| 摘要 |
The insect protection device comprises a frame (1) which comprises corner elements (5,6) and displaceable longitudinal bar (3) and transverse bar (4) which are displaced relative to the force of springs in the plane of the frame, and an associated cover element (2). A flexible traction element (12) is connected with the tensioning elements (15) such that the corner elements are moved against each other by actuating the tensioning elements. |
