JP5339183B2 - End plate in cable connection closure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate influence in a cable seal part which causes water immersion in a closure, and secure watertightness when various types of cables with different diameters are inserted and pulled out of a cable joint housing unit, suitable for a use environment/condition, and properly withstand opening and closing of a handle dozens of times or more, and safely secure a sealing property in the cable seal part. <P>SOLUTION: An outer case 4 of a two-split structure fitted to a cable insertion hole 2 is detachably mounted in an end face plate 3. A sealing rubber 5 and a bushing 6 are mounted in the outer case 4. A holding piece 7 supporting the sealing rubber 5 and the bushing 6 under pressure contact in the cable axial core direction is detachably mounted in the end face plate 3, and fastened/fixed by a tightening piece 8. The sealing rubber 5 and the bushing 6 are axially compressed along the axial longitudinal direction with a fastening piece 11, by a seal cap 10 with an inner pipe 9 internally fitted to the outer case 4. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an end face plate in a cable wiring closure that protects and accommodates a connection portion for connecting and branching a communication cable such as an optical cable or a metal cable.

In general, a closure connecting device for cable wiring uses a housing that encloses and protects a cable connection portion. This housing includes a vertically-divided cylindrical sleeve and closes both end faces of the cylindrical sleeve. It has a structure that consists of an end face plate through which a cable is inserted, has a structure that keeps the cable connection part including the connector in an airtight or watertight state by abutting the divided surfaces of the cylindrical sleeve and connecting them with a mounting and fixing means. It has been.
For end plates used for underground / overhead wiring and trunk cable entry / exit holes, when attaching a small-diameter cable to a fitting insertion hole (maximum diameter of the applicable cable) prepared in the past, There is a type in which a spacer or bush or a rubber tape of a certain thickness is wound around the gap between the insertion hole and the cable, and a sealing tape is used to ensure airtightness and watertightness. There is a type that uses an end face plate with a tapered cylindrical body and cuts the predetermined position of the taper part on site to correspond to the cable diameter, but both types have a sealing property at the joint with the cable Considering this, a method of fixing with a sealing tape or PVC tape has been adopted. (See Patent Documents 1 and 2)

Prior art document information relating to the invention of this application includes the following.
JP 11-89072 A JP-A-12-92688

  However, in the conventional method for sealing the entrance / exit holes of various cables with different diameters from large to small diameters in order to ensure watertightness, the gap between the cable and the cable insertion hole is filled and sealed. The rubber tape and sealing tape are wound so as to match the insertion hole, but the work is complicated, and it is particularly troublesome to remove and replace the sealing tape when adding and maintaining cables. When inserting into the cable insertion hole, the quality of the winding tape has hindered the sealing performance and often causes water in the closure, so it is difficult to fill the gap even if the sealing tape is wound. Work is not easy due to the work to clean up the variation, and the quality of the product is likely to vary depending on the skill of the operator, and the variation in cable diameter is large. For this reason, it is necessary to replace the taper end face and rubber tape depending on the usage environment and conditions, and there is a problem of loss of work time and repair costs. If you use spacers or bushes, you must select and use a number of spacer bushes with cable insertion holes that match the cable outer diameter. Since various types of spacers and bushes corresponding to cables of different diameters must be stored, there is a drawback that handling is extremely troublesome.

  The present invention intends to eliminate these conventional drawbacks, eliminates the influence of the cable seal portion that causes flooding in the closure, and ensures that various cables of different diameters are also watertight in and out of the housing for connecting cables. In accordance with the usage environment and conditions, it is possible to accurately respond to a large number of sleeve opening and closing times of several tens of times, and it is possible to safely maintain the sealing performance of the cable seal part, and to assemble and disassemble the sleeve The purpose is to provide an end face plate in a cable connection closure that can be handled at a low cost without greatly reducing the work time and adding cables and replacing parts during maintenance. It is.

