| 摘要 |
The device has a reception opening (9) for an insert that is removable insert, where the reception opening extends in a reception plane (R). The opening is delimited by a set of edges zones (70) of two retractable elements (7) that are provided in an engaged position. The retractable elements are provided in a swivellable manner with regard to a fulcrum pin (71) provided perpendicular to the reception plane between an engaged position and a retracted position. The retractable elements are joined in the engaged position by junction lines. |
