JPH0354093A - Floating body for locking fishing net - Google Patents

Abstract

PURPOSE:To reduce weight, to perform reliable lock, and to prevent losing of the function of a floating body even during breakage of a skin due to collision by a method wherein an insertion hole for a rope for locking is formed in a floating body having an independent foam core made of plastic being covered with a sheet made of plastic. CONSTITUTION:A core 4 formed of an independent foam made of plastic is covered with skins 2 and 3 formed of a sheet made of plastic to form a spherical floating body 10. A rope guide 5 formed with a through-hole through which a rope for locking is inserted is formed in the floating body 10. The skin 2 is a guard sheet made of plastic, e.g. polyethylene, polyvinyl chloride, to form a skin body 21 in a semispherical shape, a pipe 23 extending in the direction of the center of a spherical body is integrally formed at the central part thereof, and a rib 22 having an outer diameter slightly larger than that of the skin is protruded on the peripheral edge part of the skin body 21. A notch 24 is formed in a part in a peripheral direction of the rib 22, and the rib 22 is adhered on the outer surface of other skin 3 resulting from shrinkage during joining of it with the skin 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a floating body used for anchoring fishing nets and the like at predetermined positions on the sea.

(Prior Art) Conventionally, glass spheres or spheres made of vinyl chloride or the like have been used as floating bodies for anchoring fishing nets and the like at predetermined positions on the sea. All of these have spaces inside so that a predetermined buoyancy is generated. A locking portion is formed by covering this sphere with a net, and a fishing net or the like is connected to this locking portion.

(Problem to be Solved by the Invention) The above-mentioned floating body has a thick skin to prevent it from colliding with drifting objects at sea and from being torn during handling, and as a result, the weight is high. The major drawback is that it is inconvenient to handle. Another problem is that if the skin is torn, the ship loses buoyancy and sinks.

[Means for Solving the Problems] This invention provides a floating body in which a core made of a closed plastic foam is covered with a skin made of a thin plastic plate, and a locking rope is inserted through this floating body. A rope guide consisting of a through hole is formed.

The skin may be formed into a spherical shape by joining a pair of hemispherical skins to each other.

A pipe extending toward the center may be integrally formed on the pair of skins, and the rope guide may be formed by joining these pipes to each other.

Further, the floating body may be composed of a polyhedron.

[Function] In the above configuration, sufficient buoyancy is exerted by the core material made of plastic foam material, and the skin can be formed thin because it is reinforced by the core material, thus forming a lightweight floating body as a whole. . Also, shellfish pass through the floating body.
- Since the guide is formed, the floating body can be reliably locked.

〔Example〕

In FIG. 1, a spherical floating body 10 is constructed by covering a core material 4 made of closed foam made of plastic with skins 2 and 3 made of thin plastic plates. A rope guide 5 is formed in this floating body 10 and is formed of a through hole through which a locking rope (not shown) is inserted.

The skins 2 and 3 are constructed as shown in FIG.

That is, the skin 2 is made of a thin plate made of plastic such as polyethylene or vinyl chloride, and the skin main body 21 is formed into a hemispherical shape, and a pipe 23 extending toward the center of the sphere is integrally formed in the center of the skin. A rib 22 having a slightly larger outer diameter is formed protruding from the periphery of 21.

A notch 24 is formed in a part of the rib 22 in the circumferential direction, so that the rib 22 is brought into close contact with the outer surface of the skin 33 by shrinkage when it is joined to the other skin 3. epidermis 2
．． The thickness of 3 varies from 0.5 to 0.5 depending on the size of the floating body 10, etc.
It may be selected within a range of about 1,511.

Similar to the skin 2, the skin 3 is made of a thin plastic plate and has a hemispherical skin body 31, and a vibrator 33 extending toward the center of the sphere is integrally formed in the center thereof. The skin 3 may be manufactured by cutting out the ribs 22 from the skin 2.

The core material 4 is made of a closed foam material made of plastic such as styrofoam or urethane foam and is formed into a sphere with a size corresponding to the inner volume of the skin 2.3, and has a through hole through which the pipe 23.33 passes. I'll let it happen. Heartwood 4
The foaming ratio may be set to about 50f8.

