JP3065295U - Optical fiber connection storage tray and optical fiber connection storage unit - Google Patents

Abstract

[57] [Abstract] [Problem] To realize both simplification of wiring work, low cost, high-density wiring, and downsizing of an optical fiber wiring board, dramatically improving the usability of an optical fiber cable wiring board. An optical fiber connection storage tray and an optical fiber connection storage unit are provided. A fusing section and a connector connecting section are both arranged inside an optical fiber connection storage tray. The internal plug of the simple receptacle 8 and the external plug of the optical fiber cord 4 are optical fiber connection receiving trays 7 optically connected by connectors 10 from both inside and outside, and the external plug of the optical fiber cord 4 is attached from the front of the connector 10. To be able to

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 SUMMARY OF THE INVENTION The present invention relates to an optical fiber connection storage tray for wiring connection between an optical fiber cable drawn in from outside the office and an optical fiber cord drawn in from inside the office, and an optical fiber connection storage tray arranged in the optical fiber cable distribution board. The present invention relates to an optical fiber connection storage unit that stores a tray.

[0002]

[Prior art]

 A conventional optical fiber connection storage tray and an optical fiber connection storage unit arranged on an optical fiber distribution board will be briefly described. FIG. 6 is a configuration diagram of a conventional optical fiber distribution board. FIG. 6 (a) is a side view thereof, and FIG. 6 (b) is an inside view thereof. FIG. 7 is a configuration diagram of a conventional fusion tray, and FIG. 8 is a configuration diagram of a conventional connector tray. An inlet 21 is provided on a bottom surface and a flat surface (not shown) of the cabinet 20 of the optical fiber distribution board, and a side surface shown in FIG. 6 (a), and an optical fiber cable 22 is provided from outside the office through a desired inlet. The optical fiber cord 23 is introduced from the inside of the station.

An optical fiber cable 22 is inserted through an inlet 21 of the optical fiber distribution board (the bottom surface on the right side in FIG. 6), and is extended to a fusion unit 24 which is centrally arranged below the cabinet 20. , Are wired to a predetermined fusion tray 24a in the fusion unit 24. As shown in FIG. 7, in the fusion tray 24a, the optical fiber cable 22 is fixed so as to be sandwiched by the clamp portions 24b.

The optical fiber cable 22 contains a plurality of (for example, 12) tape cores 22a coated with a UV resin, and one or two tape cores are contained in one tape core. Is stored. Hereinafter, the two ribbons or the four ribbons are collectively referred to as a tape ribbon.

[0005] From the optical fiber cable 22, a plurality of tape cores 22a are pulled out. The extra length of the pulled-out tape core wire 22a is stored in a winding state in the extra length storage portion 24c which is a storage space. Then, these tape core wires 22a and the optical cord 25 in the cabinet are connected. The in-cabinet optical cord 25 is prepared especially for use in a cabinet.

An optical fiber made of glass is fusion-spliced by hot melt to the end of the tape core wire 22a and the end of the optical cord 25 in the cabinet, and the connection is made by a fusion sleeve 26 made of plastic. The coating is protected. The fusing sleeve 26 is held and fixed by being sandwiched between two protrusions erected on the fusing tray 24a.

The in-cabinet optical cord 25 exits from the fusion tray 24 a, extends to the connector unit 27, and is wired to a predetermined connector tray 27 a in the connector unit 27. As shown in FIG. 8, the tip of the optical cord 25 in the cabinet is attached to a connector 28. The other end of the connector 28 is connected to an optical fiber cord 23 covered with high-tensile fiber vinyl. The optical fiber cord 23 is led out from an inlet (the right side on the right side in FIG. 6) and is extended to various places in the station. The optical fiber cable distributor is configured in this manner.

