JPH0633103U - Fiber optic cable distribution box - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate connector attachment / detachment and maintenance / inspection of connector connections. Increase the flexibility when installing the wiring box. [Structure] A tray 5 for fusion-splicing core wires of optical fiber cables or optical cords is stacked and arranged in multiple stages on a substrate 3 in a cabinet 1 having upper and lower inlets for optical fiber cables or optical cords, Further, the present invention relates to an optical fiber cable distribution box in which a connector at the other end of an optical cord whose one end is connected to a fusion splicing portion is connected to a connector at one end of another optical cord via connector connecting plates 8 and 9. The connector connecting plates 8 and 9 are held so as to be freely drawn out in a direction substantially perpendicular to the board 3, and the board 3 is formed in the cabinet 1 so that the board 3 can be attached in any desired vertical direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optical fiber cable distribution box for accommodating a fusion splicing portion of an optical fiber cable and a connecting portion by a connector.

[0002]

[Prior art]

 Conventionally, various wiring boxes of this type have been provided for relaying optical fiber cables and for connecting optical fiber cables inside and outside a station. In these wiring boxes, the core wire in the core unit of the optical fiber cable drawn from the outside is fused and connected to one end of the core wire of the optical cord in the fusion tray, and the other end of the optical cord is connected to the outside of the tray. At the same time, connect the connector to one end of another optical cord, and fusion-bond the other end of this optical cord to the core of another optical fiber cable in the tray and pull the optical fiber cable out of the wiring box. Alternatively, the other end of another optical cord connected to the connector is directly drawn out of the wiring box.

[0003]

[Problems to be solved by the device]

 In the conventional wiring box used in this way, the connector connection part of the optical cord is usually fixed and there is only a small space around it, so for example the work of connecting and disconnecting the connector when changing the line connection is performed. There was a problem that the workability of maintenance and maintenance was poor. In addition, since the inlet for the optical fiber cable, etc. to the wiring box is set to either the upper or lower side of the wiring box, the installation position of the wiring box may be restricted or the optical fiber cable etc. There was the inconvenience of having to pull around.

The present invention has been made to solve the above problems, and an object of the present invention is to facilitate the work of connecting a connector of an optical cord and, if necessary, to the optical fiber from either the upper or lower direction. It is to provide an optical fiber cable distribution box that allows cables to be pulled in.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a tray for fusion splicing core wires of an optical fiber cable or optical cord onto a substrate in a cabinet having upper and lower inlets for the optical fiber cable or optical cord. Is a multi-layered optical fiber cable with one end connected to the fusion splicer and the connector on the other end connected to the connector on the other end of the other optical cord via the connector connection plate. In the wiring box, the connector connection plate is drawn out in a direction substantially perpendicular to the board and held by itself, and the board can be mounted in an arbitrary vertical direction in the cabinet.

[0006]

[Action]

 According to the present invention, since the connector connecting plate can be pulled out at a substantially right angle to the substrate, the connector is detached and the maintenance and inspection are performed with the connector connecting plate pulled out. In addition, by replacing the upper and lower sides of the board in the cabinet and mounting them, the optical fiber cable can be pulled in from either the upper or lower direction of the cabinet.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of the inside of the main body, and a cover (not shown) is attached to the main body by a hinge 10 so as to be openable and closable. As shown in FIG. 3, a bushing mounting plate 6 is provided on the upper portion of the cabinet 1, and bushings 2A and 2B are arranged as lead-in ports for inserting an optical fiber cable or an optical cord. Although not shown, the bushing attachment plate 6 can be attached to the lower portion of the cabinet 1 as well, and the optical fiber cable can be pulled in from below the cabinet 1 if necessary.

A substrate 3 is attached inside the cabinet 1. Tension member fixing portions 4A and 4B for fixing the tension member in the optical fiber cable are attached to the substrate 3. A fusion tray 5 for fusion-bonding the core wire of the optical fiber cable and the core wire of the optical cord and accommodating the extra length of the core wire is arranged at substantially the center of the substrate 3. When the structure of the tray 5 is briefly described, as shown in FIG. 4 as a plan view, the core unit of the optical fiber cable or the inlet 51 for the optical cord is provided at the four corners of the substrate 53, and the core wires are It is provided with a plurality of connection part storage walls 52 that store the fusion-bonded connection parts 103 that are fusion-bonded. In the figure, reference numerals 101 and 102 denote core units or optical cords. Further, around the substrate 53, a plurality of side walls 55 and restriction pieces 56 for processing the extra length of the core wire circulated on the substrate are provided.

The tray 5 can be connected to another tray 5 having the same structure by stacking in multiple stages by a detachable pin 54 in a hinge provided on the outside of the introduction port 51. It is configured such that the upper end side or the lower end side of FIG. 4 is opened and closed by removing it. For example, FIG. 2 shows a case where the trays 5 are stacked in four stages, and the upper end side of the bottommost tray 5 is shown. By removing the pin 54, the tray 5 can be rotated 90 ° to open the substrate 53 side, as shown by the broken line in the figure. Therefore, it is possible to perform maintenance and inspection of the fusion splicing part 103 in this state. Further, as shown in FIG. 1, a lid plate 55 is attached to the uppermost tray 5 so that the fusion splicing portion 103 is not exposed.

