JP4960047B2 - Optical cable connection closure - Google Patents

Description

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

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

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

However, in a communication network using an optical cable, there is a demand for an optimum wiring form of the optical access network, good workability of the connection wiring, and provision of an optical access service quickly and inexpensively. However, when determining the closure installation direction from the necessity of connection wiring, it is necessary to branch from the upstream telecommunications carrier side to the downstream subscriber side and connect it to the downstream side, so that the work direction is limited. It was.
For this reason, the optical cable connection closure has a symmetrical configuration in the configuration corresponding to the upstream side and the downstream side, and it can be used regardless of whether the carrier side is on the upstream side or the downstream side (left and right side). Therefore, the closure must be provided with an end tray and a core gripper base with an extra core length extra storage section in the closure, and the end plate of the same form and multi-grommets must be installed. It is necessary to install on both the left and right sides, and the size of the closure increases, and if it cannot be fixed in advance or if it has been fixed in advance, it must be used with a closure that limits the work direction that matches the upstream and downstream sides. In the unlikely event that pre-fixing is not possible, it is necessary to change the fixing position during connection work at the site, which is cumbersome and efficient use and processing of optical access system equipment. In particular, as the cable density increases, the number of cores increases, or the transmission speed increases, it is time consuming to change the pre-fixed closure to the carrier side. As a result, there is a problem that handling work, work associated with connection branching, and wiring arrangement are difficult.
Also, in the branching operation of the optical cable, in order to pull down the drop optical cable, an unusable core wire is generated, which is uneconomical and the core wire cannot be returned to the main line again. There was a problem that the equipment could not be used efficiently and economically.

  The present invention has been made in view of these conventional circumstances, and in determining the installation direction of the closure on the upper side (upstream telecommunications carrier side), the lower side (downstream subscriber side), As a configuration that can be handled by repeating the entire pre-fixed closure in the opposite direction, the core wire connection work at the site is simplified and the core wire gripper base is installed on one side in the assembled state of the closure. Therefore, it is not necessary to replace the connection fixing part and the connection work can be done easily, and the fixing work of the support line and tension member can also be accessed from the top surface of the closure. It is not necessary to replace the connector fixing base on the upper side and lower side. Single-core operation is possible without affecting the wires, and the empty core wires can be used as necessary single-core wires for subsequent user participation, etc., and the use efficiency of the core wires can be improved. Since it is a connectable configuration, it can greatly improve workability including maintenance work such as connection work and core wire storage work, connection status inspection and repair, etc. In addition, it can protect the core wire separated into single cores, The optical cable can be used effectively, can be extended to the lower part of the core wire, can be used for aerial loop wiring, and once the branched core wire can be returned to the main line, optical access services can be provided quickly and inexpensively. Necessary for multi-functional requirements by providing multiple trays on the tray fixing base that can rotate and detach freely with different functions for storing the drop and branch connection wires and their connector connection parts. Easily add additional each tray that is intended to be removed can be handled easily in a compact overhead or ground mounting optical cable connecting closure.

  In order to solve the above-described problems, the present invention provides a connector housing portion for housing a connector for connecting an optical fiber core wire, and a core wire extra length of a branched optical fiber core wire provided adjacent to the connector housing portion. A termination tray having a core wire extra length storage portion for storing the core wire and a wiring gripper base for routing the branched optical fiber core wires housed in the core wire extra length storage portion are disposed in the closure body. And an optical cable connection closure provided on the left and right sides of the frame, wherein the sleeve of the closure body is configured to be openable so that one side and / or both sides can be freely opened, and both sides of the frame for fixing the termination tray installed in the sleeve A cable tension member fixing portion is provided on the upper surface so that the fixing portion can be fixed from the upper surface side. And hold core wire connection portion of the carrier side and the subscriber side, to deploy the multi-purpose connecting portion housing portion that a housing part between the connecting part holder.

  According to the present invention, the wiring grip base is configured to be pre-fixed downstream in a set state, and the branch optical fiber cores housed in the core wire extra length housing part are gripped by wiring. A connector connected to the branch optical fiber core is detachably attached to the connector housing section, so that the optical fiber core wire connection and storage are all made into a connector, and the connection work and the core wire storage work, as well as the inspection of the connection status The workability has been greatly simplified, including maintenance work such as repairs, and there is no need to replace the wiring gripper base in the direction of the closure installation. The termination tray for storing the tray can also be a tray that is required for a multifunctional request.

  Further, the optical cable connection closure according to the present invention is characterized in that the termination tray is provided with a plurality of vertical walls arranged in a vertical grid at intervals to form a connector storage portion, and the connector storage portion The connector fixing base is provided to be rotatable, and a multi-purpose connecting part storage part for storing a connection part for full connection, a holding core wire connection part, and a connection part holder is arranged in parallel with the connector storage part of the core wire connection part. As a result, the optical cable can be used effectively, it can be used for extending the lower part of the core wire and aerial loop wiring, and the core wire once branched can be returned to the main line again. Can be easily performed, and workability can be greatly improved.

  Further, in this optical cable connection closure, the connector housing portion is provided with a connector fixing base on which a connector consisting of a socket and a plug can be detachably inserted, and can be rotated by a support pin. If it is necessary to switch to a tray with another function by arranging the wire connector or sheath connector in a vertical layer, it can be easily distinguished. Simplifying the core wire connection work at the site, the handling workability can be greatly improved including maintenance work such as connection work, core wire storage work, and inspection and repair of connection status.

  Further, according to the present invention, the sleeve is composed of a split sleeve that is provided so that one side or / and both sides can be opened freely, and the sleeve surface in a direction in which the work can be performed can be opened depending on the position where the closure is installed. It is possible to provide a sleeve stopper that can maintain the open state of the sleeve that opens without expansion. In other words, the sleeve stopper that holds the sleeve opened in one or both openings in a predetermined position is detachably provided across the divided sleeves, so that the fixing work of the support wire and the tension member can be easily performed from the upper surface. It can be accessed, and the sleeve surface in the direction in which the work can be performed is opened depending on the position where the closure is installed, so that the work surface is not limited, so that the handling becomes easy and a good connection work can be performed.

