Hinge mechanism and electronic device

1 . A hinge mechanism, used in a foldable electronic device, wherein the hinge mechanism is configured to be disposed opposite to a foldable portion of a flexible display of the electronic device that can be unfolded or folded by using the hinge mechanism, the hinge mechanism comprising:

a main shaft,

a first door plate;

a second door plate; and

a rotating module comprising a first rotating component, a second rotating component, a first housing fastening bracket, and a second housing fastening bracket;

wherein the first housing fastening bracket and the second housing fastening bracket are respectively disposed on two opposite sides of the main shaft;

wherein the first rotating component is located between the first housing fastening bracket and the second housing fastening bracket, and the second rotating component is located between the first housing fastening bracket and the second housing fastening bracket;

wherein the first rotating component comprises a first support arm, a first connecting member, and a first door plate fastening bracket;

wherein the first support arm is rotatably connected to the main shaft;

wherein the first support arm is slidably connected to the first housing fastening bracket;

wherein the first door plate fastening bracket is rotatably connected to the second housing fastening bracket;

wherein the first connecting member is located between the first support arm and the first door plate fastening bracket;

wherein the first connecting member is rotatably connected to the first support arm;

wherein the first connecting member is rotatably connected to the first door plate fastening bracket;

wherein the first connecting member is rotatably connected to the main shaft, or the first connecting member is slidably connected to the main shaft;

wherein the second rotating component comprises a second support arm, a second connecting member, and a second door plate fastening bracket;

wherein the second support arm is rotatably connected to the main shaft;

wherein the second support arm is slidably connected to the second housing fastening bracket;

wherein the second door plate fastening bracket is rotatably connected to the first housing fastening bracket;

wherein the second connecting member is located between the second support arm and the second door plate fastening bracket;

wherein the second connecting member is rotatably connected to the second support arm, and the second connecting member is rotatably connected to the second door plate fastening bracket;

wherein the second connecting member is rotatably connected to the main shaft, or the second connecting member is slidably connected to the main shaft;

wherein the first door plate is located on a side of the first door plate fastening bracket that faces the flexible display;

wherein the first door plate is fastened to the first door plate fastening bracket;

wherein the second door plate is located on a side of the second door plate fastening bracket that faces the flexible display; and

wherein the second door plate is fastened to the second door plate fastening bracket.

2 . The hinge mechanism according to claim 1 , wherein the first rotating component further comprises a first connecting rod that is located between the first support arm and the first connecting member, wherein the first support arm is rotatably connected to the first connecting rod, the first connecting member is rotatably connected to the first connecting rod, and an axis along which the first support arm rotates relative to the first connecting rod is parallel to but not coincident with an axis along which the first connecting member rotates relative to the first connecting rod; and

wherein the second rotating component further comprises a second connecting rod that is located between the second support arm and the second connecting member, wherein the second support arm is rotatably connected to the second connecting rod, the second connecting member is rotatably connected to the second connecting rod, and an axis along which the second support arm rotates relative to the second connecting rod is parallel to but not coincident with an axis along which the second connecting member rotates relative to the second connecting rod.

3 . The hinge mechanism according to claim 1 , wherein a first arc-shaped groove is disposed at an end portion of the first door plate fastening bracket and faces the second housing fastening bracket;

wherein a second arc-shaped rotating block is disposed on the second housing fastening bracket, the second arc-shaped rotating block being mounted in the first arc-shaped groove and being capable of sliding along a groove surface of the first arc-shaped groove;

wherein a second arc-shaped groove is disposed at an end portion of the second door plate fastening bracket and faces the first housing fastening bracket; and

wherein a first arc-shaped rotating block is disposed on the first housing fastening bracket, the first arc-shaped rotating block being mounted in the second arc-shaped groove and being capable of sliding along a groove surface of the second arc-shaped groove.

4 . The hinge mechanism according to claim 3 , wherein an axis center at which the second housing fastening bracket rotates relative to the first door plate fastening bracket is located on the side of the first door plate fastening bracket that faces the flexible display, and wherein an axis center at which the first housing fastening bracket rotates relative to the second door plate fastening bracket is located on the side of the second door plate fastening bracket that faces the flexible display.

