JP2002163934A - Flat type shield harness and manufacturing method of flat type shield harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flat type shield harness, which can control a jump of cost of an assembled wire harness, and can surely release noise to the outside. SOLUTION: The flat type shield harness 1 is equipped with a flat type harness 3, an ALS 2, a metal plate 9, and an electric wire 8. The flat type harness 3 is equipped with two or more core wires 10 and a covering part 11. The ALS 2 is equipped with a conductive layer 4 of electrical conductivity and an insulated layer 7 of insulating nature. As for ALS 2, ends 2a and 2b are wound overlap each other around the outer perimeter of the flat type harness 3. The metal plate 9 has conductivity and is formed in belt-shape. The metal plate 9 is arranged between the end 2a and 2b, and is fixed with both these ends 2a and 2b. The electric wire 8 is equipped with a 2nd conductive core wire 12 and 2nd covering part 13 of the insulating nature. The electric wire 8 is put on the ends 2a and 2b. The 2nd conductive core wire 12, the conductive layers 4 of both the ends 2a and 2b, and the metal plate 9, are joined by supersonic welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat shield harness having a function of shielding noise.

[0002]

2. Description of the Related Art In a vehicle as a moving body, wires are used to supply electric power from a power source such as a battery to electronic equipment such as various lamps and various motors mounted thereon and to send a control signal from a control device. Harness is routed. The wire harness includes a plurality of electric wires and the like.
For example, the flat harness 101 shown in FIGS. 9 and 10 may be used as an electric wire constituting the above-described wire harness.

The flat harness 101 illustrated in FIGS. 9 and 10 has a plurality of parallel electric wires 102, one drain wire 103, a metal film 104, a sheath 105,
It has. Each of the electric wires 102 has a conductive core wire 110 and a covering portion 11 that covers the core wire 110.
And 1. The core wire 110 has a round cross section and contains copper or a copper alloy. Covering part 111
Is made of an insulating synthetic resin. Multiple electric wires 10
2 are parallel to each other (ie, parallel). For this reason, the core wires 110 are parallel to each other.

[0004] The drain wire 103 is parallel to the plurality of electric wires 102. The drain line 103 has a round cross section and is made of a conductive metal such as copper or a copper alloy. The metal film 104 is made of a conductive metal such as copper or a copper alloy, for example, and is formed in a thin film shape. The metal film 104 covers the covering portions 111 of all the electric wires 102.
Is covered. The metal film 104 covers the covering portions 111 of all the electric wires 102 and is in contact with the drain lines 103.

The sheath 105 is made of an insulating synthetic resin, and covers the electric wire 102, the drain wire 103 and the metal film 104. In the flat harness 101, the electric wire 102 and the drain wire 103 are provided side by side, and the electric wire 102 and the drain wire 103 are covered with a sheath 105 to be formed in a belt shape.

In the flat harness 101, when external noise tries to enter the core wire 110 of each electric wire 102, the noise is transmitted to the metal film 104. And
The noise is released outside the flat harness 101 via the drain line 103. Thus, the flat harness 10
The one metal film 104 prevents external noise from entering the core wire 110 of each electric wire 102.

[0007]

When assembling the above-described wire harness using the flat harness 101 having the above-described structure, each of the electric wires 102 is composed of the core wire 110 and the covering portion 111.
And a so-called covered electric wire having
Reference numeral 3 denotes a so-called bare electric wire composed of only a core wire. Therefore, when the sheath 111 of the electric wire 102 is removed after the sheath 105 is removed, the drain wire 103 does not need to be processed. Therefore, each electric wire 102
When removing the covering portion 111 of the drain line 103,
Often bends and is no longer parallel to the core 110 of each wire 102.

Since the core wires 110 of the electric wires 102 are parallel to each other, a process such as mounting terminal fittings and inserting them into the connector housing collectively using a well-known press-contact device, crimping device, or insertion device is performed. Can be applied. However, the drain wire 103 is connected to each wire 1
Since it is not parallel to the core wire 110 of No. 02, it is difficult to connect to the terminal fitting using the above-described press-contact device, crimping device, or insertion device.

Therefore, conventionally, the drain line 10
In No. 3, an operator manually attaches the terminal fittings, or inserts the attached terminal fittings into the connector housing. As described above, in the conventional flat harness 101, the required man-hour required for assembling the wire harness increases, and the cost tends to increase.

Further, the drain line 103 and the thin metal film 104 are brought into contact with each other to release noise that is going to enter the core 110 of the electric wire 102. Therefore, the contact between the thin metal film 104 and the drain line 103 often becomes unstable. Therefore, the core wire 110 of each electric wire 102
Make sure that the flat harness 101
It is difficult to escape outside.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a flat shield harness and a flat shield harness which can reliably release noise which is likely to enter a core of an electric wire, and can suppress a rise in cost of a wire harness to be assembled. An object of the present invention is to provide a method of manufacturing a harness.

