JP4786293B2 - Optical cable connection closure - Google Patents

Description

  The present invention relates to a communication cable, particularly an access section of an aerial section of an optical fiber cable having an optical fiber core (hereinafter referred to as an optical cable), a wiring point in a fixed wiring section, a jacket connection at a cable connection point, an aerial optical cable, and a drop optical cable. Used to connect the optical cable, protects the optical cable connection part and stores the extra length of the core, and does not affect other cores when dropping or branching from the optical cable. The vacant core can be used as a necessary single core for subsequent user subscriptions, increasing the efficiency of core usage, easily responding to fluctuations in demand, and facilitating handling during connection wiring work. The present invention relates to an optical cable connection closure that can greatly improve the workability.

Conventionally, when branching, drawing in, or connecting an optical cable, the cable cores are connected to each other in the closure, and the extra length of the cable core is stored to store the connection part and the extra length of the cable core. Closures with trays are known.
This closure stores a connecting portion for connecting optical cable cores drawn from the main cable of the optical cable for the main trunk line or between the core cables drawn from the branch optical cable, and further the extra length portion of the connected core cables It is used as a connection function-dedicated closure or a drop function-dedicated closure as having a core wire extra-length storage section for protecting and storing by winding. (Japanese Patent Laid-Open No. 2001-42155)

The optical cable connection closure of Patent Document 1 is configured as a drop tray capable of separately storing the connection portion and the extra length of the core wire separately for each single core branched from the tape core wire. Is provided in a mounting portion provided in the closure.
JP 2001-42155 A

However, in a communication network using an optical cable, there is a demand for an optimum wiring form of the optical access network, good workability of the connection wiring, and provision of an optical access service quickly and inexpensively. However, there is nothing that satisfies the efficient use and economical use of optical access system facilities that are difficult to operate single cores, especially as the density of cables increases, the number of cores increases or the transmission speed increases. There is a problem that the capacity tends to be insufficient, and it is difficult to perform work and wiring arrangements associated with connection branching.
Also, in the branching operation of the optical cable, in order to pull down the drop optical cable, an unusable core wire is generated, which is uneconomical and the core wire cannot be returned to the main line again. There was a problem that the equipment could not be used efficiently and economically.

  The present invention has been made in view of these conventional circumstances, and uses a single core wire of an optical cable, and does not affect other core wires at the time of pull-down wiring and branch connection wiring from the optical cable. Single-core operation is possible, and the vacant core wire is used as a required single-core wire for subsequent user participation, etc. to increase the efficiency of the core wire connection, and the core wire connection / storage is modularized so that connectors can be connected. In addition to drastically improving workability, including maintenance work such as storage work for cores and cores, and inspection and repair of connection status, it is possible to protect single cores and to effectively use optical cables. Optical access services can be provided promptly and inexpensively, such as extending the lower part of the core wire and aerial loop wiring, and returning the branched core wire to the main line again. By providing multiple trays with different functions for storing the connection wiring and its connector connection on the tray fixing base so that they can rotate and detach freely, each tray required for function requirements can be easily added and added. It is intended to be an optical cable connection closure for aerial or ground mounting that can be removed and handled easily.

In order to solve the above-described problems, the present invention provides a termination tray including a connector storage portion that stores a connector as a connection portion of an optical cable core, and a core wire extra length storage portion that stores an extra length of the core wire. In addition, a closure for connecting an optical cable, in which a splitter tray is provided in each closure body, a termination board having a plurality of connectors detachably provided is provided, via the termination board, and further via a splitter module. A plurality of termination trays that are connected to a tape core wire connected to each other, a DS / R / TD cable, and a drop cable, respectively, to enable connector connection, and organize the connectors and extra long core portions of each connection portion. And / or a splitter tray pivotally attached to a tray mounting portion provided on the closure body and slidable toward the outside of the closure body. And the termination tray and / or splitter tray are rotated after the plurality of termination trays and / or splitter trays are pulled out of the closure body together with the tray mounting portion. It is characterized in that it can be held in an inclined state under multiple steps shifted in a staircase shape.

  The present invention uses a single optical fiber cable and connects the optical cable with a modular connector, so that the connection work and the optical fiber cable storage work, as well as maintenance work such as inspection and repair of the connection status, are implemented. The tray fixing base is provided with a plurality of termination trays and splitter trays that have different functions for storing the drop and branch connection wires and their connector connection parts. Each tray required for function requests can be added and removed easily.

  In addition, in this optical cable connection closure, when it is necessary to switch to a tray with another function due to carrier change, etc., by using a connector connection and a cable seal adapter, it is possible to cut the cords generated during the conventional fusion connection and mechanical splice connection. It is possible to simplify the work by eliminating the shrinking cord extra length processing work.

  Furthermore, the closure for connecting an optical cable according to the present invention is characterized in that the termination tray to which the core wire from the splitter tray is connected is arranged in a multi-stage manner on a tray mounting portion slidably provided on the frame. Then, the splitter tray and the termination tray are pulled out from the tray storage portion to open the selected overlapping surface, so that the work in the termination tray can be easily performed, and the workability is greatly improved.

Further, in the present invention, the termination board to which the termination tray is connected is made of a U-shaped member having a curved side surface, and the round guide is pivoted about the support shaft along the curved side surface. A single core wire separated from a core wire introduced into the center tray fixed to the center tray mounting portion, provided with a center tray mounting portion on the upper surface portion and a connector mounting portion on the lower surface portion, that is, a main A single core wire that is pulled down from the cable or a single core wire that is separated from the tape core wire is dropped down and held by the rounded guide so that the connector connected to the single core wire can be attached to and detached from the connector mounting portion. By providing, it is possible to easily fix the connector connecting portion at an arbitrary position in consideration of connection failure by providing a plurality of connector mounting members in the longitudinal direction of the core wire. DS / R / TD cable of optical cable and drop cable or outgoing cable to control the pulling and bending of the core wire when removing / attaching the connector and pulling it to the subscriber who wants SS service (dedicated line / B FLET'S basic) The connector connection with the DS cable (hereinafter referred to as DS cable) and the extra length of the core wire are securely stored and protected.
Further, the connector mounting portion of the termination board is provided with a locking configuration of the fitting groove of the guide rail and the fitting hole and the fitting convex portion corresponding to the joint surface with the connector, In order to eliminate the influence on the other core wires when the wires are attached and detached, the left and right core wire inlets of each tray are made into individual passage structures for each core wire, and the safety structure is suppressed to prevent the pulling and bending of the core wires.

  Further, in the present invention, the splitter tray includes a tray that is detachably provided by selecting a splitter module (hereinafter referred to as an SP module) including a plurality of connectors on both the left and right sides of the tray, and a storage that stores the extra length of the core wire. The optical cable connection closure is provided with a structure in which the upper and lower two layers of the tray and the tray formed by distributing the core wire lead-out portion to the left and right are connected to each other by a hinge portion. Splitter tray (SP tray) accommodates single-core cable, SP input line, SP output line, drop cable or DS cable connector, extra cable length, and SP module for withdrawal to subscribers requesting PON service Protects the SP module with multiple connectors so that it can be attached to and detached from the tray by the mounting part. In addition, grip holder bases for fixing the drop gripper are provided at both ends of the tray so that the drop cable can be pulled out from either the left or right side, and the connector connection part of the SP input line can be distributed and fixed to the left and right. A safe configuration that suppresses the occurrence of pulling and bending of the core wire by making the right and left core wire inlets of the tray into individual passage structures for each core wire in order to eliminate the influence on other core wires when attaching and detaching the core wire It has become.

