JPH09135526A - Closure for connecting cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a chain of works easily done in cable connection for a cable connection housing body and increase the safety and airtightness and improve an assembly workability remarkably. SOLUTION: In this closure, slits 22 which lead from cable insertion holes to an outside face of an end face plate 3 and which can be cut off are formed in the end face plate 3 and thin caps which can be cut off are installed in the cable insertion holes 20. At the same time, rigidity-preserving sealing members 25 are removably set on the slits 22 and cable insertion holes 20. Furthermore, curved holding pieces 17 which are located face to face with cable insertion recessed sections 16 of a cable holding metal fittings 4 are removably and rotatably installed by pivotal sections 18. Then, free ends 171 of the curved holding pieces 17 are fastened and connected by means of installation members 19. The cable insertion recessed sections 16 and the curved holding pieces 17 are provided with division spacers 33 which are so located that the division spacers of the cable insertion recessed sections 16 and those of the curved holding pieces 17 may face each other. Due to this structure, it is easy to bring junction faces of sleeves face to face with each other and tighten them with tightening tools. Therefore, a cable lead-out, a cable coating, and a cable housing work can be done very rapidly in a cable connection and the very reliable airtightness can be secured in the sleeves.

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 is attached by penetrating the cables on both sides of the cable connection part, and a cylindrical sleeve that can be divided into two parts by covering the connection part and is housed vertically. A structure is often used in which opposed split butted portions are connected by a fixing means such as a bolt or a band to be integrated so as to hermetically protect a 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, the handling of the set of cables led out from the end face plate is complicated, and the airtight material is required to sufficiently secure the cables. The cable housing provided with is complicated to manufacture, expensive and costly, and has a problem in terms of durability. Moreover, even if an end plate is used, tightening force management and assembly workability are complicated to ensure airtightness. There was a problem. The present invention is intended to eliminate these conventional drawbacks, in the cable connection closure to prevent deformation of the accommodation body of the cable connection portion, the built-in set of the cable is simple and enhances the safety and airtightness. , A cable connection closure that can secure the cable easily and safely and greatly improve the assembly workability,
The purpose of the present invention is to provide it in a simple and inexpensive form.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a sleeve for covering the periphery of a cable connecting portion has a butt joint surface which can be divided into two along the axial direction, and the joint surface is connected and integrated by a fixing means. A cylindrical sleeve having a plurality of cable insertion holes at both ends of the sleeve for inserting cables to be connected to the cable connecting portion; In a closure provided with a cable gripping metal having a portion, a releasable slit that communicates from the cable insertion hole to the outer surface of the end plate in the end plate, and a thin cap that can be cut in the cable insertion hole, and a slit and A rigid holding seal member is detachably fitted in the cable insertion hole, and a bending holding piece disposed opposite to the cable insertion concave portion of the cable gripping metal is pivotally supported. Detachable and provided with rotatably, connected fastening the free end of 該弯 song holding piece mounting member is obtained by freely opposed deploy removable each split spacer and the cable insertion recess and curved holding pieces.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The cable jacket is stripped to the required length, the slot rods inside are stripped off and cut to a predetermined dimension, and then the tension member is set to a predetermined dimension to complete the preparation of the cable connection. Let After circumferentially polishing and cleaning the jacket of the cable at the specified position and removing the rigid holding member, cut the thin-walled cap part and the slit part in the cable insertion hole of the end plate and open the slit end. Insert the cable to penetrate the cable insertion hole, install a seal member with a groove in the slit, fit the opening stop connection piece to hold the slit closed, and cover the slit on the outer peripheral part of the end face plate. Glue the tape-shaped gasket so that it fits in. After that, using a spacer with the necessary inner diameter for the cable gripping metal, it is fixed to the cable insertion recess and the curved holding piece, mounted on the cable jacket, fastened with a predetermined torque with the mounting member, and then the tension member is gripped by the tension member. Tighten the metal fittings with the tightening screws to the required torque. Then, while pressing the end plate against the lower sleeve, adjust it to the end plate gasket, cover with the upper sleeve, press the sleeves against each other, and tighten the fasteners in order from the center to the outside. Assembled by fastening in separate steps to stabilize and secure the mounting posture of the cable sealing material and the end plate, and also greatly improve the sealing performance, which is safely used as a closure by the gas injected from the valve. .

