JP2002303736A - Cabinet for storing optical cable connecting part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify connecting/wiring operation of optical cables, to facilitate the exchange and addition of a number of coated optical fibers inside a cabinet, and to safely store the connecting part of cables and the extra length of coated optical fibers through the simplified installation of cords. SOLUTION: The cabinet is constituted of a case body 3 and a cover case 4, while the case body 3 is equipped with a coated optical fiber storing tray 10 comprising a supporting section 1 for holding the coated optical fiber connecting part b of an optical cable (a) and a storing section 2 for storing the extra length of the coated optical fiber extending from the connecting part b. The cabinet is also provided with a clamping device 5 for holding the optical cable. The drawing-in wiring cover 6, which covers a cable jacket removing part a1 outside the case of the drawing-in wiring cable (a) to be inserted into the case body 3 and drawn out of the case, is provided freely attachably/ detachably to the case body 3 and the cover case 4, with a clamping frame 7 arranged that holds the optical cable (a) inside the drawing-in wiring cover 6. As a result, the straight wiring is safely protected, the connection processing/ handling of a from the lead-in wiring is simplified, and the arrangement work is greatly facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication cable, and more particularly to an optical cable connection case used for connection and branch wiring of an optical cable having an optical fiber core and a tension member.
More specifically, the present invention relates to an optical cable connection portion storage cabinet in which an optical cable including an optical fiber core wire and a tension member is connected to a case main body, branched and held in a fixed state.

[0002]

2. Description of the Related Art Generally, when connecting an optical fiber core wire and an optical cable having a tension member, it is indispensable to fasten the tension member. It is indispensable to provide a margin for the wire and to handle the extra length with a margin for winding storage so that stress is not applied to the core, and it is necessary to protect the core including these connections. Have been. For this reason, conventionally, a large number of storage trays for storing the connection portion and the extra length of the core wire after the core wire connection are used, and a dustproof and waterproof case is used.

[0003]

However, the conventional optical cable connection case requires a special case, a cover, and a core connection processing member using a sheet, so that there are many assembly parts, and a cable holding or an arbitrary core is required. The handling of the cable is also troublesome, and it is also a problem in terms of the safety of the core connection and the workability.The handling and the structure are complicated and the cost is high. And there is a problem that the workability of cable connection is low. In addition, in a communication network using an optical cable, as the density of the cable and the number of cores increase, the capacity of the excess core storage portion tends to be insufficient. In addition, the handling of branch cores is troublesome, and the excess length of the cores is poor, stress is often applied to the cores, optical loss of the cores occurs, adversely affecting the transmission characteristics, and connection and branching. In addition, there is a problem that it is difficult to carry out the work and the arrangement of the individual wirings, and furthermore, it is not easy to cope with the addition and the size cannot be reduced. The present invention has been made in view of these conventional circumstances, and a drop connection, a switching, a branch connection operation, and a re-storage operation of an optical cable can be easily performed without adversely affecting the transmission characteristics of the optical cable. The multi-layered high-density storage structure makes it easy to store and organize each core, as well as increase or decrease each core,
Moreover, it is an object of the present invention to provide an easy-to-handle and low-cost cabinet for storing an optical cable connection portion, which can be easily added and can store the connection portion safely and extremely compactly.

[0004]

