JP7112811B2 - Composite cable and composite harness - Google Patents

Description

TECHNICAL FIELD The present invention relates to a composite cable and composite harness, and more particularly to a composite cable and composite harness for connecting a wheel side and a vehicle body side in a vehicle such as an automobile.

2. Description of the Related Art In recent years, electric braking devices have been used in vehicles such as automobiles.

Electro-mechanical brakes (EMB) and electric parking brakes (EPB) are known as electric braking devices.

Electromechanical brakes, also simply called electric brakes or electric brakes, are dedicated electric motors provided for each wheel of the vehicle, depending on the amount of operation (depression force or displacement) of the brake pedal by the driver. is controlled, and the piston driven by the electric motor presses the brake pad against the disk rotor of the wheel, thereby generating braking force in accordance with the intention of the driver.

In the electric parking brake, when the driver operates a parking brake activation switch after the vehicle has stopped, a dedicated electric motor provided for each wheel of the vehicle is driven, and a piston driven by the electric motor drives the brake pad. is pressed against the disc rotor of the wheel to generate a braking force.

In addition, in recent vehicles, sensors such as ABS (Anti-lock Brake System) sensors that detect the rotational speed of the wheels while driving, air pressure sensors that detect the air pressure of the tires, and temperature sensors are mounted on the wheels. There are many things.

Therefore, the signal line for the sensor mounted on the wheel, the signal line for controlling the electromechanical brake, and the power line that supplies power to the electric motor for the electromechanical brake and the electric parking brake are connected to a common sheath. A housed composite cable is used to connect the wheel side and the vehicle body side. A composite cable in which a connector is integrally provided at the end of the composite cable is called a composite harness.

In Patent Document 1, a lubricant such as talc powder is interposed between a plurality of wires and a sheath that collectively covers the plurality of wires, thereby reducing friction between the wires and the sheath, and Composite cables have been proposed in which the stress applied to the wires is reduced and the bending resistance is improved.

JP 2014-135153 A

However, in the composite cable described in Patent Document 1, there is a problem that lubricant such as talc powder scatters in the work place during terminal processing, which causes deterioration of work environment.

SUMMARY OF THE INVENTION Accordingly, 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 bending resistance.

An object of the present invention is to solve the above problems by twisting a pair of first electric wires each having a first central conductor and a first insulator covering the outer periphery of the first central conductor. a second twisted wire pair obtained by twisting a pair of second electric wires having a first twisted wire pair, a second central conductor, and a second insulator covering the outer periphery of the second central conductor; a third central conductor having a larger cross-sectional area than the first central conductor and the second central conductor; and a third insulator covering an outer circumference of the third central conductor, a pair of third electric wires having an outer diameter larger than that of the second electric wire and arranged between the first twisted wire pair and the second twisted wire pair in the circumferential direction; two twisted wire pairs, and a tape member spirally wound around an assembly formed by twisting the pair of third electric wires, wherein the direction of twisting of both the twisted wire pairs and the direction of To provide a composite cable in which the twisting direction is the same direction, and the twisting direction of the aggregate is different from the winding direction of the tape member.

Further, in order to solve the above-described problems, the present invention provides a cable attached to at least one of the ends of the composite cable, the first electric wire, the second electric wire, and the third electric wire. and a composite harness.

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

1 is a block diagram showing the configuration of a vehicle using a composite cable according to one embodiment of the invention; FIG. (a) is a cross-sectional view of a composite cable according to an embodiment of the present invention, and (b) is a diagram for explaining the twisting direction of both twisted pairs and a third electric wire and the winding direction of a tape member in the composite cable. is. 1 is a schematic configuration diagram of a composite harness according to one embodiment of the present invention; FIG.

[Embodiment]
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

(Description of vehicles to which composite cables are applied)
FIG. 1 is a block diagram showing the configuration of a vehicle using a composite cable according to this 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 section 101b.

