JP7096989B2 - Composite cable and composite harness - Google Patents

Description

The present invention relates to a composite cable and a composite harness, and more 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 (Electric Parking Brake, EPB) are known.

The electromechanical brake is also simply called an electric brake or an electric brake, and is a dedicated electric motor provided on each wheel of the vehicle according to the amount of operation (pedal force or displacement) of the brake pedal by the driver. By controlling the rotational driving force of the vehicle and pressing the brake pad against the disc rotor of the wheel by the piston driven by the electric motor, the braking force according to the driver's intention is generated.

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

Further, in recent vehicles, sensors such as an ABS (Anti-lock Brake System) sensor that detects the rotational speed of the running wheel, an air pressure sensor that detects the tire 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 controlling the electromechanical brake and the power supply line for supplying power to the electric motor for the electromechanical brake and the electric parking brake are made into a common sheath. The accommodated composite cable is used to connect the wheel side and the vehicle body side. A cable in which a connector is integrally provided at the 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. A composite cable has been proposed in which the stress applied to the electric wire is reduced and the bending resistance is improved.

Japanese Unexamined Patent Publication No. 2014-135153

However, the composite cable described in Patent Document 1 has a problem that a lubricant such as talc powder scatters in the workplace and causes deterioration of the working environment when the terminal is processed.

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

In the present invention, for the purpose of solving the above problems, 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 are twisted together. A first pair of twisted wires, and a second pair of twisted wires in which a pair of second electric wires having a second center conductor and a second insulator coated on the outer periphery of the second center conductor are twisted together. It has a first center conductor, a third center conductor having a larger cross-sectional area than the second center conductor, and a third insulator coated on the outer periphery of the third center conductor, and has the first electric wire and the first wire. A pair of third electric wires having a larger outer diameter than the two electric wires and arranged between the first pair stranded wire and the second pair stranded wire in the circumferential direction, the first pair stranded wire, and the first pair. The two pairs of twisted wires and a tape member spirally wound around an aggregate formed by twisting the pair of third electric wires are provided, and the twisting direction of the two pairs of twisted wires and the twisting direction of the aggregate are provided. Provided is a composite cable in which the twisting direction is the same and the twisting direction of the aggregate is different from the winding direction of the tape member.

Further, for the purpose of solving the above problems, the present invention is attached to at least one of the composite cable and the ends of the first electric wire, the second electric wire, and the third electric wire. Provided is a composite harness with a connector provided with.

According to the present invention, it is possible to provide a composite cable and a composite harness capable of suppressing deterioration of the working environment for terminal processing while maintaining bending resistance.

It is a block diagram which shows the structure of the vehicle which used 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, and (b) is a diagram illustrating a twisting direction of both pairs of twisted wires and a third electric wire and a winding direction of a 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]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

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

As shown in FIG. 1, the 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 wheels 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 the brake pad is moved by the rotational drive of the EPB electric motor 101a to move the brake pad to the wheel 102. It is configured to be pressed against the disc rotor of the wheel to generate 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, and a braking force is generated 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 depressed, and brakes. The pad is configured to be separated from the disc rotor of the wheel to release the braking force on the wheel 102. That is, the operating state of the EPB 101 is configured to be maintained from the time the parking brake operating switch 101c is turned on until the parking brake operating switch 101c is turned off or the accelerator pedal is depressed. The parking brake operation switch 101c may be a lever type or pedal type switch.

Further, the 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 running wheel 102, 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 so that the wheels 102 are not locked at the time of sudden stop, and controls the braking force of the wheels 102, and is mounted on the ECU 103. A pair of first electric wires 2 are connected to the ABS sensor 104a as signal lines.

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

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

Although only one wheel 102 is shown in FIG. 1 for the sake of simplification of the figure, even if the EPB electric motor 101a, the ABS sensor 104a, and the pneumatic sensor 108 are mounted on each wheel 102 of the vehicle 100. Often, for example, it may be mounted only on the front wheels of the vehicle 100 or only on the rear wheels.

(Explanation 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 pairs of twisted wires and a third electric wire and a winding direction of a tape member. ..

As shown in FIGS. 2 (a) and 2 (b), in the composite cable 1, the first pair of twisted wires 3 in which a pair of first electric wires 2 are twisted together and the pair of second electric wires 4 are twisted together. A second pair of stranded wires 5 and 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 stranded wires 3, a second pair of stranded wires 5, and a pair. A tape member 8 is spirally wound around an aggregate 7 formed by twisting the third electric wire 6 of the above, and a sheath 9 coated on the outer periphery of the tape member 8 is provided.

In the present embodiment, the first electric wire 2 is composed of a signal line for the ABS sensor 104a mounted on the wheel 102. The first electric wire 2 has a first center conductor 21 and a first insulator 22 coated on the outer periphery of the first center conductor 21.

The first central conductor 21 is made of a twisted wire conductor obtained by twisting a wire having good conductivity such as copper, and the first insulator 22 is made of an insulating resin such as cross-linked polyethylene. As the wire used for 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. If a wire with a diameter of less than 0.05 mm is used, sufficient mechanical strength may not be obtained and the bending resistance may decrease. If a wire with a diameter larger than 0.30 mm is used, the composite cable 1 is flexible. There is a risk of reduced sex.

Further, in the present embodiment, the second electric wire 4 is composed of a signal line for the pneumatic sensor 108 mounted on the wheel 102. The second electric wire 4 has a second center conductor 41 and a second insulator 42 coated on the outer periphery of the second center conductor 41. The second central conductor 41 is made of a twisted wire conductor obtained by twisting a wire having good conductivity such as copper, and the second insulator 42 is made of an insulating resin such as cross-linked polyethylene. As the wire used for the second center conductor 41, the same as that of 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 comprises a power supply line for supplying a drive current to the EPB electric motor 101a mounted on the wheel 102 of the vehicle 100. The third electric wire 6 has a third center conductor 61 and a third insulator 62 coated on the outer periphery of the third center conductor 61. The third central conductor 61 is made of a twisted wire conductor obtained by twisting a wire having good conductivity such as copper, and the third insulator 62 is made of an insulating resin such as cross-linked polyethylene. As the wire used for the third center conductor 61, the same as the first center conductor 21 and the second center 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 center conductor 61 of the third electric wire 6 and the thickness of the third insulator 62 may be appropriately set according to the required magnitude of the drive current. 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. 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 line for supplying a drive current to the EPB electric motor 101a, the outer diameter of the third center conductor 61 is 1.5 mm or more and 3.0 mm or less. 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 diameter of the first electric wire 2 and the second electric wire 4. In the present embodiment, a pair of (two) first wires 2 are twisted together to form a first pair twisted wire 3, and a pair (two) of second wires 4 are twisted together to form a second pair twisted wire 5. And the pair of first electric wires 2 are twisted to form an aggregate 7, so that the first electric wire 2 and the second electric wire 4 are the first from the viewpoint of making the outer diameter of the composite cable 1 closer to a circular shape. 3 It can be said that it is desirable to use an electric wire 6 having an outer diameter of about half.

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, the conductor cross-sectional area of the first center conductor 21 is 0.13 mm ² or more and 0.30 mm ² or less, and as the second electric wire 4, the conductor cross-sectional area of the second center conductor 41 is Those of 0.30 mm ² or more and 0.50 mm ² 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 both 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 both electric wires 2 and 4 are made substantially equal (for example, the difference between the outer diameters of both electric wires 2 and 4 is the outer diameter of the electric wire 2). It can be said that it is desirable to be within 20% of.

The twist pitch P1 of the first pair stranded wire 3 and the twist pitch P2 of the second pair stranded 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 is recommended to set it so that unnecessary load is not applied. Here, the twist pitches P1 and P2 of the double twisted wires 3 and 5 are set to about 30 mm, but the twisted pitches P1 and P2 of the paired twisted wires 3 and 5 are not limited to this. Further, the twist pitches P1 and P2 of the two pairs of twisted wires 3 and 5 may be different from each other. The twist pitch P1 of the first pair of twisted wires 3 is an interval along the longitudinal direction of the first pair of twisted wires 3 at which any first electric wire 2 is at the same position in the circumferential direction of the first pair of twisted wires 3. be. Further, the twist pitch P2 of the second pair stranded wire 5 is an interval along the longitudinal direction of the second pair stranded wire 5 in which any second electric wire 4 is at the same position in the circumferential direction of the second pair stranded wire 5. be.

