JPH0364618B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a knotless fishing net used for purse seine or trawl nets, etc., and in particular a four-penetration type fishing net having a penetrating portion in which two-stranded strings are crossed. It concerns knotless fishing nets.

(Prior art) Generally, this type of four-penetration knotless fishing net is
It has the penetration part shown in the figure and FIG. To explain one of the penetration parts, in order to form a mesh, two twisted strings a, b, c, and d approach each other from different directions while being twisted, and each string crosses to form the penetration part e. As the string is formed and further twisted, the next penetrating portion is formed between the strings and other strings, so that a mesh is sequentially formed. In this case, the penetrating part e is only the strings a and b that cross and pass through one twisted loop formed by the strings c and d, and the penetrating part e comes out in all directions from the penetrating part. It is held only by twisting yarn legs A, A', B, and B'.

With such a configuration, when a load such as splitting is applied to the mesh, the penetrating portion e easily shifts against the twisting of the yarn legs, resulting in a dragging condition, which only worsens the quality of the net. If one of the two-stranded string breaks, it will easily slip out because the penetrating part itself has no holding power, and the other penetrating parts will also easily shift.
It has the disadvantage that so-called misalignment is likely to occur.

(Object of the Invention) The present invention was made to eliminate these drawbacks, and its purpose is to provide a holding force to the penetrating portion itself to prevent misalignment, and to prevent one string from breaking. The purpose of the present invention is to provide a knotless fishing net with four penetrating rods that does not slip out of the penetrating portion even when the net is penetrated.

(Structure of the invention) The present invention has been made to achieve the above object,
In a knotless fishing net in which two-twisted strings are crossed to form four through-holes to form a mesh, each of the two-twisted strings coming from different directions rotates once at the through-hole. This is a tieless fishing net that is characterized by having a twist of 200 mm, and one string coming from each direction has one twist at the penetration part, so even if a large load is applied to the mesh, there is no misalignment. In addition, the penetration part is fixed by one turn of twist and the overall half-turn of the other two strings, and even if one string breaks in addition to the above-mentioned slippage resistance, the penetration part will not be damaged. This prevents the net from slipping out of the net and causing no drag on the net itself.

(Example) The present invention will now be described in more detail based on illustrated examples. First, in the embodiment shown in FIGS. 3 and 4, two-stranded strings 1 and 2 coming from Ichikata
and two twisted strings 3 and 4 coming from the other direction pass through the penetration part 5, but this penetration is not simply crossing, but one of each of the two twisted strings coming from different directions. The characteristic lies in that the strings 1 and 3, that is, the strings 1 and 3, are twisted by one rotation in the penetrating portion 5.

This one-turn twist in the strings 1 and 3 is noticeable when the net is knitted, and this state is shown in an enlarged view in FIG. 4. As is clear from the figure, the strings 1 and 3 have a complete twist on the back side, and the other strings 2 and 4 have a half turn as a whole compared to the twist of the strings 1 and 3 that have one turn. It becomes twisted. This means that two twisted strings coming from different directions are further twisted after passing through four strings, resulting in a total half-turn, and even in the case where four strings pass through, the one-turn twist and the half-turn twist are different. It becomes fixed by itself.

To explain this four-strand penetration state in detail with reference to the exploded view of FIG. Then, one of the two twisted strings 1 and 2 is passed through so as to cross within each loop. Since this process includes a step in which each of the two twisted strings is twisted at the same time, one of the crossed strings, strings 1 and 3, has one rotation of twist, while the other strings 2 and 4 have one turn of twist. has a half-turn twist as a whole, and becomes a penetrating structure that itself has a fixing function as shown in FIG.

In this way, since there are strings 1 and 3 with one twist in the penetration part 5, even if a load such as a split is applied to the mesh, that is, the penetration part, the twist of the strings coming from different directions is Because there is a twist,
There is no room for misalignment between the strings, and misalignment will not occur. Also, in the penetrating part, strings 1 and 3, which have been twisted by one turn, and other strings 2, 4, are twisted by a half turn, so that all the strings passing through the penetrating part are wrapped around each other, and the penetrating part itself is twisted. has a fixed function, so
Even if one string breaks, the broken string will not come out of the penetration part 5, and the break will not cause infection, so a stable network can be maintained.

(Effects of the Invention) As explained above, the knotless fishing net according to the present invention has a structure in which each of the two twisted strings coming from different directions has one twist at the penetrating part. Therefore, even if a load such as splitting is applied to the penetrating portions, there is no misalignment of the penetrating portions, that is, no misalignment at all, which is an excellent effect. Furthermore, since the string has a one-turn twist in the penetrating part and the other two strings have a half-turn twist overall, all the strings wrap around each other and form a single twist. This has an excellent effect of preventing the string from slipping out from the penetrating portion even if it breaks.

[Brief explanation of drawings]

Fig. 1 is an exploded schematic diagram of a part of a conventional four-penetrating knotless fishing net, Fig. 2 is an enlarged plan view showing only the penetrating portions of the conventional example in a knitted state, and Fig. 3 The figure is an exploded schematic diagram showing only the penetrating portion of the knotless fishing net according to the present invention, and FIG. 4 is an enlarged plan view of the penetrating portion in a knitted state. 1 to 4...Two-stranded string, 5...Penetrating part.

Claims (1)

[Scope of Claims] 1. In a knotless fishing net in which the mesh is constructed by crossing two twisted strings and forming four penetrating strings, one of the two twisted strings coming from different directions A tieless fishing net characterized in that the string has one twist in the penetrating portion. 2. A knotless fishing net according to claim 1, characterized in that two strings each having a twist of one turn and the other two strings have a twist of approximately half a turn as a whole at the penetrating portion. .