| 摘要 |
<p>The roller shutter window element has a covering bar, for connection to the bottom of the shutter case, mounted on the top horizontal window frame shank and protruding beyond this on both longitudinal sides. There is a connection for lengthways insertion, between shutter case bottom (7) and horizontal top frame shank (2) and the bottom incorporates a slit (14) corresponding to this shank, prolonged on both sides into entry spaces for the protruding sections (6) of the covering bar (5). The slit may be fitted to the width of the horizontal shank by trimming the freely projecting bottom sections. The bottom may be double-walled, with the inner walling (8) overlapping the covering bar. Structure and installation are simple, with rapid connection even after the case has been completed and assembled with the shutter inside.</p> |
