JPH10133030A - Storage case for optical cable connection - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix various cables including tension members to the storage case without any timewise slack and to easily perform the fixing operation without any tool. SOLUTION: A cable gripper 1 which fixes an optical fiber B together with the tension member consists of a cable gripping main body 11 which has a cable insertion recessed part 3 where a cable abutting projection part 2 is formed and a clamping piece 12 having a cable abutting projection part 4 which is fitted in the said cable insertion recessed part 3 to clamp the optical cable B. This cable gripper 1 is pressed and fitted in a cable distribution groove 12 connecting with a cable distribution hole 11 through a guide groove 13 detachably to hold the optical cable B in a fixed state, and the fixing operation can easily be performed without using any tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage case for connecting an optical cable having a tension member and an optical fiber cable, and more particularly, to an optical cable or feed cable including a tension member in a case body.
The present invention relates to an optical cable connection storage case that holds each cable such as an air cable in a fixed state.

[0002]

2. Description of the Related Art In connecting an optical fiber core wire and an optical cable having a tension member, it is essential to fasten the tension member. For this reason, conventionally, a screw hole has been formed in the optical cable connection storage case, and the end of the tension member is wound around a screw member screwed into the screw hole and fastened using a tool.

[0003]

However, in the conventional storage case for connecting an optical cable, it is necessary to peel off the cable coating, cut, and bend the cable for the cable terminal treatment. In the fastening work, it is necessary to tear the tension member from the core wire, peel off the coating on the end of the tension member, wind the exposed end of the tension member and fasten it. In addition, it is difficult to replace or add core wires, and the screw member is likely to loosen over time, and there is a problem in the safety of core connection that the tension member and the cable may be disconnected. It is thought that this problem can be solved by providing a member such as a lock nut, or by periodically retightening the screw member. However, in the former case, not only the structure becomes complicated, but also the tension member and A new problem arises in that the fixing work of the cable becomes complicated, and in the latter case, a new problem arises in that an enormous amount of inspection man-hours for the optical cable connection storage case are required. The present invention is intended to eliminate these conventional disadvantages, and can fasten an optical cable, a tension member, a feed cable, an air blown cable, etc. without loosening over time, and easily perform the fastening work. It is an object of the present invention to provide an optical cable connection storage case that can be easily used even when both cables are used together.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a cover case is detachably attached to a fixed case having a core wire storage portion provided with a core wire winding portion for winding a cable and a connector holding portion for connecting the core wire. A plurality of optical cables each having an optical fiber core and a tension member are introduced from a cable routing hole formed in the case main body by assembling the case main body, and the tension member of the optical cable is fastened to the case main body to secure an optical fiber. In an optical cable connection storage case for connecting core wires to each other, a cable gripping body having a cable insertion concave portion in which a cable gripping member for fastening the optical cable together with the tension member has a cable contact convex portion, and a cable of the cable gripping main body. A cable contact projection which is fitted in the insertion recess and which holds the optical cable. Jig is a material obtained by freely pressure inserted and fitted detachably to-installing groove connected to the cable wiring hole.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An optical cable connecting storage case according to the present invention covers a cable insertion recess of a cable gripping main body without peeling, tearing and bending a cable in an optical cable end treatment, and then covering the holding piece. Then, the entire cable is clamped by the two cable contact projections together with the tension member, and then the cable gripping tool is press-fitted into the routing groove connected to the cable routing hole, and the fixed case is covered with the lid case to cover the optical cable. After fixing, the tension member is clamped and fixed. Before the lid is closed, the optical cable is connected by a connector, and the extra long core wire is wound around the core wire storage portion, and the core wire storage portion holding the connector is fitted into the fixed case. In this case, an SC connector, a single-core MT connector, or a connector holding portion or a core wire storage portion having a module that can be accommodated alone or in combination with a mechanical splice is selected and fitted. After that, when the lid case was assembled, it engaged with the cable gripper fixed to the routing groove formed in the case, preventing the cable gripper from being disassembled and falling off, that is, the cable gripper fixed the tension member. The cable is held at the position and the cable gripper is prevented from coming off, so that the fastening of the tension member and the cable can be reliably prevented from coming off. If there is no SC connector or mechanical splice inside the fixed case, remove the core wire storage section from the fixed case and use the air blown pipe to bend or wind it into the fixed case and store it in the air blown pipe. The stopper provided is abutted and fixed to the wiring hole, and the lid case is assembled so that the air blown cable can be securely housed without coming off.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. A branch optical cable branched from an overhead closure provided in a trunk optical cable is introduced into a storage case A for connecting an optical cable. A drop-in optical cable is used by being branched and routed from the connection storage case A into the building.

