JP4455414B2 - 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. It is used to connect the optical cable, protects the optical cable connection part, accommodates the extra length of the core, and does not affect other cores when dropping the optical cable and connecting the branch connection. The vacant core can be used as a necessary single core for subsequent user participation, increasing the efficiency of use of the core, easily responding to fluctuations in demand, and easy handling during connection wiring work The present invention relates to a closure for connecting an optical cable 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 a closure made of a sleeve, and the connection part and the extra length of the cable core are stored. Closures with extra length storage 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 every seven cores 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 makes it difficult to operate single cores and is not fully satisfied with the efficient and economical use of optical access system facilities, especially as the cable density increases, the number of cores increases, or the transmission speed increases. However, there is a problem that it is difficult to perform work and wiring arrangement accompanying connection branching.
Also, in the branching work 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 were problems such as the inability to use access facilities efficiently and economically.

  The present invention has been made in view of these conventional circumstances, and uses a high-bend reinforced single-core optical cable, which affects other core wires in the case of a drop wiring and branch connection wiring from the optical cable. Single-core operation is possible without using the unoccupied core wire as a necessary single-core wire for subsequent user participation, etc., improving the efficiency of use of the core wire, and connecting and storing the core wire can be connected to a connector including modularization. In addition to greatly improving workability including maintenance work such as connection work, core wire storage work, and connection status inspection and repair as a configuration, it is possible to protect single cores and effectively protect optical cables. Optical access services can be provided quickly and inexpensively, such as by extending the lower part of the core wire and aerial loop wiring, and returning the branched core wire to the main line again. In addition, the trays that have different functions for storing the branch connection wiring and its connector connection part can be rotated and attached in a detachable manner. The purpose is to provide an easy-to-handle optical cable connection closure for aerial or ground mounting that can be expanded and removed.

In order to solve the above-described problems, in the present invention, a connection tray for storing a connection portion between a core wire of an optical cable and a drop cable, a connection portion between a core wire of the optical cable and a patch core wire connected to the drop tray, Built-in splitter module section for storing the connection section between the splitter module section and the optical cable core, the connection section between the splitter module section and the drop cable, and the connection section between the splitter module section and the patch core cable connected to the drop tray A splitter tray and a drop tray for storing a connection portion between the connection tray or the patch core wire connected to the splitter tray and the DS cable, and each of the connection tray, the splitter tray, and the drop tray is a tray. Arranged in the closure body so that it can be displaced in the state of being stacked on the fixed base. An optical cable connection closure, wherein the connection tray includes an adapter that enables connector connection as a connection portion, an adapter storage portion provided with a plurality of the adapters, and a core wire surplus length that accommodates a cord surplus length A splitter tray having a structure including a storage portion, and the splitter tray having a configuration in which a splitter module portion having a plurality of adapters configured to allow connector connection in the connector connection portion is detachably disposed. The drop tray further includes a connector connection portion that enables connector connection, a connection portion storage portion that stores a plurality of the connector connection portions, and a core wire extra length storage portion that stores the extra length of the core wire. A drop tray having the above-described configuration, and the connection tray, the splitter tray, and the cable led into and out of the drop tray. Connect the connector plug to the tip of the wire, the tip of the drop cable, both ends of the patch core, and the tip of the DS cable, and connect all of these optical cable, drop cable, patch core, and DS cable wiring to the connector. It is something that is done by .

  The present invention uses a high-bend reinforced single-core optical cable, and the optical cable core connection and storage are modularized so that all connectors can be connected and stored, and maintenance work such as inspection and repair of the connection status can be performed. The workability has been greatly simplified, including the connection tray, drop tray, and splitter tray, which have different functions for storing the drop wiring and branch connection wiring and the connector connection section, by the hinge section. A plurality of tray fixing bases are provided so as to be rotatable and detachable so that each tray required for a function request can be easily added and removed.

  In addition, in this optical cable connection closure, when it is necessary to switch to a tray of another function due to a carrier change or the like, this occurred at the time of conventional fusion connection and mechanical splice connection by using a connector connection by an adapter and a cable seal adapter. It is possible to simplify the work by eliminating the work of processing the extra length of the core wire accompanying the shortening of the core wire.

  Further, the optical cable connection closure of the present invention is characterized in that the connection tray, the splitter tray, and the drop tray are shifted in a stepped manner on a tray fixing storage plate having a tray receiving portion rotatably provided on the frame. The drop tray is arranged to be held in an inclined state under multiple conditions, and the drop tray is configured to be fixed and maintained on the tray fixing storage plate by a locking portion including a locking piece and a locking receiving portion. .

Furthermore, in the present invention, the connecting tray includes a plurality of adapter mounting portions in the longitudinal direction of the core wire, and the connector connecting portion can be fixed at an arbitrary position in consideration of connector termination failure. possible, further connector the occurrence of tension and bending of the cord to form a guide for suppressing stopper structure at the time of desorption, in order to pull down to the subscriber to request the SS service (leased line / B FLET'S basic), optical cable of mind It stores and protects the connector connection portion and the extra length of the core wire connected to the wire core and the patch core wire connected to the drop cable or drop tray . 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. The core wire introduction port is an individual passage structure for each core wire, and is provided with a guide having a stopper structure that suppresses the occurrence of pulling and bending of the core wire.