  The present invention relates to a cable connection closure in which end face plates with cable insertion holes are detachably fitted to both end faces of a cylindrical sleeve that encloses the periphery of a cable connection portion. An outer cylinder having a two-part structure is detachably attached to the end face plate, and a seal rubber having a slit in the outer cylinder and a bush made of a rubber-like elastic body having a butt separation surface are attached, and the seal rubber and the bush Is attached to the end face plate so as to be detachable and fixed by a fastening piece, and the seal rubber and the bush are provided in the outer cylinder. By compressing the longitudinal direction of the shaft with a fastening piece with a seal cap with a cylinder, it is possible to maintain the sealing performance of the cable according to the usage environment and conditions It was.

  Further, in the end face plate in the cable connection closure of the present invention, the end face plate includes an arc concave portion that forms a part of the cable insertion hole and a concave portion that fits the holding piece, and is attached to the concave portion. A gasket is detachably coated on the outer periphery of the end face plate including the holding piece in a ring shape, and the holding piece fixed by the gasket includes an arc concave surface forming a part of the cable insertion hole, Rotating fulcrum portions and temporary fixing portions, which are respectively fitted to a pair of concave surface portions formed on both side surfaces of the end surface plate, project in a flange shape on both side surfaces of the holding piece, and further to the end surface plate by the concave and convex engaging portions. With this connection structure, the cable wiring work can be simplified and the handling can hardly be made due to the skill of the operator.

  Furthermore, the end face plate of the present invention is detachably connected with a hinge part having a drop-off preventing function by forming a cylindrical pocket with an outer cylinder wall of a two-part structure in which the outer cylinder has a division surface in the central longitudinal direction, By installing positioning ribs on the outer cylinder peripheral surface that can be fitted in the ribs formed along the circumference of the cable insertion hole on the end face plate and guided in the axial direction, the assembly and disassembly work time of the cable seal part is greatly increased. Can be shortened.

In the end face plate of the present invention, the gasket is made of EPDM rubber or an elastomer and is abutted and joined on opposite faces with both end edges as inclined faces, and a plurality of ribs are arranged on the outer peripheral face at intervals in the cable axial direction. And a fixing pin hole that is fixed to the concave and convex engaging portion protruding from the holding piece and is detachably attached to the end face plate and does not penetrate the buffer zone By providing this, self-sealing corresponding to the internal pressure or external pressure in the closure is possible, and it is preferable to ensure the sealing performance.

  As an outer cylinder used for the end face plate of the present invention, a boss and a boss hole formed on an opposing surface by a mounting piece in which a semi-arc-shaped bush along the circumference of a cable insertion hole is provided on one side of the outer cylinder. In addition, the seal rubber is a cylindrical body having a slit and made of EPDM rubber or elastomer having a hardness of 0 to 40 Hs, so that the cable grip force is constant and the cable is axially oriented. Maintains pressure contact accurately and stably.

Two Moreover, in the end plate of the present invention, the sealing rubber is made of EPDM rubber or elastomer in the tubular body having a slit, before alkoxy Rukyappu is provided with a flange at one end consists of a nylon resin, in the longitudinal direction at the center An inner cylinder that is housed in a cylindrical pocket of the outer cylinder is formed by a cylindrical wall of a two-divided structure that is divided, and is detachably fixed by a boss and a boss hole engaging part that are formed on opposing flange parts, Furthermore, the sealing member is cabled by inserting the fastening pieces into the mounting holes provided in both flange portions and fastening and connecting to the outer cylinder and axially compressing the seal rubber installed in the cylindrical pocket of the outer cylinder in the axial longitudinal direction. It is preferable that the pinch can be arranged with a size corresponding to the diameter to improve the sealing performance.

