Shielded cable

Abstract

To provide a shield cable capable of being reduced in a diameter, having an outer edge shape of a cross section, close to a circular shape, and having high flexibility, and to provide a manufacturing method of the same.SOLUTION: A shield cable 1 comprises: twisted pair wires 2 obtained by twisting first and second core wires 21, 22 in which electric conductors 211, 221 are coated with insulators 212, 222; and a shield layer 3 obtained by spirally and laterally winding a plurality of shield element wires 31. The plurality of shield element wires 31 are brought into contact with an end part at an outer peripheral side in a radial direction in the first and second core wires 21, 22, and laterally wound. In a laterally winding direction of the plurality of element wires 31, an angle from the contact of the arbitrary one shield element wire 31 in the plurality of shield element wires 31 with an apex at an external diameter side of one of the first and second core wires 21, 22 to the contact with the other core wire is 63.4° or less.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention is a shielded cable. To Regarding. [Background technology]

[0002] Conventionally, shielded cables having a twisted pair wire formed by twisting together a pair of core wires whose conductors are covered with an insulator, and a shielding layer provided on the outer periphery of the twisted pair wire, have been used for signal transmission, etc. (see, for example, Patent Documents 1-3).

[0003] The shielded twisted electric wire described in Patent Document 1 is used as a communication cable for an in-vehicle LAN, for example, and is configured by twisting together multiple insulated core wires, each of which has an outer conductor covered with an insulator, and then covering the outer conductor with a shield conductor, which is then covered with an outer sheath. The shield conductor is made of a braid or metal foil made of copper or aluminum.

[0004] The low-voltage differential signal transmission cable of Patent Document 2 has improved bending resistance compared to the cable described in Patent Document 1, and includes a twisted pair cable formed by twisting a pair of core wires, a fixing layer formed around the twisted pair cable, a horizontally wound shield formed by horizontally winding multiple shield wires around the fixing layer, and a sheath formed around the horizontally wound shield. The fixing layer is formed by solidly extruding a thermoplastic resin around the twisted pair cable, and has a circular cross section from the viewpoint of effectively dispersing stress applied during movement such as bending, twisting, or U-shaped sliding.

[0005] The bend-resistant cable of Patent Document 3 is used as an automotive cable or a robot cable, and has multiple shield wires wound transversely so as to be in direct contact with a twisted pair wire formed by twisting together a pair of flexible insulated core wires. The outer periphery of the multiple shield wires is covered with a sheath. The twisting direction and twisting pitch of the multiple shield wires are the same as those of the twisted pair wires. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-130347 [Patent Document 2] Japanese Patent Application Publication No. 2017-142958 [Patent Document 3] Japanese Patent Application Laid-Open No. 2007-299562 Summary of the Invention [Problem to be solved by the invention]

[0007] Recent advances in medical technology have led to the insertion of various sensors along with shielded cables into the blood vessels of the human body to monitor conditions inside the body. Such medical catheter cables are required to be extremely thin, with a diameter of, for example, 0.25 mm or less. Furthermore, to prevent the cables from getting caught in curved parts of blood vessels, which makes insertion difficult, the outer edge shape of the cross section must be nearly circular, and they must also be highly flexible.

[0008] As such, it is difficult to realize a shielded cable that is extremely thin, has a nearly circular cross-sectional outer edge shape, and is highly flexible by simply reducing the diameter using the structure of the shielded cables described in Patent Documents 1-3, for example, as is. Therefore, there was a need to develop a shielded cable that meets these requirements to a high level.

[0009] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a shielded cable that can be made thinner, has a cross-sectional outer edge shape that is close to a circle, and has high flexibility, and a method for manufacturing the same. [Means for solving the problem]

[0010] In order to solve the above-mentioned problems, the present invention provides a shielded cable comprising a twisted pair wire formed by twisting together a pair of core wires whose conductors are covered with an insulator, and a shielding layer formed by spirally wound horizontally of a plurality of shielding element wires, wherein the shielding layer is arranged around the outer periphery of the twisted pair wires in a radial direction perpendicular to a central axis line of the twisted pair wires, wherein the plurality of shielding element wires are wound horizontally in contact with the outer peripheral ends of the pair of core wires in the radial direction, and the angle between when any one of the plurality of shielding element wires contacts the vertex of one of the pair of core wires on the outer diameter side in the radial direction and when it contacts the other core wire in the horizontal winding direction of the plurality of shielding element wires is 63.4° or less.

