JP2020109768A - Composite cable and composite harness - Google Patents

Abstract

To provide a composite cable and a composite harness capable of suppressing deterioration of a working environment of a terminal processing while maintaining flex resistance.SOLUTION: A composite cable includes: a first pair of twisted wires 3 obtained by twisting a pair of first electric wires 2 having a first central conductor 21; a second pair of twisted wires 5 obtained by twisting a pair of second electric wires 4 having a second central conductor 41; a pair of third electric wire 6 that has a third central conductor 61 having a cross-section larger than both central conductors 21 and 41, has an outer diameter larger than a first electric wire 2 and a second electric wire 4, and is arranged between the first twisted wire 3 and the second twisted wire 5 in the peripheral direction; and a tape member 8 wound spirally around an assemblage 7 formed by twisting the first twisted wire 3, the second twisted wire 5, and a pair of the third electric wire 6. In the composite cable, twisting directions of both pair of twisted wires 3 and 5 are the same, twisting directions of both pair of twisted wires 3 and 5 and the twisting direction of the assemblage 7 are different, and the twisting direction of the assemblage 7 and a winding direction of the tape member 8 are different.SELECTED DRAWING: Figure 2

Description

The present invention relates to a composite cable and a composite harness, and particularly to a composite cable and a composite harness that connect a wheel side and a vehicle body side in a vehicle such as an automobile.

In recent years, electric braking devices have been used in vehicles such as automobiles.

As an electric braking device, an electro-mechanical brake (EMB) and an electric parking brake (EPB) are known.

The electromechanical brake is also simply called an electric brake or an electric brake, and a dedicated electric motor provided for each wheel of the vehicle according to the operation amount (pedal force or displacement amount) of the brake pedal by the driver. Is controlled so that the brake pad is pressed against the disk rotor of the wheel by the piston driven by the electric motor, so that the braking force according to the driver's intention is generated.

In the electric parking brake, a driver operates a parking brake operation switch after the vehicle is stopped to drive a dedicated electric motor provided on each wheel of the vehicle, and a piston driven by the electric motor causes a brake pad to be driven. Is pressed against the disc rotor of the wheel to generate a braking force.

Further, in recent vehicles, sensors such as an ABS (Anti-lock Brake System) sensor that detects the rotational speed of a running wheel, an air pressure sensor that detects tire air pressure, and a temperature sensor are mounted on the wheel. Often.

Therefore, the signal line for the sensor mounted on the wheel and the signal line for the control of the electromechanical brake and the power supply line for supplying the electric motor to the electric motor for the electromechanical brake and the electric parking brake are provided in a common sheath. The wheel side and the vehicle body side are connected using the accommodated composite cable. A composite harness in which a connector is integrally provided at an end of the composite cable is called a composite harness.

In Patent Document 1, by interposing a lubricant such as talc powder between a plurality of electric wires and a sheath that collectively covers the plurality of electric wires, friction between the electric wires and the sheath is reduced and at the time of bending. There has been proposed a composite cable in which stress applied to an electric wire is reduced to improve bending resistance.

JP, 2014-135153, A

However, the composite cable described in Patent Document 1 has a problem that a lubricant such as talc powder scatters in the work place and deteriorates the work environment when the terminal processing is performed.

Therefore, an object of the present invention is to provide a composite cable and a composite harness capable of suppressing deterioration of the work environment for terminal processing while maintaining flex resistance.

In order to solve the above problems, the present invention comprises a pair of first electric wires having a first central conductor and a first insulator coated on the outer periphery of the first central conductor, which are twisted together. A second twisted pair wire formed by twisting a pair of second electric wires having a first twisted pair wire, a second center conductor, and a second insulator covering the outer periphery of the second centered conductor; A third center conductor having a cross-sectional area larger than that of the first center conductor and the second center conductor, and a third insulator coated on the outer periphery of the third center conductor. A pair of third electric wires having an outer diameter larger than that of the two electric wires and arranged between the first twisted pair and the second twisted pair in the circumferential direction; the first twisted pair; A pair of twisted wires, and a tape member that is spirally wound around an assembly formed by twisting the pair of third electric wires, wherein the twisted directions of the pair of twisted wires are the same. There is provided a composite cable in which the twisting direction of the pair of twisted wires is different from the twisting direction of the aggregate, and the twisting direction of the aggregate is different from the winding direction of the tape member.

Moreover, this invention is attached to the composite cable and the end part of at least any one of the said 1st electric wire, the said 2nd electric wire, and the said 3rd electric wire in order to solve the said subject. And a connector, and a composite harness including the connector.

ADVANTAGE OF THE INVENTION According to this invention, the composite cable and composite harness which can suppress deterioration of the working environment of a terminal process can be provided, maintaining bending resistance.

It is a block diagram which shows the structure of the vehicle using the composite cable which concerns on one embodiment of this invention. (A) is a cross-sectional view of a composite cable according to an embodiment of the present invention, (b) is a diagram for explaining the twisting direction of both twisted pair wire and the third wire and the winding direction of the tape member in the composite cable. Is. It is a schematic block diagram of the composite harness which concerns on one embodiment of this invention.

[Embodiment]
Embodiments of the present invention will be described below with reference to the accompanying drawings.

(Explanation of vehicle to which composite cable is applied)
FIG. 1 is a block diagram showing the configuration of a vehicle using the composite cable according to the present embodiment.

As shown in FIG. 1, a vehicle 100 is provided with an electric parking brake (hereinafter referred to as EPB) 101 as an electric braking device.

The EPB 101 includes an EPB electric motor 101a and an EPB control unit 101b.

The EPB electric motor 101a is a wheel side device mounted on the wheel 102 of the vehicle 100. The EPB control unit 101b is mounted on an ECU (electronic control unit) 103 which is a vehicle body side device of the vehicle 100. The EPB control unit 101b may be mounted on a control unit other than the ECU 103, or may be mounted on a dedicated hardware unit.

Although not shown, the EPB electric motor 101a is provided with a piston to which a brake pad is attached, and by moving the piston by rotationally driving the EPB electric motor 101a, the brake pad of the wheel 102 is moved. The wheel is pressed against the disk rotor to generate a braking force. A pair of third electric wires 6 are connected to the EPB electric motor 101a as a power supply line for supplying a drive current to the EPB electric motor 101a.

The EPB control unit 101b outputs a drive current to the EPB electric motor 101a for a predetermined time (for example, 1 second) when the parking brake operation switch 101c is operated from the off state to the on state when the vehicle 100 is stopped. The brake pad is pressed against the disc rotor of the wheel 102 to generate a braking force on the wheel 102. Further, the EPB control unit 101b outputs a drive current to the EPB electric motor 101a when the parking brake operation switch 101c is operated from the ON state to the OFF state, or when the accelerator pedal is stepped on, and the EPB control unit 101b brakes. The pad is spaced from the disc rotor of the wheel to release the braking force on the wheel 102. That is, the operation state of the EPB 101 is configured to be maintained after the parking brake operation switch 101c is turned on until the parking brake operation switch 101c is turned off or the accelerator pedal is depressed. The parking brake operation switch 101c may be a lever type switch or a pedal type switch.

An ABS device 104 is mounted on the vehicle 100. The ABS device 104 includes an ABS sensor 104a and an ABS control unit 104b.

The ABS sensor 104a is a rotation speed detection sensor that detects the rotation speed of the wheel 102 during traveling, and is mounted on the wheel 102. The ABS control unit 104b controls the braking device based on the output of the ABS sensor 104a and controls the braking force of the wheels 102 so that the wheels 102 are not locked during a sudden stop, and is installed in the ECU 103. A pair of first electric wires 2 are connected to the ABS sensor 104a as signal lines.

Further, a wheel 102 of the vehicle 100 is provided with an air pressure sensor 108 that detects an air pressure of a tire (not shown) provided on the wheel 102. A pair of second electric wires 4 are connected to the air pressure sensor 108 as signal lines. The ECU 103 is equipped with an air pressure detector 109 that detects the tire air pressure based on the output of the air pressure sensor 108.

The first electric wire 2, the second electric wire 4, and the third electric wire 6 are collectively covered with the sheath 9 (see FIG. 2) to form the composite cable 1 according to the present embodiment. The composite cable 1 extending from the wheel 102 side is connected to a wire group 107 in a relay box 106 provided in the vehicle body 105, and is connected to the ECU 103 and a battery (not shown) via the wire group 107. ..

Although only one wheel 102 is shown in FIG. 1 for simplification of the drawing, the EPB electric motor 101a, the ABS sensor 104a, and the air pressure sensor 108 may be mounted on each wheel 102 of the vehicle 100. Of course, the vehicle 100 may be mounted only on the front wheels or only on the rear wheels.

(Description of composite cable 1)
FIG. 2A is a cross-sectional view of the composite cable 1 according to the present embodiment, and FIG. 2B is a diagram illustrating a twisting direction of both twisted pair wires and a third wire and a winding direction of a tape member. ..

As shown in FIGS. 2A and 2B, the composite cable 1 includes a first pair of twisted wires 3 formed by twisting a pair of first electric wires 2 and a pair of second electric wires 4 twisted together. A second pair of twisted wires 5, a pair of third wires 6 having an outer diameter larger than that of the first wire 2 and the second wire 4, a first pair of twisted wires 3, a second pair of twisted wires 5, and a pair of wires. The tape member 8 is spirally wound around the assembly 7 in which the third electric wires 6 are twisted together, and the sheath 9 covering the outer periphery of the tape member 8.

In the present embodiment, the first electric wire 2 is a signal wire for the ABS sensor 104a mounted on the wheel 102. The first electric wire 2 includes a first central conductor 21 and a first insulator 22 that covers the outer circumference of the first central conductor 21.

The first central conductor 21 is made of a stranded wire conductor in which strands of good conductivity such as copper are twisted together, and the first insulator 22 is made of an insulating resin such as crosslinked polyethylene. As a wire used for the first central conductor 21, a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used. If a wire with a diameter of less than 0.05 mm is used, sufficient mechanical strength may not be obtained and flex resistance may be reduced. If a wire with a diameter of more than 0.30 mm is used, the flexibility of the composite cable 1 May deteriorate.

Further, in the present embodiment, the second electric wire 4 is a signal wire for the air pressure sensor 108 mounted on the wheel 102. The second electric wire 4 includes a second central conductor 41 and a second insulator 42 that covers the outer circumference of the second central conductor 41. The second center conductor 41 is made of a stranded wire conductor in which strands of good conductivity such as copper are twisted together, and the second insulator 42 is made of an insulating resin such as crosslinked polyethylene. As the element wire used for the second center conductor 41, similarly to the first center conductor 21, a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used.

Further, in the present embodiment, the third electric wire 6 is a power supply line for supplying a drive current to the EPB electric motor 101a mounted on the wheels 102 of the vehicle 100. The third electric wire 6 includes a third central conductor 61 and a third insulator 62 that covers the outer periphery of the third central conductor 61. The third center conductor 61 is made of a stranded wire conductor formed by twisting wires of good conductivity such as copper, and the third insulator 62 is made of an insulating resin such as crosslinked polyethylene. As the strands used for the third central conductor 61, similarly to the first central conductor 21 and the second central conductor 41, those having a diameter of 0.05 mm or more and 0.30 mm or less can be used.

The cross-sectional area (conductor cross-sectional area) of the third central conductor 61 of the third electric wire 6 and the thickness of the third insulator 62 may be appropriately set according to the magnitude of the drive current required. In the present embodiment, since the first electric wire 2 and the second electric wire 4 are used as signal lines and the third electric wire 6 is used as a power supply line, the third central conductor 61 is the first central conductor 21 and the second central conductor 21. The cross-sectional area (conductor cross-sectional area) is set larger than that of the central conductor 41. In the present embodiment, considering that the third electric wire 6 is a power supply wire for supplying a drive current to the EPB electric motor 101a, the outer diameter of the third central conductor 61 is 1.5 mm or more and 3.0 mm or less. And the outer diameter of the third electric wire 6 was set to 2.0 mm or more and 4.0 mm or less.

The outer diameter of the third electric wire 6 is larger than the outer diameters of the first electric wire 2 and the second electric wire 4. In the present embodiment, a first twisted pair wire 3 formed by twisting a pair of (two) first electric wires 2 and a second pair twisted wire 5 formed by twisting a pair of (two) second electric wires 4 In order to make the outer diameter of the composite cable 1 closer to a circular shape, the first electric wire 2 and the second electric wire 4 are It can be said that it is desirable to use a wire having about half the outer diameter of the three electric wires 6.

Specifically, as the first electric wire 2 and the second electric wire 4, those having an outer diameter of 1.0 mm or more and 1.8 mm or less can be used. Here, as the first electric wire 2, a conductor having a conductor cross-sectional area of the first center conductor 21 of 0.13 mm 2 or more and 0.30 mm 2 or less is used, and as the second electric wire 4, the conductor cross-sectional area of the second center conductor 41 is 0. Those having a size of 30 mm2 or more and 0.50 mm2 or less were used. In the present embodiment, the conductor cross-sectional area of the second electric wire 4 is set to be larger than the conductor cross-sectional area of the first electric wire 2, but the conductor cross-sectional areas of the two electric wires 2 and 4 may be the same. From the viewpoint of making the cross-sectional shape of the composite cable 1 closer to a circular shape, the outer diameters of the two electric wires 2 and 4 should be substantially equal (for example, the difference between the outer diameters of the two electric wires 2 and 4 is Within 20% of).

The twist pitch P1 of the first twisted pair wire 3 and the twist pitch P2 of the second twisted pair wire 5 are set to the first wire 2 and the second wire 4 in consideration of the outer diameters of the first wire 2 and the second wire 4. It should be set so that unnecessary load is not applied. Here, the twist pitches P1 and P2 of both twisted pair wires 3 and 5 are set to about 30 mm, but the twist pitches P1 and P2 of the twisted pair wires 3 and 5 are not limited to this. Further, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 may be different from each other. The twist pitch P1 of the first twisted pair wire 3 is a distance along the longitudinal direction of the first twisted pair wire 3 where any first electric wire 2 is located at the same position in the circumferential direction of the first twisted pair wire 3. is there. In addition, the twist pitch P2 of the second twisted pair wire 5 is an interval along the longitudinal direction of the second twisted pair wire 5 where any second electric wire 4 is located at the same position in the circumferential direction of the second twisted pair wire 5. is there.

The aggregate 7 is configured by twisting the first twisted pair wire 3, the second twisted pair wire 5, and the pair of third wires 6 together. In the present embodiment, the third electric wire 6 is arranged between the first twisted pair wire 3 and the second twisted pair wire 5 in the circumferential direction. In the cross section of FIG. 2A, the second twisted pair 5, the one third wire 6, the first twisted pair 3, and the other third wire 6 are sequentially arranged in the clockwise direction.

When the third electric wires 6 are arranged so as to be adjacent to each other in the circumferential direction (when the paired twisted wires 3 and 5 are arranged so as to be adjacent to each other), the center of gravity of the assembly 7 is changed from the center position of the assembly 7. If the two twisted wires 3, 5 and the third electric wire 6 are twisted together to form the aggregate 7, the aggregate 7 is twisted as a whole. Therefore, it is difficult to manufacture the linear composite cable 1, and there is also a problem that flexibility is deteriorated due to occurrence of a direction that is difficult to bend in a part of the longitudinal direction. As in the present embodiment, by arranging the third electric wire 6 to be arranged between the first twisted pair wire 3 and the second twisted pair wire 5 in the circumferential direction, the linear composite cable 1 can be easily manufactured. In addition, it is possible to suppress the problem that the direction that is difficult to bend occurs in a part of the longitudinal direction, and it is possible to suppress the decrease in flexibility.

Further, in the present embodiment, the yarns (fibers) extending in the longitudinal direction of the composite cable 1 are provided between the first twisted pair wire 3, the second twisted pair wire 5, the pair of third electric wires 6, and the tape member 8. A plurality of interposers 10 of the shape) are arranged and twisted together with the paired twisted wires 3, 5 and the third electric wire 6 to form the assembly 7. Therefore, the twisting direction and the twisting pitch of the plurality of interpositions 10 are the same as the twisting direction and the twisting pitch of the aggregate 7. The plurality of interpositions 10 are arranged so as to fill the gaps between the pair of twisted wires 3, 5, the third electric wire 6, and the tape member 8, and when the tape member 8 is wound around the outer periphery of the assembly 7. The cross-sectional shape is made closer to a circular shape. In addition, a part of the plurality of interpositions 10 is a valley between the twisted pair wires 3 and 5 and the third electric wire 6, a valley between the pair of first electric wires 2, or a pair of the second electric wires 4. It may also be arranged in a valley between them.

As the interposition 10, polypropylene yarn, soft yarn (rayon staple fiber), aramid fiber, nylon fiber, fibrous material such as fiber-based plastic, or paper or cotton yarn can be used. Further, in the cross-sectional view of FIG. 2A, the cross-sectional area of the interposition 10 is the total of the cross-sectional area of the first electric wire 2, the cross-sectional area of the second electric wire 4, and the cross-sectional area of the third electric wire 6, 2. It is preferable that it is larger than the total cross-sectional area of 4, 6.

Note that the EPB 101 supplies a short-time drive current when the parking brake operation switch 101c is operated, and the influence of noise on the first electric wire 2 and the second electric wire 4 used as signal lines is small. Therefore, in the present embodiment, the shield conductor provided around the third electric wire 6 and the twisted pair wires 3 and 5 is omitted. By omitting the shield conductor, the outer diameter of the composite cable 1 can be reduced as compared with the case where the shield conductor is provided, and the number of parts can be reduced and the cost can be suppressed.

In addition, in the present embodiment, the first pair twisted wire 3 that transmits an electric signal when the vehicle is traveling is mainly driven by the pair of third electric wires 6 that supplies the drive current to the EPB 101 after the vehicle is stopped, and the traveling of the vehicle is the same. The second twisted pair wire 5, which sometimes transmits an electric signal, is separated from the second twisted wire 5. Thereby, even if the shield conductors provided around the twisted pair wires 3 and 5 are omitted, it is possible to reduce crosstalk between the first twisted pair wire 3 and the second twisted pair wire 5.

Although the case where the third electric wire 6 supplies a drive current to the EPB electric motor 101a is described here, the third electric wire 6 may be, for example, an electromechanical brake ( Hereinafter, referred to as EMB), may be used to supply drive current to an electric motor. In this case, since the drive current frequently flows through the third electric wire 6, in order to suppress the influence of noise on the first electric wire 2 and the second electric wire 4 used as signal lines, the twisted pair wires 3, 5 It can be said that it is desirable to provide a shield conductor around (or around each electric wire 2, 4).

Further, here, the case where the first electric wire 2 is the signal wire for the ABS sensor 104a and the second electric wire 4 is the signal wire for the air pressure sensor 108 is described, but the first electric wire 2 and the second electric wire 4 are described. May be a signal line used for another sensor provided on the wheel 102, for example, a temperature sensor or the like, a damper line used for controlling the vibration damping device of the vehicle 100, and further, an EMB control. It may be a signal line for use (CAN cable or the like).

