| 摘要 |
A roller shutter slat has hollow sectional slats (1) with a central part (1c ), two edge parts (1a) and transverse grooves (1b) arranged therebetween for receiving b earing or adjusting links (3,4). The edge parts (1a) and the central parts (1c) are sp aced apart and interconnected by linking elements (5, 6, 40, 41) inserted into hollow chamb ers (26) of the hollow sectional slat (1). The cross-section of the linking elements (5, 6, 40, 41) is narrower than the cross-section of the hollow chambers (26) and the linking elements (5, 6, 40, 41) are linked to the hollow sectional slats (1) by tongue-and-groove joints (9, 10; 42, 43). Easy-to- produce grooves (1b) are thus created without weakening the roller shutter s lat (1) in the area of the grooves (1b).
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