JPS61154581A - Auxiliary tool for applying gut - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tensioning aid used for tensioning rackets for badminton, squash, racquetball, softball tennis, hardball tennis, and the like.

[Conventional technology]

BACKGROUND ART A racket for badminton or the like has guts stretched vertically and horizontally through a plurality of holes drilled in the frame of the racket.

To tighten the strings, first thread the strings vertically through the holes drilled in the frame of the racket, and then string them horizontally. Of course, it may be stretched in the horizontal direction and then stretched in the vertical direction.

By the way, Gatsuto can be stretched to the tension of the user's preference.
When tightening the strings, you must hold the strings so that they do not loosen or tighten them properly, and you will not be able to tighten them to the desired tension.

Conventionally, an awl has been used as an auxiliary tool for tightening strings without loosening them. (First Conventional Gut Tightening Auxiliary Tool) A method of tensioning the string while preventing it from loosening using this awl will be explained.

That is, in this method, as shown in FIGS. 9(A) and 9(B), the guts 74 are passed through opposing first holes 72 and second holes 73 made in the frame 71 of the racket,
While pulling with the desired tension, connect the second hole 73 and the gut 7.
Insert an awl 76 in the direction of arrow a into the gap 75 with 4, and press the gut 74 with the pressure. in this way,
An awl 76 is inserted into the hole through which the string 74 is passed, and while pressing the string 74 so that it does not loosen, the strings 74 are successively passed through the holes and tensioned to the desired tension.

Next, another conventional tensioning aid will be explained.

FIG. 10(A) is a plan view of a second conventional tensioning aid, and FIGS. 10(B) and (C) are front views showing its operation.

In the figure, 81 is the main body, 82 is a movable plate made of an elastic body, and 83 is a gap between the movable plate 82 and the main body 81 (Fig. 10,
CB)), 84 is a lever, 85 is a screw that rotatably supports the lever 84 on the main body 81, 86 is a rod that is attached to the lever 84 and passes through the movable plate 82, the main body 81, and the movable plate 82, 87 is a horizontal 88 is a longitudinal string (warp), and 89 (FIG. 10(A)) is a groove provided at the front end of the movable plate 82 and the main body 81 for passing the warp 88.

A method of tensioning the gut without loosening it using an auxiliary tool with such a structure will be explained.

That is, first, while passing the gut through the hole in the racket frame and pulling it with the desired tension, the auxiliary tool in the state shown in FIG. 88 until it touches the groove 89' of the main body 81.

In this state, when a force is applied to the lever 84 in the direction of the arrow and the lever 84 is rotated in the direction of the arrow C, the movable bodies 82 made of elastic bodies approach each other, resulting in the state shown in FIG. 10(C). Two weft threads 87 are held between the movable plates 82 at the same time.

In this way, the strings are successively passed through the holes in the frame and stretched while being held down by the auxiliary tool while being pulled with the desired tension.

[Problem that the invention seeks to solve]

By the way, the above-mentioned conventional tensioning aid has the following problems.

In other words, if you tighten the string using an awl, which is the first conventional string tensioning aid, by inserting the pointed awl into the hole in the frame, you can tighten the hole in the frame made of wood or metal. This often results in damage to the plastic eyelets placed between the parts, or in crushing or damaging the thin guttets.

In particular, if the gut is crushed or damaged by the sharp tip of the awl, this will cause the gut to break.

Furthermore, when pressing down the string with an awl, the string tends to move back, making it difficult to tighten the string tightly.

On the other hand, the conventional second tensioning aid is a set of levers and has a complicated structure, making the entire device large and heavy, requiring a lot of labor for tensioning work, and being expensive. .

The present invention solves the problems with such conventional aids.

[Means for solving problems]

In order to solve the above-mentioned conventional problems, the present invention includes a support piece and a rotating shaft that is located above the support piece and is spaced apart from the support piece by a predetermined distance in a substantially lateral direction. a movable piece that is rotatable; a movable piece that is located below the support piece and that is rotatable about a rotation axis provided substantially laterally at a predetermined distance from the support piece; and each of the movable pieces an elastic body that moves in a direction to bring the front end of the movable member closer to the support piece, and at least one series of grooves communicating in the vertical direction is provided on the front end surfaces of the support piece and each of the movable pieces. .

[Effect]

When the rear ends of the rotatably supported movable pieces are applied with a finger in the direction toward the support pieces, the elastic bodies are deformed, the rear ends of each move closer to each other, the front ends open, and the two pieces are separated. A gap is created between the front end of the movable piece and the front end of the support piece. Insert one gut into each of these two gaps, and when you release your fingers, the front end of the movable piece closes due to the force of one elastic body trying to return to its original position, firmly holding the two guts at the same time. In this case, the two upper and lower guts have tension applied to one in the right (or upward) direction and the other in the left (or downward) direction. firmly fixed in position.

