The invention relates to an electric back-door opening and closing mechanism of an automobile. The electric back-door opening and closing mechanism comprises an outer tube and an inner tube, wherein a sliding connector for being connected with a back door is fixed at one end of the inner tube, and the other end of the inner tube extends into the outer tube to be in sliding fit with the outer tube; a driving motor is fixed in the outer tube; the driving motor is connected with a threaded rod, and the threaded rod is driven by the driving motor to rotate; a guide nut is in threaded fit to the screw rod; the inner tube is driven to axially slide in the outer tube through the guide nut; a spring sleeves the guide nut; a fixed connector for being connected with a roof drip channel of an automobile body is fixed on the outer tube; a sliding friction gap between the outer tube and the inner tube is determined by the using efficiency of a motor assembly and the manual operation force of the motor assembly. The motor assembly of the electric back-door opening and closing mechanism of the automobile is the highest in using efficiency, the motor is long in service life, and is reasonable in manual operation force.


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    Title :

    Electric back-door opening and closing mechanism of automobile


    Contributors:
    ZHAO DONGSHENG (author) / DU QIZHONG (author)

    Publication date :

    2015-10-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge



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