| 摘要 |
<p>The invention concerns a casing formed by a lid and a receptacle characterized by an opening (30) riding on the edge (12) delimiting the location E of the disc D and blocked by a pin (40, 140). A prismatic lever block (50, 150), with a polygonal cross-section, borne by the pin, is mobile in the opening (30) and has a ramp (51), a display facet (53), visible via the back (30) to indicate the absence of the disc and a support facet (52) against which the inner edge (24) of the lid (2) is pressed when the lever block (50) is in a position indicating the absence of the disc.</p> |