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention comprises a cylindrical sleeve composed of an upper sleeve 2 and a lower sleeve 1 shown in FIGS. 1 to 6, and an end face plate 3 fitted to a side fitting portion 3 ₁ of the sleeve. Explaining with an example of a provided closure, the trunk 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. There is. The sleeves 1 and 2 are cylindrical housings, and are configured so that both sides can be vertically divided at a separation joining surface along the axial direction.
It is made of synthetic resin such as flame-retardant FRPP or thermoplastic elastomer filled with PP resin or glass fiber, and is fitted to both ends of the sleeves 1 and 2 with the butt joint surface vertically divided in two in the axial direction. End plate 3 to be mounted, for example, EP excellent in various properties such as weather resistance and ozone resistance
A rubber plate material such as DM is provided, and the end face plate 3 is provided with a concave groove 6 which includes a facing joint face of the end face plate 3 and which can hold a gasket 7 in the divided joint face of the sleeve 1. On the inner surface facing each other, there is fixedly provided a connecting metal fitting 8 provided with a cable gripping metal fitting 4 composed of a pressing and holding piece along the outer circumference of the cable, a tension member gripping metal fitting 5 and a tension member connecting tool 9.

[0007] Incidentally, the gasket fitting groove 6 formed in the split joint surface of the sleeve 1, the two ends portions of the concave grooves 6 and the gasket挾圧portion ₆₁ of the narrowed opening as shown in FIGS. 4 to 6 ,
At the time of fitting the gasket 7, both ends are stretched and pushed in and held, and the temporary stop of the gasket makes it possible to surely prevent the fall and the collapse of the gasket 7. 7 ₁ is provided, the flange portion can also be pressed against pulling the outer end fulfill the tacking machine state. 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.

The end face plate 3 has at least one cable insertion hole 20 formed therein, and is integrally provided with a thin-walled cap portion 21 for covering and separating the cable insertion hole 20.
Removable slit 22 communicating with the cable insertion hole 20
Is provided so that the terminal cut by the slit 22 can be expanded, and the rigid holding seal members 25, 25 ₁ are detachably fitted in the slit 22 and the cable insertion hole 20. The curved holding piece 17 provided to face the cable insertion concave portion 16 of the metal fitting 4 is attached to the pivotal support portion 18.
, The free end 17 ₁ of the curved holding piece 17 is fastened and connected by a mounting member 19, and the split spacer 33 is detachably attached to the cable insertion recess 16 and the curved holding piece 17, respectively. It is deployed oppositely.

The sleeves 1 and 2 are vertically separable, and a sealing material is interposed between the end plates 3 so as to maintain the airtightness of the inside of 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, when the split sleeves 1 and 2 are fastened, the hinge portion 60 and the fastening portion 70, which are loop-shaped rings 61 and 71 that are detachably hooked from one sleeve 1 to the other sleeve 2, are integrally connected. It will be transformed.

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 has a plurality of cable insertion holes 20 each having a thin cap portion 21 and a rigid holding piece 25. After removing 25, the thin-walled cap portion 21 is selectively cut open to be used as a through hole, which is a cable insertion hole having a slit 22 inclined to a horizontal plane for easy insertion of the cable. The cable insertion hole 2 and the concave surface portion 23 that fits and holds the opening-stopping connection piece 24 that straddles both sides of the cable.
The rigid holding piece 29 abutting against the sleeve side wall in the center portion between 0,20 have a concave portion 28 which fits holding the seal member 25 ₁ into the slit 22 after incising the slit 22 is returning from the through cables The cable insertion hole 20 is adapted to be connected by an adhesive if necessary, and further fastened by a connection piece 24 so that the cable insertion hole 20 passes through the inside and outside of the closure. (FIGS. 7 to 12)

The end plate 3 is provided with the cable grip fitting 4
A locking portion 31 having a fitting insertion concave portion 30 that fits into the protruding portion 40 that is provided in a protruding manner is provided to help strengthen the fixing and prevent deformation of the end face plate 3 against external force. The opening preventing connection piece 24 and the rigid holding piece 29 are fitted into the concave portions 23 and 28 formed on the outer surface of the end face plate, but the concave and convex engaging portions 24 ₁ , 24 ₂ and 29 ₁ and 29 are formed on the opposing surfaces. _It is preferable to provide the structure ₂ to ensure the maintenance of the fitting and prevent the falling off.

