JPH09127343A - Coated optical fiber storage structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it efficient to store and take out the connection part and extra-length part of an overhead coated optical fiber. SOLUTION: This structure is provided with a coated optical fiber connection part storage case 5, a coated optical fiber extra-length storage plate 6, and plural coated optical fiber guides 21-24 which are in a flat cylindrical shape having an external diameter larger than the permissible minimum curvature of winding of a coated optical fiber 11 and equipped with plural jump-out preventive claws 27 for preventing wound coated optical fibers 11 from jumping out at the cylindrical shape peak parts, and provided on the coated optical fiber extra-length storage plate 6 so that they can move between specific positions on the coated optical fiber extra-length storage plate 6. It is convenient when the coated optical fiber storage plate 6 is equipped with plural guide rail 28 and the coated optical fiber guides 21-24 are movable along the guide rails 28. At least two of the coated optical fiber guides 21-24 are arranged in two arrays on the coated optical fiber extra-length storage plate 6 and the coated optical fiber guides in one array and the other array are preferably different in height.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for accommodating a connecting portion and an extra length portion of an optical fiber core wire used in an aerial optical fiber connection accommodating portion provided for connecting or branching an optical fiber cable on a utility pole. Is related to the structure of.

[0002]

2. Description of the Related Art Conventionally, a method as shown in FIG. 6 has been used for accommodating a connecting portion and an extra length portion of an optical fiber core in an aerial optical fiber connecting / accommodating portion. That is, when the optical fiber core wire 11 of the optical cable 1 and the optical fiber core wire 12 of the optical cable 2 are connected, a connecting portion connecting the connectors 9 to each other.
The winding portion 8 including both 10 and the extra length of the optical fiber core was sandwiched between the storage articles 31 and stored in the storage box 32.

[0003]

In such a conventional method, since the storage box 32 has a limited volume, one storage article 31 stores a plurality of winding portions 8 of optical fiber cores. ing. For this reason, a specific optical fiber core can
When taken out from the optical fiber, the workability is extremely poor because the connecting portion 10 of the optical fiber and the extra length portion are intertwined with other optical fiber core wires.

An object of the present invention is to improve the efficiency of the work of accommodating the connecting portion and the extra length portion of the optical fiber core wire that occurs during the connection work of the optical cable, and to easily take out any optical fiber core wire. An object of the present invention is to provide an optical fiber core wire storage structure that can be used.

[0005]

In order to achieve the above-mentioned object, the optical fiber core wire storage structure of the present invention has an optical fiber core wire connection part storage case, a core wire extra length storage plate, and an optical fiber core wire. A plurality of protrusion-preventing claws that have a flat cylindrical shape with an outer diameter that is equal to or greater than the allowable minimum curvature of the coil and that prevent the coiled optical fiber core wire from protruding And a plurality of core wire guides attached to the core wire extra length storage plate so as to be movable between the positions.

It is preferable that the optical fiber extra length storage plate of the optical fiber optical fiber storage structure of the present invention has a plurality of guide rails, and the core guide can move along the guide rails. Further, in the optical fiber core wire storage structure of the present invention, at least two core wire guides are arranged in two rows on the core wire extra length storage plate, and the core wire guides in one row and the core wires in the other row are arranged. It is convenient if the height of the guide is different.

According to such an optical fiber core wire storage structure of the present invention, the optical fiber core wire connection part storage case and the core extra length storage plate are separately fixed to the housing of the overhead optical fiber connection storage part. By using the same, it is possible to separately store the fiber core wire connection portion and the optical fiber core wire extra length portion, and the conventional winding operation for each optical fiber core wire becomes unnecessary, and further, the optical fiber core The entanglement of extra line length is eliminated.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram for explaining a case where optical fiber core wires of a main optical cable are connected to each other, and FIGS. 2 to 5 explain a case where optical fiber core wires of a main optical cable and optical fiber core wires of a branch optical cable are connected to each other. It is a figure. In the figure, 1 and 2 are the upper main optical cable and the lower main optical cable, and 3 and 4 are the branch optical cables, 11, 12, 13, and
Reference numeral 14 is an optical fiber core of each of the upper main optical cable 1, the lower main optical cable 2, the branch optical cables 3 and 4. Further, 5 is an optical fiber core connecting portion storage case, 6 is an extra core length storing plate, and 10 is an optical fiber connecting portion.

FIG. 1 is a diagram for explaining a case where the core wire of the upper side main optical cable 1 and the core wire of the lower side main optical cable 2 are connected. Optical fiber core wire 11 drawn out from the optical cable 1 and optical fiber core wire 12 drawn out from the optical cable 2
After connecting and, a plurality of optical fiber core wire connection parts 10 are stored in the connection part storage case 5.

On the other hand, the plurality of optical fiber core wires 11 drawn out from the optical cable 1 are bundled and passed under the core wire holding member 25 as needed, and the core wire guide 21 and the core wire guide are provided.
23 and the core wire guide 22 and the core wire guide 24.
To pass between. Next, the bundle of the optical fiber core wires 12 pulled out from the lower main optical cable 2 is passed under the core wire pressing member 26, if necessary, to guide the core wire guide 22 and the core wire guide.
24 between the core wire guide 21 and the core wire guide 23.
And the optical fiber core wire extra length processing is completed.

In this case, the core wire guides 21, 22, 23, 24 are
Two are arranged in each of the upper and lower rows of the figure,
Each has an outer diameter of 6 cm or more, which is the minimum allowable curvature of winding of the optical fiber. Also, the core wire guides 21, 22,
Optical fiber core wire pop-out prevention claws 27 are attached to the tops of 23 and 24 so that the optical fiber core wires guided by the core wire guides 21, 22, 23 and 24 do not pop out to the top. . In this case, if the optical fiber cores 11 and 12 are bundled in an appropriate number, for example, for each core of the same optical fiber tape, handling becomes easy.

It is convenient to provide a plurality of guide rails 28 on the extra core length storage plate 6 so that the core guides 21, 22, 23, 24 can move left and right on the orbits of the guide rails. is there. In this example, the guide rail 28 is a slit provided in the core extra length storage plate 6, and the core guides 21, 22,
The legs of 23 and 24 are slidably inserted in this slit. With such a structure, the core wire guides 21, 22, 23, 24 can move left and right according to the lengths of the optical fiber core wires 11 and 12.

As described above, the core wire guides 21, 2 of this example are used.
Although 2, 23, 24 are arranged in two rows, the upper row and the lower row in the figure, the height is about 1 to 2 cm, and the height is different in each row, and each is left and right along the guide rail. Movement,
Even if the optical fiber core wire pop-out prevention claws 27 of the core wire guides 21, 22, 23, and 24 in each row come to a position where they overlap, they do not collide with each other.

FIG. 2 is a diagram for explaining a case where the core wire of the upper main optical cable 1 and the core wire of the branch optical cable 3 are connected. Optical fiber core wire 11 pulled out from the optical cable 1
After connecting the optical fiber core wire 13 drawn from the optical cable 3 to the optical fiber core wire 13, a plurality of optical fiber core wire connection parts 10 are stored in the connection part storage case 5.

On the other hand, the plurality of optical fiber core wires 11 drawn out from the optical cable 1 are bundled and passed under the core wire holding member 25 as necessary to guide the core wire guides 21 and the core wire guides.
23 and the core wire guide 22 and the core wire guide 24.
To pass between. Next, the bundle of the optical fiber core wires 13 pulled out from the branched optical cable 3 is passed between the core wire guide 21 and the core wire guide 23, and the extra length processing of the optical fiber core wires is completed.

FIG. 3 is a diagram for explaining a case where the core wire of the upper main optical cable 1 and the core wire of the branch optical cable 4 are connected. Optical fiber core wire 11 pulled out from the optical cable 1
After connecting the optical fiber core wire 14 drawn from the optical cable 4 to the optical fiber core wire 14, a plurality of optical fiber core wire connection parts 10 are housed in the connection part housing case 5.

On the other hand, a plurality of optical fiber core wires 11 drawn out from the optical cable 1 are bundled and passed under the core wire holding member 25 as necessary, and the core wire guide 21 and the core wire guide are provided.
23 and the core wire guide 22 and the core wire guide 24.
To pass between. Next, the bundle of optical fiber core wires 14 drawn out from the branched optical cable 4 is passed between the core wire guide 22 and the core wire guide 24, and further passed between the core wire guide 21 and the core wire guide 23. Then, the extra length processing of the optical fiber core is completed.

FIG. 4 shows a case in which the core wire of the upper side main optical cable 1 and the core wire 13 of the branch optical cable 3 are connected, and the case where the excess length of the optical fiber core wire on the side of the upper side main optical cable 1 is short will be described. FIG. After connecting the optical fiber core wire 11 drawn out from the optical cable 1 and the optical fiber core wire 13 drawn out from the optical cable 3, a plurality of optical fiber core wire connection parts 10 are housed in the connection part storage case 5. At this time, the connection part storage case 5 is fixed at a position where the bending of the optical fiber core wire 11 can maintain a predetermined curvature radius. On the other hand, the bundle of the optical fiber core wires 13 pulled out from the branch optical cable 3 is passed between the core wire guide 21 and the core wire guide 23, and the extra length processing of the optical fiber core wires is completed.

FIG. 5 shows a case where the core wire of the upper main optical cable 1 and the core wire 14 of the branch optical cable 4 are connected, and the case where the extra length of the optical fiber core wire on the upper main optical cable 1 side is short will be described. FIG. After connecting the optical fiber core wire 11 drawn out from the optical cable 1 and the optical fiber core wire 14 drawn out from the optical cable 4, a plurality of optical fiber core wire connecting parts 10 are housed in the connection part housing case 5. At this time, the connection part storage case 5 is fixed at a position where the bending of the optical fiber core wire 11 can maintain a predetermined curvature radius. On the other hand, the bundle of the optical fiber core wires 14 drawn out from the branch optical cable 4 is passed between the core wire guide 22 and the core wire guide 24, and the extra length processing of the optical fiber core wires is completed.

[0020]

As described above, according to the present invention,
By separately storing the connecting portion and the extra length portion of the optical fiber core wire, it is not necessary to wind each optical fiber core wire, and the work of storing the optical fiber core wire can be made efficient. Further, according to the present invention, when taking out the optical fiber core wire, there is no entanglement with the connecting portion and the extra length portion of the other optical fiber core wire, and it becomes easy to take in and out the connecting portion of any optical fiber core wire. In addition, the remarkable effect that the efficiency of the operation of storing the extra-length core wire of the optical fiber and taking out the optical fiber core wire is improved.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a case where optical fiber core wires of a main optical cable are connected to each other according to the present invention.

FIG. 2 is a diagram illustrating a case where an optical fiber core wire of a main optical cable and an optical fiber core wire of a branched optical cable are connected to each other according to the present invention.

FIG. 3 is a diagram illustrating a case where an optical fiber core wire of a main optical cable and an optical fiber core wire of a branched optical cable are connected to each other according to the present invention.

FIG. 4 is a diagram illustrating a case where an optical fiber core wire of a main optical cable and an optical fiber core wire of a branched optical cable are connected to each other according to the present invention.

FIG. 5 is a diagram illustrating a case where an optical fiber core wire of a main optical cable and an optical fiber core wire of a branched optical cable are connected to each other according to the present invention.

FIG. 6 is a diagram illustrating a conventional method of connecting optical fiber core wires.

[Explanation of symbols]

 1, 2 Optical cable 3, 4 Branch optical cable 5 Optical fiber core wire connection part storage case 6 Fiber extra length storage plate 8 Winding part 9 Connector 10 Optical fiber core wire connection part 11, 12, 13, 14 Optical fiber core wire 21 , 22, 23, 24 Core wire guide 25, 26 Core wire holding member 27 Optical fiber core wire popping-out preventing means 28 Guide rail 31 Storage article 32 Storage box

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toru Yamaguchi 2-3 Otemachi, Kanazawa, Ishikawa Prefecture Hokuriku Telephone Works Co., Ltd.

Claims (3)

[Claims] 1. An optical fiber optical fiber splicing part storage case, an optical fiber extra length storage plate, and an optical fiber having a flat cylindrical shape with an outer diameter that is equal to or greater than the minimum allowable winding curvature of the optical fiber optical fiber. A plurality of pop-out prevention claws for preventing the core wire from jumping out are provided on the cylindrical top part, and a plurality of core wire guides are provided on the core wire extra length storage plate so as to be movable between predetermined positions on the core wire extra length storage plate. An optical fiber core wire storage structure comprising: 2. The optical fiber core wire according to claim 1, wherein the core extra length storage plate has a plurality of guide rails, and the core wire guide has a structure capable of moving along the guide rails. Storage structure. 3. At least two core wire guides are arranged in two rows on the core wire extra length storage plate, respectively, and the heights of the core wire guides in one row and the core wire guides in the other row are different. The optical fiber core wire storage structure according to claim 1 or 2.