[0011] Furthermore, in order to solve the above-mentioned problems, the present invention provides a method for manufacturing the above-mentioned shielded cable in which the outer periphery of the shielding layer is covered with a resin sheath, the method comprising: a twisted pair wire forming step of twisting the pair of core wires to form the twisted pair wire; a shielding layer forming step of spirally winding the plurality of shielding element wires horizontally while applying tension to the plurality of shielding element wires so that the plurality of shielding element wires contact the outer periphery end portions of the pair of core wires in the radial direction, to form the shielding layer; and an extrusion molding step of extruding the sheath around the outer periphery of the shielding layer. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a shielded cable that can be made thinner, has a cross-sectional outer edge shape that is close to a circle, and has high flexibility, and a method for manufacturing the same. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a cross-sectional view showing a shielded cable according to a first embodiment of the present invention, taken along a line perpendicular to the longitudinal direction. [Figure 2]1 is a side view showing a state in which a part of the sheath of the shielded cable according to the first embodiment has been removed to expose the shield layer, and further a part of the shield layer has been removed to expose the twisted pair wires. FIG. [Figure 3] 1 is an explanatory diagram schematically illustrating first and second core wires and one shield wire in a shielded cable according to a first embodiment, viewed from the axial direction. FIG. [Figure 4] 3 is a geometric diagram for explaining a method for calculating an angle θ in the shielded cable according to the first embodiment. FIG. [Figure 5] FIG. 1 is a cross-sectional view showing a shielded cable according to a comparative example, taken along a line perpendicular to the longitudinal direction. [Figure 6] 10 is a side view showing a state in which a part of the sheath of a shielded cable according to a second embodiment has been removed to expose the shield layer, and further a part of the shield layer has been removed to expose the twisted pair wires. FIG. [Figure 7] 10 is an explanatory diagram schematically illustrating first and second core wires and one shield wire in a shielded cable according to a second embodiment, viewed from the axial direction. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] [First embodiment] 1 is a cross-sectional view taken perpendicular to the longitudinal direction of a shielded cable according to a first embodiment of the present invention. This shielded cable 1 includes twisted pair wires 2, a shielding layer 3, and a resin sheath 4 that covers the outer periphery of the shielding layer 3.

[0015] The shielded cable 1 is inserted, for example, into a blood vessel of the human body and transmits a differential signal via the twisted pair wires 2. A sensor such as a pressure sensor or a temperature sensor is connected to one end of the shielded cable 1, and a display unit is connected to the other end of the shielded cable 1, for example, which amplifies the signal transmitted by the twisted pair wires 2 and displays the measurement results from the sensor.

[0016] The twisted pair wire 2 is formed by twisting a pair of core wires 21, 22 around a central twist axis C. The central twist axis C coincides with the central axis of the shielded cable 1, and when the shielded cable 1 is arranged linearly, the central twist axis C becomes a straight line. The pair of core wires 21, 22 each have a conductor 211, 221 covered with an insulating coating 212, 222 made of an insulator. The conductors 211, 221 are solid wires with a circular cross section made of a metal with good conductivity, such as copper or a copper alloy. The insulating coatings 212, 222 are made of a resin with high electrical insulation, such as cross-linked polyethylene. The conductors 211, 221 may also be a stranded wire made of a plurality of metal wires twisted together.

[0017] The diameter D1 of the shielded cable 1 is 0.25 mm or less, and the diameter D 21 ,D 22 is 0.05 mm or less (one-fifth or less of the diameter D1 of the shielded cable 1). More specifically, the diameter D 21 ,D 22 It is desirable that the conductor diameter be in the range of 46 to 52 AWG (American Wire Gauge). The conductor diameter corresponding to 46 AWG is 0.040 mm, and the conductor diameter corresponding to 52 AWG is 0.020 mm.

[0018] Hereinafter, one of the pair of core wires 21, 22 will be referred to as the first core wire 21, and the other will be referred to as the second core wire 22. Furthermore, the direction parallel to the twisting central axis C will be referred to as the cable axial direction, and the direction perpendicular to the twisting central axis C will be referred to as the cable radial direction. Furthermore, the direction perpendicular to the cable axial direction and the cable radial direction around the twisting central axis C will be referred to as the cable circumferential direction.

