JPH0567251B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a net opening opening device made of a flexible material such as canvas used in seine fishing gear such as a trawl net.

[Prior art and its problems] In conventional seine netting, metal and wooden expansion plates are widely used as net opening opening devices, but these are not only quite heavy and expensive, but also expensive. , it is inconvenient to handle, and it is extremely dangerous when operating in rough weather. Therefore, in place of these, there are many mesh opening opening devices made of canvas, etc., which are light and easy to handle.
Each has its own advantages and disadvantages, and the reality is that they are not yet ready for practical use.

For example, regarding the application filed by the applicant,
Regarding Publication No. 21081, this is a net expanding tool in which a flexible plate-like member is bridged and fixed between a plurality of support plates each having a streamlined upper surface so as to cover the streamlined surface. However, this is done by attaching a float to the front edge when opening the net opening upward, and by attaching a sinker to the leading edge when opening the opening downward. It was something that could be put to good use.

However, when the screen opening is to be expanded laterally to the left and right with this net expanding tool, it cannot be used for that purpose because the net expanding tool does not have a special configuration that has an angle of attack on the outside. was almost impossible.

Therefore, the Utility Model Application No. 57--
As seen in Publication No. 107368, an attempt was made to compensate for this drawback by providing an auxiliary opening function part to the screen opening device, but it was difficult to attach the screen opening device to the seine net. In addition, there was a problem in that it was complicated and, depending on how it was attached, it was not always possible to achieve the desired effect.

An object of the present invention is to provide a net opening opening device that can be rationally installed in a seine net and can be increased or decreased as desired.

[Means for Solving the Problems] The structure of the present invention that solves the problems of the prior art is such that the main body 3 is made of a flexible sheet material such as a canvas, and the front edge of the main body 3 is provided with a Both ends of a plurality of tension bands 4, which are substantially parallel and whose lengths are gradually shortened from the front edge to the rear edge, are sewn at appropriate intervals, and the front part has a wide opening and is attached to the center of the expanded net main body 3. In a net spreading device for seine fishing gear in which an auxiliary spreading/spreading part 7 of a tall structure with a narrow rear opening is formed, the net spreading main body 3 is provided with a large number of auxiliary strips in a direction orthogonal to the front edge direction thereof. The bands 5 are sewn at appropriate intervals, and the front and rear ends of the auxiliary band 5 are made to protrude from the front and rear edges of the net expansion main body 3, and each of the protruding ends is formed into an annular attachment rope insertion part 6, on the other hand,
A plurality of connecting portions 18 are protruded from both side edges of the main body 3 at appropriate intervals.

[Example] Next, details of an example of the present invention will be described with reference to the drawings.

Figure 1 is a plan view of the screen opening expansion device, Figure 2 is an enlarged side view of the same as above, Figure 3 is an enlarged front view of the same as above, Figure 4 a.
4B is a perspective view of the screen expansion main body, FIG. 5 is a perspective view of a portion of the screen opening expanding device in use, and FIG. 6 is an enlarged perspective view of a portion of the same as above. , FIG. 7 is a plan view of an example in which the device of the present invention is attached to a seine main body, and FIG. 8 is a side view of the same.

FIG. 1 shows an embodiment of a net opening opening device 2 to be attached to a seine net according to the present invention, and shows a rectangular net opening main body 3 made of polyester fabric and constituting the net opening opening device 2. The front edge, in detail, a tension band 4 made of a plurality of nylon woven fabric bands that are made shorter in length from the bottom to the top of the paper in Figure 1.
Both ends are sewn to the inside of the expanded net main body 3 at an appropriate distance so as to be almost parallel to the front edge of the expanded net main body 3, and with an appropriate seam allowance. , a part of which forms an auxiliary opening/expanding portion 7 having a sagging structure such that a side surface is shaped like a cone or a truncated cone.

In addition, a large number of auxiliary bands 5 are sewn at appropriate intervals on the upper surface of the main body 3 in the longitudinal direction, that is, in a direction perpendicular to the horizontal axis direction of the page, and these auxiliary bands 5 are The annular attachment rope insertion portion 6 is formed by protruding from the front and rear edges of the net main body 3, respectively, and folding back and sewing the protruding ends. Further, a plurality of connecting portions 18 are protrudingly provided on both side edges of the net expansion main body 3 at appropriate intervals. In the embodiment shown in FIG. 1, a plurality of net expansion bodies 3 are arranged in series.

FIG. 4 is a developed view of the screen expanding body 3 constituting the screen opening expanding device 2, which is cut with a margin at the front edge to form the auxiliary opening and expanding section 7. . This example is based on the above-mentioned Utility Model Publication No. 57-107368.
Similar to the one shown in the publication, the auxiliary opening/expanding action part 7 forms part of the side surface of a cone (half-cone shape), but by cutting the rear edge with some allowance. The auxiliary opening/expanding portion 7 can also form part of the side surface of a truncated cone (half-truncated cone).

When forming the auxiliary opening/expanding portion 7, for example, the fabric constituting the net expanding body 3 is
By cutting and forming the net as shown in Fig. 4 and establishing the fold line 7a, the front and rear edges of the expanded net main body 3 are made into parallel straight lines, for example, into a semi-conical shape as shown in Fig. 4 b. In addition, in order to ensure the sagging structure of this auxiliary expansion action part 7, the tension band 4 is used. In the expanded net main body 3 formed in this way,
The aforementioned auxiliary bands 5 are sewn at appropriate intervals.

FIGS. 5 and 6 are explanatory diagrams of the net opening opening device 2 attached to the seine net of the present invention, and FIG. 6 is an enlarged view of the right side portion of FIG. 5. The screen opening opening device 2 as shown in FIG. The rear end attachment rope 17 of the net opening expanding device 2 is inserted through the attachment rope insertion portion 6, and the trailing edge portion 14 of the net opening expanding device 2 is attached to the front of the seine net main body 1 via the rear end attachment rope 17. It is fixed to the mesh part other than the edge part 15.

In addition, the screen opening expanding device 2 is attached to the attachment rope insertion portion 6 that is often attached to the front edge of the screen opening expanding device 2.
The front end attachment rope 16 is inserted through the front end attachment rope 16, and the tension rope 12 of the screen opening opening device is inserted into the front end attachment rope 16.
And, the auxiliary tension ropes 13 of the net opening opening device 2 are attached as shown in the figure, and the other end of each is attached to the racing line (muscle net) 1 of the seine main body 1.
1, and is attached to an appropriate location on the Shio-kiri rope 10.

In addition, as shown in FIGS. 5 and 6, when a plurality of mesh opening expanding devices 2 are installed in a line horizontally with respect to the seine main body 1, they are installed on both side edges of the adjacent mesh expanding main bodies 3. The connecting portions 18 are abutted against each other and connected by connecting tools 19, thereby integrating the plurality of mesh opening expanding devices 2.

Apart from this embodiment, the rear edge portion 14 of the screen opening opening device 2 may be attached to a rope or the like that is previously attached to the screen fabric.

FIG. 7 is a plan view of an embodiment in which the device of the present invention is attached to a seine net, and FIG. 8 is a side view thereof.
In this embodiment, the net opening opening device 2 is connected to the seine main body 1.
It is attached near the opening of the side net, so that the opening can be opened to the left and right, but it is not attached to the upper or lower net, and the opening cannot be opened upward. The structure is such that the opening of the net is opened and expanded downward by the float.

In addition, apart from this embodiment, when the net opening opening device 2 is arranged near the opening of the upper net of the seine main body 1, a float is provided at the front edge of the device 2, especially for its auxiliary opening and opening function. A float is attached to the front edge of the section 7 to make it easier to set the initial angle of attack. An even better effect can be obtained by attaching a dipstick or an equivalent to the edge, especially a dipstick or an equivalent to the front edge of the auxiliary expansion action section 7 to make it easier to set the initial angle of attack. can get.

In the figure, 8 is a net pendant rope, and 9 is a head rope.

[Effects of the Invention] As described above, according to the configuration of the present invention, the following effects can be obtained.

(a) At the initial stage of seine fishing gear, some of the seawater that flows in through the front opening of the auxiliary spreading section formed in the main body of the net, escapes from the rear of the auxiliary spreading section.
The remaining intruding seawater swells the auxiliary opening and spreading action part, exerting a force to open the main body of the net outward, and as the speed of the net increases, this action changes greatly, causing the main body of the seine to expand. (b) Particularly in the present invention, not only can the mesh opening be greatly expanded, but also the auxiliary opening and expanding portion can be easily formed by sewing the tension band. Then, a large number of auxiliary bands are sewn at appropriate intervals in a direction perpendicular to the front edge direction, and the front and rear ends of the auxiliary bands are made to protrude from the front and rear edges of the expanded mesh main body, and each of the protruding ends Since this is an annular attachment rope insertion portion, the net opening opening device can be easily attached to the seine main body by inserting a rope through the attachment rope insertion portion.

In addition, the multiple auxiliary belts can assist the front and rear edges of the main body of the net, and prevent the main body of the net from being unintentionally bent due to seawater resistance during seine operations.
Fishing efficiency can be improved without deforming the auxiliary spreader and reducing the net spreading efficiency.

(c) In addition, since a plurality of connecting parts are provided at appropriate intervals on both side edges of the net expanding body, when multiple mesh opening expanding devices are attached to the dragging net body in a horizontal line, they can be easily connected to each other. The connecting parts that are butted together can be easily connected with a connecting tool, etc., and together with the action of the attachment rope insertion part, multiple mesh opening opening devices can be easily and securely attached, Significant labor savings can be achieved in the tailoring of seine fishing gear.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the screen opening expanding device, Fig. 2 is an enlarged side view of the same as above, Fig. 3 is a front view of the same as above, Fig. 4 a is a developed view of the screen expanding main body, and Fig. 4 b is a developed view of the mesh expanding main body. A perspective view of
Figure 5 is a perspective view of the screen opening expansion device in use;
The figure is an enlarged perspective view of a part of the same as above, FIG.
The figure is a side view of the same as above. 2... Screen opening expanding device, 3... Screen expanding body, 4...
Tension band, 5...Auxiliary band, 6...Mounting rope insertion part, 7...Auxiliary expansion action part, 18...Connection part, 1
9...Connector.

Claims (1)

[Scope of Claims] 1. At the inner central part of the net expanding body 3 made of a flexible sheet material such as canvas, the net is approximately parallel to the front edge of the expanding net main body 3, and is successively shorter from the leading edge to the trailing edge. Both ends of a plurality of tension bands 4 are sewn at appropriate intervals, and an auxiliary opening/expanding part 7 is provided in the center of the net expanding body 3 with a sagging structure having a wide opening at the front and a narrow opening at the rear. In the net expansion device for seine fishing gear, a large number of auxiliary bands 5 are sewn onto the net expansion main body 3 at appropriate intervals in a direction perpendicular to the front edge direction of the main body 3, and the auxiliary bands 5 The front and rear ends of the net are made to protrude from the front and rear edges of the net expansion main body 3, and each of the protruding ends is formed into an annular attachment rope insertion part 6, and on the other hand, on both side edges of the net expansion main body 3, suitable A net opening opening device for seine fishing gear, characterized in that a plurality of connecting portions 18 are protruded at intervals.