Control Device for the Rear Shock Absorber of a Bicycle

摘要

The present invention provides a control device for the rear shock absorber of a bicycle, comprising a first air chamber, a second air chamber, a third air chamber, an auxiliary air chamber, and a sliding rod; wherein an air piston is arranged inside one of said first, second and third air chambers, and moreover those air chambers are respectively provided with an air hole communicating with said auxiliary air chamber; said sliding rod is configured with air tight rings, which are arranged top-to-bottom and tightly touch the inner wall of said auxiliary air chamber; moreover, said sliding rod is provided with grooves between said air tight rings so that the axially movement of said sliding rod may manage said first, second and third air chambers to be disconnected or to communicate with one other via said grooves so as to adjust the damping coefficient of the rear shock absorber.

主权项

1. A control device for the rear shock absorber of a bicycle is an air shock absorbing unit comprising: at least a first air chamber, a second air chamber, a third air chamber, an auxiliary air chamber, and a sliding rod; wherein,
said first air chamber of which the interior filled with air and which has an air piston arranged with a first air hole communicating with said auxiliary air chamber; said second air chamber of which the interior filled with air and which is arranged with a second air hole communicating with said auxiliary air chamber; said third air chamber of which the interior filled with air and which is arranged with a third air hole communicating with said auxiliary air chamber; said sliding rod, disposed inside said auxiliary air chamber, and provided with at least a first air tight ring, a second air tight ring and a third air tight ring which are arranged top-to-bottom; wherein said first, second and third air tight rings tightly touch the inner wall of said auxiliary air chamber, and moreover, a first groove is formed between said first air tight ring and said second air tight ring, and a second groove is formed between said second air tight ring and said third air tight ring; moreover said sliding rod is controlled by an adjusting unit to move axially in said auxiliary air chamber; wherein said first groove may manage said first and second air chambers to be disconnected or to communicate with each other by the axially movement of said sliding rod, and said second groove may manage said second and third air chambers to be disconnected or to communicate with each other by the axially movement of said sliding rod so as to adjust the damping coefficient of said air piston arranged to said air shock absorbing unit.