Further, in the present invention, the splitter tray (SP tray) provided in the optical cable connection closure is provided with a single-core cable, a splitter (SP) input line, and a splitter (SP) output for pulling down to a subscriber who requests PON service. This connector is used to store and protect the connector connection part and the extra length of the core wire and the splitter module part of the cable core connected to the drop cable or drop tray, and the splitter module part equipped with multiple connectors is installed in the tray. The grip holder base for fixing the drop gripper is provided at both ends of the tray so that the drop cable can be pulled out from either the left or right side. It can be divided and fixed to the other, and the other heart when attaching and detaching the core wire The occurrence of the cord tension and bending to form a guide for suppressing stopper structure as a separate channel structure influence each cord left and right cord inlet tray to eliminate to be set to secure configuration.

  In the optical cable connection closure according to the present invention, the drop tray (DS tray) is a patch core wire and a DS cable core that are output side core wires from the connection tray (SS tray) and the splitter tray (SP tray). It is intended to store and protect the connector connection part with the wire and the extra length of the core wire, and it is a connector fixing structure that can be expanded each time depending on the subscriber, with a connector termination failure surplus length absorption structure on the DS core wire side, A safety structure is provided by forming a guide of a stopper structure so that the core wire can be distributed in the direction of the left and right connectors, and so that the extra length of the core wire is not affected when the connector on the DS core wire side is pulled out. Then, the drop tray is pivotable by a hinge portion, and is detachably provided on the tray fixing base to form a core wire extra length storage portion that absorbs a cord extra length difference caused by the number of connection of each core wire, Furthermore, a stopper structure guide is provided that suppresses the occurrence of pulling or bending of the core wire when the connector is attached or detached.

  In the present invention, a work that can adjust the open state of the sleeve that is spread without dismounting the sleeve by disposing a sleeve release holder on the closure main body that is formed of a pair of sleeves that are connected to each other through a hinge portion so as to be able to expand. A band-type sleeve opening retainer that can be continuously adjusted to adjust the degree of opening is maintained, and a slit is inserted into the cable inlet for inserting various cables into the end plate provided in the closure body. And a cable adapter provided with a plurality of core insertion passages with a thin-film seal piece is detachably attached and used as an end face seal with a waterproof function when the cable is housed in the closure body. It is characterized by waterproofing.

The closure for connecting optical cables according to the present invention has a step-like configuration in which the optical fiber cable cores having different functions for protecting and storing the optical fiber cable connection parts and the connection surplus length parts are stepped on the tray fixing base through the tray fixing storage plate having the tray receiving part. It is arranged so as to be held in an inclined or horizontal state in a multiplex state, and each tray can be fixed and maintained by a locking portion comprising a locking piece and a locking receiving portion, and a hinge Because it is provided with a plurality of tray mounting portions that can be rotated and detachable by the portion, and is fixed to a frame provided in the closure body, and is disposed so as to be displaceable in a state in which the plurality of drop trays are stacked. Since each tray can be repositioned and processed for wiring, only necessary single-core wires can be withdrawn from the main line or returned to the main line at any closure for light demand. Easily it can be made.
That is, the optical fiber ribbon made of multi-fiber optical fiber ribbons is separated into single optical fibers, and only one or more optical fibers are selected and connected to the cable. It becomes possible to hold it so that it can be sent to the bottom as a line. Further, the extra long core wire necessary for the connection work is stored together with the connection portion by opening or removing an optional drop tray. Unoccupied cores can then be used as necessary single cores for subsequent users, and other tasks such as connecting other cores, checking connection status, repairing, checking and adjusting are integrated. And can be done very easily.

  In addition, the drop tray is arranged obliquely so as to be displaceable in multiple stages, and is multi-layered in connection units. The core wire connection portion is not fixed, and the extra length of the core wire also secures a radius of curvature. Therefore, it can be stored with a degree of freedom in absorbing the extra length of the core wire, and used in a form that does not adversely affect the transmission characteristics.

The present invention relates to an adapter that enables connector connection to be a connection portion provided in a closure body, an adapter storage portion provided with a plurality of the adapters, and a core wire surplus length that accommodates a cord surplus length And a splitter tray having a configuration in which a splitter module portion having a configuration in which a plurality of adapters capable of connector connection are provided in the connector connection portion is detachably provided. In addition, the drop tray includes a connector connection portion that enables connector connection, a connection portion storage portion that stores a plurality of connector connection portions, and a core wire extra length storage portion that stores a core wire extra length. and with a drop tray configuration, said connecting tray adapter, the previous SL connector plug for connecting to the connector connecting portion of the drop tray The Connect connection tray and said drop tray, also equipped with a connector plug for connecting to the connector connecting portion of the adapter and the drop tray in the splitter module section to the terminal by a patch cord with the end By connecting the splitter tray and the drop tray with the patch core wire so that each tray can be connected to the connector, other core wires are affected when the wiring is dropped from the optical cable and the branch connection wiring. Single-core operation is possible without using the unoccupied core wire as a necessary single-core wire for subsequent user participation, etc., improving the efficiency of use of the core wire, and connecting and storing the core wire can be connected to a connector including modularization. In addition to greatly improving the workability, including connection work, core wire storage work, and maintenance work such as inspection and repair of connection status, The optical fiber can be used effectively, can be used for extension of the lower part of the optical fiber and the aerial loop wiring, and the branched optical fiber can be returned to the main line again. Optical access services such as optical access services can be provided quickly and inexpensively, and trays with different functions for storing drop wirings and branch connection wirings and their connector connection parts can be rotated and detachably provided on the tray fixing base. As a result, each tray required for the function request can be easily added and removed, and the core wire connection work is remarkably simple and good, and the cable switching and wiring process can be facilitated, so that the closure can be easily handled.

