Device for height adjustment of seat post used for securing bicycle saddle, comprises a locking unit used for locking the seat post relative to the casing main portion, which has several recesses for engaging with the seat post

摘要

The height adjustment device comprises a seat post (S), and a casing main portion (H) formed relative to the seat post, such that the seat post is telescopically adjustable. A locking unit is arranged to lock the seat post relative to the casing main portion. The locking unit has several recesses (B1,B2,Bn) for engaging with the seat post. The seat post is closable by a plug made of plastic. The plug is designed such that it closes the recesses, while preventing the locking unit from interfering with the recesses.