Patent ID: 7437969
Filing Date: 2008-10-21
Classification: B62M,Y10T

Abstract:
1. A bicycle shift operating device comprising: a mounting member adapted to be mounted on a handlebar; a first shift operating member pivotally coupled to a first pivot axle for rotation about a first pivot axis to move along a first shifting plane that is perpendicular to the first pivot axis; a second shift operating member pivotally coupled to a second pivot axle for rotation about a second pivot axis to move along a second shifting plane that is perpendicular to the second pivot axis and intersects the first shifting plane; a transmission control mechanism configured to control a bicycle transmission, the transmission control mechanism including a cable take-up mechanism configured to be retained in a plurality of shift positions, the cable take-up mechanism being operatively coupled to the first and second shift operating members such that movement of the first and second shift operating members selectively moves the cable take-up mechanism; and a release member pivotally mounted relative to the mounting member about a release pivot axis offset from the second pivot axis, the release member being operatively coupled to the second shift operating member such that movement of the second shift operating member moves the release member about the release pivot axis, the cable take-up mechanism further including a cable take-up member, a ratchet member and a locking member that is operatively engaged with the ratchet member to hold the cable take-up member in the plurality of shift positions, the locking member being pivotally mounted relative to the mounting member about a locking pivot axis that is offset from the release pivot axis and the second pivot axis, and the second shift operating member moving the release member about the release pivot axis when the second shift operating member is moved from a second rest position to a second shift position about the second pivot axis, and the locking member being moved about the locking pivot axis by the movement of the release member about the release pivot axis.