WO2021192840A1 - Wire harness - Google Patents

Wire harness Download PDF

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Publication number
WO2021192840A1
WO2021192840A1 PCT/JP2021/007852 JP2021007852W WO2021192840A1 WO 2021192840 A1 WO2021192840 A1 WO 2021192840A1 JP 2021007852 W JP2021007852 W JP 2021007852W WO 2021192840 A1 WO2021192840 A1 WO 2021192840A1
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WO
WIPO (PCT)
Prior art keywords
electric wire
coated electric
wire
shielded
coated
Prior art date
Application number
PCT/JP2021/007852
Other languages
French (fr)
Japanese (ja)
Inventor
弘行 荒川
Original Assignee
住友電装株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 住友電装株式会社 filed Critical 住友電装株式会社
Publication of WO2021192840A1 publication Critical patent/WO2021192840A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/04—Cable-end sealings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs

Definitions

  • This disclosure relates to wire harnesses.
  • a wire harness in which the outside of the electric wire is covered with an exterior member such as a corrugated tube has been known.
  • a wire harness using a shielded electric wire as a countermeasure against electromagnetic noise is known.
  • the shielded electric wire has a structure in which the circumference of the first coated electric wire is covered with an electromagnetic shield member such as a metal braid, and the electromagnetic shield member is covered with a sheath which is an insulating covering member.
  • Patent Document 2 instead of tape winding, a resin-based water blocking agent such as silicone resin is impregnated into the electromagnetic shield member exposed from the end of the sheath and the connection portion between the electromagnetic shield member and the grounding electric wire.
  • a resin-based water blocking agent such as silicone resin is impregnated into the electromagnetic shield member exposed from the end of the sheath and the connection portion between the electromagnetic shield member and the grounding electric wire.
  • the wire harness of the present disclosure includes a shielded electric wire including a first coated electric wire, an electromagnetic shield member covering the periphery of the first coated electric wire, and an insulating sheath covering the electromagnetic shield member, a second core electric wire, and the first. It has a second coated electric wire including a second insulating coating that covers the two-core electric wire, a relay terminal for electrically connecting the shielded electric wire and the second coated electric wire, and an opening, and the shielded electric wire and the said
  • the first coated electric wire of the shielded electric wire includes an exterior member that covers the second coated electric wire and the relay terminal, and a grommet that is attached to the exterior member and covers the opening of the exterior member.
  • the electromagnetic shield member of the shielded electric wire has a second exposed portion exposed from the sheath and the electromagnetic shield member, and the relay terminal has the second exposed portion exposed from the sheath.
  • the second exposed portion and the relay terminal are housed in the exterior member, and the first exposed portion and the second coated electric wire are electrically connected to each other. Is a wire harness that penetrates the grommet without a gap.
  • a wire harness capable of suppressing or reducing water ingress from a peeled portion of a shielded electric wire while providing a second coated electric wire connected to an electromagnetically shielded member of the shielded electric wire. ..
  • FIG. 1 is a front view showing a main part of the wire harness according to the first embodiment.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
  • FIG. 3 is a perspective view showing the grommet constituting the wire harness shown in FIG. 1 as a single item.
  • the wire harness of the present disclosure is (1) A shielded electric wire including a first coated electric wire, an electromagnetic shield member covering the periphery of the first coated electric wire, and an insulating sheath covering the electromagnetic shield member, a second core electric wire, and the second core electric wire. It has a second coated electric wire including a second insulating coating to be coated, a relay terminal for electrically connecting the shielded electric wire and the second coated electric wire, and an opening, and the shielded electric wire and the second coated electric wire.
  • the first coated electric wire of the shielded electric wire is provided with an exterior member that covers the relay terminal and a grommet that is attached to the exterior member and covers the opening of the exterior member.
  • the electromagnetic shield member of the shielded electric wire has a second exposed portion exposed from the shield member, and the relay terminal has the second exposed portion and the first exposed portion.
  • the two-core electric wire is electrically connected, the second exposed portion and the relay terminal are housed in the exterior member, and the first exposed portion and the second coated electric wire are the grommet. It is a wire harness that penetrates without gaps.
  • an electric wire for grounding which is electrically connected to the second exposed portion of the electromagnetic shield member exposed from the sheath on one end side of the shielded electric wire via a relay terminal. It has a second coated electric wire such as. Further, a grommet covering the opening of the exterior member is attached to the opening of the exterior member.
  • the exterior member includes an electromagnetic shield member exposed from the sheath, and a relay terminal that electrically connects the electromagnetic shield member and the second coated electric wire.
  • the electromagnetic shield member exposed from the sheath is connected to the second coated electric wire in the waterproof region inside the exterior member whose opening is covered with the grommet, and the second coated electric wire is passed through the grommet to the outside. It can be projected and grounded.
  • the existing exterior member can be used to improve the insulation and waterproofness of the electromagnetic shield member exposed from the sheath and the relay terminal which is the connecting portion between the electromagnetic shield member and the second coated electric wire.
  • the first coated electric wire and the second coated electric wire exposed from the sheath penetrate the grommet without a gap and protrude to the outside of the exterior member. Therefore, even if water adheres to the first coated electric wire or the second coated electric wire protruding to the outside of the exterior member, it travels through the first coated electric wire or the second coated electric wire to the inside of the grommet (inside the exterior member). It can make it difficult for water to enter. As a result, the water on the relay terminal, which is the connection part of the second coated electric wire, and the water that has penetrated into the inside through the first coated electric wire are between the electromagnetic shield member of the shielded electric wire and the first coated electric wire or the sheath.
  • the grommet has a first through hole through which the first exposed portion penetrates and a second through hole through which the second coated electric wire penetrates, and the outer peripheral surface of the first exposed portion is the first through hole. It is preferable that the outer peripheral surface of the second coated electric wire is in close contact with the inner peripheral surface of the through hole and is in close contact with the inner peripheral surface of the second through hole. The first exposed portion of the first coated electric wire and the outer peripheral surface of the second coated electric wire penetrating the grommet are in close contact with the inner peripheral surfaces of the first through hole and the second through hole of the grommet, respectively. This is because the water stopping property of the grommet can be further improved.
  • the shielded electric wire penetrating the exterior member and the first coated electric wire penetrating the electromagnetic shield member coated on the sheath of the shielded electric wire may be singular or plural, and when a plurality of the first coated electric wires are included.
  • the grommet is provided with a plurality of first through holes through which each first coated electric wire penetrates.
  • the number of the second coated electric wires may be one or more, and when a plurality of the second coated electric wires are included, the grommet is provided with a plurality of second through holes through which each of the second coated electric wires penetrates. Be done.
  • the shielded electric wire is a plurality of electric wires
  • the second coated electric wire is one
  • the relay terminal is each of the second core electric wire of the second coated electric wire and the plurality of shielded electric wires.
  • the second exposed portion is electrically connected together.
  • the second coated electric wire is a grounding electric wire
  • the second exposed portion of a plurality of shielded electric wires can be grounded collectively by using one second coated electric wire, and the wire harness can be assembled to the vehicle. This is because the attachment workability can be improved.
  • the number of waterproof points should be reduced as compared with the case where the second exposed portion of the plurality of shielded electric wires and the individual second coated electric wires are electrically connected and the plurality of second coated electric wires are taken out to the outside and grounded. Can be done.
  • the number of second through holes provided in the grommet and through which the second coated electric wire penetrates can be reduced, the risk of water ingress from the grommet is reduced, and the wire harness is waterproofed. The performance can be further improved.
  • the wire harness 10 electrically connects, for example, a vehicle inverter and a compressor.
  • the wire harness 10 is connected to a connector on the inverter side (not shown) on the left side in FIG. Further, the wire harness 10 is connected to a connector on the compressor side (not shown) on the right side in FIG.
  • the grommet 20 and the exterior member (corrugated tube 16), which will be described later, are shown in vertical sections for the sake of easy viewing of the internal structure.
  • the thickness dimension of the adhesive tape 54, the diameter dimension of the shielded electric wire 12, and the like, which will be described later, are exaggerated for the sake of legibility.
  • the left side in FIG. 1 will be described as the front side, and the right side in FIG. 1 will be described as the rear side. However, it does not always match the direction of the wire harness 10 when it is attached to the vehicle.
  • the wire harness 10 includes a shielded electric wire 12 connected to a connector on the inverter side and a connector on the compressor side.
  • the shielded electric wire 12 includes the first coated electric wire 13.
  • the wire harness 10 includes a second coated electric wire 14 that is electrically connected to an electromagnetic shield member (braided member 24), which will be described later, which constitutes the shielded electric wire 12.
  • the electromagnetic shield member (braided member 24) of the shielded electric wire 12 and the second coated electric wire 14 are electrically connected by a splice terminal 15 as a relay terminal.
  • the shielded electric wire 12, the second coated electric wire 14, and the splice terminal 15 are covered with a corrugated tube 16 as an exterior member.
  • a grommet that suppresses water from entering the inside of the corrugated tube 16 is provided in one end side of the shielded electric wire 12, that is, the opening 18 on the front side on which the connector on the inverter side is connected. 20 is attached.
  • the shielded electric wire 12a and 12b are provided.
  • the number of shielded electric wires is not limited, and may be one or three or more.
  • the shielded electric wire 12 covers the first coated electric wire 13, the braided member 24 as an electromagnetic shield member that covers the periphery of the first coated electric wire 13 and electromagnetically shields the first coated electric wire 13, and the electromagnetic shield member (braided member 24). Includes an insulating sheath 26.
  • the first coated electric wire 13 includes a first core electric wire 28 made of a conductive metal and a first insulating coating 30 that covers the first core electric wire 28.
  • the first insulating coating 30 is, for example, tubular. Further, the first insulating coating 30 may be formed of, for example, a soft synthetic resin or the like.
  • the braided member 24 is, for example, a tubular member formed by braiding a thin metal wire having conductivity. In the initial state before the second coated electric wire 14 is connected to the braided member 24, the braided member 24 covers the circumference of the first coated electric wire 13 over a substantially overall length in the length direction.
  • the braided mode of the thin metal wire in the braided member 24 is not limited. As the braided member 24, a conventionally known braided structure, knitted or woven structure, or the like can be appropriately adopted.
  • the sheath 26 is a cylindrical member made of, for example, a soft synthetic resin. In the initial state before the second coated electric wire 14 is connected to the braided member 24, the sheath 26 covers the first coated electric wire 13 and the braided member 24 over a substantially overall length in the length direction.
  • the sheath 26 is peeled off over a certain length on one end side (front side) of the shielded electric wire 12.
  • the braided member 24 is exposed to the outside from the sheath 26.
  • the exposed portion of the braided member 24 to the outside is the second exposed portion 32.
  • the sheaths 26 and 26 are peeled off in each of the two shielded electric wires 12a and 12b to expose the second exposed portions 32 and 32 in the braided members 24 and 24.
  • the second exposed portions 32 and 32 are folded back to the rear side which is the other end side of the shielded electric wires 12a and 12b.
