| 摘要 |
A wire cable for window regulators of automobiles is disclosed. In the wire cable, the core strand has a double-layer twisted strand structure with an F+6+12 element wire structure, and consists of a high-strength synthetic resin filament used as a core element wire (F), six internal element wires primarily twisted around the core element wire to form an internal layer around the core element wire, and twelve external element wires secondarily twisted around the internal layer to form an external layer around the internal layer. Eight external strands, having a single-layer twisted strand structure with a 1+6 element wire structure, are twisted around the core strand to form an 8x7+(F+6+12) element wire structure of the wire cable in cooperation with the core strand. The synthetic resin filament used as the core element wire of the core strand has a diameter slightly larger than that of the internal and external element wires of the core strand. The core strand is also compressed at a compression ratio of 2~10%, thus bringing its element wires into surface contact with each other in place of point contact. In this wire cable, the element wires of the core strand are not likely to be deformed or broken, thus being improved in its fatigue resistance against a repeated bending action, in addition to improving the productivity of the wire cables.
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