Rotating shaft and electronic device

An electronic device, comprising a first body, a second body, and the rotating shaft, wherein the first body and the second body are rotatably disposed on two sides of the rotating shaft respectively by using a rotating member in the rotating shaft;

• wherein the rotating shaft comprises at least one damping module, the damping module comprising:
• a mounting shaft;
• a rotating member, wherein the rotating member is rotatably connected to the mounting shaft and is in an axial direction of the mounting shaft, the rotating member is in sliding fit with the mounting shaft, a first mating gear tooth is disposed at a first end of the rotating member, and a second mating gear tooth is disposed at a second end of the rotating member;
• a first cam, disposed on the mounting shaft, wherein a first gear tooth is disposed on the first cam, the first gear tooth comprises a first damping part, and a first included angle exists between the first damping part and a radial direction of the mounting shaft;
• and
• a second cam, disposed on the mounting shaft, wherein a second gear tooth is disposed on the second cam, the second gear tooth comprises a hovering part, a second included angle exists between the hovering part and the radial direction of the mounting shaft, and the second included angle is greater than the first included angle;
• wherein
• the second mating gear tooth of the rotating member is in sliding contact with the second gear tooth of one second cam, and the first mating gear tooth of the rotating member is in sliding fit with the first gear tooth of one first cam, or is in sliding contact with the second gear tooth of another second cam.