JP6688215B2 - Vehicle composite cable and vehicle harness - Google Patents

Description

  The present invention relates to a vehicle composite cable and a vehicle composite harness using the vehicle composite cable.

  Conventionally, it is connected to an electric parking brake dedicated cable for supplying a current to an electric parking brake mechanism for suppressing the rotation of the wheels after the vehicle is stopped, and an ABS sensor for measuring the rotational speed of the wheels while the vehicle is traveling. There is known a composite harness provided with a composite cable in which the ABS sensor cable and the above-described ABS sensor cable are integrated by a common sheath (see Patent Document 1).

  This type of composite harness has one end fixed to the vehicle body and the other end fixed to a wheel supported by the vehicle body via a suspension device. When the vehicle body moves up and down with respect to the road surface as the vehicle travels, the composite cable is bent. Therefore, the composite cable is required to have high flexibility. In the composite harness described in Patent Literature 1, the electric parking brake dedicated cable and the ABS sensor cable are not provided with a shield conductor for noise countermeasures, which improves flexibility and reduces weight.

Japanese Patent No. 5543331

  Due to the highly electronicization of vehicles in recent years, a plurality of sensors may be attached to the wheel side. However, when covering multiple signal lines that transmit the detection signals of multiple sensors with a sheath at a time, unless a shield conductor is provided for each of the multiple signal lines, crosstalk between the signal lines is likely to occur. Will end up.

  Therefore, according to the present invention, even if a pair of power supply lines that supply current to the electric parking brake device and a plurality of signal lines that are not covered by the shield conductor are collectively covered by a sheath, crosstalk between the signal lines is generated. An object of the present invention is to provide a vehicle composite cable capable of suppressing the above, and a vehicle composite harness including the vehicle composite cable.

The present invention, in order to solve the above problems, supplies a current to an electric parking brake device that generates a braking force after the vehicle is stopped, and a pair of parking brake power lines formed by covering the center conductor with an insulator, A first signal line for traveling, which is formed by twisting a pair of first insulated wires for transmitting a first electric signal when the vehicle is traveling and twisting a central conductor with an insulator; A second signal line for traveling, which is a twisted pair formed by twisting a pair of second insulated electric wires for transmitting a second electric signal when the vehicle is traveling and twisting a central conductor with an insulator, and the pair. And a sheath made of polyurethane that collectively covers the power line for the electric parking brake and the first and second signal lines for traveling, and the first electric signal detects the rotational speed of the wheel. Car The second electric signal is a detection signal of a vehicle state quantity indicating a traveling state of the vehicle that is different from the rotation speed of the wheel, and the pair of electric parking brake power supply lines is a signal for speed detection. , The outer diameter of each of the first and second insulated wires is larger than that of the first and second insulated wires, and the pair of electric parking brake power lines and the first and second signal lines for traveling are covered with shield conductors, respectively. However, the first and second traveling signal lines are separated by the pair of electric parking brake power lines, and are arranged with the pair of electric parking brake power lines interposed therebetween . The twisting direction of the pair of first insulated wires and the twisting direction of the pair of second insulated wires are the same direction, and the pair of first insulated wires and the pair of second insulated wires are the same. Wire, the twisting pitch is different from each other,
A composite cable for a vehicle is provided.

  In order to solve the above problems, the present invention provides the vehicle composite cable, the pair of electric parking brake power lines exposed from the sheath, the first traveling signal line, and the A composite harness for a vehicle, which has a connector attached to at least one of the ends of the second signal line for traveling.

  According to the vehicle composite cable and the vehicle composite harness of the present invention, it is possible to suppress crosstalk between signal lines.

It is a schematic diagram which shows the structure of the vehicle in which the composite harness which concerns on 1st Embodiment was used. It is a schematic diagram showing an example of composition of a peripheral part of a rear wheel. It is a block diagram which shows one specific example of a structure of a wire harness. It is the schematic which shows the one end part of the composite cable which comprises a wire harness. It is sectional drawing of a composite cable. (A) is explanatory drawing which shows the internal structure of the composite cable which concerns on 2nd Embodiment, (b) is sectional drawing of a composite cable. (A) is explanatory drawing which shows the internal structure of the composite cable which concerns on 3rd Embodiment, (b) is sectional drawing of a composite cable. It is sectional drawing of the composite cable which concerns on 4th Embodiment. It is sectional drawing of the composite cable which concerns on 5th Embodiment. (A) is sectional drawing of the composite cable which concerns on 6th Embodiment, (b) is explanatory drawing which shows the structural example of the braided shield of a composite cable.

[First Embodiment]
FIG. 1 is a schematic diagram showing a configuration of a vehicle in which the composite harness according to the present embodiment is used.

  The vehicle 1 has four tire houses 100 on a vehicle body 10, and two front wheels 11 and two rear wheels 12 are arranged in each tire house 100. In the present embodiment, vehicle 1 is a front-wheel drive vehicle, and front wheels 11 are driven by the driving force of a drive source (not shown) including an engine and an electric motor. That is, in the present embodiment, the front wheels 11 are drive wheels and the rear wheels 12 are driven wheels.

  The vehicle 1 also includes two electric parking brake devices 130 and a control device 14. The electric parking brake device 130 is provided corresponding to each of the two rear wheels 12, and is operated by a current supplied from the control device 14 to generate a braking force on the rear wheels 12. The control device 14 can detect the operation state of the parking brake operation switch 140 provided in the vehicle compartment, and the driver turns on / off the parking brake operation switch 140 to operate the electric parking brake device 130. It is possible to switch between an operating state and a non-operating state.

  For example, when the driver turns the parking brake operating switch 140 from the off state to the on state while the vehicle is stopped, the control device 14 outputs an operating current for operating the electric parking brake device 130 for a predetermined time (for example, 1 second). To do. As a result, the electric parking brake device 130 is activated to generate a braking force on the rear wheels 12. The operating state of the electric parking brake device 130 is maintained until a current is output from the control device 14 to bring the electric parking brake device 130 into the non-operating state. Thus, the electric parking brake device 130 mainly generates the braking force after the vehicle 1 is stopped.

  The controller 14 outputs a current for making the electric parking brake device 130 inoperative when the parking brake activation switch 140 is changed from the on state to the off state by the operation of the driver. The control device 14 supplies a current for deactivating the electric parking brake device 130 when the parking brake actuation switch 140 is turned off or when the accelerator pedal is depressed, for example. Output.

