SPEED CHANGE OPERATING DEVICE FOR A BICYCLE

摘要

The present invention relates to a speed-change operating device suitable for use with a cycle derailleur having a return spring, which device has a base member 1 having a pivot shaft 2 and a control lever 3 mounted rotatably on said pivot shaft 2 for actuating the derailleur. The speed change operating device has a friction mechanism for subjecting said control lever 3 to a rotational resistance against the biasing force of the derailleur return spring, and a positioning mechanism for said lever 3 mechanism is provided with a positioning member 5 having a plurality of engagement portions 5a for setting the speed change stages of the derailleur and an engaging member 6 engageable with at least one of said engagement portions 5a. An operating mechanism is provided for selecting operation or non-operation for positioning of said control lever 3 by means of said positioning member 5 and engaging member 5 of said positioning mechanism.