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

When the third electric wire 6 is arranged so as to be adjacent to each other in the circumferential direction (when both pair twisted wires 3 and 5 are arranged so as to be adjacent to each other), the center of gravity of the aggregate 7 is from the center position of the aggregate 7. If the two pairs of twisted wires 3 and 5 and the third electric wire 6 are twisted to form an aggregate 7 in this state, the aggregate 7 will be in a twisted state as a whole. Therefore, it becomes difficult to manufacture the linear composite cable 1, and there is a problem that the flexibility is lowered because a direction that is difficult to bend is generated in a part of the longitudinal direction. As in the present embodiment, the linear composite cable 1 can be easily provided by arranging the third electric wire 6 between the first pair stranded wire 3 and the second pair stranded wire 5 in the circumferential direction. In addition, it is possible to suppress a problem that a direction that is difficult to bend occurs in a part of the longitudinal direction, and it is possible to suppress a decrease in flexibility.

Further, in the present embodiment, a thread-like (fiber) extending in the longitudinal direction of the composite cable 1 between the first pair of twisted wires 3, the second pair of twisted wires 5, the pair of third electric wires 6, and the tape member 8. The aggregate 7 was formed by arranging a plurality of interpositions 10 in the shape) and twisting them together with the double twisted wires 3 and 5 and the third electric wire 6. 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 gap between the double twisted wires 3 and 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 aggregate 7. The cross-sectional shape is made closer to a circular shape. It should be noted that a part of the plurality of interpositions 10 is a valley between the pair of twisted wires 3 and 5 and the third electric wire 6, a valley between the pair of the first electric wires 2 or a pair of the second electric wires 4. It may also be placed in a valley between them.

As the interposition 10, polypropylene yarn, fibrous material such as sufu yarn (rayon staple fiber), aramid fiber, nylon fiber, or fibrous 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 cross-sectional area of the first electric wire 2, the second electric wire 4, and the third electric wire 6. It should be larger than the total cross-sectional area of 4 and 6.

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 anti-twisted 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 to reduce the cost.

Further, in the present embodiment, the first pair stranded wire 3 that transmits an electric signal when the vehicle is traveling by the pair of third electric wires 6 that mainly supply the drive current to the EPB 101 after the vehicle is stopped, and the traveling of the vehicle as well. It is separated from the second pair stranded wire 5 that sometimes transmits an electric signal. This makes it possible to reduce the crosstalk between the first pair of twisted wires 3 and the second pair of twisted wires 5 even if the shield conductors provided around the paired twisted wires 3 and 5 are omitted.

Although the case where the third electric wire 6 supplies the driving current to the EPB electric motor 101a is described here, the third electric wire 6 is, for example, an electromechanical brake provided on the wheel 102 (for example). Hereinafter, it may be used to supply a drive current to an electric motor (referred to as EMB). In this case, since the drive current frequently flows through the third electric wire 6, the antitwisted wires 3 and 5 are used to suppress the influence of noise on the first electric wire 2 and the second electric wire 4 used as signal lines. It can be said that it is desirable to provide a shield conductor around (or around each of the electric wires 2 and 4).

Further, although the case where the first electric wire 2 is the signal line for the ABS sensor 104a and the second electric wire 4 is the signal line for the pneumatic sensor 108 is described here, 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, a damper line used for controlling the vibration damping device of the vehicle 100, and further may be an EMB control. It may be a signal line (CAN cable or the like) for.

The outer diameter of the entire aggregate 7 is, for example, about 5 mm to 9 mm. The twist pitch P3 of the aggregate 7 may be set so as not to apply an unnecessary load to the anti-twisted wires 3 and 5 and the third electric wire 6 in consideration of the outer diameter of the aggregate 7. Here, the twist pitch P3 of the aggregate 7 is set to about 60 mm, but 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 arbitrary anti-twisted wires 3, 5 or the third electric wire 6 are at the same position in the circumferential direction of the aggregate 7.

A tape member 8 is spirally wound around the aggregate 7, and the tape member 8 includes all electric wires (a pair of first electric wires 2, a pair of second electric wires 4, and a pair of electric wires 4) covered by the tape member 8. And a pair of third wires 6). The tape member 8 is interposed between the aggregate 7 and the sheath 9, and plays a role of reducing friction between the aggregate 7 (electric wires 2, 4, 6) and the sheath 9 at the time of bending. That is, by providing the tape member 8, friction between the electric 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 at the time of bending can be reduced. It is possible to reduce the stress applied to the material and improve the bending resistance.

