| 摘要 |
A deformable upright to obtain arched ceilings and nonlinear openings said upright being constituted by a strip of sheet metal punched and folded along two parallel fold lines to form a U-shape consisting of a base (10) and wings (12), the wings being provided with flaps, said upright being consistituted by a plurality of symmetrical modules with respect to the longitudinal axis of the upright, wherein each module has:
- on the wings (12) two hourglass shaped openings (16) which do not extend over the fold line (8) and which extend over the folding lines (18) of the flaps (14) with respect to the wings (12),
- on the base (10) a central slot (22) formed from a substantially elliptical portion (24) which extends on both sides in two slotted openings (26),
- on the base (10), externally to the central slot (22), four slotted inclined cutouts (28) which has one end close to the elliptical portion (24) and the other end near the ends of the base of the hourglass shaped openings (16). |