  • the first coated electric wires 13 and 13 are exposed from the sheaths 26 and 26 and the braided members 24 and 24 on the front side, which is one end side of the two shielded electric wires 12a and 12b.
  • the exposed portions of the first coated electric wires 13 and 13 to the outside are the first exposed portions 34 and 34.
  • ⁇ Splice terminal 15> The rear ends of the folded second exposed portions 32, 32 are electrically connected to the splice terminal 15. That is, the braided members 24, 24 for two circuits are co-pressed to the splice terminal 15. The rear end portions of the folded second exposed portions 32, 32 may be bundled. In short, the second exposed portions 32, 32 (braided members 24, 24) may be collectively electrically connected to the relay terminal (splice terminal 15).
  • the splice terminal 15 is located behind the peeled portion of the sheath 26. Therefore, the splice terminal 15 can be stably positioned inside the corrugated tube 16.
  • the splice terminal 15 can be provided at a position separated from the opening 18 of the corrugated tube 16 to some extent. This reduces the risk that the splice terminal 15 will affect the attachment of the grommet 20 to the opening 18 of the corrugated tube 16. Further, the intermediate portion of the second coated electric wire 14 in the length direction can be inserted into the grommet 20 more stably.
  • the gap between the outer peripheral surface of the second coated electric wire 14 and the grommet 20 can be substantially eliminated. Therefore, the risk of water entering from the insertion portion of the second coated electric wire 14 in the grommet 20 can be effectively reduced.
  • the second coated electric wire 14 includes a second core electric wire 38 having conductivity and a second insulating coating 40 that covers the second core electric wire 38.
  • the second coated electric wire 14 extends to the front side, which is one end side of the shielded electric wire 12. That is, one end of the second coated electric wire 14 is electrically connected to the second exposed portion 32 via a relay terminal (splice terminal 15).
  • the second insulating coating 40 is peeled off to expose the second core electric wire 38.
  • the second core electric wire 38 is electrically connected to the splice terminal 15.
  • the braided members 24 and 24 of the two shielded electric wires 12a and 12b are electrically connected to the one second coated electric wire 14 via the splice terminal 15.
  • the splice terminal 15 electrically connects the second core electric wire 38 of the second coated electric wire 14 and the second exposed portions 32 and 32 of the shielded electric wires 12a and 12b collectively.
  • the other end of the second coated electric wire 14 extends forward.
  • the second coated electric wire 14 is a grounding electric wire. That is, a ground terminal 42 is provided at the other end (front end) of the second coated electric wire 14.
  • the electromagnetic shield member (braided member 24) is grounded by grounding the ground terminal 42 to a high-voltage housing, a vehicle body panel, or the like.
  • the grommet 20 has a substantially tubular shape that covers the main body 44 that covers the opening 18 of the corrugated tube 16 and the outer peripheral side of the front end portion of the corrugated tube 16, as shown in FIG. It is provided with an outer peripheral cylinder portion 46.
  • the grommet 20 is an elastic body made of rubber or an elastomer.
  • the main body portion 44 located in the front and the outer peripheral cylinder portion 46 located in the rear are integrally formed.
  • the main body 44 has a substantially cylindrical shape.
  • the outer peripheral cylinder portion 46 has a substantially cylindrical shape having a larger diameter than the main body portion 44.
  • the outer peripheral surface of the main body 44 and the outer peripheral surface of the outer cylinder 46 are connected by a tapered surface whose diameter gradually increases toward the rear.
  • a circular recess 48 formed by an inner hole of the outer peripheral tubular portion 46 is formed so as to open rearward.
  • the circular recess 48 has a certain depth dimension (front-rear direction dimension).
  • the inner diameter dimension of the circular recess 48 is substantially equal to or slightly smaller than the outer diameter dimension of the corrugated tube 16.
  • the second through hole 52 is formed so as to extend substantially straight in the front-rear direction.
  • the inner diameter dimensions of the first and second through holes 50 and 52 in the single item state of the grommet 20 are the first exposed portion 34 and the second coated electric wire in the first coated electric wire 13 of the shielded electric wire 12, respectively. It is substantially equal to or slightly smaller than the outer diameter dimension of 14.
  • the inner diameter dimensions of the first and second through holes 50 and 52 may be slightly larger than the outer diameter dimensions of the first exposed portion 34 and the second coated electric wire 14 of the first coated electric wire 13.
  • the second exposed portions 32, 32 and the splice terminal 15 of the shielded electric wires 12a, 12b are housed in the corrugated tube 16. Will be done. Further, by inserting the first exposed portions 34, 34 and the second coated electric wires 14 in the first coated electric wires 13 and 13 into the first and second through holes 50, 50, 52, the first exposed portions 34, 34 And the second coated electric wire 14 penetrates the grommet 20 without a gap.
  • the inner peripheral surfaces of the first and second through holes 50, 50, 52 abut on the first exposed portions 34, 34 and the second coated electric wire 14 with zero touch or are slightly expanded toward the outer peripheral side.
  • the inner peripheral surfaces of the first through holes 50, 50 are in close contact with the outer peripheral surfaces of the first exposed portions 34, 34 without any gap.
  • the inner peripheral surface of the second through hole 52 is in close contact with the outer peripheral surface of the second coated electric wire 14 without a gap.
  • the first coated electric wires 13 and 13 and the second coated electric wires 14 located in front of the grommet 20 straddle the front portion of the corrugated tube 16 in FIGS.
  • An adhesive tape 54 indicated by a chain double-dashed line is wrapped inside.
  • the grommet 20 and the corrugated tube 16 are fixed to each other.
  • the displacement of the first coated electric wire 13 and the second coated electric wire 14 can be prevented by wrapping the adhesive tape 54 from the first and second coated electric wires 13, 13, 14 to the corrugated tube 16.
  • the grommet 20 and the exterior member (corrugated tube 16) may be fixed by a binding band or the like instead of or in addition to the adhesive tape 54.
  • the sheaths 26 and 26 on one end side are peeled off to expose the second exposed portions 32 and 32 in the braided members 24 and 24.
  • the second exposed portions 32, 32 are folded back to expose the first exposed portions 34, 34 in the first coated electric wires 13, 13.
  • the second insulating coating 40 is peeled off to expose the second core electric wire 38.
  • the rear ends of the folded second exposed portions 32, 32 and the second core electric wire 38 in the second coated electric wire 14 are electrically connected via the splice terminal 15.
  • the first exposed portions 34, 34 of the first coated electric wires 13, 13 are inserted into the first through holes 50, 50 of the grommet 20 from the rear. Further, the second coated electric wire 14 is inserted into the second through hole 52 of the grommet 20 from the rear.
  • the ground terminal 42 may be fixed to the other end of the second coated electric wire 14 after the second coated electric wire 14 is inserted into the second through hole 52 of the grommet 20.
  • the second coated electric wire 14 to which the ground terminal 42 is fixed may be inserted from the front through the second through hole 52 of the grommet 20.
  • the second exposed portions 32 and 32 and the second coated electric wire 14 are connected to the splice terminal 15 of the second core electric wire 38 by connecting the first exposed portions 34 and 34 and the second coated electric wire 14. It may be after being inserted into the first and second through holes 50, 50, 52 of the grommet 20.
  • the corrugated tube 16 is extrapolated and attached to the shielded wires 12a and 12b from behind. Specifically, the front end portion of the corrugated tube 16 is inserted into the circular recess 48 of the grommet 20 into which the first exposed portions 34, 34 of the first coated electric wires 13 and 13 and the second coated electric wire 14 are inserted. In other words, the opening 18 of the corrugated tube 16 is overlapped with the grommet 20 through which the first exposed portions 34, 34 and the second coated electric wire 14 of the first coated electric wires 13 and 13 are inserted. Cover.
  • the exterior of the corrugated tube 16 with respect to the shielded electric wires 12a and 12b is performed until the peripheral edge portion of the opening 18 of the corrugated tube 16 and the bottom surface of the circular recess 48 of the grommet 20 come into contact with each other. That is, the bottom surface of the circular recess 48 defines the relative position of the grommet 20 and the corrugated tube 16 in the front-rear direction.
  • the second exposed portions 32 and 32 of the braided members 24 and 24 exposed from the sheaths 26 and 26 in the shielded wires 12a and 12b, and their second The connection portion (splice terminal 15 which is a relay terminal) between the exposed portions 32 and 32 and the second core electric wire 38 of the second coated electric wire 14 is housed in the corrugated tube 16. Further, the first exposed portions 34, 34 and the second coated electric wire 14 of the first coated electric wires 13 and 13 project outward from the grommet 20 through the first and second through holes 50, 50 and 52.
  • the adhesive tape 54 is wound around the circular recess 48 of the grommet 20 with the front end portion of the corrugated tube 16 inserted, and the grommet 20 and the corrugated tube 16 are fixed to each other.
  • the connector on the inverter side is connected in front of the shielded electric wires 12a and 12b. Further, a connector on the compressor side is connected behind the shielded electric wires 12a and 12b. Further, the wire harness 10 is attached to the vehicle by grounding the ground terminal 42 to the vehicle body panel or the like.
  • the braided member 24 of the shielded electric wire 12 is electrically connected to the second coated electric wire 14 via the splice terminal 15. That is, the conductive braided member 24 is switched to the second coated electric wire 14 having insulating properties at the connection point by the splice terminal 15. As a result, the conductive second exposed portions 32, 32 and the splice terminal 15 are housed in the corrugated tube 16. Further, the insulating second coated electric wire 14 projects outward from the corrugated tube 16 through the grommet 20. As a result, the insulating properties of the braided member 24 and the splice terminal 15 can be improved.
  • the first and first are provided. 2 It is possible to suppress the intrusion of water through the through holes 50 and 52. That is, for example, when the first exposed portion of the first coated electric wire and the second coated electric wire are inserted into one through hole of the grommet together, a gap is generated between the first exposed portion and the second coated electric wire. , There was a risk of water entering through the gap. However, as in the first embodiment, the first exposed portion 34 and the second coated electric wire 14 are inserted into separate through holes (first and second through holes 50 and 52), so that water can enter. The risk can be reduced. As a result, the waterproofness of the braided member 24 and the splice terminal 15 is also improved.
  • the outer peripheral surfaces of the first exposed portion 34 and the second coated electric wire 14 of the first coated electric wire 13 and the inner peripheral surfaces of the first and second through holes 50 and 52 are in close contact with each other without a gap. There is. Therefore, in order to improve the insulation and waterproofness of the braided member 24 and the splice terminal 15, it is possible to avoid the need for another member that fills the gap. Further, the structure can be simplified and the increase in the number of parts can be avoided.
  • two shielded electric wires 12a and 12b are provided, and the braided members 24 and 24 are electrically connected to one second coated electric wire 14 via the splice terminal 15. There is.
  • the grounding work of the second coated electric wire 14 can be performed more efficiently.
  • an increase in the number of second through holes through which the second coated electric wire is inserted can be suppressed, and the risk of deterioration of insulation and waterproofness through the second through holes can be reduced.
