Abstract: Embodiments provide a hinge mechanism and a foldable mobile terminal. A swing arm component and a synchronization component are disposed on both sides of a main shaft component of the hinge mechanism, so that when a swing arm rotates around the main shaft component, a synchronization arm on a same side as the swing arm rotates accordingly to drive a synchronization arm and a swing arm on the other side to rotate, and further, housings on both sides of the foldable mobile terminal including the main shaft component can move synchronously, and force of a flexible screen is relatively even. In addition, because swing arms on both sides of the main shaft component rotate around different axes, through such a design, accommodation space that can accommodate the flexible screen can be formed during rotation of the swing arms, so that damage to the flexible screen is reduced.

Abstract: In a folding mobile phone (folding portable electronic device), a cam mechanism (support mechanism) includes a first guide groove, a second guide groove, a first guide pin engaged into the first guide groove, a second guide pin engaged into the second guide groove, and a link member connecting the first and second guide pins. The cam mechanism supports a liquid crystal display part to allow the liquid crystal display part to turn clockwise and counterclockwise as viewed from the front, thereby allowing the liquid crystal display part to be changed between a vertical position and a horizontal position. Furthermore, the cam mechanism includes an urging mechanism urging the second guide pin to allow the liquid crystal display part to reach the vertical or horizontal position in either turning direction.

Abstract: In a folding mobile phone (folding portable electronic device), a cam mechanism (support mechanism) includes a first guide groove, a second guide groove, a first guide pin engaged into the first guide groove, a second guide pin engaged into the second guide groove, and a link member connecting the first and second guide pins. The cam mechanism supports a liquid crystal display part to allow the liquid crystal display part to turn clockwise and counterclockwise as viewed from the front, thereby allowing the liquid crystal display part to be changed between a vertical position and a horizontal position. Furthermore, the cam mechanism includes an urging mechanism urging the second guide pin to allow the liquid crystal display part to reach the vertical or horizontal position in either turning direction.