As the end plate 3, there are four cable insertion holes 20 of rubber or resin spacers with equal or different diameters and slits 22 for each hole. Is adapted to be inserted and fitted, and the change of the hole diameter of the cable insertion hole 20 and the cable diameter is made through the end face plate 3. Intermediate seal member 25 ₁ of the joint spacer in which a Yamamizo on both sides with plastic of the slit 22, there as insertable become structure, oblique slit 22, when the cable is not inserted one side of the end plates 3 The outer peripheral surface is closed with a thin wall, and the cap portion 21 of the insertion hole is
Can be cut and opened to improve workability and airtight reliability. When the slit 22 is cut and used, a connecting piece 24 as an opening stopper is attached to the concave surface portion 23 in order to prevent an opening action and a deviation of the cut outer peripheral portion in a step of closing again after inserting the cable. Is done. Further, the outermost peripheral surface of the end face plate 3 is provided with a plurality of crests 26 over the entire circumference to obtain a compressive force with the inner surface of the sleeve to maintain airtightness, and to connect with the cable by the compressive force transmitted to the inside. Airtightness is obtained.
That is, holding the engaging portion 3 ₁ of the sleeve 1, the airtight holding mechanism of the end plate 3, the Yamamizo 26 provided on the outer periphery of the end plate 3, the hermetically transmitted a clamping force of the band to the sleeve 1 receives Yamamizo 26 As a result, the end plate gasket is not required, so that the assembling and disassembling workability can be improved. It should 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 outlet formed by the cable insertion holes 20 to allow the outer peripheral surface of the cable to be in close contact. ing. The hollow cylindrical spacer 43 provided around the cable led out from the sleeve 1 is provided with a slit 4 for inserting the cable on one side of the spacer 43 so that the spacer 43 can be expanded to one side.
4, the spacer 43 is provided with ring-shaped mountain grooves 45 and 46 on the inner circumference and the outer circumference, respectively, so that airtightness can be easily ensured, and the assembling and disassembling handling work can be simplified. (FIG. 13)

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. The spacer corresponding to the above and the pressure change are 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 has A plurality of ring-shaped ridges are provided so as to project. When cables having different outer diameters are inserted into the cable insertion holes 20 of the end face plate 3, the outer diameter is the same as the insertion hole and the inner diameter is the cable outer diameter so that the insertion holes having the same diameter can be used. It is preferable that the cable spacer 43 corresponding to the above is provided with mountain grooves on its inner diameter and outer diameter and is set to the cable to ensure airtightness.

Further, the cable holding metal fittings 4, 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, and the tension member is fixed to the holding metal fitting 5 by fixing screws. Mounting is performed sequentially, and a mounting fitting for storage, for example, a storage tray 15 is provided in the central portion, and a tension member connector 9 can be provided so that core wires can be distributed and guided to be connected. (FIGS. 1 and 4)

As the cable holding metal fitting 4, FIG.
As shown in FIG. 19, a bending holding piece 17 along the outer circumference of the cable is detachably and rotatably provided by a pin 18 in a main body having a cable insertion concave portion 16 and is opened and closed, and a cable is held and fixed by a screw 19 of a mounting member. In this way, the cable can be easily gripped. That is, the cable insertion recess 1
A body provided with a plurality of 6 and a curved holding piece 17 corresponding to the cable insertion concave portion 16 have a pivot support pin 18 projecting from one end thereof, and a fitting insertion hole 17 of a screw 19 at a free end 17 _{1 of the} other end. ₂ is an arm-shaped piece in which the pivot support pin 18 has a chamfered portion, and is detachably chamfered in a cable gripping metal fitting prevention structure, for example, in a locking recess 18 ₁ formed with a overflow opening. It is inserted at a position and rotatably supported. The screw 19 of the mounting member for fastening the curved holding piece 17 is a screw rod screwed to the rotating piece 19 ₁ which is rotatably supported by the cable grip fitting 4, and the head of the screw 19 is attached. The portion 19 ₂ is locked to the free end 17 ₁ of the curved holding piece 17, and a plurality of mountain-shaped protrusions are provided on the inner surface of the cable insertion recess 16 and the inner surface of the curved holding piece 17, so that the cable jacket is pressure-contacted. The divided spacers 33 are closely contacted with each other. It should be noted that the split spacer 33 is provided with mountain grooves 31, 3 on the inner and outer circumferential surfaces of the arc.
2 is an arc-shaped piece that has a convex portion 34 protruding from the outer peripheral surface of the cable insertion concave portion 16 and the curved holding piece 17.
It is provided by being removably fitted in the concave portions 36, 37 or the hole portion.