  The present invention relates to a cable connection closure in which end face plates with cable insertion holes are detachably fitted to both end faces of a cylindrical sleeve that encloses the periphery of a cable connection portion. An outer cylinder having a two-part structure is detachably attached to the end face plate, and a seal rubber having a slit in the outer cylinder and a bush made of a rubber-like elastic body having a butt separation surface are attached. A holding piece for pressure-contacting and supporting the cable in the axial direction of the cable is detachably mounted on the end face plate and is fastened and fixed by the fastening piece, and the seal rubber and the bush are mounted on the outer cylinder. By axial compression in the longitudinal direction of the shaft with a tightening piece with a seal cap, the influence on the cable seal part that causes water in the closure is eliminated, and each of the different diameters The cable seal is sealed to ensure the watertightness of the cable housing and the housing for connecting the cable. The cable seals can be used for a number of times of opening and closing of the sleeves more than tens of times according to the usage environment and conditions. The end face plate for cable connection closures can be secured at low cost without the need for replacement of parts, etc. during the addition and maintenance of cables. it can.

In the present invention, the end face plate includes an arc concave surface portion that forms a part of the cable insertion hole and a concave portion that fits the holding piece, and is related to the outer periphery of the end face plate that includes the holding piece attached to the concave portion. A gasket is detachably covered in a ring shape at the stop portion, and the holding piece includes an arc concave surface that forms a part of the cable insertion hole, and a pair of concave surface portions formed on both side surfaces of the end face plate. The rotating fulcrum part and the temporary fixing part to be fitted respectively project in a flange shape on both sides of the holding piece, and the connection structure to the end face plate by the concave and convex engaging part makes it easy for cable wiring work It can be handled to ensure a good sealing property, which is unlikely to cause a difference in quality due to manufacturing and operator skills.

  Further, the outer cylinder fitted to the end face plate of the present invention is detachable by a hinge part having a function of preventing a drop by forming a cylindrical pocket with an outer cylinder wall having a two-part structure having a dividing surface in the central longitudinal direction. Can be attached only in the same direction by providing positioning ribs on the outer cylinder peripheral surface that can be fitted to the rib formed along the circumference of the cable insertion hole of the end face plate and guided in the axial direction Thus, the assembly and disassembly work time of the cable seal portion can be greatly shortened, and workability can be improved.

Further, the gasket is made of an EPDM rubber having a hardness of Hs30 to 60, preferably a hardness of Hs35 to 55, and is abutted and joined on opposite surfaces with both end edges as inclined surfaces. Open and arranged side by side, and equipped with a pin hole for fixing that is locked to the concave and convex engaging portion protruding from the holding piece, and is detachably attached to the end face plate, corresponding to internal pressure or external pressure by providing the lightening holes not penetrating into the buffer zone for to Resid Lumpur retention, sealing of the fitting mounting of the meat cut hole in the internal pressure or external pressure is applied when the hole expansion sleeve and end plates The self-sealing corresponding to the internal pressure or the external pressure in the closure is possible, and the guarantee of the sealing performance can be ensured.

  Still further, in the present invention, the outer cylinder fitted and arranged on the end face plate is formed on the opposing surface by a mounting piece in which a semi-arc-shaped bush along the circumference of the cable insertion hole is provided on one side of the outer cylinder. The sealing rubber is fixed at the engaging portion between the boss and the boss hole and inserted into the cylindrical pocket of the outer cylinder, and the sealing rubber is a cylindrical body having a slit and having a rubber or elastomer hardness of 0 to 40 Hs, whereby a sealing member Can be arranged with a size corresponding to the cable diameter to improve the sealing performance.

In this case, the alkoxy Rukyappu before which fits into the outer cylinder to be deployed in the end plate, a flange at one end, the outer cylinder of the cylindrical in the cylindrical wall of the two-piece structure which is bisected in the longitudinal direction at the center An inner cylinder is built in the pocket, and is detachably fixed by the bosses and boss hole engaging parts formed on the opposing flanges, and the fastening pieces are inserted into the mounting holes provided on both flanges. tighten linked to the outer tube by axial compression the sealing rubber to be decorated in the cylindrical pocket of the outer cylinder in the axial longitudinal direction, aim to maintain the excellent sealing properties depending on use environment and conditions of cable seal portion Te be able to.