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

Although not shown, the EPB electric motor 101a is provided with a piston to which a brake pad is attached. It is configured to press against the disk rotor of the wheel to generate a braking force. A pair of third electric wires 6 are connected to the EPB electric motor 101a as power lines for supplying drive current to the EPB electric motor 101a.

When the parking brake activation switch 101c is turned on from the off state while the vehicle 100 is stopped, the EPB control unit 101b outputs drive current to the EPB electric motor 101a for a predetermined time (for example, one second). , 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 turned off from the ON state or when the accelerator pedal is depressed. It is configured to move the pads away from the disc rotor of the wheel to release the braking force on the wheel 102 . In other words, the operating state of the EPB 101 is maintained after the parking brake activation switch 101c is turned on until the parking brake activation switch 101c is turned off or the accelerator pedal is depressed. The parking brake activation switch 101c may be a lever type switch or a pedal type switch.

In addition, the vehicle 100 is equipped with an ABS device 104 . The ABS device 104 includes an ABS sensor 104a and an ABS controller 104b.

The ABS sensor 104 a is a rotation speed detection sensor that detects the rotation speed of the wheel 102 during running, 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 at the time of sudden stop, and is mounted on the ECU 103. A pair of first electric wires 2 are connected to the ABS sensor 104a as signal lines.

Wheels 102 of vehicle 100 are provided with air pressure sensors 108 that detect the air pressure of tires (not shown) provided on wheels 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 tire air pressure based on the output of the air pressure sensor 108 .

The composite cable 1 according to the present embodiment is formed by collectively covering the first electric wire 2, the second electric wire 4 and the third electric wire 6 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 a battery (not shown) via the electric wire group 107. .

In FIG. 1, only one wheel 102 is shown for simplification of the drawing, but the EPB electric motor 101a, the ABS sensor 104a, and the air pressure sensor 108 are mounted on each wheel 102 of the vehicle 100. Well, for example, it may be mounted only on the front wheels of the vehicle 100 or only on the rear wheels.

(Description of Composite Cable 1)
FIG. 2(a) is a cross-sectional view of the composite cable 1 according to the present embodiment, and FIG. 2(b) is a diagram for explaining the twisting direction of both twisted pairs and the third electric wire and the winding direction of the tape member. .

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

In this embodiment, the first electric wire 2 is a signal line for the ABS sensor 104a mounted on the wheel 102. As shown in FIG. The first electric wire 2 has a first central conductor 21 and a first insulator 22 covering the outer periphery of the first central conductor 21 .

The first center conductor 21 is made of a stranded wire conductor in which highly conductive strands of copper or the like are twisted together, and the first insulator 22 is made of insulating resin such as crosslinked 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 be reduced. performance may decrease.

Further, in the present embodiment, second electric wire 4 is a signal line for air pressure sensor 108 mounted on wheel 102 . The second electric wire 4 has a second central conductor 41 and a second insulator 42 covering the outer periphery of the second central conductor 41 . The second central conductor 41 is made of a stranded wire conductor in which highly conductive strands of copper or the like are twisted together, and the second insulator 42 is made of insulating resin such as crosslinked polyethylene. As the wire used for the second central conductor 41, a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used as in the case of the first central conductor 21. FIG.

Further, in the present embodiment, the third electric wire 6 is a power line for supplying drive current to the EPB electric motor 101 a mounted on the wheel 102 of the vehicle 100 . The third electric wire 6 has a third central conductor 61 and a third insulator 62 covering the outer periphery of the third central conductor 61 . The third central conductor 61 is made of a stranded wire conductor in which highly conductive strands of copper or the like are twisted together, and the third insulator 62 is made of insulating resin such as crosslinked polyethylene. As the wire used for the third central conductor 61 , a wire having a diameter of 0.05 mm or more and 0.30 mm or less can be used like the first central conductor 21 and the second central conductor 41 .