  Further, in the present invention, the end face plate provided in the sleeve is provided with an extended side wall portion having a cable insertion path for inserting an optical cable, and a multi-grommet having a branch optical fiber core wire insertion hole is installed only on the lower side, and the upper side is Since it is blocked by the blank panel, the configuration of the optical cable connection closure can be reduced in weight, and the configuration can be made more compact and inexpensive, and the safety configuration can suppress the pulling and bending of the core wire.

  In the termination tray according to the present invention, the connector storage portion stores the connector via the rotatable connector fixing base, so that the wire or jacket wire can be moved up and down depending on whether the inclination for fixing the connector is upward, horizontal or downward. The wiring route can be clarified by separating the layers, and the connector housing required for multi-functional requirements can be easily added, added, removed, and handled easily. For example, when all the cores are connected, in the case of eight cores, a connector fixing structure that accommodates the eight connecting portions in the center is adopted. Further, in the case of 24 cores, the all-contact holder is attached to the 6 grooves of the connector housing portion to provide a connection portion fixing structure for housing the 24 connection portions. Moreover, it is set as the connector fixing structure which has a location which hold | maintains two strand plugs (connectors) in the surface side center part. Furthermore, a termination tray having a connector fixing structure having a portion for holding two jacket wire plugs (connectors) in the central portion on the back side is preferably used as a termination tray, and is shifted to a position where connection work is easy in the termination tray. Thus, the connector can be fixed, and the inspection and repair work can be simplified.

  In the closure for connecting an optical cable in the present invention, a normal end face plate may be provided, but the end face plate provided in the closure is provided with an extended side wall portion having a cable insertion path for inserting various cables. Thus, various cables such as a main cable and a drop cable may be sorted and inserted and used as an end face seal having a waterproof function when the cable is accommodated in the closure, so that the drop cable and the DS cable can be safely waterproofed.

In the optical cable connection closure according to the present invention, the termination tray for protecting and storing the connection portion of the optical cable core and the connection excess length portion is provided on the tray fixing base, and the tray is engaged with the locking piece. Wiring can be handled as a structure that can be fixed and maintained by a locking part consisting of a receiving part, and it is easy to pull down only the required single core wire from the main line or return it to the main line at any closure in light demand . For example, a multi-core optical fiber ribbon is separated from a single optical fiber, and only one or more cores are selected and connected to a pull-down cable, and the other is pulled through and sent to the bottom as a single fiber. It becomes possible to hold it so that it can be included. Further, the extra long core wire necessary for the connection work can be stored together with the connection portion.
Unoccupied cores can then be used as necessary single cores for subsequent users, and other tasks such as connecting other cores, checking connection status, repairing, checking and adjusting are also integrated. And can be done very easily.

  In addition, the connector in the termination tray is arranged to be displaceable by a connector fixing base in the connector storage portion, can be converted into upper and lower layers at a predetermined position, and is divided into layers by connection unit, and the core wire connection portion is fixed. Further, since the extra length of the core wire can be handled and stored while ensuring the radius of curvature, it is stored with a degree of freedom in absorbing the extra length of the core wire and used in a form that does not adversely affect the transmission characteristics.

  The present invention relates to a connector storage portion for storing a connector for connecting an optical fiber core wire, and a core wire extra length storage for storing a core wire extra length of a branched optical fiber core wire provided adjacent to the connector storage portion. An optical cable connection in which a termination tray provided with a portion and a wiring grip base for wiring a branched optical fiber core housed in the extra wire length housing section are provided asymmetrically in the closure body A closure for the cable tension member on the upper surface on both sides of the frame for fixing the termination tray installed in the closure body The cable is provided as a structure that can be fixed from the side, and the termination tray includes a connector housing portion for a plurality of core wire connection portions, a connection portion for all connections, and a holding core on the telecommunications carrier side and the subscriber side. By deploying the multipurpose connection part storage part as the storage part of the connection part and the connection part holder, the closure of the upper side (upstream telecommunications carrier side) and the lower side (downstream subscriber side) When deciding the installation direction, the entire pre-fixed closure can be repeated in the opposite direction, making it possible to respond immediately, simplifying the core connection work on site, Since the core wire gripper base is installed on one side, it is not necessary to replace the connection fixing part and the connection work can be done easily, and the support work of the support wire and tension member can also be accessed from the top surface of the closure. When pulling out wiring and branch connection wiring, it is not necessary to replace the connector fixing base on the upper side or lower side, and it is possible to connect the connector if it is fixed in advance on the upper side. The single core can be operated without affecting the other cores, and the available cores can be used as necessary single cores for subsequent user participation, etc. The wire connection / storage can be connected to the connector, so the workability is greatly improved, including connection work, core wire storage work, and maintenance work such as inspection and repair of the connection status. The optical access service can be used effectively, the optical fiber can be used effectively, the lower part of the core can be extended, the aerial loop wiring can be used, and the branched core can be returned to the main line again. It can be provided at low cost, and multiple trays with different functions for storing drop wiring and branch connection wiring and their connection parts can be rotated and detachably provided on the tray fixing base, so that multi-functional requirements can be met. necessary Each of the trays can be easily added, added, removed, and can be handled easily and compactly as an optical cable connection closure for aerial or ground mounting.

  In the present invention, when drawing wiring from an optical cable and branch connection wiring, single core operation can be performed without affecting other core wires, and a free core wire can be used for subsequent user subscriptions. Use as a core wire to increase the efficiency of use of the core wire, and the connection and storage of the core wire can be connected to the connector so that the workability can be greatly improved, including connection work, core wire storage work, and maintenance work such as connection status inspection and repair. In addition to the improvement, it can protect the cores separated into single cores, enable the effective use of optical cables, can be extended to the bottom of the cores, and can be used for aerial loop wiring. Optical access services can be provided quickly and inexpensively, such as being able to return to the main line, and connection wiring with different functions for storing the drop wiring and branch connection wiring and its connector connection can be easily made. It is possible to handle simple closure.

