JPH09233670A - Closure for connecting cables - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a cable connection housing body in such a structure that an excess length of a core wire can be easily handled properly and the safety and airtightness can be increased and the assembly workability can also improved and the cost may be low. SOLUTION: In this closure, a plurality of connector holding sections 10 for connecting core wires which are parallelly arranged in the width direction of a sleeve 1 and a core wire holder 11 and a core wire presser 12, which hold excess lengths of cable core wires led out from connectors housed in the connector holding sections 10 at intervals in the sleeve axis direction, are installed on a core wire guide plate 16 which folds back through a slope section 13 and a bent and folded-back section 14. Since the excess lengths of the core wires can be stored along the core wire guide plate 16, the excess lengths of the core wires can be easily stored properly and the sleeve can be assembled efficiently with labor being lessened. Furthermore, the work can be done at one side and therefore the workability at a cable connection can be remarkably increased and the cable connection work is done exactly and the very reliable sealing of the cables in the sleeve can be secured without giving bad effects on the transmission characteristics.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a closure for protecting a connecting portion of a communication cable such as an optical cable, and more particularly to an improvement of a closure for an optical cable.

[0002]

2. Description of the Related Art Generally, a cable connection closure is
An accommodating body that protects the connection part is used, and this accommodating body is composed of an end face plate that penetrates the cable and is attached to the end face plate. A structure is often used in which a sleeve is mounted and divided butting portions facing each other are connected and integrated by a fixing means such as a mounting screw to protect a cable connecting portion in an airtight or watertight manner.

[0003]

In the conventional housing for protecting the connecting portion of the cable, a large number are provided to accommodate the extra length of the connecting portion of the cable core wire when branching, retracting, connecting, etc. of the cable. By using a connection box that stacks a number of storage trays in multiple stages on the tray guide, pull out the storage tray from the tray guide, connect the cores to each other with a connector, etc. Wrap it in a loop,
If the cable is stored in the storage tray and then returned to its original position, the excess length of the core wire adversely affects the transmission characteristics of the cable, and the inconvenience of checking the excess length of the cable core wire stored in the storage tray is inconvenient. In addition, there is a problem in that handling of the storage trays for a large number of core wires is complicated and the configuration is complicated. The present invention is intended to eliminate these conventional drawbacks, simplifies the handling of the extra core length of the cable connection portion, and can easily improve the workability of the cable connection. It is intended to be provided in the form.

[0004]

According to the present invention, a cable holding metal fitting is provided in a tubular sleeve for introducing a cable, and a core wire connecting portion of a cable core wire which is led out from a cable fixed to the cable holding metal fitting. In a cable connection closure including a storage portion for a cable core extra length connected to the core wire connection portion, a plurality of core wire connection connector holding portions arranged in parallel in the width direction of the sleeve, and the connector holding portion. A core wire holder that holds a cable core wire extra length that is led out from a connector housed in and is held at an interval in the sleeve axial direction is provided on a core wire guide plate that is bent back through a slope portion.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the core wire connecting work of the embodiment of the present invention, the core wires between the holding metal fittings for opening the split sleeve and fixing the multi-core cable jacket are exposed, and the core wires connected to each other are exposed. Are connected by a connector, and the extra connection length of the core wire is held along the core wire guide plate while being held by the core wire holder on the core wire guide plate, and the connector is stored and locked in the connector holding portion. Connection work and connection status can be easily confirmed. In addition, since the core wire guide plate accommodates the extra length of the core wire at the folded back portion, slack does not occur in the core wire after the connection work, and the wiring can be arranged without affecting the transmission characteristics.
The extra length handling work can be significantly 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 inside the sleeve, and the sleeve is rotated around the hinge mechanism to cover the end face plate while pressing the end face plate. It is assembled by pressing the sleeves against each other, and is safely used as a closure. Further, when the connection is released, the sleeves can be easily rotated around the hinge to open the sleeves and simplify the internal connecting work.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention is applied to a cylindrical sleeve 1 shown in FIGS.
An example of the closure including the end face plate 3 fitted to the side face fitting portion 2 of the sleeve will be described.
The trunk optical cable is penetrated and fixed by the cable holding metal fitting 4, and the tension member of the cable is connected and connected to the tension member holding metal fitting 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 A butt joint surface composed of a plastic elastomer or the like, which is vertically divided into two parts, and end face plates 3 fitted to both ends of the sleeve 1, for example, excellent in various properties such as weather resistance and ozone resistance. A rubber plate material such as EPDM is provided.

