Telescopic tube comprising a screwless, quickly sliding adjusting device having a blocking mechanism

摘要

A telescopic tube (20) having an adjusting device comprising an inner toothing (7) angularly interrupted by a longitudinal recess (8) and a male element (6) having an outer toothing (10) angularly interrupted by a second recess (11) so as to axially slide along the longitudinal recess (8) in a first predetermined angular position and selectively engage with the inner toothing (7) in a second predetermined angular position different from the first predetermined angular position for rigidly connecting the bushing (1) to the male element (6) in axial direction.