JP3768307B2 - Storage case for optical cable connection - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an optical cable connection storage case used for connecting an optical cable having a tension member and an optical fiber core, and more specifically, an optical cable including a tension member in the case body, an infeed cable, an air bron cable, etc. The present invention relates to a storage case for connecting an optical cable that is held in the box.
[0002]
[Prior art]
Generally, when connecting an optical fiber having an optical fiber core wire and a tension member, it is essential to fix the tension member. For this reason, conventionally, a screw hole is formed in the optical cable connection storage case, and the end of the tension member is wound around the screw member screwed into the screw hole and fastened with a tool.
[0003]
[Problems to be solved by the invention]
However, in the conventional optical cable storage case, the cable sheath must be peeled off, cut and bent to handle the cable end. In the work, it is necessary to tear the tension member from the core wire, peel off the coating on the end of the tension member, wrap the exposed end of the tension member and fasten it. In addition, there is a problem in the safety of the core connection that the screw member is likely to loosen with time and the tension member and the cable may come off. This problem can be solved by providing a member such as a lock nut or by re-tightening the screw member periodically. A new problem arises in that the cable fixing operation becomes complicated. In the latter case, a new problem arises in that an enormous amount of inspection man-hours for the optical cable connection storage case is required.
The present invention is intended to eliminate these conventional drawbacks, and can fix optical cables, tension members, feeding cables, air blown cables and the like without loosening over time, and can also be easily fixed. An object of the present invention is to provide a storage case for connecting an optical cable, which can be greatly improved in workability and can be easily handled even when used in combination with each cable.
[0004]
[Means for Solving the Problems]
The present invention relates to a case main body in which a lid case is detachably assembled to a fixed case having a core wire storage portion provided with a core wire winding portion for winding an optical fiber core wire of an optical cable and a connector holding portion for connecting a core wire. An optical cable having an optical fiber core wire and a tension member is introduced through a cable gripper from a cable routing hole formed in the case body, and the tension member of the optical cable is fastened to the case body to connect the optical fiber. An optical cable connecting storage case for connecting core wires to each other, wherein the cable gripper for fastening the optical cable together with the tension member has a cable insertion concave portion having a cable abutting convex portion and a guide convex portion on the outer periphery. A gripping body having a cable gripping main body and a cable abutting convex part that is fitted into a cable insertion concave portion of the cable gripping main body and sandwiches an optical cable. Are connected integrally with a connecting band, and the guide convex portion of the cable gripping main body is inserted into and removed from the guide groove formed in the cable routing hole connected to the routing groove of the fixed case, and the cable gripping tool is connected to the cable. It is press-fitted and detachably fitted in the wiring hole.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The optical cable connecting storage case according to the present invention is such that the cable is inserted into the cable insertion recess of the cable gripping body of the cable gripping tool without tearing or bending the cable in the optical cable end processing, and then covering the gripping piece. Clamp the entire cable together with the tension member with the cable abutment projections on both sides, then press-fit the cable gripper into the cable routing hole, cover the fixed case with the lid case, fix the optical cable, and The member is held and fastened. Before the lid is closed, the optical cable is connected by the 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, a connector holding portion or a core wire storage portion with a module that can be stored alone or in combination of an SC connector, a single core MT connector, or a mechanical splice is selected and fitted in the fixed case. After this, when the lid case is assembled, it engages with the cable gripping tool fixed to the routing groove formed in the case to prevent the cable gripping tool from being disassembled and dropped off, that is, the cable gripping tool fastens the tension member. It is held in position, and the cable gripping tool is prevented from coming off, so that it is possible to reliably prevent the tension member and the cable from coming off.
If there is no SC connector or mechanical splice inside the fixed case, remove the core wire storage part from the fixed case and store it by bending or winding it in the fixed case using an air blow pipe. The provided stopper can be fixed in contact with the routing hole, and the lid case can be assembled and securely stored without the air bron cable being disconnected.
