Composite cable and composite harness

Abstract

To provide a composite cable whose diameter can be made smaller, and a composite harness equipped with the composite cable and a connector.SOLUTION: A composite cable 1 comprises: a plurality of power lines 10 for supplying operating power to an electric brake unit 9; a plurality of first signal lines 11 which transmit a control signal for controlling the electric brake unit 9; a plurality of second signal lines 12 which transmit a detection signal of a wheel speed sensor 63; and a sheath 14 which collectively covers the plurality of power lines 10, the plurality of first signal lines 11, and the plurality of second signal lines 12. A signal line part 100 in which the plurality of first signal lines 11 and the plurality of second signal lines 12 are stranded and the plurality of power lines 10 are stranded inside the sheath 14, and the plurality of first signal lines 11 and the plurality of second signal lines 12 are collectively spirally stranded about the central axis C1 of the signal line part 100. A composite harness 2 comprises the composite cable 1, a first connector 21 and a second connector 22.SELECTED DRAWING: Figure 2

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 to a composite harness in which a connector is provided at an end of the composite cable. [Background technology]

[0002] Conventionally, a composite cable having a plurality of power lines and a plurality of signal lines has been used to connect devices. The composite cable described in Patent Document 1 is for an electric brake of an automobile, and one end side is fixed to the body or chassis, and the other end side is attached to a part around the wheel that vibrates up and down. This composite cable includes a pair of power lines, a signal line part formed by twisting together a first signal line and a second signal line, and a sheath that covers the pair of power lines and the signal line part. Each of the first signal line and the second signal line is a twisted pair wire formed by twisting together a pair of electric wires whose conductors are covered with an insulator. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-123143 A Summary of the Invention [Problem to be solved by the invention]

[0004] When one of the devices connected by the composite cable is a movable part, high bending durability and resistance to disconnection are required. In order to increase bending durability and resistance to disconnection, it is effective to reduce the outer diameter of the cable. However, in the cable described in Patent Document 1, the signal line part is configured by twisting pairs of twisted wires together, so the outer diameter of the signal line part becomes large. Therefore, the present invention aims to provide a composite cable that can be made thinner, and a composite harness including the composite cable and a connector. [Means for solving the problem]

[0005] In order to solve the above-mentioned problems, the present invention provides a composite cable comprising: a plurality of power lines for supplying operating power to a controlled device; a plurality of first signal lines for transmitting control signals for controlling the controlled device; a plurality of second signal lines for transmitting detection signals of a sensor for detecting a physical quantity; and a sheath for collectively covering the plurality of power lines, the plurality of first signal lines, and the plurality of second signal lines, wherein a signal line section in which the plurality of first signal lines and the plurality of second signal lines are twisted together and the plurality of power lines are twisted inside the sheath, and the plurality of first signal lines and the plurality of second signal lines are twisted together in a spiral shape around a central axis of the signal line section.

[0006] In addition, in order to solve the above-mentioned problems, the present invention provides a composite harness including the above-mentioned composite cable and a connector provided at an end of the composite cable. Effect of the Invention

[0007] According to the present invention, it is possible to reduce the diameter of the composite cable. [Brief description of the drawings]

[0008] [Figure 1] 1 is a schematic diagram showing a configuration example of a vehicle having a composite cable and a composite harness according to a first embodiment of the present invention. [Diagram 2] 4 is an explanatory diagram showing an example of the configuration of an electric brake unit together with a composite cable and a part of a composite harness. FIG. [Diagram 3] FIG. 2 is a cross-sectional view of a composite cable. [Figure 4] FIG. 4 is a cross-sectional view showing a configuration of a composite cable shown as a comparative example. [Diagram 5] FIG. 6 is an explanatory diagram showing the configuration of a composite cable and a composite harness according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [First embodiment] 1 is a schematic diagram showing a configuration example of a vehicle 3 having a composite cable 1 and a composite harness 2 according to a first embodiment of the present invention. The vehicle 3 has a wheel 4 having a metal wheel 41 and a rubber tire 42, a brake rotor 5 that rotates integrally with the wheel 41, a hub unit 6 that rotatably supports the wheel 4 and the brake rotor 5, a suspension device 7 that supports the hub unit 6 on a vehicle body 30, a general controller 8 that is a control device that performs overall control of the vehicle 3, and an electric brake unit 9 that brakes the wheel 4 according to an instruction from the general controller 8.