The cross-sectional area (conductor cross-sectional area) of the third central conductor 61 of the third 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, 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 line. The cross-sectional area (conductor cross-sectional area) is set larger than that of the central conductor 41 . In this embodiment, considering that the third wire 6 is a power wire for supplying a drive current to the electric motor 101a for EPB, the outer diameter of the third central conductor 61 is set to 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 wire pair 3 is obtained by twisting one pair (two) of first electric wires 2, and a second twisted wire pair 5 is obtained by twisting one pair (two) of second electric wires 4. and a pair of first electric wires 2 are twisted together to form an assembly 7, so from the viewpoint of making 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 3 It can be said that it is desirable to use one having an outer diameter about half of the electric wire 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, the conductor cross-sectional area of the first central 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 central conductor 41 is 0.30 mm ² or more and 0.50 mm ² or less was used. In the present embodiment, the conductor cross-sectional area of the second electric wire 4 is set to be larger than that of the first electric wire 2, but the electric wires 2 and 4 may have the same conductor cross-sectional area. From the viewpoint of making the cross-sectional shape of the composite cable 1 closer to a circular shape, the outer diameters of both wires 2 and 4 should be substantially equal (for example, the difference between the outer diameters of both wires 2 and 4 may be 20% or less) is desirable.

The twist pitch P1 of the first twisted wire pair 3 and the twist pitch P2 of the second twisted wire pair 5 are set in consideration of the outer diameters of the first wire 2 and the second wire 4. It should be set to the extent that unnecessary load is not applied. Although the twist pitches P1 and P2 of the twisted pair wires 3 and 5 are set to about 30 mm here, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 are not limited to this. Also, the twist pitches P1 and P2 of both twisted pairs 3 and 5 may be different from each other. The twist pitch P1 of the first twisted wire pairs 3 is the interval along the longitudinal direction of the first twisted wire pairs 3 at which any first wires 2 are at the same position in the circumferential direction of the first twisted wire pairs 3. be. The twist pitch P2 of the second twisted wire pairs 5 is the interval along the longitudinal direction of the second twisted wire pairs 5 at which any second electric wires 4 are at the same position in the circumferential direction of the second twisted wire pairs 5. be.

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

When the third wires 6 are arranged adjacent to each other in the circumferential direction (when both the twisted pair wires 3 and 5 are arranged adjacent to each other), the center of gravity of the assembly 7 is shifted from the central position of the assembly 7. If the twisted wire pairs 3 and 5 and the third electric wire 6 are twisted together in this state to form an assembly 7, the assembly 7 will be twisted as a whole. As a result, it becomes difficult to fabricate the straight composite cable 1, and there arises a problem that the flexibility is lowered due to occurrence of a direction in which it is difficult to bend in a part of the longitudinal direction. By arranging the third wire 6 between the first twisted wire pair 3 and the second twisted wire pair 5 in the circumferential direction as in the present embodiment, the straight composite cable 1 can be easily formed. In addition, it is possible to suppress the deterioration of the flexibility by suppressing the problem that the bending is difficult to occur in a part of the longitudinal direction.

Furthermore, in the present embodiment, between the first twisted wire pair 3, the second twisted wire pair 5, the pair of third electric wires 6 and the tape member 8, filamentous (fiber ) are arranged and twisted together with both twisted wire pairs 3 and 5 and the third wire 6 to constitute the assembly 7 . For this reason, the twist direction and twist pitch of the plurality of inclusions 10 are the same as the twist direction and twist pitch of the aggregate 7 . A plurality of intermediates 10 are arranged so as to fill the gaps between both twisted pairs 3 and 5, the third electric wire 6, and the tape member 8, and when the tape member 8 is wound around the outer circumference of the assembly 7, The cross-sectional shape is made closer to a circular shape. Some of the plurality of intervening wires 10 are located between the twisted wire pairs 3, 5 and the third wire 6, between the pair of first wires 2, or between the pair of second wires 4. It may also be located in a valley that is between

