Patent ID: 8375824

Claim:
A bicycle control device comprising: a base member including a pair of lateral side walls defining a width of the base member along a width direction; a positioning member pivotally mounted relative to the base member about a positioning member pivot axis, the positioning member including at least one positioning abutment; a positioning pawl pivotally mounted about a positioning pawl pivot axis to operatively engage the at least one positioning abutment of the positioning member; a wire takeup member pivotally mounted relative to the base member about the positioning member pivot axis, the wire takeup member having a proximal end portion pivotally mounted about the positioning member pivot axis and a distal end portion with an inner wire attachment structure and an inner wire contact surface, the inner wire contact surface remaining stationary with respect to the positioning member as the wire takeup member rotates about the positioning member pivot axis and being disposed on an outer peripheral edge of the wire takeup member, the inner wire contact surface and the inner wire attachment structure being located radially outward from the at least one positioning abutment and the positioning pawl pivot axis with respect to the positioning member pivot axis, the inner wire contact surface having a first end extending from the inner wire attachment structure and a second end spaced from the first end, the inner wire contact surface partially extending around the positioning member pivot axis, the inner wire contact surface including an operation point determining an effective lever arm between the positioning member pivot axis and an inner wire for controlling an amount of movement of the inner wire, the effective lever arm changing as a relative rotational position of the wire takeup member changes with respect to the positioning member pivot axis; a wire pulling pawl arranged to engage the positioning member, the wire pulling pawl being completely disposed between the distal end portion and the proximal end portion of the wire takeup member with respect to the width direction of the base member as viewed along a direction parallel to the positioning member pivot axis; and a first shift operating lever disposed between the lateral side walls along the width direction and movably mounted relative to the base member to rotate the positioning member about the positioning member pivot axis in response to movement of the first shift operating lever such that the wire takeup member rotates about the positioning member pivot axis in a first operating direction.