An optical cable connection storage case A (hereinafter simply referred to as a storage case) has a fixed case 10 attached to an outer wall of a building, and a lid case 20 for covering the fixed case 10, and these are assembled. Then, for example, the lid case 20 is slidably assembled and fitted to the fixed case 10 to form a case body. The fixed case 10 is formed by injection molding of a resin or the like, and a wiring hole 11 for introducing a cable is formed. A plurality of optical cables B having an optical fiber core C and a tension member C ₁ are formed from the cable wiring hole 11. Introduce the tension member C of the optical cable B
_The cable holder 1 for fixing the cable holder 1 can be fixed to the fixed case 10. The optical cable B as a cable gripper 1 fastened each tension member C ₁ is provided with a cable grip body 1 ₁ with a cable insertion recess 3 forming a cable contact convex portion 2, the cable insertion of the cable grip body 1 ₁ is fitted in the recess 3 consists clamping pieces 1 ₂ which with the cable contact protrusion 4 which interleave an optical cable B, guiding the cable gripper 1 to wiring groove 12 continuous to the cable Haisakuana 11 Storage case A via groove 13
The optical cable B is detachably press-fitted to the optical cable B.

[0008] In this case, the cable gripper 1, constitute a substantially cylindrical body opposed mated from the cable grip body 1 ₁ and the clamping pieces 1 ₂ which in cross-section U-shaped member made of synthetic resin such as polypropylene resin and, there is the guide projection 5 formed on the cylindrical body periphery that is fitted into the guide groove 13 of the wiring groove 12, integrally with the cable grip body 1 ₁ and the clamping pieces 1 ₂ connecting band 6 And easy to handle. The cable abutment recesses 2,4 of the cable gripper 1 faces deployed shifted a predetermined distance in the cable axis direction by the cable insertion recess 3 of a cable gripping body 1 ₁ and the clamping pieces 1 _2, so as to interleave the optical cable B Consideration is given to strengthening the fixing holding due to the tendency to bite into the optical cable B, so that the cable can be fixed to the fixed case 10 with one touch without a tool, and the lid case 20 is provided.
When the is assembled, the contact member or the inner wall provided on the lid case 20 comes into contact to provide a detachment prevention mechanism.

In addition, the fixed case 10 is detachably fitted with a core wire storage portion 30 in which a cable winding portion 31 for winding a cable and a connector storage portion 32 for connecting the core wire C are partitioned. The cable winding part 31 includes an annular wall for winding the cable and a holding piece 33, and has SC connector storage parts 32 on both sides for storing a connector for core connection, and a single-core MT connector partitioned by a partition wall 40. There is a core storage part 30 provided with a storage part 36, which can be fitted by a fitting and locking part 34 formed corresponding to the side wall of the fixed case 10 and the core storage part wall. A hole 37 is provided. In this case, the cord storage section 30
Is a case in which an annular wall is erected on the bottom plate at the periphery and in the center, and a connector housing portion 32 capable of housing an SC connector, a single-core MT connector, or a mechanical splice alone or in combination is selected and used. For example, in this embodiment, two SC connectors and four single-core MT connectors are housed (two single-core MT connectors are divided into left and right sides and stacked in two stages). It is also possible to use a connector holding portion that can individually store two connectors, two single-core MT connectors, or two mechanical splices.