A plurality of connectors for connecting the core wires arranged in parallel in the width direction of the sleeve 1 or a connector holding portion 10 of a subunit containing a plurality of connectors and a connector housed in the connector holding portion 10 are led out. A core wire holder 11 and a core wire retainer 12 for holding the cable core wire extra length at intervals in the sleeve axial direction are folded and bent on a core wire guide plate 16 via a slope-shaped portion 13 and a curved bending portion 14. It is provided such that the extra core length is accommodated along the core guide plate 16.

The core wire guide plate 16 is made of a see-through transparent plate or a semi-transparent or colored opaque plate, and a plurality of partition ribs 17 are arranged side by side in the width direction of the sleeve to form a core wire insertion recess. And a flat upper surface plate portion 15 provided with a tray-shaped connector holding portion 10, both ends of the flat upper surface plate portion 15 are bent downward, and each of them is bent back under the flat upper surface plate portion 15. It is composed of a storage portion for the extra length of the cable core wire extended to both ends of the rising sleeve 1 by the slope portion 13 via the portion 14, and the core wire guide plate 16 is provided in the sleeve 1 by the support piece 19. It is attached to a fixed connector 18.

The core wire holder 11 includes a core wire retainer 11 ₁ having a plurality of slits S formed at intervals in the sleeve width direction as shown in FIG. 7, and a conversion core wire fitting locking portion 1.
1 and ₂ is fixed to a position above the slope-shaped portion 13 of the core wire guide plate 16, and a flat top plate portion 15 having the connector holding portion 10 is provided with a core wire retainer 12 with a slit to form the core wire. The extra length is arranged along the core wire guide plate 16. The connector holding portion 10 is a tray in which partition walls 9 capable of locking a connector for core wire connection are arranged side by side at a plurality of intervals, and the connector locking projection 8 is projected on the tray partition wall 9. In addition, the connector locked by a pin or the like can be protruded from the extrusion hole 7 so as to facilitate the removal. It is useful for prevention. (Figs. 3 to 7)

On the inner surface of the sleeve facing the end face plate 3, there is fixed a connecting body 18 provided with a cable holding metal fitting 4 consisting of a pressing and holding piece along the outer circumference of the cable, a tension member holding metal fitting 5 and a support wire holding metal fitting 7. It is equipped with a buckle 30 for fastening the opposing joint surfaces of the split sleeve, and a band is detachably wound around the outer circumference of the sleeve 1 so that the separation surface can be hermetically sealed and connected. Good.

The sleeve 1 has a separable form, but is designed to maintain airtightness in the closure between the end plates 3, and the joining surfaces facing each other can be connected and integrated by a fixing means. . That is, one side in the longitudinal direction of the sleeve is connected by a hinge portion of a fixed hinge or a detachable hinge, and the buckle 3 that can be tightened and tightened to the other side.
0 is provided. The end face plate 3 is made of a rubber elastic body such as an oval shape, an elliptical shape, or a circular shape. Each of the cable insertion holes 20 has a thin wall cap portion or slit, and the thin wall cap portion or slit is selectively formed. The cutout is used as a through hole to penetrate the inside and outside of the closure. It should be noted that it is considered that the through hole or the cable lead-out hole formed by the cable insertion holes 20 and 20 is wrapped with a spacer made of rubber or airtight tape so that the outer peripheral surface of the cable can be closely attached. There is.