In the optical cable connection closure according to the present invention, the patch core wire for switching and connecting the trays is provided with a connector plug connected to the adapter, and the trays can be connected to the connector. Therefore, a high-bend reinforced type single-core optical cable can be used, and when pulling wiring from the optical cable and branch connection wiring, single-core operation can be performed without affecting other core cables. As a single-core wire required for the participation of users, etc. , the efficiency of the use of the core wire is increased, and the connection and storage of the core wire can be connected to a connector, including modularization. Workability including maintenance work such as inspection and repair can be greatly improved.

Further, according to the present invention, the connection tray configured to enable connector connection includes adapters for selecting and connecting a plurality of adapter mounting portions in the longitudinal direction of the core wire, at the occurrence of cord tension and bending it with a guide suppressing stopper structure, easy to see that the core wire at the time of single core separation operation, it is possible to quickly process to facilitate the wiring work, also single The core wire can be safely protected, the core wire shortened when the connector termination of the core wire fails, and the core wire can be pulled down or switched, so the core wire can be connected and stored. Helps simplify work, and demonstrates excellent functions for single-core operation and storage.

  In addition, a splitter tray with a configuration that allows connector connection, a splitter module section with multiple connectors is detachably mounted in the tray by a mounting section, and further, pulling and bending of the core wire is suppressed when the connector is detached. By providing the stopper structure guide, the splitter module portion can be removed and attached separately from the tray so that it can be easily connected and updated and added to each tray.

  Furthermore, in the optical cable connection closure according to the present invention, the drop tray configured to allow connector connection by the connector connection portion has an extra length storage portion for storing the extra length of the core wire in the tray. Since it can be managed and stored, it has high reliability in storing the extra length of the core without adversely affecting the transmission characteristics, and it is possible to switch between multiple stacked trays, making it safe and workable as a closure. It can be greatly improved.

Further, in the present invention, the closure body 10 is constituted by a pair of sleeves composed of a case body and a lid for housing the tray, and the sleeve on the lid side is connected to the sleeve on the side of the case body via the hinge portion. In addition, the sleeve opening holder can be arranged so that it can be freely expanded and the open state of the sleeve on the lid side can be adjusted, and further, from the slit and the thin film for inserting various cables into the end face plate provided in the closure body By detachably attaching a cable adapter with multiple core insertion passages with a sealing piece, it is possible to adjust the degree of opening without removing the sleeve during work, so that the work side open state can be maintained optimally and workability In addition, the closure body is housed in the cable inlet to insert various cables of the end plate provided on the closure body. A cable seal adapter with a plurality of core insertion paths with slits and seal pieces made of thin film is used as an end face seal with a waterproof function when the cable is attached. Increased safety.

The embodiment of the present invention will be described with reference to the drawings. In the closure main body 10 shown in FIGS. 1 to 4, an optical cable A serving as a main cable is introduced and led out through an end face plate 11 and is gripped by a cable gripper 12. A plurality of connection trays 1 for arranging the connection portion between the optical fiber A and the drop cable d connected to the core wire a and the extra length of the core wire are provided. The connection tray 1 includes a plurality of adapters 6 that serve as connection portions of the optical fiber A, the adapter attachment portion 7 that accommodates the adapter 6, and the extra wire length storage portion that stores the extra length of the core wire. The connector tray 1 includes a splitter module section 8 including a splitter module section 8 having a plurality of adapters 9 and a connector serving as a connection section between the core wire a and the drop cable d. A plurality of drop trays 3 each including a connecting portion 34 and a core wire extra length storage portion 30 for storing a core wire extra length are disposed in the closure body 10 so as to be freely displaceable in a state of being stacked on the tray fixing base 5. Therefore, if necessary, an optical cable connection closure is provided by attaching an FO (fan-out) tray 4 for branching the optical cable into individual cores and using the single core .

