JPH09107622A - Cable branch joint body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable branch joint body which can be positioned in the central part of a plurality of joint spots and can be disposed on the same axis and in parallel substantially on the occasion of connection of a trunk line and a plurality of branch lines disposed in parallel substantially. SOLUTION: Conductor wires 14 of insulated wires 12 are inserted into a compression sleeve 10 so that the insulated wires 12 project from the opposite sides of the sleeve, and they are compressed so that electrical connection and fixation are ensured. Then, an insulating case 18 is put over the compression sleeve 10 and insulating coats 16 of the insulating wires 12 near the sleeve and epoxy resin 20 is placed and set in this insulating case 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cable branch connector used for connecting a plurality of branch lines to a trunk line.

[0002]

2. Description of the Related Art A conventional structure of a cable branch connector (commonly called a cluster) used for connecting a plurality of branch lines to a trunk line is a compression sleeve, which is connected to a trunk line and a plurality of branch lines from one side thereof. The conductive wires of the plurality of insulated wires are electrically connected and fixed so that the plurality of possible insulated wires protrude. The compression sleeve and the insulating coating of the insulated wire close to the compression sleeve are integrally covered with an insulator. And in the handhole etc.,
The trunk line and the plurality of branch lines, each of which has one end drawn out into the handhole, are appropriately connected to the free ends of the insulated electric wires protruding from one side of the cable branch connector.

[0003]

In the above-mentioned conventional cable branch connection body, since the insulated wire for connection projects from one side, the cable is not suitable for connection work in a narrow handhole. The branch connector could not be located at the center of the handhole, but was located at a corner or the like, and workability was inevitably poor. Also, in an underground cavern, etc., if the trunk line and multiple branch lines are arranged substantially parallel to the axial direction of the underground cavern, connecting with a conventional cable branch connector will cause the cable branch connector to Also, the position is such that it projects in a direction orthogonal to the direction in which the branch line is arranged, and a large space is required for its installation.

The present invention has been made in view of the circumstances of the conventional cable branch connecting body as described above, and it is possible to position the insulated wire for connection at the central portion of a plurality of connecting points by projecting it from opposite sides. It is also an object of the present invention to provide a cable branch connection body which can be made to have a main line and a branch line which are arranged in parallel and which can be positioned in parallel with the arrangement direction and which requires a small space for installation.

[0005]

In order to achieve the above object, the cable branch connection body of the present invention is configured such that a plurality of insulated electric wires are projected from the opposite sides of the conductive metal connection body. The conductive wire of the insulated wire is electrically connected and fixed, and the conductive metal connector and the insulating coating of the insulated wire near the conductive metal connector are integrally covered with an insulator.

A plug is electrically connected to and fixed to the conductive metal connector so that a plurality of plugs project from opposite sides of the conductive metal connector, and the conductive metal connector is removed except for the plug projecting from the first plug. Of the insulated wire is electrically connected to and fixed to a sleeve that can be inserted into and removed from the plug for electrical connection and separation, and the sleeve is inserted into the plug. The sleeve and the insulating coating of the insulated wire close to the sleeve may be covered with a second insulator.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. 1A and 1B are views showing a first embodiment of a cable branch connection body of the present invention, in which FIG. 1A is a front view, FIG. 1B is a left side view, and FIG. FIG. 3D is an enlarged view taken along line BB of FIG.

In FIG. 1, an insulated wire 12 is provided on a compression sleeve 10 as a conductive metal connector so that insulated wires 12, 12 ... For connecting to a trunk line and a plurality of branch lines protrude from opposite sides of the compression sleeve 10. , 12 ... Conductive wires 14, 14
... are inserted from both sides, compressed, and electrically connected and fixed. Then, the insulating case 18 is covered over the compression sleeve 10 and the insulating coatings 16, 16 of the insulated electric wires 12, 12 ... Close to the compression sleeve 10, and the epoxy resin 20 is filled and solidified in the insulating case 18. Therefore, the compression sleeve 10 and the insulating coatings 16, 16 ... Near the compression sleeve 10 are integrally covered with the insulating material. Furthermore, insulated wire 1
Conductive lines 14, 14 ... Are exposed at the free ends of 2, 12 ,.
The insulating caps 22, 22 ... Are appropriately covered. The insulating case 18 and the epoxy resin 20 form an insulator.

In such a structure, the conductive wires 1 of the insulated wires 12, 12 ... Are attached to the tips of the trunk line and the plurality of branch lines.
The insulating caps 22 and 22 may be removed and connected appropriately. Since the insulated wires 12, 12 ... Protrude on both sides, they can be positioned at the center of a plurality of connection points, that is, the cable branch connection body of the present invention can be positioned at the center in the handhole for work. Good nature. Further, when used for connection of an underground cavern where a trunk line and a plurality of branch lines are arranged substantially parallel to each other, the cable branch connector of the present invention is arranged substantially coaxially with the trunk line and the branch line. It can be installed and requires a small installation space.

2A and 2B are views showing a second embodiment of the cable branch connection body of the present invention. FIG. 2A is a front view, FIG. 2B is a left side view, and FIG. C sectional enlarged view, (d) is DD sectional enlarged view of (a). In FIG. 2, FIG.
The same members are designated by the same reference numerals to omit redundant description.

In the embodiment shown in FIG. 2, the insulating coatings 16, 16 ... Are partially peeled off at the intermediate portions of the plurality of insulated wires 12, 12 ... to expose the conductive wires 14, 14. The conductive wires 14, 14 ... Are clamped and fixed by a pair of connection fittings 30, 30 as conductive metal connectors by tightening screws 32, 32. Conductive wire 14 of the connection fittings 30, 30
Grooves having a semi-circular cross section, into which the conductive wires 14, 14 are inserted, are provided on the contact surface with respect to 14 ... And the conductive wire 1
The insulating case 18 is covered on the pair of connection fittings 30, 30 which sandwich and fix 4, 4, ... And the epoxy resin 20 is filled and solidified in the insulating case 18.

The second embodiment has the following effects in addition to the effects of the first embodiment. That is, since the compression sleeve 10 is not used to electrically connect the conductive wires 14, 14, ..., No compression jig is required,
There is no restriction on the shape and dimensions of the pair of connecting fittings 30, 30. Therefore, the number of insulated wires 12, 12 ... Is not limited, and the diameter of the conductive wires 14, 14 ... Of the insulated wires 12, 12 ... Further, since the plurality of insulated electric wires 12, 12 ... Are arranged in a line, the whole can be formed flat, and it is easy to support and fix the cable branch connection body in the second embodiment in the underground cavern or the like.

3A and 3B are views showing a third embodiment of the cable branch connection body of the present invention. FIG. 3A is a partially cutaway front view, FIG. 3B is a left side view, and FIG. 3C is a plug structure. FIG. 4D is a diagram showing an example of a plug structure, and FIG.

In FIG. 3, plug insertion holes 42, 42 ... Are penetratingly formed in a row in a conductive metal body 40 as a conductive metal connector. The conductive metal body 40 is entirely covered with an insulating cover 44 as a first insulator except for the openings of the plug insertion holes 42, 42 .... Further, the plug insertion holes 42, 42, ...
.. shown in (c) are press-fitted and fixed.
Before connecting to the main line and branch line, etc.
Insulation caps for plugs 48, 48 ...

At the time of connecting the trunk line and the branch line, etc., the conductive wires 52, 52 ... Are exposed by peeling off the insulating coating at the tip of the insulated wires 50, 50. Are inserted and compressed and fixed in the linear sleeves 54 with plug shown in FIG. 3 (c). The plug-equipped linear sleeves 54, 54 ... Are inserted into the receiving cups 46, 46. In addition, the insulation compound 5
, 58 are provided, the outer periphery of which is covered with synthetic rubber covers 60, 60. The insulating compound 58, 58 ... And the synthetic rubber cover 60, 60 ... Form a second insulator.

In place of the receptacles 46, 46, ..., Louver insertion plugs 70, 70 shown in FIG. 3D may be inserted and fixed in the plug insertion holes 42, 42. Then, the conductive wires 52, 52 ... Exposed at the tip ends of the insulated electric wires 50, 50 ... Which become the trunk lines and the branch lines are inserted into the linear sleeves 72, 72 ... With louvers shown in FIG. May be. And this linear sleeve with louver 7
2, 72 ... Are fitted to the louver insertion plugs 70, 70 ... And are fixed by tightening rings 74, 74. In FIG. 3D, reference numeral 76 is a louver. Furthermore, the connected louver insertion plug 70 and the louvered linear sleeve 7 are connected.
Insulation compounds 58, 58 ... Are arranged around the outer circumferences of 2, 72 ,.
Is covered with and is fastened and fixed by the bands 62, 62.

In the third embodiment, it is easy to separate the main line and the branch line from each other. Further, since the connecting portion between the plug and the sleeve is covered with the insulating compound 58, the synthetic rubber cover 60, etc., the work of winding the insulating tape or the like is unnecessary, the work efficiency is good, and the individual difference among workers is small, and the quality is high. Variation is small. Further, the plugs to which the trunk line and the branch lines are not connected are covered with plug insulating caps 48, 48, and there is no insulated wire protruding from the conductive metal connector unnecessarily.

In the first embodiment shown in FIG. 1, the conductive wires 14, 14 ... Are inserted into the compression sleeve 10 from both sides for compression connection, but the invention is not limited to this.
A groove or the like into which the conductive wires 14, 14 ... Can be inserted from the outer peripheral direction is provided in the compression sleeve 10, and a lid is provided in this groove if necessary, and the insulated wires 16 are cut at the intermediate portion without cutting the insulated wires 12, 12. , 16 ... Partially peeled off to expose the conductive wire 1
It is also possible to insert 4, 14, ... Into the grooves for compression connection. Further, in the first to third embodiments shown in FIGS. 1 to 3, the number of the insulated wires 12, 12 ... Which are electrically connected by the conductive metal connector may be two or more. The diameters of the conductive wires 14, 14 ... of 12 may be one thick for the trunk line and thin for the other branch wires, but all the conductive wires 14, 14 ... Have the same thickness. Alternatively, various different diameters may be combined. Furthermore, in the third embodiment shown in FIG. 3, the connection structure of the plug and the sleeve is not limited to the example shown in FIGS. 3 (c) and 3 (d), and may be any structure as long as the connection and separation are possible. May be. Further, in place of the insulating compound 58, 58 ... Insulating the outer periphery of the plug and the sleeve and the synthetic rubber cover 60, an insulating tape or the like may be wound.

[0019]

As described above, since the cable branch connector of the present invention is constructed, the following special effects are exhibited.

In the cable branch connection body according to the first aspect, the cable branch connection body can be positioned at the central portion of a plurality of connection points of the trunk line and the branch line, and in a narrow handhole, etc.
Good workability. Further, when the trunk line and the plurality of branch lines are arranged substantially parallel to each other, they can be arranged substantially coaxially and substantially parallel to each other, and a small installation space is sufficient.

In the cable branch connecting body according to the second aspect of the present invention, it is easy to separate the main line and the branch line from the cable branch connecting body. Therefore, it is possible to easily deal with a change in the number of branch lines. Moreover, an insulated electric wire or the like to which the trunk line or the branch line is not connected does not protrude from the conductive metal connecting body, and the whole is simple.

[Brief description of the drawings]

1A and 1B are views showing a first embodiment of a cable branch connection body of the present invention, in which FIG. 1A is a front view, FIG. 1B is a left side view,
(C) is an enlarged sectional view taken along line AA of (a), and (d) is an enlarged sectional view taken along line BB of (a).

2A and 2B are views showing a second embodiment of the cable branch connection body of the present invention, in which FIG. 2A is a front view, FIG. 2B is a left side view,
(C) is an enlarged sectional view taken along line CC of (a), and (d) is an enlarged sectional view taken along line DD of (a).

3A and 3B are views showing a third embodiment of the cable branch connection body of the present invention, in which FIG. 3A is a partially cutaway front view, FIG. 3B is a left side view, and FIG. 3C is an example of a plug structure. FIG. 3D is a diagram showing another example of the plug structure.

[Explanation of symbols]

 10 Compression sleeve 12,50 Insulated wire 14,52 Conductive wire 16 Insulation coating 18 Insulation case 20 Epoxy resin 30 Connection metal fitting 32 Screw 40 Conductive metal body 44 Insulation cover 46 Recep 54 Straight sleeve with plug 58 Insulation compound 60 Synthetic rubber cover 70 Louver Insert plug 72 Straight sleeve with louver

Claims (2)

[Claims] 1. A conductive metal connecting body is electrically connected and fixed to a conductive metal connecting body so that a plurality of insulated wires project from opposite sides of the conductive metal connecting body. A cable branch connector, wherein the insulation coating of the insulated electric wire close to the above is integrally covered with an insulator. 2. A conductive metal connector is electrically connected to and fixed to a plug so that a plurality of plugs project from opposite sides of the conductive metal connector, and the conductive metal connector except the plug projecting from the first plug. Of the insulated wire is electrically connected to and fixed to a sleeve that can be inserted into and removed from the plug for electrical connection and separation, and the sleeve is inserted into the plug. The sleeve and the insulating coating of the insulated wire close to this are second
A cable branch connector characterized in that it is covered with the above-mentioned insulator.