| 摘要 |
An object of this invention is to provide a hinge device excellent in durability and a foldable cellular phone using the hinge device. The hinge device includes: a cylindrical case 7 having a bottom formed on one end; a disk member 6 contained in the bottom of this case, and rotating integrally with this case; a cam member 4 contained in the case, wherein at a closed position and an open position of a cover body 12, an engagement state in which the cam member is engaged with the disk member is maintained to fixed the cover body 12, and the engagement state is cancelled by rotation caused by an opening or a closing operation of the cover body 12; an urging means 3 for causing one end to press the cam member in a direction of the disk member, and for maintaining the engagement state in which the cam member is engaged with the disk member; and a stop 2 that prevents the other end of the urging means from moving in an axial direction, and that rotates integrally with the cam member.
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