Wiring harness with shielded flat cable

Abstract

Wiring harness (WH), with: a shielded flat cable (10), with: a plurality of conductors (11) arranged parallel to one another; an insulating sheath portion (12) covering the plurality of conductors (11) and having a plurality of annular first portions, each of the plurality of annular first portions covering a conductor (11a, 11b) of the plurality of conductors (11), and at least one second portion connecting adjacent ones of the plurality of annular first portions, the insulating sheath portion (12) having an exposed conductor portion (13) exposing a part of at least one conductor (11a) of the plurality of conductors (11); and a shielding member (20) covering an outer periphery of the insulating sheath portion (12), wherein the part of the at least one conductor (11a) of the plurality of conductors (11) is electrically connected to the shielding member (20) via the exposed conductor portion (13); a first device (C1) configured to be connected to one end of the shielded flat cable (10); and a second device (C2) designed to be connected to the other end of the shielded flat cable (10), wherein a signal is transmitted from the first device (C1) to the second device (C2) through a different conductor (11b) of the plurality of conductors (11) than the at least one conductor (11a) provided with the exposed conductor portion (13); wherein the at least one conductor (11a) of the plurality of conductors (11) formed with the exposed conductor portion (13) is connected to a ground at a position between the exposed conductor portion (13) and the second device (C2), and wherein the exposed conductor portion (13) exposes an entire circumference of the part of the at least one conductor (11a) of the plurality of conductors (11).

Description

Background of the invention 1. Field of the invention

[0001] The present invention relates to a cable harness with shielded flat cables. 2. Description of related technology

[0002] Recently, shielded electrical wires have been proposed, in which each electrical wire is entirely covered with a shielding layer, such as metal foil or metal braid, to prevent malfunction of various types of electronic devices due to external noise. Furthermore, shielded flat cables have also been proposed, in which each flat cable is provided with a shielding layer. In this type of shielded flat cable, the covering portion of one conductor of a plurality of parallel conductors serving as a drain wire is removed, and the outer periphery of the conductor is coated with a shielding layer.An adhesive layer containing conductive filler or conductive paste is interposed between the shielding layer and the exposed conductor portion from which the covering portion is removed, and the drain wire is electrically connected to the shielding layer via this intervening substance (reference to JP 2008 - 4 464 A and JP 2011 - 165 393 A).

[0003] However, in the case where the shielded flat cables described in JP 2008 - 4 464 A and JP 2011 - 165 393 A are partially used in wire harnesses, the shielding performance still has room for improvement.

[0004] US 2016 / 0 134 038 A1 provides a wiring member comprising: a wiring substrate including wirings including a ground line, and a first insulating layer covering the wirings and having an opening portion exposing at least a part of the ground line; a first conductive plate disposed between a second insulating layer and a conductive interconnection layer disposed on the first insulating layer and electrically connected to the ground line through the opening portion; a second conductive layer including first and second electrically connectable portions with another member, the first interconnection portion being disposed between a portion of the first conductive layer and the wiring substrate to be electrically connected to the conductive interconnection layer of the first conductive layer;and a shielding member arranged to be electrically connected to the second connecting portion of the second conductive plate;

[0005] US 2007 / 0 095 557 A1 relates to a flat cable and an electronic device. The flat cable is electrically connected between a first circuit board and a second circuit board of the electronic device. The flat cable comprises an insulating material, a plurality of signal lines, at least one ground line, and a conductive foil. The signal lines are arranged within the insulating material. A first section of the ground line is exposed outside the insulating material. A second section of the ground line is enclosed by the conductive foil and contacted with the conductive foil.

[0006] DE 601 23 917 T2 relates to a shielded flat cable. The flat cable comprises a cable body including an insulating substrate, a plurality of conductors made of a metal film, such as a copper film, formed on the upper substrate, and an insulating protective layer for covering the upper conductor except for its two end portions, which are connection terminals with another circuit. The upper substrate and the upper insulating protective layer are made of a synthetic resin. The above conductors consist of a plurality of signal lines and a ground line arranged in parallel, and a non-insulating portion without the above insulating protective layer is formed on a portion of the ground line.

