| 摘要 |
The invention relates to a box (3) with four sides (6) and a flexible lid which consists of a front pane (1) and a plate (2). The plate (2) has along the sides (6) panels (8) perpendicular to the plane of the plate, which panels end in abutments or vertexes (9) opposite the middle of the edges of the plate. The lid (1, 2) is flush with the front side of the box (3) when the abutments or the vertexes (9) bear against the bottom (12) of the box or against projections (11) on the sides (6) of the box. Between the front pane (1) and the plate (2) a transparency may be inserted. When the transparency is to be removed a pressure is exerted at one of the corners of the front pane (1). The corners of the other diagonal of the front pane then turn up above the front edge of the box in such a way that these corners may be grasped and the lid (1, 2) removed. By reassembling a pressure is exerted at the middle of the lid (1, 2) until the vertexes (9) bear against the bottom of the box (12) or the projections (11). |
