JPH09135525A - Closure for connecting cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a closure in a low-cost structure wherein divided and joined faces of a cable connection housing body can be kept tightly fastened to each other, the safety and the airtightness can be increased and an assembly workability can be remarkably enhanced. SOLUTION: In a ring receiving recessed section 63 near an edge of one opening of one sleeve 1, a plurality of hinge members 60 comprising of loop rings 61 are swingably installed at intervals. Near an edge of the other opening of the sleeve 1, a plurality of tightening member receiving recessed sections 731 are installed at intervals. Meanwhile, near an edge of one opening of the other sleeve 2, a plurality of fitting recessed sections 631 for the hinger members 60 are installed at intervals. Near an edge of the other opening of the sleeve 2, operation levers 75 which have at their top ends fitting projections 74 to fit in with the tightening member receiving recessed sections 731 are pivoted on ring receiving sections 73 by means of loop rings 71. On the loop rings 71, presser members 77 which are set in recessed sections 76 formed outside the divided and joined edges of the sleeves 1, 2 and which move along the outside of a gasket are movably installed.

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 end face plate that penetrates the cables on both sides of the cable connecting part, and a vertically-separated cylindrical sleeve that accommodates the connecting part by covering the connecting part. There is often used a structure in which the divided butted portions opposed to each other are connected and integrated by fixing means such as mounting screws to hermetically protect the cable connecting portion.

[0003]

Since the conventional sleeve of the housing for protecting the connection portion of the cable must maintain rigidity for preventing deformation of the sleeve and prevent ingress of moisture, each component of the sleeve is required. Must be tightly coupled to each other and also tightly coupled to the cable end, and the cable housing provided with the airtight material is complicated to manufacture, expensive and costly, and also has a problem in durability. However, there is a problem in that tightening force management and assembly workability are complicated to secure the airtightness of the sleeve. The present invention is intended to eliminate these conventional disadvantages, and aims to prevent deformation of a housing of a cable connection portion, improve safety and airtightness, and greatly improve sleeve assembly workability. It is an object of the present invention to provide an inexpensive closure with a simple structure.

[0004]

SUMMARY OF THE INVENTION According to the present invention, there is provided a butt joint surface which surrounds a cable connecting portion and axially divides a cylindrical sleeve into which a cable can be led out so as to face each other. To fasten the joined surface,
A hinge portion composed of a loop-shaped ring detachably hooked from one sleeve to the other sleeve and a fastening portion are connected and integrated, and in a ring receiving recess near one opening end edge of one sleeve. A plurality of hinge members composed of loop-shaped rings are provided at intervals so as to be swingable, and a plurality of fastening portion receiving recesses are provided at intervals near the other opening end edge, and at the vicinity of one opening edge of the other sleeve. Is provided with a plurality of locking recesses of the hinge member at intervals,
On the other hand, in the vicinity of the opening edge, an operating lever having a locking projection that fits into the fastening member receiving recess is pivotally supported by a ring ring in the ring receiving recess so that the sleeve dividing joint edge is further provided. The loop-shaped ring of the fastening portion is provided with a pressing member which is fitted into the recessed portion formed on the outer side and extends along the outer side of the gasket.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the closure of the present invention, the upper sleeve is connected to the lower sleeve at the hinge portion and the fastening portion, and the cable is inserted through the end face plate to be connected to the connecting mechanism in the sleeve. Rotate the sleeve around the hinge mechanism, press the end plate against the lower sleeve and cover it on the lower sleeve, press both upper and lower sleeves together, and tighten the sleeve joint surface that is abutted by the fastening part on one side of the sleeve. It is assembled by fastening several times with a predetermined torque to stabilize the mounting posture of the cable seal material and the end plate, and the sealing performance is greatly improved, and it is safe as a closure due to the gas injected from the valve. When the connection with the fastener is released, the upper sleeve can be easily rotated around the hinge to open the sleeve and simplify the internal connection work. It is kill things.

[0006]

Closure comprising a cylindrical sleeve made from the sleeve 2 and the lower sleeve 1 Metropolitan top of FIG. 1 to FIG. 10, the end plates 3, which is fitted to the side fitting portion 3 ₁ of the sleeve EXAMPLES The present invention For example, the main optical cable 10 is penetrated through the end plates 3 and 3 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,
The reference numeral 2 designates a cylindrical housing which is divided into upper and lower portions along the axial direction by separating and joining surfaces, and is made of a flame-retardant FRPP or thermoplastic resin filled with synthetic resin such as PP resin or glass fiber. A butt joint surface that is composed of an elastomer, etc.
At both ends of the sleeves 1 and 2, an end face plate 3 to be fitted is provided, for example, a rubber plate material such as EPDM excellent in various characteristics such as weather resistance and ozone resistance.

