Folding mechanism and electronic equipment

Abstract

The invention provides a folding mechanism and electronic equipment. The folding mechanism comprises a main shaft, a first fixing frame, a second fixing frame, a first rotating piece, a second rotating piece, a first supporting plate, a second supporting plate and a first connecting arm, the first rotating piece is movably connected with the main shaft and the first fixing frame, the second rotating piece is movably connected with the main shaft and the second fixing frame, and the first supporting plate is movably connected with the first fixing frame and the first rotating piece; the second supporting plate is movably connected with the second fixing frame and the second rotating part, the first connecting arm is movably connected with the first fixing frame and the main shaft, the first connecting arm is provided with a first matching surface, the first supporting plate is provided with a second matching surface, and when the folding mechanism is in a flattened state, the first matching surface of the first connecting arm is in interference fit with the second matching surface of the first supporting plate; therefore, the angle between the first supporting plate and the main shaft is controlled through the acting force between the first matching face and the second matching face, and the angle between the first supporting plate and the main shaft is equal to 180 degrees as much as possible.

Description

Technical Field

[0001] The present application relates to the technical field of foldable electronic products, and particularly relates to a folding mechanism and an electronic device. Background Art

[0002] Folding mobile phones are increasingly popular among users because they have a large display area in the flattened state and are miniaturized in the folded state. The flattened state angle of a folding mobile phone is very important for the overall delicacy of the whole machine. Therefore, it is particularly crucial to set up a folding mechanism that can precisely adjust the flattened state angle. Summary of the Invention

[0003] The present application provides a folding mechanism and an electronic device that can precisely adjust the flattened state angle.

[0004] In a first aspect, the present application provides a folding mechanism. The folding mechanism includes a main shaft, a first fixing frame, a second fixing frame, a first rotating member, a second rotating member, a first support plate, a second support plate, and a first connecting arm. The main shaft is located between the first fixing frame and the second fixing frame; the first rotating member is movably connected to the main shaft and the first fixing frame, and the second rotating member is movably connected to the main shaft and the second fixing frame;

[0005] The first support plate is movably connected to the first fixing frame and the first rotating member, and the second support plate is movably connected to the second fixing frame and the second rotating member. When the folding mechanism is in the unfolded state, the first support plate and the second support plate jointly form a support surface. When the folding mechanism is in the folded state, the first support plate and the second support plate are disposed opposite to each other and enclose a screen accommodating space with the main shaft;

[0006] The first connecting arm is movably connected to the first fixing frame and the main shaft. The first connecting arm has a first mating surface, and the first support plate has a second mating surface. When the folding mechanism is in the flattened state, the first mating surface of the first connecting arm and the second mating surface of the first support plate are in interference fit.

[0007] It can be understood that by setting the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate, a force can be generated on the first support plate in the moving direction. In this way, due to the interference amount set between the first mating surface of the first connecting arm and the second mating surface of the first support plate, a force can be generated between the first mating surface of the first connecting arm and the second mating surface of the first support plate, so as to use this force to control the angle between the first support plate and the main shaft, that is, to control the shape of the first support plate when the folding mechanism is in the flattened state. For example, through the force between the first mating surface of the first connecting arm and the second mating surface of the first support plate, the angle between the first support plate and the main shaft can be made as close as possible to 180°. Thus, when the folding mechanism is applied to an electronic device, it can ensure that the flexible screen is fully flattened, and the appearance consistency of the flexible screen is better, so as to meet the user experience. Therefore, the present application provides a folding mechanism that can accurately adjust the flattened state angle.

[0008] It can be understood that when the folding mechanism is in the flattened state, for different folding mechanisms, the degree of deviation of the angle between the first support plate and the main shaft from 180° is also different. At this time, by adjusting the interference amount between the first mating surface of the first connecting arm and the second mating surface of the first support plate to different degrees, the angle between the first support plate and the main shaft can be adjusted to different degrees, so as to better control the shape of the first support plate when the folding mechanism is in the flattened state. For example, for some folding mechanisms, when the folding mechanism is in the flattened state, the angle between the first support plate and the main shaft is 190°, and the deviation from 180° is relatively large. At this time, the interference amount between the first mating surface of the first connecting arm and the second mating surface of the first support plate can be increased by a large margin, so as to adjust the angle between the first support plate and the main shaft when the folding mechanism is in the flattened state to a large extent, so that the angle between the first support plate and the main shaft can be 180°. For some folding mechanisms, when the folding mechanism is in the flattened state, the angle between the first support plate and the main shaft is 185°, and the deviation from 180° is relatively small. At this time, the interference amount between the first mating surface of the first connecting arm and the second mating surface of the first support plate can be slightly increased, so as to slightly adjust the angle between the first support plate and the main shaft, so that the angle between the first support plate and the main shaft can be 180°.

[0009] In a possible implementation manner, the first connecting arm has a third mating surface, and the first support plate has a fourth mating surface; when the folding mechanism is in the folded state, the third mating surface of the first connecting arm and the fourth mating surface of the first support plate are in interference fit.

[0010] It can be understood that the third mating surface of the first connecting arm and the fourth mating surface of the first support plate can be in interference fit. In this way, due to the interference amount set between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate, a force F can be generated between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate. The force F can cause the first support plate to open. At this time, the screen accommodating space enclosed by the first support plate, the main shaft, and the second support plate can be increased, which is beneficial to improving the reliability of the flexible screen.

[0011] It can be understood that when the folding mechanism is in the folded state, the opening angle of the first support plate can be adjusted to different degrees by adjusting the interference amount between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate to different degrees, so as to better control the size of the screen accommodating space.

[0012] In a possible implementation manner, the first support plate includes a first support plate body, a first abutting block, and a second abutting block;

[0013] The first support plate body includes a first fixing surface, and a first side surface and a second side surface arranged back to back. The first fixing surface is connected between the second side surface and the first side surface. The first fixing surface faces the first fixing frame, and the first side surface faces the main shaft;

[0014] The first abutting block protrudes from the first fixing surface, and the second mating surface is a part of the surface of the first abutting block facing the first side surface;

[0015] The second abutting block protrudes from the first fixing surface, and the fourth mating surface is a part of the surface of the second abutting block facing the second side surface.

[0016] In a possible implementation manner, the first abutting block and the second abutting block are of an integrated structure. In this way, the arrangement of the first abutting block and the second abutting block on the first support plate body is more compact, and the space utilization rate is higher. In addition, the forming process of the first abutting block and the second abutting block is also relatively simple.

[0017] In a possible implementation manner, relative to the second side surface, the second mating surface is arranged closer to the first side surface. In this way, the second mating surface is closer to the main shaft. The overlapping surface formed by the first mating surface of the first connecting arm and the second mating surface of the first support plate is closer to the main shaft. In this way, by slightly increasing the interference amount between the first mating surface of the first connecting arm and the second mating surface of the first support plate, the angle between the first support plate and the main shaft can be adjusted to a greater extent. On the one hand, the shape of the first support plate between the flattened state and the main shaft of the folding mechanism can be better controlled. On the other hand, the accuracy of adjusting the angle between the first support plate and the main shaft when the folding mechanism is in the flattened state is also relatively high.

[0018] In a possible implementation, the second mating surface is arranged at an acute angle with the first fixing surface, and / or the fourth mating surface is arranged at an acute angle with the first fixing surface.

[0019] It can be understood that by arranging the second mating surface at an acute angle with the first fixing surface, the overlapping surface formed by the first mating surface of the first connecting arm and the second mating surface of the first support plate is inclined. In this way, when the first mating surface of the first connecting arm is in interference fit with the second mating surface of the first support plate when the folding mechanism is in the flattened state, the acting force between the first mating surface of the first connecting arm and the second mating surface of the first support plate in the moving direction is greater (for example, the component force in the Z-axis direction is greater), so that the angle between the first support plate and the main shaft when the folding mechanism is in the flattened state can be better controlled, and the shape between the first support plate and the main shaft when the folding mechanism is in the flattened state can be better controlled.

[0020] It can be understood that by arranging the fourth mating surface at an acute angle with the first fixing surface, the overlapping surface formed by the third mating surface of the first connecting arm and the fourth mating surface of the first support plate is inclined. In this way, when the third mating surface of the first connecting arm is in interference fit with the fourth mating surface of the first support plate when the folding mechanism is in the folded state, the component force of the acting force between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate in the width direction of the folding mechanism is greater, so that the opening angle of the first support plate can be made larger. At this time, the accommodating screen space enclosed by the first support plate, the main shaft and the second support plate can be larger, which is more conducive to improving the reliability of the flexible screen.

[0021] In a possible implementation, the first connecting arm is provided with a first through hole. When the folding mechanism is in the flattened state, at least part of the first abutting block is located in the first through hole; the first mating surface of the first connecting arm is part of the hole wall of the first through hole.

[0022] It can be understood that compared with the scheme of arranging a convex block on the first connecting arm and forming the first mating surface on the convex block, in this embodiment, a first through hole is arranged on the first connecting arm, and part of the hole wall of the first through hole is used as the first mating surface. In this way, the volume of the first connecting arm will not be increased to a large extent due to the arrangement of the convex block.

[0023] In a possible implementation, the first connecting arm further has a bearing surface; when the folding mechanism is in the folded state, the bearing surface is arranged opposite to a part of the first support plate. In this way, when the folded folding mechanism falls, the bearing surface of the first connecting arm can support the first support plate, so as to prevent the first support plate from falling towards the direction close to the main shaft, and further avoid the first support plate driving the flexible screen to drop during the falling process, so as to ensure that when the folding mechanism is applied to the folding mechanism, the folding mechanism has better reliability.

[0024] In a possible implementation, the folding mechanism includes a second connecting arm, and the second connecting arm is movably connected to the second fixing frame and the main shaft; the second connecting arm has a second mating surface, and the second support plate has a second mating surface. When the folding mechanism is in the flattened state, the second mating surface of the second connecting arm is in interference fit with the second mating surface of the second support plate.

[0025] It can be understood that by setting the first mating surface of the second connecting arm to be in interference fit with the second mating surface of the second support plate, a force is generated on the second support plate in the moving direction. In this way, due to the interference amount set between the first mating surface of the second connecting arm and the second mating surface of the second support plate, a force can be generated between the first mating surface of the second connecting arm and the second mating surface of the second support plate, thereby using the force to control the angle between the second support plate and the main shaft, that is, to control the shape of the second support plate when the folding mechanism is in the flattened state. For example, through the force between the first mating surface of the second connecting arm and the second mating surface of the second support plate, the angle between the second support plate and the main shaft can be made as close as possible to 180°. Thus, when the folding mechanism is applied to the folding mechanism, it is ensured that the flexible screen is fully flattened, and the appearance consistency of the flexible screen is better, so as to meet the user experience. Therefore, the present application provides a folding mechanism that can accurately adjust the flattened state angle.

[0026] In a possible implementation, the folding mechanism includes a damping member, and the damping member is arranged on the main shaft, and the damping member is used to apply a damping force to the first connecting arm and the second connecting arm.

[0027] It can be understood that when the folding mechanism is in the folded state, the damping member applies a damping force to the first connecting arm and the second connecting arm. In this way, the first connecting arm and the second connecting arm are not easily rotated relative to the main shaft under the action of the damping force, that is, the first connecting arm and the second connecting arm can be in a better locked state. At this time, the stability of the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate is better, and the stability of the interference fit between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate is better.

[0028] In a possible implementation, the first connecting arm includes a first large gear connecting rod, the first large gear connecting rod includes a sliding end and a rotating end, the sliding end of the first large gear connecting rod is slidably connected to the first fixing frame, and the rotating end of the first large gear connecting rod is rotatably connected to the main shaft;

[0029] The second connecting arm includes a second large gear connecting rod, the second large gear connecting rod includes a sliding end and a rotating end, the sliding end of the second large gear connecting rod is slidably connected to the second fixing frame, and the rotating end of the second large gear connecting rod is rotatably connected to the main shaft;

[0030] The folding mechanism further includes a first synchronizing gear, a first positioning member, and a first elastic member;

[0031] The first synchronous gear is rotationally connected to the main shaft, and the rotating end of the first large gear connecting rod meshes with the rotating end of the second large gear connecting rod through the first synchronous gear;

[0032] The first clamping member and the first elastic member are located on the main shaft. The first clamping member is located between the first elastic member and the first synchronous gear. The first clamping member forms a clamping structure with the rotating ends of the first large gear connecting rod and the second large gear connecting rod;

[0033] The first elastic member is in a compressed state, and the elastic force generated by the first elastic member presses the first clamping member towards the rotating ends of the first large gear connecting rod and the second large gear connecting rod.

[0034] It can be understood that the rotating ends of the first large gear connecting rod and the second large gear connecting rod are connected by multiple first synchronous gears, so that the rotation angles of the rotating ends of the first large gear connecting rod and the second large gear connecting rod are the same in magnitude and opposite in direction, so that the rotation actions of the first large gear connecting rod and the second large gear connecting rod relative to the main shaft are synchronized, that is, they approach or move away from each other synchronously.

[0035] It can be understood that by setting the first clamping member to form a clamping structure with the rotating ends of the first large gear connecting rod and the second large gear connecting rod, and using the elastic force generated by the first elastic member to press the first clamping member towards the rotating ends of the first large gear connecting rod and the second large gear connecting rod, a certain resistance is provided during the unfolding or folding process of the folding mechanism, so that the user can experience a better operating feeling of the mechanism.

[0036] In a possible implementation, the folding mechanism further includes a first small gear connecting rod, a second small gear connecting rod, a second synchronous gear, a third clamping member, and a fourth clamping member;

[0037] The sliding end of the first small gear connecting rod is slidably connected to the first fixing bracket, the rotating end of the first small gear connecting rod is rotationally connected to the main shaft, the sliding end of the second small gear connecting rod is slidably connected to the second fixing bracket, and the rotating end of the second small gear connecting rod is rotationally connected to the main shaft;

[0038] The second synchronous gear is located on the side of the first elastic member away from the first clamping member and is rotationally connected to the main shaft. The rotating end of the first small gear connecting rod meshes with the rotating end of the second small gear connecting rod through the second synchronous gear;

[0039] The third clamping member and the fourth clamping member are located on the main shaft. The third clamping member is located between the first elastic member and the second synchronous gear, and the fourth clamping member is located on the side of the second synchronous gear away from the third clamping member. The third clamping member and the fourth clamping member form a clamping structure with the rotating ends of the first small gear connecting rod and the second small gear connecting rod;

[0040] The first elastic member is in a compressed state, and the elastic force generated by the first elastic member also presses the third clamping member against the rotating ends of the first pinion link and the second pinion link.

