Rotating mechanism and foldable terminal

A rotating mechanism comprising:

• a limit base comprising a first arc-shaped groove and a second arc-shaped groove;
• a first swing arm;
• and
• a second swing arm, wherein
• the rotating mechanism is applied to a foldable terminal, wherein the foldable terminal comprises a display that comprises a first structural layer, a second structural layer, and a third structural layer that are laminated, wherein during folding of the foldable terminal, a stretching deformation amount of the first structural layer is greater than that of the second structural layer and a stretching deformation amount of the third structural layer is less than that of the second structural layer;
• the first swing arm comprises a first rotating shaft portion, the first rotating shaft portion is slidably mounted in the first arc-shaped groove and may rotate with respect to the limit base, the second swing arm comprises a second rotating shaft portion, the second rotating shaft portion is slidably mounted in the second arc-shaped groove and may rotate with respect to the limit base, and the first rotating shaft portion and the second rotating shaft portion rotate in opposite directions with respect to the limit base;
• the first rotating shaft portion comprises a first arc-shaped part and a second arc-shaped part that are distributed in a circumferential direction of the first rotating shaft portion, the first arc-shaped part and the second arc-shaped part are fixedly connected, an axle center of the first arc-shaped part is located at the first structural layer, an axle center of the second arc-shaped part is located at the second structural layer, and the axle center located in the first arc-shaped part is away from one side of the second swing arm;
• and
• the second rotating shaft portion comprises a third arc-shaped part and a fourth arc-shaped part that are distributed in a circumferential direction of the second rotating shaft portion and a fifth arc-shaped part that is distributed in the circumferential direction of the first rotating shaft portion, wherein the fifth arc-shaped part is fixedly connected to one end that is of the second arc-shaped part and that is away from the first arc-shaped part, an axle center of the fifth arc-shaped part is located at the third structural layer, and the axle center located in the second arc-shaped part is away from one side of the second swing arm.