JP6190164B2 - Optical cable connection closure - Google Patents

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 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.

  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. Further, even if a termination tray capable of connector connection on the front and back surfaces is used, when working on the termination tray, for example, the operator may go to the lower side of the optical cable connection closure. It is necessary and improvement in terms of work efficiency is necessary.

  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. It is an object of the present invention to provide an optical cable connection closure that improves the work efficiency of an operator by adopting a configuration that allows the work on the base tray for termination to be performed more easily.

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: its back side pulls the optical fiber of the downstream, provided with splitter tray can be attached to the splitter for branching the optical signal incident on the surface side of the formed edge for the base tray And characterized in that is provided with a branching member containing portion for accommodating the branch member of the fan-out code are wired to the surface side from receiving the branched optical signal, the back surface side of the formed edge for the base tray by the splitter 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 splitter 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 3 is the optical cable connection closure according to claim 2, wherein the tray fixing hinge portion is configured to have a hinge structure capable of holding the provided splitter tray at a predetermined angle position. It is characterized by becoming.

Further, the invention of claim 4, wherein a optical cable connecting closure according to any one of claims 1 to 3, on the surface side of the base tray before KiNaru end, and the fan-out code, downstream A connection member storage portion for storing a connection member for connecting the optical fiber core wire is provided.

The invention according to claim 5 is the optical cable connection closure according to any one of claims 1 to 4 , wherein the branching member is opposed to a predetermined position on the side edge in the longitudinal direction on the bottom side. These pinching members are provided in a projecting manner, and by holding the other branching members with the pinching members, they can be configured in a stacked state. Furthermore, the invention according to claim 6 is the optical cable connection closure according to any one of claims 1 to 5 , wherein an upstream side optical fiber core wire is provided on the back side of the termination base tray, 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.

Furthermore, the invention according to claim 7 is the optical cable connection closure according to claim 6 , wherein the drop tray is a tray fixing hinge portion formed on the back side of the termination base tray. It is characterized by being provided so as to be freely rotatable. The invention according to claim 8 is the optical cable connection closure according to claim 7 , wherein the drop tray can be held at a predetermined angle by the tray fixing hinge. It is a feature.

The invention according to claim 9 is the optical cable connection closure according to any one of claims 1 to 8 , wherein the sleeve is formed of a split sleeve and can be operated according to 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.

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 connection member is not attached, (b) is the connection member on the right side. The attached state, (c) is a schematic view of a state in which the connecting member is attached to the left side. 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 the 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 member in 1st Embodiment of the optical cable connection closure which concerns on this invention is shown, (a) is a top view of the state which stopped the cover part, (b) is the state of the state which stopped the cover part FIG. 3C is a front view of the state where the lid is removed, and FIG. 3D is a front view of the state where the lid is removed. 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 figure which showed 2nd Embodiment of the closure for optical cable connection 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 | terminus base tray in 2nd Embodiment of the optical cable connection closure which concerns on this invention was shown is shown, (a) is a strand surface side, (b) is the structure of the tape surface side. 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. The structure of the passing core wire guide 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 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 shows the front of the termination base tray in the embodiment of the optical cable connection closure according to the present invention, where (a) shows a state in which no connection member is attached, and (b) shows the connection member. (C) is the schematic of the state in which the connection member is attached to the left side.

  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 connection member in the embodiment of the optical cable connection closure according to the present invention. (A) is a plan view of the state in which the lid is stopped, and (b) is the state in which the lid is stopped. (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. Furthermore, FIG. 7 shows the structure of the sleeve in the first embodiment of the optical cable connection closure according to the present invention, where (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 branch member storage, 30 is a branch member, 31 is a clamping member, 32 is a knob, 33 is a connection member storage, 34 is a connection member, 35 Is a closure, 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 Cable fixing part, 54 is a cable gripping tool, 56 is a hook part, 60 is an extra cable length storage part, A is an optical cable, B is an optical fiber cable, C is a single fiber drop cable, D is a support cable, E is a fan cable Shows the Tokodo.

  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. 13A, 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. 14, 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. 14A), both side walls of the cable gripping tool 54 are inserted into the corresponding fitting holes of the cable fixing portion 52 (FIG. 14B). The optical cable A is gripped by the cable gripping member 50 (see FIG. 14C).

  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.

  In addition, the optical fiber A is converged by a binding band (not shown) on the front side of the termination rear tray 12 without cutting the tension member from the upstream side toward the downstream side, and the optical fiber core B that is not connected is For example, it is preferable to adopt a configuration in which the wire is passed through while being held on the front side (not shown) of the termination rear tray 12 by a passing core wire guide 48 as shown in FIG. 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 held by the passing core guide 48.

  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.

  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, on the front side of the termination base tray 18, the branch member of the fan-out cord E that receives the optical signal branched by the splitter 24 and is wired from the front side to the back side of the termination base tray 18. A branch member storage portion 28 for storing 30 is provided. In this 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.

  Further, on the surface side of the termination base tray 18, a connecting member 34 for connecting the fan-out cord E (core wire) and the optical fiber core wire B cut out at a predetermined location from the downstream optical cable A. Is provided with a connecting member storage portion 33 for storing the. As shown in FIG. 6, the connection member storage portion 33 is attached with a rectangular lid portion 35 orthogonal to the longitudinal direction of the connection member storage portion 33 in a hinge structure formed on one end side. With the hinge structure as an axis, the lid portion 35 is rotated to cover the connection member storage portion 33, so that the storage member 34 to be stored can be prevented from coming off.