  Further, the front wheel 11 and the rear wheel 12 are provided with a wheel speed sensor 131 for detecting a wheel speed and an air pressure sensor 132 for detecting a tire air pressure. The wheel speed sensor 131 is known per se and has a magnetic field detection element for detecting the magnetic field of an annular magnetic encoder that rotates together with the front wheel 11 or the rear wheel 12, and the wheel speed sensor 131 changes the cycle of the direction of the magnetic field. The speed (the rotation speed of the front wheels 11 or the rear wheels 12) is detected. The air pressure sensor 132 has, for example, a diaphragm whose bending amount changes according to the tire air pressure, and outputs an electric signal corresponding to the bending amount of this diaphragm.

  The control device 14, the wheel speed sensor 131 and the air pressure sensor 132 of the front wheel 11 are electrically connected by a front wheel wire group 151 composed of a plurality of wires and a front wheel wire harness 152. The front wheel wire group 151 and the front wheel wire harness 152 are connected in a relay box 153 fixed to the vehicle body 10. The relay box 153 is arranged near each of the pair of left and right front wheels 11.

  The control device 14, the electric parking brake device 130 for the rear wheels 12, the wheel speed sensor 131, and the air pressure sensor 132 are electrically connected by the rear wheel wire group 154 including a plurality of wires and the rear wheel wire harness 2. Connected to each other. This rear wheel wire harness 2 is an aspect of the "composite harness" according to the present invention. The rear wheel wire group 154 and the rear wheel wire harness 2 are connected in a relay box 155 fixed to the vehicle body 10. The relay box 155 is arranged near each of the pair of left and right rear wheels 12.

  The front wheel wire group 151 is arranged in the wiring path 150 provided in the vehicle body 10 in a bundled state. Further, the rear wheel electric wire group 154 is also arranged in the wiring path 150 provided in the vehicle body 10 in a bundled state, similarly to the front wheel electric wire group 151.

  The front wheel wire harness 152 has one end connected to the wheel speed sensor 131 and the air pressure sensor 132 of the front wheel 11, and the other end housed in the relay box 153. The rear wheel wire harness 2 has one end connected to the electric parking brake device 130, the wheel speed sensor 131, and the air pressure sensor 132 of the rear wheel 12, and the other end housed in the relay box 155. Since the front wheel wire harness 152 and the rear wheel wire harness 2 are bent in accordance with the vertical movement of the front wheel 11 and the rear wheel 12 with respect to the vehicle body 10 as the vehicle 1 travels, high bending durability is required. Hereinafter, the rear wheel wire harness 2 is simply referred to as "wire harness 2".

  FIG. 2 is a schematic diagram showing a configuration example of the peripheral portion of the rear wheel 12. The rear wheel 12 is supported on the vehicle body 10 by a suspension device 16. The suspension device 16 includes an upper arm 161, a lower arm 162, a shock absorber 163, and a suspension spring 164. One end of each of the upper arm 161 and the lower arm 162 is connected to the knuckle 165, and the other ends thereof are connected to the vehicle body 10. The outer ring 171 of the hub unit 17 of the rear wheel 12 is fixed to the knuckle 165. The upper arm 161 is connected to the first mounting portion 165a of the knuckle 165 together with the shock absorber 163, and the lower arm 162 is connected to the second mounting portion 165b of the knuckle 165.

  The suspension spring 164 is coaxially arranged on the outer periphery of the shock absorber 163 and expands and contracts according to the vertical movement of the vehicle body 10 with respect to the road surface. As the shock absorber 163 expands and contracts, the upper arm 161 and the lower arm 162 swing with respect to the vehicle body 10.

  Further, the knuckle 165 is provided with a third mounting portion 165c so that the electric parking brake device 130 is fixed to the third mounting portion 165c. The electric parking brake device 130 has a main body 130a, a caliper 130b, and a brake pad 130c fixed to the caliper 130b.

  The hub unit 17 has an outer ring 171 and a hub ring 172 rotatably supported by the outer ring 171. A wheel mounting flange 172a is provided on the hub wheel 172, and the rear wheel 12 is mounted on the wheel mounting flange 172a. Between the inner peripheral surface of the outer ring 171 of the hub unit 17 and the outer peripheral surface of the hub ring 172, a plurality of rolling elements (not shown) are held and held by a cage.

  The disc-shaped brake rotor 18 is fixed to the wheel mounting flange 172a of the hub wheel 172 together with the wheel 120 of the rear wheel 12. The brake rotor 18 integrally includes a friction portion 18a with which the brake pad 130c of the electric parking brake device 130 is frictionally engaged, and a fixed portion 18b fixed to the wheel mounting flange 172a of the hub wheel 172. One side surface of the friction portion 18a faces the brake pad 130c of the electric parking brake device 130. When the electric parking brake device 130 operates, the caliper 130b is drawn into the main body portion 130a, and the brake pad 130c is pressed against the friction portion 18a of the brake rotor 18. As a result, a frictional force is generated between the brake pad 130c and the brake rotor 18, and this frictional force becomes the braking force of the vehicle 1.

  Tires 121 are attached to the wheels 120. The tire 121 is a rubber tire in which a reinforcing material or the like is mixed with a rubber material made of synthetic rubber or natural rubber. The air pressure sensor 132 includes a detection element 132a that emits a radio wave signal according to the air pressure of the tire 121, and an antenna element 132b that receives the radio wave signal transmitted from the detection element 132a. The detection element 132a is attached to the wheel 120 and rotates with the rear wheel 12. The antenna element 132b is fixed to a non-rotating member that does not rotate as the rear wheel 12 rotates. Although the antenna element 132b is fixed to the knuckle 165 that is a non-rotating member in the present embodiment, the antenna element 132b may be fixed to the vehicle body 10, for example.

  The radio wave signal transmitted from the detection element 132a is converted into an electric signal by the antenna element 132b and transmitted to the control device 14 via the wire harness 2. When the air pressure detected by the air pressure sensor 132 is lower than a predetermined value, the control device 14 issues a warning to the driver by a lamp display or an alarm sound.

(Structure of wire harness 2)
FIG. 3 is a configuration diagram showing a specific example of the configuration of the wire harness 2. FIG. 4 is a schematic view showing one end of the composite cable 2A that constitutes the wire harness 2. 5A is a cross-sectional view of the composite cable 2A, FIG. 5B is a cross-sectional view of an insulated wire 31 that constitutes the first signal line 30, and FIG. 5C is a cross-sectional view of the power supply line 21. FIG. 5D is a sectional view of the insulated wire 41 that constitutes the second signal line 40.

  In FIG. 3, the rear wheel 12 side end is shown on the left side of the drawing, and the relay box 155 side end is shown on the right side of the drawing. In the following description, the rear wheel 12 side end of the wire harness 2 is referred to as “one end”, and the relay box 155 side end is referred to as “the other end”.

