JP2009093934A - Shielded wire, and manufacturing method for shielded wire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shielded wire capable of obtaining suitable shield performance and easily processing, which does not produce a wasteful material and takes the environment into consideration. <P>SOLUTION: The shielded wire 1 is provided with a plurality of coated wires 2, a drain wire 3, and a conductive sheet 4. The coated wire 2 has a core wire 11 and a coated section 12. The drain wire 3 is formed by twisting one or a plurality of wires. The conductive sheet 4 is formed on an insulated layer 13, and is narrower than the width of the insulated layer 13, and has a conductive layer 14 laminated on the insulated layer 13 by exposing both ends 13a, 13b of the laminated layer 13 in the width direction of the insulated layer 13. The conductive sheet 4 is wound on the outer periphery of the plurality of coated wires 2 and the drain wire 3 while the conductive layer is located at an internal side and the insulated layer 13 is located at an external side, and both ends 13a, 13b of the insulated layer 13 in the width direction of the insulated layer 13 are welded by overlapping each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shielded electric wire having a shielding function against noise and a method for manufacturing the shielded electric wire.

  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 includes a plurality of electric wires and terminal fittings attached to the ends of the electric wires.

  A shielded electric wire may be used as the electric wire constituting the wire harness described above (see, for example, Patent Document 1). This type of shielded electric wire includes a plurality of covered electric wires, a drain wire, a metal tape, and a sheath. Each of the plurality of covered electric wires includes a conductive core wire and a covering portion that covers the core wire. The core wire has a round cross section and includes copper or a copper alloy. The covering portion is made of an insulating synthetic resin. The drain line has a round cross section and is made of a conductive metal such as copper or a copper alloy.

  The metal tape has, for example, an insulating layer made of an insulating synthetic resin such as polyester and a conductive layer laminated on the insulating layer and made of a conductive metal such as copper, copper alloy, or aluminum. It is formed in a thin strip shape. The metal tape covers the plurality of covered electric wires and the drain wire and is in contact with the drain wire. Further, the metal tape has a shape in which the other end is overlapped with one end in the width direction and the surface of the insulating layer at the one end and the surface of the conductor layer at the other end are in contact with each other, and a plurality of covered electric wires It covers the line.

  The sheath is made of a synthetic resin having an insulating property, and covers the outer periphery of a bundle of wires in which a plurality of covered wires and drain wires are covered with a metal tape. This sheath is formed on the outer periphery of these electric wire bundles by extrusion molding.

In the shielded wire described above, when noise from the outside tries to enter the core wire of each covered wire, this noise is transmitted to the conductor layer of the metal tape. The noise is released outside the shielded wire through the drain wire. Thus, the shielded wire prevents external noise from entering the core wire of each covered wire.
Japanese Patent Laid-Open No. 2005-222832

  When the terminal treatment is applied to the shielded electric wire described above, a metal strip and a sheath at both ends are stripped to remove a required length, and terminal fittings are attached to both ends of the covered electric wire and the drain wire. However, these processes have many man-hours, are complicated, and are not suitable for automation because they easily damage the wire, resulting in an increase in processing time and processing cost. Furthermore, since the portion peeled off by the sheath strip is discarded, there is a problem that the material is wasted and is not desirable from the viewpoint of environmental protection.

  As a shielded electric wire for improving the above-described problem, a shielded electric wire in which a conductor sheet as a metal tape is wound around the outer periphery of a covered electric wire and a drain wire in which terminal fittings are attached in advance has been devised. However, this shielded electric wire has the other end overlapped with one end in the width direction of the conductor sheet, and the surface of the insulating layer at the one end and the surface of the conductor layer at the other end are bonded with an adhesive such as hot melt. Since they are bonded, there is a risk of peeling due to heat, bending, or the like, and there is a problem that poor adhesion of the conductive thin film sheet occurs, that is, the shielding performance is lowered.

  Therefore, an object of the present invention is to provide a shielded electric wire that is environmentally friendly and that can provide good shielding performance, is easy to process, and does not waste material.

