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. The transmission assembly comprises an input gear, a fixed gear and a middle duplicate gear. 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 middle duplicate gear comprises a power transmission gear and a power output gear which are of an integrated structure, the power transmission gear is meshed with the input gear, the power output gear is meshed with the fixed gear, and the middle duplicate gear can revolve and roll around the fixed gear; the middle duplicate gear is connected with the power output assembly through the duplicate gear shaft and can drive the duplicate gear shaft to rotate on the revolution rolling track.
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;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;动力轴与传动组件之间连接有卷簧,传动组件包括输入齿轮、固定齿轮以及中间双联齿轮;卷簧的卷绕内端与动力轴连接,卷绕外端与输入齿轮连接,中间双联齿轮包括一体结构的动力传导齿轮及动力输出齿轮,动力传导齿轮与输入齿轮啮合连接,动力输出齿轮与固定齿轮啮合连接,能够使中间双联齿轮围绕固定齿轮公转滚动;中间双联齿轮通过双联齿轮轴与动力输出组件连接,可带动双联齿轮轴在公转滚动轨迹上转动。
Bicycle speed change device and bicycle
一种自行车变速装置及自行车
2024-01-02
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
Bicycle speed variator, bicycle, and method and device for speed change of bicycle
European Patent Office | 2015
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