| 摘要 |
<p>A roller blind (4) covers or reveals a large vertical window (3) is raised or lowered by a drive unit (15) coupled to an elongated roller (10). The up or down blind motion is assisted by a moving guide (7) which follows the blind (4) edge (4c). The winding roller esp. simultaneously raises and lowers upper (4e) and lower (4f) sections of the blind. The winding roller (10) moves to different vertical positions depending.</p> |
