The invention provides a bicycle lower beam pipe and belongs to the technical field of bicycle parts and components. The bicycle lower beam pipe comprises a lower beam pipe body in a hollow structure. A cross section of the lower beam pipe body is in a hexagonal structure with left symmetric to right; the lower beam pipe body comprises an upper pipe surface and a lower pipe surface; a left upper pipe surface, a left lower pipe surface, a right upper pipe surface and a right lower pipe surface are arranged between the upper pipe surface and the lower pipe surface; the left upper pipe surface and the right upper pipe surface are symmetrically arranged; the left lower pipe surface and the right lower pipe surface are symmetrically arranged; a reinforcing rib is connected between the left lower pipe surface and the right lower pipe surface; the lower beam pipe body is divided into two independent space via the reinforcing rib; for the upper pipe surface, the left upper pipe surface, the left lower pipe surface, the lower pipe surface, the right lower pipe surface and the right upper pipe surface, an intersection part between adjacent two pipe surfaces is provided with an arc-shaped surface. The bicycle lower beam pipe has a beautiful contour; the lower beam pipe body is fine but has great strength, so crack can be avoided; a bicycle can be manufactured with light weight, smartness and convenience; people can drive the bicycle easily and comfortably; and the bicycle lower beam pipe has wide application range.


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    Title :

    Bicycle lower beam pipe


    Contributors:
    LAN QIJIAN (author)

    Publication date :

    2016-01-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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