Abstract: A method for connecting a plurality of insulated wires to each other is provided. Each of the insulated wires has a conductor portion and an insulating coating covering the conductor portion. The insulating coating is made of an insulating material. The method includes stripping the insulating coating of each of the insulated wires to expose the conductor portion such that the insulating coating is removed from a section of the insulated wire along a direction in which the insulated wire extends and at a location away from an end portion of the insulated wire, and connecting the conductor portions of the insulated wires. The connecting includes crimping a crimp joint terminal onto the exposed conductor portions to join the exposed conductor portions, and after the crimping, welding the conductor portions by applying pressure and electric current or ultrasonic vibration to the crimp joint terminal.

Abstract: To provide a method of manufacturing a cable when the cable is obtained by coating a core wire and a method of manufacturing a composite electric wire. To coat an outer circumferential side of a core wire or a plurality of bundled core wires with a coating portion made of an insulating polymeric material, first any exposure target region of the core wire is held below a melting temperature of the insulating polymeric material and a coating target region of the core wire positioned outside the exposure target region is heated to the melting temperature of a powder material (insulating polymeric material in a powder state). Then, the coating portion is formed by immersing the core wire of the coating target region having been heated in the powder material inside an immersion container to allow the insulating polymeric material to adhere to the core wire of the coating target region.

Abstract: To facilitate the protection of an exposed portion of a core wire of a cable and enable the acquisition of desired electric wire characteristics A coating portion at an end of a composite electric wire is peeled to expose a core wire and the exposed core wires are bundled and welded to form a composite exposed portion having a welded portion. The composite exposed portion is heated and then immersed in a powder material with which an immersion portion of an immersion container is filled and the powder material is melted to allow a melt thereof to adhere to the composite exposed portion to form a protective member covering the composite exposed portion. Heat-up of the composite exposed portion is set to a melting temperature of the powder material or higher.

Abstract: A method for connecting a plurality of insulated wires to each other is provided. Each of the insulated wires has a conductor portion and an insulating coating covering the conductor portion. The insulating coating is made of an insulating material. The method includes stripping the insulating coating of each of the insulated wires to expose the conductor portion such that the insulating coating is removed from a section of the insulated wire along a direction in which the insulated wire extends and at a location away from an end portion of the insulated wire, and connecting the conductor portions of the insulated wires. The connecting includes crimping a crimp joint terminal onto the exposed conductor portions to join the exposed conductor portions, and after the crimping, welding the conductor portions by applying pressure and electric current or ultrasonic vibration to the crimp joint terminal.