  In the optical cable connection closure according to the present invention, the splitter tray includes a splitter module in which a plug is provided on a core wire connected to the termination board, and a socket is provided on a plurality of core wires connected to each termination tray. The drop termination tray (DS tray) is configured to be a splitter tray that is provided and can be connected to a connector, so that the drop termination tray (DS tray) is connected to the outgoing connection core wire (SS tray) or splitter tray (SP tray). This connector is designed to store and protect the connector connecting portion and the extra length of the single core wire and the DS core wire, and the DS cable side with a connector fixing structure that can be expanded each time depending on the subscriber. The long absorption structure enables the distribution of the core wire in the direction of the left and right connectors, and also affects the extra length of the core wire when pulling out the connector on the DS cable side. Not there as a safe configuration. The drop termination tray is pivotable by a hinge portion of a pivotal support, and is detachably provided on the tray fixing base so as to absorb the extra length of the core wire that absorbs the difference in the length of the core wire caused by the number of connection of each core wire. In addition, it is designed to suppress the occurrence of pulling or bending of the core wire when the connector is attached or detached.

The termination tray in the present invention is provided with a plurality of connector storage portions divided into left and right, provided with a drop fixing member for fixing the core wire from the splitter tray at the introduction portion, if necessary, a lower extension termination tray, DS / R / TD termination trays and drop termination trays are pivotally attached to the tray fixing base via a tray mounting portion in a state where a plurality of trays are pivotally attached to each other. , A tray formed with a storage portion for the connection portion of the tape core wire and the split core wire cut at the center point of the closure and the extra length of the core wire in order to operate the single core by installing a closure in the tape core cable route, For example, up to 8 connections on one side can be fixed, and the extra length of the main cable side tape core can be stored in the tray. It can be easily tray identified by dividing the outlet of the flop fraction into individual route.
Furthermore, the tray mounting portion is slidably disposed in the tray storage portion in which the comb teeth holding the termination tray in a horizontal state are arranged in multiple stages so that the splitter tray and the termination tray can be slid back and forth. The tray can be moved to a position where it can be easily connected in each tray, and since it is a rotatable tray, it is easy to open the overlapping surfaces of the stacked trays, simplifying inspection and repair work. I can plan.

  In the optical cable connection closure according to the present invention, the end face plate provided in the closure main body is provided with an extended side wall portion having a cable insertion path for inserting various cables, and a seal portion having a drop cable insertion hole is dropped from the surface of the seal portion. By forming the thin wall structure up to the cable insertion hole, the thin part can be cut on site at the time of carrier change so that the drop cable can be inserted into the end seal on the opposite side for easy handling, and the sleeve is removed from the closure body during work. It is possible to deploy a sleeve release holder that can adjust the open state of the sleeve that is expanded without any problem, and to attach a band type sleeve release holder that can maintain the work side open state and continuously adjust the opening degree. In addition, by providing an extended side wall on the end plate provided in the closure body Used as face seal with waterproof function when the cable accommodated in the closure insert and sorting the various types of cables such as cable or drop cable, can be achieved safely waterproof drop cables and DS cable.

In the optical cable connection closure of the present invention, a termination tray having a different function for protecting and storing the connection portion of the optical cable core and the connection excess length portion is provided on the tray fixing base. It is configured to be fixed and maintained by a locking part consisting of a stop piece and a locking receiving part, and is provided in a plurality of tray mounting parts that can be rotated and detachable by a hinge part, and is fixed to a frame provided in the closure body. In addition, since a plurality of the splitter trays and the drop termination trays are slidably arranged, each tray can be repositioned to perform wiring processing, and the main line can be connected to any closure for light demand. It is easy to pull down only the required single core wire or return it to the main line.
That is, separate the multi-core optical fiber ribbon from the optical fiber single core, select only one core or more and connect it to the cable, and connect the other to the bottom as an optical fiber single core. It becomes possible to hold it so that it can be included. Further, the extra long core wire necessary for the connection work can be stored together with the connection portion by opening or removing an optional drop tray.

  In addition, the drop termination tray and the splitter tray are arranged in multiple stages so as to be displaceable, and can be freely rotated at a predetermined position. The drop termination tray and the splitter tray are multi-layered in connection units, and the core wire connection portion is not fixed. Further, since the extra length of the core wire can be handled and stored while ensuring the radius of curvature, it is stored with a degree of freedom in absorbing the extra length of the core wire, and is used in a form that does not adversely affect the transmission characteristics.

The present invention includes a termination tray and a splitter tray provided with a connector housing portion for housing a connector as a connecting portion of an optical cable core wire and a core wire surplus length housing portion for housing a core wire surplus length. In addition, a termination panel having a plurality of connectors detachably provided is provided, and the tape core, DS / R / TD cable and drop cable are connected via the termination panel and further via a splitter module. A plurality of termination trays and / or splitter trays arranged on the closure body, each of which is connected to each other to enable connector connection and to organize the connectors and extra-core portions of each connection portion. A plurality of termination trays and / or pivotally attached to a tray mounting portion that is slidable toward the outside of the plurality of trays. After the splitter tray is pulled out to the outside of the closure body with the tray attaching unit, it has a structure that is tiltable holding under multiple state where the shifted stepwise rotate the said termination tray and / or splitter tray Therefore, when pulling out from the optical cable and branch connection wiring, single core operation can be performed without affecting other core wires, and the empty core wires can be used for subsequent user subscriptions. Use as a core wire to increase the efficiency of core wire use, and connect and store the core wires in a modular configuration so that the connector can be connected. Connection work, core wire storage work, and maintenance work such as inspection and repair of connection status are also possible. In addition to the significant improvement, it is possible to protect a single-core cable and to effectively use an optical cable. It can be used for extending the lower part of the cable and for aerial loop wiring. In addition, the optical access service can be provided quickly and inexpensively, for example, the core once branched can be returned to the main line, and the functions for storing the drop and branch connection wires and the connector connection portions thereof are different. Multiple trays can be installed on the tray fixing base so that the tray can be rotated and detached. Each tray required for the function requirements can be easily added, added, removed, and the core connection work is extremely easy and good. Cable switching wiring processing can be done easily and the closure can be easily handled.

  In the optical cable connection closure of the present invention, the core wire for switching and connecting each tray is provided with the connector socket and / or the connector plug, and the splitter tray and / or the termination tray is connected to the connector. With this configuration, a single core of an optical cable can be used, and a single core can be operated without affecting other cores when dropping and branching from the optical cable. The wire is used as a single core wire necessary for subsequent user subscription, etc. to increase the efficiency of core wire use, and the core wire connection / storage is modularized so that the connector can be connected. Workability including maintenance work such as inspection and repair of connection status can be greatly improved.

Furthermore, in the optical cable connection closure according to the present invention, the termination board is formed of a U-shaped member having a curved side surface, and the round guide is pivotally supported about the support shaft along the curved side surface. A center tray mounting portion on the upper surface portion, a connector mounting portion on the lower surface portion, and a single core wire separated from the core wire introduced into the center tray fixed to the center tray mounting portion. The connector attached to the single core wire is detachably attached to the connector mounting part, and can be prevented from being pulled or bent when the connector is attached or detached. It is easy to see the core wire at the time, and the wiring work is easy and quick, the single core wire can be safely protected, and the shortened core wire can be easily taken when the core wire connection fails. Vignetting, since it is pulled down and the switching of the core wire, the core wire connection work helps to simplify core storage work, the process for single-core operations, the excellent storage work function can be exhibited.
The center tray has a plurality of flap mounting holes, and a flap capable of binding a single core separated from the core is removably provided in the flap mounting so as to protect the core of the single core and protect the core. By making line identification possible, since each flap is aligned and fixed, when dropping with the remaining single fiber bundled in any flap, the single fiber bundled in other flaps will not be affected. It is easy to attach and detach, and eliminates misidentification work, so that workability can be remarkably improved.