[0007] DE 102 18 400 A1 relates to a shielding arrangement on a shielding flat cable. During shielding, an aluminum foil sheath of the shielding flat cable is electrically connected to a grounding conductor of a grounding cable using an ultrasonic device and resin elements. Shielding cables of the shielding flat cable comprise conductors, each surrounded by an inner insulating sheath and arranged parallel to each other. The aluminum foil sheath, as a shielding sheath for a cable, surrounds the outer periphery of the two shielding cables and has a grounding conductor contact portion provided outside and surrounding a drain conductor. Summary of the invention

[0008] The present invention has been made to solve the above-described conventional problem, and an object of the present invention is to provide a wire harness capable of improving shielding performance.

[0009] A wiring harness according to the present invention is defined in claim 1 and comprises: a shielded flat cable, with: a plurality of conductors arranged parallel to each other; an insulating sheath portion covering the plurality of conductors and having a plurality of annular first portions, each of the plurality of annular first portions covering one conductor of the plurality of conductors, and at least one second portion connecting adjacent ones of the plurality of annular first portions, the insulating sheath portion having an exposed conductor portion exposing a portion of at least one conductor of the plurality of conductors; and a shielding member covering an outer periphery of the insulating sheath portion, wherein the part of the at least one conductor of the plurality of conductors is electrically connected to the shielding member via the exposed conductor portion; a first device configured to be connected to one end of the shielded flat cable; and a second device configured to be connected to the other end of the shielded flat cable, wherein a signal is transmitted from the first device to the second device through a different conductor of the plurality of conductors than the at least one conductor provided with the exposed conductor portion; wherein the at least one conductor of the plurality of conductors formed with the exposed conductor portion is connected to a ground at a position between the exposed conductor portion and the second device, and wherein the exposed conductor portion exposes an entire periphery of the portion of the at least one conductor of the plurality of conductors.

[0010] With this wiring harness, since at least one of the conductors provided with the exposed conductor portion is connected to the ground at a portion of the conductor on the second device side, rather than the portion provided with the exposed conductor portion, the induced current generated by the noise flowing through the at least one of the conductors flows in the direction toward the second device. Furthermore, since the signal flows in the conductor not provided with the exposed conductor portion from the first device to the second device, the induced current and the signal flow in the same direction. The inventors of the present invention have found that when the induced current generated by the noise is transmitted in the same direction as the direction of the signal and is grounded, the noise hardly affects the signal.Consequently, the shielding performance can be improved in the case where the induced current generated by the noise and the signal are made to flow in the same direction.

[0011] Further, in the wire harness according to the present invention, for example, the exposed conductor portion is formed such that a distance between the exposed conductor portion and the second device is smaller than a distance between the exposed conductor portion and the first device.

[0012] With this wiring harness, since the exposed conductor portion is formed on one side of the at least one conductor closer to the second device than to the first device, the induced current generated by the noise flows only a relatively short distance through the at least one conductor. Thus, the influence of the noise on the signal can be further reduced, and the shielding performance can be further improved.

[0013] Moreover, in the wire harness according to the present invention, for example, the exposed conductor portion is formed at a position away by a distance of 150 mm or less from an end portion of the shielding member connected to the second device.

[0014] With this wire harness, since the exposed conductor portion is formed at the portion of the shielding member which is away from the end portion of the shielding member on the second device side by a distance of 150 mm or less, the exposed conductor portion is formed at the portion closer to the second device side in the range of the conductor protected by the shielding member, thereby causing the induced current to flow only a further shorter distance through the at least one conductor, and the shielding performance can be further improved.

[0015] Still further, a wiring harness according to the present invention as defined in claim 4 comprises: a shielded flat cable, with: a plurality of conductors arranged parallel to each other; an insulating sheath portion covering the plurality of conductors and having a plurality of annular first portions, each of the plurality of annular first portions covering one conductor of the plurality of conductors, and at least one second portion connecting adjacent ones of the plurality of annular first portions, the insulating sheath portion having an exposed conductor portion exposing a portion of at least one conductor of the plurality of conductors; and a shielding member covering an outer periphery of the insulating sheath portion, wherein the part of the at least one conductor of the plurality of conductors is electrically connected to the shielding member via the exposed conductor portion; wherein the at least one conductor of the plurality of conductors formed with the exposed conductor portion is connected to a ground at a position closer to one end portion than to the other end portion of the at least one of the conductors; wherein in the shielded flat cable, the exposed conductor portion is formed at a position closer to one end portion than to the other end portion of the at least one of the conductors, and wherein the exposed conductor portion exposes an entire periphery of the portion of the at least one conductor of the plurality of conductors.