[0041] It can be understood that the rotating ends of the first pinion link and the second pinion link are connected by a plurality of second synchronous gears, so that the rotation angles of the rotating ends of the first pinion link and the second pinion link are the same in magnitude and opposite in direction, so that the rotational movements of the first pinion link and the second pinion link relative to the main shaft are synchronized, that is, they approach or move away from each other synchronously.

[0042] It can be understood that by setting the third clamping member and the fourth clamping member to form clamping structures with the rotating ends of the first pinion link and the second pinion link respectively, and using the elastic force generated by the first elastic member to also press the third clamping member against the rotating ends of the first pinion link and the second pinion link, a certain resistance is provided during the unfolding or folding process of the folding mechanism, so that the user can experience a better sense of mechanism operation.

[0043] In a possible implementation manner, the first rotating member includes a rotating end and a sliding end. The rotating end of the first rotating member is rotatably connected to the main shaft, and the sliding end of the first rotating member is slidably connected to the first fixing frame;

[0044] The first support plate is slidably connected to the sliding end of the first rotating member and has a relative rotation with the sliding end of the first rotating member;

[0045] The first rotating member includes a first abutting surface, and the first support plate further includes a second abutting surface. When the folding mechanism is in a flattened state, the first abutting surface of the first rotating member and the second abutting surface of the first support plate are in interference fit.

[0046] It can be understood that when the folding mechanism is in the flattened state, the first abutting surface of the first rotating member abuts against the second abutting surface of the first support plate. The first abutting surface of the first rotating member and the second abutting surface of the first support plate form a lapping surface. The first abutting surface of the first rotating member and the second abutting surface of the first support plate can be in interference fit so as to generate a force on the first support plate in the moving direction. In this way, due to the interference amount set between the first abutting surface of the first rotating member and the second abutting surface of the first support plate, a force can be generated between the first abutting surface of the first rotating member and the second abutting surface of the first support plate, thereby using this force to control the angle between the first support plate and the main shaft, that is, to control the shape of the first support plate when the folding mechanism is in the flattened state. For example, through the force between the first abutting surface of the first rotating member and the second abutting surface of the first support plate, the angle between the first support plate and the main shaft can be made as close as possible to 180°, that is, to ensure that the flexible screen is fully flattened as much as possible, and the appearance consistency of the flexible screen is better to meet the user experience.

[0047] In a possible implementation manner, the first support plate includes a first support plate body and a first movable block;

[0048] The first support plate body includes a first fixing surface, and a second side surface and a first side surface which are arranged oppositely. The first fixing surface is connected between the second side surface and the first side surface. The first fixing surface faces the first fixing frame, and the first side surface faces the main shaft;

[0049] The first movable block protrudes from the first fixing surface of the first support plate body, and the first movable block has a first inclined hole;

[0050] The folding mechanism includes a pin shaft. Both ends of the pin shaft are fixed on the sliding end of the first rotating member. The middle part of the pin shaft passes through the first inclined hole. The middle part of the pin shaft slides in the first inclined hole of the first support plate and there is relative rotation;

[0051] The second abutting surface is a partial surface of the outer ring surface of the first movable block facing the first side surface.

[0052] It can be understood that the first movable block can be used not only for connecting with the first rotating member, but also for interference fit with the first mating surface of the first connecting arm. The first movable block has the effect of "serving multiple purposes with one object".

[0053] In a possible implementation, relative to the second side surface, the second abutting surface is disposed closer to the first side surface. At this time, the second abutting surface is disposed closer to the main shaft. The overlapping surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is disposed closer to the main shaft. In this way, by slightly increasing the interference amount between the first abutting surface of the first rotating member and the second abutting surface of the first support plate, the angle between the first support plate and the main shaft can be adjusted to a greater extent. Thus, on the one hand, the shape of the first support plate between the flattened state of the folding mechanism and the main shaft can be better controlled, and on the other hand, the accuracy of adjusting the angle between the first support plate and the main shaft when the folding mechanism is in the flattened state is relatively high. For example, when the overlapping surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is far from the main shaft, it is necessary to set the interference amount between the first abutting surface of the first rotating member and the second abutting surface of the first support plate to 0.5 mm to make the angle between the first support plate and the main shaft 180°. When the overlapping surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is close to the main shaft, setting the interference amount between the first abutting surface of the first rotating member and the second abutting surface of the first support plate to 0.2 mm can make the angle between the first support plate and the main shaft 180°.

[0054] In a possible implementation, the second abutting surface and the first fixing surface are arranged at an acute angle. In this way, the overlapping surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is inclined. In this way, when the first abutting surface of the first rotating member is in interference fit with the second abutting surface of the first support plate when the folding mechanism is in the flattened state, the acting force between the first abutting surface of the first rotating member and the second abutting surface of the first support plate in the moving direction is greater (for example, the component force in the Z-axis direction is greater), so that the angle between the first support plate and the main shaft when the folding mechanism is in the flattened state can be better controlled, and the shape of the first support plate between the flattened state of the folding mechanism and the main shaft can be better controlled.

[0055] In a possible implementation, the main shaft includes a first contact surface, and the first support plate includes a second contact surface; when the folding mechanism is in the flattened state, the first contact surface abuts against the second contact surface. In this way, the main shaft can prevent the first support plate from rotating relative to the shaft, thereby assisting in controlling the angle between the first support plate and the main shaft to avoid the first support plate forming a "V"-shaped angle due to excessive folding, that is, to control the angle between the first support plate and the main shaft at 180° as much as possible.

[0056] In a possible implementation, the first contact surface is a part of the side surface of the main shaft, and the second contact surface is a part of the first side surface of the first support plate.

[0057] In a possible implementation, the first support plate includes a first support plate body and a first extension block; the first support plate body includes a second side surface and a first side surface that are disposed opposite to each other, the first side surface faces the main shaft, and the first extension block protrudes from the first side surface; when the folding mechanism is in a flattened state, the first extension block is disposed opposite to a part of the main shaft. In this way, when the folding mechanism falls, the first extension block can block the first support plate to prevent the first support plate from continuing to fall.

[0058] In a possible implementation, the second rotating member includes a rotating end and a sliding end. The rotating end of the second rotating member is rotatably connected to the main shaft, the sliding end of the second rotating member is slidably connected to the second fixing frame, the second support plate is slidably connected to the sliding end of the second rotating member, and there is a relative rotation between the second support plate and the sliding end of the second rotating member. The second rotating member includes a third abutting surface, the second support plate further includes a fourth abutting surface, and the third abutting surface of the second rotating member is in interference fit with the fourth abutting surface of the second support plate.

[0059] It can be understood that when the folding mechanism is in a flattened state, the third abutting surface of the second rotating member abuts against the fourth abutting surface of the second support plate. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate form a lapping surface. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate can be in interference fit to generate a force in the moving direction of the second support plate. In this way, due to the interference amount setting between the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate, a force can be generated between the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate, so as to control the angle between the second support plate and the main shaft by using the force, that is, to control the shape of the second support plate when the folding mechanism is in a flattened state. For example, through the force between the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate, the angle between the second support plate and the main shaft can be made as equal to 180° as possible, that is, to ensure that the flexible screen is fully flattened as much as possible, and the appearance consistency of the flexible screen is better to meet the user experience.

[0060] In a second aspect, the present application provides an electronic device. The electronic device includes a first housing, a second housing, a flexible screen, and the folding mechanism as described above. The first fixing frame is fixedly connected to the first housing, and the second fixing frame is fixedly connected to the second housing;

[0061] The flexible screen includes a first display area, a second display area, and a third display area that are connected in sequence. The first display area is fixed to the first housing, and the third display area is fixed to the second housing; when the folding mechanism is in an unfolded state, the first support plate and the second support plate support the second display area; when the folding mechanism is in a folded state, the second display area is located in the screen receiving space.

[0062] It can be understood that by setting the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate, a force is generated on the first support plate in the moving direction. In this way, due to the interference amount set between the first mating surface of the first connecting arm and the second mating surface of the first support plate, a force can be generated between the first mating surface of the first connecting arm and the second mating surface of the first support plate, so as to use this force to control the angle between the first support plate and the main shaft, that is, to control the shape of the first support plate when the electronic device is in the flattened state. For example, through the force between the first mating surface of the first connecting arm and the second mating surface of the first support plate, the angle between the first support plate and the main shaft can be made equal to 180° as much as possible, so as to ensure that the flexible screen is completely flattened, and the appearance consistency of the flexible screen is better to meet the user experience. Therefore, the present application provides a folding mechanism that can accurately adjust the flattened state angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a schematic structural diagram of the electronic device provided by the embodiment of the present application in the flattened state;

[0064] Figure 2 is Figure 1 a partial cross-sectional schematic diagram of one embodiment of the electronic device shown in the A-A line;

[0065] Figure 3 is Figure 1 a schematic structural diagram of one embodiment of the electronic device provided by the embodiment of the present application in the folded state;

[0066] Figure 4 is Figure 3 a partial cross-sectional schematic diagram of one embodiment of the electronic device shown in the B-B line;

[0067] Figure 5 is Figure 1 a partial exploded view of the electronic device shown in one embodiment;

[0068] Figure 6 is Figure 5 a partial exploded view of the folding mechanism shown in one embodiment;

[0069] Figure 7 is Figure 6 a schematic structural diagram of the folding mechanism shown in another angle;

[0070] Figure 8 is Figure 7 a partial exploded view of the folding mechanism shown in one embodiment;

[0071] Figure 9 is Figure 7 a partial structural schematic diagram of the main shaft shown in one embodiment;

[0072] Figure 10 is Figure 9 A partial cross-sectional schematic diagram of an embodiment of the main shaft shown at the C-C line;

[0073] Figure 11 is Figure 8 A partial exploded schematic diagram of an embodiment of the end connection assembly shown;

[0074] Figure 12 is Figure 11 A partial exploded schematic diagram of the end connection assembly shown from another angle;

[0075] Figure 13 is Figure 11 An enlarged schematic diagram of the first rotating member and the second rotating member shown;

[0076] Figure 14 is Figure 7 A partial structural schematic diagram of an embodiment of the folding mechanism shown; Figure One ;

[0077] Figure 15 is Figure 7 A partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown at the D-D line;

[0078] Figure 16 is Figure 8 An enlarged schematic diagram of an embodiment of the first support plate shown at M1;

[0079] Figure 17 is Figure 7 A partial structural schematic diagram of an embodiment of the folding mechanism shown; Figure Two ;

[0080] Figure 18 is Figure 17 A structural schematic diagram of the folding mechanism shown from another angle;

[0081] Figure 19 is Figure 17 A partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown at the E-E line;

[0082] Figure 20 is Figure 17 A partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown at the F-F line;

[0083] Figure 21 is Figure 18 A partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown at the G-G line;

[0084] Figure 22Yes Figure 8 An enlarged schematic view of an embodiment of the first support plate at M2;

[0085] Figure 23 Yes Figure 11 A structural schematic view of an embodiment of the first large gear link and the first small gear link;

[0086] Figure 24 Yes Figure 11 A structural schematic view of an embodiment of the first small gear link and the second small gear link;

[0087] Figure 25 Yes Figure 11 A partially exploded schematic view of an embodiment of the damping member;

[0088] Figure 26 Yes Figure 7 A partial structural schematic view of the folding mechanism in an embodiment; Figure Three ;

[0089] Figure 27 Yes Figure 7 A partial structural schematic view of the folding mechanism in an embodiment; Figure Four ;

[0090] Figure 28 Yes Figure 11 A structural schematic view of the first large gear link in another embodiment;

[0091] Figure 29 Yes Figure 28 A structural schematic view of the first large gear link at another angle;

[0092] Figure 30 Yes Figure 8 An enlarged schematic view of an embodiment of the first support plate at M3;

[0093] Figure 31 Yes Figure 27 A partial sectional schematic view of an embodiment of the folding mechanism at the H-H line;

[0094] Figure 32 Yes Figure 3 A partial sectional schematic view of an embodiment of the electronic device at the I-I line;

[0095] Figure 33 Yes Figure 11 A structural schematic view of the first large gear link in another embodiment;

[0096] Figure 34 Yes Figure 3Partial cross-sectional schematic diagram of an embodiment of the electronic device shown at the J-J line. Detailed implementation

[0097] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application.

[0098] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", "connection", and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an electrical connection or a mechanical connection. Among them, "fixed connection" means that the two are connected and the relative position relationship after connection remains unchanged. "Rotational connection" means that the two are connected and can rotate relative to each other after connection. "Sliding connection" means that the two are connected and can slide relative to each other after connection. "Movable connection" means that the two are connected and can move relative to each other after connection. In addition, the integration of two components by an integral molding process means that during the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components by means of reprocessing (such as bonding, welding, snap connection, screw connection). The relative setting of component A and component B can be that the projection C is obtained by projecting component A along the target direction, the projection D is obtained by projecting component B along the target direction, and the projections C and D can at least mostly overlap. In some embodiments, mostly overlapping can be any of the following situations: Projection C is completely located within projection D. Or, projection D is completely located within projection C. Or, projections C and D intersect, and the intersection area of projections C and D accounts for a ratio higher than 50% of projection C or projection D.

[0099] The orientation terms mentioned in the embodiments of the present application, such as "top", "bottom", "inside", "outside", etc., are only references to the directions in the drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0100] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable when appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Multiple" refers to at least two.

[0101] Figure 1 It is a schematic structural diagram of the electronic device 1000 provided in an embodiment of the present application in a flattened state. Figure 2 yes Figure 1 The illustrated electronic device 1000 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at line AA. Figure 3 yes Figure 1 The structure diagram of an embodiment of the electronic device 1000 shown is in a folded state. Figure 4 yes Figure 3 The illustrated electronic device 1000 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at line BB.

[0102] like Figures 1 to 4 As shown, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 may be a foldable device such as a mobile phone, a tablet computer, a personal computer, a laptop computer, a vehicle-mounted device, or a wearable device (such as a smart bracelet). The present application embodiment takes the electronic device 1000 as a mobile phone as an example for detailed description.

