Support module, display module and display device

A supporting module for supporting a flexible display screen, wherein the supporting module comprises a supporting assembly, transmission assemblies and a synchronous assembly;

• the supporting assembly comprises a fixed plate and movable plates, and both sides of the fixed plate are hinged with one movable plate;
• the synchronous assembly is fixed on the fixed plate, and the transmission assemblies are located at a bottom of the movable plate and a bottom of the fixed plate;
• a bottom surface of each movable plate is movably connected to a first end of one transmission assembly, and second ends of the transmission assemblies located at both sides of the fixed plate are movably connected to the synchronous assembly;
• when a first included angle is disposed between a supporting surface of one movable plate and a supporting surface of the fixed plate, a supporting surface of the other movable plate keeps the first included angle with the supporting surface of the fixed plate under an action of the transmission assembly and the synchronous assembly;
• wherein the supporting surface of the movable plate and the supporting surface of the fixed plate are both surfaces for supporting the flexible display screen, and the bottom surface of the movable plate is one surface opposite to the supporting surface of the movable plate;
• wherein the transmission assembly comprises a tooth arm and a pin, the synchronous assembly comprises a synchronous gear set, and the bottom surface of the movable plate is provided with a first supporting lug;
• a first end of the tooth arm is provided with a hinging hole, a second end of the tooth arm is a tooth surface, and an axis of the hinging hole is parallel to an axis of any gear in the synchronous gear set;
• the first supporting lug protrudes from the bottom surface of the movable plate, a first arc chute is formed in the first supporting lug, and the pin passes through the hinging hole and the first arc chute, so that the first end of the tooth arm is hinged with the movable plate;
• and
• any one of the two gears in the synchronous gear set is meshed with the second end of one tooth arm.