Disclosed is a frame body for a bicycle which is able to provide higher strength and reduce the weight of the body frame in such a way to use a carbon material even when the outer diameters of a top tube and a bottom tube are thinner same as the thickness of the tubes forming a classical type body frame. In the body frame for a bicycle, at least one tube among the top tube, the bottom tube and the seat tube is made of a carbon material outer tube of a pipe shape the diameter of which is same from one end to the other end, and an inner tube made of a carbon material in a tubular shape and having a cross section area smaller than the cross section area of the outer tube is fixedly installed in the inside of a predetermined section of the outer tube.


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    Title :

    BODY FRAME FOR BICYCLE


    Contributors:
    PARK DONG WON (author) / CHOI UNG JE (author) / YI CHANG HO (author)

    Publication date :

    2016-01-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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    BODY FRAME FOR BICYCLE

    PARK DONG WON / CHOI UNG JE / YI CHANG HO | European Patent Office | 2015

    Free access