Composite cable and composite wire harness

Abstract

The invention provides a composite cable and a composite wire harness, the composite cable enables wires for transmitting control signals of a control object device to be redundant and the outer diameter of the cable to be reduced, and the composite wire harness is provided with the composite cable and a connector. A composite cable (1) is provided with: a plurality of power supply lines (10) that supply operation power to an electric brake unit (9); a first signal twisted wire (110) formed by twisting a plurality of first signal wires (11) for transmitting a control signal for controlling the electric brake unit; a second signal twisted wire (120) formed by twisting a plurality of second signal wires (12) for redundancy of the plurality of first signal wires; and a sheath (14) that covers the plurality of power supply lines, the plurality of first signal strands, and the plurality of second signal strands. The first signal stranded wire (110) and the second signal stranded wire are disposed apart from each other so as to sandwich the plurality of power supply wires. A composite wire harness (2) is provided with a composite cable (1), a wheel-side connector (21), and a vehicle-body-side connector (22).

Description

Technical Field

[0001] The present invention relates to a composite cable having a plurality of power lines and a plurality of signal lines, and a composite wire harness having a connector disposed at the end of the composite cable. Background Art

[0002] In the past, for example, in electric brake devices for vehicles, in order to improve reliability, the duplication and redundancy of equipment have been studied. Patent document 1 describes an electric brake device, in which a motor for applying braking force to the wheel, a first motor drive unit for driving a first winding group of the motor, and a second motor drive unit for driving a second winding group of the motor are provided on the wheel side, and a controller for controlling the first motor drive unit and the second motor drive unit is provided on the vehicle body side, the first motor drive unit and the controller are connected via a first communication line, and the second motor drive unit and the controller are connected via a second communication line.

[0003] In the electric brake device described in Patent Document 1, the wheel side and the vehicle body side are connected by a first communication line, a second communication line, and an electric wire for supplying power from the vehicle body side to the wheel side. Furthermore, when these two communication lines and the electric wire are covered with a sheath together to form a single cable, the outer diameter of the cable becomes thicker. Here, the cable for the electric brake is repeatedly bent in a part of the length direction due to the movement of the wheel relative to the vehicle body when the vehicle is running, so it is preferred that the cable has a thin outer diameter and high flexibility. That is, in the electric brake device described in Patent Document 1, if two communication lines and the electric wire for supplying power are formed into a single cable, the outer diameter of the cable becomes thicker due to the number of communication lines, the wiring property is reduced, and the cable may be easily broken due to repeated bending.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2018-30463 Summary of the invention

[0005] Therefore, an object of the present invention is to provide a composite cable capable of making electric wires for transmitting control signals for controlling a controlled device redundant and reducing the outer diameter of the cable, and a composite wire harness including the composite cable and a connector.

[0006] The present invention aims to solve the above-mentioned problems and provides a composite cable, which comprises: a plurality of power lines for supplying operating power to a controlled object device; a first signal strand formed by twisting a plurality of first signal lines for transmitting control signals for controlling the controlled object device; a second signal strand formed by twisting a plurality of second signal lines for redundancy of the plurality of first signal lines; and a sheath that covers the plurality of power lines, the plurality of first signal strands, and the plurality of second signal strands, the first signal strands and the second signal strands being separately arranged in a manner of clamping the plurality of power lines.

[0007] In order to solve the above-mentioned problems, the present invention provides a composite wire harness including the composite cable described above and a connector provided at an end of the composite cable.

[0008] Effects of the Invention

[0009] According to the present invention, it is possible to make redundant electric wires for transmitting control signals for controlling a controlled device and to reduce the diameter of a composite wire harness. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic configuration diagram showing a configuration example of a vehicle including a composite cable and a composite wire harness according to a first embodiment of the present invention.

[0011] Figure 2 This is an explanatory diagram showing a configuration example of an electric brake unit together with a part of a composite cable and a composite wire harness.

[0012] Figure 3 is a cross-sectional view of a composite cable.

[0013] Figure 4 It is an explanatory diagram showing a configuration example of a wheel-side connector, a counterpart connector of an electric brake unit that is fitted to the wheel-side connector, and a communication circuit section of a control section.

[0014] Figure 5 It is a cross-sectional view showing the structure of a composite cable shown as a comparative example.

[0015] Figure 6 It is an explanatory diagram showing the structure of a composite wire harness according to a second embodiment of the present invention.