The outer diameter of the entire assembly 7 is, for example, about 5 mm to 9 mm. The twist pitch P3 of the assembly 7 is preferably set in consideration of the outer diameter of the assembly 7 so that an unnecessary load is not applied to the twisted pair wires 3, 5 and the third electric wire 6. Although the twist pitch P3 of the aggregate 7 is about 60 mm here, the twist pitch P3 of the aggregate 7 is not limited to this. The twist pitch P3 of the aggregate 7 is an interval along the longitudinal direction of the aggregate 7 in which any pair of twisted wires 3, 5 or the third electric wire 6 is at the same position in the circumferential direction of the aggregate 7.

A tape member 8 is spirally wound around the assembly 7, and the tape member 8 covers all the electric wires (the pair of first electric wires 2 and the pair of second electric wires 4, which are covered by the tape member 8). And a pair of third electric wires 6). The tape member 8 is interposed between the assembly 7 and the sheath 9 and plays a role of reducing friction between the assembly 7 (electric wires 2, 4, 6) and the sheath 9 when bent. That is, by providing the tape member 8, the friction between the wires 2, 4, 6 and the sheath 9 can be reduced without using a lubricant such as talc powder as in the conventional case, and the electric wires 2, 4, 6 during bending can be reduced. It is possible to reduce the stress applied to the body and improve the bending resistance.

The tape member 8 is slippery with respect to the first insulator 22 of the first electric wire 2, the second insulator 42 of the second electric wire 4, and the third insulator 62 of the third electric wire 6 (coefficient of friction is It is desirable to use a small one), and for example, a non-woven fabric, paper, or a resin (resin film) can be used. More specifically, as the tape member 8, the coefficient of friction (static friction coefficient) between the tape member 8 and the insulators 22, 42, 62 is the sheath 9 and the insulators 22, 42 when the tape member 8 is not provided. It is preferable to use a member having a smaller coefficient of friction (static coefficient of friction) between the first and second parts.

The tape member 8 may have a laminated structure of two or more layers. In this case, the surface of the tape member 8 that comes into contact with the aggregate 7 may be made of any one of non-woven fabric, paper, and a resin layer. For example, as the tape member 8, a paper having a resin layer formed on one surface thereof may be used, and the resin layer having a smaller friction coefficient may be wound around the assembly 7 side.

The tape member 8 is spirally wound around the assembly 7 so that parts thereof in the width direction (direction perpendicular to the longitudinal direction and the thickness direction of the tape member 8) overlap each other. The overlapping width of the tape members 8 is, for example, 1/4 or more and 1/2 or less of the width of the tape members 8. In the present embodiment, the overlapping portions of the tape members 8 are not adhered by an adhesive or the like.

The width of the tape member 8 may be such that the tape member 8 does not become wrinkled when the tape member 8 is wound, and the tape member 8 having a smaller width is used as the outer diameter of the entire assembly 7 becomes smaller. Is desirable. Specifically, when the outer diameter of the aggregate 7 is 5 mm to 9 mm, the width of the tape member 8 may be about 20 mm to 50 mm. The winding pitch P4 of the tape member 8, that is, the interval along the longitudinal direction where the tape member 8 is at the same position in the circumferential direction (for example, the interval between the one ends in the width direction) is the width and the overlapping width of the tape member 8 (the tape member). 8 winding angle), and in this case, the maximum is about 40 mm. Here, the winding pitch P4 of the tape member 8 is about 30 mm, but the winding pitch P4 of the tape member 8 is not limited to this.

When the width of the tape member 8 is increased and the winding pitch P4 is increased, the tape member 8 becomes closer to the vertically mounted state, and the flexibility of the composite cable 1 is lost and it becomes difficult to bend. Therefore, it is desirable that the winding pitch P4 of the tape member 8 be 40 mm or less.

A sheath 9 is provided around the tape member 8. The sheath 9 is made of urethane resin, for example. In the present embodiment, the third electric wire 6 supplies the driving current to the EPB electric motor 101a, and the driving current flows through the third electric wire 6 for a relatively short time. Therefore, the third electric wire 6 is provided around the tape member 8. Although the shield conductor is omitted, a shield conductor may be provided between the tape member 8 and the sheath 9 or on the outer periphery of the sheath 9 depending on the application of the third electric wire 6 or the like.

(Twisting direction of the twisted pair wires 3 and 5 and the assembly 7, winding direction of the tape member 8)
In the composite cable 1 according to the present embodiment, the twisting directions of the paired twisted wires 3 and 5 are the same, and the twisted direction of the paired twisted wires 3 and 5 is different from the twisting direction of the assembly 7, Moreover, the twisting direction of the assembly 7 and the winding direction of the tape member 8 are different. In other words, in the composite cable 1, the twisting directions of the paired twisted wires 3 and 5 are the same as the winding direction of the tape member 8, and only the twisting direction of the aggregate 7 is different.

