A tilting hinge is disposed on a fixed housing and includes a rotating shaft, a bearing, and a movable piece. The rotating shaft includes a protrusion. Meanwhile, a lower half of the rotating shaft has a spiral curved surface. The bearing is provided with a spiral groove following the lower half of the rotating shaft, and the rotating shaft is biased toward the groove on the bearing by use of presser bar springs. Tilting of the movable housing causes the protrusion on the rotating shaft to slide on a surface of the groove on the bearing, and a rotation center of the rotating shaft to move upward.