  In the optical cable connection closure according to the present invention, the wiring gripper base is configured to be pre-fixed downstream in the assembled state, and the branched optical fiber cores housed in the extra wire length housing part are wired. The connector connected to the branch optical fiber core is gripped and detachably provided in the connector storage portion, so that the optical fiber core connection and storage can be performed as a whole connector so that the connection work and the core wire storage work can be performed. The workability has been greatly simplified, including maintenance work such as inspection and repair of the connection status. There is no need to replace the gripping base for wiring in the direction of the closure installation, and the drop and branch connection wires and their connectors The termination tray for storing the connection portion can also be a closure necessary for a multifunctional request.

  Further, in the optical cable connection closure according to the present invention, the termination tray is provided with a plurality of vertical walls arranged in parallel in a vertical grid pattern at intervals to form a connector storage portion, and the connector storage portion includes the connector. A fixed base is provided so as to be rotatable, and a multi-purpose connection part storage part that houses the all-connection connection part, the holding core wire connection part, and the connection part holder is arranged side by side in the connector storage part of the core wire connection part. The optical cable can be used effectively, can be used to extend the lower part of the core wire, can be used for aerial loop wiring, and can return the branched core wire to the main line again. A function excellent in work can be exhibited, work in the termination tray can be easily performed, and workability can be greatly improved.

In this optical cable connection closure, the connector housing portion is provided with a connector fixing base on which a connector composed of a socket and a plug can be detachably inserted, and can be rotated by a support pin. When it is necessary to switch to a tray with another function by using a structure that can be fixed and can be stored separately by layering the wire connection connector or the sheath connection connector in the vertical direction, it can be easily distinguished and used on site Simplify the core wire connection work, greatly improve handling workability including connection work, core wire storage work, and maintenance work such as inspection and repair of connection status, and safety after connector installation set Can be easily secured, and it also helps to prevent the drop cable from dropping when connecting cables to each tray or SS connection. Tsu can contribute to tension and wiring protection it is possible to suppress the generation of bending. The vertical wall is provided with a locking groove for releasably locking the support pin, and the vertical wall has a locking projection for releasably locking the connector fixing portion. The connector fixing portion is provided with a locking recess that engages with the locking protrusion, so that the connector housing portion has a locking groove formed in the vertical wall for installing the connector fixing portion, Easily accommodates thin core wires and thick optical cables individually as a structure that has a vertical relationship with a step in the height direction at a position away from the locking projection and can hold a part of the connector fixing part in layers. This makes it easy to install.

  Further, the sleeve of the closure body is composed of a split sleeve that can be opened on one side or / and both sides, and the sleeve surface can be opened depending on the position where the closure is installed, and the sleeve is removed during the work. By deploying a sleeve stopper that can maintain the open state of the sleeve that expands without any problem, the support line and tension member fixing work can be easily accessed from the top surface, and the sleeve surface in the direction in which the work can be performed depending on the closure installation position Since it is opened and the work surface is not limited, handling becomes easy and good connection work can be carried out, and maintenance work such as inspection, repair, confirmation and adjustment of wiring can also be facilitated.

  Further, according to the present invention, the connector in the termination tray is disposed so as to be displaceable by the connector fixing base in the connector storage portion, can be converted into upper and lower layers at a predetermined position, and is divided into layers by connection units. The core wire connection part is fixed, and the extra length of the core wire can be handled and stored with a radius of curvature secured, so it can be stored with a degree of freedom in absorbing the extra length of the core, and the transmission characteristics are not adversely affected. It is used in the form, the core wire at the time of single core separation work is easy to see, the wiring work is easy and can be done quickly, it can demonstrate the functions excellent for processing and storage work for single core operation, Single core wire can be safely protected.

  Further, in the present invention, the end face plate provided in the optical cable connection closure is provided with an extended side wall portion having a cable insertion path for inserting an optical cable, and a multi-grommet having a branch optical fiber core wire insertion hole is installed only on the lower side, Since the side is closed by a blank panel, the structure of the optical cable connection closure can be reduced in weight, making it more compact and less expensive, as well as a safe structure that suppresses the pulling and bending of the core, and the main cable and drop It is used as an end face seal with a waterproof function when a cable such as a cable is sorted and inserted and accommodated in a closure, and the drop cable or DS cable is waterproofed to increase safety and improve handling of separated wiring.

To illustrate embodiments of the present invention with reference to the drawings, the closure body 5 shown in FIGS. 1 to 3 is integrally connected to a hinge portion 5 ₁ openable consist configured sleeve, the optical cable a sealing member An end face plate 20 to be inserted through is detachably provided at both ends. (Figure 1)
Then, this closure body 5, a connector housing section 1 for accommodating the connector A for connecting the optical fibers a _1, for accommodating the core wire extra length provided adjacent to the connector receiving portion 1 A termination tray 3 having a core wire extra length storage portion 2, and a wiring gripper base 4 for routing the branched optical fiber core wire a ₂ stored in the core wire extra length storage portion 2. A frame that is provided asymmetrically in the closure main body 5, wherein the sleeve of the closure main body 5 is configured to be openable and closable on one side and / or both sides, and a frame for fixing the termination tray 3 installed in the closure main body 5. A cable tension member fixing portion 22 (TM gripping portion) can be fixed to the upper surface on both sides of 18 from the upper surface side. Contact A plurality of optical fiber core wires, a multi-purpose connection portion storage portion serving as a storage portion for the connection portion holder 25 and the holding core wire connection portion 24 on the communication carrier side and the subscriber side. A necessary optical fiber core a ₁ is cut out from an arbitrary position of the optical cable a having a ₁ and a branch cable is connected, and the remaining optical fiber core is stored as it is without being cut. .