  The composite cable 2A includes a pair of power supply lines 21 and 22, a first signal line 30 made of a twisted pair line, a second signal line 40 also made of a twisted pair line, a pair of power supply lines 21 and 22, and a first and a second line. It has a sheath 20 that collectively covers the second signal lines 30 and 40, and an inclusion 5 housed in the sheath 20.

  The first power supply connector 23 for connection with the electric parking brake device 130 is attached to one end of the pair of power supply lines 21 and 22, and the relay box 155 is attached to the other end of the pair of power supply lines 21 and 22. A second power supply connector 24 for connection with the rear wheel electric wire group 154 is attached.

  A wheel speed sensor 131 is attached to one end of the first signal line 30, and a first signal line connector 33 for connection with a rear wheel wire group 154 in the relay box 155 is attached to the other end. It is installed. The second signal line 40 has an antenna element connection connector 43 attached to one end of the second signal line 40 for connection with the antenna element 132b of the air pressure sensor 132, and the other end of the electric wire for the rear wheel in the relay box 155. A second signal line connector 44 for connection with the group 154 is attached.

  The wire harness 2 includes a composite cable 2A, a first power supply connector 23, a second power supply connector 24, a wheel speed sensor 131, a first signal line connection connector 33, an antenna element connection connector 43, and a second signal line connection connector 44. It is composed by.

  The pair of power supply lines 21 and 22 are used to supply current to the electric parking brake device 130. The first signal line 30 is used to transmit the detection signal of the wheel speed sensor 131 to the control device 14. Further, the second signal line 40 is used to transmit the detection signal of the air pressure sensor 132 to the control device 14.

  That is, the first signal line 30 and the second signal line 40 transmit the detection signal of the vehicle state quantity indicating the traveling state of the vehicle 1 to the control device 14 when the vehicle 1 is traveling. The detection signal of the wheel speed sensor 131 transmitted by the first signal line 30 is a signal for detecting the wheel speed of the rear wheels 12, and is one specific example of the “first electric signal” of the present invention. The detection signal of the air pressure sensor 132 transmitted by the second signal line 40 is a specific example of the “second electric signal” of the present invention.

  The inclusion 5 is provided inside the sheath 20 between the pair of power supply lines 21 and 22 and the first and second signal lines 30 and 40. The inclusions 5 bring the outer peripheral surface 20a of the sheath 20 closer to a circular shape in a cross section orthogonal to the central axis of the composite cable 2A, and enhance the cabling property of the composite cable 2A. Further, the inclusion 5 prevents the sheath 20, the pair of power supply lines 21 and 22, the first signal line 30, and the second signal line 40 from rubbing against each other when the composite cable 2A is bent. Therefore, the bending resistance of the composite cable 2A is improved.

  The sheath 20 is made of an insulative resin, and specifically, soft polyurethane having excellent flexibility and durability can be particularly suitably used as a material thereof. As shown in FIG. 5A, when the outer diameter of the sheath 20 is D and the thickness is t, D is 8.0 to 10.0 mm and t is 1.0 to 2.0 mm.

The pair of power supply lines 21 and 22 are insulated electric wires in which the central conductors 210 and 220 each made of a conductor having good conductivity such as copper are covered with insulators 211 and 221 made of an insulating resin. The insulators 211 and 221 are made of, for example, crosslinked PE (polyethylene) or flame-retardant crosslinked PE (polyethylene). Of the pair of power supply lines 21 and 22, the outer diameter of the center conductor 210 of one power supply line 21, the thickness of the insulator 211, and the outer diameter of the insulator 211 are the same as those of the center conductor 220 of the other power supply line 22. It has the same diameter, the thickness of the insulator 221, and the outer diameter of the insulator 221. As shown in FIG. 5C, if the outer diameter of the central conductor 210 of one power supply line 21 is D ₀₁ , the thickness of the insulator 211 is t ₀ , and the outer diameter of the insulator 211 is D ₀₂ , then D ₀₁ Is 1.8 to 2.3 mm, t ₀ is 0.3 to 0.5 mm, and D ₀₂ is 2.9 to 3.1 mm.

  The first signal line 30 is a twisted pair wire formed by twisting a pair of insulated wires 31 and 32 at a predetermined twist pitch. Of the pair of insulated wires 31 and 32, one insulated wire 31 is formed by covering the central conductor 310 made of a conductive wire having good conductivity such as copper with an insulator 311 made of an insulating resin, and the other insulated wire. Similarly, 32 is formed by covering the central conductor 320 made of a conductive wire having good conductivity such as copper with an insulator 321 made of an insulating resin. The central conductors 310 and 320 of the insulated wires 31 and 32 are stranded wires composed of a plurality of element wires. The insulators 311 and 321 are made of, for example, crosslinked PE (polyethylene) or flame-retardant crosslinked PE (polyethylene).

The outer diameter of the center conductor 310 of one insulated wire 31, the thickness of the insulator 311 and the outer diameter of the insulator 311 and the outer diameter of the center conductor 320 of the other insulated wire 32, the thickness of the insulator 321 and The outer diameter of the insulator 321 is common. That is, one of the insulated wires 31 and 32 has common specifications. As shown in FIG. 5B, if the outer diameter of the central conductor 310 of one insulated wire 31 is D ₁₁ , the thickness of the insulator 311 is t ₁ , and the outer diameter of the insulator 311 is D ₁₂ , then D ₁₁ Is 0.6 to 0.9 mm, D ₁₂ is 1.3 to 1.6 mm, and t ₁ is 0.25 to 0.4 mm.

  The second signal line 40 is a twisted pair wire formed by twisting a pair of insulated wires 41 and 42 at a predetermined twist pitch. The second signal line 40 has the same twist pitch and twist direction as the twist pitch and twist direction of the first signal line 30, and is configured similarly to the first signal line 30.

  Specifically, of the pair of insulated electric wires 41, 42 of the second signal line 40, one insulated electric wire 41 isolates the central conductor 410 made of a conductive wire of good conductivity such as copper from the insulating resin made of an insulating resin. The other insulated wire 42 is also formed by covering the central conductor 420 made of a conductive wire having good conductivity such as copper with the insulator 421 made of an insulating resin. The central conductors 410, 420 of the insulated wires 41, 42 are stranded wires made of a plurality of strands, and the insulators 411, 421 are made of, for example, crosslinked PE (polyethylene) or flame-retardant crosslinked PE (polyethylene).

