Friction wheel gear for commercial bicycle, has one bearing, and shaft including rolling wheel at its both ends and axially displaceable on drive and output pulleys, where pulleys are made from aluminum and wheel is made from rubber

摘要

The gear has a rolling wheel (2), which is provided at both ends of an axially adjustable shaft (4), and a bearing (7). The shaft is axially displaceable on a drive pulley (1) and an output pulley. The shaft drives the drive pulley and the output pulley, where the pulleys are provided at angle of 90 degree relative to the rotation axis of the shaft. The rolling periphery of the drive pulley is enlarged by the axial displacement of the shaft in a direction. The pulleys are made from aluminum and the rolling wheel is made from rubber.