JP4360499B2 - On-site optical wiring system, optical cable termination module, and optical splitter module - Google Patents

Description

  The present invention is useful when wiring an optical cable mainly in an apartment house or an office building. In particular, it will be advantageous in terms of construction and cost when a large number of optical fiber lines are opened and repeated opening and closing.

"Aiming to build intelligent buildings" Ohm Co., Ltd. p92-p95

Conventional optical cable wiring in apartment buildings and office buildings has been drawn into optical cabinets to accommodate cables, splitters, and premises cables, and cable termination and connection are performed inside the cabinet. (Non-Patent Document 1)
In such an optical cabinet system, all functions such as cable fixing, cable termination and fiber optic connection necessary for pre-wiring are installed, so the optical cabinet becomes larger and the MDF (main distribution board) installed in the building There is almost no case where it can be installed in an empty space in the BOX, and it is necessary to install an optical cabinet around the MDFBOX. In this case, the common part of the resident is pressed, and it takes time to negotiate and design the installation location, etc., and the optical fiber line may not be provided at the time desired by the customer. In addition, the optical cabinet has a predetermined number of cable terminations, the number of splitters installed, etc. depending on the size, and when an unexpected demand occurs, it is necessary to install another optical cabinet again. In order to withstand such fluctuations in demand, it is necessary to install a large optical cabinet at the initial stage, which raises the problem of increasing the initial cost. Furthermore, there is a concern that the current cabinet may touch the optical fiber core when it is opened, which may affect the working line.

  Further, when the casing itself is damaged due to outside construction or the like, the cabinet needs to be replaced, and switching work has occurred in all lines.

The on-site optical wiring system of the present invention is an on-site optical wiring system for wiring an optical cable in a building, and includes a fixing module for fixing an optical cable drawn from outside the building, and a first optical cable component that terminates the optical fiber cable. An end module; an optical splitter module that is connected to an output terminal of the first termination module and divides one optical fiber into a plurality of optical fibers; and a second optical cable termination that terminates a cable wired in the premises. has a module having a respective module separate housing, can at the mounting in a free space in the main switchboard boxes, each module utilizes what changes may be made to freely shape the fixed part of itself It is fixed to the board in the main switchboard box so that the modules can be installed in the main switchboard box using a three-dimensional space. It is characterized in.

  The on-site optical wiring system of the present invention is an on-site optical wiring system for wiring an optical cable in a building, and includes a fixing module for fixing an optical cable drawn from outside the building, and a first optical cable component that terminates the optical fiber cable. An end module; an optical splitter module that is connected to an output terminal of the first termination module and divides one optical fiber into a plurality of optical fibers; and a second optical cable termination that terminates a cable wired in the premises. It has a module, and each module has a raising function so that each module can be attached to an individual case and an empty space in the main switchboard box.

The optical cable termination module of the present invention is a housing that can be fixed to a substrate in a communication wiring board of various shapes and is miniaturized so that it can be installed in a narrow gap. It is preferable that the optical cable termination module has a two-layer tray structure so that the tape core and the single core can be separately accommodated.

  The optical cable termination module of the present invention preferably includes at least one of an FA connector, an SC connector, an MU connector, and an MT connector on the output side interface.

  The optical splitter module of the present invention has a casing that can be fixed to a substrate in a communication wiring board of various shapes and is small so that it can be installed in a narrow gap. It has an optical fiber and has a length adjusting function capable of adjusting the extra length of the plurality of coded optical fibers.

  The optical splitter module of the present invention preferably includes at least one of an FA connector, an SC connector, an MU connector, and an MT connector on the input side and the output side.

  The on-site optical wiring system according to the present invention is a wiring method that enables simple and low-cost SO construction such as opening and closing even if the number of optical fiber lines increases to the same level as metal lines in the future, and metal cables have been completely abolished. Even in this case, there is an advantage that the communication infrastructure such as MDFBOX in the building is not changed to an idle facility.

  Hereinafter, the present invention will be described in more detail based on the embodiments shown in the drawings.

  FIG. 1 shows an example of a premise wiring system of the present invention. The optical cable from the outside of the building is fixedly attached to an empty space in the MDFBOX with an optical cable fixing module. Here, the optical fiber termination module (FIG. 2) is installed in advance in an empty space in the MDFBOX, by protecting the optical fiber 4-core tape cores two by two from the case where the lead-in optical cable is torn, ) 8 pieces together. When there is no empty space on the plane, a raising function capable of freely deforming the shape is used, the fixing portion is fixed to the plate in the MDFBOX, and the three-dimensional space is used for attachment.

  The raising function is a function for installing each module using the empty space in the MDFBOX three-dimensionally. For example, a metal bracket such as a metal flexible tube, a variable length metal bracket combined with an L-shaped metal fitting, etc. Use. Further, a plastic bracket or the like integrally molded in a plastic module housing may be used.

  The tape core wire accommodated in the optical cable termination module is subjected to extra length processing in the optical fiber lower layer tray and separated into single cores. The optical fiber separated into single cores is processed with extra length in the upper layer tray, and a structure capable of attaching and fixing a core wire holding type connector to the tip every time it is opened. Connectors that can be attached include FA connectors, SC connectors, MU connectors, MT connectors, and the like. Services that use optical fibers such as dedicated lines are connected to the optical connector of the optical cable termination module.

