The invention discloses an electric car jack which comprises a base, an upper support, a left upper connecting rod, a right upper connecting rod, a left lower connecting rod, a right lower connecting rod, a screw rod, a nut, a motor and a bracket, wherein the upper end of the left upper connecting rod and the upper end of the right upper connecting rod are hinged to the upper support respectively; the lower end of the left lower connecting rod and the lower end of the right lower connecting rod are hinged to the base respectively; the lower end of the left upper connecting rod is hinged to the upper end of the left lower connecting rod; the lower end of the right upper connecting rod is hinged to the upper end of the right lower connecting rod; the motor is arranged on the hinged part of the left upper connecting rod and the left lower connecting rod, and is connected with one end of the screw rod; the nut is arranged at the other end of the screw rod, and is connected with one end of the bracket; the other end of the bracket is connected with the hinged part of the right upper connecting rod and the right lower connecting rod. The bracket and the nut are matched with the screw rod, so that the screw rod is relatively short, an end part of the screw cannot be exposed outside after the jack rises, the screw rod is small in occupied space in the using process, and the risk of bruising on maintenance personnel is reduced; the contact area of the nut and the screw rod is invariable, so that the power required by the jack for rising and falling is invariable.


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    Title :

    Electric car jack


    Contributors:
    YANG HOUYU (author) / LIU DEMING (author)

    Publication date :

    2015-04-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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