Rotating shaft mechanism and electronic device

An electronic device, comprising a first housing, a second housing, a flexible display, and a rotating shaft mechanism, wherein

• the first housing and the second housing are respectively disposed on two opposite sides of the rotating shaft mechanism, the first support plate is fastened to the first housing, and the second support plate is fastened to the second housing;
• the flexible display continuously covers the first housing, the second housing, and the rotating shaft mechanism, and the flexible display is fastened to the first housing and the second housing;
• and
• wherein the rotating shaft mechanism comprises a main shaft module, wherein the main shaft module comprises a base, a first support plate, a second support plate, a first gear linkage, a second gear linkage, an elastic mechanical part, and a conjoined cam, wherein
• the first support plate and the second support plate are located on two opposite sides of the base, the first support plate and the second support plate are rotatably connected to the base, the first support plate is provided with a first track groove, and the second support plate is provided with a second track groove;
• the first gear linkage and the second gear linkage are rotatably connected to an end portion of the base, wherein one end that is of the first gear linkage and that faces the second gear linkage is provided with a first gear and a first cam structure that are coaxially disposed, and one end that is of the first gear linkage and that is away from the second gear linkage is provided with a first guiding part;
• and one end that is of the second gear linkage and that faces the first gear linkage is provided with a second gear and a second cam structure that are coaxially disposed, and one end that is of the second gear linkage and that is away from the first gear linkage is provided with a second guiding part;
• the first gear and the second gear are connected through transmission;
• the first guiding part is inserted into the first track groove and is slidable along the first track groove;
• and the second guiding part is inserted into the second track groove and is slidable along the second track groove;
• the conjoined cam is provided with a third cam structure and a fourth cam structure, the third cam structure is disposed opposite to the first cam structure, and the fourth cam structure is disposed opposite to the second cam structure;
• and
• the elastic mechanical part is located on a side that is of the first cam structure and the second cam structure and that is away from the conjoined cam, and the elastic mechanical part presses the first cam structure and the second cam structure against the conjoined cam.