JP3560295B2 - Closure for cable connection - Google Patents

Description

[0001]
TECHNICAL FIELD 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]
In general, a cable connection closure is composed of an end face plate attached so as to penetrate cables on both sides of a cable connection portion, and a vertically divided cylindrical sleeve that covers the connection portion and accommodates the connection portion. A structure is often used in which the opposed butted portions of the sleeve are connected and integrated by fixing means such as mounting screws to hermetically protect the cable connection portion.
[0003]
[Problems to be solved by the invention]
Since the sleeve of the housing for protecting the connection portion of the conventional cable must maintain the rigidity of the sleeve to prevent deformation and prevent moisture from entering, the components of the sleeve are tightly coupled to each other, and the cable The connection between the ends must also be tight, and the cable container provided with an airtight material is complicated and expensive to manufacture, requires cost, and has a problem in durability. There has been a problem that the management of the tightening force and the workability of the assembly are complicated.
SUMMARY OF THE INVENTION The present invention is intended to eliminate these conventional disadvantages, and is intended to prevent deformation of a housing of a cable connection portion, to enhance safety and airtightness, and to greatly improve sleeve assembly workability. It is an object of the present invention to provide an inexpensive closure with a simple structure.
[0004]
[Means for Solving the Problems]
The present invention covers the periphery of the connection portion of the cable, consists of the split sleeve of the same shape to form a butt joint surfaces bisects the cylindrical sleeve capable of deriving the cable in the axial direction, said each split sleeve to enter into the joint surfaces facing each other, with one split sleeve and the other split cable connecting closure of integrally connected between a fastening portion hinge portion consisting of a loop-shaped ring to freely hooked detachably to the sleeve In addition, an inclined surface facing outward is formed at both opening edges of each of the divided sleeves, and a hinge portion of the loop-shaped ring is swingably provided near one of the opening edges of the one of the divided sleeves. providing ring receiving ingress is provided a plurality at intervals Rutotomoni, in the vicinity of the other opening edge provided with a plurality fastening portion receiving recess is spaced, also the other split sleeve Square opening edge in the vicinity at a locking recess spacing to fit a looped ring of the hinge portion has provided a plurality Rutotomoni, engaging in the vicinity of the other opening edge which fits into the fastening portion receiving recess A plurality of ring-receiving recesses for pivotally supporting a fastening portion formed of a loop-shaped ring having an operation lever provided with a stop projection are provided at intervals, and the hinge sleeve and the fastening portion are used as the split sleeve. A loop-shaped ring of the fastening portion is formed by pressing a pressing member along the outside of the gasket , which fits into the recessed portion formed by the inclined surface formed outside the joining edge of the sleeve when joining them together , and seals the joining surface of the split sleeve. In preparation for.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
In the closure of the present invention, the upper sleeve is connected to the lower sleeve by the hinge part and the fastening part, the cable is inserted from the end face plate and connected to the connection mechanism in the sleeve, and the upper sleeve is centered on the hinge mechanism. Rotate and press the end face plate against the lower sleeve, cover it over the lower sleeve, hold down the upper and lower sleeves, tighten and fasten the sleeve joining surfaces that have been butted with the fastening part on one side of the sleeve, and apply a predetermined torque. Assembled with multiple fastenings to stabilize the mounting posture of the cable seal material and end face plate, greatly enhance the sealing performance, and use it safely as a closure with the gas injected from the valve. When the connection is released, the upper sleeve can be easily rotated about the hinge to open the sleeve, and the internal connection operation can be simplified.
[0006]
【Example】
Describes an example of a closure having a present invention and on the cylindrical sleeve consisting of sleeve 2 and the lower sleeve 1 Tokyo in FIGS. 1-10, the end plates 3, which is fitted to the side fitting portion 3 ₁ of the sleeve Then, the trunk optical cable 10 penetrates through the end face plates 3 and 3 and is fixed by the cable holding metal fitting 4, and the tension member of the cable is connected to the tension member holding metal fitting 5. The sleeves 1 and 2 are cylindrical housings, both sides of which can be divided up and down along the axial direction at a separation joint surface, and are made of a flame-retardant resin filled with a synthetic resin, for example, PP resin or glass fiber. It is composed of FRPP or a thermoplastic elastomer, and has a butt joint surface vertically divided into two parts in the axial direction, and an end face plate 3 fitted on both ends of the sleeves 1 and 2 such as weather resistance, ozone resistance and the like. A rubber plate material such as EPDM excellent in various properties is provided.
