The invention provides a lower beam pipe of a bicycle, which belongs to the technical field of a bicycle component. The lower beam pipe comprises a lower beam pipe body of a hollow structure, wherein an inner pipe of a hollow structure is concentrically arranged inside the lower beam pipe body, a plurality of reinforcing ribs are uniformly arranged between the inner pipe and the lower beam pipe body, one end of each reinforcing rib is connected to the inner wall of the lower beam pipe body to form an arc surface I, the other end of each reinforcing rib is connected to the outer wall of the inner pipe to form an arc surface II, and the space between the inner pipe and the lower beam pipe body is divided by two adjacent reinforcing ribs into independent spaces. The lower beam pipe body is relatively thinner and high in strength, the breaking situation is unlikely to happen, the bicycle formed by the lower beam pipe is light in weight, relatively light and convenient and easy and comfortable for people to ride.


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    Title :

    Lower beam pipe of bicycle


    Contributors:
    LAN QIJIAN (author)

    Publication date :

    2016-02-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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