The tape member 8 is slippery (coefficient of friction) 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. It is desirable to use a small one), and for example, one made of a non-woven fabric, paper, or a resin (resin film or the like) can be used. More specifically, as the tape member 8, the friction coefficient (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 coefficient smaller than the friction coefficient (static friction coefficient) between, and 62.

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

The tape member 8 is spirally wound around the aggregate 7 so that a part of the tape member 8 in the width direction (direction perpendicular to the longitudinal direction and the thickness direction of the tape member 8) overlaps. The width on which the tape members 8 overlap is, for example, 1/4 or more and 1/2 or less of the width of the tape members 8. In addition, in this embodiment, the portion where the tape members 8 overlap is not adhered by an adhesive or the like.

The width of the tape member 8 may be such that wrinkles do not form on the tape member 8 when the tape member 8 is wound, and the tape member 8 whose width is narrower as the outer diameter of the entire aggregate 7 becomes smaller is used. 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 distance along the longitudinal direction in which the tape member 8 is at the same position in the circumferential direction (for example, the distance between one ends in the width direction) is the width and the overlap width of the tape member 8 (tape member). It depends on the winding angle of 8), and in this case, the maximum is about 40 mm. Here, the winding pitch P4 of the tape member 8 is set to about 30 mm, but the winding pitch P4 of the tape member 8 is not limited to this.

If the width of the tape member 8 is increased and the winding pitch P4 is increased, the tape member 8 becomes closer to a vertically attached 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 is 40 mm or less.

A sheath 9 is provided around the tape member 8. The sheath 9 is made of, for example, urethane resin. 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, so that 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 use of the third electric wire 6.

(Twisting direction of the anti-twisted wires 3 and 5 and the aggregate 7, winding direction of the tape member 8)
In the composite cable 1 according to the present embodiment, the twisting direction of the double twisted wires 3 and 5 and the twisting direction of the aggregate 7 are the same, and the twisting direction of the aggregate 7 and the winding direction of the tape member 8 are different. It's in a different direction.

The twisting direction referred to here is based on the electric wires 2, 4, and 6 when the composite cable 1 is viewed from the tip side (the left side of FIG. 2B, the side where the overlapping of the tape members 8 is on the upper side). The direction of rotation from the end side to the tip side. Here, the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 are clockwise (clockwise). The twisting direction of the anti-twisted wires 3 and 5 is the direction in which the two electric wires 2 and 4 are twisted together, and the twisting direction of the aggregate 7 is the twisting direction of the anti-twisted wires 3 and 5 and the third electric wire 6. It is the direction of twisting.

Further, the winding direction of the tape member 8 is the winding direction of the tape member 8 from the base end side when the composite cable 1 is viewed from the tip side (the left side of FIG. 2B, the side on which the overlap of the tape members 8 is on the top). 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 pair of twisted wires 3 is the broken line arrow A, the twisting direction of the second pair of twisted wires 5 is the broken line arrow B, and the set. The twisting direction of the body 7 is represented by the broken line arrow C, and the winding direction of the tape member 8 is represented by the broken line arrow D.

In the present embodiment, in the side view of FIG. 2B (side view in a state where the composite cable 1 is linearly arranged left and right with the tip side on the left side and the base end side on the right side), the tape member 8 is used. It is wound so as to go up to the left, and the antitwisted wires 3 and 5 and the third electric wire 6 constituting the aggregate 7 are twisted so as to go down to the left. That is, in the side view of FIG. 2B, the direction in which the tape member 8 is inclined and the twisted wires 3, 5 and the third electric wire 6 (or between the twisted wires 3, 5 and the third electric wire 6). The direction in which the groove) is inclined is opposite to the direction in which the groove) is inclined. Further, the electric wires 2 and 4 constituting the anti-twisted wires 3 and 5 are twisted so as to be downward to the left in the side view of FIG. 2 (b). Therefore, in the side view of FIG. 2B, the direction in which the electric wires 2 and 4 (or the groove between the electric wires 2 and 4) is inclined is opposite to the direction in which the tape member 8 is inclined. The stranded wires 3 and 5 and the third electric wire 6 (or the groove between the stranded wires 3 and 5 and the third electric wire 6) are in the same direction as the inclined direction. The "inclined direction" here is a direction in which the composite cable 1 is inclined with respect to the longitudinal direction (that is, the left-right direction).

