CN116543972A

CN116543972A - Cable with improved cable characteristics

Info

Publication number: CN116543972A
Application number: CN202310103432.4A
Authority: CN
Inventors: 西村庆; 森山真至
Original assignee: Bomeilicheng Co ltd
Current assignee: Bomeilicheng Co ltd
Priority date: 2022-02-01
Filing date: 2023-01-30
Publication date: 2023-08-04
Also published as: JP2023112241A

Abstract

The invention provides a cable capable of realizing high noise resistance while suppressing cost increase. A cable (1) is provided with: a core (10) including a plurality of signal lines; a shield tape layer (17) that is formed of a shield tape (170) wound around the outer periphery of the core (10); a braided wire (18) provided on the outer periphery of the shield tape layer (17); and a sheath (19) provided on the outer periphery of the braided wire (18). The braided wire (18) is formed by braiding a plurality of first wires (181) spirally wound in one direction and a plurality of second wires (182) intersecting the plurality of first wires (181) and spirally wound in the opposite direction in a lattice shape, and the spiral winding pitches (P) of the plurality of first wires (181) and the plurality of second wires (182) ₁ ) Is 15mm or more and less than 40mm, and is a shielding tape layer(17) 4 times or more and 6 times or less of the outer diameter (D).

Description

Cable with improved cable characteristics

Technical Field

The present invention relates to a cable including a plurality of signal lines and braided wires.

Background

Conventionally, communication cables that transmit high-frequency signals through a plurality of signal lines, for example, are used for communication between devices in railway vehicles, for example, which have a shielding function against external electromagnetic waves. Such communication cables are required to have high noise resistance and low cost as compared with conventional communication cables as the railway vehicles are more highly functionalized in recent years.

The communication cable described in patent document 1 includes: a coated twist body formed by twisting a plurality of insulated wires; a clamping rope which is clamped and arranged among the plurality of insulated wires; a first shielding layer and a second shielding layer which are arranged on the periphery of the coating twist body; and a sheath provided on the outer circumferences of the first shielding layer and the second shielding layer. The first shielding layer is formed by winding a metal tape with a metal foil laminated on a resin tape. The second shielding layer is formed by transversely winding or braiding a plurality of wires made of tin-plated copper wires.

In addition, shielding performance of electromagnetic waves of communication cables at 100MHz or less is generally evaluated by surface transmission impedance. The surface transfer impedance is represented by the ratio of the current flowing through the outer layer of the shield induced by external noise and the potential difference induced between the signal line conductor and the shield layer by this current. The smaller the potential difference induced by the external noise, i.e., the smaller the surface transfer resistance, means that the higher the noise resistance can be obtained. The method of evaluating the surface transfer impedance is specified by IEC 62153-4-3.

Prior art literature

Patent literature

Patent document 1: international publication No. 2021/149787

Disclosure of Invention

Problems to be solved by the invention

As in the communication cable described in patent document 1, the first shielding layer made of a metal tape is provided inside the second shielding layer formed by winding or braiding a plurality of wires in the lateral direction, which contributes to improvement of noise resistance. However, even if such a shielding layer having a double layer structure is provided, the effect of reducing the surface transfer resistance against external noise in the vicinity of 1MHz to 20MHz is insufficient depending on the structure of the braided wire, and the required noise resistance may not be sufficiently satisfied. In addition, if the number of shielding layers is further increased, high noise resistance can be achieved, but in this case, there are problems such as an increase in cost, a decrease in bending resistance, and the like.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a cable capable of realizing high noise resistance while suppressing an increase in cost.

Means for solving the problems

The present invention has been made to solve the above problems, and an object of the present invention is to provide a cable comprising: a core including a plurality of signal lines; a shield band layer formed of a shield band wound around an outer periphery of the core; a braided wire provided on the outer periphery of the shield tape layer; and a sheath provided on the outer periphery of the braided wire, wherein the braided wire is formed by braiding a plurality of first wires spirally wound in one direction and a plurality of second wires intersecting the plurality of first wires and spirally wound in the opposite direction in a lattice shape, and the spiral winding pitch of the plurality of first wires and the plurality of second wires is 15mm or more and less than 40mm and is 4 times or more and 6 times or less the outer diameter of the shield tape layer.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the cable of the present invention, high noise resistance can be achieved while suppressing an increase in cost.

