Patent ID: 6343524
Filing Date: 2002-02-05
Classification: B62K,B62M,Y10T

Abstract:
A shifting controller for a rear derailleur of a bicycle, the rear derailleur having a derailleur cable, the shifting controller comprising:a) a base having a shell, a coupling tube and a guide tube, the coupling tube and the guide tube extending outwardly in opposite directions from the base, the shell bounding a recessed chamber between the coupling tube and the guide tube, a pair of spaced apart walls extending into the recessed chamber and forming a cable groove therebetween; b) a locating spring plate mounted on the shell, the locating spring plate having a protruding portion; c) a rotary knob assembly rotatably mounted on the coupling tube and comprising a body with a handgrip, a raised block with a recessed hole and a locating hole communicating with the recessed hole, and an arcuate recess; d) an arcuate positioning block located in the arcuate recess, the arcuate positioning block having an outer surface with a plurality of notches therein, the arcuate positioning block located such that the protruding portion of the locating spring plate engages one of the plurality of notches; and, e) an arcuate index plate with indicia thereon for indicating different gear positions, the arcuate index plate having a concave surface, a plug rod extending from the concave surface and engaging the recessed hole so as to attach the index plate to the rotary knob assembly, whereby the derailleur cable passes through the guide tube, the cable groove, the locating hole and is retained in the recessed hole.