JPH079629Y2 - Barbed wire made of synthetic resin - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is made of a synthetic resin that is lightweight, does not interfere with radio waves, and is excellent in durability, strength, tight retention of a piercing body, and productivity. It is about barbed wire.

[Prior Art] Conventionally, so-called barbed wire has been used for shelves and fences for security, crime prevention, livestock, etc. However, these are heavy and rusty because they are made of metal. It had the drawback of being easy and inferior in durability.

In order to eliminate this drawback of durability, it is also known to coat the core wire of the barbed wire with zinc or coat it with a resin, but such an improved barbed wire is still insufficient in durability, for example, livestock. When it is used as a fence for livestock, it not only damages the livestock that it comes into contact with but also causes radio interference, but also has the problem of poor productivity and high costs.

On the other hand, it has been attempted to change all the materials of the conventional barbed wire from metal to synthetic resin, for example, JP-A-53-58199.
In the official gazette, a barbed resin wire in which a synthetic resin piercing body is adhered and fixed to a synthetic resin single wire or stranded wire is proposed.

[Problems to be solved by the invention] However, in the above-mentioned conventional barbed resin wire, the work of expanding the split portion provided on the stab and inserting and fitting this into a synthetic resin single wire or twisted wire is complicated. Not only is the productivity poor and the cost is high, but the adhesive strength of the sashimi deteriorates over time, and eventually the sashimi is liable to peel or fall off, resulting in durability problems. It had the drawback of not being strong enough.

In addition, by applying a resin wire to the conventional method for producing barbed wire, while twisting two or more resin wires, another resin wire is wound around an appropriate place of the twisted wire, and this is fixedly cut to form a sashimi body. Although a method of forming a can be considered, the barbed wire obtained by this method is
Due to the repulsive force of the resin wire, the stab cannot be tightly wound around the twisted wire, so that there is a problem that the tight retention of the stab is remarkably lacking.

Then, the subject of this invention is solving the problem which the above-mentioned conventional synthetic resin barbed wire has.

Therefore, an object of the present invention is to provide a synthetic resin barbed wire which is lightweight, does not cause radio interference, and is excellent in durability, strength, tight holding property of the piercing body and productivity.

According to the study by the present inventors, it was found that the above objects can be achieved all at once by improving the shape of the synthetic resin stab.

[Means for Solving the Problems] That is, according to the present invention, a synthetic resin barbed in which a plurality of synthetic resin barbs are tightly fitted and fixed to a stranded wire formed by twisting a plurality of synthetic resin monofilaments. The synthetic resin puncture body is a wire formed by integrally molding a plurality of punctures on the periphery of a hollow fitting hole having the same diameter as the stranded wire, and a center fitting hole from a part of the rim. Provided is a synthetic resin barbed wire, which has a notch whose width gradually decreases toward the end and has a plurality of protrusions for pressing the synthetic resin twisted wire on the peripheral surface of the fitting hole. It is a thing.

[Advantage of the Invention] The synthetic resin barbed wire of the present invention is one of the peripheral edges of the synthetic resin piercing body formed by integrally molding a plurality of barbs on the peripheral edge of the hollow fitting hole having the same diameter as the stranded wire. With a notch whose width gradually decreases from the portion to the center fitting hole, a plurality of protrusions for pressing the synthetic resin stranded wire in the fitting hole are provided.
This can be easily inserted into and fitted to the synthetic resin stranded wire through the notch, and in the fitted piercing body, the protrusion not only strongly presses the synthetic resin stranded wire, These protrusions bite into the irregularities on the surface of the twisted wire and hold them tightly together, so that it is difficult for them to come off the twisted wire, and the durability is extremely improved.

[Examples] Hereinafter, examples of the synthetic resin barbed wire of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a front view showing an example of a synthetic resin barbed wire according to the present invention, FIG. 2 is a front view showing a synthetic resin monofilament twisted wire used in the present invention, and FIG. The front view of the synthetic resin stab used, FIG.3 (b) is the same side view.

As shown in FIG. 1, the synthetic resin barbed wire of the present invention is
Twisted wire 2 made by twisting multiple synthetic resin monofilaments
On the other hand, it is configured by tightly fitting and fixing a plurality of synthetic resin puncture bodies 3.

In the present invention, first, a synthetic resin monofilament stranded wire and a synthetic resin piercing body are prepared.