Drawings

Fig. 1 is a block diagram showing a cable according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the cable taken along line A-A of fig. 1.

Fig. 3 is an enlarged view showing a part of the braided wire of the cable in an enlarged manner.

Fig. 4 is a logarithmic graph of surface transfer impedance.

Fig. 5 is a cross-sectional view of a cable according to example 2.

Fig. 6 is a cross-sectional view of a cable according to example 3.

Fig. 7 is a cross-sectional view of a cable according to example 4.

Fig. 8 is a cross-sectional view of a cable according to example 5.

In the figure: 1-5 … cables; 10 A 20, 30, 40, 50 … core; 11-14, 21-23, 31-34, 41, 42, 51-54, … signal lines; 16 The winding tape is pressed by 25, 36, 45, 55, …;17, 26, 37,46 56, … shield tape layers; 170 A shielding tape of 260, 370, 460, 560, …;18 A braided wire of 27, 38, 47, 57 …;181 … first wire; 182 … second wire; 19 A 28, 39, 48, 58 … jacket; d … wire diameter; d … knitting lower diameter; p (P) ₁ … the pitch of the spiral windings of the first and second wires; p (P) ₂ … the twisting pitch of the plurality of signal lines; angle of inclination of θ … wire.

Detailed Description

Fig. 1 is a block diagram showing a cable 1 according to an embodiment of the present invention. Fig. 2 is a cross-sectional view of the cable 1 along the line A-A of fig. 1.

The cable 1 includes: a core 10 including first to fourth signal lines 11 to 14; a shield tape layer 17 composed of a shield tape 170 wound around the outer periphery of the core 10; a braided wire 18 provided on the outer periphery of the shield tape layer 17; and a sheath 19 provided on the outer periphery of the braided wire 18. The sheath 19 is made of, for example, a resin such as polyvinyl chloride (PVC), and is formed by extrusion through a tube or the like on the outer periphery of the braided wire 18. The cable 1 is, for example, a communication cable for communication between electrical components mounted on a railway vehicle.

The first to fourth signal lines 11 to 14 are insulated wires in which signal line conductors 111, 121, 131, 141 are covered with insulators 112, 122, 132, 142, and have a predetermined twisting pitch P ₂ The twist is spiral. Twist pitch P ₂ For example, the diameter may be 30mm to 70 mm. The signal wire conductors 111, 121, 131, 141 are twisted wires formed by twisting a plurality of signal wire members 110, 120, 130, 140 made of tin-plated annealed copper wires, tin-plated copper alloy wires, or the like, by concentric twisting or collective twisting. The cross-sectional area of the signal line conductors 111, 121, 131, 141 is, for example, 0.1mm ² The above. The first signal line 11 and the second signal line 12, and the third signal line 13 and the fourth signal line 14 are twisted pairs for transmitting differential signals, respectively. The twisted yarn may be a compressed twisted yarn in which a plurality of signal wire rods 110, 120, 130, 140 are compressed.

The core 10 includes first to fourth signal lines 11 to 14, an sandwiching string 15 disposed in a central portion surrounded by the first to fourth signal lines 11 to 14, and a pressing winding tape 16 press-wound around the outer circumferences of the first to fourth signal lines 11 to 14. The sandwiching rope 15 is made of, for example, a resin such as nylon or polypropylene, and has an outer surface thereof disposed in contact with the outer surfaces of the first to fourth signal lines 11 to 14. The outer diameter of the sandwiching string 15 is smaller than the outer diameters of the first to fourth signal lines 11 to 14, respectively, and may be equal to the outer diameters of the signal line conductors 111, 121, 131, 141, respectively. The pressing and winding tape 16 is made of, for example, a resin such as polyimide, and is spirally wound around the outer circumferences of the first to fourth signal wires 11 to 14.