The twisting direction here means that when the composite cable 1 is viewed from the tip side (the left side in FIG. 2B, the side where the tape members 8 are overlapped with each other), the electric wires 2, 4, 6 are The direction of rotation from the end side to the tip side. Here, the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the assembly 7 are clockwise (clockwise). The twisting direction of the twisted pair wires 3 and 5 is the direction in which the two wires 2 and 4 are twisted together, and the twisting direction of the assembly 7 is the twisted pair wires 3 and 5 and the third wire 6. It is the twisting direction.

Further, the winding direction of the tape member 8 means that the tape member 8 is from the base end side when the composite cable 1 is viewed from the front end side (the left side in FIG. 2B, the side where the tape members 8 overlap each other). The direction of rotation toward the tip side. Here, the winding direction of the tape member 8 is clockwise (clockwise). FIG. 2A shows a cross-sectional view when viewed from the tip side, in which the twisting direction of the first twisted pair wire 3 is indicated by a broken arrow A, the twisting direction of the second twisted pair wire 5 is indicated by a broken arrow B, and The twisting direction of the body 7 is indicated by a broken arrow C, and the winding direction of the tape member 8 is indicated by a broken arrow D.

In general, when the electric wires are twisted together or the tape is wound in a spiral shape, a bending tendency is imparted depending on the twisting direction and the winding direction, and the entire cable is naturally curved. In the present embodiment, since the twisting directions of the twisted pair wires 3 and 5 are different from the twisting direction of the assembly 7, and the twisting direction of the assembly 7 and the winding direction of the tape member 8 are different. The bending habits of the twisted pair wires 3 and 5 and the bending habit of the assembly 7 are opposite to each other and are offset, and the bending habit of the assembly 7 and the bending habit due to winding the tape member 8 are opposite to each other. As a result, they cancel each other out, and it is possible to easily realize the linear composite cable 1 in which the bending tendency is suppressed. As a result, it is possible to suppress variations in the bending characteristics of the composite cable 1 in the longitudinal direction.

When the twisting directions of the twisted pair wires 3 and 5 are the same as the twisting direction of the aggregate 7, the twisted pair wires 3 and 5 are twisted in a direction in which the twisting is tightened when the aggregates 7 are twisted together. The twist pitches P1 and P2 of the twisted wires 3 and 5 may change. By making the twisting directions of the twisted pair wires 3 and 5 different from the twisting direction of the aggregate 7, it is possible to form the aggregate 7 while suppressing changes in the twist pitches P1 and P2 of the twisted pair wires 3 and 5. Become.

However, if the twisting pitches P1 and P2 of the twisted pair wires 3 and 5 are large, the twisting of the twisted pair wires 3 and 5 may become loose when the assembly 7 is twisted together. Therefore, it is desirable that the twist pitches P1 and P2 of the twisted pair wires 3 and 5 be at least smaller than the twist pitch P3 of the aggregate 7. That is, when the twisting directions of the twisted pair wires 3 and 5 are different from the twisting direction of the aggregate 7, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 should be smaller than the twist pitch P3 of the aggregate 7. Thus, the twist of the twisted pair wires 3 and 5 is less likely to be broken, and the sectional shape of the aggregate 7 can be stabilized.

In the present embodiment, since the curl habit of the assembly 7 is corrected by the curl habit caused by winding the tape member 8, the winding pitch P4 of the tape member 8 needs to be made small enough to impart the curl habit. is there. Therefore, it is desirable that the winding pitch P4 of the tape member 8 be smaller than at least the twist pitch P3 of the aggregate 7. In this embodiment, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 are about 30 mm, the twist pitch P3 of the assembly 7 is about 60 mm, and the winding pitch P4 of the tape member 8 is about 30 mm.

The winding pitch P4 of the tape member 8 may be set to be equal to or larger than the twist pitches P1 and P2 of the twisted pair wires 3 and 5. By doing so, the distortion of the tape member 8 in the portion in contact with the twisted pair wires 3 and 5 can be reduced, and the cross-sectional shape of the composite cable 1 can be easily formed into a circular shape.

When the winding pitch P4 of the tape member 8 is smaller than the twisting pitches P1 and P2 of the twisted pair wires 3 and 5, the tape member 8 having a small winding pitch P4 expands and contracts in the longitudinal direction when the composite cable 1 is bent. Therefore, the load due to bending is less likely to be received, and the load due to bending is concentrated on the twisted pair wires 3 and 5 in which the twist pitches P1 and P2 are large and it is difficult to expand and contract in the longitudinal direction. By setting the winding pitch P4 of the tape member 8 to be equal to or greater than the twist pitches P1, P2 of the twisted pair wires 3, 5, the tape member 8 bears a part of the load due to bending, and the twisted pair wires 3, 5 are bent. It is possible to prevent the load from being concentrated, and it is possible to improve the bending durability.