[0010] The suspension device 7 is configured to include a knuckle 71, an upper arm 72, a lower arm 73, a damper 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 has an outer wheel 61 attached to the knuckle 71, a hub wheel 62 rotatably supported relative to the outer wheel 61, and a wheel speed sensor 63 that detects the rotational speed of the wheel 4. The knuckle 71 has a first connecting portion 711 to which the upper arm 72 and the damper 74 are connected, a second connecting portion 712 to which the lower arm 73 is connected, and a mounting portion 713 to which the electric brake unit 9 is attached.

[0011] The wheel 41 and the brake rotor 5 are fixed to the hub wheel 62 of the hub unit 6 by a plurality of hub bolts 621. The wheel speed sensor 63 is attached to the outer wheel 61 and detects the rotational speed of the hub wheel 62 relative to the outer wheel 61 as the rotational speed of the wheel 4. Specifically, the wheel speed sensor 63 outputs, as a detection signal, a pulse signal having a pulse interval according to the rotational speed of the hub wheel 62 relative to the outer wheel 61. The overall 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 rotational speed of the wheel 4 detected by the wheel speed sensor 63. The electric brake unit 9 is a device controlled by the overall controller 8 and is a control target of the overall controller 8.

[0012] The electric brake unit 9, together with the wheel 4, the brake rotor 5, the hub unit 6, and the knuckle 71, moves up and down relative to the vehicle body 30 as the suspension spring 75 expands and contracts. A part of the composite cable 1 in the longitudinal direction is suspended in the air, and connects the electric brake unit 9 and the general controller 8.

[0013] 2 is an explanatory diagram showing an example of the configuration of the electric brake unit 9 together with a part of the composite cable 1 and the composite harness 2. The electric brake unit 9 includes a control unit 90 that communicates with the general controller 8 via the composite cable 1, an outer brake pad 91 and an inner brake pad 92, a caliper 93 to which the outer brake pad 91 is attached, a piston 94 to which the inner brake pad 92 is attached, a motor 95 that is a drive source of the electric brake unit 9, a reduction gear 96 that reduces the rotation of a motor shaft 951 that is an output shaft of the motor 95, a rotary-to-linear motion conversion mechanism 97 that converts the rotational motion of the output shaft 961 of the reduction gear 96 into the linear motion of the piston 94, a caliper bracket 98 that is fixed to the mounting portion 713 of the knuckle 71, and an inverter 99 that supplies a current to the motor 95. The caliper 93 is supported by the caliper bracket 98 and is movable parallel to the rotation axis of the wheel 4 relative to the caliper bracket 98.

[0014] The reducer 96 reduces the speed of rotation of the motor shaft 951 and transmits the torque of the motor 95 to a rotary-to-linear motion conversion mechanism 97. The rotary-to-linear motion conversion mechanism 97 is formed of, for example, a ball screw mechanism. When the motor 95 rotates due to a current supplied from the inverter 99, the outer brake pad 91 and the inner brake pad 92 are pressed toward the brake rotor 5 with a pressing force corresponding to the torque generated by the motor 95, and the wheel 4 is braked by the frictional force generated between the outer brake pad 91 and the inner brake pad 92 and the brake rotor 5.

[0015] 3 is a cross-sectional view of the composite cable 1. The composite cable 1 includes a plurality of power supply 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 transmitting detection signals of the wheel speed sensors 63, a fibrous interposer 13, and a hollow tubular sheath 14. In this embodiment, the composite cable 1 includes two power supply lines 10, two first signal lines 11, and two second signal lines 12.

[0016] One of the two power supply lines 10 is a positive power supply line and the other is a negative power supply line. Each of these power supply lines 10 is an insulated wire having a central conductor 101 covered with an insulator 102 made of insulating resin. The central conductor 101 is a stranded wire formed by twisting together a plurality of conductor wires 101a. The voltage supplied to the electric brake unit 9 by the two power supply lines 10 is, for example, DC 12V. The control unit 90 of the electric brake unit 9 includes an electric circuit that operates on a voltage obtained by transforming the voltage supplied to the electric brake unit 9 by the two power supply lines 10 using a DC-DC converter, and the inverter 99 switches the voltage supplied to the electric brake unit 9 by the two power supply lines 10 and outputs it to the motor 95.