[0008]

[Problems to be solved by the invention]

 In a conventional optical fiber cable distribution board, as shown in FIG. 6, a fusion unit 24, which is a group of fusion trays 24a, and a connector unit 27, which is a group of connector trays 27a, are arranged vertically. Was. In the fusion tray 24a, the tape cord 22a of the optical fiber cable 22 and the optical cord 25 in the cabinet are arranged in a fusion-spliced state, while in the connector tray 27a, the optical cord 25 in the cabinet and the optical cord 25 in the cabinet are arranged. The connection with the fiber cord 23 can be easily changed by a connector 28.

The fusion splicing operation requires time and labor, and once the fusion splicing is performed, the connection is not changed. Therefore, when the connection is changed, the predetermined connector tray 27a in the connector unit 27 is pulled out and the connection of the connector 28 is changed without touching the fusion unit 24. By thus separating the fusion unit 24 and the connector unit 27, the connection work associated with the wiring change has been facilitated.

However, since it is necessary to wire the in-cabinet optical cord 25 over a long distance from the fusion unit 24 to the connector unit 27, a large amount of in-cabinet optical cord 25 is required, and materials required for the wiring work are required. This has led to increased costs. In addition, the wiring itself from the fusion unit 24 to the connector unit 27 also requires time, resulting in deterioration of workability and increase in labor costs.

Further, it is necessary to secure a space for accommodating the optical cord 25 in the cabinet from the fusion unit 24 to the connector unit 27 and a sufficient space for a worker to perform a wiring operation. -It was difficult to increase the density. Further, since the fusion unit 24 and the connector unit 27 are separated and independent, a space for separately accommodating the fusion unit 24 and the connector unit 27 is required. It was difficult to increase the density.

The present invention has been made to overcome the above-mentioned problems, and has realized both simplification of wiring work, cost reduction, high-density wiring, and downsizing of an optical fiber distribution board. An object of the present invention is to provide an optical fiber connection storage tray and an optical fiber connection storage unit that dramatically improve the usability of a cable distribution board.

[0013]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, an optical fiber connection storage tray according to claim 1 is an optical fiber connection storage tray for connecting and storing an optical fiber cable and an optical fiber cord via a simple receptacle. And an extra length accommodation portion disposed on the tray to accommodate the extra length of the tape core and the simple receptacle pulled out from the optical fiber cable, and the tip of the tape core and one end of the simple receptacle are fused. Protects the spliced sleeves. A fusion sleeve holder is provided on the tray to hold the fusion sleeve, an internal plug attached to the other end of the simple receptacle, and attached to the tip of an external optical fiber cord. And a connection part where the external plug is optically connected from both inside and outside of the tray. Characterized in that mounted in front of the connecting part from.

The optical fiber connection storage tray according to claim 2 is the optical fiber connection storage tray according to claim 1, wherein the front surface of the connection portion is directed obliquely to the insertion / removal direction of the optical fiber connection storage tray. It is characterized in that it is arranged so that

According to a third aspect of the present invention, there is provided an optical fiber connection / accommodating unit including a storage section for stacking and storing the optical fiber connection / accommodating trays according to the first or second aspect in multiple stages. When a plurality of optical fiber connection storage trays are arranged in the storage section, the connection section forms a two-dimensional matrix connection on the front of the optical fiber connection storage unit, and the external plug at the end of the optical fiber cord is externally connected. It is characterized in that it can be mounted on the front of the connection part.

[0016]

[Embodiment of the invention]

 Hereinafter, a first embodiment of the optical fiber connection storage tray and the optical fiber connection storage unit of the present invention will be described with reference to the drawings. FIG. 1 is an external view of an optical fiber distribution box. The optical fiber distribution box houses an optical fiber connection storage tray and an optical fiber connection storage unit.

An inlet 2 is provided on the bottom surface, flat surface, and left and right sides of the cabinet 1, and an optical fiber cable 3 from the outside of the office and an optical fiber cord 4 from the inside of the office through the desired inlet 2. be introduced. In the present embodiment, it is assumed that the optical fiber cable 3 is introduced from the inlet 2 opened to the left as viewed from the bottom, and the optical fiber cord 4 is introduced from the inlet 2 opened to the right as viewed from the bottom. I do.