Further, by making the twist direction of the aggregate 7 different from the winding direction of the tape member 8, the twist pitch P3 of the aggregate 7 is less likely to change when the tape member 8 is wound, and the twist pitch P3 of the aggregate 7 is less likely to change. Can be stabilized.

Furthermore, by making the twisting direction of the assembly 7 different from the winding direction of the tape member 8, it is possible to prevent the tape member 8 from getting into the gap between the twisted pair wires 3, 5 and the third electric wire 6. The cross-sectional shape of the composite cable 1 can be made closer to a circular shape. As a result, the appearance of the composite cable 1 can be improved and the stripping operation for removing the sheath 9 can be easily performed. As described above, since the bending tendency is suppressed in the composite cable 1, the strip operation for removing the sheath 9 is easier.

Furthermore, by making the twisting direction of the aggregate 7 different from the winding direction of the tape member 8, the direction in which the aggregate 7 is likely to buckle and the direction in which the tape member 8 is likely to buckle can be made different. Even if the cable 1 is twisted and bent at the same time, it is possible to realize the composite cable 1 that is difficult to buckle.

(Description of composite harness using composite cable 1)
FIG. 3 is a schematic configuration diagram of the composite harness according to the present embodiment.

As shown in FIG. 3, the composite harness 11 includes at least one end of the composite cable 1 according to the present embodiment and the ends of the first electric wire 2, the second electric wire 4, and the third electric wire 6. And a connector attached to the.

In FIG. 3, the left side in the figure shows the end on the wheel 102 side, and the right side in the figure shows the end on the vehicle body 105 side (the relay box 106 side). In the following description, the wheel 102 side end of the composite harness 11 is referred to as “one end”, and the vehicle body 105 side (relay box 106 side) end is referred to as “other end”.

An ABS sensor 104a formed by resin molding so as to cover the end portion of the first electric wire 2 is attached to one end portion of the pair of first electric wire 2 (first pair twisted wire 3). On the other end of the electric wire 2 (first twisted pair wire 3), a vehicle body side ABS connector 13 for connection with the electric wire group 107 in the relay box 106 is attached.

An air pressure sensor connector 14a for connection with the air pressure sensor 108 is attached to one end portion of the pair of second electric wires 4 (second pair twisted wire 5), and the pair of second electric wires 4 (second pair). At the other end of the stranded wire 5), a vehicle body side connector 14b for an air pressure sensor for connecting to the wire group 107 in the relay box 106 is attached.

The wheel-side power supply connector 12a for connection with the EPB electric motor 101a is attached to one end of the pair of third electric wires 6, and the relay box 106 is attached to the other end of the pair of third electric wires 6. A vehicle body side power supply connector 12b for connection with the electric wire group 107 therein is attached.

In addition, here, the case where the connectors are individually provided to the first electric wire 2 (first twisted pair wire 3), the second electric wire 4 (second twisted pair wire 5), and the third electric wire 6 has been described. A dedicated connector for collectively connecting 2, 4, 6 may be provided.

(Operation and Effect of Embodiment)
As described above, the composite cable 1 according to the present embodiment includes the tape member 8 that is spirally wound around the assembly 7, and the twisted directions of the twisted pair wires 3 and 5 are the same. Yes, the twisting directions of the paired twisted wires 3 and 5 are different from the twisting direction of the assembly 7, and the twisting direction of the assembly 7 and the winding direction of the tape member 8 are different.

By providing the tape member 8, the friction between the electric wires 2, 4, 6 and the sheath 9 can be reduced and the stress applied to the electric wires 2, 4, 6 at the time of bending can be reduced without using a lubricant such as talc powder. Thus, it becomes possible to improve the bending resistance. That is, according to the present embodiment, it is possible to suppress deterioration of the work environment for terminal processing while maintaining bending durability.

Further, by twisting the twisted directions of the twisted pair wires 3 and 5 and the twisted direction of the aggregate 7, and by making the twisted direction of the aggregate 7 different from the winding direction of the tape member 8, the twisting or the tape member 8 is formed. It is possible to suppress the bending tendency due to the winding of the wire and stabilize the twist pitches P1 to P3 of the twisted pair wires 3 and 5 and the assembly 7. As a result, it is possible to suppress the variation in bending characteristics, and it is possible to realize the composite cable 1 which has stable flexibility in the longitudinal direction and is easy to route. Furthermore, since the cross-sectional shape of the composite cable 1 can be made closer to a circular shape, the work of stripping the sheath 9 becomes easy.

