JP3187479U - Golf swing exerciser - Google Patents

Abstract

An object of the present invention is to provide a golf swing practice tool that is extendable and portable and that is highly safe.
The shaft is divided into a first shaft (10) to which a grip (2) is attached and a second shaft (20) to which a weight (30) is coupled, so that the second shaft (20) can slide inside the first shaft (10). The first shaft 10 is provided with a reduced diameter portion 12 near the weight 30, the second shaft 20 is provided with an enlarged diameter portion 23 at one end located in the first shaft 10, and the enlarged diameter portion 23 of the second shaft 20 is provided. The first shaft 10 can be expanded and contracted in an extended state in which the first shaft 10 is engaged with the reduced diameter portion 12 and a shortened state in which the second shaft 20 is pushed into the first shaft 10. Used for swing exercises in the extended state and carried in a shortened storage state. In the retracted state, the weight 30 is not separated, and the weight 30 is detachably coupled to the second shaft 20, so that a weight detachment accident during swing exercise does not occur.
[Selection] Figure 2

Description

  The present invention relates to a golf swing practice tool.

  2. Description of the Related Art Conventionally, swing exercise tools for performing club swing exercises aiming to improve golf have been provided. Such a swing training tool is slightly shorter than a normal club so that it can be used even in a narrow space. For example, in the one disclosed in Utility Model Registration No. 3056709, a club head is imitated at one end of a shaft portion. The weight of the synthetic rubber is provided, and the other end is provided with a grip. Although the total length is short, the length is 60 cm or more, enabling practice while obtaining the same feel as the head speed when swinging.

Utility Model Registration No. 3056709 Utility Model Registration No. 3156470

  By the way, since an enthusiastic golf player practices between business hours such as business trips, a desire to carry a swing training device is heard even when moving. However, although it is shorter than a normal club, it is not the size that fits in a bag or business case, and it can not be divided, so there is the disadvantage that baggage increases, and furthermore, that you are trying to practice secretly and swing exercise tools If you do not want to know that you are using, there is a fact that you are troubled with its transportation.

Therefore, there is one disclosed in Utility Model Registration No. 3156470 as a separable swing practice tool. This consists of a grip, a shaft, and a container body attached to the tip of the shaft via a mounting member. The container body is filled with liquid, steel balls, sand, etc., and a weight equivalent to a club head. To do. The mounting member is prevented from coming off by a fixing ring fixed to the shaft and has a female screw, and is coupled to the male screw at the opening of the container main body to connect the shaft and the container main body.
According to this, by removing the container main body, the grip, the shaft, and the container main body are separated from each other and shortened, so that the container can be transported in a compact manner.

  However, the utility model registration No. 3156470 has a problem in handling because the shaft (and the grip) and the container body are separated, so care must be taken not to disperse during transportation and the connection work is troublesome. There is. As a particularly serious problem, the user must perform the connecting operation between the shaft and the container body, so that the reliability of the connection is not guaranteed and the screw connection between the mounting member and the container body is incomplete. If used in a heavy weight, the heavy weight (container body) may fly away in an unexpected direction, causing damage to the surrounding area or personal injury.

  Therefore, in view of the above-mentioned conventional problems, the present invention has an object to provide a golf swing practice tool that is easy to handle, can be shortened with high safety, and has improved portability.

  Therefore, according to the present invention, in a golf swing training device having a grip at one end of a shaft and a weight at the other end, the shaft is divided into at least a first shaft having a grip attached and a second shaft having a weight combined. In addition, an expansion / contraction mechanism is provided between the first shaft and the second shaft so that the length can be changed between an extended state and a shortened state.

The swing training device of the present invention can be in a use state of a full length suitable for swing and a storage state suitable for carrying. And, since the integrity is maintained even in a shortened storage state, it is not separated and easy to handle when carrying.
Further, since the weight is non-removably coupled to the second shaft, there is no possibility of occurrence of an accident in which the weight is detached during swing practice.

It is a figure which shows embodiment of this invention. It is the elements on larger scale which show the detail of embodiment.

Hereinafter, embodiments of the present invention will be described.
1A and 1B are diagrams showing a swing training tool according to an embodiment. FIG. 1A is an overall external view of an extended state used for swing practice, FIG. 1B is a cross-sectional view of the extended state, and FIG. It is sectional drawing of a state.
2A and 2B show details, and FIG. 2A is an enlarged sectional view of a portion A in FIG. 1B, and FIG. 2B is an enlarged sectional view of a portion B in FIG.
The swing training tool 1 includes a grip 2, a shaft 5 including a first shaft 10 and a second shaft 20, and a weight 30 as main components. The weight 30 corresponds to a club head.
In the following description, the weight 30 side is the front and the grip 2 side is the rear.

