Hinge structure and foldable electronic device

Abstract

A hinge structure includes a first rotating shaft, a second rotating shaft, a dual-axis rotating assembly, a first torque module, a second torque module, a front bracket, and a rear bracket. The front bracket is located between the first torque module and the second torque module. The second torque module is located between the front bracket and the rear bracket. A first linkage member of the second torque module is slidably disposed in a first slide rail of the front bracket, and one end of a first torsion spring is connected to the first linkage member. A second linkage member of the second torque module is slidably disposed in a second slide rail of the rear bracket, and one end of a second torsion spring is connected to the second linkage member. When the two components rotate relative to each other, the first and second linkage members are adapted to move within the first and second slide rails, causing deformation of the first and second torsion springs.

Claims

1. A hinge structure adapted to connect between two bodies of a foldable electronic device, such that the two bodies can be rotated open and closed by means of the hinge structure, the hinge structure comprising: A first rotating shaft is assembled into one of the machine bodies; A second rotating shaft is assembled to another body; a dual-axis rotating assembly connects the first and second rotating shafts, enabling them to rotate synchronously; a first torque module is located on one side of the dual-axis rotating assembly; a second torque module is located between the first torque module and the dual-axis rotating assembly, the second torque module including a first torsion spring, a second torsion spring, a first linkage, and a second linkage, wherein the first torsion spring has a first actuating end and a first fixed end, and the second torsion spring has a second actuating end and a second fixed end; a front bracket is sleeved on the first and second rotating shafts and located between the first and second torque modules, the front bracket having a first slide rail; and a rear bracket is sleeved on the first and second rotating shafts, with the second torque module located between the front bracket and the rear bracket, the rear bracket having a second slide rail. A portion of the first linkage is slidably disposed in the first slide rail, the first actuating end is connected to the first linkage, and the first fixed end is connected to the rear bracket. A portion of the second linkage is slidably disposed in the second slide rail, the second actuating end is connected to the second linkage, and the second fixed end is connected to the front bracket. When the two bodies rotate relative to each other, the first linkage and the second linkage are adapted to move within the first slide rail and the second slide rail, and cause the first torsion spring and the second torsion spring to deform.

2. The hinge structure as claimed in claim 1, wherein the first linkage includes a first insertion portion extending into the first slide rail, the first insertion portion having a first recess, and the second linkage includes a second insertion portion extending into the second slide rail, the second insertion portion having a second recess.

3. The hinge structure as claimed in claim 2, wherein the second torque module further comprises: A first cam, connected to the first rotating shaft and located between the front bracket and the first linkage, the first cam including a first protrusion that engages with the first recess; and a second cam, connected to the second rotating shaft and located between the rear bracket and the second linkage, the second cam including a second protrusion that engages with the second recess.

4. The hinge structure as claimed in claim 1, wherein the first linkage includes a first extension having a first through hole through which the first actuating end passes, and the second linkage includes a second extension having a second through hole through which the second actuating end passes.

5. The hinge structure as claimed in claim 4, wherein the first extension extends toward the second pivot and the second extension extends toward the first pivot.

6. The hinge structure as claimed in claim 4, wherein the front bracket has a first fixing hole near the second pivot, the second fixing end is inserted into the first fixing hole, and the rear bracket has a second fixing hole near the first pivot, the first fixing end is inserted into the second fixing hole.

7. The hinge structure as claimed in claim 1, wherein the hinge structure further includes two latches located on the side of the rear bracket away from the front bracket and respectively fastened to the first pivot and the second pivot.

8. The hinge structure as claimed in claim 1, wherein the dual-axis rotating assembly includes a fixed structure, the first torque module includes a first torque member, a second torque member, an automatic locking cam and a two-section torque cam located between the fixed structure and the front bracket, the first torque member and the automatic locking cam being sleeved on the first rotating shaft, and the second torque member and the two-section torque cam being sleeved on the second rotating shaft.

9. The hinge structure as claimed in claim 8, wherein when the included angle between the two bodies reaches a preset angle, the two torsion cams and the surface of the fixed structure press against each other along a rotation axis to increase the torque output of the second torsion member.

10. A foldable electronic device, comprising: Two bodies; A hinge structure connects the two bodies, which are opened and closed by means of the hinge structure. The hinge structure includes: a first pivot, assembled to one of the bodies; A second rotating shaft is assembled to another body; a dual-axis rotating assembly connects the first and second rotating shafts, enabling them to rotate synchronously; a first torque module is located on one side of the dual-axis rotating assembly; a second torque module is located between the first torque module and the dual-axis rotating assembly, the second torque module including a first torsion spring, a second torsion spring, a first linkage, and a second linkage; a front bracket is sleeved on the first and second rotating shafts and located between the first and second torque modules; and a rear bracket is sleeved on the first and second rotating shafts, with the second torque module located between the front and rear brackets. A portion of the first linkage is slidably disposed in a first slide rail of the front bracket, a first actuating end of the first torsion spring is connected to the first linkage, and a first fixed end of the first torsion spring is connected to the rear bracket. A portion of the second linkage is slidably disposed in a second slide rail of the rear bracket. A second actuating end of the second torsion spring is connected to the second linkage, and a second fixed end of the second torsion spring is connected to the front bracket. When the two bodies rotate relative to each other, the first linkage and the second linkage are adapted to move within the first slide rail and the second slide rail, and cause the first torsion spring and the second torsion spring to deform.

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