| 摘要 |
PROBLEM TO BE SOLVED: To provide a bicycle shift operating device capable of smoothly and reliably operating a part of a bicycle transmission such as a bicycle derailleur. SOLUTION: The bicycle shift operating device comprises a bicycle mounting member 24, a shift operating member 26, a take-up member 28, a positioning member 30, a first retaining mechanism 32, and a second retaining mechanism 34. The shift operating member 26 is rotatably coupled to the mounting member 24 to move in opposing rotational directions. The take-up member 30 is rotatably coupled to the mounting member 24 to selectively pull and release a shift control cable. The positioning member 30 is rotatably coupled to the mounting member 24. The first retaining mechanism 32 is arranged to retain the positioning member 30 relative to the mounting member 24. The second retaining mechanism 34 is coupled to the take-up member 28 and the positioning member 30 to normally apply a retaining force on the take-up member 28 and the positioning member 20. The second retaining mechanism 34 is arranged to reduce the retaining force upon moving the shift operating member 26. COPYRIGHT: (C)2006,JPO&NCIPI |
