| 摘要 |
<p>Described is a carriage unit applicable to sliding doors or windows of the lift and slide type (1) comprising a fixed frame (2) and a sash (3) horizontally slidable relative to the frame (2), between an open position and a closed position; the carriage unit comprises at least one main carriage (4, 5), associated, in use, on the lower crosspiece (6) of the 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 main carriage (4, 5) comprises a first box-type frame (8) having an upper portion (8a) configured to be slidably coupled, in use, to the lower crosspiece (6) of the sash; a second frame (9) supporting a pair of wheels (10, 11) positioned, in use, resting on the track (7); the second frame (9) is configured 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, a drive linkage (13) controlled by a handle (14) positioned on the sash (3).</p> |
