JP2015169747A - Optical cable connection closure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical cable connection closure which can decrease size and weight, facilitates work, improve the work efficiency of a worker, and stably protects a passage cable core.SOLUTION: An optical cable connection closure 10 is provided with a sleeve 38 having one surface which freely opens/closes; a terminating back surface tray attached to a back surface side in the sleeve 38 in a longitudinal direction, and formed with a cable core connecting portion storage portion 14; and a closure body 36 covered by the sleeve 38, and equipped with a terminating base tray 18. The terminating base tray 18 is equipped with a splitter tray 22 on a back surface side; a first storage portion attaching portion 66 capable of being attached with a branch member storage portion of a fan out code; and a second storage portion attaching portion 68 capable of being attached with a connecting member storage portion for connecting an optical fiber cable core with a connector wired from a back surface side to a front surface side and an optical fiber cable core on a downstream side, on the front surface side.

Description

  INDUSTRIAL APPLICABILITY The present invention is used for connecting an overhead optical cable and a drop cable at a wiring point of a fixed wiring section or a connection point of a cable connection point in an access section of an aerial section of a communication cable, particularly an optical cable having an optical fiber core The present invention relates to an optical cable connection closure that protects a connection portion of an optical cable and can easily distribute an optical cable and operate branch connection wiring and protect a passing core wire at a work site.

  Conventionally, when branching, pulling in, or connecting an optical cable, the optical cable cores are connected to each other within the closure, and the connection portion and the extra length of the optical cable core are accommodated. An optical cable connection closure having a long storage tray is known.

  For example, Patent Document 1 discloses a connector storage unit that stores a connector for connecting an optical fiber core, and a core that stores the extra length of a core of a branched optical fiber provided adjacent to the connector storage unit. A termination tray having a wire surplus length storage portion and a wiring gripper base for wiring the branched optical fiber core wires stored in the core wire surplus length storage portion are asymmetrical in the closure body. An optical cable connection closure provided, wherein the sleeve of the closure body is configured to be openable and closable on one side and / or both sides, and cable tension members are mounted on both upper surfaces of the frame for fixing the termination tray installed in the closure body. The fixing portion is configured as a structure that can be fixed from the upper surface side, a connector housing portion of a plurality of core wire connection portions, a connection portion for all connections, a communication carrier side, and a termination tray. And hold core wire connection portion of the subscriber side, the optical cable connecting closure, characterized in that deploying the multi-purpose connecting portion housing portion that is a housing portion of the connecting portion holder is disclosed.

  According to this technology, when determining the installation direction of the optical cable connection closure for the upper side (upstream telecommunications carrier side) and the lower side (downstream subscriber side), the entire fixed closure is left and right. By turning it upside down, it is possible to respond immediately, and it is said that the work of connecting the core wires on site can be simplified.

  In addition, since the core wire gripper base is installed on one side in the assembly state of the closure, there is no need to replace the connection fixing part, and the core wire connection work can be performed easily, and the support wire and tension member can be fixed. Can be accessed from the top surface of the closure, and it is not necessary to replace the connector fixing base on the upper side or lower side when dropping wiring from an optical cable or branch connection wiring. Single-core operation can be performed without affecting the core wire, and a vacant core wire can be used as a single-core wire necessary for subsequent user participation, etc. ing.

  Furthermore, since the connection / storage of the core wire is configured such that the connector can be connected, the workability can be greatly improved including maintenance work such as connection work, core wire storage work, inspection and repair of the connection status. In addition, since the cores separated into single cores can be protected, the optical cable can be used effectively, and it can be used for extending the lower part of the cores and aerial loop wiring. It is said that the optical access service that can be returned to the main line again can be provided quickly and inexpensively. Since the passing core guide is provided, it is possible to hold the passing core that is not branched in the closure.

  Moreover, in the cited document 2, the termination tray provided with the connector storage part which accommodates the connector which consists of the socket and plug which become a connection part of an optical cable core wire, and the core wire extra length storage part which accommodates an extra length of a 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, and a splitter in the splitter tray is further provided via the termination board. Connected to the tape core connected via the cable, DS / R / TD cable, and drop cable to enable connector connection, and the connectors and extra long cores of each connection are organized. A closure for connecting an optical cable, wherein a plurality of termination trays and / or splitter trays are provided in the closure body so as to be displaceable. It has been disclosed.

  According to this technology, it is possible to operate a single core without affecting other core wires when dropping and branching connection from an optical cable. Use as a simple single-core wire to increase the efficiency of use of the core wire and modularize the connection and storage of the core wire, so that it can be connected to the connector, including connection work, core wire storage work, and maintenance work such as inspection and repair of the connection status In addition to greatly improving the performance, it is possible to protect the core wire separated into single cores, and the optical cable can be used effectively, and it is possible to support the extension of the lower portion of the core wire and the aerial loop wiring, and once branched Optical access services can be provided quickly and inexpensively, for example, the core can be returned to the main line, and the functions for storing the drop and branch connection wires and their connector connections are different. It is also possible to install multiple trays on the tray fixing base so that they can be pivoted and detachable. Each tray required for function requirements can be easily added and removed, making the cable connection work extremely easy and good. Wiring processing is easy and easy to handle.

  Further, the splitter tray is provided with a plug in the core wire connected to the termination board, and a splitter having a socket provided in a plurality of core wires connected to each termination tray is provided to enable connector connection. When configured in the splitter tray, it is simplified as a wiring system that connects the splitter input core wire from the termination board to the splitter and connects to the termination tray, which is easy to handle and eliminates erroneous connection of workers. It is said that quality can be maintained with uniformity.

JP 2008-65037 A JP 2007-121603 A

  However, since the optical cable connection closure disclosed in Patent Document 1 has many components necessary for its configuration (for example, a frame that supports the termination tray, etc.), the overall configuration becomes large. In addition, it has been pointed out that the weight becomes heavier and the installation work becomes complicated. In addition, since the termination tray is configured to be fixed to the frame in a certain direction, it is necessary to use a termination tray that can be connected to the connector only on one side, maintenance management of the optical cable, Some pointed out that later branching work would be complicated.

