Patent ID: 6264576
Filing Date: 2001-07-24
Classification: B62K,B62M,Y10T

Abstract:
A bicycle rear derailleur shifting controller of the type comprising a base, said base comprising a shell, a coupling tube raised from shell at one side and fastened to the handlebar of the bicycle, and a guide tube raised from said shell at an opposite side, said shell comprising a chamber and a cable groove extended in said chamber between said guide tube and said coupling tube to guide said derailleur cable, a derailleur cable moved to shift the rear derailleur mechanism of the bicycle, a rotary knob coupled to said coupling tube and rotated to move said derailleur cable, said rotary knob comprising a body coupled to said coupling tube of said base and a handgrip formed integral with one end of said body, and a cover plate fastened to said shell and covered on said chamber to secure said rotary knob in place and to guide rotary motion of said rotary knob on said coupling tube, wherein:said coupling tube comprises a longitudinal sliding track;said derailleur cable has an endpiece at one end thereof moved along said longitudinal sliding track;said body of said rotary knob comprising a sleeve and an outside annular flange raised around the periphery of said sleeve at one end remote from said handgrip, said sleeve comprising an axial center hole, which receives said coupling tube, and a stepped guide flange inside said axial center hole, said stepped guide flange comprising radially extended straight edges and axially extended sloping edges alternatively arranged at one end adjacent to said base and moved with said rotary knob to shift said derailleur cable.