As the interposition 10, fibrous bodies such as polypropylene yarn, staple yarn (rayon staple fiber), aramid fiber, nylon fiber, or fiber-based plastic, paper, or cotton yarn can be used. 2A, the cross-sectional area of the intervention 10 is the sum of the cross-sectional areas 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 drive current for a short period of time when the parking brake activation 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, shield conductors provided around the third electric wire 6 and the twisted pair wires 3 and 5 are omitted. By omitting the shield conductor, it is possible to reduce the outer diameter of the composite cable 1 compared with the case where the shield conductor is provided, and it is also possible to reduce the number of parts and suppress the cost.

Further, in the present embodiment, the pair of third wires 6 that mainly supply drive current to the EPB 101 after the vehicle stops serves as the first twisted wire pair 3 that transmits electrical signals when the vehicle is running, and the The second twisted wire pair 5 that transmits electrical signals is spaced apart. As a result, crosstalk between the first twisted wire pair 3 and the second twisted wire pair 5 can be reduced even if the shield conductor provided around the twisted wire pairs 3 and 5 is omitted.

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

Also, 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 explained. may be a signal line used for other sensors provided in the wheel 102, such as a temperature sensor, or may be a damper line used for controlling the vibration damping device of the vehicle 100, or may be EMB control. It may be a signal line (CAN cable, etc.).

The outer diameter of the aggregate 7 as a whole is, for example, about 5 mm to 9 mm. The twist pitch P3 of the assembly 7 should be set in consideration of the outer diameter of the assembly 7 so that the twisted pair wires 3 and 5 and the third electric wire 6 are not subjected to an unnecessary load. Although the twist pitch P3 of the aggregates 7 is set to about 60 mm here, the twist pitch P3 of the aggregates 7 is not limited to this. The twist pitch P3 of the aggregate 7 is the interval along the longitudinal direction of the aggregate 7 at which arbitrary twisted pairs 3 and 5 or third electric wires 6 are 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 (one pair of first electric wires 2, one pair of second electric wires 4, and a pair of third wires 6). The tape member 8 is interposed between the aggregate 7 and the sheath 9 and serves to reduce friction between the aggregate 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 art, and the wires 2, 4, 6 can be bent when bent. It is possible to reduce the stress applied to and improve the bending resistance.

As the tape member 8, the tape member 8 is a tape member that is slippery (having a coefficient of friction of For example, non-woven fabric, paper, or resin (resin film, etc.) can be used. More specifically, the tape member 8 has a coefficient of friction (static friction coefficient) between the tape member 8 and the insulators 22, 42, 62 that is the same as the sheath 9 and the insulators 22, 42 when the tape member 8 is not provided. , 62 (static friction coefficient).

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

The tape member 8 is spirally wound around the assembly 7 so that a portion of the width direction (the direction perpendicular to the longitudinal direction and thickness direction of the tape member 8) overlaps. 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 portion where the tape member 8 overlaps is not adhered with an adhesive or the like.

The width of the tape member 8 may be set to the extent that the tape member 8 does not wrinkle when the tape member 8 is wound, and the narrower the tape member 8, the smaller the outer diameter of the aggregate 7 as a whole. is desirable. Specifically, when the aggregate 7 has an outer diameter of 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 ends in the width direction) is the width of the tape member 8 and the overlapping width (tape member 8 winding angle), in which case the maximum is about 40 mm. Although the winding pitch P4 of the tape member 8 is set to about 30 mm here, 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 close to being vertically attached, and the flexibility of the composite cable 1 is lost, making it 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 drive current to the electric motor 101a for EPB. Although the shield conductor is omitted, a shield conductor may be provided between the tape member 8 and the sheath 9 or around the outer circumference of the sheath 9 depending on the use of the third electric wire 6 or the like.