  Even if a termination tray that can be connected to the connector on the front and back surfaces is used, when working on the termination tray, for example, the operator goes around the optical cable connection closure. It is necessary and improvement in terms of work efficiency is necessary. Furthermore, if the passing core wire is held by the passing core guide provided in the closure, the passing core wire itself may be deformed due to the passing core guide over time. was there.

  The closure for connecting an optical cable disclosed in Patent Document 2 has a configuration in which a plurality of termination trays and / or splitter trays are provided in the closure body, and the splitter is disposed on the splitter tray. In the same manner as in No. 1, it is pointed out that a large-scale configuration is used as a whole, and that there is a lot of waste in terms of cost and work in a small-scale site that does not originally require a large optical cable connection closure.

  Furthermore, since the termination tray and / or the splitter tray are arranged in the closure body so as to form a plurality of layers, wiring work, branching work, etc. become complicated, and work efficiency is improved. There has been a need for improvements in the area.

  The present invention is intended to solve the above-described problems, and by simplifying the configuration, the entire apparatus can be reduced in size and weight, and further, connector connection, branch connection, and drop connection are possible. The construction allows the work on the termination base tray to be performed more easily, simplifies the selection of the connection form, improves the work efficiency of the operator, and does not require a passing core guide. It is an object of the present invention to provide an optical cable connection closure capable of stably protecting a passing core wire.

In order to cope with the above-described problems, the present invention takes the following technical means.
That is, the invention according to claim 1 is a sleeve having a structure in which one side can be freely opened and closed, and is attached to the back side in the sleeve along the longitudinal direction, and an upstream optical fiber and a downstream optical fiber. A termination rear tray formed with a core wire connecting portion storing a core wire connecting portion for connecting the core wire, and a tray locking member formed in the sleeve while being covered with the sleeve. By being pivotally supported, a closure main body is provided that includes a termination base tray that is rotatably disposed in the sleeve around the tray locking member as an axis, and the termination base tray includes: A splitter tray capable of attaching a splitter for drawing the downstream optical fiber core to the back surface and branching the incident optical signal is provided, and is provided on the surface side of the termination base tray. A branch member that receives an optical signal branched by the splitter attached to the splitter tray, and stores a fan-out cord branch member wired from the back side to the front side of the termination base tray. The optical signal branched by the 1st accommodating part attaching part which can attach an accommodating part and the splitter attached to the splitter tray is received, and it is wired from the back side to the surface side of the termination base tray A second storage portion mounting portion to which a connection member storage portion for storing a connection member for connecting a connector-attached optical fiber core wire and a downstream optical fiber core wire can be attached is provided. This is an optical cable connection closure.

  The invention according to claim 2 is the optical cable connection closure according to claim 1, wherein the optical signal branched by the splitter attached to the splitter tray is received by the second storage part attaching part, An optical fiber core with a connector wired from the back surface side to the front surface side of the termination base tray and a connection member housing portion for housing a connection member to be connected to the downstream optical fiber core wire are attached. It is characterized by. Further, the invention according to claim 3 is the optical cable connection closure according to claim 1 or 2, wherein the splitter tray is a tray fixing hinge portion formed on the back side of the termination base tray. It is characterized by being rotatably provided.

  According to a fourth aspect of the present invention, there is provided the optical cable connection closure according to the third aspect, wherein the tray fixing hinge portion has a hinge configuration capable of holding the provided splitter tray at a predetermined angle. It is characterized by becoming. Further, the invention according to claim 5 is the optical cable connection closure according to any one of claims 1 to 4, wherein the fan-out cord and the downstream side are provided on the surface side of the termination base tray. A connection member storage portion that stores a connection member for connecting the optical fiber core wire is provided.

  The invention according to claim 6 is the optical cable connection closure according to any one of claims 1 to 5, wherein the branching member is opposed to a predetermined position on the side edge in the longitudinal direction on the bottom side. These clamping members are provided in a projecting manner, and the other branching members can be clamped by the clamping members so that they can be configured in a stacked state. Further, the invention according to claim 7 is the optical cable connection closure according to any one of claims 1 to 6, wherein the connection member storage portion is formed with a stacking groove portion at a predetermined position on the bottom surface side. In addition, stacking ribs project from a predetermined position on the upper surface side, and the stacking ribs of the other connecting member storage portions are fitted into the stacking groove portions to stack them. It can be configured in a state.

  Furthermore, the invention according to claim 8 is the optical cable connection closure according to any one of claims 1 to 7, wherein a plurality of sheet locking hooks are formed at predetermined positions of the termination rear tray. In addition, a protective sheet capable of protecting the passing core wire is locked to the locking hook. The invention according to claim 9 is the optical cable connection closure according to claim 8, wherein the protective sheet is composed of a first sheet and a second sheet, and both the sheets are respectively associated with the sheet. The passage core wire is included and protected by engaging the locking members formed at the respective predetermined positions with each other and being locked to the stop hooks.

  A tenth aspect of the present invention is the optical cable connection closure according to any one of the first to ninth aspects, wherein one or a plurality of member locking members are provided at predetermined positions of the termination rear tray. A hook is formed, and a core identification member for holding and fixing a predetermined optical fiber core is attached to the member locking hook.

  The invention according to claim 11 is the optical cable connection closure according to any one of claims 1 to 10, wherein the core wire identification member has a plurality of protrusions, and a gap between the protrusions. And a second member provided with a plurality of fitting holes corresponding to the protrusions are connected to be foldable so as to face each other. The predetermined optical fiber cores inserted through the gaps between the protrusions are sandwiched and fixed by folding the two and inserting the plurality of protrusions into the plurality of fitting holes. .

  The invention according to a twelfth aspect is the optical cable connection closure according to any one of the first to eleventh aspects, wherein the core wire identification member is a locking hole provided at a predetermined position of the first member. Is attached to the back tray for termination by hooking the hook for locking the member.