  In order to solve the above-mentioned problems and achieve the object, the invention described in claim 1 includes at least one electric wire, an insulating insulating layer covering the electric wire, and a conductive layer laminated on the insulating layer. A conductor sheet having a conductor layer, wherein the conductor layer is formed narrower than a width of the insulating layer, and both end portions in the width direction of the insulating layer are exposed. And the conductor sheet is wound around the outer periphery of the electric wire in a state where the conductor layer is located on the inner side and the insulating layer is located on the outer side. The shielded electric wire is characterized in that the both end portions of the layer are overlapped with each other and the both end portions are welded to each other.

  The invention described in claim 2 is a pair of conductor sheets having at least one electric wire, an insulating insulating layer covering the electric wire, and a conductive conductor layer laminated on the insulating layer, The conductor layer of each of the pair of conductor sheets is formed narrower than the width of the insulating layer, and both end portions in the width direction of the insulating layer are exposed to Laminated on an insulating layer, the pair of conductor sheets are stacked on each other with the conductor layer positioned on the inner side and the insulating layer positioned on the outer side, and sandwiching the electric wire between each other, The shielded electric wire is characterized in that end portions in the width direction of the insulating layers overlapped with each other are welded.

  The invention described in claim 3 is the conductor sheet according to claim 1 or 2, wherein the welded portion where the both end portions of the insulating layer are welded is along the longitudinal direction of the electric wire. It is characterized by being provided over the entire length.

  According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the welding locations where the both end portions of the insulating layer are welded are arranged at intervals in the longitudinal direction of the electric wire. It is characterized by being.

  According to a fifth aspect of the present invention, at least one electric wire, an insulating layer, and a width smaller than the width of the insulating layer are formed, and both end portions in the width direction of the insulating layer are exposed on the insulating layer. In a method of manufacturing a shielded electric wire comprising a conductor sheet having a laminated conductor layer, the electric wire is arranged in a state where the conductor layer is located on the inner side and the insulating layer is located on the outer side. The both ends of the insulating layer of the conductor sheet are overlapped with each other while the electric wire is moved in the longitudinal direction, and the two ends are welded together by ultrasonic welding. It is a manufacturing method of the shielded electric wire made into.

  According to a sixth aspect of the present invention, at least one electric wire, an insulating layer and a width narrower than the width of the insulating layer are formed, and both end portions in the width direction of the insulating layer are exposed on the insulating layer. In a method of manufacturing a shielded electric wire comprising a pair of conductor sheets having a laminated conductor layer, the pair of conductor sheets are in a state where the conductor layer is located on the inside and the insulating layer is located on the outside Then, while superposing the electric wire between each other, and superposing the ends in the width direction of the insulating layer of the pair of conductor sheets while moving the electric wire in the longitudinal direction, ultrasonic welding It is the manufacturing method of the shielded electric wire characterized by welding the said edge parts by performing.

  According to the first aspect of the present invention, the insulating layer and the conductor layer formed to be narrower than the width of the insulating layer and laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer; A conductor sheet having a conductor layer positioned on the inner side and an insulating layer positioned on the outer side, wound around the outer periphery of at least one electric wire, and both end portions of the insulating layer are overlapped and welded to each other. Therefore, peeling of the welding location of the conductor sheet due to heat or bending can be reduced. Moreover, there are few parts to weld and processing time can be reduced. Furthermore, a conductor sheet can be wound around the outer periphery of the electric wire to which the terminal fitting is previously attached.

  According to the invention described in claim 2, the insulating layer and the conductor layer formed to be narrower than the width of the insulating layer and laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer; A pair of conductor sheets having a conductor layer positioned on the inside and an insulating layer positioned on the outside, and sandwiching at least one electric wire between each other, and the insulating layers stacked on each other Since the end portions in the width direction are welded to each other, a process such as bending the conductor sheet is unnecessary, and therefore processing is easy. Moreover, the electric wire by which the terminal metal fitting was previously attached between a pair of conductor sheets can be pinched | interposed.

  According to the invention described in claim 3, since the welding location where both ends of the insulating layer are welded is provided over the entire length of the conductor sheet along the longitudinal direction of the electric wire, welding of the conductor sheet is performed. It is possible to prevent a gap from occurring in the formed portion.

  According to the invention described in claim 4, since the welding locations where both ends of the insulating layer are welded are arranged at intervals in the longitudinal direction of the electric wire, the number of welding locations of the conductor sheet is reduced. Thus, the processing time can be reduced.

