JP2584989Y2 - Fiber optic cable distribution box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber cable distribution box for accommodating a fusion spliced portion of an optical fiber cable and a connector.

[0002]

2. Description of the Related Art Conventionally, various types of wiring boxes of this type have been provided for relaying optical fiber cables and connecting optical fiber cables inside and outside the office. In these wiring boxes, the core wire in the core unit of the optical fiber cable drawn in from the outside is fusion-spliced 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 another outside the tray. A connector is connected to one end of the optical cord, and the other end of the optical cord is fusion-spliced to the core wire of another optical fiber cable in the tray and the optical fiber cable is pulled out of the wiring box, or The other end of another connected optical cord is directly drawn out of the wiring box.

[0003]

In the conventional wiring box used as described above, the connector connecting portion of the optical cord is usually used.
Since it is fixed and there is only a small space around it, there has been a problem that, for example, the work of attaching / detaching a connector and performing maintenance and inspection when replacing a line is poor. In addition, since the entrance of the optical fiber cable or the like to the wiring box is determined at one of the upper and lower sides of the wiring box,
Depending on the situation, there are inconveniences that the installation position of the wiring box is restricted and that an optical fiber cable or the like must be routed around the wiring box.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. It is an object of the present invention to facilitate the work of connecting an optical cord to a connector and, if necessary, to make an optical fiber from either the upper or lower direction. An object of the present invention is to provide an optical fiber cable distribution box into which cables and the like can be drawn.

[0005]

In order to achieve the above object, the present invention provides an optical fiber cable or a core of an optical cord or the like on a substrate in a cabinet having upper and lower entrances for the optical fiber cable or the optical cord. The trays for fusion splicing are stacked in multiple stages, and one end of the optical cord whose one end is connected to the fusion splicing part is connected to a connector at one end of another optical cord via a connector connection plate. In the optical fiber cable distribution box, the connector connection plate is held so as to be able to be pulled out in a direction substantially perpendicular to the substrate, and the substrate can be mounted in any direction up and down in the cabinet. Things.

[0006]

According to the present invention, since the connector connecting plate can be pulled out substantially at right angles to the substrate, the detachment of the connector, maintenance and inspection, and the like are performed while the connector connecting plate is pulled out. Also,
By mounting the substrate upside down in the cabinet, the optical fiber cable can be drawn in from either the upper or lower direction of the cabinet.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 so as to be openable and closable by a hinge 10. As shown in FIG. 3, a bushing mounting plate 6 is provided at an upper portion of the cabinet 1, and bushings 2A and 2B are arranged as a drawing port through which an optical fiber cable or an optical cord is inserted. Although not shown, the bushing attachment plate 6 can also be attached to the lower part of the cabinet 1, and an optical fiber cable can be drawn in from below the cabinet 1 as needed.

A board 3 is mounted inside the cabinet 1. The substrate 3 has tension member fixing portions 4A and 4B for fixing tension members in the optical fiber cable. At the substantially center of the substrate 3, a fusion tray 5 for fusion-splicing the core wire of the optical fiber cable and the core wire of the optical cord, and accommodating the extra length thereof is arranged. Briefly describing the structure of the tray 5, as shown in a plan view in FIG. 4, the core unit of the optical fiber cable or the inlet 51 of the optical cord is provided at the four corners of the substrate 53.
And a plurality of connecting portion storage walls 52 for storing a fusion splicing portion 103 in which these core wires are fusion spliced. In the drawings, reference numerals 101 and 102 denote a core unit or an optical cord. Further, around the substrate 53, a side wall 55 for processing an extra length of a core wire orbiting around the substrate is provided.
And a plurality of regulating pieces 56 are provided.

The tray 5 can be connected to another tray 5 having the same structure in a multi-tiered manner by a detachable pin 54 in a hinge provided outside the introduction port 51, and the pin 54 is removed. Thus, the upper end or lower end of FIG. 4 is configured to open and close. For example, FIG. 2 shows a case where the trays 5 are stacked in four layers, and the upper end of the lowermost tray 5 is shown. By removing the pins 54, the tray 5 can be rotated 90 ° as shown by the broken line in the figure to open the substrate 53 side. Accordingly, maintenance and inspection of the fusion splicing part 103 can be performed 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 FIG. 1 and FIG. 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, as described above,
It is used to connect connectors provided at the other end of the optical cord to each other.