The shielding tape 170 is a tape-shaped body having a resin layer 171 and a metal layer 172, and is wound around the outer periphery of the press-wound tape 16 in a spiral shape so that the metal layer 172 becomes an outer layer of the resin layer 171. The resin layer 171 is made of polyethylene terephthalate, for example. The metal layer 172 is made of, for example, aluminum or copper, and is deposited on one surface of the resin layer 171. Further, the metal layer 172 may be formed by adhering an aluminum foil or a copper foil to one surface of the resin layer 171. The winding direction of the shielding tape 170 may be a direction opposite to the winding direction in which the winding tape 16 is pressed. In addition, the winding pitch of the shielding tape 170 may be as large as possible. Thereby, the shielding performance of the cable 1 can be improved. For example, the winding pitch of the shielding tape 170 may be the same as or larger than the winding pitch of the press-wound tape 16. The shielding tape wound in a spiral overlapping manner is preferably 1 or more of 4 times the width of the overlapping tape.

Fig. 3 is an enlarged view showing a part of the braided wire 18 in an enlarged manner. The braided wire 18 is configured by braiding a plurality of first wires 181 spirally wound in one direction and a plurality of second wires 182 intersecting the plurality of first wires 181 and spirally wound in the opposite direction in a lattice shape. The first and second wires 181, 182 are made of, for example, tin-plated copper wires, and are connected to the metal layer 172 of the shield tape 170. The first and second wires 181 and 182 may be copper wires or aluminum wires.

The braided wire 18 has a plurality of first wire strands 183 each constituted by a plurality of first wires 181 and a plurality of second wire strands 184 each constituted by a plurality of second wires 182, and these first wire strands 183 and second wire strands 184 are braided. In fig. 3, θ represents the inclination of the first wire 181 and the second wire 182 with respect to the cable longitudinal direction (the left-right direction in fig. 3). Hereinafter, this θ will be referred to as a wire rod inclination angle.

In the example shown in fig. 2 and 3, 8 first wire bundles 183 and 8 second wire bundles 184 are braided, and the total number of these bundles, that is, the number of bundles (number of ingots) of braided wires 18 is 16. The number of first wires 181 included in one first wire bundle 183 and the number of second wires 182 included in one second wire bundle 184, that is, the number of clamps, are 10, respectively. That is, in the example shown in fig. 2 and 3, the knitting yarn 18 is constituted by the first wire bundle 183 of 8 bundles each constituted by 10 first wires 181 and the second wire bundle 184 of 8 bundles each constituted by 10 second wires 182. The number of clamps or the number of ingots is not limited to this, and may be appropriately changed according to changes in the outer diameter of the shield tape layer 17, the wire rod inclination angle θ, the knitting density, and the like.

If the cable 1 configured as described above is disposed in the vicinity of a motor or an inverter mounted on a railway vehicle, for example, a large external noise may be received. If the noise resistance of the cable 1 is low, countermeasures such as providing a shield around the cable or the cable must be taken, and therefore the cost and weight of the railway vehicle increase. In the present embodiment, the braided wire 18 is configured as follows in order to improve noise resistance by reducing surface transmission resistance.

(Structure of braided wire 18)

Spiral winding pitch P of first wire 181 and second wire 182 ₁ (refer to FIG. 1) is smaller than the twisting pitch P of the first to fourth signal lines 11 to 14 in the core 10 ₂ . Specifically, the spiral winding pitch P of the first wire 181 and the second wire 182 ₁ 15mm or more and less than 40mm, and 4 times or more and 6 times or less of the knitting lower diameter D (see fig. 2) as the outer diameter of the shield tape layer 17. The spiral winding distance P ₁ The first wires 181 and the second wires 182 are spirally wound, and the average distance in the cable length direction is the distance in which the first wires and the second wires travel during 1 turn of the outer circumference of the shield tape layer 17. The braid bottom diameter D is an average value of the outer diameters of the shield tape layers 17 in a cross section perpendicular to the longitudinal direction of the cable 1.

