Grip gear-shifter for actuating derailleur of bicycle

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;
• guiding ring having a guiding slot and a circular indent for guiding and receiving a cable, a spring slot for receiving said return spring and a guiding notch for receiving said resilient steel plate;
• a first module for lodging and positioning said controlling pawl when said bicycle are 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 position said derailleur when said bicycle arc in said state of shifting gears.

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 slot and a circular indent for guiding and receiving a cable, a spring slot for receiving said return spring and a guiding notch for receiving said resilient steel plate;
• an operating grip having plural fixing slots for being used in operations of up-shift and down-shift;
• a rubber cover for covering said operating grip handled by a user;
• a fixing main body for securing said grip gear-shifter to said bicycle;
• a grip-fixing element having a flange for lodging in an annular slot of said operating grip to fix said operating grip;
• a positioning slide having plural notches for being lodged by said controlling pawl and positioning said controlling pawl when said bicycle is in said state of shifting gears;
• a clamping element for suiting said fixing main body and fixing said fixing main body to a handlebar of said bicycle;
• ad
• a cable trimmer disposed at a wound end of said cable for adjusting the tension of said cable.