| 摘要 |
<p>The device has connection elements (2), where each element comprises an attachment unit (30) and a bar (1) that connects the elements. The bar is secured to the elements through a fixing unit (40). Each of the elements includes attachable parts (3, 4) comprising the attachment unit and the fixing unit, respectively. The parts are secured with each other by an assembly unit formed of fingers (34) and cavities (48). The assembly unit is designed so as to authorize or prevent the parts to form an angle with predetermined value, where a final position of the device is maintained by screwing.</p> |
