JPH0741482Y2 - Gut - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a gut for use in a racket for tennis or badminton.

[Conventional technology]

Conventionally, for example, when hitting a ball with a racket for tennis, the gut vibrates due to the impact, and this vibration is transmitted from the player's hand to the elbow, causing inflammation of the elbow (elbow). In order to prevent this inflammation of the elbow,
The applicant has applied for the gut shown in FIG.
This gut has a core material 2 of monofilament, and a core winding 6 is closely aligned and wound around the outer peripheral surface of the core material 2 and is adhered to the surface of the core material 2 by an adhesive 8. . Then, for every two of the core winding yarns 6, one is made to correspond to the
A side winding yarn 11 is wound around the core winding yarn 6 of the book at an outer position. Further, the side winding yarn 11 is covered with a covering layer 10.

When the ball 12 is hit, the gut stretches a little to absorb the impact of the hit like a normal gut, and when the ball 12 is hit, the gut 4th
As shown in the figure, since the side winding yarn 11 wound around with a gap receives the impact of the ball 12, the side winding yarn 11 absorbs more impact force than a normal gut wound closely. be able to. Since a large amount of impact force can be absorbed in this manner, the vibration of the gut is suppressed to a small vibration, and the vibration transmitted to the elbow can be reduced.

[Problems to be solved by the device]

However, the player desires the appearance of a gut in which the shot feeling is softer than that of the conventional gut and the vibration of the gut is hardly transmitted even when an off-hit is performed.

The object of the present invention is to suppress the vibration of the gut that occurs when a ball or the like is hit with a racket to a small vibration, so that the vibration stops in a shorter time than before and the repulsive force is the same as that of a normal gut. It is intended to provide a gut having

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the gut of the present invention is a gut comprising a core material and a plurality of core winding yarns having a diameter smaller than that of the core material wound around at least one layer on the outer peripheral surface of the core material, The core material has an elastic body.

[Action / effect]

Since the gut according to the present invention has the core material and the core winding yarn, it can be attached to the racket while being stretched with a predetermined tension like the conventional gut. Therefore, the ball can be hit back as far as the conventional gut. Further, since the core is provided with the elastic body, the core material and the elastic body are deformed at the time of hitting the ball, and the impact of the ball can be absorbed more than that of the conventional gut, thereby vibrating the gut due to the impact force of the ball. Can be suppressed to a small vibration. As a result, the shot feeling can be softened, and the inflammation of the elbow can be prevented. Also, there is an effect that the vibration of the gut is hardly transmitted even when an off-hit is performed.

If urethane rubber or silicon rubber is used for the elastic body as shown in the embodiment, it is possible to obtain a gut that has an optimum repulsive force and hardly vibrates when the ball is hit.

〔Example〕

An embodiment of the present invention will be described with reference to FIG. 1 showing a cross-sectional view of a gut. This gut has a monofilament core material 1 formed hollow, and a hollow portion 3 of this core material 1
An elastic body 7 is provided on the. The elastic body 7 is made of urethane rubber, silicon rubber, or the like, and is formed to have a hardness capable of absorbing the impact force of the ball. By thus providing the elastic body 7 inside the core material 1, the elastic body 7 is prevented from falling off from the gut when a ball is hit.

Then, a large number of monofilament core windings 6 having a diameter smaller than that of the core material 1 are aligned and wound on the outer peripheral surface of the core material 1 so as to form one layer, and are bonded to the surface of the core material 1 by an adhesive agent 5. is there. Then, the core winding yarns 6 closely contact each other and cover the entire surface of the core material 1. Further, the outer peripheral surface of the core winding yarn 6 is covered with a coating layer 10.

Since the gut of this embodiment can be attached to the racket while being stretched with a predetermined tension like the conventional gut, the ball can be hit back as far as the conventional gut. Then, when the ball is hit, the gut slightly expands and the impact due to the hit can be absorbed to some extent as in the case of the conventional gut, and the core material 1 and the elastic body 7 receive the impact of the ball so that By generating a strain larger than that of the gut core material 2, it is possible to absorb more impact force than before. As a result, the vibration of the gut can be reduced. Then, the sphere can be repelled in a state where the core material 1 and the elastic body 7 are deformed by the striking force.

However, although the core material 1 and the core winding yarn 6 of the above-described embodiment are shown as monofilaments, they may be multifilaments. In this case, all of the plurality of core materials 1 or a part of the plurality of core materials can be formed hollow, and the elastic body 7 can be provided in the hollow portion 3. Also, the core winding yarn 6
Although the core wound yarn 6 is shown as a single layer, the core wound yarn 6 may be formed as two or more layers.

It is also possible to form the core winding yarn 6 of the gut shown in FIG. 1 in, for example, two layers as shown in FIG. 2 without providing the covering layer 10.

Further, in this embodiment, one hollow portion 3 is formed inside the core material 1 and the elastic body 7 is provided therein. However, although not shown in the drawing, a plurality of hollow portions 3 are formed inside the core material 1. Forming the hollow part 3,
The elastic body 7 may be provided therein,
It is also possible to bond one or a plurality of elastic bodies 7 to one or a plurality of core materials 1 in which the elastic body 7 is not provided inside with an adhesive.

[Brief description of drawings]

1 is a sectional view of a gut according to an embodiment of the present invention, FIG. 2 is a sectional view of a gut according to another embodiment of the present invention, FIG. 3 is a sectional view of a conventional gut, and FIG. It is sectional drawing which shows the state when a ball is hit with the gut shown in the figure. 1 ... core material, 3 ... hollow part, 7 ... elastic body, 6 ... core wound yarn.

Claims (1)

[Scope of utility model registration request] 1. A gut comprising a core material and a plurality of core winding yarns having a diameter smaller than that of the core material wound around at least one layer on the outer peripheral surface of the core material, wherein the core material has an elastic body. Gut characterized by.