5 . The hinge mechanism according to claim 1 , wherein the main shaft is provided with a first track slot and a second track slot;

wherein the first connecting member comprises a first sliding block;

wherein the first sliding block is mounted in the first track slot and is capable of sliding relative to the main shaft along the first track slot to limit a motion trajectory of the first connecting member;

wherein the second connecting member comprises a second sliding block; and

wherein the second sliding block is mounted in the second track slot and is capable of sliding relative to the main shaft along the second track slot to limit a motion trajectory of the second connecting member.

6 . The hinge mechanism according to claim 1 , wherein the main shaft is provided with a first track slot and a second track slot, the first track slot being an arc-shaped slot;

wherein the first connecting member comprises a first sliding block;

wherein the first sliding block is an arc-shaped sliding block that is mounted in the first track slot and is capable of rotating relative to the main shaft along the first track slot to limit a motion trajectory of the first connecting member;

wherein the second track slot is an arc-shaped slot; and

wherein the second connecting member comprises a second arc-shaped sliding block that is mounted in the second track slot and is capable of rotating relative to the main shaft along the second track slot to limit a motion trajectory of the second connecting member.

7 . The hinge mechanism according to claim 6 , wherein the first connecting member comprises two first sliding blocks that are respectively disposed at two end portions of the first connecting member in an axial direction of the hinge mechanism, wherein axis centers at which the two first sliding blocks rotate relative to the main shaft coincide; and

wherein the second connecting member comprises two second sliding blocks that are respectively disposed at two end portions of the second connecting member in the axial direction of the hinge mechanism, wherein axis centers at which the two second sliding blocks rotate relative to the main shaft coincide.

8 . The hinge mechanism according to claim 1 , wherein the hinge mechanism comprises a plurality of rotating modules including the rotating module, wherein the first door plate is fastened to each first door plate fastening bracket, and wherein the second door plate is fastened to each second door plate fastening bracket.

9 . The hinge mechanism according to claim 1 , wherein the hinge mechanism further comprises a synchronization component that comprises a synchronization gear is located between the first connecting member and the second connecting member in an axial direction of the hinge mechanism;

wherein a first gear surface is disposed at an end portion of the first connecting member that faces the synchronization gear, the first gear surface being engaged with a gear surface of the synchronization gear; and

wherein a second gear surface is disposed at an end portion of the second connecting member that faces the synchronization gear, the second gear surface being engaged with the gear surface of the synchronization gear.

10 . The hinge mechanism according to claim 9 , wherein the first connecting member comprises two first sliding blocks, which are respectively disposed at two end portions of the first connecting member in the axial direction of the hinge mechanism;

wherein a first track slot corresponding to each first sliding block is disposed on the main shaft;

wherein each first sliding block is mounted in the corresponding first track slot and is capable of sliding or rotating relative to the main shaft along the corresponding first track slot;

wherein the first gear surface is disposed on the first sliding block facing the synchronization gear;

wherein the second connecting member comprises two second sliding blocks, which are respectively disposed at the two end portions of the second connecting member in the axial direction of the hinge mechanism;

wherein a second track slot corresponding to each second sliding block is disposed on the main shaft;

wherein each second sliding block is mounted in the corresponding second track slot and is capable of sliding or rotating relative to the main shaft along the second track slot; and

wherein the second gear surface is disposed on the second sliding block facing the synchronization gear.

11 . The hinge mechanism according to claim 1 , wherein the hinge mechanism further comprises a damping module that comprises a first swing rod component, a second swing rod component, an elastic component, and a first conjoined cam;

wherein, in an axial direction of the hinge mechanism, the first swing rod component is located between the elastic component and the first conjoined cam, and the second swing rod component is located between the elastic component and the first conjoined cam;

wherein the first swing rod component comprises a first swing rod, a second swing rod, and a first guide rod;

wherein the first swing rod and the second swing rod are rotatably connected to the main shaft;

wherein the first swing rod and the second swing rod are connected through the first guide rod;

wherein a third track slot is disposed on the first housing fastening bracket;

wherein the first guide rod is inserted into the third track slot and is capable of sliding along the third track slot;

wherein the second swing rod component comprises a third swing rod, a fourth swing rod, and a second guide rod;

wherein the third swing rod and the fourth swing rod are rotatably connected to the main shaft;

wherein the third swing rod and the fourth swing rod are connected through the second guide rod;