[0016] Figure 7 It is a schematic configuration diagram showing a configuration example of a vehicle including a composite wire harness according to a third embodiment of the present invention.

[0017] Figure 8 This is a schematic configuration diagram showing a part of a wheel-side connector of a composite wiring harness according to a third embodiment, a sensor cable and a sensor connector, a part of a counterpart connector of an electric brake unit to which the wheel-side connector is attached, and a switching circuit in a control unit. DETAILED DESCRIPTION

[0018] [First embodiment]

[0019] Figure 1This is a schematic structural diagram showing a structural example of a vehicle 3 having a composite cable 1 and a composite wiring harness 2 according to a first embodiment of the present invention. The vehicle 3 has a wheel 4 having a metal rim 41 and a rubber tire 42; a brake disc 5 that rotates integrally with the rim 41; a hub unit 6 that supports the wheel 4 and the brake disc 5 in a manner that the wheel 4 and the brake disc 5 can rotate; a suspension device 7 that supports the hub unit 6 relative to a vehicle body 30; an integrated controller 8 as a control device that performs integrated control of the vehicle 3; and an electric brake unit 9 that brakes the wheel 4 according to an instruction from the integrated controller 8.

[0020] The suspension device 7 is configured to include a knuckle 71, an upper arm 72, a lower arm 73, a shock absorber 74, and a suspension spring 75. One end of each of the upper arm 72 and the lower arm 73 is connected to the knuckle 71, and the other end is connected to the vehicle body 30. The hub unit 6 includes an outer ring 61 mounted on the knuckle 71, a hub ring 62 supported in a rotatable manner relative to the outer ring 61, and a wheel speed sensor 63 for detecting the rotation speed of the wheel 4. The knuckle 71 includes a first connecting portion 711 connecting the upper arm 72 and the shock absorber 74, a second connecting portion 712 connecting the lower arm 73, and a mounting portion 713 for mounting the electric brake unit 9.

[0021] The wheel rim 41 and the brake disc 5 are fixed to the wheel hub 62 of the wheel hub unit 6 by a plurality of wheel hub bolts 621. The wheel speed sensor 63 detects the rotation speed of the wheel hub 62 relative to the outer ring 61 as the rotation speed of the wheel 4, and outputs a detection signal indicating the detection result to the integrated controller 8 through a sensor cable not shown. The integrated controller 8 controls the electric brake unit 9 based on information such as the amount of depression of the brake pedal by the driver of the vehicle 3 and the rotation speed of the wheel 4 detected by the wheel speed sensor 63. The electric brake unit 9 is a control object device of the integrated controller 8 that is controlled by the integrated controller 8.

[0022] The electric brake unit 9 moves vertically relative to the vehicle body 30 together with the wheel 4, brake disc 5, hub unit 6 and knuckle 71 as the suspension spring 75 expands and contracts. A portion of the composite cable 1 in the longitudinal direction is suspended in the air to connect the electric brake unit 9 to the integrated controller 8.

[0023] Figure 21 is an explanatory diagram showing a structural example of an electric brake unit 9 together with a composite cable 1 and a composite harness 2. The electric brake unit 9 includes: a control unit 90 communicating with the integrated controller 8 via the composite cable 1; an outer brake pad 911 and an inner brake pad 912; a brake caliper 92 to which the outer brake pad 911 is mounted; a piston 93 to which the inner brake pad 912 is mounted; an electric motor 94 as a driving source of the electric brake unit 9; a speed reducer 95 that reduces the rotation of the output shaft of the electric motor 94, that is, the motor shaft 941; a rotation-to-direct motion conversion mechanism 96 that converts the rotational motion of the output shaft 951 of the speed reducer 95 into the linear motion of the piston 93; a brake caliper bracket 97 fixed to the mounting portion 713 of the steering knuckle 71; and an inverter 98 that supplies current to the electric motor 94. The brake caliper 92 is supported on the brake caliper bracket 97 and can move in parallel with the rotation axis of the wheel 4 relative to the brake caliper bracket 97.

[0024] The speed reducer 95 reduces the rotation of the motor shaft 941 to transmit the torque of the motor 94 to the rotation-to-direct motion conversion mechanism 96. The rotation-to-direct motion conversion mechanism 96 is composed of, for example, a ball screw mechanism. When the motor 94 rotates by the current supplied from the converter 98, the outer brake pad 911 and the inner brake pad 912 are pressed against the brake disc 5 by the pressing force corresponding to the torque generated by the motor 94, and the wheel 4 is braked by the friction force generated between the outer brake pad 911 and the inner brake pad 912 and the brake disc 5.