The hinge portion 60 and the fastening portion 70 are shown in FIG.
As shown in FIGS. 0 to 24, a plurality of hinge members 60 formed of loop-shaped rings 61 are swingably provided at intervals in a ring receiving recess 63 near one opening edge of one sleeve 1 and the other opening edge is formed. A plurality of fastening portion receiving recesses 73 ₁ are provided in the vicinity in the vicinity, and a plurality of engaging recesses 63 ₁ of the hinge member 60 are provided in the vicinity of the one opening edge of the other sleeve 2 in the vicinity, and the other An operation lever 75 having a locking projection 74 that fits into the fastening member receiving recess 73 ₁ near the opening edge is pivotally supported in the ring receiving recess 73 by a loop-shaped ring 71. , A pressing member 77, for example, a ring rod, which is fitted into a recessed portion 76 formed on the outer side of the split joint edges of the sleeves 1, 2 and extends along the outer side of the gasket, is movably provided on the loop-shaped ring 71 of the fastening portion 70. is there. In addition, the ring insertion portions 62 and 62 ₁ of the hinge portion 60 and the ring insertion portions 72 and 7 of the fastening portion 70.
2 ₁ and 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 have the same configuration so that the loop-shaped rings 61 and 71 can be commonly used. It is considered to be

A plurality of stoppers 64, each of which holds the loop-shaped ring 61 of the hinge portion 60 at a predetermined rotation angle with the ring insertion portion 62 as a fulcrum, are provided on the outer side of the divided joint edge of the sleeve 1 so as to project. Looped ring 6
1. . . 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 and hooked back to the ring insertion portion 62 ₁ of the ring engaging recess 63 _1. Thus, a plurality of loop-shaped rings 61 are simultaneously engaged at the same time, and one side of the sleeve is connected as the hinge portion 60 by one-touch operation, and then the other side of the sleeve can be fastened by the fastening portion 70. There is. (FIG. 23)

A fastening portion 7 provided on one side edge of the sleeve 1.
As shown in FIG. 24, a ring-shaped ring 71 made of a metal round bar is fitted in the ring insertion recess 72, and is composed of a rotatable operation lever 75 and a fulcrum protrusion 74, and the hinge 60 is As shown in FIG. 24, a loop-shaped ring 61 of a metal round bar is rotatably provided 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 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 on the hinge portion 60, when the both side edges are aligned, the end faces facing each other are used, and the angle θ formed by the both end faces as an inclined surface 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 °.
The configuration is limited to up to 90 °, and if it is set to 90 ° or less, the split sleeve does not easily fall down on 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.

The cable tension member attached to the tension member gripping member 5 is of a single-hole type or a multi-hole type, but the attachment plate is provided with one to a plurality of cable insertion portions via an arm, and the sleeve 1 Holds the cable secured inside. For example, as shown in FIG. 25, the cable tension member gripper 51 provided in the sleeve is provided with an insertion portion 47 into which a cable is inserted as shown in FIG. 25 on a handling plate 49 via one or a plurality of arms 48, and fixed to the insertion portion 47. It is possible to easily equip the tension member holding metal fitting 5 with a screw equipped with a screw 50 and apply tension to the center of one or more cables. The sleeve 1 or the end face plate 3 is 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. There is.

When assembling the connecting portion having such a structure, a spacer 43 is inserted into each cable 10 or a cable sealing material is wound around the cable 10 and the jacket of the end portion of the cable is fixed by the cable gripping metal 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 hinge portion 60 on the outer circumference of the sleeves holds them together and the fastening portion 70 is tightened. The band is wound and tightened to be fixed as necessary, and the fastening portion 70 is sequentially arranged at predetermined intervals.
By repeatedly tightening, the airtightness can be firmly maintained over the entire lengths of the sleeves 1 and 2, and a highly reliable sealing structure can be obtained. In this assembled state, since the sleeve gasket 7 is compressed in the radial direction between the vertically joined surfaces, it is possible to maintain high airtightness with a comparatively small holding force, and the end face plate 3 and A spacer is interposed between the cable and the cable length direction, and there is a sealing material,
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.

