| 摘要 |
PURPOSE: An opening and shutting dial briefcase including a steel plate and an electromagnet is provided to open and close an upper cover inside the briefcase and the briefcase itself by an attraction from a magnetic force. CONSTITUTION: An opening and shutting dial briefcase comprises the following: a steel plate and an electromagnet attached on contacting areas of the separated briefcase; a lock in the center of the contacting area; a switch on the surface of the briefcase and a protrusion on one side of the briefcase; a battery in the inner center of the upper part of the briefcase; a heater inside a handle; and a switch for the heater and a dial key installed on a connection unit of the handle. |