According to the present invention, there is provided a core storage device comprising: a support portion for supporting a core connection portion of an optical cable; and an extra length storage portion for accommodating an extra core length extending from the core connection portion. A gripper comprising a case main body having a tray, and a lid case provided so as to be freely fitted to the case main body, and holding the optical cable and the tension member of the optical cable introduced into the case main body and reaching the core wire connection portion. A penetrating wiring cover that covers the cable sheath stripped portion outside the case of the penetrating wiring cable that is inserted into the case main body and led out of the case is provided corresponding to the case main body and the lid case. The lead-through wiring cover is formed by a resin injection molding or the like, and is formed of a tubular member divided into two along the longitudinal direction of the cable. A locking member comprising a plurality of locking claws spaced apart in the longitudinal direction on both sides of the locking edge and a locking receiving portion capable of fitting and locking the locking claws is provided, and A holding frame for holding the optical cable was provided in the cover. The lead-in wiring cover has a cone-shaped cap portion that can form a cable insertion hole at the tip,
The other end is provided with a fitting attachment portion connected to the case body. Further, the gripping frame is characterized in that a case mounting portion is provided on a pair of supporting rods, and a detachable cable gripping piece and a wiring protection cover are provided at the other end. Further, in this optical cable connection portion storage cabinet, the cable gripper of the optical cable is detachably provided with a spacer for clamping the cable, and is disposed via a base plate facing the cable grommet provided in the case body. I have.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical cable branched from a closure (not shown) provided in a trunk optical cable is introduced into the case body of the cabinet for storing an optical cable connection section according to the present invention, and the optical cable connection section is stored in the cabinet. Optical cables are branched and routed into the building. The storage cabinet for the optical cable connection portion can be used as an optical outlet, and when used as an optical outlet, it can be configured as either a wall embedded type or an external wall type. The optical cable connection portion storage cabinet according to the present invention can be opened by inserting and removing the lid case, gripping the cable with the cable gripping member of the case body, fixing the tension member of the cable to the tension member gripping portion, and pulling out the cable. Core wire is connected to the internal wiring material,
The core wire to be branched and wired is routed in the case main body via the core wire locking portion. In the cabinet, since the lead-in wiring cable outside the case is covered with the lead-in wiring cover and is a stripped part of the cable sheath, the lead-in wiring cover is removed, the optical cable core is taken out, and the optical cable core is taken out. Can be handled with a sufficient length, and can be easily branched and connected to the core wire storage tray. In the core storage tray, the connection part is stored by the core connection part support part.In addition, the cord can be pushed in and fixed to the cord clamp to easily replace and expand the core connection. Wiring that can be recognized at a glance without twisting and curling can be made without applying extra external force to accommodate the extra length of the core, good discrimination is possible, and handling of any core is easy and handling is easy. In addition, it is possible to securely store and retain the excess length of each core wire, and it is also possible to fix the core wire with one touch, thereby making the connection and branching operations safe and easy. After this core wire processing is completed, the cover for the lead-in wiring is covered with the lead-in wiring, connected to the case body, and the lid case is fitted to the case body to provide a reliable waterproof and dustproof function to provide a core connection part. Safe storage protection.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 12. A cabinet for accommodating an optical fiber cable connection portion (hereinafter, abbreviated as a cabinet) will be described.
A core storage tray 10 comprising a support portion 1 for fixing or detachably supporting a core connection portion b of an optical cable a, and a core storage portion 2 for storing a core extension extending from the core connection portion b. And a cover case 4 provided so as to be freely fitted to the case body 3.
A gripper 5 for holding an optical cable and an optical cable of an optical cable a which is introduced into the core wire connecting portion b and a tension member, and which is inserted through the case main body 3 and led out of the case. the pull through wire cover 6 covers the cable jacket stripped portion a ₁ outside casing of the cable a in response to said case body 3 and the lid case 4 detachably attached to the cited-out through wiring cover 6 A holding frame 7 for holding the optical cable a is provided.
(FIGS. 1 and 2)

In this case, as shown in FIGS. 3 to 8, the lead-in wiring cover 6 is formed of a tubular member that is vertically divided into two parts along the longitudinal direction of the cable. A plurality of locking claws 8 at intervals in the direction
A locking member comprising a locking receiving portion 9 to which the locking claw 8 can be fitted and inserted, and a cone-shaped cap portion 61 capable of forming a cable insertion hole at an end thereof; to which was equipped with a fitting attachment portion 62 for coupling the case body 3, securely to the case body 3 wraps the cable jacket stripped portion a ₁ of the pull through cables held in gripping the frame 7 from the outside It is being prepared. Also,
The cone-shaped cap portion 61 at the end of the lead-in wiring cover 6 is cut off at a position corresponding to the diameter of the lead-in optical cable a to form a cable insertion hole.
If necessary, a seal tape is wrapped around the optical cable a to enhance the sealability. Further, a fitting mounting portion 62 provided at the other end of the lead-in wiring cover 6 is provided with a concave groove 63 that is fitted into a mounting hole edge of the case body 3 and the lid case 4.
The flange is made so that it can be easily attached to and detached from the case, and after it is fitted, it can be securely connected and can be firmly connected, and does not hinder the sliding operation of the lid case.

