JPH10214522A - Splice absorbing wire and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a branch connection circuit by abolishing a splicing process or without using a joint connector. SOLUTION: Many core wires comprising conductive wires are wired in parallel, and a center part of the wires wired in parallel is focussed with an electric contact and coated by insulating coating, then the core wires mentioned above extending from both ends of a concentrated portion 20 with insulation coating are divided into required pieces. From each wire end of the divided group of the core wires branch wires coated with insulation coating are formed through an insulating tube 21, and after that, by winding an adhesive tape 22 around a border of the concentrated portion and the insulating tube tube 21, whole of core wires except for the wire ends to be connect to terminals is coated with insulation, and thereby, a cable 10 with a branch connection circuit from the beginning can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splice-absorbing electric wire and a method of manufacturing the electric wire, and more particularly, to a joint connector without using a splicing step of peeling an intermediate portion of the electric wire and connecting to another electric wire terminal. The splice absorption wire provided with the required branch circuit is provided without using the wire.

[0002]

2. Description of the Related Art In order to form a so-called splice portion which forms a branch circuit by electrically connecting core wires of an electric wire, conventionally,
Two types of techniques are used. That is, in the first method, as shown in FIGS. 7 to 9, the insulating coating 2 is peeled at the intermediate portion of the main electric wire w1 to expose the core wire 2, and the core wire 2 is exposed.
To the ends of the branch wires w2 and w3, and the core wire 2 ′ is caulked by the intermediate joint terminal 3 and crimp-connected.
A tape 4 is wrapped around the crimp connection to protect the insulation.

In a second method, as shown in FIGS. 10A and 10B, a joint bus bar 5 is housed in a joint connector 6, and the electric wire w1 'and the electric wire w
A splice is formed by inserting a terminal (not shown) connected to the terminal 2 '.

[0004]

When the splicing is performed by the first method, a step of stripping the intermediate wire of the electric wire, a step of fitting the exposed end of the core wire to the exposed portion of the stripped core wire, a step of crimping the joint terminal, Further, there is a problem that a step of winding the tape around the pressure-bonded portion is required, which requires much trouble. Further, when the splice portion is thickened as shown in FIG. 9, when the wire harness is assembled with other electric wires, the diameter of the wire harness becomes larger than the design, and the other parts interfere with the wire harness. There is fear.

[0005] When the joint connector 6 according to the second method is used, a joint connector is required, and both of the electric wires w1 'and w2' are connected to the terminal in order to connect to the joint bus bar 5 in the joint connector. It is necessary to attach these terminals in the terminal insertion chamber in the joint connector 6 and connect them to the joint bus bar 5 without fail. As described above, also in the case of using the second technique, there are problems that the number of operations is increased, necessary parts are increased, and a space is required for attaching the joint connector.

The present invention has been made in view of the above-mentioned problems, and has no splicing step according to the first method, and does not use a joint connector according to the second method. It is an object to provide a method for manufacturing an electric wire.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, there is provided a converging section in which a large number of conductors made of conductive wires are converged in an electrically contacted state and insulated. Therefore, the present invention provides a splice-absorbing electric wire characterized in that the above wire core is divided to form a branch wire whose outer periphery is covered with an insulating coating material.

As described above, in the case of forming a conventional branch circuit, in each case, a normal wire in which a core material having a plurality of wire cores is provided with an insulating coating is used, and the insulating coating of these wires is removed. Although the core material is exposed and these core materials are electrically connected via terminals to form a branch circuit, in the present invention,
As described in claim 1, an electric wire comprising a wire core necessary for forming a branch circuit is formed from the beginning, and a focusing portion for electrically contacting all the wire cores with the electric wire is provided. Since the main wire and the branch wire are divided by the required number of wires for the main wire and the branch wire for each of the required number of wires, and an insulating coating material is attached to the divided wire core group to form the main wire and the branch wire, the branch wire is initially formed. Can be provided.

As described above, since the electric wire is provided with the branch line for the branch circuit from the beginning, the intermediate wire stripping of the electric wire and the crimping of the exposed core wire by the Jont terminal, which are required in the first conventional method, are performed. The tape crimping operation of the terminal crimping portion is not required. Further, the connection by the John connector of the second method is not required.

Furthermore, since the diameter of the splice portion does not increase and the space due to the junction connector does not increase, the outer diameter of the wire harness that is assembled by assembling these electric wires is reduced from the beginning of the design. It can be designed to be appropriate, the wire harness does not interfere with other parts, and design changes can be reduced.

The convergence portion is molded with an insulating resin, and the branch line is covered with the insulating covering material made of an insulating tube passed over from a branch end. An adhesive tape is wrapped around the gap to be insulated (claim 2). A heat-shrinkable tube is suitably used as the insulating tube, and a tube is passed through each divided core group from an end, and then heated to adhere to the core group to form an insulating coating.