In FIGS. 1 and 2, connector connection plates 8 and 9 are arranged below the tray 5 on the substrate 3. These connector connection plates 8 and 9 are used to connect the connectors provided at the other ends of the optical cords to each other, as described above.

That is, the connector connecting plates 8 and 9 are provided with a plurality of connector receiving portions 81 and 91 exposed on the front and back surfaces of the plates 82 and 92 as shown in FIG. 2, and via these receiving portions 81 and 91. Connectors (not shown) are connected to each other. The connector connecting plates 8 and 9 can be drawn out along the guides 7a, 7b and 7c provided upright on the substrate 3 substantially at right angles to the substrate 3 as shown by phantom lines in FIG. The stoppers (not shown) provided on the plates 82 and 92 are appropriately brought into contact with the end portions of the guides 7a, 7b, 7c, etc. so as not to fall off. In FIG. 1, reference numerals 11 and 12 are guides for treating an extra length of an optical cord and the like, and 13 is a bolt insertion hole for fixing the substrate 3 to the cabinet 1.

Here, FIG. 5 shows a state of fusion connection and connector connection between core wires in the present embodiment. In this figure, the optical fiber cables C ₁ and C ₂ are drawn into the wiring box and connected to each other via the optical cord. However, by drawing the optical fiber cable and the optical cord into the wiring box. These may be connected in some cases. In FIG. 5, the core wire unit 102 in the optical fiber cable C ₁ is connected to the optical cord 101 in the tray 5 by the fusion splicing portion 103, and the connector 201 provided at the other end of the optical cord 101 is connected to the connector connecting plate 8. It is connected to the connector 202 of the optical cord 104. The optical cord 104 is connected to the core wire unit 105 in the optical fiber cable C ₂ in the tray 5 by the fusion splicing portion 106. In FIG. 5, TM is a tension member.

In FIG. 5, the extra lengths of the core wire units 102 and 105 and the optical cords 101 and 104 are simplified and expressed, and in reality, a large number of core wire units and optical cords are laminated in multiple stages. In addition, they are fusion-spliced in the tray 5 and are also connector-connected by the connector connection plates 8 and 9. When the connectors are to be reconnected by changing the line or the like, the required connector connecting plate 8 or 9 may be pulled out toward the front to secure a sufficient working space, and then the predetermined connector may be attached / detached. Also, the same procedure can be selected when performing maintenance inspection of the connector connection part.

In the above-described embodiment, the case where the optical fiber cable or the like is drawn from above the cabinet 1 has been described, but as described above, the positions of the bushings 2A and 2B are changed, and the upper and lower sides of the substrate 3 are interchanged and fixed. Therefore, the optical fiber cable or the like can be pulled in from below the cabinet 1. As a result, the cable drawing position can be freely selected according to the mounting position of the wiring box or the situation of the optical fiber cable or the like to be drawn inside, and the degree of freedom in use can be greatly increased.

[0015]

[Effect of device]

 As described above, according to the present invention, the connector connecting plate is held so that it can be pulled out in a direction substantially at right angles to the board. It suffices to pull out the connection plate to the front, and thereby a sufficient space can be secured and workability can be improved. In addition, the board can be mounted in any direction up or down in the cabinet, and the optical fiber cable or optical cord can be pulled in from either direction. This eliminates the inconvenience that the installation position of the wiring box is limited and it is not necessary to route the optical fiber cable around the wiring box, so that the wiring box can be installed at a desired position and the cable can be pulled in. Therefore, there is an effect that the degree of freedom in installing the wiring box is significantly improved.

[Brief description of drawings]

FIG. 1 is a front view of the inside of a main body according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a plan view showing the internal structure of the tray.

FIG. 5 is a diagram showing a state of fusion splicing and connector connection in the example.

[Explanation of symbols]

1 Cabinet 2A, 2B Bushing 3 Board 4A, 4B Tension member fixing tool 5 Fusion tray 6 Bushing mounting plate 7a, 7b, 7c Guide 8, 9 Connector connecting plate 81, 91 Connector receiving part 82, 92 Plate C ₁ , C ₂ Optical fiber cable 101,104 Optical cord 102,105 Core wire unit

Claims (1)

[Scope of utility model registration request] 1. A tray for fusing and splicing core wires of optical fiber cables or optical cords is arranged in multiple layers on a substrate in a cabinet having upper and lower inlets for the optical fiber cables or optical cords, and In the optical fiber cable distribution box, the connector at the other end of the optical cord, one end of which is connected to the fusion splicing part, is connected to the connector at the one end of the other optical cord through the connector connection plate, The optical fiber cable distribution box is characterized in that the substrate is held so that it can be pulled out in a direction substantially perpendicular to the substrate, and the substrate can be mounted in an arbitrary vertical direction in the cabinet.