Hinged storage container for tape cartridge with self-aligning walls

A storage container for storing an article comprising:

• a first wall having opposed front and back edges, opposed side edges, and a first inner surface;
• a second wall having opposed front and back edges, opposed side edges, and a second inner surface;
• a pair of opposed side walls extending inwardly from said second inner surface proximate said respective opposed side edges, each side wall including an elongated ramp declined toward said second inner surface and terminating in a notch;
• a front wall extending inwardly from said second inner surface proximate said front edge and connecting said side walls;
• a back wall including first and second hinges connected to said respective back edges such that said first inner surface is capable of being moved into a facing relationship relative to said second inner surface, said first and second hinges being formed of a resilient material and serving to normally bias said first and second walls apart, said first, second, back, front and side walls serving to form an enclosure for storing an article when said front edges are aligned;
• a first rib extending inwardly from said first inner surface a distance from said side edges and said front edge that is slightly greater than that corresponding to the location of said side and front walls such that said first rib is enclosed by said side and front walls when said walls are formed into said enclosure;
• a pair of rigid second ribs, each being molded to a respective outer surface of said first rib in alignment with said notches when said walls are formed into said enclosure, and having a ramp-engaging surface whereby when said inner surfaces are moved into a facing relationship said ramp-engaging surfaces engage said ramps, and whereby continued movement forces said ramp-engaging surfaces to slide relative to said ramps and into engagement with said respective notches, said movement serving to correspondingly move said second wall to a location such that said respective front edges of said first and second walls are aligned;
• a pair of third ribs each extending inwardly from said first inner surface at locations outside and parallel to respective ones of said first ribs, said first and third ribs serving to capture said side walls when said walls are formed into said enclosure;
• and
• latching means for securing said first, second, back, front and side walls into said enclosure when said front edges are aligned.