[0017] Each of the two first signal wires 11 is an insulated wire having a central conductor 111 covered with an insulator 112 made of insulating resin. The central conductor 111 is a stranded wire formed by twisting together a plurality of conductor wires 111a. A command signal indicating the magnitude of the braking force to be generated by the electric brake unit 9 is transmitted from the general controller 8 to the control unit 90 of the electric brake unit 9 via the two first signal wires 11. The control unit 90 outputs a PWM signal to the inverter 99 so as to generate a braking force corresponding to the command signal, thereby controlling the motor 95.

[0018] Each of the two second signal wires 12 is an insulated wire having a central conductor 121 covered with an insulator 122 made of insulating resin. The central conductor 121 is a stranded wire formed by twisting together a plurality of conductor wires 121a. Information on the rotation speed of the wheels 4 obtained from the detection signal of the wheel speed sensor 63 transmitted by these second signal wires 12 is used in the overall controller 8 to control the electric brake unit 9, and is also used for controlling, for example, a power steering device and an engine or electric motor as a drive source of the vehicle 3.

[0019] The interposer 13 is a fibrous body such as aramid fiber or nylon fiber. The sheath 14 is made of a resin such as soft polyurethane having excellent flexibility and durability. The sheath 14 collectively covers the power supply wires 10, the first signal wires 11, the second signal wires 12, and the interposer 13. In the vicinity of the electric brake unit 9, the sheath 14 is removed, and the power supply wires 10, the first signal wires 11, and the second signal wires 12 are exposed from the sheath 14. In FIG. 2, the sheath 14 is indicated by a two-dot chain line, and the power supply wires 10, the first signal wires 11, and the second signal wires 12 are illustrated inside the sheath 14.

[0020] The multiple first signal wires 11 and the multiple second signal wires 12 are twisted together to form a signal wire section 100. The signal wire section 100 and the multiple power wires 10 are twisted together inside a sheath 14 to form an electric wire assembly 110. The multiple first signal wires 11 and the multiple second signal wires 12 are arranged along a central axis C of the signal wire section 100 shown in FIG. 1 The signal line portion 100 and the power lines 10 are twisted together in a spiral shape around the center line axis C of the composite cable 1. 2 The electric wire assembly 110 is spirally twisted around the center. A tape member 15 made of resin such as PET (Poly Ethylene Terephthalate) is wound around the outer periphery of the electric wire assembly 110. A shield layer made of a shield conductor such as a braided shield may be provided around the outer periphery of the signal line portion 100.

[0021] In FIG. 3, the direction in which the first signal lines 11 and the second signal lines 12 are twisted together, and the direction in which the signal line section 100 and the power lines 10 are twisted together are indicated by arrows A. 1 ,A 2 In the present embodiment, the twisting direction of the plurality of first signal wires 11 and the plurality of second signal wires 12 is the same as the twisting direction of the signal wire section 100 and the plurality of power wires 10. As a result, when the composite cable 1 is twisted, the twisting of the signal wire section 100 and the electric wire assembly 110 tightens and loosens together, distributing the load and improving durability against twisting. However, this is not limited to this, and the twisting direction of the plurality of first signal wires 11 and the plurality of second signal wires 12 may be reversed to the twisting direction of the signal wire section 100 and the plurality of power wires 10. In this case, the bending tendency of the composite cable 1 caused by the twisting can be suppressed.

[0022] The first signal line 11 and the second signal line 12 have common specifications such as outer diameter and material. In this embodiment, the two first signal lines 11 and the two second signal lines 12 are arranged on the central axis C. 1 The two first signal lines 11 are arranged alternately in the circumferential direction of the signal line portion 100 with the central axis C at the center. 1 and the two second signal lines 12 are arranged at positions sandwiching the central axis C. 1 Since the two first signal lines 11 and the two second signal lines 12 are alternately arranged in this manner, the direction of the magnetic field generated by the current flowing through the two first signal lines 11 is the same as the arrangement direction of the two second signal lines 12, and the direction of the magnetic field generated by the current flowing through the two second signal lines 12 is the same as the arrangement direction of the two first signal lines 11, so that crosstalk between the control signal and the detection signal of the wheel speed sensor 63 is suppressed.

[0023] However, the present invention is not limited to this, and two first signal wires 11 may be arranged adjacent to each other in the circumferential direction of the signal wire portion 100, and two second signal wires 12 may be arranged adjacent to each other in the circumferential direction of the signal wire portion 100. In this case, the two first signal wires 11 and the two second signal wires 12 can be easily separated in the terminal processing work of the composite cable 1, improving workability. Note that the two first signal wires 11 and the two second signal wires 12 have insulators 112, 122 of different colors, and terminal processing is performed based on these colors.