[0006]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. 1 to 7. A branched optical cable branched from an aerial closure provided on a trunk optical cable is introduced into an optical cable connection storage case A, and this optical cable connection storage case. A lead-in optical cable is branched and used from A to the building.
[0007]
An optical cable connection storage case A (hereinafter simply referred to as a storage case) includes a fixed case 10 attached to an outer wall surface of a building, and a lid case 20 that covers the fixed case 10, and these are assembled. For example, the lid body 20 is slidably assembled to the fixed case 10 to form a case body. The fixed case 10 is molded by resin injection molding or the like, and a cable introduction wiring hole 11 is formed. A plurality of optical cables B each having an optical fiber core C and a tension member C ₁ are formed from the cable wiring hole 11. The cable gripper ₁ that is introduced and fastens the tension member C1 of the optical cable B 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 insertion recess 3 forming a cable contact protrusion 2 on the inner periphery, the cable grip body 1 having a guide projection 5 on the outer periphery _1, is composed of clamping pieces 1 ₂ which with the cable contact protrusion 4 which is fitted to the cable insertion recess 3 of the cable grip body 1 ₁ interleave the optical cable B, the cable grip body 1 ₁ of the guide The protrusion 5 is inserted into and removed from the guide groove 13 formed in the cable routing hole 11 connected to the routing groove 12 of the fixed case 10, and the cable gripping tool 1 is detachably press-fitted into the cable routing hole 11. The optical cable B is fixed.
[0008]
In this case, the cable gripper 1, a cable grip body 1 ₁ and the clamping pieces 1 ₂ U-shaped section member made of a synthetic resin such as polypropylene resin connecting band 6 is connected integrally molded, the cable grip body 1 ₁ and clamping pieces 1 ₂ and the counter fitted to constitute a substantially cylindrical body, be one that is fitted into the cylindrical body to the Haisakuana 11 of the fixed case 10, the cable grip body 1 ₁ It is easy to handling operation of the clamping pieces 1 _2. Said cable contact protrusion 2 and 4 the cable gripper 1 if opposing mating and cable grip body 1 ₁ and the clamping pieces 1 _2,挾an optical cable B by shifting a predetermined distance in the cable axis direction by the cable insertion recess 3 It is considered that the fastening and holding is strengthened with a tendency to bite into the optical cable B, so that the cable can be fastened to the fixing case 10 without a tool and the lid case 20 is incorporated. At this time, it is considered that the contact member or the inner wall provided on the lid case 20 is brought into contact with the cover case 20 so as to become a removal prevention mechanism.
[0009]
The fixed case 10 is detachably fitted with a core wire storage section 30 in which a cable winding section 31 for winding a cable and a connector storage section 32 for connection of the core C are defined. The wire winding part 31 is composed of an annular wall for winding the cable and a holding piece 33, and is provided with SC connector storage parts 32 for storing connectors for connecting a core wire on both sides, and further a single core MT connector partitioned by a partition wall 40 It is a core wire storage portion 30 provided with a storage portion 36, and can be detachably fitted by a fitting locking portion 34 formed corresponding to the side wall of the fixed case 10 and the core wire storage portion wall. A mounting hole 37 is provided in the fixed case 10.
In this case, the core wire storage section 30 is a tray with an annular wall standing on the bottom plate around and around the center, and a connector storage section 32 capable of storing an SC connector, a single core MT connector, or a mechanical splice alone or in combination. You can choose what you have formed. For example, in this embodiment, two SC connectors and four single-core MT connectors are accommodated (single-core MT connectors are each divided into two left and right, and stacked in two stages). It is also possible to use a connector holding part that can accommodate two connectors, two single-core MT connectors, or two mechanical splices).
[0010]
The SC connector storage portions 32 are provided on both sides, the single-core MT connector storage portion 36 is provided next to each other through the partition wall 40, and the core winding portion 31 is formed further inside. The bottom plate is provided with connector protruding holes 41 so that a connector can be easily taken out by inserting a stick or the like.
