The integrated bicycle lower pipe joint comprises a lower pipe, one end of the lower pipe is fixedly connected with a joint, and a first step and a second step are arranged at the end, in butt joint with the lower pipe, of the joint. The invention discloses an integrated bicycle lower pipe joint and a manufacturing method thereof. The lower pipe and the joint are consistent in shape after being welded; the welding bead is ground to form an integral effect; no difference exists between steps and shapes; the bicycle lower pipe and joint integrated forming machining method is stable in quality. Therefore, the lower pipe joint is integrally molded; the problems of welding beads and unsmooth appearance during bicycle manufacturing are reduced, two parts can be obviously seen as weldments, the manufacturing cost is reduced, the appearance quality is improved, the unstable quality and the unstable appearance due to welding bead welding are avoided, the production cost is reduced, and the practicability is very high.

    本发明公开了一种一体式自行车下管接头,包括下管,所述下管的一端固定连接有接头,所述接头与下管对接的一端设置有第一台阶和第二台阶。该一体式自行车下管接头及其制作方法,下管与接头焊接后造型一致,且焊道处磨平成一整体效果,无台阶与造型有差异等问题,是一种品质稳定的自行车下管与接头一体成型加工方法,从而形成下管接头一体成造型,本发明减少了自行车制造过因焊道问题,外观不顺畅,明显可以看出两零件为焊接件,降低了制作成本,改善外观品质,避免了因焊接焊道问题接配合不稳定质量及外观的不稳定,降低了生产成本,具有很强的实用性。


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    Title :

    Integrated bicycle lower pipe joint and manufacturing method thereof


    Additional title:

    一种一体式自行车下管接头及其制作方法


    Contributors:
    YU GUO (author) / GUO SHIXING (author)

    Publication date :

    2020-08-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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