To closely fix the split joint surfaces of the sleeves 1 and 2, as shown in FIG. 23, 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 tightening with the sleeve gasket 7 installed in the sleeve concave groove 6 on the hinge side and the upper sleeve 2 with the hinge as a fulcrum.
It is also possible to automatically fit into the concave groove 6 of the upper and lower sleeves 1 and 2 by rotating in the direction of closing.
The hinge mechanism can be fixed to the upper and lower sleeves 1 and 2 or detached therefrom.

The storage tray 15 for the core wire fitting is one
As a fixing method for each tape, 5 to 20 tapes per tray can be mounted, and the storage trays can be stacked in multiple stages and connected by hinges so that the required trays can be opened and workability can be improved. is there.

In this embodiment, the connecting 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 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.

[0026]

According to the present invention, the sleeve for covering the periphery of the cable connecting portion has a butt joint surface which can be divided into two along the axial direction, and the joint surface is connected and integrated by a fixing means. The end face plate having a plurality of cable insertion holes for inserting the cables to be connected to the cable connecting part at both ends of the sleeve, and the cable having the insertion part for being inserted and inserted to the end face plate. In a closure provided with a gripping metal fitting, a releasable slit communicating with the outer surface of the end plate from the cable insertion hole in the end face plate, and a releasable thin-walled cap in the cable insertion hole are provided, and the slit and the cable insertion hole are provided. A rigid holding seal member is detachably fitted, and a curved holding piece, which is arranged opposite to the cable insertion concave portion of the cable gripping fitting, is attached and detached and pivoted by a pivot portion. In preparation for the present, the free end of the curved holding piece is fastened and connected by a mounting member, and the split spacers are removably opposed to the cable insertion concave portion and the curved holding piece so that the joint surface of the sleeve is abutted. It can be easily tightened with fasteners, the work of covering and accommodating the cable connection part can be performed extremely quickly, and the end face plate can be uniformly pressed at a small number of tightening points to ensure reliable sealing. The posture of the sleeve is stable and good to handle, which is useful for facilitating the assembling work, and the connection and fixing can be performed easily and safely, and the structure is simple and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a working state of an embodiment of the present invention, in which a part is separated, notched, and the inside is shown.

FIG. 2 is a front view of a part of the sleeve of FIG. 1 in a separated state.

FIG. 3 is a partially cut side view of the example of FIG. 1 in an assembled state.

FIG. 4 is a partial plan view of a sleeve.

5 is a cutaway side view of the sleeve of FIG. 4, (a) of FIG.
4 is an enlarged cross-sectional view taken along the line A-A of FIG.
It is an expanded sectional view in a line.

FIG. 6 is a gasket portion of the present invention, (a) is a side view,
(B) is a sectional side view taken along the line C-C.

FIG. 7 is an enlarged front view of an end plate used in the present invention.

FIG. 8 is a rear view of the example of FIG.

9 is a plan view of the example of FIG. 7. FIG.

10 is a cut side view of the separated state taken along the line DD of FIG.

FIG. 11 is a cut side view of the separated state taken along the line EE of FIG.

FIG. 12 is a cut side view of the separated state taken along the line FF of FIG. 7.

FIG. 13 is an example of a spacer used in the present invention,
(A) is a side view, (b) is a front view, and (c) is GG.
It is a cut-away plan view in a line.

FIG. 14 is a front view of a cable grip fitting used in the present invention.

FIG. 15 is a plan view of the example of FIG.

16 shows the main body of the example of FIG. 14, (a) is a side view showing a state in which the bending holding piece is separated, and (b) is a side view showing a state in which the bending holding piece is incorporated.

FIG. 17 is a curved retaining piece for the cable of the example of FIG.
(A) is a longitudinal sectional view of a separated state, (b) is an inner side view thereof, and (c) is a plan view.

FIG. 18 is a curved holding piece for a supporting wire in the example of FIG.
(A) is an inner side view, (b) is a side view thereof, (c) is an outer side view, and (d) is a plan view.