[0007]
In order to fasten the split sleeves 1 and 2, a hinge portion 60 composed of loop-shaped rings 61 and 71 detachably hung from one sleeve 1 to the other sleeve 2 and a fastening portion 70 are integrally connected. A plurality of hinge members 60 each formed of a loop-shaped ring 61 are provided in a ring receiving concave portion 63 near one opening edge of one sleeve 1 so as to be swingable at intervals, and near the other opening edge. with the fastening portion receiving recess 73 ₁ at intervals of a plurality, also at one opening edge near the other sleeve 2 providing a plurality at intervals the locking recess 63 ₁ of the hinge member 60 to the other opening the edge vicinity pivotally supported swingably ring receiving recess 73 in the loop-shaped ring 71 the operation lever 75 provided in the tip of the locking projection 74 to be fitted to the fastening member receiving recess 73 _1, further Three 1,2 split joint edges are fitted into concave portion 76 formed on the outside of, Aru pressing member 77 along the gasket outside, for example, a ring rod comprises movably in a loop ring 71 of the fastening portion 70.
[0008]
A plurality of loop-shaped rings 61... Provided on the outside of the divided joining edge of the sleeve 1 are provided with stoppers 64 that hold the loop-shaped ring 61 of the hinge portion 60 at a predetermined rotation angle with the ring insertion portion 62 as a fulcrum. . . The covered on sleeve 1 underneath sleeve allowed to stop rotating in the stopper 64, back hooked to the ring insertion portion 62 ₁ of the ring engagement recess 63 ₁ causes the sleeve 1 as a fulcrum gasket As a result, the plurality of loop-shaped rings 61 are simultaneously engaged with each other in a lump, and one side of the sleeve is connected as the hinge section 60 by one-touch operation, and then the other side of the sleeve may be fastened by the fastening section 70. I have.
[0009]
Gasket fitting groove 6 formed in the split joint surface of the sleeve 1, the ends portions of the concave grooves 6 and the gasket挾圧portion ₆₁ of the narrowed opening, when fitted gasket 7, stretching the ends The gasket 7 is pushed in and held to prevent the gasket 7 from falling down and to prevent the gasket 7 from falling down. However, if necessary, flange portions (not shown) are provided at both ends of the gasket 7. The temporary fixing mechanism can also be achieved by pulling and pressing the outer end.
Further, a barrier 65 is projected along the gasket fitting concave groove 6 of the sleeve 1 at a symmetrical position of the two sleeves 1 and 1 so as to abut against the inner wall surface of the other sleeve which joins the barrier 65 and is joined and divided. The structure prevents the sleeves 1 and 2 from shifting in the horizontal direction.
[0010]
Ring insertion portions 72 ₁ and the ring receiving recess 63 of the ring insertion portions 62 ₁ and the fastening portion 70 of the hinge portion 60, hinge member engaging recesses 63 ₁ and the ring receiving recess 73, the fastening member receiving recess 73 ₁ In order to use the loop-shaped rings 61 and 71 in common, it is considered to simplify the molding die with the same configuration. The end face plate 3 integrally includes a thin cap portion 21 that covers and can be separated from the provided cable insertion hole 20, and a slit 22 communicating with the cable insertion hole 20 is provided so as to penetrate an outer surface of the end face plate. The end cut at 22 is configured to be able to be expanded, and includes a joint surface facing the end plate 3 and a concave portion capable of fitting and holding the gasket 7 on the divided joint surface of the sleeves 1 and 2. A connection fitting 8 having a groove 6 and, on the inner surface side facing the end face plate 3, a cable holding metal fitting 4 composed of a holding member along a cable outer circumference, and a tension member holding metal fitting 5 and a tension member connecting tool 9. Is fixedly equipped.
[0011]
The sleeves 1 and 2 can be divided vertically so that 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. Can be connected and integrated by fixing means. That is, one side in the longitudinal direction of the sleeve is connected by the hinge portion 60, and the other side is provided with a fastening portion and a fastening portion 70 that can be further tightened.