In the second signal line 40, the outer diameter of the center conductor 410 of one insulated wire 41, the thickness of the insulator 411, and the outer diameter of the insulator 411, and the outer diameter of the center conductor 420 of the other insulated wire 42, insulation The thickness of the body 421 and the outer diameter of the insulator 421 are common. That is, the one insulated wire 41, 42 has common specifications. As shown in FIG. 5 (d), one of the insulating D ₂₁ the outer diameter of the center conductor 410 of the wire 41, ₂ thicknesses t- insulator 411, the outer diameter of the insulator 411 when the D _22, D ₂₁ is 0.7 to 1.0 mm, D ₂₂ is 1.4 to 1.8 mm, and t ₂ is 0.25 to 0.4 mm.

In the present embodiment, the outer diameter (thickness) D ₁₂ of the pair of insulated wires 31 and 32 of the first signal line 30 and the outer diameter (thickness of the pair of insulated wires 41 and 42 of the second signal line 40 D) is equivalent to D ₂₂ . Specifically, the ratio of D ₂₂ of _{D 12 (D 12 / D 22} ) is 0.8 to 1.2. A more desirable range of the ratio of D ₁₂ to D ₂₂ (D ₁₂ / D ₂₂ ) is 0.9 or more and 1.1 or less.

  Note that, in FIG. 5A, when the composite cable 2A is viewed in the longitudinal direction from the illustrated cross section, the pair of insulated wires 31 and 32 of the first signal line 30 and the pair of insulated wires of the second signal line 40 are insulated. The outer edge of the range where the electric wires 41 and 42 exist is shown by a broken line.

  In the composite cable 2A, one end of the sheath 20 is fixed to a non-rotating member that does not rotate as the rear wheel 12 rotates. In the present embodiment, as shown in FIG. 2, one end of the sheath 20 is fixed to the knuckle 165 by the fixing tool 19. However, not limited to this, one end of the sheath 20 does not rotate with the rotation of the rear wheel 12 and moves vertically with respect to the vehicle body 10 together with the rear wheel 12 as the suspension spring 164 expands and contracts. It should be fixed to.

  The first signal line 30 is not covered by the shield conductor. The second signal line 40 is also not covered with the shield conductor. Furthermore, the pair of power supply lines 21 and 22 are not covered with the shield conductor. That is, between the pair of insulated wires 31 and 32 of the first signal line 30 and the pair of power supply lines 21 and 22, and between the pair of insulated wires 41 and 42 of the second signal line 40 and the pair of power supply lines 21, A conductive member that shields electromagnetic waves is not disposed between the first and second electrodes 22 except for the inclusion 5.

  This is because the electric current mainly flows through the pair of power supply lines 21 and 22 while the vehicle 1 is stopped, and the electric signals transmitted through the first and second signal lines 30 and 40 are mainly during the traveling of the vehicle 1. Therefore, it is not necessary to provide a shield conductor between the first signal line 30 and the pair of power supply lines 21 and 22, and between the second signal line 40 and the pair of power supply lines 21 and 22. It focuses on that.

  That is, when a current flows through the pair of power supply lines 21 and 22, electromagnetic waves generated by the current flow through the first signal line 30, the potential difference between the pair of insulated wires 31 and 32, and the second signal line 40. Although it may affect the potential difference between the pair of insulated wires 41, 42, the control device 14 outputs the electric signals of the first and second signal lines 30, 40 while the vehicle 1 at a vehicle speed of zero is stopped. It can be ignored, and the traveling of the vehicle 1 can be prevented from being adversely affected. Further, since the first and second signal lines 30 and 40 are not covered with the shield conductor, the flexibility and flexibility of the composite cable 2A are increased, and the weight and cost of the composite cable 2A are reduced. Can also contribute.

  Further, in the present embodiment, the first signal line 30 and the second signal line 40 are separated by the pair of power supply lines 21 and 22. In other words, the space inside the sheath 20 is partitioned by the pair of power supply lines 21 and 22 into a housing space for the first signal line 30 and a housing space for the second signal line 40.

  This is because, as described above, by not covering the first and second signal lines 30 and 40 with the shield conductor, crosstalk occurs between the first signal line 30 and the second signal line 40. In consideration of the ease of configuration, the composite cable 2A is configured so that the pair of power supply lines 21 and 22 are sandwiched between the first signal line 30 and the second signal line 40 to suppress crosstalk. It was done. That is, by separating the first signal line 30 and the second signal line 40 by the pair of power supply lines 21 and 22, crosstalk can be caused between the first signal line 30 and the second signal line 40. By keeping the distance over the distance that can occur, crosstalk between the first signal line 30 and the second signal line 40 is suppressed.

  Specifically, the distance between the pair of power supply lines 21 and 22 is such that the thickness of the pair of insulated wires 31 and 32 of the first signal line 30 and the pair of insulated wire 41 of the second signal line 40, The pair of insulated wires 31 and 32 of the first signal line 30 and the pair of insulated wires 41 and 42 of the second signal line 40 are made smaller than the thickness of 42 so as not to come into direct contact with each other. There is. In the example shown in FIG. 5A, since the pair of power supply lines 21 and 22 are in contact with each other, this interval is zero. Further, since the center conductors 210 and 220 of the pair of power supply lines 21 and 22 are conductors, a certain shield effect can be expected, and the shield effect of the center conductors 210 and 220 also suppresses crosstalk.

In the present embodiment, as described above, the outer diameter D ₁₂ of the pair of insulated wires 31 and 32 of the first signal line 30 and the outer diameter D ₁₂ of the pair of insulated wires 41 and 42 of the second signal line 40. _{Since 22} is equivalent to the pair of power supply lines 21 and 22 in the central portion of the sheath 20 in the arrangement direction of the first signal line 30 and the second signal line 40 in the cross section of the composite cable 2A, The relative positional relationship between the power supply lines 21 and 22 and the first and second signal lines 30 and 40 is stable. As a result, the above effect becomes more remarkable.

Further, as shown in FIG. 5A, in the present embodiment, regions A ₁₁ and A ₁₂ surrounded by the pair of power supply lines 21 and 22, the first signal line 30, and the second signal line 40. Is a space, and the inclusions 5 are not filled in the regions A ₁₁ and A ₁₂ . This facilitates terminal processing of the composite cable 2A.

That is, when the composite cable 2A is terminated, a part of the sheath 20 is cut off to expose the pair of power supply lines 21 and 22, the first and second signal lines 30 and 40, and the inclusions 5. Further, it is necessary to remove the inclusions 5 exposed from the end of the sheath 20, but at this time, if the inclusions 5 are filled in the regions A ₁₁ and A ₁₂ , the work of removing the inclusions 5 is performed. The pair of power supply lines 21 and 22 and the first and second signal lines 30 and 40 interfere with each other, which makes it difficult. Therefore, in the present embodiment, by not filling the areas A ₁₁ and A ₁₂ surrounded by the first signal line 30 and the second signal line 40 with the inclusions 5, the terminal treatment of the composite cable 2A is easy. It has become.

As the inclusion 5, various fibrous materials such as polypropylene yarn, aramid fiber, nylon fiber, or fiber-based plastic, which are generally used as an inclusion in a cable, or paper or cotton thread can be used. In the embodiment, the inclusion 5 contains the artificial polypeptide fiber. This artificial polypeptide fiber is also called a spider silk fiber, and is an artificial fiber containing a polypeptide derived from a natural spider silk protein as a main component. For example, the stress is 350 to 628.7 MPa and the toughness is 138 to 265. It is 4 MJ / m ³ . By including the artificial polypeptide fiber in the inclusion 5, the strength of the composite cable 2A can be increased.

  Further, the sheath 20 may contain the above-mentioned artificial polypeptide fiber. Since the strength is increased by containing the artificial polypeptide fiber, the sheath 20 can be thinned, and the flexibility and flexibility can be improved while maintaining the strength of the composite cable 2A, and the weight can be reduced.

  According to the first embodiment described above, since the first signal line 30 and the second signal line 40 are not covered with the shield conductor, the flexibility of the composite cable 2A is increased and the composite cable 2A It can contribute to weight reduction and cost reduction. Further, since the first signal line 30 and the second signal line 40 are separated by the pair of power supply lines 21 and 22, the crosstalk between the first signal line 30 and the second signal line 40. Is suppressed. That is, according to the present embodiment, the shield conductor that covers the first signal line 30 and the second signal line 40 is omitted, and the space between the first signal line 30 and the second signal line 40 is eliminated. It is possible to suppress the crosstalk of.

(Other embodiments)
Hereinafter, the composite cables 2B to 2F according to the second to sixth embodiments of the present invention will be described. Like the composite cable 2A according to the first embodiment, these composite cables 2B to 2F have connectors at the ends of the pair of power supply lines 21 and 22, the first signal line 30, and the second signal line 40. It can be applied to the vehicle 1 by being configured as a wire harness by being attached. Further, in the composite cables 2B to 2F, with respect to the sheath 20, the pair of power supply lines 21 and 22, and the insulated wires 31, 32, 41 and 42 of the first and second signal lines 30 and 40, the materials and dimensions thereof are as follows. It can be similar to that described above.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to FIG. The composite cable 2B according to the second embodiment is similar to the composite cable 2A according to the first embodiment in that the sheath 20, the pair of power supply lines 21 and 22, the first signal line 30, and the second The signal line 40 and the inclusion 5 are provided, and the first signal line 30 and the second signal line 40 are separated from each other by the pair of power supply lines 21 and 22. The phases of the twisting of the two signal lines 40 are different. Hereinafter, this difference will be mainly described.

  FIG. 6A is an explanatory diagram showing the internal structure of the composite cable 2B according to the present embodiment, and FIG. 6B is a sectional view of the composite cable 2B. In FIG. 6A, the sheath 20 is cut into a semicircular cross section along the longitudinal direction, and the inclusion 5 is omitted from illustration, and the internal structure of the composite cable 2B is illustrated.

The composite cable 2B according to the present embodiment is similar to the composite cable 2A according to the first embodiment in that the first signal line 30 is formed by twisting a pair of insulated wires 31 and 32 together, and the second signal The wire 40 is formed by twisting a pair of insulated wires 41 and 42 together. The twist pitch P ₁ of the pair of insulated wires 31 and 32 in the first signal line 30 and the twist pitch P ₂ of the pair of insulated wires 41 and 42 in the second signal line 40 are common.

  However, the twisted phase of the pair of insulated wires 31 and 32 in the first signal line 30 and the twisted phase of the pair of insulated wires 41 and 42 in the second signal line 40 are different from each other in FIG. In a cross section orthogonal to the longitudinal direction of the sheath 20 shown in (), when the pair of insulated electric wires 31 and 32 of the first signal line 30 are arranged along a direction parallel to the arrangement direction of the pair of power supply lines 21 and 22, Second signal line 40 A pair of insulated wires 41, 42 are arranged along a direction orthogonal to the direction in which the pair of power lines 21, 22 are arranged.

  Thereby, the diameter of the sheath 20 can be reduced. That is, in the present embodiment, the diameter of the composite cable 2B can be made smaller than that of the composite cable 2A according to the first embodiment.

  That is, in the composite cable 2A according to the first embodiment, as shown in FIG. 5, a pair of insulated wires 31 and 32 in the first signal line 30 and a pair of insulated wires 41 and 32 in the second signal line 40. Even when both 42 are arranged in the direction orthogonal to the direction in which the pair of power supply lines 21 and 22 are arranged, the pressing force from the first signal line 30 and the second signal line 40 causes the pair of power supply lines 21 and 22 to move. Although it was necessary to set the inner diameter of the sheath 20 so as not to greatly widen the interval, according to the present embodiment, the pair of insulated wires 31, 32 and the second signal wire in the first signal wire 30. Since the pair of insulated wires 41, 42 in 40 are not arranged in a line, the inner diameter of the sheath 20 can be made smaller than that of the composite cable 2A according to the first embodiment.

Further, also in the composite cable 2B according to the present embodiment, similarly to the composite cable 2A according to the first embodiment, the pair of power supply lines 21, 22 and the first signal line 30 and the second signal line. Regions A ₂₁ and A ₂₂ surrounded by 40 are spaces not filled with the inclusions 5, which facilitates the terminal treatment of the composite cable 2B.

  As described above, according to the present embodiment, in addition to the function and effect described in the first embodiment, it is possible to reduce the diameter of the composite cable 2B, and thus to improve the policy of the composite cable 2B. It is possible to raise it.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG. The composite cable 2C according to the third embodiment, like the composite cable 2A according to the first embodiment, has a sheath 20, a pair of power supply lines 21 and 22, a first signal line 30, and a second signal line. The signal line 40 and the inclusion 5 are provided, and the first signal line 30 and the second signal line 40 are separated from each other by the pair of power supply lines 21 and 22. The twist pitches of the two signal lines 40 are different. Hereinafter, this difference will be mainly described.

