| 摘要 |
A box with improved fastener means. The box has a member and two trays, where the member is positioned between the two trays and connected to the trays. Each of the trays has at least one article receiving pocket and a lid that is hinged to the respective tray along the outer edge of the box, opposite the member. The box has a groove of dovetailed cross-section. The groove includes the member, positioned at the bottom of the groove, and two opposed lateral walls projecting from the member. Each of the lateral walls is attached to a respective tray. The two lids are reversibly fastened to the groove. The lids are formed to contain rims that are substantially either reverse "Z" shaped or "Z" shaped, with each rim having a tongue which is placed within the groove when the lid is closed. In the closed position, the rim fits within the groove and against the lateral wall of the groove which is closest to it. Since the dovetailed groove has decreasing width as the vertical distance from the bottom of the groove increases, when both rims are fitted into the groove during fastening, the tongue of the second rim lies directly above the tongue of the first rim and is forced into a slightly bowed shape, thus locking the lids in the closed position.
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