  The connection tray 1 has a configuration in which a plurality of adapters 6 for connecting a patch core wire c having a connector plug 24 and a connector-terminated drop cable d to the terminal are provided in the adapter mounting portion 7 to enable connector connection. The splitter tray 2 is provided with one stage, and the splitter tray 2 is provided with a splitter module section 8 provided with a plurality of adapters 9 for connecting the patch core wire c and the connector-terminated drop cable d. The drop tray 3 is provided with four stages of the splitter tray 2 that can be connected, and the drop tray 3 is provided with a plurality of connector connecting portions 34 that connect the patch cores c to enable connector connection. The tray 3 is arranged in two stages, and each tray is rotated by its own hinge portion 13 to the tray mounting portion 13. In a state stacked plurality is provided, and was displaced freely optical cable connecting closure configuration in which obliquely to the closure body 10. For example, the connection tray 1, the splitter tray 2, and the drop tray 3 are tilted and held in a multiplex state shifted in a stepped manner in a tray fixing storage portion 14 that is rotatably provided on the fixed base 5. Deployed.

Further, the connection tray 1 can accommodate a maximum of 4 cores and includes adapter mounting portions 7 of the adapter 6 at a plurality of locations in the longitudinal direction of the core wire. Can be fixed at an arbitrary position, and a guide 15 having a stopper structure that suppresses the occurrence of pulling or bending of the core wire when the connector is attached or detached, for example, a guide 15 in a form in which the adapter 6 can be fitted as shown in FIG. To connect the connector between the optical fiber core a and the drop cable d and the patch connected to the core a and the drop tray 3 in order to withdraw to the subscriber who desires the SS service (dedicated line B FLET'S Basic). The connector connecting portion with the core wire c is stored, and the core wire surplus length is protected by the core wire surplus length storing portion 18. In addition, a gripping tool base 16 for fixing the drop gripping tool is provided at both ends of the tray so that the drop cable can be pulled out from either the left or right side, and in order to eliminate the influence on other cores when attaching or detaching the cores, The core wire introduction port 17 is configured as a rugged individual passage structure for each core wire, so that the core wire is prevented from being pulled or bent. [Fig. 5]

The splitter tray 2 provided in the optical cable connection closure is, for example, an eight-branch splitter module tray, and is provided with a core a of the optical cable A, a splitter module input line, The connector connecting portion, the connector connecting portion between the splitter module output line and the drop cable d, and the connector connecting portion between the splitter module output line and the patch core wire c connected to the drop tray 3 are housed and protected. A splitter module portion 8 having a connector connecting portion 20 provided with an adapter 9 is detachably provided in a tray by an attachment portion 21 , for example, a claw portion and a rib, and a gripping tool base 22 for fixing a drop gripping tool is provided. Provided on both ends of the tray, drop cave from either side The connector d of the SP input line can be divided and fixed to the left and right, and the right and left core wire inlets 23 of the tray can be removed in order to eliminate the influence on other core wires when the core wire is attached / detached. A guide 21 _{1 having a} stopper structure that suppresses the occurrence of pulling and bending of the core wire as an individual passage structure for each core wire, for example, a guide 21 ₁ configured to lock the splitter module portion 8 as shown in FIGS. Formed and made a safe configuration. [FIGS. 6 and 7]

Further, the drop tray 3 is a connector provided with a plurality of adapters for connecting the patch core wire c, which is the outgoing core wire from the connection tray 1 and the splitter tray 2, and the DS cable B core wire. be one that housing protects the connection portions 34 and the core wire excess length, each time, a connector fixing structure that allows expansion, the connection fails excess length absorbing structure of DS core side, lateral connector direction by the subscriber corresponding A guide 31 of a stopper structure, for example, as shown in FIG. 8, is fitted with a connector connecting portion 34 so that the core wire can be distributed to the DS core wire side so as not to affect the extra length of the core wire when the DS side wire side connector is pulled out. A safe configuration is provided with a guide 31 having a deformable shape.
The drop tray 3 is pivotable by a hinge portion and is detachably provided on the tray fixing base 5 to form a core wire extra length storage portion 30 for storing the extra length of each core wire, A gripping tool base 32 for fixing the DS gripping tool is provided at both ends of the tray so that the DS cable B can be pulled out from either the left or right side, and the patch core wire c to be connected can be divided and fixed to the left and right. In addition, in order to eliminate the influence on other cores when attaching and detaching the core wire, a guide with a stopper structure having a concave and convex individual passage structure for each core wire is formed at the left and right core wire introduction ports 33 of the tray, did. [Fig. 8]

In order to operate in the single-core separated ribbon by installing a closure on the light cable route using ribbons, ribbon optical cable taken along the closure center point and split Ri placed between the core wire FO (fan-out) tray 4 formed with a connecting portion and a cord extra length storing portion, for example, a connecting portion storing portion 40 capable of holding a connecting portion b and capable of fixing a maximum of eight core connections on one side as shown in FIG. A configuration in which the core wire extra length storage portion 41 for absorbing the core wire extra length is formed so that the tape core wire and the interrupting core wire can be drawn out from either the left or right side and can be distributed and fixed to the IN side or the OUT side. And Note that a core wire pressing piece 43 is detachably provided in the core wire lead-in / out section 42 for guiding and guiding the core wire so as to hold the core wire accurately.
The FO tray 4 is used to store and protect the connecting portion of the tape core wire and the insertion core wire cut at the center point of the closure and the extra long core wire. It is possible to store the extra length of the main cable side tape core wire in the tray, and it is a symmetrical form so that this tray can be deployed and used on the upper and lower sides, and the outlet for the 4-fiber tape is used as an individual route By dividing, it is used as one that can be easily identified. The FO tray 4 is slidably provided on the closure body 10 via a slide base, and can be pulled out to the outside of the sleeve when the sleeve is expanded.