  FIG. 7A is an explanatory diagram showing the internal structure of the composite cable 2C according to the present embodiment, and FIG. 7B is a sectional view of the composite cable 2C. In FIG. 7A, the sheath 20 is cut into a semicircular cross section along the longitudinal direction, and the inclusions 5 are omitted from illustration, and the internal structure of the composite cable 2C is illustrated.

The composite cable 2C according to the present embodiment is similar to the composite cable 2A according to the first embodiment in that the first signal line 30 is formed by twisting a pair of insulated wires 31 and 32 together, and the second signal The wire 40 is formed by twisting a pair of insulated electric wires 41 and 42, and the twist pitch P ₁ of the pair of insulated electric wires 31 and 32 in the first signal wire 30 and the pair of insulated electric wires 41 in the second signal wire 40. , 42 has a different twist pitch P ₂ .

Further, in the present embodiment, than the twisting pitch P ₁ of the first signal line 30 larger in the twisting pitch P ₂ of the second signal line 40, the difference is more than twice. However, conversely, the twist pitch P ₁ of the _first signal line 30 may be made larger than the twist pitch P ₂ of the second signal line 40, and the twist pitch of the first signal line 30 may be further increased. P ₁ may be twice or more the twist pitch P ₂ of the second signal line 40.

As a result, in the composite cable 2C according to the present embodiment, the curl can be suppressed compared to the composite cable 2A according to the first embodiment. In other words, when accommodating multiple twisted pair wires in a single sheath, the entire cable may curl due to the curl depending on the winding direction of the twisted pair wires, which may reduce the cabling ability. According to the embodiment, the twist pitch P ₁ of the pair of insulated wires 31 and 32 in the first signal line 30 is different from the twist pitch P ₂ of the pair of insulated wires 41 and 42 in the second signal line 40. Therefore, as compared with the case where the twist pitch P ₂ of the _second signal line 40 is equal to the twist pitch P ₁ of the first signal line 30, the winding tendency of the composite cable 2C is less likely to occur. If the difference between the twist pitch P ₁ of the first signal line 30 and the twisting pitch P ₂ of the second signal line 40 is 2 times or more, this effect becomes more pronounced.

In addition, when made different from the twist pitch P ₁ of the first signal line 30 and a twisting pitch P ₂ of the second signal line 40, the change cycle of the electrical signal to be transmitted to increase the twisting pitch of the longer signal lines Is desirable. In other words, for twisted pair wires, increasing the twist pitch makes them more susceptible to electromagnetic noise, but if the electrical signal change cycle is long, for example, among multiple detection results in multiple sampling cycles, other detection results Even if the twist pitch is increased, it is possible to reduce the influence of electromagnetic wave noise by ignoring a value far from the object as an abnormal value or averaging a plurality of detection results.

Therefore, in the composite cable 2C according to the present embodiment, the second signal line that transmits the detection signal of the air pressure sensor 132 is more than the twist pitch P _{1 of} the first signal line 30 that transmits the signal for wheel speed detection. The twist pitch P _{2 of} 40 is increased.

Further, also in the composite cable 2C according to the present embodiment, similarly to the composite cable 2A according to the first embodiment, the pair of power supply lines 21, 22 and the first signal line 30 and the second signal line. Regions A ₃₁ and A ₃₂ surrounded by 40 are spaces not filled with the inclusions 5, which facilitates the terminal treatment of the composite cable 2C.

  As described above, according to the present embodiment, in addition to the actions and effects described in the first embodiment, it is possible to suppress the winding tendency of the composite cable 2C.

[Fourth Embodiment]
Next, a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a sectional view of the composite cable 2D according to the present embodiment.

  The composite cable 2D according to the fourth embodiment is similar to the composite cable 2A according to the first embodiment in that the sheath 20, the pair of power supply lines 21 and 22, the first signal line 30, and the second Signal line 40, and the first signal line 30 and the second signal line 40 are separated by the pair of power supply lines 21 and 22, but the pair of power supply lines 21 and 22 and the first signal line 30 and the second signal line 40 are held by the sheath 20 and have no inclusions 5.

Also in the composite cable 2D according to the present embodiment, the areas A ₄₁ and A ₄₂ surrounded by the pair of power supply lines 21 and 22, the first signal line 30, and the second signal line 40 are externally connected. It is a space that can be compressed by the pressure. As a result, similarly to the first embodiment, the terminal processing of the composite cable 2D is facilitated.

  Also according to the present embodiment, the same operation and effect as the operation and effect described in the first embodiment can be obtained. Moreover, since the inclusions 5 are not arranged in the sheath 20, the manufacturing process is simplified.

  The artificial polypeptide fiber may be contained in the sheath 20 of the composite cable 2D. By using the sheath 20 containing the artificial polypeptide fiber, the outer diameter of the sheath 20 can be reduced by increasing the strength of the sheath 20 itself, and the diameter and weight of the composite cable 2D can be reduced.

[Fifth Embodiment]
Next, a fifth embodiment of the present invention will be described with reference to FIG. FIG. 9 is a sectional view of the composite cable 2E according to the present embodiment.

  The composite cable 2E according to the fifth embodiment is different from the composite cable 2D according to the fourth embodiment in that the sheath 20, the pair of power supply lines 21, 22 and the first and second signal lines 30, 40 are included. And a lubricant 6 for reducing the frictional resistance and enhancing the lubricity are arranged. That is, in the composite cable 2E according to the present embodiment, the pair of power supply lines 21, 22 and the first and second signal lines 30, 40 are held in the sheath 20 via the lubricant 6.

The lubricant 6 has a particle size of, for example, 5 to 50 μm, and as its material, talc (Mg ₃ Si ₄ O ₁₀ (OH) ₂ ) or silica (SiO ₂ ) can be preferably used. Here, the particle size refers to the size of particles determined by a sieving method, a microscope method, a laser diffraction / scattering method, an electric detection method, a chromatography method or the like defined in JIS8801. Further, paper tape or lubricating oil may be used as the lubricant 6.

  According to the composite cable 2E according to the present embodiment, compared with the composite cable 2D according to the fourth embodiment, the pair of power supply lines 21, 22 and the first and the second power supply lines inside the sheath 20 by the lubricant 6 are provided. The movement of the second signal lines 30 and 40 can be made smooth, and the flexibility is enhanced.

[Sixth Embodiment]
Next, a sixth embodiment of the present invention will be described with reference to FIG. 10A is a cross-sectional view of the composite cable 2F according to the present embodiment, and FIG. 10B is an explanatory diagram showing a configuration example of the braided shield 7 of the composite cable 2F.

