The invention provides a two-gear speed change chainless transmission shaft of a bicycle, which comprises a middle shaft shell, a middle shaft cover, a front driving spiral bevel gear, a front driven spiral bevel gear, a crank rotating shaft, a planet carrier mechanism, an inner gear ring mechanism, a guide sleeve, a limiting sleeve, a gear shifting fork, a transmission shaft shell assembly, a transmission mandrel, a rear driving spiral bevel gear mechanism, a rear driven spiral bevel gear, a transmission shaft cover, a ratchet mechanism and the like. The two-gear speed change chainless transmission shaft is simple in structure and convenient to use, the flat ground riding speed requirement and the uphill speed reduction and torque increase requirement can be met by switching gears through a shifting rod, a traditional inner speed change mechanism is generally arranged in the rear hub, so that the rear hub can only serve as a speed change mechanism, and along with the increasing development of the bicycle technology and requirements, and the function of the rear hub is changed. A novel bicycle intelligent lock and a power generation mechanism are required to be installed in a rear hub, so that a speed change mechanism cannot be installed on the rear hub, the problem is well solved through a speed change chainless transmission shaft, and bicycle application is more diversified.
本发明提供了一种自行车两档变速无链传动轴,包括中轴外壳,中轴盖,前主螺旋锥齿轮,前从螺旋锥齿轮,曲柄转轴,行星架机构,内齿圈机构,导向套,限位套,档位拨叉,传动轴外壳总成,传动芯轴,后主螺旋锥齿轮机构,后从螺旋锥齿轮,传动轴轴盖,棘轮机构等组成。本发明结构简单,使用方便,利用拨杆切换档位,即可满足平地骑行速度要求又可满足上坡减速增矩要求,传统内变速机构一般设置在后花鼓内部,导致后花鼓只能做变速机构,随着自行车技术和要求的日益发展,后花鼓的功能正在变化,新型自行车智能锁和发电机构已经要求安装在后花鼓内部,导致后花鼓无法安装变速机构,变速无链传动轴很好的解决了这个问题,使得自行车应用更加多样化。
Two-gear speed change chainless transmission shaft of bicycle
一种自行车两档变速无链传动轴
2021-08-13
Patent
Electronic Resource
Chinese
IPC: | B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer |
European Patent Office | 2017
European Patent Office | 2015
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