An adjustable seat tube structure which is for adjusting a height of a saddle for a bicycle includes a lower tube, an upper tube and a piston set. The lower tube includes a top end. The upper tube is disposed at the lower tube and is limitedly moved relative to the lower tube. The upper tube is linked with the saddle and includes an upper end, an inner space, and a lower end. The upper end is protruded out of the top end, and the inner space is for receiving a gas. The lower end is corresponded to the upper end. The piston set includes a piston, a valve and a rod. The piston is disposed inside the inner space, and the lower end is moved relative to the piston. The valve is disposed inside the piston and the rod is connected to the piston.
ADJUSTABLE SEAT TUBE STRUCTURE
VERSTELLBARE SITZROHRSTRUKTUR
STRUCTURE DE TUBE DE SIÈGE RÉGLABLE
2018-03-07
Patent
Electronic Resource
English
IPC: | B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS |