The invention relates to a bicycle speed change device and a bicycle. The bicycle speed change device comprises a power shaft, a transmission assembly and a power output assembly. The power shaft is fixed to a frame of the bicycle, and the two ends of the power shaft are connected with pedal cranks respectively and used for inputting power. A coil spring is connected between the power shaft and the transmission assembly, and the transmission assembly comprises an input gear, an output gear and a power connection gear used for power transmission. The winding inner end of the coil spring is connected with the power shaft, the winding outer end of the coil spring is connected with the input gear, the output gear is connected with the power output assembly, and the power output assembly is connected with a hub of the bicycle and used for transmitting power to the hub and driving the hub to rotate. According to the invention, the defects of the existing chain transmission bicycle are overcome, and the functions of high-speed-ratio transmission, intermittent stepless automatic speed change, storage of variable speed energy, release of assisting power and the like can be realized.

    本申请涉及一种自行车变速装置及自行车,其中自行车变速装置包括动力轴、传动组件以及动力输出组件;所述动力轴固定在自行车的车架上,且其两端分别连接有脚蹬曲柄,用于输入动力;所述动力轴与所述传动组件之间连接有卷簧,所述传动组件包括输入齿轮、输出齿轮以及用于进行动力传送的动力衔接齿轮;所述卷簧的卷绕内端与所述动力轴连接,卷绕外端与所述输入齿轮连接,所述输出齿轮与所述动力输出组件连接,所述动力输出组件与自行车的轮毂连接,用于将动力传送至轮毂并驱动其转动。本发明解决了现有链条传动自行车存在的诸多弊端,可实现大速比传动、间歇性无级自动变速以及变速能量的储存与释放助力等功能。


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    Titel :

    Bicycle speed change device and bicycle


    Weitere Titelangaben:

    一种自行车变速装置及自行车


    Beteiligte:
    LI SHENGLU (Autor:in) / LI SHUANGXIN (Autor:in)

    Erscheinungsdatum :

    2024-01-02


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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