[0008] The pull As the gripping frame 7 for holding the jacket stripped portion a ₁ of optical cable in through the wiring cover 6, a pair of支杆7 as shown in FIGS. 1 and 2
0, a case attaching portion 71 is fixed to one end, a detachable cable gripping piece 72 is provided at the other end, a connecting piece 73 and a wiring protection cover 74 that can be attached to and detached from the connecting piece 73 are provided in the middle. are as to be stripped portion a ₁ can facilitate handling of the guiding and holding can pull down cables.

As shown in FIGS. 1 and 9 to 12, the gripping tool 5 faces a cable grommet 11 in a cable routing hole c which is arranged in parallel with the case main body 3 at equal intervals. 12, the optical cable a is detachably provided on the base plate 13 to simplify the clamp fixing of the optical cable a. Note the base plate strip 14 on the base plate 13, each with a gripper spacers 15, 16 to the cable gripper 5 to be locked to the base plate strip 14 with a locking unit 17, 17 ₁ interposed equipped It can be clamped according to the diameter of the optical cable a.

A pipe cable a shown in FIGS.
_In the cable gripper 5 of ₂ , a small diameter, a large diameter, for example, φ3
1, the pair of holding members 28, 29 a stepped piece 27, 27 ₁ to each opposing deployed as a clamping preventing stopper to allow the combination to the cable of Fai37, it is also available clamping immobilized with screws 26. In this case, one of the holding members 29 is screwed and fixed to the base band plate 14 and is mounted on the case body 3 facing the grommet.

Further, a mounting bracket 21 capable of fitting the reserved cord storage sheet 20 below the cord storage tray 10.
Further, the core wire storage tray 10 is provided in a multi-tiered or parallel arrangement as required, and the core wire extra length storage sheet 30, the connection module or the termination module can be set inside each core wire tray. A tying member and a side sheet for protecting the cord can be appropriately arranged in the case body 3 to ensure the guidance and holding of the cord.

This cabinet is formed by injection molding of a resin or the like, and a wiring hole for introducing the optical cable a is formed. A grommet 11 for dust prevention is fitted into the cable wiring hole, and the optical cables are respectively inserted therefrom. A plug that becomes a connection part b of the optical cable a, and / or a connector or an adapter and the like are housed in the core wire storage tray 10 so as to be drawn in and fixed by the cable gripper 5.

In the storage cabinet for an optical cable connection section according to this embodiment, when connecting the branch optical cable and the optical cable, the case body 3 is fixed to the outer wall of the building with screws or the like, and the branch optical cable is connected to the branch optical cable. Are respectively passed through the wiring holes, the extra core length of each branch optical cable is put in the core storage tray 10, and the reserved core is put in the reserved core storage sheet 20 and held.

Then, the case body 3 is covered with the lid case 4 to maintain the closed state. Wiring operations such as dropping and extension of the optical cable and switching replacement can be easily performed from the stripped portion of the cable sheath, and the discriminating property can be remarkably easily made in a wiring form that can be understood at a glance.

A holder 25 capable of holding a cable or a tension member is detachably mounted on the base plate strip 14 at a position corresponding to each grommet 11 so that the drop cable d can be easily fixed and maintained. I have.

FIG. 15 shows an example in which a plurality of the core wire storage trays 10 are arranged in parallel in the case body 3 in an office,
It is convenient to apply to large-scale buildings such as apartment houses, and can extend the stripped portion of the cable jacket to handle wiring at the time of dropout without stressing the core.

The core wire connection portion b in the core wire storage tray 10
The support portion 1 is provided with a plurality of comb-shaped partitioning plates erected at a predetermined interval or a group of supporting rods erected at an interval. In addition, a core connection portion, for example, a connector, a cassette or a case to which the core is connected can be supported by being vertically inserted from above into gaps formed between the partition plates.