FIG. 2 is an inside view of the optical fiber distribution box. FIG. 2A is an inside view of the optical fiber distribution box with the cabinet door removed, and FIG. 2B is a sectional view taken along line AA. In the cabinet 1, optical fiber connection / accommodation units 5 having the same shape are accommodated in a state of being stacked in multiple stages (10 stages in FIG. 2). Inside the cabinet 1, a cable fixing rail (not shown) for accommodating and fixing the optical fiber cable 3 and the optical fiber cord 4 is provided, and the plurality of optical fiber cables 3 and the optical fiber cords 4 are arranged. Can be accommodated.

The round guide 6 is a circular or semi-circular guide for wiring the optical fiber cable 3 or the optical fiber cord 4, and the optical fiber cable 3 or the optical fiber cord 4 To reduce bending. The optical fiber cable 3 and the optical fiber cord 4 wired in this manner are extended to the optical fiber connection and accommodation unit 5.

FIG. 3 is an enlarged external view of the optical fiber connection housing tray and the optical fiber connection housing unit. FIG. 3A is a plan view of the optical fiber connection housing unit with the top plate removed, and FIG. (B) is a front view of the optical fiber connection housing unit. The optical fiber connection storage unit 5 is provided with a storage section in which the optical fiber connection storage trays 7 are stored in a stacked state (in FIG. 3B, ten stages). This storage section is configured so that the optical fiber connection storage tray 7 can be pulled out. There are various types of such configurations, and they can be appropriately selected.

A spare tray 7 a is also stored below the bottommost optical fiber connection storage tray 7. The spare tray 7a stores the spare optical fiber cable 3, the optical fiber cord 4, or the extra length before and after the connection. In the present embodiment, one optical fiber connection storage tray 7 and one spare tray 7a constitute one unit. In this optical fiber distribution board, a total of 110 optical fiber connection storage trays 10 of 10 units are installed, thereby increasing the number of optical fibers that can be connected and stored.

The wiring connection of the optical fiber cable 3 and the optical fiber cord 4 in the optical fiber connection storage tray 7 will be described. As shown in FIG. 3A, the optical fiber cable 3 is introduced into the optical fiber connection receiving tray 7, and fixed when clamped by the clamp portion 7b. A plurality of tape cores 3a are pulled out from the optical fiber cable 3, and the extra length is accommodated in a winding state in an extra length accommodation portion 7c which is an accommodation space provided on the optical fiber connection accommodation tray 7.

The distal end of the tape core 3 a is fusion-spliced to one end of a simple receptacle 8 which is an optical code used only in the optical fiber connection storage tray 7. One end of this simple receptacle 8 has two cores and four cores so as to coincide with the number of cores of the tape core wire 3a, and the other end is connected to an internal plug described later, one core at a time. You.

A fusion sleeve 9 is covered so as to cover a fusion splicing portion between the tape core wire 3 a and the simple receptacle 8. The fusion splice is protected from the external environment, reducing the risk of disconnection. These fusion sleeves 9 are held and fixed by a fusion sleeve holding portion 7d. The extra length of the simple receptacle 8 is accommodated in a winding state in the extra length accommodation portion 7c described above, and the other end of the simple receptacle 8 is connected to an internal plug.

The internal plug is formed so that it can be connected to a connector 10 which is a specific example of a connection portion arranged on the optical fiber connection storage tray 7. The connector 10 is configured to connect an internal plug and an external plug described later from both directions, and any type and form may be used as long as the optical fiber is optically connected. In the present embodiment, eight internal / external plugs can be connected to one connector 10. Further, as shown in FIG. 3A, three of these connectors 10 are arranged. The optical fiber connection storage tray 7 has a total of 24 internal and external plugs that can be connected.

An external plug that can be connected by the connector 10 is connected at the tip of the optical fiber cord 4. By connecting the connector 10 and the external plug, the simple receptacle 8 and the optical fiber cord 4 can be optically connected. Can be connected. The optical fiber cords 4 are bundled by the guiding section 7e so as to be bundled, and are led out from the side of the optical fiber connection storage tray 7.