The optical cable a is introduced and led out into the closure main body 5 through the end face plate 20, and is held by the cable gripping portion 21 and the cable TM gripping portion 22 (cable tension member gripping tool), and the optical fiber core of the optical cable a. The wire a, for example, a single core wire or a tape core drawn from the cable is connected to the DS / R / TD cable via the termination tray 3 on which a plurality of connectors A serving as connecting portions of the optical fiber core a ₁ can be provided. It is connected to the branched optical fiber b, and is used as a termination tray 3 for organizing the connectors A and the extra long cores at the respective connection portions as a configuration enabling connector connection.

The wiring gripper base 4 is configured to be pre-fixed to the downstream side in the assembled state, and the branching optical fiber core wire b stored in the core wire extra length storage portion 2 is gripped and the branching is performed. A connector A connected to the optical fiber core b is detachably provided in the connector housing 1.
In this case, the connector storage portion 1 includes a plurality of vertical walls 6 arranged side by side in a vertical grid pattern on the termination tray 3 as a connector storage portion, and a connector A including a socket and a plug is provided. A connector fixing base 8 that can be detachably inserted is rotatably provided by a support pin 7, and the support pin 7 can be pre-fixed upstream in the assembled state. It is good to make it the structure which can be divided and accommodated by dividing into a layer in the up-down direction. Are arranged in parallel in the connector housing portion.

The sleeve of the closure body 5 is composed of a split sleeve that can be opened on one side or / and both sides, and the sleeve surface can be opened depending on the position where the closure is installed. A sleeve stopper 26 that holds the formed sleeve in place can be detachably disposed across the divided sleeves, and the open state of the sleeve that can be expanded without removing the sleeve during operation can be maintained. The member fixing operation can be easily accessed from the upper surface. (FIGS. 2 and 3)
For example, the closure body 5 has a flange having been double door configured to be able to consist sleeve which is integrally connected to a pair of hinge portions 5 _1, 5 _1, the tip end surfaces as shown in FIG. 3 pins 26 ₁ was paired projecting locking groove 26 ₂ fitted to the pin 26 ₁ is provided with freely disengaging the sleeve stopper 26 provided at both ends, in the closed state of the sleeve, the sleeve stopper 26 were refer to locking groove 26 _{and second} end free (Fig. 3a), one in the state opening the work surface, Hamagogakari the pin 26 ₁ of the sleeve opening the locking groove 26 _{and second} end of the sleeve stopper 26 sealed (Figure 3b), in the state opening the other work surface, sealed fit engagement the pin 26 ₁ of the end sleeve opened engaging groove 26 ₂ of the sleeve stopper 26 (FIG. 3c), further the casement In the state Pin ₂₆ 1 ends the locking groove 26 ₂ a pair of sleeves each of paths 26, 26 ₁ are sealed fit engagement (FIG. 3d).

In this case, splitting the sleeve of the closure body 5 is adapted to be opened and closed a working surface as convenience well corresponding to the operation of connecting the core of the optical cable a, at the time of sealing engagement portion 5 ₂ to the dividing plane In addition to strengthening the fixing performance with the fitting structure of the fastening band 5 ₃ , for example, a locking portion at the tip can be provided so that it can be detachably locked to the sleeve so that the separation surface can be securely pressed. Good.

The fixing portion 22 of the cable tension member can be fixed from the upper surface side as a bolt tightening structure. For example, the cable outside the convex walls 22 ₂ with a tooth groove 22 ₁ to insert an object with a pair opposed projecting from the frame 18, the tooth groove 22 ₂ on the convex wall 22 ₂ as shown in FIGS. 4 and 5 It fitted covering the lid 22 ₃ with a tooth facing, by fitting the cable jacket between the tooth by tightening the lid 22 ₃ by bolts 22 _4, fixed combines retaining function It is good to do so.

As the optical fiber core a ₁ , a multi-core or 4- to 8-core tape core housed in the slot groove of the optical cable a can be used, and the branch cable is a single core for drawing into each home. A drop cable using a multi-fiber ribbon cable can be used for drawing into an apartment house such as a drop optical fiber or a condominium.
Furthermore, an interruption cord or the like with connectors A attached to both ends can be used for connecting the optical cables that have been cut off to the branch cable. In addition, as the connector A, a connector composed of both a socket and a plug is used, and since various types of branch cables are used, various types of plugs are used.

As the connector housing section 1 in the termination tray 3, parallel to deploy vertically the grid-shaped vertical wall 6 is opened multiple intervals, forming a through hole ₆₁ that the connector A is plugged into the gaps of the plurality of rows , provided rotatably by a support pin 7 of the connector fixed base 8 to be fitted into the through hole _61, there an arrangement state in the gap between the connector fixing base 8 so as to be inclined convert upward or downward . In order to detachably support the support pin 7, a single or a plurality of locking grooves 9 are provided in the vertical wall 6, for example, in a staggered manner, and the connector fixing base 8 is detachably locked. For this purpose, the connector fixing base 8 is provided with a locking recess 11 that engages with a locking projection 10 provided on the vertical wall 6, and the connector fixing base 8 can be directed upward, horizontally, or downward to the vertical wall 6. In this way, it is supported so as to be rotatable. (Fig. 6)
In this case, the connector housing portion 1 is stepped in the height direction at a position where the locking groove 9 formed in the vertical wall 6 for installing the connector fixing base 8 and the locking projection 10 are separated. As a configuration that can hold a part of the connector fixing base 8 in layers, it is easy to accommodate a thin core wire and a thick optical cable individually, and an assembling operation can be simplified.

  As shown in FIG. 6, the locking protrusions 10 are provided at symmetrical positions on both sides of the vertical wall 6 so that the inclination direction of the connector fixing base 8 corresponds to either the upstream side or the downstream side. It is preferable that the engaging recess 11 of the connector fixing base 8 can be engaged with the one engaging projection 10 and set so that the side is downstream. Further, in operation, the connector fixing base 8 can be moved by rotating about 20 degrees upward with the locking protrusion 10 as the center when the wire is placed [horizontal holding upper layer arrangement, FIG. 6a]. [Fig. 6b] On the other hand, in the case of the outer jacket [lower layer arrangement when holding downwardly inclined, Fig. 6c], it is preferable to rotate about 45 degrees downward about the locking projection 10 and open [Fig. 6d]. .

