A rotatable connector device includes a stationary member, a rotatable member rotatably attached thereto, and a flat cable housed in an annular space between the stationary and rotatable members. One end of the flat cable is connected to a stationary-side connector fixed to the stationary member, and another end of the flat cable is connected to a rotating-side connector fixed to the rotatable member. The flat cable includes a folded-back portion bent and folded back at a middle section in a longitudinal direction thereof. The flat cable includes a predetermined number of conductor/conductors each comprising a copper alloy and wound up or rewound with bending kept at the folded-back portion. Each conductor satisfies Y≥14.175X2−249.35X+1406.9 for a bending radius of 4 to 8 mm, where X denotes bending radius, and Y denotes 0.2% yield stress, and has an electrical conductivity of 50% IACS or greater.


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    Title :

    Rotatable connector device


    Contributors:

    Publication date :

    2020-02-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H01R Elektrisch leitende Verbindungen , ELECTRICALLY-CONDUCTIVE CONNECTIONS / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / C22C Legierungen , ALLOYS / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen / H01B CABLES , Kabel / H05K PRINTED CIRCUITS , Gedruckte Schaltungen



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