[0011]
As shown in detail in FIG. 3B, a guide convex portion 13 or a concave portion is provided in the axial direction or the vertical direction of the cable into which the cable gripping tool 1 is inserted, and a corresponding concave portion or convex portion 14 is provided. It can be configured to be fitted and fixed in the routing hole 11 of the fixed case 10, or can be an inner type in which the mounting hole 37 is covered with the lid case 20 as shown in FIG. 5 or an outer type (FIG. 1). Is arbitrarily selected according to the appearance of the mounting wall.
[0012]
In the example of cable gripper of FIG. 6 and 7, said cable gripping body 1 ₁ and the clamping pieces 1 ₂ on the outer circumferential side comprises a fitting concave-convex portions 15, 16 make it easier to fasten the lock to the Haisakuana 11 In other respects, the same configuration as in the example of FIG. 4 is adopted.
[0013]
The routing groove 12 is a groove having a predetermined depth that opens on the front surface side, and communicates with the routing hole 11 for cable introduction and vertically cuts vertically. An optical cable is routed in the routing groove 12 together with a tension member. In the optical cable, an optical fiber core wire passes from the notch 35 of the core wire storage portion 30 to the core wire winding portion 31 and the connector storage portion 32 via the routing groove 12. It is guided and fixed by the cable gripping tool 1 together with the tension member. In the case of the indoor cable D, it may be inserted from the routing groove 12 and pressed and held with the indoor cable gripping tool.
[0014]
The fixing case 10 is provided with a fitting locking portion to which the lid case 20 is attached, and a locking portion of a fitting hole to be fitted to the fixing case 10 is provided on the lid case 20 side. It is preferable that a contact portion or a hooking portion that comes into contact with the tool 1 is provided on the lid case 20 to achieve a locking function.
[0015]
The core wire storage part 30 has a core wire winding part 31 for winding the cable core wire divided into a central part, and a plurality of protrusions that project the connector storage part 32 on both the left and right sides. Each of the core wire winding portions 31 is integrally formed with a cable pressing piece 33 extending radially toward the cable introduction portion at the tip portion. These cable holding pieces 33 hold down and hold the optical cable wound around the core winding part 31. An SC connector is accommodated in the connector accommodating portion 32, and an optical fiber core wire is connected by the SC connector.
The mounting hole 37 formed in the fixed case 10 is fixed to the wall of the building by a tightening hole or a screw or screw passing through the mounting hole 37.
[0016]
In the optical cable connecting storage case A according to this embodiment, when connecting the branch optical cable and the lead-in optical cable, first, the fixing case 10 is fixed to the outer wall surface of the building using a screw or the like, and the branch optical cable and the lead-in optical cable are pulled in. The optical cable is passed through the routing groove, for example, the branched optical cable is passed through one routing hole 11 and the drawing optical cable is passed through the other routing hole 11. Then, the optical fiber core C of each optical cable B is led to the core winding / connecting portion and connected by the connector, and the extra length is wound around the core housing 30 and held.
[0017]
Further, the tension member C ₁ of each optical cable B is fixed to the routing groove 12 via the cable gripping tool 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. Further, the indoor cable D is inserted through the routing hole 11, and the cable gripping tool 1 is fitted into the routing groove 12 to be pressed and held.
[0018]
Thereafter, the core wire storage portion 30 of the fixed case 10 is covered with the cover case 20 and the cover case 20 is attached to the fixed case 10. Here, the cover case 20 is locked by a contact piece such as a holding projection on the inner surface coming into contact with the cable gripping tool 1 of the fixed case 10 to inhibit movement. Therefore, the tension member or the cable fixed by the cable gripping tool 1 can be prevented from being loosened, and the cable gripping tool can be manually operated without using a tool such as a screwdriver, so that the cable connection work is easy.