  Each tray is a molded product formed integrally or individually with a synthetic resin, has a substantially rectangular outer shape, and has an inner surface formed in the same or similar shape. Each tray is mounted on the tray fixing base 5. A plurality of trays or tray mounting portions 13 are attached by hinges to be fixed together in the closure body 10.

The connection tray 1, the splitter tray 2, and the drop tray 3 are arranged so as to be inclined and held in a multiplex state shifted in a stepped manner on a tray fixing storage plate 14 rotatably provided on the frame. The drop tray 3 is detachably provided on a tray fixing storage plate 14 that also serves as a tray stopper by a locking portion including a locking piece and a locking receiving portion. (Figures 2-4)
The tray fixed housing plate 14 includes a tray receiving portion 14 ₁ which has shifted stepwise, and a hook portion that can be pivoted rotatably on a support shaft (not shown), attached to said tray fixing base 5 The free ends of the connection tray 1, the splitter tray 2 and the drop tray 3 are received and can be opened or fixedly supported in the sleeve of the closure body 10.

The optical cable connecting closure of Figure 1 installed in ribbon cable route, the closure wire in core wire a separated in Kuroji the turbocharger to operate single-core, the connecting tray 1 and as shown in FIG. 10 The splitter tray 2 and the drop tray 3 can be connected by a patch core wire c having a connector plug 24 at the terminal, a core wire a, a drop cable d, and a DS cable B so that the connector can be connected. optical cable cores connected as configuration, housed modularized, there as totally connectorized.

Also, the closure body 10, a configuration in which by a pair of sleeves that can be split is continuously at the hinge portion 10 ₁ (case body and the lid), the sleeve open retainer 25 can adjust the opening state of the sleeve to be diverging, e.g. As shown in FIG. 11, a band having a locking portion of the ring 26 and the hook 27 at the terminal is connected through the connecting piece 28 to adjust the length, and the ring 26 and the hook 27 are provided outside the sleeve. It is preferable that the closure main body 10 is tightened by being engaged with the engaging portion so that the internal sealing performance of the closure can be maintained. In this case, if this sleeve opening holding tool 25 is used, the open state on the working side can be maintained without removing the sleeve during the work, the opening degree can be continuously adjusted, and no obstructing member can be provided on the working side. Used in a form that is easy to handle.

  Furthermore, it is preferable that the cable seal adapter 35 is detachably attached to the end face plates 11 provided on both end faces of the closure body 10. The cable seal adapter 35 has a single DS cable B insertion hole at its center as shown in FIG. 12, and a core having slits 36 for inserting various cables radially on the outer peripheral side and a seal piece 37 made of a thin film. A cable having a wire insertion path, which is attached to and used for a waterproof end face seal in a cable housed in the closure main body 10, and a cable to be inserted into the insertion hole of the DS cable B and a cable to be inserted into the slit 36. It has a waterproof structure in which the inner surface of the insertion hole and the slit surface are in close contact with the outer periphery of the wire, and has a lotus structure for waterproofing the eight drop cables d and the one DS cable B. In this case, a slit-added structure in the longitudinal direction that allows a cable with an optional connector to be attached and detached, the longitudinal center is a small-diameter shaft shape, and a seal piece 37 made of a thin film is attached to each cable introduction port to the seal piece 37 In addition, it is preferable to secure safety by using a waterproof structure constituted by the extended slit 36.

  Further, a tray mounting portion 13 for rotatably mounting the connection tray 1, the splitter tray 2 and the drop tray 3 is fixed to the tray fixing base 5 and is a hinge pin provided on each tray. Recessed receiving part into which the shaft is inserted, for example, a guide groove that opens outward is formed, and the guide groove can be inserted into and removed from the narrow section formed in the pin shaft, and is attached to and detached from the tray mounting part 13 It is preferable that the pin shaft is freely disposed and supported by the wide section of the pin shaft, and that the pin shaft can be removed or inserted at a predetermined position of the narrow cross section in the opening.

  In order to make the connecting tray 1, the plurality of splitter trays 2, and the drop tray 3 detachable from the tray mounting portion 13, they are stored separately or stacked in layers stacked alternately in the front-rear direction. It may be used as a tray. In this case, the mounting arm 29 having an engaging recess that engages with the pin shaft protruding from the tray main body may be provided at a position symmetrical to both ends of the tray mounting portion 13. It is also possible to adopt a configuration that can be detachably mounted in either direction, and further, the core wire connection work can be simplified by moving each tray in the closure main body 10 by the slider (not shown).