  According to the invention described in claim 5, the conductor sheet is wound around the outer periphery of the electric wire in a state where the conductive layer is located on the inner side and the insulating layer is located on the outer side, and the electric wire is moved in the longitudinal direction thereof. Since both ends of the insulating layer of the conductor sheet are overlapped with each other and the ends are welded together by ultrasonic welding, peeling of the welded portion of the conductor sheet due to heat or bending can be reduced. Moreover, there are few parts to weld and processing time can be reduced. Furthermore, a conductor sheet can be wound around the outer periphery of the electric wire to which the terminal fitting is previously attached.

  According to the invention described in claim 6, the pair of conductor sheets are stacked with the electric wires sandwiched between each other in a state where the conductive layer is located on the inner side and the insulating layer is located on the outer side. Since the ends in the width direction of the insulation layer of the pair of conductor sheets are overlapped while moving in the longitudinal direction and the ends are welded by ultrasonic welding, a process such as bending the conductor sheet is unnecessary. Therefore, processing is easy. Moreover, the electric wire by which the terminal metal fitting was previously attached between a pair of conductor sheets can be pinched | interposed.

  Since the invention described in claim 1 can reduce peeling of the welded portion of the conductor sheet due to heat, bending, etc., noise can be reliably prevented and good shielding performance can be obtained. . Moreover, since there are few parts to weld and processing time can be reduced, working efficiency can be improved. Furthermore, since the conductor sheet can be wound around the outer periphery of the electric wire to which the terminal fitting is attached in advance, there is no need to peel off the required length of the conductor sheet, and it is easy to process and does not waste material. It can be an electric wire.

  Since the invention described in claim 2 does not require a process such as bending the conductor sheet, the processing becomes easy and the processing time can be reduced, so that the working efficiency can be improved. In addition, since it is possible to sandwich an electric wire with terminal fittings attached in advance between a pair of conductor sheets, it is not necessary to peel off the required length of the conductor sheet, and it is easy to process and does not waste material. It can be a shielded wire.

  Since the invention described in claim 3 can prevent a gap from being formed in the welded portion of the conductor sheet, noise can be reliably prevented from entering, and thus good shielding performance can be obtained. Can do.

  In the invention described in claim 4, since the processing time can be reduced by reducing the number of welded portions of the conductor sheet, the working efficiency can be improved.

  Since the invention described in claim 5 can reduce peeling of the welded portion of the conductor sheet due to heat, bending, etc., noise can be reliably prevented from entering, and good shielding performance can be obtained. . Moreover, since there are few parts to weld and processing time can be reduced, working efficiency can be improved. Furthermore, since the conductor sheet can be wound around the outer periphery of the electric wire to which the terminal fitting is attached in advance, there is no need to peel off the required length of the conductor sheet, and it is easy to process and does not waste material. It can be an electric wire.

  In the invention described in claim 6, since a process such as bending the conductor sheet is unnecessary, the processing becomes easy and the processing time can be reduced, so that the working efficiency can be improved. In addition, since it is possible to sandwich an electric wire with terminal fittings attached in advance between a pair of conductor sheets, it is not necessary to peel off the required length of the conductor sheet, and it is easy to process and does not waste material. It can be a shielded wire.

  Hereinafter, a shielded electric wire according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the shielded electric wire 1 includes a plurality of covered electric wires 2, one drain wire 3, and a conductor sheet 4.

  As shown in FIG. 1 or FIG. 3, the plurality of covered electric wires 2 are provided in the illustrated example and are bundled in parallel (that is, in parallel). Each of the plurality of covered electric wires 2 is formed in a round cross section having a core wire 11 and a covering portion 12 that covers the core wire 11.

  The core wire 11 is formed by twisting one conductive wire or a plurality of conductive wires, and has a round cross section. Moreover, the core wire 11 is comprised with the metal which has electroconductivity, such as copper or a copper alloy, and has flexibility. The covering portion 12 is made of an insulating synthetic resin, and covers the core wire 11 while keeping it in an insulating state. Further, a terminal fitting 15 (shown in FIG. 4) attached to a connector housing, an electric connection box or the like is attached to the end of the covered electric wire 2.