In each of the above-described embodiments, the lid case 20 is attached to the fixed case 10 to prevent the cable gripper 1 from rotating and pressing (preventing lifting), but the lid case 20 only prevents lifting. It is also possible.
[0019]
8 and 9, a termination module 41 and a connection module 42 having a plug 24 and / or a connector for connecting an optical cable to a case main body 22 provided with a lid case 20 via a hinge portion 21, and each module. 41 and 42, an optical cable connection box having a core wire extra length storage portion 43 that is connected to the termination module 41 and the connection module 42, respectively, a single core separation portion, a core wire connection portion, and a core wire extra length. The housing portion and the core wire holding portion are provided in the case main body 22 via the attachment members 44 and 45 to form an optical cable connection housing case.
[0020]
In this case, the case body 22 is provided with a guide 46 for guiding the core wire between the termination module 41 and the connection module 42, and the cable routing hole 11 in which the cable gripping tool 1 can be arranged in a plurality of stages. It is formed as a multi-core compatible structure. Further, a modular U-link storage tool 50 is used as necessary. The U-link storage device 50 is a flat case, and includes, for example, a connector storage portion 51, a core wire fixing portion 52, a core wire winding guide rib 53, and a core wire presser piece 54, as shown in FIG. In addition, the fixing portion 57 facilitates attachment to and removal from the case body 22.
[0021]
In addition, this cable gripping tool 1 is good to fit the guide convex part 5 in the guide groove 13 provided in the cable routing hole 11, and to fix | fasten.
Further, as the termination module 41, a termination module having an MT ferrule provided at one end branched into a large number at a single-core separating portion and an SC simple plug or an MPO simple plug at the other end of each single-core wire. An internal wiring material is stored and held, but a conversion core module including an MT connector may be used, a compartment having a core winding part and a housing part for a core connection part such as a connector, and an SC Or, the MPO simple plug and the compartment having the core winding part are partitioned by a partition wall, and a prefabricated case is used to prevent twisting without causing the extra length of the core to be entangled. It is recommended that members that are not desired to be tampered with are selected and stored together in one ward room so that the cores can be easily identified and confirmed.
[0022]
10 and FIG. 11, in the example in which the conversion core module is used as the termination module 41 provided inside the case body 22 having the routing hole 11 to which the cable gripping tool 1 can be fixed, a 2MPO adapter or A plug 24 such as an SC adapter is provided, and the connection module 42 stores and holds the wiring material in the connection module as shown in FIG. comprising a join the club 29, opening and closing the pair of trays 28, 28 and a housing portion 27 of the connection portion, such as core wire winding portion 26 and the mechanical splice to the connector in the partition wall with a cord holding portion 25 by a hinge section 28 ₁ freely linked, used as a compact structure provided with engagement uneven portion 28 ₂ in the closing edge.
[0023]
Note that the termination module 41 and the connection module 42 are both of a type that also serves as a lid case, and preferably uses a combination structure that can be split or expanded into two parts that doubles the winding of the core wire and the inside is exposed. It is good to adopt one.
In addition, the wiring material in the termination module is a ready-made conversion core having a single core separation section branched into a large number of tapes having a ferrule at one end and an SC simple plug or MPO simple plug at the other end of each single core wire. It is convenient to use a wire, and it is also possible to use a ready-made core wire in which an SC connector or an MPO connector is provided at one end as the wiring material in the connection module. The connector storage portion is provided so as to be shifted to the upper side of the tray 28, and the lower side can be styled as a two-story tray in which an excess length storage portion is formed so that the extra length of the core can be easily stored. , 42 is a mounting member that can be individually attached to and detached from the bracket to facilitate wiring inspection processing, and is also supported when fixed, making it easy to handle any core wire. Yes, it can be removed and removed as needed, making it easy to understand at a glance and good identification, and the optical fiber core of each optical cable is guided to the cable winding / connection part, and the extra length part is used as the core wire storage part Since it is wound and held, the wiring processing work can be facilitated, and it is also possible to change and replace and add by a simple operation just by inserting this module.