  And invention of Claim 13 is an optical cable connection closure in any one of Claims 1-12, Comprising: On the back surface side of the said termination | terminus base tray, an upstream optical fiber core wire, A drop tray having a drop cable connection member storage portion for storing a drop cable connection member for connecting to a downstream single-core drop cable is provided. Further, the invention according to claim 14 is the optical cable connection closure according to claim 13, wherein the drop tray is rotated at a tray fixing hinge portion formed on the back side of the termination base tray. It is characterized by being freely movable.

  The invention according to claim 15 is the optical cable connection closure according to claim 14, wherein the drop tray can be held at a predetermined angle by the tray fixing hinge. It is a feature. Furthermore, the invention according to claim 16 is the optical cable connection closure according to any one of claims 1 to 15, wherein the fan out cord and the drop cable are provided on the splitter tray and the termination base tray. It is characterized in that a holding member for fixedly holding the plug is detachably attached.

  The invention according to claim 17 is the optical cable connection closure according to any one of claims 1 to 16, wherein the sleeve is composed of a split sleeve, and the work is possible depending on the installation position of the closure body. The sleeve surface which is the direction is configured to be openable, and a sleeve stopper for holding the sleeve opened in a single opening at a predetermined position is provided so as to be detachable between the divided sleeves.

  According to the present invention, since the configuration of the optical cable connection closure can be simplified (for example, a frame for supporting the termination base tray is not required), the entire apparatus can be reduced in size and weight. I can hope. Further, since the termination base tray is pivotably mounted in the closure body, the work surface can be easily accessed from either the front or the back, and the work can be performed easily.

  Furthermore, since the core wire connecting portion storage portion is formed in the termination rear tray, for example, the optical fiber core wire once connected to the splitter side is reconnected to the downstream optical fiber core wire (main line). Work such as (extending the lower part) can be easily performed. Further, since the open / closed state of the sleeve can be easily adjusted, it is possible to improve workability.

  Furthermore, since a splitter tray to which a splitter can be attached is provided on the back side of the termination base tray, work efficiency at the site is greatly improved. And since a branch member storage part and a connection part storage part can be freely attached to the surface side of the base tray for termination, selection of a connection form becomes easy. Moreover, since the protection sheet for the passing core wire is provided, the passing core wire can be stably protected.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which showed 1st Embodiment of the optical cable connection closure which concerns on this invention, (a) is the longitudinal cross-sectional schematic diagram of the state which fell the base tray for termination to the work surface side, (b) is a splitter tray. It is the longitudinal cross-sectional schematic of the state which fell the attached base tray for termination to the work surface side. The front of the termination | terminus base tray in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is the state in which the cord connection member is attached to the right side, (b) is cord connection The member is attached to the right side, the branch member storage part is attached to the first storage part attachment part, (c) is the state where the connection member storage part is attached to the second storage part attachment part FIG. 2A and 2B show a splitter tray provided in the termination base tray in the first embodiment of the optical cable connection closure according to the present invention, in which FIG. (C) is the schematic which showed the structure of the tape surface side in the state which has not attached the splitter. The structure of the branch member in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is a top view, (b) is a front view, (c) is a right view, (d). Is a left side view. It is the front view which showed the stacking process of the branch member in 1st Embodiment of the optical cable connection closure which concerns on this invention. The structure of the connection part accommodating part in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is a top view, (b) is a front view, (c) is a bottom view, (d ) Is a left side view, (e) is a front view when stacked, and (f) is a left side view when stacked. The structure of the cord connection member in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is the top view of the state which stopped the cover part, (b) is the state which stopped the cover part (C) is a top view of the state which removed the cover part, (d) is a front view of the state which removed the cover part. The structure of the sleeve in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is a sleeve side view in the state where one side opened, (b) is a sleeve side view in the closed state is there. It is the schematic which showed the protective sheet in 2nd Embodiment of the closure for optical cable connection which concerns on this invention, (a) is a front view, (b) is a left view. The figure which showed the termination | terminus back tray in 2nd Embodiment of the optical cable connection closure which concerns on this invention, (a) is a top view, (b) is a front view, (c) is a right view, (d ) Is a schematic diagram (left: side view, right: front view) of the core identification member. It is the figure which showed 3rd Embodiment of the optical cable connection closure which concerns on this invention, (a) is the longitudinal cross-sectional schematic diagram of the state which fell the base tray for termination to the work surface side, (b) is a splitter tray and It is the longitudinal cross-sectional schematic of the state which stood up the termination | terminus base tray which attached the drop tray to the back side. The drop tray with which the termination base tray in 3rd Embodiment of the optical cable connection closure which concerns on this invention was shown is shown, (a) is a strand surface side, (b) is a structure by the side of a tape surface. It is the schematic which showed. The retention member in embodiment of the closure for optical cable connection which concerns on this invention is shown, (a) is a front view, (b) is a top view, (c) is a right view. It is the schematic which showed the state which attached the splitter tray and the holding member to the back surface side of the termination | terminus base tray in the embodiment of the optical cable connection closure which concerns on this invention, and fell down to the back surface side. It is the figure which showed the end face plate in embodiment of the closure for optical cable connection which concerns on this invention, (a) is an upstream end face plate, (b) is a downstream end face plate at the time of wiring function exclusive use, (c) is a drop exclusive use The downstream end faceplate of the hour is represented. FIG. 2 is a diagram showing a gripping member for gripping a cable in an embodiment of an optical cable connection closure according to the present invention, wherein (a) is a cable fixing portion, (b) is a cable gripping tool, and (c) is a cable by a gripping tool. It is the figure which showed the state fixed to the fixing | fixed part.

