| 摘要 |
An expandable electric wire expandable without needing a strong force (energy loss), capable of carrying a large current for driving power, and having an expandability under a light load and a small electric resistance. The expandable electric wire is characterized in that it has a structure composed of at least a core part, a conductor part, and a cover part, the core part is an elastic cylindrical body made up of an elastic body and an intermediate layer covering the peripheral surface of the elastic body, the conductor part includes a conductor wire which is a strand wire composed of thin wires, the conductor wire is wound and/or braided around the peripheral surface of the elastic cylindrical body, and the cover part is an external covering layer made of an insulator and covering the peripheral surface of the conductor part.
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