Further, as the extra cord storage section 2, a holding piece 22 is provided at an appropriate position in an extra pocket section divided into a plurality of sections by a partition plate, and a door is provided on the front surface so as to be openable and closable. A bracket 23 protruding from the side wall is provided, and the bracket 23 is detachably attached to the base plate 13 with screws 24 via the bracket 23.

[0019]

According to the present invention, there is provided a core storage tray comprising a support portion for supporting a core connection portion of an optical cable, and a core storage portion for storing a core extension extending from the core connection portion. A case body provided with a cover case which is provided so as to be freely fitted to the case body, and includes a gripper which holds a cable and a tension member of an optical cable which is introduced into the case body and reaches the core wire connection portion. Then, a through wiring cover that covers the stripped portion of the through wiring cable that is inserted into the case body and led out of the case and that covers the outside of the case is detachable in correspondence with the case body and the lid case. Wherein the lead-in wiring cover is formed of a tubular member that is vertically divided into two along the longitudinal direction of the cable, and is connected by a locking member provided at the separated butted edge. By arranging the gripping frame for holding the optical cable in the cover for the wiring, the wiring work in the cabinet can be easily and reliably performed, and the replacement and extension of the core connection can be easily performed. The housing is simplified, the wiring can be seen at a glance, the discrimination is good, the handling of any core wire is easy, and the handling is easy. In addition to the improvement, the core connection part and the extra length can be stored in a completely separated state, and even if there is a stripped part of the cable sheath, it can be safely protected by being covered with a split wiring cover that can be divided and handled. It is simple and can be fixed to the gripping frame, so the pull-down cable can be securely held, the wiring can be arranged well, the safety can be improved, and the work of stripping the cable jacket can be omitted. Other handling improvement in workability because performed effortlessly been attempted in an effect on the practical such can be produced at low cost. In the present invention,
Reliable cable wiring inside the cabinet makes effective use of space, realizing compactness and improved workability, easy switching operation, and greatly reduces workability with core wires and cable gripping with minimum tools. It is possible to provide an optical cable connection portion storage cabinet which can be improved, can store the extra length of the core wire easily, can perform safe and secure cable wiring, has a simple configuration, is inexpensive, and is easy to handle.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention with a lid case removed.

FIG. 2 is an enlarged perspective view of a gripping frame used in the example of FIG.

FIG. 3 is a side view of the separated state of the lead-in wiring cover used in the present invention.

FIG. 4 is a bottom view of the example of FIG.

FIG. 5 is an enlarged cross-sectional view taken along line AA of the example of FIG. 3;

FIG. 6 is an enlarged cross-sectional view taken along line BB of the example of FIG. 3;

FIG. 7 is an enlarged cross-sectional view taken along line CC of the example of FIG. 3;

FIG. 8A is a rear view of the example of FIG. 3 taken along line DD. FIG. 4B is a front view of the example of FIG. 3 taken along the line EE.

FIG. 9 is an enlarged transverse sectional view taken along line FF of FIG. 1;

10A and 10B show a mounting state of the mounting cable of the example of FIG. 9; FIG. 10A is an explanatory plan view of an example in which a spacer is interposed; and FIG.

11 shows an example of FIG. 10 (b), and FIG. 11 (a) is a partially cut-away side view. (B) is a front view thereof.

FIG. 12 shows a spacer used in the example of FIG. 10;
(A) is a cut side view, (b) is a plan view, (c)
Is a front view, and (d) is a bottom view thereof.

13A and 13B show another embodiment of the cable gripper used in the present invention, wherein FIG. 13A is a partially cut front view, FIG. 13B is a side view thereof, FIG. 13C is a partially cutaway bottom view thereof, d) is a perspective view of the separated state.

14A and 14B show another embodiment of the example of FIG. 13, wherein FIG. 14A is a partially cut front view, FIG. 14B is a side view thereof, FIG. 14C is a partially cutaway bottom view, and FIG. It is a perspective view of a state.

FIG. 15 is a front view showing another embodiment of the present invention with a lid case removed.