A first embodiment of an optical cable connection closure according to the present invention will be described with reference to FIGS.
1A and 1B are diagrams showing an embodiment of an optical cable connection closure according to the present invention, in which FIG. 1A is a schematic vertical sectional view of a state in which a termination base tray is tilted to the working surface side, and FIG. It is the longitudinal cross-sectional schematic of the state which fell down the base tray for termination | terminus attached to the work surface side. FIG. 2 is a front view of the termination base tray in the embodiment of the optical cable connection closure according to the present invention, in which (a) shows a state in which the cord connection member is attached to the right side, and (b). Is a state in which the cord connecting member is attached to the right side and the branch member storage portion is attached to the first storage portion attachment portion, and (c) is the connection member storage portion attached to the second storage portion attachment portion. FIG.

  3 shows a splitter tray provided in the termination base tray in the embodiment of the optical cable connection closure according to the present invention. FIG. 3A shows a state in which the splitter is attached, and FIG. (C) is the schematic which showed the structure by the side of the tape surface in the state which has not attached the splitter. FIG. 4 shows the structure of the branch member in the embodiment of the optical cable connection closure according to the present invention, where (a) is a plan view, (b) is a front view, and (c) is a right side view, (D) is a left side view. Further, FIG. 5 is a front view showing a step of stacking branch members in the embodiment of the optical cable connection closure according to the present invention.

  FIG. 6 shows the configuration of the connecting portion storage portion in the embodiment of the optical cable connecting closure according to the present invention, where (a) is a plan view, (b) is a front view, and (c) is a bottom view. , (D) is a left side view, (e) is a front view when stacked, and (f) is a left side view when stacked. Further, FIG. 7 shows the configuration of the cord connecting member in the embodiment of the optical cable connecting closure according to the present invention, in which (a) is a plan view of the state in which the lid portion is stopped, and (b) is the lid portion. The front view of the state which stopped | fastened, (c) is a top view of the state which removed the cover part, (d) is a front view of the state which removed the cover part. FIG. 8 shows the configuration of the sleeve in the first embodiment of the optical cable connection closure according to the present invention. (A) is a side view of the sleeve with one side open, and (b) is closed. It is a sleeve side view of a state.

  In addition, 10 is a closure for optical cable connection, 12 is a rear tray for termination, 14 is a core wire connection portion storage portion, 16 is a core wire connection portion, 18 is a base tray for termination, 20 is a tray locking member, 22 is Splitter tray, 24 is a splitter, 26 is a tray fixing hinge, 28 is a branching member storage, 30 is a branching member, 31 is a clamping member, 32 is a knob, 33 is a cord connection member storage, and 34 is a cord connection member , 35 is a lid, 36 is a closure body, 38 is a sleeve, 40 is a sleeve stopper, 42 is a pin, 43 is a locking groove, 44 is an upstream end plate, 46 is a downstream end plate, 50 is a cable gripping member, 52 is a cable fixing part, 54 is a cable gripper, 56 is a hook part, 60 is a cord extra length storage part, 62 is a connection member, 64 is a connection member storage part, 66 is a first storage part mounting part, and 68 is Second Storage portion mounting portion, 70 is a stacking groove, 72 is a stacking rib, A is an optical cable, B is an optical fiber core wire, C is a single core drop cable, D is a support wire, and E is a fan-out cord Yes.

  As shown in FIG. 1, the closure main body 36 of the optical cable connection closure 10 according to the present embodiment is first connected integrally with a hinge and covered with a sleeve 38 that is configured to be openable and closable on one side. Further, an upstream end face plate 44 for introducing the optical cable A and the support line D through the seal member and a downstream end face plate 46 for introducing and guiding the optical cable A and the support line D through the seal member are detachable at both ends. Is provided.

  For example, as shown in FIG. 15A, the end face plates 44 and 46 are provided with a support line D insertion portion and a main cable (optical cable A) insertion portion on the upstream end face plate 44, Moreover, as shown in (b), the downstream end face plate 46 is formed with an insertion portion such as a support wire D insertion portion and a main cable (optical cable A) insertion portion. The combination of rubber and plastic makes it possible to prevent drip.

  The optical cable A led out from the end face plates 44 and 46 is configured to be gripped by the cable gripping member 50. Specifically, as shown in FIG. 16, the optical cable A is a U-shaped cable in side view. In a state of being sandwiched between the side walls of the gripping tool 54 (see FIG. 16A), the both side walls of the cable gripping tool 54 are inserted into the corresponding fitting holes of the cable fixing portion 52 (FIG. 16B). The optical cable A is gripped by the cable gripping member 50 (see FIG. 16C).

  Further, in the closure main body 36, a core wire connection for connecting the optical fiber core wire B cut out at a predetermined position from the upstream optical fiber A to the downstream optical fiber core wire B (splitter: input line). A termination rear tray 12 in which a core wire connecting portion storage portion 14 for storing the portion 16 is formed is provided. In the present embodiment, the optical fiber core B on the downstream side is a core for connector connection with the output side of the splitter 24.

  Further, a cord extra length housing portion 60 for accommodating the extra fiber length B of the optical fiber core B in a state where the optical fiber cord B is wound around the termination rear tray 12 is provided in the vicinity of the core wire connection portion accommodating portion 14. If formed, safe protection management of the optical fiber core B can be achieved, which is very preferable as an embodiment.

  Next, a termination base tray provided with a splitter tray 22 on which a downstream optical fiber core B (input line) is drawn to the back surface and a splitter 24 for branching an optical signal incident from the input line can be attached. 18 is provided so as to be rotatable about the tray locking member 20 as an axis center by hooking a hook 56 formed at one end thereof onto a tray locking member 20 formed in the closure main body 36.

  The termination base tray 18 is configured such that the two hook portions 56 formed at one end thereof are hooked on the tray locking member 20 to be locked in the closure main body 36, and the tray locking member 20 is moved. Since it can be rotated about the axis, the operator can perform the work on the front and back surfaces of the base tray 18 for termination without moving botheringly, and the work efficiency can be greatly improved. .

  Subsequently, as shown in FIG. 1B, the splitter tray 22 is rotatably provided on a tray fixing hinge portion 26 formed on the back side of the termination base tray 18. In FIG. 1B, the tray fixing hinge portion 26 is attached with the splitter tray 22 being stacked in two stages, but this number is not intended to limit the present invention. In this embodiment, the splitter tray 22 is attached to the left side. However, the splitter tray 22 may be operated by attaching it to the right tray fixing hinge portion 26.

