Hinge structure, folding mechanism and mobile terminal

A folding mechanism, wherein the folding mechanism comprises a first end, a second end, and at least two connection components;

• the first end and the second end are configured to be connected to an external mechanism;
• and
• each of the connection components comprises at least one hinge structure, two adjacent ones of the connection components are connected via the at least one hinge structure, and the at least two connection components are disposed between the first end and the second end;
• wherein the at least one hinge structure comprises a main support, a limit support, a sub support, and a shaft sleeve;
• the main support comprises a sliding groove disposed therein;
• the limit support is rotationally connected to the main support via a straight shaft, the straight shaft is disposed in the sliding groove, and a limit groove is disposed at one side of the limit support;
• the sub support is connected to the limit support via a crank shaft, the sub support is sleeved on the crank shaft, a crank sliding block is disposed at one end of the crank shaft, and the crank sliding block is disposed in the limit groove;
• and
• the shaft sleeve comprises a first sub sleeve and a second sub sleeve which are respectively disposed at two ends of the shaft sleeve, the first sub sleeve is sleeved on the straight shaft, and the second sub sleeve is sleeved on the crank shaft;
• wherein when the main support rotates relative to the sub support, the straight shaft slides in the sliding groove and the crank sliding block slides in the limit groove.

A mobile terminal, wherein the mobile terminal comprises a first housing, a second housing, a flexible display screen, and a folding mechanism;

• the first housing is connected to the second housing via the folding mechanism, and the flexible display screen is disposed on the first housing, the folding mechanism, and the second housing;
• when the first housing and the second housing are in a folded state, the flexible display screen is bent;
• when the first housing and the second housing are in an unfolded state, the flexible display screen is unfolded to be a flat plane;
• the folding mechanism comprises a first end, a second end, and at least two connection components;
• the first end is configured to be connected to the first housing, and the second end is configured to be connected to the second housing;
• and
• each of the connection components comprises at least one hinge structure, two adjacent ones of the connection components are connected via the at least one hinge structure, and the at least two connection components are disposed between the first end and the second end;
• wherein the hinge structure comprises a main support, a limit support, a sub support, and a shaft sleeve;
• the main support comprises a sliding groove disposed therein;
• the limit support is rotationally connected to the main support via a straight shaft, the straight shaft is disposed in the sliding groove, and a limit groove is disposed at one side of the limit support;
• the sub support is connected to the limit support via a crank shaft, the sub support is sleeved on the crank shaft, a crank sliding block is disposed at one end of the crank shaft, and the crank sliding block is disposed in the limit groove;
• and
• the shaft sleeve comprises a first sub sleeve and a second sub sleeve which are respectively disposed at two ends of the shaft sleeve, the first sub sleeve is sleeved on the straight shaft, and the second sub sleeve is sleeved on the crank shaft;
• wherein when the main support rotates relative to the sub support, the straight shaft slides in the sliding groove and the crank sliding block slides in the limit groove.