[0024] The composite harness 2 has connectors at the end of the composite cable 1 on the wheel 4 side and at the end on the general controller 8 side. In this embodiment, the signal line section 100 branches into two first signal lines 11 and two second signal lines 12 outside the sheath 14, a first connector 21 is provided at the terminals of the two power supply lines 10 and the two first signal lines 11, and a second connector 22 is provided at the terminals of the two second signal lines 12. The first connector 21 is attached to the electric brake unit 9, and the second connector 22 is attached to the wheel speed sensor 63. The end of the composite cable 1 on the general controller 8 side is provided with a connector 20 to be attached to the general controller 8, as shown in FIG. 1.

[0025] As shown in FIG. 1, an end of the sheath 14 on the wheel 4 side is fixed to a first connecting portion 711 of a knuckle 71 by a fixing device 70 near the electric brake unit 9. By fixing the sheath 14 near the electric brake unit 9, the length of the portions of the multiple power supply lines 10 and the first signal line 11 exposed from the sheath 14 is shorter than the length of the portions of the multiple second signal lines 12 exposed from the sheath 14. The multiple power supply lines 10 and the first signal line 11 extend from the end of the sheath 14 toward the electric brake unit 9, and the multiple second signal lines 12 extend from the end of the sheath 14 toward the wheel speed sensor 63. The twisting of the multiple first signal lines 11 and the multiple second signal lines 12 in the signal line section 100 is untwisted near the end of the sheath 14 outside the sheath 14.

[0026] The multiple power lines 10, the first signal line 11, and the second signal line 12 exposed from the sheath 14 may be covered with a tubular protective member. Also, a part of the first connector 21, together with a part of each of the multiple power lines 10 and the first signal line 11, may be covered with a molded resin.

[0027] 2, the wheel speed sensor 63 has a magnetic field detection element 631, a molded body 632 that seals the magnetic field detection element 631, and a plurality of electrode terminals 635, 636 connected to terminals of the magnetic field detection element 631 by electric wires 633, 634. The second connector 22 has connection terminals 221, 222 that are connected to the electrode terminals 635, 636 of the wheel speed sensor 63, respectively. The connection terminals 221, 222 are connected to central conductors 121 of the two second signal lines 12, respectively.

[0028] (Comparative Example) 4 is a cross-sectional view showing the configuration of a composite cable 1A shown as a comparative example. The composite cable 1A according to this comparative example has two power lines 10, two first signal lines 11, and two second signal lines 12, similar to the composite cable 1 according to the first embodiment, but the twisting configuration of the first signal lines 11 and the second signal lines 12 is different. In the composite cable 1A according to the comparative example, a first twisted pair 11A formed by twisting two first signal lines 11 and a second twisted pair 12A formed by twisting two second signal lines 12 are twisted together to form a signal line section 100A.

[0029] In the composite cable 1A according to the comparative example, the maximum outer diameter of the signal line portion 100A is equal to the total outer diameter of each of the two first signal lines 11 and each of the two second signal lines 12, and is larger than the outer diameter of the signal line portion 100 of the composite cable 1 according to the first embodiment. As a result, the outer diameter of the composite cable 1A is also larger than that of the composite cable 1 according to the first embodiment.

[0030] (Effects of the First Embodiment) According to the first embodiment described above, the plurality of first signal wires 11 and the plurality of second signal wires 12 are twisted together in a spiral shape, so that the outer diameter of the signal wire portion 100 and the composite cable 1 can be reduced, and the wiring property of the composite cable 1 is improved, and high bending durability and resistance to wire breakage are obtained. Also, in the first embodiment, the plurality of first signal wires 11 and the second signal wires 12 are arranged on the central axis C. 1 Since the first signal lines 11 and the wheel speed sensor 63 are alternately arranged in the circumferential direction about the center, crosstalk between the control signal transmitted by the first signal line 11 and the detection signal of the wheel speed sensor 63 is suppressed.