The optical cable a is introduced and led out into the closure main body 5 through the end face plate 20, and is held by the cable gripping portion 21 and the cable TM gripping portion 22 (cable tension member gripping tool), and the optical fiber core of the optical cable a. A single core wire or a tape core wire drawn from a wire a, for example, a cable is connected to a DS / R / TD cable or branch via a termination tray 3 on which a plurality of connectors A serving as connecting portions of the optical fiber core wire a ₁ can be provided. It is connected to the optical fiber b and is used as a termination tray 3 for organizing the connectors A and the extra long cores at the respective connecting portions as a configuration enabling connector connection.

The wiring gripper base 4 is configured to be pre-fixed on the downstream side in the assembled state in the assembled state, and includes a termination tray 3 having a core wire extra length storage portion 2, and the core wire extra length storage portion. 2 is provided with a wiring gripper base 4 for routing the branched optical fiber core wire a ₂ housed in 2 in the closure main body 5 asymmetrically in the left-right direction. A connector A connected to the branch optical fiber core b is detachably provided in the connector housing 1 by holding the branch optical fiber core b.
In this case, the connector storage portion 1 includes a plurality of vertical walls 6 arranged side by side in a vertical grid pattern on the termination tray 3 as a connector storage portion, and a connector A including a socket and a plug is provided. A connector fixing base 8 that can be detachably inserted is rotatably provided by a support pin 7, and the support pin 7 can be pre-fixed upstream in the assembled state. It is good to make it the structure which can be divided and accommodated by dividing into a layer in the up-down direction. Are arranged in parallel in the connector housing portion 1.

Further, the termination tray 3 having the connector housing portion 1 includes a connector housing portion 1 for housing the connector A serving as a connection portion of the core wire a of the optical cable A and a core wire extra length housing portion 2 for housing the core wire surplus length. Are used as a lower extension termination tray, a DS / R / TD termination tray, or a drop termination tray.
The termination tray 3 has a two-layer structure, for example, a connector fixing base 8 that is rotatably provided and is used by being divided into upper and lower layers, or stacked and assembled, and is built in the closure main body 5 so as to perform wiring processing work. It is easy to do.

  In the optical cable connection closure of the embodiment, the end face plate 20 provided in the sleeve of the closure main body 5 is provided directly at the side end as shown in the example of FIG. 1, or the cable insertion path for inserting the optical cable as shown in FIG. It is also possible to provide an extended side wall portion with a multi-grommet 27 having a branch optical fiber core wire insertion hole only on the lower side, and the upper side is closed by a blank panel 28 (FIG. 2), The configuration of the optical cable connection closure can be reduced in weight, and a more compact and inexpensive configuration is preferable.

A connector mounted in the connector housing portion 1, a fitting hole ₈₁ of the connector A to the connector fixed base 8 can removably furnished be provided in correspondence with the connector socket, removably deploy connector socket It is good to have a configuration that can be used. (Fig. 7)
That is, the connector fixing base 8 consists sectional inverted U-shaped field plastic support frame pieces, a pair of fitting holes 8 ₁ which also serves as the extrusion hole of the connector A, knob on both sides piece 8 with _2, the support pins 7 of the inclined holding support pins and leveling support pins projecting from the vertical to the knob piece ₈₂ is provided, formed in the vertical wall 6 to select one of the support pins 7 locking It is the connector a, which fitted into the fitting hole ₈₁ on connector fixing base 8 hermetically fitted engagement in the groove 9 to be rotatably supported upward or downward to the termination tray 3.
The disengagement of the support pin 7, the support pins 7 when let go fit inserted into position engaging groove 9 between the vertical wall 6 attracts picking knob piece ₈₂ with a finger tip fits into the locking groove 9 can be set by, may be shifted to remove the support pins 7 by holding with fingertips a knob piece ₈₂ also when removed from the locking groove 9, it is possible to perform the disengagement operation easily.
If the locking grooves 9 are provided on the parallel vertical walls 6 in a staggered manner, the connector fixing base 8 is arranged with a slight shift, so that it is easy to handle and hold the connector and hold the connector up and down. Thus, workability can be improved.

Furthermore, the connector socket of the connector A to removably deploy the connector fixed base 8 is fitted a connector socket on one of the fitting hole ₈₁ and fitted with slide along the base, the locking piece the tip portion of or the locking piece is pressed into the other party of the fitting hole ₈₁ may be press-fit locks the locking hole, further a guide groove formed on both outer side surfaces of the connector socket, fitted on ridge slide The connector socket 16 may be used for preventing the connector socket 16 from falling off.

Further, the connector A in the termination tray 3 is disposed so as to be displaceable by the connector fixing base 8 in the connector storage portion 1 and can be converted into upper and lower layers at a predetermined position, and is divided into connection units. The connection part is not fixed, and the extra length of the core wire can be handled and stored with a radius of curvature secured, so it can be stored with a degree of freedom in absorbing the extra length of the core wire and does not adversely affect the transmission characteristics. Used in
Further, the connector housing portion 1 is formed by forming a plurality of rows of fitting grooves for housing the connector A between the vertical walls 6, for example, 6 to 8 rows. 24 or multi-purpose grooves 12 provided in the vertical wall 6 in order to lock the connection part holder 25 in a freely detachable manner. The multi-purpose grooves 12 are arranged in parallel. In order to hold the holding core wire connecting portion 24 or the connecting portion holder 25, a pop-out preventing claw 13 and a rattling preventing rib 14 are provided so as to hold the wire gripping plug 15 or the jacket wire gripping plug 16. be able to. [FIGS. 8 and 9]
In this case, the multi-purpose groove 12 is usually provided with a splice fixing portion 19 so that four splices D can be accommodated per groove (two rows and two stages), but two multi-purpose connection portion holders 25 are attached. Can also be used.
Then, when holding the core wire, the connection holder 25 is removed and the wire gripping plug 15 or the sheath wire gripping plug 16 is gripped, but both the upper surface and the lower surface of the termination tray 3 are utilized. It is preferable that the grip plug 15 is retained on the upper surface of the termination tray 3 and the jacket wire grip plug 16 is retained on the lower surface (back surface) of the termination tray 3. At this time, the latch portion of the plug is fitted into the hole of the termination tray 3 so that the back and forth movement is suppressed. [Fig. 9]
Incidentally, when it is necessary to arrange the SC adapter 25 _2, it is preferable to install the SC adapter holder 25 ₁ in the multi-purpose grooves 12 [Figure 10].