  In this optical cable connection closure, the connector mounting portion of the termination board includes a lattice-shaped guide rib into which a connector storage case that can be detachably mounted on the connector can be inserted, and a fitting hole formed between the guide ribs. By having a configuration in which a locking piece that can be locked in the locking hole is provided corresponding to the connector socket, the connector storage case can be detachably arranged, and the connector can be inserted and removed in the connector socket. In addition to simplifying connector attachment and removal work, it is easy to ensure safety after the connector is installed and set, and it also helps to prevent the drop of the drop cable when connecting to each tray or SS connection. And the occurrence of bending can be suppressed, contributing to wiring protection.

  In addition, a splitter tray with a configuration that enables connector connection is provided with a splitter module with a plurality of connectors detachably mounted in the tray, and a guide that suppresses the occurrence of pulling or bending of the core wire when the connector is detached. Since the splitter module is removed, the splitter module can be opened and handled separately from the tray when attached, and can be used in a form that can be easily connected and updated and added to each tray.

  Further, according to the present invention, the termination tray configured to enable connector connection is provided with connectors for connecting the core wires by selecting a plurality of connector storage portions in the longitudinal direction of the core wires, The pulling and bending of the core wire can be suppressed when the connector is attached / detached, the core wire can be easily seen during the single core separation work, the wiring work can be done easily and quickly, and the single core wire can be safely protected. In addition, since the core wire shortened when the connection of the core wire fails can be easily attached and the core wire can be pulled down and switched, it helps to simplify the core wire connection work and the core wire storage work. The function which was excellent in processing, storage work can be demonstrated.

  In this optical cable connection closure, the connector mounting portion of the termination board is provided with a fitting groove of the guide rail and a locking structure of the fitting hole and the fitting convex portion corresponding to the joint surface of the connector. As a result, the connector can be easily attached and detached, and the safety after the connector installation set can be easily secured, and it also helps to prevent the drop of the connection cable to each tray or drop cable in the case of SS connection. This can suppress the occurrence of pulling and bending of the wiring and contribute to wiring protection.

  In the optical cable connection closure, the splitter tray has a tray that is detachably provided by selecting a splitter module having a plurality of connectors on both the left and right sides of the tray, and a storage portion that stores the extra length of the core wire. In addition, a structure in which the upper and lower trays, which are formed by distributing the core wire lead-out portion to the left and right, are connected to each other by a hinge portion so as to be freely opened and closed. Can be separated and stored, and the splitter input core wire from the termination board is connected to the splitter module and connected to the termination tray, making it easy to wire to each termination tray via the termination board Can be simplified and can contribute to the improvement of workability.

  In addition, the splitter tray is provided with a plug in the core wire connected to the termination board, and a splitter module having a socket provided in a plurality of core wires connected to each termination tray is provided for connector connection. When the splitter tray is configured, it is simplified as a wiring system that connects the splitter input core wire from the termination board to the splitter module and connects to the termination tray. To maintain the quality of the product.

Further, in the optical cable connection closure as in the embodiment of the present invention, the termination tray is provided with a plurality of connector storage portions divided into left and right, and a drop fixing member for fixing the core wire from the splitter tray at the introduction portion. Provided as necessary, lower extension termination trays, DS / R / TD termination trays, and drop termination trays, each of which is stacked on the tray fixing base via the tray mounting portion, and rotated by the pivot portion. If it is pivotally mounted, even if there is a difference in the extra length of the core wire due to the number of times the core wires are connected in the tray, it can be handled and stored because there is an extra length storage part that absorbs the extra length difference. It is possible to obtain high reliability in storing the extra length of the core without affecting the length of the cable, and it is possible to switch between multiple stacked trays, greatly improving safety and workability as a closure. Door can be.

  Further, the optical cable connection closure includes a connection portion storage portion for storing the connection portion of the optical cable core wire, and a core wire extra length storage portion for storing the extra length of the core wire to enable connector connection. Wiring connection by arranging the tray mounting part slidably in the tray storage part with multi-stage comb teeth that hold the spreader tray and termination tray horizontally so that the termination tray can be slid back and forth. Other inspection and repair processing operations can be performed by shifting to a position where each tray can be easily connected, and because it is a rotatable tray, the overlapping surfaces of the stacked trays can be easily opened. Therefore, the inspection and repair work can be simplified.

In the present invention, the end face plate provided in the optical cable connection closure is provided with an extended side wall portion having a cable insertion passage for inserting an optical cable, and the cable adapter that can be opened and closed in half with the cable insertion passage for inserting various cables is sandwiched between By attaching it detachably with a single piece, it is used as an end face seal with a waterproof function when the cables such as the main cable and drop cable are sorted and inserted and accommodated in the closure, so that the drop cable and DS cable are waterproofed. Therefore, it is possible to improve the handling of separated wiring.
In addition, the cable adapter is formed with a thin structure from the seal surface to the drop cable insertion hole so that the drop cable can be inserted into the opposite end face seal by tearing the thin portion at the site when changing the carrier. It is easy to handle and can greatly improve workability.

To illustrate embodiments of the present invention with reference to the drawings, the closure body 1 shown in FIGS. 1 to 3 is integrally connected to a hinge section 1 _1, openable consist configured sleeve, sealing members with cable A An end face plate 2 to be inserted through is detachably provided at both ends. (FIGS. 1 to 3)
The optical cable A is introduced and led out into the closure main body 1 through the end face plate 2 and is held by the cable TM gripping tool 3 (cable tension member gripping tool) and pulled down from the main core a of the optical cable A, for example, the main cable. The single core wire or the tape core wire is connected to the tape core wire b connected via the splitter module B via the termination board 11 on which a plurality of connectors C serving as connecting portions of the main core wire a can be provided. The termination tray 4 is connected to the DS / R / TD cable c and the drop cables d and d ₁ to enable the connector connection, and to arrange the connector C of each of the connection portions and the extra long core portion. , 5 and 6 and a plurality of splitter trays 7 are provided. (FIGS. 2 to 9)
These termination tray accommodating the connector housing portion 4 _1, 5 _1, 6 ₁ for accommodating a connecting portion of the main core a of the optical cable A as shown in FIGS. 7 to 9, the core wire extra length heart line excess length storage section _{4 2,} 5 2, _{6 2} and the lower with each stretched termination tray 4, DS / R · TD termination tray 5 and the drop termination state in which the tray 6 was more superimposed trays fixing base 10 In the closure body 1, the optical cable connection closure is provided. Further, the splitter tray 7 and the center tray 8 that store the splitter module B, and a plurality of connectors for the connection portion C of the main cable a of the optical cable A can be provided. annexed a Narutanban 11, and a core wire excess length accommodating portion 9 ₂ for accommodating the core wire extra length and connecting portion housing portion 9 ₁ for accommodating a connecting portion of Shukokoro line a optionally connected Tray 9 is closed It is then furnished to the lower or upper part of the main body 1. (Fig. 10)
The lower extension termination tray 4 and the DS / R / TD termination tray 5 have a two-layer structure as shown in FIG. 7B, for example, a DS / R / TD termination at the center of the lower extension termination tray 4. incorporate tray 5 are stacked is provided freely by connexion pivots pivot portion _3, but can also be used separately arranged as needed.
Further, in the termination tray of the lower extension termination tray 4, DS / R / TD termination tray 5 and drop termination tray 6, a connector C is inserted into the connector storage portions 4 ₁ , 5 ₁ , 6 ₁ as necessary. A dummy socket 46 that can be removably fitted is attached, and the connector C of the user's use stop wiring is fitted and stored in the dummy socket 46. (FIGS. 8a to 8c)

