US Patent 9254938 Packaging container with opening and closing lid

A packaging container with an opening and closing lid, an opening is cut in an edge of the lid-raising member of a rear-side plate on a side of a lid-raising member of the inner case. A stopper is formed on part of the incision opening. An upper end edge of the stopper is an incision edge of the opening arranged at the lowest position of descent of an outer-case locking member and lower than a height position of inner-case locking member. The stopper approaches the outer-case locking member as the inner case moves upward. The outer-case locking member has at least a part of a stopper-corresponding portion in contact against the incision edge being the stopper, so that the outer-case locking member, which moves downward relative to the upward movement of the inner case, is in contact against the part that is the lowest position of descent thereof.