Novel bicycle

The utility model discloses a novel bicycle, including the proper motion driving license body, axis and chain wheel, the fixed crank that is provided with in centraxonial both ends, chain wheel and the coaxial fixed setting of axis, its technical scheme main points are one the crank is provided with a plurality of arc linking arms with axis fixed connection's one end, the arc linking arm is kept away from centraxonial one end and is provided with the connecting block, the chain wheel is the ring form, and is provided with a plurality of first tooth on its outer circumference, and it has a plurality ofly and connecting block complex extension to extend to its centre of a circle orientation on the interior circumference, through removable subassembly fixed connection between extension and the connecting block. The utility model discloses the advantage that has the be liable to change chain wheel. 本实用新型公开了种新型自行车，包括自行车本体、中轴和牙盘，所述中轴的两端固定设置有曲柄，所述牙盘与中轴同轴固定设置，其技术方案要点是，根所述曲柄与中轴固定连接的端设置有若干根弧形连接臂，所述弧形连接臂远离中轴的端设置有连接块；所述牙