| 摘要 |
The shutter in question comprises three elements, a central translucent element (1) made of synthetic resin, for example of polycarbonate, with a plane external surface (AB) and a concave internal surface (CD) to reduce bulkiness during rolling. The upper element (2) and the lower element (3) are made of metal, preferably of oxidised aluminium, and can be threaded in with a dovetail joint at the ends of the translucent element (1). Said elements (2 and 3) can also be threaded in and are complementary, that is to say male and female, to constitute the articulation which is very strong mechanically. Said shutter can be installed as replacement for known shutters without modifying the raising and rolling mechanisms. <IMAGE> |