If at firstSpiral winding pitch P of one wire 181 and second wire 182 ₁ If the diameter is larger than 40mm or 6 times larger than the knitting lower diameter D, the wire inclination angle θ becomes smaller, the mutual inductance between the first wire bundle 183 and the second wire bundle 184 becomes larger, and the surface transfer resistance increases. On the other hand, if the spiral winding pitch P of the first wire 181 and the second wire 182 ₁ If the diameter is smaller than 15mm or smaller than 4 times the knitting lower diameter D, the wire inclination angle θ becomes larger than 45 °, the mutual inductance between the first wire bundle 183 and the second wire bundle 184 becomes larger, and the surface transfer resistance increases as described above. Further, when the wire inclination angle θ is increased, the number of turns of the first wire 181 and the second wire 182 per unit length of the cable 1 increases, and the manufacturing of the braided wire 18 takes time, which reduces the manufacturing efficiency.

The wire rod inclination angle θ is preferably 30 ° or more and 50 ° or less. Further, the spiral winding pitch P of the first wire 181 and the second wire 182 ₁ The knitting diameter D is 5 times or less, more preferably 25mm or less. If these conditions are satisfied, the mutual inductance between the first wire bundle 183 and the second wire bundle 184 can be further reduced, and also a decrease in manufacturing efficiency can be suppressed.

The knitting yarn 18 preferably has a yarn diameter d (see fig. 3) of 0.12mm or more of the first yarn 181 and the second yarn 182. If the wire diameter d is large, current easily flows through the first wire 181 and the second wire 182, and thus the surface transfer resistance decreases. The ratio of the area of the outer surface of the shield tape layer 17 covered with the braided wire 18, that is, the braiding density of the braided wire 18 is preferably 85% or more and less than 100%. The knitting density is 85% or more, so that intrusion of external noise into the inside of the knitting yarn 18 can be suppressed.

Example 1

Next, the measurement results of the surface transfer impedance of example 1 and the conventional example, which are more specific structural examples of the cable 1, will be described with reference to fig. 4. This embodiment 1 has the structure shown in fig. 1 to 3, and the spiral winding pitch P ₁ 22mm, wire inclination angle θ of 40.0 °, braid bottom diameter D of 5.5mm, wire diameter D of 0.14mm, braid density of 96%. On the other hand, in the conventional example, the structure is substantially similar to the structure shown in fig. 1 to 3The same structure, but the clamping number of the wires of the braided wire is 12, the ingot number is 16, and the spiral winding interval P of the wires ₁ 40mm, 24.3 ° in wire inclination angle θ, 0.12mm in wire diameter d, and 91% in braid density.

In addition, in embodiment 1, the twisting pitch P of the first to fourth signal lines 11 to 14 in the core 10 ₂ (see FIG. 1) is 47mm, and the pitch P of the spiral winding of the first wire 181 and the second wire 182 is ₁ For this purpose, twist pitch P ₂ Less than half of (a) of the total number of the components. The conductor cross-sectional areas of the signal line conductors 111, 121, 131, 141 of the first to fourth signal lines 11 to 14 are respectively 0.5mm ² . In the conventional example, the lower knitting diameter D was also set to 5.5mm, and the core 10 had the same structure as in example 1, but the twisting pitch P was set to ₂ Set to 78mm.

Fig. 4 is a logarithmic graph of surface transfer impedance, with the horizontal axis representing the frequency of extraneous noise. As shown in fig. 4, in example 1, the effect of reducing the surface transfer impedance against external noise around 1MHz to 20MHz is remarkable. As a result, in the structure of example 1, it is not necessary to add a shielding member or the like, and high noise resistance can be achieved while suppressing an increase in cost, as compared with the conventional example.