The SC connector housing portions 32 are provided on both sides, the single-core MT connector housing portions 36 are provided adjacent to each other via the partition wall 40, and the cable winding portions 31 are formed further inside. The bottom plate is provided with holes 41 for projecting a connector, and a pushing rod or the like is inserted so that the connector can be easily taken out.

As shown in detail in FIG. 3B, the cable gripper 1 is provided with a guide protrusion or recess in the axial direction or in the direction of the cone of the cable into which the cable gripper 1 is inserted. 5 can be a mobile phone that can be fitted into and fixed to the wiring hole 11 of the fixed case 10, or an inner type in which the mounting hole 37 is covered by the lid case 20 as shown in FIG. 5 or an outer type (FIG. 1). It is arbitrarily selected and used depending on the appearance of the mounting wall.

[0012] In another example of the cable gripper of FIG. 6 and FIG. 7, the cable grip body 1 ₁ and the clamping pieces 1 ₂ of the outer cable contact protrusion includes a fitting concave-convex portions 15 and 16 on the side Haisakuana The structure is the same as that of the example of FIG.

The wiring groove 12 is a groove having a predetermined depth open on the surface side, and is a wiring hole 11 for introducing a cable.
To go up and down. An optical cable is routed together with the tension member in the routing groove 12, and the optical fiber core of the optical cable is guided from the notch 35 through the routing groove 12 to the cable winding portion 31 and the connector storage portion 32.
It is fastened together with the tension member by the cable gripper 1. In the case of the indoor cable D, it may be inserted from the routing groove 12 and pressed and clamped by the indoor cable gripper.

The fixed case 10 is provided with a fitting and locking portion to which the lid case 20 is attached, and a locking portion of a fitting hole to be fitted with the fitting and locking portion is provided on the lid case 20 side. It is preferable that a lock portion or a hook portion that comes into contact with the cable gripper 1 be provided on the lid case 20 so as to perform a locking function.

The cable storage section 30 defines a cable winding section 31 for winding a cable core in a central portion.
A plurality of protrusions are provided on both left and right sides to partition the connector housing portion 32. Each of the cable winding portions 31 is integrally formed with a cable pressing piece 33 that radially extends toward the cable introduction portion at the distal end. These cable pressing pieces 33 hold and hold the optical cable wound around the winding section 31. An SC connector is accommodated in the connector accommodating portion 32, and an optical fiber core is connected by the SC connector. The mounting hole 37 formed in the fixing case 10 is fixed to a wall of the building by a screw or a screw passing through the mounting hole 37 or the mounting hole 37.

In the optical cable connection storage case A according to this embodiment, when connecting the branch optical cable and the drop-in optical cable, first, the fixed case 10 is fixed to the outer wall surface of the building by using a screw or the like, and then branched. The optical cable and the drop-in optical cable are passed through the routing grooves, for example, the branch optical cable is passed through one routing hole 11, and the optical cable is passed through the other routing hole 11. Then, the optical fiber core C of each optical cable B is led to a cable winding / connecting portion and connected by a connector, and the excess length is wound up and held in the core wire storage portion 30.

Further, the tension member C ₁ of each optical cable B is fixed to the routing groove 12 via the cable holder 1.
That is, first, sandwiched held in the insertion fit to Haisakuana 11 to the cable gripping device 1 in a state in which the cut ends of the tension member C _1. The indoor cable D is inserted from the routing groove 19, and a cable gripper is fitted into the routing groove 12, pressed and clamped.

