JP3391434B2 - ONU closure for communication cable connection and its arrangement method - 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, a metallic cable, an ONU (Optical Network Unit), an ONU power supply electric cable, and an optical fiber cable connection in a telecommunication line network by underground wiring. The present invention relates to an ONU closure for connecting a communication cable and a method of arranging the same so that an optical fiber cable network can be built in an underground wiring area at a low cost.

[0002]

2. Description of the Related Art An example of using a conventional optical fiber cable connection closure 50 is shown in FIG. This closure 50
Is generally two end plates 52 attached so that the optical fiber cable 1 drawn out from the cable connecting portion 51 passes through, and two vertically divided semi-cylindrical cylinders that accommodate the portion so as to cover the cable connecting portion 51. The sleeve 53 has a shape, and the two sleeves 53 are mounted between the two end plates 52, and the joint surfaces 5 of the sleeves 53 facing each other are provided.
It is a structure in which 3a are fitted together and then closed with a buckle 54 to protect the internal cable connecting portion 51 from external pressure and prevent moisture from entering the cable connecting portion 51.

On the other hand, FIG. 4 and FIG. 5 are ON for switching the communication line from the optical fiber cable 1 to the metallic cable 2.
It is a figure which shows the example which installed U61 outside the telephone office. In the conventional overhead line area, the ONU 61 is shown in FIG.
As shown in FIG. 4, by suspending it on the cable support line 63 at the utility pole 62, or by installing it on the wall surface 65 of the housing complex 64 as shown in FIG. , The ONU 61 can be shared by a plurality of services or users, and an economical communication line network has been constructed.

On the other hand, in the underground wiring area, as shown in FIG. 5, the ONU 61 is arranged in the ground cabinet 66. The optical fiber cable 1 routed from the telephone station 22 to the underground conduit 24 is provided with the above-mentioned communication cable connection closure 5 installed near the ground cabinet 66.
Connected with 0. Therefore, from the working space 21 of the underground wiring pipeline or cab equipment represented by a handhole or manhole in which the closure 50 is arranged to the above-ground cabinet 66, an underground pipeline 26 is installed, and the optical fiber cable 4 is laid there. Further, the metallic cable 5 is wired from the ONU 61 housed in the cabinet 66 to the user's building or house 23 via the underground pipes 26, 24, 25.

[0005]

Since the conventional optical fiber cable connection closure 50 has only the function of accommodating the connection portion of the optical fiber cable, in the underground wiring area, as shown in FIG. I had to use 66. For this reason, not only is it necessary to newly construct the pipeline 26 between the above-ground cabinet 66 and the work space 21, but it is necessary to obtain the consent of the land owner when using the land for installing the above-ground cabinet 66. In some cases, it was difficult to construct a railroad network, which was a factor in raising construction costs.

Further, the method of installing the ONU 61 at the time of the utility pole 62 and the method of installing the ONU 61 on the wall surface 65 of the housing complex 64 are ground installation and have no confidentiality, and when installed in the above-mentioned underground work space 21. ONU due to flooding
There was a risk that 61 would break down.

The present invention has been made in view of the above points, and an object thereof is to provide an optical fiber cable and an O-fiber cable without the need to install a ground cabinet or a new underground pipeline.
NU is to be able to economically build a telecommunication line network in the underground wiring area.

[0008]

