| 摘要 |
<p>A device for opening or closing a curtain, comprising lateral guides (1, 1') to whose upper ends is fixed an upper box element (2, 4), and comprising also a bar-handle (3, 4) that may slide along these guides, between an initial opened position and a final closure position. The pleated fabric (11) of the curtain extends between the bar-handle (3, 4) and the upper box element (2, 4). A system of pulleys (13, 14), mounted inside the bar handle, is used to guide threads which extend from a thread-locking device (15), located at the lower ends of the lateral guides (1, 1'), as far as fixing points (16) that preferably consist of elastic means used to compensate for the elongation of the threads. To lift the curtain up to a certain level, the user needs only to act on the bar-handle and to release it in the desired position.</p> |
