The invention aims to design an automatic speed change device of a bicycle. The device is composed of a rear wheel axle sleeve, a rear wheel, a gear disc, a multi-stage speed change flywheel, a fixing plate, a gear shaft, an air blower gear, an air blower shell, an air guide pipe, a sliding rod, a folding air box, a sliding gear shifting transmission gear, a limiting baffle, a transmission chain, an air blower transmission chain, a metal support, an elastic metal sheet, air blowing blades, a micro exhaust port, a bearing, an annular groove, a bicycle frame, a chain wheel, and springs and the like. A rear wheel axle sleeve is connected with a multi-stage speed change flywheel and a gear disc, an air blower shell is connected with a folding air box provided with a micro exhaust port, and a chain wheel is connected with a sliding gear shifting transmission gear and the multi-stage speed change flywheel through a transmission chain. The chain wheel rotates to drive the gear disc to rotate, the air blower gear rotates along with the chain wheel, air is fed into the folding air bellow, the folding air bellow controls sliding of the sliding gear shifting transmission gear through air pressure, and the transmission chain moves along with the sliding gear shifting transmission gear to achieve automatic gear shifting.

    本发明的目的在于设计一种自行车自动变速装置,由后轮车轴套、后车轮、齿轮盘、多级变速飞轮、固定板、齿轮轴、鼓风机齿轮、鼓风机壳体、导气管、滑杆、折叠风箱、滑动换挡传动齿轮、限位挡板、传动链条、鼓风机传动链条、金属支架、弹性金属片、鼓风叶片、微型排气口、轴承、环形凹槽、自行车架子、牙盘、弹簧等组成。后轮车轴套连接多级变速飞轮和齿轮盘,鼓风机壳体和开有微型排气口的折叠风箱连接,牙盘通过传动链条与滑动换挡传动齿轮和多级变速飞轮连接。牙盘转动带动齿轮盘转动,鼓风机齿轮随着转动,风送入折叠风箱,折叠风箱通过风压控制滑动换挡传动齿轮的滑动,传动链条随滑动换挡传动齿轮移动实现自动换挡。


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    Title :

    Automatic speed change device of bicycle


    Additional title:

    一种自行车自动变速装置


    Contributors:

    Publication date :

    2021-12-03


    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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