[0012]

In order to solve the above problems and achieve the object, a flat shield harness according to the present invention according to the first aspect of the present invention includes a plurality of core wires which are parallel to each other and each have a conductive property. A flat harness having a coating portion covering the core wire, a conductive thin film sheet having a thin conductor layer, a second core wire having conductivity, and a second coating portion covering the second core wire. And the conductor thin film sheet is wound around the outer periphery of the flat harness in a form in which the widthwise ends of the flat harness are overlapped, and the electric wires overlap the ends. The conductor layer of the conductor thin film sheet located at the end and the second core wire of the electric wire are joined to each other.

According to a second aspect of the present invention, there is provided the flat shield harness according to the first aspect, wherein the conductive thin film sheet has a thin insulating layer laminated on the conductive layer. The insulating layer of the conductive thin film sheet located at the overlapped end and the second coating of the electric wire are welded to each other.

According to a third aspect of the present invention, there is provided the flat shield harness according to the first or second aspect, wherein the flat shield harness is disposed between the overlapped ends and connected to these ends. A fixed metal plate is provided, and the second core wire of the electric wire, the conductor layer of the conductive thin film sheet, and the metal plate are joined to each other.

According to a fourth aspect of the present invention, there is provided the flat shield harness according to any one of the first to third aspects, wherein the conductive thin film sheet is divided into a plurality of sections. The flat harness is characterized in that ends in the width direction are overlapped with each other, and the electric wire is overlapped on one of these overlapped ends.

According to a fifth aspect of the present invention, there is provided a flat shield harness manufacturing method according to the first or second aspect, wherein the conductor layer is located inside and the flat shield harness is located inside the flat shield harness. By dressing the conductor thin film sheet around the outer periphery of the flat harness, in which the insulating layer is located on the outside and the ends are overlapped with each other, the electric wires are stacked on the ends, and ultrasonic welding is performed. The conductor layer of the conductor thin film sheet and the second core wire of the electric wire are joined to each other.

According to a sixth aspect of the present invention, there is provided the flat shield harness manufacturing method according to the third aspect, wherein the conductor layer is located inside and the insulating layer is located outside. The conductor thin film sheet is wound around the outer periphery of the flat harness, and the metal plate is attached between the ends, and the electric wires are stacked on the ends, and By performing sonic welding,
The conductor layer of the conductor thin film sheet, the second core wire of the electric wire, and the metal plate are joined to each other.

According to the flat shield harness of the present invention described in claim 1, a conductor thin film sheet is wound around the outer periphery of the flat harness, an electric wire is overlapped on the end of the conductor thin sheet, and the second core wire of the electric wire is provided. And the conductor layer of the conductor thin film sheet. For this reason, the electric wire can be used as a drain wire.

Since the second core wire and the conductor layer of the conductor thin film sheet are joined, the second core wire and the conductor layer can be reliably electrically connected. In addition, electric wires are attached to overlapping ends of the conductive thin film sheet wound around the flat harness. For this reason, it is possible to arbitrarily select the formation position of the end and the like.

According to the flat shield harness of the present invention, the insulating layer located at the end of the conductive thin film sheet and the second covering portion of the electric wire are welded to each other.
The mechanical strength at the joint between the conductor layer and the second core wire can be improved.

According to the flat shield harness of the present invention, the second core wire of the electric wire that can be used as the drain wire is attached to the conductor layer of the conductor thin film sheet and the end portion of the conductor thin film sheet. It is joined to a metal plate placed between. For this reason, the mechanical strength at the joint between the conductor layer and the second core wire can be further improved.

According to the flat shield harness of the present invention, since the second core wire and the conductor layer of the conductor thin film sheet are joined, the second core wire and the conductor layer are reliably electrically connected. Can be connected. In addition, electric wires are attached to overlapping ends of the conductive thin film sheet wound around the flat harness. For this reason, it is possible to arbitrarily select the formation position of the end and the like.

According to the method of manufacturing a flat shield harness of the present invention described in claim 5, a conductor thin film sheet is wound around the flat harness, an electric wire is overlapped on an end portion, and then ultrasonic welding is performed. Therefore, when the electric wire is attached to the conductive thin film sheet, it is not necessary to remove a part of the second covering portion of the electric wire.

Further, the conductor layer and the second
Since the core wire is joined to the conductor thin film, it is not necessary to use a separate component or the like when attaching the electric wire to the conductor thin film sheet. Therefore, it is possible to prevent the number of parts from increasing. Furthermore, since the electric wire is attached to the conductor thin film sheet by performing ultrasonic welding, by ultrasonic welding,
The insulating layer and the second coating are melted and welded to each other.

According to the method of manufacturing a flat shield harness of the present invention described in claim 6, a conductive thin film sheet is wound around the flat harness, a metal plate is fixed between the ends, and an electric wire is stacked on the ends. Thereafter, ultrasonic welding is performed. For this reason, when attaching an electric wire to a conductor thin film sheet, it is not necessary to remove a part of the second covering portion of the electric wire.