By setting the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 in the same direction, the anti-twisted wires 3 and 4 are twisted when the aggregate 7 is twisted. The anti-twisted wires 3 and 5 and the third electric wire 6 are twisted in a direction along the bending habit given to the fifth wire. Therefore, when the composite cable 1 bends, the twisted wires 3 and 5 and the third electric wire 6 are synchronized and expand and contract in the longitudinal direction of the composite cable 1, so that the composite cable 1 is easily bent and the composite cable 1 is bent. It becomes possible to improve the flexibility of the cable.

Further, in the present embodiment, since the aggregate 7 is formed by twisting the anti-twisted wires 3 and 5 in the direction along the bending habit, the sheath 9 is not manually unwound, and a dedicated strip device or the like is used. When the sheath 9 and the tape member 8 are removed at the same time, the twisted wires 3 and 5 and the third electric wire 6 are easily maintained in a twisted state due to the influence of the bending habit of the twisted wires 3 and 5. Become. When the removal length of the sheath 9 is lengthened during terminal processing, the stripping work is performed in a plurality of times, but in the composite cable 1, the antitwisted wires 3 and 5 and the third electric wire are performed even after the stripping work is performed once. Since 6 and 6 are maintained in a twisted state, it becomes possible to easily perform a plurality of strip operations.

Further, by setting the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 to be the same direction, when the terminal is processed, the twist of the aggregate 7 is untwisted and the anti-twisted wires 3 and 5 are twisted. Will be unraveled naturally, and it will be easier to unravel the wires 2, 4 and 6. As a result, the dismantability of the composite cable 1 is improved, and the workability when processing the terminal is improved.

Furthermore, by making the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 the same direction, when the composite cable 1 is twisted, the anti-twisted wires 3 and 5 and the aggregate 7 are combined. Will open and close in synchronism, making it possible to improve durability against twisting.

In this regard, when the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 are opposite to each other, for example, when the composite cable 1 is twisted in the direction in which the aggregate 7 is opened (untwisted). In, the twists of the anti-twisted wires 3 and 5 are tightened, the stress due to the twist is concentrated on the first electric wire 2 and the second electric wire 4, and an excessive load is applied to a part of the first electric wire 2 and the second electric wire 4. There is a risk. Further, when the composite cable 1 is twisted in the direction in which the aggregate 7 is closed (twist is tightened), the twists of the anti-twisted wires 3 and 5 are untwisted, and the stress due to the twist is concentrated on the third electric wire 6. An excessive load may be applied to a part of the third electric wire 6. Therefore, in the present embodiment, the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 are set to be the same direction, and the anti-twisted wires 3 and 5 and the aggregate 7 are opened and closed in synchronization with each other. I am doing it. This makes it possible to improve the durability of the composite cable 1 against twisting.

In this embodiment, since the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 are the same, the twisting pitches P1 and P2 of the anti-twisted wires 3 and 5 and the twisting pitch of the aggregate 7 are set. If P3 is the same, the positional relationship between the first electric wire 2 and the second electric wire 4 and the third electric wire 6 is always the same in the longitudinal direction, and the appearance of the composite cable 1 may be distorted. Therefore, the twist pitches P1 and P2 of the anti-twisted wires 3 and 5 and the twisted pitch P3 of the aggregate 7 are made different (specifically, the twisted pitches P1 and P2 of the anti-twisted wires 3 and 5 are set to the aggregate 7). It is desirable that the twist pitch P3 of the aggregate 7 is 10% or more and 80% or less smaller than the twist pitch P3 of the aggregate 7. If the twist pitches P1 and P2 of the anti-twist wires 3 and 5 are made larger than the twist pitch P3 of the aggregate 7, the twist pitches P1 and P2 of the anti-twist wires 3 and 5 will fluctuate when the aggregate 7 is twisted. It is desirable that the twist pitches P1 and P2 of the anti-twisted wires 3 and 5 are at least smaller than the twist pitch P3 of the aggregate 7.

When the twist pitch P3 of the aggregate 7 is made small, the composite cable 1 becomes easy to bend and the flexibility is improved, but there is no room for twisting and the durability against twisting is lowered. On the contrary, when the twist pitch P3 of the aggregate 7 is increased, the durability against twisting is improved, but the flexibility is lowered. In the present embodiment, when twisting is applied, the twisted wires 3 and 5 and the aggregate 7 can be opened and closed in synchronization to disperse the load, so that the twist pitch P3 of the aggregate 7 is reduced. Even when the flexibility is improved, it is possible to sufficiently secure the durability against twisting.

