JP2008061385A - Cable protection tube - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable protection tube which is not bulky, can be easily carried to a site, can be easily attached to even a curved part at the site, and precisely discriminates a cable at the inspection and maintenance of the cable. <P>SOLUTION: A tape-like raw material are overlapped with each other in its side edges; and the cable protection tube is composed of a cylindrical inner tube formed by welding or adhering the overlapped potions, and a hard protecting core material which is fixed to the outer periphery of the inner tube while being spirally wound around the outer periphery. An animal repellent is applied at least on the outer peripheral face of the cylindrical inner tube, and one streak of an attachment notch is formed at the outer periphery of the protection tube. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cable protection tube for preventing a wire cable or an optical fiber cable from being broken or damaged by an animal being hit or by insects or the like.

In general, electric cables and optical cables for communication are installed on pillars such as roads and natural parks, and multiple electric cables and optical cables for communication are supported on these pillars, or electric cables and optical cables for communication ( (Hereinafter simply referred to as cables).
In a cable supported by a column, a crow or the like may bite this cable, or in a cable near the trees of the park, a rodent such as a squirrel may bite and damage the cable through a wire from the treetop. .
Further, as shown in FIG. 7, an insect such as a bear swallow may mistake the branch to pierce the egg-laying tube 100 into the cable 104 and damage the cable 104, particularly the optical cable 108.

On the other hand, in a cable arranged in a culvert, a mouse or the like that lives in such a culvert has a problem that the cable is damaged or disconnected as described above.
Therefore, in order to cope with such a problem, a tubular member that is fitted to the outer periphery of the cable is provided, and the rod member is not broken even if the rodent animal crawls on the entire inner peripheral surface of the tube main body of the tubular member. A cable protection tube that has a certain degree of hardness and is provided with a damage prevention quality layer that can be opened and closed at a divided portion on one side thereof has been proposed previously. (Patent Document 1)

However, the cable protection tube according to the previous proposal is straight and has a hardness that will not be broken even if a rodent crawls. There was a problem that it was not possible to obtain a good effect.
Furthermore, since it is hard and linearly formed, not only is it bulky at the time of transportation and the transportation cost becomes high, but also there is a problem that the construction cost becomes high because it takes time and effort at the time of mounting.

In addition, because many cables of different types are arranged together in the column and underdrain, it is difficult to distinguish the cables when the cable protection tube according to the previous proposal is installed, which makes it difficult to check and repair cables. There was also a problem that it took time and effort.
In addition, since tubes containing animal repellents such as capsaicin are exposed and easy to touch the hands and skin of workers, it is difficult to increase the mixing ratio of such animal repellents, which is why animal repellent effects May not be able to be fully demonstrated.
JP 2003-143744 A

  The present invention has been proposed in view of the above-mentioned problems, is not bulky, can be easily transported to the site, can be easily mounted even on a curved portion and can be safely mounted, and when checking and repairing cables. It is an object of the present invention to provide a cable protection tube that can distinguish cables.

  In order to achieve the above object, a cable protection tube according to the present invention is a cable protection tube that is used by being attached to the outer periphery of a cable when the cable is installed or installed in a culvert. A cable protection tube is a cylindrical inner tube formed by winding a tape-shaped material in a spiral shape with at least side edges overlapping each other, and welding or bonding the overlapping portions, and a spiral on the outer periphery of the inner tube. It is composed of a hard protective core material that is fixed in a state of being wound in a shape, and is provided with animal repellent on at least the outer peripheral surface of the cylindrical inner tube, and a single incision is formed on the outer periphery of the protective tube This is the main feature.

Further, the cable protection tube according to the present invention includes kneading an animal repellent in the raw material forming the tape-shaped material forming the inner tube, the animal repellent is capsaicin, and the core material and the inner tube. The color of the core material, or the color of the core material and the color of the inner tube are combined to display the type of cable to be protected or the type of repellent. .

According to the cable protection tube of the present invention, the cable protection tube is formed by winding a protective core material around the inner tube formed in a cylindrical shape with a tape-like material and the outer periphery thereof. The cable protection tube is flexible and can be wound around a reel or transported in an annular bundle.
Thereby, it does not become bulky, can be easily transported to the site, and can be easily handled even at the site.
In particular, since the cable protection tube has flexibility, there is also an advantage that it can be easily attached even at a curved portion of the cable.

  Furthermore, since it can be wound on a reel or transported as an annular bundle as it is long, in such a case, it can be used by cutting according to the length of the cable to be installed, and it is economical and economical. It is also possible to reduce the construction cost.

In addition, since the protective core material is spirally wound around the outer periphery of the inner tube provided with animal repellent on at least the outer peripheral surface, the operator's hand and skin are directly on the animal repellent material on the outer peripheral surface of the inner tube. The protective core that protrudes from the touch is prevented as much as possible.
Accordingly, there is an advantage that safety can be maintained even when the mixing ratio of the animal repellent is increased and the animal's repellent effect can be sufficiently exhibited.

  Also, the core material and inner tube are displayed in different colors, and the type of cable to be protected or the type of repellent is displayed by combining the color of the core material, or the color of the core material and the color of the inner tube. Then, since the cables can be discriminated just by glance at the inspection and maintenance of the cable, there is an advantage that the erroneous maintenance can be eliminated and the inspection and maintenance can be performed easily and in a short time.

Hereinafter, the most preferred embodiment of a cable protection tube according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a state in which a cable protection tube of the present invention is attached to a cable supported by a support column. Reference numeral 1 in the drawing denotes a cable protection tube.
The cable protection tube 1 is used by being attached to a cable 4 supported on a portion near an upper end of a support 2 via a support fitting 3 or a branch cable 4 branched from a branching tool 5 to each home.
As shown in FIGS. 2 to 4, the cable 4 is formed by placing copper wires 6, reinforcing fibers 7, and optical cables 8 in a horizontal row at a predetermined interval and molding with a synthetic resin 9. It has a well-known structure.

The cable protection tube 1 attached to the cable 4 includes a cylindrical inner tube 10 and a protective core 11 provided on the outer peripheral portion of the inner tube 10. A mounting notch 12 is formed.
The cylindrical inner tube 10 is a material in which capsaicin is mixed with a raw material made of a soft synthetic resin such as vinyl chloride or vinyl acetate at a ratio of about 2% by weight with respect to the resin raw material. At a high temperature in a state where the tape 10a is softened, the cylindrical inner tube 10 is melted by winding the rotating core member for molding (not shown) in a state where the one side edge portion overlaps and the overlapping portion is melted. They are formed (see FIG. 5).
Here, in order to protect the inner tube 10 and capsaicin mixed therein from ultraviolet rays and enhance durability, the inner tube 10 is desirably black.

The protective core 11 is formed simultaneously with the formation of the inner tube 10.
That is, as shown in FIG. 5, the protective core 11 is formed by combining a tape-like material 11a having a narrower width and a larger thickness than the tape 10a forming the inner tube 10 with the tape 10a forming the inner tube 10 being overlapped. The outer side of the inner tube 10 is welded and fixed by spirally winding it around the side edge portion in a hot state.
In addition, a colorant is kneaded with the protective core material 11 and the color thereof is different from that of the inner tube 10, for example, red, and the type of the cable 4 to which the cable protection tube 1 is attached is different. An optical cable is displayed.

After the protective core material 11 is spirally attached to the outer peripheral portion of the inner tube 10, a single notch 12 is cut across the inner tube 10 and the protective core material 11 as shown in FIG. When the opening means (not shown) is formed in the longitudinal direction of the inner tube 10, the cable protection tube 1 is formed. The cable protection tube 1 is stored in a long length by being wound on a reel or the like, or in an annular bundle or a bundle having a predetermined length.
In addition, the notch 12 formed over the inner tube 10 and the protective core material 11 may be formed with a cutter or scissors on site.

The cable protection tube 1 formed as described above is transported to the site in a state of being wound around a reel or the like, or in an annular bundle, or bundled in a predetermined length.
At the site, the cable protection tube 1 is cut to a required length, the cut 12 is opened as shown in FIG. 2, and the cable protection tube 1 is fitted into the cable 8 from the opening 13 by a simple operation. The mounting of the cable protection tube 1 to the cable 8 is completed.
When the cable protection tube 1 is fitted to the cable 8, the protective core 11 protrudes from the outer peripheral surface of the inner tube 10 where the capsaicin of the cable protection tube 1 is kneaded. Even if it contacts the protective tube 1, the protective core 11 prevents the worker's skin from directly touching the surface of the inner tube 10 as much as possible.

Thus, the cable 4 to which the cable protection tube 1 is fitted can be easily used by simply looking at the color of the protective core material 11 spirally attached to the outer peripheral portion of the inner tube 10 of the cable protection tube 1. Can be discriminated accurately.
Then, when a crow or the like caught in the cable protection tube 1 tries to crawl this cable protection tube, it touches the capsaicin kneaded in the inner tube 10 and is so numb that it has a learning ability like a crow. The cable protection tube 1 of this form does not approach the cable protection tube 1.

In the above embodiment, the color of the inner tube 10 is black and the protective core 11 is red. However, the present invention is not limited to this, and when stimulating substances such as hot pepper are used as a repellent instead of capsaicin. The color of the inner tube or the protective core 11 can be yellow or other colors, the type of repellent is the color of the inner tube 10, and the type of cable 4 is the color of the protective core 11. Alternatively, the color of the inner tube 10 indicates the type of the cable 4 and the color of the protective core 11 indicates the type of repellent.
Furthermore, it goes without saying that the raw material types of the inner tube 10 and the protective core material 11 of the cable protection tube 1 are not limited to vinyl acetate and vinyl chloride, and other synthetic resins can be used.
In addition, in the above embodiment, capsaicin is kneaded with the raw material of the inner tube 10, but it is also possible to provide an animal repellent such as capsaicin on the surface of the inner tube 10 by coating.

These are the perspective views of the use condition of the cable protection tube concerning this invention. These are perspective views which show the attachment process of the cable protection tube concerning this invention. These are the longitudinal cross-sectional front views of the use condition of the cable protection tube concerning this invention. These are the longitudinal cross-sectional side views of the use condition of the cable protection tube concerning this invention. These are perspective views which show the manufacture procedure of the cable protection tube concerning this invention. FIG. 3 is a perspective view of a cable protection tube according to the present invention. FIG. 3 is a cross-sectional view of a cable showing damage caused by insertion of a seminiferous oviduct.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Cable protective tube 4 ... Cable 10 ... Inner tube 11 ... Core material for protection 12 ... Cut

Claims (4)

  An existing cable or a cable protection tube that is used by being attached to the outer periphery of a cable when it is installed or buried, and this cable protection tube is spiral with tape-shaped material overlapping at least at the side edges A cylindrical inner tube formed by welding or adhering the overlapping portions, and a hard protective core member fixed in a spirally wound state on the outer periphery of the inner tube. A cable protective tube characterized in that an animal repellent is provided on at least the outer peripheral surface of the inner tube, and a single incision is formed on the outer periphery of the protective tube.   The cable protective tube according to claim 1, wherein an animal repellent is kneaded into a raw material forming a tape-shaped material forming the inner tube.   The cable protection tube according to claim 1 or 2, wherein the animal repellent is capsaicin.   The core material and inner tube are made different colors, and the color of the core material, or the color of the core material and the color of the inner tube are combined to hold the type of cable to be protected or the type of repellent. The cable protection tube according to claim 1, wherein

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