Patent ID: 6674011
Filing Date: 2004-01-06
Classification: D07B,H01B

Abstract:
A stranded conductor to be used for movable member prepared by stranding two or more types of element wires with each other, each type having different mechanical properties from one another, and having a two-layered structure of an inner layer section and an outer layer section, comprising:a first element wire constituting at least the inner layer section having 1.5 times or higher tensile strength than that of a second element wire constituting at least a part of the outer layer section; and the two or more types of element wires being stranded with each other such that a ratio of a strength in a group of inner layer element wires forming the inner layer section to a strength in a group of outer layer element wires forming the outer layer section (a tensile strength in the group of inner layer element wires/a tensile strength in the group of outer layer element wires) comes to be 0.5 to 5; wherein each outer diameter of said first and second element wires is formed to be 0.08 mm or thinner and the outer diameter of each of the element wires constituting said group of the outer layer element wires is made to be smaller than that of each of the element wires constituting said group of the inner layer element wires, and an Ag plating film having 0.6 &mgr;m or thicker film thickness is formed around the outer circumference of said two or more types of element wires including said first and second element wires.