(Twisting direction of twisted pair wires 3, 5 and assembly 7, winding direction of tape member 8)
In composite cable 1 according to the present embodiment, the twisting direction of both twisted pairs 3 and 5 and the twisting direction of assembly 7 are the same, and the twisting direction of assembly 7 and the winding direction of tape member 8 are the same. are in different directions.

The twisting direction here means that the wires 2, 4, and 6 are the base when the composite cable 1 is viewed from the tip side (the left side in FIG. 2(b), the side where the tape members 8 overlap). Refers to 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 twist direction of the twisted wire pairs 3 and 5 is the direction in which the two wires 2 and 4 are twisted together, and the twist direction of the assembly 7 is the direction in which the twisted wire pairs 3 and 5 and the third wire 6 are twisted. This is the direction of twisting.

Also, the winding direction of the tape member 8 means that when the composite cable 1 is viewed from the distal end side (the left side in FIG. 2B, the side where the tape member 8 overlaps upward), the tape member 8 is Refers to the direction of rotation toward the tip side. Here, the winding direction of the tape member 8 is right-handed (clockwise). FIG. 2(a) shows a cross-sectional view when viewed from the tip side, in which the twisting direction of the first twisted wire pair 3 is indicated by a broken line arrow A, the twisting direction of the second twisted pair wire 5 is indicated by a broken line arrow B, and the The twisting direction of the body 7 is indicated by a dashed arrow C, and the winding direction of the tape member 8 is indicated by a dashed arrow D.

In the present embodiment, in a side view of FIG. 2B (a side view in which the composite cable 1 is arranged in a straight line on the left and right with the distal side on the left side and the proximal side on the right side), the tape member 8 is The twisted pair wires 3, 5 and the third wire 6 constituting the assembly 7 are wound so as to go up to the left and 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 wire pairs 3 and 5 and the third wire 6 (or between the twisted wire pairs 3 and 5 and the third wire 6) The direction in which the groove) is inclined is the opposite direction. The electric wires 2 and 4 constituting the twisted pair wires 3 and 5 are twisted so as to descend to the left when viewed from the side in FIG. 2(b). Therefore, in the side view of FIG. 2B, the direction in which the wires 2 and 4 (or the grooves between the wires 2 and 4) are inclined is opposite to the direction in which the tape member 8 is inclined. The direction is the same as the direction in which the twisted wires 3 and 5 and the third wire 6 (or the groove between the twisted wire pairs 3 and 5 and the third wire 6) are inclined. In addition, the “tilting direction” here means a direction tilting with respect to the longitudinal direction (that is, left-right direction) of the composite cable 1 .

By making the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the assembly 7 the same direction, when the assembly 7 is twisted together, the two electric wires 2 and 4 are twisted to form the twisted pair wires 3 and 4. The twisted wire pairs 3 and 5 and the third electric wire 6 are twisted together in the direction along the bending habit imparted to the wire 5 . Therefore, when the composite cable 1 is bent, the twisted pair wires 3, 5 and the third electric wire 6 are synchronously expanded and contracted in the longitudinal direction of the composite cable 1, so that the composite cable 1 is easily bent. flexibility can be improved.

Further, in the present embodiment, since the bundle 7 is formed by twisting the twisted pair wires 3 and 5 in the direction along the curving habit, the sheath 9 is not manually unwound and can be removed by a dedicated stripping device or the like. When the sheath 9 and the tape member 8 are removed at the same time, the twisted wire pairs 3 and 5 and the third electric wire 6 are likely to be maintained in a twisted state due to the influence of the bending habit of the twisted wire pairs 3 and 5. Become. In order to increase the length of sheath 9 to be removed during terminal processing, the stripping operation is performed in a plurality of times. 6 are maintained in a twisted state, it becomes possible to easily perform multiple stripping operations.

