| 摘要 |
A number of U-shaped braces (8a-8e) are provided to tension the weather-protective cover sheet, the two arms of each brace being rotatably fitted around a right-angled axis (9a-9e) to the frame components (2) on the two bearer parts (6). The two bearer parts (6) are rotatably fitted on the fixture parts (4), and can turn between two rest positions. Each of them has two supports (6a,6b) which locate against the corresp. frame component in the respective rest positions, and a stop fitted between two brace component arms. This stop works in conjunction with these arms so that when one of them turns from a positioning locating against it, the barrier part (6) is turned from one rest position to the other. When the other arm is turned from a position against the stop, the bearer part is turned from the second rest position back to the first. |
