JP2015204529A - Noise elimination circuit of wire harness, and wire harness assembly including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noise elimination circuit of wire harness capable of eliminating noise accurately.SOLUTION: A noise elimination circuit 10 for eliminating noise of a wire harness WH1 routed in an automobile is constituted of a branch line 6a branched from the trunk 6 of the wire harness WH1, and a noise filter 1 to be connected with the distal end of the branch line 6a. The branch line 6a has a pair of wire branch parts 61a, 62a where the wires 61, 62, from which noise is eliminated, out of the wires 60, 61, 62 of the trunk 6 are branched from the trunk 6 and extending in parallel with each other, a shield conductor 63 covering the wire branch part 62a, and a connector 7. The branch line 6a and noise filter 1 are connected by means of the connectors 7, 50.

Description

  The present invention relates to a noise removal circuit for a wire harness mounted on an automobile or the like, and a wire harness assembly including the noise removal circuit.

  Conventionally, various noise removal circuits have been used to remove electrical noise on the wire harness. For example, in a car, a noise removal circuit for a wire harness shown in FIG. 9 is often used (see Patent Document 1).

  The noise removal circuit 510 of the wire harness WH shown in FIG. 9 branches the electric wires 61 and 62 to be subjected to noise removal from the trunk line 6 in which a plurality of electric wires 60, 61 and 62 are bundled, and the electric wire branch portions 61a and 62a. This is a circuit in which a unitized noise filter unit 501 is connected to the front end of the motor, and the noise filter unit 501 is grounded (body grounded) by, for example, bolting to the vehicle body panel. The pair of electric wire branch portions 61a and 62a extend in parallel toward the noise filter portion 501, and a tape or the like is wound around the outer periphery. The noise filter unit 501 extracts noise (high-frequency noise) from the current input from the wire branch portion 61a, drops it to the ground, and outputs the current from which noise is extracted to the wire branch portion 62a.

JP 2009-111182 A

  In the conventional noise removal circuit 510 described above, as indicated by an arrow N in FIG. 9, noise propagates from the wire branch portion 61a to the wire branch portion 62a without passing through the noise filter portion 501 due to the line capacitance. There was a problem that there was. Further, when the distance from the main line 6 of the wire harness WH to the noise filter unit 501 is long, the above-described noise propagation is particularly likely to occur.

  Therefore, the present invention provides a noise removal circuit for a wire harness that can accurately remove noise in a noise removal circuit in which a noise filter unit is provided at a branch portion branched from a trunk line of the wire harness, and a wire including the same An object is to provide a harness assembly.

  The invention described in claim 1 is a noise removal circuit for a wire harness, in the noise removal circuit for a wire harness, a branch portion branched from a trunk line of the wire harness, a noise filter portion provided in the branch portion, The branch portion is electrically connected to the trunk line, and is electrically connected to the trunk line, and a first conductive wire portion extending from a base end portion of the branch portion to the noise filter portion. A second conductor portion extending from the base end portion of the branch portion to the noise filter portion and electrically connected to the first conductor portion via the noise filter portion, the first conductor portion, and the A wire harness noise removing circuit comprising: a shield conductor portion that covers at least one of the second conductor portions and is grounded.

  The invention described in claim 2 is the invention described in claim 1, wherein the first conductive wire portion and the second conductive wire portion are separate from the noise filter portion, and the first conductive wire. And the second conductive wire portion and the unitized noise filter portion are connected by a connector.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the noise filter portion extends from the first conductor portion to a tip end portion of the branch portion. And a second circuit portion that extends from the second conductor portion to the tip of the branch portion and is electrically connected to the first circuit portion at the tip of the branch portion, and one end of which is grounded And having the other end open, and the ground conductor is disposed between the first circuit portion and the second circuit portion. .

  The invention described in claim 4 is the invention described in claim 3, wherein the first circuit portion has a first inductance forming portion, and the second circuit portion is a second inductance forming portion. It is characterized by having.

  The invention described in claim 5 includes the noise removal circuit of the wire harness according to any one of claims 1 to 4 and a wire harness from which noise is removed by the noise removal circuit. A wire harness assembly.

  According to the invention described in claims 1, 2, and 5, the branch portion includes a shield conductor portion that covers at least one of the first conductor portion and the second conductor portion and is grounded. Therefore, even when the first conductor portion and the second conductor portion are close to each other and the distance from the main line of the wire harness to the noise filter portion is separated, the first conductor portion and the second conductor portion are Noise propagation due to electrostatic coupling between them can be made difficult to occur. Therefore, noise can be removed with high accuracy.

  According to the invention described in claim 3, since the ground conductor is disposed between the first circuit portion and the second circuit portion, the first circuit portion and the second circuit portion are arranged. Noise propagation due to electrostatic coupling between the two can be made difficult. Therefore, it is possible to provide a wire harness noise removing circuit capable of accurately removing noise.

  According to the fourth aspect of the present invention, it is possible to make it difficult for the ground conductor to cause noise propagation even between a pair of inductance forming portions where noise propagation is likely to occur due to electrostatic coupling.

It is a circuit diagram of the noise removal circuit of the wire harness concerning the 1st Embodiment of the present invention. It is explanatory drawing explaining the structure of the wire harness of FIG. It is a perspective view of the noise filter part which comprises the noise removal circuit of FIG. FIG. 4 is a perspective view of a plurality of bus bars and brackets constituting the noise filter section of FIG. 3. It is explanatory drawing explaining the structure of the noise filter part of FIG. It is a circuit diagram of the noise removal circuit of the wire harness concerning the 2nd Embodiment of this invention. It is a circuit diagram of the noise removal circuit of the wire harness concerning the 3rd Embodiment of this invention. It is explanatory drawing explaining the structure of the wire harness of FIG. It is a circuit diagram of the noise removal circuit of the conventional wire harness.

(First embodiment)
A “wire harness noise removal circuit” and a “wire harness assembly” according to a first embodiment of the present invention will be described with reference to FIGS. The “wire harness noise removal circuit 10” shown in FIG. 1 includes a “branch line 6a” branched from the main line 6 of the wire harness WH1 and a “noise filter unit 1” connected to the tip of the branch line 6a. It is configured. The “wire harness assembly” includes the noise removal circuit 10 and the wire harness WH1 from which noise is removed by the noise removal circuit 10.

  The wire harness WH1 connects devices installed in the automobile and mounted on the automobile. As shown in FIG. 2, the trunk line 6 in which a plurality of electric wires 60, 61, 62 are bundled, Branch line 6a.

  The branch line 6a includes a pair of wire branch portions 61a and 62a in which the wires 61 and 62 to be noise-removed among the wires 60, 61 and 62 of the trunk line 6 branch from the trunk line 6 and extend in parallel to each other, and a pair of wire branches. The shield conductor 63 covering the wire branch portion 62a of the portions 61a and 62a, the female terminals 71 and 72 attached to the distal ends of the pair of wire branch portions 61a and 62a, and the terminals 71 and 72 are accommodated. Connector housing 70. The terminals 71 and 72 and the connector housing 70 constitute the connector 7. The connector 7 is connected to the connector 50 of the noise filter unit 1.

  The pair of electric wire branch portions 61 a and 62 a are covered electric wires whose core wires are covered with an insulating coating, and extend in parallel from the main line 6 to the noise filter unit 1. The electric wire branch portion 61 a and the electric wire branch portion 62 a are electrically connected via the noise filter portion 1. The pair of electric wire branch portions 61 a and 62 a and the shield conductor portion 63 are grouped together by winding a tape 64 around the outer periphery.

  In this embodiment, the shield conductor portion 63 uses an aluminum sheet, covers the entire outer periphery of the wire branch portion 62a, and covers from one end to the other end of the wire branch portion 62a. The shield conductor 63 is grounded to the vehicle body panel or the like. The shield conductor 63 may be a braided braid or the like other than the aluminum sheet.

  Thus, by covering the wire branch portion 62a with the shield conductor portion 63, even when the wire branch portions 61a and 62a come close to each other and the branch line 6a extends long, the wire branch portion 61a and the wire branch portion 62a Propagation of noise due to the line-to-line capacitance is less likely to occur. That is, when noise is transmitted from the wire branch portion 61a to the wire branch portion 62a without passing through the noise filter portion 1, the noise is transmitted to the shield conductor portion 63 closer to the wire branch portion 62a and falls to the ground. Noise propagation is unlikely to occur between the portion 61a and the wire branch portion 62a.

  Next, the configuration of the noise filter unit 1 will be described. As shown in FIGS. 3 to 5, the noise filter unit 1 includes a male input terminal 24 connected to the wire branch portion 61 a, a male output terminal 25 connected to the wire branch portion 62 a, and an input terminal 24. A pair of inductors L1 and L2 provided in a conductive path from the output terminal 25 to the output terminal 25; a first bus bar 21, a second bus bar 22, and a third bus bar 23 that form a conductive path from the input terminal 24 to the output terminal 25; The ground bus bar 26, the capacitor C, the bracket 27, the mounting member 3, and the housing 5 are provided.

  The input terminal 24, the output terminal 25, the first bus bar 21, the second bus bar 22, the third bus bar 23, the ground bus bar 26, and the bracket 27 described above are mounted with a base material punched from a single metal plate made of synthetic resin. It is integrated with the member 3 by insert molding, and after the insert molding, an unnecessary portion of the base material is cut to form the shape shown in FIGS.

  The input terminal 24 and the output terminal 25 are formed in an elongated plate shape, and are arranged in parallel with a space therebetween.

  The first bus bar 21 and the second bus bar 22 are formed in a substantially rectangular shape in plan view, and are arranged at intervals so that their short sides are parallel to each other. That is, the first bus bar 21 and the second bus bar 22 are arranged so that the long sides thereof are aligned on a straight line. The input terminal 24 is integrally formed with the first bus bar 21 so as to be continuous with the short side of the first bus bar 21. The output terminal 25 is integrally formed with the second bus bar 22 so as to be continuous with the short side of the second bus bar 22. The third bus bar 23 is formed in an elongated rectangular shape, and is spaced from the first bus bar 21 and the second bus bar 22 so that the long sides thereof are parallel to the long sides of the first bus bar 21 and the second bus bar 22. It is arranged with a gap.

  The bracket 27 is disposed on the opposite side of the third bus bar 23 from the first bus bar 21 and second bus bar 22 side. A bolt insertion hole 27 a is provided at one end of the bracket 27. The bracket 27 is grounded (body ground) by passing the bolt through the bolt insertion hole 27a and fixing the bracket 27 to the vehicle body panel.

  The ground bus bar 26 is integrally formed with the bracket 27 and extends from the bracket 27 to the input terminal 24 and the output terminal 25 side, bypassing the third bus bar 23. The ground bus bar 26 has a portion 26 b connected to the bracket 27, and a portion 26 a disposed between the first bus bar 21 and the second bus bar 22. The ground bus bar 26 is open except for the part 26b connected to the bracket 27, and is not electrically connected to anything. The portion 26 a is disposed between the short side of the first bus bar 21 and the short side of the second bus bar 22 and is disposed on the same plane as the first bus bar 21 and the second bus bar 22.

  Further, the input terminal 24 and the output terminal 25 are positioned in a fitting portion 52 described later of the housing 5 and constitute a connector 50 together with the fitting portion 52. This connector 50 is connected to the connector 7 of the branch line 6a. When the connector 50 and the connector 7 are connected, the input terminal 24 is fitted to the terminal 71 attached to the distal end portion of the wire branch portion 61a, and the output terminal 25 is attached to the distal end portion of the wire branch portion 62a. 72.

  In this embodiment, the pair of inductors L1 and L2 uses a toroidal coil in which a winding is wound around a toroidal core. The inductor L1 has one lead wire inserted into the through hole 21a or the through hole 21b of the first bus bar 21 and soldered, and the other lead wire inserted into the through hole 23a or the through hole 23b of the third bus bar 23. Soldered. The inductor L2 has one lead wire inserted into the through hole 22a or the through hole 22b of the second bus bar 22 and soldered, and the other lead wire inserted into the through hole 23c or the through hole 23d of the third bus bar 23. Soldered. Further, as shown in FIG. 5, the portion 26a of the ground bus bar 26 is disposed between the position where the inductor L1 is disposed and the position where the inductor L2 is disposed.

  The capacitor C has one lead wire inserted into the through hole 23e of the third bus bar 23 and soldered, and the other lead wire inserted into the through hole 27b of the bracket 27 and soldered.

  The housing 5 is made of a synthetic resin, and includes a cylindrical fitting portion 52 that positions the input terminal 24 and the output terminal 25, and a main body portion 51 that accommodates other components. The bracket 27 has a bolt insertion hole 27 a positioned outside the housing 5. Thus, the noise filter unit 1 includes the input terminal 24, the output terminal 25, the first bus bar 21, the second bus bar 22, the third bus bar 23, the ground bus bar 26, the bracket 27, the mounting member 3, the pair of inductors L1 and L2. The capacitor C is accommodated in the housing 5 and unitized.

  The noise filter unit 1 having the above configuration removes noise (high-frequency noise) from the current input from the wire branch portion 61a, and outputs the current from which the noise has been removed to the wire branch portion 62a.

  In general, the vicinity of an inductance forming portion such as a coil is a portion where noise propagation is particularly likely to occur due to electrostatic coupling. In this noise filter portion 1, a position between inductors L1 and L2 where electrostatic coupling is likely to occur. Since the portion 26 a of the ground bus bar 26 is disposed between the first bus bar 21 and the second bus bar 22, noise propagation occurs due to electrostatic coupling between the first bus bar 21 and the second bus bar 22. hard. That is, when noise is transmitted from the first bus bar 21 to the second bus bar 22 without passing through a predetermined circuit, the noise is transmitted to the ground bus bar 26 closer to the second bus bar 22 and falls to the ground. Propagation due to electrostatic coupling between the first bus bar 22 and the second bus bar 22 hardly occurs. Therefore, the interval between the first bus bar 21 and the second bus bar 22 can be reduced between the inductors L1 and L2 where electrostatic coupling is likely to occur, and the noise filter unit 1 can be downsized while satisfying the noise removal performance. it can.

  In the noise filter unit 1 described above, the input terminal 24, the first bus bar 21, the inductor L1 (corresponding to the “first inductance forming unit” in the claims), and the third bus bar 23 are as claimed. This constitutes the “first circuit section”. The output terminal 25, the second bus bar 22, the inductor L <b> 2 (corresponding to the “second inductance forming part” in the claims), and the third bus bar 23 are the “second circuit part” in the claims. Is comprised. The ground bus bar 26 constitutes a “ground conductor” in the claims. That is, the ground bus bar 26 is disposed between the first circuit unit and the second circuit unit.

  The branch line 6a, the input terminal 24, the first bus bar 21, the inductor L1, the third bus bar 23, the inductor L2, the second bus bar 22, and the output terminal 25 constitute a “branch portion” in the claims. .

  The noise removal circuit 10 of the wire harness described above can make noise propagation less likely to occur between the electric wire branch portion 61a and the electric wire branch portion 62a by the shield conductor portion 63 in the branch line 6a portion. In one portion, the ground bus bar 26 makes it difficult for noise propagation between the first bus bar 21 and the second bus bar 22 to occur. Therefore, the noise of the wire harness WH1 can be accurately removed.

  In the noise removal circuit 10 for the wire harness described above, the noise filter unit 1 has the ground bus bar 26. However, in the present invention, the ground bus bar 26 is not an essential configuration, and may be omitted.

(Second Embodiment)
A “wire harness noise removal circuit” and a “wire harness assembly” according to a second embodiment of the present invention will be described with reference to FIG. In FIG. 6, the same components as those of the first embodiment described above are denoted by the same reference numerals, and description thereof is omitted.

  The “wire harness noise removal circuit 110” shown in FIG. 6 includes a “branch line 6b” as a “branch part” branched from the main line 6 of the wire harness WH2 and a “noise filter part 101” provided on the branch line 6b. And is composed of. The “wire harness assembly” includes the noise removal circuit 110 and the wire harness WH2 from which noise is removed by the noise removal circuit 110.

  The branch line 6 b includes a pair of wire branch portions 61 a and 62 a in which the wires 61 and 62 to be noise-removed among the wires 60, 61 and 62 of the trunk line 6 branch from the trunk line 6 and extend in parallel to each other, and the shield conductor portion 63. And a ground wire 126. The electric wire branch portion 61a and the electric wire branch portion 62a are electrically connected at the tip of the branch line 6b.

  A first inductance forming portion L11 is provided on the wire branch portion 61a. The first inductance forming portion L11 is formed by attaching a ferrite bead to the outer periphery of the wire branch portion 61a. In the electric wire branch portion 61a, the portion from the base end portion of the branch line 6b to the first inductance forming portion L11 corresponds to a “first conductor portion” in the claims. Moreover, in this electric wire branch part 61a, the part from the 1st inductance formation part L11 to the front-end | tip part of the branch line 6b is equivalent to the "1st circuit part" of a claim.

  A second inductance forming portion L12 is provided on the wire branch portion 62a. The second inductance forming portion L12 is formed by attaching ferrite beads to the outer periphery of the wire branch portion 62a. In the electric wire branch portion 62a, the portion from the base end portion of the branch line 6b to the second inductance forming portion L12 corresponds to a “second conductor portion” in the claims. Moreover, in this electric wire branch part 62a, the part from the 2nd inductance formation part L12 to the front-end | tip part of the branch line 6b is equivalent to the "2nd circuit part" of a claim.

  The first inductance forming portion L11 and the second inductance forming portion L12 are formed by attaching ferrite beads to the outer periphery of the wire branch portions 61a and 62a. In addition to this, the wire branch portion 61a is attached to the core. 62a may be formed by being spirally wound, or only the wire branch portions 61a and 62a may be spirally wound without using a core.

  The shield conductor portion 63 covers a portion from the base end portion of the branch line 6b to the second inductance forming portion L12 (that is, the second conductor portion) in the electric wire branch portion 62a and covers the entire outer periphery of the portion. ing. The shield conductor 63 is grounded to the vehicle body panel or the like.

  The grounding electric wire 126 is a covered electric wire whose core wire is covered with an insulating coating, and extends in parallel between the pair of electric wire branch portions 61a and 62a. The ground wire 126 includes a portion from the first inductance forming portion L11 in the wire branch portion 61a to the tip of the branch wire 6b (that is, a first circuit portion), and a second inductance forming portion in the wire branch portion 62a. It is arranged between the portion from L12 to the tip of the branch line 6b (that is, the second circuit portion). One end of the ground wire 126 located at the tip of the branch line 6b is grounded to the vehicle body panel or the like. The other end of the ground wire 126 on the trunk line 6 side is not electrically connected to anything. In other words, it is open. The ground wire 126 corresponds to a “ground conductor” in the claims.

  Tape is wound around the outer periphery of the above-described wire branch portions 61a and 62a, the ground wire 63, and the ground wire 126, and the positional relationship is fixed so that the ground wire 126 is located between the wire branch portions 61a and 62a. Yes.

  The noise filter unit 101 includes a portion from the first inductance forming portion L11 to the tip end portion of the branch line 6b (that is, the first circuit portion) in the wire branch portion 61a and a second inductance forming portion L12 in the wire branch portion 62a. To the tip of the branch line 6b (ie, the second circuit portion), the ground wire 126, and a capacitor C electrically connected between the tip of the branch line 6b and the ground (such as a vehicle body panel), It consists of Thus, the noise filter unit 101 is not unitized.

  The noise filter unit 101 having the above configuration removes noise (high-frequency noise) from the current flowing through the electric wire 61 and allows the electric current from which the noise has been removed to flow through the electric wire 62.

  The noise removal circuit 110 for the wire harness described above is provided between the wire branch portion 61a and the wire branch portion 62a by the shield conductor portion 63 and the ground wire 126 over the entire region from the proximal end portion to the distal end portion of the branch portion 6b. Noise propagation due to line-to-line capacitance can be made difficult to occur. Therefore, the noise of the wire harness WH2 can be accurately removed.

  In the noise removal circuit 110 of the wire harness described above, the noise filter unit 101 has the ground wire 126. However, in the present invention, the ground wire 126 is not an essential configuration and may be omitted.

(Third embodiment)
A “wire harness noise removal circuit” and a “wire harness assembly” according to a third embodiment of the present invention will be described with reference to FIGS. 7-8, the same code | symbol is attached | subjected to the same component as 1st Embodiment mentioned above, and description is abbreviate | omitted.

  The “wire harness noise removal circuit 210” shown in FIG. 7 includes a “branch line 6c” as a “branch part” branched from the main line 6 of the wire harness WH3 and a “noise filter part 201” provided on the branch line 6c. And is composed of. The “wire harness assembly” includes the noise removal circuit 210 and the wire harness WH3 from which noise is removed by the noise removal circuit 210.

  As shown in FIG. 8, the branch line 6 c includes electric wire branch portions 61 a and 62 a that branch off from the main line 6, a shield conductor portion 63 that covers the electric wire branch portion 62 a, and tip portions of the electric wire branch portions 61 a and 62 a. A female terminal 71, 72 attached to the shield conductor 63, a female terminal 73 electrically connected to the shield conductor 63 directly or through another member, and a connector housing 70 containing the terminals 71, 72, 73. ,have. The terminals 71, 72, 73 and the connector housing 70 constitute a connector 207. The connector 207 is connected to the connector 250 of the noise filter unit 201.

  The noise filter unit 201 includes a ground bus bar 226 instead of the ground bus bar 26 described in the first embodiment. The ground bus bar 226 has a male terminal 26 c extending from a portion 26 a (see FIGS. 4 and 5) disposed between the first bus bar 21 and the second bus bar 22. The noise filter unit 201 has the same configuration as the noise filter unit 1 of the first embodiment except that the ground bus bar 226 is provided instead of the ground bus bar 26.

  The terminal 26 c is disposed between the position where the input terminal 24 is disposed and the position where the output terminal 25 is disposed, and is positioned in the fitting portion 52 of the housing 5 to constitute the connector 250. This connector 250 is connected to the connector 207 of the branch line 6c. When the connector 250 and the connector 207 are connected, the terminal 26 c provided on the ground bus bar 226 is fitted with the terminal 73 electrically connected to the shield conductor portion 63.

  In the noise filter unit 201 configured as described above, the ground bus bar 226 is disposed between the position where the input terminal 24 is disposed and the position where the output terminal 25 is disposed. Noise propagation due to electrostatic coupling between them can be made difficult to occur. In addition, since the terminal 26 c provided on the ground bus bar 226 is connected to the shield conductor 63 via the terminal 73, noise riding on the shield conductor 63 can be dropped to the ground side via the ground bus bar 226. .

  Thus, the noise removal circuit 210 of the wire harness can simplify the grounding structure of the shield conductor portion 63.

  In the first to third embodiments described above, the shield conductor 63 covers the electric wire branch portion 62a. However, in the present invention, the shield conductor 63 covers the electric wire branch portion 61a. The shield conductor 63 may be configured to cover both the wire branch portion 61a and the wire branch portion 62a.

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

DESCRIPTION OF SYMBOLS 1,101,201 Noise filter part 6 Trunk line 6a, 6b, 6c Branch line 10, 110, 210 Noise removal circuit of wire harness 61a Electric wire branch part (1st conducting wire part)
62a Electric wire branch (second conductor)
63 Shield conductor WH1, WH2, WH3 Wire harness

Claims (5)

In the noise removal circuit of the wire harness,
A branch portion branched from the main line of the wire harness, and a noise filter portion provided in the branch portion,
The branch is
A first conductor portion electrically connected to the trunk line and extending from the base end portion of the branch portion to the noise filter portion;
A second conductor portion that is electrically connected to the trunk line and extends from the base end portion of the branch portion to the noise filter portion, and is electrically connected to the first conductor portion via the noise filter portion. When,
A shield conductor that covers at least one of the first conductor and the second conductor, and is grounded;
A noise removal circuit for a wire harness characterized by comprising: The first conductor part and the second conductor part are separate from the noise filter part,
The noise removal circuit for a wire harness according to claim 1, wherein the first conductor portion and the second conductor portion and the unitized noise filter portion are connected by a connector. The noise filter unit is
A first circuit portion extending from the first conductor portion to the tip of the branch portion;
A second circuit portion extending from the second conducting wire portion to a tip portion of the branch portion, and electrically connected to the first circuit portion at the tip portion of the branch portion;
A grounding conductor having one end grounded and the other end open;
Have
The noise removal circuit for a wire harness according to claim 1 or 2, wherein the ground conductor is disposed between the first circuit portion and the second circuit portion. The noise of the wire harness according to claim 3, wherein the first circuit unit includes a first inductance forming unit, and the second circuit unit includes a second inductance forming unit. Removal circuit. A wire harness assembly comprising: the noise removal circuit of the wire harness according to any one of claims 1 to 4; and a wire harness from which noise is removed by the noise removal circuit. .

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