  Similarly to the core wire 11 of the covered electric wire 2, the drain wire 3 is formed by twisting one conductive wire or a plurality of conductive wires and having a round cross section. The drain line 3 is made of a conductive metal such as copper or a copper alloy, and has flexibility. The drain wire 3 is bundled together with a plurality of electric wires 2 and arranged on the outer periphery of a bundle formed by bundling these wires. Further, a terminal fitting 15 (shown in FIG. 4) attached to a connector housing, an electric connection box or the like is attached to the terminal of the drain wire 3. And these covered electric wire 2 and the drain wire 3 comprise the electric wire as described in a claim.

  As shown in FIG. 1 or 2, the conductor sheet 4 has a thin insulating layer 13 and a thin conductor layer 14 laminated on the insulating layer 13, and is formed in a relatively thin strip shape. The insulating layer 13 is made of a synthetic resin having insulation properties such as polyvinyl chloride (PVC), and is formed in a thin strip shape. The insulating layer 13 has flexibility.

  The conductor layer 14 contains a conductive metal such as aluminum or an aluminum alloy. The conductor layer 14 has flexibility. The conductor layer 14 is formed in a thin strip shape and narrower than the width of the insulating layer 13 described above, and is laminated on the insulating layer 13 by exposing both end portions 13a and 13b in the width direction of the insulating layer 13. Has been.

  The shielded electric wire 1 is formed by bundling a plurality of covered electric wires 2 having terminal fittings 15 attached to terminals and drain wires 3, with the conductor layer 14 positioned on the inner side and the insulating layer 13 positioned on the outer side. The sheet 4 is wound around the outer circumferences of the plurality of covered electric wires 2 and drain wires 3 in a rolled sushi shape.

  Furthermore, the shielded electric wire 1 has one end 13a and the other end 13b in the width direction of the insulating layer 13 of the conductor sheet 4 overlapped with each other, that is, both ends 13a and 13b in the width direction of the insulating layer 13 of the conductor sheet 4. These two end portions 13a and 13b are welded to each other by a known welding method such as ultrasonic welding (also referred to as ultrasonic welding or ultrasonic bonding).

  The ultrasonic welding described above is performed by a known ultrasonic welding machine 6 as shown in FIG. The ultrasonic welding machine 6 sends out a plurality of coated electric wires 2 and drain wires 3 on the conductor sheet 4 in a vertically attached state, and the conductor sheets 4, the plurality of coated electric wires 2 and the drain wires 3 in the longitudinal direction. , A supply unit 20 for winding the conductor sheet 4 around the outer periphery of the covered wire 2 and the drain wire 3, a chip (also called a tool horn) 21, an anvil 22 facing the chip 21, an oscillator (not shown), A vibrator, cone, horn, etc. are provided.

  The ultrasonic welder 6 includes a chip 21 and an anvil 22 formed on both ends 13a and 13b of the insulating layer 13 of the conductor sheet 4 wound around the outer periphery of the covered wire 2 and the drain wire 3 delivered from the supply unit 20. In a state where these chip 21 and anvil 22 are pressed in a direction to approach each other, the vibrator is vibrated by an oscillator and this vibration is transmitted to the chip 21 via a cone and a horn.

  The ultrasonic welder 6 applies ultrasonic vibration to the both end portions 13a and 13b sandwiched between the chip 21 and the anvil 22, and the both end portions 13a and 13b are connected to the plurality of covered electric wires 2 and drain wires. 3 is welded over the entire length of the conductor sheet 4. That is, as shown in FIG. 5, the shielded wire 1 has welded portions W where both end portions 13 a and 13 b of the insulating layer 13 of the conductor sheet 4 are welded in the longitudinal direction of the plurality of covered wires 2 and drain wires 3. Along the entire length of the conductor sheet 4.

  The shielded electric wire 1 having the above-described configuration is assembled with other sub-harnesses constituting the wire harness, assembled as a wire harness, and routed in an automobile or the like. In this way, the shielded electric wire 1 grounds the noise to enter the plurality of covered wires 2 from the outside through the conductor layer 14 and the drain wire 3 of the conductor sheet 4, and the noise enters the plurality of covered wires 2. To prevent.

  According to the shielded electric wire 1 of the present embodiment, the insulating layer 13 is formed so as to be narrower than the width of the insulating layer 13 and is laminated on the insulating layer 13 with both end portions in the width direction of the insulating layer 13 exposed. The conductor sheet 4 having the conductor layer 14 is wound around the outer circumferences of the plurality of covered electric wires 2 and the drain wires 3 with the conductor layer 14 positioned on the inner side and the insulating layer 13 positioned on the outer side. Both end portions 13a and 13b of the layer 13 are overlapped and welded to each other.

