1results about How to "Small starting force" patented technology

The application relates to a high-speed stretching controllable spring for bicycle seat adjustment, which comprises a starting top rod, a hollow piston rod, a framework guide, a sealing ring, a pressurized air cavity, a positioning groove, a piston assembly, an oil cavity and a cylinder barrel, the cylinder barrel is divided into the pressurized air cavity and the oil cavity by the positioning groove, the framework guide is arranged at one end of the cylinder barrel, the sealing ring is arranged on one side of the framework guide, the piston assembly is arranged at one end of the oil cavity, one end of the hollow piston rod is connected with the piston assembly, the other end of the hollow piston rod penetrates through the framework guide and extends to the outside of the cylinder barrel, the starting top rod is arranged in the hollow piston rod in a penetrating mode, a piston valve needle is arranged in the piston assembly, and the piston valve needle is connected with the starting top rod; the application solves the problem of slow seat adjustment stretching speed, improves the adjustment response efficiency, reduces the product size, optimizes the installation adaptability, reduces the compression ratio and reduces the operation force change.