TELEPHONE SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a mobile telephone system that a user can open the case of the mobile telephone in one hand and prevents the case from being opened in mistake. SOLUTION: When the user depresses a push button (37) placed at both ends of a hinge section, a tip of a lever (311) slides on grooves (331), (332) of a moving cam (33) so as to allow the moving cam (33) in an opening direction of the case attended therewith.