Furthermore, by making the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the aggregate 7 the same direction, when the twist of the aggregate 7 is untwisted during terminal processing, the twist of the twisted pair wires 3 and 5 can be increased. are naturally loosened, and the electric wires 2, 4, 6 are easily loosened. As a result, the disassembly of the composite cable 1 is improved, and the workability in terminal processing is improved.

Furthermore, by setting the twisting direction of the twisted pair wires 3, 5 and the twisting direction of the aggregate 7 to be the same, when the composite cable 1 is twisted, the twisted pair wires 3, 5 and the aggregate 7 are are opened and closed in synchronism, and it is possible to improve the durability against torsion.

In this regard, when the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the assembly 7 are opposite, for example, when the composite cable 1 is twisted in the direction in which the assembly 7 opens (untwists), , the twisting of the twisted pair wires 3 and 5 is tightened, the stress due to twisting is concentrated on the first wire 2 and the second wire 4, and an excessive load is applied to a part of the first wire 2 and the second wire 4. There is a risk. Further, when twisting is applied to the composite cable 1 in the direction in which the assembly 7 is closed (twisting is tightened), the twisting of the twisted pair wires 3 and 5 is loosened, and the stress due to the twisting concentrates on the third wire 6, An excessive load may be applied to a portion of the third electric wire 6 . Therefore, in the present embodiment, the twisting direction of the twisted pair wires 3, 5 and the twisting direction of the aggregate 7 are set to be the same, and the twisted pair wires 3, 5 and the aggregate 7 are opened and closed in synchronism. I'm trying This makes it possible to improve the durability of the composite cable 1 against twisting.

In the present embodiment, since the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the aggregate 7 are the same, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 and the twist pitch of the aggregate 7 If P3 is the same, the positional relationship between the first electric wire 2, 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 become distorted. Therefore, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 should be different from the twist pitch P3 of the aggregate 7 (specifically, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 should 10% or more and 80% or less of the twist pitch P3 of the assembly 7). If the twist pitches P1 and P2 of the twisted pair wires 3 and 5 are made larger than the twist pitch P3 of the assembly 7, the twist pitches P1 and P2 of the twisted pair wires 3 and 5 fluctuate when the assembly 7 is twisted together. Therefore, it is desirable that the twist pitches P1 and P2 of the twisted pairs 3 and 5 are at least smaller than the twist pitch P3 of the assembly 7.

If the twist pitch P3 of the assembly 7 is reduced, the composite cable 1 can be easily bent and the flexibility is improved, but there is no room for twisting and the durability against twisting is lowered. Conversely, if the twist pitch P3 of the assembly 7 is increased, the resistance to twisting is improved, but the flexibility is reduced. In the present embodiment, when a twist is applied, the twisted wire pairs 3, 5 and the assembly 7 open and close in synchronism to distribute the load, so the twist pitch P3 of the assembly 7 is reduced. Even if the flexibility is improved by using the sintered body, it is possible to sufficiently ensure the durability against twisting.

In addition, in the present embodiment, the twisting direction of the aggregate 7 and the winding direction of the tape member 8 are different, so that the bending tendency of the aggregate 7 and the bending tendency caused by winding the tape member 8 are in opposite directions. Therefore, it is possible to easily realize a straight composite cable 1 with suppressed bending tendency. As a result, it is possible to suppress variations in bending characteristics in the longitudinal direction of the composite cable 1 .

In the present embodiment, the bending tendency of the assembly 7 is corrected by the bending tendency caused by winding the tape member 8. Therefore, it is necessary to reduce the winding pitch P4 of the tape member 8 to the extent that the bending tendency 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 assembly 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.

Also, the winding pitch P4 of the tape member 8 may be set equal to or greater than the twist pitches P1, P2 of the twisted pair wires 3, 5. FIG. By doing so, the distortion of the tape member 8 at 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.