[0031] In the above first embodiment, the case where the detection signal of the wheel speed sensor 63 is transmitted through the second signal line 12 has been described. However, the detection signal of a sensor other than the wheel speed sensor 63 may be transmitted through the second signal line 12. Examples of such sensors include a current sensor that detects a current supplied to the motor 95 of the electric brake unit 9, a temperature sensor that detects the temperature of the motor 95, and a load sensor that detects the pressing force of the piston 94. In this case, the current supplied to the motor 95, the temperature of the motor 95, and the pressing force of the piston 94 are physical quantities detected by the respective sensors, and the overall controller 8 can use the detection signals of these sensors for the electric brake unit 9. In addition, for example, detection signals of an air pressure sensor that detects the air pressure of the tire 42 of the wheel 4 and a damper sensor that detects the operation amount of the damper 74 may be sent to the overall controller 8 via the electric brake unit 9 and a plurality of second signal lines 12.

[0032] [Second embodiment] Next, a second embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is an explanatory diagram showing the configurations of a composite cable 1B and a composite harness 2B according to the second embodiment of the present invention.

[0033] In the first embodiment, a case has been described in which the multiple second signal lines 12 of the composite cable 1 branch off from the multiple first signal lines 11 and are connected to the wheel speed sensor 63. In the present embodiment, however, at the end of the composite cable 1B on the wheel 4 side, a single connector 23 attached to the electric brake unit 9 is provided at the terminals of the multiple power supply lines 10, the multiple first signal lines 11, and the multiple second signal lines 12.

[0034] The composite harness 2B also includes a plurality of sensor signal wires 24 extending from the connector 23 and connected to the wheel speed sensor 63. Each of the plurality of sensor signal wires 24 is an insulated wire having a central conductor 241 covered with an insulator 242 made of insulating resin. At the ends of the plurality of sensor signal wires 24, a sensor connector 25 having connection terminals 251, 252 connected to electrode terminals 635, 636 of the wheel speed sensor 63, respectively, is provided, similar to the second connector 22 described in the first embodiment.

[0035] The connector 23 has a connector housing 230 made of insulating resin, and first to eighth terminals 231 to 238. The first to eighth terminals 231 to 238 are respectively connected to a plurality of power supply lines 10, a plurality of first signal lines 11, a plurality of second signal lines 12, and a plurality of sensor signal lines 24. The first to fourth terminals 231 to 234 are connected to terminals of a mating connector of the electric brake unit 9.

[0036] The fifth terminal 235 and the seventh terminal 237, and the sixth terminal 236 and the eighth terminal 238 are each electrically shorted by a shorting member 239. As a result, a detection signal of the wheel speed sensor 63 is sent to the general controller 8 from the multiple sensor signal lines 24 through the multiple second signal lines 12. Note that the central conductor 241 of each of the multiple sensor signal lines 24 and the central conductor 121 of each of the multiple second signal lines 12 may be directly connected by, for example, soldering. Also, the connection destination of the sensor connector 25 is not limited to the wheel speed sensor 63, and may be a sensor that detects other physical quantities, such as an air pressure sensor or a damper sensor.

[0037] The second embodiment also provides the same effect as the first embodiment. Since the first signal lines 11 and the second signal lines 12 are not branched, the power lines 10, the first signal lines 11, and the second signal lines 12 can be covered by the sheath 14 up to the vicinity of the connector 23, and damage to the power lines 10, the first signal lines 11, and the second signal lines 12 caused by flying stones or the like can be suppressed. In order to prevent the sensor signal lines 24 from being damaged by flying stones or the like, the sensor signal lines 24 may be covered by a tube-shaped protective member. A sheath covering the sensor signal lines 24 may also be provided.

[0038] (Summary of the embodiment) Next, the technical ideas grasped from the first and second embodiments explained above will be described by using the reference numerals and the like in these embodiments. However, the reference numerals and the like in the following description do not limit the components in the claims to the members and the like specifically shown in the embodiments.

[0039] [1] A control target device (electric brake unit 9) is provided with a plurality of power supply lines (10) for supplying operating power to the control target device (electric brake unit 9), a plurality of first signal lines (11) for transmitting a control signal for controlling the control target device (9), a plurality of second signal lines (12) for transmitting a detection signal of a sensor (wheel speed sensor 63) for detecting a physical quantity, and a sheath (14) for collectively covering the plurality of power supply lines (10), the plurality of first signal lines (11), and the plurality of second signal lines (12), wherein a signal line section (100) in which the plurality of first signal lines (11) and the plurality of second signal lines (12) are twisted together and the plurality of power supply lines (10) are twisted together inside the sheath (14), and the plurality of first signal lines (11) and the plurality of second signal lines (12) are aligned along a central axis (C 1 ) is twisted together in a spiral shape around the center of the composite cable (1, 1B).