In the method for measuring the surface transmission impedance of the cable 1 according to IEC62153-4-3, the signal line conductors 111, 121, 131, 141 of the first to fourth signal lines 11 to 14 are exposed and bundled at both ends of the cable 1, an N-type connector is attached to one end, and a termination resistor is connected to the other end, i.e., a termination. Then, the surface transmission impedance is obtained from the current flowing outside the braided wire 18 when electromagnetic waves, which are external noise, are radiated to the cable 1 and the voltage generated at the terminal end portion of the cable 1. If the surface transmission impedance is large, electromagnetic waves easily enter the inside of the braided wire 18 from, for example, gaps between the plurality of first wire bundles 183 and the plurality of second wire bundles 184, but by reducing the surface transmission impedance, such entry of electromagnetic waves can be suppressed, and noise resistance can be improved.

Next, another example of the present embodiment will be described with reference to fig. 5 to 7. The materials and the like of the respective members constituting the cable of these other embodiments are the same as those of the members described above with reference to fig. 1 to 3. In fig. 5 to 7, the knitting yarn is indicated by cross hatching.

Example 2

Fig. 5 is a cross-sectional view of the cable 2 according to embodiment 2 of the present invention. The cable 2 includes: a core 20 formed by pressing and winding the pressing and winding belt 25 around the outer circumferences of the first to third signal wires 21 to 23 and the sandwiching string 24 which are spirally twisted; a shield tape layer 26 composed of a shield tape 260 wound around the outer periphery of the core 20; a braided wire 27 provided on the outer periphery of the shield tape layer 26, the braided wire being formed by braiding a plurality of wires in a lattice shape; and a sheath 28 provided on the outer periphery of the braided wire 27.

The first to third signal lines 21 to 23 are insulated wires formed by covering the signal line conductors 211, 221, 231 with insulators 212, 222, 232. The signal line conductors 211, 221, 231 are twisted wires formed by twisting a plurality of signal line wires 210, 220, 230, and the cross-sectional areas of the conductors are 0.5mm, respectively ² . First to third signal lines 21 to 23 and a twisting pitch P of an interposed rope 24 ₂ 57mm. The outer diameter of the shield tape layer 26, i.e., the braid lower diameter D, was 4.96mm. Further, the spiral winding pitch P of the plurality of wires of the braided wire 27 ₁ 24mm, wire tilt angle θ of 34.5 °, wire diameter of 0.12mm.

Example 3

Fig. 6 is a cross-sectional view of the cable 3 according to embodiment 3 of the present invention. The cable 3 includes: a core 30 formed by helically twisting the first to fourth signal lines 31 to 34 around the sandwiching string 35 arranged in the center, and press-winding the press-winding tape 36 around the outer circumferences of the first to fourth signal lines 31 to 34; a shield tape layer 37 composed of a shield tape 370 wound around the outer circumference of the core 30; a braided wire 38 provided on the outer periphery of the shield tape layer 37; and a sheath 39 provided on the outer periphery of the braided wire 38.

The first to fourth signal lines 31 to 34 are insulated wires formed by covering the signal line conductors 311, 321, 331, 341 with insulators 312, 322, 332, 342. The signal line conductors 311, 321, 331, 341 are twisted wires formed by twisting a plurality of signal line wires 310, 320, 330, 340, and the conductor cross-section is integratedAre respectively 0.5mm ² . Twisting pitch P of first to fourth signal lines 31 to 34 ₂ The outer diameter of the shield tape layer 37, i.e., the braid lower diameter D, was 67mm and 6.3mm. Spiral winding pitch P of multiple wires of braided wire 38 ₁ 28mm, wire tilt angle θ of 36.5 °, wire diameter of 0.12mm.

Example 4

A cable 4 according to embodiment 4 of the present invention will be described with reference to fig. 7. Fig. 7 is a cross-sectional view of the cable 4. The cable 4 includes: a core 40 formed by pressing and winding a pressing and winding belt 45 around the outer circumferences of the first and second signal wires 41, 42 and the first and second sandwiching strings 43, 44 wound in a spiral shape; a shield tape layer 46 composed of a shield tape 460 wound around the outer periphery of the core 40; a braided wire 47 provided on the outer periphery of the shield tape layer 46 and formed by braiding a plurality of wires in a lattice shape; and a sheath 48 provided on the outer periphery of the braided wire 47.