  The termination tray 3 is a molded product that is integrally molded or each molded with a synthetic resin, and has a substantially rectangular outer shape. The tray is placed on the frame 18 or attached to the tray mounting portion, and The tray is fixed in the closure body 5 while being kept in a horizontal state.

An example of the closure main body 5 provided with end face plates 2 fitted to both end wall fitting portions of the sleeve of the closure main body 1 will be described. The optical cable a and the end face plate 2 via a spacer (not shown) The support line c is penetrated and fixed by the cable gripping part 21 and the TM gripping part 22.
Further, derived from the end plate 2 is connector processed optical fiber a ₁ termination tray 3 derived from the optical cable a to a cable for debiting branch optical fiber b by drop cables or DS cable, tape heart Wired as a line. (FIGS. 1 and 2)

The optical cable connection closure shown in FIG. 1 is installed in the tape core cable route, and the optical cable a separated as shown in FIG. In order to make the connector connectable, the optical cable can be connected by the optical fiber core a ₁ having a connector plug and a connector socket at the terminal and the branched optical fiber core b. The core wire connection and storage are all modularized.

Also, the closure body 5 has a configuration in which by a sleeve that can be halved, which is hinged part 5 _1, as a sleeve open holder can adjust the opening state of the sleeve to be expansively opened, for example the sleeve stopper 26 such as FIG. 3 It is preferable that the closure main body 5 is fastened to be connected via a connecting mechanism having a locking portion at the terminal so that the internal sealing performance of the closure can be maintained. If the sleeve stopper 26 is used, the sleeve is removed during operation. It is also possible to maintain the open state on the work side without any trouble and to continuously adjust the degree of opening, and to eliminate the obstructive member on the work side and use it in a form that is easy to handle.

Further, a cable seal adapter is preferably detachably attached to the end face plates 20 provided at both ends of the closure body 5. The end plate 20 provided in the closure main body 5 includes a portion having a cable insertion path for inserting the optical cable a and a cable seal adapter that can be opened and closed in half, and the cable seal adapter is detachable by a holding frame piece. Is attached to the closure body 5.
The cable seal adapter is attached to a waterproof end face seal for a cable stored in a closure, and may be provided with a plurality of core insertion passages with slits and seal pieces for inserting various cables. It is preferable to use a structure in which the attached cable can be attached and detached, or a structure in which a waterproof structure is formed by a slit provided with a thin film at each cable introduction port.

  Further, in the termination tray 3, guide ribs and side walls may be selected and divided in the connector storage portion 1 and the extra length core wire storage portion 2 as necessary. The pawl is molded integrally so that the extra long core wire and the connector that becomes the core wire connecting portion can be securely held in the tray, or the connector storage portion 1 or the core wire extra length storage portion 2 is organized and stored. However, the bending of the fiber core wire from the cable insertion portion is extremely small, so that twisting when the core wire is stored can be prevented, and high reliability can be obtained with safe and high density storage.

  Further, the termination tray 3 provided in this embodiment is fixed to the center portion of the frame 18 and is prevented from moving from the single-core separation work space so that the conductors in the single-core separation work can be easily seen and the wiring work is easy and quick. In addition, the single core wire can be safely protected, and each tray can be freely mounted and the core wire can be pulled down, so that it can easily cope with aerial loop wiring. At the same time, the core wire once branched can be returned to the main line again, and the separation, protection, and storage operations of the single core can be greatly improved.

  Furthermore, according to this embodiment, since the inner structure of the closure body 5 is asymmetrically formed, it contributes to the compactness of the closure and can further simplify the termination tray required for function requirements. In this way, the connection function and the drop function for each single-core wire can be integrated and safely arranged, and it is effective for connecting an aerial or ground cable and a drop optical fiber cable or a collective drop optical fiber cable. It can be used to protect the connection portion of the optical cable, accommodate the extra length of the core wire, increase the use efficiency of the core wire, and make the optical cable connection closure excellent in single-core operation and work workability.

  Furthermore, in the configuration of the termination tray 3 of the embodiment, it is a configuration that enables connector connection, and connection work, core wire storage work, and inspection / repair of connection status, etc. by all connectorization including modularization in the tray, etc. The maintenance work is easy to perform, and the workability is excellent. The connection function and drop function for each single core wire are integrated, and the storage and storage and the increase / decrease for each core wire can be easily performed. It is possible to provide an optical cable connection closure that is easy to handle, such as being able to accommodate a connection portion. In addition, optical cable connection and switching, branch connection work, and recollection work can be easily performed, and the optical fiber cores housed in any connector housing can be quickly taken out after the core wire connection work. It is easy to readjust and repair the connection part, and the workability can be greatly improved.

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

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

Note that the connector fixed base 8 in the embodiment of the present invention, for example, the support pins 7 of the lower in the knob piece ₈₂ is fitted into the locking groove 9 of the vertical wall 6, vertical wall a locking recess 11 6 is inserted into the locking projection 10, the connector fixing base 8 is held in a horizontal state, and the connector A on the connector fixing base 8 is arranged in the upper layer. [Fig. 6a]
The upper support pin 7 in the knob piece ₈₂ is fitted into the locking groove 9 of the vertical wall 6, an engagement recess 11 of the connector fixed base 8 when fitted into the locking projection 10 of the vertical wall 6 downward The connector A that is held in an inclined state and is on the connector fixing base 8 is disposed in the lower layer. [Fig. 6c]
The former can be selected for the wire, and the latter can be selected for the outer sheath to distinguish the upper and lower layers, so that the thin core can be protected and the workability can be improved.
In this case, for the layered arrangement of the connector A on the connector fixing base 8, the locking groove 9 formed in the vertical wall 6 for installing the connector fixing base 8 and the locking projection 10 are separated from each other. The selection of the support pins 7 projecting up and down on both sides of the connector fixing base 8 should be taken into consideration.