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 corresponding to the core wire diameter or the number of core wires is selected and used.
Further, guide ribs and side walls may be selected and divided in the connecting portion storage portion, splitter storage portion and core wire extra length storage portion as necessary, or the core wire presser piece or the engagement member for preventing the core wire from floating. Make sure that the pawls are integrally formed so that the extra length of the core wire and the connector that becomes the core wire connection portion can be securely held in each tray, or the connection portion storage portion or the core wire extra length storage portion Each tray is arranged and stored, and it is considered that the bending of the fiber core wire from the cable insertion portion is extremely small, so that twisting at the time of storing the core wire can be prevented, and high reliability can be obtained with safe and high density storage.

An example of the closure main body 10 provided with end face plates 11 fitted to both end wall fitting portions of the sleeve of the closure main body 10 will be described. The main optical fiber cable A is connected to the end face plate 11 via a spacer (not shown). The support wire is penetrated and fixed to the cable gripper 12 with the support wire gripper, and the tension member of the cable is connected to the cable gripper 12. Also, core wire a derived from main trunk line serving the optical cable A is connected tray 1, is derived from the end plate 11 as splitter tray 2 and cables for debits are processed to the drop tray 3 drop cable d Wired as (Fig. 1)

In the drop tray 3, it is preferable to secure a stripping length, a stacked individual storage type, and a high-density storage form by a multi-core drop tray, and a connection failure surplus length is stored 100 mm or more. The method should be adopted. Further, it is preferable to drop and drop the drop cable by inserting and storing the single core wire and the drop core wire, the connecting portion and the extra length core wire in the required drop tray 3.
When performing the splitter processing, the optical cable core, the splitter, the splitter and the drop cable can be connected in the splitter tray 2 and the drop tray 3, and the processing until the splitter outgoing line is performed in each tray. It is desirable to respond.
In any case, the splitter tray 2 and the drop tray 3 are rotatably held by a multi-stage tray mounting portion 13, and as shown in FIG. In the closure main body 10, it is preferable that the movement of the tape core wire and the drop core wire is separated by the wiring processing guide.

To debiting branch lines by drop core of the drop cable, the described embodiment of the closure body 10 with an end face plate 11 which is fitted at both ends, via a spacer to the end face plate 11, the main trunk line optical cable A Is penetrated and fixed by the cable gripping tool 12, and a cable tension member is connected to the cable gripping tool 12. The tape core wire branched from the optical cable A of the main trunk line is pulled through the core wire a and branched into the core wire, and the drawn core wire is inserted into the drop tray 3 via the wiring processing guide, and the connector or the like Are connected to the splitter tray 2 or the drop tray 3 via the connecting portion. Further, the splitter tray 2 or the drop tray 3 has a structure provided in the vicinity of the core wire inlet through the tension member mounting portion, so that the single core wire and the drop cable can be easily protected. Good.

In this case, each of the connection tray 1, the splitter tray 2, and the drop tray 3 is connected to the optical cable A and the drop cable d as shown in FIG. That is, the connector connects the connection tray 1 and a drop tray 3 a connector plug 24 for connecting to the connector connecting portion 34 of the adapter 6 and the drop tray 3 of the connection tray 1 by a patch cord c with the terminal In addition, the splitter tray 2 and the drop tray 3 are connected to each other by the patch core wire c provided at the terminal with the adapter 9 in the splitter module portion 8 and the connector plug 24 connected to the connector connection portion 34 of the drop tray 3. The connector can be connected.
With the above configuration, the core wire a of the optical cable A is connected to the drop cable c in the connection tray 1 and pulled down to the subscriber's house, and connected to the drop cable d in the splitter tray 2 and pulled down to each subscriber's house. It is. Further, the drop tray 3 is connected to the core of the DS cable B and pulled down to the subscriber's house. The DS cable B is a bundle of single core wires for withdrawal, and is a wiring cable for routing to a group of subscribers in a predetermined area.

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 extra length storage part, it should be put out on either side of both core wire inlets depending on how the core wire is wound. You can also.
As described above, the single core wire or the drop cable d can be inserted into or removed from the drop tray 3 from any one of the core wire inlets, and without reducing the curvature of the core wire (overloading) Without adding), the same or different core inlet as the inlet side can be provided as the outlet side. 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 an elastically deformable elastic holding member such as sponge rubber in which a through hole is formed, and the core wire enters the drop tray 3 through the through hole, and Go out of the drop tray 3. If the elastic holding member is interposed in the core wire introduction port in this way, when the core wire passes through the core wire introduction port, it is possible to reliably prevent the core wire from rubbing against the tray body or a tensile impact. it can.

  The splitter tray 2 and the drop tray 3 are mounted so as to be inserted into the tray mounting portion 13 on the tray fixing base 5 in the closure body 10 and stacked one after another. This stacking can be fixed by the tray fixing and storing plate 14, and the overlapping core wire connecting and storing trays can be stacked and connected without screwing or the like, so that an optical cable connecting closure having a high density storing structure can be obtained. (See Figure 1)

  In the case of using a separate core wire, the single core wire a and the drop cable d are connected to the tray after being connected. The tape core wire introduced into the drop tray 3 is fixed by an elastic holding member. No. It is branched into 1 to 4 and is used by being protected in the closure main body 10 in a state in which it is arranged and stored in each tray and is fixed to the gripper base 32.