  A composite cable 2F according to the sixth embodiment is obtained by adding a braided shield 7 to the composite cable 2A according to the first embodiment. That is, the composite cable 2F according to the present embodiment includes the sheath 20, the pair of power supply lines 21 and 22, the first signal line 30, the second signal line 40, and the inclusion 5, and further includes Inside the sheath 20, a braided shield 7 that collectively covers the pair of power supply lines 21 and 22 and the first and second signal lines 30 and 40 is provided.

  In the braided shield 7, a plurality of strands 70 of good conductivity such as copper are braided together with an artificial polypeptide fiber 71 in a lattice shape. More specifically, the braided shield 7 is an artificial spider silk fiber in which a plurality of strands 70 of good conductivity such as copper and an artificial polypeptide fiber 71 (artificial spider silk fiber) are woven in a lattice shape at a “predetermined ratio”. It is a mixed braided shield. Here, the "predetermined ratio" is a ratio at which the original shield function is not lost. As the artificial polypeptide fiber 71, the same one as described in the first embodiment can be used.

  In addition, as a possible modification, a braided shield 7, a braided shield layer in which a plurality of strands 70 of good conductivity such as copper are braided in a lattice shape, and an artificial polypeptide fiber 71 (artificial spider fiber) are latticed. A laminated braided shield is obtained by laminating an artificial spider yarn braided layer woven in a shape.

In this way, by using the artificial polypeptide fiber 71 (artificial spider silk fiber), the weight of the braided shield can be reduced.
The above-mentioned artificial spider yarn braid (artificial spider yarn braid layer) can be applied not only in the field of cables but also in the field of hoses such as brake hoses, and its application range is wide.

  According to this embodiment, in addition to the actions and effects described in the first embodiment, electromagnetic waves from the outside of the braided shield 7 adversely affect the transmission of electric signals by the first and second signal lines 30 and 40. Can be suppressed. Further, it is possible to suppress the electromagnetic waves caused by the currents flowing through the pair of power supply lines 21 and 22 from adversely affecting the communication via other cables. Furthermore, in the braided shield 7, since a plurality of strands 70 of good conductivity such as copper are braided in a lattice shape together with the artificial polypeptide fibers 71, the strength of the braided shield 7 is increased and the composite cable 2F is repeatedly bent. Even if it is done, it is possible to suppress the rupture of the strand 70 made of a metal such as copper. Accordingly, the thin wire 70 can be used, and the flexibility of the composite cable 2F can be improved.

(Summary of Embodiments)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals and the like in the embodiment. However, each symbol in the following description does not limit the constituent elements in the claims to the members and the like specifically described in the embodiments.

[1] A pair of electric currents are supplied to the electric parking brake device (130) that generates a braking force after the vehicle (1) is stopped, and the center conductors (210, 220) are covered with insulators (211, 221). A power line (21, 22) for an electric parking brake and a first electric signal are transmitted when the vehicle (1) is running, and the central conductors (310, 320) are covered with insulators (311, 321). A first traveling signal line (30) composed of a twisted pair wire formed by twisting a pair of first insulated electric wires (31, 32) and a second electric signal transmitted during traveling of the vehicle (1). , A second signal line for traveling composed of a twisted pair wire formed by twisting a pair of second insulated electric wires (41, 42) formed by coating the central conductors (410, 420) with insulators (411, 421) (40) and the pair of A pair of power supply lines (21, 22) for the dynamic parking brake and a sheath (20) made of polyurethane that collectively covers the first and second signal lines (30, 40) for traveling. The electric power lines for electric parking brake (21, 22) have a larger outer diameter than the first (31, 32) and the second insulated wire (41, 42), respectively, The lines (21, 22) and the first and second traveling-time signal lines (30, 40) are not covered by shield conductors, respectively, and are not covered with the first traveling-time signal line (30). A vehicle composite cable (2A to 2F) separated from the second traveling signal line (40) by separating the pair of electric parking brake power lines (21, 22).

[2] The first electrical signal is a signal for wheel speed detection that detects the rotational speed of the wheel (rear wheel 12), and the second electrical signal is the rotational speed of the wheel (12). The vehicle composite cable (2A to 2F) according to [1], which is a detection signal of a vehicle state quantity indicating a different traveling state of the vehicle (1).

[3] A region surrounded by the pair of electric parking brake power lines (21, 22), the first traveling signal line (30), and the second traveling signal line (40) ( A ₁₁ , A ₁₂ , A ₂₁ , A ₂₂ , A ₃₁ , A ₃₂ , A ₄₁ , A ₄₂ ) is defined as a space, and the vehicle composite cable (2A to 2F) according to the above [1] or [2]. ).

[4] The outer diameter (D ₁₂ ) of the pair of first insulated wires (31, 32) and the outer diameter (D ₂₂ ) of the pair of second insulated wires (41, 42) are equal. , The vehicle composite cable (2A to 2F) according to any one of [1] to [3].

[5] The pair of first insulated wires (31, 32) and the pair of second insulated wires (41, 42) have a common twist pitch (P ₁ , P ₂ ) and are twisted together. In a cross section that is out of phase and is orthogonal to the longitudinal direction of the sheath (20), the pair of first insulated wires (31, 32) is aligned with the direction in which the pair of electric parking brake power lines (21, 22) are arranged. When arranged in parallel, the pair of second insulated electric wires (41, 42) is arranged along a direction orthogonal to the arrangement direction of the pair of electric parking brake power supply lines (21, 22). The vehicle composite cable (2A to 2F) according to any one of [1] to [4], which is arranged side by side.

[6] The pair of first insulated wires (31, 32) and the pair of second insulated wires (41, 42) have twist pitches (P ₁ , P ₂ ) different from each other, [1] The composite cable for vehicles (2A-2F) as described in any one of [4].

[7] The difference is doubled and the pair of first insulated wire (31, 32) of the twist pitch (P ₁₎ and said pair of second insulating twisting pitch of the wire (41 and 42) (P ₂₎ The above is the vehicle composite cable (2A to 2F) according to [6].

[8] The vehicle composite cable (2A to 2F) according to any one of [1] to [7], wherein the sheath (20) contains an artificial polypeptide fiber.

[9] Inside the sheath (20), interposed between the pair of electric parking brake power lines (21, 22) and the first and second traveling signal lines (30, 40). An inclusion (5) is provided, and the inclusion (5) is connected to the pair of electric parking brake power lines (21, 22) and the first and second traveling signal lines (30, 40). The vehicle composite cable (2A to 2F) according to any one of [1] to [8], which is in contact.
[10] The vehicle cable (2A to 2F) according to [9], wherein the inclusion (5) contains an artificial polypeptide fiber.

