IMPROVEMENTS IN THE OBJECT OF PATENTS BY NºP201430114: POWERTRAIN TO OPTIMIZE SHIFTING GEARS IN BICYCLE

摘要

Improvements in the object of the patent NºP201430114 by: transmission mechanism to optimize the gear shift bicycles, where the group of pinions (5) is fixed to the rear axle (11) and the plate (7) or serrated plates of the bottom bracket (8) are freely rotatable in one direction and engage on the contrary, through a freewheel (100) is formed from a housing (101) annular thickness (g) from 10 to l2 mm, inside which incorporates , secured by cap (102), the gear (103), the trigger (12) and two pairs of rings with multiple bearings (104) spherical. The toothed wheel is provided with respective grooves (107) machined as concentric circles on both sides thereof, coinciding with respective grooves (107) complementary to the inner face of the housing (101) and top (102), for they stay in bearings (104) spherical.