The end face plate 3 is made of a rubber elastic body such as an oval shape, an elliptical shape, and a circular shape, and has a thin cap portion 21 in each of a plurality of cable insertion holes 20, and selectively cuts off the thin cap portion 21. The cable 10 is opened and used as a through-hole. The cable 10 is a cable insertion hole having a slit 22 inclined with respect to a horizontal plane so that the cable 10 can be easily inserted and inserted. It is provided on the concave portion 23 for fitting and holding, and is configured so that the sealing member 25 is applied to the slit 22 and fastened by the connection piece 24 so that the cable insertion hole passes through the inside and outside of the closure. is there. (FIGS. 11 and 12)
[0012]
In addition, it is considered that a spacer 43 made of rubber or the like or an air tight tape is wrapped 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 in close contact. ing.
[0013]
Since the rubber elastic body is used in a natural environment, the spacer 43 responds to pressure changes between the outer periphery and the sleeve, and between the inner diameter of the cable insertion hole and the outer periphery of the cable so that the rubber elastic body can be contracted and expanded according to the environmental temperature. A spacer is interposed to reduce the pressure change as much as possible to secure compressive stress and prevent low-temperature shrinkage. Further, the spacer 43 is slit to make it easier to insert a cable, and a ring is formed on the outer peripheral surface and / or the inner peripheral surface. A plurality of convex portions are provided. When a cable 10 having a different outer diameter is inserted into the cable insertion hole 20 of the end face plate 3, the outer diameter is the same as the insertion hole and the inner diameter is the outer diameter of the cable so that the insertion hole of the same diameter can be used. It is preferable that the cable spacer 43 corresponding to the diameter be provided with a groove in the inner diameter and the outer diameter thereof and set in a cable so as to secure the airtightness.
Further, cable gripping brackets 4 and 4 are attached to both ends of a connecting bracket 8 fixed to the sleeve 1 so as to face the inner side of the end face plate 3 with mounting screws, and a tension member is sequentially mounted to the gripping bracket 5 with fixing screws. A storage fitting 15, for example, a storage tray, is provided, and a tension member connecting tool 9 can be provided so that the core wire can be connected by distribution guide.
[0014]
The cable tension member attached to the tension member gripping member 5 is of a single hole or a multi-hole type, but is provided with one to a plurality of cable insertion portions via an arm on an attachment plate, and is fixed in the sleeve 1. Being holding the cable. That is, after stripping the cable jacket to the required length and cutting the internal slot rod to a predetermined size from the time of stripping, the slot member is stripped naked using a cutter or the like so that the tension member becomes the predetermined size. Finish preparing for connection. The outer jacket of the cable at a predetermined position is polished and cleaned in the circumferential direction, and after inserting the cable spacer, the thin cap portion and the oblique slit portion serving as the cable insertion hole of the end face plate are cut open, and the slit end is expanded. A cable is inserted through the cable insertion hole, a seal member with a groove is attached to the slit portion, a connecting piece is fitted, the slit is closed and held, and a tape is applied so as to cover the slit portion on the outer peripheral portion of the end face plate. Glue so that the gasket fits. Then, attach the cable holding bracket to the cable jacket using the necessary spacer, fasten it with the specified torque with the fastening bolt, and then attach the tension member to the tension member holding bracket using the fastening screw with the fastening screw. Tighten with. The sleeve 1 is fastened while pressing the end face plate against the lower sleeve. In this case, the gasket 7 is inserted into the gasket groove 6 of the sleeves 1 and 2, and is adapted to the end face gasket. Then, the upper sleeve 2 is put on the lower sleeve 1, and the sleeves are pressed down from the central portion to the outside. The fastening portions 70 are sequentially tightened and attached to each other.
The sleeves 1, 2 or the end face plate 3 are provided with a gas inlet (not shown) having a valve, and the sealed gas is injected from the gas inlet to ensure protection of the closure connection. It is.
