| 摘要 |
Described is a carriage unit for sliding doors or windows of the lift and slide type (1) comprising a pair of main and secondary carriages (4, 5), associated, in use, on the lower crosspiece (6) of a sash (3) and resting on a horizontal base track (7) to allow the sliding of the sash (3) in both the opening and closing directions; the secondary carriage (5) comprises: a first box-type frame (8) having an upper portion (8a) designed to be slidably coupled, in use, to the lower crosspiece (6) of the sash (3); a second frame (9) supporting a pair of wheels (10, 11) positioned, in use, resting on the track (7); the second frame (9) is designed to allow a pivoting movement of the two wheels (10, 11) about a single pivot point (P1); a link mechanism (12) for lifting and lowering the sash (3) relative to the track (7), corresponding to the open and closed positions, respectively, of the sash (3); the link mechanism (12) is positioned and acting between the first frame (8) and, in use, the connecting unit (17) rigid with the main carriage (4); means (34) for adjusting the distance of the movable sash (3) relative to the track (7) at least in its lowered position, positioned between the first frame (8) and the second frame (9) and acting directly on the first frame (8). |
