Rotating shaft mechanism and foldable display device including the same

A rotating shaft mechanism, comprising:

• a supporting frame, wherein an accommodating cavity is disposed in the supporting frame;
• a synchronization slider slidably disposed in the accommodating cavity;
• a fixing piece rotatably connected to the synchronization slider;
• and
• a cam assembly comprising a first cam and a second cam, wherein the first cam is disposed on the supporting frame and the second cam is disposed on the synchronization slider;
• wherein the fixing piece is configured to provide a driving force for the synchronous slider, enabling the synchronization slider to slide in the accommodating cavity in a direction parallel to an axis of the supporting frame, and driving the second cam disposed on the synchronization slider to slide on the first cam disposed on the supporting frame.

A foldable display device, comprising:

• a first middle frame;
• a second middle frame disposed at a side of the first middle frame;
• a rotating shaft mechanism disposed between the first frame and the second middle frame, wherein the first frame is connected to the second middle frame through the rotating shaft mechanism;
• wherein the rotating shaft mechanism comprises:
• a supporting frame, wherein an accommodating cavity is disposed in the supporting frame;
• a synchronization slider slidably disposed in the accommodating cavity;
• a fixing piece rotatably connected to the synchronization slider;
• and
• a cam assembly comprising a first cam and a second cam, wherein the first cam is disposed on the supporting frame and the second cam is disposed on the synchronization slider;
• wherein the fixing piece is configured to provide a driving force for the synchronous slider, enabling the synchronization slider to slide in the accommodating cavity in a direction parallel to an axis of the supporting frame, and driving the second cam disposed on the synchronization slider to slide on the first cam disposed on the supporting frame;
• and
• a flexible display panel covering the first middle frame, the second middle frame, and the rotating shaft mechanism.