The ONU closure for connecting a communication cable of the first invention for achieving the above object has two ends for drawing in an optical fiber cable, a metallic cable, and an ONU power supply electric cable. A face plate, two vertically split half-cylindrical sleeves, an ONU to which the optical fiber cable, the ONU power supply electric cable, and the metallic cable are connected, and a cable connecting portion between the ONU and the optical fiber cable A sealing member that seals an internal space closed by the two end plates and the two sleeves so as to be water-tight to the outside , and the ONU and the optical fiber.
Fiber cable, the metallic cable, and
A fixing frame for fixing the ONU power supply electric cable
It was built in and the fixing frame was fixed to the two end plates . 2nd invention is the optical fiber of the said optical fiber cable in the 1st invention , The said ONU
Metallic wire for power supply of electric cable for power supply, or
Composite of two or more metallic wires for communication of the talic cable
The optical fiber cable, the ONU
Electric cable for power supply, or 2 of the metallic cables
It is configured to be used instead of the above . Communication of the third invention
The placement method using the ONU closure for cable connection is
ONU closure for communication cable connection of invention 1 is underground
Place it in the work space of the wiring pipeline and
If the optical fiber cable is used to connect to the ONU
Together, the building or house from the ONU to the user side
The metallic cable is connected between the two.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION [First Embodiment] FIG. 1 is a diagram showing a configuration of an ONU closure 10 for connecting a communication cable according to a first embodiment of the present invention. Reference numeral 1 is an optical fiber cable, 2 is a metallic cable, and 3 is an electric cable for ONU power feeding.

In the ONU closure 10, 11 is an end plate for inserting a cable, one of which is hidden in FIG. 1, but two are provided on both sides. Reference numeral 12 is a vertically-semi-cylindrical sleeve that covers the whole, and there are also two sleeves. 13 is the sleeve 1
A fixing part composed of a buckle for joining and fixing two facing joining surfaces, 14 is an ONU housed inside,
Reference numeral 5 is a connection storage sheet, 16 is a fixing frame, 17 is a sealing material for waterproofing the sleeve joint surface to make the inside of the sleeve 12 watertight, and 18 is watertight when the cable is inserted into the end face plate 11. It is a sealing material for waterproofing the cable portion.

The ONU 14 is fixed to the fixing frame 16, and the cables 1, 2 and 3 are also fixed to the fixing frame 1.
It is grasped by 6. The fixing frame 16 is fixed to the end plates 11 on both sides. Then, by joining the joint surfaces of the two sleeves 12 and fixing the joint surfaces to each other with the fixing parts 13 so as to match the end face plates 11 on both sides, the end face plates 11 on both sides and the upper and lower sleeves 12 are joined together. After being integrated, the ONU closure 10 is assembled and stably installed on each cable 1, 2, 3. At this time, the inside of the sleeve 12 is protected from an external pressure and is sealed from the outside by the sealing material 17 in a watertight manner, so that the sleeve 12 is protected from moisture and water infiltration.

The end plate 11 is provided with the cables 1, 2,
A thin-walled portion 11a for selectively cutting and opening to insert 3 is formed, and the cutting and opening is performed according to the thickness and the number of cables to be inserted, and the cables are inserted there. This portion is water-tightly sealed by a sealing material 18 for stopping water in the cable portion.

The connecting portion of the optical fiber cable 1 is
The fixing frame 1 is housed together with the remaining length of the optical fiber in the conventionally used connecting storage sheet 15.
Hold at the time of 6. Also, the optical fiber cable 1 is ON
The UU 14 is also connected, and the metallic cable 2 and the ONU power supply electric cable 3 are also connected to the ONU 14.

For each of the cables 1, 2 and 3, if a cable in which any two or all of the optical fiber, the metallic line for communication and the metallic line for power feeding in each cable is used, the cable is The thin-walled portions 11a of the end plates 11 and 12 are cut open according to the number,
Water is stopped by the shield material 22 while the cables are inserted.

[Second Embodiment] FIG. 2 shows a second embodiment of the present invention.
FIG. 3 is a diagram showing the embodiment of FIG. 2 and a diagram showing a method of installing the ONU closure 10 shown in FIG. 1. Here, this ON
The U closure 10 is installed in a pipeline for underground wiring represented by a handhole or a manhole or a working space 21 of a cab facility.

As a result, the optical fiber cable 1 is provided between the telephone office 22 and the ONU closure 10,
A metallic cable 2 can be routed from the NU closure 10 to the user's building or house 23. The ONU power supply electric cable 3 of the ONU closure 10 is connected to, for example, a nearby power supply (not shown).

