The sliding device (1), in particular for vehicle sun visor (2), arranged so as to pivot about a rod (3) intended to be connected to a stationary element such as, in particular, the passenger compartment of a vehicle. The sliding device (1) comprises a sliding carriage (4) slidably mounted inside a tubular profile member (6). The sliding carriage (4) and the tubular profile member (6) comprise respectively complementary male and female fitting members with a substantially triangular cross-section that define at least two bearing surfaces of the sliding carriage (4) on the tubular profile member (6) in the direction of the return force of the return member (7). The bearing surfaces are symmetrical and inclined by an angle (α) with respect to the longitudinal plane of symmetry (P) of the sliding device (1).