wherein a fourth track slot is disposed on the second housing fastening bracket;

wherein the second guide rod is inserted into the fourth track slot and is capable of sliding along the fourth track slot;

wherein a first cam surface is disposed on an end surface of the first swing rod that faces the first conjoined cam;

wherein a third cam surface is disposed on an end surface of the third swing rod and faces the first conjoined cam;

wherein the first conjoined cam comprises a fifth cam surface disposed toward the first swing rod and a sixth cam surface disposed toward the third swing rod; and

wherein, in the axial direction of the hinge mechanism, under action of an elastic force of the elastic component, the first cam surface abuts against the fifth cam surface, and the third cam surface abuts against the sixth cam surface.

12 . The hinge mechanism according to claim 11 , wherein the damping module further comprises a second conjoined cam;

wherein the first swing rod component is located between the first conjoined cam and the second conjoined cam;

wherein the second swing rod component is located between the first conjoined cam and the second conjoined cam;

wherein a second cam surface is disposed on an end surface of the second swing rod that faces the second conjoined cam;

wherein a fourth cam surface is disposed on an end surface of the fourth swing rod that faces the second conjoined cam;

wherein the second conjoined cam comprises a seventh cam surface disposed toward the second swing rod and an eighth cam surface disposed toward the fourth swing rod; and

wherein, in the axial direction of the hinge mechanism, under the action of the elastic force of the elastic component, the second cam surface abuts against the seventh cam surface,

and the fourth cam surface abuts against the eighth cam surface.

13 . The hinge mechanism according to claim 11 , wherein the main shaft further comprises a first mounting portion and a second mounting portion;

wherein, in the axial direction of the hinge mechanism, the first mounting portion is located between the first swing rod and the second swing rod;

wherein the first swing rod and the second swing rod are rotatably connected to the first mounting portion through a first shaft;

wherein, in the axial direction of the hinge mechanism, the second mounting portion is located between the third swing rod and the fourth swing rod; and

wherein the third swing rod and the fourth swing rod are rotatably connected to the second mounting portion through a second shaft.

14 . The hinge mechanism according to claim 13 , wherein the damping module further comprises a plurality of gaskets, at least one gasket being located between the first swing rod and the second swing rod;

wherein, in the axial direction of the hinge mechanism, under the action of the elastic force of the elastic component, the first swing rod and the second swing rod press the at least one gasket located between the first swing rod and the second swing rod toward the first mounting portion;

wherein at least one other gasket is located between the third swing rod and the fourth swing rod; and

wherein, in the axial direction of the hinge mechanism, under the action of the elastic force of the elastic component, the third swing rod and the fourth swing rod press the at least one other gasket located between the third swing rod and the fourth swing rod toward the second mounting portion.

15 . The hinge mechanism according to claim 14 , wherein, in the axial direction of the hinge mechanism, a first slot is disposed on at least one side surface of the first mounting portion, and the at least one gasket located between the first swing rod and the second swing rod is clamped into the first slot;

wherein, in a direction in which the first swing rod component rotates relative to the main shaft, the at least one gasket located between the first swing rod and the second swing rod is fastened to the first mounting portion;

wherein, in the axial direction of the hinge mechanism, a second slot is disposed on at least one side surface of the second mounting portion, and the at least one gasket located between the third swing rod and the fourth swing rod is clamped into the second slot; and

wherein, in a direction in which the second swing rod component rotates relative to the main shaft, the at least one gasket located between the third swing rod and the fourth swing rod is fastened to the second mounting portion.

16 . The hinge mechanism according to claim 13 , wherein the damping module further comprises a plurality of gaskets, each gasket being sleeved on the first shaft and the second shaft, wherein at least a part of at least one gasket is located between the first swing rod and the second swing rod;

wherein, in the axial direction of the hinge mechanism, under the action of the elastic force of the elastic component, the first swing rod and the second swing rod press the at least a part of the at least one gasket located between the first swing rod and the second swing rod toward the first mounting portion;

wherein at least a part of the at least one gasket is located between the third swing rod and the fourth swing rod; and

wherein, in the axial direction of the hinge mechanism, under the action of the elastic force of the elastic component, the third swing rod and the fourth swing rod press the at least a part of the at least one gasket located between the third swing rod and the fourth swing rod toward the second mounting portion.

