A bicycle middle power transmission mechanism without changing a bottom bracket comprises a middle shaft, a driving device and a chain wheel transmission device, crank mounting parts are arranged at the two ends of the middle shaft, the bicycle middle power transmission mechanism is characterized in that the driving device comprises a shell, the middle shaft penetrates through the shell, and a motor stator and a motor rotor are arranged in the shell; the shell is divided into a fixed part and a rotating part; a bearing is arranged between the fixed part and the rotating part of the shell for connection, the fixed part is installed on one side of a five-way pipe on a bicycle, and the rotating part is located in the five-way pipe. The rotating part is in transmission connection with the chain wheel transmission device; the stator is mounted on the fixed part, and the rotor is embedded in the rotating part; the electric bicycle does not need to be matched with a special bicycle frame and can be matched with most specifications of bicycle frames on the market, and stability and miniaturization of the overall structure are facilitated; according to the invention, the structure is compact, large torque output can be realized in a smaller space, the power requirement is met, and the stability is better; and the power output power can be controlled according to the treading frequency of a rider.

    一种不改变五通的自行车中置动力传动机构,包括中轴、驱动装置和牙盘传动装置,中轴的两端设有曲柄安装件,其特征在于,所述驱动装置包括壳体,中轴穿设与壳体内,壳体内部设有电机定子和转子;所述壳体分为固定部和转动部;所述壳体的固定部与转动部之间设有轴承进行连接,且固定部安装自行车上五通管的一侧,转动部位于五通管内;所述转动部与牙盘传动装置传动连接;所述定子安装在固定部上,转子镶嵌在转动部上;本发明无需与专门的车架配合,能够适配市面上大多数规格的车架,有利于整体结构的稳定性和小型化;结构紧凑,可以在较小的空间内实现大的扭矩输出,满足动力的需求,且具有较好的平稳性;能够根据骑行者踩踏的频率,控制动力输出功率。


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    Title :

    Bicycle middle power transmission mechanism without changing bottom bracket


    Additional title:

    一种不改变五通的自行车中置动力传动机构


    Contributors:
    LU WENFENG (author)

    Publication date :

    2024-03-08


    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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