JPH11275752A - Construction of shield wiring harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the end treatment of shield wires and reduce the wastage of materials. SOLUTION: The construction of a shield wiring harness includes a plurality of shield wires 11, which respectively have twisted wires 31, drain wires 12, shield layers 14, and insulating layers 16 and dummy wires 18 to which the drain wires 12 are connected via a joint terminal 38. An end shield part 18 is formed from the end of the shield layer 14 to the joint terminal 18 of each shield wire 11. Furthermore, an end insulating part 19 is formed from the end of the insulating layer 16 for covering up to the end shield part 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shielded wire harness structure, for example, to a shielded wire harness structure that can easily perform a grounding process and can reduce a diameter.

[0002]

2. Description of the Related Art In a wire harness used for an automobile, a large number of insulated cores are bundled with an insulating tape, or a large number of insulated cores are accommodated in an insulated tube. In many cases, a shielded wire connected via a predetermined connector is used together. As shown in FIG. 3, the shield wire 30 is a twisted wire.
Shield layer 32 formed by a braided conductor covering the peripheral surface of 31
And an insulating layer 33 made of an injection resin that covers the shield layer 32. In order to connect to a predetermined connector, the following end processing is performed.

That is, as shown in FIG. 4A, a shield wire 30 is cut into a predetermined length in advance, the insulating layer 33 is removed from its end to a predetermined position, and the shield layer 32 is removed.
(See FIG. 4B), the exposed shield layer 32 is twisted and folded to expose the twisted wire 31 (see FIG. 4C). Next, the twisted shield layer 32 is covered with the insulating tape 34, and the outer cover 35 of the twisted wire 31 is partially removed to expose the conductor portion 36 (see FIG. 4D). Finally, the shield layer 32 and the ground wire 37 are connected to the metal cylindrical joint terminal 38.
(See FIG. 4E), and then the shield layer 32
The joint terminal 38 is covered by winding the insulating tape 39 from the insulating tape 34 covering the wire to the outer skin of the ground wire 37 (see FIG. 4F).

[Problems to be solved by the invention]

As shown in FIG. 5, when a plurality of shield wires 30 are used with their end positions aligned, each shield wire 30
So that the joint terminals 38 at 30 do not interfere with each other
It is necessary to make the folded length of the shield layer 32 twisted in each shield wire 30 different in advance. In other words, these shielded wires 30 are connected to the respective joint terminals with the ends of the twisted wires 31 aligned.
The length must be different in advance so that 38 does not interfere with each other (see the chain line in the figure). Therefore, when using a plurality of shielded wires 30, the longest shielded wire 30
Need to be trimmed to the same length as the shortest shielded wire 30, which wastes material and complicates end processing of each shielded wire 30.

As shown in FIG. 6, a wire harness 60 using a plurality of shield wires 30
Since each of them has the shield layer 32 and the insulating layer 33, there is also a problem that the diameter of the parallel portion 61 in which the shield wires 30 are arranged in parallel has to be increased. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and a first object of the present invention is to provide a shielded wire harness structure that can easily process an end portion of a shielded wire and reduce waste of material. A second object is to provide a shielded wire harness structure that can reduce the diameter even when a plurality of shielded wires are arranged in parallel.

[0006]

In order to achieve the above-mentioned object, the present invention provides an insulation-coated core wire, a drain wire arranged along the insulation-coated core wire, and A shield layer formed by collectively winding the insulating coated core wire and the drain wire with a conductive tape so that the longitudinal ends are exposed, and the shield layer is formed such that the longitudinal ends are exposed. A plurality of shield wires having an insulating layer formed by being wound with an insulating tape are provided, and each of the drain wires is connected to a dummy wire via a binding portion, and the end of each of the shield layers is An end shield portion is formed by winding with a conductive tape to a position covering the binding portion, and the insulating tape is formed from an end of the insulating layer to a position covering the end shield portion. It is characterized in that the end insulating portion is formed by Rimakikai. Here, as the insulated core wire, it is sufficient that the conductive main body is covered with the outer cover, and a single wire other than a so-called twisted wire may be used.

[0007] In the shielded wire harness structure configured as described above, since a drain wire is provided for each shield wire, a conventional braided conductor is twisted and then connected to the ground wire via a joint terminal. This eliminates the need for complicated end processing using other members. Further, in this shielded wire harness structure, since a plurality of joint terminals for connecting the shield portion of each shielded wire to the ground wire is not used, it is not necessary to consider mutual interference between the jointed terminals. Therefore, in this shielded wire harness structure, each shielded wire can be set to the same length in advance, thereby avoiding waste of material as in the conventional case, and performing end processing compared to the conventional case. Can be simplified. Thus, the first object described above is achieved.

Further, according to the present invention, as described in claim 2, a parallel portion in which a plurality of insulating coated core wires are arranged in parallel with each other, and a first branch portion in which each of the insulating coated core wires is branched from the parallel portion. And a second branch portion, a first drain line disposed along the parallel portion and the first branch portion,
A first shield portion formed by collectively winding the parallel portion, the first branch portion, and the first drain line with a conductive tape; and winding the first shield portion with an insulating tape. The first insulating layer formed by the above, a second drain line disposed only along the second branch portion, and the second branch portion and the second drain line are collectively wound by a conductive tape. And a second insulating layer formed by winding the second shield part with an insulating tape.

[0009] In the shielded wire harness structure thus configured, the shield portion and the insulating portion of the parallel portion in which a plurality of insulating coated core wires are arranged in parallel to each other are formed by collectively winding the conductive tape and the insulating tape. As a result, the diameter of the parallel portion can be reduced as compared with a conventional case where a plurality of shield wires each having a shield portion and an insulating portion are used. Is achieved.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention.
FIG. 2 is a structural diagram showing an embodiment, and FIG. 2 is a conceptual diagram showing a second embodiment according to the present invention. In the embodiments described below, the members and the like already described in FIGS. 3 to 6 are denoted by the same reference numerals or corresponding reference numerals in the drawings to simplify or omit the description.

As shown in FIG. 1, a wire harness structure 10 according to the first embodiment includes a plurality of shield wires 11.
As shown in FIGS. 1A and 1B, the shielded wire
Reference numeral 11 denotes a twist line, a drain line 12 arranged along the twist line 31, and the metal foil tape 13 collectively winding the twist line 31 and the drain line 12 such that the longitudinal ends are exposed. A shield layer 14 formed by
And an insulating layer 16 formed by winding the shield layer with an insulating tape 15 so that the longitudinal end is exposed.

As shown in FIG. 1C, each of the shield lines 11 is connected to the dummy line 17 via a joint terminal 38. Next, as shown in FIG. 1 (D), these shield wires 11 are collectively wound with a metal foil tape from the end of each shield layer 14 to a position covering the joint terminal 38, thereby forming an end shield portion. The end insulating portions 19 are formed by collectively winding an insulating tape from an end of each insulating layer 16 to a position covering the end shield portion 18 with an insulating tape.

[0013] Such a shielded wire harness structure
According to 10, since each of the shield wires 11 is provided with a drain wire 12, each of the conventional braided conductors is twisted and then individually connected to the dummy wires via joint terminals. No work is required, and end processing can be easily performed. Further, according to the above-described shield wire harness structure 10, the shield portion 14 of each shield wire 11 is provided.
Are not used, and it is not necessary to consider mutual interference as in the case where a plurality of joint terminals 38 are used. Therefore, according to the shielded wire harness structure 10, each shielded wire 11 can be set to the same length in advance, so that the material is not wasted unlike the related art, and the end is compared with the related art. The section processing operation can be simplified.

Next, FIG. 2 shows a shielded wire harness structure 20 according to a second embodiment of the present invention. FIG.
(A) As shown in FIG.
Is a parallel portion where a plurality of twisted wires 31 are arranged in parallel with each other
And a first branch portion 22, a second branch portion 23, and a third branch portion 24 where each twist line 31 branches from the parallel portion 21.

This shield wire harness structure 20
A first drain line 25 extends along the parallel portion 21 and the first branch portion 22.
Is arranged. The parallel portion 21, the first branch portion 22, and the first drain line 25 are collectively wound with a metal foil tape to form a first shield portion 22A, and the first shield portion 22A is formed of an insulating tape. To form the first insulating layer 22B.

The second branching section 23 includes the second branching section.
A second drain line 26 is arranged along 23. The second branch portion 23 and the second drain line 26 are collectively wound with a metal foil tape to form the second shield portion 23A, and the second shield portion 23A is formed.
The second insulating layer is formed by winding 23A with an insulating tape.
23B are formed.

Further, a third drain line 27 is arranged in the third branch portion 24 along the third branch portion 24. The third shield portion 24A is formed by collectively winding the third branch portion 24 and the fourth drain line 27 with a metal foil tape, and the third shield portion 24A is formed.
By winding 24A with an insulating tape, the third insulating layer
24B is formed.

According to the shielded wire harness structure 20 described above, the parallel portion 21 in which the plurality of shielded wires 31 are arranged in parallel forms the first shield portion 22A by winding the metal foil tape and the insulating tape together. And the first insulating part 22
Since B is formed, it is possible to obtain an effect that the diameter of the parallel portion 21 can be reduced as compared with a conventional case in which a plurality of shield wires each having a shield portion and an insulating portion are used (FIG. 2). (B)).

It should be noted that the present invention is not limited to the above-described embodiments, but can be appropriately modified and improved. Insulating core wires, drain wires, conductive tapes, shield layers, insulating tapes, The material, shape, dimensions, form, number, location, and the like of the insulating layer, the dummy wire, the binding portion, the parallel portion, the branch portion, and the like are arbitrary as long as the present invention can be achieved.

[0020]

As described above, according to the present invention, as described in claim 1, the drain lines provided on each shield line are connected to the dummy lines via the binding portions. Compared to the complicated work of twisting braided conductors and connecting to dummy wires individually via joint terminals as in the past, end processing can be performed easily and material waste occurs. Absent. Also,
According to the present invention, as described in claim 2, a parallel portion in which a plurality of shielded wires are arranged in parallel forms a first shield portion and a first insulating portion by winding a conductive tape and an insulating tape collectively. Since the portions are formed, the diameter of the parallel portion can be reduced as compared with the conventional case where a plurality of shield wires each having a shield portion and an insulating portion are used.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing a first embodiment according to the present invention.

FIGS. 2A and 2B are a conceptual diagram and a sectional view of a main part showing a second embodiment according to the present invention.

FIG. 3 is a perspective view showing a conventional shielded wire.

FIG. 4 is a schematic view showing a conventional shield wire end processing operation.

FIG. 5 is a schematic view showing a conventional problem.

FIG. 6 is a conceptual view and a sectional view of a main part of a conventional shielded wire harness.

[Explanation of symbols]

 10, 20 Shield wire harness structure 11 Shield wire (insulated core wire) 12 Drain wire 13 Metal foil tape (conductive tape) 14 Shield layer 15 Insulation tape 16 Insulation layer 17 Dummy wire 18 Edge shield layer 19 Edge insulation layer 21 Parallel part 22 First branch part (branch part) 22A First shield part 22B First insulation layer 23 Second branch part (branch part) 23A Second shield part 23B Second insulation layer 24 Third branch part (branch part) 24A Third shield part 24B Third insulating layer 25 First drain line 26 Second drain line 27 Third drain line 38 Joint terminal (bundling part)

Claims (2)

[Claims] 1. An insulated core wire, a drain wire disposed along the insulated core wire, and the insulating coated core wire and the drain wire wound together by a conductive tape such that longitudinal ends thereof are exposed. A plurality of shield wires each having a shield layer formed by turning, and an insulating layer formed by winding the shield layer with an insulating tape so that a longitudinal end thereof is exposed; Is connected to the dummy wire via the binding portion, and is wound with a conductive tape from an end of each of the shield layers to a position covering the binding portion to form an end shield portion, and A shield wire, wherein an end insulating portion is formed by winding with an insulating tape from an end of an insulating layer to a position covering the end shield portion. Harness structure. 2. A parallel portion having a plurality of insulating coated core wires,
A first branch portion and a second branch portion in which each of the insulation-coated core wires is branched from the parallel portion; a first drain line disposed along the parallel portion and the first branch portion; and the parallel portion. , A first shield portion formed by collectively winding the first branch portion and the first drain line with a conductive tape, and a first shield portion formed by winding the first shield portion with an insulating tape. The first insulating layer, the second drain line disposed only along the second branch portion, and the second branch portion and the second drain line are collectively wound by a conductive tape. A second shield portion and a second insulating layer formed by winding the second shield portion with an insulating tape.