JPH08237852A - Fastening device for cable connection closures - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the fastening and holding of the split joint surfaces of the cable connection part container, improve the safety and airtightness, and provide an inexpensive structure that can significantly improve the assembly workability. A closure in which a butt joint surface that divides the sleeve 1 into two parts in the axial direction is divided into two parts, and the joint surfaces that face each other of the divided sleeve are connected and integrated by a fastening means. One side of the sleeve 1 in the longitudinal direction. Is a hinge mechanism, and the other side is tightened and connected with a buckle 30, and further tightened, so that the joint surface of the sleeve can be simply butted and tightened, and the covering and accommodating work of the cable connecting portion can be performed remarkably quickly. You can ensure a reliable seal with the sleeve.

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 fastening device in an optical cable closure.

[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 a fixing means such as a bolt or a band to hermetically protect the cable connecting portion.

Since the sleeve of the housing for protecting the connection portion of the conventional cable must maintain rigidity for preventing deformation of the sleeve and prevent ingress of moisture, the respective components of the sleeve are tightly coupled to each other. In addition, the connection between the cable end and the cable end must be tight, and the bolt or band fixing means cannot satisfy the airtightness normality, and the cable housing provided with the airtight material is complicated and expensive to manufacture. In other words, there is a problem in terms of durability as well, and management of tightening force and assembly workability are complicated to secure airtightness, which is a bad problem. The present invention is intended to eliminate these drawbacks of the related art, and aims to improve the width of fastening and holding of the split container of the cable connection portion, and enhances safety and airtightness as well as tightening for securing airtightness. It is an object of the present invention to provide a fastening device for a cable connection closure that can simplify force management and greatly improve assembly workability in a simple and inexpensive form.

[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. In the closure in which the joint surfaces are connected and integrated by fastening means, the fastening means includes a latch member that is latched from one sleeve to the other sleeve, and a rotation member that includes the latch member so as to be rotatable and movable back and forth. It is provided with a buckle for tightening and re-tightening, which is composed of a moving member and a lock piece that restricts the advance / retreat position of the hooking member.

[0005]

[Operation] After connecting the cable to the connection mechanism inside the sleeve, insert the gasket into the gasket groove of the lower sleeve,
After fitting it to the end plate gasket, cover the upper sleeve, press the sleeves together, and tighten the fastening devices one by one from the center to the outside. It is assembled by re-tightening each bolt to make the mounting posture of the cable sealing material and the end plate stable and strong, and the sealing property is also greatly improved, and it is safely used as a closure by the gas injected from the valve.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to an example in which the end face plate 3 fitted to the side face fitting portion 2 of the cylindrical sleeve 1 shown in FIGS. 1 to 17 is provided. Is pierced through 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 dividing sleeve 1 is a cylindrical housing, and both sides thereof can be divided into upper and lower parts along the axial direction by separating and joining surfaces, and a flame-retardant FRPP filled with synthetic resin such as PP resin or glass fiber. A butt joint surface composed of a styrene-based or olefin-based thermoplastic elastomer or the like, which is vertically divided into two in the axial direction, and end face plates 3 fitted to both ends of the sleeve 1, such as weather resistance and ozone resistance. And a rubber spacer such as EPDM having excellent properties such as properties, at least one cable insertion hole 20 is formed in the end face plate 3, and the cable insertion hole 20 is provided with a thin cap portion 21 capable of covering and separating the hole. At the same time, a slit 22 communicating with the cable insertion hole 20 is provided so as to penetrate the outer surface of the end plate so that the terminal cut by the slit 22 can be expanded. In addition to the facing joint surface of the end face plate 3, the divided joint face of the sleeve 1 is provided with a concave groove 6 into which the gasket 7 can be fitted and held, and the inner surface facing the end face plate 3 is provided with a cable outer periphery. A cable holding metal fitting 4 consisting of a pressing and holding piece, a tension member holding metal fitting 5, and a tension member holding tool 9
And a connecting metal fitting 8 provided with are fixedly mounted, the joint surfaces of the divided sleeves facing each other are connected by a fastening device 30, and a band 12 having a fastener 11 made of a screw is detachably wound around the outer circumference of the sleeve 1. It is deployed twice, and the sealability at the separation surface is enhanced so that it can be connected.

