| 摘要 |
<p>The lintel case for a roller shutter has L-shaped blocks assembled into an inverted U-profile, with sealing bars gripping their bottom edges and fitted with outward - facing rendering protrusions. The shaped blocks (2) have a lengthways groove (10) on their bottom edges, widening upwards. These are engaged by upward-protruding anchoring stem pieces (26) on the rail-stype sealing bars, with locking ribs (28) on one or both sides. There are spring claws (30) clamping into the groove, engaging below the ribs and pressing the bars against the blocks. This permits quick and easy fitting of sealing bars, without using bonding media.</p> |
