Abstract: A coaxial cable and multi-coaxial cable which comprise a low-permittivity insulator having an air layer, whose outer diameters can be reduced, which have excellent flexibility, and which allow productivity to be increased. In the coaxial cable, an electrically conductive filament body for forming an inner conductor, and a filling yarn made of an electrically insulating resin are twisted together, the outside of this twisted body is covered with a tubular insulator so that the insulator makes contact with the electrically conductive filament body and the filling yarn. An outer conductor is provided to the external periphery of the insulator. The multi-coaxial cable has a plurality of the coaxial cables, and the coaxial cables are covered with a common sheath composed of an insulating material.

Abstract: A coaxial cable and multi-coaxial cable which comprise a low-permittivity insulator having an air layer, whose outer diameters can be reduced, which have excellent flexibility, and which allow productivity to be increased. In the coaxial cable, an electrically conductive filament body for forming an inner conductor, and a filling yarn made of an electrically insulating resin are twisted together, the outside of this twisted body is covered with a tubular insulator so that the insulator makes contact with the electrically conductive filament body and the filling yarn. An outer conductor is provided to the external periphery of the insulator. The multi-coaxial cable has a plurality of the coaxial cables, and the coaxial cables are covered with a common sheath composed of an insulating material.

Abstract: A shield cable, in which a winding looseness of a shield layer due to twisting can be decreased and a short-circuit between a shield layer and signal conductor as well as a disconnection of the signal conductor is prevented, and a wiring component and information apparatus having the shield cable are provided. A twisted conductor is covered with an insulator to form an insulated wire with an outer diameter of 0.3 mm or less. This insulated wire is covered with a shield conductor and a sheath so as to form a shield cable. The shield conductor consists of a plurality of shield layers. The first shield layer at an inner most part is formed by winding conductors spirally with a scroll pitch of 7 to 13 mm. One shield cable may contain two insulated wires.

Abstract: A coaxial cable including a core conductor, an insulator arranged around the outer periphery of the core conductor, and an outer conductor arranged around the outer periphery of the insulator coaxially relative to the core conductor, where the electrical conductivity is 20% IACS or more and the Young's modulus of the core conductor is 245 GPa or more. In the present invention, the core conductor is preferably made of a material of one or more kinds selected from the group including tungsten, tungsten alloy, molybdenum, and molybdenum alloy.

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.

Abstract: A shield cable, in which a winding looseness of a shield layer due to twisting can be decreased and a short-circuit between a shield layer and signal conductor as well as a disconnection of the signal conductor is prevented, and a wiring component and information apparatus having the shield cable are provided. A twisted conductor is covered with an insulator to form an insulated wire with an outer diameter of 0.3 mm or less. This insulated wire is covered with a shield conductor and a sheath so as to form a shield cable. The shield conductor consists of a plurality of shield layers. The first shield layer at an inner most part is formed by winding conductors spirally with a scroll pitch of 7 to 13 mm. One shield cable may contain two insulated wires.

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.

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.

Abstract: It is intended to provide a high-speed differential signal cable having a small diameter and high strength. A 4-conductor cable includes four insulation-coated insulated wires (center conductors) bundled together, and a wire mesh and an insulating sheath which cover a periphery thereof, and this cable is characterized in that a conductor size of center conductor wires is thinned so as to satisfy a specified value of attenuation with a cable length of 2.5 m, and also twisted pair wires are replaced by a quad-structure wire, so that the outer diameter is not larger than 3 mm.

Abstract: A method of manufacturing a worked-wire product from a wire (10) including, all coaxially arranged, a core conductor (11), an insulator (12), an outer conductor (13), a metal-evaporated film (14) and a sheath (15) is provided. The method comprises the steps of exposing a portion of the outer conductor (13); holding the exposed portion at two positions by gripping with metallic foils (2a; 2b) and fixtures (3; 4); bending the outer conductor (13) about a bending center (S) until it is circumferentially cut off, the bending being effected while applying ultrasonic vibrations on the outer conductor (13) through the fixture (4); removing the cut off portion of the outer conductor (13) to expose a portion of the insulator (12); and removing the exposed portion of the insulator (12) to expose a portion of the core conductor (11).

Abstract: A cable wire having a core conductor 11, an insulator 12 surrounding the core conductor, and an outer conductor 13 surrounding the insulator 12 is provided. The core conductor 11 is made of a metallic material including copper and silver so as to have a tensile strength of 120 kg/mm2 or more and an electric conductivity of 60 to 90% by IACS. The cable wire 1 is also employed in a coaxial cable 2 and a coaxial cable bundle.

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.

Abstract: An electric wire work is produced in the following manner. That is, a combination of a plurality of coaxial cables are cut to a predetermined length. External conductors are exposed in the vicinity of the ends thereof. The external conductors is fixed at a predetermined pitch with a ground bar. Insulators are exposed outside the ground bar. The plurality of insulated cores are fixed at a predetermined pitch with a plastic tape. Then, the insulator layers are shifted together with the plastic tape at a point between the ground bar and the plastic tape so that core conductors 7 are exposed.