After that, the core wire storage portion 30 of the fixed case 10
Is covered with the lid case 20, and the lid case 20 is attached to the fixed case 10. Here, the cover case 20 has a contact piece such as a holding protrusion on the inner surface abutting on the cable gripping tool 1 of the fixed case 10 and is locked to inhibit movement. Therefore,
The tension member or the cable fixed by the cable gripper 1 can be prevented from being loosened and can be manually operated without using a tool such as a driver, so that the cable connection operation is easy. In each of the above-described embodiments, the lid case 20 is fixed to the fixed case 1.
By attaching the cable holder to the cable holder 0, the cable holder 1 is prevented from rotating and held down (prevention of lifting), but the lid case 20 can be used to prevent only lifting.

In the specific examples shown in FIGS.
A terminal module 41 and a connection module 42 having a plug 24 and / or a connector for connecting an optical cable to a case body 22 provided with a hinge portion 21 via a hinge portion 21, and a core wire extra length storage portion 43 connected to each module 41, 42. The termination module 41 and the connection module 42 each have a single-core separation unit, a core connection unit, a storage unit for a core excess length, and a core holding unit. Case body 2 via members 44 and 45
2 as an optical cable connection storage case.

In this case, the case main body 22 is provided with a guide 46 for guiding a core wire between the termination module 41 and the connection module 42, and the cable gripper 1 is provided.
Is formed with a cable routing hole 11 that can be deployed in a plurality of stacked layers to provide a multi-core compatible structure. In addition, a modular U-link storage device 50 is used as needed. The U-link storage device 50 is a flat case and includes, for example, a connector storage portion 51, a core fixing portion 52, a core winding guide rib 53, and a core pressing piece 54 as shown in FIG. The fixing portion 57 and the fixing portion 57 make the case main body 22 easily detachable.

It is preferable that the cable gripper 1 is fitted with the guide projection 5 into a guide groove 13 provided in the cable routing hole 11 so as to be fastened. In addition, the termination module 4
As 1, a tape having an MT ferrule at one end is branched into a large number at a single-core separating section, and the wiring material in a termination module having an SC simple plug or an MPO simple plug at the other end of each single core wire is stored and held. However, a conversion core module including an MT connector may be used, and a compartment having a core winding part and a housing part for a core connection part such as a connector, an SC or MPO simple plug and a core may be used. Use a prefabricated case that is partitioned by a partition wall into an image room having a wire winding part and a member that is used to prevent twisting without entanglement of core wires and is not to be fiddled with factory-produced members Is preferably selected and housed together in one of the wards to facilitate identification and confirmation of the cords.

In the embodiment shown in FIGS. 10 and 11, the case main body 22 having the wiring holes 11 to which the cable gripper 1 can be fixed is provided.
In the example in which the conversion core module is used as the termination module 41 provided inside the module, a plug 24 such as a 2 MPO adapter or an SC adapter is provided.
As shown in FIG. 1, the wiring material in the connection module is stored and held, and is used as a floor unit core wire extra length winding portion. a pair of tray 28 and a housing portion 27 of the connection portion, such as core wire winding portion 26 and the mechanical splice to the connector connected to be openable and closable at the hinge portion 28 _1, the locking uneven closing edge portion 28 ₂ Use a compact structure provided with.

The terminating module 41 and the connecting module 42 are both of a combined structure that can also be used for winding the extra length of the core wire and that can be broken or unfolded into two parts so that the inside can be exposed. It is also good to adopt a different type. Also, the wiring material in the termination module is prepared by converting a tape provided with a ferrule at one end into a large number at a single-core separating section, and using a SC core or an MPO simple plug at the other end of each single core. It is convenient to use a wire, and the wiring material in the connection module may be a ready-made core wire provided with an SC connector or an MPO connector at one end. The connector storage section is provided on the upper side of the tray 28 so as to be offset, and the lower side can be configured as a second-floor type tray having an excess length storage section so that the core wire can be easily stored. And 42 are mounting members that can be individually attached to and detached from the brackets or slid to facilitate wiring inspection processing work, and that they are supported even when they are fixed so that any core wire can be easily handled. Yes, it can be removed and removed as needed, making it easy to understand at a glance and improving the discrimination.And the optical fiber core of each optical cable is led to the cable winding and connection part, and the extra length is stored in the core storage part. Since it is wound up and held, the wiring processing operation can be easily performed, and the switching and replacement and the extension can be performed by a simple operation of inserting this module.