Further, the conductor layer and the second
Since the core wire and the metal plate are joined, the insulating layer and the second covering portion are melted and welded to each other by ultrasonic welding. Further, the conductor layer, the second core wire, and the metal plate are joined. For this reason, it is possible to improve the mechanical strength of the joint where the second core wire of the electric wire is joined to the conductor layer of the conductor thin film sheet.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A flat shield harness according to a first embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 3, the flat shield harness 1 includes a flat harness 3 and an aluminum laminate sheet (hereinafter, referred to as ALS) as a conductive thin film sheet.
2 and an electric wire 8.

The flat harness 3 includes a plurality of core wires 10 and a covering portion 11 that covers the core wires 10, and is formed in a belt shape. The core wire 10 is formed by twisting a plurality of conductive wires made of a conductive metal, and has a round cross section. That is, the core wire 10 is a stranded wire. The core wire 10 has flexibility. The core wire 10 contains at least copper or a copper alloy. Multiple core wires 10
Are arranged side by side as shown in FIG. These core wires 10 are parallel to each other (ie, parallel).

The cover 11 is made of a synthetic resin having an insulating property. The covering portion 11 covers all the core wires 10 in a state parallel to each other. The covering portion 11 mechanically connects the core wires 10 to form the flat harness 3 in a strip shape.
The covering portion 11 covers the core wires 10 while keeping them insulated from each other.

The ALS 2 includes a thin conductor layer 4 and the conductor layer 4.
And a thin insulating layer 7 laminated thereon. The conductor layer 4 is made of a conductive metal. The conductor layer 4 has flexibility. Conductive layer 4 contains at least aluminum or an aluminum alloy. The insulating layer 7 includes a first insulating layer 5 and a second insulating layer 6.

The first insulating layer 5 is made of an insulating synthetic resin and is laminated on the conductor layer 4. First insulating layer 5
Has flexibility and is made of, for example, polyethylene terephthalate (PET). The second insulating layer 6 is made of a synthetic resin having an insulating property and is laminated on the first insulating layer 5. The second insulating layer 6
Flexible and, for example, polyvinyl chloride (Polyvinylchl)
oride: PVC).

The electric wire 8 has a round cross section. The electric wire 8 includes a second core wire 12 having a round cross section, and a second covering portion 13 that covers the second core wire 12. The second core wire 12 is formed by twisting a plurality of conductive wires made of a conductive metal, and has a round cross section. That is, the second core wire 12 is a stranded wire. Second core wire 1
2 has flexibility. The second core wire 12 contains at least copper or a copper alloy. The second covering portion 13 is made of an insulating synthetic resin. The covering portion 13 has flexibility and is made of, for example, polyvinyl chloride (Polyvinylchlorid).
e: PVC) or the like.

The flat shield harness 1 has an ALS in which the conductor layer 4 is located inside and the insulating layer 7 is located outside.
2 is wound around the outer periphery of the flat harness 3. At this time, the ends 2a and 2b of the ALS 2 in the width direction of the flat harness 3 overlap each other. Thus, AL
S2 is wound around the outer periphery of the flat harness 3 with the ends 2a and 2b overlapping each other.

The flat shield harness 1 has a metal plate 9 made of a conductive metal. The dimensions, such as the shape, length, and width, of the metal plate 9 can be arbitrarily set.

The metal plate 9 is, as shown in FIGS. 1 and 3,
The end portions 2a, 2b are disposed between the end portions 2a, 2b.
overlaps with b. The metal plate 9 is formed by using a well-known adhesive or a double-sided tape having an adhesive surface formed on both sides.
a and 2b are fixed. In FIG. 3, an adhesive and a double-sided tape for fixing the metal plate 9 and both ends 2a and 2b are omitted.

The flat shield harness 1 includes the end 2
a, 2b and a metal plate 9 is positioned between the end portions 2a and 2b.
The wires 8 are stacked on the insulating layer 7 side of one end 2a of the end portions 2a and 2b in a state where the electric wire 8 is fixed to both the end portions 2a and 2b. In addition,
In the illustrated example, the one end 2a where the electric wire 8 overlaps is located above in FIGS. 1 and 3. Then, the end portions 2a,
The conductor layer 4, the metal plate 9, and the second core wire 12 of the electric wire 8, which are located on a portion 2 c (shown in FIGS. 2 and 3) of the wire 2 b, are joined in a state of being metal-bonded.

That is, the second core wire 12 of the electric wire 8 is
Is electrically connected to Flat shield harness 1
The conductor layer 4, the second core wire 12, and the metal plate 9 located at a part 2c of the ends 2a, 2b of the ALS 2 are welded by a well-known method such as spot welding or ultrasonic welding (also called ultrasonic welding or ultrasonic joining). Obtained fixed to each other by the method.

In the illustrated example, the ends 2a, 2a,
The conductor layer 4, the metal plate 9, and the second
The core wire 12 is joined by an ultrasonic welding machine that performs ultrasonic welding. In addition, the portion 2c indicates a joint portion between the conductor layer 4, the metal plate 9, and the second core wire 12.