(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, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

[1] A pair of first electric wires (2) having a first central conductor (21) and a first insulator (22) coated on the outer periphery of the first central conductor (21) are twisted together. Pair of second electric wires having a first pair twisted wire (3), a second central conductor (41), and a second insulator (42) coated on the outer circumference of the second central conductor (41). A second twisted pair wire (5) formed by twisting (4), and a third central conductor (61) having a larger cross-sectional area than the first central conductor (21) and the second central conductor (41). A third insulator (62) covering the outer periphery of the third central conductor (61), and having a larger outer diameter than the first electric wire (2) and the second electric wire (4), and A pair of third electric wires (6) arranged between the first pair twisted wire (3) and the second pair twisted wire (4) in the circumferential direction, and the first pair twisted wire (3), A second twisted pair (5), and a tape member (8) spirally wound around an assembly (7) formed by twisting the pair of third electric wires (6), The twisted directions of the paired twisted wires (3, 5) are the same, the twisted direction of the paired twisted wires (3, 5) and the twisting direction of the aggregate (7) are different, and A composite cable (1) in which the twisting direction of the assembly (7) and the winding direction of the tape member (8) are different.

[2] The twist pitch of the paired twisted wires (3, 5) is smaller than the twist pitch of the aggregate (7), and the winding pitch of the tape member (8) is the twist of the aggregate (7). The composite cable (1) according to [1], which is smaller than the pitch and is equal to or more than the twist pitch of the pair of twisted wires (3, 5).

[3] The composite cable (1) according to [1] or [2], wherein a surface of the tape member (8) that comes into contact with the aggregate (7) is made of a nonwoven fabric, paper, or a resin layer. ).

[4] The third electric wire (6) is a power supply line for supplying a drive current to an electric motor (101a) for an electric parking brake (101) mounted on a wheel (102) of a vehicle (100). The composite cable (1) according to any one of [1] to [3].

[5] At least one of the paired twisted wires (3, 5) is a signal wire for a sensor mounted on a wheel (102) of a vehicle (100), and is any one of [1] to [4]. A composite cable (1) according to item.

[6] The aggregate (7) includes the first twisted pair wire (3), the second twisted pair wire (5), the pair of third wires (6), and the tape member (8). A plurality of threaded interpositions (10) disposed between the plurality of interpositions (10), the plurality of interpositions (10) including the first twisted pair wire (3), the second twisted pair wire (5), and It is twisted together with a pair of third electric wires (6), and the twisting direction of the plurality of interpositions (10) is the same as the twisting direction of the aggregate (7), and the winding direction of the tape member (8). The composite cable (1) according to any one of [1] to [5], which is the same as the above.

[7] The composite cable (1) according to any one of [1] to [6] and the first electric wire (2), the second electric wire (4), and the third electric wire (6). A composite harness (11), comprising: a connector attached to at least one of the ends.

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 combinations of the features described in the embodiments are essential to the means for solving the problems of the invention.

The present invention can be appropriately modified and implemented without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1... Composite cable 2... 1st electric wire 21... 1st center conductor 22... 1st insulator 3... 1st pair twisted wire 4... 2nd electric wire 41... 2nd center conductor 42... 2nd insulator 5... 2nd pair Stranded wire 6... Third electric wire 61... Third central conductor 62... Third insulator 7... Aggregate 8... Tape member 9... Sheath 10... Interposition

Claims (7)

A pair of first electric wires having a first center conductor and a first insulator coated on the outer periphery of the first center conductor;
A second twisted pair wire formed by twisting a pair of second electric wires having a second center conductor and a second insulator covering the outer periphery of the second center conductor;
A third center conductor having a cross-sectional area larger than that of the first center conductor and the second center conductor, and a third insulator coated on the outer periphery of the third center conductor. A pair of third electric wires having an outer diameter larger than that of the two electric wires and arranged between the first twisted pair and the second twisted pair in the circumferential direction;
A tape member that is spirally wound around an assembly formed by twisting the first pair of twisted wires, the second pair of twisted wires, and the pair of third electric wires;
Equipped with
The twisting directions of the pair of twisted wires are the same,
The twisting direction of the paired twisted wires and the twisting direction of the aggregate are different, and the twisting direction of the aggregate and the winding direction of the tape member are different,
Composite cable. A part of the pair of twisted wires is inserted between the pair of third electric wires,
The composite cable according to claim 1. The tape member has a surface in contact with the aggregate, which is made of non-woven fabric, paper, or a resin layer,
The composite cable according to claim 1 or 2. The third electric wire is a power supply wire for supplying a drive current to an electric motor for an electric parking brake mounted on a wheel of a vehicle.
The composite cable according to any one of claims 1 to 3. At least one of the pair of twisted wires comprises a signal wire for a sensor mounted on a vehicle wheel,
The composite cable according to any one of claims 1 to 4. The assembly has a plurality of thread-shaped interpositions arranged between the first twisted pair wire, the second twisted pair wire, the pair of third wires, and the tape member,
The plurality of interpositions are twisted together with the first twisted pair wire, the second twisted pair wire, and the pair of third wires,
The twisting direction of the plurality of interpositions is the same as the twisting direction of the aggregate, and is different from the winding direction of the tape member,
The composite cable according to any one of claims 1 to 5. A composite cable according to any one of claims 1 to 6,
A connector attached to at least one of the ends of the first electric wire, the second electric wire, and the third electric wire,
Composite harness.

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