[0025] Figure 3 : is a cross-sectional view of the composite cable 1. The composite cable 1 includes: a plurality of power lines 10 for supplying operating power to the electric brake unit 9; a plurality of first signal lines 11 for transmitting control signals for controlling the electric brake unit 9; a plurality of second signal lines 12 for redundancy of the plurality of first signal lines 11; a fibrous inclusion 13; and a hollow tubular sheath 14. In the present embodiment, the number of the power lines 10, the number of the first signal lines 11, and the number of the second signal lines 12 included in the composite cable 1 is two each.

[0026] One of the two power lines 10 is a positive power line, and the other is a negative power line. These power lines 10 are insulated wires formed by covering a center conductor 101 with an insulator 102 made of an insulating resin. The center conductor 101 is a stranded wire formed by twisting a plurality of conductor wires 101a. The voltage supplied to the electric brake unit 9 through the two power lines 10 is, for example, DC12V. The control unit 90 of the electric brake unit 9 has the following circuit, which operates by transforming the voltage supplied to the electric brake unit 9 through the two power lines 10 through a DC-DC converter, and the converter 98 switches the voltage supplied to the electric brake unit 9 through the two power lines 10 and outputs it to the motor 94.

[0027] The two first signal lines 11 are insulated wires formed by covering a center conductor 111 with an insulator 112 made of an insulating resin. The center conductor 111 is a stranded wire formed by twisting a plurality of conductor wires 111a. Similarly, the two second signal lines 12 are insulated wires formed by covering a center conductor 121 with an insulator 122 made of an insulating resin. The center conductor 121 is a stranded wire formed by twisting a plurality of conductor wires 121a. The first signal line 11 and the second signal line 12 have the same specifications such as outer diameter and material.

[0028] The two first signal lines 11 are twisted together to form a first signal twisted line 110. In addition, the two second signal lines 12 are twisted together to form a second signal twisted line 120. Figure 3 , arrow A1 indicates the twisting direction of the first signal wires 11 in the first signal twisted wire 110, and arrow A2 indicates the twisting direction of the second signal wires 12 in the second signal twisted wire 120. The twisting direction of the first signal wires 11 is the same as the twisting direction of the second signal wires 12.

[0029] The inclusions 13 are, for example, fibrous bodies such as aramid fibers and nylon fibers. The sheath 14 is made of, for example, a resin such as soft polyurethane having excellent flexibility and durability. The sheath 14 covers the plurality of power lines 10, the first signal strand 110, the second signal strand 120, and the inclusions 13. Near the electric brake unit 9, the sheath 14 is removed, and the plurality of power lines 10, the plurality of first signal lines 11, and the plurality of second signal lines 12 are exposed from the sheath 14. Figure 2 In FIG. 1 , a portion of the sheath 14 is indicated by a two-dot chain line, and the plurality of power lines 10 , the plurality of first signal lines 11 , and the plurality of second signal lines 12 inside the sheath 14 are illustrated.

[0030] The integrated controller 8 outputs a command signal indicating the magnitude of the braking force to be generated by the electric brake unit 9 to the two first signal lines 11 and the two second signal lines 12. The signals output to the two first signal lines 11 are the same as the signals output to the two second signal lines 12. The control unit 90 outputs a PWM signal to the converter 98 to control the motor 94 so that a braking force corresponding to the command signal is generated.

[0031] The plurality of power lines 10, the first signal strands 110 and the second signal strands 120 are twisted spirally inside the sheath 14 to form a wire assembly 100. A tape member 15 made of a resin such as PET (Poly Ethylene Terephthalate) is wound around the outer periphery of the wire assembly 100.

[0032] exist Figure 3In the figure, arrow A3 indicates the twisting direction of the plurality of power lines 10, the first signal strand 110, and the second signal strand 120 in the wire assembly 100. In the present embodiment, the twisting direction of the first signal strand 110, the twisting direction of the second signal strand 120, and the twisting direction of the wire assembly 100 are the same. Thus, when the composite cable 1 is twisted, the twisting of the first signal strand 110, the second signal strand 120, and the wire assembly 100 is tightened or loosened together so that the load can be dispersed, and the durability against twisting can be improved. However, this is not limited to the above, and the twisting direction of the first signal strand 110 and the second signal strand 120 can also be opposite to the twisting direction of the wire assembly 100. In this case, the bending tendency of the composite cable 1 caused by twisting can be suppressed.