[0103] For ease of description, illustratively, the thickness direction of the electronic device 1000 is defined as the Z-axis direction, and the extension direction of the rotation axis of the electronic device 1000 is the Y-axis direction, that is, the width direction of the electronic device 1000 is the Y-axis direction. The direction perpendicular to the Y-axis direction and the Z-axis direction is the X-axis direction, that is, the length direction of the electronic device 1000 is the X-axis. It can be understood that the coordinate system of the electronic device 1000 can also be flexibly set according to specific needs. Exemplarily, the Z-axis direction is defined as the first direction, the X-axis direction is defined as the second direction, and the Y-axis direction is defined as the third direction. In other embodiments, the first direction, the second direction, and the third direction can also be flexibly set according to needs, ensuring that the first direction, the second direction, and the third direction intersect.

[0104] It can be understood that, in this embodiment, the direction of the rotation axis of the electronic device 1000 is the Y-axis direction, that is, the electronic device 1000 can be flattened or folded relative to the Y-axis direction. In this way, when the electronic device 1000 is in the folded state, the size of the electronic device 1000 in the X-axis direction becomes smaller. This embodiment is described by taking "the direction of the rotation axis of the electronic device 1000 is the Y-axis direction" as an example. At this time, the electronic device 1000 can be folded left and right, and the folding and flattening of the electronic device 1000 affect the length dimension of the electronic device 1000. In some other embodiments, the rotation axis of the electronic device 1000 can also be the X-axis direction, that is, the electronic device 1000 can be flattened or folded relative to the X-axis direction. At this time, the electronic device 1000 can be folded up and down, and the folding and flattening of the electronic device 1000 affect the width dimension of the electronic device 1000.

[0105] Figure 5 Yes Figure 1 Partial exploded view of the electronic device 1000 shown in one embodiment. Figure 6 Yes Figure 5 Partial exploded view of the folding mechanism 100 shown in one embodiment.

[0106] Such as Figure 5 And Figure 6As shown, the electronic device 1000 includes a folding mechanism 100, a flexible screen 200, a first housing 300, and a second housing 400. Among them, the flexible screen 200 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, or a quantum dot light-emitting diode (QLED) display screen, etc. In addition, the folding mechanism 100 can be an in-folding mechanism or an out-folding mechanism. The in-folding mechanism can be a folding mechanism that folds at least part of the flexible screen 200 between the first housing 300 and the second housing 400. The out-folding mechanism can be a folding mechanism that folds at least part of the flexible screen 200 to the outside of the first housing 300 and the second housing 400. The specific structure of the folding mechanism 100 is not limited in this application. In this embodiment, the folding mechanism 100 is taken as an example of an in-folding mechanism for description. Exemplarily, the thickness direction of the folding mechanism 100 can be the Z-axis direction, the length direction of the folding mechanism 100 can be the Y-axis direction, and the width direction of the folding mechanism 100 can be the X-axis direction.

[0107] As Figure 5 and Figure 6 shown, exemplarily, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to relatively unfold or fold the first housing 300 and the second housing 400.

[0108] As Figure 1 and Figure 2 shown, when the first housing 300 and the second housing 400 are relatively unfolded to a flattened state, the electronic device 1000 is in a flattened state, and the first housing 300 and the second housing 400 can be at 180°. In other embodiments, the first housing 300 and the second housing 400 may also have a slight deviation from 180°, such as 165°, 177°, or 185°, etc.

[0109] As Figure 3 and Figure 4As shown, when the first housing 300 and the second housing 400 are folded relative to each other to the closed state, the electronic device 1000 is in the folded state. The first housing 300 and the second housing 400 can be closed together, and there may be no large gap between the first housing 300 and the second housing 400. In this way, the appearance experience of the electronic device 1000 is better, and the performance of waterproof, dustproof and foreign object prevention is better. The situation where the first housing 300 and the second housing 400 are closed together includes the situation where they are in contact with each other, and may also include the situation where there is a small gap between them. When there is a small gap between the first housing 300 and the second housing 400, some foreign objects outside the electronic device 1000 will not enter between the first housing 300 and the second housing 400 through this gap.

[0110] Wherein, the first housing 300 and the second housing 400 can also be relatively unfolded or folded to the intermediate state, so that the electronic device 1000 is in the intermediate state, and the intermediate state can be any state between the unfolded state and the folded state.

[0111] Please refer to Figure 5 , and in combination with Figures 1 to 4 As shown, the flexible screen 200 includes a first display area 201, a second display area 202, and a third display area 203. The second display area 202 is connected between the first display area 201 and the third display area 203. Figure 1 , Figure 2 and Figure 5 All schematically distinguish the first display area 201, the second display area 202, and the third display area 203 with dashed lines. The first display area 201 of the flexible screen 200 is fixed to the first housing 300. The third display area 203 is fixed to the second housing 400. During the relative unfolding or folding of the first housing 300 and the second housing 400, the first housing 300 can drive the first display area 201 to move, the second housing 400 can drive the third display area 203 to move, the first display area 201 and the third display area 203 are relatively unfolded or folded, and the second display area 202 can be deformed.

[0112] It can be understood that since the first display area 201 is fixed to the first housing 300 and the third display area 203 is fixed to the second housing 400, when the first housing 300 and the second housing 400 are relatively unfolded or folded, the relative unfolding and folding actions between the first display area 201 and the third display area 203 can be accurately controlled, so that the folding process and movement form of the flexible screen 200 are controllable and the reliability is relatively high.

[0113] Such as Figure 1 and Figure 2As shown, when the electronic device 1000 is in a flattened state, the flexible screen 200 can be in a flattened state. Exemplarily, the first display area 201, the second display area 202, and the third display area 203 of the flexible screen 200 can be at 180°. In other embodiments, the first display area 201, the second display area 202, and the third display area 203 may also have a slight deviation relative to 180°, such as 165°, 177°, or 185°, etc. At this time, the flexible screen 200 has a continuous large-area display region, that is, the flexible screen 200 can achieve large-screen display, and the user experience is better.

[0114] Exemplarily, when the electronic device 1000 is in a flattened state, at least part of the folding mechanism 100 can be used to support the second display area 202. In this way, when the second display area 202 is subjected to pressing force, squeezing force, or impact force, etc., the folding mechanism 100 can be used to improve the compressive resistance and impact resistance of the second display area 202, that is, to ensure that the second display area 202 is not easily dented or the like.

[0115] As Figure 3 and Figure 4 shown, when the electronic device 1000 is in a folded state, the flexible screen 200 is in a folded state. Exemplarily, the first display area 201 and the third display area 203 of the flexible screen 200 approach each other. The second display area 202 is bent. At this time, the flexible screen 200 can be generally in a "water droplet" shape. In addition, the flexible screen 200 is located in the space surrounded by the first housing 300, the folding mechanism 100, and the second housing 400. The first display area 201 and the third display area 203 are located between the first housing 300 and the second housing 400. At this time, the planar size of the electronic device 1000 is small (has a small width dimension), which is convenient for users to carry and store.

[0116] Figure 7 is Figure 6 the schematic structural diagram of the folding mechanism 100 shown at another angle. Figure 8 is Figure 7 the partial exploded view of the folding mechanism 100 shown in one embodiment.

[0117] Please refer to Figure 7 and Figure 8 and, in combination with Figure 5 and Figure 6 shown, the folding mechanism 100 includes a main shaft 1, an end connection assembly 2, a middle connection assembly 3, a first support plate 4, and a second support plate 5. Among them, the length extension direction of the main shaft 1 can be the Y-axis direction.

[0118] Exemplarily, the main shaft 1 is located between the first housing 300 and the second housing 400. The end connection assembly 2 connects the first housing 300, the main shaft 1, and the second housing 400. The number of the end connection assemblies 2 is two, and the two end connection assemblies 2 are arranged at intervals in the length extension direction of the main shaft 1. For example, they can be respectively connected to the top and bottom of the main shaft 1. It can be understood that the end connection assembly 2 can be mainly used to relatively unfold or fold the first housing 300 and the second housing 400. The structure of the end assembly will be specifically introduced below in combination with the relevant drawings, and will not be elaborated here.

[0119] Exemplarily, the structures of the two end connection assemblies 2 are mirror-symmetrical. At this time, since the structures of the two end connection assemblies 2 are the same, the overall structure of the folding mechanism 100 is relatively simple and the processing cost is low. Since the two end connection assemblies 2 are arranged in a mirror-symmetrical manner, during the rotation of the folding mechanism 100, the stress between the two end connection assemblies 2 and the main shaft 1, the first housing 300, and the second housing 400 is relatively uniform, which is beneficial to improving the reliability of the folding mechanism 100. In some other embodiments, the structures of the two end connection assemblies 2 can also be different. In some other embodiments, only one end connection assembly 2 can be provided in the embodiments of the present application, located at one end of the folding mechanism 100. It can be understood that the structure of the folding mechanism 100 can have various combinations and deformation methods, and the embodiments of the present application do not make strict limitations on this.

[0120] Exemplarily, the middle connection assembly 3 connects the first housing 300, the main shaft 1, and the second housing 400. The middle connection assembly 3 is located between the two end connection assemblies 2. The middle connection assembly 3 can be used to assist the end connection assembly 2 to relatively unfold or fold the first housing 300 and the second housing 400. The specific structure of the middle connection assembly 3 is not specifically limited in the present application.

[0121] Please refer to Figure 7 and Figure 8 and in combination with Figure 5 and Figure 6 As shown, the first support plate 4 is located on the side of the main shaft 1 close to the first housing 300. The first support plate 4 connects the main shaft 1 and the first housing 300 through the end connection assembly 2 and the middle connection assembly 3. The specific connection manner between the first support plate 4 and the first housing 300 and the end connection assembly 2 will be specifically described below in combination with the relevant drawings. It will not be elaborated here. In addition, the specific structure of the middle connection assembly 3 is not limited in this embodiment, so the connection manner between the first support plate 4 and the middle connection assembly 3 will depend on the specific structure of the middle connection assembly 3. It will not be elaborated here specifically.

[0122] In addition, the second support plate 5 is located on the side of the main shaft 1 close to the second housing 400. The second support plate 5 connects the second housing 400 and the main shaft 1 through the end connection assembly 2 and the middle connection assembly 3. It can be understood that the second support plate 5 and the first support plate 4 can have the same or similar structures, symmetrical or partially symmetrical structures, or different structures. In this embodiment, the second support plate 5 and the first support plate 4 are symmetrical structures. For the basic design of the component structure of the second support plate 5, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the assembly, the relevant solutions of the first support plate 4 can be referred to. At the same time, it is allowed that there are some differences in the detailed structure or position arrangement of the components between the second support plate 5 and the first support plate 4. Specifically, it will not be elaborated here.

[0123] As Figure 5 and Figure 6 shown, exemplarily, the main shaft 1 includes a first support surface 1a. The first support surface 1a can be a flat surface. The first support plate 4 has a second support surface 4a. The second support surface 4a can be a flat surface. The second support plate 5 has a third support surface 5a. The third support surface 5a can be a flat surface.

[0124] As Figure 2 shown, when the first housing 300 and the second housing 400 are relatively unfolded to the flattened state (i.e., the electronic device 1000 is in the flattened state), the main shaft 1 is located between the first support plate 4 and the second support plate 5. The first support plate 4 and the second support plate 5 open relative to the main shaft 1. The first support surface 1a of the main shaft 1, the second support surface 4a of the first support plate 4, and the third support surface 5a of the second support plate 5 form a support surface 100b. The support surface 100b supports the second display area 202 of the flexible screen 200. Thus, when the second display area 202 is touched, the second display area 202 is not easily damaged or pitted due to external force touch, and thus the reliability of the flexible screen 200 is significantly improved.

[0125] Exemplarily, when the electronic device 1000 is in the flattened state, the first support surface 1a of the main shaft 1, the second support surface 4a of the first support plate 4, and the third support surface 5a of the second support plate 5 can be flush. At this time, the flatness of the flexible screen 200 is better, and the user experience is higher.

[0126] As Figure 4 shown, when the electronic device 1000 is in the folded state, the main shaft 1 is located between the first support plate 4 and the second support plate 5, and the first support plate 4 and the second support plate 5 are on the same side of the main shaft 1. The first support plate 4 and the second support plate 5 approach each other. The main shaft 1, the first support plate 4, and the second support plate 5 can enclose a screen-containing space 100a. The second display area 202 of the flexible screen 200 can be located within the screen-containing space 100a.

[0127] Exemplarily, the end of the first support plate 4 away from the main shaft 1 and the end of the second support plate 5 away from the main shaft 1 are close to each other. In one embodiment, the first support surface 1a of the main shaft 1, the second support surface 4a of the first support plate 4, and the third support surface 5a of the second support plate 5 can enclose a shape with a triangular cross-section. The first support plate 4 and the second support plate 5 can jointly act on the second display area 202 of the flexible screen 200, so that the first display area 201 and the third display area 203 of the flexible screen 200 can be close to each other, and even can be attached to each other, so that the flexible screen 200 is in a "water droplet" shape. In other embodiments, the shape of the cross-section enclosed by the first support surface 1a of the main shaft 1, the second support surface 4a of the first support plate 4, and the third support surface 5a of the second support plate 5 can also be other shapes, and specifically, the present application does not make a limitation.

[0128] It can be understood that whether the electronic device 1000 is in a flattened state or a folded state, the arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 will affect the shape of the second display area 202, the angle between the second display area 202 and the first display area 201, the angle between the second display area 202 and the third display area 203, etc. The arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 plays a key role in the form of the flexible screen 200 when the electronic device 1000 is in a flattened state or a folded state. In the present application, by setting the structures of some components of the folding mechanism 100 (including the main shaft 1, the first support plate 4, and the second support plate 5, etc.) and the cooperation between the components, the arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 is adjusted, so as to better control the form of the flexible screen 200, so that the appearance of the flexible screen 200 better meets the user's needs, that is, the electronic device 1000 has a higher degree of refinement and a better user experience. Among them, the arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 can be the angle between the first support plate 4 and the main shaft 1, the angle between the second support plate 5 and the main shaft 1, the angle between the first support plate 4 and the second support plate 5, etc.

[0129] As Figure 7 and Figure 8 shown, the main shaft 1 includes a first end 10a, a middle part 10b, and a second end 10c connected in sequence. The first end 10a and the second end 10c of the main shaft 1 can be respectively used to connect two end connection components 2. The middle part 10b of the main shaft 1 can be used to connect the middle connection component 3.

