The invention relates to the field of electric bicycles, and discloses a middle driving device and an electric auxiliary bicycle. The middle driving device comprises a mounting bracket, a driving unitand an elastic metal plate group; the mounting bracket comprises a top plate, a first side plate and a second side plate, the first side plate and the second side plate are oppositely arranged, the top plate is connected with a frame, and a mounting part is formed by the top plate, the first side plate and the second side plate in an enclosing manner; the driving unit comprises a machine shell, adriving motor and a middle shaft, the machine shell is inserted into the mounting part, the first side part of the machine shell is connected with the first side plate through a bolt, the driving motor is arranged in the machine shell, and the middle shaft is arranged in the machine shell in a penetrating manner and is in transmission connection with an output shaft of the driving motor; and thetwo ends of the elastic metal plate group are respectively connected with a second side part and the second side plate of the machine shell through bolts, and the maximum elastic deformation of the elastic metal plate group in the direction vertical to the second side plate is not less than a maximum gap between the second side part and the second side plate. According to the middle driving device, stress borne by the driving unit can be reduced, shaking is avoided, and stability and reliability are improved.

    本发明涉及电动自行车领域,公开一种中置驱动装置和电动辅助自行车,中置驱动装置包括:安装托架,包括顶板以及相对设置的第一侧板和第二侧板,顶板与车架连接,顶板、第一侧板和第二侧板围蔽形成安装部;驱动单元,包括机壳、驱动电机和中轴,机壳插设于安装部中,机壳的第一侧部与第一侧板通过螺栓连接,驱动电机设于机壳中,中轴穿设于机壳,与驱动电机的输出轴传动连接;以及弹性金属板组,两端分别与机壳的第二侧部和第二侧板通过螺栓连接,弹性金属板组在垂直于第二侧板的方向上的最大弹性变形量不小于第二侧部与第二侧板之间的最大间隙。本发明提供的中置驱动装置能够降低驱动单元所受的应力,避免晃动,提高稳定性和可靠性。


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    Titel :

    Middle driving device and electric auxiliary bicycle


    Weitere Titelangaben:

    一种中置驱动装置和电动辅助自行车


    Beteiligte:
    ZENG QIFANG (Autor:in)

    Erscheinungsdatum :

    2020-12-15


    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 / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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