JP4121872B2 - Cable connection method and cable connection body - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cable connection method for connecting a cable group composed of one or a plurality of cables and another cable group composed of a plurality of cables.
[0002]
[Prior art]
For example, the undergrounding of electric wires is being studied to improve the cityscape. Accordingly, in order to distribute and collect cables, cable connection becomes an important issue, and various cable connection methods have been developed to connect one cable group consisting of one or more cables and another cable group consisting of multiple cables. Has been.
[0003]
Non-Patent Document 1 (2000, Annual Meeting of the Institute of Electrical Engineers of Japan, Power and Energy Division, 370-371) connects one cable to one side of the connection block and two cables to the other side. In addition, a cylinder-shaped insulating member whose diameter is expanded on site to cover the connection portion is disclosed. With such a structure, a connection block must be prepared according to the connection pattern, which is expensive. Moreover, since the diameter must be expanded on site, it is difficult to apply to a place where work must be performed in a harsh environment.
[0004]
On the other hand, Patent Document 1 (PCT / US98 / 18907) discloses covering with an insulating member formed of a normal temperature shrinkable tube, and can easily work even in a severe environment. However, there is no change in using the connection block, and there is a problem that it is necessary to prepare the connection block according to the connection pattern, which is expensive.
[0005]
[Patent Document 1]
PCT / US98 / 18907 [Non-Patent Document 1]
2000, The Institute of Electrical Engineers of Japan, Power and Energy Division, Proceedings, 370-371 [0006]
[Problems to be solved by the invention]
In view of the above problems, an object of the present invention is to provide a cable connection method and a cable connection body that are inexpensive and have good workability.
[0007]
[Means for Solving the Problems]
According to the invention of claim 1, a cable connection method for connecting a first cable group composed of one or a plurality of cables and a second cable group composed of a plurality of cables,
A connection terminal mounting step for attaching a connection terminal to the end of each cable;
A covering material arranging step of positioning at least one cylindrical covering member formed so as to be shrinkable at room temperature so as to surround one of the first cable group and the second cable group;
An assembly step of assembling a plurality of cables with an assembly adapter formed so as to be shrinkable at room temperature;
A connection terminal coupling step for coupling the connection terminals of the cables of the first cable group and the connection terminals of the cables of the second cable group to each other by a coupling means provided in advance;
A covering member contracting step of moving the covering member to a predetermined place to contract the covering member,
Connection terminals that are modularized has more than one type prepared, is used to select from among them,
The coupling means includes a coupling portion including a flat surface formed on each connection terminal and in contact with the other connection terminals, and a screw means for screw coupling the coupling portions of the connection terminals,
The assembly adapter is formed as a cylindrical member in which a plurality of independent longitudinally extending holes are adjacently disposed in the main body, and each of the plurality of holes shrinks covering one of the plurality of cables,
The cable connecting method is provided , wherein the covering member is formed as a cylindrical member having a through hole connecting openings provided at both ends, and shrinks to cover the collective adapter .
In such a cable connecting method, a connecting terminal selected from modularized connecting terminals is attached to the end of a cable to be connected, the connecting terminal is coupled, and a covering member that shrinks at room temperature is formed on the connecting terminal. Covered.
[0008]
In the invention of claim 2, the connection terminals can be coupled so that the outermost peripheral portion is a curved surface in a state of being coupled to each other.
In the invention of claim 3, the covering member includes an insulating member and a waterproof member disposed outside the insulating member.
And according to invention of Claim 4, the cable connection body connected by the method in any one of Claim 1 to 3 is provided.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
In this embodiment, a first cable group composed of two cables and a second cable group composed of one cable are connected. FIG. 1 is a diagram for explaining the connection between the first cable group 1 and the second cable group 2 in this embodiment.
1A shows that the first connection terminals 10 are respectively attached to the end portions of the first cables 1A and 1B of the first cable group 1, and the end of the second cable 2A of the second cable group 2 is shown. This is a step of attaching the second connection terminal 20 to the part.
[0010]
The first connection terminal 10 and the second connection terminal 20 are made of metal because they need conductivity. FIG. 2A is an enlarged perspective view of the first connection terminal 10, and the first connection terminal 10 has a cylindrical sleeve portion 11 and a coupling portion 12 for coupling. The ends of the first cables 1A and 1B from which the coating has been removed are inserted, and then the sleeve portion 11 is reduced in diameter by a caulking device (not shown) so that the end portions of the first cables 1A and 1B are firmly held by the sleeve portion 11. . A hole 13 extending in a direction perpendicular to the extending direction of the cable is formed in the connecting portion 12 so that it can be connected with a screw.