  For this reason, since peeling of the welding location W of the conductor sheet 4 due to heat, bending, or the like can be reduced, intrusion of noise can be reliably prevented, and good shielding performance can be obtained. Moreover, since there are few parts to weld and processing time can be reduced, working efficiency can be improved. Furthermore, since the conductor sheet 4 can be wound around the outer circumferences of the plurality of covered electric wires 2 and drain wires 3 to which the terminal fittings 15 are attached in advance, it is not necessary to peel off the required length of the conductor sheet 4, and processing is easy and It can be set as the shielded electric wire 1 in consideration of the environment which does not waste a material.

  Moreover, since the welding location W where both ends 13a and 13b of the insulating layer 13 are welded is provided over the entire length of the conductor sheet 4 along the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3, It can prevent that a clearance gap produces in the part to which the conductor sheet 4 was welded. For this reason, intrusion of noise can be surely prevented, and thus good shielding performance can be obtained.

  In the embodiment described above, the conductor sheet 4 of the shielded electric wire 1 is wound around the outer periphery of the plurality of covered electric wires 2 and the drain wires 3 with the conductor layer 14 positioned on the inner side and the insulating layer 13 positioned on the outer side. The both end portions 13a and 13b in the width direction of the insulating layer 13 are welded to each other. However, in the present invention, as shown in FIGS. 6 to 9, a plurality of coverings are provided between a pair of conductor sheets 4 which are overlapped with each other in a state where the conductor layer 14 is located on the inner side and the insulating layer 13 is located on the outer side. The shielded electric wire 1 ′ may be configured by welding the widthwise ends 13a, 13a, 13b, 13b of the insulating layer 13 of the pair of conductor sheets 4 with the electric wire 2 and the drain wire 3 interposed therebetween. 6 to 9, the same parts as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the case shown in FIGS. 6 to 9, the shielded electric wire 1 ′ is formed narrower than the width of the insulating layer 13 and the insulating layer 13, and both end portions in the width direction of the insulating layer 13 are exposed on the insulating layer 13. And a pair of conductor sheets 4 having conductor layers 14 laminated. The pair of conductor sheets 4 are superposed on each other with the conductor layer 14 positioned on the inner side and the insulating layer 13 positioned on the outer side.

  The shielded electric wire 1 ′ has a plurality of covered electric wires 2 with terminal fittings 15 attached to the terminal and the drain wires 3 bundled together so that the conductor layer 14 is positioned on the side of the plural covered electric wires 2 and the drain wires 3. A pair of conductor sheets 4 are overlapped with each other so as to sandwich the covered electric wire 2 and the drain wire 3.

  Furthermore, in the shielded electric wire 1 ′, one end portions 13 a and 13 a and the other end portions 13 b and 13 b in the width direction of the insulating layer 13 of the pair of conductor sheets 4 stacked on each other are ultrasonically welded (ultrasonic welding or They are welded to each other by a known welding method such as ultrasonic bonding.

  The ultrasonic welding described above is performed by a known ultrasonic welding machine 6 'as shown in FIG. The ultrasonic welding machine 6 ′ includes a pair of holding portions 24 that hold both ends of the plurality of covered electric wires 2 and drain wires 3 and are movable along the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3. A supply unit 23 that is positioned between the pair of holding portions 24 and sandwiches the covered electric wire 2 and the drain wire 3 and feeds the pair of conductor sheets 4 to each other; a pair of tips (also referred to as a tool horn) 21; A pair of anvils 22 opposed to the pair of chips 21, an oscillator (not shown), a vibrator, a cone, a horn, and the like are provided.

  The ultrasonic welder 6 ′ includes end portions 13a and 13a in the width direction of the insulating layer 13 of the pair of conductor sheets 4 that are superposed on each other with the covered electric wire 2 and the drain wire 3 sent out from the supply unit 23 therebetween. The other end portions 13b and 13b are sandwiched between the respective chips 21 and the respective anvils 22, and the vibrator is vibrated by the oscillator in a state where these chips 21 and the anvils 22 are pressurized in a direction approaching each other. Then, this vibration is transmitted to the chip 21 via the cone and the horn.