When the split sleeves 1 and 2 are fastened, a hinge portion 60 and a fastening portion 70, which are loop-shaped rings 61 and 71 detachably hooked from one sleeve 1 to the other sleeve 2, are provided. In the ring receiving recess 63 near the one opening end edge of the one sleeve 1, a plurality of hinge members 60 made of the loop-shaped ring 61 are provided at intervals so as to be swingable, and the other opening is formed. A plurality of fastening portion receiving recesses 73 ₁ are provided in the vicinity of the end edge at intervals, and a plurality of locking recesses 63 ₁ of the hinge member 60 are provided in the vicinity of one opening end edge of the other sleeve 2 at the same time. On the other hand, in the vicinity of the opening end edge, an operation lever 75 having a locking projection 74 that fits into the fastening member receiving recess 73 ₁ at the tip is pivotally supported by a ring ring 71 in the ring receiving recess 73. ,further It is fitted to the concave portion 76 formed in the split joint edge outer sleeve 2, the fastening part 7 pressing member 77, for example, a ring rod along the gasket outside
It is provided movably on a loop-shaped ring 71 of 0.

A stopper 64 for holding the loop-shaped ring 61 of the hinge portion 60 at a predetermined rotation angle with the ring insertion portion 62 as a fulcrum is provided on the outer side of the split joint edge of the sleeve 1 to form a plurality of loop-shaped stoppers. Ring 61. . . Is stopped by the stopper 64, the upper sleeve 1 is covered with the lower sleeve, and the sleeve 1 is raised by using the gasket as a fulcrum to lift the ring insertion portion 6 of the ring engaging recess 63 _1.
By hooking it back on 2 ₁ and returning, multiple loop-shaped rings 6
1 are collectively engaged at the same time, and one side of the sleeve is connected as the hinge portion 60 by one-touch operation,
The other side of the sleeve may be fastened at the fastening portion 70.

When the gasket fitting concave groove 6 formed on the split joint surface of the sleeve 1 has the both ends of the concave groove 6 as the gasket compressing portion 6 ₁ of the contracted hole, when the gasket 7 is fitted, Both ends are stretched and pushed in, and the gasket is temporarily stopped to prevent the fall and the collapse of the gasket 7 reliably. However, if necessary, the gasket 7
It is also possible to provide a temporary fixing mechanism by providing flange portions (not shown) at both ends of the and then pulling the flange portions to the outer ends and pressing them. Further, a barrier 65 is provided along the gasket fitting concave groove 6 of the sleeve 1 at a symmetrical position of both sleeves 1 and 1, and abuts against the inner wall surface of the other sleeve that joins the barrier 65, and the barrier 65 is divided into upper and lower parts. The structure prevents the sleeves 1 and 2 from shifting in the horizontal direction.

Ring insertion portions 62, 6 of the hinge portion 60
2 ₁ and the ring insertion portions 72, 72 ₁ of the fastening portion 70, the ring receiving concave portion 63, the hinge member locking concave portion 63 _{1, the} ring receiving concave portion 73, and the fastening member receiving concave portion 73 ₁ are the loop-shaped ring 6
It is considered that the molding die has the same structure so that the parts 1 and 71 can be commonly used and the molding die is simplified. The end face plate 3 is integrally provided with a thin wall cap portion 21 capable of covering and separating the cable insertion hole 20 provided, and a slit 22 communicating with the cable insertion hole 20 is provided so as to penetrate the outer surface of the end face plate to form a slit. It is configured so that the end cut at 22 can be expanded and includes the facing joint surface of the end face plate 3, and the gasket 7 is attached to the divided joint surfaces of the sleeves 1 and 2.
The end face plate 3 is provided with a concave groove 6 capable of fitting and holding
On the inner surface side opposite to the above, there is fixedly provided a connecting metal fitting 8 provided with a cable grip metal fitting 4 formed of a pressing and holding piece along the outer circumference of the cable, a tension member grip metal fitting 5 and a tension member connecting tool 9.