[0024]
In the specific example of FIG. 12, a storage case for connecting an optical cable for distribution of overhead wiring, which is a power pole installation type, for connecting a branch line dropped out from a connection closure attached to the overhead wiring, A case main body 22 having a bracket 47 through which a power pole mounting steel belt can be inserted, and a lid case 20 constitute a storage case A, and a routing hole 11 for fixing the cable gripper 1 as a cable presser is provided in the case main body. 22, a tension member grip plate 48 and a cable storage article 49 are internally provided.
[0025]
【The invention's effect】
The present invention relates to a case body in which a lid case is detachably assembled to a fixed case having a core wire storage portion provided with a core wire winding portion for winding an optical fiber core wire of an optical cable and a connector holding portion for connecting a core wire. An optical cable having an optical fiber core wire and a tension member is introduced from a cable routing hole formed in the case body through a cable gripper, and the tension member of the optical cable is fixed to the case body to connect the optical fiber core. An optical cable connecting storage case for connecting wires to each other, wherein the cable gripper for fastening the optical cable together with the tension member has a cable insertion concave portion having a cable abutting convex portion and a guide convex portion on the outer periphery. And a holding piece having a cable abutting convex portion that is fitted in the cable insertion concave portion of the cable gripping main body and sandwiches the optical cable Are connected integrally with a connecting band, and the guide convex portion of the cable gripping body is inserted into and removed from the guide groove formed in the cable routing hole connected to the routing groove of the fixed case, and the cable gripping tool is connected to the cable. By detachably press-fitting into the cable hole, various cables can be held together with the tension member in a fastened state, and the fastening work can be securely fastened with an easy tool-less work. The handling operation of the cable is easy and the cable can be easily operated with a single touch, and the workability can be greatly improved without tools, and the fixing of the connecting members after connecting the core wires is also integrated into the central storage part and easy to store. The cable can be securely and securely gripped, has a simple structure and is inexpensive, can securely fix the tension member, can effectively prevent loosening over time, and can be easily fixed. It can be easily handled optical cable connecting housing case in combination cable.
[Brief description of the drawings]
FIG. 1 is a partially cut front view showing an embodiment of the present invention.
2 shows the optical cable connecting storage case of the example of FIG. 1, wherein (a) is a side view thereof, (b) is a longitudinal sectional view, and (c) is a bottom view.
3A is a perspective view of a part of the use state of the example of FIG. 1, and FIG. 3B is a perspective view of a part of another use state.
4 is an enlarged view of a cable gripper using the example of FIG. 1, in which (a) is a side view and a front view of the unfolded state, (b) is a bottom view, (c) is a longitudinal sectional view, and (d). FIG. 4 is a longitudinal sectional view in an assembled state.
FIGS. 5A and 5B show a cover case of another embodiment of the present invention, in which FIG. 5A is a front view, FIG. 5B is a side view, and FIG. 5C is a bottom view.
6A and 6B are other examples of the cable gripper used in the present invention, in which FIG. 6A is a front view in a separated state, FIG. 6B is a side view, FIG. 6C is a plan view, and FIG.
7 shows a partially separated state of the example of FIG. 6, wherein (a) is a rear view thereof, and (b) is a longitudinal sectional view.
8A and 8B show another example of the present invention, in which FIG. 8A is a front view showing the inside thereof, FIG. 8B is a bottom view, and FIG. 8C is a side view.
9A and 9B show a cable gripper used in the example of FIG. 8, in which FIG. 9A is a perspective view in a separated state, and FIG. 9B is a plan view in an assembled state.
FIG. 10 shows still another example of the present invention, in which (a) is a front view showing the inside thereof, (b) is a bottom view thereof, and (c) is a side view thereof.
