| 摘要 |
The foldable leg pairs (5() in the outwardly folded position, with an angle between them in their upper part are provided with a recess in which the releasable top beam (1) is placed. Hinges (3) are placed under the recess and on the leg pair insides facing one another. The two leg pairs upper parts are directed towards one another so that the legs are inclined at an angle to the vertical. - The top beam (1) is provided with a stop heel formation, track or similar (4) near each end, against which the leg pair upper parts support. The leg pair lower part is locked against turning outwards with the aid of the top beam lower edge. The lower part of the leg pair recess is bevelled or the hinges are fitted so that a cap occurs between the upper parts of the legs (2). |