[0033] The first signal stranded wire 110 and the second signal stranded wire 120 are arranged separately with a plurality of power lines 10 interposed therebetween. In other words, the first signal stranded wire 110, the power line 10 on one side, the second signal stranded wire 120, and the power line 10 on the other side are arranged in this order along the circumferential direction of the composite cable 1, with the central axis C of the composite cable 1 as the center. In the present embodiment, the distance between the two power lines 10 is smaller than the outer diameters of the first signal line 11 and the second signal line 12. Thus, it is possible to prevent the first signal stranded wire 110 and the second signal stranded wire 120 from approaching each other through the two power lines 10.

[0034] like Figure 1 As shown, the end of the sheath 14 on the wheel 4 side is fixed to the first connection part 711 of the steering knuckle 71 by the fixing member 70 near the electric brake unit 9. By fixing the end of the sheath 14 near the electric brake unit 9, the lengths of the multiple power lines 10, the multiple first signal lines 11, and the multiple second signal lines 12 exposed from the sheath 14 are shortened, and the lengths of the multiple power lines 10, the multiple first signal lines 11, and the multiple second signal lines 12 protected by the sheath 14 are lengthened. In addition, the multiple power lines 10, the first signal lines 11, and the second signal lines 12 exposed from the sheath 14 can also be covered with a tubular protective member.

[0035] The composite wire harness 2 includes a composite cable 1, a wheel-side connector 21 provided at one end of the composite cable 1, and a vehicle-side connector 22 provided at the other end of the composite cable 1. The wheel-side connector 21 is mounted on the electric brake unit 9. The vehicle-side connector 22 is mounted on the integrated controller 8. One ends of the plurality of power lines 10, the plurality of first signal lines 11, and the plurality of second signal lines 12 are connected to a terminal of the wheel-side connector 21, and the other ends are connected to a terminal of the vehicle-side connector 22.

[0036] Figure 4This is an explanatory diagram showing a configuration example of a wheel-side connector 21, a counterpart connector 99 of an electric brake unit 9 that is engaged with the wheel-side connector 21, and a communication circuit unit 900 of a control unit 90. The wheel-side connector 21 has a connector housing 210 made of an insulating resin and first to sixth terminals 211 to 216. A plurality of power lines 10, a plurality of first signal lines 11, and a plurality of second signal lines 12 are connected to the first to sixth terminals 211 to 216, respectively.

[0037] The counterpart connector 99 includes a connector housing 990 made of an insulating resin and first to sixth terminals 991 to 996 respectively connected to the first to sixth terminals 211 to 216 of the wheel-side connector 21. The first terminal 991 and the second terminal 992 of the counterpart connector 99 are respectively connected to the power pattern and the ground pattern of the substrate of the control unit 90, wherein the first terminal 991 and the second terminal 992 of the counterpart connector 99 are electrically connected to the first terminal 211 and the second terminal 212 of the wheel-side connector 21 to which the plurality of power lines 10 are connected.

[0038] exist Figure 4 In the example shown, the two first signal lines 11 are used as a normal system, and the two second signal lines 12 are used as a backup system. The communication circuit unit 900 is configured to include a first transceiver 901 and a first receiver 902 electrically connected to the two first signal lines 11, a second transceiver 903 and a second receiver 904 electrically connected to the two second signal lines 12, a first switching circuit 905, and a second switching circuit 906. The control unit 90 performs half-duplex communication with the integrated controller 8 via the communication circuit unit 900.

[0039] The CPU (processing unit) of the control unit 90 normally uses the first transceiver 901 and the first receiver 902 to communicate with the integrated controller 8. When communication with the integrated controller 8 cannot be carried out normally, the first switching circuit 905 and the second switching circuit 906 are switched to use the second transceiver 903 and the second receiver 904 to communicate with the integrated controller 8.

[0040] (Comparative Example)

[0041] Figure 51 is a cross-sectional view showing the structure of a composite cable 1A shown as a comparative example. The composite cable 1A of the comparative example has two power lines 10, a first signal line 11, and a second signal line 12, respectively, similarly to the composite cable 1 of the first embodiment, but the structure of twisting the plurality of first signal lines 11 and the second signal lines 12 is different. In the composite cable 1A of the comparative example, a first twisted pair 11A formed by twisting the two first signal lines 11 and a second twisted pair 12A formed by twisting the two second signal lines 12 are twisted to form a signal line portion 100A, and the signal line portion 100A and the two power lines 10 are twisted to form a wire assembly 100B.

[0042] In the composite cable 1A, the maximum outer diameter of the signal line portion 100A is the sum of the outer diameters of the two first signal lines 11 and the two second signal lines 12. The signal line portion 100A is further twisted with the two power lines 10, so that the cable outer diameter is larger than that of the composite cable 1 of the first embodiment.

[0043] (Effects of the First Embodiment)

[0044] According to the first embodiment described above, the first signal stranded wires 110 and the second signal stranded wires 120 are separately arranged with the plurality of power supply wires 10 interposed therebetween, so that the outer diameter of the composite cable 1 can be reduced, the wiring properties of the composite cable 1 can be improved, and high bending durability and break resistance can be obtained.

[0045] [Second embodiment]

[0046] Next, refer to Figure 6 A second embodiment of the present invention will be described. Figure 6 1 is an explanatory diagram showing the structure of a composite wiring harness 2A according to a second embodiment of the present invention. In the first embodiment, a case where a wheel-side connector 21 is provided at one end of a composite cable 1 is described. The composite wiring harness 2A according to the second embodiment has a first wheel-side connector 23 and a second wheel-side connector 24 mounted on an electric brake unit 9 at one end of the composite cable 1. The first wheel-side connector 23 is provided at the ends of a plurality of power lines 10 and a plurality of first signal lines 11, and the second wheel-side connector 24 is provided at the ends of a plurality of second signal lines 12.

[0047] The first wheel side connector 23 and the second wheel side connector 24 are arranged in a vertical direction. Figure 6 In the example shown, the second wheel-side connector 24 is mounted on the electric brake unit 9 below the first wheel-side connector 23 in the vertical direction. Thus, the second wheel-side connector 24 prevents flying stones generated by stones on the road surface being bounced off by the tire 42 from colliding with the first wheel-side connector 23. That is, the first wheel-side connector 23 is protected by the second wheel-side connector 24.

[0048] [Third Embodiment]

[0049] Next, refer to Figure 7 and Figure 8 , a third embodiment of the present invention is described. Figure 7 1 is a schematic structural diagram showing a structural example of a vehicle 3 having a composite wiring harness 2B according to a third embodiment of the present invention. The composite wiring harness 2B has the same composite cable 1 as the composite wiring harness described in the first embodiment, but the wiring structure of the peripheral parts of the hub unit 6, the steering knuckle 71 and the electric brake unit 9 is different from that of the composite wiring harness 2 of the first embodiment.

[0050] The composite wire harness 2B of the third embodiment includes: a wheel-side connector 25 provided at the end of the composite cable 1 on the wheel 4 side; and a sensor cable 26 extending from the wheel-side connector 25 to the wheel speed sensor 63 to transmit the detection signal of the wheel speed sensor 63. In this embodiment, a sensor connector 27 that can be attached to and detached from the wheel speed sensor 63 is provided at the front end of the sensor cable 26. However, the sensor cable 26 and the wheel speed sensor 63 may be integrated. That is, the wheel speed sensor 63 may be provided integrally at the front end of the sensor cable 26.

[0051] Figure 8 This is a schematic diagram showing a part of the wheel-side connector 25 of the composite harness 2B, the sensor cable 26 and the sensor connector 27, a part of the counterpart connector 99A of the electric brake unit 9 to which the wheel-side connector 25 is mounted, and switching circuits 907 and 908 in the control unit 90.

[0052] The sensor cable 26 includes: a plurality of first sensor signal lines 261, 262 for transmitting detection signals of the wheel speed sensor 63; a plurality of second sensor signal lines 263, 264 for redundancy of the plurality of first sensor signal lines 261, 262; and a sheath 265 for covering both the first sensor signal lines 261, 262 and the second sensor signal lines 263, 264. The sensor connector 27 includes a connector housing 270 formed of a molded resin, and a first terminal 271 and a second terminal 272 held in the connector housing 270. In the present embodiment, the number of the first sensor signal lines 261, 262 and the number of the second sensor signal lines 263, 264 are two, respectively.

[0053] The first sensor signal line 261, one of the first sensor signal lines 261 and 262, is connected to the first terminal 271 of the sensor connector 27, and the other first sensor signal line 262 is connected to the second terminal 272 of the sensor connector 27. In addition, the second sensor signal line 263, one of the second sensor signal lines 263 and 264, is connected to the first terminal 271 of the sensor connector 27, and the other second sensor signal line 264 is connected to the second terminal 272 of the sensor connector 27. That is, the two first sensor signal lines 261 and 262 and the two second sensor signal lines 263 and 264 are connected in parallel to the first terminal 271 and the second terminal 272 of the sensor connector 27.

[0054] The wheel speed sensor 63 includes a magnetic field detection element 631, a molded body 632 that seals the magnetic field detection element 631, and electrode terminals 635 and 636 connected to the terminals of the magnetic field detection element 631 through wires 633 and 634. The magnetic field detection element 631 outputs a pulse signal with a pulse interval corresponding to the rotation speed as a detection signal. The electrode terminals 635 and 636 are connected to the first terminal 271 and the second terminal 272 of the sensor connector 27, respectively.

[0055] The wheel side connector 25 has a sensor housing 250 and first to fourth sensor signal line terminals 251 to 254, and the first to fourth sensor signal line terminals 251 to 254 are respectively connected to the first sensor signal lines 261, 262 and the second sensor signal lines 263, 264 of the sensor cable 26. The counterpart side connector 99A of the electric brake unit 9 includes a connector housing 990 and first to fourth terminals 991A, 992A, 993A, 994A respectively connected to the first to fourth sensor signal line terminals 251 to 254 of the wheel side connector 21.

[0056] In the present embodiment, the control unit 90 of the electric brake unit 9 receives the detection signal of the wheel speed sensor 63 via the sensor connector 27 and the sensor cable 26, and transmits the wheel speed signal indicating the rotation speed of the wheel 4 obtained based on the received detection signal to the integrated controller 8 via the composite cable 1. More specifically, the number of pulses of the pulse signal output as the detection signal from the wheel speed sensor 63 is counted at predetermined intervals, and a signal indicating information on the counted number of pulses is transmitted to the integrated controller 8 as the wheel speed signal.

[0057] The control unit 90 normally transmits the wheel speed signal through the plurality of first signal lines 11. When the communication with the integrated controller 8 cannot be performed normally through the plurality of first signal lines 11, the control unit 90 transmits the wheel speed signal to the integrated controller 8 through the plurality of second signal lines 12. That is, normally, the plurality of first signal lines 11 transmit the wheel speed signal indicating the rotation speed of the wheel 4 in addition to the control signal for controlling the electric brake unit 9. When the communication cannot be performed normally through the plurality of first signal lines 11, the second signal line 12 of the backup system transmits the control signal for controlling the electric brake unit 9 and the wheel speed signal indicating the rotation speed of the wheel 4.

[0058] In addition to the wheel speed signal, the control unit 90 may also send detection signals of sensors other than the wheel speed sensor 63 to the integrated controller 8. Examples of such sensors include a current sensor for detecting the current supplied to the motor 94 of the electric brake unit 9, a temperature sensor for detecting the temperature of the motor 94, or a load sensor for detecting the pressing force of the piston 93.

[0059] In the present embodiment, the sensor cable 26 has the second sensor signal lines 263 and 264 for redundancy of the first sensor signal lines 261 and 262. Therefore, when the first sensor signal lines 261 and 262 are damaged, the control unit 90 can receive the detection signal of the wheel speed sensor 63 through the second sensor signal lines 263 and 264. The control unit 90 has second switching circuits 907 and 908 for switching whether to receive the detection signal of the wheel speed sensor 63 through the first sensor signal lines 261 and 262 or to receive the detection signal of the wheel speed sensor 63 through the second sensor signal lines 263 and 264.

[0060] According to the third embodiment described above, in addition to the effects of the first embodiment, a wheel speed signal indicating the rotation speed of the wheel 4 can be sent to the integrated controller 8 via the composite cable 1, and when the first sensor signal lines 261, 262 of the sensor cable 26 are damaged, the control unit 90 can receive the detection signal of the wheel speed sensor 63 via the second sensor signal lines 263, 264.

[0061] (Summary of Implementation Methods)

[0062] Next, the technical ideas grasped from the first to third embodiments described above are described by citing the reference numerals in these embodiments. However, each reference numeral in the following description does not limit the constituent elements in the patent protection scope to the components specifically shown in the embodiments.