  Each of the stacked splitter trays 2 and drop trays 3 can be individually pivoted forward from the tray mounting portion 13, and each layer of the drawn trays can be opened and wired at a predetermined angle, and then fixed. As a structure that can be used, an arbitrary tray can be taken out without causing an influence such as a loss on the core wire accommodated in the tray by opening / closing each tray or opening / closing each layer.

Also, when the said splitter tray 2 and the drop tray 3 when the multilayer tray, Yes and easily handled sequentially attached by wire identification number No code, yet each tray, which is furnished in the tray Consideration is made so as not to deform between trays stacked on each other.

  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, the core wire presser piece or the locking claw that prevents the core wire from floating may be integrally formed so that the extra length of the core wire or the connector connection portion that becomes the core wire connection portion is securely placed in the drop tray 3. It is possible to hold, separate and store the core wires for each splitter tray 2 and drop tray 3, and the bending of the fiber core wire from the cable insertion part is minimal, preventing twisting when storing the core wire. Ensure high reliability with high density storage.

  In this case, if the locking projections of the desired drop tray 3 are removed from the tray mounting portion 13 from the trays 3 that are stacked in a multi-stage with the tray fixing storage plate 14 removed, the tray mounting portion 13 can be pulled out. The overlapping surface between the trays 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.

  Each tray having a configuration capable of connector connection used in these embodiments, for example, the connection tray 1 and the splitter tray 2 or the drop tray 3 and the FO tray 4 can be subjected to wiring processing by changing the position. It is easy to draw only the required single core wire from the main line or return to the main line with any closure, and separates the multi-core optical fiber tape from the single fiber to the single fiber. Alternatively, it is possible to select more than that and connect it to the pull-down cable, and hold the others so that they can be fed to the lower part as a single optical fiber. The extra cores required for connection work can be stored together with the connection part by opening or removing the optional drop core tray 3, and the empty cores need to be joined by subsequent users. It can be used safely as a simple single-core wire.

  Further, the FO tray 4 attached in this embodiment is slidably provided on the frame via a slide base, and the FO tray 4 is prevented from moving from the single-core separation work space, so that the single core It is easy to see the conductors during separation work, the wiring work can be done easily and quickly, the single cores can be safely protected, and each tray can be freely mounted and the cores can be pulled down. Therefore, it is possible to easily cope with the aerial loop wiring, and it is possible to return the branched core wire to the main line again, thereby greatly improving the separation, protection, and storage operations of the single core.

  Further, according to this embodiment, the connection tray 1 and the splitter tray 2 or the drop tray 3 are in a multiplex state in which the tray fixing storage plate 14 rotatably provided on the tray mounting portion 13 is shifted stepwise. Since the drop tray 3 is also configured to be able to be fixed and maintained on the tray fixing storage plate 14 by the locking portion including the locking piece and the locking receiving portion. Contribute to the downsizing of the closure, and to easily add and remove each tray required for function requirements, and to safely organize the connection function and drop function for each single-core wire. It can be used effectively for connection between aerial or ground cables and drop optical fiber cables or collective drop optical fiber cables. Mamoru to, accommodates the core wire extra length, a single-core operation more efficient use of the core wire, can be optical cable connecting closure excellent working workability.

  Furthermore, the tray configuration of the embodiment is a configuration that enables connector connection, and maintenance work such as connection work, core wire storage work, and connection status inspection and repair by making all connectors including modularization in each tray. Is easy to implement, has excellent workability, integrates the connection function and drop function for each single core wire, organizes and stores, and easily increases and decreases for each core wire, making it easy to add and storing the connection part in an extremely compact manner The optical cable connection closure can be easily handled. Moreover, each stacked tray can easily connect, switch, branch, and re-collect optical cables without adversely affecting the transmission characteristics of the optical cables. The stored optical fiber core wire can be quickly taken out, the core wire can be easily identified, the connection portion can be easily readjusted and repaired, and the workability can be greatly improved.

  Also, according to the combination of each tray, the use of the patch core wire c allows the core wire to be led into and out of the connection tray 1 at the time of branching and drawing of the core wire. Access 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 easily protect a single-core cable separately. Work such as inspection, repair, confirmation and adjustment can be integrated 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.

It is a longitudinal cross-sectional view which shows one use condition of the Example of this invention. FIG. 2 is a cut front view of the example of FIG. 1. It is a longitudinal cross-sectional view which shows the working state of the unfolded state by expanding the sleeve used in the example of FIG. FIG. 4 is a cut front view of the example of FIG. 3. FIG. 2 is a plan view of a connection tray used in the example of FIG. 1. It is a top view of the tray for splitters used in the example of FIG. 6 shows a state where the splitter module portion of the splitter tray used in the example of FIG. 6 is separated, (a) is a plan view thereof, (b) is a side view showing a locking state of the splitter module portion, (c) ) Is a side view showing a fixing state of the splitter module section. FIG. 2 is a plan view of a drop tray used in the example of FIG. 1. It is a top view of the FO tray used in the example of FIG. FIG. 2 is an explanatory diagram of wiring when a splitter module unit is used, showing an example of a core wiring wiring image used in the example of FIG. 1. The sleeve open holding tool used in the example of FIG. 1 is shown, (a) is its front view, and (b) is its side view. The cable seal adapter used by the example of FIG. 1 is shown, (a) is the front view, (b) is the side view.