Further, in the present embodiment, since the twisting direction of the aggregate 7 and the winding direction of the tape member 8 are different, the bending habit of the aggregate 7 and the bending habit of winding the tape member 8 are opposite to each other. Therefore, they cancel each other out, and it is possible to easily realize a linear composite cable 1 in which bending habits are suppressed. As a result, it becomes possible to suppress variations in bending characteristics in the longitudinal direction of the composite cable 1.

In the present embodiment, since the bending habit of the aggregate 7 is corrected by the bending habit of winding the tape member 8, it is necessary to reduce the winding pitch P4 of the tape member 8 to such that the bending habit can be imparted. be. Therefore, it is desirable that the winding pitch P4 of the tape member 8 is at least smaller than the twisting pitch P3 of the aggregate 7. In the present embodiment, the twist pitches P1 and P2 of the anti-twisted wires 3 and 5 are set to about 30 mm, the twist pitch P3 of the aggregate 7 is set to about 60 mm, and the winding pitch P4 of the tape member 8 is set to about 30 mm.

Further, the winding pitch P4 of the tape member 8 may be set to the twist pitches P1 and P2 or more of the anti-twisted wires 3 and 5. By doing so, it is possible to reduce the distortion of the tape member 8 at the portion in contact with the anti-twisted wires 3 and 5, and it becomes easy to form the cross-sectional shape of the composite cable 1 into a circular shape.

If the winding pitch P4 of the tape member 8 is smaller than the twist pitches P1 and P2 of the anti-twisted wires 3 and 5, when the composite cable 1 is bent, the tape member 8 having a small winding pitch P4 expands and contracts in the longitudinal direction. Therefore, the load due to bending is less likely to be received, and the load due to bending is concentrated on the anti-twisted wires 3 and 5 having large twist pitches P1 and P2 and difficult to expand and contract in the longitudinal direction. By setting the winding pitch P4 of the tape member 8 to the twist pitches P1 and P2 or more of the anti-twisted wires 3 and 5, a part of the load due to bending is borne by the tape member 8 and the anti-twisted wires 3 and 5 are bent. It is possible to suppress the concentration of load and improve the bending durability.

Further, by making the twisting 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.

Further, by making the twisting direction of the aggregate 7 different from the winding direction of the tape member 8, it is possible to prevent the tape member 8 from entering the gap between the twisted wires 3 and 5 and the third electric wire 6. The cross-sectional shape of the tape member 8 when the sheath 9 is extruded and coated on the outer periphery of the tape member 8 can be made closer to a circular shape. As a result, the appearance of the composite cable 1 can be improved and the stripping work for removing the sheath 9 can be easily performed. The composite cable 1 according to the present embodiment has a cross-sectional shape close to a circular shape, and even after the stripping work is performed once due to the influence of the bending habit of the twisted wires 3 and 5, the twisted wires 3 and 5 and the first Since the 3 electric wires 6 are maintained in a twisted state, it becomes possible to more easily perform a plurality of strip operations.

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, for example, a composite. Even when twisting and bending are applied to the cable 1 at the same time, it is possible to realize the composite cable 1 which is hard to buckle.

(Explanation 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 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. It is configured with a connector attached to it.

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

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

A connector 14a for a pneumatic sensor for connection with the pneumatic sensor 108 is attached to one end of a pair of second electric wires 4 (second pair twisted wire 5), and a 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 connection with the electric wire group 107 in the relay box 106 is attached.

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

In addition, although the case where the connector is provided individually for the 1st electric wire 2 (the 1st stranded wire 3), the 2nd electric wire 4 (the 2nd stranded wire 5), and the 3rd electric wire 6 is described here, each electric wire is described. A dedicated connector for connecting 2, 4 and 6 at once may be provided.

(Actions and effects of embodiments)
As described above, the composite cable 1 according to the present embodiment includes the tape member 8 spirally wound around the aggregate 7, and the twist directions and the aggregate 7 of the two pairs of twisted wires 3 and 5. The twisting direction is the same, and the twisting direction of the aggregate 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 is reduced without using a lubricant such as talc powder, and the stress applied to the electric wires 2, 4, 6 at the time of bending is reduced. Therefore, it becomes possible to improve the bending resistance. That is, according to the present embodiment, it is possible to suppress deterioration of the working environment for terminal processing while maintaining bending durability.