[0019] The shield layer 3 is configured by spirally winding a plurality of shield wires 31, and is arranged on the outer periphery of the twisted pair wire 2 in the cable radial direction. Each shield wire 31 has a diameter D 21 ,D 22 Diameter D is smaller than 31It consists of a single wire with a circular cross section and a diameter D 31 is, for example, 0.02 mm. In this embodiment, 28 shield wires 31 are arranged side by side in the circumferential direction of the cable so as to be in contact with one another. The multiple shield wires 31 are wound horizontally in contact with the ends of the first and second core wires 21, 22 on the outer circumferential side in the cable radial direction. The area around the twisted pair wires 2 inside the shield layer 3 is made to be a space without any inclusions.

[0020] 2 is a side view of the shielded cable 1, showing a state in which a portion of the sheath 4 has been removed to expose the shielding layer 3, and a further portion of the shielding layer 3 has been removed to expose the twisted pair wires 2. In this embodiment, the twisting direction of the first and second core wires 21, 22 is opposite to the transverse winding direction of the multiple shielding element wires 31. In other words, when the shielded cable 1 is viewed from one end in the longitudinal direction, if the first and second core wires 21, 22 are twisted clockwise toward the other end in the longitudinal direction, the multiple shielding element wires 31 are transversely wound counterclockwise.

[0021] 2, the twist pitch P3 of the multiple shield wires 31 is 1.42 times or more the twist pitch P2 of the first and second core wires 21, 22. Here, the twist pitch P3 of the multiple shield wires 31 is the distance in the cable axis direction that an arbitrary one of the multiple shield wires 31 moves around the twisted pair wire 2 in the cable circumferential direction. Furthermore, the twist pitch P2 of the first and second core wires 21, 22 is the distance in the cable axis direction that the first and second core wires 21, 22 move around the twisted central axis C in the cable circumferential direction.

[0022] In this embodiment, the twist pitch P3 of the multiple shield wires 31 is 1.42 times or more the twist pitch P2 of the first and second core wires 21, 22, so that in the transverse winding direction of the multiple shield wires 31 (cable circumferential direction), the angle from when any one of the multiple shield wires 31 touches the vertex on the outer diameter side of the first core wire 21 in the cable radial direction to when it touches the second core wire 22 is 63.4° or less. Furthermore, because this angle is 63.4° or less, the shape of the shield layer 3 when viewed in the cable axial direction is close to circular. Next, a method for calculating this angle, etc. will be described in detail with reference to FIGS. 3 and 4.

[0023] Fig. 3 is an explanatory diagram schematically showing the first and second core wires 21, 22 and one shield wire 31 as viewed in the cable axial direction. In Fig. 3, arrows A1 and A2 indicate the twisting direction of the first and second core wires 21, 22, and arrow A3 indicates the transverse winding direction of the shield wire 31. Also in Fig. 3, contact point CP1 indicates the vertex on the outer diameter side of the first core wire 21 in the cable radial direction with which the shield wire 31 contacts, and contact point CP2 indicates the contact point on the outer surface of the second core wire 22 with which the shield wire 31 contacts as the winding progresses from contact point CP1 in the direction of arrow A3. In Fig. 3, the angle θ formed by the line connecting contact point CP1 to the central axis C and the line connecting contact point CP2 to the central axis C is 63.4°.

[0024] As the winding of the shield wire 31 progresses from the contact point CP1 to the contact point CP2, the first and second core wires 21, 22 rotate by 90° in the cable circumferential direction around the twisting central axis C, and the shield wire 31 is prevented from sinking toward the inner diameter in the cable radial direction by the second core wire 22. In other words, if the angle θ of the transverse winding direction of the shield wire 31 progressing while the first and second core wires 21, 22 rotate by 90° around the twisting central axis C is 63.4° or less, the shield wire 31 is prevented from sinking toward the inner diameter in the cable radial direction between the first core wire 21 and the second core wire 22, and the shape of the shield layer 3 viewed in the cable axial direction becomes close to a circle to an extent that there is substantially no problem in use.