[0130] It can be understood that the first end 10a and the second end 10c of the main shaft 1 can be of the same or similar structure, symmetric or partially symmetric structure, or different structures. Exemplarily, the first end 10a and the second end 10c of the main shaft 1 are of symmetric structure. For the basic design of the component structure of the second end 10c of the main shaft 1, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the component, the relevant solutions of the first end 10a of the main shaft 1 can be referred to, while allowing some differences in the detailed structure or position arrangement of the components between the first end 10a and the second end 10c of the main shaft 1. Specifically, it will not be elaborated here. In addition, the structure of the middle part 10b of the base can be determined according to the structure of the middle connection component 3. Specifically, the present application does not make a limitation.

[0131] Figure 9 is Figure 7 A partial structural schematic diagram of the main shaft 1 shown in one embodiment.

[0132] As Figure 8 and Figure 9 shown, in some embodiments, the main shaft 1 includes a base 11, a bottom shell 12, and an upper cover 13. Exemplarily, the number of the upper covers 13 can be three. In other embodiments, the number of the upper covers 13 is not specifically limited.

[0133] Exemplarily, the base 11 includes a top surface 111 and a bottom surface 112. The bottom surface 112 of the base 11 is connected to the top surface 111 of the base 11. The top surface 111 of the base 11 is the surface of the base 11 facing the flexible screen 200. The bottom surface 112 of the base 11 is the surface of the base 11 facing away from the flexible screen 200.

[0134] Exemplarily, the upper cover 13 includes a top surface 131 and a bottom surface 132. The bottom surface 132 of the upper cover 13 is connected to the top surface 131 of the upper cover 13. The top surface 131 of the upper cover 13 is the surface of the upper cover 13 facing the flexible screen 200. The bottom surface 132 of the upper cover 13 is the surface of the upper cover 13 facing away from the flexible screen 200.

[0135] Figure 10 is Figure 9 A partial cross-sectional schematic diagram of the main shaft 1 shown in one embodiment at the C-C line.

[0136] As Figure 9 and Figure 10As shown, the upper cover 13 is fixed to the base 11. It can be understood that the bottom surface 132 of the upper cover 13 faces the top surface 111 of the base 11. A part of the bottom surface 132 of the upper cover 13 is opposite to and spaced from a part of the top surface 111 of the base 11, and an arc-shaped groove 141 is formed therebetween. The top surface 131 of the upper cover 13 and the top surface 111 of the base 11 can be spliced to form the first support surface 1a of the main shaft 1. In one embodiment, the top surface 131 of the upper cover 13 and the top surface 111 of the base 11 can be flush.

[0137] In one embodiment, the base 11 and the upper cover 13 are fixedly connected by fasteners (not shown in the figure). The fasteners can be screws, bolts, rivets, pins, etc.

[0138] As Figure 9 and Figure 10 shown, the bottom shell 12 is fixed to the base 11. It can be understood that the inner surface of the bottom shell 12 faces the bottom surface 112 of the base 11. It can be understood that a plurality of three-dimensional space structures of the base 11 and a plurality of three-dimensional space structures of the bottom shell 12 together form a plurality of moving spaces 142 of the main shaft 1. Exemplarily, the moving spaces 142 with different structures can be used to cooperate with structural members with different structures, so that the connection structure between the main shaft 1 and the plurality of connection components is more flexible and diversified. The moving spaces 142 with the same structure can be used to cooperate with structural members with the same structure, which is beneficial to reducing the design difficulty and cost of the connection between the main shaft 1 and the end connection component 2 and the middle connection component 3. Among them, Figure 10 The reference numerals of some of the moving spaces 142 are schematically marked.

[0139] In some embodiments, some protrusions (not shown in the figure) of the base 11 have a limiting function. These protrusions are located in the moving space 142 and are used to limit the end connection component 2 and the middle connection component 3, preventing the end connection component 2 and the middle connection component 3 from accidentally detaching from the main shaft 1, so as to improve the connection reliability and movement reliability between the end connection component 2, the middle connection component 3 and the main shaft 1, and make the folding mechanism 100 more reliable.

[0140] Figure 11 is Figure 8 a partial exploded view of the end connection component 2 shown in one embodiment. Figure 12 is Figure 11 a partial exploded view of the end connection component 2 shown from another angle.

[0141] As Figure 11 and Figure 12As shown, the end connection assembly 2 includes a first fixing bracket 21, a second fixing bracket 22, a first rotating member 23, a second rotating member 24, a first large gear link 25, a second large gear link 26, a first small gear link 27a, a second small gear link 27b, and a damping member 28.

[0142] It can be understood that both the first large gear link 25 and the first small gear link 27a can serve as the structure of the first connecting arm 20a of the folding mechanism 100. In other words, the first connecting arm 20a can include the first large gear link 25 or the first small gear link 27a. Of course, the first connecting arm 20a can also include a first connecting member at other positions of the folding mechanism 100, where the first connecting member is movably connected to the main shaft 1 and the first fixing bracket 21. The present application does not limit the specific position of the first connecting arm 20a.

[0143] In addition, both the second large gear link 26 and the second small gear link 27b can serve as the structure of the second connecting arm 20b of the end connection assembly 2. In other words, the second connecting arm 20b can include the second large gear link 26 or the second small gear link 27b. Of course, the second connecting arm 20b can also include a second connecting member at other positions of the folding mechanism 100, where the second connecting member is movably connected to the main shaft 1 and the second fixing bracket 22. The present application does not limit the specific position of the second connecting arm 20b.

[0144] In some embodiments, the end connection assembly 2 can include more or fewer structures. For example, the end connection assembly 2 may also not include the first rotating member 23, the second rotating member 24, the first small gear link 27a, or the second small gear link 27b, etc.

[0145] As Figure 11 and Figure 12 shown, the first fixing bracket 21 includes a first fixing bracket body 211, a plurality of through holes 212, a plurality of bumps 213, a plurality of grooves 214, and a plurality of fastening holes 215. The plurality of through holes 212, the plurality of bumps 213, and the plurality of grooves 214 are formed on the first fixing bracket body 211. The plurality of through holes 212, the plurality of bumps 213, and the plurality of grooves 214 are combined with each other to form a first sliding space 216, a second sliding space 217, a third sliding space 218, and an arc space 219 that are spaced apart. In addition, the plurality of fastening holes 215 are formed on the first fixing bracket body 211. Among them, Figure 11 and Figure 12 schematically mark the reference numerals of a partial number of through holes 212, a partial number of bumps 213, a partial number of grooves 214, and a partial number of fastening holes 215.

[0146] It can be understood that the second fixing bracket 22 and the first fixing bracket 21 can have the same structure, a symmetrical structure, a partially symmetrical structure, or different structures, and the present application does not strictly limit this. Exemplarily, the second fixing bracket 22 and the first fixing bracket 21 can be symmetrical structures. Among them, for the basic design of the component structure of the second fixing bracket 22, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the component, the relevant solutions of the first fixing bracket 21 can be referred to, and at the same time, it is allowed that there are some differences in the detailed structure or position arrangement of the components between the second fixing bracket 22 and the first fixing bracket 21.

[0147] Figure 13 is Figure 11 An enlarged schematic view of the first rotating member 23 and the second rotating member 24 shown.

[0148] As Figure 13 shown, the first rotating member 23 includes a rotating end 231 and a sliding end 232 connected to the rotating end 231. Exemplarily, the rotating end 231 of the first rotating member 23 can be arc-shaped. The sliding end 232 of the first rotating member 23 can be in the shape of a slider.

[0149] Exemplarily, a first avoidance hole 2321 is provided at the sliding end 232 of the first rotating member 23. The first avoidance hole 2321 penetrates from the top surface 2322 of the sliding end 232 of the first rotating member 23 to the bottom surface 2323 of the sliding end 232 of the first rotating member 23.

[0150] Exemplarily, the hole wall of the first avoidance hole 2321 includes a first abutting surface 2324. The first abutting surface 2324 is a part of the hole wall of the first avoidance hole 2321 close to the rotating end 231 of the first rotating member 23. The first abutting surface 2324 is inclined towards the rotating end 231 of the first rotating member 23, that is, the first abutting surface 2324 is arranged at an acute angle with the top surface 2322 of the sliding end 232 of the first rotating member 23.

[0151] Figure 14 is Figure 7 A partial structure schematic diagram of the folding mechanism 100 shown in one embodiment. Figure One . Figure 15 is Figure 7 A partial cross-sectional schematic diagram of the folding mechanism 100 shown in one embodiment at the D-D line.

[0152] As Figure 14 and Figure 15 shown, the rotating end 231 of the first rotating member 23 is rotatably connected to the main shaft 1. The sliding end 232 of the first rotating member 23 is slidably connected to the first fixing bracket 21. In other embodiments, the manner in which the first rotating member 23 is connected to the main shaft 1 and the first fixing bracket 21 is not specifically limited.

[0153] Exemplarily, the rotating end 231 of the first rotating member 23 may be located within the arc-shaped groove 141 of the main shaft 1. The rotating end 231 of the first rotating member 23 may rotate within the arc-shaped groove 141 of the main shaft 1. It can be understood that the rotating end 231 of the first rotating member 23 and the main shaft 1 are connected by a virtual axis, and the structure of the rotational connection is relatively simple, occupying a small space, which is beneficial to reducing the thickness of the folding mechanism 100, making it easier to achieve a thin and light design for the folding mechanism 100 and the electronic device 1000. In some other embodiments, the rotating end 231 of the first rotating member 23 and the main shaft 1 may also be connected by a real axis, and the embodiments of the present application do not strictly limit this.

[0154] Exemplarily, at least a part of the sliding end 232 of the first rotating member 23 may be located within the first sliding space 216 of the first fixing bracket 21. The sliding end 232 of the first rotating member 23 may slide within the first sliding space 216 of the first fixing bracket 21.

[0155] As Figures 13 to 15 shown, the second rotating member 24 includes a rotating end 241 and a sliding end 242. The rotating end 241 of the second rotating member 24 is rotationally connected to the main shaft 1. The sliding end 242 of the second rotating member 24 is slidably connected to the second fixing bracket 22. It can be understood that the second rotating member 24 and the first rotating member 23 may have the same structure, a symmetric structure, a partially symmetric structure, or different structures, and the present application does not strictly limit this. Exemplarily, the second rotating member 24 and the first rotating member 23 may have a symmetric structure. Among them, for the basic design of the component structure of the second rotating member 24, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the component, the relevant solutions of the first rotating member 23 can be referred to. For example, it is also allowed that there are some slight differences in the detailed structure or position arrangement of the components between the second rotating member 24 and the first rotating member 23.

[0156] Figure 16 is Figure 8 an enlarged schematic diagram of an implementation manner of the first support plate 4 at M1 as shown.

[0157] As Figure 16 shown, the first support plate 4 includes a first support plate body 41, a first movable block 42, and a first rotating block 43.

[0158] Exemplarily, the first support plate body 41 has a first fixing surface 413. The first fixing surface 413 is disposed opposite to the second support surface 4a. In addition, the first support plate body 41 further includes a right side surface 411 (also referred to as the first side surface 411) and a left side surface 412 (also referred to as the second side surface 412).

[0159] Exemplarily, the first movable block 42 protrudes from the first fixing surface 413. The first movable block 42 has a first inclined hole 414. At this time, the first movable block 42 is generally annular. The outer ring surface of the first movable block 42 includes a second abutting surface 415. The second abutting surface 415 is a partial surface of the outer ring surface of the first movable block 42 that faces the right side surface 411 of the first support plate body 41.

[0160] Exemplarily, relative to the left side surface 412 of the first support plate body 41, the second abutting surface 415 is disposed close to the right side surface 411 of the first support plate body 41.

[0161] Exemplarily, the second abutting surface 415 is inclined in a direction approaching the right side surface 411 of the first support plate body 41. At this time, the second abutting surface 415 is disposed at an acute angle with the first fixing surface 413.

[0162] Exemplarily, the first rotating block 43 protrudes from the first fixing surface 413. The first rotating block 43 can be generally arc-shaped. It can be understood that the first movable block 42 and the first rotating block 43 of the first support plate 4 can jointly form a connecting structure. The first support plate 4 can include a plurality of connecting structures arranged at intervals.

[0163] Figure 17 Yes Figure 7 Partial structural schematic diagram of the folding mechanism 100 shown in one embodiment Figure Two . Figure 18 Yes Figure 17 Structural schematic diagram of the folding mechanism 100 shown in another angle. Figure 19 Yes Figure 17 Partial sectional schematic diagram of the folding mechanism 100 shown in one embodiment at the E-E line.

[0164] As Figures 17 to 19 As shown, the main shaft 1 is located between the first support plate 4 and the second support plate 5. Relative to the left side surface 412 of the first support plate body 41, the right side surface 411 of the first support plate body 41 faces the main shaft 1.

[0165] Exemplarily, the first support plate 4 is also rotatably connected to the first fixing frame 21. Exemplarily, the first rotating block 43 of the first support plate 4 can be located within the arc-shaped space 219 of the first fixing frame 21, and the first rotating block 43 of the first support plate 4 can rotate within the arc-shaped space 219 of the first fixing frame 21. It can be understood that the first support plate 4 and the first fixing frame 21 are connected by a virtual axis, and the structure of the rotational connection is relatively simple, occupying less space, which is beneficial to reducing the thickness of the folding mechanism 100, making it easier to achieve a thin and light design for the folding mechanism 100 and the electronic device 1000. In some other embodiments, the first support plate 4 and the first fixing frame 21 can also be connected by a real axis, and the embodiments of the present application do not strictly limit this. In other implementation manners, the manner in which the first support plate 4 is connected to the first fixing frame 21 is not specifically limited.

[0166] Exemplarily, a part of the first fixing frame 21 is located on one side of the first fixing surface 413 close to the first support plate body 41, and a part is located on one side of the left side surface 412 close to the first support plate body 41. At this time, the first fixing surface 413 of the first support plate body 41 faces the first fixing frame 21.

[0167] Figure 20 Yes Figure 17 It is a partial cross-sectional schematic diagram of an implementation manner of the folding mechanism 100 shown in the figure at the F-F line.