In order to closely fix the split joint surfaces of the sleeves 1 and 1, as shown in FIGS. 2 and 3, one side in the longitudinal direction of the split edge portion of the sleeve is attached and detached by a hook hinge 27 of a pin and an insertion hole. By using a hinge and enabling the other side to be tightened with the buckle 30 of the fastening device, workability is improved, and the sleeve gasket 7 installed in the sleeve concave groove 6 on the hinge side uses the hinge as a fulcrum to support the sleeve 1 The upper and lower sleeves 1 and 1 are automatically rotated by rotating the
It is also possible to fit it in the concave groove 6 of FIG. As the hinge mechanism, it is possible to fix the hinge mechanism to the upper and lower sleeves 1, or to mount and dismount the pins in one sleeve in the longitudinal direction and to insert the insertion holes in the other sleeve so as to be attached and detached.

The buckle 30 is shown in FIGS.
After hooking the hooks and fastening the upper and lower sleeves 1 and 1 to a predetermined size by one-touch by operating the handle as shown in Fig. 6, the size can be adjusted further by providing a retightening mechanism such as a screw rod and a nut. It is better to use the one that has been prepared.

In the example of FIG. 5, a handle 32 pivotally mounted on a bracket 31 as a buckle 30 and a screw rod 34 fitted on a rotating member 33 provided on the handle 32 can be fitted and supported on one sleeve 1 by one end. The pin 35 is provided, the bracket 31 is fixed to the other sleeve 1, the divided surfaces of both sleeves are fastened, and the nut 36 screwed into the screw rod 34 is rotated to rotate the pin 35 and the bracket. 31
The gap between and can be increased or decreased.

The buckle 30 of the example of FIG. 6 is the same as the example of FIG. 5, but instead of the pin 35, the hook portion 37 has a screw rod 3.
4 is provided so that it can be hooked on the pin 38 provided on the sleeve 1. Further, in the buckle 30 of FIG. 7, the bracket 32 and the handle 32 are also used, and the handle 32 is rotatably fixed to the sleeve 1 by the pivot pin 39 and fitted into the rotating member 33 provided on the handle 32. A hook portion 36 is screwed to one end of the screw rod 34, and a nut 36 is screwed to the other end of the screw rod 34,
It can be tightened.

The buckle 30 shown in FIG. 8 is similar to the example shown in FIG. 7, except that the hook arm 40 is used instead of the screw rod.
6 is a hook member 4 which becomes a top slidably by the pin and the long hole.
2 is provided and the top position can be changed and tightened and tightened with the screw 41.

In each of the examples shown in FIGS. 5 to 8, each buckle 30 is an effective fastener even if it is fixed to the band and used as a buckle band.

The band 12 is formed of a strip-shaped metal plate or the like which can be wound around the sleeve 1, hooks are provided at both ends thereof, and the bolt 1 is provided through engaging pieces engaged with the hooks.
1 is screwed so that the hooks can be connected and disconnected freely, but ribs (not shown) are provided on the outer periphery of the sleeve 1, and the band 12 is wound and mounted in the concave portion between the ribs. It is also considered to be useful for preventing the detachment.