  In the embodiment of the present invention, a seal rubber is fixed to a necessary portion of the cable, an outer cylinder having a two-part structure in which a bush is attached in a pocket is assembled to the seal rubber, and the outer cylinder is inserted into a recess of the end face plate. Then, after temporarily holding the holding piece on the end face plate, the screw of the holding piece is fastened and fixed. Next, a seal cap having an inner cylinder that can be inserted into a pocket of the outer cylinder is fitted and attached to the outer cylinder, the fastening piece of the seal cap is tightened, and the seal rubber is axially compressed in the longitudinal direction of the shaft. And a seal cap having an inner cylinder mounted in the outer cylinder, and can be clamped to a size corresponding to the cable diameter, and the seal rubber and the bush can be attached to the outer periphery of the cable to ensure the sealing performance. A cable that passes through the end face plate is fitted with a sleeve having a two-part structure covering the end face plate, and a lock mechanism provided in the sleeve is fastened to greatly improve the sealing performance. The seal rubber and bushing in the outer cylinder are pressed in the axial direction of the cable by tightening the fastening pieces, and further sealed by axial compression in the longitudinal direction of the cable. Can be used safely and reliably.

The outer cylinder of the two-part structure in which the seal rubber and the bush are housed is composed of an outer peripheral wall that is divided into two in the center in the longitudinal direction, and is provided so that it can be fastened by fastening the fastening piece on the holding piece. Therefore, it can be handled by dividing and assembling into two parts, the cable insertion and clamping work can be performed remarkably easily, the shaft compression of the seal rubber is reliable, the sealing performance can be greatly improved, and the seal member can be used. The watertightness after cable assembly can be maintained.
Accordingly, since the crimping as it was along the cable pressing surface of the sealing member, a seal member is elastically deformed into close contact without a gap on the outer periphery of the cable by press-fitting of Shirukya-up in clamping force of the clamping pieces It is easy to secure the airtightness and watertightness of the cable without using sealing tape, and it is also easy to take in and out of cables of different diameters, shortening the assembly and disassembly work time at the cable seal part, adding, Even during maintenance, parts need not be replaced, and costs can be significantly reduced.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 13 show an end face plate according to a first embodiment of the present invention. FIG. 1 shows the whole, FIG. 2 and FIG. 3 show the use state, and FIGS. 4 to 13 show the parts. 14 to 16 show an end face plate according to another embodiment of the present invention.
The first embodiment will be described with reference to the examples of FIGS. 1 to 13. The end plate 3 having the cable insertion hole 2 is detachably fitted to the center of both end surfaces of the cylindrical sleeve 1 enclosing the periphery of the optical cable connecting portion. In the cable connection closure to be deployed, the outer cylinder 4 having a two-part structure fitted into the cable insertion hole 2 is detachably attached to the end face plate 3, and slits are formed in the pockets 4 ₁ and 4 ₂ in the outer cylinder 4. 5 ₁ and the sealing rubber 5 having a butt wearing the bush 6 made of a rubber-like elastic body having a separation surface _61, the seal rubber 5 and the holding pieces 7 and the bush 6 is pressed against the supporting cable axial direction is the There is an inner cylinder 9 that is detachably mounted on the end face plate 3 and is fastened and fixed by fastening pieces 8 such as bolts and nuts, and the seal rubber 5 and the bush 6 are housed in the outer cylinder 4. Shi It is adapted to the axial compression screw, the axial longitudinal direction in the fastening piece 11, such as a bolt by Le cap 10. (FIGS. 1 to 6)