The grip 2 is made of synthetic rubber or resin and includes a cylindrical portion 3 and a bottom wall 4 that closes the rear end thereof. As in the case of a normal club, the outer shape of the cylindrical portion 3 is smaller in diameter toward the front and larger in diameter toward the rear.
In particular, as shown in FIG. 1B, the inner diameter of the cylindrical portion 3 is matched with the outer diameter of the first shaft 10 and is inserted until the rear end of the first shaft 10 abuts against the bottom wall 4 for bonding. Thus, the grip 2 and the first shaft 10 are integrally coupled. The front end of the grip 2 (tube portion 3) extends to the vicinity of the front end of the first shaft 10.
The first shaft 10 and the second shaft 20 forming the shaft 5 are each made of a metal (for example, stainless steel) pipe, and the outer diameter of the second shaft 20 is smaller than the inner diameter of the first shaft 10. The first shaft 10 is slidably accommodated in the shaft 10 and extends forward from the front end of the first shaft 10.

As shown in FIG. 2B, the weight 30 is made of a metal cylinder, and has a conical surface 31 with a gradually inclined slope that becomes smaller in diameter toward the rear end in the vicinity of the rear end. Further, as shown in FIG. 1A, the front end corner of the weight 30 is a curved chamfer 32, and the rear end corner is a conical chamfer 33.
The weight 30 is coupled to the front end of the second shaft 20. Specifically, a hole 35 extending in the axial direction in alignment with the outer diameter of the second shaft 20 is opened on the rear end surface of the weight 30, and the front end of the second shaft 20 is inserted into the hole 35. The weight 30 is formed with a screw through hole 36 and a screw hole 38 on a diameter line crossing the hole 35, and the screw through hole 36 and the screw hole 38 are opposed to each other with the hole 35 interposed therebetween. The side opening of the screw through hole 36 is a large diameter portion 37 having a seat surface on which the head 8 of the screw 7 is seated.

  An attachment hole 21 corresponding to the screw through hole 36 is also formed in the second shaft 20, and the screw 7 inserted from the screw through hole 36 passes through the attachment hole 21 of the second shaft 20 inserted into the hole 35. It is screwed into the screw hole 38. The large diameter portion 37 of the screw through hole 36 is filled with the cured resin 40, and the screw hole 38 is also filled with the cured resin 40 from the outside, whereby the weight 30 and the second shaft 20 are coupled, and the screw 7 is The weight 30 is not loosened and the user cannot intentionally remove the weight 30 from the second shaft 20. That is, in the present application, the connection between the weight 30 and the second shaft 20 means a configuration in which the user can arbitrarily attach and detach it.

As shown in FIG. 2 (a), the rear end of the second shaft is flared to a diameter that matches the inner diameter of the first shaft within a range in which smooth sliding with the first shaft is ensured. 23. Near the front end of the first shaft 10, there is provided a reduced diameter portion 12 that is pressed in the inner diameter direction from the outer peripheral side within a range in which smooth sliding with the second shaft 20 is ensured. The reduced diameter portion 12 is positioned within the cover range of the grip 2 so that it does not appear in appearance and does not affect the aesthetic appearance.
A resin sleeve 15 is disposed on the inner side in front of the reduced diameter portion 12 of the first shaft 10 and fills the gap with the outer peripheral surface of the second shaft 20 so that the first shaft 10 and the second shaft 10 are not relatively tilted. The shaft 20 can slide linearly and smoothly.
Thus, the shaft 5 can be expanded and contracted.

In the second shaft 20, the enlarged diameter portion 23 at the rear end is locked to the reduced diameter portion 12, and the forward sliding from the first shaft 10 is restricted, so that the entire length of the swing training tool is defined. FIGS. 1A and 1B show this state.
Since the backlash between the first shaft 10 and the second shaft 20 is absorbed by the sleeve 15, even if the distance S from the front end of the first shaft 10 to the reduced diameter portion 12 is considerably shortened, the first shaft 10 and the second shaft The linearity of 20 is maintained, and the total length when extended can be increased.

