The invention relates to the technical field of speed regulation, in particular to an automatic speed change and semi-automatic speed change system of a bicycle, which can automatically regulate ideal gears according to riding requirements, and is upgraded from the original mode that a person actively regulates a transmission ratio to adapt to road conditions to the mode that the speed change system can actively regulate the transmission ratio according to the road conditions and personal requirements, so that the speed regulation function is achieved. Comprising a cover body, driving wheels and a middle shaft rotationally installed on the cover body, three driving wheel shafts and three driven wheel shafts are installed on the cover body at equal intervals, the driving wheel shafts and the driven wheel shafts are arranged at intervals, each driving wheel shaft is provided with a driving wheel set, and each driven wheel shaft is provided with a driven wheel set; the middle shaft is fixedly connected with a sun gear used for driving the driving wheel set to rotate, the driving wheel set and the driven wheel set are sleeved with a transmission belt, and the transmission belt is in a Y shape. One ends of cranks are fixed to the two ends of the middle shaft, a retainer is slidably connected to one end of the middle shaft, and a side pushing gear ring is fixed to the end, close to the middle shaft, of the crank close to one side of the retainer.

    本发明涉及调速的技术领域,具体为自行车自动变速及半自动变速系统,能根据骑行的需求自动调节理想的档位,从以往的人主动调节传动比适应路况升级至变速系统能够根据路况和个人需求来主动调节传动比,进而达到调速的功能;包括罩体、带动轮以及转动安装在罩体上的中轴,罩体上等间距安装有三根驱动轮轴以及三根从动轮轴,并且驱动轮轴与从动轮轴间隔设置,每根驱动轮轴均设置有驱动轮组,每根从动轮轴均设置有从动轮组;中轴固定连接有用于带动驱动轮组进行旋转的太阳轮,驱动轮组和从动轮组套装有传动带,并且传动带形成Y型;中轴两端均固定有曲柄的一端,中轴一端滑动连接有保持架,靠近保持架一侧的曲柄的靠近中轴一端固定有侧推齿环。


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    Title :

    Automatic speed changing and semi-automatic speed changing system of bicycle


    Additional title:

    自行车自动变速及半自动变速系统


    Contributors:
    YANG CHENG (author)

    Publication date :

    2024-11-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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