  Furthermore, as shown in FIG. 7, 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 in which the sleeve 38 is closed, as shown in FIG. 7B, 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 with reference mainly to FIGS.
FIG. 8 is a view showing a second 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, (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. 9 shows a drop tray provided in the termination base tray in the second 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. As for the reference numerals, the first is the same as the first, except that 62 is a drop tray, 64 is a drop cable connecting member housing portion, 66 is a drop cable connecting member, 67 is a drop cable fixing portion, and F is an insertion core with a connector. This is the same as in the embodiment.

  As shown in FIG. 8, 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. 13A, 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. 14, 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. 14A), the both side walls of the cable gripping tool 54 are inserted into the corresponding fitting holes of the cable fixing portion 52 (FIG. 14B). The optical cable A is gripped by the cable gripping member 50 (see FIG. 14C).

  Next, in the closure main body 36, the optical fiber core B cut out from the upstream optical fiber A at a predetermined location is connected to the downstream optical fiber core B (input line to the splitter 24 and the drop tray 62 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 houses a drop cable connection member 66 that draws the downstream optical fiber core B (input line) from the front side to 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 62 in which the member storage portion 64 is formed hooks the hook portion 56 formed at one end thereof on 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. 8B, the drop tray 62 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 62 at a predetermined angle with respect to the tray fixing hinge portion 26. With such a structure, the operator can access the drop tray 62 very easily. In the present embodiment, the tray fixing hinge portion 26 has a hinge structure. However, any hinge structure may be used as long as the drop tray 62 can be fixed.

  Subsequently, as shown in FIG. 8B, the drop tray 62 in the present embodiment draws in the insertion core F with connector connected to the upstream optical fiber core B (input line) from the surface side, A drop cable connection member storage portion 64 for storing a drop cable connection member 66 (FAS plug, FAS socket) for connecting the input line to the downstream single-core drop cable C is formed. 9A is assigned to the front side, that is, the side into which the insertion core F with connector is drawn.

  The single-core drop cable C to be connected by the drop cable connecting member 66 is dropped to the outside while being fixed by the drop cable fixing portion 67 on the back surface of the drop tray 62, 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 F with the connector is again passed from the back surface to the front surface of the drop tray 62 and 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.

  Further, the single-core drop cable C connected to the splitter 24 without being connected to the drop cable connection member 66 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 66. The line B is also passed through from the back surface of the drop tray 62.

  Furthermore, as shown in FIG. 7, 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 in which the sleeve 38 is closed, as shown in FIG. 7B, 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. 10 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. 11 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 the reference numerals, 68 represents a retaining member, 70 represents an insertion hole, and 72 represents a mounting member.

  This embodiment is an optical cable connection closure 10, as shown in FIG. 11, 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 68 is directly attached to the back side of the tray 18. The holding member 68 temporarily holds a fan-out cord E or a single-core drop cable C that is not used for connection. As shown in FIG. 10, an insertion hole 70 for inserting the cable is provided. A plurality are formed. The holding member 68 can also be provided directly on the back surface of the termination base tray 18.

  Furthermore, an attachment member 72 is formed for attachment to the splitter tray 22 and the back surface of the termination base tray 18. The holding member 68 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 72 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 68 in this way, the fan-out cable E and the single-core drop cable C that are not used for connection during work can be effectively held so as not to get in the way.

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

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 connecting member storage 34 connecting member 35 lid 36 closure body 38 sleeve 40 sleeve stopper 42 pin 43 locking groove 44 upstream side end plate 46 downstream side end plate 48 passing core wire guide 50 Cable gripping member 52 Cable fixing portion 54 Cable gripping tool 56 Hooking portion 60 Core wire extra length storage portion 62 Drop tray 64 Drop cable connection member storage portion 66 Drop cable connection member 67 Drop cable fixing portion 68 Retention member 70 Insertion hole 72 Mounting member A Optical cable B Light Aiba cord C single-core drop cables D support wire E fanout code F connector with breaking insertion core wire

Claims (9)

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 to the back surface side thereof and branches the incident optical signal , The front surface side is provided with a branch member storage portion that receives the optical signal branched by the splitter and stores a fan out cord branch member that is wired from the rear surface side to the front surface side of the termination base tray. A closure for connecting an optical cable.   2. 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.   3. The optical cable connection closure according to claim 2, wherein the tray fixing hinge portion has a hinge structure capable of holding the splitter tray provided at a predetermined angle. A connection member storage portion that stores a connection member for connecting the fan-out cord and a downstream optical fiber core is provided on the surface side of the termination base tray. The optical cable connection closure according to any one of Items 1 to 3 . 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 4 , wherein the optical cable connection closure can be configured in a state. 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. claim 1-5 optical cable connecting closure of any one, wherein a drop tray is provided with. The optical cable connection closure according to claim 6 , wherein the drop tray is rotatably provided at a tray fixing hinge portion formed on a back surface side of the termination base tray. 8. The optical cable connection closure according to claim 7 , wherein the drop tray can be held at a predetermined angle by the tray fixing hinge. 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 The optical cable connection closure according to any one of claims 1 to 8 , wherein the optical cable connection closure is provided between the split sleeves so as to be freely disengaged.

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