Patent ID: 7293650

Claim:
A tape cassette storage case, comprising: a case body comprising a bottom plate having a rectangular shape and a side wall along a periphery of the bottom plate so that the tape cassette can be stored inside; a lid portion comprising a connecting portion connected to one side of the case body with a hinge so that the lid portion covers an opening side enclosed by the side wall; and a bumper portion provided at a periphery of the case body and the lid portion so that the bumper portion projects to an outside from the side wall when the lid portion is in a closed position, the periphery including opposite sides of the connecting portion in the case body and the lid portion, wherein the bumper portion has thick-walled portions, thicker than other portions of the bumper portion, at each corner of the bumper portion, and wherein the thickness of the thick-walled portions extends in a direction from the bottom plate to the lid portion when the lid portion covers the opening side.