JP3718554B2 - Cable connection closure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a closure for protecting a connection portion of a communication cable such as an optical cable, and more particularly to an improvement of a closure for an optical cable.
[0002]
[Prior art]
Generally, a container for protecting a connection part is used for a cable connection closure, and this container is a vertically-divided cylindrical sleeve that covers and accommodates the connection part between end plates attached through the cable. A structure having a structure for protecting the cable connection portion in an airtight or watertight manner is often used.
[0003]
[Problems to be solved by the invention]
In the case of the conventional cable body that protects the cable connection, multiple storage trays are stacked in multiple stages to store the extra length of the cable core connection when the cable is branched, pulled in, or connected. A connection box is used, the core wires are connected with connectors, etc., and the connection length of the core wires is wound in a loop to store the connectors in the storage tray. There are inconveniences that it is difficult to check the surplus length situation, and there are problems such as complicated connection work of multiple core wires and handling of each storage tray, and complicated configuration.
The present invention aims to eliminate these conventional drawbacks, and provides a cable connection closure that can simplify the handling of the cable connection portion and greatly improve the workability of the cable connection in a simple and inexpensive form. It is the purpose.
[0004]
[Means for Solving the Problems]
The present invention relates to a cable gripping metal fitting in a cylindrical sleeve for introducing a cable, a core wire connection portion of a cable core wire led out from a cable fixed to the cable gripping fitting, and a cable core connected to the core wire connection portion. In a cable connection closure provided with a storage portion for extra length of wire, a core wire connection portion storage tray having a core wire connection connector holding portion arranged in parallel in the width direction of the sleeve is fixed in the width direction of the sleeve. The rails are slidably provided, and the rails are horizontally provided in the width direction of the plurality of sleeves with a space above and below the support piece erected on the coupling body fixed to the sleeve. Each storage tray is fitted and deployed, and the core wire connection portion storage tray is pulled out to the outside of the sleeve to be divided and expanded, and the core wires are stored in the core wire connection portion storage tray. In which are taken out Nozomu of core wire and connector housing to the connector holding portion of the core wire connection portion storage tray.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the core wire connection work of the embodiment of the present invention, the core wire between the gripping fittings that open the split sleeve, move the core wire connection portion storage tray out of the sleeve, remove the lid, and fix the multi-core cable jacket is exposed. The core wires connected to each other are connected to each other by a connector, and the connector or the connector put in a plurality of subunits is stored and locked in the connector holding portion of the core wire connection portion storage tray moved out of the sleeve. It is possible to easily check the connection work and the connection status.
In addition, since the core wire connection portion storage tray moves in the width direction of the sleeve, since the core wire is stored, slack in the core wire does not occur after the connection work is completed, and the wiring can be arranged without adversely affecting the transmission characteristics. The extra length handling work can be remarkably simplified.
The split sleeve is connected by a hinge mechanism, the cable is inserted from the end face plate and connected to the connection mechanism in the sleeve, and the sleeve is rotated around the hinge mechanism and covered while pressing the end face plate. The sleeve is assembled by pressing the sleeves together and used safely as a closure. When the connection is released, the sleeve can be easily rotated around the hinge, the sleeve can be opened and the internal connection work can be simplified.
[0006]
【Example】
The present invention will be described with reference to an example of a closure including a cylindrical sleeve 1 shown in FIGS. 1 to 6 and an end face plate 3 fitted to a side face fitting portion 2 of the sleeve. The trunk optical cable is penetrated and fixed by the cable gripping bracket 4, and the tension member of the cable is connected and connected to the tension member gripping bracket 5. The sleeve 1 is a cylindrical housing, which has to be divided up into two split at the hinge portion 1 ₁ in the axial direction, a synthetic resin, for example FRPP or heat of the flame retardant filled with PP resin or glass fiber It is made of a plastic elastomer and the like, and has an abutting joint surface that is divided into two in the axial direction, and an end face plate 3 that is fitted to both ends of the sleeve 1, such as weather resistance, ozone resistance, etc. And rubber plate material such as EPDM. Within the sleeve 1, the core wire connection portion storage tray 10 having the core wire connection connector holding portions 11 arranged in parallel in the width direction of the sleeve 1 is slidable on the rail 12 fixed to the sleeve 1 in the width direction. Furthermore, the rail 12 is provided horizontally in the width direction of the plurality of sleeves at intervals above and below the support piece 13 erected on the coupling body 8 fixed to the sleeve 1, and a core wire connecting portion is provided on each rail 12. Each of the storage trays 10 is fitted and arranged, and the core wire connection portion storage tray 10 is pulled out to the outside of the sleeve 1 to be divided and expanded, and the cores stored in the core wire connection portion storage tray 10 are accommodated. Of the wires, a desired core wire is taken out and connected to a connector, and the closure is configured to be stored in the connector holding portion 11 of the core wire connection portion storage tray 10.
[0007]
Parallel As the core wire connection portion the storage tray 10, Yes in or fitted subunits put or plurality of connectors to fit the connectors, at a plurality interval partition ribs 11 ₁ to the sleeve width direction A plurality of connector holding portions 11 are formed, and a core wire lead-in slit 14 is provided on both side walls of the connector holding portion 11, and a storage portion lid 15 that is detachable on the upper surface of the tray is provided. In addition, a rail insertion insertion groove 16 is formed in the lower part of the center.
[0008]
Further, the core wire connecting portion storage tray 10 is disposed at the central portion in the sleeve axial direction, and the cable core wire surplus is provided between the lower side of the tray bottom plate, the tray outer plate, and the end face plates at both ends of the sleeve. Each is formed with a long space, and is provided with a fitting insertion groove 16 of the rail 12 at the bottom, and locking pieces 17 and 18 with rail ends projecting from the insertion part and the terminal part of the fitting insertion groove 16. It is.
[0009]
Incidentally, the rail 12 includes a bent bracket portion 12 ₃ at one end has a long hole 12 ₁ in the longitudinal direction in the center, and provided with a locking claw portion 12 ₂ at the other end, by the bent bracket 12 ₃ It is fixed to the support piece 13, and the locking pieces 17 and 18 of the core wire connection portion storage tray 10 are fitted and inserted to prevent the core wire connection portion storage tray 10 from falling off the rail 12.
[0010]
Further, the sleeve 1 is provided with a pair of cable gripping metal fittings 4 each consisting of a presser holding piece along the outer circumference of the cable on the inner surface side of the sleeve facing the end face plate 3, respectively, and a tension member holding metal fitting 5 and a support wire holding metal fitting 7. the upper and lower fixed equipment as a frame which is integrally formed by the connecting member 8, 8 _1, although are provided with a buckle 30 for further fastening the opposed joint surfaces of the split sleeve 1, the band on the outer periphery of the sleeve 1 if necessary It may be arranged so as to be detachable so that the sealing performance on the separation surface is improved and the connection can be made.
[0011]
The sleeve 1 is configured to be separable, but is capable of maintaining the airtightness in the closure between the end face plates 3 so that the joint surfaces facing each other can be connected and integrated by a fixing means.
Further, the end face plate 3 is made of a rubber elastic body such as an oval shape, an elliptical shape, or a circular shape, and each of the cable insertion holes 20 has a thin cap portion or a slit, and the thin cap portion or the slit is selectively used. The cut-out opening is used as a through hole so as to penetrate the inside and outside of the closure.
In addition, it is considered that the outer peripheral surface of the cable can be closely attached to the through hole or the cable outlet hole formed by the cable insertion holes 20 and 20 by wrapping a spacer made of rubber or air tight tape. Yes.
[0012]
Moreover, the cable as the clamping hardware 4, connecting body 8,8 ₁ integral, or the connection type of a separate member, curved holding pieces 4 ₁ along the cable outer circumference receiving fixture with cable insertion recess as shown in Fig. 3 The cable is easily opened and closed by a pin, and the cable is clamped and fixed by a screw 24 so that the cable can be easily gripped. Incidentally, the curved holding pieces 4 _1, may be a detachable structure provided detachably to the receiving fixture. It has also been consideration to easily bodywork cable and support wire to fit the connecting piece ₈₁ in the sleeve 1 by a cable Tsushide bracket 23.
In this case, one-touch on the end face plate pair of cable gripping fittings 3 are oppositely arranged to 4,4 is the sleeve 1 constructed in frame integrally formed with upper and lower connecting member 8, 8 ₁ at each end of the sleeve 1 While being fixed, by oppositely arranged locking fitting portions 25 ₁ to butt edge of the sleeve 1 is engaged when the closed sleeve 1,1, a structure capable of double lock further buckle 30 is there.
[0013]
The cable tension member attached to the tension member holding metal fitting 5 is attached to the wire body insertion portion supported by the arm via a screw, and is fixed in the sleeve 1 to hold the cable. That is, the cable gripping bracket 4 is attached to the cable jacket using a necessary spacer, fastened to a predetermined torque with a fastening bolt, and then the tension member is inserted into the through hole of the tension member gripping bracket 5 and fixed with a fastening screw. It is.
When assembling the connecting portion having such a structure, by inserting a spacer into each cable or wound cable seal member, the envelope of the end of the cable and the cable clamping hardware 4, by a curved holding pieces 4 ₁ and the screw 24 After fixing, the joint surface of the split sleeves 1 and 1 is brought into contact with the joint surface of the end face plate 3 through the sealant and the joint surface of the sleeve 1 via a gasket, and is temporarily sealed by the engagement fitting portion. The buckle 30 on the outer periphery of the sleeve 1 is tightened and fixed in a double-mouthed locked state. The buckle 30 is attached and tightened at predetermined intervals sequentially, and the airtightness is maintained over the entire length of the sleeve 1 to provide a highly reliable seal. Can be structured.
In this assembled state, the sleeve gasket is compressed in the radial direction between the joining surfaces, so that high airtightness can be maintained with a relatively small holding force, and between the end face plate 3 and the cable. There is a spacer in the cable length direction and there is a sealing material, the posture of the sleeves 1 and 1 is stabilized, the assembly is facilitated, and the airtightness can be remarkably improved. This sleeve gasket is considered to improve assembly and airtightness by making the cross-sectional shape rectangular and rounding the corners and forming concave grooves on the upper and lower surfaces to give a lip effect. .
[0014]
On the other hand, when releasing the fastening state of the sleeves 1, 1, the fastening of the buckle 30 of the fastener is released, the slit is opened from the end face plate 3, and the joining surface of the sleeve 1 is separated and divided so that the cable can be replaced. Can be easily.
[0015]
【The invention's effect】
The present invention relates to a cable gripping metal fitting in a cylindrical sleeve for introducing a cable, a core wire connection portion of a cable core wire led out from a cable fixed to the cable gripping fitting, and a cable core connected to the core wire connection portion. In the cable connection closure provided with the storage portion for the extra wire length, the core wire connection portion storage tray having the core wire connection connector holding portions arranged in parallel in the width direction of the sleeve is vertically moved in the width direction of the sleeve. By providing each slidable on the rail fixed to the stage, in the core connection work, the split sleeve is opened and the core connection storage tray is moved to the outside of the split and expanded sleeve to connect the core The desired core wire is taken out of the core wires stored in the head portion storage tray and connected to the connector, and the connector is connected to the connector of the core wire connection portion storage tray while concentrating and holding the connection length of the core wire to the sub-tray. Since housing locking the lifting unit, the processing workability of the cable can be easily performed to confirm the connection work and connection status of the core is divided into upper and lower connection can be improved by a large margin.
Also, since the core wire connection portion storage tray moves in the width direction in the form of a sleeve, handling of the core wire connection process is easy and safety is improved, and the core wire is connected to the core wire after the connection work for storing the extra length of the core wire is completed. There is no sagging, wiring can be arranged without adversely affecting the transmission characteristics, and the extra length handling work can be remarkably simplified.
Moreover, the arrangement and storage of the core wire connection part and the extra length of the core wire in the sleeve are highly reliable, can ensure sealing, and the sleeve posture is also stable and good handling, which facilitates assembly work and secures connection. It can be performed easily and safely, is excellent in terms of cost, and the configuration of the cable connection closure can be made simple and inexpensive.
[Brief description of the drawings]
FIG. 1 is a partially cut side view showing an embodiment of the present invention.
FIG. 2 is a cut front view taken along line AA in FIG.
FIG. 3 is a developed perspective view of the example of FIG. 1 in use.
4 is a connection portion storage tray in which the lid of the example of FIG. 1 is separated, (a) is a plan view, (b) is a side view, (c) is a front view, (d) is a rear view, and (e). Is a central longitudinal sectional view, and (f) is a cut front view along the line BB.
5A and 5B are front views showing an operation state of the example of FIG. 1, in which FIG. 5A shows the movement state of one connection portion storage tray, and FIG. 5B shows the movement state of both connection portion storage trays.
6 is an enlarged cut plan view taken along the line CC of FIG. 5. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sleeve 1 ₁ Hinge part 2 Fitting part 3 End face plate 4 Cable holding metal fitting 4 ₁ Curve holding piece 5 Tension member holding metal fitting 6 Abutment part 7 Support wire holding metal fitting 8 Connection body 9 Sub unit 10 Core wire connection part accommodation tray 11 Connector holding part 11 ₁ partition rib 12 rail 12 ₁ long hole 12 ₂ locking claw part 12 ₃ bent bracket part 13 support piece 14 slit 15 storage part cover 16 fitting insertion concave grooves 17, 18 locking piece

Claims (5)

A cable gripping bracket 4 in a cylindrical sleeve 1 for introducing a cable, a core wire connection portion of a cable core wire led out from a cable fixed to the cable gripping bracket 4, and a cable core wire connected to the core wire connection portion In a cable connection closure provided with an extra-long storage portion, a core wire connection portion storage tray 10 having a core wire connection connector holding portion arranged in parallel in the width direction of the sleeve 1 is fixed in the width direction of the sleeve. The rail 12 is slidably provided, and the rail 12 is horizontally provided in the width direction of the plurality of sleeves at intervals above and below the support piece 13 erected on the connecting body 8 fixed to the sleeve 1. a a core wire connection portion the storage tray 10 on each rail 12 obtained by respectively fitted deployed to drawer movement position outside of the sleeve 1 which is divided expanded the core wire connection portion the storage tray 10, the core wire connection Cable connecting closure, characterized in that the housing of the stored in the storage tray 10 core fetches the desired core wire and connector to the connector holding portions 11 of the core wire connection portion the storage tray 10. The core wire connecting portion housing tray, there is where the connector holding unit 11 a plurality arranged to form a plurality at intervals of the partition ribs 11 ₁ to the sleeve width direction, heart on both side walls of the connector holding unit 11 The closure according to claim 1, further comprising a storage cover (15) which is provided with a wire lead-in / out slit (14) and which can be fitted to and removed from the upper surface of the tray.   The core wire connecting portion storage tray 10 includes a rail fitting insertion groove 16 at a lower portion, and locking pieces 17 and 18 with rail ends projecting from an insertion portion and a terminal portion of the fitting insertion groove 16. The closure according to claim 1 or 2, wherein The rail 12 is center includes a bent bracket portion 12 ₃ at one end has a long hole 12 _1, provided with a locking claw portion 12 ₂ at the other end, the locking of the cord connecting portion housing trays 10 The closure according to claim 2 or 3, wherein the closure has a drop-off preventing structure for engaging and disengaging the pieces (17, 18). A pair of cable clamping hardware 4 that is deployed in the sleeve 1, and the upper and lower connecting body 8, 8 _1, characterized in that the removably fixed arrangement to the sleeve 1 consists frame formed integrally The cable connection closure according to claim 2, 3 or 4.

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