| 摘要 |
<p>The device has two-fold metal frames (7) designed such that a short intermediate piece (9) that is bent about 90 degrees, is attached at a long shank (8). An end piece (10) is connected with a frame of a chair, where the plane that is formed from the shank and the intermediate piece stay in perpendicular to a plane that is formed from the pieces. The frames are inserted with the shank through an elongated hole (11) that is introduced in backrest frames (6). The hole is locked by a simple rotating movement in a locking device (12) within the frames (6), which are made of plastic.</p> |