[Explanation of symbols]

Reference Signs List a Optical cable a ₁ Stripped part of sheath b Core wire connection part c Routing hole d Drop cable 1 Support part 2 Extra core length storage part 3 Case body 4 Cover case 5 Grasping tool 6 Cover for lead-in wiring 7 Grasping frame REFERENCE SIGNS LIST 8 locking claw 9 locking receiving portion 10 core wire storage tray 11 grommet 12 fastening screw 13 base plate 14 base plate band plate 15, 16 spacer 17, 17 ₁ locking portion 20 reserved core wire storage sheet 28, 29 holding member 30 Extra-cord length storage sheet 61 Cap part 62 Fitting mounting part 70 Supporting rod 71 Case mounting part 72 Cable gripping piece

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H02G 15/08 H02G 15/08 D 15/113 15/113 H05K 7/00 H05K 7/00 AE7 / 02 7/02 N 7/18 7/18 E (72) Inventor Fujiyoshi Shinoda 4-35-3 Yoyogi, Shibuya-ku, Tokyo Inside Japan Recomm Co., Ltd. (72) Inventor Ichiro Tanaka 4- Yoyogi, Shibuya-ku, Tokyo 35-3 Japan Recom Inc. (72) Inventor Yasuhiko Shinmachi 4-35 Yoyogi, Shibuya-ku, Tokyo 35-35 Japan Recomm. Inc. (72) Inventor Toshiaki Takeda 5-23-8 Nishigotanda, Shinagawa-ku, Tokyo (72) Inventor Toshio Oikawa 2-3-1 Otemachi, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Masaaki Shinfuku 2, Otemachi, Chiyoda-ku, Tokyo No.3-1 Inside Nippon Telegraph and Telephone Corporation (72) Inventor Sadaaki Takano 2-3-1 Otemachi, Chiyoda-ku, Tokyo F-term within Nippon Telegraph and Telephone Corporation (Reference) 2H036 RA11 RA23 2H038 CA37 CA38 4E352 AA08 BB02 BB03 BB10 BB11 CC12 CC22 DD05 DD15 DR05 DR19 DR23 FF09 GG12 GG17 GG20 GG27 5G361 AA07 AB09 AC01 AC04 AC11 AD03 AE01 5G375 AA18 BA15 BA27 CA02 CA12 DB23 EA04

Claims (5)

[Claims] 1. A case body provided with a core storage tray comprising: a support portion for supporting a core connection portion of an optical cable; and a core storage portion for storing a core extension extending from the core connection portion. And a cover case that is provided so as to be freely fitted to the case main body, and includes a gripper that holds a cable and a tension member of an optical cable that is introduced into the case main body and reaches the core wire connection portion, A penetrating wiring cover that covers the stripped portion of the penetrating wiring cable that is inserted into the main body and led out of the case and that covers the outside of the case is provided detachably in correspondence with the case body and the lid case. Wherein the lead-in wiring cover is formed of a tubular member that is vertically divided into two parts along the longitudinal direction of the cable, and is connected by a locking member provided at the separated butting edge thereof. wiring An optical cable connection portion storage cabinet, wherein a holding frame for holding an optical cable is provided in a cover for the optical cable. 2. A penetrating wiring cover, comprising: a plurality of locking claws spaced apart in a longitudinal direction on both sides of a divided edge; and a locking receiving portion capable of fitting and locking the locking claws. 2. The cabinet for storing an optical cable connection part according to claim 1, wherein said locking member is provided. 3. The lead-in wiring cover has a cone-shaped cap portion at a tip end of which a cable insertion hole can be formed,
3. The cabinet for storing an optical cable connection part according to claim 1, further comprising a fitting attachment part connected to the case body at the other end. 4. The gripping frame according to claim 1, wherein a case mounting portion is provided on the pair of supporting rods, and a detachable cable gripping piece and a wiring protection cover are provided at the other end. The cabinet for storing the optical cable connection section described in the above. 5. The optical cable according to claim 1, wherein the cable gripper of the optical cable has a spacer for holding the cable detachably, and is disposed via a base plate facing a cable grommet provided on the case body. Or the cabinet for storing an optical cable connection part according to 3.