JPH0645461U - Nodular cord - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a knotless cord that is beautiful without a knot of yarn, has excellent functionality, and has a large strength of a connecting portion. [Structure] Thread 2 inserted inside by inserting another thread 2 inside the sleeve 1 made of natural fibers or synthetic fibers and applying tension in the length direction of the sleeve 1.
A knotless cord formed by connecting the outer sleeve 1 by tightening it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a knotless cord suitable for industrial materials and sports fields, which require beautiful and functional connection between yarns and yarns, without the need for knotting, to make a strong connection.

[0002]

[Prior art]

 Conventionally, when connecting two yarns, there are various knots such as a single knot, a bow knot, a figure eight knot, and a fisherman's knot, and among these knots, depending on the use of the yarn. Therefore, the tying method which seems to be the best empirically has been used. However, when the materials of the yarns are different, for example, metal fibers or glass fibers, which have no elongation, and fibers having a large elongation cannot be connected by tying. In some cases, an adhesive is used at the same time as connecting the yarns according to the above-mentioned tying method, but in the case of connecting different yarns, it depends only on the adhesive strength of the resin, which is suitable for practical use. Not not.

[0003]

[Problems to be solved by the device]

 As described above, in the yarn connecting method according to the prior art, since a knot is always generated in the yarn, the yarn is easily cut at the knot portion, and the linear strength originally possessed by the yarn is increased. It will drop significantly. Therefore, a considerably thick yarn must be used, resulting in a large knot and various resistances.

For example, in the case of a fishing line, there is a large resistance to water flow, and in the case of a sports kite cord, there is a large resistance to air, which deteriorates operability. In addition, there are individual differences in the way of tying, and the finished product is not constant.

Further, as described above, there are cases where the yarns are connected by various tying methods at the same time when the yarns are connected, but in this case, there is a problem in the adhesive strength and the adhesive time, and the workability is remarkably poor. , Lacks productivity. Therefore, the conventionally used yarn connecting methods have a problem that various resistances are large, they are easily cut, and the original functionality is greatly deteriorated.

The present invention solves such a problem, and an object of the present invention is to provide a knotless cord that is beautiful without a knot of a yarn, has excellent functionality, and has a large connection portion strength. is there.

[0007]

[Means for Solving the Problems]

 In view of the above problems, the inventor of the present invention has conducted extensive studies, and as a result, has devised a knotless cord having excellent performance, which is far easier to make than the conventional connection method using a knot.

That is, according to the present invention, another thread is inserted into the inside of the sleeve made of natural or synthetic fiber, tension is applied in the length direction of the sleeve, and the thread is inserted inside. The gist is a knotless cord characterized in that the outer sleeve is connected by being tightened.

The present invention will be described in detail below. First, in FIG. 1 and FIG. 2, 1 is a sleeve made of fiber, 2 is a thread to be inserted into this sleeve 1, and XY is an insertion length of the thread 2 into the sleeve 1. By the way, as shown in FIG. 3, the tip of the yarn 2 inserted in the sleeve 1 may be projected from the sleeve 1, and as shown in FIG. 4, the yarns 2a and 2b made of different materials may be attached to the sleeve 1. You may insert from both sides.

In order to obtain a cord (string) according to the present invention, first, the sleeve 1 is made of natural fibers such as cotton and wool, synthetic fibers such as nylon, polyester, polyethylene, or a combination of natural and synthetic fibers. Then, the other thread 2 to be connected is inserted into the sleeve 1, the insertion side end of the sleeve 1 is fixed by hand, and then the sleeve 1 is pulled in the longitudinal direction to apply tension. Due to the expansion of the sleeve 1, pressure is applied to the inside, and the yarn 2 inserted inside is tightened at the distance between X and Y of the sleeve 1, so that a large frictional resistance is generated there and the yarn 2 is Can't get out of sleeve 1. In this case, the adhesive may be thinly applied to a part or the whole of XY of the sleeve 1.

The sleeve 1 used in the present invention is preferably designed to have a linear strength equal to or higher than that of the thread 2 to be inserted.

[0012]

[Action]

 With this structure, the cord has no knot of yarn, is beautiful, has excellent functionality, and has a high strength at the connecting portion.

[0013]

【Example】

 Hereinafter, the present invention will be specifically described with reference to examples. In creating the knotless cord (string) of the present invention, first, in order to prepare two types of sleeves with inner diameters of 0.30 m / m and 0.60 m / m, high strength polyethylene multifilament with linear strength of 25 g / d or more. 8 strings were made using a thread (200d). Next, insert one end of another thread into this sleeve to create a cord (string) without a knot, and improve the strength of the present invention including the connection part by Shimadzu Corporation Autograph (S- 100 type). For the purpose of comparing the effects of the embodiments of the present invention, a single knot was made with the same yarn as the yarn inserted into the sleeve, and the knot strength was measured in the same manner. The results are shown in Table 1.

[0014]

[Table 1]

Also from Table 1 above, the connection according to the embodiment of the present invention can greatly improve the strength as compared with the connection of the comparative example.

[0016]

[Effect of device]

 As described above, according to the present invention, it is possible to connect yarns of the same or different materials, and there is no knot, so there is no decrease in strength, the appearance is beautiful, and the resistance to water and air depends on the application. And can provide very functional code. Therefore, it is possible to easily connect a yarn such as a steel cord or a glass cord which has a small elongation and cannot be tied.

When an instantaneous function is required as in the sports kite cord, the thread inserted between the sleeves is shortened by reducing the X-Y distance to reduce the pressure applied inward. If the tip of the cord is exposed to the outside of the sleeve, it has many advantages such as the fact that the unevenness of the cord length can be easily corrected by moving the tip of the yarn.

[Brief description of drawings]

FIG. 1 is a side view showing a state before connection between a sleeve and a yarn according to the present invention.

FIG. 2 is a sectional view showing the same connection state.

FIG. 3 is a sectional view showing another connection state of the sleeve and the yarn according to the present invention.

FIG. 4 is a sectional view showing still another connection state between the sleeve and the yarn according to the present invention.

[Explanation of symbols]

 1 Sleeve 2 Thread 2a, 2b Thread

Claims (1)

[Scope of utility model registration request] 1. A thread made of a natural fiber or a synthetic fiber, etc. is inserted into the inside of a sleeve to apply tension in the length direction of the sleeve, and the thread inserted inside is used as an outer sleeve. A knotless cord characterized by being connected by tightening.