The invention relates to a bicycle gravity assisting device and belongs to a bicycle assisting device. The bicycle gravity assisting device is characterized in that a bracket 2 for installing a saddle support column 1 is square, a vertical strip-shaped opening 3 is formed in the right side portion, a column body of the saddle support column 1 is square and is provided with an L-shaped rack 4, a spring 5 is installed at the bottom of the saddle support column 1, a central shaft 6 is installed on the bracket 2, the right end of the central shaft 6 is provided with a gear 7 and meshed with the rack 4, the other end of central shaft 6 is provided with a first flywheel 8, the first flywheel 8 is connected with a second flywheel 10 through a chain 9, and the second flywheel 10 is installed on the left side of a bicycle rear axle shaft. According to the bicycle gravity assisting device, assistance is provided for advance of a bicycle by means of the weight of a cyclist so that physical power of the physical power is saved.


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    Title :

    Bicycle gravity assisting device


    Contributors:
    DAI HONGBO (author)

    Publication date :

    2015-04-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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