As the end face plate 3, a plurality of arcuate concave portion forming part of the cable insertion hole 2 on the outer peripheral side of a plate-shaped end plates of substantially elliptical 2 ₁ and the recess 3 ₁ for fitting the retaining piece 7 provided, and removably cover deployed in a ring gasket 12 with locking portion 13 to the outer periphery of the end plate 3 including the retaining piece 7 mounted on the concave portion 3 ₁ consists of a boss and boss hole of the cylindrical sleeve 1 It is fitted to the center of both end faces. (FIGS. 4 and 5)
Also, the coercive Jihen 7 includes an arc concave surface 2 ₂ forming part of the cable insertion hole 2 as shown in FIG. 6, a pair of concave portions 3 ₂ formed on both sides of the end face plate _3, 3 ₃ a rotation support portion ₇₁ for fitting respectively the temporary fixing portions 7 ₂ projecting from the flange-like on both sides of the holding pieces 7, and further a coupling structure of the end plates 3 by uneven engagement portion .

Incidentally, the outer cylinder 4 to be fitted on the end face plate 3, a cylindrical pocket 4 ₁ for fitting a sealing member between the sealing rubber 5 and the bush 6 in the outer cylinder wall of the two-piece structure having a split surface in the central longitudinal direction , to form a 4 _2, configured to fit with the cylindrical pocket 4 _1, 4 ₂ hollow cylindrical seal rubber 5 with a slit 5 _1, and a bush 6 having a butt splitting surface 6 _1, The outer cylinder 4 is fastened by the fastening piece 8 so that the joint surface of the seal rubber 5 and the bush 6 to the cable C is pressed and clamped. In this case, the outer cylinder 4 is provided with the outer cylinder 4 so that the outer cylinder 4 is opposed to the hinge part 14 having a function of preventing the drop-off on the outer side surface of the separated butted surface. It is also possible to provide a hinge part fall-off preventing structure that is freely connected and that prevents the pivot from rotating when the hook is inserted and engaged.
The outer cylinder 4 is the end plate 3 provided with positioning ribs 4 ₄ can be guided in the axial direction fitted to the rib 4 ₃ formed along the circumference of the cable insertion hole 2 of the end plates 3 to the outer cylinder circumference Easy to assemble. (FIGS. 7 to 10)

Gasket 12 used in the end face plate 3 is joined abut in face to face as an inclined face both edges made of EPDM rubber, juxtaposed spaced plurality of ribs 12 ₁ in the cable axis direction on the outer peripheral surface to together, there is detachably mounted to the end plate provided with a locking portion 13 provided with a solid-titration, pin hole is protruded in the holding pieces 7, sealability retained which corresponds to the internal pressure or external pressure lightening hole 12 ₃ good to a providing a plurality not penetrating into the buffer zone 12 ₂ for. (Fig. 12)
In particular, the belt-like gasket 12 is wound around the outer periphery of the end face plate 3, and when the end faces of both ends are abutted as inclined surfaces, the inclined surfaces are abutted and overlapped to form a fitting surface between the end face plate 3 and the sleeve 1. It is effective to improve the sealing performance.

Further, as the bushing 6 which is furnished in the pocket 4 ₂ of the end outer cylinder 4, on the opposing surface by the attachment piece 6 ₂ projecting from the semicircular bush along the circumference of the cable insertion hole 2 on one side and fixing at the engaging portion of the boss 6 ₃ and the boss hole 6 ₄ formed, the outer cylinder 4 can press the cable axial direction the bush 6 the cable C upon fastened with fastening pieces 8 seals It is designed to enhance sex. (Fig. 13)
The seal rubber 5 provided in the outer cylinder fitted to the end face plate is preferably a hollow cylindrical body having a slit and EPDM rubber or an elastomer having a hardness of 0 to 40 Hs. For example, hardness Hs 0-30 [penetration 40-90 (10-1 mm)], preferably hardness Hs 5-20, elongation 500-2000, preferably 800-2000% and tensile strength 10-60 kg / cm ² vulcanized. A rubber composition is selected and used.
In this case, the seal rubber 5 is a low-hardness rubber (Shore hardness 0 to 40) having a large elongation and a large tensile stress (modulus), that is, a penetration of 40 to 90, preferably 50 to 70 (10 ⁻¹ mm). Vulcanization of JIS K2560) with elongation of 500 to 2000%, preferably 800 to 2000% (JIS K6301) and tensile stress of 100% -0.5 kgf / cm ² , 300% -1.0 kgf / cm ² (JIS K6301) Rubber compositions such as those of low hardness (Hs) such as EPR, EPDM, silicone rubber (Q), butyl rubber (IIR), styrene / butadiene rubber (SBS) or fluorine rubber (FKM).