11 shows the core case of the example of FIG. 10, (a) is a front view thereof, and (b) is a cut side view taken along the line AA. FIG.
FIG. 12 is an example in which the present invention is used for an overhead wiring distribution case, in which (a) is a plan view, (b) is a front view, (c) is a side view, and (d) is a bottom view.
13A and 13B are U-link storage portions used in the case of the present invention, in which FIG. 13A is a plan view and FIG. 13B is a side view.
[Explanation of symbols]
A Optical cable connection storage case B Optical cable 1 Cable gripper 1 ₁ Cable gripping body 1 ₂ Holding piece 2, 4 Cable abutment protrusion 3 Cable insertion recess 5 Guide protrusion 10 Fixed case 11 Routing hole 12 Routing groove 13 Guide Groove 14 Convex portion 15, 16 Concavity and convexity portion 20 Lid case 30 Core wire storage portion 31 Core wire winding portion 32 Connector storage portion 34 Fitting locking portion 36 Connector storage portion 40 Partition wall 41 Termination module 42 Connection module 43 Extra wire length storage section 44, 45 Mounting member 48 Tension member grip plate 49 Cable storage article 50 U link storage tool

Claims (6)

A core wire winding portion 31 for winding the optical fiber of the optical cable, the fixed case 10 having a core housing portion 30 and a connector holding portion for the core wire connection by assembling the lid case 20 detachably Case and comprises the body, stop the cable Haisakuana 11 formed on the case body an optical cable having an optical fiber and a tension member is introduced through the cable gripping device 1, the tension member C ₁ of the light cable to the case body in optical cable connecting storage case wear to connect the optical fibers C each other, the cable gripper 1 fastened each tension member C ₁ and the optical cable B is, the cable insertion recess 3 forming a cable contact protrusion 2 When a cable grip body 1 ₁ and a guide projection 5 on the outer periphery, is fitted to the cable insertion recess 3 of the cable grip body 1 ₁ light The clamping pieces 1 ₂ with a cable contact protrusion 4 which interleave the cable B are connected integrally formed in the connecting band 6, wiring the guide projection 5 of the cable bunch lifting body 1 ₁ of the fixed case 10 A storage case for connecting an optical cable, wherein the cable gripping tool 1 is detachably press-fitted into the cable routing hole 11 by being inserted into and removed from a guide groove 13 formed in the cable routing hole 11 connected to the groove 12. . Said cable grippers 1, is composed of a cable gripping body 1 ₁ of the U-shaped section member made of a synthetic resin clamping pieces 1 ₂ which, fitted opposite the said cable gripping body 1 ₁ and the clamping pieces 1 ₂ constitute a substantially cylindrical body, the wiring hole 11 is in fitting which is de claim 1 optical cable connecting storage case according of the tubular body of the fixed case 10. The core wire storage unit 30 is configured as a tray having a core wire winding unit 31 with standing annular walls around and around the central part, and includes a fitting locking unit 34 corresponding to the fixed case 10, and an SC. 3. A storage case for connecting an optical cable according to claim 1 or 2, wherein a connector storage portion 32 capable of storing a connector, a single-core MT connector, or a mechanical splice alone or in combination is formed and detachably disposed in the case body. The optical cable connection storage case according to claim 2 or 3, wherein the cable routing hole (11) is provided with a plurality of stages of the cable gripping tool (1). A plurality of the cable routing holes 11 are arranged in parallel and arranged in the case body, and the termination module 41 and the connection module 42 or the conversion core module having a plug and / or a connector for connecting an optical cable in the case body. The optical cable connection storage case according to claim 3 or 4, wherein the optical cable connection box includes a core wire extra length storage portion 43 connected to each module. The connection module 42 includes a pair of trays 28 each having an SC connector or an MPO connector at one end for accommodating and holding a wiring material in the connection module. ₁ 6. The optical cable connection storage case according to claim 5, wherein the optical cable connection storage case is connected in a freely openable and closable manner.

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