Patent ID: 11887759
Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC H

Claim 14:
15. An insulated electric wire comprising:
a conductor in which a plurality of elemental wires made of a metal material are twisted together; and
an insulation covering that covers an outer circumference of the conductor;
wherein the insulated electric wire comprises:
an exposed portion in which the insulation covering is removed from the outer circumference of the conductor;
a covered portion in which the insulation covering covers the outer circumference of the conductor, the exposed portion and the covered portion being provided adjacent to each other in a longitudinal axis direction of the insulated electric wire; and
a water-stopping portion in which gaps between the plurality of elemental wires in the exposed portion are filled with a water-stopping agent, and
in an area enclosed by a surface of the water-stopping agent, surfaces of the plurality of elemental wires are in contact with only the water-stopping agent or another elemental wire,
elemental wires located in an outer circumferential portion of the conductor has a similar circular shape as elemental wires located inward of the outer circumferential portion of the conductor in a cross section that is taken perpendicular to a longitudinal axis direction of the plurality of elemental wires, and
in a cross section of the water-stopping portion that is taken perpendicular to the longitudinal axis direction of the insulated electric wire, the elemental wires located in the outer circumferential portion of the conductor has a more flattened shape than the elemental wires located inward of the outer circumferential portion of the conductor.