The coupling portion 12 of the first connection terminal member 10 has a shape obtained by cutting a part of a column with a plane parallel to the axis.
[0011]
FIG. 2B is an enlarged perspective view of the second connection terminal 20. The second connection terminal 20 has a cylindrical sleeve portion 21 and a coupling portion 22 for coupling. The end of the second cable 2A from which the coating has been removed is inserted, and then the sleeve portion 21 is reduced in diameter by a caulking device (not shown) so that the end of the second cable 2A is firmly held by the sleeve portion 21. A hole 23 extending in a direction perpendicular to the extending direction of the cable is formed in the connecting portion 22 so that it can be connected with a screw. The coupling portion 22 of the second connection terminal 20 has a flat thick plate shape so that the coupling portion 12 of the first connection terminal 10 can be in close contact with both sides.
[0012]
Returning to FIG. 1, referring to FIG. 1B, the collective adapter 50 is positioned so as to surround the first cables 1 </ b> A and 1 </ b> B of the first cable group, and the first insulating member 60 and the waterproof member 70 are connected to the second cable group 2. It is positioned so as to surround the cable 2A.
In other words, the first cables 1A, 1B of the first cable group 1 are passed through the holes 50A, 50B of the collective adapter 50, and the inside of the insulating member 60 and the waterproof member 70 is connected to the cable 2A of the second cable group 2. Is passed.
[0013]
Here, each of the collective adapter 50, the insulating member 60, and the waterproof member 70 is made of a resin having a large elasticity, and is formed into a cylindrical shape. It is a so-called room temperature contraction type in which the spiral holding member is broken and removed and the diameter thereof is reduced after being disposed at a predetermined position, and the cables are tightly covered.
[0014]
FIG. 3 is a view showing the structure of the collective adapter 50 before use. FIG. 3A is a view of the longitudinal axis as viewed from the direction, and FIG. 3B is a view of IIIB- in FIG. It is sectional drawing seen along the IIIB line. A cylindrical member 51 made of a resin having a large stretchability is arranged outside the spiral holding members 52A and 52B in an expanded state.
[0015]
FIG. 4 is a view showing the structure of the insulating member 60 before use, and the cylindrical main body member 61 formed of a resin having a large stretchability is arranged outside the holding member 62 in a state where the diameter is expanded. Similarly, FIG. 5 is a diagram showing the structure of the waterproof member 70 before use. The cylindrical main body member 71 formed of a resin having a large stretchability is arranged outside the holding member 72 in a state where the diameter is expanded. ing.
Note that the insulating member 60 and the waterproof member 70 are closer to the connecting portion than the waterproof member 70 because the insulating member 60 is contracted first, and must be positioned so as to be enclosed by the waterproof member. .
[0016]
1C, the spiral holding members 52A and 52B (see FIG. 3) inside the assembly adapter 50 are pulled out, and the assembly adapter 50 is connected to the first cable 1A of the first cable group 1. As a result, the relative positions of the first cables 1A and 1B of the first cable group 1 are substantially fixed to facilitate the next operation.
[0017]
Next, in FIG. 1D, the two first connection terminal members 10 attached to the ends of the first cables 1A and 1B of the first cable group 1 and the second cable 2A of the second cable group 2, respectively. The terminal member 20 for 2nd connection attached to the edge part of this is couple | bonded. FIG. 6 is a view showing the coupling of the first connection terminal member 10 and the second connection terminal member 20, which are coupled by the bolt 5 </ b> A and the nut 5 </ b> B. At this time, the head and nut of the bolt are encased in the hole (13) in the connection terminal, and in a state where the connection terminals are coupled to each other, an extraordinary convex portion is not generated on the outermost peripheral portion. Yes.
[0018]
Next, in FIG. 1E, the insulating member is moved to the position indicated by the alternate long and short dash line, and then the spiral holding member inside is removed, and the insulating member is brought into close contact with the connection portion. Next, in the same manner, after the waterproof member is moved to the position indicated by the alternate long and short dash line in FIG. 1F, the spiral holding member inside is removed, and the waterproof member is brought into close contact with the outside of the insulating member. .
[0019]
In addition, the shielding mesh for restoring the cable shielding layer of the cable cutting part is arranged in the same manner as the insulating member and the waterproof member, and before the waterproof member is brought into close contact with the insulating member, that is, 1 can be attached between (E) and (F).
[0020]
As described above, as the first embodiment, two connecting members shown in FIG. 2A and two connecting members shown in FIG. 2B are used and the two first cables 1A and 1B are used. Although the case where the second cable group 2 composed of one cable group 1 and one second cable 2A has been described, various other connections can be made.
For example, by using two connection members shown in FIG. 2A and two connection members shown in FIG. 2B, two cables and two cables can be connected as shown in FIG. FIG. 8 shows an example in which the area of the connecting portion of the connecting member in FIG. 2 (B) is doubled and four connecting members in FIG. 2 (A) are joined thereto. Thus, one cable and four cables can be connected.
[0021]
Further, by using two connecting members 30 in FIG. 2C and two connecting members 40 in FIG. 2D, two sets of two members arranged slightly apart as shown in FIG. Two cables can be connected to each other. In such a case, since the connecting portion becomes large, the insulating member and the waterproof member are enlarged accordingly.
[0022]
【The invention's effect】
The invention of claims 1 to 4 is a cable connection method for connecting a first cable group composed of one or a plurality of cables and a second cable group composed of a plurality of cables. A connecting terminal attaching step for attaching, a covering material arranging step for positioning at least one tubular covering member formed so as to be capable of shrinking at room temperature so as to surround one of the first cable group and the second cable group, A connection terminal coupling step for coupling the connection terminals of the cables of one cable group and the connection terminals of the cables of the second cable group to each other by a coupling means provided in advance; and a covering member at a predetermined place A coating member contraction step for moving the contraction member to contract, and a small number of modularized connection terminals are prepared and selected from them. To which it is to be used.
Therefore, a connecting terminal selected from modularized connecting terminals can be attached to the end of the cable to be connected, the connecting terminals are joined, and a coating member that shrinks at room temperature is coated thereon, and the intermediate block is covered. Since it is not used, it is possible to prevent an increase in the size of the connection portion, and since the connection terminal is selected from the modular connection terminals, the cost is low and it is possible to respond flexibly on site.
And according to invention of Claim 5, the cable connection body connected by the method in any one of Claim 1 to 4 is provided.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a procedure according to an embodiment of the present invention.
FIG. 2 is a diagram showing types of connection members.
FIG. 3 is a diagram illustrating the structure of a collective adapter.
FIG. 4 is a diagram illustrating a structure of an insulating member.
FIG. 5 is a diagram illustrating the structure of a waterproof member.
FIG. 6 is a diagram illustrating a coupling state of connection terminal members.
FIG. 7 is a diagram showing coupling of connection terminal members when two cables are connected to each other.
FIG. 8 is a diagram showing coupling of connection terminal members when one cable and four cables are connected.
FIG. 9 is a diagram showing coupling of connection terminal members when two slightly separated cables are connected to two slightly separated cables.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... 1st cable group 1A, 1B ... 1st cable 2 ... 2nd cable group 2A ... 2nd cable 10, 20, 30, 40 ... Connection terminal member 50 ... Collective adapter 60 ... Insulating member 70 ... Waterproofing member

Claims (4)

A cable connection method for connecting a first cable group composed of one or a plurality of cables and a second cable group composed of a plurality of cables,
A connection terminal mounting step for attaching a connection terminal to the end of each cable;
A covering material arranging step of positioning at least one cylindrical covering member formed so as to be shrinkable at room temperature so as to surround one of the first cable group and the second cable group;
An assembly step of assembling a plurality of cables with an assembly adapter formed so as to be shrinkable at room temperature;
A connection terminal coupling step for coupling the connection terminals of the cables of the first cable group and the connection terminals of the cables of the second cable group to each other by a coupling means provided in advance;
A covering member contracting step of moving the covering member to a predetermined place to contract the covering member,
Multiple types of connection terminals are available, selected from among them, and used .
The coupling means includes a coupling portion including a flat surface formed on each connection terminal and in contact with the other connection terminals, and a screw means for screw coupling the coupling portions of the connection terminals,
The assembly adapter is formed as a cylindrical member in which a plurality of independent longitudinally extending holes are adjacently disposed in the main body, and each of the plurality of holes shrinks covering one of the plurality of cables,
The cable connecting method according to claim 1, wherein the covering member is formed as a cylindrical member having a through-hole connecting openings provided at both ends, and shrinks to cover the collective adapter .   The method according to claim 1, wherein the connection terminals are configured to be coupled so that outermost peripheral portions thereof are curved surfaces when coupled to each other.   The method according to claim 1, wherein the covering member includes an insulating member and a waterproof member disposed outside the insulating member. The cable connection body connected by the method in any one of Claim 1 to 3.

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