Patent ID: 6644143
Filing Date: 2003-11-11
Classification: B62K,B62M,Y10T

Abstract:
A grip gear-shifter for being used in actuating a derailleur of a bicycle, comprising:a return spring; a resilient steel plate having a polyhedron-formed controlling pawl; a guiding ring having a guiding notch for guiding a cable; a first module for lodging and positioning said controlling pawl when said bicycle is in the state of shifting gears; and a second module having a projection and a positioning unit for operating in coordination with said return spring and said resilient steel plate, thereby forming a relative motion of said resilient steel plate and said first module to correctly shift gears when said bicycle is in said state of shifting gears, including: an operating grip having plural fixing slots for being used in operations of up-shift and down-shift, wherein said operating grip comprises said projection and said positioning unit for pressing said return spring to form a resilience due to the deformation of said return spring, wherein said positioning unit comprises a contacting portion and a positioning lump for said controlling pawl not being limited in said notch and having space to move when said grip-shifter in said state of shifting gears.