[0040] [2] The plurality of first signal lines (11) and the plurality of second signal lines (12) are aligned along the central axis (C 1 The composite cable (1, 1B) according to the above [1], in which the wires (1, 1B) are alternately arranged in the circumferential direction around the wire (1) at the center.

[0041] [3] The signal line portion (100) is configured such that the two first signal lines (11) and the two second signal lines (12) are aligned along the central axis (C 1 The two first signal wires (11) are twisted together around the central axis (C 1 ) and the two second signal lines (12) are arranged at positions sandwiching the central axis line (C 1 The composite cable (1, 1B) according to the above [2] is arranged in a position sandwiching the

[0042] [4] The composite cable (1, 1B) described in [1] above, wherein the controlled device (9) is an electric brake unit that brakes the wheels (4).

[0043] [5] The composite cable (1, 1B) according to [4] above, wherein the sensor (63) is a wheel speed sensor that detects the rotational speed of the wheel (4).

[0044] [6] A composite harness (2, 2B) comprising the composite cable (1, 1B) according to any one of [1] to [5] above, and a connector provided at an end of the composite cable (1, 1B).

[0045] [7] The composite harness (2) described in [6] above, wherein the signal line portion (100) branches into the plurality of first signal lines (11) and the plurality of second signal lines (12) outside the sheath (14), a first connector (21) is provided at terminals of the plurality of power supply lines (10) and the plurality of first signal lines (11), and a second connector (22) is provided at terminals of the plurality of second signal lines (12).

[0046] [8] The composite harness (1B) described in [6] above, wherein one connector (23) is provided at terminals of the plurality of power supply lines (10), the plurality of first signal lines (11), and the plurality of second signal lines (12), and further comprising a plurality of sensor signal lines (24) extending from the connector (23) and connected to the sensor (63), and wherein the plurality of second signal lines (12) and the plurality of sensor signal lines (24) are electrically short-circuited.

[0047] Although the first and second embodiments of the present invention have been described above, these embodiments do not limit the invention according to the claims. It should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention. [Explanation of symbols]

[0048] 1,1B…Composite cable 10…Power line 100: signal line portion 11: first signal line 12: Second signal line; 14: Sheath 2, 2B... Composite harness 21... First connector 22...Second connector 23...Connector 24...Sensor signal line 4...Wheel 63...Wheel speed sensor (sensor) 8...General controller 9... Electric brake unit (controlled device) C 1 ...center axis line

Claims

1. A plurality of power lines for supplying operating power to the controlled device; a plurality of first signal lines for transmitting control signals for controlling the controlled device; a plurality of second signal lines for transmitting detection signals of sensors for detecting physical quantities; a sheath that collectively covers the plurality of power supply lines, the plurality of first signal lines, and the plurality of second signal lines; a signal line portion in which the plurality of first signal lines and the plurality of second signal lines are twisted together and the plurality of power lines are twisted together inside the sheath, the plurality of first signal lines and the plurality of second signal lines are collectively twisted in a spiral shape around a central axis of the signal line portion; Composite cable.

2. the plurality of first signal lines and the plurality of second signal lines are alternately arranged in a circumferential direction around the central axis line; The composite cable of claim 1 .

3. the signal line portion is formed by twisting two of the first signal lines and two of the second signal lines around the central axis line, Two of the first signal lines are disposed on either side of the central axis, and two of the second signal lines are disposed on either side of the central axis. The composite cable of claim 2.

4. The controlled device is an electric brake unit that brakes wheels. The composite cable of claim 1 .

5. The sensor is a wheel speed sensor that detects the rotation speed of the wheel. The composite cable according to claim 4.

6. A composite cable according to any one of claims 1 to 5; A connector provided at an end of the composite cable. Composite harness.

7. the signal line portion branches into the plurality of first signal lines and the plurality of second signal lines outside the sheath, a first connector is provided at terminals of the plurality of power supply lines and the plurality of first signal lines, and a second connector is provided at terminals of the plurality of second signal lines; 7. The composite harness of claim 6.

8. a connector is provided at each of terminals of the plurality of power supply lines, the plurality of first signal lines, and the plurality of second signal lines; a plurality of sensor signal lines extending from the connector and connected to the sensors; the second signal lines and the sensor signal lines are electrically short-circuited; 7. The composite harness of claim 6.

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