If the winding pitch P4 of the tape member 8 is smaller than the twisting pitches P1 and P2 of the twisted pairs 3 and 5, the tape member 8 with the smaller winding pitch P4 expands and contracts in the longitudinal direction when the composite cable 1 is bent. Therefore, the load due to bending is concentrated on the twisted pair wires 3 and 5, which have large twist pitches P1 and P2 and are 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 and P2 of the twisted pair wires 3 and 5, the tape member 8 bears part of the load due to bending, and the twisted wire pairs 3 and 5 are subjected to bending. Concentration of the load can be suppressed, and bending durability can be improved.

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

Furthermore, by making the twisting direction of the assembly 7 and the winding direction of the tape member 8 different, the tape member 8 is prevented from entering the gap between the twisted wire pairs 3 and 5 and the third electric wire 6. , the cross-sectional shape of the tape member 8 when the outer periphery of the tape member 8 is covered with the sheath 9 by extrusion can be made closer to a circular shape. As a result, it is possible to improve the appearance of the composite cable 1 and facilitate the stripping operation for removing the sheath 9 . The composite cable 1 according to the present embodiment has a cross-sectional shape close to a circular shape, and the twisted pair wires 3 and 5 and the twisted pair wires 3 and 5 do not have the same shape even after the stripping operation is performed once due to the influence of the bending tendency of the twisted pair wires 3 and 5 . Since the three electric wires 6 are maintained in a twisted state, it becomes possible to easily perform the stripping operation a plurality of times.

Furthermore, by making the twisting direction of the assembly 7 and the winding direction of the tape member 8 different, the direction in which the assembly 7 tends to buckle can be made different from the direction in which the tape member 8 tends to buckle. Even when twisting and bending are applied to the cable 1 at the same time, the composite cable 1 that is hard to buckle can be realized.

(Description of Composite Harness Using Composite Cable 1)
FIG. 3 is a schematic configuration diagram of a composite harness according to this embodiment.

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

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

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

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

A wheel-side power connector 12a for connection with 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 vehicle body side power connector 12b is attached for connection with the electric wire group 107 inside.

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

(Actions and effects of the embodiment)
As described above, the composite cable 1 according to the present embodiment includes the tape member 8 spirally wound around the assembly 7, is the same direction as the twisting direction of the tape member 8, 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 wires 2, 4, 6 and the sheath 9 can be reduced without using a lubricant such as talc powder, and the stress applied to the wires 2, 4, 6 when bending can be reduced. Therefore, it becomes possible to improve the bending resistance. In other words, according to the present embodiment, it is possible to suppress deterioration of the work environment for terminal processing while maintaining bending durability.

In addition, by making the twisting direction of both twisted pairs 3 and 5 and the twisting direction of the assembly 7 the same direction, and by making the twisting direction of the assembly 7 and the winding direction of the tape member 8 different, the resistance to twisting is improved. It is possible to easily strip the sheath 9 by making the cross-sectional shape of the tape member 8 around the assembly 7 closer to a circular shape, while improving the durability against twisting and the end processing. Workability can be improved together.

Furthermore, by making the twisting direction of the twisted pair wires 3 and 5 and the twisting direction of the assembly 7 the same direction, the flexibility can be improved, and the twisting direction of the assembly 7 and the winding direction of the tape member 8 are aligned. Since the bending tendency can be corrected by making the directions different, the composite cable 1 can be realized which is easy to bend and which has less variations in bending characteristics in the longitudinal direction and has good routing properties.

(Summary of embodiment)
Next, technical ideas understood from the embodiments described above will be described with reference to the reference numerals and the like in the embodiments. However, each reference numeral and the like in the following description do not limit the constituent elements in the claims to the members and the like specifically shown in the embodiment.