The sleeves 1 and 2 are vertically separable, and a sealing material is interposed between the end face plates 3 so as to maintain the airtightness in the closure together with the sleeve gasket 7 and face each other. The joining surface can be connected and integrated by a fixing means. That is, one side in the longitudinal direction of the sleeve is connected by the hinge part 60, and the other side is provided with a tightening part 70 that can be tightened and further tightened.
The end face plate 3 has an oval or elliptical shape,
The cable 10 is made of a rubber elastic body such as a circular shape, and has a plurality of cable insertion holes 20 each having a thin-walled cap portion 21, and the thin-walled cap portions 21 are selectively cut open to be used as a through hole. Is a cable insertion hole having a slit 22 inclined with respect to a horizontal plane for easy insertion, and the connecting piece 2 straddling both sides across the slit 22.
4 is provided on the concave surface portion 23 for fitting and holding, and the slit 2
A seal member 25 is applied to 2 and is fastened by a connecting piece 24 so that the cable insertion hole penetrates the inside and outside of the closure. (FIGS. 11 to 1
2)

It is to be noted that a spacer 43 made of rubber or the like or an airtight tape is wound around the through hole or the cable lead-out hole formed by the cable insertion holes 20, 20 so that the outer peripheral surface of the cable can be closely attached. Is taken into consideration.

Since the spacer 43 uses a rubber elastic body in a natural environment, pressure change is caused between the outer circumference and the sleeve, between the inner diameter of the cable insertion hole and the outer circumference of the cable so that the spacer 43 can be contracted and expanded depending on the environmental temperature. By interposing a spacer corresponding to, the pressure change is minimized to secure the compressive stress and prevent the low temperature shrinkage. Further, the spacer 43 is slit to facilitate the cable insertion, and the outer peripheral surface and / or the inner peripheral surface. A plurality of ring-shaped ridges are provided on the projection. When the cables 10 having different outer diameters are inserted into the cable insertion holes 20 of the end face plate 3, the insertion holes having the same diameter can be used so that the outer diameter is the same as the insertion hole and the inner diameter is the outer diameter of the cable. It is preferable that the cable spacer 43 corresponding to the diameter is provided with mountain grooves on the inner diameter and the outer diameter thereof, and the airtightness can be secured by setting the groove on the cable. Further, the cable gripping metal fittings 4 and 4 are attached to both ends of the connecting metal fitting 8 fixed to the sleeve 1 so as to face the inner surface side of the end face plate 3 with mounting screws.
Further, the tension member is sequentially attached to the holding metal fitting 5 with a fixing screw, and a mounting metal fitting 15, for example, a storage tray is provided.
A tension member connector 9 is provided so that the core wire can be distributed and guided to be connected.

The cable tension member attached to the tension member grip 5 is of a single-hole type or a multi-hole type, but one or more cable insertion portions are provided on the attachment plate via an arm, and the sleeve 1 Holds the cable secured inside. That is, the cable jacket is stripped to the required length, the internal slot rod is stripped off and then cut to a predetermined dimension, and then the slot rod is stripped using a cutter or the like so that the tension member has a predetermined dimension. Finish preparing for connection. Grind and clean the outer jacket of the cable at the specified position in the circumferential direction, insert the cable spacer, and then cut and open the thin-walled cap and the slanted slit that will become the cable insertion hole of the end plate, and open the slit end. And insert the cable to penetrate the cable insertion hole,
A seal member with a mountain groove is attached to the slit portion, a connecting piece is fitted and the slit is closed and held, and a tape-like gasket is adhered so as to cover the slit portion of the outer peripheral portion of the end face plate. After that, attach the cable grips to the cable jacket using the required spacers and tighten them with the tightening bolts to the specified torque. Tighten with. The sleeve 1 is fastened while pressing the end plate against the lower sleeve. In this case, the gasket 7 is inserted into the gasket concave groove 6 of the sleeves 1 and 2, and is fitted to the end face plate gasket, then the upper sleeve 2 is put on the lower sleeve 1, and the sleeves are pressed against each other to move outward from the central portion. The fastening portions 70 are sequentially tightened and attached to each other. The sleeves 1 and 2 or the end face plate 3 are provided with a gas inlet port (not shown) having a valve, and a sealed gas is injected from the gas inlet port to ensure protection of the closure connection portion. I am doing it.

