Hinge of a mobile terminal having an inward-foldable flexible screen and a mobile terminal having an inward-foldable flexible screen

1. A hinge of a mobile terminal having an inward-foldable flexible screen, wherein it comprises a left support plate, a middle support plate, a right support plate, a left support frame, a right support frame, and a middle U-shaped cover;

The inner ends of the left support frame and the right support frame are connected with a synchronous mechanism, so that the left support frame and the right support frame can rotate synchronously and reversely;

The middle support plate is a liftable plate with the position corresponding to the middle U-shaped cover, and the middle support plate descends to the bottom of the middle U-shaped cover; the middle support plate is not connected with the left support plate or the right support plate, and a left guide drive mechanism and a right guide drive mechanism are respectively arranged between the left support frame and the middle support plate, and between the right support frame and the middle support plate; the rotation of the left support frame and the right support frame forces the middle support plate to make corresponding ascending or descending movement through the left guide drive mechanism and the right guide drive mechanism, and the descent distance of the middle support plate in the first half of the hinge being folded from the unfolded state is greater than that of the second half of the hinge being folded from the unfolded state;

The left support plate is movably connected between the left support frame and the middle U-shaped cover, and the right support plate is movably connected between the right support frame and the middle U-shaped cover;

The left support plate, the middle support plate and the right support plate form the middle support plane of the flexible screen when the hinge opens to the flattened state, and form a bent configuration after the hinge is folded to provide space for the flexible screen to bend.

2. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 1 , wherein the left guide drive mechanism and the right guide drive mechanism each comprises a guide drive groove and a pin cooperated with the guide drive groove.

3. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 1 , wherein the left support plate and the right support plate are telescopic components, which are respectively rotatably connected with the left support frame and the right support frame at the outer ends, and at the inner ends, are respectively rotatably connected with the portions at the middle U-shaped cover at which is away from the rotation centers of the left support frame and the right support frame; the distance between the rotation centers of the inner ends and the outer ends of the left support plate and the right support plate is variable during the unfolding and folding of the hinge.

4. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 3 , wherein the rotation centers of the outer ends of the left support plate and the right support plate are respectively located at the height of the flexible screen above the left support and the right support plate.

5. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 3 , wherein the left support plate and the right support plate respectively comprise a flexible screen support plate and a connection plate, and the flexible screen support plate and the connection plate are slidably connected; one end of the flexible screen support plates of the left support plate and the right support plate are respectively rotatably connected with the left support frame and the right support frame, and one end of the connection plates of the left support plate and the right support plate are respectively rotatably connected with the U-shaped cover in the middle.

6. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 3 , wherein a spring mechanism is connected between the flexible screen support plate and the connection plate of the left support plate, and between the flexible screen support plate and the connection plate of the right support plate, so that the spring energy storage stage is at the beginning stage of which the hinge is closed from the unfolded state to the folded state and at the beginning stage of which the hinge is opened from the folded state to the unfolded state, and in the later stage, the spring changes from energy storing to potential energy releasing, so that the hinge is automatically opened or folded in the energy release stage.

7. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 1 , wherein the hinge is provided with structures for stopping the rotation and positioning at any time at the inner ends of the left support frame and the right support frame.

8. The hinge of a mobile terminal having an inward-foldable flexible screen according to claim 1 , wherein both ends of the middle U-shaped cover are respectively connected to the shell of the synchronous mechanism at the corresponding end through a connection structure, and the left support frame and the right support frame are provided with concession holes for giving way to the connection structure for the left support frame and the right support frame to rotate.

9. A mobile terminal having an inward-foldable flexible screen, wherein the mobile terminal is provided with the hinge according to claim 1 , wherein the flexible screen is laid on the inner side of the hinge.