Further, as the cable gripping metal 4, as shown in FIG. 2 (b), a bending holding piece 4 ₁ along the outer circumference of the cable is rotatably provided with a pin on a receiving member having a cable insertion recess to open and close. The cable is clamped and fixed by the screw 24 so that the cable can be easily gripped. The curved holding piece 4 ₁ may have a detachable structure which is detachably attached to the receiver. Further, it is considered that the cable suspending metal fitting 23 facilitates the mounting of the cable and the supporting wire in the sleeve 1.

Further, the cable tension member attached to the tension member holding metal fitting 5 is attached to the attachment plate via a screw and is fixed in the sleeve 1 to hold the cable. That is, attach the cable gripping tool to the cable jacket using the necessary spacers, fasten it with the tightening bolt at the specified torque, and then use the tension member gripping tool to tighten the tension member to the required torque with the tightening screw. Both sleeves 1 are fastened with.
When assembling the connecting portion having such a structure, a spacer is inserted into each cable, or a cable sealing material is wrapped around the cable, and the outer jacket of the end portion of the cable is fixed by the cable gripping metal fitting 4, and then the joint surface of the end face plate 3 A split sleeve 1 is formed on the joint surface of the seal material and the sleeve 1 via a gasket.
The buckle 30 on the outer circumference of the sleeve is fastened and fixed by abutting the joint surfaces of No. 1, and the buckle 30 is sequentially attached at predetermined intervals and tightened repeatedly to firmly maintain airtightness over the entire length of the sleeve 1 for reliability. A highly sealed structure can be provided. In this assembled state, since the sleeve gasket is compressed in the radial direction between the joint surfaces, it is possible to maintain high airtightness with a relatively small holding force, and between the end face plate 3 and the cable. A spacer is interposed in the lengthwise direction of the cable and has a sealing material, which stabilizes the postures of the sleeves 1 and 1, facilitates assembly, and significantly improves airtightness. This sleeve gasket has a rectangular cross-section with rounded corners and grooves on the upper and lower surfaces to give a lip effect to improve the assemblability and airtightness. .

On the other hand, when releasing the fastening state of the sleeves 1 and 1, the fastening of the buckle 30 of the fastener is released, the slit is opened from the end face plate 3, and the joint surface of the sleeve 1 is separated and divided. Can be easily replaced.

Incidentally, in the example of FIGS. 10 to 13, an intermediate branch type is used instead of the extension type of the previous example.
The core wire guide plate 16 is provided with the core wire holder 13 and the core wire retainer 12 and the connector holding portion 10 to gently guide the extra core wire length so that the core wire can be stored. The body 6 covers the core wire holder 13 to ensure the arrangement and arrangement of the extra length of the core wire.

[0016]

According to the present invention, a plurality of connector holding portions for core wire connection arranged in parallel in the width direction of the sleeve and a cable core extra length led out from the connector housed in the connector holding portion are provided. Since the core wire holder that holds the core wire at intervals in the axial direction is provided on the core wire guide plate that is bent and bent back through the sloped part, in the core wire connection work, the split sleeve is opened to cover the multi-core cable jacket. The core wire between the holding metal fittings to be fixed is exposed, and the core wires connected to this are connected by a connector, and the core wire guide plate is held while the extra connection length of the core wire is held by the core wire holder on the core wire guide plate. Since the connector is accommodated and locked in the connector holding portion along the line, the connection work of the core wire and the connection status can be easily confirmed.
In addition, since the core wire guide plate accommodates the extra length of the core wire at the folded back portion, slack does not occur in the core wire after connection work, wiring can be arranged without affecting transmission characteristics, and extra length handling work is extremely simple. Can be converted. In addition, the extra length of the core wire can be reliably organized and stored in the sleeve, the posture of the sleeve is stable and good handling, it facilitates the assembly work, and the connection and fixing can be performed easily and safely. However, it is excellent, and the configuration of the cable connection closure can be made simple and inexpensive.

