| 摘要 |
PURPOSE: A briefcase is provided, in which the inside of the briefcase and the inside cover are separable and the case can be opened and shut using gravitation of the magnetic force. CONSTITUTION: A briefcase includes: an electromagnet and a steel plate attached to the part contacting with the divided surface of the case; a lock which is attached to the middle side of the contacting part of the briefcase; a protrusion which is firmly installed in one side surface of the briefcase; a switch which is firmly installed in the surface of the briefcase; a steel plate attached to the inner surface of a lid; an electromagnet laid in the inner surface of the briefcase; a protrusion in the surface of the briefcase; a battery mounted on the inside center part of the lid; and a heater installed at the inner surface of the handle(14). |