[0168] As Figure 17 And Figure 20 As shown in the figure, exemplarily, the first support plate 4 is slidably connected to the sliding end 232 of the first rotating member 23, and relative rotation can exist between the first support plate 4 and the sliding end 232 of the first rotating member 23. At this time, the first support plate 4 is connected to the main shaft 1 through the first rotating member 23. Exemplarily, the first movable block 42 of the first support plate 4 passes through the first avoidance hole 2321 of the sliding end 232 of the first rotating member 23. The sliding end 232 of the first rotating member 23 can be slidably connected to the first movable block 42 of the first support plate 4 through a pin shaft 44. In addition, relative rotation can exist between the sliding end 232 of the first rotating member 23 and the first movable block 42 of the first support plate 4 through the pin shaft 44. Specifically, the folding mechanism 100 includes a pin shaft 44. Both ends of the pin shaft 44 are fixed on the sliding end 232 of the first rotating member 23. The middle part of the pin shaft 44 passes through the first inclined hole 414 of the first movable block 42 of the first support plate 4. The middle part of the pin shaft 44 can slide and have relative rotation within the first inclined hole 414 of the first support plate 4. In other implementation manners, the manner in which the first support plate 4 is connected to the first rotating member 23 is not specifically limited.

[0169] As Figures 17 to 20As shown, the second support plate 5 is rotatably connected to the second fixing bracket 22. The second support plate 5 is slidably connected to the sliding end 242 of the second rotating member 24, and relative rotation may exist between the second support plate 5 and the sliding end 242 of the second rotating member 24. It can be understood that the second support plate 5 and the first support plate 4 may have the same structure, mirror-symmetric structure, partial mirror-symmetric structure, central-symmetric structure, partial central-symmetric structure, or different structures, and the present application does not strictly limit this. In some embodiments, the second support plate 5 and the first support plate 4 are symmetric structures. For the basic design of the component structure of the second support plate 5, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the component, the relevant solutions of the first support plate 4 can be referred to. At the same time, it is allowed that there are some differences in the detailed structure or position arrangement of the components between the second support plate 5 and the first support plate 4. Details are not elaborated here specifically.

[0170] As Figures 17 to 20 shown, the first fixing bracket 21 is fixed on the first housing 300 (please refer to Figure 6 ). The second fixing bracket 22 is fixed on the second housing 400 (please refer to Figure 6 ). Exemplarily, the first fixing bracket 21 may be connected to the first housing 300 by screws. The second fixing bracket 22 may be connected to the second housing 400 by screws. It can be understood that since the first fixing bracket 21 is fixed on the first housing 300, the second fixing bracket 22 is fixed on the second housing 400, the first rotating member 23 connects the first fixing bracket 21 and the main shaft 1, and the second rotating member 24 connects the second fixing bracket 22 and the main shaft 1. Therefore, the first housing 300 and the second housing 400 can be connected by the first fixing bracket 21, the first rotating member 23, the second rotating member 24, and the second fixing bracket 22. In this way, when the electronic device 1000 switches from the flattened state to the folded state, the first housing 300 and the second housing 400 approach each other. The first housing 300 can drive the first fixing bracket 21 to rotate relative to the main shaft 1 through the first rotating member 23, and the second housing 400 can drive the second fixing bracket 22 to rotate relative to the main shaft 1 through the second rotating member 24. When the electronic device 1000 switches from the folded state to the flattened state, the first housing 300 and the second housing 400 open. The first housing 300 can drive the first fixing bracket 21 to rotate relative to the main shaft 1 through the first rotating member 23, and the second housing 400 can drive the second fixing bracket 22 to rotate relative to the main shaft 1 through the second rotating member 24.

[0171] It can be understood that, as Figures 14 to 15As shown, since the sliding end 232 of the first rotating member 23 is slidably connected to the first fixing bracket 21, and the rotating end 231 of the first rotating member 23 is rotatably connected to the main shaft 1 (exemplarily, the first rotating member 23 and the main shaft 1 are constrained by a virtual shaft), and the sliding end 242 of the second rotating member 24 is slidably connected to the second fixing bracket 22, and the rotating end 241 of the second rotating member 24 is rotatably connected to the main shaft 1 (exemplarily, the second rotating member 24 and the main shaft 1 are constrained by a virtual shaft), during the process of the relative unfolding or folding of the first housing 300 and the second housing 400, the relative movement trajectory between the first fixing bracket 21 and the main shaft 1 can be determined, and the relative movement trajectory between the second fixing bracket 22 and the main shaft 1 can be determined. As Figures 16 to 20 As shown, since the first support plate 4 is rotatably connected to the first fixing bracket 21 (exemplarily, the first support plate 4 and the first fixing bracket 21 are limited by a virtual shaft constraint), the first support plate 4 is slidably connected to the first rotating member 23 and has a relative rotation with the first rotating member 23, and the movement trajectory of the first support plate 4 is restricted by the first fixing bracket 21 and the first rotating member 23. The second support plate 5 is rotatably connected to the second fixing bracket 22 (exemplarily, the second support plate 5 and the second fixing bracket 22 are limited by a virtual shaft constraint), the second support plate 5 is slidably connected to the second rotating member 24 and has a relative rotation with the second rotating member 24, and the movement trajectory of the second support plate 5 is restricted by the second fixing bracket 22 and the second rotating member 24. When the movement trajectories of the first fixing bracket 21 and the second fixing bracket 22 relative to the main shaft 1 are determined, the movement trajectories of the first support plate 4 and the second support plate 5 can also be determined.

[0172] It can be understood that the first support plate 4 and the first rotating member 23 can cooperate with the pin shaft 44 and the first inclined hole 414 to control the unfolding or closing angle of the first support plate 4.

[0173] As Figure 20As shown, when the electronic device 1000 is in a flattened state, the first abutting surface 2324 of the first rotating member 23 abuts against the second abutting surface 415 of the first support plate 4. The first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 form a lapping surface. The first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 can be in interference fit to generate a force on the first support plate 4 in the moving direction. In this way, due to the interference amount set between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, a force can be generated between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, so as to control the angle between the first support plate 4 and the main shaft 1 by using this force, that is, to control the shape of the first support plate 4 when the electronic device 1000 is in a flattened state. For example, through the force between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be made equal to 180° as much as possible, that is, to ensure that the flexible screen 200 is fully flattened as much as possible, and the appearance of the flexible screen 200 is better in consistency to meet the user experience.

[0174] It can be understood that when the electronic device 1000 is in a flattened state, for different folding mechanisms 100, the degree of deviation of the angle between the first support plate 4 and the main shaft 1 from 180° is also different. At this time, by adjusting the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 to different degrees, the angle between the first support plate 4 and the main shaft 1 can be adjusted to different degrees, so as to better control the shape of the first support plate 4 when the electronic device 1000 is in a flattened state. For example, for some folding mechanisms 100, when the electronic device 1000 is in a flattened state, the angle between the first support plate 4 and the main shaft 1 is 190°, and the deviation from 180° is relatively large. At this time, the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 can be increased by a large margin, so as to adjust the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in a flattened state to a large extent, so that the angle between the first support plate 4 and the main shaft 1 can be 180°. For some folding mechanisms 100, when the electronic device 1000 is in a flattened state, the angle between the first support plate 4 and the main shaft 1 is 185°, and the deviation from 180° is relatively small. At this time, the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 can be slightly increased, so as to slightly adjust the angle between the first support plate 4 and the main shaft 1, so that the angle between the first support plate 4 and the main shaft 1 can be 180°.

[0175] In this embodiment, the second abutting surface 415 is a partial surface of the outer circumferential surface of the first movable block 42 that is closer to the right side surface 411. At this time, the second abutting surface 415 is disposed closer to the main shaft 1. The overlapping surface formed by the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is disposed closer to the main shaft 1. In this way, by slightly increasing the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be adjusted to a greater extent. Thus, on the one hand, the form of the first support plate 4 between the flattened state and the main shaft 1 of the electronic device 1000 can be better controlled, and on the other hand, the accuracy of adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state is also relatively high. For example, when the overlapping surface formed by the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is far from the main shaft 1, it is necessary to set the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 to 0.5 mm to make the angle between the first support plate 4 and the main shaft 1 180°. When the overlapping surface formed by the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is close to the main shaft 1, by setting the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 to 0.2 mm, the angle between the first support plate 4 and the main shaft 1 can be made 180°.

[0176] In this embodiment, by setting the first abutting surface 2324 to be inclined in a direction approaching the rotating end 231 of the first rotating member 23, and the second abutting surface 415 to be inclined in a direction approaching the right side surface 411 of the first support plate body 41, the overlapping surface formed by the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is inclined. In this way, when the first abutting surface 2324 of the first rotating member 23 is in interference fit with the second abutting surface 415 of the first support plate 4 when the electronic device 1000 is in the flattened state, the acting force between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 in the moving direction is greater (for example, the component force in the Z-axis direction is greater), so that the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state can be better controlled, and the form of the first support plate 4 between the flattened state and the main shaft 1 of the electronic device 1000 can be better controlled.

[0177] The cooperation relationship between the first rotating member 23 and the first support plate 4 has been specifically introduced in combination with the relevant accompanying drawings above. For the cooperation relationship between the second rotating member 24 and the second support plate 5, reference can be made to the cooperation relationship between the first rotating member 23 and the first support plate 4 (for example, the second rotating member 24 includes a third abutting surface 2424, and the second support plate 5 further includes a fourth abutting surface 515, and the third abutting surface 2424 is in interference fit with the fourth abutting surface 515.), and specific details will not be elaborated here. In this way, when the electronic device 1000 is in a flattened state, the angle between the first support plate 4 and the main shaft 1 can be as close as possible to 180°, and the angle between the second support plate 5 and the main shaft 1 can also be as close as possible to 180°, thereby ensuring to a large extent that the flexible screen 200 is fully flattened, and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0178] Figure 21 is Figure 18 Partial cross-sectional schematic view of an embodiment of the folding mechanism 100 shown at the G-G line.

[0179] As Figure 21 shown, the side surface 113 of the base 11 includes a first contact surface 1131. The right side surface 411 of the first support plate 4 includes a second contact surface 4111.

[0180] When the electronic device 1000 is in a flattened state, the first contact surface 1131 abuts against the second contact surface 4111. In this way, the base 11 can prevent the first support plate 4 from rotating relative to the base 11, and further assist in controlling the angle between the first support plate 4 and the main shaft 1, so as to prevent the first support plate 4 from forming a "V"-shaped angle due to excessive folding, that is, to control the angle between the first support plate 4 and the main shaft 1 at 180° as much as possible.

[0181] Figure 22 is Figure 8 Enlarged schematic view of an embodiment of the first support plate 4 shown at M2.

[0182] As Figure 21 and Figure 22 shown, the first support plate 4 has a first extension block 45. The first extension block 45 protrudes from the right side surface 411 of the first support plate body 41.

[0183] As Figure 21 and Figure 22 shown, when the electronic device 1000 is in a flattened state, the first extension block 45 of the first support plate 4 is disposed opposite to a part of the base 11. In this way, when the electronic device 1000 drops, the first extension block 45 can block the first support plate 4 to prevent the first support plate 4 from continuing to drop.

[0184] Exemplarily, the first extension block 45 of the first support plate 4 does not contact the base 11. In this way, during the flattening or folding process of the electronic device 1000, the first extension block 45 of the first support plate 4 and the base 11 are not likely to interfere with each other.

[0185] It can be understood that the cooperation relationship between the second support plate 5 and the main shaft 1 can also refer to the cooperation relationship between the first support plate 4 and the main shaft 1. Specifically, it will not be elaborated here. In this way, through the mutual cooperation between the second support plate 5 and the main shaft 1, the angle between the second support plate 5 and the main shaft 1 when the electronic device 1000 is in the flattened state can also be assisted in controlling, so as to avoid the second support plate 5 forming a "V"-shaped included angle due to excessive folding.

[0186] Figure 23 Yes Figure 11 It is a schematic structural diagram of an embodiment of the first large gear link 25 and the first small gear link 27a shown.

[0187] As Figure 23 As shown, the first large gear link 25 includes a sliding end 251 and a rotating end 252.

[0188] Exemplarily, the shape of the sliding end 251 of the first large gear link 25 is generally plate-shaped. The rotating end 252 of the first large gear link 25 includes a first gear portion 2521 and a plurality of first protrusions 2522. The first gear portion 2521 may be provided with a rotating shaft hole 2523. The plurality of first protrusions 2522 are located at one end of the first gear portion 2521. The plurality of first protrusions 2522 are arranged in a ring and spaced from each other. The plurality of first protrusions 2522 are arranged around the rotating shaft hole 2523 of the first gear portion 2521. Among them, the first large gear link 25 may be an integrally formed structural member to have higher structural strength.

[0189] Exemplarily, the rotating end 252 of the first large gear link 25 further includes a first rotating shaft portion 2524. The first rotating shaft portion 2524 is located on the side of the first gear portion 2521 away from the first protrusions 2522. The first rotating shaft portion 2524 is spaced from the first gear portion 2521. The first rotating shaft portion 2524 may be provided with a rotating hole 2525. The rotating hole 2525 of the first rotating shaft portion 2524 is disposed opposite to the rotating shaft hole 2523 of the first gear portion 2521.

[0190] Exemplarily, the first large gear link 25 may further include a connecting section 253 connecting the sliding end 251 and the rotating end 252. The connecting section 253 may be bent relative to the sliding end 251 of the first large gear link 25, so that the shape of the first large gear link 25 is more diversified.

[0191] As Figure 23 As shown, the second large gear link 26 includes a sliding end 261 and a rotating end 262.

[0192] Exemplarily, the shape of the sliding end 261 of the second large gear link 26 is generally plate-shaped. The rotating end 262 of the second large gear link 26 includes a second gear portion 2621 and a plurality of second protrusions 2622. The second gear portion 2621 may be provided with a shaft hole 2623. The plurality of second protrusions 2622 are located at one end of the second gear portion 2621. The plurality of second protrusions 2622 are arranged in a ring and spaced apart from each other. The plurality of second protrusions 2622 are arranged around the shaft hole 2623 of the second gear portion 2621. Among them, the second large gear link 26 may be an integrally formed structural member to have higher structural strength.

[0193] Exemplarily, the rotating end 262 of the second large gear link 26 further includes a second shaft portion 2624. The second shaft portion 2624 is located on the side of the second gear portion 2621 away from the second protrusions 2622. The second shaft portion 2624 is spaced apart from the second gear portion 2621. The second shaft portion 2624 may be provided with a rotating hole 2625. The rotating hole 2625 of the second shaft portion 2624 is disposed opposite to the shaft hole 2623 of the second gear portion 2621.

[0194] Exemplarily, the second large gear link 26 may further include a connecting section 263 connecting the sliding end 261 and the rotating end 262. The connecting section 263 may be bent relative to the sliding end 261 of the second large gear link 26 to make the shape of the second large gear link 26 more diversified.