In the specific example shown in FIG. 12, an optical cable connection type storage case for distributing an overhead wiring, which is a telephone pole installation type for connecting a branch line dropped out from a connection closure attached to the overhead wiring, is used. Bracket 4 through which a steel belt 50 for attaching a utility pole can be inserted into the main body 22
The case body 22 includes the case body 22 having the cover 7 and the cover case 20, and the case body 22 has a routing hole 11 for fixing the cable gripper 1 as a cable retainer. Cable storage article 4
9 is furnished.

[0025]

According to the present invention, a cover case is detachably assembled to a fixed case having a core wire storage portion provided with a core wire winding portion for winding a cable and a connector holding portion for connecting the core wire, and the case body is assembled. A plurality of optical cables having an optical fiber core and a tension member are introduced from a cable routing hole formed in the case main body, and the tension members of the optical cable are fixed to the case main body to connect the optical fiber cores to each other. A cable holding body having a cable insertion recess formed with a cable contact convex portion, wherein the cable holding member for fastening the optical cable together with the tension member is fitted in the cable insertion recess of the cable holding body. And a holding piece having a cable contact convex portion for holding the optical cable. The cable can be detachably press-fitted into the wiring groove connected to the wiring hole, so that various cables can be held in a fixed state together with the tension member, and the fixing work can be stopped with easy tool-less work. Cables can be easily and easily operated with a single touch, and workability can be greatly improved without tools.Fixing of connecting members after connecting core wires is also centralized in a central storage section, and storage is easy and safe and secure. The tension member can be securely fastened, the loosening over time can be effectively prevented, the fastening work can be performed easily, and the handling is easy with the use of each cable. The optical cable connection storage case can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cut front view showing one embodiment of the present invention.

2A and 2B show an optical cable connection storage case of the example of FIG. 1, wherein FIG. 2A is a side view, FIG. 2B is a longitudinal sectional view, and FIG. 2C is a bottom view.

3A is a perspective view of a part of a use state of the example of FIG. 1, and FIG. 3B is a perspective view of a part of another use state.

FIG. 4 is an enlarged view of a cable gripper using the example of FIG. 1;
(A) is a side view and a front view in an unfolded state, (b) is a bottom view, (c) is a longitudinal sectional view, and (d) is a longitudinal sectional view in an assembled state.

5 (a) is a front view, FIG. 5 (b) is a side view, and FIG. 5 (c) is a bottom view, with the lid case of another embodiment of the present invention removed.

FIG. 6 shows another example of the cable gripper used in the present invention.
(A) is a front view of the separated state, (b) is a side view, (c) is a plan view, and (d) is a bottom view.

7A and 7B show a partially separated state of the example of FIG. 6, wherein FIG. 7A is a rear view and FIG. 7B is a longitudinal sectional view.

8A and 8B show another example of the present invention, wherein FIG. 8A is a front view showing the inside, FIG. 8B is a bottom view, and FIG. 8C is a side view.

9 shows a cable gripper used in the example of FIG. 8,
(A) is a perspective view of the separated state, (b) is a plan view of the assembled state.

10A and 10B show still another example of the present invention, wherein FIG. 10A is a front view showing the inside, FIG. 10B is a bottom view, and FIG. 10C is a side view.

11A and 11B show the core wire case of the example of FIG. 10, wherein FIG. 11A is a front view thereof, and FIG. 11B is a sectional side view taken along line AA.

12 (a) is a plan view, FIG. 12 (b) is a front view, FIG. 12 (c) is a side view, and FIG. 12 (d) is a bottom view in an example in which the present invention is applied to an overhead wiring distribution case.