In the termination tray 3 according to the present invention, the connector housing portion 1 houses the connector A via the rotatable connector fixing base 8, so that the inclination for fixing the connector A is upward, horizontal or downward depending on the wire or jacket. Lines can be separated into upper and lower layers, wiring routes can be clarified, and the connector housing portion 1 required for multi-functional requirements can be easily added and removed, making it easy to handle. For example, when all the cores are connected, in the case of eight cores, a connector fixing structure that houses eight connecting portions in the center is adopted.
Further, in the case of 24 cores, the holder for full contact is attached to the 6 grooves of the connector storage portion to provide a connector fixing structure for storing the 24 connection portions. Moreover, it is set as the connector fixing structure which has a location which hold | maintains two strand plugs (connectors) in the surface side center part.
Further, it is preferably used as a termination tray 3 having a connector fixing structure having a portion for retaining two jacket wire plugs (connectors) at the center on the back side, and is easily positioned in the termination tray 3. The connector can be fixed by changing the position, and the inspection and repair work can be simplified.

The termination tray 3 forms a connector storage portion 1 in the center, and is provided with a cord extra length storage portion 2 adjacent to one side of the connector storage portion 1, and a wiring gripper base 4 on one side. Engageable / detachable core wire protection sheets 17 are provided on both sides, and are fixed to a frame 18 fixed in the closure body 5.
As shown in FIG. 1a, the extra wire length storage portion 2 adjacent to the connector storage portion 1 of the termination tray 3 is connected to the single core wire of the branched optical fiber core wire b when it is connected to a plug. When a drop cable with a 4-core ribbon is used as a branching cable to store the extra length of the core, the extra length of the separated single-core is used because the tape is disconnected and attached to the connector. Is accommodated in the extra length housing part 2, but the difference in length that occurs when each single core of the tape core is separately guided to the connector housing 1 is absorbed and allowed for each single core. A bending radius larger than the bending radius can be secured.

  Further, the wiring gripper base 4 provided on the termination tray 3 is a member for gripping the drop cable. The branch optical fiber core that grips the outer cover of the drop cable and is separated from the tape core of the drop cable. The line b is wired to the core wire extra length storage part 2 of the termination tray 3.

Further, the core protection sheet 17 provided detachably on the termination tray 3 is made of plastic, and the optical fiber core a and the branch optical fiber core b accommodated in the sleeve 5 are respectively connected to the upper surface of the termination tray 3. It is also available secure the disengagement freely with no lifting or displacement of core wire with wire by the locking portion 17 ₁ in order to fix the holding covers from.

  As shown in FIG. 1, a frame 18 is horizontally provided below the termination tray 3 installed in the closure body 5, and a lower portion of a jacket such as a drop optical fiber, a drop cable, or a cord is provided below the termination tray 3. The connected optical cable can be stored, and the stored optical cable is wired above the termination tray 3 and connected to the connector.

In the core connecting operation for connecting the branch cable to the wired optical cable, the outer sheath near the connection point of the optical cable is removed to expose the optical fiber core, and the cable grips provided at both ends of the closure body 5 Attach an optical cable jacket to the section 21.
Next, the socket of the connector A is attached to the end portion of the optical fiber core wire cut for connection work among the optical fiber core wires.
On the other hand, when connecting a drop cable having a multi-fiber ribbon as a branch cable, the length of the outer cover at the end of the drop cable is removed to expose the tape, and the branch light contained in the tape The fiber core b is separated, and the plug of the connector A is attached to the tip of each branch optical fiber. The drop cable is introduced into the closure body 5 from the end face plate 20, passes through the gripping tool, and grips the end portion of the outer cover of the drop cable by the wiring gripping tool base 4 provided on one side of the termination tray 3.
The exposed branch optical fiber core b is wired to the core wire extra length storage portion 2 of the termination tray 3 and the length is adjusted to connect the plug to the socket of the optical cable. It is fixed to the connector fixing base 8 and accommodated in the connector accommodating portion 2 of the termination tray 3.
The connector fixing base 8 is held in the upper layer of the connector housing portion 1 when a thin core wire is held, and is held in the lower layer of the connector housing portion 1 when the thick optical cable is covered, and is stored separately in upper and lower layers. It is designed to protect thin core wires.

  In this case, as shown in FIGS. 1, 5 and 6, the connector housing 1 is inserted into the multi-purpose groove by inserting the connection portion holder 25, the all-connection connection portion holder 23, the holding core wire connection portion holder 24 or the splice D. 12 is used so that it can correspond to various connection forms so that appropriate modifications and improvements can be easily made.

In the optical cable connection closure of the embodiment, the connector A for connecting the optical fiber core wire a ₁ and the branched optical fiber core wire b is stored in the connector storage portion 1 of the termination tray 3 via the connector fixing base 8. Therefore, the connector A is securely held and can be safely maintained without any connection loss, and it is stored in the connector housing portion 1 with the layered distinction when the core wire or the jacket wire is placed, and the work such as inspection and connection is simplified. It is possible to ensure the safety of the optical fiber core wire that is easily damaged.

  The optical cable connection closure accommodates the connector housing part 1 provided with the connector fixing base 8 and the extra length of the branch optical fiber core wire from which the jacket connected to the connector on the branch cable side is removed. Since the extra length storage section is provided in the termination tray 3 so as to have multiple functions, it is possible to easily distinguish and store the thin branch optical fiber core wire and the thick branch optical cable so that the connection work is not hindered. Therefore, it is useful as a closure for connecting an optical cable used when an optical drop cable is drawn from an optical cable into a house.

In the embodiment of FIG. 12, the closure body 5 of the end plate 20 provided in the sleeve, in which is arranged by providing an extended sidewall section 20 ₁ with a cable insertion path for inserting the optical cable.