When assembling the connecting portion having such a structure, a spacer 43 is inserted into each cable 10 or a cable sealing material is wrapped around the cable, and the jacket of the end portion of the cable is fixed by the cable gripping metal fitting 4, and then the end face plate. The joint surfaces of the split sleeves 1 and 2 are abutted against the joint surface of 3 with the seal material and the joint surface of the sleeve 1 via the gasket 7, and the fastening portion 70 on the outer periphery of the sleeve is tightened, and the band is wound if necessary. By tightening the fastening portion 70 repeatedly at predetermined intervals, the airtightness of the sleeves 1 and 2 can be firmly maintained and a highly reliable sealing structure can be obtained. In this assembled state, the sleeve gasket 7 is provided between the vertically joined surfaces.
Is compressed in the radial direction, it is possible to maintain high airtightness with a comparatively small holding force, and a spacer is interposed between the end face plate 3 and the cable in the cable length direction, and the sealing material is provided. Thus, the postures of the sleeves 1 and 2 are stable, the assembling is facilitated, and the airtightness can be remarkably improved. This sleeve gasket 7 has a rectangular cross-section with rounded corners, concave grooves on the upper and lower surfaces to have a lip effect, and is considered to improve the assemblability and airtightness. I have.

On the other hand, when releasing the fastened state of the sleeves 1 and 2, the operating lever 75 of the fastening portion 70 is removed to release it from the hooking portion of the other sleeve 2, and the fastening is released to open the slit from the end face plate 3. , Remove the connecting piece 24 for the stop,
If the joint surfaces of the sleeves 1 and 2 are separated from each other, the cable can be easily replaced. Further, the outermost peripheral surface of the end face plate 3 is provided with a plurality of crests 26 over the entire circumference, and a compressive force with the inner surface of the sleeve is obtained to maintain airtightness. It is designed to be airtight. That is, the airtight holding mechanism between the engaging portion 3 ₁ and the end plates 3 of the sleeve 1 and 2, the Yamamizo 26 provided on the outer periphery of the end plate 3 receives a clamping force of the band sleeve 1, transmitted to Yamamizo 26 The airtightness can be maintained, and the end face plate gasket is not required to improve the workability of assembling and disassembling.

To closely fix the split joint surfaces of the sleeves 1 and 2, as shown in FIG. 8, one side in the longitudinal direction of the split edge portion of the sleeve is a detachable hinge 60 and the other side is a rotatable fastening portion 70. The workability is improved by making it possible to tighten with the sleeve gasket 7 installed in the sleeve concave groove 6 on the hinge side, and the upper sleeve 2 is rotated around the hinge as a fulcrum to automatically close the upper sleeve 2. Alternatively, the upper and lower sleeves 1 and 2 may be fitted in the concave groove 6. The hinge mechanism can be fixed to the upper and lower sleeves 1 and 2 or detached therefrom.

An end face plate 3 as shown in FIG. 11 may be selected to have an assembling and sealing structure with a sleeve. The end face plate 3 is provided with a plurality of grooved grooves 26 on the entire outer circumference so that a compressive force with the inner surface of the sleeve is provided. The obtained airtightness is maintained, and the airtightness with the cable is maintained by the compressive force transmitted to the inside. A center spacer is provided on the end face plate 3 if necessary, and the thin-walled cap portions 21 formed in the plurality of cable insertion holes 20 are selectively cut and opened to be used as through holes. A slit 22 that is easy to insert and that is inclined or parallel to a horizontal plane is provided, and the slit 22 is provided with a concave surface portion 23 that fits and holds the connection piece across both sides, and the slit 22 is provided with a seal member 25. It is applied and fastened by a connecting piece so that the cable insertion hole penetrates the inside and outside of the closure. (FIG. 12)

As shown in FIG. 13, a hollow cylindrical spacer 43 provided around the cable led out from the sleeve 1 is provided so that it can be expanded to one side.
A slit 44 for inserting a cable is provided on one side of the spacer 43, and ring-shaped mountain grooves 45 and 46 are provided on the inner and outer peripheries of the spacer 43, respectively, to make it easy to ensure airtightness, and to perform assembly and dismantling handling work. For simplification.

In this embodiment, the connecting and fastening of the split sleeves can be operated only on one side edge side, and when a sufficient working space cannot be secured on the other side edge side, for example, even in a narrow place such as a manhole, the operator side ( If there is a work space on one side edge side, it is possible to easily perform the work of attaching the closure. The two split sleeves 1 and 2 are connected by the hinge portion 60 and the fastening portion 70, and the sleeves 1 and 2 are connected. In the open state, the opening angle of both split sleeves is limited to a constant angle by the sloped surface provided on the hinge portion 60. That is, the rotation of both split sleeves in the opening direction is stopped at a constant angle.When one split sleeve is engaged with the connecting portion, the other split sleeve is opened more than necessary, and In addition, it is possible to prevent the inconvenience that the other split sleeve rotates and is located far from the working side, which deteriorates workability. Further, since the split sleeve main bodies of the two split sleeves 1 and 2 have the same shape, the fastening portion connecting member and the hinge connecting member for connecting the split sleeve bodies are attached to the fastening portion 70 and the hinge portion 60, respectively. At this time, the two divided sleeve bodies can be mounted without distinction, and these divided sleeve bodies can be manufactured by the same mold.

A fastening portion 7 provided on one side edge of the sleeve 1.
As shown in FIG. 7, a ring-shaped ring 71 of a metal round bar is fitted in the ring insertion recess 72 as shown in FIG. 7, and is composed of a rotatable operation lever 75 and a fulcrum protrusion portion 74, and the hinge portion 60 is As shown in FIG. 7, a loop-shaped ring 61 of a metal round bar is rotatably disposed in a ring receiving recess 63 of a ring insertion portion 62 provided on the other side edge of the sleeve 1, and the loop-shaped ring 61 is The other end is configured to be detachably locked to the insertion portion 62 of the sleeve 1 so that the sleeve can be freely connected and released, and in particular, the loop-shaped ring 61 and the loop-shaped ring 71 are provided on one side of the sleeve. It is preferable to have the same structure so that it can be used for both the edge and the other side edge.

As the stopper mechanism provided in the hinge portion 60, when the both side edges are aligned, the end faces facing each other are utilized, and the angle θ formed by the both end faces as an inclined face with the faces facing outward is 30 °. It is set to ~ 90 °. That is,
These end faces function as a stopper mechanism by the end faces abutting each other and being locked when the split sleeves 1 and 2 rotate, and the opening angles θ of the split sleeves 1 and 2 are 30 ° to 90 °.
If it is set to 90 ° or less, the split sleeve does not easily fall down to the non-working side, and workability is not impaired. Also, the upper and lower sleeves 1,
Grooves 6 and 6 are formed along the length direction at the end of one side edge and the end of the other side edge of 2, and a rod-shaped gasket 7 of a sleeve seal material is provided in the groove 6. , The gasket 7
Is made of an elastic body such as rubber and has an elliptical cross section, and is arranged in the groove 6 with its major axis direction facing the direction of clamping by the split sleeves 1 and 2. By being compressed, the space between the split sleeves 1 and 2 is sealed. Furthermore, if a styrene-based or olefin-based thermoplastic elastomer, which has a groove shape on the inner and outer surfaces of the sleeve and is excellent in compression set, is used, it is cheap and easy to manufacture and does not require a vulcanization process. It is easy to collect and reuse scrap.

[0023]

According to the present invention, a butt joint surface that covers the periphery of a cable connection portion and axially divides a cylindrical sleeve from which a cable can be led out is formed. For fastening, a hinge portion formed of a loop ring removably hooked from one sleeve to the other sleeve and a fastening portion are connected and integrated, and one sleeve near one opening end edge A plurality of hinge members made of loop-shaped rings are swingably provided in the ring receiving recess of the other, and a plurality of fastening portion receiving recesses are provided in the vicinity of the opening edge of the other opening at the same time. A plurality of locking recesses of the hinge member are provided at intervals near the opening edge, and an operation lever having a locking projection at the tip that fits into the fastening member receiving recess is provided near the other opening edge. A ring-shaped ring is pivotally supported in the ring receiving recess so that the pressing member fitted along the outside of the gasket and fitted in the groove formed on the outer side of the sleeve dividing joint edge can be used as a loop ring of the fastening part. With this, it is easy to butt the joint surfaces of the sleeves and tighten them with fasteners, and it is possible to perform the covering and accommodating work by the sleeves of the cable connection parts extremely quickly, and evenly around the entire circumference of the sleeves with few tightening points. It is possible to secure a highly reliable seal by compressing to, and the posture of the sleeve is stable and good handling, which facilitates the assembly work, and the connection and fixing can be done easily and safely, and it is excellent in terms of cost.
The structure of the cable connection closure can also be made simple and inexpensive.

[Brief description of the drawings]

FIG. 1 is a perspective view of a use state showing an embodiment of the present invention.

2 is a cross-sectional view of the sleeve of FIG. 1, (a) showing a split sleeve in a closed state, and (b) showing an open state.

3A and 3B are enlarged views of the hinge portion in the example of FIG. 2, FIG. 3A is a sectional view in a closed state, and FIG. 3B is an explanatory diagram of opening / closing operation.

FIG. 4 is an enlarged view of the fastening portion of the example of FIG.

5 is a perspective view of the fastening member of the example of FIG. 1. FIG.

FIG. 6 is a perspective view of the hinge member of the example of FIG. 1 in use.

FIG. 7 is an enlarged explanatory view of operating states of a hinge portion and a fastening portion of FIG.

FIG. 8 is a partial plan view of a sleeve.

9 is a partially cut side view of the sleeve of FIG. 8, (a) is an enlarged cross-sectional view taken along the line AA of FIG. 8, and (b) is B of FIG.
It is an expanded sectional view in the -B line.

FIG. 10 is a gasket part of the present invention, (a) is a side view,
(B) is a sectional side view taken along the line C-C.

FIG. 11 is an example of an end plate used in the present invention,
(A) is a front view, (b) is a partially cut plan view, and (c) is a side view.

FIG. 12 is a sectional side view taken along the line DD of FIG. 11a.

FIG. 13 is an example of a spacer, (a) is a side view,
(B) is a front view and (c) is a longitudinal sectional view taken along the line EE.

[Explanation of symbols]

 1 Sleeve 2 Sleeve 3 End Face Plate 4 Cable Grip Metal Fitting 5 Tension Member Grip Metal Fitting 6 Recessed Groove 7 Sleeve Gasket 8 Coupling Metal Fitting 9 Tension Member Connection Tool 15 Storage Mounting Metal Fitting 20 Cable Insertion Hole 21 Thin Cap 22 Slit 23 Concave 24 Connection Piece 25 Sealing member 26 Mountain groove 29 Spacer 60 Hinge portion 61 Loop ring 62, 72 Ring insertion portion 63, 73 Ring receiving recess 64 Stopper 65 Barrier 70 Fastening portion 71 Loop ring 74 Protrusion portion 75 Operation lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Hattori 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Recom Co., Ltd. (72) Inventor Satoshi Minashima 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Co., Ltd. In Recom (72) Inventor Osamu Hoshino 4-35-3 Yoyogi, Shibuya-ku, Tokyo Inside Japan Recom (72) Inventor Koji Yamagiwa 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo In Nippon Telegraph and Telephone Corporation (72) Inventor Tetsuya Hoshijima 3-19-2 Nishishinjuku, Shinjuku-ku, Tokyo Inside Nippon Telegraph and Telephone Corporation

Claims (4)

[Claims] 1. A butt joint surface that covers the periphery of a cable connection portion and axially divides a cylindrical sleeve from which a cable can be led out into two, and the joint surfaces of the divided sleeves that are opposed to each other are fastened. A hinge part formed of a loop ring removably hooked from one sleeve to the other sleeve and a fastening part are integrally connected.
A plurality of hinge members made of looped rings are provided at intervals in the ring receiving recess near the one opening end edge of one of the sleeves so as to be swingable, and a fastening portion receiving recess is provided near the other opening end edge. A plurality of locking projections are provided in the vicinity of one opening end edge of the other sleeve, and a plurality of locking recesses of the hinge member are provided at intervals, and a locking projection fitted into the fastening member receiving recess near the other opening end edge. An operating lever with a tip at the tip is pivotally supported by a ring ring in a ring receiving recess so that it can be swung, and a pressing member fitted along the outside of the gasket is fitted into a recess formed on the outside of the sleeve dividing joint edge. A cable connecting closure, characterized in that it is provided in the loop-shaped ring of the fastening portion. 2. The closure according to claim 1, wherein a stopper that holds the loop-shaped ring of the hinge portion at a predetermined rotation angle with the ring insertion portion as a fulcrum is provided on the outer side of the split joint edge of the sleeve. 3. The closure according to claim 1 or 2, wherein the gasket fitting concave groove formed on the split joint surface of the sleeve has gasket contraction portions with a contracted hole at both end portions of the concave groove. 4. A sleeve is provided so as to project along a gasket fitting concave groove of the sleeve at symmetrical positions of both sleeves, and is brought into contact with and joined to an inner wall surface of the other sleeve joining the barriers. Or the closure according to 3.