The synthetic resin monofilaments used here include polyamides such as nylon 6, nylon 66, nylon 610, nylon 12 and copolymers thereof, polyethylene terephthalate, polyesters such as polybutylene terephthalate and copolymers thereof, polychlorinated materials. Vinylidene,
Polyvinylidene halide such as polyvinylidene fluoride,
The diameter obtained by melt spinning and drawing a thermoplastic resin such as polyolefin such as polyethylene or polypropylene is
It is a filament that has a fairly high strength and hardness of 0.5 to 5.0 mm.

In addition, these synthetic resin monofilaments may contain usual additives such as colorants, weathering agents, stabilizers, flame retardants, fillers, plasticizers, fluorescent agents and lubricants.

Then, as shown in FIG. 2, the twisted wire 2 is obtained by twisting a plurality of synthetic resin monofilaments 1, for example, 2 to 4, and the twisted wire is manufactured by heating the monofilament to a temperature above its glass transition temperature. It is carried out by a known method such as a method of preheating and mechanically twisting and cooling it.

On the other hand, the piercing body is manufactured by, for example, injection-molding a synthetic resin, and the material thereof is selected from the above-mentioned monofilament materials or a synthetic resin having an affinity with them.

Here, as shown in FIGS. 3 (a) and 3 (b), the synthetic resin piercing body 3 has a plurality of ridges in the periphery of the fitting hole 5 for fitting the stranded wire in the central hollow portion. The barbs 4 are integrally formed.

The number of the pricks 4 of the prickle 3 may be any number of 2 or more, but is usually preferably 3 to 6.

A notch 6 having a width gradually decreasing from a part of the peripheral edge of the stab body 3 to the central fitting hole 5 is provided, and a plurality of protrusions for pressing the stranded wire are provided on the side wall of the fitting hole 5. 7 is provided.

The notch 6 of the stab body 3 has a width that substantially matches the outer diameter dimension of the twisted wire 2 on the peripheral edge side, but is smaller than the outer diameter dimension of the twisted wire 2 on the fitting hole 5 side. The width is gradually reduced to the width, and the inner diameter of the fitting hole 5 is designed to substantially match the outer diameter dimension of the stranded wire 2.

Therefore, when manufacturing the synthetic resin barbed wire of the present invention, the peripheral edge side of the notch 6 may be applied to the stranded wire 2 and strongly pressed into the stranded wire 2, whereby the piercing body 3 is attached to the stranded wire 2. Since it is easily inserted and fitted, the productivity is extremely excellent.

In the synthetic resin barbed wire of the present invention, the fitting hole 5
Since the protruding portion 7 provided on the side wall of the peripheral surface presses the twisted wire 2 and the protruding portion 7 bites into the unevenness on the surface of the twisted wire 2, tight fitting is achieved.

According to the synthetic resin barbed wire of the present invention having such a configuration, the tight retention of the piercing body 3 to the twisted wire 2 is excellent, and the piercing body 3
Is not easily detached from the twisted wire 2, and the stylus 3 does not move in the length direction of the twisted wire 2.
By applying an adhesive agent or applying heat fusion to the fitting portion of the stick body 3, it is possible to further improve the tight holding property.

[Effects of the Invention] As described above in detail, the synthetic resin barbed wire of the present invention is lightweight and does not cause radio interference because it is entirely made of synthetic resin, and has durability and strength. , Excellent retention and productivity of sashimi.

Therefore, the synthetic resin barbed wire of the present invention can be directly attached to a fence or further processed into a woven material to provide a fence or fence for security, crime prevention, livestock, etc., especially at airports or It can be suitably used for these applications in the vicinity such as a harbor where radio interference is likely to occur.

[Brief description of drawings]

FIG. 1 is a front view showing an example of a synthetic resin barbed wire according to the present invention, FIG. 2 is a front view showing a synthetic resin monofilament twisted wire used in the present invention, and FIG. The front view of the synthetic resin stab used, FIG.3 (b) is the same side view. 1 …… Monofilament 2 …… Synthetic resin stranded wire 3 …… Synthetic resin piercing body 4 …… Stab 5 …… Fitting hole 6 …… Notch 7 …… Protrusion

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin barbed wire comprising a plurality of synthetic resin monofilaments tightly fitted and fixed to a stranded wire formed by twisting a plurality of synthetic resin monofilaments. The stab body is formed by integrally forming a plurality of stabs on the peripheral edge of a hollow fitting hole having the same diameter as the stranded wire, and has a notch whose width gradually decreases from a part of the peripheral edge to the central fitting hole. At the same time, the synthetic resin barbed wire has a plurality of protrusions for pressing the synthetic resin twisted wire on the peripheral surface of the fitting hole.