Further, by making the twisting direction of the two pairs of twisted wires 3 and 5 the same as the twisting direction of the aggregate 7, and the twisting direction of the aggregate 7 and the winding direction of the tape member 8 are different, the durability against twisting is achieved. While improving the properties, the cross-sectional shape of the tape member 8 around the assembly 7 can be made closer to a circular shape to facilitate stripping work of the sheath 9, and durability against twisting and terminal processing can be performed. Workability can be improved together.

Further, the flexibility can be improved by making the twisting direction of the anti-twisted wires 3 and 5 and the twisting direction of the aggregate 7 the same direction, and the twisting direction of the aggregate 7 and the winding direction of the tape member 8 can be set. Since the bending habit can be corrected by using different directions, it is possible to realize the composite cable 1 which is easy to bend and has little variation in bending characteristics in the longitudinal direction and has good arrangement.

(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 respective reference numerals and the like in the following description are not limited to the members and the like in which the components within the scope of the claims are specifically shown in the embodiment.

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

[2] The twist pitch of the double 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 equal to or larger than the twist pitch of the double twisted wires (3, 5).

[3] The composite cable (1) according to [1] or [2], wherein the surface of the tape member (8) in contact with the aggregate (7) is made of any of non-woven fabric, paper, and a resin layer. ).

[4] The third electric wire (6) comprises 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] Any one of [1] to [4], wherein at least one of the double twisted wires (3, 5) is a signal line for a sensor mounted on a wheel (102) of a vehicle (100). The composite cable (1) described in the section.

[6] The aggregate (7) includes the first pair of twisted wires (3), the second pair of twisted wires (5), the pair of third electric wires (6), and the tape member (8). It has a plurality of filamentous interpositions (10) arranged between the above, and the plurality of interpositions (10) are the first pair of twisted wires (3), the second pair of twisted wires (5), and the above 1. It is twisted together with the 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 different from the above.

[7] Of the composite cable (1) according to any one of [1] to [6], 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. It should also be noted that not all combinations of 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.

1 ... Composite cable 2 ... 1st electric wire 21 ... 1st central conductor 22 ... 1st insulator 3 ... 1st pair of twisted wires 4 ... 2nd electric wire 41 ... 2nd central conductor 42 ... 2nd insulator 5 ... 2nd pair Twisted wire 6 ... 3rd electric wire 61 ... 3rd center conductor 62 ... 3rd insulator 7 ... Aggregate 8 ... Tape member 9 ... Sheath 10 ... Intervention

Claims (5)

A pair of first twisted wires having a first center conductor and a pair of first electric wires having a first insulator coated on the outer periphery of the first center conductor are twisted together.
A second pair of twisted wires in which a pair of second electric wires having a second center conductor and a second insulator coated on the outer periphery of the second center conductor are twisted together.
It has a first center conductor, a third center conductor having a larger cross-sectional area than the second center conductor, and a third insulator coated on the outer periphery of the third center conductor, and has the first electric wire and the first wire. A pair of third electric wires having a larger outer diameter than the two electric wires and arranged between the first pair stranded wire and the second pair stranded wire in the circumferential direction.
A tape member spirally wound around an aggregate 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 direction of the two pairs of twisted wires and the twisting direction of the aggregate are the same, and the twisting direction of the aggregate and the winding direction of the tape member are different.
A composite cable in which the first pair of twisted wires and the pair of third electric wires are in contact with the tape member. The twist pitch of both pairs of twisted wires is smaller than the twist pitch of the aggregate.
The winding pitch of the tape member is smaller than the twist pitch of the aggregate and is equal to or greater than the twist pitch of both pairs of twisted wires.
The composite cable according to claim 1. The third electric wire comprises a power supply line for supplying a driving current to an electric motor for an electric parking brake mounted on a wheel of a vehicle.
The composite cable according to claim 1 or 2. At least one of the two pairs of twisted wires consists of a signal line for a sensor mounted on a wheel of a vehicle.
The composite cable according to any one of claims 1 to 3. The composite cable according to any one of claims 1 to 4, and the composite cable.
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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