FIG. 19 is a sectional spacer of the example of FIG.
Is a side view seen from the split surface side, (b) is a front view thereof,
(C) is a cutting top view in the HH line.

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

21 is an enlarged perspective view of the hinge portion of the example of FIG.

22 is an enlarged front view of the fastening part in the example of FIG. 20. FIG.

FIG. 23 is an enlarged explanatory side view showing an operating state of the hinge portion and the fastening portion in the example of FIG. 20.

24 is an enlarged vertical cross-sectional view of the fastening portion of the example of FIG.
(A) shows the closed state, and (b) shows the open state.

FIG. 25 is an example of a cable tension member gripping tool, (a) is a front view and (b) is a plan view thereof.

[Explanation of symbols]

1, 2 Sleeve 3 End face plate 3 ₁ Side fitting part 4 Cable gripping fitting 5 Tension member gripping fitting 6 Recessed groove 7 Gasket 8 Connecting fitting 9 Tension member connection tool 10 Cable 15 Storage tray 16 Cable insertion recess 17 Curved holding piece 18 Pivot pin 19 Screw 20 Cable insertion hole 21 Thin-walled cap portion 22 Slit 24 Connection piece 25, 29 Rigidity holding piece 25 ₁ Seal member 26 Mountain groove 33 Divided spacer 43 Spacer 45, 46 Mountain groove 60 Hinge portion 61 Ring 70 Fastening portion 71 Ring 75 Control lever

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Hattori 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan Recom Co., Ltd. (72) Inventor, Kinji Minashima 4-35-3 Yoyogi, Shibuya-ku, Tokyo Japan 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 Nippon Telegraph and Telephone Corporation

Claims (7)

[Claims] 1. A cylindrical sleeve having a butt joint surface capable of being divided into two along the axial direction, the sleeve covering the periphery of the cable connection portion being a cylindrical sleeve integrally connected by a fixing means. An end plate having a plurality of cable insertion holes for inserting the cables to be connected to the cable connection part at both ends of the sleeve, and a cable gripping metal fitting that is provided opposite to the end plate and has an insertion part for inserting and inserting the cable. In the provided closure, the end plate is provided with a releasable slit that communicates from the cable insertion hole to the outer surface of the end plate, and a releasable thin cap is provided in the cable insertion hole, and a rigid holding seal member is provided in the slit and the cable insertion hole. Is detachably fitted, and further provided with a curved holding piece that is arranged opposite to the cable insertion concave portion of the cable gripping metal by a pivotal support portion so as to be detachable and rotatable. A closure for cable connection, characterized in that the free ends of the curved holding pieces are fastened and connected by a mounting member, and split spacers are detachably provided oppositely to the cable insertion recess and the curved holding pieces. 2. A rigid holding piece for disposing a stop-opening connecting piece spanning both sides of the slit so that the end plate can be fitted and removed, and a central portion between the cable insertion holes is in contact with a sleeve side wall. The closure according to claim 1, wherein the closure is arranged so that it can be inserted and removed freely. 3. The closure according to claim 1 or 2, wherein the end plate has a locking portion formed on an inner surface thereof, the locking portion having a fitting insertion concave portion that fits into a protruding portion provided on the cable grip fitting. 4. The opening prevention connecting piece and the rigid holding piece
The closure according to claim 1, 2 or 3, which is fitted in a recess formed on the outer surface of the end face plate and has a concave and convex engaging portion on the opposite surface. 5. The curved holding piece of the cable gripping metal fitting comprises:
An arm-shaped piece having a pivot support pin protruding from one end thereof and a fitting insertion hole formed at the free end of the other end, wherein the pivot support pin is formed in a cable gripping metal fitting recess. The closure according to claim 1 or 2, which is removably inserted into the closure. 6. A screw rod in which an attachment member for fastening the curved holding piece to the cable grip is screwed to a rotating piece pivotally supported by the cable grip, the screw rod being a screw rod. The head is locked to the free end of the curved holding piece.
The listed closures. 7. The split spacer is an arc-shaped piece having mountain grooves formed on an inner peripheral surface and an outer peripheral surface of the arc, and a convex portion projecting on the outer peripheral surface is a concave portion of the cable insertion concave portion and the curved holding piece. The closure according to claim 1, 5 or 6, which is detachably fitted into the hole.