Combined minidisc box

A combined minidisc box comprising:

• an upper case comprising:
• two tuner sides having grooves, two outer sides having continuous interval dovetails and dovetail slots, the dovetails and dovetail slots of one side being faced to each dovetail slot and dovetail, respectively, of the other side, and four fitting holes each comprising a front part, a first fixing plate and a second fixing plate;
• a lower case comprising:
• two outer sides having flanges which can be slid into said grooves of said upper case to connect said lower case with said upper case, four fitting posts, each defined by a concave part and a rear part, located on the bottom of said lower case which are situated opposite to the fitting holes of the upper case;
• the combined minidisc box characterized in that:
• said two continuous interval dovetails and dovetail slots of said combined minidisc box are able to be fitted respectively with the continuous interval dovetail slots and dovetails of the other like structured combined minidisc boxed;
• furthermore said fitting posts of said lower case can be inserted into the front part of said fitting holes, defined by said first fixing plate, of the upper case of other like structured combined minidisc boxes, and said fitting posts are further able to be pushed into the rear part of said fitting holes, defined by said second fixing plate, so as to make said concave part of each of said fitting posts fit with said first fixing plate of each of said fixing holes, meanwhile said rear part of each of said fitting posts being stopped by means of said second fixing plate;
• therefore, a plurality of said combined minidisc boxes can be connected with each other on their top, bottom, left side and right sides.