13 (a) is a plan view and FIG. 13 (b) is a side view of the U-link storage portion used in the case of the present invention.

[Explanation of symbols]

A Storage case for optical cable connection 1 Cable gripper 1 ₁ Cable gripper body 1 ₂ Clamping piece 2, 4 Cable contact convex part 3 Cable insertion concave part 5 Guide convex part 10 Fixed case 11 Cable hole 12 Cable groove 13 Guide groove 14 Convex part 15, 16 Concavo-convex part for fitting 20 Lid case 30 Core storage part 31 Cable winding part 32 Connector storage part 34 Fitting locking part 36 Connector storage part 40 Partition wall 41 Termination module 42 Connection module 44, 45 Mounting Member 48 Tension member gripping plate 49 Cable storage article 50 U-link storage tool

Continued on the front page (72) Inventor Ichiro Tanaka 4-35-3 Yoyogi, Shibuya-ku, Tokyo Inside Japan Recomm Co., Ltd. (72) Inventor Koji Shino 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Kenichi Nakazawa 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Inventor Sadaaki Takano 3-19-2 Nishi-Shinjuku, Shinjuku-ku, Tokyo Nippon Telegraph and Telephone Corporation

Claims (8)

[Claims] A cover body is detachably assembled to a fixed case having a core wire storage portion having a core wire winding portion around which a cable is wound and a connector holding portion for connecting the core wire, thereby forming a case body. An optical cable connection for introducing a plurality of optical cables having an optical fiber core and a tension member from a cable routing hole formed in the case main body, fixing the tension member of the optical cable to the case main body, and connecting the optical fiber cores to each other. A cable holding body having a cable insertion recess formed with a cable contact projection, wherein the cable holding member for fixing the optical cable together with the tension member is fitted in the cable insertion recess of the cable holding body. And a holding piece having a cable contact convex portion for holding the cable. An optical cable connection storage case, which is detachably press-fitted into a wiring groove continuous with the optical cable. 2. A substantially cylindrical body is formed by fitting the cable gripping member oppositely from a cable gripping body of a U-shaped member made of synthetic resin and a holding piece, and formed on the outer periphery of the cylindrical body. 2. The optical cable connection storage case according to claim 1, wherein the cable projection body is fitted into the wiring groove by a guide projection, and the cable gripping body and the holding piece are integrally formed with a connecting band. 3. A guide projection or recess in an axial direction or a taper direction of a cable into which the cable gripping tool is inserted, and the guide projection or the recess is fitted into a wiring hole of a fixed case provided with the corresponding recess or projection. The optical cable connection storage case according to claim 1 or 2, wherein the storage case is attached. 4. The cable gripping device according to claim 2, wherein the cable gripping members are arranged so as to face each other with a cable contact convex portion being deviated by a predetermined distance in the cable axial direction by a cable insertion concave portion between the cable gripping body and the holding piece. 3. The storage case for connecting an optical cable according to 3. 5. An SC connector, a single-core MT connector, wherein the core wire storage portion has an annular wall erected at a peripheral and a central portion and can be fitted by a fitting locking portion corresponding to a fixed case. Or a tray having a connector holding portion capable of accommodating a single or a combination of mechanical splices, wherein the tray is detachably provided in the case main body.
The storage case for connecting an optical cable according to 3 or 4. 6. The cable routing hole according to claim 2, wherein the cable grippers are stacked in multiple stages.
Or the storage case for optical cable connection according to 5. 7. A termination module, a connection module, or a conversion core having a plurality of cable routing holes arranged in parallel in a case main body and having a plug and / or a connector for connecting an optical cable in the case main body. The optical cable connection storage case according to claim 5 or 6, wherein the optical cable connection box has a cable module and an extra cable length storage section connected to each module. 8. The optical cable connection storage case according to claim 7, wherein the connection module stores and holds a wiring material in the connection module having an SC connector or an MPO connector at one end.