Before carboxymethyl The Rukyappu 10, a flange portion 10 ₁ at one end, the inner cylinder in the cylindrical wall of the two-piece structure which is bisected in the longitudinal direction at the center are furnished to the tubular pocket 4 ₁ of the outer cylinder 4 4 ₂ is formed, opposite the flange portion is detachably fixed in 10 boss 10 ₃ formed on _one and the engaging portion of the boss hole _104, a mounting hole 9 volt is further provided in the flange portions 10 ₁ tightening tighten linked to the outer tube 4 through fitting the urging piece 11 _1, moves by fitting the inner cylinder 4 ₂ into the cylindrical pocket 4 ₁ of the outer cylinder 4 by tightening the該締with piece 11 the sealing rubber 5 Can be axially compressed. (FIGS. 10c and 11)

The cylindrical sleeve 1 is a cylindrical housing such as a cylindrical body or a rectangular cylindrical body, and can be divided into two at a longitudinally or horizontally separated joint surface. Composed of a flammable FRPP and the like, and provided with a butt joint surface that is divided into two parts, and end face plates 3 that penetrate the cables on both sides of the cable connecting portion at both ends of the case 1, and the end face plate 3 is fastened to the side wall portion The case 1 is used by being provided with a core tray (not shown) having a cable connecting portion and a core wire extra length storage portion. (Figure 3)
In this case, in the divided case in which the fitting groove of the end face plate 3 is formed at the center of the wall portion of both end faces of the cylindrical sleeve 1, the joining end face is abutted and connected, and the outer peripheral edge of the end face plate 3 Can be abutted and integrated with high density via the gasket 12. Further, the cable insertion hole 2 formed in the end face plate 3 and the insertion hole which is an entrance / exit of the underground / aerial wiring or the trunk cable are a holding piece 7 which is detachably fitted to the outer periphery of the end face plate 3. It is formed on the joint surface, and the insertion of cables and the like is easily performed from the separation surface. After the insertion, the joint surfaces are in close contact with each other so as to keep the sealing property properly.

When the cable insertion hole 2 of the end face plate 3 fitted to the cylindrical sleeve 1 is not used, a cylindrical blocking plug (not shown) is inserted and pressed to maintain the sealing property, and the cable C is inserted. The cable insertion hole 2 to be inserted / extracted is used by inserting and mounting the outer cylinder 4 having the cylindrical sealing rubber 5 and the bush 6 on the end face plate 3 together with the holding piece 7. ₁ to fix the rubber seal 5 through, from a bushing 6 to the sealing rubber 5 assembled outer tube 4 of the two-divided structure mounted in the pocket, inserting the outer cylinder 5 in the recess 5 ₁ of the end plate 3, After the holding piece 7 is temporarily fixed to the end face plate 3, the holding piece 7 may be fastened and fixed. Then attaching the seal cap 10 with a tubular 10 ₂ among which can be inserted into the pocket 4 ₁ of the outer cylinder 4 fitted in the outer cylinder 4, the axial longitudinal direction of the sealing rubber 5 clamping the clamping piece 11 of the seal cap 10 It is effective to enhance the sealing performance of the sealing portion of the cable C by axial compression.

  In the second embodiment of FIG. 14, a deformed end face plate in which four cable insertion holes 2 of the same diameter are arranged concentrically on the end face plate 3 is used, and holding pieces 7 are provided on the upper side and the lower side. An example in which the sleeve 1 is connected to be freely opened and closed by the hinge portion 16 is shown, but the cable insertion hole 2 has various cable diameters and support wire diameters, so that it corresponds to each cable.

The third embodiment of FIG. 15 shows an example in which two cable insertion holes 2 of the same diameter are provided in parallel. However, a flat sleeve is formed as a substantially gourd-shaped end face plate 3 as shown in FIG. It is easy to use in 1 and is useful for making a closure compact.
In the example of each embodiment, when the cable is inserted and the holding piece 7 is opened and the cable is sandwiched via the seal rubber, the seal member will be in close contact with the outer periphery of the cable, so that it can cope with cable jackets of different diameter types, It is elastically deformed and tightly attached to the end face plate to ensure drip-proofness and can be used in a form that improves the sealing performance of the seal part, ensuring water tightness for cable lead-in and cable storage It can be used with good sealing on the housing.
In addition, in the end surface plate of each Example, the same code | symbol as 1st Example shows the same part.

The end surface plate of the assembly state of 1st Example of this invention is shown, (a) is the front view, (b) is the side view. The perspective view of the example of FIG. 1 is shown, (a) is an oblique view from the outside, and (b) is an oblique view from the inside. It is a general view of the state which used the example of FIG. 1 for a closure, (a) is the front view, (b) is the side view. The end plate main body used by the example of FIG. 1 is shown, (a) is the front view, (b) is the side view. The perspective view of the end plate main body shown in FIG. 4 is shown, (a) is an oblique view from the outside, and (b) is an oblique view from the inside. FIG. 4 shows an assembled state of the end plate main body shown in FIG. 4, (a) is a front view of the partially separated state, (b) is a plan view of the holding piece, and (c) is a side view thereof. The outer cylinder used by the example of FIG. 1 is shown, (a) is the front view, (b) is the side view, (c) is the top view. FIG. 7 shows an expanded state of the outer cylinder in the example of FIG. 7, (a) is a plan view thereof, (b) is a front view thereof, (c) is a side view thereof, (d) is an enlarged bottom view, and (e) is an enlarged view thereof. FIG. FIG. 8A is a perspective view of the example of FIG. 7, and FIG. 8A is a perspective view that is viewed from the outside, and FIG. The cable seal part used by the example of FIG. 1 is shown, (a) is the top view, (b) is the front view, (c) is a cross-sectional view of the state which inserted the seal cap. FIG. 10 shows a seal cap used in the example of FIG. 10, (a) is an assembly plan view, (b) is a front view thereof, (c) is a front view in a separated state, and (d) is a bottom view of the upper member. It is a top view of a lower member. The gasket used by the example of FIG. 1 is shown, (a) is the top view, (b) is the front view of the partial cross section, (c) is the enlarged front view in the cc line. 1 shows a bush used in the example of FIG. 1, (a) is a plan view thereof, (b) is a front view thereof, (c) is a side view, (d) is a longitudinal sectional view taken along a line dd, (e) ) Is a longitudinal sectional view taken along line ee, and (f) is a longitudinal sectional view taken along line ff. The end surface plate of the assembly state of 2nd Example of this invention is shown, (a) is the front view, (b) is the top view of the use condition. The end surface plate of the assembly state of 3rd Example of this invention is shown, (a) is the front view, (b) is the top view of the use condition. FIG. 16 is a front view of the end face plate used in the example of FIG. 15 in a partially separated state.

Explanation of symbols

C cable
1 sleeve
2 Cable insertion hole
3 End face plate 3 ₁ recess
3 ₂ concave surface
3 ₃ Temporary fixing part
4 outer cylinder
4 ₁ pocket
4 ₂ pockets
5 Seal rubber
5 ₁ slit
6 Bush
6 ₁ butt separation surface
7 Holding pieces
7 _One rotation fulcrum
7 ₂ Temporary fixing part
8 Fastening pieces
9 Mounting hole
10 Seal cap
10 ₁ flange
10 ₂ inner cylinder
10 ₃ bosses
10 ₄ boss holes
11 Fastening pieces
12 Gasket 13 Locking part
14 Hinge part

Claims (8)

In a cable connection closure in which end face plates with cable insertion holes are detachably fitted to both end faces of a cylindrical sleeve that encloses the periphery of the cable connection portion, and is divided into two parts to be fitted into the cable insertion holes The outer cylinder is detachably attached to the end face plate, and a seal rubber having a slit in the outer cylinder and a bush made of a rubber-like elastic body having a butt separation surface are attached, and the seal rubber and the bush are connected to the cable shaft center. A holding piece that press-supports in a direction is detachably attached to the end face plate and is fastened and fixed by a fastening piece, and the seal rubber and the bush are provided by a seal cap having an inner cylinder that is housed in the outer cylinder. An end face plate in a cable connecting closure, wherein the fastening piece is axially compressed in the longitudinal direction of the shaft. The end face plate in the cable connection closure according to claim 1, wherein the end face plate includes an arc concave portion that forms a part of a cable insertion hole and a concave portion that fits the holding piece, and is attached to the concave portion. An end face plate characterized in that a gasket is detachably coated on the outer periphery of the end face plate including the holding piece so as to be attachable and detachable by a locking portion. 3. The end face plate in the cable connection closure according to claim 1, wherein the holding piece includes an arc concave surface that forms a part of the cable insertion hole, and a pair of ends formed on both side faces of the end face plate. Rotating fulcrum portions and temporary fixing portions respectively fitted to the concave surface portions project in a flange shape on both side surfaces of the holding piece, and further have a connection structure to the end face plate by the concave and convex engaging portions. End plate. The end face plate in the cable connection closure according to claim 1, 2 or 3, wherein the outer cylinder has a cylindrical pocket formed by an outer cylinder wall of a two-part structure having a division surface in a central longitudinal direction. Positioning ribs that are detachably connected by a hinge portion having a drop-off prevention function and that can be fitted to ribs formed along the circumference of the cable insertion hole of the end face plate and guided in the axial direction are provided on the outer cylinder circumferential surface. An end face plate characterized by that. The end face plate of the cable connection closure according to claim 2, wherein the gasket is made of EPDM rubber or elastomer, but is joined by being faced to each other with opposing edges as inclined faces, and a plurality of ribs are connected to the outer peripheral face of the cable shaft. In addition to being arranged side by side in the direction and having a fixing pin hole to be engaged with the concave and convex engaging portion protruding from the holding piece, it is detachably attached to the end face plate, or the end plate, characterized in that a lightening hole not penetrating the buffer zone for Resid Lumpur retention to respond to external pressure. 6. The end plate in the cable connection closure according to claim 3, 4 or 5, wherein the outer cylinder is provided with a semi-arc-shaped bush on one side thereof along the circumference of the cable insertion hole. An end face plate characterized in that it is fixed at a boss formed on the opposite surface by the mounting piece and a locking portion between the boss holes. The seal rubber provided in the outer cylinder fitted to the end face plate in the cable connection closure according to claim 4, claim 5 or claim 6 is a cylindrical body having a slit, and EPDM rubber or elastomer has a hardness of 0 An end face plate made of 40Hs. In the end plate in a cable connecting closure according to claim 6 or claim 7, before alkoxy Rukyappu is provided with a flange at one end, the outer tube in the cylindrical wall of the two-piece structure which is bisected in the longitudinal direction at the center cylindrical pocket the inner cylinder is formed to be furnished to, fastening the opposite removably fixed at the locking portion of the boss and the boss hole formed in the flange portion, the mounting hole is further provided on both flanges An end face plate characterized by axially compressing a seal rubber fitted in a cylindrical pocket of an outer cylinder by inserting a piece and tightening and connecting to the outer cylinder.

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