[0016] With this wiring harness, since the exposed conductor portion is formed on the side of the at least one conductor closer to the one end portion of the conductor to be grounded, the induced current generated by noise flows only a relatively short distance through the at least one conductor. Thus, the influence of the induced current on the signal can be reduced, and the shielding performance can be improved.

[0017] Moreover, in the wire harness according to the present invention, for example, the at least one conductor of the plurality of conductors is connected to the ground at a position between the exposed conductor portion and the one end portion of the at least one of the conductors of the plurality of conductors.

[0018] The present invention can provide a wire harness capable of improving shielding performance. Short description of the drawings Fig. 1 is a perspective view showing a wire harness with a shielded flat cable according to an embodiment of the present invention; Fig. 2 is a perspective view showing the details of the Fig. 1 shows the flat cable; Fig. 3A and Fig. 3B are schematic views showing, for example, a measuring device for measuring the influence of a noise on a signal; Fig. 3A shows a first example, and Fig. 3B shows a second example; Fig. 4 is a graph showing the results obtained by measuring the shielding effect for different frequency signals using the method described in Fig. 3A and Fig. 3B shows the measurement results obtained; Fig. 5A and Fig. 5B are schematic views showing how magnetic fields are generated by an induction current and a signal; Fig. 5A shows the case where the induction current and the signal flow in the same direction, and Fig. Figure 5B shows the case where the induction current and the signal flow in opposite directions; Fig. Figure 6 is a second graph showing the results obtained by measuring the shielding effect for different frequency signals using the method described in Fig. 3A and Fig. 3B, shows the measurement results obtained; and Fig. 7 is a graph showing the correlation between the shielding effect and the distance from the end portion of a shielding member to an exposed conductor portion. Detailed description of the exemplary embodiments

[0019] The present invention will be described below along with a preferred embodiment. Furthermore, although the illustration and description of some components are omitted in the embodiment described below, it goes without saying that known or well-known technologies are appropriately applied to the details of the omitted technologies within a range that does not cause a contradiction with the contents of the following description.

[0020] Fig. 1 is a perspective view showing a wire harness with a shielded flat cable according to the embodiment of the present invention. As shown in Fig. 1, a wire harness WH is formed by a shielded flat cable 1, a first device C1 and a second device C2.

[0021] The shielded flat cable 1 is formed by a flat cable 10 and a shielding member 20 wound around the outer circumference of the flat cable 10. Although the shielding member 20 is shown in a partially developed state for convenience of explanation in Fig. 1, it is assumed that the shielding element is not actually developed but wound on the flat cable 10.

[0022] The flat cable 10 is connected by a plurality (nine in Fig. 9) on conductors 11 arranged in parallel, and an insulating covering portion 12 for collectively covering the plurality of conductors 11. The first device C1 and the second device C2 are devices provided at both end sides of the shielded flat cable 1, and a signal is transmitted through the shielded flat cable 1 from the first device C1 to the second device C2 (transmitted in a unidirectional direction). Connectors not shown are attached to both ends of the shielded flat cable 1, and the shielded flat cable is connected to the first device C1 and the second device C2 via the connectors. Since the flat cable 10 is used, it is preferable that the connectors to be attached thereto should be pressure-contact connectors.

[0023] Fig. 2 is a perspective view showing the details of the Fig. 1. As shown in Fig. 1 and Fig. 2, an exposed conductor portion 13 obtained by exposing a part of a single conductor 11a is formed in the covering portion 12 of the flat cable 10. The conductor 11a is provided with the exposed conductor portion 13, and the end portion of the conductor on the second device C2 side is connected to the ground.

[0024] Furthermore, the Fig. 1 is a sheet material formed by at least two layers, including a first layer made of metal and a second layer located inside the first layer in a state where the shielding member is wound around the flat cable 10. The first layer is made of metal foil, such as copper foil. The second layer is made of a thermosetting resin, adhesive, or solvent containing a metal filler (such as silver filler). Furthermore, the second layer may be made of a conductive paste.

[0025] The shielding element 20 is wound around the flat cable 10 with the second layer on the inside. The shielding element 20 is heated in this state, causing the oil content in the thermosetting resin, adhesive, or solvent to evaporate and metallizing the second layer. In this metallized state, the second layer is connected to the conductor 11a via the exposed conductor portion 13, thereby electrically connecting the conductor 11a to the first layer of the shielding element 20.

[0026] In the shielded flat cable 1 configured as described above, external noise is received by the first layer of the shielding member 20, and the noise flows from the second layer to the conductor 11a via the exposed conductor portion 13 as an induced current, and is grounded at the end portion of the conductor 11a on the second device C2 side. The signal from the first device C1 is transmitted to the second device C2 via conductors 11b (conductor 11b excluding conductor 11a among the plurality of conductors 11) that are not provided with the exposed conductor portion 13.

[0027] The inventors of the present invention have found that in the case where the induced current generated by the noise is transmitted in the same direction as the direction of the signal and is grounded, as in the Fig. 1 and Fig. 2, the induced current hardly affects the signal, and the shielding performance of the shielded flat cable is enhanced. In this embodiment, the signal is transmitted from the first device C1 to the second device C2. Furthermore, the end portion of the conductor 11a serving as a drain wire on the second device C2 side is grounded. Thus, in the drain wire, the induced current flows from the exposed conductor portion 13 to the end portion of the drain wire on the second device C2 side, whereby the induced current flows in the same direction as the direction of the signal, from the first device C1 to the second device C2.

[0028] Moreover, the inventors of the present invention also found that in the case where the exposed conductor portion 13 is formed on the side of the conductor 11a serving as the drain wire, closer to the second device C2 (i.e., on the ground side) than to the first device C1, the shielding performance of the shielded flat cable is enhanced. Still further, the inventors also found that it is particularly preferable that the position of the exposed conductor portion 13 be away from the end portion of the shielding member 20 by a distance of 150 mm or less. Thus, in this embodiment, as shown in Fig. 1, the distance L from the end portion of the shielding member 20 (the end portion thereof on the second device C2 side) to the end portion of the exposed conductor portion 13 on the first device C1 side is set to 150 mm or less.

[0029] Next, for example, the shielding effect of the wire harness according to this embodiment will be described.

[0030] Fig. 3A and Fig. 3B are schematic views showing, for example, a measuring device for measuring the influence of a noise on a signal; wherein Fig. 3A shows a first example, and Fig. 3B shows a second example. As in Fig. 3A and Fig. 3B, the measuring device is roughly constituted by a spectrum analyzer SA and a copper tube CP. The shielded flat cable 1 is housed inside the copper tube CP. The spectrum analyzer SA is connected to the copper tube CP, and a signal corresponding to a noise is applied to the copper tube CP. The noise applied to the copper tube CP propagates through the space and reaches the shielding member 20 of the shielded flat cable 1. The induced current based on the noise, which has been transmitted to the shielding member 20, reaches the conductor 11a provided with the exposed conductor portion 13 and is grounded.

[0031] Further, a signal is supplied to the conductor 11b of the shielded flat cable 1, and based on the difference between the signal input to the shielded flat cable 1 and the signal output from the shielded flat cable 1, the spectrum analyzer SA calculates how much the noise affects the signal, thereby measuring the shielding effect (dB) of the cable.

[0032] Moreover, the Fig. 3A, one end of the shielded flat cable 1 is connected to the ground, thereby causing the induction current and the signal to flow in the same direction. On the other hand, in the example shown in Fig. 3B, the other end of the shielded flat cable 1 is connected to ground, thereby causing the induction current and the signal to flow in opposite directions. In both of the Fig. 3A and Fig. 3B, the distance from the end portion of the cable on the ground side to the exposed conductor portion 13, in which Fig. 3A, the same as the one in the example shown in Fig. Example shown in Figure 3B.

[0033] Fig. 4 is a graph showing the measurement results obtained by measuring the shielding effect for different frequency signals using the method described in Fig. 3A and Fig. 3B shown device. In Fig. 4, the solid line indicates the case where the induced current and the signal flow in the same direction, and the dashed line indicates the case where the induced current and the signal flow in the opposite directions.

[0034] As in Fig. As shown in Figure 4, the results indicate that in the signal frequency range from 100 kHz to 100 MHz, the shielding effect is higher when the induced current and the signal flow in the same direction than when the induced current and the signal flow in opposite directions. Thus, it was found that the shielding effect is enhanced by grounding the shielded flat cable so that the induced current generated by the noise is forced to flow in the same direction as the signal. This is due to the following reasons.

[0035] Fig. 5A and Fig. 5B are schematic views showing how magnetic fields are generated by the induction current and the signal; where Fig. 5A shows the case where the induction current and the signal flow in the same direction, and Fig. Figure 5B shows the case where the induced current and the signal flow in opposite directions.

[0036] As in Fig. As shown in Figure 5A, in the case where the induced current generated by the noise and the signal flow in the same direction, the magnetic field due to the induced current and the magnetic field due to the signal are generated in the same direction. Thus, the magnetic fields cancel each other between the conductor 11a serving as the lead wire and the conductor 11b serving as the signal line. As a result, it is assumed that the noise hardly affects the signal.

[0037] On the other hand, as in Fig. As shown in Figure 5B, in the case where the induced current and the signal flow in opposite directions, the magnetic field due to the induced current and the magnetic field due to the signal are generated in opposite directions. Thus, the magnetic fields reinforce each other between the conductor 11a serving as the lead wire and the conductor 11b serving as the signal line. As a result, it is assumed that the noise simply affects the signal.

[0038] As described above, the shielding effect can be increased by performing the grounding so that the induced current and the signal flow in the same direction.

[0039] Fig. Figure 6 is a second graph showing the results obtained by measuring the shielding effect for different frequency signals using the method described in Fig. 3A and Fig. 3B, shows the measurement results obtained. In Fig. 6, the induction current and the signal are forced to flow in the same direction. In Fig. 6, the solid line indicates the case where the exposed conductor portion 13 is formed on the ground side, and the dashed line indicates the case where the exposed conductor portion 13 is formed on the opposite side of the ground.

[0040] As in Fig. As shown in Figure 6, the results indicate that in the signal frequency range from 100 kHz to 100 MHz, the shielding effect is higher in the case where the exposed conductor portion 13 is formed close to the ground side than in the case where the exposed conductor portion 13 is formed away from the ground side. Thus, it was found that the shielding effect is enhanced in the case where the exposed conductor portion 13 is formed on the ground side.

[0041] This is because the induced current only flows a relatively short distance through the conductor 11a in the case where the exposed conductor portion 13 is formed close to the ground side. In other words, as the distance through which the induced current flows becomes short, the magnetic field generation distance due to the induced current also becomes short, whereby the induced current hardly affects the signal.

[0042] Fig. 7 is a graph showing the correlation between the shielding effect and the distance from the end portion of the shielding member 20 to the exposed conductor portion 13. Fig. Figure 7 shows the shielding effect at a signal frequency of 10MHz.

[0043] As in Fig. 7, when the distance L (see Fig. 1) From the end portion of the shielding member 20 to the exposed conductor portion 13 becomes longer, the shielding effect tends to be lower. Thus, to achieve, for example, a shielding effect of 20 dB, the above-mentioned distance is required to be 150 mm or less. Needless to say, a shielding effect of 20 dB reduces noise by 99% or more.

[0044] Thus, in the wire harness WH according to this embodiment, since the conductor 11a provided with the exposed conductor portion 13 is connected to the ground at the portion of the conductor on the second device C2 side, rather than the portion provided with the exposed conductor portion 13, the induced current generated by the noise and flowing through the conductor 11a flows in the direction toward the second device C2. Furthermore, since the signal flows from the first device C1 to the second device C2 through the conductor 11b not provided with the exposed conductor portion 13, the induced current and the signal flow in the same direction. The inventors of the present invention have found that in the case where the induced current is transmitted in the same direction as the direction of the signal and grounded, the noise hardly affects the signal.Consequently, the shielding performance can be improved by making the induced current and the signal flow in the same direction.

[0045] Moreover, since the exposed conductor portion 13 on the conductor 11a side is formed closer to the second device C2 than to the first device C1, the induced current generated by the noise flows only a relatively short distance through the conductor 11a. Thus, the influence of the noise on the signal can be further reduced, and the shielding performance can be further improved.

[0046] Still further, since the exposed conductor portion 13 is formed at the portion of the shielding member 20 away from the end portion of the shielding member on the second device C2 side by a distance of 150 mm or less, the exposed conductor portion 13 is formed at the portion closer to the second device C2 side, in the area of the conductor 11a protected by the shielding member 20, thereby causing the induced current to flow only a further shorter distance through the conductor 11a, and the shielding performance can be further improved.

[0047] For example, although the plurality of conductors 11 are arranged in parallel on a single plane in the flat cable 10 according to the above-mentioned embodiment, the plurality of conductors 11 may be arranged in parallel on two or more planes. Furthermore, the flat cable 10 is not limited to the flat cable with nine conductors 11 (nine-core cable), but may only have two or more conductors 11.

[0048] In addition, the exposed conductor portion 13 may be formed by exposing two or more conductors 11. According to the invention, the exposed conductor portion 13 is formed by exposing the entire circumference of the conductor 11a in Fig. 1. According to a non-inventive embodiment, the exposed conductor portion 13 may be formed by exposing only a part of the conductor 11a in the circumferential direction, such as only the upper surface side thereof.

[0049] Furthermore, the shielding member 20 is not limited to a two-layer structure consisting of the first layer and the second layer, but may have three or more layers. Furthermore, the ground connection is not limited to the end portion of the conductor 11a, but the ground connection may be made at a portion slightly in the middle of the conductor 11a, provided that the portion is in the vicinity of the end portion.

[0050] Further, although the wire harness WH according to this embodiment is used to perform signal transmission from the first device C1 to the second device C2, signal transmission is not limited to this manner. In the case where signal transmission is performed from the second device C2 to the first device C1, or is performed bidirectionally, the wire harness may be configured as described below. Specifically, in the case where one end portion of the conductor 11a serving as the drain wire is connected to the ground, it may be possible to adopt only a configuration in which the exposed conductor portion 13 on the conductor 11a side is formed closer to one end portion than to the other end portion. This is because, with this configuration, the shielding performance can also be improved.

Claims

[1] Wiring harness (WH), with: a shielded flat cable (10), with: a plurality of conductors (11) arranged parallel to one another; an insulating sheath portion (12) covering the plurality of conductors (11) and having a plurality of annular first portions, each of the plurality of annular first portions covering a conductor (11a, 11b) of the plurality of conductors (11), and at least one second portion connecting adjacent ones of the plurality of annular first portions, the insulating sheath portion (12) having an exposed conductor portion (13) exposing a part of at least one conductor (11a) of the plurality of conductors (11); and a shielding member (20) covering an outer periphery of the insulating sheath portion (12), wherein the part of the at least one conductor (11a) of the plurality of conductors (11) is electrically connected to the shielding member (20) via the exposed conductor portion (13); a first device (C1) configured to be connected to one end of the shielded flat cable (10); and a second device (C2) designed to be connected to the other end of the shielded flat cable (10), wherein a signal is transmitted from the first device (C1) to the second device (C2) through a different conductor (11b) of the plurality of conductors (11) than the at least one conductor (11a) provided with the exposed conductor portion (13); wherein the at least one conductor (11a) of the plurality of conductors (11) formed with the exposed conductor portion (13) is connected to a ground at a position between the exposed conductor portion (13) and the second device (C2), and wherein the exposed conductor portion (13) exposes an entire circumference of the part of the at least one conductor (11a) of the plurality of conductors (11). [2] The wire harness (WH) according to claim 1, wherein the exposed conductor portion (13) is formed such that a distance between the exposed conductor portion (13) and the second device (C2) is smaller than a distance between the exposed conductor portion (13) and the first device (C1). [3] A wire harness (WH) according to claim 2, wherein the exposed conductor portion (13) is formed at a position away by a distance of 150 mm or less from an end portion of the shielding member (20) connected to the second device (C2). [4] Wiring harness (WH), with: a shielded flat cable (10), with: a plurality of conductors (11) arranged parallel to one another; an insulating sheath portion (12) covering the plurality of conductors (11) and having a plurality of annular first portions, each of the plurality of annular first portions covering a conductor (11a, 11b) of the plurality of conductors (11), and at least one second portion connecting adjacent ones of the plurality of annular first portions, the insulating sheath portion (12) having an exposed conductor portion (13) exposing a part of at least one conductor (11a) of the plurality of conductors (11); and a shielding member (20) covering an outer periphery of the insulating sheath portion (12), wherein the part of the at least one conductor (11a) of the plurality of conductors (11) is electrically connected to the shielding member (20) via the exposed conductor portion (13); wherein the at least one conductor (11a) of the plurality of conductors (11) formed with the exposed conductor portion (13) is connected to a ground at a position closer to one end portion than to the other end portion of the at least one of the conductors (11a); wherein in the shielded flat cable (10), the exposed conductor portion (13) is formed at a position closer to one end portion than to the other end portion of the at least one of the conductors (11a), and wherein the exposed conductor portion (13) exposes an entire circumference of the part of the at least one conductor (11a) of the plurality of conductors (11). [5] A wiring harness (WH) according to claim 4, wherein the at least one conductor (11a) of the plurality of conductors (11) is connected to the ground at a position between the exposed conductor portion (13) and the one end portion of the at least one of the conductors (11a) of the plurality of conductors (11).

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