which the correct movement of the left arm's external rotation is hindered by excessive grip pressure of the right hand. In addition, in this embodiment, the first mark 10 and the second mark 11 are attached to both grips 5 and 7, and the degree of the left arm's external rotation and the right hand's grip pressure can be visually confirmed. Therefore, it is possible to recognize and correct the swing habits of the practicer relatively early.

When holding the golf club in the above-mentioned way, the left hand will be positioned under the fixed grip 5. In other words, there will be an empty area from the grip of the fixed grip 5 to the upper part (the upper end of the fixed grip 5). Therefore, if a separate instructor is present, the instructor can hold the empty area and help the player master the proper swing form. In this respect, it has the effect of making it easier to improve at golf.

Furthermore, a cushioning material 6 is provided between the fixed grip 5 and the movable grip 7. This makes it possible to prevent problems caused by, for example, fingers getting pinched between the fixed grip 5 and the movable grip 7. In addition, by preventing contact between the fixed grip 5 and the movable grip 7, it is possible to extend the product life of the golf practice tool 1.

The movable grip 7 also has an outer grip section 8 made of the same material as the fixed grip 5. This reduces discomfort when holding the movable grip 7, and the inner tube 9 is made of polycarbonate, which is harder and has a smaller coefficient of friction than the outer grip section 8, allowing for smoother sliding.

When taking back in the first method of use, it is desirable to gradually move the movable grip 7 that was in contact with the socket 3 by using gravity so that it is in contact with the cushioning material 6 when the player is in the top position. By being aware of this, the player can take back relatively slowly and take the time to do so, and can also prevent an overswing (swinging back more than necessary) and stabilize the top position.

The present invention is not limited to the above embodiment, and may be implemented, for example, as follows. Of course, other applications and modifications not exemplified below are also possible.

(a) In the above embodiment, two methods of use are described: a first method of "practice swings" and a second method of "hitting a golf ball." However, it is of course possible to practice actually hitting a golf ball using the first method of gripping the club (holding the fixed grip 5 with both hands. When swinging, the movable grip 7 hits the socket 3, producing a collision sound).

(b) In the above embodiment, an iron-shaped club head 2 is used, but as long as it has a ball-striking surface, the shape and material of the club head 2 are not particularly limited. For example, as shown in FIG. 8, a wood-type (e.g., driver) club head 21 may be used. It may also be a utility type or a wedge type. Furthermore, the material of the shaft 4 is not particularly limited, and it may be made of steel or carbon.

(c) In the above embodiment, the linear first mark 10 and second mark 11 are used as the rotation confirmation means, but the shape and method of applying the marks are not particularly limited.

For example, the marks may be composed of letters, symbols, figures, etc. Also, as shown in FIG. 9, the surfaces of both grips 5, 7 may each be colored in two colors to allow confirmation of the degree of rotation. In this case, the boundary between the colors constitutes the rotation confirmation means. In FIG. 9, FIG. 9(a) shows the state of both grips 5, 7 at the start of a swing in the second method of use (a state in which the boundary between the colors is aligned), and FIG. 9(b) shows the state of both grips 5, 7 at the end of a swing in the second method of use (a state in which the boundary between the colors is misaligned). Note that the rotation confirmation means only needs to be able to visually confirm the degree of rotation of the movable grip 7, and the location and size of the installation are not limited to the above examples.

(d) Although not specifically mentioned in the above embodiment, for example, as shown in Figs. 10 and 11, in the second state (a state in which the movable grip 7 is in contact with the cushioning material 6), the movement of the movable grip 7 in the longitudinal direction relative to the shaft 4 may be restricted, and the fixed member 31 may be provided detachably. By providing the fixed member 31, when swinging while holding the fixed grip 5 with the left hand and the movable grip 7 with the right hand (for example, the second usage method), it is possible to prevent problems caused by the movable grip 7 becoming separated from the fixed grip 5, such as a situation in which it becomes difficult to swing with an appropriate form.