[0195] Figure 24 Yes Figure 11 A schematic structural diagram of an embodiment of the first small gear link 27a and the second small gear link 27b shown.

[0196] As Figure 24 shown, the first small gear link 27a includes a sliding end 271a and a rotating end 272a.

[0197] Exemplarily, the shape of the sliding end 271a of the first small gear link 27a is generally plate-shaped. The rotating end 272a of the first small gear link 27a includes a gear portion 2721a, a plurality of first convex portions 2722a and a plurality of second convex portions 2723a. The gear portion 2721a may be provided with a shaft hole 2724a. The plurality of first convex portions 2722a and the plurality of second convex portions 2723a are located at both ends of the gear portion 2721a in opposite directions. The plurality of first convex portions 2722a are arranged in a ring and spaced apart from each other. The plurality of first convex portions 2722a are arranged around the shaft hole 2523. The plurality of second convex portions 2723a are arranged in a ring and spaced apart from each other. The plurality of second convex portions 2723a are arranged around the shaft hole 2523. Among them, the first small gear link 27a may be an integrally formed structural member to have higher structural strength.

[0198] As Figure 24 shown, the second pinion link 27b includes a sliding end 271b and a rotating end 272b. It can be understood that the second pinion link 27b and the first pinion link 27a may have the same structure, a symmetric structure, a partially symmetric structure, or different structures, and the present application does not strictly limit this. Exemplarily, the second pinion link 27b and the first pinion link 27a may have a symmetric structure. Among them, for the basic design of the component structure of the second pinion link 27b, the design of the connection relationship between components, and the design of the connection relationship between components and other structures outside the component, the relevant solutions of the first pinion link 27a can be referred to, while allowing some differences in the detailed structure or position arrangement of the components between the second pinion link 27b and the first pinion link 27a. Specifically, it will not be elaborated here.

[0199] Figure 25 is Figure 11 a partial exploded view of an embodiment of the damper 28 shown.

[0200] As Figure 25 shown, the damper 28 includes a first synchronous gear 281, a second synchronous gear 282, a first clamping member 283, a second clamping member 284, a third clamping member 285, a fourth clamping member 286, a fixing plate 287, a first elastic member 288, a first transfer shaft 289a, a second transfer shaft 289b, and a third transfer shaft 289c.

[0201] Exemplarily, the number of the first synchronous gears 281 may be multiple, and the multiple first synchronous gears 281 mesh with each other. Exemplarily, the multiple first synchronous gears 281 may be arranged in a row.

[0202] Exemplarily, the number of the second synchronous gears 282 may be multiple, and the multiple second synchronous gears 282 mesh with each other. Exemplarily, the multiple second synchronous gears 282 may be arranged in a row.

[0203] In some embodiments, the first clamping member 283 is located between the first elastic member 288 and the first synchronizing gear 281. The second clamping member 284 is located on the side of the first synchronizing gear 281 away from the first clamping member 283. The second synchronizing gear 282 is located on the side of the first elastic member 288 away from the first clamping member 283. The third clamping member 285 is located between the first elastic member 288 and the second synchronizing gear 282. The fourth clamping member 286 is located on the side of the second synchronizing gear 282 away from the third clamping member 285. The fixing plate 287 is located on the side of the fourth clamping member 286 away from the second synchronizing gear 282. Exemplarily, the second clamping member 284, the first synchronizing gear 281, the first clamping member 283, the first elastic member 288, the third clamping member 285, the second synchronizing gear 282, the fourth clamping member 286, and the fixing plate 287 are arranged in sequence along the length extension direction parallel to the main shaft 1.

[0204] As Figure 25 shown, exemplarily, the first clamping member 283 includes a first clamping plate 2831 and a plurality of first bump groups 2832. The plurality of first bump groups 2832 are fixed to the same side surface of the first clamping plate 2831. The first clamping plate 2831 includes a plurality of first through holes 2833, and the plurality of first through holes 2833 are spaced apart from each other. Two of the first bump groups 2832 are arranged in one-to-one correspondence with two of the first through holes 2833. Each first bump group 2832 may include a plurality of first bumps 2834. The plurality of first bumps 2834 are arranged in a ring and spaced apart from each other. The plurality of first bumps 2834 surround the first through hole 2833, and a clamping groove is formed between two adjacent first bumps 2834. Among them, the first clamping member 283 may be an integrally formed structural member to have a relatively high structural strength.

[0205] As Figure 25 shown, exemplarily, the second clamping member 284 includes a main body portion 2841 and a plurality of rotating shaft blocks 2842. The number of the rotating shaft blocks 2842 may be four. Two of the rotating shaft blocks 2842 are located on one side of the main body portion 2841 and are spaced apart. The other two rotating shaft blocks 2842 are located on the other side of the main body portion 2841 and are spaced apart. Each rotating shaft block 2842 is provided with a second through hole 2843. The second through holes 2843 of the rotating shaft blocks 2842 on the same side are arranged oppositely.

[0206] As Figure 25As shown, exemplarily, the third card member 285 includes a third card plate 2851 and a plurality of second bump groups 2852. The plurality of second bump groups 2852 are fixed to the same side surface of the third card plate 2851. The third card plate 2851 includes a plurality of third through holes 2853, and the plurality of third through holes 2853 are spaced apart from each other. Two of the second bump groups 2852 are arranged in one-to-one correspondence with two of the third through holes 2853. Each second bump group 2852 may include a plurality of second bumps 2854. The plurality of second bumps 2854 are arranged in a ring and spaced apart from each other. The plurality of second bumps 2854 surround the third through hole 2853, and a card slot is formed between two adjacent second bumps 2854. Among them, the third card member 285 may be an integrally formed structural member to have higher structural strength.

[0207] As Figure 25 shown, exemplarily, the fourth card member 286 includes a plurality of fourth through holes 2861 and a plurality of third bump groups 2862. The plurality of fourth through holes 2861 are spaced apart from each other. Two of the third bump groups 2862 are arranged in one-to-one correspondence with two of the fourth through holes 2861. Each third bump group 2862 may include a plurality of third bumps 2863. The plurality of third bumps 2863 are arranged in a ring and spaced apart from each other. The plurality of third bumps 2863 surround the fourth through hole 2861, and a card slot is formed between two adjacent third bumps 2863. Among them, the fourth card member 286 may be an integrally formed structural member to have higher structural strength.

[0208] As Figure 25 shown, exemplarily, the fixing plate 287 may have a plate structure. The fixing plate 287 includes a plurality of fifth through holes 2871, and the plurality of fifth through holes 2871 are spaced apart from each other. Exemplarily, the arrangement shapes and arrangement spacings of the plurality of first through holes 2833, the plurality of second through holes 2843, the plurality of third through holes 2853, the plurality of fourth through holes 2861, and the plurality of fifth through holes 2871 may be the same.

[0209] As Figure 25 shown, exemplarily, the first elastic member 288 includes a plurality of springs.

[0210] Figure 26 is Figure 7 a partial structural schematic diagram of the folding mechanism 100 in an embodiment Figure Three .

[0211] As Figure 25 and Figure 26 shown, and in combination with Figure 23 and Figure 24As shown, the first transfer shaft 289a is inserted into the second clamping member 284, the rotating end 252 of the first large gear link 25, the first clamping member 283, one of the first elastic members 288, the third clamping member 285, the rotating end 272a of the first small gear link 27a, the fourth clamping member 286, and the fixing plate 287. Among them, the first transfer shaft 289a passes through a second through hole 2843 of the second clamping member 284, the rotating hole 2525 and the rotating shaft hole 2523 of the first large gear link 25, a first through hole 2833 of the first clamping member 283, the inner space of one of the first elastic members 288, a third through hole 2853 of the third clamping member 285, the rotating shaft hole 2724a of the first small gear link 27a, a fourth through hole 2861 of the fourth clamping member 286, and a fifth through hole 2871 of the fixing plate 287.

[0212] Among them, the first transfer shaft 289a includes a first end portion 2891a and a second end portion 2892a arranged opposite to each other. The first end portion 2891a of the first transfer shaft 289a is close to the second clamping member 284 and protrudes relative to the second clamping member 284. The second end portion 2892a of the first transfer shaft 289a is close to the fixing plate 287 and protrudes relative to the fixing plate 287. Exemplarily, the first end portion 2891a of the first transfer shaft 289a may be provided with a limiting flange. The limiting flange is located on the side of the second clamping member 284 away from the first clamping member 283. The limiting flange can abut against the second clamping member 284 for limiting. Among them, the second end portion 2892a of the first transfer shaft 289a can be fixedly connected to the fixing plate 287 by welding, bonding or other means. The spring is in a compressed state.

[0213] In some embodiments, the number of the third transfer shafts 289c, the number of the first synchronous gears 281, and the number of the second synchronous gears 282 are the same, and some of the first elastic members 288 among the third transfer shafts 289c, the first synchronous gears 281, the second synchronous gears 282, and the plurality of first elastic members 288 are arranged in one-to-one correspondence. The third transfer shaft 289c is inserted into the second clamping member 284, the first synchronous gear 281, the first clamping member 283, another first elastic member 288, the third clamping member 285, the second synchronous gear 282, the fourth clamping member 286, and the fixing plate 287. Among them, the third transfer shaft 289c sequentially passes through the rotation shaft hole of the first synchronous gear 281, another first through hole 2833 of the first clamping member 283, the inner space of another first elastic member 288, another third through hole 2853 of the third clamping member 285, and the rotation shaft hole of the second synchronous gear 282. Among them, the third transfer shaft 289c includes a first end portion 2891c and a second end portion 2892c arranged back to back. The first end portion 2891c of the third transfer shaft 289c is inserted into another second through hole 2843 of the second clamping member 284 and abuts against the inner wall of the second through hole 2843 for limiting. The second end portion 2892c of the third transfer shaft 289c is inserted into another fourth through hole 2861 of the fourth clamping member 286 and abuts against the inner wall of the fourth through hole 2861 for limiting.

[0214] In some embodiments, the second transfer shaft 289b is inserted into the second clamping member 284, the rotating end 262 of the second large gear link 26, the first clamping member 283, another spring, the third clamping member 285, the second synchronous gear 282, the fourth clamping member 286, and the fixing plate 287. Among them, the second transfer shaft 289b passes through another second through hole 2843 of the second clamping member 284, the rotation shaft hole 2623 of the second large gear link 26, another first through hole 2833 of the first clamping member 283, the inner space of another first elastic member 288, another third through hole 2853 of the third clamping member 285, the rotation shaft hole of the second small gear link 27b, another fourth through hole 2861 of the fourth clamping member 286, and another fifth through hole 2871 of the fixing plate 287.

[0215] Among them, the second transfer shaft 289b includes a first end 2891b and a second end 2892b arranged opposite to each other. The first end 2891b of the second transfer shaft 289b is close to the second clamping member 284 and protrudes relative to the second clamping member 284. The second end 2892b of the second transfer shaft 289b is close to the fixing plate 287 and protrudes relative to the fixing plate 287. Exemplarily, the first end 2891b of the second transfer shaft 289b may be provided with a limiting flange. The limiting flange is located on the side of the second clamping member 284 away from the first clamping member 283. The limiting flange can abut against the second clamping member 284 for limiting. The second end 2892b of the second transfer shaft 289b can be fixedly connected to the fixing plate 287 by welding, bonding or other means. The spring is in a compressed state.

[0216] As Figure 26 shown, and in combination with Figure 23 shown, the rotating end 252 of the first large gear link 25 meshes with the rotating end 262 of the second large gear link 26 through a plurality of first synchronous gears 281. It can be understood that the rotating end 252 of the first large gear link 25 and the rotating end 262 of the second large gear link 26 are connected by a plurality of first synchronous gears 281, so that the rotation angles of the rotating end 252 of the first large gear link 25 and the rotating end 262 of the second large gear link 26 are the same in magnitude and opposite in direction, so that the rotation actions of the first large gear link 25 and the second large gear link 26 relative to the main shaft 1 are synchronized, that is, they approach or move away from each other synchronously.

[0217] As Figure 26 shown, and in combination with Figure 24 shown, the rotating end 272a of the first small gear link 27a meshes with the rotating end 272b of the second small gear link 27b through a plurality of second synchronous gears 282. It can be understood that the rotating end 272a of the first small gear link 27a and the rotating end 272b of the second small gear link 27b are connected by a plurality of second synchronous gears 282, so that the rotation angles of the rotating end 272a of the first small gear link 27a and the rotating end 272b of the second small gear link 27b are the same in magnitude and opposite in direction, so that the rotation actions of the first small gear link 27a and the second small gear link 27b relative to the main shaft 1 are synchronized, that is, they approach or move away from each other synchronously.

[0218] As Figure 26 shown, the first gear portion 2521 of the rotating end 252 of the first large gear link 25 and the second gear portion 2621 of the rotating end 262 of the second large gear link 26 are located between the first clamping member 283 and the second clamping member 284. The rotating end 272a of the first small gear link 27a and the rotating end 272b of the second small gear link 27b are located between the third clamping member 285 and the fourth clamping member 286.

[0219] Please refer to Figure 25 and Figure 26 and in combination with Figure 23 and Figure 24 As shown, a plurality of first protrusions 2522 of the first large gear link 25 and a plurality of first protrusions 2834 of one of the first protrusion groups 2832 are staggered to form a clamping structure, and a plurality of second protrusions 2622 of the second large gear link 26 and a plurality of first protrusions 2834 of the other first protrusion group 2832 are staggered to form a clamping structure.

[0220] In some embodiments, the rotating ends 252 of the first large gear link 25 and the rotating ends 262 of the second large gear link 26 are both clamped to the first clamping member 283 to form a clamping structure, so that the first large gear link 25 and the second large gear link 26 can stay at certain positions.

[0221] In addition, the first elastic member 288 is in a compressed state, and the elastic force generated by the first elastic member 288 presses the first clamping member 283 against the rotating end 252 of the first large gear link 25 and the rotating end 262 of the second large gear link 26. At this time, the first clamping member 283 and the second clamping member 284 cooperate to tightly press the rotating end 252 of the first large gear link 25, the first synchronous gear 281, and the rotating end 262 of the second large gear link 26, so that the clamping structure between the rotating end 252 of the first large gear link 25, the first synchronous gear 281, the rotating end 262 of the second large gear link 26 and the first clamping member 283 and the second clamping member 284 is stable.