  The ultrasonic welding machine applies ultrasonic vibrations to the one end portions 13a and 13a and the other end portions 13b and 13b sandwiched between the respective chips 21 and the respective anvils 22 to thereby provide the one end portions 13a and 13a. The other ends 13b and 13b are welded over the entire length of the conductor sheet 4 along the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3, respectively.

  That is, as shown in FIG. 9, the shielded electric wire 1 ′ includes one end portions 13 a, 13 a in the width direction of the insulating layer 13 of the pair of conductor sheets 4 and the other end portions 13 b, 13 b, that is, the end portions 13 a, 13 a, The welding location W where 13b and 13b were welded is provided over the full length of this conductor sheet 4 along the longitudinal direction of the some covered electric wire 2 and the drain wire 3. As shown in FIG.

  In the shielded electric wire 1 ′ having the above-described configuration, the drain wire 3 and the conductor layer 14 are in contact with each other, and the drain wire 3 in contact with the conductor layer 14 is connected to a desired ground circuit or the like. Such a shielded electric wire 1 ′ is assembled with other sub-harnesses constituting the wire harness, and is routed in an automobile or the like, and noise that tries to enter the plurality of covered electric wires 2 from the outside is detected by the conductor sheet. 4 is grounded through the conductor layer 14 and the drain wire 3 to prevent the noise from entering the plurality of covered electric wires 2.

  According to the shielded electric wire 1 ′ of this embodiment, the insulating layer 13 is formed to be narrower than the width of the insulating layer 13, and both end portions 13 a and 13 b in the width direction of the insulating layer 13 are exposed on the insulating layer 13. A pair of conductor sheets 4 having the conductor layers 14 stacked on top of each other are overlapped with each other with the conductor layer 14 positioned on the inner side and the insulating layer 13 positioned on the outer side. In addition, the end portions 13a, 13a, 13b, and 13b of the insulating layer 13 that are overlapped with each other are welded with the drain line 3 interposed therebetween.

  For this reason, since the process of bending the conductor sheet 4 etc. is unnecessary, a process becomes easy and processing time can be reduced, Therefore The working efficiency can be improved. Further, since the plurality of covered electric wires 2 and drain wires 3 to which the terminal fittings 15 are attached in advance can be sandwiched between the pair of conductor sheets 4, it is not necessary to strip the conductor sheet 4 to a required length, and processing is easy. And it can be set as the shielded electric wire in consideration of the environment which does not waste a material.

  Moreover, the welding location W where the end portions 13 a, 13 a, 13 b, and 13 b of the insulating layer 13 are welded covers the entire length of the pair of conductor sheets 4 along the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3. Since it is provided, it is possible to prevent a gap from being generated in the welded portion of the pair of conductor sheets 4. For this reason, intrusion of noise can be surely prevented, and thus good shielding performance can be obtained.

  In the above-described embodiment, as shown in FIG. 5, the shielded electric wire 1 includes a plurality of covered electric wires 2 and drain wires in which the welded portions W where both end portions 13 a and 13 b in the width direction of the insulating layer 13 are welded are formed. 3 along the longitudinal direction of the conductor sheet 4 over the entire length. However, in the present invention, as shown in FIG. 10, the welded portion W where both end portions 13 a and 13 b in the width direction of the insulating layer 13 of the shielded wire 1 are welded is the longitudinal direction of the plurality of covered wires 2 and drain wires 3. You may arrange | position at intervals in the direction. In FIG. 10, the same parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the case shown in FIG. 10, the welded portions W where both end portions 13 a and 13 b of the insulating layer 13 are welded are arranged at intervals in the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3. By reducing the number of welding locations W of the sheet 4, the processing time can be reduced. Therefore, work efficiency can be improved.

  Further, in the example shown in FIG. 9, the shielded electric wire 1 ′ is welded at the end portions 13 a, 13 a, 13 b, 13 b in the width direction of the insulating layer 13 of the pair of conductor sheets 4 stacked on each other. W was provided over the entire length of the conductor sheet 4 along the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3.

