Flexible transmission structure of bicycle

Abstract

A flexible transmission structure of a bicycle includes a stop block, a right crank, a compression spring, a load-bearing rod, a chainring and a bottom bracket. The chainring is sleeved on the bottom bracket and is rotatable thereon. The load-bearing rod and the stop block are fixed on the chainring. The load-bearing rod is arranged on a front side of the right crank. The stop block is arranged on a rear side of the right crank. A load block is fixed on the load-bearing rod. Two ends of the compression spring are sleeved on spring seats on respective upper portions of the load-bearing rod and the right crank. The stop block is configured to abut against the right crank to preload the spring. When a pedal rotates to near the top dead center, the pedal is depressed to compress the spring, thereby alleviating leg fatigue during bicycle riding.

Dependencies are inferred from the claim text.