JP2015082352A - Wire harness - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire harness excellent in versatility and capable of reducing man hours of working.SOLUTION: A wire harness comprises; a conductive sheet 10 formed into a tube state and having an insulation layer 11 on an outer surface side and a conductor layer 12 on an inner surface side; a first cable 20 disposed on the inner surface side of the conductive sheet 10; a drain wire 30 disposed on the inner surface side of the conductive sheet 10 so as to contact the conductor layer 12; and a second cable 40 disposed on the outer surface side of the conductive sheet 10. The conductive sheet 10 comprises a central part 10a where the conductor layer 12 and the insulation layer 11 are folded in the surrounding of the first cable 20, and an outer peripheral side part 10b wound around outside of the central part 10a. Between the insulation layer 11 on the central part 10a and the insulation layer 11 on the outer peripheral side part 10b, the second cable 40 is sandwiched.

Description

  The present invention relates to a wire harness.

  Even in the case of wire harnesses used in automobiles, in particular, in wire harnesses in which wirings connected to an ECU are bundled, there is a concern about malfunction of electronic devices due to the transfer of noise between electric wires. Therefore, a wire harness in which the electric wire is shielded by a shield layer is used.

  Conventionally, as shown in FIG. 7, one including two shielded electric wires 1, a drain wire 2, and an insulating sheath 3 is known (for example, see Patent Document 1). The shielded electric wire 1 has an electric wire 4 and a shield layer 5 that covers the electric wire 4 and shields noise. The electric wire 4 includes a conductor 4a and an insulator 4b that covers the conductor 4a. The shield layer 5 is formed of a conductor such as a metal foil.

  The two shielded electric wires 1 and the drain wires 2 extend in parallel and are arranged so that the two shielded electric wires 1 sandwich the drain wire 2. The insulating sheath 3 covers the two shielded wires 1 and the drain wire 2.

  Further, conventionally, as shown in FIG. 8, a configuration including a plurality of core electric wires 6, drain wires 7, and a metal foil tape 8 that covers the core electric wires 6 and shields noise is known. (For example, refer to Patent Document 2). The plurality of core electric wires 6 and the drain wires 7 are integrally bundled as a wire group and twisted as a whole.

  The metal foil tape 8 is spirally wound around the outer peripheral portion of the electric wire group including the core electric wire 6 and the drain wire 7 from one end portion to the other end portion of the electric wire group so as to be in contact with the drain wire 7 without any gap. Yes. Furthermore, the metal foil tape 8 is covered with an adhesive tape (not shown).

JP-A-10-125138 JP 2000-251548 A

  However, since what is disclosed in Patent Document 1 is manufactured with two shielded wires 1 covered with an insulating sheath 3, for example, when one end of each shielded wire 1 is connected to a different device. Needs to partially cut away the insulating sheath 3. Moreover, the thing currently disclosed by patent document 1 needs to manufacture a different product for every kind of electric wire 4, and is lacking in versatility.

  In order to prevent the plurality of core electric wires 6 from exchanging noise, the one disclosed in Patent Document 2 must be wrapped around each core electric wire 6 with a metal foil tape 8 to shield each core electric wire 6. In addition, the drain wire 7 is required for each core electric wire 6, and the number of work steps is increased.

  Then, this invention is made | formed in order to solve the subject mentioned above, and it aims at providing the wire harness which is excellent in versatility and can reduce work man-hours.

  In order to achieve the above object, the wire harness according to the present invention is disposed on the inner surface side of the conductor sheet having a tubular shape or a folded shape so as to have an insulating layer on the outer surface side and a conductor layer on the inner surface side. A conductor sheet comprising: a first covered electric wire; a drain wire arranged on the inner surface side of the conductor sheet so as to contact the conductor layer; and a second covered electric wire arranged on the outer surface side of the conductor sheet. Has a center side portion where the conductor layer and the insulating layer are folded around the first covered electric wire, and an outer peripheral side portion wound around the outside of the center side portion, and the center side portion The second covered electric wire is configured to be sandwiched between the insulating layer and the insulating layer on the outer peripheral side.

  With this configuration, in the wire harness according to the present invention, the drain wire arranged on the inner surface side of the conductor sheet is electrically connected to the conductor layer. Further, in the wire harness according to the present invention, the first covered electric wire is shielded by the conductor layer in the center side portion of the conductor sheet, and the second covered electric wire is second by the conductor layer in the outer peripheral side portion of the conductor sheet. The covered electric wire is shielded.

  For this reason, in the wire harness according to the present invention, the first covered electric wire and the second covered electric wire can share the drain wire, and the number of work steps for shielding the first covered electric wire and the second covered electric wire is reduced. can do. Moreover, the wire harness which concerns on this invention selectively shields the area which needs a noise countermeasure in the 1st covered electric wire and the 2nd covered electric wire by setting the dimension of the electric wire longitudinal direction of a conductor sheet suitably. Can do.

  In the wire harness having the configuration described above, the end of the outer peripheral side portion of the conductor sheet is a part of the insulating layer that is close to the end portion at a position closer to the center side portion of the conductor sheet than the end portion. It is preferably taped with an adhesive tape.

  With this configuration, the wire harness according to the present invention is such that the end of the outer peripheral side portion of the conductor sheet including the first covered electric wire and the second covered electric wire is closer to the center side portion of the conductor sheet than the end portion. Then, it is taped to a part of the insulating layer adjacent to the end. For this reason, the wire harness which concerns on this invention can hold | maintain the winding shape of a conductor sheet reliably irrespective of the number of a covered electric wire.

  Moreover, in the wire harness having the configuration described above, the conductor sheet has a tube shape, and the specific portion of the insulating layer that forms the end of the outer peripheral portion of the conductor sheet is the outer peripheral portion of the conductor sheet. It is preferable that the insulating layer adjacent to the end is taped to a part of the insulating layer with a double-sided adhesive tape.

  With this configuration, in the wire harness according to the present invention, the end portion of the outer peripheral side portion of the tube-shaped conductor sheet including the first covered electric wire and the second covered electric wire is connected to the end portion of the outer peripheral side portion of the conductor sheet. Taped to a portion of the adjacent insulating layer. For this reason, the wire harness which concerns on this invention can arrange | position a 1st covered electric wire and a drain wire inside a tube-shaped conductor sheet, and can form easily the folding | turning shape of a center side part. Moreover, since the wire harness which concerns on this invention can mount | wear with a double-sided tape before winding a conductor sheet, the mounting | wearing operation | work of a conductor sheet can be performed easily.

  ADVANTAGE OF THE INVENTION According to this invention, the wire harness which is excellent in versatility and can reduce work man-hour can be provided.

It is a schematic circuit diagram of the wire harness routed to the vehicle according to the embodiment of the present invention. 1 is a schematic perspective view of a wire harness according to an embodiment of the present invention. It is a schematic sectional drawing of the wire harness which concerns on embodiment of this invention. It is a schematic perspective view of the conductor sheet which comprises the wire harness which concerns on embodiment of this invention. It is a schematic sectional drawing which shows the state which has arrange | positioned the 1st covered electric wire which comprises the wire harness which concerns on embodiment of this invention, a 2nd covered electric wire, and a drain wire in the conductor sheet, and crushed the conductor sheet. It is XX sectional drawing of FIG. It is a schematic sectional drawing which shows an example of the conventional shielded electric wire. It is a schematic sectional drawing which shows the other example of the conventional shielded electric wire.

  Hereinafter, a wire harness according to an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the wire harness W according to the present embodiment is routed in an automobile or the like, and exchanges signal current between the ECU 100 in the engine room and the electronic devices 101, 102, 103. The case will be described. However, the use of the wire harness according to the present invention is not limited to an automobile.

  As shown in FIGS. 2 and 3, the wire harness W includes the conductor sheet 10, the first covered electric wire 20, the drain wire 30, the second covered electric wire 40, and the third covered electric wire 50. . Here, the 1st covered electric wire 20 and the 2nd covered electric wire 40 are electric wires used as a noise source.

  As shown in FIG. 4, the conductor sheet 10 has a tubular shape having an insulating layer 11 on the outer surface side and a conductive layer 12 on the inner surface side, and the inner peripheral portion of the tubular insulating layer 11 is covered with the conductor layer 12. It is a thing.

  The insulating layer 11 is made of a resin such as polyvinyl chloride. The conductor layer 12 is formed of a metal foil made of an aluminum alloy, a copper alloy, or the like. The conductor layer 12 is attached to the inner peripheral portion of the insulating layer 11 when the insulating layer 11 is extruded.

  The first covered electric wire 20 is disposed on the inner surface side of the conductor sheet 10 and has a conductor 21 and an insulating layer 22 that covers the conductor 21. The first covered electric wire 20 is inserted into the conductor sheet 10 and connects the ECU 100 and the electronic device 101.

  The drain wire 30 is disposed on the inner surface side of the conductor sheet 10 so as to be in contact with the conductor layer 12. The drain wire 30 is a bare wire that does not have an insulating layer, and is inserted through the conductor sheet 10 so that one end thereof is grounded to the ground point of the body of the automobile via the connection terminal 31 and the ground wire 32. It has become.

  The second covered electric wire 40 is disposed on the outer surface side of the conductor sheet 10 and has a conductor 41 and an insulating layer 42 that covers the conductor 41. The second covered electric wire 40 is configured to connect the ECU 100 and the electronic device 102. The third covered electric wire 50 includes a conductor 51 and an insulating layer 52 that covers the conductor 51, and connects the ECU 100 and the electronic device 103.

  The conductors 21, 41, 51 are stranded wires or single wires, and the material thereof is copper, aluminum, or the like. For the insulating layers 22, 42, 52, for example, polyvinyl chloride or the like is used. For the drain wire 30, for example, a tin-plated annealed copper stranded wire is used.

  As shown in FIGS. 2 and 3, the conductor sheet 10 is wound around the center side portion 10 a where the conductor layer 12 and the insulating layer 11 are folded around the first covered electric wire 20, and outside the center side portion 10 a. And an outer peripheral side portion 10b.

  The conductor layer 12 in the center side portion 10 a is in contact with the outer peripheral portion of the first covered electric wire 20 and the outer peripheral portion of the drain wire 30. In the second covered electric wire 40, the insulating layer 11 in the center side portion 10 a and the insulating layer 11 in the outer peripheral side portion 10 b sandwich the second covered electric wire 40.

  Furthermore, the outer peripheral side portion 10b of the conductor sheet 10 has the insulating layer 11 at the winding end end bonded to the insulating layer 11 located closer to the center side portion 10a than the winding end end by the double-sided adhesive tape 13. Yes.

  The third covered electric wire 50 is disposed along the outer peripheral side portion 10b of the conductor sheet 10, and is bound to the outer peripheral side portion 10b by binding means such as an adhesive tape or a band (not shown).

  When manufacturing the wire harness W according to the present embodiment, as shown in FIGS. 5 and 6, the first covered electric wire 20 is inserted into the conductor sheet 10, and the drain wire 30 is inserted into the conductor sheet 10. Insert so that it touches.

  Next, the conductor sheet 10 is crushed into a flat shape, and the conductor sheet 10 is folded around the first covered electric wire 20 to form the center side portion 10a. The first covered electric wire 20 and the drain wire 30 It is accommodated inside 10a. Thereby, the outer peripheral part of the 1st covered electric wire 20 and the outer peripheral part of the drain wire 30 come into contact with the conductor layer 12 in the center side part 10a.

  Further, the remaining portion of the conductor sheet 10 is wound around the outside of the center side portion 10a to form the outer periphery side portion 10b, and the second covered electric wire 40 is sandwiched between the center side portion 10a and the outer periphery side portion 10b. To be. Thereby, the 2nd covered electric wire 40 is located in the outer side of the center side part 10a, and the 1st covered electric wire 20 and the 2nd covered electric wire 40 are mutually shielded.

  Thereafter, as shown in FIG. 3, the insulating layer 11 at the winding end of the outer peripheral side portion 10b of the conductor sheet 10 is double-sided on the insulating layer 11 located closer to the center side portion 10a than the winding end. The adhesive tape 13 is used for adhesion so that the outer peripheral portion 10b does not expand. Prior to inserting the first covered electric wire 20 and the drain wire 30 into the conductor sheet 10, the double-sided adhesive tape 13 is attached to the outer periphery of the conductor sheet 10 as shown in FIG. 4.

  Alternatively, instead of the double-sided adhesive tape 13, an adhesive tape (not shown) is pasted so as to cover both the winding end end portion of the outer peripheral side portion 10 b of the conductor sheet 10 and the portion closer to the center side portion 10 a than the winding end end portion. Thus, the development of the outer peripheral portion 10b is prevented.

  Further, the third covered electric wire 50 is disposed along the outer peripheral side portion 10b of the conductor sheet 10, and is bound to the outer peripheral side portion 10b by a binding means such as an adhesive tape or a band (not shown).

  Furthermore, one end of the first covered electric wire 20, the second covered electric wire 40, and the third covered electric wire 50 is connected to the ECU 100, and the first covered electric wire 20, the second covered electric wire 40, and the third covered electric wire are connected. The other end of 50 and the electronic devices 101, 102, 103 are connected. Also, one end of the drain wire 30 is grounded to the ground point of the automobile body via the connection terminal 31 and the ground wire 32.

  In the wire harness W according to the present embodiment, the drain wire 30 is electrically connected to the conductor layer 12 of the conductor sheet 10. For this reason, in the wire harness W according to the present embodiment, the first covered electric wire 20 and the second covered electric wire 40 can share the drain wire 30, and the grounding operation to the earth point is performed once.

  Further, in the wire harness W according to the present embodiment, the first covered electric wire 20 is shielded by the conductor layer 12 in the central portion 10 a of the conductor sheet 10, and the first is covered by the conductor layer 12 in the outer peripheral portion 10 b of the conductor sheet 10. The two covered electric wires 40 are shielded. For this reason, the wire harness W which concerns on this Embodiment can reduce the operation man-hour which shields the 1st covered electric wire 20 and the 2nd covered electric wire 40. FIG.

  The wire harness W according to the present embodiment inserts the first covered electric wire 20 and the drain wire 30 into the tubular conductor sheet 10 and then folds the conductor sheet 10 to form the center side portion 10a. Furthermore, the wire harness W according to the present embodiment winds the remaining portion of the conductor sheet 10 around the outside of the center side portion 10a to form the outer peripheral side portion 10b.

  For this reason, the wire harness W which concerns on this Embodiment can form the center side part 10a and the outer peripheral side part 10b easily. Therefore, the wire harness which concerns on this Embodiment can wind up the 1st covered electric wire 20, the drain wire 30, and the 2nd covered electric wire 40 around the conductor sheet 10 reliably like FIG. 2, FIG.

  Moreover, the wire harness W which concerns on this Embodiment can selectively shield the area where the noise countermeasure is required in the 1st covered electric wire 20 and the 2nd covered electric wire 40 with the conductor sheet 10. FIG. Therefore, as shown in FIG. 1, the wire harness W according to the present embodiment does not need to shield the first covered electric wire 20 and the second covered electric wire 40 with the conductor sheet 10 over the entire length, and is excellent in versatility. Cost can be reduced.

  Furthermore, the wire harness W according to the present embodiment shields the first covered electric wire 20 and the second covered electric wire 40 that are noise sources by the conductor layer 12 of the conductor sheet 10, and then the outer peripheral side portion of the conductor sheet 10. The third covered electric wire 50 is bound to 10b.

  For this reason, the wire harness W according to the present embodiment can prevent the third covered electric wire 50 from being affected by noise from the first covered electric wire 20 and the second covered electric wire 40.

  In addition, the wire harness W according to the present embodiment is such that the insulating layer 11 at the end of winding of the outer peripheral side portion 10b of the conductor sheet 10 is positioned closer to the center side portion 10a than the end of winding. 11 is bonded with a double-sided adhesive tape 13. For this reason, the wire harness W which concerns on this invention can perform the mounting | wearing operation | work of the conductor sheet 10 easily.

  In the embodiment described above, the number of the second covered electric wires 40 is one, but a plurality of second covered electric wires 40 may be provided. In this case, if the diameter of the conductor sheet 10 is made larger and each second covered electric wire 40 is configured to be shielded from each other by the outer peripheral side portion 10b wound around the central side portion 10a of the conductor sheet 10, a plurality The second covered electric wire 40 can be shielded.

  In the above-described embodiment, the conductor sheet 10 has a tubular shape, but instead of the conductor sheet 10, the conductor sheet 10 has a two-fold shape having the insulating layer 11 on the outer surface side and the conductor layer 12 on the inner surface side. May be used. In this case, the first covered electric wire 20 and the drain wire 30 are arranged on the inner surface side of the folded portion of the conductor sheet.

  As described above, in the wire harness according to the present invention, the drain wire is conducted to the conductor layer of the conductor sheet, the first covered electric wire is shielded by the conductor layer in the center side portion of the conductor sheet, and the outer peripheral side portion of the conductor sheet. The second covered electric wire is shielded by the conductor layer. Therefore, in the wire harness according to the present invention, the first covered electric wire and the second covered electric wire can share the drain wire, and is excellent in versatility and shields the first covered electric wire and the second covered electric wire. This has the effect of reducing the number of working man-hours.

  Since the wire harness according to the present invention is excellent in versatility and can reduce the work man-hours, it can be used for vehicles, various devices, mechanical equipment, and the like.

DESCRIPTION OF SYMBOLS 10 Conductor sheet 10a Center side part 10b Outer peripheral side part 11 Insulating layer 12 Conductor layer 13 Double-sided adhesive tape 20 First covered electric wire 30 Drain wire 40 Second covered electric wire

Claims (3)

A conductor sheet in the form of a tube or folded so as to have an insulating layer on the outer surface side and a conductor layer on the inner surface side;
A first covered electric wire disposed on the inner surface side of the conductor sheet;
A drain line disposed on the inner surface side of the conductor sheet so as to be in contact with the conductor layer;
A second covered electric wire disposed on the outer surface side of the conductor sheet,
The conductor sheet has a center side portion where the conductor layer and the insulating layer are folded around the first covered electric wire, and an outer peripheral side portion wound around the center side portion;
A wire harness characterized in that a second covered electric wire is sandwiched between the insulating layer in the central portion and the insulating layer in the outer peripheral portion.   The end portion of the outer peripheral side portion of the conductor sheet is taped to the part of the insulating layer adjacent to the end portion by an adhesive tape at a position closer to the center side portion of the conductor sheet than the end portion. The wire harness according to claim 1, wherein:   The conductor sheet has a tube shape, and a specific portion of the insulating layer that forms an end portion of the outer peripheral side portion of the conductor sheet is adjacent to an end portion of the outer peripheral side portion of the conductor sheet. The wire harness according to claim 2, wherein the wire harness is taped to the portion with a double-sided adhesive tape.

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