Note that the grooves provided at the front ends of the support piece and the two movable pieces are as follows:
This is for passing the string in the former direction when holding the string that is being stretched in the horizontal (or vertical) direction after the string is stretched on the racket frame in the vertical (or horizontal) direction.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1(A) is a left side view of the first embodiment of the present invention.

Figure 1 (CB) is a front view, Figure 1 (C) is a right side view,
FIG. 1(D) is a plan view, and FIG. 1(E) is a partially enlarged sectional view of FIG. 1(B).

In the figure, 1 is a support piece, 1' is a protrusion ' provided integrally with the support piece, 1' is two holes provided in the support piece 1, and 2 is one each above and below the support piece 1. A movable piece provided,
2' is a hole provided in the movable piece 2, into which the convex portion 1' of the support piece 1 fits; 3 is provided in a substantially lateral direction at a predetermined distance from the support piece 1; Rondo 4, which serves as a rotating shaft rotatably supported on the support piece 1, has both ends fixed to each of the movable pieces 2, passes through the hole 1' of the support piece 1, and connects the front end of each movable piece 2 to the support piece. 1, two coil springs (elastic bodies) that operate in a direction approaching 1; 5 is a series of grooves that communicate in the vertical direction provided on the front end surfaces of the movable piece 2 and the support piece 1 for passing the gut; 16 is a movable piece; At the convex part on the front end of 2,
The gut is held together with the convex portion at the front end of the support piece 1. For example, a non-slip groove (not shown) is provided on the surface of the convex portion 16 on the supporting piece 1 side in the longitudinal direction of the movable piece 2 in order to securely hold the gut. Note that this groove for preventing slippage may be provided in the convex portion of the front end of the support piece 1.

In addition, other structures may be used to prevent slipping. For example, rubber may be provided.

In the tensioning aid with such a configuration, when the two movable pieces 2 are grasped with fingers and force is applied in the direction of arrow d, the coil spring 4 contracts and is rotatably supported by the support piece 1. The front ends 21 of the two movable pieces 2 open in the direction of the arrow e, and two gaps are created between them and the support piece 1. Insert the guts into each gap one by one while pulling the string with the desired tension. When the auxiliary tool is inserted until the gut touches the groove 5' and one hand is released, the front ends 2' of the two movable pieces 2 try to return in the direction of arrow g due to the force of the coil spring 4 trying to return to its original position. At the same time, hold the book tightly. The operation will be described in detail in the following second embodiment.

FIG. 2(A) is a left side view of the second embodiment of the present invention;
Figure (B) is a front view, Figure 2 (C) is a right side view, Figure 2 (
D) is a plan view.

The basic structure of the auxiliary tool of the second embodiment of the present invention shown in these figures is almost the same as that of the first embodiment. Figure 1 (A
) to (E) denote the same parts.

In the figure, 6 is a support plate for rotatably supporting the two movable pieces 2 on the support piece 1, and 7 is a support plate for supporting the two movable pieces 2 on the support piece 1.
Screws 3 for fixing the two movable pieces to This is a rond that serves as a rotating shaft that rotatably supports the piece 2 on the support piece 1.

The auxiliary tool of this embodiment also operates in the same way as the auxiliary tool of the first embodiment. Figure 3 (
This will be explained in detail using A) to (G).

3(A) to 3(C) are front views showing the operation of the auxiliary tool according to the second embodiment of the present invention, and FIG.
C) is a plan view, FIG. 3(E) is a diagram showing the state in which the auxiliary device is attached to the racket gut, and FIG. 3(F) is a plan view of FIG. 3(C).
) is an enlarged left side view of FIG. 3(G), and FIG. 3(G) is an enlarged right side view of FIG. 3(C).

First, as shown in FIG. 3(A), when you grasp the two movable pieces 2 with your fingers (not shown) and apply force in the direction of arrow d, the coils will move as shown in FIG. 3(B). When the springs 4 contract, the front ends 2' of the movable pieces 2 rotatably supported by the support piece 1 open in the direction of arrow e, creating two gaps 8 between them and the support piece 1.
occurs. Insert the weft threads 9 one by one into these gaps 8 while pulling the string with the desired tension, and insert the weft threads 9 into the grooves 5' of the auxiliary tool.
Insert until it touches the weft threads 9 and the warp threads 10. If you let go of your hand in this state, Figure 3 (C), (D), CF), (
As shown in G), the force in the direction of arrow f that causes the coil spring 4 to return to its original state generates a force in the direction of arrow g at the front ends 2' of the two movable pieces 2, causing the front ends 2' of the two movable pieces 2 to each firmly clamps two weft threads 9 at the same time. in this case,
As shown in Fig. 3 (F), tension is applied to the gut 9' to the right and to the left to the left, so by holding both of them at the same time, the gut can be firmly fixed in the same position. I can do it.