  Further, in the present embodiment, the tray fixing hinge portion 26 has a hinge structure, and can hold the splitter 24 with respect to the tray fixing hinge portion 26 at a predetermined angle. With such a structure, the operator can access the splitter 24 very easily. In the present embodiment, the tray fixing hinge portion 26 has a hinge structure, but any hinge structure may be used as long as the splitter 24 can be fixed.

  Subsequently, as shown in FIG. 3A, the splitter tray 22 in the present embodiment is made to function by inserting a splitter 24 therein, and the input line is used as the element surface of FIG. The line is used on the tape surface of (c). Since the front and back surfaces are separated in this way, it is possible to avoid the mixing of core wires having a difference in rigidity and to protect the core wires.

  Next, as shown in FIG. 2A, at a predetermined position on the surface side of the termination base tray 18 (near the center in the present embodiment), the first storage portion mounting portion 66 and the second The first storage section mounting portion 66 is wired from the front side to the back side of the termination base tray 18 that receives the optical signal branched by the splitter 24. The branch member storage portion 28 for storing the branch member 30 of the fan-out cord E can be attached, and the second storage portion attachment portion 68 receives the optical signal branched by the splitter 24. A connecting member storage portion 64 for storing a connecting member 62 for connecting the optical fiber core G with a connector wired from the front surface side to the back surface side of the base tray 18 and the downstream optical fiber core wire can be attached. ing.

  With such a configuration, the degree of freedom in selecting the connection form increases, and the work efficiency can be improved. In the present embodiment, the fan-out cord E has a fan-out cord (09 tube) on the upstream side and a fan-out cord (core wire) on the downstream side with the branch member 30 as a boundary.

  Further, as shown in FIG. 4, the branching member 30 is provided with a pair of opposing clamping members 31 protruding at predetermined positions on the longitudinal side edge on the bottom surface side. By sandwiching the members 30, as shown in FIG. 5, they can be configured in a stacked state. Moreover, if the clamping member 31 is opened by picking the knobs 32 of the stacked upper branch members 30, the lower branch members 30 can be easily removed. In addition, in this embodiment, although the clamping member 31 is protrudingly provided by two places, this invention is not limited to this number. Further, the use of the branch member 30 is not limited to the optical cable connection closure according to the present invention.

  Next, as shown in FIG. 6, the connecting member storage portion 64 has a stacking groove portion 70 formed at a predetermined position on the bottom surface side, and further, a stacking rib 72 is formed at a predetermined position on the top surface side. Projected. Then, as shown in FIGS. 6 (e) and 6 (f), the connecting member storage portions 64 are connected to each other by fitting the stacking ribs 72 of the other connection member storage portions 64 to the stacking groove portions 70. It can be configured in a stacked state.

  Further, on the surface side of the termination base tray 18, a cord connecting member for connecting the fan-out cord E (core wire) and the optical fiber core wire B cut out at a predetermined position from the downstream optical cable A. A cord connecting member storage portion 33 for storing 34 is provided. As shown in FIG. 7, the cord connection member storage portion 33 is provided with a rectangular lid portion 35 orthogonal to the longitudinal direction of the cord connection member storage portion 33 in a hinge structure formed on one end side. Then, the lid 35 rotates around this hinge structure to cover the cord connection member storage portion 33, and it is possible to suppress detachment of the cord connection member 34 to be stored. .

  Furthermore, as shown in FIG. 8, the sleeve 38 of the optical cable connection closure 10 according to the present embodiment is composed of a split sleeve configured to be openable and closable on one side, and a sleeve surface in a direction in which work can be performed depending on the position where the closure is installed. The sleeve stopper 40 that holds the sleeve 38 that is opened in a single opening in a predetermined position is detachably provided across the divided sleeves. Therefore, it is possible to maintain the open state of the sleeve that expands without removing the sleeve 38 during work, and improvement in work efficiency is desired.

  In this embodiment, the sleeve 38 is integrally connected so as to be split by a hinge structure, and a pair of pins 42 having flanges at the ends protrudes from both end surfaces, and the locking grooves 43 fit into the pins 42. The sleeve stopper 40 provided at one end and two at the other end is detachably provided.

  In a state where the sleeve 38 is closed, as shown in FIG. 8B, it can occur on a daily basis by fitting and locking the outer locking groove 43 on one end side of the sleeve stopper 40 to the pin 42 of the sleeve 38. It is possible to prevent the one side from falling off due to deterioration cracks or the like of the sleeve 38.

  When the sleeve 38 on one working surface side is opened, the inner locking groove 43 on one end side of the sleeve stopper 40 is fitted and locked to the pin 42 of the sleeve 38 as shown in FIG. By doing so, the open state of the sleeve 38 can be maintained.

Next, a second embodiment of the optical cable connection closure according to the present invention will be described mainly with reference to FIGS.
FIG. 9 is a schematic view showing a protective sheet in a second embodiment of the optical cable connection closure according to the present invention, where (a) is a front view, (b) is a left side view, and FIG. 10 is the present invention. FIG. 5A is a plan view, FIG. 5B is a front view, FIG. 5C is a right side view, and FIG. 5D is a diagram illustrating a termination rear tray in the second embodiment of the optical cable connection closure according to FIG. It is the schematic (left: side view, right: front view) of a core wire identification member. In addition, regarding the reference numerals, 74 is a protective sheet, 76 is a first sheet, 78 is a second sheet, 80 is a lock member, 82 is a locking hole, 84 is a sheet locking hook, and 86 is a core wire identification. Members, 88 is a member locking hook, 90 is a first member, 92 is a protrusion, 94 is a second member, 96 is a fitting hole, 98 is a locking hole, F indicates a passing core wire, This is the same as in the first embodiment.