As shown in FIG. 3A, the connector 10 is disposed such that an external plug is inserted and removed from the connector 10 in the pulling-out direction when pulling out the optical fiber connection storage tray 7 from the optical fiber connection storage unit 5. The insertion / removal direction is oblique. The reason for this arrangement is that, when the external plug is pulled out from the connector 10 such that the pull-out direction of the optical fiber connection storage tray 7 and the pull-out direction of the external plug coincide with each other, depending on the position of the worker, the external plug is pulled out of the connector 10 This is because the irradiated coherent laser light may enter the eyes and cause visual impairment.

Therefore, as shown in FIG. 3A, the connector 10 is arranged so that the front surface faces obliquely. Therefore, even if the external plug is pulled out from the connector 10 while standing on the front surface of the cabinet 1, the directivity is remarkably large. It is possible to reduce the possibility that high laser light is directly incident on the eye.

Next, a second embodiment of the optical fiber connection storage tray and the optical fiber connection storage unit of the present invention will be described with reference to the drawings. The optical fiber connection storage tray and the optical fiber distribution box in which the optical fiber connection storage unit is stored are the same as in the first embodiment, and a description thereof will be omitted.

FIG. 4 is an enlarged external view of the optical fiber connection housing tray and the optical fiber connection housing unit. FIG. 4A is a plan view of the optical fiber connection housing unit with the top plate removed, and FIG. (B) is a top view when the optical fiber connection storage tray is also pulled out. 5A and 5B are external views of the optical fiber connection and accommodation unit that accommodates the optical fiber connection and accommodation tray, wherein FIG. 5A is a side view and FIG. 5B is a front view.

The optical fiber connection storage unit 11 stores the optical fiber connection storage trays 12 in a state of being stacked in multiple stages (eight stages in FIG. 5). In this embodiment, eight optical fiber connection storage trays 12 constitute one unit. Although not shown, if ten optical fiber connection housing units 11 are installed in the optical fiber wiring box, a total of 80 optical fiber connection housing trays 12 will be arranged.

In the second embodiment, as shown in FIGS. 4A and 4B, two connectors 13 to which eight internal / external plugs can be connected are arranged, and one optical fiber connection accommodation tray is provided. In 12, a total of 16 internal / external plugs can be connected. Also in this embodiment, as shown in FIG. 4B, the connector 13 is arranged so that the direction in which the external plug is inserted and removed from the connector 13 is oblique with respect to the direction in which the tray is pulled out. To prevent direct viewing.

Although not shown, when the optical fiber connection storage tray 12 is pulled out by the lock mechanism, it may be fixed at a position as shown in FIG. 4B. Such a lock mechanism may be a simple mechanism such that, for example, when the optical fiber connection storage tray 12 is pulled out and comes to the lock position, a convex part (not shown) is fitted into a concave part (not shown) and fixed. By providing such a lock mechanism, only the connector 13 of the optical fiber connection storage tray 12 can be seen by looking from above, and the amount of withdrawal is small. There is no occurrence of a situation in which an excessive bending force is applied to 8 and the fusion spliced part is detached. Further, it is possible to prevent the optical fiber connection storage tray 12 from being pulled out too much.

[0034]

[Effect of the invention]

 As described above, in the conventional optical fiber cable distribution board, the fusion tray and the connector tray, which were separately arranged, are combined into one optical fiber connection storage tray in the present invention. By comparison, the simple receptacle can be made short enough to fit inside the optical fiber connection storage tray, and the material cost required for wiring work can be significantly reduced.

In addition, the wiring work from the fusion tray to the connector tray, which has been conventionally performed, is eliminated, and the wiring from the optical fiber cable to the optical fiber code can be performed on one optical fiber connection storage tray. In addition, workability can be improved by reducing work time. In addition, it is not necessary to secure an accommodation space in the optical fiber distribution board to connect the fusion tray to the connector tray as in the conventional case, and it is possible to reduce the size and density of the optical fiber distribution board.