In this way, while pulling the strings passed through the holes in the frame of the racket with a desired tension, the strings are successively passed through the holes in the frame and stretched while being held between the strings by the auxiliary tool.

FIG. 4(A) is a plan view showing a third embodiment of the present invention, and FIG. 4(B) is an explanatory diagram of its operation. The basic configuration of the third embodiment is almost the same as that of the first embodiment, and in FIG. It is constructed in a checkerboard pattern, with only the diagonally shaded areas having more friction on the surface. Note that this anti-slip 11 may have other configurations.

Reference numeral 12 denotes convex portions provided on both sides of the rear ends of the two movable pieces 2, which are used as shown in Figure 4 (B) to shift the stretched gut in the direction of the arrow to adjust the position of the gut. It is for.

FIG. 5 is a front view showing a fourth embodiment of the present invention. In the first and second embodiments described above, both ends of the coil spring 4 were attached to the movable piece 2, but in this embodiment, both ends of the coil springs 4 and 4' were attached to the movable piece 2, respectively.
and attached to the support piece 1.

FIG. 6 is a front view showing a fifth embodiment of the present invention. In this embodiment, a leaf spring 1 is used instead of a coil spring as the elastic body.
An example using 3 is shown below.

FIG. 7 is a front view showing a sixth embodiment of the present invention. In this embodiment, a substantially U-shaped spring 14 with both ends 14' attached to each of the movable pieces 2 is used as an elastic body. This is an example.

FIG. 8 is a front view showing a seventh embodiment of the present invention, in which one end 15' of the elastic body is attached to the support piece 1.

This is an example using two ribs 15 whose other ends 15'' are attached to the movable piece 2.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, such as the number and shape of the support piece 1 and the movable piece 2, etc., and various modifications can be made within the scope of the claims. It goes without saying that it is possible.

The materials of the support piece 1 and the movable piece 2 are preferably light and strong, such as aluminum alloy 1 or resin, but are not limited to these materials.

〔Effect of the invention〕

As is clear from the above explanation, it is possible to tighten strings using the string tensioning aid of the present invention.

Since it is possible to firmly hold two strings with tension applied in different directions without damaging the strings like a conventional awl, it is possible to prevent the strings from going backwards and to tension them with the desired tension. In addition, compared to the conventional tightening aid that consists of a set of levers, the structure is simpler, so it can be made smaller and lighter. Therefore, the manufacturing cost can be reduced by a few minutes.
It can be reduced from a few tens of inches, and is easy to handle.

It is possible to save labor in tensioning work.

As described above, the effects of the present invention are remarkable.

[Brief explanation of drawings]

Fig. 1(A) is a left side view of a tensioning aid according to the first embodiment of the present invention, Fig. 1(B) is a front view, and Fig. 1(C)
1(D) is a plan view, FIG. 1(E) is a partially enlarged sectional view of FIG. 1(B), and FIG. 2(A) is a second embodiment of the present invention. Figure 2 (B) is the left side view of the
Figure (C) is a right side view, Figure 2 (D) is a plan view, Figure 3 (
A) to (C) are front views for explaining the operation of the auxiliary tool of the second embodiment of the present invention, and FIG. 3(D) is a plan view of FIG. 3(C), and FIG. E) is a diagram showing the state in which the auxiliary device is attached to the racket gut, and Figure 3 (F) is the diagram shown in Figure 3 (
C) is an enlarged left side view, and FIG. 3(G) is an enlarged right side view of FIG. 3(C). FIG. 4(A) is a plan view showing the third embodiment of the present invention, FIG. 4(B) is an explanatory diagram of its operation, and FIG. 5 is a front view showing the fourth embodiment of the present invention. 6 is a front view showing a fifth embodiment of the invention, FIG. 7 is a front view showing a sixth embodiment of the invention, and FIG. 8 is a front view showing a seventh embodiment of the invention. 9th
Figure (A) is an explanatory diagram of the first conventional tensioning aid;
Figure 9 (B) is a partially enlarged view of Figure 9 (A), Figure 1O (
A) is a plan view of the conventional second tensioning aid;
θ diagrams (B) and (C) are front views for explaining the operation, respectively. 1... Support piece 2... Movable piece 4.4', 13.14.15.15'... Elastic body 5.
...Mizoshiro's patent attorney Junnosuke Nakamura7. Me - ~ U] Chapter 4, 1! 7 figure 8 figure 1 ke'9rA (A) +10 cabinet (A)

Claims (1)

[Claims] a support piece; a movable piece located above the support piece and rotatable about a rotation axis provided substantially laterally at a predetermined distance from the support piece; and a movable piece below the support piece; ,
A movable piece that is rotatable about a rotation axis provided substantially laterally at a predetermined distance from the support piece, and an elastic body that moves in a direction to bring the front end of each movable piece closer to the support piece. A string tensioning aid, characterized in that at least one series of grooves communicating in the vertical direction is provided on the front end surfaces of the support piece and each of the movable pieces.