JPH0423576Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a string for practice equipment that allows you to practice form, stroke, etc. by hitting holes attached to a string with both ends supported. The present invention relates to a body, and particularly to an improved technique for a string attachment device that is attached to at least one end of a string and can easily adjust the length of the string.

(Prior Art) Recently, the number of people playing sports is increasing, which is called a sports boom, and along with this, sports facilities are being constructed in various places. However, the expansion of sports facilities has not kept pace with the rapid increase in the number of people playing sports, and as a result, tennis and golf schools, where students learn strokes by hitting a ball, are overflowing with trainees, and they are not able to practice strokes sufficiently. The current situation is that it is not possible to do so.

So even if you don't actually use the sports facilities,
Various training tools have been proposed that allow users to learn correct form, strokes, and the like.

This kind of exercise equipment has three mounting parts 502, 503, 504 attached to the upper and lower sides of a support frame 501 having a triangular front shape, as shown in FIG. ring body 50
5 is stretched, and both ends of a string 508 inserted through the ball 507 are attached to the remaining upper attachment part 502 and the ring body 505 via attachment fittings 508a and 508b. Ta.

(Problem to be Solved by the Invention) However, in such a training tool, strings with balls inserted through them are stretched between the upper and lower mounting parts of the support frame, and both ends of the strings are attached via mounting brackets. Therefore, if you repeat ball hitting practice many times, the string will stretch due to the tension or sudden impact force applied to the string when hitting the ball. As a result, the ball tends to hang from the upper mounting part of the support frame, which causes problems such as the direction of the ball being inconsistent when hitting the ball, making it difficult to learn the correct form, stroke, etc. Ta.

Therefore, the object of the present invention is that the length of the string can be easily adjusted, so that the form and
To provide an attachment device for a string for a training tool, which allows sufficient practice of strokes, etc.

(Means for Solving the Problems) This invention provides an attachment device 3 that is attached to at least one end of the string 1, and the device 3 includes a base 20 and protrusions from the upper and lower surfaces of the base 20. A support member 18 around which one end of the string 1 consisting of a shaft portion 21 is wound, and a long groove 5a corresponding to the shaft portion 21 facing the center of the upper and lower surfaces of the inner side in which the support member 18 is housed and along the longitudinal direction. The case consists of an upper lid 5 and a lower lid 6, each having a hole 22 on the side surface into which one end of the string 1 fits, and one end of the string 1 is extended from the hole 22 so that the string can be inserted into the case. In addition to adjusting the extension of the body 1, the support member 18 is eccentrically rotated while moving through the long grooves 5a, 6a of the upper and lower lids 5, 6 via the shaft portion 21.

(Example) An example of the present invention will be described below based on the drawings.

FIG. 1 is an overall configuration diagram of a cord including an attachment device for a training tool cord according to the present invention, and FIGS. 2 to 4 are internal configuration diagrams of the attachment device according to the present invention.

Reference numeral 1 denotes a string for a practice tool inserted through a ball (not shown), and this string 1 has a rubber core 2 and a rubber core 2 as shown in FIG.
An attachment device 3 that supports and fixes one end of the string 1, which is formed from a fiber woven string 2a that covers the string 1, and a string 1
A support portion 4 for supporting and fixing the other end is provided.

As shown in FIGS. 1 and 2, the mounting device 3 has a generally plate-shaped case in cross-section, and this case consists of an upper lid 5 and a lower lid 6. The cord 1 is fixed from the top with a screw 7.
One end is supported and fixed. The upper and lower lids 5 and 6
are facing each other in the center of their inner upper and lower surfaces,
In addition, long grooves 5a and 6 along the longitudinal direction of the upper and lower lids 5 and 6
a, their left end in the figure forms an R part 8, a long hole 9 is provided near this R part 8, and their right end in the figure forms an R part 10 having the same diameter as the R part 8. and
Moreover, a cylindrical elastic body 11 is provided at the tip of this R portion 10.

As shown in FIGS. 1 and 2, the support part 4 is made up of an elastic member 12 having a substantially conical cylindrical body and a metal ring 13. The other end of the string 1 is firmly attached to the ring 13.
A part of the ring 13 and the other end of the string 2 are held so as to be covered by the elastic member 12, and the other end of the string 1 is supported and fixed.

Next, the internal structure of the mounting device 3 described above will be explained with reference to FIGS. 2 to 4.

Inside the mounting device 3, as shown in FIGS. 2 and 3, left and right inner walls 14, 14, and 1
5 and 15, a pair of left and right boss parts 16, two each
a, 16b, 16c, 16d and 17 not shown
a, 17b, 17c, and 17d are provided protrudingly, a support member 18 is provided at the center of the upper and lower lids 5, 6, and a hole 22 (described later) is bored in the side surface of the R portion 10 of the upper and lower lids 5, 6. There is.

As shown in FIG.
6d are in opposing positions, and the R portion 8 of the upper lid 5
and the straight parts 14a, 14b of the inner walls 14, 14 of the upper lid 5.
The boss portions 16a, 16c are placed approximately in the middle of the R of the upper lid 5.
portion 10 and the straight portion 14a of the inner wall 14, 14 of the upper lid 5,
Boss portions 16b and 16d are provided protruding approximately in the middle of 14b. Further, the boss portion 17 of the lower lid 6 is connected to the upper lid 5.
The inner wall 1 of the lower lid 6 is located at the same position and in the same arrangement as the boss portion 16 of the
It protrudes from 5 and 15. This boss part 16, 17
A screw hole 19 into which the screw 7 described above is screwed is bored in the hole.