The connector C serving as the connection portion of the main cable a of the optical cable A includes a detachable connector socket and a connector plug. The connector C connects the termination board 11 and the splitter tray 7 so that the connector can be connected. The output core line a ₁ separated from the splitter tray 7 is connected to a termination tray such as a lower extension termination tray 4, a DS / R / TD termination tray 5, and a drop termination tray 6 so that they can be connected to a connector. Further, in the case of SS connection, it can be used as a drop cable d ₁ directly from the termination board 11.
Further, the termination trays 4, 5, 6 and the splitter tray 7 are pivoted to a slidable tray mounting portion 13 of a tray storage case 12 provided on the tray fixing base 10 in a stacked state. It can be freely pivoted and is installed in the closure body 1 so that the wiring process can be easily performed. (FIGS. 11 and 12)

A plurality of connectors C connected to the core wire a are provided on the connector mounting portion 14 of the termination board 11 so that the connectors can be connected. In addition, the splitter tray 7 is a two-stage arrangement of the splitter tray 7 in which a splitter module B provided with a plurality of connectors C for connecting the single core wire a is inserted and deployed to the left and right to enable connector connection. In addition, a plurality of connectors C connected to the output core wire a ₁ separated from the splitter tray 7 are provided, and a lower extension termination tray 4, a DS / R / TD termination tray 5 and a drop are provided. The termination trays 6 are arranged in a stacked manner, and the termination trays 4, 5, 6 can be pivoted to the tray mounting portion 13 by hinges, respectively. A closure for connecting an optical cable having a configuration in which it is provided and obliquely disposed in the closure main body 1 is provided. For example, the termination trays 4, 5, 6 including the splitter tray 7 and the drop termination tray 6 are swung in a stepped manner so as to be freely pivoted on the tray mounting portion 13 provided on the fixed base 10. Deployed to hold tilt.

As the termination board 11 has an inner guide and an outer guide for holding the cable turn to the left and right, made a U-shaped member having a curved side surface, the bearing 15 a round shape guide 15 along the curved side surface ₁ connected to the support shaft 15 ₂ by, rotatably and pivotally supported around a support shaft 15 _2, a center tray mounting portion 14 ₁ to the upper surface portion, and the connector attaching portion 14 on the lower surface portion, closing the fixed guide 15 and a lock portion 14 ₂ which is used as a receiving opening, the center tray mounting portion 14 ₁ a fixed center said single fibers separated from the core wire a to be introduced into the tray 8 a round shape guide 15 Thus, a connector C connected to a single core wire is detachably attached to the connector mounting portion 14 via a cylindrical connector socket 16.
The termination board 11 is fixed to the tray fixing base 10 and is provided facing the end face plate 2 in the closure main body 1 and corresponds conveniently to the connection of the core wire of the optical cable A introduced and led out. It is like that. (FIGS. 3 and 4)
The rounded guide 15 is preferably provided with a locking portion at the tip so that it can be detachably locked to the termination board 11 so that the main core wire a can be securely pressed.

The connector mounting portion 14 of the termination board 11 has a lattice-shaped guide rib 24 serving as a holding groove into which a connector socket 16 into which the connector C can be removably mounted can be inserted, and a fitting formed between the guide ribs 24, 24. It is preferable that a locking piece 17 that can be locked to the joint hole 25 and the locking hole 26 is provided corresponding to the connector socket 16 so that the connector socket 16 can be detachably provided. (FIGS. 5 and 6)
That is, in order to allow the connector C to be inserted into and removed from the cylindrical connector socket 16 so that the connector can be easily attached and detached, a plurality of guide ribs 24 are provided in a grid pattern on the mounting plate, and the mounting between the guide ribs is performed. provided a pair of fitting holes 25 in the plate, fitting hole 25 freely or be deployed detachable connector socket 16 provided with a locking piece 17, 17 ₁ which can engage (FIG. 5), or guide rib between 24 A fitting socket 25 and a locking hole 26 are provided in the mounting plate, and a connector socket 16 provided with a locking piece 17 that can be locked to the fitting hole 25 and the locking hole 26 is detachably arranged (FIG. 6). The connector C may be removably disposed in the connector socket 16.

In order to detachably mount the connector socket 16, the connector socket 16 is inserted while sliding between the guide ribs 24 serving as gripping grooves along the mounting plate, and the locking piece 17 is inserted into the fitting hole 25. in may be press-fitted locking the leading end of either locking piece 17 press-fitting the engaging piece 17 ₁ to other party of the fitting hole 25 in the retaining hole 26, further the guide grooves on both the outside surface of the connector socket 16 27 And is inserted and slid and fixed to the protrusions of the guide rib 24 to help prevent the connector socket 16 from falling off. (FIGS. 5 and 6)
As a countermeasure against vibration of the drop cables d and d ₁ , a connector fixing member 28 is slidably attached to the connector fixing base 29 for fixing the connector C inserted into the connector socket 16 in order to fix the drop cable. Thus, the safety of the connector C mounted after the connector C is mounted on the terminal board 11 by fitting and holding one end of the connector C by the connector fixing member 28. It can be easily secured and can be stably deployed on each tray. (Figure 3)

As the splitter tray 7, in which is provided a splitter module B having a plurality of connectors detachably by selecting the module mounting portion 7 in _one on the left and right sides of the tray, further accommodating the core wire extra length a tray of upper and lower layers of the tray formed by distributing a core-guiding portion in the left and right has a slack storage section 7 ₂ can be closed by the engagement portion 7 ₅ connected freely by connexion closing the hinge portion 7 ₄ configuration and then, is provided to be freely and detachably pivoted to the tray mounting portion 13 at pivot portion 7 _3. (Fig. 9)
The splitter tray 7 is a splitter module in which a plug is provided on the core wire a connected to the termination board 11 and sockets are provided on a plurality of core wires connected to the termination trays 4, 5, 6. It is preferable to configure the splitter tray 7 in which B is provided to enable connector connection.

These said termination trays 4,5,6, the connector receiving portion _{4 1,} 5 1, a plurality divides _{6 1} to the left and right, cord extra length accommodating portion for accommodating a core wire extra length _{4 2, 5} 2, 6 ₂ to form, the splitter tray 7 is provided as needed gripper base 18 or the locking piece portion 18 ₁ a core wire fixed in the introduction of more, the lower stretch termination tray 4, DS / R The TD termination tray 5 and the drop termination tray 6 are pivotally attached to the tray mounting portion 13 by pivot portions 4 ₃ , 5 ₃ , and 6 ₃ , respectively. good comb teeth 18 ₂ to keep a horizontal state for deployment in a state of multiple stacked on the tray accommodating case 12 in the multi-stage, also the tray mount portion 13 is mounted on the tray accommodating case 12 slidably terminated Tray 4, 5, 6 and splitter tray 7 together It is configured so that it can be slid, and an area for tray operation is secured by sliding, and the tray is tilted and held in a multiplex state where the tray is shifted stepwise after being pulled forward. It is. (FIGS. 11 and 12)
In this way Sonaere pre Symbol tray mounting portion 13 slidably through the slide base 13 ₁ in the tray accommodating case 12, terminating trays 4, 5, 6 and splitter trays 7, the sleeve of the closure body 1 When it is expanded, it can be pulled out to the outside of the sleeve and opened, so that the tray operation can be easily performed.