[0025] Fig. 4 is a geometric diagram for explaining a method for calculating the angle θ. The angle φ in Fig. 4 is an angle whose sum with the angle θ is 90° (φ = 90° - θ). When the outer diameter of the first and second core wires 21 and 22 is 2r, the length L of the hypotenuse H of the right-angled triangle 20 shown in gray shading is expressed by the following formula (1). TIFF0007735729000001.tif1371As a result, sinφ is expressed by the following equation (2). TIFF0007735729000002.tif1591Therefore, according to the following equation (3), φ=26.6° and θ=63.4° are obtained. TIFF0007735729000003.tif1477

[0026] When θ=63.4°, the twist pitch P3 of the multiple shield wires 31 is 1.42 times the twist pitch P2 of the first and second core wires 21, 22 according to the following formula (4). TIFF0007735729000004.tif1577

[0027] It is desirable that the twist pitch P3 of the multiple shield wires 31 be 20 times or less the twist pitch P2 of the first and second core wires 21, 22. If the twist pitch P3 of the multiple shield wires 31 exceeds 20 times the twist pitch P2 of the first and second core wires 21, 22, the multiple shield wires 31 will become nearly parallel to the longitudinal direction of the shielded cable 1, reducing flexibility. It is also desirable that the twist pitch P3 of the multiple shield wires 31 be 10 mm or less.

[0028] (Manufacturing method of shielded cable 1) Next, a description will be given of a manufacturing method of the shielded cable 1. The manufacturing method of the shielded cable 1 includes a twisted pair wire forming step of twisting the first and second core wires 21, 22 together to form the twisted pair wire 2, a shield layer forming step of spirally winding the multiple shield element wires 31 horizontally while applying tension to the multiple shield element wires 31 so as to contact the outer peripheral ends of the first and second core wires 21, 22 in the cable radial direction to form the shield layer 3, and an extrusion molding step of extruding the sheath 4 around the outer periphery of the shield layer.

[0029] In the extrusion molding process, the sheath 4 is formed by tube extrusion, also known as draw-down extrusion. In this tube extrusion, a tubular resin material that has been semi-solidified by heat is extruded onto the outer periphery of the twisted pair wires 2 and shielding layer 3 that pass through a core bar called a nipple, and the resin material is then drawn down to adhere to the outer periphery of the shielding layer 3. As a result, a semicircular groove that is transferred to the shape of the multiple shielding wires 31 is formed in a spiral pattern on the inner circumferential surface of the sheath 4.

[0030] Furthermore, by forming the sheath 4 by tube extrusion, unlike solid extrusion in which the object to be coated is directly passed through molten resin material under extrusion pressure, it is possible to prevent the multiple shield wires 31 from sinking significantly inward in the cable diameter direction due to the pressure of the molten resin, or to prevent the molten resin from seeping into the twisted pair wires 2 through gaps between the multiple shield wires 31.

[0031] (Comparative Example) Next, a shielded cable 10 according to a comparative example will be described with reference to Fig. 5. Fig. 5 is a cross-sectional view showing the shielded cable 10 according to the comparative example in a cross section perpendicular to the longitudinal direction.

[0032] Like the shielded cable 1 of the first embodiment, this shielded cable 10 comprises a twisted pair wire 2 formed by twisting together first and second core wires 21, 22, a shielding layer 3 formed by spirally wound multiple shielding wires 31, and a resin sheath 4 covering the outer periphery of the shielding layer 3. However, it differs from the shielded cable 1 of the first embodiment in that the twisted pair wires 2 are covered by a tape layer 5 formed by spirally wounding a strip-shaped bind tape 51 so that a portion of the tape layer 5 overlaps the twisted pair wires 2, and the shielding layer 3 is provided on the outer periphery of this tape layer 5.

[0033] Diameter D of the conductors 211 and 221 of the first and second core wires 21 and 22 21 ,D 22 and the diameter D of the shield wire 31 31 The thickness T of the tape layer 5 is, for example, 0.01 mm. Therefore, the diameter D of the shielded cable 10 is 10 is larger than the diameter D1 of the shielded cable 1 by twice the thickness T of the tape layer 5 (for example, 0.02 mm). In other words, since the shielded cable 1 according to the first embodiment does not have the tape layer 5, it is possible to reduce the diameter by twice the thickness T of the tape layer 5.

