A bicycle seat adjustment device includes an inner tube which is inserted into a seat post. The bicycle seat is connected to the top end of the inner tube. The seat post is movably inserted into the upper portion of an outer tube, and the retractable portion of the inner tube is located in the lower portion of the outer tube. An operation unit is connected to the bottom end of the outer tube and controls the movement of the inner tube.
Bicycle seat adjustment device
2018-05-15
Patent
Electronic Resource
English