The invention provides a method for folding a tricycle frame. The crossbeam of the tricycle frame is divided into three segments, namely a front-segment short crossbeam, a middle-segment short crossbeam and a back-segment short crossbeam. The front-segment short crossbeam is connected with the middle-segment short crossbeam through a hinge. The back-segment short crossbeam is connected with the middle-segment short crossbeam through a hinge. When the back-segment short crossbeam and the front-segment short crossbeam make the middle-segment short crossbeam project and be doubled back for folding and furthermore make the handle rotate through the hinges for approaching the middle-segment short crossbeam, a seat cushion pipe is unlocked and retreats into a seat cushion supporting outer pipe. After the seat cushion supporting outer pipe is unlocked, the seat cushion supporting outer pipe presses downwards so that a seat cushion approaches the middle-segment short crossbeam. A front wheel retreats and enters a portion between two back wheels, thereby achieving a purpose of folding the whole tricycle frame.


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    Title :

    Method for folding tricycle frame


    Contributors:
    SHAO ZAIYU (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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