[0034] (Functions and Effects of the First Embodiment) According to the present embodiment described above, a bind tape like that shown in the comparative example is not provided, and multiple shield wires 31 are wound transversely in contact with the outer circumferential ends of the first and second core wires 21, 22 in the cable radial direction, thereby enabling a reduction in diameter and achieving high flexibility. Furthermore, the angle between where the shield wires 31 contact the apex on the outer circumferential side of the first core wire 21 in the cable radial direction and where they contact the second core wire 22 is 63.4° or less, which allows the shape of the shield layer 3 and the outer edge shape of the shielded cable 1 to approach a circle when viewed in the cable axial direction.

[0035] Furthermore, according to this embodiment, the area around the twisted pair wires 2 inside the shielding layer 3 is a space without any inclusions, which makes it possible to obtain higher flexibility and reduce costs. In other words, the shielded cable 1 according to this embodiment is configured so that the shape of the shielding layer 3 and the outer edge shape of the shielded cable 1 when viewed in the cable axial direction can be made closer to a circle, even without placing any inclusions inside the shielding layer 3.

[0036] [Second embodiment] Next, a shielded cable 11 according to a second embodiment of the present invention will be described with reference to Fig. 6. This shielded cable 11 differs from the shielded cable 1 according to the first embodiment in that the transverse winding direction of the multiple shielding element wires 31 is the same as the twisting direction of the first and second core wires 21, 22.

[0037] The cross section perpendicular to the longitudinal direction of the shielded cable 11 is the same as that of the shielded cable 1 according to the first embodiment shown in Fig. 1. That is, the shielded cable 11 includes a twisted pair wire 2 formed by twisting together first and second core wires 21, 22, a shielding layer 3 formed by spirally wound multiple shielding wires 31, and a resin sheath 4 that covers the outer periphery of the shielding layer 3, and the multiple shielding wires 31 are wound in contact with the outer peripheral ends of the first and second core wires 21, 22 in the cable radial direction.

[0038] In addition, in the shielded cable 11, in the horizontal winding direction (circumferential direction of the cable) of the multiple shield wires 31, the angle from when any one of the multiple shield wires 31 contacts the vertex on the outer diameter side of the first core wire 21 in the cable radial direction to when it contacts the second core wire 22 is 63.4° or less, as in the first embodiment.

[0039] 7 is an explanatory diagram schematically illustrating the first and second core wires 21 and 22 and one shield wire 31 when the shielded cable 11 according to the second embodiment is viewed from the cable axial direction. In FIG. 7, arrow A 12indicates the twisting direction of the first and second core wires 21 and 22, and arrow A3 indicates the horizontal winding direction of the shield wire 31.

[0040] In the second embodiment, the horizontal winding direction of the multiple shield wires 31 is the same as the twisting direction of the first and second core wires 21, 22. Therefore, as in the first embodiment, if the angle θ of the horizontal winding direction of the shield wires 31 while the first and second core wires 21, 22 rotate 270° around the twisting central axis C is 63.4° or less, the shield wires 31 are prevented from sinking toward the inner diameter in the cable radial direction between the first core wire 21 and the second core wire 22. When θ = 63.4°, the twist pitch P3 of the multiple shield wires 31 is 4.26 times the twist pitch P2 of the first and second core wires 21, 22, according to the following formula (5). TIFF0007735729000005.tif1575

[0041] That is, in this embodiment, the twist pitch P3 of the multiple shield wires 31 is 4.26 times or more the twist pitch P2 of the first and second core wires 21, 22. This prevents the shield wires 31 from sinking toward the inner diameter in the cable radial direction between the first core wire 21 and the second core wire 22, and the shape of the shield layer 3 viewed in the cable axial direction is close to a circle to the extent that there are no practical problems in use. Note that, as in the first embodiment, the twist pitch P3 of the multiple shield wires 31 is desirably 20 times or less the twist pitch P2 of the first and second core wires 21, 22.

[0042] (Summary of the embodiment) Next, the technical ideas grasped from the first and second embodiments explained above will be described using the reference numerals and symbols in the first and second embodiments. However, the reference numerals in the following description do not limit the components in the claims to the members and symbols specifically shown in the embodiments.