Further, the rear end face of the weight 30 abuts against the front end of the first shaft 10 in the direction in which the second shaft 20 is pushed into the first shaft 10, and the total length when the swing training tool is stored (shortened) is defined. FIG. 1C shows this storage state.
The distance L2 from the rear end (the enlarged diameter portion 23) of the second shaft 20 to the rear end surface of the weight 30 is set to an equivalent level although it is less than or equal to the total length L1 of the first shaft 10, and the rear end surface of the weight 30 is the first. When coming into contact with the front end of the shaft 10, the rear end of the second shaft 20 does not protrude rearward from the rear end of the first shaft 10.

  If the total length of the swing practice tool 1 when stored (shortened) is within 40 cm, it can be easily stored in a normal bag or business case. For example, if the length of the weight 30 is set to 8.7 cm and the total length of the first shaft 10 is set to 30 cm, the total length at the time of storage is about 39 cm, which is remarkably shortened compared with the total length of 60 cm or more that is often seen in the past. In this case, if the length from the rear end surface of the weight 30 to the rear end of the second shaft 20 is set to 28.5 cm and the distance from the front end of the first shaft 10 to the reduced diameter portion 12 is set to 5 cm, The overall length of the swing practice tool 1 is approximately 63 cm.

To extend the swing exercise tool 1 in the retracted state, the grip 2 can be held with one hand, the weight 30 can be held with the other hand, and it can be simply pulled out until the slide stops. Even when swinging in the extended state such as swinging, the enlarged diameter portion 23 of the second shaft 20 is locked to the reduced diameter portion 12 and does not come out of the first shaft 10, and the distance from the grip 2 to the weight 30 is fixed. And stable swing practice.
Here, by setting the diameter of the weight 30 to a predetermined value of about 30 mm, for example, an inertia moment equivalent to that of the wood No. 1 driver can be obtained.

  When storing for carrying, the weight 30 may be grasped and the second shaft 20 may be pushed into the first shaft 10 in the direction opposite to that during extension. Since the enlarged diameter portion 23 is only separated from the reduced diameter portion 12 of the first shaft 10, it can be easily shortened without any particular resistance. And even if shortened, unity is maintained as one unit, and it is not separated separately.

  In the present embodiment, the first shaft 10 and the second shaft 20 themselves form an expansion / contraction mechanism in the device. In particular, the first shaft 10 having the reduced diameter portion 12 corresponds to the first shaft side member, and the enlarged diameter portion 23. The 2nd shaft 20 which has this corresponds to the 2nd shaft side member.

The embodiment is configured as described above. In the golf swing training device 1 having the grip 2 at one end of the shaft 5 and the weight 30 at the other end, the shaft 5 is attached to the first shaft 10 to which the grip 2 is attached. The weight 30 is divided into the second shaft 20 to which the weight 30 is coupled, and the length of the shaft 5 can be expanded and contracted, so that it can be used in a full length suitable for swing and suitable for carrying. Can be stored.
Since the integrity is maintained even in a shortened storage state, it is not separated and easy to handle when carrying.
Since the weight 30 is coupled to the second shaft 20, the user cannot attach and detach it at any time, so there is no risk of a weight disengagement accident during swing practice due to improper attachment by the user. .

  In particular, the expansion and contraction of the shaft 5 enables the second shaft 20 to slide inside the first shaft 10, the first shaft 10 is provided with a reduced diameter portion 12 near the weight 30, and the second shaft 20 has the first shaft 10. An enlarged diameter portion 23 is provided at one end located inside, and the enlarged diameter portion 23 of the second shaft 20 is engaged with the reduced diameter portion 12 of the first shaft 10 to be in an extended state, and the second shaft 20 is set to the first shaft. Since the second shaft 20 is extended from the first shaft 10 to be in a use state, the second shaft 20 is only retracted into the first shaft 10 to be in a retracted state. Easy.

  Since the telescopic mechanism that changes between the extended use state and the shortened retracted state is formed only by the first shaft 10 and the second shaft 20, the structure is simple, the number of parts is minimal, the manufacture is easy, and the low Realized at cost.

When the distance L2 from the rear end of the second shaft 20 to the rear end surface of the weight 30 is set to be equal to or less than the total length L1 of the first shaft 10, the rear end surface of the weight 30 is brought into contact with the front end of the first shaft 10. 5 is set to be the shortest, it is easy to recognize that the rear end surface of the weight 30 has been shortened to the shortest limit due to the touch of the front end of the first shaft 10, and handling is easy. .
In particular, by setting the overall length of the swing practice tool 1 to 40 cm or less when the length of the shaft 5 is shortened to the shortest limit, it can be stored in a normal bag or business case, so it can be easily carried anywhere at any time. At the same time, since it is not exposed to other people's eyes, it has high utility value even for those who want to practice golf secretly.

In addition, the numerical value in embodiment is an illustration to the last, and this invention is not limited to a description example.
Although the moment of inertia equivalent to that of the driver (No. 1) is mentioned, it is of course possible to obtain the moment of inertia corresponding to the club of any other number by selecting and setting the weight of the weight. In order to set the weight of the weight to a predetermined value, not only means for changing the diameter of the weight, but also the length in the axial direction may be changed.

In the embodiment, the weight 30 imitating the club head is made of metal and the connection to the second shaft 20 is made by filling the screw 7 and the cured resin 40. However, the user can arbitrarily attach and remove the weight 30. If it exists, other coupling forms may be used.
Further, the weight 30 may be made of metal, synthetic rubber or resin, and a bonding structure suitable for each may be adopted.
Although the 1st shaft 10 and the 2nd shaft 20 have high aesthetics by making it a stainless steel material, even if it uses the laminated pipe which uses only a surface layer as a stainless steel material, high aesthetics can be produced similarly.
Although the enlarged diameter portion 23 is formed by flaring, it can be formed by joining another member to the outer periphery of the rear end of the second shaft 20 by welding or the like. And it may be in the form of a protrusion in a part in the circumferential direction as long as it can be engaged with the reduced diameter portion 12 without necessarily extending over the entire circumference.
On the contrary, if the diameter-reduced part 12 can also be latched with the diameter-expanded part 23, it may form the shape of the protrusion to the inner diameter side in a part of the circumferential direction.

  In the embodiment, the expansion / contraction mechanism of the shaft 5 is formed only by the first shaft 10 and the second shaft 20, but is not limited to this, and for example, one or two or more between the first shaft 10 and the second shaft 20. If the intermediate shaft is provided and expanded and contracted in multiple stages, each of the first shaft, the second shaft, and the intermediate shaft can be further shortened, so that the overall length of the swing exercise tool in the retracted (shortened) state is further shortened. In this case, each of the intermediate shafts has a diameter-expanded portion at the rear end (first shaft side) and a diameter-reduced portion at the front portion (second shaft side). It is possible to obtain a stretched state by engaging with the reduced diameter portion of the shaft and shorten the length by pushing the front shaft sequentially into the rear shaft.

  Furthermore, in the expansion / contraction mechanism of the shaft 5, the expanded diameter portion is locked to the adjacent reduced diameter portion on the first shaft side to obtain an expanded state. A configuration in which a claw urged in the radial direction from one shaft is engaged with a hole or a recess formed in the other shaft to obtain an extended state and various other expansion / contraction mechanisms can be employed.

DESCRIPTION OF SYMBOLS 1 Swing practice tool 2 Grip 3 Cylinder part 4 Bottom wall 5 Shaft 7 Screw 8 Head 10 1st shaft 12 Reduced diameter part 20 2nd shaft 21 Mounting hole 23 Expanded part 30 Weight 31 Conical surface 32, 33 Chamfer 35 Hole 36 Screw Through hole 37 Large diameter part 38 Screw hole 40 Cured resin

Claims (5)

A golf swing practice device with a grip on one end of the shaft and a weight on the other end,
The shaft is divided into at least a first shaft to which the grip is attached and a second shaft to which the weight is coupled, and an expansion / contraction mechanism is provided between the first shaft and the second shaft, and an extended state and a shortened state. A golf swing practice tool characterized in that the length can be changed. The telescopic mechanism is
The second shaft side member is slidable inside the pipe-shaped first shaft side member,
The first shaft side member has a reduced diameter portion on the second shaft side member side, the second shaft side member has an enlarged diameter portion at one end located in the first shaft side member,
The expanded diameter portion of the second shaft side member is engaged with the reduced diameter portion of the first shaft side member to be in the extended state, and the second shaft side member is pushed into the first shaft side member to shorten the length. The golf swing practice tool according to claim 1, wherein the golf swing practice tool is in a state. The first shaft-side member is the first shaft itself, and the second shaft-side member is the second shaft itself, and the telescopic mechanism is formed by only the first shaft and the second shaft. Item 3. A golf swing practice tool according to item 2. A distance from a rear end of the second shaft to a rear end surface of the weight is set to be equal to or less than a total length of the first shaft;
4. The golf swing practice device according to claim 3, wherein the shaft becomes the shortest when a rear end surface of the weight is brought into contact with a front end of the first shaft. 5. The golf swing practice tool according to claim 1, wherein a total length including the grip and weight when the length of the shaft is shortened to the shortest limit is set to 40 cm or less.

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