Therefore, even in the underground wiring area, it is possible to construct a telecommunication line network in the same manner as the network structure using the conventional cable of the metallic cable network or the optical fiber cable network and the communication cable connection closure.

[0018]

From the above, the communication cable connection O of the present invention is connected.
According to NU closure, pull out optical fiber cable, metallic cable, electrical cable for ONU feeding,
Built-in optical fiber cable connection and ONU,
Since the inside can have a watertight structure, the inside can be protected from external pressure and water, and can be used for underground wiring. Further, according to the installation method, avoiding the construction of the above-ground cabinet or the pipeline between the above-ground cabinet and the handhole, the manhole, etc., the telecommunication line using the optical fiber cable and the ONU in the underground wiring area. The network can be constructed at low cost, and it is expected to have a remarkable effect in promoting the use of optical fiber in underground wiring areas nationwide.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an ONU closure for communication cable connection according to a first embodiment of this invention.

2 is an explanatory view of underground wiring wired using the ONU closure of FIG. 1. FIG.

FIG. 3 is an exploded perspective view showing a conventional optical fiber cable connection closure.

4 (a) and 4 (b) are explanatory views of an arrangement example in an overhead wiring area outside the ONU.

FIG. 5 is an explanatory diagram of an arrangement example in an underground wiring area outside the ONU.

[Explanation of symbols]

1: optical fiber cable, 2: metallic cable,
3: ONU power supply electric cable, 4: optical fiber cable, 5: metallic cable, 10: communication cable connection ONU closure, 11: end face plate, 11a: thin portion,
12: semi-cylindrical sleeve, 13: fixed part, 14:
ONU, 15: Storage sheet for connection, 16: Frame for fixing, 17: Sealing material for waterproofing of sleeve joint surface, 18: Sealing material for waterproofing of cable part, 21: Working space, 22: Telephone office, 23: Building or Houses, 24, 25, 2
6: Underground pipeline, 50: Closure for optical fiber cable connection, 51: Cable connection part, 52: End plate, 53: Semi-cylindrical sleeve, 54: Buckle, 61: ONU,
62: Utility pole, 63: Cable support line, 64: Apartment building, 65: Wall surface.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koho, Nihon Nippon Telegraph and Telephone Corporation, 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo (56) Reference JP-A-10-308586 (JP, A) JP-A-8-242526 (JP, A) JP-A-9-135525 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02G 15/113

Claims (3)

(57) [Claims] 1. An end plate for drawing in an optical fiber cable, a metallic cable, and an ONU power supply electric cable, two vertically split half-cylindrical sleeves, the optical fiber cable and the ONU power supply. Electrical cable and ONU to which the metallic cable is connected
And a sealing material that watertightly seals an internal space closed by the two end face plates and the two sleeves so as to accommodate the ONU and the cable connection portion of the optical fiber cable from the outside. comprising a, and the ONU, the optical fiber cable, the methallyl
Check cable, and the ONU power supply electrical cable
Incorporating a fixing frame for fixing, the fixing frame
An ONU closure for connecting a communication cable, characterized in that the above is fixed to the two end plates . 2. The optical fiber of the optical fiber cable, front
Metallic wire for feeding the electric cable for ONU feeding, or
Is 2 or more of the metallic lines for communication of the metallic cable.
Connect the above composite cable to the optical fiber cable
ONU power supply electric cable, or the metallic cable
The ONU closure for connecting a communication cable according to claim 1, wherein the ONU closure is used in place of two or more of the cables. 3. An ONU black for connecting a communication cable according to claim 1.
Place the charger in the work space of the underground wiring
The optical fiber cable between the talk station and the ONU
Wiring is done at the user side from the ONU.
The metallic cable between the building and the house
ONU claw for communication cable connection characterized by
Placement method by ja.