JPH04195004A - Structure of tentatively reconnected part of cable - Google Patents

Abstract

PURPOSE:To improve the performance and efficiency of a waterproof hermetic treating operation by fitting and fixing two adapter rings of a U shaped section to the outer periphery of the one end face of an existing multiple optical fiber housing device. CONSTITUTION:The die parts formed by rotating the U shape of the boss parts 3, 3 of two C-shaped adapter rings 1, 1 90 deg. counterclockwise are fitted to the outer periphery of the end face plate 101 to fix the annular adapter ring constituted of the two C-shaped adapter rings 1, 1 to the outer periphery of the end face plate 101. The C-shaped ring at one end of the hermetic sheet 61 is wound around the rim part 2 of the adapter rings 1, 1 and the L shaped ring at one end of the hermetic sheet 61 is fitted to the rim part 2 of the adapter rings 1, 1. The other end is wound around the end plate mounted to a cable C1 and thereafter, female and male fasteners 65, 67 are coupled to each other. The one end of the hermetic sheet 61 is hermetically fitted and fixed to the end face plate via the adapter rings 1, 1 and the other end of the hermetic sheet 61 is directly fitted and fixed to the end plate mounted to the optical fiber cable. The resealing operation, etc., of the hermetically connected part are facilitated in this way.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a connection part for temporarily sealing a communication cable once a waterproof and airtightly treated temporary connection part is dismantled. There it is.

It is effective when used to streamline and simplify the disassembly and resealing work of the sealed joint, and to improve the durability of the sealed joint.

[Prior art and issues] Connection work for communication cables involves connecting hundreds of core wires, so it takes a long time to make one connection, so it is necessary to temporarily interrupt the work and leave it in a temporary connection state. This is often treated with a temporary waterproof and airtight treatment. In this case, it is necessary to break the temporary seal in order to resume connection work.

If the work cannot be completed after restarting, waterproofing and airtight treatment will be performed again. The fact that it takes a long time to dismantle and reseal the temporary connection significantly affects the efficiency of the cable connection work. If the material used for this temporary waterproofing and airtight treatment cannot be reused due to disassembly of the temporary joint, the cost of materials for re-waterproofing and airtighting cannot be ignored. Under these circumstances, efforts have been made to enable repeated use of materials as much as possible and to simplify temporary waterproofing and airtight treatment and disassembly of temporary connections. An example of this type is shown in FIGS. 5 and 6 (Japanese Patent Application No. 88284/1999).

The purpose of this product is to streamline and improve the efficiency of waterproof and airtight processing, and to eliminate the need for new materials for resealing, thereby reducing material costs.

First, an overview of this conventional technology (hereinafter referred to as the "base technology") will be explained with reference to FIGS. 5 and 6. have the same sign).

Cables C□, C2, C are inserted into the circular notches of the left and right end plates 11.
3, and the cable C□ and the cables C2 and C3 are respectively attached to the end plate 11.

As for the right end plate, a plug is fitted into the remaining circular notch to close it off.

Wrap the C-shaped rings at both ends of the airtight sheet 61 around both end plates 11 and 11, and wrap the C-shaped rings at both ends of the airtight sheet 61 around the end plate 1.
1. After fitting on the outer circumference of 11, female and male fasteners 65
．． Combine 67. Fold the Loe flexible sheet 63.63 into a U-shape, fill the [III] end with sealing material, place both ends around the C-shaped ring, and attach the fastener 65.67 to the C-shaped ring.
Fit it into the notch of the mold link. Thereafter, it is pressed with adhesive tape 68 and fixed to the outer periphery of the C-shaped ring. Apply a sealing material such as grease to the mating end faces of the C-shaped links to seal the abutting surfaces.

A fastening band is wrapped around the outer periphery of the C-shaped ring and tightened with a fastening fitting to fix the C-shaped link to the outer periphery of the end plate. Thereby, both end plates 11.11 are connected to each other via the airtight sheet 61. Next, the protective cover 91 is attached to the airtight sheet 6.
1 and 11 to connect the vertical fasteners 94 and 95 to fix both ends of the protective cover 91 to the ends &11.11.

Both ends of the belt 43 are crossed in a cross shape on the outer surface of the end plate 11, hooks 44 and 45 are connected, and the outer surface of the end plate 11 is pressed by the belt 43 crossed in a cross shape.

By uncoupling the hooks 44 and 45 and strongly pulling apart the fasteners 94.95.65.67 of the protective cover 91 and airtight sheet 61 to remove the fasteners 94.95.65.67, the protective force is <-91. The airtight sheet 61 is easily removed.