Further, the optical fiber connection storage tray of the present invention is an optical fiber connection storage tray in which the conventional fusion tray and connector tray are integrated, so that the fusion tray storage mechanism and the connector tray storage as in the conventional case. There is no need to separately design the mechanisms and separately house the fusion tray and the connector tray. This simplifies the storage mechanism for the optical fiber distribution board, and enables high-density storage.

In addition, when the connection between the simple receptacle and the optical fiber cord is changed, the connector tray is not pulled out to change the connector connection of the optical fiber cord as in the conventional case. The connecting parts are arranged on the front surface, and furthermore, the connecting parts are arranged in a two-dimensional dot matrix by being stacked and arranged in multiple stages in the optical fiber connection housing unit. Wiring work can be easily performed simply by replacing the external plug without pulling out the tray.

Further, even when it is necessary to pull out the optical fiber connection storage tray, since the connector is arranged on the front side of the optical fiber connection storage tray, it is possible to reduce the amount of pull out, and there is also a case where the tray is pulled out too much. It avoids and does not apply unnecessary bending force to optical fiber cables and optical fiber cords.

As described above, according to the present invention, it is possible to simplify the wiring work, reduce the cost, increase the wiring density, and reduce the size of the optical fiber wiring board, thereby greatly improving the usability of the optical fiber cable wiring board. An improved optical fiber connection storage tray and an optical fiber connection storage unit can be provided.

[Brief description of the drawings]

FIG. 1 is an external view of an optical fiber distribution box.

FIG. 2 is an inside view of an optical fiber distribution box.

FIG. 3 is an enlarged external view of the optical fiber connection storage tray and the optical fiber connection storage unit of the first embodiment of the present invention.

FIG. 4 is an enlarged external view of an optical fiber connection storage tray and an optical fiber connection storage unit according to a second embodiment of the present invention.

FIG. 5 is an external view of an optical fiber connection accommodating unit accommodating the optical fiber connection accommodating tray according to the second embodiment of the present invention.

FIG. 6 is a configuration diagram of a conventional optical fiber distribution board.

FIG. 7 is a configuration diagram of a conventional fusion tray.

FIG. 8 is a configuration diagram of a conventional connector tray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabinet 2 Inlet 3 Optical fiber cable 3a Tape core wire 4 Optical fiber cord 5 Optical fiber connection accommodation unit 6 Round guide 7 Optical fiber connection accommodation tray 7a Spare tray 7b Clamp part 7c Extra length accommodation part 7d Fusion sleeve holding part 7e Guide unit 8 Simple receptacle 9 Fusion sleeve 10 Connector 11 Optical fiber connection housing unit 12 Optical fiber connection housing tray 13 Connector

Claims (3)

[Utility model registration claims] 1. An optical fiber connection receiving tray for wiring and storing an optical fiber cable and an optical fiber cord via a simple receptacle, comprising: a tray; a tape core drawn out from the optical fiber cable; and an extra length of the simple receptacle. The extra length storage portion disposed on the tray so as to receive the tape, and the fusion sleeve protecting the connection portion where the end of the tape core wire and one end of the simple receptacle are fused is held on the tray. A connection part where the fusion-sleeve holding part to be provided, an internal plug attached to the other end of the simple receptacle, and an external plug attached to the tip of an external optical fiber cord are optically connected from both inside and outside of the tray. An optical fiber connection characterized in that an external plug at the end of the optical fiber cord can be attached from the outside to the front of the connection part. Storage tray. 2. The optical fiber connection housing according to claim 1, wherein the front surface of the connection portion is disposed so as to be inclined with respect to the insertion / removal direction of the optical fiber connection housing tray. tray. 3. An optical fiber connection storage unit having a storage section for storing and stacking the optical fiber connection storage trays according to claim 1 in multiple stages, wherein the storage section has a plurality of optical fiber connection storage trays. When arranged, the connection portion forms a two-dimensional matrix connection portion on the front surface of the optical fiber connection housing unit, and an external plug at the tip of the optical fiber cord can be attached from the outside on the front surface of the connection portion. Optical fiber connection and accommodation unit.