| 摘要 |
The flat roof roller-blind has spring-loaded rollers onto which each blind web winds. The web(s) is pulled off by a rope chain etc., acting on a bar working in lateral guides and secured to the web free end. It has several spring-loaded rollers (1,1') in tandem in the web extension direction. At least one slide in lateral rails (2). The rollers are mounted in pairs, the web unwinding from them in opposite directions, with the free ends fixed to a common bar (4). The rope etc. acts on the front roller (1') in the extension direction. ADVANTAGE - Simple design and easy operation, without sagging of the blind.
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