That is, the connector connecting plates 8 and 9 are
As shown in the figure, a plurality of connector receiving portions 81, 91 are provided on the front and back of the plates 82, 92, and connectors (not shown) are mutually connected via these receiving portions 81, 91. . And the connector connection plates 8 and 9
Can be pulled out substantially at right angles to the substrate 3 along guides 7a, 7b, 7c erected on the substrate 3 as shown by imaginary lines in FIG. Guides 7a, 7b, 7
Care is taken to ensure that they do not fall off by appropriately contacting the ends of the members c and the like. In FIG. 1, reference numerals 11 and 12 denote guides for processing an excess length of an optical cord or the like, and reference numeral 13 denotes a bolt insertion hole for fixing the substrate 3 to the cabinet 1.

FIG. 5 shows the state of fusion splicing of core wires and connection of connectors in this embodiment. This figure shows a case in which the optical fiber cables C ₁ and C ₂ are drawn into the wiring box and they are connected via an optical cord. However, the optical fiber cable and the optical cord are drawn into the wiring box and these are connected. Sometimes it connects. 5, the core wire unit 10 of the optical fiber cable C ₁
2 is connected to the optical cord 101 in the tray 5 by the fusion splicing part 103, and the connector 201 provided at the other end of the optical cord 101 is connected to the optical cord 104 on the connector connecting plate 8.
Connector 202 is connected. The optical code 104 is connected by a core unit 105 and the fusion splicing portion 106 in the optical fiber cable C ₂ in the tray 5. In FIG. 5, TM is a tension member.

In FIG. 5, the core units 102, 10
5 and the extra lengths of the optical cords 101 and 104 are represented in a simplified manner, and in fact, a large number of core units and optical cords are fusion-spliced in a multi-tiered tray 5 and a connector is provided. The connectors are connected by connecting plates 8 and 9. If the connectors are to be reconnected by changing the line or the like, the required connector connection plate 8 is required.
Alternatively, a predetermined connector may be attached / detached after a sufficient working space is secured by pulling the 9 forward. In addition, the same procedure may be selected when performing maintenance and inspection of the connector connection portion.

In the above embodiment, the case where the optical fiber cable or the like is pulled in from above the cabinet 1 has been described.
Change the position of the bushings 2A, 2B as described above,
And, by replacing the top and bottom of the substrate 3 and fixing it,
An optical fiber cable or the like can be drawn in from under the cabinet 1. Thus, the position where the cable or the like is drawn in 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 into the inside, and the degree of freedom in use can be greatly increased.

[0015]

As described above, according to the present invention, the connector connection plate is held so as to be able to be pulled out substantially perpendicularly to the board. In some cases, it is sufficient to pull out the connector connection plate to the front, so that a sufficient space can be secured and workability can be improved. Also,
In the cabinet, the substrate can be mounted in any direction up and down, and the optical fiber cable or the optical cord can be drawn in from either direction. This eliminates the inconvenience that the installation position of the wiring box is limited and eliminates the need to route optical fiber cables and the like around the wiring box.
It is possible to install a wiring box at a desired position and to draw in cables and the like. Therefore, there is an effect that the degree of freedom in installing the wiring box is greatly improved.

[Brief description of the drawings]

FIG. 1 is a front view of the inside of a main body showing one 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. 1;

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

FIG. 5 is a view showing a state of fusion connection and connector connection in the embodiment.

[Explanation of symbols]

1 cabinet 2A, 2B bushing 3 substrate 4A, 4B tension member fastener 5 fusion tray 6 bushing mounting plate 7a, 7b, 7c guide 8,9 connector connection plate 81, 91 connector receiving portion 82, 92 plates C _1, C ₂ Optical fiber cable 101,104 Optical cord 102,105 Core unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G02B 6/00 336 G02B 6/24

Claims (1)

(57) [Scope of request for utility model registration] 1. A tray for fusion-splicing cores of optical fiber cables or optical cords on a substrate in a cabinet having upper and lower optical fiber cable or optical cord inlets, and a plurality of trays are stacked and arranged. An optical fiber cable distribution box in which one 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 a connector connecting plate; The optical fiber cable distribution box is characterized in that the optical fiber cable distribution box is held so as to be able to be pulled out in a direction substantially perpendicular to the substrate, and that the substrate can be mounted in any desired direction in the cabinet.