  • the electromagnetic shield member is a braided member 24 made of a thin metal wire, but may be, for example, a metal foil or the like. Further, the electromagnetic shield member may include a drain wire connected to a metal braided tube or a metal foil, and a second coated electric wire (grounding electric wire) is electrically connected to the drain wire. You may be.
  • the inner diameter dimensions of the first and second through holes 50, 50, 52 are the outer diameter dimensions of the first exposed portions 34, 34 and the second coated electric wire 14 in the first coated electric wires 13, 13. It was approximately equal to or slightly smaller than, but may be slightly larger.
  • another member such as an adhesive may be used to fill the gap between the first and second through holes and the first exposed portion and the second coated electric wire.
  • the braided members 24 and 24 of the two shielded electric wires 12a and 12b are electrically connected to the second coated electric wire 14 which is one grounding electric wire via the splice terminal 15.
  • the second coated electric wire may extend from the electromagnetic shield member of each shielded electric wire.
  • the second coated electric wire is electrically connected to the exposed electromagnetic shield member by peeling the sheath of one shielded electric wire, and the first coating is provided. It suffices that the first exposed portion and the second coated electric wire of the electric wire are inserted through the grommet.
  • the other shielded electric wire may be inserted into the grommet without being peeled off.
  • a connection structure or a waterproof structure between a conventionally known electromagnetically shielded member and a second coated electric wire (earthing electric wire) may be separately provided.
  • the second exposed portions 32, 32 of the braided members 24, 24 which are electromagnetic shield members are folded back and connected to the splice terminal 15, but the present invention is not limited to this embodiment. No. That is, for example, when the amount of exposure in the second exposed portion is small, the second coated electric wire (earthing electric wire) may be connected to the electromagnetic shield member in a state of extending forward without being folded back.
  • the splice terminal 15 is adopted as a relay terminal for connecting the electromagnetic shield member (braided member 24) and the second coated electric wire 14, but the specific structure of the relay terminal is particularly limited. It's not a thing. That is, the relay terminal may be any one that electrically connects the electromagnetic shield member and the second coated electric wire.

Abstract

Disclosed is a wire harness having a novel structure in which a second covered wire is provided connected to an electromagnetic shield member of a shielded wire and leakage from a stripped portion of the shielded wire can be reduced.　The wire harness 10 comprises: a shielded wire 12 comprising a first covered wire 13, an electromagnetic shield member 24, and a sheath 26; a second covered wire 14; a relay terminal 15; an exterior coating member 16 that covers the shielded wire 12, the second covered wire 14, and the relay terminal 15; and a grommet 20 that covers an opening 18 in the exterior coating member 16, wherein: a first covered wire 13 comprises a first exposed part 34 exposed from the sheath 26 and the electromagnetic shield member 24; the electromagnetic shield member 24 comprises a second exposed part 32 exposed from the sheath 26; the relay terminal 15 is electrically connected to the second exposed part 32 and a second core wire 38; the second exposed part 32 and the relay terminal 15 are accommodated in the exterior coating member 16; and the first exposed part 34 and the second coated wire 14 pass through the grommet 20 without any gap.

Description

ワイヤハーネスWire harness
　本開示は、ワイヤハーネスに関する。 This disclosure relates to wire harnesses.
　従来から、電線の外側をコルゲートチューブ等の外装部材で覆ったワイヤハーネスが知られており、特に、大電流が供給されるワイヤハーネスにおいては、電磁ノイズ対策としてシールド電線を用いたものが知られている。シールド電線は、第１被覆電線の周囲を金属編組等の電磁シールド部材で覆い、電磁シールド部材を絶縁性の被覆部材であるシースで被覆した構造を有している。 Conventionally, a wire harness in which the outside of the electric wire is covered with an exterior member such as a corrugated tube has been known. In particular, in a wire harness to which a large current is supplied, a wire harness using a shielded electric wire as a countermeasure against electromagnetic noise is known. ing. The shielded electric wire has a structure in which the circumference of the first coated electric wire is covered with an electromagnetic shield member such as a metal braid, and the electromagnetic shield member is covered with a sheath which is an insulating covering member.
　シールド電線を用いたワイヤハーネスにおいては、シールド電線の電磁シールド部材をアース接続する必要がある。例えば、特許文献１には、複数本のシールド電線の一方の端部において、シースの端末を皮剥ぎして電磁シールド部材をそれぞれ露出させ、これら複数の電磁シールド部材を束ねて第２被覆電線であるアース用電線の一方の端末に露出した芯線（第２コア電線）に接続する構造が提案されている。そして、アース用電線の他方の端末に設けられたアース端子を、周辺機器の筐体や車体パネル等へ接地することにより、シールド電線により安定した電磁シールド効果が発揮されるようになっている。 In a wire harness using a shielded electric wire, it is necessary to connect the electromagnetic shield member of the shielded electric wire to the ground. For example, in Patent Document 1, at one end of a plurality of shielded electric wires, the ends of the sheath are peeled off to expose the electromagnetic shield members, and the plurality of electromagnetic shield members are bundled together to form a second coated electric wire. A structure has been proposed in which a core wire (second core wire) exposed to one end of a certain ground wire is connected. Then, by grounding the ground terminal provided on the other terminal of the grounding electric wire to the housing of the peripheral device, the vehicle body panel, or the like, the shielded electric wire exhibits a stable electromagnetic shielding effect.
　ところで、特許文献１の構造では、アース用電線を接続するために複数本のシールド電線のシースの端末が皮剥ぎされて電磁シールド部材が露出している。そこで、複数本のシールド電線を束ねた状態で、シースの端末から露出した電磁シールド部材、さらにはその先端側に突出する第１被覆電線に至る領域を、ビニールテープ等の絶縁性の粘着テープを巻回して結束することにより、露出した電磁シールド部材にテープ巻による絶縁被覆を施している。 By the way, in the structure of Patent Document 1, the terminals of the sheaths of a plurality of shielded electric wires are peeled off in order to connect the grounding electric wires, and the electromagnetic shield member is exposed. Therefore, in a state where a plurality of shielded electric wires are bundled, an insulating adhesive tape such as vinyl tape is applied to the area of the electromagnetic shield member exposed from the end of the sheath and further to the first coated electric wire protruding toward the tip side thereof. By winding and bundling, the exposed electromagnetic shield member is coated with an insulating coating by tape winding.
　テープ巻による絶縁被覆では、束ねられた複数の電線間に隙間が生じていることから、被水の可能性がある部位で使用する際には、何らかの防水対策を施す必要がある。すなわち、特許文献１の構造では、テープ巻部分から突出する複数の第１被覆電線部分が被水すると、第１被覆電線間の隙間を伝ってテープ巻内部に水が浸入し、さらに、電磁シールド部材とシースや第１被覆電線の間の隙間を伝ってシールド電線の他方の端部に他端に設けられたコネクタ等の機器まで水が浸入し、ショート等の問題が発生するおそれがあるからである。 In the insulation coating by tape winding, there is a gap between multiple bundled electric wires, so it is necessary to take some waterproof measures when using it in a part where there is a possibility of being exposed to water. That is, in the structure of Patent Document 1, when a plurality of first coated electric wire portions protruding from the tape winding portion are exposed to water, water infiltrates into the inside of the tape winding through the gap between the first coated electric wires, and further, the electromagnetic shield. This is because water may infiltrate through the gap between the member and the sheath or the first coated electric wire to the device such as the connector provided at the other end of the shielded electric wire, which may cause a problem such as a short circuit. Is.
　そこで、特許文献２では、テープ巻に代えて、シースの端末から露出した電磁シールド部材や、電磁シールド部材とアース用電線の接続部に対して、シリコーン樹脂等の樹脂系止水剤を浸透させることにより構成した止水部を設ける構造が提案されている。 Therefore, in Patent Document 2, instead of tape winding, a resin-based water blocking agent such as silicone resin is impregnated into the electromagnetic shield member exposed from the end of the sheath and the connection portion between the electromagnetic shield member and the grounding electric wire. A structure has been proposed in which a waterproof portion is provided.
特開２０００－２６８８９３号公報Japanese Unexamined Patent Publication No. 2000-268893 特開２００９－２２０６４１号公報JP-A-2009-220641
　ところが、特許文献２の構造では、樹脂系止水剤の浸透が不十分で、電磁シールド部材とシースや第１被覆電線との間に隙間が形成されるおそれがあり、十分な止水性能を発揮できないという問題を内在していた。また、電線に加わる曲げ変形や振動等により、樹脂系止水剤がシースや第１被覆電線の絶縁被覆から剥離して樹脂系止水剤とシースや第１被覆電線等の間にリーク経路が形成されるおそれもあり、止水性能を安定して保持できないという問題も内在していた。 However, in the structure of Patent Document 2, the penetration of the resin-based water blocking agent is insufficient, and there is a possibility that a gap may be formed between the electromagnetic shield member and the sheath or the first coated electric wire, so that sufficient water stopping performance can be obtained. There was an inherent problem of not being able to demonstrate it. In addition, due to bending deformation or vibration applied to the electric wire, the resin-based water blocking agent peels off from the insulating coating of the sheath or the first coated electric wire, and a leak path is created between the resin-based waterproofing agent and the sheath or the first coated electric wire. There is also a possibility that it will be formed, and there is an inherent problem that the water stopping performance cannot be stably maintained.
　そこで、シールド電線の電磁シールド部材に接続された第２被覆電線を備えつつ、シールド電線の皮剥ぎ部分からの浸水を抑えたり、軽減することができる、新規な構造のワイヤハーネスを開示する。 Therefore, we will disclose a wire harness with a new structure that can suppress or reduce water ingress from the peeled part of the shielded wire while providing a second coated wire connected to the electromagnetically shielded member of the shielded wire.
　本開示のワイヤハーネスは、第１被覆電線と前記第１被覆電線の周囲を覆う電磁シールド部材と前記電磁シールド部材を被覆する絶縁性のシースとを含むシールド電線と、第２コア電線と前記第２コア電線を被覆する第２絶縁被覆とを含む第２被覆電線と、前記シールド電線と前記第２被覆電線とを電気的に接続する中継端子と、開口部を有し、前記シールド電線と前記第２被覆電線と前記中継端子とを覆う外装部材と、前記外装部材に取り付けられるとともに、前記外装部材の前記開口部を覆うグロメットと、を備え、前記シールド電線の前記第１被覆電線は、前記シースと前記電磁シールド部材とから露出する第１露出部を有し、前記シールド電線の前記電磁シールド部材は、前記シースから露出する第２露出部を有し、前記中継端子は、前記第２露出部と前記第２コア電線とを電気的に接続しており、前記第２露出部と前記中継端子とは、前記外装部材に収容されており、前記第１露出部と前記第２被覆電線とは、前記グロメットを隙間なく貫通している、ワイヤハーネスである。 The wire harness of the present disclosure includes a shielded electric wire including a first coated electric wire, an electromagnetic shield member covering the periphery of the first coated electric wire, and an insulating sheath covering the electromagnetic shield member, a second core electric wire, and the first. It has a second coated electric wire including a second insulating coating that covers the two-core electric wire, a relay terminal for electrically connecting the shielded electric wire and the second coated electric wire, and an opening, and the shielded electric wire and the said The first coated electric wire of the shielded electric wire includes an exterior member that covers the second coated electric wire and the relay terminal, and a grommet that is attached to the exterior member and covers the opening of the exterior member. The electromagnetic shield member of the shielded electric wire has a second exposed portion exposed from the sheath and the electromagnetic shield member, and the relay terminal has the second exposed portion exposed from the sheath. The second exposed portion and the relay terminal are housed in the exterior member, and the first exposed portion and the second coated electric wire are electrically connected to each other. Is a wire harness that penetrates the grommet without a gap.
　本開示によれば、シールド電線の電磁シールド部材に接続された第２被覆電線を備えつつ、シールド電線の皮剥ぎ部分からの浸水を抑えたり、軽減することができるワイヤハーネスを提供することができる。 According to the present disclosure, it is possible to provide a wire harness capable of suppressing or reducing water ingress from a peeled portion of a shielded electric wire while providing a second coated electric wire connected to an electromagnetically shielded member of the shielded electric wire. ..
図１は、実施形態１に係るワイヤハーネスの要部を示す正面図である。FIG. 1 is a front view showing a main part of the wire harness according to the first embodiment. 図２は、図１におけるＩＩ－ＩＩ断面図である。FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 図３は、図１に示されたワイヤハーネスを構成するグロメットを単品状態で示す斜視図である。FIG. 3 is a perspective view showing the grommet constituting the wire harness shown in FIG. 1 as a single item.
＜本開示の実施形態の説明＞
　最初に、本開示の実施態様を列記して説明する。
　本開示のワイヤハーネスは、
（１）第１被覆電線と前記第１被覆電線の周囲を覆う電磁シールド部材と前記電磁シールド部材を被覆する絶縁性のシースとを含むシールド電線と、第２コア電線と前記第２コア電線を被覆する第２絶縁被覆とを含む第２被覆電線と、前記シールド電線と前記第２被覆電線とを電気的に接続する中継端子と、開口部を有し、前記シールド電線と前記第２被覆電線と前記中継端子とを覆う外装部材と、前記外装部材に取り付けられるとともに、前記外装部材の前記開口部を覆うグロメットと、を備え、前記シールド電線の前記第１被覆電線は、前記シースと前記電磁シールド部材とから露出する第１露出部を有し、前記シールド電線の前記電磁シールド部材は、前記シースから露出する第２露出部を有し、前記中継端子は、前記第２露出部と前記第２コア電線とを電気的に接続しており、前記第２露出部と前記中継端子とは、前記外装部材に収容されており、前記第１露出部と前記第２被覆電線とは、前記グロメットを隙間なく貫通している、ワイヤハーネスである。 <Explanation of Embodiments of the present disclosure>
First, embodiments of the present disclosure will be listed and described.
The wire harness of the present disclosure is
(1) A shielded electric wire including a first coated electric wire, an electromagnetic shield member covering the periphery of the first coated electric wire, and an insulating sheath covering the electromagnetic shield member, a second core electric wire, and the second core electric wire. It has a second coated electric wire including a second insulating coating to be coated, a relay terminal for electrically connecting the shielded electric wire and the second coated electric wire, and an opening, and the shielded electric wire and the second coated electric wire. The first coated electric wire of the shielded electric wire is provided with an exterior member that covers the relay terminal and a grommet that is attached to the exterior member and covers the opening of the exterior member. The electromagnetic shield member of the shielded electric wire has a second exposed portion exposed from the shield member, and the relay terminal has the second exposed portion and the first exposed portion. The two-core electric wire is electrically connected, the second exposed portion and the relay terminal are housed in the exterior member, and the first exposed portion and the second coated electric wire are the grommet. It is a wire harness that penetrates without gaps.
　本開示のワイヤハーネスによれば、シールド電線の一方の端部側において、シースから露出した電磁シールド部材の第２露出部に対して中継端子を介して電気的に接続された、例えばアース用電線等の第２被覆電線を有している。また、外装部材の開口部を覆うグロメットが外装部材の開口部に取り付けられている。外装部材には、シースから露出した電磁シールド部材と、電磁シールド部材と第２被覆電線とを電気的に接続する中継端子が収容されている。これにより、開口部がグロメットで覆われた外装部材の内部という止水領域内で、シースから露出した電磁シールド部材を第２被覆電線に接続し、第２被覆電線をグロメットを貫通して外部に突出させて接地することができる。その結果、既存の外装部材を利用して、シースから露出した電磁シールド部材と、電磁シールド部材と第２被覆電線の接続部分である中継端子の絶縁性や防水性の向上を図ることができる。 According to the wire harness of the present disclosure, for example, an electric wire for grounding, which is electrically connected to the second exposed portion of the electromagnetic shield member exposed from the sheath on one end side of the shielded electric wire via a relay terminal. It has a second coated electric wire such as. Further, a grommet covering the opening of the exterior member is attached to the opening of the exterior member. The exterior member includes an electromagnetic shield member exposed from the sheath, and a relay terminal that electrically connects the electromagnetic shield member and the second coated electric wire. As a result, the electromagnetic shield member exposed from the sheath is connected to the second coated electric wire in the waterproof region inside the exterior member whose opening is covered with the grommet, and the second coated electric wire is passed through the grommet to the outside. It can be projected and grounded. As a result, the existing exterior member can be used to improve the insulation and waterproofness of the electromagnetic shield member exposed from the sheath and the relay terminal which is the connecting portion between the electromagnetic shield member and the second coated electric wire.
　しかも、シースから露出した第１被覆電線と第２被覆電線が、グロメットを隙間なく貫通して外装部材の外部に突出している。それゆえ、仮に外装部材の外部に突出した第１被覆電線や第２被覆電線に水が付着した場合でも、第１被覆電線や第２被覆電線を伝ってグロメットの内部（外装部材の内部）へ水を浸入させ難くすることができる。これにより、第２被覆電線の接続部分である中継端子の被水や、第１被覆電線を伝って内部に浸入した水が、シールド電線の電磁シールド部材と第１被覆電線やシースとの間の隙間を通って、シールド電線の他方の端部側に設けられたコネクタ等の機器にまで至ってショート等の不具合が生じるおそれを低減することができる。このように、シールド電線の他方の端部側に設けられたコネクタ等のショートの問題を、従来構造の如き樹脂系止水剤を用いることなく、そのおそれを低減することができ、シールド電線の電磁シールド部材に接続された第２被覆電線を備えつつ、シールド電線の皮剥ぎ部分からの浸水を抑えたり、軽減することができるワイヤハーネスを提供できる。 Moreover, the first coated electric wire and the second coated electric wire exposed from the sheath penetrate the grommet without a gap and protrude to the outside of the exterior member. Therefore, even if water adheres to the first coated electric wire or the second coated electric wire protruding to the outside of the exterior member, it travels through the first coated electric wire or the second coated electric wire to the inside of the grommet (inside the exterior member). It can make it difficult for water to enter. As a result, the water on the relay terminal, which is the connection part of the second coated electric wire, and the water that has penetrated into the inside through the first coated electric wire are between the electromagnetic shield member of the shielded electric wire and the first coated electric wire or the sheath. It is possible to reduce the possibility that a defect such as a short circuit occurs through the gap and reaches a device such as a connector provided on the other end side of the shielded electric wire. In this way, the problem of short circuit of the connector provided on the other end side of the shielded wire can be reduced without using a resin-based water blocking agent as in the conventional structure, and the shielded wire can be used. It is possible to provide a wire harness capable of suppressing or reducing water ingress from a peeled portion of the shielded electric wire while providing a second coated electric wire connected to the electromagnetically shielded member.
（２）前記グロメットは、前記第１露出部が貫通する第１貫通孔と前記第２被覆電線が貫通する第２貫通孔とを有し、前記第１露出部の外周面は、前記第１貫通孔の内周面と密着しており、前記第２被覆電線の外周面は、前記第２貫通孔の内周面と密着している、ことが好ましい。グロメットを貫通する第１被覆電線の第１露出部と第２被覆電線の外周面がそれぞれグロメットの第１貫通孔と第２貫通孔の内周面に密着していることで、グロメットによるワイヤハーネスの止水性を一層向上させることができるからである。 (2) The grommet has a first through hole through which the first exposed portion penetrates and a second through hole through which the second coated electric wire penetrates, and the outer peripheral surface of the first exposed portion is the first through hole. It is preferable that the outer peripheral surface of the second coated electric wire is in close contact with the inner peripheral surface of the through hole and is in close contact with the inner peripheral surface of the second through hole. The first exposed portion of the first coated electric wire and the outer peripheral surface of the second coated electric wire penetrating the grommet are in close contact with the inner peripheral surfaces of the first through hole and the second through hole of the grommet, respectively. This is because the water stopping property of the grommet can be further improved.
　なお、外装部材を貫通するシールド電線や、シールド電線のシースに被覆された電磁シールド部材を貫通する第１被覆電線は、単数でも複数であってもよく、第１被覆電線が複数含まれる場合には、グロメットには、各第１被覆電線が貫通する複数の第１貫通孔が設けられる。同様に、第２被覆電線は、単数でも複数であってもよく、第２被覆電線が複数含まれる場合には、グロメットには、各第２被覆電線が貫通する複数の第２貫通孔が設けられる。 The shielded electric wire penetrating the exterior member and the first coated electric wire penetrating the electromagnetic shield member coated on the sheath of the shielded electric wire may be singular or plural, and when a plurality of the first coated electric wires are included. The grommet is provided with a plurality of first through holes through which each first coated electric wire penetrates. Similarly, the number of the second coated electric wires may be one or more, and when a plurality of the second coated electric wires are included, the grommet is provided with a plurality of second through holes through which each of the second coated electric wires penetrates. Be done.
（３）前記シールド電線は、複数本であり、前記第２被覆電線は、１本であり、前記中継端子は、前記第２被覆電線の前記第２コア電線と前記複数のシールド電線の各前記第２露出部とを一括して電気的に接続している、ことが好ましい。例えば、第２被覆電線がアース用電線である場合、複数本のシールド電線における第２露出部を１本の第２被覆電線を用いて一括で接地することができ、ワイヤハーネスの車両への組付け作業性の向上を図ることができるからである。また、複数本のシールド電線における第２露出部と個別の第２被覆電線を電気的に接続し、複数の第２被覆電線を外部に取り出して接地する場合に比して、防水箇所を減らすことができる。 (3) The shielded electric wire is a plurality of electric wires, the second coated electric wire is one, and the relay terminal is each of the second core electric wire of the second coated electric wire and the plurality of shielded electric wires. It is preferable that the second exposed portion is electrically connected together. For example, when the second coated electric wire is a grounding electric wire, the second exposed portion of a plurality of shielded electric wires can be grounded collectively by using one second coated electric wire, and the wire harness can be assembled to the vehicle. This is because the attachment workability can be improved. Further, the number of waterproof points should be reduced as compared with the case where the second exposed portion of the plurality of shielded electric wires and the individual second coated electric wires are electrically connected and the plurality of second coated electric wires are taken out to the outside and grounded. Can be done.
　上記（２）と組み合わせる場合には、グロメットに設けられ、且つ第２被覆電線が貫通する第２貫通孔の数を減らすことができ、グロメットからの浸水のリスクが低減されて、ワイヤハーネスの防水性能の一層の向上を図ることができる。 When combined with the above (2), the number of second through holes provided in the grommet and through which the second coated electric wire penetrates can be reduced, the risk of water ingress from the grommet is reduced, and the wire harness is waterproofed. The performance can be further improved.
＜本開示の実施形態の詳細＞
　本開示のワイヤハーネスの具体例を、以下に図面を参照しつつ説明する。なお、本開示は、これらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 <Details of Embodiments of the present disclosure>
Specific examples of the wire harness of the present disclosure will be described below with reference to the drawings. It should be noted that the present disclosure is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
＜実施形態１＞
　以下、本開示の実施形態１について、図１から図３を参照しつつ説明する。ワイヤハーネス１０は、例えば車両のインバータとコンプレッサを電気的に接続するものである。ワイヤハーネス１０は、図１中の左方において図示しないインバータ側のコネクタに接続されている。また、ワイヤハーネス１０は、図１中の右方において図示しないコンプレッサ側のコネクタに接続されている。なお、図面中では、内部構造の見易さのために、後述するグロメット２０および外装部材（コルゲートチューブ１６）を縦断面で示す。また、図面中では、見易さのために、後述する粘着テープ５４の厚さ寸法やシールド電線１２の径寸法等を誇張して示す。さらに、以下の説明では、図１中の左方を前方、図１中の右方を後方として説明する。尤も、車両への取付状態におけるワイヤハーネス１０の方向とは必ずしも一致するものではない。 <Embodiment 1>
Hereinafter, the first embodiment of the present disclosure will be described with reference to FIGS. 1 to 3. The wire harness 10 electrically connects, for example, a vehicle inverter and a compressor. The wire harness 10 is connected to a connector on the inverter side (not shown) on the left side in FIG. Further, the wire harness 10 is connected to a connector on the compressor side (not shown) on the right side in FIG. In the drawings, the grommet 20 and the exterior member (corrugated tube 16), which will be described later, are shown in vertical sections for the sake of easy viewing of the internal structure. Further, in the drawings, the thickness dimension of the adhesive tape 54, the diameter dimension of the shielded electric wire 12, and the like, which will be described later, are exaggerated for the sake of legibility. Further, in the following description, the left side in FIG. 1 will be described as the front side, and the right side in FIG. 1 will be described as the rear side. However, it does not always match the direction of the wire harness 10 when it is attached to the vehicle.
＜ワイヤハーネス１０＞
　ワイヤハーネス１０は、インバータ側のコネクタとコンプレッサ側のコネクタに接続されるシールド電線１２を備えている。シールド電線１２は、第１被覆電線１３を含んでいる。更に、ワイヤハーネス１０は、シールド電線１２を構成する、後述する電磁シールド部材（編組部材２４）に電気的に接続される第２被覆電線１４を備えている。これらシールド電線１２の電磁シールド部材（編組部材２４）と第２被覆電線１４とが、中継端子としてのスプライス端子１５により電気的に接続されている。更にまた、シールド電線１２と第２被覆電線１４とスプライス端子１５とは、外装部材としてのコルゲートチューブ１６で覆われている。そして、コルゲートチューブ１６において、シールド電線１２の一方の端部側、即ちインバータ側のコネクタが接続される側である前側の開口部１８には、コルゲートチューブ１６の内部への水の浸入を抑えるグロメット２０が取り付けられている。実施形態１では、２本のシールド電線１２ａ，１２ｂが設けられている。尤も、シールド電線の数は限定されるものではなく、１本でもよいし、３本以上でもよい。 <Wire harness 10>
The wire harness 10 includes a shielded electric wire 12 connected to a connector on the inverter side and a connector on the compressor side. The shielded electric wire 12 includes the first coated electric wire 13. Further, the wire harness 10 includes a second coated electric wire 14 that is electrically connected to an electromagnetic shield member (braided member 24), which will be described later, which constitutes the shielded electric wire 12. The electromagnetic shield member (braided member 24) of the shielded electric wire 12 and the second coated electric wire 14 are electrically connected by a splice terminal 15 as a relay terminal. Furthermore, the shielded electric wire 12, the second coated electric wire 14, and the splice terminal 15 are covered with a corrugated tube 16 as an exterior member. Then, in the corrugated tube 16, a grommet that suppresses water from entering the inside of the corrugated tube 16 is provided in one end side of the shielded electric wire 12, that is, the opening 18 on the front side on which the connector on the inverter side is connected. 20 is attached. In the first embodiment, two shielded electric wires 12a and 12b are provided. However, the number of shielded electric wires is not limited, and may be one or three or more.
＜シールド電線１２＞
　シールド電線１２は、第１被覆電線１３と、第１被覆電線１３の周囲を覆い第１被覆電線１３を電磁シールドする電磁シールド部材としての編組部材２４と、電磁シールド部材（編組部材２４）を被覆する絶縁性のシース２６とを含んでいる。 <Shielded wire 12>
The shielded electric wire 12 covers the first coated electric wire 13, the braided member 24 as an electromagnetic shield member that covers the periphery of the first coated electric wire 13 and electromagnetically shields the first coated electric wire 13, and the electromagnetic shield member (braided member 24). Includes an insulating sheath 26.
　第１被覆電線１３は、導電性を有する金属製の第１コア電線２８と、当該第１コア電線２８を被覆する第１絶縁被覆３０とを含んでいる。第１絶縁被覆３０は、例えばチューブ状である。また、第１絶縁被覆３０は、例えば軟質の合成樹脂等により形成され得る。 The first coated electric wire 13 includes a first core electric wire 28 made of a conductive metal and a first insulating coating 30 that covers the first core electric wire 28. The first insulating coating 30 is, for example, tubular. Further, the first insulating coating 30 may be formed of, for example, a soft synthetic resin or the like.
　編組部材２４は、例えば導電性を有する金属製の細線を編組することによって形成された筒状の部材である。第２被覆電線１４が編組部材２４に接続される前の初期状態では、編組部材２４は、第１被覆電線１３の周囲を長さ方向の略全長に亘って覆っている。なお、編組部材２４における金属製の細線の編組態様は限定されるものではない。編組部材２４としては、従来公知の編組構造や編織構造等が適宜に採用され得る。 The braided member 24 is, for example, a tubular member formed by braiding a thin metal wire having conductivity. In the initial state before the second coated electric wire 14 is connected to the braided member 24, the braided member 24 covers the circumference of the first coated electric wire 13 over a substantially overall length in the length direction. The braided mode of the thin metal wire in the braided member 24 is not limited. As the braided member 24, a conventionally known braided structure, knitted or woven structure, or the like can be appropriately adopted.
　シース２６は、例えば軟質の合成樹脂からなる筒状の部材である。編組部材２４に第２被覆電線１４が接続される前の初期状態では、シース２６は、第１被覆電線１３および編組部材２４を長さ方向の略全長に亘って被覆している。 The sheath 26 is a cylindrical member made of, for example, a soft synthetic resin. In the initial state before the second coated electric wire 14 is connected to the braided member 24, the sheath 26 covers the first coated electric wire 13 and the braided member 24 over a substantially overall length in the length direction.
　実施形態１では、シールド電線１２の一方の端部側（前側）において、シース２６がある程度の長さに亘って皮剥ぎされている。これにより、編組部材２４がシース２６から外部に露出している。この編組部材２４の外部への露出部分が、第２露出部３２である。特に、実施形態１では、２本のシールド電線１２ａ，１２ｂのそれぞれにおいてシース２６，２６が皮剥ぎされて編組部材２４，２４における第２露出部３２，３２が露出している。 In the first embodiment, the sheath 26 is peeled off over a certain length on one end side (front side) of the shielded electric wire 12. As a result, the braided member 24 is exposed to the outside from the sheath 26. The exposed portion of the braided member 24 to the outside is the second exposed portion 32. In particular, in the first embodiment, the sheaths 26 and 26 are peeled off in each of the two shielded electric wires 12a and 12b to expose the second exposed portions 32 and 32 in the braided members 24 and 24.
　また、第２露出部３２，３２は、シールド電線１２ａ，１２ｂの他方の端部側である後側に折り返されている。これにより、２本のシールド電線１２ａ，１２ｂの一方の端部側である前側において、第１被覆電線１３，１３がシース２６，２６および編組部材２４，２４から露出している。この第１被覆電線１３，１３の外部への露出部分が、第１露出部３４，３４である。 Further, the second exposed portions 32 and 32 are folded back to the rear side which is the other end side of the shielded electric wires 12a and 12b. As a result, the first coated electric wires 13 and 13 are exposed from the sheaths 26 and 26 and the braided members 24 and 24 on the front side, which is one end side of the two shielded electric wires 12a and 12b. The exposed portions of the first coated electric wires 13 and 13 to the outside are the first exposed portions 34 and 34.
＜スプライス端子１５＞
　折り返された第２露出部３２，３２における後端部が、スプライス端子１５に電気的に接続されている。即ち、２回路分の編組部材２４，２４が、スプライス端子１５へ共圧されている。なお、折り返された第２露出部３２，３２における後端部は束ねられてもよい。要するに、第２露出部３２，３２（編組部材２４，２４）は、まとめて中継端子（スプライス端子１５）に電気的に接続されてもよい。 <Splice terminal 15>
The rear ends of the folded second exposed portions 32, 32 are electrically connected to the splice terminal 15. That is, the braided members 24, 24 for two circuits are co-pressed to the splice terminal 15. The rear end portions of the folded second exposed portions 32, 32 may be bundled. In short, the second exposed portions 32, 32 (braided members 24, 24) may be collectively electrically connected to the relay terminal (splice terminal 15).
　実施形態１では、スプライス端子１５が、シース２６において皮剥ぎされた部分よりも後方に位置している。それ故、スプライス端子１５をコルゲートチューブ１６の内部に安定して位置させることができる。特に、後側に折り返された第２露出部３２，３２の後端部にスプライス端子１５を設けることで、スプライス端子１５をコルゲートチューブ１６の開口部１８からある程度離隔した位置に設けることができる。これにより、スプライス端子１５が、コルゲートチューブ１６の開口部１８へのグロメット２０の取付けに際して影響を及ぼすおそれが低減される。また、第２被覆電線１４の長さ方向中間部分をより安定してグロメット２０に挿通させることができる。この結果、後述するように、第２被覆電線１４の外周面とグロメット２０との隙間を略なくすことができる。それ故、グロメット２０における第２被覆電線１４の挿通箇所から水が浸入するおそれが効果的に低減され得る。 In the first embodiment, the splice terminal 15 is located behind the peeled portion of the sheath 26. Therefore, the splice terminal 15 can be stably positioned inside the corrugated tube 16. In particular, by providing the splice terminal 15 at the rear end of the second exposed portions 32, 32 folded back, the splice terminal 15 can be provided at a position separated from the opening 18 of the corrugated tube 16 to some extent. This reduces the risk that the splice terminal 15 will affect the attachment of the grommet 20 to the opening 18 of the corrugated tube 16. Further, the intermediate portion of the second coated electric wire 14 in the length direction can be inserted into the grommet 20 more stably. As a result, as will be described later, the gap between the outer peripheral surface of the second coated electric wire 14 and the grommet 20 can be substantially eliminated. Therefore, the risk of water entering from the insertion portion of the second coated electric wire 14 in the grommet 20 can be effectively reduced.
＜第２被覆電線１４＞
　第２被覆電線１４は、導電性を有する第２コア電線３８と、当該第２コア電線３８を被覆する第２絶縁被覆４０とを含んでいる。第２被覆電線１４は、シールド電線１２の一方の端部側である前側に延び出している。即ち、第２被覆電線１４の一方の端部が、第２露出部３２に中継端子（スプライス端子１５）を介して電気的に接続されている。具体的には、第２被覆電線１４の一方の端部では、第２絶縁被覆４０が剥がされて第２コア電線３８が露出している。この第２コア電線３８がスプライス端子１５に電気的に接続されている。これにより、２本のシールド電線１２ａ，１２ｂにおける編組部材２４，２４が、スプライス端子１５を介して１本の第２被覆電線１４に電気的に接続されている。換言すれば、スプライス端子１５は、第２被覆電線１４の第２コア電線３８と、シールド電線１２ａ，１２ｂにおける第２露出部３２，３２とを一括して電気的に接続している。そして、この第２被覆電線１４の他方の端部が前方に延び出している。実施形態１では、第２被覆電線１４は、アース用電線である。即ち、第２被覆電線１４の他方の端部（前端部）にはアース端子４２が設けられている。アース端子４２が高圧用の筐体や車体パネル等に接地されることで、電磁シールド部材（編組部材２４）がアース接続される。 <Second coated electric wire 14>
The second coated electric wire 14 includes a second core electric wire 38 having conductivity and a second insulating coating 40 that covers the second core electric wire 38. The second coated electric wire 14 extends to the front side, which is one end side of the shielded electric wire 12. That is, one end of the second coated electric wire 14 is electrically connected to the second exposed portion 32 via a relay terminal (splice terminal 15). Specifically, at one end of the second coated electric wire 14, the second insulating coating 40 is peeled off to expose the second core electric wire 38. The second core electric wire 38 is electrically connected to the splice terminal 15. As a result, the braided members 24 and 24 of the two shielded electric wires 12a and 12b are electrically connected to the one second coated electric wire 14 via the splice terminal 15. In other words, the splice terminal 15 electrically connects the second core electric wire 38 of the second coated electric wire 14 and the second exposed portions 32 and 32 of the shielded electric wires 12a and 12b collectively. Then, the other end of the second coated electric wire 14 extends forward. In the first embodiment, the second coated electric wire 14 is a grounding electric wire. That is, a ground terminal 42 is provided at the other end (front end) of the second coated electric wire 14. The electromagnetic shield member (braided member 24) is grounded by grounding the ground terminal 42 to a high-voltage housing, a vehicle body panel, or the like.
＜グロメット２０＞
　グロメット２０は、組み付け前の単品状態が図３に示されているように、コルゲートチューブ１６の開口部１８を覆蓋する本体部４４と、コルゲートチューブ１６の前端部分の外周側を覆う略筒形状の外周筒部４６とを備えている。グロメット２０は、ゴムやエラストマからなる弾性体である。グロメット２０は、前方に位置する本体部４４と後方に位置する外周筒部４６とが一体的に形成されている。 <Grommet 20>
As shown in FIG. 3, the grommet 20 has a substantially tubular shape that covers the main body 44 that covers the opening 18 of the corrugated tube 16 and the outer peripheral side of the front end portion of the corrugated tube 16, as shown in FIG. It is provided with an outer peripheral cylinder portion 46. The grommet 20 is an elastic body made of rubber or an elastomer. In the grommet 20, the main body portion 44 located in the front and the outer peripheral cylinder portion 46 located in the rear are integrally formed.
　実施形態１では、本体部４４が略円柱形状である。また、外周筒部４６は、本体部４４よりも大径な略円筒形状である。これら本体部４４の外周面と外周筒部４６の外周面とが、後方に向かって次第に拡径するテーパ面によって接続されている。更に、グロメット２０の後端面には、外周筒部４６の内孔によって形成された円形凹部４８が、後方に開口して形成されている。この円形凹部４８は、ある程度の深さ寸法（前後方向寸法）を有している。また、円形凹部４８の内径寸法が、コルゲートチューブ１６の外径寸法と略等しいか僅かに小さくされている。 In the first embodiment, the main body 44 has a substantially cylindrical shape. Further, the outer peripheral cylinder portion 46 has a substantially cylindrical shape having a larger diameter than the main body portion 44. The outer peripheral surface of the main body 44 and the outer peripheral surface of the outer cylinder 46 are connected by a tapered surface whose diameter gradually increases toward the rear. Further, on the rear end surface of the grommet 20, a circular recess 48 formed by an inner hole of the outer peripheral tubular portion 46 is formed so as to open rearward. The circular recess 48 has a certain depth dimension (front-rear direction dimension). Further, the inner diameter dimension of the circular recess 48 is substantially equal to or slightly smaller than the outer diameter dimension of the corrugated tube 16.
　更にまた、本体部４４には、シールド電線１２においてシース２６および編組部材２４から露出した第１被覆電線１３における第１露出部３４が貫通する第１貫通孔５０と、第２被覆電線１４が貫通する第２貫通孔５２とが、何れも前後方向に略ストレートに延びて形成されている。実施形態１では、２本のシールド電線１２ａ，１２ｂが設けられていることから、第１貫通孔５０が２つ形成されている。更に、実施形態１では、グロメット２０の単品状態におけるこれら第１および第２貫通孔５０，５２の内径寸法は、それぞれシールド電線１２の第１被覆電線１３における第１露出部３４および第２被覆電線１４の外径寸法と略等しいか僅かに小さくされている。尤も、第１および第２貫通孔５０，５２の内径寸法は、第１被覆電線１３の第１露出部３４および第２被覆電線１４の外径寸法よりも僅かに大きくされてもよい。 Furthermore, the first through hole 50 through which the first exposed portion 34 of the first coated electric wire 13 exposed from the sheath 26 and the braided member 24 of the shielded electric wire 12 penetrates and the second coated electric wire 14 penetrate through the main body portion 44. The second through hole 52 is formed so as to extend substantially straight in the front-rear direction. In the first embodiment, since the two shielded electric wires 12a and 12b are provided, two first through holes 50 are formed. Further, in the first embodiment, the inner diameter dimensions of the first and second through holes 50 and 52 in the single item state of the grommet 20 are the first exposed portion 34 and the second coated electric wire in the first coated electric wire 13 of the shielded electric wire 12, respectively. It is substantially equal to or slightly smaller than the outer diameter dimension of 14. However, the inner diameter dimensions of the first and second through holes 50 and 52 may be slightly larger than the outer diameter dimensions of the first exposed portion 34 and the second coated electric wire 14 of the first coated electric wire 13.
　これにより、後述するようにグロメット２０をコルゲートチューブ１６の開口部１８を覆った状態で取り付けた際に、シールド電線１２ａ，１２ｂの第２露出部３２，３２およびスプライス端子１５がコルゲートチューブ１６に収容される。また、第１および第２貫通孔５０，５０，５２に第１被覆電線１３，１３における第１露出部３４，３４および第２被覆電線１４が挿通されることで、第１露出部３４，３４および第２被覆電線１４がグロメット２０を隙間なく貫通するようになっている。実施形態１では、第１および第２貫通孔５０，５０，５２の内周面が、第１露出部３４，３４および第２被覆電線１４にゼロタッチで当接するか僅かに外周側へ押し広げられる。これにより、第１貫通孔５０，５０の内周面が、第１露出部３４，３４の外周面に対して隙間なく密着するようになっている。また、第２貫通孔５２の内周面が、第２被覆電線１４の外周面に対して隙間なく密着するようになっている。 As a result, when the grommet 20 is attached while covering the opening 18 of the corrugated tube 16 as described later, the second exposed portions 32, 32 and the splice terminal 15 of the shielded electric wires 12a, 12b are housed in the corrugated tube 16. Will be done. Further, by inserting the first exposed portions 34, 34 and the second coated electric wires 14 in the first coated electric wires 13 and 13 into the first and second through holes 50, 50, 52, the first exposed portions 34, 34 And the second coated electric wire 14 penetrates the grommet 20 without a gap. In the first embodiment, the inner peripheral surfaces of the first and second through holes 50, 50, 52 abut on the first exposed portions 34, 34 and the second coated electric wire 14 with zero touch or are slightly expanded toward the outer peripheral side. .. As a result, the inner peripheral surfaces of the first through holes 50, 50 are in close contact with the outer peripheral surfaces of the first exposed portions 34, 34 without any gap. Further, the inner peripheral surface of the second through hole 52 is in close contact with the outer peripheral surface of the second coated electric wire 14 without a gap.
　なお、実施形態１では、グロメット２０の外周面において、グロメット２０よりも前方に位置する第１被覆電線１３，１３および第２被覆電線１４からコルゲートチューブ１６の前方部分に跨って、図１，２中に二点鎖線で示される粘着テープ５４が巻き付けられている。これにより、グロメット２０とコルゲートチューブ１６とが相互に固定される。それだけでなく、第１および第２被覆電線１３，１３，１４からコルゲートチューブ１６にかけて粘着テープ５４が巻き付けられることで、第１被覆電線１３および第２被覆電線１４の変位も阻止され得る。なお、グロメット２０と外装部材（コルゲートチューブ１６）との固定は、粘着テープ５４に代えて、又は加えて、結束バンド等であってもよい。 In the first embodiment, on the outer peripheral surface of the grommet 20, the first coated electric wires 13 and 13 and the second coated electric wires 14 located in front of the grommet 20 straddle the front portion of the corrugated tube 16 in FIGS. An adhesive tape 54 indicated by a chain double-dashed line is wrapped inside. As a result, the grommet 20 and the corrugated tube 16 are fixed to each other. Not only that, the displacement of the first coated electric wire 13 and the second coated electric wire 14 can be prevented by wrapping the adhesive tape 54 from the first and second coated electric wires 13, 13, 14 to the corrugated tube 16. The grommet 20 and the exterior member (corrugated tube 16) may be fixed by a binding band or the like instead of or in addition to the adhesive tape 54.
＜ワイヤハーネス１０の組み付け工程＞
　続いて、ワイヤハーネス１０の組み付け工程の一例について説明する。ワイヤハーネス１０の組み付け工程は、以下の記載に限定されない。 <Assembly process of wire harness 10>
Subsequently, an example of the assembly process of the wire harness 10 will be described. The assembly process of the wire harness 10 is not limited to the following description.
　先ず、２本のシールド電線１２ａ，１２ｂにおいて一方の端部側（前側）のシース２６，２６を皮剥ぎして編組部材２４，２４における第２露出部３２，３２を露出させる。続いて、第２露出部３２，３２を後方へ折り返して、第１被覆電線１３，１３における第１露出部３４，３４を露出させる。また、第２被覆電線１４の一方の端部において、第２絶縁被覆４０を剥いで、第２コア電線３８を露出させる。そして、折り返した第２露出部３２，３２の後端部と第２被覆電線１４における第２コア電線３８とを、スプライス端子１５を介して電気的に接続する。その後、グロメット２０の第１貫通孔５０，５０に第１被覆電線１３，１３における第１露出部３４，３４を後方から挿通する。また、グロメット２０の第２貫通孔５２に第２被覆電線１４を後方から挿通する。 First, in the two shielded electric wires 12a and 12b, the sheaths 26 and 26 on one end side (front side) are peeled off to expose the second exposed portions 32 and 32 in the braided members 24 and 24. Subsequently, the second exposed portions 32, 32 are folded back to expose the first exposed portions 34, 34 in the first coated electric wires 13, 13. Further, at one end of the second coated electric wire 14, the second insulating coating 40 is peeled off to expose the second core electric wire 38. Then, the rear ends of the folded second exposed portions 32, 32 and the second core electric wire 38 in the second coated electric wire 14 are electrically connected via the splice terminal 15. After that, the first exposed portions 34, 34 of the first coated electric wires 13, 13 are inserted into the first through holes 50, 50 of the grommet 20 from the rear. Further, the second coated electric wire 14 is inserted into the second through hole 52 of the grommet 20 from the rear.
　なお、アース端子４２は、第２被覆電線１４をグロメット２０の第２貫通孔５２に挿通した後、第２被覆電線１４の他方の端部に固着されてもよい。或いは、アース端子４２が固着された第２被覆電線１４が、グロメット２０の第２貫通孔５２に対して前方から挿通されてもよい。また、編組部材２４，２４における第２露出部３２，３２および第２被覆電線１４における第２コア電線３８のスプライス端子１５への接続は、第１露出部３４，３４および第２被覆電線１４をグロメット２０の第１および第２貫通孔５０，５０，５２へ挿通した後であってもよい。 The ground terminal 42 may be fixed to the other end of the second coated electric wire 14 after the second coated electric wire 14 is inserted into the second through hole 52 of the grommet 20. Alternatively, the second coated electric wire 14 to which the ground terminal 42 is fixed may be inserted from the front through the second through hole 52 of the grommet 20. Further, in the braided members 24 and 24, the second exposed portions 32 and 32 and the second coated electric wire 14 are connected to the splice terminal 15 of the second core electric wire 38 by connecting the first exposed portions 34 and 34 and the second coated electric wire 14. It may be after being inserted into the first and second through holes 50, 50, 52 of the grommet 20.
　次に、シールド電線１２ａ，１２ｂに対して後方からコルゲートチューブ１６を外挿装着する。具体的には、第１被覆電線１３，１３の第１露出部３４，３４および第２被覆電線１４が挿通されたグロメット２０の円形凹部４８に対して、コルゲートチューブ１６の前端部分を差し入れる。換言すれば、コルゲートチューブ１６の開口部１８に対して、第１被覆電線１３，１３の第１露出部３４，３４および第２被覆電線１４が挿通されたグロメット２０を重ね合わせて、開口部１８を覆蓋する。このシールド電線１２ａ，１２ｂに対するコルゲートチューブ１６の外装は、コルゲートチューブ１６の開口部１８の周縁部分と、グロメット２０の円形凹部４８の底面とが当接するまで行われる。即ち、円形凹部４８の底面により、グロメット２０とコルゲートチューブ１６との前後方向の相対位置が規定されるようになっている。 Next, the corrugated tube 16 is extrapolated and attached to the shielded wires 12a and 12b from behind. Specifically, the front end portion of the corrugated tube 16 is inserted into the circular recess 48 of the grommet 20 into which the first exposed portions 34, 34 of the first coated electric wires 13 and 13 and the second coated electric wire 14 are inserted. In other words, the opening 18 of the corrugated tube 16 is overlapped with the grommet 20 through which the first exposed portions 34, 34 and the second coated electric wire 14 of the first coated electric wires 13 and 13 are inserted. Cover. The exterior of the corrugated tube 16 with respect to the shielded electric wires 12a and 12b is performed until the peripheral edge portion of the opening 18 of the corrugated tube 16 and the bottom surface of the circular recess 48 of the grommet 20 come into contact with each other. That is, the bottom surface of the circular recess 48 defines the relative position of the grommet 20 and the corrugated tube 16 in the front-rear direction.
　上記のようにコルゲートチューブ１６をシールド電線１２ａ，１２ｂに外装することにより、シールド電線１２ａ，１２ｂにおいてシース２６，２６から露出した編組部材２４，２４の第２露出部３２，３２、およびこれら第２露出部３２，３２と第２被覆電線１４の第２コア電線３８との接続部分（中継端子であるスプライス端子１５）がコルゲートチューブ１６に収容される。また、第１被覆電線１３，１３における第１露出部３４，３４および第２被覆電線１４が、第１および第２貫通孔５０，５０，５２を通じてグロメット２０から外方へ突出する。 By exteriorizing the corrugated tube 16 to the shielded wires 12a and 12b as described above, the second exposed portions 32 and 32 of the braided members 24 and 24 exposed from the sheaths 26 and 26 in the shielded wires 12a and 12b, and their second The connection portion (splice terminal 15 which is a relay terminal) between the exposed portions 32 and 32 and the second core electric wire 38 of the second coated electric wire 14 is housed in the corrugated tube 16. Further, the first exposed portions 34, 34 and the second coated electric wire 14 of the first coated electric wires 13 and 13 project outward from the grommet 20 through the first and second through holes 50, 50 and 52.
　そして、グロメット２０の円形凹部４８にコルゲートチューブ１６の前端部分を差し入れた状態で粘着テープ５４を巻き付けて、グロメット２０とコルゲートチューブ１６とを相互に固定する。 Then, the adhesive tape 54 is wound around the circular recess 48 of the grommet 20 with the front end portion of the corrugated tube 16 inserted, and the grommet 20 and the corrugated tube 16 are fixed to each other.
　上記の如き組み付け工程により形成されたワイヤハーネス１０において、シールド電線１２ａ，１２ｂの前方にインバータ側のコネクタが接続される。また、シールド電線１２ａ，１２ｂの後方にコンプレッサ側のコネクタが接続される。更に、アース端子４２が車体パネル等にアース接続されることで、ワイヤハーネス１０が車両に装着される。 In the wire harness 10 formed by the assembly process as described above, the connector on the inverter side is connected in front of the shielded electric wires 12a and 12b. Further, a connector on the compressor side is connected behind the shielded electric wires 12a and 12b. Further, the wire harness 10 is attached to the vehicle by grounding the ground terminal 42 to the vehicle body panel or the like.
　以上の如き構造とされたワイヤハーネス１０では、シールド電線１２における編組部材２４がスプライス端子１５を介して第２被覆電線１４に電気的に接続されている。即ち、導電性を有する編組部材２４が、スプライス端子１５による接続箇所において絶縁性を有する第２被覆電線１４に切り替えられている。これにより、導電性を有する第２露出部３２，３２やスプライス端子１５がコルゲートチューブ１６に収容される。また、絶縁性を有する第２被覆電線１４はグロメット２０を通じてコルゲートチューブ１６の外方に突出している。この結果、編組部材２４およびスプライス端子１５の絶縁性が向上され得る。 In the wire harness 10 having the above structure, the braided member 24 of the shielded electric wire 12 is electrically connected to the second coated electric wire 14 via the splice terminal 15. That is, the conductive braided member 24 is switched to the second coated electric wire 14 having insulating properties at the connection point by the splice terminal 15. As a result, the conductive second exposed portions 32, 32 and the splice terminal 15 are housed in the corrugated tube 16. Further, the insulating second coated electric wire 14 projects outward from the corrugated tube 16 through the grommet 20. As a result, the insulating properties of the braided member 24 and the splice terminal 15 can be improved.
　また、第１被覆電線１３の第１露出部３４および第２被覆電線１４と、グロメット２０の第１および第２貫通孔５０，５２との間に隙間が設けられないことから、第１および第２貫通孔５０，５２を通じての水の浸入を抑えることができる。即ち、例えば第１被覆電線の第１露出部と第２被覆電線をまとめてグロメットの１つの貫通孔に挿通させる場合には、第１露出部と第２被覆電線との間に隙間が生じて、当該隙間を通じて水が浸入するおそれがあった。しかしながら、実施形態１のように、第１露出部３４と第２被覆電線１４とがそれぞれ別個の貫通孔（第１および第２貫通孔５０，５２）に挿通されることで、水の浸入のおそれが低減され得る。これにより、編組部材２４およびスプライス端子１５の防水性も向上される。 Further, since no gap is provided between the first exposed portion 34 and the second coated electric wire 14 of the first coated electric wire 13 and the first and second through holes 50 and 52 of the grommet 20, the first and first are provided. 2 It is possible to suppress the intrusion of water through the through holes 50 and 52. That is, for example, when the first exposed portion of the first coated electric wire and the second coated electric wire are inserted into one through hole of the grommet together, a gap is generated between the first exposed portion and the second coated electric wire. , There was a risk of water entering through the gap. However, as in the first embodiment, the first exposed portion 34 and the second coated electric wire 14 are inserted into separate through holes (first and second through holes 50 and 52), so that water can enter. The risk can be reduced. As a result, the waterproofness of the braided member 24 and the splice terminal 15 is also improved.
　特に、実施形態１では、第１被覆電線１３の第１露出部３４および第２被覆電線１４の外周面と、第１および第２貫通孔５０，５２の内周面とが隙間なく密着している。それ故、上記編組部材２４およびスプライス端子１５の絶縁性および防水性の向上に際して、隙間を埋めるような他部材を必要とすることが回避される。更に、構造の簡素化が図られたり、部品点数の増加が回避され得る。 In particular, in the first embodiment, the outer peripheral surfaces of the first exposed portion 34 and the second coated electric wire 14 of the first coated electric wire 13 and the inner peripheral surfaces of the first and second through holes 50 and 52 are in close contact with each other without a gap. There is. Therefore, in order to improve the insulation and waterproofness of the braided member 24 and the splice terminal 15, it is possible to avoid the need for another member that fills the gap. Further, the structure can be simplified and the increase in the number of parts can be avoided.
　また、実施形態１では、２本のシールド電線１２ａ，１２ｂが設けられており、それぞれの編組部材２４，２４がスプライス端子１５を介して１本の第２被覆電線１４に電気的に接続されている。これにより、第２被覆電線１４の接地作業をより効率的に行うことができる。それに加えて、第２被覆電線が挿通される第２貫通孔の数の増加が抑えられて、第２貫通孔を通じての絶縁性や防水性の低下のおそれが低減され得る。 Further, in the first embodiment, two shielded electric wires 12a and 12b are provided, and the braided members 24 and 24 are electrically connected to one second coated electric wire 14 via the splice terminal 15. There is. As a result, the grounding work of the second coated electric wire 14 can be performed more efficiently. In addition, an increase in the number of second through holes through which the second coated electric wire is inserted can be suppressed, and the risk of deterioration of insulation and waterproofness through the second through holes can be reduced.
＜他の実施形態＞
　本明細書に記載された技術は上記記述および図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本明細書に記載された技術の技術的範囲に含まれる。 <Other embodiments>
The techniques described herein are not limited to the embodiments described above and in the drawings, and for example, the following embodiments are also included in the technical scope of the techniques described herein.
（１）前記実施形態では、電磁シールド部材が、金属製の細線による編組部材２４とされていたが、例えば金属箔等であってもよい。また、電磁シールド部材は、金属製の編組チューブや金属箔に接続されるドレン線を含んでいてもよく、ドレン線に第２被覆電線（アース用電線）が電気的に接続されるようになっていてもよい。 (1) In the above embodiment, the electromagnetic shield member is a braided member 24 made of a thin metal wire, but may be, for example, a metal foil or the like. Further, the electromagnetic shield member may include a drain wire connected to a metal braided tube or a metal foil, and a second coated electric wire (grounding electric wire) is electrically connected to the drain wire. You may be.
（２）前記実施形態では、第１および第２貫通孔５０，５０，５２の内径寸法が、第１被覆電線１３，１３における第１露出部３４，３４および第２被覆電線１４の外径寸法と略等しいか僅かに小さくされていたが、僅かに大きくされてもよい。例えば、接着剤等の他部材を採用して、第１および第２貫通孔と、第１露出部および第２被覆電線との隙間を埋めてもよい。 (2) In the above embodiment, the inner diameter dimensions of the first and second through holes 50, 50, 52 are the outer diameter dimensions of the first exposed portions 34, 34 and the second coated electric wire 14 in the first coated electric wires 13, 13. It was approximately equal to or slightly smaller than, but may be slightly larger. For example, another member such as an adhesive may be used to fill the gap between the first and second through holes and the first exposed portion and the second coated electric wire.
（３）前記実施形態では、２本のシールド電線１２ａ，１２ｂにおける編組部材２４，２４がスプライス端子１５を介して１本のアース用電線とされた第２被覆電線１４に電気的に接続されていたが、複数のシールド電線が設けられる場合、各シールド電線の電磁シールド部材からそれぞれ第２被覆電線（アース用電線）が延び出していてもよい。或いは、例えば２本のシールド電線が設けられる場合、１本のシールド電線のシースが皮剥ぎされて露出した電磁シールド部材に第２被覆電線（アース用電線）が電気的に接続され、第１被覆電線における第１露出部と第２被覆電線がグロメットに挿通されていればよい。そして、もう１本のシールド電線は、皮剥ぎされない状態でグロメットに挿通されてもよい。このもう１本のシールド電線においては、従来公知の電磁シールド部材と第２被覆電線（アース用電線）との接続構造や防水構造を別途設けてもよい。 (3) In the above embodiment, the braided members 24 and 24 of the two shielded electric wires 12a and 12b are electrically connected to the second coated electric wire 14 which is one grounding electric wire via the splice terminal 15. However, when a plurality of shielded electric wires are provided, the second coated electric wire (earthing electric wire) may extend from the electromagnetic shield member of each shielded electric wire. Alternatively, for example, when two shielded electric wires are provided, the second coated electric wire (earthing electric wire) is electrically connected to the exposed electromagnetic shield member by peeling the sheath of one shielded electric wire, and the first coating is provided. It suffices that the first exposed portion and the second coated electric wire of the electric wire are inserted through the grommet. Then, the other shielded electric wire may be inserted into the grommet without being peeled off. In this other shielded electric wire, a connection structure or a waterproof structure between a conventionally known electromagnetically shielded member and a second coated electric wire (earthing electric wire) may be separately provided.
（４）前記実施形態では、電磁シールド部材である編組部材２４，２４における第２露出部３２，３２が後方に折り返されてスプライス端子１５に接続されていたが、この態様に限定されるものではない。即ち、例えば第２露出部における露出量が小さい場合等には、折り返されず前方に延出する状態の電磁シールド部材に第２被覆電線（アース用電線）が接続されてもよい。 (4) In the above embodiment, the second exposed portions 32, 32 of the braided members 24, 24 which are electromagnetic shield members are folded back and connected to the splice terminal 15, but the present invention is not limited to this embodiment. No. That is, for example, when the amount of exposure in the second exposed portion is small, the second coated electric wire (earthing electric wire) may be connected to the electromagnetic shield member in a state of extending forward without being folded back.
（５）前記実施形態では、電磁シールド部材（編組部材２４）と第２被覆電線１４とを接続する中継端子としてスプライス端子１５が採用されていたが、中継端子の具体的構造は特に限定されるものではない。即ち、中継端子は、電磁シールド部材と第２被覆電線とを電気的に接続するものであればよい。 (5) In the above embodiment, the splice terminal 15 is adopted as a relay terminal for connecting the electromagnetic shield member (braided member 24) and the second coated electric wire 14, but the specific structure of the relay terminal is particularly limited. It's not a thing. That is, the relay terminal may be any one that electrically connects the electromagnetic shield member and the second coated electric wire.
１０　ワイヤハーネス
１２，１２ａ，１２ｂ　シールド電線
１３　第１被覆電線
１４　第２被覆電線
１５　スプライス端子（中継端子）
１６　コルゲートチューブ（外装部材）
１８　開口部
２０　グロメット
２４　編組部材（電磁シールド部材）
２６　シース
２８　第１コア電線
３０　第１絶縁被覆
３２　第２露出部
３４　第１露出部
３８　第２コア電線
４０　第２絶縁被覆
４２　アース端子
４４　本体部
４６　外周筒部
４８　円形凹部
５０　第１貫通孔
５２　第２貫通孔
５４　粘着テープ 10 Wire harness 12, 12a, 12b Shielded wire 13 First coated wire 14 Second coated wire 15 Splice terminal (relay terminal)
16 Corrugated tube (exterior member)
18 Opening 20 Grommet 24 Braided member (electromagnetic shield member)
26 Sheath 28 1st core electric wire 30 1st insulation coating 32 2nd exposed part 34 1st exposed part 38 2nd core electric wire 40 2nd insulation coating 42 Ground terminal 44 Main body 46 Outer cylinder 48 Circular recess 50 1st through hole 52 Second through hole 54 Adhesive tape

Claims (3)

  1. 　第１被覆電線と前記第１被覆電線の周囲を覆う電磁シールド部材と前記電磁シールド部材を被覆する絶縁性のシースとを含むシールド電線と、
    　第２コア電線と前記第２コア電線を被覆する第２絶縁被覆とを含む第２被覆電線と、
    　前記シールド電線と前記第２被覆電線とを電気的に接続する中継端子と、
    　開口部を有し、前記シールド電線と前記第２被覆電線と前記中継端子とを覆う外装部材と、
    　前記外装部材に取り付けられるとともに、前記外装部材の前記開口部を覆うグロメットと、を備え、
    　前記シールド電線の前記第１被覆電線は、前記シースと前記電磁シールド部材とから露出する第１露出部を有し、
    　前記シールド電線の前記電磁シールド部材は、前記シースから露出する第２露出部を有し、
    　前記中継端子は、前記第２露出部と前記第２コア電線とを電気的に接続しており、
    　前記第２露出部と前記中継端子とは、前記外装部材に収容されており、
    　前記第１露出部と前記第２被覆電線とは、前記グロメットを隙間なく貫通している、ワイヤハーネス。     A shielded electric wire including a first coated electric wire, an electromagnetic shield member that covers the periphery of the first coated electric wire, and an insulating sheath that covers the electromagnetic shield member.
    A second coated electric wire including a second core electric wire and a second insulating coating for covering the second core electric wire, and a second coated electric wire.
    A relay terminal that electrically connects the shielded electric wire and the second coated electric wire,
    An exterior member having an opening and covering the shielded electric wire, the second coated electric wire, and the relay terminal.
    A grommet that is attached to the exterior member and covers the opening of the exterior member is provided.
    The first coated electric wire of the shielded electric wire has a first exposed portion exposed from the sheath and the electromagnetic shield member.
    The electromagnetic shield member of the shielded electric wire has a second exposed portion exposed from the sheath.
    The relay terminal electrically connects the second exposed portion and the second core electric wire.
    The second exposed portion and the relay terminal are housed in the exterior member.
    A wire harness in which the first exposed portion and the second coated electric wire penetrate the grommet without a gap.
  2. 　前記グロメットは、前記第１露出部が貫通する第１貫通孔と前記第２被覆電線が貫通する第２貫通孔とを有し、
    　前記第１露出部の外周面は、前記第１貫通孔の内周面と密着しており、
    　前記第２被覆電線の外周面は、前記第２貫通孔の内周面と密着している、請求項１に記載のワイヤハーネス。     The grommet has a first through hole through which the first exposed portion penetrates and a second through hole through which the second coated electric wire penetrates.
    The outer peripheral surface of the first exposed portion is in close contact with the inner peripheral surface of the first through hole.
    The wire harness according to claim 1, wherein the outer peripheral surface of the second coated electric wire is in close contact with the inner peripheral surface of the second through hole.
  3. 　前記シールド電線は、複数本であり、
    　前記第２被覆電線は、１本であり、
    　前記中継端子は、前記第２被覆電線の前記第２コア電線と前記複数のシールド電線の各前記第２露出部とを一括して電気的に接続している、請求項１または請求項２に記載のワイヤハーネス。     The shielded electric wire is a plurality of electric wires.
    The second coated electric wire is one,
    The relay terminal according to claim 1 or 2, wherein the second core electric wire of the second coated electric wire and the second exposed portion of each of the plurality of shielded electric wires are collectively electrically connected. The described wire harness.
PCT/JP2021/007852 2020-03-23 2021-03-02 Wire harness WO2021192840A1 (en)

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JP2020-051648 2020-03-23

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03126374U (en) * 1989-11-07 1991-12-19
JP2019175610A (en) * 2018-03-27 2019-10-10 住友電装株式会社 Wire harness

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03126374U (en) * 1989-11-07 1991-12-19
JP2019175610A (en) * 2018-03-27 2019-10-10 住友電装株式会社 Wire harness

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