Disk container provided with antitheft function and unlocking tool

A combination of a disk container provided with antitheft function and an unlocking tool,

• said disk container comprising:
• a container body having a disk space defined therein, a cover plate hinged to said container body to open and close the disk space of said container body, and a lock plate;
• said unlocking tool having a magnet installed therein;
• said container body and said cover plate being so constructed that said container body may define a locking space to accommodate said lock plate when said container body is covered by said cover plate, and said container body having a slot made on one side to communicate with said locking space;
• said container body and said cover plate being provided with engagement portions in the form of projection or recess, and said lock plate being provided with counter engagement portions in the form of recess or projection, thereby preventing said cover plate from opening by making said engagement portions of said container body and cover plate engage with said counter engagement portions of said lock plate when said cover plate closes said container body with said lock plate inserted in said locking space;
• one of said lock plate and, said container body being provided with a stopper to prevent said lock plate from falling off, and the other being provided with a catch to catch said stopper;
• said stopper being composed of a flat spring whose top end has a lock nail to be caught, by said catch, thereby assuring that said disk container be prevented from opening inadvertently by inserting said lock plate in said locking space until said lock nail of said flat spring is caught by said catch, said lock nail being responsive to application of the magnetic force of said unlocking tool to be pulled apart and released from said catch.