BICYCLE GEAR INDICATOR MECHANISM

摘要

A rotatable handgrip shifting device ( 10 ) that is mountable on a bicycle handlebar and connected to a bicycle gear changing mechanism by a cable within a tube and reversibly operable at discrete shift points corresponding to the gears of the bicycle gear changing mechanism. The shifting device ( 10 ) includes a handgrip ( 34 ) rotatable about the handlebar, a spool ( 30 ) rotatable with the handgrip ( 34 ) and a housing ( 12 ) that secures the shifting device ( 10 ) to the handlebar. The housing ( 12 ) includes a gear display ( 18 ) denoting a plurality of discrete shift points of the gear changing mechanism. A flexible member ( 40 ) includes at one end a pointer ( 44 ) and a spool tab ( 42 ) at another end. The pointer ( 44 ) is reciprocally displaceable along the gear display ( 18 ) in response to rotation of the handgrip ( 34 ). The spool tab ( 42 ) is removably attachable to the spool ( 30 ) or the handgrip ( 34 ) and configured such that the flexible member ( 40 ) spools at a radius permitting alignment of the pointer ( 44 ) with the plurality of discrete shift points denoted on the gear display ( 18 ).