  In addition, the optical splitter module (Fig. 3) is installed in an empty space in the MDFBOX, and the input side cord is connected to the optical cable termination module, and the output side cord is connected to the local cable termination. Connect with the optical connector of the module. When there is no empty space on the plane, a raising function capable of freely deforming the shape is used, the fixing portion is fixed to the plate in the MDFBOX, and the three-dimensional space is used for attachment. (FIG. 6) The input side and the output side cord have a structure in which a guide is provided in the splitter module housing so that the length of the cord can be adjusted so that the length can be adjusted.

  The in-house cable termination module (FIG. 4) has a two-layer structure similar to the optical cable termination module, and has a structure in which the extra length of the tape core wire and the single core wire can be processed by separate trays. An optical connector such as an FA connector, an SC connector, an MU connector, or an MT connector is attached to the tip of the single core wire so that it can be fixed to the module housing. There is a module type (FIG. 5) having a function of fixing and aligning the connector connecting portion in the distribution board for a building in which the indoor cable termination module has no indoor cable and is wired from the MDF to each room by an indoor optical fiber.

  This wiring system has a dustproof effect by completely storing the optical fiber core in each module housing or in a protective tube. Moreover, the metal cable termination | terminus part and protector work which were installed in the back surface can be implemented by moving a module by the raising function at the time of metal cable work.

  The type of connector and the wiring configuration of this embodiment are merely examples, and the present invention is not limited thereby.

  According to the local optical wiring system of the present invention, the following effects can be obtained.

  (1) It is difficult to install a large object such as a cabinet type in an existing communication infrastructure. Since this article installs the miniaturized modules in a distributed manner, the communication infrastructure provided in the building can be used effectively. As a result, it is possible to reduce the incidental work that the building owner bears.

  (2) Although the conventional cabinet could not carry out the optical wiring to the 19-inch rack, it can be terminated to the 19-inch rack according to the present invention. Since the goods can be put into service, the cost of goods due to mass introduction can be reduced.

  (3) At present, cabinets that were divided according to size were selected according to the final demand demand of the building and were designed so that there would be no shortage in the way of the cabinet. With the pattern, it is possible to cope with the increase in demand by adding modules to the empty space, so that the design cost and the initial cost can be reduced.

  (4) When existing communication infrastructure equipment cannot be used effectively, incidental construction to the building occurs, and there is a problem that it takes a long time for negotiation, design, and construction. In the present invention, the existing communication infrastructure equipment is used effectively. Therefore, the optical fiber line can be opened at low cost.

  (5) When the old cabinet is obsolete, it is necessary to newly install the cable to the cabinet and switch it. However, according to the present invention, the present invention is terminated to the empty core wire of the existing cable and switched sequentially. Therefore, switching work can be performed at low cost.

  (6) In the prior art, since connection using a special tool is performed with a mechanical splice or the like, construction time and cost are required for opening the optical wiring. Furthermore, since the connection point is disconnected at the time of removal and is connected again by a mechanical splice at the time of reopening, an article cost and a construction cost are incurred for each construction. According to the present invention, since all the connection points become connector interfaces, the SO work at the time of opening and closing can be simplified and the separation at the time of failure can be easily performed, so that construction and maintenance costs can be greatly reduced.

  (7) Since the functions of the previous cabinets have been consolidated into one point, if the case was damaged, all lines were affected. However, according to the present invention, each function was modularized as a single component and failed. Maintenance can be facilitated because only parts can be replaced.

It is an Example of the local optical wiring system of this invention. It is a general-view figure (FA connector mounting example) of the optical cable termination module of this invention. It is a general-view figure (FA connector mounting example) of the local cable termination module of this invention. It is a general-view figure (FA connector 8 branch splitter Example) of the optical splitter module of this invention. It is an optical splitter module (connector holder) of the present invention. It is a schematic diagram which shows the raising function of this invention.

Claims (6)

A premises optical wiring system for laying optical cables in a building premises,
A fixing module for fixing an optical cable drawn from outside the premises,
A first optical cable termination module that terminates the lead-in optical cable;
An optical splitter module which is connected to the output terminal of the first termination module and divides one optical fiber into a plurality of optical fibers;
Having a second optical cable termination module that terminates the cable wired on the premises,
Each module has a separate housing and can be installed in an empty space in the main switchboard box.
Each module uses an object whose shape can be freely deformed, a fixing portion of the object is fixed to a plate in the main switchboard box, and each module is placed in the main switchboard box using a three-dimensional space. A premises optical wiring system characterized in that it can be installed. Before SL optical cable termination module according to claim, characterized in that a variety of shapes are possible secured to the substrate of the communication lines inside the panel, and miniaturized housing so as to be installed in a narrow gap 1 The on-site optical wiring system described in 1 . 3. The indoor optical wiring system according to claim 2, wherein the optical cable termination module has a two-layer tray structure so that a tape core wire and a single core wire can be separately accommodated. The local optical wiring system according to claim 2 or 3, wherein the output side interface of the optical cable termination module includes at least one of an FA connector, an SC connector, an MU connector, and an MT connector. Before SL optical splitter module, we have a variety of shapes are possible secured to the substrate of the communication lines inside the panel, and narrow miniaturized so that it can be installed in the gap enclosure,
Having a plurality of optical fibers encoded,
The intra- site optical wiring system according to claim 1, further comprising a length adjusting function capable of adjusting an extra length of the plurality of coded optical fiber cords. 6. The indoor optical wiring system according to claim 5, wherein at least one of an FA connector, an SC connector, an MU connector, and an MT connector is provided on an input side and an output side of the optical splitter module.

Images