As shown in FIGS. 4 and 5, the ultrasonic welding machine includes a tip (also called a tool horn) 20, an anvil 21 facing the tip 20, an oscillator (not shown), a vibrator, It has a cone and a horn. The ultrasonic welding machine sandwiches the objects to be welded to each other between the chip 20 and the anvil 21 and presses the chips 20 and the anvil 21 in a direction to approach each other.
The vibrator is vibrated by the oscillator, and this vibration is transmitted to the chip 20 via the cone and the horn. And the ultrasonic welding machine,
Ultrasonic vibration is applied to the welding object sandwiched between the tip 20 and the anvil 21 to weld the object.

When the flat shield harness 1 is manufactured, first, the ALS 2 is wound around the outer periphery of the flat harness 3 with the conductor layer 4 positioned inside and the insulating layer 7 positioned outside, and the end 2 a , 2b overlap each other. These ends 2a,
2b, a metal plate 9 is disposed between the metal plate 9 and the end portions 2a, 2b.
Both are fixed to each other using a well-known adhesive, a double-sided tape having an adhesive surface formed on both surfaces, and the like.

Then, the electric wire 8 is overlapped on the ends 2a and 2b. Thereafter, as shown in FIG. 4, between the tip 20 and the anvil 21, the end 2 where the metal plate 9 is fixed therebetween is provided.
a, 2b and the electric wire 8 superimposed on the ends 2a, 2b. At this time, the electric wire 8 is placed on the anvil 21 and the part 2c of the ends 2a and 2b is brought into contact with the chip 20.

Then, after the tip 20 and the anvil 21 are pressurized in a direction to approach each other, the vibrator is vibrated by an oscillator, and this vibration is transmitted to the tip 20 via a cone and a horn. The vibration of the oscillator is transmitted to the chip 20 while the chip 20 and the anvil 21 are pressed in a direction to approach each other.

Then, the conductor layer 4 located at the other end 2b and the metal plate 9 are metal-bonded to each other in a solid state without melting, and the metal plate 9 and the conductor layer 4 located at the one end 2a are not melted. Are bonded to each other in a solid state without melting.

The insulating layer 7 located at the ends 2a and 2b melts. Further, the above-described vibration occurs between the one end 2a and the electric wire 8, and the second covering portion 13 of the electric wire 8 is generated.
Also melts. Since the chip 20 and the anvil 21 are pressed in a direction approaching each other, when the insulating layer 7 located at the ends 2a and 2b is melted, the chip 20 and the other end 2b
The insulating layer 7 is removed from between the conductive layer 4 and the conductive layer 4.

Since the tip 20 and the anvil 21 are pressed in a direction approaching each other, when the insulating layer 7 and the second covering portion 13 located at one end 2a are melted, one end 2a Between the conductor layer 4 and the second core wire 12, the insulating layer 7 and the second covering portion 1 located at one end 2 a.
3 are removed. Then, the conductor layer 4 located at one end 2a and the second core wire 12 come into contact with each other. When they come into contact with each other, the conductor layer 4 and the second core wire 12 located at one end 2 a
Are bonded to each other in a solid state without melting.

That is, as shown in FIG. 5, the ends 2a, 2b
Each of the conductor layers 4, the metal plate 9, and the second core wire 12 are joined to each other by so-called ultrasonic welding (also called ultrasonic welding or ultrasonic joining). Further, the insulating layer 7 located at the one end 2a and the second covering portion 1 of the electric wire 8 are provided.
3 is once melted, so that the insulating layer 7 and the second covering portion 13 located at the one end 2a are welded to each other.
Then, the conductor layer 4 and the metal plate 9 at the ends 2a and 2b are respectively provided.
And the second core wire 12 are joined to each other, and the insulating layer 7 and the second covering portion 13 are welded to obtain the flat shield harness 1 having the above-described configuration.

The flat shield harness 1 thus obtained is used as an electric wire or the like constituting a wire harness. The electric wire 8 joined to the conductor layer 4 or the like is connected to a desired earth circuit or the like. Flat shield harness 1
Dissipates noise that is about to enter the core wire 10 of the flat harness 3 through the ALS 2, the conductor layer 4, and the electric wire 8 bonded to the conductor layer 4, out of the ground circuit, that is, the outside of the flat shield harness 1. Thus, the ALS 2 of the flat shield harness 1 electrically shields the core wire 10 of the flat harness 3.

The flat shield harness 1 described above
Are the conductor layer 4 located at the ends 2a and 2b and the second
The core wire 12 is joined by metal bonding. In addition, the insulating layer 7 located at the ends 2 a and 2 b and the second coating 1
3 are welded to each other. Furthermore, when assembling the flat shield harness 1 described above, the ends 2a, 2b
The ALS 2 is wound around the outer periphery of the flat harness 3 in a state in which the electric wires 8 are overlapped with each other, and the electric wires 8 are overlapped on the ends 2a and 2b to perform ultrasonic welding.

According to the present embodiment, the ALS 2 is wound around the outer periphery of the flat harness 3, the electric wire 8 is superimposed on the ends 2 a, 2 b of the ALS 2 and subjected to ultrasonic welding, and the second core wire 12 of the electric wire 8 is formed. And the conductor layer 4 are joined. And the said electric wire 8 can be used as a drain wire. For this reason, the terminal treatment of the electric wire 8 that can be used as the drain wire can be performed in the same manner as a normal covered electric wire.

For this reason, it is possible to attach a terminal fitting to the electric wire 8 by using a well-known press-contact device or crimping device, and it is not necessary to perform manual work on the electric wire 8. Therefore, when the wire harness is assembled using the flat shield harness 1, it is possible to suppress a rise in the cost of the wire harness.

The electric wires 8 are attached to the ends 2a and 2b of the conductor thin film sheet 2 wound on the flat harness 3 and overlapping each other. For this reason, it is possible to arbitrarily select the position where the ends 2a and 2b are formed, and to freely set the wiring position of the electric wire 8 that can be used as the drain wire.

The conductor layer 4 and the second core 1 are formed by ultrasonic welding.
2 are joined to each other, so that during the ultrasonic welding, the insulating layer 7 and the second covering portion 1 located at the portion 2c are bonded.
3 is melted and removed from between the second core wire 12 and the conductor layer 4. For this reason, when joining the conductor layer 4 and the second core wire 12 of the electric wire 8, the insulating layer 7 such as the portion 2 c of the ALS 2 is used.
It is not necessary to remove a part of the second covering portion 13 and the like. Therefore, the number of steps required for assembling the flat shield harness 1 can be further reduced. Therefore, the cost of the flat shield harness 1 and the wire harness including the flat shield harness 1 can be further suppressed from rising.

The conductor layer 4 and the second core 1 are formed by ultrasonic welding.
2 are joined to each other, so that when the conductor layer 4 and the second core wire 12 are joined, it is not necessary to use a separate component or the like for the ALS 2 and the flat harness 3. Therefore, an increase in the number of components of the flat shield harness 1 can be suppressed.
Therefore, it is possible to further suppress a rise in cost of the flat shield harness 1 and the wire harness including the flat shield harness 1.

The second core wire 12 of the electric wire 8 is joined to the conductor layer 4 by metal bonding. Therefore, the second core wire 12 and the conductor layer 4 can be reliably electrically connected. Therefore, the electric wire 8 can be used more reliably as a drain wire, and noise that tends to enter the core wire 10 of the flat harness 3 can be released outside through the electric wire 8.

Further, the insulating layer 7 and the second covering portion 13 located at one end 2a of the ends 2a and 2b are welded to each other. For this reason, the mechanical strength of the joint 2c between the conductor layer 4 and the second core wire 12 can be improved. Therefore, the conductor layer 4 and the second core wire 12 can be more reliably connected, and noise that tends to enter the core wire 10 of the flat harness 3 can be more reliably released to the outside via the electric wire 8.

The ALS 2 is connected to the flat harness 3 with the conductor layer 4 positioned inside and the insulating layer 7 positioned outside.
It is wrapped around. Therefore, it is possible to prevent the ALS 2, that is, the electric wire 8 used as the drain wire, from being short-circuited with another electric wire or electronic device outside the flat shield harness 1.

Further, since the electric wire 8 is formed to have a round cross section, the force for bringing the tip 20 and the anvil 21 closer to each other concentrates on the place where the ends 2a and 2b of the ALS 2 and the electric wire 8 come into contact with each other. Becomes Therefore, the melted insulating layer 7 and the second covering portion 13 form the conductor layer 4 and the second core wire 1.
2 and quickly removed. The conductor layer 4 and the second core wire 12 are securely joined. Therefore, noise that is going to enter the core wire 10 of the flat harness 3 via the electric wire 8 can be reliably released to the outside of the flat shield harness 1.

Also, these end portions 2a are located between the end portions 2a and 2b.
A metal plate 9 fixed to a and 2c is provided, and the metal plate 9 and the conductor layers 4 located at both ends 2a and 2b are joined.
For this reason, the second core wire 12 is also joined to the metal plate 9 via the conductor layer 4, and the conductor layer 4 and the second core wire 12
The mechanical strength of the joint 2c can be further improved.

Therefore, the conductor layer 4 and the second core wire 12 can be more reliably connected, and noise that tends to enter the core wire 10 of the flat harness 3 is more reliably released to the outside via the electric wire 8. be able to.

Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted. Flat shield harness 1 according to the present embodiment
As shown in FIG. 6 to FIG. 8, ALS2 as a conductive thin film sheet is divided into a plurality.

In the illustrated example, the ALS2 is divided into two parts, which are hereinafter referred to as a first ALS31 and a second ALS32.
Is shown. The ALSs 31 and 32 have the same configuration as the ALS 2 described in the first embodiment, and include the conductor layer 4 and the insulating layer 7.

The flat shield harness 1 according to the present embodiment comprises:
End portion 31 in the width direction of flat harness 3 of first ALS 31
The ALSs 31 and 32 are wound around the outer periphery of the flat harness 3 with the ALSs 31 and 32 and the ends 31a and 31b in the width direction of the flat harness 3 of the second ALS overlapping each other. Of course, the conductor layer 4 is located inside, and the insulating layer 7 is located outside. Then, the end portions 31a overlapping each other,
32a and one of the ends 31b and 32b,
Are superimposed. In the illustrated example, the electric wire 8 is superimposed on the ends 31a and 32a located on the left side in FIGS.

The end portions 31a and 32 on which the electric wires 8 are overlapped
The metal plates 9 are arranged between each other. The metal plates 9 are fixed to the ends 31a, 32 with a well-known adhesive or double-sided tape.
a is fixed to both. The ends 31b and 32b where the electric wires 8 are not overlapped are fixed to each other by a well-known adhesive or double-sided tape. FIG.
For example, the adhesive and the double-sided tape described above are omitted.

The flat shield harness 1 according to the present embodiment comprises:
By the ultrasonic welding, the conductor layer 4 located at the portion 33 of the end portion 31a, the metal plate 9, and the conductor layer 4 located at the portion 33 of the end portion 32a are metal-bonded and joined to each other. . In addition, the end 31 is formed by ultrasonic welding.
The conductor layer 4 and the second core wire 12 of the electric wire 8, which are located at the portion 33 as the joining point of a, are metal-bonded and joined to each other, and the insulating layer 7 and the second covering portion 13 are welded to each other. I have.

The flat shield harness 1 of this embodiment is also
Similarly to the first embodiment described above, the electric wire 8 is placed between the tip 20 and the anvil 21 pressed in a direction approaching each other.
And the end portions 31a and 31b are sandwiched therebetween and subjected to ultrasonic welding to be assembled.

According to the flat shield harness 1 of the present embodiment, similarly to the first embodiment, the electric wire 8 is connected to the first ALS 3
Since the first conductor layer 4 and the second ALS 32 conductor layer 4 are joined, the electric wire 8 can be used as a drain wire. For this reason, the flat shield harness 1 of the present embodiment
By assembling the wire harness using, it is possible to suppress an increase in the cost of the wire harness.

The electric wire 8 is connected to the conductor layer 4 of the first ALS 31 and the second ALS 31.
Since the conductor layer 4 of the ALS 32 is joined, noise that tends to enter the core wire 10 of the flat harness 3 can be reliably released to the outside of the flat shield harness 1.

The second welding of the electric wire 8 is performed by ultrasonic welding.
Core wire 12, conductor layer 4 of first ALS 31 and second ALS 32
And the second covering portion 13 before welding.
It is not necessary to remove a part of the insulating layer 7. Also, the number of parts can be reduced. For this reason, the required man-hours and the number of parts required for assembly can be reduced, and the cost of the flat shield harness 1 and the wire harness including the flat shield harness 1 can be prevented from rising.

Further, since the insulating layer 7 and the second covering portion 13 at the joint 33 are welded to each other, the mechanical strength of the joint 33 can be improved. Further, the conductor layer 4 and the metal plate 9 are joined to each other, and the second core 12
Are joined. For this reason, the mechanical strength of the joint 33 can be further improved. Therefore, the electric wire 8 is connected to the conductor layer 4.
This makes it possible to reliably connect the noise to the core wire 10 of the flat harness 3 and to escape the noise outside the flat shield harness 1 more reliably.

The ends 31a, 32a for attaching the electric wires 8
31b and 32b can be arbitrarily selected, and these ends 31a, 32a, 31b and 32b can be formed at arbitrary positions. For this reason, the wiring position of the electric wire 8 that can be used as the drain wire can be freely set.

In this embodiment, the ALS 2 as the conductive thin film sheet is divided into two parts. However, in the present invention, the conductive thin film sheet may be divided into three or more parts. Also in this case, the ends of the divided conductive thin film sheets are overlapped and fixed, and an electric wire is fixed to one of them by ultrasonic welding or the like. When the conductor thin film sheet is divided into three or more, the wiring position of the electric wire 8 can be set more freely.

In the first and second embodiments, the ALS 2 having the conductor layer 4 made of aluminum or an aluminum alloy is used as the conductor thin film sheet.
However, in the present invention, a conductive thin film sheet having a conductive layer made of a metal other than aluminum or an aluminum alloy, such as copper or a copper alloy, may of course be used.

Further, in the first and second embodiments, the flat harness 3 in which a plurality of core wires 10 each having a round cross section are arranged in parallel is provided.
Is used. However, in the present invention, a flexible flat cable (Flexible Flat Cable: F) in which a plurality of conductors having a rectangular cross section
FC) and Flexible Print Circuit (FlexiblePr)
Of course, a so-called flat cable such as an inted circuit (FPC) may be used.

In the first and second embodiments, the second core wire 12 of the electric wire 8 is a stranded wire. However, in the present invention, the second core wire 12 may be formed of one conductor, that is, a single wire. In this case, since the second core wire 12 is formed of a single conductive wire, the joint 2 between the second core wire 12 and the conductor layer 4 is formed.
The mechanical strength of c is further improved, and the noise can be more reliably released to the outside through the electric wire 8. In addition, it is a matter of course that the core wire 10 of the flat harness 3 may be composed of one conductor.

Further, the first and second embodiments described above show examples in which only one joint 2c, 33 between the core wire 10a and the conductor layer 4 is provided. However, according to the present invention, in order to improve the mechanical strength for fixing the core wire 10a and the conductor layer 4, the joint 2
Needless to say, a plurality of c and 33 may be provided.

[0076]

As described above, according to the first aspect of the present invention, the conductor thin film sheet is wound around the outer periphery of the flat harness, and the electric wire is overlapped on the end of the conductor thin film sheet. Since the core wire and the conductor layer of the conductor thin film sheet are joined, the electric wire can be used as a drain wire.

A terminal fitting can be attached to an electric wire that can be used as a drain wire, and can be inserted into a connector housing in the same manner as a normal covered electric wire. For this reason, it becomes possible to attach a terminal fitting to the electric wire using a known press-contact device, a crimping device, or the like, and it is not necessary to perform a manual operation or the like on the electric wire. Therefore, when a wire harness is assembled using the flat shield harness according to the present invention, a rise in the cost of the wire harness can be suppressed.

Since the second core wire and the conductor layer of the conductor thin film sheet are joined, the second core wire and the conductor layer can be reliably electrically connected. Therefore, noise that is going to enter the core wire of the flat harness can be reliably released to the outside via the conductor thin film sheet and the electric wire.

Further, electric wires are attached to the mutually overlapping ends of the conductive thin film sheet wound around the flat harness. Therefore, it is possible to arbitrarily select an end forming position and the like, and by attaching an electric wire to the end portion, it is possible to freely set a wiring position of an electric wire that can be used as a drain wire.

According to the second aspect of the present invention, since the insulating layer located at the end of the conductor thin film sheet and the second covering portion of the electric wire are welded to each other, the joint portion between the conductor layer and the second core wire is provided. Can improve the mechanical strength. Therefore,
In addition to suppressing the increase in the cost of the wire harness, the conductor layer and the second core wire can be more reliably electrically connected, and noise that tries to penetrate the core wire of the flat harness is reduced.
Through the conductor thin film sheet and the electric wire, it can be reliably released to the outside.

According to a third aspect of the present invention, there is provided a metal plate in which a second core wire of an electric wire which can be used as a drain wire is disposed between ends of the conductive thin film sheet in addition to the conductive layer of the conductive thin film sheet. Is joined to. Therefore, the conductor layer and the second
The mechanical strength of the joint with the core wire can be further improved. Therefore, in addition to suppressing an increase in the cost of the wire harness, the conductor layer and the second core wire can be more reliably electrically connected, and noise that tends to enter the core wire of the flat harness is reduced by the conductor thin film sheet and the electric wire. And can escape to the outside more reliably.

According to the fourth aspect of the present invention, since the second core wire of the electric wire is joined to the conductor layer of the conductor thin film sheet, the electric wire can be used as a drain wire. For this reason, it becomes possible to attach a terminal fitting to the electric wire by using a well-known press-contact device or the like, and it becomes unnecessary to perform a manual operation or the like on the electric wire. Therefore, it is possible to suppress an increase in cost of the wire harness including the flat shield harness according to the present invention.

Since the second core wire and the conductor layer of the conductor thin film sheet are joined, the second core wire and the conductor layer can be reliably electrically connected. Therefore, noise that is going to enter the core wire of the flat harness can be reliably released to the outside via the conductor thin film sheet and the electric wire.

Further, electric wires are attached to overlapping ends of the conductor thin film sheet wound around the flat harness. Therefore, it is possible to arbitrarily select an end forming position and the like, and by attaching an electric wire to the end portion, it is possible to freely set a wiring position of an electric wire that can be used as a drain wire.

According to the fifth aspect of the present invention, since the conductor thin film sheet is wound around the flat harness, the electric wire is superposed on the end, and then the ultrasonic welding is performed. It is not necessary to remove a part of the second covering portion. For this reason, it is possible to reliably prevent an increase in required man-hours for assembling the flat shield harness. Therefore, it is possible to reliably suppress a rise in cost of the flat shield harness and the wire harness including the flat shield harness.

Also, the conductor layer and the second
Since the core wire is joined to the conductor thin film, it is not necessary to use a separate component or the like when attaching the electric wire to the conductor thin film sheet. Therefore, it is possible to prevent the number of parts from increasing. Therefore, it is possible to reliably suppress a rise in cost of the flat shield harness and the wire harness including the flat shield harness.

Further, since the electric wire is attached to the conductor thin film sheet by performing ultrasonic welding, the conductor layer and the second core wire are securely metal-bonded. Moreover, the insulating layer and the second coating portion are melted and welded to each other by the ultrasonic welding. For this reason, the mechanical strength at the joint between the conductor layer and the second core wire can be improved. Therefore, the second core wire and the conductor layer can be reliably electrically connected to each other, and noise that tends to enter the core wire of the flat harness is reliably released to the outside via the conductor thin film sheet and the electric wire. be able to.

According to a sixth aspect of the present invention, a conductor thin film sheet is wound around a flat harness, a metal plate is fixed between the ends, an electric wire is laminated on the ends, and ultrasonic welding is performed. When attaching the electric wire to the thin film sheet, it is not necessary to remove a part of the second covering portion of the electric wire. For this reason, the required man-hours and the number of parts required for assembling the flat shield harness can be reliably prevented from increasing. Therefore, it is possible to reliably suppress a rise in cost of the flat shield harness and the wire harness including the flat shield harness.

Further, the conductor layer and the second
Since the core wire and the metal plate are joined, these conductor layers, the second core wire, and the metal plate can be reliably metal-bonded. Moreover, the insulating layer and the second coating portion are melted and welded to each other by the ultrasonic welding. For this reason, it is possible to improve the mechanical strength of the joint where the second core wire of the electric wire is joined to the conductor layer of the conductor thin film sheet.

Therefore, the second core wire and the conductor layer can be reliably electrically connected to each other, so that noise that tends to enter the core wire of the flat harness is externally transmitted through the conductor thin film sheet and the electric wire. Can be reliably released.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a flat shield harness according to a first embodiment of the present invention.

FIG. 2 is a view as seen from the direction of arrow II in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view showing a state before a second core wire of the electric wire and a conductor layer of the conductor thin film sheet are joined to each other.

FIG. 5 is a cross-sectional view showing a state after the second core wire of the electric wire and the conductor layer of the conductor thin film sheet are joined.

FIG. 6 is a perspective view showing a flat shield harness according to a second embodiment of the present invention.

FIG. 7 is a view as seen from the direction of arrow VII in FIG. 6;

FIG. 8 is a sectional view taken along the line VIII-VIII in FIG.

FIG. 9 is a plan view showing a conventional flat harness.

FIG. 10 is a sectional view taken along line XX in FIG. 9;

[Explanation of symbols]

 Reference Signs List 1 flat shield harness 2 ALS (conductor thin film sheet) 2a, 2b end 3 flat harness 4 conductor layer 7 insulating layer 8 electric wire 9 metal plate 10 core wire 11 coating portion 12 second core wire 13 second coating portion 31 first ALS ( Conductor thin film sheet) 31a, 31b end 32 Second ALS (conductor thin film sheet) 32a, 32b end

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kimio Tsuchiya 2771 Ooka, Numazu-shi, Shizuoka Prefecture Inside Arrow EMC Co., Ltd. F term (reference) 5G309 AA03 AA11 LA17 LA24 5G311 CA05 CB01 CB02 CC02 CD03 CE01 CE06 5G313 AB05 AC06 AC11 AD02 AE01 AE08

Claims (6)

[Claims] 1. A flat harness having a plurality of cores parallel to each other and having conductivity, a covering portion having an insulating property and covering the cores, and a conductor thin film sheet having a thin conductor layer. An electric wire having a conductive second core wire and a second covering portion that covers the second core wire, wherein the conductive thin film sheet is formed by overlapping the widthwise ends of the flat harness. It is wound around the outer periphery of the flat harness, the electric wire overlaps with the end, and the conductor layer of the conductor thin film sheet located at the end and the second core wire of the electric wire are joined together. A flat shield harness characterized by the following: 2. The conductive thin film sheet has a thin insulating layer laminated on the conductive layer, wherein the insulating layer of the conductive thin film sheet located at the overlapped end portion, and a second insulating layer of the electric wire. 2. The flat shield harness according to claim 1, wherein the covering portion is welded to each other. 3. A metal plate disposed between the overlapped ends and fixed to these ends, wherein the second core wire of the electric wire, the conductor layer of the conductor thin film sheet, and the metal plate are provided. The flat shield harness according to claim 1 or 2, wherein the flat shield harness is joined to each other. 4. The conductive thin film sheet is divided into a plurality of parts, and ends of the flat harness in the width direction are overlapped with each other, and the electric wire is attached to one of the overlapped ends. The flat shield harness according to any one of claims 1 to 3, wherein the flat shield harness is overlapped. 5. The conductor thin film sheet is wound around the outer periphery of the flat harness, with the conductor layer being located inside and the insulating layer being located outside and having ends overlapped with each other. 3. The flat wire according to claim 1, wherein the conductor layer of the conductor thin film sheet and the second core wire of the electric wire are joined to each other by superposing the electric wire on the portion and performing ultrasonic welding. 4. Manufacturing method of die shield harness. 6. The conductor thin film sheet is wound around the outer periphery of the flat harness, with the conductor layer being located inside and the insulating layer being located outside and having ends overlapped with each other. Attaching the metal plate between the parts, overlapping the electric wire on the end portion, and performing ultrasonic welding, thereby joining the conductor layer of the conductor thin film sheet, the second core wire of the electric wire, and the metal plate to each other. The method for manufacturing a flat shield harness according to claim 3, wherein: