FIELD: machine engineering.
SUBSTANCE: drive for a bicycle with an internal arrangement of two shaft interconnection system comprises an input shaft with a driven sprocket and an output shaft. The system of two shafts interconnection is placed inside rear wheel sleeve. The gears are switched without changing the engagement of gears. Torque from the sprocket is applied to the input shaft of the two shafts interconnection system. In the two shafts system, the output shaft connects the wheel and the free-wheeling device. The axles are fixed along the circumference of the wheel with the possibility of rotation. Gears are fixed on axles, and have a gearing with a gear on the input shaft through intermediate gear. Brake gears are arranged in one plane with the gears coaxially with the input shaft axis. The action of the input shaft on the output shaft is carried out by braking the brake gear by means of brake clutches or brake shoes.
EFFECT: change of the gear ratio is achieved without changing the position of the sprockets on the drive wheel.
10 dwg
