JPH0366418B2 - - 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 simply the strings a and b that cross and pass through one twist formed by the strings c and d, and the penetrating part e is the thread that comes out in all directions from the penetrating part. It is held only by the twists of 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 has been made to eliminate these drawbacks, and its purpose is to provide a holding force to the penetrating portion itself so that even when a load such as a split is applied to the mesh, the mesh does not shift. The present invention aims to provide a four-through type knotless fishing net that prevents this from occurring.

(Structure of the invention) The present invention has been made to achieve the above object,
In a knotless fishing net in which two-stranded strings are crossed to form four through-holes to form a mesh, two-stranded strings coming from different directions are connected to each other across two adjacent strands. This is a tieless fishing net that is characterized by having threads through the mesh, so even if a large load is applied to the mesh, the mesh will not shift, and by passing the threads through the mesh across two strands, each string will be able to interact with each other. It has a total half-turn twist, which fixes the penetration, and in addition to the above-mentioned slippage resistance, even if one string breaks, it will not come out of the penetration, and it will not be pulled by the net itself. This will prevent fishing from occurring.

(Example) The present invention will now be described in more detail based on illustrated examples. First, in the embodiment shown in FIGS. 1 and 2, two-stranded strings 1 and 2 coming from one side are
and the two-stranded strings 3 and 4 coming from the other side pass through the penetration part 10, but these penetrations do not simply cross each other, but each two-stranded string 3 and 4 coming from the other direction pass through each adjacent two-stranded string. strands,
That is, the twists 6 and 7 formed by the strings 1 and 2
and the twists 8 and 9 formed by the strings 3 and 4
The feature lies in that the through parts 10 are formed by penetrating each other.

The twisting of the penetrating portion when the two twists interpenetrate is clearly visible when the net is knitted, and this state is shown in an enlarged view in FIG. 2. As is clear in the figure, when the two adjacent twists formed by strings 1 and 2 and strings 3 and 4 are mutually penetrated, strings 1 and 3 and strings 2 and 4 are They are intertwined with a twist of half a turn, and the pieces each having a twist further become twisted with a half turn as a whole. In other words, at the same time that strings 1 and 3 have a twist of half a turn, strings 2 and 4 have a twist of a half turn, and these comrades with fire are further twisted by a half turn as a whole. So, 4
Even the main penetration part becomes fixed by the mutual half-turn and the overall half-turn twist.

To explain this four-strand penetrating state in detail with reference to the exploded view of FIG. The figure-eight loops of adjacent twists 8 and 9 formed by the other two-strand strings 3 and 4 are passed through the loops so as to cross each other. At the same time as this crossing, each of the two twisted strings is twisted individually, so one string 1, 3 of the crossed strings and the other string 2, 4 are rotated half a turn each other. At the same time, these half-turn twists are further given a half-turn twist as a whole, creating a penetrating structure that itself has a fixing function as shown in Figure 2. become.

In this way, since the penetrating portion 10 has a structure in which each string has a mutual half-turn twist and a total half-turn twist, even if a load such as a split is applied to the mesh, that is, the penetrating portion, it can be twisted in different directions. Since there is a half-turn twist of the strings coming from, there is no room for misalignment between the strings and no misalignment occurs. In addition, by twisting with a total half-turn, all the strings passing through the penetration part are in a state of being wrapped around each other, and the penetration part itself has a fixing function, so if one string breaks, The broken string does not easily escape from the penetration part 10, and the broken string does not become contagious, so that a stable network formation can be maintained.

(Effects of the Invention) As explained above, the knotless fishing net according to the present invention has a structure in which two strings of two twists coming from different directions are mutually penetrated across two adjacent twists. This provides an excellent effect in that even if a load such as splitting is applied to the penetrating portion, the penetrating portion does not shift, that is, there is no misalignment at all. Furthermore, since the structure is such that strings each having a half-turn twist in the penetrating portion further have a half-turn twist as a whole, all the strings are twisted mutually. In addition, even if one string breaks, it does not come out of the through-hole, which is an excellent effect.

[Brief explanation of drawings]

FIG. 1 is an exploded schematic diagram showing only the penetrating portion of the knotless fishing net according to the present invention, FIG. 2 is an enlarged plan view of the knotless fishing net in a knitted state, and FIG. Schematic diagram showing part of a knotted fishing net disassembled,
FIG. 4 is an enlarged plan view showing only the penetrating portion in the knitted state of the conventional example. 1 to 4...2-twist string, 6 to 9...twist, 10...penetrating part.

Claims (1)

[Claims] 1. 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 straddles two adjacent strands of each other. A tieless fishing net characterized by having a fishing net penetrated through the net.