JP2009054363A - Conductor sheet and shield harness comprising the conductor sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a conduction sheet capable of easily bending a shield harness, and a shield harness comprising the conductor sheet. <P>SOLUTION: The shield harness 1 comprises electric wires 2, a drain line 3, and the conductor sheet 4. The electric wire 2 comprises a core wire 5, and a covering part 6. The drain line 3 comprises a core wire 7. The conductor sheet 4 comprises an insulating insulation layer 8 and an insulating metal plate layer 9 laminated on the insulating insulation layer 8. A plurality of recessed parts 12 are formed on the metal plate layer 9. The shield harness 1 is constituted by winding the conductor sheet 4 around the outer periphery of the electric wires 2 and the drain line 3 and fixing both ends to each other in a state that the metal plate layer 9 is positioned inside and the insulation layer 8 is positioned outside. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a conductor sheet that is wound around the outer periphery of an electric wire and prevents noise from entering the electric wire, and a shield harness provided with the conductor sheet.

  In a car as a moving body, a wire harness is routed to supply electric power from a power source such as a battery to a mounted electronic device such as various lamps and various motors or to send a control signal from a control device. ing. The wire harness is obtained by assembling a plurality of shield harnesses.

  The shield harness includes a plurality of electric wires and a tubular braided body that passes the electric wires inside. The braided wire is formed by knitting a strand made of metal into a cylindrical shape. The shield harness is assembled by passing an electric wire through the tubular braided body.

  Since the shield harness described above is assembled through the electric wire in the tubular braided body, it cannot be easily assembled, and the labor and man-hours required for the assembly tend to increase and the cost tends to increase.

In order to solve this type of problem, the applicant of the present invention wraps a conductor sheet including an insulating insulating layer and a metal plate layer laminated on the insulating layer around the outer periphery of a plurality of electric wires. The shield harness assembled by this is proposed (for example, refer patent document 1).
JP 2002-343156 A

  In the conductor sheet of the shield harness shown in Patent Document 1 described above, the insulating layer is made of an insulating synthetic resin such as polyethylene terephthalate, and the metal plate layer is formed in a flat plate shape. For this reason, it is difficult to bend the conductor sheet, and it is difficult to bend the plurality of electric wires themselves when they are wound around the outer periphery of the plurality of electric wires. Therefore, it tends to be difficult to route on a predetermined route when routing to a car.

  Therefore, the objective of this invention is providing the conductor harness which can make a shield harness easy to bend, and the shield harness provided with this conductor sheet.

  In order to solve the above problems and achieve the object, the conductor sheet of the present invention according to claim 1, an insulating insulating layer, a conductive metal plate layer laminated on the insulating insulating layer, A conductor sheet that is wound around the outer periphery of the electric wire and prevents noise from entering the electric wire, wherein the insulating layer is made of cloth, and the metal plate layer has a constant thickness and a concave portion throughout. It is characterized in that a plurality of are arranged.

  The shield harness of the present invention according to claim 2 includes at least one electric wire and a conductor sheet wound around the outer periphery of the electric wire, and includes the conductor sheet according to claim 1 as the conductor sheet. It is characterized by.

  The shield harness according to a third aspect of the present invention is the shield harness according to the second aspect, wherein the conductor sheet includes the conductor sheet in a state where the metal plate layer is located on the inner side and the insulating layer is located on the outer side. It is characterized by having a conductive core wire which is wound around the outer periphery and at least a part of which is exposed, and a drain wire on which the conductor sheet is wound together with the electric wire.

  A shield harness according to a fourth aspect of the present invention is the shield harness according to the second or third aspect, wherein the metal plate layers are formed on both surfaces of the base material containing copper and the base material. It is characterized by having a plating layer.

  The shield harness according to a fifth aspect of the present invention is the shield harness according to any one of the second to fourth aspects, wherein both ends of the conductor sheet are overlapped with each other so that the outer periphery of the electric wire is overlapped. And both end portions are sewn together and fixed.

  According to the conductor sheet of the present invention described in claim 1, since the insulating layer is made of cloth, the rigidity of the insulating layer can be reduced, and the metal plate layer has a constant thickness and is provided with a plurality of recesses. Therefore, the metal plate layer can be easily elastically deformed.

  According to the shield harness of the present invention described in claim 2, since the insulating layer is made of cloth, the rigidity of the insulating layer can be reduced, and the metal plate layer has a constant thickness and is provided with a plurality of recesses. Therefore, the metal plate layer can be easily elastically deformed.

  According to the shield harness of the present invention described in claim 3, since the metal sheet layer is positioned on the inner side and the conductor sheet is wound around the outer periphery of the electric wire, the metal sheet layer and the drain wire are reliably electrically connected. it can.

  According to the shield harness of the present invention as set forth in claim 4, since the metal plate layer forms the plating layer on both surfaces of the base material containing copper, the metal plate layer is resistant to salt damage and sulfurous acid gas. Can be secured.

  According to the shield harness of the present invention described in claim 5, since both end portions of the conductor sheet are sewn and fixed, the conductor sheet can be easily fixed.

  As described above, according to the first aspect of the present invention, the rigidity of the insulating layer can be reduced and the metal plate layer can be easily elastically deformed, so that the conductor sheet itself can be easily bent. Therefore, when the wire is wound on the outer periphery, the wire can be easily bent.

  According to the second aspect of the present invention, since the rigidity of the insulating layer can be reduced and the metal plate layer can be easily elastically deformed, the conductor sheet itself can be easily bent. Therefore, the shield harness itself can be easily bent, and the shield harness can be easily routed along a predetermined route when routed in the automobile.

  According to the third aspect of the present invention, since the metal plate layer and the drain wire can be reliably electrically connected, it is possible to reliably prevent noise from entering the electric wire.

  The present invention according to claim 4 can ensure the salt damage of the metal plate layer and the corrosion resistance against sulfurous acid gas. Can be prevented from entering.

  According to the fifth aspect of the present invention, since both end portions of the conductor sheet are sewn and fixed, the conductor sheet can be easily fixed and easily assembled.

  Hereinafter, a conductor sheet and a shield harness according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4. As illustrated in FIG. 1, the shield harness 1 includes a plurality of electric wires 2, drain wires 3, and a conductor sheet 4.

  As shown in FIG. 1, the plurality of electric wires 2 are bundled in parallel (that is, in parallel). In the illustrated example, three electric wires 2 are provided. Each of the electric wires 2 is a so-called covered electric wire provided with a core wire 5 and a covering portion 6 that covers the core wire 5.

  The core wire 5 is formed by twisting one strand or a plurality of electric wires, and has a circular cross-sectional shape. The strand which comprises the core wire 5 is comprised with the metal which has electroconductivity. The core wire 5 has flexibility. The covering portion 6 is made of a synthetic resin having insulating properties and flexibility. A terminal fitting (not shown) attached to a connector housing or an electric connection box is attached to the end of the electric wire 2.

  The drain wire 3 is a so-called bare electric wire composed only of the conductive core wire 7. Similarly to the core wire 5 of the electric wire 2, the core wire 7 of the drain wire 3 is also composed of one or a plurality of strands. The terminal of the drain line 3 is grounded. The drain wire 3 is bundled together with the plurality of electric wires 2 and arranged on the outer periphery of the bundle formed by bundling these wires.

  As shown in FIG. 3, the conductor sheet 4 includes a thin insulating layer 8 and a thin metal plate layer 9 laminated on the insulating layer 8 and is formed in a relatively thin sheet shape. The conductor sheet 4 is formed in a rectangular planar shape.

  The insulating layer 8 is made of a cloth such as a nonwoven fabric or a woven cloth, and is formed in a sheet shape.

  As shown in FIG. 4, the metal plate layer 9 includes a flat base material 10 and a plating layer 11 formed on both surfaces of the base material 10. The base material 10 is made of copper or a copper alloy. That is, the base material 10 contains copper. The plating layer 11 is a so-called tin plating containing tin. The plating layer 11 protects the base material 10 by preventing the base material 10 from being corroded.

  Further, the metal plate layer 9 is subjected to press work such as embossing, and as shown in FIGS. 2 and 3, a plurality of recesses 12 are integrally formed while the thickness thereof is kept constant. These recesses 12 are arranged in a substantially lattice pattern in the illustrated example.

  The conductor sheet 4 is configured by bonding an insulating layer 8 and a metal plate layer 9 together with an adhesive (not shown). Of course, there is no gap between the insulating layer 8 and the metal plate layer 9, and they are bonded together in a close contact state.

  The shield harness 1 is a conductor in which a plurality of electric wires 2 and terminal wires (not shown) attached to a terminal are bundled, a metal plate layer 9 is located, and an insulating layer 8 is located outside. The sheet 4 is wound around the outer circumferences of the plurality of electric wires 2 and drain wires 3 in a rolled sushi shape. Furthermore, the shield harness 1 has both ends of the conductor sheet 4 in the width direction overlapped with each other, and these both ends are sewn and fixed with a thread or the like.

  Then, since a plurality of recesses are formed in the metal plate layer 9 of the conductor sheet 4 by embossing or the like, the drain wire 3 and the recess 12 are in close contact, and the drain wire 3 and the metal plate layer 9 are electrically connected. Connect.

  And the shield harness 1 is assembled | attached with the other sub harness etc. which comprise a wire harness, is assembled as a wire harness, and is wired by the motor vehicle etc. The shield harness 1 generates electrical noise that tends to enter the plurality of wires 2 from the outside and electrical noise that is about to be emitted to the outside from the plurality of wires 2. Grounding through the drain wire 3 prevents the noise from entering the plurality of electric wires 2.

  According to the conductor sheet 4 of this embodiment, since the insulating layer 8 is made of cloth, the rigidity of the insulating layer 8 can be reduced, and the metal plate layer 9 has a constant thickness and is provided with a plurality of recesses 12. Therefore, the metal plate layer 9 is easily expanded and contracted, that is, easily elastically deformed. Therefore, the conductor sheet 4 itself can be easily bent. Therefore, when the wire 2 is wound around the outer periphery, the wire 2 can be easily bent.

  Moreover, according to the shield harness 1 of this embodiment, since the insulating layer 8 is made of cloth, the rigidity of the insulating layer 8 can be reduced, and the metal plate layer 9 has a constant thickness and a plurality of recesses 12 are provided. Since it comprises, the said metal plate layer 9 is made easy to elastically deform. Therefore, the shield harness 1 itself can be easily bent, and the shield harness 1 can be reliably routed easily along a predetermined route when being routed in an automobile.

  Further, since the metal sheet layer 9 is positioned on the inner side and the conductor sheet 4 is wound around the outer periphery of the electric wire 2, the metal sheet layer 9 and the drain wire 3 can be reliably electrically connected. Therefore, it is possible to reliably prevent noise from entering the electric wire 2.

  Since the metal plate layer 9 forms the plating layer 11 on both surfaces of the base material 10 containing copper, the corrosion resistance against salt damage and sulfurous acid gas of the metal plate layer 9 can be ensured. Therefore, even if it is routed in an automobile, the metal plate layer 9 can prevent noise from entering the electric wire 2 over a long period of time.

  Since both ends of the conductor sheet 4 are sewn and fixed, the conductor sheet 4 can be easily fixed. Therefore, the conductor sheet 4 can be fixed easily and the shield harness 1 can be assembled easily.

  In the embodiment described above, the recesses 12 are arranged in a grid pattern on the metal plate layer 9 of the conductor sheet 4 by embossing. However, the present invention is not limited to this, and the projections and depressions may be arranged in any way. Of course. In the present invention, the conductor sheet 4 may be made of various metals without being limited to copper or a copper alloy, and the plating layer 11 may be various plating layers other than tin plating. Furthermore, in the present invention, the drain wire 3 may be provided with a covering portion that covers the core wire 7. In short, in the present invention, the drain wire 3 is configured so that at least a part of the core wire 7 is exposed. It ’s fine. Further, in the present invention, the shield harness 1 may be configured by winding the conductor sheet 4 around the outer periphery of at least one electric wire 2.

  Furthermore, in the above-described embodiment, a plurality of electric wires 2 having a round cross-sectional shape are bundled. However, in the present invention, a so-called flat cable such as a flexible flat circuit (FFC) or a flexible printed circuit (FPC) in which a plurality of conductors having a rectangular cross section are arranged in parallel may be used as the electric wire. Of course it is good.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

It is a perspective view showing a shield harness concerning one embodiment of the present invention. It is a top view which shows a part of conductor sheet of the shield harness shown by FIG. It is sectional drawing along the III-III line in FIG. It is sectional drawing which expands and shows the cross section of the metal plate layer of the conductor sheet shown by FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shield harness 2 Electric wire 3 Drain wire 4 Conductor sheet 7 Core wire 8 Insulating layer 9 Metal plate layer 10 Base material 11 Plated layer 12 Recessed part

Claims (5)

In a conductive sheet comprising an insulating insulating layer, and a conductive metal plate layer laminated on the insulating insulating layer, and wound around the outer periphery of the electric wire to prevent noise from entering the electric wire,
The insulating layer is made of cloth;
The conductor sheet is characterized in that the metal plate layer has a constant thickness throughout and is formed by arranging a plurality of recesses. Comprising at least one electric wire and a conductor sheet wound around the outer periphery of the electric wire;
A shield harness comprising the conductor sheet according to claim 1 as the conductor sheet. The conductor sheet is wound around the outer periphery of the electric wire in a state where the metal plate layer is located on the inner side and the insulating layer is located on the outer side,
The shield harness according to claim 2, further comprising: a conductive core wire that is at least partially exposed, and a drain wire around which the conductor sheet is wound together with the electric wire.   4. The shield harness according to claim 2, wherein the metal plate layer includes a base material containing copper and a plating layer formed on both surfaces of the base material.   5. The conductor sheet according to claim 2, wherein both end portions of the conductor sheet overlap each other and are wound around the outer periphery of the electric wire, and both end portions are sewn and fixed to each other. The shield harness as described in any one of them.

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