  In the optical cable connection closure in the present embodiment, a plurality of protective sheets 74 that can be passed through in a state where the optical fiber core B that is not branched and connected in the closure is protected are formed at predetermined positions on the termination rear tray 12. It is locked to the hook 82 for locking the sheet. For example, in the single-core drop cable C, the optical fiber core B that is not connected to the upstream optical fiber core B can be similarly protected by the protective sheet 74.

  Next, the protection sheet 74 in the present embodiment will be described with reference to the drawings. As shown in FIG. 9B, the protective sheet 74 includes a first sheet 76 and a second sheet 78. Further, as shown in FIG. 9B, the first sheet 76 is formed. Are formed with four locking holes 82, and the second sheet 78 is formed with two locking holes 82. The number of the locking holes 82 is not limited to this embodiment.

  First, by locking the locking holes 82 of the first sheet 76 with a plurality of sheet locking hooks 84 (see FIG. 10) formed at predetermined positions on the termination rear tray 12, The sheet 76 is fixed to the termination rear tray 12, and then, a plurality of sheet latching hooks 84 (a plurality of latching holes 82 of the second sheet 78 are formed at predetermined positions of the termination rear tray 12 ( 10), the second sheet 78 is fixed to the termination rear tray 12. As shown in FIG. Then, the state shown in FIG.

  Then, the passing core wire F is passed between the first sheet 76 and the second sheet 78, and in this state, the lock members 80 (recessed / recessed) formed on the first sheet 76 and the second sheet 78, respectively. By fitting the projections to each other, the passing core wire F can be enclosed in the protective sheet 74 and protected.

  By the way, the conventional optical cable connection closure often employs a configuration in which a passing core wire guide is used and the passing core wire F is passed through while being held on the front side of the termination rear tray. And it is common to attach the core identification member used in order to identify an optical fiber core wire efficiently at the time of a connection operation | work to this passing core wire guide. However, in this embodiment, since no passing core wire guide is provided, the core wire identification member 86 shown in FIGS. 10B and 10D is locked to a member formed at a predetermined position of the termination rear tray 12. It is attached to the hook 88 for use.

  As shown in FIG. 10 (d), the core identification member 86 in the present embodiment has a plurality of protrusions 92, and a first member 90 that allows an optical fiber core to be inserted into the gap between the protrusions 92. And the second member 94 provided with a plurality of fitting holes 96 corresponding to the protrusions 92 are connected so as to be foldable so as to face each other, and the plurality of protrusions 92 are respectively connected to the corresponding fitting holes 96. Thus, the optical fiber core wire inserted through the gap between the protrusions 92 can be sandwiched and fixed.

  In the present embodiment, the core wire identification member 86 is a member locking hook 88 formed at a predetermined position of the termination rear tray 12 in a locking hole 98 provided at a predetermined position of the first member 90. Is fixed by sliding the core wire identification member 86 in a predetermined direction. In consideration of work efficiency, it is preferable to change the upper and lower sides of the core wire identification member 86 in a suitable direction.

  Next, a third embodiment of the optical cable connection closure according to the present invention will be described with reference mainly to FIGS. FIG. 11 is a view showing a third embodiment of the optical cable connection closure according to the present invention, in which (a) is a schematic longitudinal sectional view of the state in which the termination base tray is tilted to the working surface side, and (b). FIG. 3 is a schematic longitudinal sectional view of a state in which a termination base tray to which a splitter tray and a drop tray are attached is raised to the back side.

  FIG. 12 shows a drop tray provided in the termination base tray in the third embodiment of the optical cable connection closure according to the present invention, where (a) is the strand surface side, (b) FIG. 4 is a schematic view showing the configuration on the tape surface side. The reference numerals are the same as those in the first embodiment except that 100 is a drop tray, 102 is a drop cable connecting member storage portion, 104 is a drop cable connecting member, 106 is a drop cable fixing portion, and G is an insertion core with a connector. This is the same as in the embodiment.

  As shown in FIG. 11, the closure main body 36 of the optical cable connection closure 10 according to the present embodiment is first connected integrally with a hinge and covered with a sleeve 38 that is configured to be openable and closable on one side. Further, an upstream end face plate 44 for introducing the optical cable A and the support line D through the seal member and a downstream end face plate 46 for introducing and guiding the optical cable A and the support line D through the seal member are detachable at both ends. Is provided.

  For example, as shown in FIG. 15A, the end face plates 44 and 46 are provided with a support line D insertion portion and a main cable (optical cable A) insertion portion on the upstream end face plate 44, Moreover, as shown in (b), the downstream end face plate 46 is formed with an insertion portion such as a support wire D insertion portion and a main cable (optical cable A) insertion portion. Further, for example, when used exclusively for the drop function, the downstream end face plate 46 is configured as shown in FIG. The combination of rubber and plastic makes it possible to prevent drip.

  The optical cable A led out from the end face plates 44 and 46 is configured to be gripped by the cable gripping member 50. Specifically, as shown in FIG. 16, the optical cable A is a U-shaped cable in side view. In a state of being sandwiched between the side walls of the gripping tool 54 (see FIG. 16A), the both side walls of the cable gripping tool 54 are inserted into the corresponding fitting holes of the cable fixing portion 52 (FIG. 16B). The optical cable A is gripped by the cable gripping member 50 (see FIG. 16C).

  Next, in the closure main body 36, the optical fiber core B cut out from the upstream optical fiber A at a predetermined position is connected to the downstream optical fiber core B (input line to the splitter 24 and the drop tray 100 side). The termination rear tray 12 is provided with a core wire connection portion storage portion 14 for storing a core wire connection portion 16 for connection to the input line.

  Further, the cord extra length housing portion 60 for accommodating the extra length portion of the optical fiber core wire B wound around the termination rear tray 12 in the vicinity of the core wire connection portion accommodating portion 14 is accommodated. If formed, safe protection management of the optical fiber core B can be achieved, which is very preferable as an embodiment.

  A drop cable connection that accommodates a drop cable connection member 104 that draws a downstream optical fiber core B (input line) from the front side into the back surface and connects the input line to the downstream single core drop cable C. The termination base tray 18 provided with the drop tray 100 in which the member storage portion 102 is formed hooks the hook portion 56 formed at one end thereof onto the tray locking member 20 formed in the closure main body 36. Accordingly, the tray locking member 20 is provided so as to be rotatable about the axis.

  The termination base tray 18 is configured such that the two hook portions 56 formed at one end thereof are hooked on the tray locking member 20 to be locked in the closure main body 36, and the tray locking member 20 is moved. Since it can be rotated about the axis, the operator can perform the work on the front and back surfaces of the base tray 18 for termination without moving botheringly, and the work efficiency can be greatly improved. .

  Subsequently, as shown in FIG. 11 (b), the drop tray 100 is rotatably provided on a tray fixing hinge portion 26 formed on the back side of the termination base tray 18.

  Further, in the present embodiment, the tray fixing hinge portion 26 has a hinge structure, and can hold the drop tray 100 with respect to the tray fixing hinge portion 26 at a predetermined angle. By adopting such a structure, the operator can access the drop tray 100 very easily. In the present embodiment, the tray fixing hinge portion 26 has a hinge structure, but any hinge structure may be used as long as the drop tray 100 can be fixed.

  Subsequently, as shown in FIG. 11B, the drop tray 100 in the present embodiment draws in the insertion core G with a connector connected to the upstream optical fiber core B (input line) from the surface side, A drop cable connection member storage portion 102 for storing a drop cable connection member 104 (FAS plug, FAS socket) for connecting the input line to the downstream single core drop cable C is formed. 12A is assigned to the front side, that is, the side into which the insertion core G with connector is drawn.

  The single-core drop cable C connected by the drop cable connecting member 104 is dropped to the outside while being fixed by the drop cable fixing portion 106 on the back surface of the drop tray 100, that is, on the drop surface side in FIG. It has come to be. Further, the single core drop cable C to be connected to the insertion core wire G with the connector is again passed from the back surface to the front surface of the drop tray 100 and is fixed to the outside through the downstream end face plate 46 while being fixed by the cable gripping member 50. It is supposed to be dropped.

  The single-core drop cable C connected to the splitter 24 without being connected to the drop cable connection member 104 is also an optical fiber core connected to the splitter 24 through the drop surface and without being connected to the drop cable connection member 104. The line B is also passed through from the back surface of the drop tray 100.

  Furthermore, as shown in FIG. 8, the sleeve 38 of the optical cable connection closure 10 according to the present embodiment is composed of a split sleeve configured to be openable and closable on one side, and a sleeve surface in a direction in which work can be performed depending on the position where the closure is installed. The sleeve stopper 40 that holds the sleeve 38 that is opened in a single opening in a predetermined position is detachably provided across the divided sleeves. Therefore, it is possible to maintain the open state of the sleeve that expands without removing the sleeve 38 during work, and improvement in work efficiency is desired.

  In this embodiment, the sleeve 38 is integrally connected so as to be split by a hinge structure, and a pair of pins 42 having flanges at the ends protrudes from both end surfaces, and the locking grooves 43 fit into the pins 42. The sleeve stopper 40 provided at one end and two at the other end is detachably provided.

  In a state where the sleeve 38 is closed, as shown in FIG. 8B, it can occur on a daily basis by fitting and locking the outer locking groove 43 on one end side of the sleeve stopper 40 to the pin 42 of the sleeve 38. It is possible to prevent one side from falling off due to a crack of the sleeve 38 or the like.

  When the sleeve 38 on one working surface side is opened, the inner locking groove 43 on one end side of the sleeve stopper 40 is fitted and locked to the pin 42 of the sleeve 38 as shown in FIG. By doing so, the open state of the sleeve 38 can be maintained.

  Next, other embodiments of the optical cable connection closure according to the present invention will be described. FIG. 13 shows a holding member in another embodiment of the optical cable connection closure according to the present invention, wherein (a) is a front view and (b) is a plan view. FIG. 14 is a schematic view showing a state in which a splitter tray and a holding member are attached to the back side of the termination base tray in the other embodiment of the optical cable connection closure according to the present invention, and the state is tilted to the back side. is there. Regarding reference numerals, 108 represents a retaining member, 110 represents an insertion hole, and 112 represents an attachment member.

  This embodiment is an optical cable connection closure 10, as shown in FIG. 14, on the back side of a splitter tray 22 provided on the back side of the termination base tray 18 on the back side, or on the termination base. The holding member 108 is directly attached to the back side of the tray 18. The holding member 108 temporarily holds a fan-out cord E or a single-core drop cable C that is not used for connection. As shown in FIG. 13, an insertion hole 110 for inserting the cable is provided. A plurality are formed. The holding member 108 can be provided directly on the back surface of the termination base tray 18.

  Further, an attachment member 112 for attaching to the rear surface of the splitter tray 22 and the termination base tray 18 is formed. The holding member 108 is applied from the back surface side of the splitter tray 22 or the back surface of the termination base tray 18, and the attachment member 112 is inserted into a groove formed on the side surface of the splitter tray 22 or the back surface of the termination base tray 18. It is designed to be fixed by fitting. By attaching the holding member 108 in this manner, it is possible to effectively hold the fan-out cable E and the single-core drop cable C that are not used for connection during work so as not to get in the way.

  The closure for connecting an optical cable according to the present invention is reduced in size and weight, and the work efficiency is greatly improved. Therefore, it can be suitably used when working in a wide variety of installation locations. This leads to improvement of work efficiency.