[0222] Wherein, when the rotating end 252 of the first large gear link 25, the rotating end 262 of the second large gear link 26, and the first synchronous gear 281 rotate relative to the first clamping member 283 and the second clamping member 284, the relative positions of the plurality of first protrusions 2522 and the plurality of first protrusions 2834 of one of the first protrusion groups 2832 change, and different clamping structures can be formed. The relative positions of the plurality of second protrusions and the plurality of first protrusions 2834 of the other first protrusion group 2832 change, and different clamping structures can be formed.

[0223] In addition, the elastic force generated by the first elastic member 288 also presses the third engaging member 285 against the rotating ends 272a of the first pinion link 27a and the rotating ends 272b of the second pinion link 27b. At this time, the third engaging member 285 and the fourth engaging member 286 cooperate to tightly press the rotating end 272a of the first pinion link 27a, the second synchronous gear 282, and the rotating end 272b of the second pinion link 27b, so that the engaging structure between the rotating end 272a of the first pinion link 27a, the second synchronous gear 282, the rotating end 272b of the second pinion link 27b and the third engaging member 285 and the fourth engaging member 286 is stable.

[0224] In some embodiments, a plurality of first protrusions 2722a of the first pinion link 27a and a plurality of second protrusions 2854 of the second protrusion group 2852 of the third engaging member 285 are arranged in an alternating manner to form an engaging structure. A plurality of second protrusions 2723a of the first pinion link 27a and a plurality of third protrusions 2863 of the third protrusion group 2862 of the fourth engaging member 286 are arranged in an alternating manner to form an engaging structure. In addition, the second pinion link 27b can also form an engaging structure with the third engaging member 285 and the fourth engaging member 286. Regarding the movement relationship between the first pinion link 27a and the third engaging member 285 and the fourth engaging member 286, and the movement relationship between the second pinion link 27b and the third engaging member 285 and the fourth engaging member 286, reference can be made to the movement relationship between the first large gear link 25 and the first engaging member 283. Specifically, it will not be elaborated here.

[0225] As Figure 26 shown, the rotating ends 252 of the first large gear link 25, the rotating ends 262 of the second large gear link 26, the rotating ends 272a of the first pinion link 27a, the rotating ends 272b of the second pinion link 27b, and the damper 28 are all installed in the movable space 142 of the main shaft 1. The sliding ends 251 of the first large gear link 25, the sliding ends 261 of the second large gear link 26, the sliding ends 271a of the first pinion link 27a, and the sliding ends 271b of the second pinion link 27b are all located outside the main shaft 1.

[0226] Exemplarily, both the second clamping member 284 and the fourth clamping member 286 of the damping member 28 are fixed on the base 11 of the main shaft 1. Exemplarily, the second clamping member 284 and the fourth clamping member 286 can be locked on the main shaft 1 through fasteners (such as screws, pins, rivets, etc.). In this way, other components of the damping member 28, the first large gear link 25, the second large gear link 26, the first small gear link 27a, and the second small gear link 27b can all be stably installed on the main shaft 1, and are not prone to shaking or detaching from the main shaft 1, so as to improve the reliability of the folding mechanism 100. Among them, the rotating end 252 of the first large gear link 25 and the rotating end 272a of the first small gear link 27a are rotationally connected to the main shaft 1 through the first transfer shaft 289a, the first synchronous gear 281 and the second synchronous gear 282 are rotationally connected to the main shaft 1 through the third transfer shaft 289c, and the rotating end 262 of the second large gear link 26 and the rotating end 272b of the second small gear link 27b are rotationally connected to the main shaft 1 through the second transfer shaft 289b.

[0227] It can be understood that the number, size, etc. of the first synchronous gear 281 and the second synchronous gear 282 can be designed according to the specific form, size, etc. of the product, and the present application does not make strict limitations on this. In addition, although this embodiment introduces a structure of the damping member 28, the damping member 28 can have various implementation structures. As long as the damping member 28 can be used to provide a damping force to the first large gear link 25, it is within the protection scope of the present application.

[0228] It can be understood that the damping member 28 can apply a damping force to the first large gear link 25, the second large gear link 26, the first small gear link 27a, and the second small gear link 27b, thereby limiting the first large gear link 25, the second large gear link 26, the first small gear link 27a, and the second small gear link 27b to a certain extent. In other words, when the first large gear link 25, the second large gear link 26, the first small gear link 27a, and the second small gear link 27b are not subjected to a large external force, the damping member 28 can make the first large gear link 25, the second large gear link 26, the first small gear link 27a, and the second small gear link 27b maintain a preset relative position relationship, that is, the folding mechanism 100 can stay at a preset angle, and the folding mechanism 100 can maintain a flattened state or a folded state, so as to improve the user experience of the folding mechanism 100 and the electronic device 1000.

[0229] Figure 27 Yes Figure 7 Partial structural schematic diagram of the folding mechanism 100 shown in one embodiment Figure Four .

[0230] As Figure 27As shown, the sliding end 251 of the first large gear link 25 is slidably connected to the first fixed frame 21. Exemplarily, at least a part of the sliding end 251 of the first large gear link 25 can be located within the second sliding space 217 of the first fixed frame 21. The sliding end 251 of the first large gear link 25 can slide within the second sliding space 217 of the first fixed frame 21.

[0231] In addition, the sliding end 261 of the second large gear link 26 is slidably connected to the second fixed frame 22. It can be understood that the connection relationship between the sliding end 261 of the second large gear link 26 and the second fixed frame 22 can refer to the connection relationship between the sliding end 251 of the first large gear link 25 and the first fixed frame 21. Specifically, it will not be elaborated here.

[0232] As Figure 27 shown, the sliding end 271a of the first small gear link 27a is slidably connected to the first fixed frame 21. Exemplarily, at least a part of the sliding end 271a of the first small gear link 27a can be located within the third sliding space 218 of the first fixed frame 21. The sliding end 271a of the first small gear link 27a can slide within the third sliding space 218 of the first fixed frame 21.

[0233] In addition, the sliding end 271b of the second small gear link 27b is slidably connected to the second fixed frame 22. It can be understood that the connection relationship between the sliding end 271b of the second small gear link 27b and the second fixed frame 22 can refer to the connection relationship between the sliding end 271a of the first small gear link 27a and the first fixed frame 21. Specifically, it will not be elaborated here.

[0234] It can be understood that since the first fixed frame 21 is fixed to the first housing 300 (please refer to Figure 6 ), and the second fixed frame 22 is fixed to the second housing 400 (please refer to Figure 6) Thus, the first housing 300 and the second housing 400 can be connected by the first fixing bracket 21, the first large gear link 25, the second large gear link 26, the first small gear link 27a, the second small gear link 27b, and the second fixing bracket 22. In this way, when the electronic device 1000 switches from the flattened state to the folded state, the first housing 300 and the second housing 400 approach each other. The first housing 300 can drive the first fixing bracket 21 to rotate relative to the main shaft 1 through the first large gear link 25 and the first small gear link 27a, and the second housing 400 can drive the second fixing bracket 22 to rotate relative to the main shaft 1 through the second large gear link 26 and the second small gear link 27b. When the electronic device 1000 switches from the folded state to the flattened state, the first housing 300 and the second housing 400 open up. The first housing 300 can drive the first fixing bracket 21 to rotate relative to the main shaft 1 through the first large gear link 25 and the first small gear link 27a, and the second housing 400 can drive the second fixing bracket 22 to rotate relative to the main shaft 1 through the second large gear link 26 and the second small gear link 27b.

[0235] Figure 28 is Figure 11 The schematic structural diagram of the first large gear link 25 shown in another embodiment. Figure 29 is Figure 28 The schematic structural diagram of the first large gear link 25 shown from another angle.

[0236] As Figure 28 and Figure 29 shown, exemplarily, the first large gear link 25 is provided with a first through hole 254. The first through hole 254 penetrates from the top surface 2511 of the sliding end 251 of the first large gear link 25 to the bottom surface 2512 of the sliding end 251 of the first large gear link 25.

[0237] Exemplarily, the hole wall of the first through hole 254 includes a first mating surface 2541. The first mating surface 2541 is the part of the hole wall of the first through hole 254 close to the rotating end 252 of the first large gear link 25.

[0238] Exemplarily, the first mating surface 2541 inclines towards the rotating end 252 of the first large gear link 25, that is, the first mating surface 2541 is set at an obtuse angle with the bottom surface 2512 of the sliding end 251 of the first large gear link 25.

[0239] Figure 30 is Figure 8 The enlarged schematic diagram of an embodiment of the first support plate 4 at M3 shown.

[0240] As Figure 30As shown, the first support plate 4 further includes a first abutting block 46. The first abutting block 46 protrudes from the first fixing surface 413. The first abutting block 46 includes a second mating surface 461. The second mating surface 461 is a partial surface of the outer surface of the first abutting block 46 that faces the right side surface 411 of the first support plate body 41.

[0241] Exemplarily, relative to the left side surface 412 of the first support plate body 41, the second mating surface 461 is disposed close to the right side surface 411 of the first support plate body 41.

[0242] Exemplarily, the second mating surface 461 is inclined in a direction approaching the right side surface 411 of the first support plate body 41. At this time, the second mating surface 461 and the first fixing surface 413 are disposed at an acute angle.

[0243] Figure 31 Yes Figure 27 It is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism 100 at the H-H line.

[0244] Please refer to Figure 31 and in combination with Figures 28 to 30 As shown, when the electronic device 1000 is in a flattened state, at least a part of the first abutting block 46 of the first support plate 4 is located in the first through hole 254 of the first large gear link 25, and the first mating surface 2541 of the first large gear link 25 abuts against the second mating surface 461 of the first support plate 4. The first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 form a lapping surface.

[0245] Exemplarily, the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 can be in interference fit so as to generate a force on the first support plate 4 in the moving direction. In this way, due to the interference amount set between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4, a force can be generated between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4, thereby using this force to control the angle between the first support plate 4 and the main shaft 1, that is, to control the shape of the first support plate 4 when the electronic device 1000 is in a flattened state. For example, through the force between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be made equal to 180° as much as possible, so as to ensure that the flexible screen 200 is fully flattened, and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0246] It can be understood that when the electronic device 1000 is in the flattened state, for different folding mechanisms 100, the amplitude of the angle deviation between the first support plate 4 and the main shaft 1 from 180° is also different. At this time, by adjusting the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 to different degrees, the angle between the first support plate 4 and the main shaft 1 can be adjusted to different degrees, so as to better control the shape of the first support plate 4 when the electronic device 1000 is in the flattened state. For example, for some folding mechanisms 100, when the electronic device 1000 is in the flattened state, the angle between the first support plate 4 and the main shaft 1 is 190°, and the amplitude of the deviation from 180° is relatively large. At this time, the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 can be increased by a large margin, so as to adjust the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state to a greater extent, so that the angle between the first support plate 4 and the main shaft 1 can be 180°. For some folding mechanisms 100, when the electronic device 1000 is in the flattened state, the angle between the first support plate 4 and the main shaft 1 is 185°, and the amplitude of the deviation from 180° is relatively small. At this time, the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 can be slightly increased, so as to slightly adjust the angle between the first support plate 4 and the main shaft 1, so that the angle between the first support plate 4 and the main shaft 1 can be 180°.

[0247] In this embodiment, when the electronic device 1000 is in the flattened state, the damping member 28 applies a damping force to the first large gear link 25. In this way, the first large gear link 25 is not easily rotated relative to the main shaft 1 under the action of the damping force, that is, the first large gear link 25 can be preferably in a locked state. At this time, the stability of the interference fit between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 is relatively good.

[0248] In this embodiment, the second mating surface 461 is disposed close to the right side surface 411 of the first support plate body 41. At this time, the second mating surface 461 is close to the main shaft 1. The overlapping surface formed by the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 is closer to the main shaft 1. In this way, by slightly increasing the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be adjusted to a greater extent. Thus, on the one hand, the shape of the first support plate 4 between the flattened state of the electronic device 1000 and the main shaft 1 can be better controlled, and on the other hand, the accuracy of adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state is relatively high. For example, when the overlapping surface formed by the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 is far from the main shaft 1, the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 needs to be set to 0.5 mm to make the angle between the first support plate 4 and the main shaft 1 180°. When the overlapping surface formed by the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 is close to the main shaft 1, by setting the interference amount between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 to 0.2 mm, the angle between the first support plate 4 and the main shaft 1 can be made 180°.

[0249] In this embodiment, by setting the first mating surface 2541 to be inclined towards the rotating end 252 of the first large gear link 25 and the second mating surface 461 to be inclined towards the right side surface 411 of the first support plate body 41, the overlapping surface formed by the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 is inclined. In this way, when the first mating surface 2541 of the first large gear link 25 is in interference fit with the second mating surface 461 of the first support plate 4 when the electronic device 1000 is in the flattened state, the acting force between the first mating surface 2541 of the first large gear link 25 and the second mating surface 461 of the first support plate 4 in the moving direction is greater (for example, the component force in the Z-axis direction is greater), so that the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state can be better controlled, and the shape of the first support plate 4 between the flattened state of the electronic device 1000 and the main shaft 1 can be better controlled.

[0250] It can be understood that, as Figure 31As shown, the mating relationship between the second support plate 5 and the second large gear link 26 can also refer to the mating relationship between the first support plate 4 and the first large gear link 25 (exemplarily, the second large gear link 26 has a second mating surface 2641, and the second support plate 5 has a second mating surface 561. When the electronic device 1000 is in the flattened state, the second mating surface 2641 of the second large gear link 26 is in interference fit with the second mating surface 561 of the second support plate 5, so that the second support plate 5 generates a force in the moving direction). Specifically, it will not be elaborated here. In this way, through the cooperation between the second support plate 5 and the second large gear link 26, when the electronic device 1000 is in the flattened state, the angle between the second support plate 5 and the main shaft 1 can be as close as possible to 180°, and the angle between the second support plate 5 and the main shaft 1 can also be as close as possible to 180°, so as to ensure to a large extent that the flexible screen 200 is fully flattened, and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0251] It can be understood that the foregoing has specifically introduced the mating relationship between the first large gear link 25 and the first support plate 4, and the mating relationship between the second support plate 5 and the second large gear link 26 when the electronic device 1000 is in the flattened state. In other embodiments, when the electronic device 1000 is in the flattened state, the mating relationship between the first small gear link 27a and the first support plate 4 can also refer to the mating relationship between the first large gear link 25 and the first support plate 4. The mating relationship between the second small gear link 27b and the second support plate 5 can also refer to the mating relationship between the second large gear link 26 and the second support plate 5. Specifically, it will not be elaborated here.