[0015]
When assembling the connecting portion having such a structure, the spacer 43 is inserted into each cable 10 or a cable sealing material is wrapped, and the outer jacket of the cable end is fixed by the cable gripping metal 4, and then the end face plate 3 is joined. The joining surfaces of the split sleeves 1 and 2 are brought into contact with the joining surface of the sealing material and the sleeve 1 via the gasket 7 on the surface thereof, and the fastening portion 70 on the outer periphery of the sleeve is tightened. If necessary, the band is wound and tightened. Since the fastening is repeated, the fastening portion 70 is repeatedly tightened at predetermined intervals in order to maintain the airtightness over the entire length of the sleeves 1 and 2, thereby providing a highly reliable sealing structure.
In this assembled state, since the sleeve gasket 7 is compressed in the radial direction between the vertically joined joining surfaces, it is possible to maintain high airtightness with a relatively small clamping force, A spacer is interposed between the cable and the cable in the length direction of the cable, and there is a sealing material. As a result, the posture of the sleeves 1 and 2 is stabilized, the assembly is facilitated, and the airtightness can be significantly improved. This sleeve gasket 7 has a rectangular cross section and a rounded corner, and a concave groove is formed on the upper and lower surfaces so as to have a lip effect. I have.
[0016]
On the other hand, when the fastening state of the sleeves 1 and 2 is released, the operating lever 75 of the fastening portion 70 is released and removed from the hooking portion of the other sleeve 2, the fastening is released, the slit is opened from the end face plate 3, and the stop is performed. If the connecting piece 24 is removed and the joint surfaces of the sleeves 1 and 2 are separated and separated, the cable can be easily exchanged.
Further, the outermost peripheral surface of the end face plate 3 is provided with a plurality of mountain grooves 26 over the entire circumference, and a compressive force with the inner surface of the sleeve is obtained to maintain the airtightness. Airtightness is obtained.
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 In this manner, the airtightness can be maintained, and the end plate gasket is not required, so that the assembling and disassembling workability can be improved.
[0017]
As shown in FIG. 8, one of the divided edges of the sleeve is fixed to a detachable hinge 60 on one side in the longitudinal direction and the other side is fastened by a rotatable fastening portion 70 to fix the divided joint surfaces of the sleeves 1 and 2 closely together. By making it possible, the workability is improved, and the sleeve gasket 7 installed in the sleeve-side groove 6 on the hinge side rotates in the closing direction of the upper sleeve 2 with the hinge as a fulcrum, so that it is automatically moved up and down. It is also possible to fit in the concave groove 6 of the sleeves 1 and 2. The hinge mechanism can be fixed to the upper and lower sleeves 1 and 2 or detached therefrom.
[0018]
The end face plate 3 as shown in FIG. 11 may be selected so as to have an assembled sealing structure with the sleeve. The end face plate 3 is provided with a plurality of ridges 26 around the entire outer periphery to obtain a compressive force with the inner surface of the sleeve. The 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 as needed, and the thin cap portions 21 formed in the plurality of cable insertion holes 20 are selectively cut open and used as through holes. A slit 22 inclined or parallel to a horizontal plane is provided for ease of insertion, and a concave portion 23 that fits and holds a connection piece across both sides of the slit 22 is provided. It is configured to be fastened by connecting pieces so that the cable insertion hole passes through the inside and outside of the closure. (FIG. 12)
[0019]
As shown in FIG. 13, a hollow cylindrical spacer 43 provided around the cable led out from the sleeve 1 is provided with a slit 44 for inserting and inserting a cable on one side of the spacer 43 so as to be able to expand to one side. In addition, ring-shaped grooves 45 and 46 are provided on the inner circumference and the outer circumference of the spacer 43, respectively, so that airtightness is easily ensured, and assembly and disassembly handling operations are simplified.
[0020]
In this embodiment, the connection and fastening of the split sleeves can be operated only on one side edge side, and when the working space cannot be sufficiently secured on the other side edge side, for example, even in a narrow place such as a manhole, the worker side (one side edge side) ) Has a work space, so that the attachment work of the closure can be easily performed. 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 opened. In this case, the opening angle of both split sleeves is limited to a certain angle by the slope provided on the hinge portion 60. That is, the rotation of the two split sleeves in the opening direction is stopped at a fixed angle. When one of the split sleeves is engaged with the connection portion, the other split sleeve is opened more than necessary, and In addition, it is possible to prevent an inconvenience that the other split sleeve rotates and is located far from the working side, thereby deteriorating workability.
Further, since the split sleeve bodies of the two split sleeves 1 and 2 have the same shape, the connecting member for the fastening portion and the connecting member for the hinge for connecting the two split sleeve bodies are attached to the fastening portion 70 and the hinge portion 60, respectively. At this time, the mounting operation can be performed without distinguishing the two split sleeve main bodies, and these split sleeve main bodies can be manufactured by the same mold.
[0021]
A fastening portion 70 provided on one side edge of the sleeve 1 has a loop-shaped ring 71 of a metal round bar fitted in a ring insertion recess 72 as shown in FIG. As shown in FIG. 7, the hinge portion 60 has a loop-shaped ring 61 made of a metal round bar and turned into a ring receiving concave portion 63 of a ring insertion portion 62 provided on the other side edge of the sleeve 1. The loop-shaped ring 61 is movably disposed, and the other end of the loop-shaped ring 61 is detachably locked to the insertion portion 62 of the sleeve 1 so that the sleeve can be freely connected and released. It is preferable that the same configuration is adopted so that the 61 and the loop-shaped ring 71 can be used on either one side edge or the other side edge of the sleeve.
[0022]
As the stopper mechanism provided on the hinge portion 60, when the both side edges are aligned, the end surfaces facing each other are used, and the angle θ formed at both end surfaces as an inclined surface facing outward is 30 ° to 90 °. Is set to That is, these end faces abut against each other when the split sleeves 1 and 2 rotate and function as stopper mechanisms when they are locked, and the open angle θ of the split sleeves 1 and 2 is limited to 30 ° to 90 °. If the angle is set to 90 ° or less, the split sleeve is less likely to fall on the side opposite to the working side, and the workability is not impaired.
Further, at the end of one side edge of the upper and lower sleeves 1 and 2 and at the end of the other side edge, concave grooves 6 and 6 are formed along the length direction, and a rod-shaped sleeve seal is formed in the concave groove 6. The gasket 7 is made of an elastic material such as rubber, has an elliptical cross section, and has a major axis direction oriented in a clamping direction between the two split sleeves 1 and 2. It is arranged in the concave groove 6 and is compressed by the clamping force to seal between the two divided sleeves 1 and 2.
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 inexpensive and easy to manufacture, it does not require a vulcanization step. It is easy to collect and reuse scrap.
[0023]
【The invention's effect】
The present invention covers the periphery of the cable connection portion, forms a butt joint surface which bisects a cylindrical sleeve from which a cable can be led out in the axial direction, and fastens the joint surfaces of the split sleeves facing each other. A hinge portion and a fastening portion formed of a loop-shaped ring detachably hooked from one sleeve to the other sleeve are connected and integrated with each other, and are provided in a ring receiving concave portion near one opening edge of one sleeve. A plurality of hinge members made of a loop-shaped ring are provided so as to be swingable at intervals, and a plurality of fastening receiving recesses are provided at intervals near the other open edge, and near one open edge of the other sleeve. Is provided with a plurality of locking recesses of the hinge member at intervals, and an operating lever having a locking projection fitted to the fastening member receiving recess at the distal end near the other opening edge. By pivotally supporting the ring receiving concave portion, and further comprising a pressing member that fits into a concave ridge portion formed on the outer side of the sleeve divided joint edge and extends along the outside of the gasket in the loop-shaped ring of the fastening portion, The joining surfaces of the sleeves can be easily butted and fastened with fasteners, and the work of covering the cable connection with the sleeve can be performed extremely quickly, and the pressure can be uniformly pressed over the entire circumference of the sleeve with few fastening points for reliability. In addition to ensuring high sealing performance, the posture of the sleeve is stable and good for handling, which facilitates assembly work, can be easily and securely connected, is excellent in terms of cost, and the structure of the cable connection closure is simple. Inexpensive form.
[Brief description of the drawings]
FIG. 1 is a perspective view of a use state showing an embodiment of the present invention.
FIGS. 2A and 2B are cross-sectional views of the sleeve of FIG. 1, in which FIG. 2A shows a closed state of a split sleeve, and FIG.
3A and 3B are enlarged views of a hinge portion in the example of FIG. 2, wherein FIG. 3A is a cross-sectional view in a closed state, and FIG.
FIG. 4 is an enlarged view of a fastening portion in the example of FIG.
FIG. 5 is a perspective view of a fastening member of the example of FIG. 1;
FIG. 6 is a perspective view of the hinge member of the example of FIG. 1 in a used state.
FIG. 7 is an enlarged explanatory view of an operation state of a hinge part and a fastening part of FIG. 3;
FIG. 8 is a partial plan view of the sleeve.
9 is a partially cut-away side view of the sleeve of FIG. 8, (a) is an enlarged sectional view taken along line AA of FIG. 8, and (b) is an enlarged sectional view taken along line BB of FIG.
10A and 10B are side views and FIG. 10B is a cross-sectional side view taken along line CC of the gasket portion of the present invention.
11 (a) is a front view, FIG. 11 (b) is a partially cut plan view, and FIG. 11 (c) is a side view of an embodiment of an end plate used in the present invention.
FIG. 12 is a sectional side view taken along line DD of FIG. 11a.
13 (a) is a side view, FIG. 13 (b) is a front view, and FIG. 13 (c) is a longitudinal sectional view taken along line EE.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sleeve 2 Sleeve 3 End face plate 4 Cable gripping metal fitting 5 Tension member gripping metal fitting 6 Groove 7 Sleeve gasket 8 Connecting metal fitting 9 Tension member connecting metal fitting 15 Storage mounting metal fitting 20 Cable insertion hole 21 Thin cap part 22 Slit 23 Concave part 24 Connection Piece 25 seal member 26 groove 29 spacer 60 hinge portion 61 loop-shaped ring 62,72 ring insertion portion 63,73 ring receiving recess 64 stopper 65 barrier 70 fastening portion 71 loop-shaped ring 74 protruding portion 75 operating lever

Claims (4)

Covering the periphery of the connection portion of the cable, consists of the split sleeve of the same shape to form a butt joint surfaces bisects the cylindrical sleeve capable of deriving the cable in the axial direction and facing each other of the respective split sleeves the for fastening the joining surface, a cable connecting closure of integrally connected with the one split sleeve and the other sleeve segments and to detachably hooked hinge consisting of a loop-shaped ring to the fastening portion, the A ring receiving recess in which inclined surfaces facing outward are formed at both open end edges of each split sleeve, and a hinge portion formed by the loop-shaped ring is swingably provided near one open end edge of the one split sleeve. There Rutotomoni provided a plurality at intervals, in the vicinity of the other opening edge provided with a plurality fastening portion receiving recess is spaced and one open end of the other split sleeve In the vicinity are provided a plurality of spaced locking recesses spacing to fit a looped ring of the hinge portion Rutotomoni, in the vicinity of the other opening edge of the locking projection which fits into the fastening portion receiving recess A plurality of ring receiving recesses for swingably supporting a fastening portion formed of a loop-shaped ring having an operation lever provided are provided at intervals, and the split sleeves are fastened to each other by the hinge portion and the fastening portion. At this time, a loop-shaped ring of the fastening portion is provided with a pressing member that fits into a concave ridge formed by the inclined surface formed outside the sleeve divisional joining edge and seals the joint surface of the divisional sleeve along the outside of the gasket. A cable connection closure characterized by the following. The stopper loop ring of the hinge portion that holds a predetermined rotational angle the looped ring as a fulcrum ring insertion portion of the ring receiving recess, the upper portion of the split joint edge outside the ring insertion portion of the split sleeve 2. The cable connection closure according to claim 1 , wherein the closure is projected from an outer portion. 3. The cable connection according to claim 1, wherein the gasket fitting concave groove formed on the divisional joint surface of the division sleeve is a gasket pressure portion for compressing a gasket provided in the concave groove at both ends of the groove. use closure. 4. The split sleeve according to claim 1, 2 or 3, wherein a barrier is projected at a symmetrical position between the two sleeves along the gasket fitting groove of the split sleeve and abuts against the inner wall surface of the other sleeve which joins the barrier. Closure for cable connection .

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