17 . An electronic device, comprising:

a first housing;

a second housing;

a hinge mechanism, wherein the first housing and the second housing are respectively disposed on two opposite sides of the hinge mechanism;

a flexible display fastened to the first housing and the second housing and continuously covering the first housing, the second housing, and the hinge mechanism, wherein the hinge mechanism is disposed opposite to a foldable portion of the flexible display;

a first housing fastening bracket fastened to the first housing; and

a second housing fastening bracket fastened to the second housing;

wherein the hinge mechanism comprises a main shaft, a rotating module, a first door plate, and a second door plate;

wherein the rotating module comprises a first rotating component, a second rotating component, the first housing fastening bracket, and the second housing fastening bracket;

wherein the first housing fastening bracket and the second housing fastening bracket are respectively disposed on two opposite sides of the main shaft;

wherein the first rotating component is located between the first housing fastening bracket and the second housing fastening bracket and the second rotating component is located between the first housing fastening bracket and the second housing fastening bracket;

wherein the first rotating component comprises a first support arm, a first connecting member, and a first door plate fastening bracket;

wherein the first support arm is rotatably connected to the main shaft, the first support arm being slidably connected to the first housing fastening bracket;

wherein the first door plate fastening bracket is rotatably connected to the second housing fastening bracket;

wherein the first connecting member is located between the first support arm and the first door plate fastening bracket and is rotatably connected to the first support arm and rotatably connected to the first door plate fastening bracket;

wherein the first connecting member is rotatably connected to the main shaft or the first connecting member is slidably connected to the main shaft;

wherein the second rotating component comprises a second support arm, a second connecting member, and a second door plate fastening bracket;

wherein the second support arm is rotatably connected to the main shaft and is slidably connected to the second housing fastening bracket;

wherein the second door plate fastening bracket is rotatably connected to the first housing fastening bracket;

wherein the second connecting member is located between the second support arm and the second door plate fastening bracket and is rotatably connected to the second support arm and rotatably connected to the second door plate fastening bracket; and

wherein the second connecting member is rotatably connected to the main shaft, or the second connecting member is slidably connected to the main shaft; and

wherein the first door plate is located on a side of the first door plate fastening bracket that faces the flexible display and is fastened to the first door plate fastening bracket; and

wherein the second door plate is located on a side of the second door plate fastening bracket that faces the flexible display and is fastened to the second door plate fastening bracket.

18 . The electronic device according to claim 17 , wherein the first rotating component further comprises a first connecting rod that is located between the first support arm and the first connecting member;

wherein the first support arm is rotatably connected to the first connecting rod;

wherein the first connecting member is rotatably connected to the first connecting rod;

wherein an axis along which the first support arm rotates relative to the first connecting rod is parallel to but not coincident with an axis along which the first connecting member rotates relative to the first connecting rod;

wherein the second rotating component further comprises a second connecting rod that is located between the second support arm and the second connecting member;

wherein the second support arm is rotatably connected to the second connecting rod;

wherein the second connecting member is rotatably connected to the second connecting rod; and

wherein an axis along which the second support arm rotates relative to the second connecting rod is parallel to but not coincident with an axis along which the second connecting member rotates relative to the second connecting rod.

19 . The electronic device according to claim 17 , wherein a first arc-shaped groove is disposed at an end portion of the first door plate fastening bracket that faces the second housing fastening bracket;

wherein a second arc-shaped rotating block is disposed on the second housing fastening bracket, the second arc-shaped rotating block being mounted in the first arc-shaped groove and being capable of sliding along a groove surface of the first arc-shaped groove;

wherein a second arc-shaped groove is disposed at an end portion of the second door plate fastening bracket that faces the first housing fastening bracket; and

wherein a first arc-shaped rotating block is disposed on the first housing fastening bracket, the first arc-shaped rotating block being mounted in the second arc-shaped groove and being capable of sliding along a groove surface of the second arc-shaped groove.

20 . The electronic device according to claim 19 , wherein an axis center at which the second housing fastening bracket rotates relative to the first door plate fastening bracket is located on the side of the first door plate fastening bracket that faces the flexible display, and an axis center at which the first housing fastening bracket rotates relative to the second door plate fastening bracket is located on the side of the second door plate fastening bracket that faces the flexible display.