Further, the termination trays 4 and 5.6 can accommodate a maximum of 4 cores, and connector storage portions 4 ₁ and 5 ₁ provided with a plurality of connector mounting members, for example, grid-like ribs, in the longitudinal direction of the core wire. , 6 _1, a core wire excess length accommodating portion for accommodating a core wire extra length 4 _2, 5 _2, 6 ₂ and the ones with respectively, at any position of the connector connection portion in consideration of the connection failure In order to be able to be fixed, and to form a stopper structure holding piece that suppresses the pulling and bending of the core wire when the connector is detached, and then withdraws to the subscriber who wants SS service (dedicated line CB FLET'S Basic) single-core cable and drop cable or outgoing cable DS cable (by core DS connected to the tray) connector and called center line surplus length of the core wire excess length storage section 4 _2, 5 _2, to protect the 6 _2.
Further the gripper base 18 or the locking piece portion 18 ₁ for dropping fixed parts provided in the tray both ends or one side portion, so as to draw a drop cable from any right or left side, moreover to other core during core detachable In order to eliminate the influence of the above, the left and right core wire inlets 19 of the termination trays 4 and 5.6 are provided as individual passage structures for each of the core wires so that the core wire is prevented from being pulled or bent.

The splitter tray 7 provided in the optical cable connection closure is an eight-branch splitter module tray, and is used for pulling a PON service to a subscriber who requests a PON service. A connector connecting portion of the core wire a ₁ and the drop cable d or the DS cable c (connected to the DS tray by the core wire), the extra length of the core wire, and the splitter module B are housed and protected. module mounting portion _{7. 1,} for example a certain splitter module B of the connector socket in the splitter tray 7 with a is provided with detachably by a peripheral wall rib or pawl portion and the rib, also the drop termination tray 6, the gripper fixed Gripper bases 18 are provided at both ends of the tray and can be To be pulled out of Ppukeburu d, moreover with a structure in which the connector C of each terminating tray 4,5,6 respectively SP input line is provided with a connector housing portion 4 _1, 5 _1, 6 ₁ can be fixed in distributed to the left and right In order to eliminate the influence on other cores when attaching / detaching the core wire, the left and right core wire inlets 19 of the tray are made into individual passage structures for each core wire to form a guide with a stopper structure that suppresses the occurrence of pulling or bending of the core wire. And a safe configuration.

Further, as the termination trays 4, 5, 6, a connector provided with a plurality of connectors C for connecting a core wire which is an outgoing side core wire from the splitter tray 7 and / or the connection tray 9 and a DS core wire. It is designed to store and protect the connecting part and the extra length of the core wire, and it is a connector fixing structure that can be expanded each time it is handled by the subscriber. to allow cord distribution, there a secure configuration by engaging piece portion 18 ₁ of the stopper structure in order not to affect the core wire extra length when pulled out DS core wire side of the connector.

The absorbing the drop terminated the tray 6 is pivotable by pivot portion 6 _3, provided freely tray attaching unit 13 detachably attached to the bearing portion with a cut, the core wire extra length difference generated by the connection number of the cores the core wire excess length accommodating portion 6 ₂ is formed of, the occurrence of tensile and bending of the cord provided with guide suppressing stopper structure when further connector desorption.
Also provided gripper base 18 of the drop gripper fixing to the tray opposite ends, drop cable d from any of the left or right side, so as to withdraw the d _1, moreover fixed connector part of the SP input line is distributed to the right and left In order to eliminate the influence on other cores when attaching and detaching the core, the left and right core inlets 19 of the tray are configured as individual passage structures for each core to suppress the pulling and bending of the core. A structure guide was formed to provide a safe configuration. (Fig. 7a)

In addition, the lower part which formed the storage part of the connecting part of the tape core wire and the split core wire cut at the center point of the closure to install the closure in the tape core cable cable route, and the core wire extra length termination tray 4 extend, for example can be one up to four connecting component fixed as shown in FIG. 7b, the core wire excess length accommodating portion core to absorb the connector receiving portion 4 ₁ and the core wire extra length to hold the connector C to form a slack storage section 4 _2, so as to draw the ribbon and the split insertion core wire from any of the left or right side, a configuration can be fixed by distributing the iN side or the OUT side. Incidentally, the core-guiding join the club 19 to guide and out a core are to be held accurately cord provided locking piece portion 18 ₁ made of cord pressing piece rotatably.
Further, the lower extension termination tray 4 has a connection portion between the tape core wire cut at the center point of the closure and the insertion core wire and an extra long core in order to install a closure in the tape core cable route and operate the single core. It is used to store and protect the wires, but the main cable side tape core extra length can be stored in the tray, and this tray is arranged on the upper and lower sides so that it can be used in a bilaterally symmetrical form. By dividing the outlet for the tape into individual routes, it can be used for easy identification. (Fig. 7b)

  Each tray is a molded product that is integrally molded or individually molded with a synthetic resin, has a substantially rectangular outer shape, and has an inner surface formed in the same or similar shape, and each tray is mounted on the tray fixing base 10. A plurality of trays or tray mounting portions 13 are attached by hinges to be fixed in the closure body 1 at a time.

The splitter tray 7 and the termination trays 4, 5, 6 except for the connection tray 9 are arranged so as to be horizontally held in a multiplexed state in a tray storage case 12 attached to the tray fixing base 10 made of a frame. Each of the termination trays 4, 5, 6 and the splitter tray 7 is detachably attached to a bearing portion having a cut by a pivotal support portion 4 ₃ , 5 ₃ , 6 ₃ , 7 ₃ . 13 is fitted. (Fig. 12)
The tray mounting portion 13 is provided so as to be movable slidably for movement until the tray accommodating case 12 bunk shape near the tip of the comb teeth 18 ₂ that has shifted, the area when the tray work by sliding secured, well to the to open inclined maintained under multiple state in which shifted each tray stepwise from drawer forward, during storage is fixed by maintaining the respective trays in a horizontal state on the comb teeth 18 ₂ The

An example of the closure 1 provided with end face plates 2 fitted to both end wall fitting portions of the sleeve of the closure body 1 will be described. The main optical cable A is connected to the end face plate 2 via a spacer (not shown). The cable TM gripping tool 3 and the support wire gripping tool are fixed to each other, and the cable is connected and connected to the cable gripping tool. In addition to the connection tray 9 and the splitter tray 7, the main optical fiber a derived from the main optical cable A includes the lower extension termination tray 4 or termination tray 4 and the DS / R / TD termination tray 5. And a drop termination tray 6 and the like, and are led out from the end face plate 2 as a cable for dropping, and are wired as a drop cable d, d ₁ or a DS cable c, and a tape core wire b. (FIGS. 1 and 2)

The optical cable connection closure of FIG. 1 is installed in the tape core cable route, and in the case of closure wiring with the light cable A in the closure for single-core operation, the main core separated by the center tray 8 as shown in FIG. The line a is connected to the splitter tray 7, the lower extension termination tray 4, the DS / R / TD termination tray 5 and the drop termination tray 6 through the termination board 11, and each tray can be connected to the connector. In order to achieve this, all connectors in which the optical fiber core wire connection and storage are modularized can be connected by the core wires a and a ₁ having connector plugs and connector sockets at the terminal and the drop cables d and d ₁ and the DS cable c. It is as a thing.

Also, the closure body 1 is continuous at the hinge portion 1 ₁ is configured by a sleeve that can be split, sleeve open holder 30 for example can adjust the opening state of the sleeve to be expansively opened, in such ring 31 and the hook 32 in FIG. 3 It is good to be able to continue through the connection mechanism which has a latching | locking part in a terminal, and to fasten the closure main body 1 so that the internal sealing performance of a closure can be maintained. In this case, if the sleeve opening holding tool 30 is used, the open state on the working side can be maintained without removing the sleeve during work, and the degree of opening can be continuously adjusted, and there is no obstructing member on the working side. It may be used in a form that is easy to handle.

