US 2006/0189423 A1Published application

Bicycle gear shifting control apparatus

AssigneeShimano Inc.

InventorsTadashi Ichida, Kazuhiro Fujii, Ryuichiro Takamoto, Masahiko Jimbo

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Abstract

A bicycle gear shifting control apparatus has a manually operated shift device, a first gear shifting operation executing component, and a second gear shifting operation executing component. The manually operated shift device operates a front derailleur to shift gears. In response to operation of the manually operated shift device, the first gear shifting operation executing component executes a first gear shifting operation to move the front derailleur from a first shift position of a first sprocket to a second shift position of second sprocket. The second gear shifting operation executing component executes a second gear shifting operation to move the front derailleur a very small amount from the second shift position to a post shift position upon determining that the shifting operation should proceed.

Claims18

Dependent claims

A bicycle gear shifting control apparatus comprising:

a front derailleur including a movable chain guide configured to move a bicycle chain;
a manually operated shift device configured and arranged to operate the front derailleur to shift gears between at least a first sprocket and a second sprocket with the first and second sprockets being selectively an initial sprocket and a shifted sprocket depending on a shift direction;
a first gear shifting component configured to perform a first gear shifting operation to move the chain guide from an initial sprocket engaged position to a shifted sprocket engaged position in response to a manual operation of the manually operated shift device such that the bicycle chain is shifted from the initial sprocket to the shifted sprocket;
and
a second gear shifting component configured to perform a second subsequent gear shifting operation to move the chain guide an additional amount from the shifted sprocket engaged position to a post shift position that maintains the bicycle chain on the shifted sprocket after pausing at the shifted sprocket engaged position.

2 more elements

Dependencies are inferred from the claim text.