Coaxial cables, multicore cables, and electronic apparatuses using such cables
First Claim
Patent Images
1. A coaxial element wire, comprising:
- a center conductor;
a non-electrically conductive insulation layer, provided around the center conductor, and in contact therewith having a thickness of 0.03 mm or more and 0.15 mm or less at a portion of the insulation layer where the thickness is smallest; and
an outer conductor, consisting of at least one ribbon-shaped conductor of a virtually rectangular cross-section with its four corners smoothed, said at least one ribbon-shaped conductor made by pressing a copper or copper alloy round wire into a flat form without annealing after pressing,said at least one ribbon-shaped conductor being helically wrapped around said insulation layer with one long side thereof facing said insulation layer, anda wrapping angle of said at least one ribbon-shaped conductor with respect to an axis of said coaxial element wire is more than 45 degrees.
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Abstract
A coaxial element wire includes a center conductor, an insulation layer, and an outer conductor. The insulation layer is provided around the center conductor, and it has a thickness of 0.15 mm or less. The outer conductor is a ribbon-shaped conductor obtained by pressing a copper or copper alloy round wire into a flat form, without annealing after pressing. This ribbon-shaped conductor is spirally wrapped around the insulation layer to thereby form the coaxial element wire. The coaxial element wire may be covered with a protective jacket, and plural coaxial wire elements may be joined into a common jacket to form a multicore cable.
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Citations
18 Claims
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1. A coaxial element wire, comprising:
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a center conductor; a non-electrically conductive insulation layer, provided around the center conductor, and in contact therewith having a thickness of 0.03 mm or more and 0.15 mm or less at a portion of the insulation layer where the thickness is smallest; and an outer conductor, consisting of at least one ribbon-shaped conductor of a virtually rectangular cross-section with its four corners smoothed, said at least one ribbon-shaped conductor made by pressing a copper or copper alloy round wire into a flat form without annealing after pressing, said at least one ribbon-shaped conductor being helically wrapped around said insulation layer with one long side thereof facing said insulation layer, and a wrapping angle of said at least one ribbon-shaped conductor with respect to an axis of said coaxial element wire is more than 45 degrees. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of making a coaxial element wire, comprising:
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providing a center conductor; providing a non-electrically conductive insulation layer around the center conductor and in contact therewith, wherein the insulation layer has a thickness of 0.03 mm or more and 0.15 mm or less at a portion of the insulation layer where the thickness is smallest; providing an outer conductor consisting of at least one ribbon-shaped conductor formed by pressing a copper or copper alloy round wire into a flat form, without annealing after pressing; and spirally wrapping said at least one ribbon-shaped conductor around said insulation layer with one long side thereof facing said insulation layer to thereby provide a coaxial element wire, wherein a wrapping angle of said at least one ribbon-shaped conductor with respect to an axis of said coaxial element wire is more than 45 degrees. - View Dependent Claims (12, 13, 14, 15)
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16. A coaxial element wire, comprising:
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a center conductor; a non-electrically conductive insulation layer, provided around said center conductor, and in contact therewith having a thickness of 0.03 mm or more and 0.15 mm or less at a portion of said insulation layer where the thickness is smallest; an outer conductor consisting of at least one ribbon-shaped conductor of a virtually rectangular cross-section with its four corners smoothed; and said at least one ribbon-shaped conductor having a thickness of 0.01 mm or more and 0.03 mm or less, being made by pressing a copper or copper alloy round wire into a flat form without annealing after pressing, being helically wrapped around said insulation layer with one long side thereof facing said insulation layer, and having a wrapping angle with respect to said coaxial element wire at more than 45 degrees.
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17. A coaxial element wire, comprising:
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a center conductor; a non-electrically conductive insulation layer, provided around said center conductor, and in contact therewith having a thickness of 0.03 mm or more and 0.15 mm or less at a portion of said insulation layer where the thickness is smallest; and an outer conductor consisting of at least one ribbon-shaped conductor of a virtually rectangular cross-section with its four corners smoothed, said at least one ribbon-shaped conductor being helically wrapped around said insulation layer with one long side thereof facing said insulation layer, and having a wrapping angle with respect to said coaxial element wire at more than 45 degrees.
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18. A method of making a multicore cable, comprising:
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providing a center conductor; providing a non-electrically conductive insulation layer around said center conductor and in contact therewith, wherein said insulation layer has a thickness of 0.03 mm or more and 0.15 mm or less at a portion of said insulation layer where the thickness is smallest; providing an outer conductor consisting of at least one ribbon-shaped conductor formed by pressing a copper or copper alloy round wire into a flat form, without annealing after pressing; spirally wrapping said at least one ribbon-shaped conductor around said insulation layer with one long side thereof facing said insulation layer to thereby provide a coaxial element wire, wherein a wrapping angle of said at least one ribbon-shaped conductor with respect to an axis of said coaxial element wire is more than 45 degrees; and assembling a plurality of said coaxial element wires in a common jacket.
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Specification