The invention relates to an integrally-formed bicycle frame which comprises a head pipe (1), a vertical pipe (2), a horizontal pipe (3), an upper beam (4), a lower beam (5), a vertical fork (6) and ahorizontal fork (7) in integrated casting connection, the cross section of theupper beam (4) is T-shaped, theupper beam (4) comprises a beam plate and a vertical rib plate, thelower beam (5) is hollowtubular, an opening is formed in the lower end surface of the lower beam (5), the horizontal pipe (3) is arranged on the lower side face of the lower end of the lower beam (5), the lower end of the vertical pipe (2) is connected with the upper side face of the lower end of the lower beam (5), the middle of the vertical pipe (2) is connected with the upper beam (4), and the upper end of the vertical pipe (2) extends upwards to the outside above of the upper beam (4). According to the invention, the structure is simple and novel, the mechanical strength is high, the service life is long, the using safety is high, the structure is of an integral streamline shape, the appearance is beautiful, the frame is realized through once die-cast molding, and the production and processing efficiency ishigh.

    本发明涉及一种一体成型式自行车车架,包括头管(1)、立管(2)、平管(3)、上梁(4)、下梁(5)、立叉(6)和平叉(7),头管(1)、立管(2)、平管(3)、上梁(4)、下梁(5)、立叉(6)和平叉(7)为一体压铸成型连接,上梁(4)的横截面呈“T”字形状,其包括横梁板和竖筋板,下梁(5)为空心管状,其下端面设有开口,平管(3)设置在下梁(5)的下端下侧面,立管(2)的下端与下梁(5)的下端上侧面连接,立管(2)的中部与上梁(4)连接,立管(2)的上端向上延伸至上梁(4)的上方外面,本发明结构简单新颖,机械强度高,使用寿命长,使用安全性高,整体流线形状,外观美观,一次性压铸成型,生产加工效率高。


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    Title :

    Integrally-formed bicycle frame


    Additional title:

    一种一体成型式自行车车架


    Contributors:

    Publication date :

    2021-04-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62K Fahrräder , CYCLES



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