KR910005828Y1 - Connecting system for the optical fiber cable - Google Patents

Abstract

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Description

Fiber optic cable connector

1a or a sleeve front view, b is a right side view of the sleeve.

2a is a plan view of the shelf for connection, b is a front view of the shelf for connection.

Figure 3a is an enlarged front view of the connecting portion of the connection receiving shelf, b is a right side view of the connection receiving shelf.

4 is a front view of the connection receiving shelf unit.

5 is a cross sectional view of a sleeve in which a connection unit is installed.

6 to 8 are internal plan views of the connecting device for explaining the action.

9 is an installation state of the connecting device.

* Explanation of symbols for main parts of the drawings

1: Sleeve 1A, 1B: Upper and lower cover

4: Connection receiving shelf 5: Pin

7: fusion splicing part 17: connection receiving shelf unit

41: substrate 42, 43: core unit introduction

44: connection part accommodating part 45, 45A, 45B: connection part

46: core guide C: optical fiber cable

C ₁ : tension member C ₂ : core unit

C ₃ : core wire

The present invention relates to an optical fiber cable connecting device for accommodating a fusion splicing portion in which the optical fiber cable core wires are fusion-spliced to each other.

In the case of installing a conventional copper cable for communication, the copper cables are connected to each other according to their lengths, and the copper cables are connected to each other. Connect.

In this way, when the cables are connected to each other, the cable core wires are connected to the terminal portion of the cut coating of the cable core wire of the copper cable, and these connections are usually contained in a sleeve-type connecting device made of metal or plastic.

And this connecting device is generally supported by hangers, etc. hanging on the main wire for the whole week where the cable was laid.

On the other hand, in recent years, fiber optic cables have been produced in place of communication copper cables, which have advantages such as a large amount of transmission information and a low transmission loss and no flow disturbance.

This fiber optic cable is usually 500-1000m in length, and in the case of a long distance installation of the fiber optic cable, it is necessary to have a large number of connection devices and to accommodate the fiber optic cable connections therein.

In the case of connecting optical fiber cables, a special fusion device is used for fusion connection between core wire cross-sections, and inside the core wire of the optical fiber cable, light is totally reflected while proceeding with total reflection. Requires attention.

In the fusion splicing work, the fiber optic cable was generally introduced into the splice device installed near the pole.

However, the conventional optical fiber cable connecting device is a structure in which the cable end is pulled into the casing on the sleeve to perform a fusion splicing operation, and in particular, when the mounting position of the connecting device is high, the footrest is not comfortable. Fusion splicing was very difficult. At the same time, it is inconvenient to check and maintain the fusion splicing, and this problem becomes more remarkable since the number of fusion splicing increases as the fiber optic cable is multi-cored.

In addition, in the conventional connection apparatus, when the number of core wire units of the optical fiber cable changes due to the change in the number of lines, there is a problem that all core wire units cannot be accommodated or the core wire units can not be neatly accommodated.

The present invention is to solve this problem, and its purpose is to receive a plurality of connection receiving shelves to be detached in a sleeve to accommodate the fusion splicing part of the optical fiber cable core, and to separate the connection receiving shelf and the sleeve to be fused. It is to provide an optical fiber cable connection device that facilitates the connection work and maintenance inspection work and easily copes with changing the number of lines to be accommodated.

In order to achieve the above object, the present invention draws a plurality of core wire units of an optical fiber cable onto a substrate, and turns the core wires in the core wire unit in the core wire unit having a sufficient length by circulating the substrate. A fusion-welding shelf having a splice receiving portion for fusion splicing to be fusion-spliced, and a sleeve for detachably accommodating the splicing-receiving shelf, and an electrical connection accommodating shelf are configured to be linked in multiple stages via a connection portion formed in the splice-holding shelf. Characterized in that it is.

According to the present invention, a plurality of core wires of the optical fiber cable are circulated so as to have a sufficient length in the connection receiving shelf, and are fusion-spliced to each other at the end face thereof, and the fusion splicing portion is accommodated in the connection portion accommodating portion.

In addition, this connection receiving shelf is formed to be connected in multiple stages, and can be freely reduced depending on the number of circuits of the optical fiber cable, that is, the core bow to be connected. Since the connection receiving shelf is removably housed in the sleeve, the fusion splicing operation of the core wire and the maintenance inspection of the fusion splicing portion can be performed with the connection receiving shelf removed from the sleeve.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

First, Figure 1 is an appearance of a sleeve that is a component of the connecting device according to the present invention.

1 is a sleeve made of plastic upper and lower covers 1A and 1B formed in a substantially semi-cylindrical shape, and upper and lower covers 1A and 1B are fastened to the band 2 in a state where the upper and lower covers 1A and 1B are separated and joined together.

In addition, two cable entry holes 3 for introducing the multi-core optical fiber cable C are provided at both ends of the sleeve 1, respectively.

2 and 3 are connection receiving shelves 4 to be accommodated in the sleeve 1.

The connection receiving shelf 4 is made of plastic, and the core wire unit introduction portions 42 and 43 to which the core wire unit of the optical fiber cable C are introduced are provided near both ends of the flat substrate 41 side.

In the center part of the board | substrate, there exists the connection part accommodating part 44 in which the fusion spliced part of an optical fiber cable C core wire is accommodated, and the core wire guide 46 is provided in the periphery of the board | substrate 41 at appropriate intervals.

Moreover, the connection part 45 is provided in the both ends of the inner side edge part and the board | substrate 41 opposite side edge part rather than the electric core wire unit introduction part 42 and 43, respectively.

These connecting portions 45 are composed of an upper connecting piece 45A and a lower connecting piece 45B, which are formed in a semicircular shape as viewed in detail from the side as shown in detail in FIG. The pin 5 was inserted between the connecting pieces 45A and 45B so that the plurality of connection receiving shelves 4 could be piled up in any number.

In addition, the plurality of connection receiving shelves 4 stacked in this manner are connected to the uppermost connection receiving shelves 4 by a connecting part 45 and pins 5 at the entrance portions 42 and 43, and a flat lid (not shown). It was made to be connected so that opening and closing was possible.

A plurality of nested connection receiving shelves 4 are attached to the pedestal 160 and attached to the pedestal 16 as shown in Fig. 4, and the insulating plate 11 disposed at both ends of the pedestal 16 is shown in Fig. A support piece 15 for the tension member fixture 14 to fix the tension member C ₁ for reinforcement installed in the optical fiber cable C is attached as shown in the figure. The insulating plate 11, the respective fixtures 12 and 14, and the support pieces 13 and 15 constitute an integrated connection receiving shelf unit 17 in the same state as in Fig. 4, and the connection receiving shelf unit ( 17 is removably received in the sleeve 1 as in FIG.

18 and 5 are caps attached to the uppermost connection receiving shelf 4. Next, the operation of this embodiment will be described with reference to FIGS.

First, remove the upper cover 1A constituting the sleeve 1 or the lower cover 1B as necessary and insert the rubber bush 6 to insert the multi-core optical fiber cable C inside the connection receiving shelf unit 17, respectively. Pull in.

The optical fiber cable C is fixed by the cable fastener 12 and the tension member C ₁ is fixed by the tension member fastener 14.

The core wire unit C _{2 in the} optical fiber cable C is led on the substrate 41 of the connection receiving shelf 4 at the core wire unit introduction portions 42 and 43, respectively, as shown in FIG. 6 and FIG. The core wire C ₃ in the core wire unit C ₂ is wound around the substrate 41 via a plurality of core wire guides 46 provided around the substrate 41, and then the substrates 41 at the left and right sides of the connecting portion accommodating portion 44, respectively. ), It rotates and reaches the connection part accommodating part 44.

The cross sections of each core wire C ₃ are fused and connected to each other with their centers as one center, and a fusion spliced portion 7 having a protective cover attached thereto is housed in the splice accommodation portion 44 as shown in FIG.

The substrate 41 is formed sufficiently large, and as described above, the core wire C ₃ is circumscribed on the substrate 41 and the length thereof is sufficiently long so that the fusion splicing portion 7 is formed along the length of the core wire C ₃ . Is accommodated in the plurality of connection portion receiving portions 44 as indicated by the dotted lines. Also, since the length of the wire sufficiently, for example the core wire If the fusion splicing of the (C ₃₎ is incomplete, the core wire (C ₃₎ when re-fused by cutting the end portions so change the position of the fusion-spliced portion 7 in the connection portion 44 Rectangles can be positioned as dotted lines.

Although not shown, the other core wire unit C _{2 in the} optical fiber cable C is similarly drawn in and wound around the substrate 41 of the other connection receiving shelf 4, and the core wire C _{3 end} face is fusion-spliced. One fusion spliced portion 7 is accommodated in a proper position of the splice portion 44.

As described above, in the present embodiment, a predetermined fusion splicing operation may be performed on the connection receiving shelf unit 17 that is detachable with respect to the sleeve 1 of the upper and lower carvers 1A and 1B, and the maintenance inspection of the fusion splicing portion 7 is performed. Since the connection receiving shelf unit 17 can also be removed, the fusion splicing work and the maintenance inspection work can be easily performed regardless of the installation place of the connecting device.

When the number of core wire units (C ₂ ) to be connected in the connection receiving device increases or decreases as the number of circuits of the optical fiber cable (C) changes, the connection receiving shelf 4 can cope with this. The cutting operation of (4) may also be applied to the connecting unit shelf unit 17 from which the sleeve 1 is removed.

The connecting device configured as described above is provided as shown in FIG.

That is, in the figure, (a) is a connection device according to the present proposal, and this connection device (a) is suspended around the main wire (d) near the pole (b) or stored in the manhole (e) near the pole (b).

And (f) is underground passage.

As described above, according to the present invention, since the connection receiving shelf is configured to be detachably attached to the sleeve, the connection receiving shelf can be detached into a free space, and fusion splicing work or maintenance inspection work can be carried out, regardless of the installation place of the connecting device. Workability can be improved.

In addition, since the connection receiving shelf is easy to reduce the mid-range, it is possible to easily cope with the increase and decrease of the number of lines of the optical fiber cable.

Claims (1)

A connection accommodating shelf having a plurality of connection accommodating portions for accommodating a plurality of core wire units of an optical fiber cable into the substrate, and for fusion splicing the core wires in the core wire unit having a sufficient length by circulating the engine image; And a sleeve in which the connection receiving shelf is detachably accommodated, and the connection receiving shelf is configured to connect in multiple stages through a connection portion formed in the connection receiving shelf.