[0043] [1] A shielded cable (1, 11) comprising a twisted pair wire (2) formed by twisting together a pair of core wires (21, 22) whose conductors (211, 221) are covered with insulators (212, 222), and a shield layer (3) formed by spirally winding a plurality of shield element wires (31), the shield layer (3) being disposed around the outer periphery of the twisted pair wires (2) in a radial direction perpendicular to a twisting central axis (C) of the twisted pair wires (2), is a shielded cable (1, 11) that is wound horizontally in contact with the outer peripheral ends of the pair of core wires (21, 22) in the radial direction, and an angle (θ) between an arbitrary one of the plurality of shield wires (31) contacting a vertex (CP1) on the outer radial side of one of the pair of core wires (21 / 22) in the radial direction and contacting the other core wire (22 / 21) in the horizontal winding direction of the plurality of shield wires (31) is 63.4° or less.

[0044] [2] The shielded cable (1) according to the above [1], wherein the twisting direction of the pair of core wires (21, 22) and the twisting direction of the plurality of shield wires (31) are opposite to each other, and the twisting pitch (P3) of the plurality of shield wires (31) is 1.42 times or more the twisting pitch (P2) of the pair of core wires (21, 22).

[0045] [3] The shielded cable (11) according to the above [1], wherein the twisting direction of the pair of core wires (21, 22) and the twisting direction of the plurality of shield wires (31) are the same, and the twisting pitch (P3) of the plurality of shield wires (31) is 4.26 times or more the twisting pitch (P2) of the pair of core wires (21, 22).

[0046] [4] The diameter (D 21 ,D 22 ) is 0.05 mm or less.

[0047] [5] A shielded cable (1, 11) according to any one of [1] to [4] above, wherein the area around the twisted pair wires (2) inside the shielding layer (3) is a space without any intervening objects.

[0048] [6] The shielded cable (1, 11) according to any one of [1] to [5] above, wherein the outer periphery of the shielding layer (3) is covered with a resin sheath (4).

[0049] [7] A method for manufacturing the shielded cable (1, 11) described in [6] above, comprising: a twisted pair wire forming step of twisting the pair of core wires (21, 22) together to form the twisted pair wire (2); a shield layer forming step of spirally winding the plurality of shield element wires (31) horizontally while applying tension to the plurality of shield element wires (31) so as to contact the outer peripheral end portions of the pair of core wires (21, 22) in the radial direction to form the shield layer (3); and an extrusion molding step of extruding the sheath (4) around the outer periphery of the shield layer (3).

[0050] Although the embodiments of the present invention have been described above, the invention according to the claims is not limited to the embodiments described above. It should be noted that not all of the combinations of features described in the embodiments are necessarily essential to the means for solving the problems of the invention. [Explanation of symbols]

[0051] 1,11...Shielded cable 2...Twisted pair wire 21...First core wire 22...Second core wire 211, 221...conductor 212, 222...insulating coating 3...Shield layer 31...Shield wire 4...Sheath

Claims

1. A shielded cable comprising: a twisted pair wire formed by twisting together a pair of core wires, each of which has a conductor covered with an insulator; and a shield layer formed by spirally winding a plurality of shield wires, the shield layer being disposed around the outer periphery of the twisted pair wires in a radial direction perpendicular to a central axis of the twisted pair wires, The twisting direction of the pair of core wires is the same as the twisting direction of the plurality of shield wires, the plurality of shield wires are wound horizontally in contact with the outer peripheral end portions of the pair of core wires in the radial direction, the twist pitch of the plurality of shield wires is 4.26 times or more the twist pitch of the pair of core wires, In the helical winding direction of the plurality of shield wires, an angle between a contact point of any one of the plurality of shield wires with a vertex on the outer diameter side of one of the pair of core wires in the radial direction and a contact point of the other core wire is 63.4° or less. Shielded cable.

2. The diameter of the conductor of the pair of core wires is 0.05 mm or less.

2. The shielded cable according to claim 1.

3. The area around the twisted pair wires inside the shielding layer is a space without any inclusions.

3. The shielded cable according to claim 1 or 2.

4. The outer periphery of the shield layer is covered with a resin sheath.

4. The shielded cable according to claim 1.

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