To provide a hinge device which can produce a large frictional force in spite of a simple construction and can maintain the position at any given location even if a switching member or a rocking member has comparatively heavy weight.

By employing a bearing 2 which accommodates, within a bearing case part 4 thereof, a plurality of movable plates 6 which are non-turnable with respect to a shaft 3 and are movable in axial direction thereof, a plurality of stationary plates which are non-turnable with respect to the bearing case 4 and movable in axial direction thereof, an actuation member 8 actuating a restraint function part axially in which a plurality of movable plates and stationary plates are arranged alternately in axial direction, it enables the bearing 2 to be built-in between a main body part 23 of an electricity/electronic equipment and a turning member 24 which opens and closes or swings, then the turning member 24 can be made to be held in any position against the main body part 23.