| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric wire free in expanding and contracting which has not only flexibility against bending, but also high durability against expansion or twisting. SOLUTION: At least one of a first core wires 11 free in expanding and contracting, and a plurality of a second core wires 12 arrange around the first core wires with conductive wires 12b arranged spirally around the outer periphery of core materials 12a free in expanding and contracting are provided, and also, the first and the second core wires are coated with a braided or twilled coating body 13. |