The first and second signal lines 41 and 42 are insulated wires formed by covering the signal line conductors 411 and 421 with insulators 412 and 422. The signal wire conductors 411 and 421 are twisted wires formed by twisting a plurality of signal wire rods 410 and 420, and the cross-sectional areas of the conductors are 0.75mm respectively ² . First and second signal lines 41, 42 and twisting pitch P of first and second sandwiching strings 43, 44 ₂ The outer diameter of the shield tape layer 46, i.e., the braid bottom diameter D, was 6.54mm for 59 mm. Spiral winding pitch P of a plurality of wires of braided wire 47 ₁ 36mm, wire tilt angle θ of 30.8 °, wire diameter of 0.12mm.

Example 5

Fig. 8 is a cross-sectional view of the cable 5 according to embodiment 5 of the present invention. The cable 5 includes: a core 50 formed by helically twisting the first to fourth signal lines 51 to 54 around the center portion and press-winding the press-winding tape 55 around the outer circumferences of the first to fourth signal lines 51 to 54; a shield tape layer 56 composed of a shield tape 560 wound around the outer periphery of the core 50; a braided wire 57 provided on the outer periphery of the shield tape layer 56; and a sheath 58 provided on the outer periphery of the braided wire 57.

The first to fourth signal lines 51 to 54 are connected to each other via insulators 512, 522, 532, 542Insulated wires formed to cover the signal wire conductors 511, 521, 531, 541. The signal wire conductors 511, 521, 531, 541 are twisted wires obtained by twisting a plurality of signal wire members 510, 520, 530, 540, and the cross-sectional areas of the conductors are 0.3mm, respectively ² . Twisting pitch P of first to fourth signal lines 51 to 54 ₂ The outer diameter of the shield tape layer 56, i.e., the braid bottom diameter D, was 4.0mm at 30 mm. Spiral winding pitch P of a plurality of wires of braided wire 57 ₁ 17mm, wire tilt angle θ of 38.4 °, wire diameter of 0.14mm.

The specification values of the cables 2 to 5 according to examples 2 to 5 are within the numerical ranges described in the above embodiments. Therefore, according to examples 2 to 5, high noise resistance can be obtained while suppressing an increase in cost.

(summary of embodiments)

Next, the technical ideas grasped from the above-described embodiments will be described with reference to the symbols and the like in the embodiments. However, the symbols in the following description are not limited to the components in the claims, and specifically indicate the components in the embodiments.

[1] A cable (1-5) is provided with: a core (10, 20, 30, 40, 50) including a plurality of signal lines (11-14, 21-23, 31-34, 41, 42, 51-54); a shield tape layer (17, 26, 37, 46, 56) that is configured of a shield tape (170, 260, 370, 460, 560) wound around the outer periphery of the core (10, 20, 30, 40, 50); a braided wire (18, 27, 38, 47, 57) provided on the outer periphery of the shield tape layer (17, 26, 37, 46, 56); and a sheath (19, 28, 39, 48, 58) provided on the outer periphery of the braided wire (18, 27, 38, 47, 57), wherein the braided wire (18, 27, 38, 47, 57) is formed by braiding a plurality of first wires (181) spirally wound in one direction and a plurality of second wires (182) intersecting the plurality of first wires (181) and spirally wound in the opposite direction in a lattice shape, and the spiral winding pitch of the plurality of first wires (181) and the plurality of second wires (182) is 15mm or more and less than 40mm and 4 times or more and 6 times or less the outer diameter of the shield tape layer (17, 26, 37, 46, 56).

[2]According to [1] above]The cables (1-5) are characterized in that the spiral winding pitch (P) of the first wires (181) and the second wires (182) ₁ ) Is less than 5 times the outer diameter of the shielding tape layers (17, 26, 37, 46, 56).