The sleeve 1 is configured to be vertically separable so that 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. The surfaces can be connected and integrated by fastening means. That is, one side in the longitudinal direction of the sleeve is connected by a hinge mechanism such as a fixed hinge or a detachable hinge, and the other side is provided with a tightening and a buckle 30 as a fastening means capable of further tightening. The end 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 wall cap portion 21, and the thin wall cap portion 21 is selectively cut open. And used as a through hole,
A cable insertion hole having a slit 22 inclined to a horizontal surface for easy insertion of a cable is provided, and a concave surface portion 23 for fitting and holding a connecting piece 24 across both sides across the slit 22 is provided. The seal member 25 is applied to the connection member 24 and is fastened by the connection piece 24 so that the cable insertion hole penetrates the inside and outside of the closure. (FIGS. 9 to 11)

In addition, a spacer (not shown) 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 and 20 so that the outer peripheral surface of the cable can be closely attached. Is considered.

Since this spacer 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 it can be contracted and expanded depending on the environmental temperature. With a corresponding spacer
By reducing the pressure change as much as possible, the compressive stress is secured and low temperature shrinkage is prevented, and the spacer is slit to make it easier to insert the cable, and the outer peripheral surface and / or the inner peripheral surface has multiple ring-shaped ridges. It is provided with a protrusion. The end plate 3
When cables with different outer diameters are inserted in the cable insertion holes 20 of the above, the outer diameter is the same as the insertion hole and the inner diameter corresponds to the cable outer diameter so that the insertion holes with the same diameter can be used. It is preferable that the spacer 43 be provided with mountain grooves on its inner and outer diameters and set to the cable to ensure airtightness. Further, the cable holding 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, and the tension members are sequentially attached to the holding metal fitting 5 with fixing screws. A mounting fitting 15 having a pair of rings 14, 14 such as a storage tray is provided in the central portion, and a tension member gripper 9 can be provided so that core wires can be distributed and guided to be connected. (Figs. 1 and 16)

Further, as the cable gripping member 4, as shown in FIG. 15, a bending holding piece 17 along the outer circumference of the cable is rotatably provided on a receiving tool 16 having a cable insertion recess 16 ₁ by a pin 18 to open and close it. The cable is held and fixed by the screws 19 so that the cable can be easily gripped. That is, the receiving fixture 16 provided more integrally the cable insertion recess 16 _1, pin detachable from the receiving device 16 1
The hinge holding mechanism according to 8 is rotatably pivotally attached to the bending holding piece 17, and the bending holding piece 17 is configured to include a mounting screw 19 that is attached to and detached from the receiving tool 16 so that a cable can be gripped. A plurality of mountain-shaped protrusions are provided on the inner surface of the curved holding piece so that a gripping force can be obtained by engaging with the cable jacket. The curved holding piece 17 may have a detachable structure which is detachably attached to the receiving tool 16.

The cable tension member attached to the tension member gripping member 5 is of a single-hole type or a multi-hole type. The attachment plate is provided with one to a plurality of cable insertion portions via arms, 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. After the outer sheath of the cable at a predetermined position is polished and cleaned in the circumferential direction and the cable spacer 43 is fitted and inserted, the thin-walled cap portion 21 and the slanted slit 22 which become the cable insertion hole of the end face plate are cut out and opened. The cable is expanded to insert the cable, penetrates the cable insertion hole 20, and has a seal member 25 with a groove in the slit portion.
Then, the connecting piece 24 is fitted and the slit 22 is closed and held, and the tape-like gasket is adhered so as to cover the slit portion of the outer peripheral portion of the end face plate. After that, the cable gripping metal fitting is attached to the cable jacket by using a necessary spacer, and the tension member is fastened with a predetermined torque, and then the tension member is fixed to the tension member gripping metal fitting 5.
Then, use the tension member gripper 9 and tighten it with the tightening screw to the required torque. The sleeve 1 is fastened while pressing the end plate against the lower sleeve. 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 the protection of the closure connection portion. .

When assembling the connecting portion having such a structure, a spacer 43 is attached to each cable, or a cable sealing material is wound around the cable, and the jacket of the end portion of the cable is fixed by the cable gripping metal 4, and then the end face plate 3 is attached. The joint surfaces of the split sleeves 1 and 1 are butted against the joint surface of the sleeve 1 and the joint surface of the sleeve 1 via the gasket 7, and the buckle 30 on the outer periphery of the sleeve is tightened and retightened. A certain band 12 is wound and the fastener 11 is tightened and fixed. The buckle 30 is sequentially attached at predetermined intervals, and the tightening is repeated to firmly maintain airtightness over the entire length of the sleeve 1 to form a highly reliable sealing structure. can do. 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 in the length direction of the cable, and a sealing material is provided, so that the postures of the sleeves 1 and 1 are stable, the assembling is facilitated, and the airtightness can be remarkably improved. This sleeve gasket 7 has a rectangular cross-sectional shape with rounded corners and concave grooves formed on the upper and lower surfaces to provide a lip effect, and is considered to improve the assemblability and airtightness. There is.

On the other hand, when releasing the fastened state of the sleeves 1 and 1, the bolts of the fastener 11 are loosened and the band 1 is released.
2 is removed from the sleeves 1 and 1, the connection of the buckle 30 is released, the slit is opened from the end face plate 3, and the connecting piece 24 for stopping is used.
If the connection surface of the sleeve 1 is separated and the sleeve 1 is separated, the cable can be easily replaced.

As shown in FIG. 2, a hinge mechanism for a hooking hinge 27 and an insertion hole 28 is provided at the divided edge portion of the sleeve 1 so as to be detachable, and the hooking hinge 27 is inserted into the insertion hole. The upper and lower sleeves 1 and 1 can be easily fitted together simply by fitting the buckle 30 on the spot after fitting it on the site. That is, the hinge mechanism is
A fixed hinge or a removable hinge which is composed of a plurality of pins and corresponding insertion holes, or which is fixedly or detachably provided by a single rod penetrating the plurality of insertion holes.

As shown in FIGS. 9 to 11, the end plate 3 is a rubber spacer and has four cable insertion holes 20 of equal diameter or different diameter, and each slit has a slit 22 at its end. A cable can be inserted and fitted by opening the opening, and the change of the hole diameter of the cable insertion hole 20 and the cable diameter is handled through the end face plate 3. A seam spacer having a mountain groove on both sides made of plastic is inserted in the middle portion of the slit 22, and the diagonal slit 22 has a thin wall on one side and the outer peripheral surface of the end face plate 3 when the cable is not inserted. The cap portion 21 of the insertion hole can be cut and opened when the cable is inserted, which improves workability and airtight reliability. When the slit portion is cut off and used, a connecting piece 24 as an opening stopper is attached to the concave surface portion 23 in order to prevent the opening action and displacement of the cut outer peripheral portion in the step of reclosing after inserting the cable. To be done. Further, the outermost peripheral surface of the end face plate 3 has a plurality of mountain grooves 2 over the entire circumference.
6 is provided so that a compression force with the inner surface of the sleeve is obtained to maintain airtightness, and an airtightness with the cable is obtained by the compression force transmitted to the inside. That is, in the airtightness maintaining mechanism for the fitting portion 2 of the sleeve 1 and the end face plate 3, the mountain groove 26 is provided on the outer periphery of the end face plate 3 so that the tightening force of the band is transmitted to the mountain groove 26 and the airtightness can be maintained. In addition, the end face plate gasket is unnecessary, and the workability of assembling and disassembling can be improved.

In the example of FIG. 9, the end face plate 3 is a four-hole type having the same diameter, but the side face fitting portion 2 and the concave groove 6 into which the gasket 7 is fitted are provided around the end face plate 3. Also, an end face plate 3 as shown in FIG. 13 may be selected to have an assembled and sealed structure with the sleeve 1. The end face plate 3 is provided with a plurality of ridges 26 on the outer circumference to obtain a compressive force with the inner surface of the sleeve. The airtightness of the cable is maintained and the airtightness of the cable is maintained by the compressive force transmitted to the inside. A central spacer 29 is provided on the end face plate 3 as required, and the thin cap portions 21 formed in the plurality of cable insertion holes 20 are selectively cut and used as through holes. A slit 22 that is easy to fit and that is inclined or parallel to the horizontal plane is provided.
It is provided in the concave surface portion 23 that fits and holds the connection piece across both sides with 2 in between, the seal member 25 is applied to the slit 22, and the connection piece is fastened.
The cable insertion hole penetrates the inside and outside of the closure.

As shown in FIG. 14, 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 handle assembly and disassembly work. For simplification.

As shown in FIG. 16, the storage tray of the core fitting 15 can be mounted with 5 to 20 tapes / tray as a fixing method for each tape, and the storage trays are stacked in multiple stages and hinged. By connecting the parts, the required tray position can be opened and the workability can be improved. In addition,
The sleeve 1 is composed of a pair of semi-cylindrical bodies that are vertically divided into two parts along the longitudinal direction, and are formed in a thicker portion toward the divided joint surface of the sleeve and are concave on the outer joint surface. Although the groove 6 is provided to ensure the maintenance of airtightness, it is also possible to select a cable direct insertion shape in which the end plate 3 is omitted.

In the cable tension member gripper 51 provided in the sleeve, as shown in FIG. 17, a single or a plurality of arms 48 each having an insertion portion 47 for inserting a cable.
A device equipped with a handling plate 49 via a through-hole and a fixing tightening screw 50 on the insertion part 47 is attached to the tension member holding metal fitting 5 to apply tension to one or more cable centers. You can easily.

The fastener 11 provided on the band 12
As shown in FIG. 18, the handle 11 ₂ is pivotally attached to the bracket 12 ₂ and the band 12 is
A straight tightening screw rod 11 ₁ having a locking rod 11 _{3 that} can be locked to the hook 12 ₁ is pivotally attached to the handle 11 ₂ , and the handle 11 ₂ is swung to connect and fasten both ends of the band. The configuration is such that the tightening screw rod 11 ₁ can be rotated for additional tightening, so that the sleeve 1 is securely fastened and the handling is simplified.

In the example of FIG. 19, a handle 52 and a latch pin 55 which are respectively fitted and supported by a pair of locking jaws 1 ₁ and 1 ₁ projecting from the side edges of the split surfaces of the sleeves 1 and 1, in examples using the buckle 60 which is connected with Nejiochi 54 via the rotating member 53 as a fastening device, one end 52 of _the handles 52 by hooking the locking pin 55 in the locking jaws 1 ₁ of one of the sleeve 1 tighten face the locking jaws 1 ₁ of the other sleeve 1, by adjusting the distance between the locking pin 55 and the pivot member 53 pivots Nejiochi 54, one end 52 ₁ of the handle 2 the locking jaw part 1 ₁ the fitting, to be able Hamada', tightening joining split surfaces of the sleeve, or some as freely separated.

[0029]

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. In a closure integrally connected by fastening means, one side in the longitudinal direction of the sleeve is coupled by a hinge mechanism, and the fastening means is hooked from one sleeve to the other sleeve, and the hanging member. The joint surface of the sleeve is abutted against each other by being equipped with a rotating member that can be freely rotated and moved forward and backward, and a lock piece that restricts the forward and backward position of the latching member, and a buckle for further tightening. It is easy to tighten with a fastener, and the work of covering and accommodating the cable connection part can be performed extremely quickly. The uniform pressure can be ensured to ensure a reliable seal, and the securement of the tightening secures the posture of the sleeve in a stable and easy-to-handle manner, which facilitates the assembly work and reduces the tightening force for maintaining airtightness. It can be managed easily and safely, and the configuration of the cable connection closure can be made so simple and inexpensive.

[Brief description of drawings]

FIG. 1 is a perspective view of a use state in which an embodiment of the present invention is separated and a part is separated and a notch is shown.

FIG. 2 is an exploded perspective view of a portion of the sleeve of FIG.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a partially cut side view of the example of FIG. 1 in an assembled state.