Further, a cable seal adapter is preferably detachably mounted on the end face plate 2 provided on both end faces of the closure body 1 for use. The end plate 2 provided in the closure body 1, the extended side wall portion 2 ₁ with a cable insertion passage 21 for inserting the optical cable A is provided, and a portion of the cable insertion passage 22 for inserting a variety of cables opened and closed at halved The cable adapter 20 is configured, and the cable adapter 20 is detachably mounted by the holding frame piece 23 and is incorporated into the closure body 1. (FIG. 13) The cable seal adapter 20 is attached to and used for a waterproof end face seal in the case of a cable stored in a closure, and may be provided with a plurality of core insertion passages having slits and seal pieces for inserting various cables. Moreover, it is preferable to use a structure in which a cable with an optional connector can be attached or detached, or a structure that has a waterproof structure with a slit provided with a thin film at each cable introduction port.
Incidentally, the end plates 2 provided in the closure body includes an extension side wall 2 ₁ with a cable insertion path for inserting the optical cable A, drop cable insertion holes of a certain drop cable inserted through the seal portion from the sealing portion surface pores 2 ₂ until forming a thin structure in which a thin portion 2 _3, the cable adapter opened and closed by the detachably mounted by clamping frame pieces halved, the seal portion thin structure from the seal portion surface to the drop cable insertion hole By forming it, it is preferable that the thin part is torn at the site at the time of carrier change so that the drop cable can be inserted into the end face seal on the opposite side so that it is easy to handle and workability is improved.

  Further, a tray mounting portion 13 for rotatably mounting the termination trays 4, 5, 6 including the splitter tray 7 and the drop termination tray 6 is disposed on the tray fixing base 10. For example, a guide groove that opens to the outside is formed in a bearing portion into which a pivot shaft or a hinge shaft provided in the shaft is inserted, and can be inserted into and removed from the guide groove by a narrow cross section formed on the pin shaft. The pin shaft is detachably disposed on the tray mounting portion 13 so as to be locked and supported, and the pin shaft can be removed or inserted at a predetermined position of the narrow cross-section portion in the opening. It is good.

  In order to make the plurality of termination trays 4, 5, 6 and the splitter tray 7 detachable from the tray mounting portion 13, the trays are used individually or as stacked trays alternately stacked in the front-rear direction. Also good. In this case, the bearing portion or the mounting arm portion that engages with the pivotal support portion with the pin shaft protruding from the tray main body may be provided at both side symmetrical positions of the tray mounting portion. Further, it can be configured so that it can be detachably mounted in either the front or rear direction, and each tray in the closure main body 1 can be moved by a slider so that the core wire connection work can be performed easily.

An elastic holding member (not shown) provided with a core wire insertion hole with a separation slit is press-fitted into the core wire lead-in / out portion formed in each tray to ensure the support of the core wire. As the holding member, a nylon tube having an insertion hole or a sponge having a separation slit is selected and used according to the core wire diameter or the number of core wires.
Further, guide ribs and side walls may be selected and partitioned as necessary in the connector housing portion, splitter housing portion, and extra long core wire housing portion, or a core wire presser piece or a locking claw that prevents the core wire from floating is integrated. To make sure that the connector that becomes the extra long core wire and the core wire connecting part can be securely held in each tray, or the connector storage part or the extra conductor length storage part is separated and stored separately for each tray. However, the bending of the fiber core wire from the cable insertion portion is extremely small, so that twisting when the core wire is stored can be prevented, and high reliability can be obtained with safe and high density storage.

Incidentally, the in center tray 8, inhibit the occurrence of cord tension and bending as an individual channel structure of the left and right ends forming the core-guiding join the club 8 _each by projecting a grid-like rib needed cord stopper formed in the guide structure, there was further flap attachment holes ₈₂ for attaching the flaps 33 for supporting and holding the core wire a ₁ forming a plurality. (Fig. 4a)
The flap attachment holes _82, although the core wire are as attained the core protection and core identification single core separated single core wire deploying removably flap 33 capable of binding single fibers When each flap 33 is aligned and fixed, when dropping with the remaining single core wire bound to any flap 33, it is possible to attach and detach so as not to affect the single core wire bound to the other flap 33. You can work safely.
Further, as shown in FIG. 14, the flap 33 is formed by connecting half-folded holding pieces each having a core wire insertion groove 34, and provided with a locking portion 35 made of unevenness facing the abutting surface. There, configured to be supported by holding the output cord a ₁ bent from the connecting portion, and further the flap flanged projection 36 to be inserted into the mounting hole ₈₂ is projected, the projection 36 of the center tray 8 is inserted into the flap attachment hole _82, and slide on the surface of the center tray 8 can detachably fixed, the flap removal, can be removed if the mobile flap 33 by the operation piece 37 is returned in the opposite direction.

When the splitter processing is performed in the splitter tray 7, the optical cable core and the splitter, and the splitter and the trop cable can be connected in the splitter tray 7 and the drop termination tray 6, and the processing of the splitter outgoing line is also performed. It is desirable to correspond to each tray.
In any case, the splitter tray 7 and the drop termination tray 6 are rotatably held by a multi-stage tray mounting portion 13, and inside the cylindrical closure main body 1 made of a split sleeve as shown in FIG. In the closure main body 1, the movement of the tape core wire and the drop core wire is preferably separated by the wiring processing guide.

The drop cable d, to debit branch lines by drop cord of d _1, when described in Example closure 1 with an end surface plate 2 which is fitted at both ends, via a spacer to the end face plate 2, main trunk line The cable A is penetrated and fixed by the cable gripping tool 3, and a cable tension member is connected to the cable gripping tool 3. The tape core wire branched from the main cable A is branched into a main core wire a and a lead-through core wire, and the drawn-down core wire passes through the connection portion of the connector C and passes through the termination board 11. It is inserted into the splitter tray 7 and the drop termination tray 6 and used by wiring connection.

In the splitter tray 7 or the drop termination tray 6 having the above-described configuration, the drawn core wire selected from the tape core wires separated into the single core wires passes through the termination board 11 and the splitter tray 7. When entering from one of the core wire inlets 19 of the drop termination tray 6, it passes through the core wire passage and the core wire surplus length enters the core wire surplus storage portion and is processed. Then, the output core wire a ₁ is connected to the connector socket of each tray by a connector plug, and is connected to the drop cables d and d ₁ , and the necessary drop wiring can be performed.

Thus, when the optical fiber cable is pulled down to the subscriber's home, etc., each tray layer is open, and when a single fiber is inserted from one side of the core wire inlet to branch into a single fiber, When stored in the extra wire length storage part, it can be taken out to the other core wire inlet side.
In addition, when a single core wire is inserted from one side of the core wire inlet and stored in the core wire extra length storage section, it is put out to either side of both core wire inlet ports depending on how the single core wire is wound. In addition, the core wire inlet that is the same as or different from the core wire inlet that has become the inlet side can be provided as the outlet side without reducing the curvature of the core wire (without adding an overload). Accordingly, it is possible to freely select the entrance / exit side of the core wire and to facilitate the wiring of the single core wire in the optical cable closure.

  Here, the core wire introduction port is provided with a drop gripper or an elastically deformable elastic holding member such as sponge rubber in which a through hole is formed, and is pushed into the grip groove so that the core wire is held and the drop termination is performed. Enters tray 6 and exits drop termination tray 6. If the drop gripping tool or the elastic holding member is interposed in the core wire introduction port in this way, the core wire can be rubbed against the tray body or the tensile impact can be surely passed when the core wire passes through the core wire introduction port. Can be prevented.