(e) In the above embodiment, polycarbonate is used as the inner tube 9 of the movable grip 7, but the material is not particularly limited. However, it is preferable that the inner tube 9 has a lower elasticity and a lower coefficient of friction than the outer grip portion 8. In addition, the movable grip 7 does not have to have a two-layer structure, and may have a one-layer structure or a three-layer structure.

(f) In the above embodiment, a rubber socket 3 is used, but the material is not particularly limited and may be made of resin, for example. However, it is preferable that the socket 3 has enough durability to withstand impacts from the movable grip 7.

(g) In the above embodiment, a felt cushioning material 6 is used, but the material is not particularly limited. However, it is preferable to use a material that is as gentle on the hands as possible, such as sponge or cotton fabric.

(h) For example, the length of the fixed grip 5 and the length of the movable grip 7 may be the same, and the fixed grip 5 and the outer grip portion 8 of the movable grip 7 may be made of the same material. With this configuration, when the fixed grip 5 is held in the left hand and the movable grip 7 is held in the right hand (for example, the second usage method), it is possible to hold them without feeling any discomfort in the palm. In addition, when manufacturing the golf practice tool 1, for example, by cutting a commercially available grip in half and using one half as the fixed grip 5 and the other half as the outer grip portion 8 of the movable grip 7, the yield rate can be improved, and thus the productivity can be improved.

(i) The outer diameter of the cushioning material 6 needs to be larger than the inner diameter of the inner tube 9, but in addition to this, for example, the outer diameter of the cushioning material 6 may be set between the outer diameter of the fixed grip 5 and the outer diameter of the movable grip 7. With this setting, for example, when holding the fixed grip 5 with the left hand and the movable grip 7 with the right hand (for example, the second usage method), it becomes possible to hold them without feeling any discomfort in the palm.

(j) For example, a magnet may be provided that can attach the movable grip 7 to the fixed grip 5 or the cushioning material 6. However, it is preferable to weaken the magnetic force of the magnet so that the centrifugal force generated by the downswing causes the movable grip 7 to move away from the fixed grip 5 or the cushioning material 6.

1...Golf practice equipment, 2...club head, 3...socket, 4...shaft, 5...fixed grip, 6...cushioning material, 7...movable grip, 8...outer grip portion, 9...inner tube, 10...first mark constituting rotation confirmation means, 11...second mark constituting rotation confirmation means, 31...fixed member as movement restriction means.

Claims (7)

a club head having a ball striking surface;
a socket adapted to be joined to the club head;
A shaft that is joined to the socket;
A golf practice tool comprising a fixed grip and a movable grip provided on the shaft,
the fixed grip is fixed to the shaft and is provided at a position farther away from the socket than the movable grip is,
The movable grip is fitted onto the shaft, and has an inner circumferential surface whose inner diameter is larger than the outer diameter of the shaft and smaller than the outer diameter of the fixed grip and the outer diameter of the socket. The golf practice tool according to claim 1, characterized in that it is provided with a rotation confirmation means for confirming how much the movable grip has rotated relative to at least one of the shaft and the fixed grip. The golf practice tool according to claim 1, characterized in that the movable grip comprises an inner tube and an outer grip part that is more elastic than the inner tube. The golf practice tool according to claim 3, characterized in that the length of the fixed grip and the length of the movable grip are equal, and the outer grip portion of the movable grip is made of the same material as the fixed grip. The golf practice tool according to claim 1, characterized in that the shaft is provided with a cushioning material between the fixed grip and the movable grip. The golf practice tool according to claim 5, characterized in that the outer diameter of the cushioning material is set between the outer diameter of the fixed grip and the outer diameter of the movable grip. A golf practice tool according to any one of claims 1 to 6, characterized in that the shaft is provided with a detachable movement restriction means for restricting the movement of the movable grip in the longitudinal direction of the shaft.

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