DESCRIPTION OF SYMBOLS 10 Optical cable connection closure 12 Termination back tray 14 Core wire connection part 16 Core wire connection part 18 Termination base tray 20 Tray latching member 22 Splitter tray 24 Splitter 26 Tray fixing hinge part 28 Branch member storage part 30 branching member 31 clamping member 32 knob 33 cord connecting member storage 34 cord connecting member 35 lid 36 closure body 38 sleeve 40 sleeve stopper 42 pin 43 locking groove 44 upstream end plate 46 downstream end plate 50 cable gripping member 52 Cable fixing part 54 Cable gripping tool 56 Hook part 60 Core wire extra length storage part 62 Connection member 64 Connection member storage part 66 First storage part attachment part 68 Second storage part attachment part 70 Stacking groove part 72 Step stacking Rib 74 protective sheet 76 first sheet 78 second sheet 80 locking member 2 Locking hole 84 Sheet locking hook 86 Core wire identification member 88 Member locking hook 90 First member 92 Protruding portion 94 Second member 96 Fitting hole 98 Locking hole 100 Drop tray 102 Drop cable connecting member storage Part 104 Drop cable connecting member 106 Drop cable fixing part 108 Retaining member 110 Insertion hole 112 Mounting member A Optical cable B Optical fiber core C Single core drop cable D Support line E Fan out cord F Passing core G Inserting core with connector

Claims (17)

A sleeve that is configured to be openable and closable on one side;
A core wire connecting portion storage portion is provided which is attached along the longitudinal direction on the back side in the sleeve and stores a core wire connecting portion for connecting the upstream optical fiber core wire and the downstream optical fiber core wire. A terminated rear tray,
A termination base that is covered with the sleeve and pivotally supported by a tray locking member formed in the sleeve so as to be rotatable in the sleeve around the tray locking member as an axis. A tray,
A closure body is provided,
The termination base tray is provided with a splitter tray capable of attaching a splitter that draws the downstream optical fiber core wire on the back side thereof and branches an incident optical signal,
In a predetermined position on the surface side of the termination base tray,
A branch member storage section is provided for receiving the optical signal branched by the splitter attached to the splitter tray and storing a fan out cord branch member wired from the back side to the front side of the termination base tray. An optical fiber with a connector that receives an optical signal branched by the possible first storage portion attachment portion and the splitter attached to the splitter tray and is wired from the back side to the front side of the termination base tray For connecting an optical cable, characterized in that a second storage portion mounting portion to which a connection member storage portion for storing a connection member for connecting a core wire and a downstream optical fiber core wire can be attached is provided. closure.   An optical fiber core with a connector that receives the optical signal branched by the splitter attached to the splitter tray at the second storage portion attachment portion and is wired from the back side to the front side of the termination base tray 2. A closure for connecting an optical cable according to claim 1, further comprising a connection member housing portion for housing a connection member to be connected to the downstream optical fiber core wire.   3. The optical cable connection closure according to claim 1, wherein the splitter tray is rotatably provided at a tray fixing hinge portion formed on a back surface side of the termination base tray. .   4. The optical cable connection closure according to claim 3, wherein the tray fixing hinge portion has a hinge structure capable of holding the splitter tray provided at a predetermined angle.   A cord connection member housing portion for housing a cord connection member for connecting the fan-out cord and a downstream optical fiber core wire is provided on the surface side of the termination base tray. The optical cable connection closure according to any one of claims 1 to 4.   The branching member has a pair of opposing clamping members projecting at a predetermined position on the side edge in the longitudinal direction on the bottom side, and the other branching member is clamped by the clamping member, thereby stacking them. The optical cable connection closure according to any one of claims 1 to 5, wherein the optical cable connection closure can be configured in a state.   The connecting member storage portion has a stacking groove formed at a predetermined position on the bottom surface side, and a stacking rib projecting at a predetermined position on the upper surface side. The optical cable connection closure according to any one of claims 1 to 6, wherein the stacking ribs of the connecting member storage portion can be fitted to each other so as to be configured in a stacked state.   A plurality of sheet locking hooks are formed at predetermined positions of the termination rear tray, and a protective sheet capable of protecting the passing core wire is locked to the locking hooks. The optical cable connection closure according to any one of claims 1 to 7.   The protective sheet includes a first sheet and a second sheet, and both the sheets are locked by the sheet locking hooks, and lock members formed at respective predetermined positions are mutually connected. The optical cable connection closure according to claim 8, wherein the optical fiber is enclosed and protected by fitting.   One or a plurality of member locking hooks are formed at predetermined positions on the termination rear tray, and a core identification member for holding and fixing a predetermined optical fiber core wire to the member locking hooks. The optical cable connection closure according to claim 1, wherein the optical cable connection closure is attached.   The core wire identification member includes a plurality of protrusions, a first member that allows the predetermined optical fiber core wire to be inserted into a gap between the protrusions, and a plurality of fitting holes corresponding to the protrusions. The second member provided with is connected so as to be foldable so as to face each other, and both are folded, and the plurality of protrusions are inserted into the plurality of fitting holes, so that the protrusions The optical cable connection closure according to any one of claims 1 to 10, wherein the predetermined optical fiber core wire inserted through the gap is sandwiched and fixed.   The said core wire identification member is attached to the said back tray for termination | terminus by hooking the said member locking hook in the locking hole provided in the predetermined location of the said 1st member. The optical cable connection closure according to any one of Items 1 to 11.   On the back side of the termination base tray, there is formed a drop cable connection member storage portion for storing a drop cable connection member for connecting the upstream optical fiber core and the downstream single core drop cable. The optical cable connection closure according to claim 1, further comprising a drop tray.   14. The optical cable connection closure according to claim 13, wherein the drop tray is rotatably provided at a tray fixing hinge portion formed on a back surface side of the termination base tray.   15. The optical cable connection closure according to claim 14, wherein the drop tray can be held at a predetermined angle by the tray fixing hinge.   The splitter tray and the termination base tray are removably attached to the fan-out cord and a retaining member for fixing and retaining the drop cable. An optical cable connection closure according to any one of the preceding claims.   The sleeve is composed of a split sleeve, and the sleeve surface, which is the direction in which the work can be performed depending on the installation position of the closure main body, is configured to be openable, and the sleeve stopper that holds the sleeve opened in a single opening at a predetermined position is provided. The optical cable connection closure according to any one of claims 1 to 16, wherein the optical cable connection closure is provided so as to be freely disengaged across the split sleeves.

Images