  The splitter tray 7 and the termination trays 4, 5, and 6 are mounted so as to be sequentially stacked by being inserted into the tray mounting portion 13 in the tray storage case 12 in the closure body 1. This stacking can be fixed by the tray storage case 12 and the overlapping core wire connection storage trays can be stacked and connected without screwing or the like, so that an optical cable connection closure having a high density storage structure can be obtained (see FIG. 1).

Further, a connector fixing member 28 and a connector fixing base 29 are provided in order to fix the drop cables d and d ₁ as a vibration countermeasure in the termination board 11. The connector fixing member 28 is as shown in FIG. In addition, a receiving part 40 having a connector insertion recess 38 and a core wire insertion groove 39 is used as a part integrally formed with a connecting part 41 and a stopper piece 42 having an inverted T-shaped cross section to be engaged with the connector fixing base 29, One end of the connector C, that is, the end of the connector socket is inserted into and supported by the receiving portion 40, and the connecting portion 41 is slid into the holding groove 43 of the connector fixing base 29 by being pushed in, and is locked and fixed by the stopper piece 42. The drop cables d and d ₁ can be safely fixed.
The connector fixing base 29 has a plurality of grip grooves 43 formed at one end in a comb shape. The grip groove 43 has an implantation portion 44 for detachably mounting the connector fixing member 28. The connector fixing member 28 has an inverted T-shaped connecting portion 41 slidably inserted into the connector fixing member 28, and a mounting portion 44 is extended to the other end. It is preferable that the connector fixing member 28 is arranged opposite to the termination board 11 so that the drop cables d and d ₁ with the connector C can be securely fixed and maintained. (Fig. 16)

  Each of the stacked termination trays 4, 5, 6 and the splitter tray 7 can be individually moved forward by the tray mounting portion 13, and each layer of the drawn tray can be opened and wired at a predetermined angle and closed. The structure can be pulled back and fixed, and an arbitrary tray can be taken out without causing an influence of loss or the like on the core wire accommodated in the tray by opening / closing each tray or opening / closing each layer.

Further, when the splitter tray 7 and the termination trays 4, 5, and 6 are multi-layer trays, the identification numbers of No. are sequentially assigned to facilitate the handling of the wiring, and each tray is provided in the tray. When it is done, consideration is given to avoid deformation between the stacked trays.
In this case, a desired drop termination tray 6 can be removed from the tray mounting portion 13 from the drop termination trays 6 stacked in multiple stages, or the tray mounting portion 13 can be moved and pulled out, so that the overlapping surfaces between the trays can be drawn. It can be opened, and the inner surface side of the tray is exposed so that the operations of checking, repairing, and connecting the storage core can be easily performed.
Further, in the case of using a separated core wire, the single core wire and the drop cables d and d ₁ are connected and the tray is accommodated. However, the tape core wire introduced into the drop termination tray 6 is fixed by an elastic holding material and is No. . 1 to 4 are branched, arranged and wired in each tray, stored in the tray storage case 12, and protected in the closure main body 1 while being fixed to the tray fixing base 10.

The elastic holding member is used by selecting one having an insertion hole corresponding to the core wire diameter or the number of core wires, and the connecting portion storage portion and the core wire extra length storage portion are defined by selecting guide ribs and side walls as necessary. Alternatively, a cord holding piece or a locking claw for preventing the core wire from being lifted up is integrally formed so that the extra length of the core wire or the connector C serving as the core wire connecting portion is stored in the connector in the drop termination tray 6. part 6 can be held by pushing scheme securely grip grooves to _1, the core wire for each tray 3 is separated organize stored in the same manner each splitter trays 7 and other termination trays 5,4, from the cable insertion portion The bending of the fiber core wire is minimal, so that twisting of the fiber core can be prevented, and high reliability can be obtained with safe and high density storage.

  The position of each tray, such as splitter tray 7 or drop termination tray 6, DS / R / TD termination tray 5 and lower extension termination tray 4, which is configured to enable connector connection used in these embodiments, is changed. Wiring can be processed, so it is easy to draw only the required single core wire from the main line and return it to the main line at any closure in response to demand for light. From the multi-fiber optical fiber ribbon to the optical fiber single fiber It is possible to select one or more of the core wires and connect them to the pulling cable, and the other can be passed through and held as a single optical fiber. The extra cores required for the connection work can be stored together with the connection part by opening or taking out any drop core tray, and the empty cores need to be added by subsequent users. It can be safely used as a single core wire.

  Further, termination trays 4, 5, 6 and a splitter tray 7 provided in this embodiment are slidably provided on the tray storage case 12 via a slide base, and each tray is separated into a single core. By avoiding movement from the work space, it is easy to see the lead wire during single core separation work, wiring work can be done easily and quickly, single core wire can be safely protected, and each tray can be freely Separation, protection, and storage of single cores, such as the installation position allows the core wire to be pulled down, so that it can easily handle aerial loop wiring and the branched core wire can be returned to the main line again. Can be greatly improved.

  Further, according to this embodiment, the termination trays 4, 5, 6 and the splitter tray 7 are provided so as to be rotatable at the tray mounting portion 13, and are arranged so as to be held in the tray storage case 12 in a multiplexed state. Contributes to making the closure more compact, and integrates the connection function and drop function for each single-core wire so that each tray required for function requirements can be added and removed easily. It can be used safely for aerial or terrestrial cables, drop optical fiber cables or collective drop optical fiber cables, protecting the optical cable connections and reducing the extra length It can be housed to increase the use efficiency of the core, and to make a closure for connecting an optical cable excellent in single-core operation and work workability.

Furthermore, in the tray configurations such as the termination trays 4, 5, 6 and the splitter tray 7 according to the embodiment, the connectors can be connected, and the connection work can be performed by using all connectors including modularization in each tray. Maintenance work such as core wire storage work and connection status inspection and repair can be easily performed, and it is excellent in workability, and it is easy to organize and store and increase / decrease for each core wire by integrating the connection function and drop function for each single fiber. In addition, it is easy to add, and it is possible to provide an easy-to-handle optical cable connection closure, such as being able to store the connection part in an extremely compact manner.
In addition, each stacked tray can easily perform optical cable connection, switching, branch connection work, and recollection work without adversely affecting the transmission characteristics of the optical cable. The optical fiber cores that are opened and stored can be quickly taken out, the core wires can be easily identified, the connection parts can be readjusted and repaired easily, and the workability can be greatly improved. .

  Also, according to the combination of each tray, the use of a core wire with a connector allows the core wire to be inserted into each termination tray or connection tray when the core wire is branched or retracted. Access to the wire connection part can be simplified, management and assembly / disassembly work can be easily performed, and high density and high reliability can be obtained. In particular, it is possible to connect an empty single core wire to be connected to a drop core wire and hold the rest so that it can be sent to the lower part as an active or empty core wire. Can be used as a required single core wire for subsequent user additions, etc., and can also be used to easily protect a single core wire, and in addition, other core wires can be connected and the connection status can be checked. , Repair, confirmation, adjustment, etc. can be integrated and performed very easily.

  Furthermore, in this example, when it is necessary to switch to a tray of another function due to a carrier change or the like, by using the connector connection and the cable seal adapter, the core wire shrinkage and the core wire generated during the conventional fusion connection and mechanical splice connection are used. The extra length processing work has been eliminated so that it can be simplified.

The one use condition of the Example of this invention is shown, (a) is the longitudinal cross-sectional view, (b) is a cross-sectional view, (c) is a front view in the XX line. It is wiring system explanatory drawing of the example of FIG. It is an enlarged front view in the YY line in FIG. FIG. 1 shows a termination board used in the example of FIG. 1, (a) is a plan view of a part thereof, (b) is a front view of the use state, and (c) is a front view showing an operation state of FIG. It is. 4 (b) shows an enlarged view of a part of the connector mounting portion, (a) is a view from the arrow A, (b) is a view from the arrow B, (c) is a plan view showing the operation state thereof, (d ) Is a side view showing the operation state, and (e) is a side view showing the separation action state. 4B is an enlarged view of a part of the connector mounting portion of another example in FIG. 4B, (a) is a view as seen from the arrow A, (b) is a view as seen from the arrow B, and (c) is a plane showing the operation state. FIG. 4D is a side view showing the separation action state. 1 shows a termination tray used in the example of FIG. 1, (a) is a plan view of a drop termination tray, and (b) is a plan view of a state in which a DS / R / TD termination tray is incorporated into a lower extension termination tray. It is. 1 shows a termination tray used in the example of FIG. 1, (a) is a plan view of another use example of the drop termination tray, (b) is a plan view of another use example of the termination tray, and (c) is a plan view of the termination tray. It is a plane of a dummy socket used in the example of (a) and (b), both sides, and a bottom view. It is a top view which shows the separation state of the splitter tray used in the example of FIG. The connection tray used by the example of FIG. 1 is shown, (a) is the top view, (b) is the side view, (c) is the front view. The tray storage case used in the example of FIG. 1 is shown, (a) is the top view, (b) is the side view. 11A and 11B show the operation state of the tray mounting portion used in the example of FIG. 11, where FIG. 11A is a front view at the time of the movement operation, and FIG. 11B is a front view at the time of the storage operation. The end plate used in the example of FIG. 1 is shown, (a) is its front view, (b) is its plan view, and (c) is a side view with a part cut away. The flap used in the example of FIG. 1 is shown, (a) is a plan view of the unfolded state, (b) is a side view thereof, (c) is a bottom view thereof, and (d) is a front view thereof. The connector fixing member used in the example of FIG. 1 is shown, (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof. 1 shows a connector fixing base used in the example of FIG. 1, (a) is a plan view thereof, (b) is a side view thereof, (c) is a front view thereof, and (d) is a longitudinal sectional view taken along the line ZZ. It is.

Explanation of symbols

A cable B splitter module C connector a Shukokorosen a ₁ output cord b ribbon c DS cable d, _{d 1} drop cable 1 closure body 2 end plates 3 cable TM gripper 4,5,6, termination tray 4 ₁ , 5 ₁ , 6 ₁ Connector storage section 4 ₂ , 5 ₂ , 6 ₂ Extra conductor storage section 4 ₃ , 5 ₃ , 6 ₃ Pivot section 7 Splitter tray 8 Center tray 9 Connection tray 9 Adapter 10 Tray fixed base DESCRIPTION OF SYMBOLS 11 Termination board 12 Tray storage case 13 Tray attaching part 13 ₁ Slide base 14 Connector attaching part 14 ₁ Center tray attaching part 15 Round-shaped guide 15 ₁ Support shaft 15 ₂ Bearing part 16 Connector socket 17 Locking piece 18 Grasping tool base 19 Core inlet 20 Cable adapter 21, 22 Cable insertion path 23 Nipping frame piece 24 Id rib 25 Fitting hole 26 Locking hole 27 Guide groove 28 Connector fixing member 29 Connector fixing base 30 Sleeve release holder 31 Ring 32 Hook 33 Flap 34 Core wire insertion groove 35 Locking part 36 Projection 37 Operation piece 38 Connector insertion recess 38 39 Core wire insertion groove 40 Receiving portion 41 Connecting portion 42 Stopper piece 43 Holding groove 44 Implanted portion 45 Mounting portion 46 Dummy socket

Claims (9)

A termination tray and a splitter tray each having a connector housing portion for housing a connector made up of a socket and a plug as a connecting portion of the optical cable core wire, and a core wire extra length housing portion for accommodating the extra length of the core wire are respectively disposed in the closure body. An optical cable connection closure housed in a tape, wherein a termination board provided with a plurality of connectors is detachable, and is connected via a splitter module in a splitter tray via the termination board A plurality of termination trays that are connected to a core wire, a DS / R / TD cable, and a drop cable so that connectors can be connected to each other, and organize the connectors and extra-core portions of each connection portion, and And / or a splitter tray provided on the tray mounting portion slidable toward the outside of the closure body provided on the closure body. After the plurality of termination trays and / or splitter trays are pulled out of the closure body together with the tray mounting portion, the termination trays and / or An optical cable connection closure characterized in that the splitter tray can be tilted and held in a multiplexed state in which the splitter tray is rotated and shifted stepwise .   2. The optical cable connection closure according to claim 1, wherein the termination board is made of a U-shaped member having a curved side surface, and the rounded guide is pivoted about the support shaft along the curved side surface. A center tray mounting portion is provided on the upper surface portion, a connector mounting portion is provided on the lower surface portion, and the single core wire separated from the core wire introduced into the center tray fixed to the center tray mounting portion is the round shape. An optical cable connection closure characterized in that a connector connected to a single core wire is detachably attached to the connector mounting portion while being held downward along a guide.   3. The optical cable connection closure according to claim 1 or 2, wherein the connector mounting portion of the termination board is configured so that a connector socket for detachably mounting the connector can be removably disposed, and the connector socket is provided in the connector socket. An optical cable connection closure comprising a connector fixing member for fixing a connector.   The optical cable connection closure according to claim 2 or 3, wherein the splitter tray includes a tray that is detachably provided by selecting a splitter module having a plurality of connectors on both the left and right sides of the tray, and a core wire. It has a storage part that stores the extra length, and has a structure in which a tray formed by distributing the core wire lead-out part to the left and right and a tray in two upper and lower layers are connected by a hinge part so as to be opened and closed. Closure for optical cable connection.   5. The optical cable connection closure according to claim 3, wherein the splitter tray is provided with a plug on a core wire connected to the termination board, and a plurality of core wires connected to each termination tray. A closure for connecting an optical cable, characterized in that the splitter module is provided with a splitter module provided with a socket to enable connector connection.   6. The optical cable connection closure according to claim 3, 4 or 5, wherein the termination tray is provided with a plurality of connector storage portions divided into left and right, and the core wire from the splitter tray is fixed by the introduction portion. A drop fixing member is provided as necessary, and a lower extension termination tray, a DS / R / TD termination tray, and a drop termination tray are pivotally attached to the tray mounting portion by pivots, respectively. An optical cable connection closure characterized by being deployed in a state of being stacked on a fixed base.   The optical cable connection closure according to claim 3, 4, 5, or 6, wherein the center tray includes a plurality of flap attachment holes, and a single core separated from the core wire in the flap attachment holes. A closure for connecting an optical cable, characterized in that a single-core cable can be protected and identified by providing a detachable flap capable of binding the cables.   8. A closure for connecting an optical cable according to claim 4, 5, 6, or 7, wherein a connecting portion storing portion for storing a connecting portion of the optical cable core, and a core wire extra length for storing a core wire extra length. Provided with a connection tray that has a long storage section and enables connector connection, and the tray mounting section is slidably arranged in the tray storage section with multiple teeth holding the termination tray in a horizontal state An optical cable connection closure characterized in that the termination tray can be slid back and forth.   The optical fiber connection closure according to claim 4, claim 5, claim 7, or claim 8, wherein the end plate provided in the closure body has an extension side wall portion having a cable insertion passage for inserting the optical cable A. An optical cable characterized in that a seal portion with a drop cable insertion hole is formed in a thin structure from the surface of the seal portion to the drop cable insertion hole, and a cable adapter that can be opened and closed in half is detachably attached by a holding frame piece Connection closure.

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