The present invention provides a method of manufacturing a splice-absorbing electric wire according to claim 1 and claim 2. That is, a large number of conductive wire cores are wired in parallel, and the central portion thereof is electrically contacted to be focused and insulated, and then the wires extending from both ends of the insulated covered portion are provided. Divide the required number of cores, and from each end of these divided wire core groups, pass an insulating tube,
Form a branch line covered with an insulating coating material, then wrap an adhesive tape around the boundary between the above-mentioned converging portion and the insulating tube of the branch line, and insulate and cover the entire wire core except for the terminal connected to the terminal. It is characterized by having.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIGS. 1 and 2 show a splice-absorbing wire 10 (hereinafter abbreviated as wire 10) of a first embodiment.
Main line 13 with crimp terminals 12A, 12B connected to both ends
Are provided with three circuits of branch lines 14, 15, and 16, and each terminal of these branch lines 14, 15, and 16 has a crimp terminal 12
C, 12D, and 12E are respectively connected.

The main line 13 and the branch lines 14, 15, 1
6 is formed from 100 conductive wire cores 18, the crimp terminal 12A of the main wire 13 and the crimp terminal 12C of the branch wire 14 are on the same side, and the crimp terminal 12B of the main wire 13 and the branch wires 15, 16 The crimp terminals 12D and 12E are set on opposite sides, and the above-mentioned 100 wire cores (bare wires) 18 are converged at the center in the length direction to form an insulating coating 1 made of vinyl chloride.
9 to form one electric wire 10. Therefore, the main line 13 and the branch line 1 are focused at the converging section 20 by the insulating coating 19.
4, 15, and 16 are electrically connected.

The distance from the converging section 20 to the crimp terminal 12A of the main line 13 and the crimp terminal 12C of the branch line 14 is as follows.
Each of the 100 wire cores 18 is divided into two and divided into 50 wires. In addition, the crimping terminal 12 of the main wire 13 is
B and the crimp terminal 12D of the branch line 15 are configured by 33 wire cores 18, and up to the crimp terminal 12E of the branch line 16,
It is composed of 34 wire cores 18.

Further, the crimp terminal 1 at each end from the converging section 20
Insulated heat-shrinkable tubes 21 (for example, Sumitomo Electric Industries, Ltd.) are provided at the branch portions up to the connection portions 2A to 12E.
Covered with "Sumitube". An adhesive tape 22 is wrapped between the heat-shrinkable tube 22 and both ends of the insulating coating 19 of the converging section 20 to ensure insulation of the wire core 18.

Referring to FIG. 3, the manufacturing process of the splice absorption wire 10 will be described. First, as shown in FIG. 3A, 100 wire cores 18 are wired in parallel. In addition,
At this time, when the wire diameters of the wire cores 13 are all the same and the lengths from the focusing unit 20 to the terminals connecting the crimp terminals 12A to 12E are all the same, it is not necessary to distinguish the wire cores 18.
However, if the wire diameters of the wire cores 18 constituting the main line 13 and the branch wires 14, 15, 16 are different and the required lengths to the crimp terminal connection terminals are different, it is necessary to separate for each destination at the time of division. A tag is attached to the wire core 18 for division.

Next, as shown in FIG. 3B, the central part of the wire core 18 wired in parallel is focused and covered with an insulating coating 19. The covering of the focusing section 20 with the insulating coating 19 is as follows.
The process is similar to the process of coating the wire core of an ordinary electric wire with an insulating coating, and the converging portion 20 of the wire core 18 is formed by molding with vinyl chloride.

Next, as shown in FIG. 3C, a wire core 18 is divided from both ends of the converging portion 20 into both side portions 13a, 13b and branch lines 14, 15, 16 of the main line 13, and these divided wire cores are divided. Insulated heat-shrinkable tubing 2
Cover with 1 and pass. Then, the heat-shrinkable tubes 21 are heated at a temperature at which the wire core 18 is not affected, and the heat-shrinkable tubes 21 are tightly coated on the bundles of the divided wire cores 18.

Then, as shown in FIG. 3 (D), an adhesive tape 22 is wound between both ends of the insulating coating 19 in the longitudinal direction and the heat-shrinkable chu 21 branching off from both ends to completely complete the wire core 18. Insulate coating.

Finally, the crimping terminals 12A to 12E are caulked and crimped to the wire cores 18 protruding from the end of the heat-shrinkable tube 21, respectively, and are connected, so that the structure shown in FIG. 1 is obtained.

As described above, the main line 13 and the branch lines 14, 1
Wire cores 18 necessary for constructing 5, 16 are prepared and wired in parallel from the beginning, and all the wire cores 18 are bundled and covered with an insulating coating 19 to form a single electric wire. The wire core 18 is divided into both sides of the main wire 13 and the branch wires 14, 15 and 16, and an insulating coating material made of a heat-shrinkable tube 21 is attached to the split wire core 18 to make circuit connection with the main wire 13 and the main wire 13. Branch lines 14, 15, 16
To form an integrated splice absorption electric wire 10.

FIG. 4 shows a second embodiment in which two circuits are further branched and connected to a portion 13b of the main line 13 downstream of the converging portion 20. That is, the 35 wire cores 18 are further divided into two and divided into 17 and 18 wires.

In this case, first, after the first heat-shrinkable tube 21 is put on the main line portion 13b, the wire core 18 extending from the tip of the first heat-shrinkable tube 21 is divided into approximately two parts, and these parts are divided. The second heat-shrinkable tubes 21 ′ are passed over the portions, respectively, and heated to be in close contact with the wire core 18. At the boundary between the first and second heat-shrinkable tubes, an adhesive tape 22 'is wound. In addition, crimp terminals 2F and 2G are crimped and crimped to the ends of the subdivided branch lines 17 and 18.

In the third embodiment shown in FIG. 5, the upstream side 13a connected to the power supply side of the main line 13 is composed of the entire wire core 18, while the upstream side 13a connected to the load side has a large number on the downstream side of the focusing section 20 (third embodiment). In the embodiment, the branch line may be divided into six branch lines 30.

As described above, by dividing the wire core 18 at a required position, a branch line having a required branch connection circuit can be formed.

As shown in FIG. 6, the length of the wire core 18 is set to be the same according to the length of the wire core requiring the longest dimension, and the length of the main wire 13 and the branch wires 14, 15, 16 After the division, it is preferable that each is cut to a required length. However, the wire core 8 having a predetermined length may be prepared from the beginning, and tabs that are color-coded for each destination (in units of branch lines to be divided) may be attached.

In the above embodiment, the convergence portion 20 is covered with the insulating coating 29 by a mold, and the divided wire core group extending from the convergence portion 20 is covered with the heat-shrinkable tube 21. The material is not limited, and any suitable material can be used as long as it can insulate the wire core 18.

[0030]

As is clear from the above description, in the splice-absorbing electric wire of the present invention, since the electric wire itself is provided with a branch line serving as a branch circuit, connection by a splicing process or a joint connector conventionally required. Can be eliminated. Therefore, the number of work can be reduced, and
The number of parts can be greatly reduced, and the cost can be reduced.

Further, since the diameter of the branch connection portion is not enlarged, the diameter of the wire harness for collecting and assembling the electric wires can be reduced and formed as designed. Fear is gone.

Further, since it is only necessary to divide the wire core extending from the portion where all the wire cores are brought into electrical contact and converge into a required number to form a branch line, it is easy to manufacture.

[Brief description of the drawings]

FIG. 1 is a perspective view of a splice absorption electric wire according to a first embodiment.

2A is a sectional view taken along line II of FIG. 1, and FIG. 2B is a sectional view taken along line II-II of FIG.

FIGS. 3A to 3D are schematic diagrams illustrating a manufacturing process of the electric wire according to the first embodiment.

FIG. 4 is a schematic view of a second embodiment.

FIG. 5 is a schematic view of a third embodiment.

FIG. 6 is a schematic view showing another example of the method for manufacturing the electric wire.

FIG. 7 is a perspective view showing a conventional example.

FIG. 8 is an exploded view showing the manufacturing method of FIG. 7;

FIG. 9 is a schematic diagram showing a problem of the conventional example of FIG. 7;

FIG. 10 is a schematic view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Splice absorption electric wire 12A-12G Crimp terminal 13 (13a, 13b) Main line 14, 15, 16 Branch line 19 Insulation coating 20 Focusing part 21 Heat shrink tube 22 Adhesive tape

Claims (3)

[Claims] 1. A wire core is divided from a converged portion in which a large number of wire cores made of conductive wires are condensed and electrically insulated while being in electrical contact with each other, and the outer periphery thereof is covered with an insulating coating material. A splice absorption electric wire characterized by forming a branch line. 2. The convergence portion is molded with an insulating resin, and the branch line is covered with the insulating coating material made of an insulating tube passed over from a branch end, and the convergence portion and the insulating tube are covered. The splice-absorbing electric wire according to claim 1, wherein an adhesive tape is wound around and insulated between the two. 3. A plurality of wire cores formed of conductive wires are wired in parallel, and the central portions of the parallel wires are electrically contacted to be focused and insulated and coated. A required number of the wire cores extending from both ends are divided, and a branch wire covered with an insulating coating material is formed from each end of the divided wire core group through an insulating tube. A method for producing a splice-absorbed electric wire, wherein an adhesive tape is wrapped around a boundary with an insulative tube to insulate the entire wire core except for a terminal connected to a terminal.