  However, in the present invention, as shown in FIG. 11, the shielded electric wire 1 has the end portions 13 a and 13 a and the other end portions 13 b and 13 b in the width direction of the insulating layer 13 of the pair of conductor sheets 4 stacked on each other. The welded locations W that are welded may be arranged at intervals in the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3. In FIG. 11, the same parts as those in the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the case shown in FIG. 11, one end portions 13 a, 13 a and the other end portions 13 b, 13 b in the width direction of the insulating layer 13 of the pair of conductor sheets 4 stacked on each other, that is, the end portions 13 a, 13 a, 13 b, 13 b. Since the welding locations W to which the conductors are welded are arranged at intervals in the longitudinal direction of the plurality of covered electric wires 2 and drain wires 3, the welding time W is reduced by reducing the number of welding locations W of the conductor sheet 4. Therefore, the working efficiency can be improved.

  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 which shows the shield electric wire concerning one embodiment of this invention. It is sectional drawing which shows the conductor sheet of the shield wire shown by FIG. It is sectional drawing along the III-III line in FIG. It is a perspective view which shows the ultrasonic welding machine which welds the conductor sheet of the shield wire shown by FIG. It is explanatory drawing which shows the welding location where the conductor sheet of the shield wire shown by FIG. 1 was welded. It is a perspective view which shows the modification of the shield electric wire shown by FIG. It is sectional drawing along the VII-VII line in FIG. It is a perspective view which shows the ultrasonic welding machine which welds the conductor sheet of the shield wire shown by FIG. It is explanatory drawing which shows the welding location where the conductor sheet of the shielded electric wire shown by FIG. 6 was welded. It is explanatory drawing which shows the modification of the welding location shown by FIG. It is explanatory drawing which shows the modification of the welding location shown by FIG.

Explanation of symbols

1, 1 'shielded wire 2 sheathed wire (wire)
3 Drain wire (electric wire)
4 Conductor Sheet 13 Insulating Layer 13a One End 13b Other End 14 Conductor Layer W Welding Location

Claims (6)

A shielded electric wire comprising: at least one electric wire; and a conductor sheet that covers the electric wire and has an insulating insulating layer and a conductive conductor layer laminated on the insulating layer,
The conductor layer is formed narrower than the width of the insulating layer, and is laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer;
The conductor sheet is wound around the outer circumference of the electric wire in a state where the conductor layer is located on the inner side and the insulating layer is located on the outer side, and the both end portions of the insulating layer are overlapped with each other, A shielded electric wire characterized in that both ends are welded together. A shielded electric wire comprising at least one electric wire, and a pair of conductor sheets covering the electric wire and having an insulating insulating layer and a conductive conductor layer laminated on the insulating layer,
The conductor layer of each of the pair of conductor sheets is formed narrower than the width of the insulating layer, and is laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer,
The pair of conductor sheets are overlapped with each other in a state where the conductor layer is located on the inner side and the insulating layer is located on the outer side, sandwiching the electric wire between each other, and the width of the laminated insulating layer. A shielded electric wire characterized in that end portions in a direction are welded to each other.   The welding location where the said both ends of the said insulating layer were welded is provided over the full length of the said conductor sheet along the longitudinal direction of the said electric wire, The Claim 1 or Claim 2 characterized by the above-mentioned. Shielded wire.   3. The shielded electric wire according to claim 1, wherein welding locations where the both end portions of the insulating layer are welded are arranged at intervals in the longitudinal direction of the electric wire. A conductor having at least one electric wire, and an insulating layer and a conductor layer that is formed narrower than the width of the insulating layer and is laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer. In a method for manufacturing a shielded electric wire comprising a sheet,
The conductor sheet is wound around the outer circumference of the electric wire in a state where the conductor layer is located on the inner side and the insulating layer is located on the outer side,
Manufacturing the shielded wire, wherein the both ends of the insulating layer of the conductor sheet are overlapped with each other while moving the wire in the longitudinal direction, and the both ends are welded by ultrasonic welding. Method. A pair having at least one electric wire, and an insulating layer and a conductor layer formed to be narrower than the width of the insulating layer and laminated on the insulating layer so as to expose both end portions in the width direction of the insulating layer. In the manufacturing method of the shielded electric wire provided with the conductor sheet of
While the conductor layer is positioned on the inner side and the insulating layer is positioned on the outer side, the pair of conductor sheets are stacked with the electric wire sandwiched therebetween,
The ends of the pair of conductor sheets in the width direction of the insulating layer are overlapped while moving the electric wires in the longitudinal direction, and the ends are welded by performing ultrasonic welding. A method of manufacturing a shielded wire.

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