[11] The sheath (20) is covered with the pair of electric parking brake power lines (21, 22) and the first and second traveling signal lines (30, 40) at once. The braided shield (7) for performing the braided shield (7), wherein the strand (70) of the braided shield (7) is braided together with the artificial polypeptide fiber (71). [1] to [10] Vehicle composite cable (2A-2F).

[12] The pair of electric parking brake power lines (21, 22) and the first and second traveling signal lines (30, 40) are provided with the sheath (20) via a lubricant (6). The composite cable for a vehicle (2A to 2F) according to any one of [1] to [8], which is retained in the.

[13] The vehicle composite cable (2A to 2F) according to any one of [1] to [12], and the pair of electric parking brake power supply lines (21, 2) exposed from the sheath (20). 22), a connector attached to at least one of the ends of the first traveling signal line (30) and the second traveling signal line (40), Vehicle composite harness (2).

  Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. Further, it should be noted that not all the combinations of features described in the embodiments are essential to the means for solving the problems of the invention.

  Further, the present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, although the case where the second signal line 40 transmits the detection signal of the air pressure sensor 132 has been described in the above embodiment, the present invention is not limited to this. That is, the second signal line 40 may transmit the detection signal of the vehicle state quantity indicating the traveling state of the vehicle 1 different from the rotation speed of the wheels. The vehicle state quantity may be a current supplied to the electric motor when the rear wheel 12 is driven by an electric motor (in-wheel motor), and the rear wheel 12 is steered at a predetermined angle. In that case, it may be the steering angle.

  If the front wheel 11 is also provided with the electric parking brake device 130, a wire harness in which a connector or the like is attached to any of the composite cables 2A to 2F may be used on the front wheel 11 side.

DESCRIPTION OF SYMBOLS 1 ... Vehicle 2 ... Wire harness 2A-2F ... Composite cable 5 ... Inclusion 6 ... Lubricant 7 ... Braided shield 10 ... Car body 20 ... Sheaths 21, 22 ... Power supply line 30 ... First signal line 40 ... Second signal Wires 31, 32, 41, 42 ... Insulated wires 70 ... Strands 71 ... Artificial polypeptide fiber 130 ... Electric parking brake device 130c ... Brake pad 131 ... Wheel speed sensor 132 ... Pneumatic pressure sensor 132a ... Detection element 132b ... Antenna element

Claims (7)

Current is supplied to the electric parking brake apparatus which generates a braking force after the stop vehicles, a power supply line for a pair of electric parking brake which is formed by coating the center conductor with an insulator,
A first signal line for traveling, which transmits a first electric signal when the vehicle is traveling, and is formed of a twisted pair formed by twisting a pair of first insulated wires in which a central conductor is covered with an insulator;
A second signal line for traveling, which transmits a second electric signal when the vehicle is traveling, and comprises a twisted pair formed by twisting a pair of second insulated electric wires in which a central conductor is covered with an insulator;
A pair of electric parking brake power lines and a sheath made of polyurethane that collectively covers the first and second traveling signal lines;
The first electric signal is a signal for wheel speed detection that detects the rotational speed of the wheel,
The second electric signal is a detection signal of a vehicle state quantity indicating a traveling state of the vehicle different from a rotation speed of the wheels,
The pair of electric parking brake power lines have outer diameters larger than those of the first and second insulated wires, respectively.
The pair of electric parking brake power lines and the first and second traveling signal lines are not covered with shield conductors,
The first and second traveling signal lines are separated by the pair of electric parking brake power lines, and are separated from each other by sandwiching the pair of electric parking brake power lines,
The twisting direction of the pair of first insulated wires and the twisting direction of the pair of second insulated wires are the same direction,
It said pair of first insulated wire and the pair of second insulated wire, the twisting pitch has Tsu different from each other,
In the cross section orthogonal to the longitudinal direction of the sheath, when the pair of first insulated electric wires are arranged along a direction parallel to the arrangement direction of the pair of electric parking brake power supply lines, the pair of second insulating wires The electric wires are arranged along a direction orthogonal to the arrangement direction of the pair of electric parking brake power supply lines,
Vehicle composite cable. An area surrounded by the pair of electric parking brake power lines, the first traveling signal line, and the second traveling signal line is a space.
The composite cable for a vehicle according to claim 1. The outer diameters of the pair of first insulated wires are equal to the outer diameters of the pair of second insulated wires,
The composite cable for a vehicle according to claim 1 or 2. Supplying a current to an electric parking brake device that generates a braking force after the vehicle is stopped, and a pair of electric parking brake power lines formed by covering the central conductor with an insulator,
A first signal line for traveling, which transmits a first electric signal when the vehicle is traveling, and is formed of a twisted pair formed by twisting a pair of first insulated wires in which a central conductor is covered with an insulator;
A second signal line for traveling, which is a twisted pair formed by twisting a pair of second insulated electric wires for transmitting a second electric signal when the vehicle is traveling and twisting a central conductor with an insulator;
A pair of electric parking brake power lines and a sheath made of polyurethane that collectively covers the first and second traveling signal lines;
The first electric signal is a signal for wheel speed detection that detects the rotational speed of the wheel,
The second electric signal is a detection signal of a vehicle state quantity indicating a traveling state of the vehicle different from a rotation speed of the wheels,
The pair of electric parking brake power lines have outer diameters larger than those of the first and second insulated wires, respectively.
The pair of electric parking brake power lines and the first and second traveling signal lines are not covered with shield conductors,
The first and second traveling signal lines are separated by the pair of electric parking brake power lines, and are arranged so as to be separated by sandwiching the pair of electric parking brake power lines,
The twisting direction of the pair of first insulated wires and the twisting direction of the pair of second insulated wires are the same direction,
The pair of first insulated wires and the pair of second insulated wires have different twist pitches,
The difference between the twist pitch of the pair of first insulated wires and the twist pitch of the pair of second insulated wires is at least twice as large.
Car dual composite cable. Inside the sheath, an intervening object is provided between the pair of electric parking brake power lines and the first and second traveling signal lines,
The inclusion is in contact with the pair of electric parking brake power lines and the first and second signal lines for traveling.
The vehicle composite cable according to any one of claims 1 to 4 . The pair of electric parking brake power lines and the first and second traveling signal lines are held by the sheath via a lubricant.
The vehicle composite cable according to any one of claims 1 to 4 . A vehicle composite cable according to any one of claims 1 to 6 ,
Attached to at least one of the ends of the pair of electric parking brake power lines, the first traveling signal line, and the second traveling signal line exposed from the sheath. With a connector,
Composite harness for vehicles.