A optical cable B DS cable a core wire b connection portion c patch core wire d drop cable 1 connection tray 2 splitter tray 3 drop tray 4 FO tray 5 tray fixing base 6 adapter 7 adapter mounting portion 8 splitter module portion 9 adapter 10 Closure body 10 ₁ Hinge part 11 End face plate 12 Cable gripping tool 13 Tray mounting part 14 Tray fixed storage board 14 ₁ Tray receiving part 15 Guide 16 Grasping tool base 17 Core wire inlet 18 Extra length storage part 19 Wiring ring 20 Connector connection part DESCRIPTION OF SYMBOLS 21 Mounting part 22 Gripping tool base 23 Core wire introduction port 24 Connector plug 25 Sleeve release holder 26 Ring 27 Hook 28 Connecting piece 29 Mounting arm 30 Core wire extra length storage part 31 Guide 32 Grip tool base 33 Core wire introduction port 34 Connector Contact Part 35 cable seal adapter 36 slit 37 sealing strip 40 connecting portion housing portion 41 the core wire excess length storage portion 42 core-guiding portion 43 the core wire pressing piece

Claims (6)

A connection tray 1 for storing a connection portion between the core wire a of the optical cable A and the drop cable d, a connection portion between the core wire a of the optical cable A and the patch core wire c connected to the drop tray 3;
A patch core having a built-in splitter module section 8, a connection section between the splitter module section 8 and the core wire a of the optical cable A, a connection section between the splitter module section 8 and the drop cable d, and a patch core connected to the splitter module section 8 and the drop tray 3. A splitter tray 2 that houses a connection with the line c;
A drop tray 3 for accommodating a connecting portion between the patch cable core c connected to the connection tray 1 or the splitter tray 2 and the DS cable B;
An optical cable connection closure provided in the closure body 10 so as to be displaceable in a state where a plurality of these connection trays 1, splitter trays 2 and drop trays 3 are stacked on the tray fixing base 5, respectively.
The connection tray 1 includes an adapter 6 that enables connector connection as a connection portion, an adapter storage portion 7 provided with a plurality of the adapters 6, and a core wire extra length storage portion 18 that stores a core wire extra length. A connection tray 1 having a configuration as described above,
The splitter tray 2 is a splitter tray 2 having a configuration in which a splitter module unit 8 having a configuration in which a plurality of adapters 9 that enable connector connection in the connector connection unit 20 are provided is detachably provided.
Further, the drop tray 3 includes a connector connection portion 34 that enables connector connection, a connection portion storage portion that stores a plurality of connector connection portions 34, and a core wire extra length storage portion 30 that stores a core wire extra length. And a drop tray 3 having a configuration including
The leading end of the core A of the cable A, the leading end of the drop cable d, the both ends of the patch core c, and the DS cable B that are led into and out of the connecting tray 1, splitter tray 2, and drop tray 3. A connector for connecting an optical cable, characterized in that a connector plug 24 is connected to each of the distal ends, and all of the wiring by the cable A, drop cable d, patch core wire c, and DS cable B is performed by connector connection. The optical cable connection closure according to claim 1,
The connecting tray 1 is provided with a plurality of adapter mounting portions 7 in the longitudinal direction of the core wire and the adapter 6 is selectively arranged, and a stopper structure that suppresses the occurrence of pulling or bending of the core wire when the connector is attached or detached An optical cable connection closure characterized by comprising the guide 15. The optical cable connection closure according to claim 1,
The splitter tray 2 is provided with a splitter module portion 8 having a plurality of connectors 9 detachably provided in the tray by a mounting portion 21, and further has a stopper structure that suppresses the occurrence of pulling or bending of the core wire when the connector is attached or detached. optical cable connecting closure, characterized in that with a 21 _1. The optical cable connection closure according to claim 1,
The drop tray 3 is pivotable by a hinge portion and is detachably provided on the tray fixing base 5 to form a core wire extra length storage portion 30 for storing the extra length of each core wire, and a connector is attached and detached. A closure for connecting an optical cable, characterized in that it is provided with a guide 31 having a stopper structure that sometimes suppresses the pulling and bending of the core wire. In the optical cable connection closure according to claim 1, 2, 3, or 4 ,
Is a pair of sleeves constituting the case body and the lid closure body 10 for accommodating the tray, the side of the sleeve as the lid is freely expanded to the side of the sleeve as the case body through the hinge portion 10 ₁ An optical cable connection closure characterized in that a sleeve release holder 25 is provided which is connected to the sleeve and can adjust the open state of the sleeve on the side of the lid. The optical cable connection closure according to claim 1, 2, 3, 4 or 5 .
A cable seal adapter 35 provided with a plurality of core insertion passages having slits 36 for inserting various cables and a sealing piece 37 made of a thin film is detachably mounted on the end face plate 11 provided in the closure body 10. Closure for optical cable connection.

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