[3] The cables (1 to 5) according to the above [1] or [2], wherein the inclination (wire inclination angle θ) of the plurality of first wires (181) and the plurality of second wires (182) with respect to the cable longitudinal direction is 30 ° or more and 50 ° or less.

[4]According to [1] above]To [3]]The cable (1-5) according to any one of claims, characterized in that the spiral winding pitch (P) of the plurality of first wires (181) and the plurality of second wires (182) ₁ ) Is less than 25 mm.

[5] The cable (1-5) according to any one of the above [1] to [4], wherein the outer diameters (wire diameter d) of the plurality of first wires (181) and the plurality of second wires (182) are 0.12mm or more.

[6] The cable (1-5) according to any one of the above [1] to [5], wherein the braid density of the braided wire (18, 27, 38, 47, 57) is 85% or more.

[7]According to [1] above]To [6]]The cable (1-5) according to any one of the preceding claims, characterized in that the twist pitch (P) of the plurality of signal lines (11-14, 21-23, 31-34, 41, 42, 51-54) ₂ ) Is larger than the spiral winding pitch (P) of the first wires (181) and the second wires (182) ₁ )。

[8] The cable (1-5) according to any one of the above [1] to [7], wherein the core (10, 20, 30, 40, 50) has a press winding tape (16, 25, 36, 45, 55) wound around the outer periphery of the plurality of signal wires (11-14, 21-23, 31-34, 41, 42, 51-54), and a winding pitch of the shielding tape (170, 260, 370, 460, 560) is the same as or larger than a winding pitch of the press winding tape (16, 25, 36, 45, 55).

The embodiments of the present invention have been described above, but the above embodiments do not limit the invention according to the claims. Note that all combinations of the features described in the embodiments are not necessarily essential to means for solving the problems of the invention. The present invention can be implemented by appropriately modifying the present invention within a range not departing from the gist thereof. For example, in the above-described embodiment, the case where the pressing wound tape 16 is disposed on the outer periphery of the first to fourth signal lines 11 to 14 has been described, but the pressing wound tape 16 may be omitted. In addition, the sandwiching rope 15 may be omitted. The core 10 may include a power line for supplying the operation power to the supply target. The use of the cables 1 to 5 is not limited to vehicles, and may be applied to industrial machines, for example.

Claims

1. A cable, comprising:

a core including a plurality of signal lines;

a shield band layer formed of a shield band wound around an outer periphery of the core;

a braided wire provided on the outer periphery of the shield tape layer; and

a sheath provided on the outer periphery of the braided wire,

the braided wire is formed by braiding a plurality of first wires spirally wound in one direction and a plurality of second wires intersecting the plurality of first wires and spirally wound in the opposite direction in a lattice shape,

the first and second wires have a spiral winding pitch of 15mm or more and less than 40mm, and 4 to 6 times the outer diameter of the shield tape layer.

2. The cable of claim 1, wherein the cable comprises a plurality of conductors,

the spiral winding pitch of the plurality of first wires and the plurality of second wires is 5 times or less the outer diameter of the shield tape layer.

3. The cable according to claim 1 or 2, wherein,

the inclination of the plurality of first wires to the cable length direction is 30 DEG to 50 DEG.

4. A cable according to any one of claims 1 to 3, wherein,

the spiral winding pitch of the plurality of first wires and the plurality of second wires is 25mm or less.

5. The cable according to any one of claims 1 to 4, wherein,

the outer diameters of the first wires and the second wires are more than 0.12mm.

6. The cable according to any one of claims 1 to 5, wherein,

the braiding density of the braided wire is more than 85%.

7. The cable according to any one of claims 1 to 6, wherein,

the twisting pitch of the plurality of signal wires is greater than the spiral winding pitch of the plurality of first wires and the plurality of second wires.

8. The cable according to any one of claims 1 to 7, wherein,

the core has a press winding tape wound around the outer periphery of the plurality of signal wires,

the winding pitch of the shielding tape is the same as or larger than the winding pitch of the pressing wound tape.