1 shows an embodiment of an optical cable connection closure according to the present invention, in which (a) is a transverse sectional view and (b) is a longitudinal sectional view. The closure main body used in the example of FIG. 1 is shown, (a) is a front view, (b) is a rear view, and (c) is a longitudinal sectional view showing the inside. FIG. 2 shows the state of use of the closure body used in the example of FIG. 2, (a) is a front view in a sealed state, (b) is a front view with one work surface opened, and (c) is the other work surface. FIG. 4D is a front view showing an opened state, and FIG. 4D is a front view showing a state where both work surfaces are opened. The TM fixing | fixed part used in the example of FIG. 1 is shown, (a) is the top view, (b) is a side view, (c) is a front view which is integrated in a closure main body and shows an inside. FIG. 5 is an enlarged explanatory view of a TM fixing portion used in the example of FIG. 4, (a) is a plan view thereof, (b) is a side view thereof, and (c) is a side view with a lid opened. 1 shows a connector fixing base used in the example of FIG. 1, (a) is a side view of an optical fiber strand in use, (b) is a side view of an opened state when it is attached / detached, and (c) is an optical fiber jacket. The side view of the use state of a line, (d) is a side view of the open state at the time of the attachment or detachment. 1 and 6 show an enlarged view of the connector fixing base, in which (a) is a plan view thereof, (b) is a side view thereof, and (c) is a front view thereof. The connection part holder used by the example of FIG. 1 is shown, (a) is the top view of the use condition, (b) is a top view which shows the single-piece | unit, (c) is the side view. 1 shows one use state of the multipurpose groove used in the example of FIG. 1, (a) is a plan view thereof, (b) is a side view thereof, and (c) is a bottom view thereof. FIG. 1 shows a state in which the SC adapter holder is used for the multipurpose groove used in the example of FIG. 1, (a) is a side view in a normal state (used as a multipurpose groove cover without an SC adapter), and (b) is The side view in the state at the time of SC adapter attachment, (c) is the top view of the SC adapter holder, a side view, and a front view. The core wire protective cover used in the example of FIG. 1 is shown, (a) is a plan view thereof, (b) is a front view thereof, and (c) is a side view thereof. The other Example of the closure for optical cable connection which concerns on this invention is shown, (a) is the cross-sectional view, (b) is the longitudinal cross-sectional view.

Explanation of symbols

A connector D splice a optical cable a ₁ optical fiber core wire
b Branch optical fiber core wire c Support wire 1 Connector housing portion 2 Core wire extra length housing portion 3 Termination tray 4 Wiring grip base 5 Closure body 5 ₁ Hinge portion 6 Vertical wall 7 Support pin
8 Connector fixing base 8 ₁ mating hole
8 ₂ knob pieces
9 Locking groove 10 Locking protrusion 11 Locking recess
12 Multipurpose groove 13 Pop-out prevention claw 14 Backlash prevention rib 15 Wire gripping plug 16 Outer wire gripping plug 17 Core wire protection sheet 17 ₁ Locking portion 18 Frame 19 Splice fixing portion 20 End face plate 21 Cable gripping portion 22 Cable TM gripping portion 22 ₁ tooth groove 22 ₂ convex wall 22 ₃ lid 22 ₄ bolt 23 full connection connector holder 24 retaining core wire connection holder 25 connection holder 25 ₁ SC adapter holder 26 sleeve stopper 26 ₁ pin 26 ₂ locking part
27 Multi-grommet 28 Blank panel 29 Passing core guide

Claims (4)

A connector housing portion for housing a connector for connecting the optical fiber core wire, and a core wire extra length housing portion for housing the extra wire length of the branched optical fiber core wire provided adjacent to the connector housing portion. An optical cable connection closure in which a termination tray and a wiring grip base for wiring the branched optical fiber cores accommodated in the extra length storage part are provided asymmetrically in the closure body. And
A structure in which the sleeve of the closure body is configured to be openable and closable on one side and / or both sides, and the fixing portion of the cable tension member can be fixed to the upper surface on both sides of the frame for fixing the termination tray installed in the closure body from the upper surface side. As well as
Multi-purpose as a storage part for a connector storage part of a plurality of core wire connection parts, a connection part for all connections, a holding core wire connection part on a telecommunications carrier side and a subscriber side, and a connection part holder in the termination tray The connection part storage part is deployed in parallel ,
The connector storage portion is arranged in parallel in a vertical grid with a plurality of vertical walls spaced apart on the termination tray, and the connector storage portion is a connector fixing that allows a connector comprising a socket and a plug to be removably inserted. The part is rotatably provided by a support pin,
The vertical wall is provided with a locking groove for releasably locking the support pin, and further, the vertical wall is locked for releasably locking the connector fixing portion. A projection, and the connector fixing portion is provided with a locking recess for engaging with the locking projection, so that the vertical wall can rotatably support the connector fixing portion; optical cable connecting closure, characterized in that it it.   2. The optical fiber connection closure according to claim 1, wherein the wiring gripper base is configured to be pre-fixable to the downstream side in a set state and is stored in the core wire extra length storage portion. An optical cable connection closure characterized in that a wire is gripped and a connector connected to the branched optical fiber core wire is detachably attached to the connector housing portion. According to claim 1 or 2 optical cable connecting closure according sleeve of the closure body, one side or / and both sides with consisting split sleeve which is provided freely open, direction of the sleeve surface of the can work by Kuroji turbocharger installation position A closure for connecting an optical cable, wherein a sleeve stopper for holding a sleeve opened in one or both openings in a predetermined position is detachably disposed across the divided sleeves. The optical cable connection closure according to any one of claims 1 to 3 , wherein the end face plate provided with the sleeve of the closure body is provided with an extended side wall portion having a cable insertion path for inserting the optical cable, and the branch optical fiber core wire insertion hole is provided. An optical cable connection closure characterized in that a multi-grommet is installed only on the lower side and the upper side is closed by a blank panel.

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