[0063] [1] A composite cable (1) comprising: a plurality of power lines (10) for supplying operating power to a controlled device (electric brake unit 9); a first signal strand (110) formed by twisting a plurality of first signal lines (11) for transmitting a control signal for controlling the controlled device (9); a second signal strand (120) formed by twisting a plurality of second signal lines (12) for redundancy of the plurality of first signal lines (11); and a sheath (14) covering the plurality of power lines (10), the plurality of first signal strands (110), and the plurality of second signal strands (120), wherein the first signal strands (110) and the second signal strands (120) are separately arranged with the plurality of power lines (10) interposed therebetween.

[0064] [2] According to the composite cable 1 described in [1] above, the controlled device (9) is an electric brake unit that brakes a wheel.

[0065] [3] According to the composite cable (1) described in [2] above, the plurality of first signal lines (11) transmit a wheel speed signal indicating the rotation speed of the wheel (4) in addition to a control signal for controlling the control target device (9).

[0066] [4] A composite wire harness (2, 2A, 2B) comprising a composite cable (1) as described in any one of [1] to [3] above and a connector (21, 22, 23, 24, 25) provided at an end of the composite cable (1).

[0067] [5] A composite wiring harness (2B), comprising: the composite cable (1) described in [3] above; a connector (wheel-side connector 25) provided at an end of the composite cable (1); and a sensor cable (26) extending from the connector (25) to a wheel speed sensor (63) for detecting the rotation speed of the wheel (4) and transmitting a detection signal of the wheel speed sensor (63).

[0068] [6] According to the composite wiring harness (2B) described in [5] above, the sensor cable (26) has a plurality of first sensor signal lines (261, 262) for transmitting the detection signal of the wheel speed sensor (63) and a plurality of second sensor signal lines (263, 264) for redundancy of the plurality of first sensor signal lines (261, 262).

[0069] The first to third embodiments of the present invention are described above, but these embodiments do not limit the invention to which the patent protection scope relates. In addition, it should be noted that the combination of features described in the embodiments is not necessarily necessary for all means for solving the problems of the invention.

[0070] Description of Reference Numerals

[0071] 1…Composite cable

[0072] 10…Power cord

[0073] 100…Signal line

[0074] 11…First signal line

[0075] 110…First signal strand

[0076] 12…Second signal line

[0077] 120…Second signal wire

[0078] 14…Sheath

[0079] 2, 2A, 2B...composite wiring harness

[0080] 21…Wheel side connector

[0081] 22…Body side connector

[0082] 23…First wheel side connector

[0083] 24…Second wheel side connector

[0084] 25…Wheel side connector

[0085] 26…Sensor cable

[0086] 261, 262…First sensor signal line

[0087] 263, 264…Second sensor signal line

[0088] 4…Wheels

[0089] 63…Wheel speed sensor

[0090] 8…Integrated controller

[0091] 9: Electric brake unit (controlled device).

Claims

1. A composite cable, characterized in that: have: A plurality of power lines for supplying operating power to the controlled device; a first signal twisted wire formed by twisting a plurality of first signal wires for transmitting a control signal for controlling the control target device; A second signal twisted wire formed by twisting a plurality of second signal wires used for redundancy of the plurality of first signal wires; as well as a sheath covering the plurality of power lines, the plurality of first signal twisted wires, and the plurality of second signal twisted wires together; The first signal twisted wire and the second signal twisted wire are arranged separately with the plurality of power lines interposed therebetween.

2. The composite cable according to claim 1, characterized in that: The controlled device is an electric brake unit that brakes wheels.

3. The composite cable according to claim 2, characterized in that: The plurality of first signal lines transmit a wheel speed signal indicating a rotation speed of the wheel in addition to a control signal for controlling the controlled device.

4. A composite wire harness, characterized in that: have: The composite cable according to any one of claims 1 to 3; and A connector is provided at an end of the composite cable.

5. A composite wire harness, characterized in that: have: The composite cable according to claim 3; a connector disposed at an end of the composite cable; and A sensor cable extends from the connector to a wheel speed sensor that detects a rotation speed of the wheel, and transmits a detection signal of the wheel speed sensor.

6. The composite wire harness according to claim 5, characterized in that: The sensor cable includes a plurality of first sensor signal lines for transmitting detection signals of the wheel speed sensor and a plurality of second sensor signal lines for redundancy of the plurality of first sensor signal lines.

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