5 is an enlarged view of the buckle of the example of FIG. 1, (a) is a front view and (b) is a side view.

FIG. 6 is another embodiment of the buckle, (a) is a front view,
(B) is a side view.

FIG. 7 is still another embodiment of the buckle, (a) is a front view and (b) is a side view.

FIG. 8 is a side view of yet another embodiment of the buckle.

9 is an enlarged view of the end plate of the example of FIG. 1, (a) is a front view,
(B) is a cutting plane view taken along the line AA.

10 is a sectional side view taken along the line BB of FIG.

FIG. 11 is a side view as seen from the outside of FIG.

FIG. 12 is another embodiment of the end plate, (a) is a front view,
(B) is a partially cut plan view, and (c) is a longitudinal sectional view.

13A and 13B are still another embodiment of the end plate, FIG. 13A is a front view, FIG. 13B is a partially cutaway plan view, and FIG. 13C is a side view.

FIG. 14 is an embodiment of a spacer, (a) is a side view,
(B) is a front view and (c) is a vertical cross-sectional view taken along line YY.

15 is a front view of the cable grip fitting of the example of FIG. 1. FIG.

16 (a) is a side view and FIG. 16 (b) is a plan view of the mounting bracket of the example of FIG.

FIG. 17 is an example of a cable tension member,
(A) is a front view and (b) is a plan view.

18 shows the fastener of the example of FIG. 1, (a) is a side view,
(B) is a plan view and (c) is a side view showing an operating state.

FIG. 19 is another example of the fastener, (a) is a front view, (b)
Is a side view thereof.

[Explanation of symbols]

1 Sleeve 2 Side Fitting Part 3 End Face Plate 4 Cable Grip Metal Fitting 5 Tension Member Gripping Tool 6 Recessed Groove 7 Sleeve Gasket 8 Connecting Metal Fitting 9 Tension Member Gripping Metal Fitting 11 Fastener 12 Band 14 Ring 15 Storage Mounting Metal Fitting 16 Receiving Tool 16 ₁ Cable insertion recess 17 Holding piece 18 Pivot 19 Screw 20 Cable insertion hole 21 Thin-walled cap part 22 Slit 23 Concave part 24 Connection piece 25 Sealing member 26 Mountain groove 27 Hinge 28 Inserting hole 29 Spacer 30 Buckle 31 Bracket 32 Handle 33 Rotating member 34 Screw rod 35 pin 36 Nut 37 Hook part 38 pin 43 Spacer 45, 46 Mountain groove 51 Cable tension member gripping tool 52 Handle 53 Rotating member 54 Screw punch 55 Locking pin 60 Buckle

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Tadashi Hattori 1-25-17 Himonbunya, Meguro-ku, Tokyo Toto Soken Co., Ltd. (72) Inventor Satoshi Mineshima 1-25-17 Himonya, Meguro-ku, Tokyo Shares Company Totou Soken Co., Ltd. (72) Inventor Koji Yamagiwa 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation (72) Inventor Koji Okamoto 1-6-1, Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (2)

[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, and the joint surfaces of the divided sleeves that face each other are connected by a fastening means. In the integrated closure, the fastening means includes a latching member that is latched from one sleeve to the other sleeve, a rotating member that includes the latching member so as to be rotatable and advanceable and retractable, and a latching member. Fastening device for a cable connection closure, characterized by comprising a lock piece for restricting an advancing / retreating position and provided as a buckle for tightening and further tightening. 2. The buckle comprises a handle pivotally attached to a bracket, and a pin or hook which can be fitted and supported on one sleeve at one end of a screw rod fitted to a rotating member provided on the handle. The fastening device according to claim 1, wherein the bracket is fixed to the other sleeve, the split surfaces of both sleeves are fastened, and the gap between the pin and the bracket can be increased or decreased by a lock piece of a nut screwed to the screw rod.