[1] A pair of first electric wires (2) having a first central conductor (21) and a first insulator (22) covering the outer periphery of the first central conductor (21) are twisted together A pair of second wires having a first twisted wire pair (3), a second central conductor (41), and a second insulator (42) covering the outer periphery of the second central conductor (41) A second twisted wire pair (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), having an outer diameter larger than that of the first wire (2) and the second wire (4), and a pair of third electric wires (6) arranged between the first twisted wire pair (3) and the second twisted wire pair (4) in the circumferential direction; the first twisted wire pair (3); A tape member (8) spirally wound around an assembly (7) formed by twisting the second twisted wire pair (5) and the pair of third wires (6), The twisting direction of both the twisted pairs (3, 5) and the twisting direction of the assembly (7) are the same, and the twisting direction of the assembly (7) and the winding of the tape member (8) A composite cable (1) with different directions.

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

[3] The composite cable (1) according to [1] or [2], wherein the surface of the tape member (8) that contacts the assembly (7) is made of any one of nonwoven fabric, paper, and resin layer ).

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

[5] Any one of [1] to [4], wherein at least one of the pair of twisted wires (3, 5) is a signal wire for a sensor mounted on a wheel (102) of a vehicle (100) A composite cable (1) according to clause 1.

[6] The assembly (7) includes the first twisted wire pair (3), the second twisted wire pair (5), the pair of third electric wires (6), and the tape member (8). a plurality of thread-like intervening wires (10) arranged between said intervening wires (10), said plurality of intervening wires (10) comprising said first twisted wire pair (3), said second twisted wire pair (5), and said one Twisted together with a pair of third wires (6), the twisting direction of the plurality of intermediates (10) is the same as the twisting direction of the assembly (7), and the winding direction of the tape member (8) A composite cable (1) according to any one of [1] to [5], which is different from

[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) and 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 scope of claims. Also, it should 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 gist thereof.

Reference Signs List 1 Composite cable 2 First wire 21 First central conductor 22 First insulator 3 First twisted pair wire 4 Second wire 41 Second central conductor 42 Second insulator 5 Second pair Twisted wire 6 Third wire 61 Third central conductor 62 Third insulator 7 Aggregate 8 Tape member 9 Sheath 10 Interposed

Claims (7)

a first twisted wire pair formed by twisting a pair of first electric wires having a first central conductor and a first insulator covering the outer periphery of the first central conductor;
a second twisted wire pair obtained by twisting a pair of second electric wires having a second central conductor and a second insulator covering the outer periphery of the second central conductor;
a third central conductor having a larger cross-sectional area than the first central conductor and the second central conductor; and a third insulator covering an outer circumference of the third central 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 wire pair and the second twisted wire pair in the circumferential direction;
a tape member spirally wound around an assembly formed by twisting the first twisted wire pair, the second twisted wire pair, and the pair of third electric wires;
the twisting direction of both twisted pairs and the twisting direction of the assembly are the same,
The twisting direction of the assembly is different from the winding direction of the tape member,
composite cable. A part of both the twisted pair wires is inserted between the pair of third electric wires,
the twist pitch of both twisted pairs is smaller than the twist pitch of the assembly,
The winding pitch of the tape member is smaller than the twist pitch of the assembly and equal to or greater than the twist pitch of the twisted pair.
The composite cable of Claim 1. The surface of the tape member that contacts the assembly is made of nonwoven fabric, paper, or a resin layer,
A composite cable according to claim 1 or 2. wherein the third wire comprises a power wire for supplying drive current to an electric motor for an electric parking brake mounted on a wheel of the vehicle;
A composite cable according to any one of claims 1 to 3. At least one of the twisted pair wires consists of a signal wire for a sensor mounted on a vehicle wheel,
A composite cable according to any one of claims 1 to 4. The assembly has a plurality of filamentous interpositions arranged between the first twisted wire pair, the second twisted wire pair, the pair of third electric wires, and the tape member,
the plurality of interposers are twisted together with the first twisted wire pair, the second twisted wire pair, and the third pair of wires;
The twist direction of the plurality of interposers is the same as the twist direction of the assembly and different from the winding direction of the tape member,
A 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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