The core material 4 is covered with the skins 2 and 3, and the ribs 22 are overlapped on the outer surface of the periphery of the skin 3, and that portion is bonded by adhesive or high-frequency bonding. At this time, cutout 2
4 to contract the outer diameter of the rib 22 and bring the rib 22 into close contact with the skin 3.

3, 8 Vibe 23 and Nen 4 are together, and both of them are 123
．． 33 forms a rope guide 5 consisting of a through hole. Note that the vibrators 23 and 33 may be connected to each other in a plug-in manner. Alternatively, an adhesive may be applied to the inner surfaces of the skins 2 and 3 to adhere the skins 2 and 3 to the core material 4.

Note that instead of covering the preformed core material 4 with the skin 2.3, the skins 2 and 3 are bonded in advance to form a spherical space inside, and the core material 4 is formed by foaming plastic in this space. may be formed. In this way, the outer circumferential surface of the core material 4 can be brought into close contact with the inner circumferential surface of the skin 2.3 without any gaps.

FIG. 3 shows another embodiment of the present invention, in which the floating body 11 is composed of a pair of skins 6 having a symmetrical shape and a core material 4 filled therein, and the skin 6 is made of a thin plastic plate as described above. The sphere is formed into a hemispherical shape, and a cylindrical protrusion 61 is formed at the center thereof to protrude toward the center of the sphere. The outer skins 6 are brought into contact with each other at their peripheral edges, the inner space of which is filled with a core material 4 made of a plastic foam material, and a rope guide 5 consisting of a through hole with a pipe 62 passed between the protrusions 61. is formed.

In this example as well, the core material 4 may be formed in advance,
Alternatively, the core material 4 may be formed by foaming a foaming material inside the skins 6 after joining them together.

Further, a joining belt 7 is adhered to the joints of the pair of skins 6, thereby sealing the joints 70 of the skins 6. This coupling belt 7 may be made of a thin plastic plate, which may be attached with an adhesive, or may be attached using heat shrink.

In each of the above embodiments, the floating body is formed into a spherical shape, but the shape of the floating body is not limited to this, and various shapes can be adopted. Further, when the floating body is used by being connected to a raft or the like, it is preferable to form the floating body into a polyhedron having a flat portion. The skin may also be colored or patterned depending on the purpose of use. Alternatively, the skin 4 may be made of a transparent material, and the outer surface of the core material 4 may be colored or patterned. In this way, peeling of the pattern, etc. can be prevented.

The floating body 10.11 is usually formed to have a diameter of about 250 to 3000 lIm, but regardless of the size, sufficient buoyancy is exerted by the core material 4, and the skin should be formed thin because it is reinforced by the core material. Therefore, a lightweight floating body is formed as a whole. Furthermore, since the opening guide is formed to pass through the floating body, the floating body can be securely locked.

(Effects of the Invention) As explained above, in this invention, sufficient buoyancy is exerted by the floating body made of plastic foam material, and the plastic skin can be formed thin because it is reinforced by the core material. Therefore, a lightweight floating body is formed as a whole. Furthermore, since the rope guide is formed by passing through the floating body, the floating body can be securely locked. Furthermore, since the skin is formed from a plastic molded product, it is easy to accommodate various shapes and colors. Another advantage is that even if the skin is torn due to a collision with a floating object, it will not lose its buoyancy because the interior is made of closed foam material, and therefore its function as a float will not be lost. be.

[Brief explanation of drawings]

FIG. 1 is a central sectional view showing an actual brittle example of the present invention, FIG. 2 is an exploded sectional view of its skin, and FIG. 3 is a central sectional view showing another embodiment of the invention. 2.3.6... Skin, 4... Core material, 5... Rope guide, 7... Binding belt, 10.11... Floating body.

Claims (1)

[Claims] 1. A floating body is constructed by covering a core made of closed plastic foam with a skin made of a thin plastic plate, and a through-hole through which a locking rope is inserted into the floating body. A floating body for anchoring fishing nets, etc., characterized by having a rope guide formed therein. 2. A locking floating body such as a fishing net according to claim 1, wherein a spherical floating body is constructed by joining a pair of hemispherical skins to each other. 3. The locking device for a fishing net or the like according to claim 2, wherein a pipe extending toward the center is integrally formed on the pair of skins, and a rope guide is formed by joining these pipes to each other. floating body. 4. A floating body for locking a fishing net or the like according to claim 1, wherein the floating body is composed of a polyhedron.