The invention provides a lower beam pipe of a bicycle, and belongs to the technical field of bicycle components and parts. The lower beam pipe comprises a lower beam pipe body in a hollow structure, wherein the cross section of the lower beam pipe body is in a bilaterally symmetric quadrangular structure; the lower beam pipe body comprises an upper pipe surface and a lower pipe surface; a left pipe surface and a right pipe surface are arranged between the upper pipe surface and the lower pipe surface; a reinforcing rib is connected between the upper pipe surface and the lower pipe surface; the lower beam pipe body is divided into two independent spaces by the reinforcing rib; the left pipe surface and the right pipe surface are symmetrically arranged with regard to the reinforcing rib; and among the upper pipe surface, the left pipe surface, the right pipe surface and the lower pipe surface, an arc surface is arranged at an intersection place of every two adjacent pipe surface. The lower beam pipe is attractive in appearance; the lower beam pipe body is thinner and is high in strength, so that no cracking situation happens easily; the manufactured bicycle is light in mass, is relatively light and handy, and is convenient and quick; people can comfortably ride the bicycle with ease; and the application scope is wide.


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    Titel :

    Lower beam pipe of bicycle


    Beteiligte:
    LAN QIJIAN (Autor:in)

    Erscheinungsdatum :

    03.02.2016


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B62K Fahrräder , CYCLES



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