The invention discloses a large chain wheel bicycle capable of being folded twice to form a hand-pulled trolley, which comprises a front fork assembly, a front wheel, a front hinge, a bicycle girder, a rear hinge, a chain, a flywheel, a right pedal, a large chain wheel assembly, a left pedal, a rear wheel, a movable short shaft pin, a shifting fork, a rear seat assembly and a hinge bracket, the front fork assembly comprises a foldable bicycle front handle and a bicycle front fork connected with a front wheel and a front hinge, the rear seat assembly comprises a bicycle rear seat and a hinge support connected with a rear wheel and a rear hinge, and the large chain wheel assembly comprises a large chain gear, a short shaft, two rolling bearings, a left pedal and a right pedal, shells of the two rolling bearings are respectively connected with a hinge bracket of the rear seat assembly through a left movable short shaft pin and a right movable short shaft pin; the flywheel is connected with the rear wheel, and the shifting fork is arranged on the rear seat assembly. The electric bicycle can be ridden, can also be dragged, can be used as a parking transportation tool among a bus, a subway and a destination, and is economical, applicable and not cumbersome.
本发明公开了一种折叠两次可成为手拉小车的大链轮自行车,包括前叉组件、前车轮、前绞链、自行车大梁、后绞链、链条、飞轮、右脚蹬、大链轮组件、左脚蹬、后车轮、活动短轴销钉、拨叉、后座组件和铰链支架,前叉组件包括可折叠的自行车前把手和前车轮与前绞链相连的自行车前叉,后座组件包括自行车后座和连接后车轮与后绞链的铰链支架,大链轮组件包括大链条齿轮、短轴、两个滚动轴承、短轴两端连着的左脚蹬和右脚蹬,两个滚动轴承的外壳分别通过左右两个活动短轴销钉与后座组件的铰链支架相连接;飞轮与后车轮连接在一起,拨叉设置在后座组件上。本发明既可骑行、也可以拖拽,可作为公交车、地铁和目的地之间的接泊代步工具,经济适用不累赘。
Big chain wheel bicycle capable of being folded twice to become hand-pulled trolley
一种折叠两次可成为手拉小车的大链轮自行车
2024-05-03
Patent
Elektronische Ressource
Chinesisch