The support member 18 is a member that is substantially oval in plan view, as shown in FIGS. 2 to 4, and is composed of a base portion 20 and a shaft portion 21. As shown in FIGS. The base 20 has R portions 20a, 20a at both ends thereof, and a fitting groove 2 having an R-shaped outer circumferential surface along the inner direction of the outer circumferential surface.
0b is formed. The shaft portion 21 is connected to the base portion 20
protrudes from the upper and lower surfaces of the

Here, the previously described hole 22 will be explained with reference to FIG. The hole 22 is formed in the R portion 1 between the boss portions 16d, 17d protruding from the inner walls 14, 15 of the upper and lower lids 5, 6 and the elastic body 11 provided at the tip of the R portion 10 of the upper and lower lids 5, 6.
0 side is perforated. Further, the diameter of the hole 22 is made slightly smaller than the diameter of the string 1, as shown in FIG.

On the other hand, one end of the string 1 attached to the device 3 described above is inserted into the device 3 through the elastic body 11 of the device 3, wrapped around the outer circumference of the base 20 of the support member 18, and wrapped around the base 20 of the support member 18. The string 1 is connected by the fitting groove 18b.
A portion of the string 1 is fitted into the hole 22, and one end of the string 1 extends outward from the upper and lower lids 5 and 6 while being held by the hole 22.

Next, the operation of the above embodiment will be explained.

With the string 1 stretched, the attachment device 3 of the string 1 is attached to the upper attachment portion 23 of the support frame (not shown) through the long hole 9 of the attachment device 3, and the support portion 4 of the string 1 is attached to the upper attachment portion 23 of the support frame (not shown). is attached via a ring 13 to a lower attachment portion of a support frame (not shown). When the player practices hitting a ball many times with the string 1 attached, the string 1 is subjected to tension and sudden impact from hitting the ball. For this reason, the string 1 inserted through the ball is stretched, and the ball is suspended from the upper mounting part of the support frame, but one end of the string 1 extends through the hole 22 of the mounting device 3. By letting
The amount of stretch of the string 1 can be adjusted, and therefore the string 1 can be readjusted to the stretched state, making it easy to learn the correct form, stroke, etc. when hitting a ball.

Furthermore, due to the tension and sudden impact caused by the ball striking, one end of the string 1 to which the device 3 is attached tends to extend outside the device 3, but the support member 18 inside the device 3 The long grooves 5a and 6a of the member 18 are moved through the shaft portion 21 of the member 18 (arrow A in FIG. 3).
(see arrow B in FIG. 3), the support member 18 is eccentrically moved to the right side in the figure, and one end of the string 1 is rotated, particularly at the R portion of the base 20 of the support member 18. 20a, 20a, in order to strongly press against the inner walls 14, 14 and 15, 15 of the upper lid 5 and lower lid 6, one end of the string 1 is more firmly supported and fixed, and the string 1 is pushed out of the device 3. The extension of is prevented. The other end of the string 1 is firmly supported and fixed by the support part 4, and is therefore prevented from extending outside the support part 4.

As described above, since the attachment device 3 for the string 1 of the present invention has the support member 18 and the hole 22 inside, it is possible to increase the holding strength of one end of the string 1, and the length of the string 1 can be increased. The height can be easily adjusted, the manufacturing is simple, and the cost can be reduced.

Note that the attachment device 3 for the string 1 in the present invention is as follows:
It can also be applied to commonly used strings for golf practice equipment.

(Effects of the invention) As is clear from the above explanation, according to the invention,
The length of the string can be easily adjusted, and therefore form, stroke, etc. can be practiced sufficiently.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of a cord for a training tool according to the present invention, including an attachment device, and Fig. 2 is a 2-2 diagram of Fig. 1.
2 line sectional view, Figure 3 is a 3-3 line sectional view of Figure 2,
FIG. 4 is a sectional view taken along the line 4--4 in FIG. 3, and FIG. 5 is an overall configuration diagram of a general practice tool. In addition, in the drawing, 1 is a string for the training tool, 3 is a mounting device,
4 is a support part, 5 and 6 are cases consisting of upper and lower lids, 5
a, 6a are long grooves, 12 is an elastic member, 13 is a ring, 16, 17 is a boss portion, 18 is a support member, 20
is a base, 21 is a shaft, and 22 is a hole.

Claims (1)

[Scope of utility model registration request] An attachment device that is attached to at least one end of a string includes a support member for wrapping one end of the string, which is composed of a base and a shaft protruding from the upper and lower surfaces of the base; A case consisting of an upper lid and a lower lid, each of which has a long groove corresponding to the shaft part that faces the center of the upper and lower surfaces of the inner side and extends along the longitudinal direction, and a hole in the side surface into which one end of the string is inserted. The length of the string is adjusted by extending one end of the string from the hole, and the supporting member is rotated eccentrically while moving through the long groove of the upper and lower lids via the shaft portion. An attachment device for a cord for a practice tool, characterized in that: