JP6394777B2 - Electromagnetic shield member, wire harness, and method of manufacturing electromagnetic shield member - Google Patents

Description

  The present invention relates to an electromagnetic shield member that shields electromagnetic noise and a wire harness including the same.

  Conventionally, in a wire harness mounted on a vehicle such as an automobile, a tubular braided wire as shown in Patent Document 1 is often employed as a shield member that can be deformed in accordance with the deformation of an electric wire. The braided wire has a structure in which bare conductors are knitted into a cylindrical shape. The bare conductor is, for example, a plated copper wire. The shield member is formed in a cylindrical shape surrounding the periphery of the electric wire that is the target of the electromagnetic shield. Hereinafter, the electric wire to be subjected to electromagnetic shielding is referred to as a main electric wire.

  In general, when the main electric wire is wired from the opening of the metal casing into the casing, the cylindrical braided wire is covered with a cylindrical portion whose end protrudes from the opening in the metal casing. The ring is connected to the cylindrical part of the opening of the housing. In the caulking, the end of the braided wire is sandwiched and held between the tubular portion of the casing. As a result, the end of the braided wire is grounded to the housing.

  Moreover, in the example which patent document 1 shows, the edge part of a braided wire is connected to the metal shield shell member fixed to the edge of the opening in a housing | casing by caulking. The shield shell member is an independent member that can be attached to the casing and corresponds to a cylindrical portion that protrudes from the opening for introducing an electric wire in the metal casing.

  The shield shell member includes a cylindrical portion that covers the end of the braided wire and a fastening portion that is connected to the cylindrical portion and is fastened to the housing. In the shield shell shown in Patent Document 1, the cylindrical member is an example of a cylindrical portion, and the third flange portion is an example of a fastening portion.

JP 2006-344398 A

  By the way, in a shield member for a vehicle, it may be effective to employ an insulated wire (covered wire) as a shield wire instead of a bare conducting wire.

  For example, in order to achieve both the light weight of the shield member and the required specifications of the shield characteristics, the aluminum wire mainly composed of lightweight aluminum and the copper wire composed mainly of copper having excellent shielding characteristics are used as shield wires. Sometimes you want to mix. In this case, if at least the aluminum wire is covered, the different metal contact corrosion of the aluminum wire can be prevented.

  When an insulated wire is adopted as a shield wire, the insulation coating obstructs the housing grounding of the conductor (core wire) at the end of the insulated wire (shield wire). Moreover, it takes a lot of labor to strip off the insulating coating at the end of each insulated wire (shield wire) constituting the shield member.

  An object of this invention is to be able to earth | ground a housing | casing easily for the edge part of a shield strand, when an insulated wire is employ | adopted as a shield strand in a shield member.

  The electromagnetic shielding member according to the first aspect includes a plurality of covered shield strands, an end holding member, and an end fixing member. Each of the sheathed shield wires has a conductive core wire and an insulating coating formed on the outer peripheral surface of the core wire. Each of the sheathed shield wires further has plating formed on the surface of the end portion of the core wire and electrically connected to the core wire. The end holding member is a conductive member having an annular cylindrical portion that holds the plated portions of each of the plurality of covered shield strands in a state where they are arranged in an annular shape. The end fixing member is a member that fixes the plating portion of each of the covered shield strands by sandwiching them between the outer peripheral surface of the cylindrical portion in a state where they are arranged in a ring shape. The electromagnetic shield member further includes a flexible shield wire connecting portion. Three or more of the above-described covered shield strands arranged in parallel in a plane are brought into a state of being annularly arranged by being held by the cylindrical portion, and in parallel among three or more of the above-described covered shield strands arranged in parallel in a plane. When the two sheathed shield wires positioned at one end and the other end along the direction are a first sheathed shield wire and a second sheathed shield strand, respectively, An intermediate portion between both end portions of each wire is held in the cylindrical portion, and is spaced apart from the adjacent first covered shield strand and the second covered shield strand in a state of being annularly arranged. Connect with a gap.

  The electromagnetic shielding member which concerns on a 2nd aspect is an aspect of the electromagnetic shielding member which concerns on a 1st aspect. 2nd aspect WHEREIN: At least one of a convex part and a hole part is formed in the area | region where the said plating part of each said covering shield strand in the outer peripheral surface of the said cylinder part crosses.

  The electromagnetic shielding member which concerns on a 3rd aspect is one aspect | mode of the electromagnetic shielding member which concerns on any one of a 1st aspect or a 2nd aspect. The electromagnetic shield member according to the third aspect further includes a shield strand binding member. The shield wire binding member is a member that gently binds the intermediate portion of the first sheathed shield wire and the intermediate portion of the second sheathed shield wire with a space therebetween.

  The wire harness which concerns on a 4th aspect is equipped with the main electric wire used as the object of electromagnetic shielding, and the electromagnetic shielding member which concerns on each said aspect formed surrounding the circumference | surroundings of the main electric wire. In this case, the cylindrical portion of the end holding member in the electromagnetic shield member is formed in an annular shape surrounding a part of the main electric wire.

  The electromagnetic shielding member manufacturing method according to the fifth aspect includes (a) a step of preparing three or more sheathed shield wires each having a conductive core wire and an insulation coating formed on the outer peripheral surface of the core wire; b) Intermediate portions between both end portions of each of the three or more coated shield strands are connected to each other with a flexible shield strand connecting portion, and the three or more coated shield strands are interleaved. (C) forming the plating while dissolving the surrounding insulation coating on the surface of the end portion of the core wire in each of the three or more coated shield strands, and (d) the step After the step (b) and the step (c), the plated portions of each of the three or more coated shield strands are annularly arranged on the outer peripheral surface of the annular cylindrical portion of the conductive end holding member. With the end fixing member And a step of sandwiching at fixed between the outer peripheral surface of the tubular portion.

  In each of the above aspects, the covered shield strand is an insulated wire that functions as a shield strand. Further, the plating of the end portions of each of the sheathed shield wires is formed by immersing the end portions of the sheathed shield wires with the insulating coating formed thereon in a plating solution bath (plating bath). In this case, the insulating coating at the end of each of the coated shield strands is eluted from the surface of the core wire by touching the high temperature plating solution. Then, the plated portion of each of the covered shield strands is sandwiched between the conductive end holding member and the end fixing member, so that the core wire of each of the covered shield strands is connected to the end holding member via the plating. Electrically connected.

  Therefore, according to each aspect described above, the end portion of the covering shield wire can be easily connected to the cylindrical portion of the end holding member without requiring a step of previously removing the insulating coating on the end portion of the covering shield wire. As a result, the end of the sheathed shield wire can be easily grounded to the housing.

  Further, according to each of the above aspects, the plurality of covered shield strands are integrated in a comb shape by the flexible shield strand connecting portion. Therefore, it becomes easy to handle a plurality of coated shield strands when fixing each coated shield strand to the cylindrical portion.

  Moreover, according to the 2nd aspect, the top part of the convex part in the outer peripheral surface of a cylinder part, or the edge part of a hole part tends to bite into the edge part of each covering shield strand. Therefore, the plating portion of each of the coated shield strands and the cylindrical portion of the end holding member are more reliably electrically connected.

  Further, according to the third aspect, the shield wire binding member forms a large gap between the first covered shield wire not connected by the shield wire connecting portion and the adjacent second covered shield wire. It can also be prevented. Accordingly, it is possible to more reliably prevent the shielding performance from deteriorating.

It is a perspective view of the principal part of the wire harness 10 which concerns on 1st Embodiment. 2 is an exploded perspective view of a main part of the wire harness 10. FIG. It is a top view of the shield strand group which is the main components of the electromagnetic shielding member with which the wire harness 10 is provided. 2 is a cross-sectional view of a fixing structure of a sheathed shield wire in the wire harness 10. FIG. It is a figure which shows the plating formation process in the middle of manufacturing the electromagnetic shielding member with which the wire harness 10 is provided. 2 is a cross-sectional view of a fixing structure of a covered shield wire according to a first application example applicable to the wire harness 10. FIG. It is sectional drawing of the fixing structure of the covering shield strand which concerns on the 2nd application example applicable to the wire harness. It is sectional drawing of the fixing structure of the covering shield strand which concerns on the 3rd application example applicable to the wire harness. It is a perspective view of the principal part of wire harness 10A concerning a 2nd embodiment. 2 is a perspective view of a main part of an electromagnetic shield member according to an application example applicable to the wire harness 10. FIG. It is a top view of the shield strand group which concerns on the application example applicable to the wire harnesses 10 and 10A.

  Hereinafter, embodiments will be described with reference to the accompanying drawings. The following embodiment is an example embodying the present invention, and is not an example of limiting the technical scope of the present invention. An electromagnetic shield member and a wire harness including the electromagnetic shield member shown below are for vehicles such as automobiles.

<First Embodiment>
First, the wire harness 10 according to the first embodiment will be described with reference to FIGS. As shown in FIGS. 1 and 2, the wire harness 10 includes a molded resin-attached electric wire 9 including a main electric wire 81 to be subjected to electromagnetic shielding, and an electromagnetic shielding member 1.

<Electric wire with molded resin>
The molded resin-attached electric wire 9 includes a terminal-attached electric wire 80 and a resin molded portion 7. The terminal-attached electric wire 80 has a main electric wire 81 and a terminal 82 connected to the end thereof. 1 and 2 show the structure of the molded resin-attached electric wire 9 in the vicinity of one end of the main electric wire 81. The molded resin-attached electric wire 9 has a structure shown in FIGS.

  The main electric wire 81 is an insulated electric wire having, for example, a core wire 811 that is a linear conductor and an insulating coating 812 formed on the outer peripheral surface thereof. In this case, at the end portion of the main electric wire 81, the end portion of the core wire 811 extends from the end of the insulating coating 812.

  The core wire 811 of the main electric wire 81 is a metal wire material whose main component is, for example, copper or aluminum. The insulation coating 812 of the main electric wire 81 is a coating of an insulating (non-conductive) synthetic resin whose main component is, for example, polyvinyl chloride or polyethylene.

  The terminal 82 is a metal fitting connected to the end of the core wire 811 in the main electric wire 81. For example, it is conceivable that the terminal 82 is connected to the end of the core wire 811 by welding, or the terminal 82 is crimped to the end of the core wire 811. The terminal 82 is, for example, a copper alloy member such as copper or brass, or a tin alloy in which tin (Sn) plating or tin (Ag), copper (Cu), bismuth (Bi) or the like is added to tin. This is a conductive member that has been plated.

  The resin mold portion 7 is a synthetic resin member molded so as to seal the entire portion of the core wire 811 of the main wire 81 extending from the insulating coating 812 and the portion of the terminal 82 that contacts the core wire 811. The resin mold portion 7 is formed by insert molding using the region from the end portion of the insulating coating 812 to a part of the terminal 82 in the electric wire with terminal 80 as an insert portion.

  The resin mold part 7 is a molded member of an insulating synthetic resin such as polypropylene, polyethylene, polyvinyl chloride, polybutylene terephthalate, or polyamide.

  In the present embodiment, the molded resin-attached electric wire 9 includes a plurality of electric wires with terminals 80, and the resin molded portion 7 collects the ends of the main electric wires 81 in the plural electric wires with terminals 80 in a state where they are arranged in parallel. And hold. It is also conceivable that the number of main wires 81 is one.

<Electromagnetic shield member>
The electromagnetic shield member 1 includes a plurality of covered shield strands 2, an end holding member 3, and an end fixing member 4. FIG. 4 is a cross-sectional view of the fixing structure of the sheathed shield wire 2. More specifically, FIG. 4 is a longitudinal sectional view around the end of the sheathed shield wire 2 in the electromagnetic shield member 1.

  1, 2 and 4 show the structure of the electromagnetic shield member 1 in the vicinity of one end of the plurality of sheathed shield wires 2. The electromagnetic shield member 1 has a structure shown in FIGS. 1, 2 and 4 at both ends of the plurality of sheathed shield wires 2.

  As shown in FIG. 4, each of the sheathed shield wires 2 is an insulated wire having a conductive core wire 21 and an insulating coating 22 formed on the outer peripheral surface of the core wire 21. If a stranded wire in which a plurality of strands are twisted together is adopted as the core wire 21, the flexibility of the covered shield strand 2 can be enhanced. It is also conceivable that the core wire 21 is a single wire.

  For example, the sheathed shield wire 2 is an enameled wire having a linear conductor (core wire 21) and an insulating coating (enamel coating) formed by applying a resin paint on the surface of the conductor. When the covering shield wire 2 is an enameled wire, the insulating coating 22 is a coating of an insulating synthetic resin containing, for example, modified polyurethane, polyesterimide, polyamideimide or the like.

  It is also conceivable that the insulating coating 22 of the sheathed shield wire 2 is a coating formed by extrusion molding on the outside of the core wire 21. The insulating coating 22 in this case is a coating of an insulating synthetic resin whose main component is, for example, polyvinyl chloride or polyethylene.

  The core wire 21 of the sheathed shield wire 2 is a metal wire whose main component is, for example, copper or aluminum. Although it is conceivable that the core wires of all the sheathed shield wires 2 are wires of the same metal material, it is also conceivable that the electromagnetic shield member 1 includes a plurality of types of sheathed shield wires 2 each having a core wire 21 of a different material. .

  For example, in the electromagnetic shielding member 1, the sheathed shield wire 2 having the core wire 21 mainly composed of light aluminum and the sheathed shield wire 2 having the core wire 21 mainly composed of copper having excellent shielding characteristics are mixed. It is possible that The ratio of the multiple types of core wires 21 is determined in consideration of, for example, a balance between the weight reduction of the electromagnetic shielding member 1 and the shielding characteristics.

  Each of the covering shield strands 2 has a plating 200 formed on the surface of the core wire 21 at the end 20 thereof. The plating 200 is a metal film formed by dissolving the surrounding insulating coating 22 on the surface of the end of the core wire 21. The plating 200 is formed over the entire circumference of the tip surface and the end of the core wire 21. The process of forming the plating 200 will be described later.

  In the present embodiment, the plurality of covered shield strands 2 are connected in advance by a shield strand connecting portion 5 to constitute a shield strand group 2X. FIG. 3 is a plan view of the shield strand group 2X. The electromagnetic shield member 1 in this embodiment includes three or more covered shield strands 2.

  In the following description, among the three or more sheathed shield wires 2, specific two sheathed shield wires 2 that are adjacent to each other in a state of being annularly arranged by being held by the end fixing member 4 are respectively described. These are referred to as one sheathed shield wire 201 and second sheathed shield wire 202. Furthermore, all the remaining sheathed shield wires 2 are referred to as third sheathed shield wires 203.

  The shield strand connecting portion 5 is a flexible member. The shield wire connecting portion 5 has an intermediate portion between the two end portions 20 of each of the three or more sheathed shield wires 2 other than between the first sheathed shield wire 201 and the second sheathed shield wire 202. They are linked at intervals.

  That is, the shield wire connecting portion 5 connects the intermediate portions of all the third covered shield wire 203 in series with a space therebetween. Further, the shield wire connecting portion 5 connects the intermediate portion of the first covered shield wire 201 and the intermediate portion of at least one third covered shield wire 203 with an interval therebetween. Further, the shield wire connecting portion 5 connects the intermediate portion of the second covered shield wire 202 and the intermediate portion of at least one third covered shield wire 203 with a space therebetween.

  In the example shown in FIG. 5, the shield wire connecting portion 5 connects the adjacent shield shield wires 2 with an interval therebetween, but an example in which this is not the case is also conceivable. For example, it is conceivable that the shield wire connecting portion 5 connects two adjacent shield shield wires 2 together.

  The shield strand connecting portion 5 is a flexible synthetic resin member, for example. It is conceivable that the synthetic resin constituting the shield wire connecting portion 5 is, for example, an elastomer having elasticity, polyvinyl chloride, polyethylene, or the like.

  The shield strand connecting portions 5 are formed on the plurality of covered shield strands 2 before being fixed to a cylindrical portion 301 of the end holding member 3 described later. That is, at the time before the end of the shield wire group 2X is fixed to the end holding member 3, the plurality of covered shield wires 2 are integrated in a comb shape by the flexible shield wire connecting portion 5. .

  As will be described later, the portions of the plating 200 at both ends of the interdigital shield wire group 2X are arranged in a ring shape in the cylindrical portion 301 of each of the two end holding members 3 by the two end fixing members 4 respectively. Fixed.

  Even when the electromagnetic shield member 1 including the shield wire group 2X is bent and attached along the path of the main electric wire 81, the distance between the sheathed shield wires 2 is maintained substantially constant, and a plurality of sheaths The shield strands 2 are distributed substantially uniformly without being partially biased in the circumferential direction. As a result, it can be prevented that a large gap is partially formed between the covered shield strands 2 and the shielding performance is deteriorated.

  Further, since the plurality of sheathed shield wires 2 are integrated in a comb shape, handling of the plurality of sheathed shield strands 2 when joining each sheathed shield strand 2 to the end fixing member 4 is facilitated. .

  The end holding member 3 is a conductive member formed in an annular shape. In the present embodiment, the end holding member 3 is a conductive member having an annular cylindrical portion 301 and a fastening portion 302 connected to the cylindrical portion 301.

  1 and 2, the end holding member 3 is a so-called shield shell member. The end holding member 3 (shield shell member) is a member attached to the edge of the opening in the housing that houses the electrical equipment to which the main electric wire 81 is connected.

  The cylindrical portion 301 holds the plating 200 portion of each of the sheathed shield wires 2 in a state where they are arranged in a ring shape. On the other hand, the fastening portion 302 is a portion that is fastened to a metal housing (not shown) that houses a device to which the molded resin-attached electric wire 9 is connected. The fastening portion 302 is formed outside the tubular portion 301.

  A through-hole 300 that forms a passage for the main electric wire 81 is formed in the cylindrical portion 301 of the end holding member 3. The end holding member 3 is attached to the casing in a state where the through hole 300 of the cylindrical portion 301 and the opening of the casing overlap.

  In the example shown in FIGS. 1 and 2, a screw hole 303 through which a screw for fastening the end holding member 3 to the housing is passed is formed in the fastening portion 302. The end holding member 3 is a metal member whose main component is, for example, aluminum or copper. It is also considered that tin (Sn) plating or tin alloy plating in which silver (Ag), copper (Cu), bismuth (Bi) or the like is added to tin is formed on the surface of the end holding member 3. It is done.

  In the present embodiment, the resin mold portion 7 of the electric wire 9 with mold resin is fitted into the through hole 300 of the cylindrical portion 301 in the end portion holding member 3. As a result, the terminal-attached electric wire 80 penetrating the resin mold portion 7 enters the through-hole 300 of the cylindrical portion 301.

  The end fixing member 4 is a member that fixes the portion of the plating 200 in each of the sheathed shield wires 2 between the outer peripheral surface of the cylindrical portion 301 in a state where they are arranged in a ring shape. For example, the end fixing member 4 has a structure in which a metal belt-shaped member that can be bent and deformed is connected to the outer peripheral surface of the cylindrical portion 301 in the end holding member 3.

  In the present embodiment, the end fixing is such that a portion of the plating 200 of each of the covering shield strands 2 is formed in an annular shape with the outer peripheral surface of the cylindrical portion 301 in a state where the plurality of covering shield strands 2 are arranged in parallel without crossing each other. It is sandwiched between the inner peripheral surface of the member 4. The end fixing member 4 is bent in an annular shape along the outer peripheral surface of the cylindrical portion 301 of the end holding member 3 and connected to the cylindrical portion 301.

  For example, the belt-like end fixing member 4 is originally formed in an annular shape by connecting both ends in the longitudinal direction thereof by caulking. It is also conceivable that both ends of the band-shaped end fixing member 4 are connected by being folded. It is also conceivable that the end fixing member 4 is connected to the cylindrical portion 301 by caulking.

  Both end portions 20 of each of the plurality of shielded shield wires 2 are held in an annular shape by two end holding members 3 each combined with the end fixing member 4. Therefore, the plurality of sheathed shield wires 2 are held by the two end holding members 3 in a state of being arranged in a cylindrical shape surrounding the main wire 81.

  The core wire 21 of each of the sheathed shield wires 2 is in contact with the plating 200 on the surface of the end portion, and the plating 200 is in contact with the cylindrical portion 301. Accordingly, the core wire 21 of each of the plurality of covered shield strands 2 is electrically connected to the end holding member 3 through the plating 200.

  FIG. 5 is a diagram illustrating a plating formation process in the middle of manufacturing the electromagnetic shielding member 1. As shown in FIG. 5, the plating forming process is a wet plating process in which the end 20 of each of the covering shield wires 2 is immersed in the plating solution 200X. In the plating forming step, the end 20 with the insulating coating 22 formed on each of the covering shield wires 2 is immersed in the plating solution 200X accumulated in the plating tank 90.

  The temperature of the plating solution 200 </ b> X that is a molten metal, that is, the melting point of the plating 200 is higher than the melting point of the insulating coating 22 of the covering shield wire 2. Therefore, the insulating coating 22 at the end 20 of each of the coated shield strands 2 comes into contact with the high-temperature plating solution 200X and elutes from the surface of the core wire 21. Further, the core wire 21 inside the eluted insulation coating 22 is exposed to the plating solution 200X, and the plating 200 is formed on the surface of the core wire 21.

  In the example shown in FIG. 5, the plurality of covered shield strands 2 are integrated as a shield strand group 2X by the shield strand connecting portion 5 before the plating formation step. And a plating formation process is collectively performed about the edge part 20 of the some covering shield strand 2 integrated as the shield strand group 2X.

  For example, when the plating formation process is an electroplating process, the end 20 of each of the covering shield strands 22 as the cathode electrode and an anode electrode (not shown) are immersed in the plating solution 200X. In this case, a voltage is applied to each shield wire 22 and an anode electrode (not shown). It is also considered that the plating 200 is formed by an electroless plating method.

<Effect>
In the electromagnetic shielding member 1, the plurality of covered shield strands 2 are insulated wires that function as shield strands. Further, the plating 200 of each of the sheathed shield wires 2 is formed by immersing the end portion 20 of each of the sheathed shield wires 2 with the insulating coating 22 formed thereon in a bath (plating bath 90) of the plating solution 200X. Is done. In the plating forming step, the insulating coating 22 at the end 20 of each of the coated shield strands 2 comes into contact with the hot plating solution 200X and elutes from the surface of the core wire 21.

  Then, the portion of the plating 200 of each of the sheathed shield wires 2 is sandwiched between the cylindrical portion 301 of the conductive end portion holding member 3 and the end fixing member 4, whereby the core wire 21 of each of the sheathed shield wire 2. Is electrically connected to the end holding member 3 through the plating 200. Further, the fastening portion 302 of the end holding member 3 is fixed to the casing, so that the core wire 21 of each sheathed shield wire 2 is electrically connected to the casing through the plating 200 and the end holding member 3. The

  Therefore, if the electromagnetic shielding member 1 is employed, the end portion 20 of each of the covering shield strands 2 can be easily endped without requiring a step of peeling off the insulating coating 22 of the end portion 20 of each of the covering shield strands 2 in advance. It can be joined to the fixing member 4, and thus the end 20 of the sheathed shield wire 2 can be grounded easily.

  In the electromagnetic shield member 1, a plurality of covered shield strands 2 are integrated in a comb shape as a shield strand group 2 </ b> X by a flexible shield strand connecting portion 5. Therefore, it becomes easy to handle the plurality of sheathed shield wires 2 when each sheathed shield wire 2 is fixed to the cylindrical portion 301.

<First application example of fixing structure of sheathed shield wire>
Next, with reference to FIG. 6, a description will be given of a fixing structure of a sheathed shield wire according to a first application example applicable to the wire harness 10. FIG. 6 is a cross-sectional view of the fixing structure of the covered shield wire according to the first application example. Hereinafter, differences between the first application example and the covering shield element fixing structure shown in FIG. 4 will be described.

  In the first application example shown in FIG. 6, the end holding member 3 </ b> A has a cylindrical portion 301 </ b> A and a fastening portion 302. Since the fastening portion 302 of the end holding member 3A is the same as the fastening portion 302 of the end holding member 3, the drawing of the fastening portion 302 is omitted in FIG.

  In the end holding member 3A, a convex portion 304 is formed in a region where the portion of the plating 200 of each of the sheathed shield wires 2 on the outer peripheral surface of the cylindrical portion 301A crosses. In the example shown in FIG. 6, the plurality of convex portions 304 are formed on the outer peripheral surface of the cylindrical portion 301 </ b> A, but it is also conceivable that there is one convex portion 304.

  The end fixing member 4 is connected in a state in which the portion of the plating 200 of each of the sheathed shield wires 2 is sandwiched with respect to the portion where the convex portion 304 is located on the outer peripheral surface of the cylindrical portion 301A. As a result, the portion of the plating 200 and the end fixing member 4 of each of the sheathed shield wires 2 are distorted along the top of the convex portion 304. That is, the top portion of the convex portion 304 is in a state of being bitten into the portion of the plating 200 of each of the sheathed shield wires 2. Therefore, the portion of the plating 200 of each of the sheathed shield wires 2 and the cylindrical portion 301 of the end holding member 3 are more reliably electrically connected.

<Second application example and third application example of fixing structure of sheathed shield wire>
Next, with reference to FIGS. 7 and 8, the fixing structure of the covered shield wire according to the second application example and the third application example applicable to the wire harness 10 will be described. FIG. 7 is a cross-sectional view of the fixing structure of the covered shield wire according to the second application example. FIG. 8 is a cross-sectional view of the fixing structure of the covered shield wire according to the third application example. Hereinafter, differences between the second application example and the third application example and the fixing structure of the covered shield strand shown in FIG. 4 will be described.

  In the second application example shown in FIG. 7, the end holding member 3 </ b> B has a cylindrical portion 301 </ b> B and a fastening portion 302. Further, in the third application example illustrated in FIG. 8, the end holding member 3 </ b> C includes a cylindrical portion 301 </ b> C and a fastening portion 302. Since the fastening portions 302 of the end holding members 3B and 3C are the same as the fastening portions 302 of the end holding member 3, the drawing of the fastening portions 302 is omitted in FIGS.

  In the end holding member 3B, a hole 305 is formed in a region where the portion of the plating 200 of each of the sheathed shield wires 2 on the outer peripheral surface of the cylindrical portion 301B crosses. The hole portion 305 is a portion that is recessed from the outer peripheral surface of the cylindrical portion 301B so as to be shallower than its thickness.

  Similarly, in the end holding member 3C, a hole 305X is formed in a region where the portion of the plating 200 of each sheathed shield wire 2 crosses on the outer peripheral surface of the cylindrical portion 301C. The hole portion 305X is a hole (through hole) penetrating from the outer peripheral surface to the inner peripheral surface of the cylindrical portion 301B.

  In the example shown in FIGS. 8 and 9, one hole 305, 305X is formed on the outer peripheral surface of the cylinders 301B, 301C, but a plurality of holes 305, 305X are formed in the cylinders 301B, 301C. It is also possible.

  The end fixing member 4 is connected in a state in which the portion of the plating 200 of each of the covering shield strands 2 is sandwiched with the portion where the hole portions 305 and 305X are located on the outer peripheral surfaces of the cylinder portions 301B and 301C. As a result, the portion of the plating 200 and the end fixing member 4 of each of the sheathed shield wires 2 are distorted along the edge portions of the holes 305 and 305X. That is, the edge portions of the hole portions 305 and 305X are in a state of being bitten into the portions of the plating 200 of the covering shield strands 2 respectively. Therefore, the portion of the plating 200 of each of the sheathed shield wires 2 and the cylindrical portion 301 of the end holding member 3 are more reliably electrically connected.

Second Embodiment
Next, the wire harness 10A according to the second embodiment will be described with reference to FIG. FIG. 9 is a perspective view of the main part of the wire harness 10A. 9, the same components as those shown in FIGS. 1 to 8 are given the same reference numerals. Hereinafter, the difference of the wire harness 10A from the wire harness 10 will be described.

  Similar to the wire harness 10, the wire harness 10 </ b> A includes a molded resin-attached electric wire 9 including a main electric wire 81 and an electromagnetic shield member 1 </ b> A. Similar to the electromagnetic shield member 1, the electromagnetic shield member 1 </ b> A includes a plurality of covered shield strands 2, an end holding member 3, and an end fixing member 4.

  In the example shown in FIG. 9, both end portions of the end fixing member 4 form a connecting portion 310 that is connected by being folded. As a result, the end fixing member 4 is maintained in an annular shape in a state where the portion where the plating 200 is formed in each of the plurality of covered shield strands 2 is sandwiched between the cylindrical portion 301.

  The end holding member 3 and the end fixing member 4 shown in FIG. 9 have the same structure, although the shapes are different from the end holding member 3 and the end fixing member 4 shown in FIGS. .

  The electromagnetic shield member 1 </ b> A includes a shield wire binding member 6 in addition to the configuration of the electromagnetic shield member 1. The shield wire binding member 6 is a member that gently binds the intermediate portion of the first sheathed shield wire 201 and the intermediate portion of the second sheathed shield wire 202 at an interval.

  For example, the shield strand binding member 6 is a string-like member that is gently wound spirally around the intermediate portion of the first covered shield strand 201 and the intermediate portion of the second covered shield strand 202. In the example shown in FIG. 9, the end 60 of the string-shaped shield strand binding member 6 is fixed to the end fixing member 4 with an adhesive or the like.

  If the electromagnetic shielding member 1A is employed, the shield wire binding member 6 is between the first covered shield wire 201 that is not connected by the shield wire connecting portion 5 and the second covered shield wire 202 adjacent thereto. It is also possible to prevent a large gap from being formed. Accordingly, it is possible to more reliably prevent the shielding performance from deteriorating.

<Application example of electromagnetic shielding member>
Next, an electromagnetic shielding member 1B according to an application example applicable to the wire harness 10 will be described with reference to FIG. FIG. 10 is a perspective view of the main part of the electromagnetic shielding member 1B. 10, the same components as those shown in FIGS. 1 to 9 are given the same reference numerals. Hereinafter, the difference between the electromagnetic shielding member 1B and the electromagnetic shielding member 1 will be described.

  In the electromagnetic shielding member 1 </ b> B, the plurality of covered shield strands 2 have a structure knitted into a cylindrical shape, like a general braided wire. Also, plating 200 is formed on the surface of the core wire 21 at both ends of the plurality of sheathed shield wires 2 that are knitted and formed into a cylindrical shape.

  The plating 200 for each of the coated shield strands 2 in this application example is also formed by the plating forming process shown in FIG. That is, the end portions 20 of the plurality of sheathed shield wires 2 that are knitted and formed into a cylindrical shape are immersed in the plating solution 200X with the insulating coating 22 still formed. Thereby, the plating 200 is formed.

  Also in the electromagnetic shield member 1 </ b> B, the portion of the plating 200 in each of the covered shield strands 2 is fixed to the cylindrical portion 301 of the end holding member 3 by the end fixing member 4. That is, the cylindrical portion 301 holds the portions of the plating 200 of each of the sheathed shield wires 2 knitted in a cylindrical shape in a state where they are arranged in an annular shape. Further, the end fixing member 4 is fixed by sandwiching the portions of the plating 200 in each of the sheathed shield wires 2 knitted into a cylindrical shape with the outer peripheral surface of the cylindrical portion 301 in a state where they are arranged in a ring shape. Yes.

  When the electromagnetic shielding member 1B shown in FIG. 10 is employed, the same effect as that obtained when the electromagnetic shielding member 1 is employed can be obtained. Moreover, the shield strand connecting part 5 and the shield strand binding member 6 can be omitted. Therefore, the number of components of the electromagnetic shield member 1B can be reduced.

<Application examples of shield wire group>
Next, a shield wire group 2Y according to an application example applicable to the wire harnesses 10 and 10A will be described with reference to FIG. FIG. 11 is a plan view of the shield wire group 2Y. In FIG. 11, the same components as those shown in FIGS. 1 to 10 are given the same reference numerals. Hereinafter, the points of the shield strand group 2Y different from the shield strand group 2X will be described.

  Similarly to the shield strand group 2X, the shield strand group 2Y has a structure in which a plurality of covered shield strands 2 are connected in a comb shape by the shield strand connecting portions 5A.

  The shield wire connecting portion 5 </ b> A is a flexible string-like member and performs the same function as the shield wire connecting portion 5. The shield wire connecting portion 5A has an intermediate portion between the two end portions 20 of each of the three or more sheathed shield wires 2 other than between the first sheathed shield wire 201 and the second sheathed shield wire 202. They are linked at intervals.

  In the example shown in FIG. 11, the shield wire connecting portion 5 </ b> A has a plurality of tie portions 52 tied to the intermediate portion of each of the covered shield strands 2 and a string-like base portion 51 that connects the tie portions 52. . It is also conceivable that a shield wire group 2Y having a structure in which a plurality of covered shield wire 2 are connected by such a shield wire connecting portion 5A is employed instead of the shield wire group 2X.

<Other application examples>
In the electromagnetic shield members 1, 1 </ b> A, 1 </ b> B, the plurality of shield wires sandwiched by the end holding member 3 and the end fixing member 4 may include a plurality of covered shield wires 2 and a plurality of bare wires. It is done. In this case, each bare wire employed as the shield wire is a wire of the same type of metal.

  In the electromagnetic shield members 1, 1 </ b> A, 1 </ b> B, the end fixing member 4 is formed so that the portion of the plating 200 in each of the sheathed shield wires 2 is between the outer peripheral surfaces of the cylindrical portions 301, 301 </ b> A, 301 </ b> B in a state where they are arranged in a ring shape. Any member may be used as long as it is sandwiched between and fixed. For example, in addition to the case where the end fixing member 4 is a conductive member, the end fixing member 4 may be an insulating member (non-conductive member). Further, as the end fixing member 4, for example, a spring-shaped band member made of a shape memory alloy in addition to the caulking ring or the caulking band may be employed.

  In addition, the electromagnetic shielding member and the wire harness according to the present invention can be freely combined with each of the embodiments and application examples shown above or within the scope of the invention described in each claim. The example may be configured by appropriately modifying or omitting some of the examples.

1, 1A, 1B Electromagnetic shield member 10, 10A Wire harness 2 Coated shield wire 20 End of coated shield wire 200 Plating 200X Plating solution 201 First coated shield wire 202 Second coated shield wire 203 Third coated shield Wire 21 Core wire of sheathed shield wire 22 Insulation coating of sheathed shield wire 2X, 2Y Shield wire group 3, 3A, 3B, 3C End holding member 300 Through hole 301, 301A, 301B Tube portion 302 Fastening portion 303 Screw Hole 304 Protruding portion 305, 305X Hole portion 310 Connecting portion of annular holding portion 4 End fixing member 5, 5A Shield wire connecting portion 51 String-like base portion 52 Knotting portion 6 Shield wire binding member 60 End of shield wire connecting member Part 7 Resin mold part 80 Electric wire with terminal 81 Main electric wire 811 Core wire of main electric wire 812 Disconnection of main electric wire Edge coating 82 Terminal 9 Molded resin wire 90 Plating bath

Claims (5)

A plurality of covered shield elements each having a conductive core wire and an insulating coating formed on the outer peripheral surface of the core wire, and further having a plating formed on the surface of the end portion of the core wire and electrically connected to the core wire Lines and,
A conductive end holding member having an annular cylindrical portion for holding the plated portions of each of the coated shield strands in a state in which they are arranged in an annular shape;
An end fixing member for fixing the plating portion of each of the coated shield strands by sandwiching them between the outer peripheral surface of the cylindrical portion in a state in which they are arranged in an annular shape,
Three or more sheathed shield wires arranged in parallel in a plane are held in the cylindrical portion to be arranged in an annular shape,
Of the three or more sheathed shield wires arranged in parallel in the plane, two sheathed shield wires positioned at one end and the other end along the parallel direction are respectively designated as a first sheathed shield wire and a second sheathed shield strand. If it is a line,
An intermediate portion between both end portions of each of the sheathed shield wires is held by the cylindrical portion so that the first sheathed shield wire and the second sheathed shield strand are adjacent to each other in an annularly arranged state. The electromagnetic shielding member further provided with the flexible shield strand connection part which connects at intervals other than between.   The electromagnetic shielding member according to claim 1, wherein at least one of a convex portion and a hole portion is formed in a region where the plated portion of each of the coated shield strands on the outer peripheral surface of the cylindrical portion crosses.   The shield wire binding member further comprising a shield wire binding member for gently binding the intermediate portion of the first sheathed shield wire and the intermediate portion of the second sheathed shield wire with a space therebetween. The electromagnetic shielding member as described. A main electric wire subject to electromagnetic shielding;
An electromagnetic shielding member formed around the main wire, and
The electromagnetic shielding member is
A plurality of covered shield elements each having a conductive core wire and an insulating coating formed on the outer peripheral surface of the core wire, and further having a plating formed on the surface of the end portion of the core wire and electrically connected to the core wire Lines and,
A conductive end holding member having an annular cylindrical portion surrounding a part of the main wire while holding the plated portions of each of the coated shield strands in a state in which they are arranged in an annular shape;
An end fixing member for fixing the plating portion of each of the coated shield strands by sandwiching them between the outer peripheral surface of the cylindrical portion in a state in which they are arranged in an annular shape,
Three or more sheathed shield wires arranged in parallel in a plane are held in the cylindrical portion to be arranged in an annular shape,
Of the three or more sheathed shield wires arranged in parallel in the plane, two sheathed shield wires positioned at one end and the other end along the parallel direction are respectively designated as a first sheathed shield wire and a second sheathed shield strand. If it is a line,
An intermediate portion between both end portions of each of the sheathed shield wires is held by the cylindrical portion so that the first sheathed shield wire and the second sheathed shield strand are adjacent to each other in an annularly arranged state. A wire harness further comprising a flexible shield wire connecting portion that is connected at intervals other than between. (A) preparing a conductive core wire and three or more sheathed shield wires each having an insulating coating formed on the outer peripheral surface of the core wire;
(B) The intermediate portions between the two ends of each of the three or more coated shield strands are connected to each other with a flexible shield strand connecting portion, and the three or more coated shield strands are interleaved. The process of integrating into a shape,
(C) forming a plating while dissolving the surrounding insulating coating on the surface of the end of the core wire in each of the three or more coated shield strands;
(D) After the step (b) and the step (c), the plated portion of each of the three or more coated shield strands is connected to the outer peripheral surface of the annular cylindrical portion of the conductive end holding member. In a state of being annularly arranged, and fixing between the outer peripheral surface of the cylindrical portion by the end fixing member,
A method for manufacturing an electromagnetic shielding member.

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