[Brief description of drawings]

1 shows an embodiment of the present invention, (a) is a longitudinal sectional view,
(B) is a top view of an extra length storage part.

2A and 2B are other views of the example of FIG. 1, in which FIG. 2A is a front view and FIG.
Is a sectional front view taken along the line A-A, and (c) is a sectional front view taken along the line BB.

FIG. 3 is a perspective view of one usage state of FIG.

FIG. 4 is a side view of the core extra length storage portion of FIG.

FIG. 5 is a plan view of the example of FIG. 4;

FIG. 6 is an enlarged cut front view taken along the line CC of FIG.

7 is an enlarged plan view of a portion of the example of FIG.

8A and 8B show the core holder of FIG. 1, in which FIG. 8A is a plan view thereof, FIG. 8B is a side view thereof, FIG. 8C is a front view, and FIG.

9 is a view showing a cover of the connector holding portion of the example of FIG.
(A) is a plan view and (b) is a cut front view.

FIG. 10 is a perspective view showing a usage state of another embodiment of the present invention.

11 is a partially cut side view of the example of FIG.

FIG. 12 shows the extra core length accommodation portion of the example of FIG. 10, (a)
Is a side view thereof, and (b) is a plan view thereof.

13 is a cut front view taken along the line DD of FIG.

[Explanation of symbols]

 1 Sleeve 2 Side Fitting Part 3 End Face Plate 4 Cable Grip Metal Fitting 5 Tension Member Grip Metal Fitting 6 Storage Part Cover 7 Extrusion Hole 8 Connector Locking Protrusion 9 Partition Wall 10 Connector Holding Part 11 Core Wire Holder 12 Core Wire Holder 13 Slope Shape Part 14 Curved folded part 15 Flat top plate part 16 Core wire guide plate 17 Partition rib 18 Connected body 19 Support piece

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[Procedure amendment]

[Submission date] December 17, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

The core wire guide plate 16 is made of a see-through transparent plate or a semi-transparent or colored opaque plate for facilitating confirmation of the core wire state from the outside and partitioning the sleeve in the width direction of the sleeve. A plurality of ribs 17 are arranged side by side to form a core wire insertion recess, and a flat upper surface plate portion 15 having a tray-shaped connector holding portion 10, and the flat upper surface plate portion 15 are provided.
Both ends of the cable are bent downward, and each of them is composed of a storage portion for the extra length of the cable core wire which is extended to both ends of the rising sleeve 1 by the slope-shaped portion 13 under the flat upper surface plate portion 15 via the curved bending portion 14. Then, the core wire guide plate 16 is attached by a supporting piece 19 to a connecting body 18 fixed in the sleeve 1.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

Further, the core holder 11 includes a core wire retainer ₁₁₁ which is multiply formed spaced slits S in the sleeve width direction as shown in FIG. 7, conversion cord insertion locking portion 1
1 and _2, and is fixed at a position above the sloped portion 13 of the core wire guide plate 16, and the flat top plate portion 15 having the connector holding portion 10 is provided with a core wire retainer 12 having a slit to form the core wire. The extra length is arranged along the core wire guide plate 16. The connector holding section 10 is a tray in which partition walls 9 capable of locking a connector for core wire connection are arranged side by side at a plurality of intervals or arranged in a staggered manner, and the tray partition wall 9 is provided with connectors. A locking projection 8 is provided so that a connector locked by a pin or the like can be further projected from the extrusion hole 7 to facilitate removal, and a storage unit lid that can be inserted into and removed from the tray. 6 is provided to prevent the connector from falling off. (Figs. 3 to 7)

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

Incidentally, in the example of FIGS. 10 to 13, an intermediate branch type is used instead of the extension type of the previous example.
The slope portion 13 provided on the core wire guide plate 16 and the arrangement of the core wire retainer 12 and the connector holding portion 10 are configured such that the extra core wire length is gently guided and can be stored. The body 6 covers the connector holding portion 10 to ensure the arrangement and arrangement of the extra length of the core wire. Further, the connector holding unit 10 has the core wire storage unit symmetrically in the same manner as in the previous example, regardless of whether the upstream side (station side) or the downstream side (subscriber side) is the respective cable (wiring cable). ,
The partition walls 9 may be arranged in a zigzag manner so that the user cables can be connected and stored, and the size in the width direction can be used as a compact tray so that a large number of core wires to be stored can be arranged and secured. it can.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of drawings]

1 shows an embodiment of the present invention, (a) is a longitudinal sectional view,
(B) is a top view of an extra length storage part.

2A and 2B are other views of the example of FIG. 1, in which FIG. 2A is a front view and FIG.
Is a sectional front view taken along the line A-A, and (c) is a sectional front view taken along the line BB.

FIG. 3 is a perspective view of the usage state of FIG. 1 in a partially developed state.

FIG. 4 is a side view of the core extra length storage portion of FIG.

FIG. 5 is a plan view of the example of FIG. 4;

FIG. 6 is an enlarged cut front view taken along the line CC of FIG.

7 is an enlarged plan view of a portion of the example of FIG.

8A and 8B show the core holder of FIG. 1, in which FIG. 8A is a plan view thereof, FIG. 8B is a side view thereof, FIG. 8C is a front view, and FIG.

9 is a view showing a cover of the connector holding portion of the example of FIG.
(A) is a plan view and (b) is a cut front view.

FIG. 10 is a perspective view showing a usage state of another embodiment of the present invention and is in a partially developed state.

11 is a partially cut side view of the example of FIG.

FIG. 12 shows the extra core length accommodation portion of the example of FIG. 10, (a)
Is a side view thereof, and (b) is a plan view thereof.

13 is a cut front view taken along the line DD of FIG.

Front page continuation (72) Inventor Ikuya Tsuruta 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Recom Co., Ltd. (72) Inventor Hiroshi Yokosuka 1-1-5 Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Yasuhiro Tamaki 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Ltd. (72) Inventor Tetsuro Nozawa 1-1-5, Kiba, Koto-ku, Tokyo In Fujikura Ltd.

Claims (5)

[Claims] 1. A cable holding metal fitting in a tubular sleeve for introducing a cable, a core wire connecting portion of a cable core wire derived from a cable fixed to the cable holding metal fitting, and a cable connected to the core wire connecting portion. In a cable connection closure having a storage portion for the extra length of the core wire, a plurality of connector holding portions for connecting the core wire arranged in parallel in the width direction of the sleeve and a connector housed in the connector holding portion are led out. A cable connection closure characterized in that a cable core holder for holding a cable cable extra length at a distance in the axial direction of the sleeve is provided on a cable guide plate bent and bent back through a slope portion. 2. The core wire guide plate is made of a transparent plate that can be seen through, and has a flat upper surface plate portion provided with a tray-shaped connector holding portion, and both ends of the flat upper surface plate portion are bent downward to form flat upper surfaces. 2. The closure according to claim 1, wherein the closure is formed below the face plate portion, through a curved folded portion, and with a slope portion to extend to both ends of the rising sleeve and to accommodate an extra length of the cable core wire. 3. The core wire guide plate has a plurality of partition ribs arranged in parallel at intervals in the width direction of the sleeve to form a core wire insertion concave portion, and the core wire guide plate is provided on a connector fixed in the sleeve. The closure according to claim 1 or 2, which is attached via a support piece. 4. The closure according to claim 1, wherein the core wire holder includes a core wire retainer having a plurality of slits formed therein and a conversion core wire fitting and locking portion. 5. The connector holding portion of the core wire connecting portion is a tray in which a plurality of partition walls capable of locking the connector are juxtaposed, and a storage portion lid that can be inserted into and removed from the tray is provided. A closure as claimed in claim 1, 2, 3 or 4.