Furthermore, a multicore optical fiber storage device is conventionally known (Japanese Utility Model Application Publication No. 2-64902). The structure of this device is schematically shown in Figure 7. Both ends of the connector are fitted and fixed to the end plates identified at the ends of the left and right optical fiber cables, and the optical fiber connector is covered with the connector. It is something to protect.

When applying the above-mentioned prerequisite technology for fiber splicing work to an existing optical fiber multi-core line connection section, after removing the connection word of the existing optical fiber multi-core line storage device, attach both end plates of the pre-requisite technology respectively. Then, put an airtight sheet 6 on this end plate.
1. The protective cover 91 must be fitted and installed. This is because the airtight sheet 61 and protective cover 9 are the basic technologies.
This is because the size of 1 is much larger than the size of the conjunction.

The problem of the present invention is to apply the above-mentioned premise technology to an existing optical fiber multi-core storage device, and to solve the problem by using the end plate (see FIG. 7) of the optical fiber multi-core storage device.
The purpose is to make its application simple and easy.

[Means taken to solve the problem] The measures taken to solve the above problem are the following elements (a) ~
(b).

(a) Two cross-sectional opening type adapter rings were fitted and fixed to the outer periphery of one end plate of the existing optical fiber multicore storage device.

(b) One end of the airtight sheet is fitted and fixed to the adapter ring, and the other end of the airtight sheet is attached to the optical fiber cable and fitted and fixed to the removably attached end plate.

[Function] The adapter ring is a halved ring with a cross section of ``] type, and its inner diameter is equal to the outer diameter of the end plate of the optical fiber multifilament storage device, and the outer diameter is equal to the outer diameter of one end of the airtight sheet of the underlying technology. Since an adapter ring having the same inner diameter is fitted and fixed to the end plate, one end of the airtight sheet is airtightly fitted and fixed to the end plate via the adapter ring.The other end of the airtight sheet is
Like the underlying technology, it is directly fitted and fixed to the end plate attached to the optical fiber cable. The position of this end plate can be arbitrarily selected according to the length of the airtight sheet, so regardless of the distance between the end plates of the existing optical fiber multicore storage device,
A general size airtight sheet and protective cover can be used.

[Example] An example of the core adapter ring will be described with reference to FIGS. 1 and 2.

The C-shaped adapter ring 1 is made of plastic and has a rim portion 2 on the outer periphery, a boss portion 3 on the inner periphery, and reinforcing ribs 4 in the radial direction, and the cross-sectional shape of the boss portion 3 is a mouth shape.

The thickness of this die part is equal to the thickness of the end plate to be applied,
The width B of the rim portion 2 is equal to the thickness of the end plate 11 in the basic technology (see FIG. 5).

A recess 5 is provided on the outer periphery of both ends of the C-type adapter ring, and its bottom surface 5' is aligned with the center line x of the C-type adapter ring 1.
- parallel to x. Bolt holes 7 are provided at both ends 6 of the C-shaped adapter ring. The thickness of both ends t
When fixing two C-shaped adapter rings to the end plate,
It must be able to sufficiently withstand the tightening force of the tightening bolt inserted into the bolt hole 7.

In this example, the radius R□ of the inner surface of the mouth portion of the boss portion is 66 strokes, and the radius R2 of the outer surface of the rim portion is 116 mm. In this embodiment, the reason why the C-shaped adapter ring has a boss portion and a rim portion is to reduce the weight of the split ring and save material.

Next, an example of the structure of the temporary reconnection section of the present invention will be explained with reference to FIGS. 3 and 4.

Symbols in this explanation refer to patent application No. 2-8 related to the underlying technology.
Same as Figures 9 and 10 of No. 8284. this is,
This is to clarify the comparative relationship with the underlying technology.

In this example, the left end plate 10 of the left and right end plates 101, 101' of the existing optical fiber connection storage device is
1, an end plate similar to that in the base technology is attached to the right end, and the right end of the airtight sheet 61 is directly fitted and fixed to this, but this relationship is arbitrary.

Fit the mouths of the boss parts 3.3 of the two C-shaped adapter rings 1.1 onto the outer periphery of the end plate 101, insert the bolts 102 into the bolt holes at both ends of the C-shaped adapter rings, and tighten the bolts at both ends. is tightened to connect both C-shaped adapter rings and fix the ring-shaped adapter ring constituted by both C-shaped adapter rings 1.1 to the outer periphery of the end plate 101.

C of one end of the airtight sheet 61 on the rim part 2 of the adapter ring.
Wrap the mold ring around the airtight sheet 61, fit the C-shaped ring at one end of the airtight sheet 61 onto the rim part 2 of the adapter ring, wrap the other end around the end plate attached to the cable C, and fit it. Female and male fasteners 65, 67 attached to both side edges via flexible sheets 63, 63 are coupled to each other.

Fold the flexible sheet 63.63 into a U-shape, fill both ends with sealing material, overlap the two ends with the outer periphery of the C-shaped ring, and insert the fasteners 65.67 into the notched recesses of the C-shaped ring at both ends of the airtight sheet 61°. to be fitted into.

Thereafter, it is pressed with adhesive tape 68 and fixed to the outer periphery of the C-shaped ring. A sealing material such as grease is applied to the abutting end surfaces of the C-shaped rings to seal the abutting surfaces.

A tightening band 103 is wrapped around the outer periphery of the C-shaped ring and tightened with a tightening fitting to fix the C-shaped ring to the outer periphery of the adapter ring and the right end plate (not shown). Thereby, the adapter ring and the right end plate are connected to each other via the airtight sheet 61. Next, wrap the protective cover 91 around the airtight sheet 61 and attach the vertical zipper 94.9.
5, and both ends of the protective cover 91 are fixed to the adapter ring and the right end plate.

There is no difference from the above-mentioned basic technology in that the outer surface of the protective cover 91 is pressed by attaching the belt 43.

Uncouple the belt, remove the protective cover 91, and remove the airtight Seatro 1.
The protective cover 91 and the airtight sheet 61 can be easily removed by strongly pulling apart the fasteners 94.95.65.67 and removing the fasteners 94.95.65.67. When the bolts 102 are then removed, the C-shaped adapter ring 1.1 can be easily removed from the end plate 101. Since nothing is damaged by these removal operations, they can be reinstalled as is.

By preparing adapter rings of various sizes, any airtight sheet or protective cover can be attached to the end plate 101, regardless of the size of the end plate 101, the airtight sheet 61, or the protective cover 91. I can do it.

[Effect: The underlying technology of the present invention is not publicly known, therefore,
The object of the present invention is novel. Solving this novel problem and making it simple and easy to apply the underlying technology to an existing optical fiber multicore storage device is a unique effect of the present invention.

Note that it is also possible to attach adapter rings to both left and right end plates of an existing optical fiber multicore storage device, and to fit and fix both ends of the airtight sheet to both end plates, respectively. This has the advantage that both left and right end plates in the base technology can be omitted. However, in this case, the distance between the end plates and the length of the airtight sheet etc. must match.
The disadvantage is that a general-purpose item cannot be used. In contrast, the present invention has the great advantage that a general-purpose sized airtight sheet or the like can be applied to any optical fiber multicore storage device, regardless of its size.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the adapter ring of the present invention;
Fig. 2 is a side view of the same embodiment, Fig. 3 is a partially cutaway front view of an embodiment of the present invention, Fig. 4 is a sectional view taken along line XX in Fig. 3, and Fig. 5 is the premise of the present invention. FIG. 6 is a partially cutaway pressure surface view of the technology, FIG. 6 is a sectional view taken along the line XX in FIG. 5, and FIG. 7 is a partially cutaway perspective view of an example of a conventionally known optical fiber multifilament storage device. In the figure, 1...C-type adapter ring, 2...rim part,
3... Boss portion, 4... Reinforcement rib, 5... Hollow,
5'...Bottom surface, 6...End of C-type adapter ring, 7...Bolt hole, 11...End plate, 43...Belt, 44.45...Hook, 61...・Airtight sheet,
63... Flexible sheet, 65.67.94.95...
Fastener, 68... Adhesive tape, 91... Protective cover, 101.101'... End plate, 102... Bolt, C1, C2, C3... Cable, b... Boss part 3 Internal information of n-type part, B... Width of rim part 2, t...
Thickness of end 6 of C-shaped adapter ring 1. R1 is the radius of the inner surface of the mouth portion of the boss portion 3. Patent applicant: Daiichi Gigyoku Sangyo Co., Ltd. (2 others) Applicant's agent: Hiroshi Kisumi 3rd Ward X Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] Wrap both ends of an airtight sheet made of rubberized waterproof fabric around the outer periphery of the support disk, attach and removably connect both ends of the airtight sheet with vertical fasteners, cover the airtight sheet with a protective cover, and secure both ends of the protective cover. are attached and removably connected by a vertical fastener, and a two-split adapter ring with an n-shaped cross section is fitted and fixed to the outer periphery of one end plate of the existing optical fiber multicore storage device, and an airtight sheet is attached. A temporary cable reconnection structure in which one end of the airtight sheet is fitted and fixed to an adapter ring, the other end of the airtight sheet is attached to an optical fiber cable, and the other end of the airtight sheet is fitted and fixed to a removably attached end plate.