[0252] It can be understood that when the electronic device 1000 is in the flattened state, the mating relationship between the first connecting arm 20a at other positions of the folding mechanism 100 and the first support plate 4 can also refer to the mating relationship between the first large gear link 25 and the first support plate 4. In addition, the mating relationship between the second connecting arm 20b at other positions of the folding mechanism 100 and the second support plate 5 can also refer to the mating relationship between the second large gear link 26 and the second support plate 5. Specifically, it will not be elaborated here.

[0253] It can be understood that in other embodiments, the connection relationship between the first large gear link 25 and the first support plate 4 can also refer to the connection relationship between the first rotating member 23 and the first support plate 4. Specifically, the sliding end 251 of the first large gear link 25 is slidably connected to the first support plate 4, and there is relative rotation between the sliding end 251 of the first large gear link 25 and the first support plate 4. In addition, the connection relationship between the first small gear link 27a and the first support plate 4 can also refer to the connection relationship between the first rotating member 23 and the first support plate 4. Specifically, the sliding end 271a of the first small gear link 27a is slidably connected to the first support plate 4, and there is relative rotation between the sliding end 271a of the first small gear link 27a and the first support plate 4.

[0254] As Figure 29 shown, exemplarily, the hole wall of the first through hole 254 includes a third mating surface 2542. The third mating surface 2542 is a part of the hole wall of the first through hole 254 that is far from the rotating end 252 of the first large gear link 25.

[0255] Exemplarily, the third mating surface 2542 is arranged at an acute angle with the top surface 2511 of the sliding end 251 of the first large gear link 25.

[0256] As Figure 30 shown, the first support plate 4 further includes a second abutting block 47. The second abutting block 47 protrudes from the first fixing surface 413. The second abutting block 47 includes a fourth mating surface 471. The fourth mating surface 471 is a part of the outer surface of the second abutting block 47 that faces the left side surface 412 of the first support plate body 41. Figure 30 The second abutting block 47 and the first abutting block 46 are schematically distinguished by a dashed line.

[0257] Exemplarily, relative to the right side surface 411 of the first support plate body 41, the fourth mating surface 471 is arranged close to the left side surface 412 of the first support plate body 41.

[0258] Exemplarily, the fourth mating surface 471 is inclined in a direction close to the left side surface 412 of the first support plate body 41. At this time, the fourth mating surface 471 is arranged at an acute angle with the first fixing surface 413.

[0259] Exemplarily, the second abutting block 47 is connected to the first abutting block 46, that is, the second abutting block 47 and the first abutting block 46 can form an integral structure. In this way, the arrangement of the first abutting block 46 and the second abutting block 47 on the first support plate body 41 is more compact, and the space utilization rate is higher. In addition, the forming process of the first abutting block 46 and the second abutting block 47 is also relatively simple.

[0260] Figure 32 is Figure 3Partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at the I-I line.

[0261] As Figure 32 shown, when the electronic device 1000 is in the folded state, at least part of the second abutting block 47 of the first support plate 4 is located in the first through hole 254 of the sliding end 251 of the first large gear link 25, and the third mating surface 2542 of the first large gear link 25 abuts against the fourth mating surface 471 of the first support plate 4. The third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 form a lapping surface.

[0262] Exemplarily, the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 can be in interference fit. In this way, due to the interference amount setting between the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4, a force F can be generated between the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4. The component force of the force F in the positive X-axis direction can cause the first support plate 4 to open in the positive X-axis direction. At this time, the screen-containing space 100a surrounded by the first support plate 4, the main shaft 1, and the second support plate 5 can be increased, which is beneficial to improving the reliability of the flexible screen 200. It can be understood that Figure 32 The direction of an embodiment of the force F is schematically shown by a dotted line with an arrow.

[0263] It can be understood that when the electronic device 1000 is in the folded state, the opening angle of the first support plate 4 can be adjusted to different degrees by adjusting the interference amount between the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 to different degrees, so as to better control the size of the screen-containing space 100a.

[0264] It can be understood that when the electronic device 1000 is in the folded state, the damping member 28 exerts a damping force on the first large gear link 25. In this way, the first large gear link 25 is not easily rotated relative to the main shaft 1 under the action of the damping force, that is, the first large gear link 25 can be in a better locked state. At this time, the stability of the interference fit between the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 is better.

[0265] In this embodiment, by setting the third mating surface 2542 to be at an acute angle with the top surface 2511 of the sliding end 251 of the first large gear link 25, and the fourth mating surface 471 to be at an acute angle with the first fixed surface 413, the overlapping surface formed by the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 is inclined. In this way, when the third mating surface 2542 of the first large gear link 25 is in interference fit with the fourth mating surface 471 of the first support plate 4 when the electronic device 1000 is in the folded state, the component force of the acting force between the third mating surface 2542 of the first large gear link 25 and the fourth mating surface 471 of the first support plate 4 in the X-axis direction is greater, so that the first support plate 4 can open at a larger angle in the positive X-axis direction. At this time, the screen accommodating space 100a surrounded by the first support plate 4, the main shaft 1 and the second support plate 5 can be larger, which is more conducive to improving the reliability of the flexible screen 200.

[0266] The foregoing has specifically introduced the mating relationship between the first large gear link 25 and the first support plate 4 when the electronic device 1000 is in the folded state with reference to the relevant drawings. The mating relationship between the second large gear link 26 and the second support plate 5 when the electronic device 1000 is in the folded state can refer to the mating relationship between the first large gear link 25 and the first support plate 4 when the electronic device 1000 is in the folded state, and will not be specifically described here. In this way, when the electronic device 1000 is in the folded state, the first support plate 4 opens in the positive X-axis direction, and the second support plate 5 opens in the negative X-axis direction. At this time, the screen accommodating space 100a surrounded by the first support plate 4, the main shaft 1 and the second support plate 5 can be larger, which is more conducive to improving the reliability of the flexible screen 200.

[0267] It can be understood that the foregoing has specifically introduced the mating relationship between the first large gear link 25 and the first support plate 4, and the mating relationship between the second support plate 5 and the second large gear link 26 when the electronic device 1000 is in the folded state with reference to the relevant drawings. In other embodiments, the mating relationship between the first small gear link 27a and the first support plate 4 when the electronic device 1000 is in the folded state can also refer to the mating relationship between the first large gear link 25 and the first support plate 4. The mating relationship between the second small gear link 27b and the second support plate 5 can also refer to the mating relationship between the second large gear link 26 and the second support plate 5. It will not be specifically described here.

[0268] It can be understood that when the electronic device 1000 is in the folded state, the cooperation relationship between the first connecting arm 20a at other positions of the folding mechanism 100 and the first support plate 4 can also refer to the cooperation relationship between the first large gear connecting rod 25 and the first support plate 4. In addition, the cooperation relationship between the second connecting arm 20b at other positions of the folding mechanism 100 and the second support plate 5 can also refer to the cooperation relationship between the second large gear connecting rod 26 and the second support plate 5. Specifically, it will not be elaborated here.

[0269] Figure 33 is Figure 11 A schematic structural diagram of the first large gear connecting rod 25 shown in another embodiment.

[0270] As Figure 33 shown, exemplarily, a first receiving groove 2543 is provided at the sliding end 251 of the first large gear connecting rod 25. The opening of the first receiving groove 2543 is formed on the bottom surface 2512 of the sliding end 251 of the first large gear connecting rod 25.

[0271] Among them, the first large gear connecting rod 25 includes a bearing surface 2544. The bearing surface 2544 faces away from the rotating end 252 of the first large gear connecting rod 25. The bearing surface 2544 can be a partial groove wall in the first receiving groove 2543 that faces away from the rotating end 252 of the first large gear connecting rod 25.

[0272] Figure 34 is Figure 3 A partial cross-sectional schematic diagram of the electronic device 1000 shown in one embodiment at the J-J line.

[0273] As Figure 34 shown, the first support plate 4 has a second extension block 48. The second extension block 48 protrudes from the right side surface 411 of the first support plate body 41.

[0274] As Figure 33 and Figure 34 shown, when the electronic device 1000 is in the folded state, the second extension block 48 of the first support plate 4 is disposed opposite to the bearing surface 2544 of the first large gear connecting rod 25. In this way, when the folded electronic device 1000 drops, the bearing surface 2544 of the first large gear connecting rod 25 can support the second extension block 48 of the first support plate 4, thereby preventing the first support plate 4 from falling towards the direction close to the main shaft 1, and further avoiding the first support plate 4 driving the flexible screen 200 to drop during the fall, so as to ensure that the electronic device 1000 has better reliability.

[0275] Exemplarily, the second extension block 48 of the first support plate 4 does not contact the bearing surface 2544 of the first large gear link 25. In this way, during the flattening or folding process of the folding mechanism 100, the second extension block 48 of the first support plate 4 and the first large gear link 25 are not likely to interfere with each other.

[0276] It can be understood that the cooperation relationship between the second support plate 5 and the second large gear link 26 can also refer to the cooperation relationship between the first support plate 4 and the first large gear link 25. Specifically, it will not be elaborated here. In this way, through the cooperation between the second support plate 5 and the second large gear link 26, it is also possible to prevent the second support plate 5 from falling in the direction close to the main shaft 1, thereby avoiding the second support plate 5 driving the flexible screen 200 to drop during the falling process, so as to ensure that the electronic device 1000 has better reliability.

[0277] It can be understood that the cooperation relationship between the first large gear link 25 and the first support plate 4, and the cooperation relationship between the second support plate 5 and the second large gear link 26 have been specifically introduced in combination with the relevant drawings when the electronic device 1000 is in the folded state. In other embodiments, when the electronic device 1000 is in the folded state, the cooperation relationship between the first small gear link 27a and the first support plate 4 can also refer to the cooperation relationship between the first large gear link 25 and the first support plate 4. The cooperation relationship between the second small gear link 27b and the second support plate 5 can also refer to the cooperation relationship between the second large gear link 26 and the second support plate 5. Specifically, it will not be elaborated here.

[0278] It should be noted that, without conflict, the embodiments and features in the embodiments of the present application can be combined with each other, and any combination of features in different embodiments is also within the protection scope of the present application. That is to say, the above-described multiple embodiments can also be arbitrarily combined according to actual needs.

[0279] It should be noted that all the above drawings are exemplary illustrations of the present application and do not represent the actual size of the product. And the dimensional proportional relationship between the components in the drawings is not used as a limitation on the actual product of the present application. The above are only some embodiments and implementations of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A folding mechanism (100), characterized in that, it includes a main shaft (1), a first fixing bracket (21), a second fixing bracket (22), a first rotating member (23), a second rotating member (24), a first support plate (4), a second support plate (5) and a first connecting arm (20a). The main shaft (1) is located between the first fixing bracket (21) and the second fixing bracket (22); The first rotating member (23) is movably connected to the main shaft (1) and the first fixing bracket (21), and the second rotating member (24) is movably connected to the main shaft (1) and the second fixing bracket (22); The first support plate (4) is movably connected to the first fixing bracket (21) and the first rotating member (23), and the second support plate (5) is movably connected to the second fixing bracket (22) and the second rotating member (24). When the folding mechanism (100) is in the unfolded state, the first support plate (4) and the second support plate (5) jointly form a support surface (100b). When the folding mechanism (100) is in the folded state, the first support plate (4) and the second support plate (5) are oppositely arranged and enclose a screen accommodating space (100a) with the main shaft (1); The first connecting arm (20a) is movably connected to the first fixing bracket (21) and the main shaft (1). The first connecting arm (20a) has a first mating surface (2541), and the first support plate (4) has a second mating surface (461). When the folding mechanism (100) is in the flattened state, the first mating surface (2541) of the first connecting arm (20a) and the second mating surface (461) of the first support plate (4) are in interference fit.

2. The folding mechanism (100) according to claim 1, characterized in that, the first connecting arm (20a) has a third mating surface (2542), and the first support plate (4) has a fourth mating surface (471); When the folding mechanism (100) is in the folded state, the third mating surface (2542) of the first connecting arm (20a) and the fourth mating surface (471) of the first support plate (4) are in interference fit.

3. The folding mechanism (100) according to claim 2, characterized in that, the first support plate (4) includes a first support plate body (41), a first abutting block (46) and a second abutting block (47); The first support plate body (41) includes a first fixing surface (413) and a first side surface (411) and a second side surface (412) arranged oppositely. The first fixing surface (413) is connected between the second side surface (412) and the first side surface (411). The first fixing surface (413) faces the first fixing bracket (21), and the first side surface (411) faces the main shaft (1); The first abutting block (46) protrudes from the first fixing surface (413), and the second mating surface (461) is a partial surface of the first abutting block (46) facing the first side surface (411); The second abutting block (47) protrudes from the first fixing surface (413), and the fourth mating surface (471) is a partial surface of the second abutting block (47) facing the second side surface (412).

4. The folding mechanism (100) according to claim 3, wherein, the first abutting block (46) and the second abutting block (47) are of an integral structure.

5. The folding mechanism (100) according to claim 3 or 4, wherein, relative to the second side surface (412), the second mating surface (461) is disposed closer to the first side surface (411).

6. The folding mechanism (100) according to any one of claims 3 to 5, wherein, the second mating surface (461) is disposed at an acute angle with the first fixing surface (413), and / or the fourth mating surface (471) is disposed at an acute angle with the first fixing surface (413).

7. The folding mechanism (100) according to any one of claims 3 to 6, wherein, the first connecting arm (20a) is provided with a first through hole (254), and when the folding mechanism (100) is in a flattened state, at least a part of the first abutting block (46) is located within the first through hole (254); the first mating surface (2541) of the first connecting arm (20a) is a part of the hole wall of the first through hole (254).

8. The folding mechanism (100) according to any one of claims 1 to 7, wherein, the first connecting arm (20a) further has a bearing surface (2544); when the folding mechanism (100) is in a folded state, the bearing surface (2544) is disposed opposite to a part of the first support plate (4).

9. The folding mechanism (100) according to any one of claims 1 to 8, wherein, the folding mechanism (100) includes a second connecting arm (20b), and the second connecting arm (20b) is movably connected to the second fixing frame (21) and the main shaft (1); the second connecting arm (20b) has a second mating surface (2641), the second support plate (5) has a second mating surface (561), and when the folding mechanism (100) is in a flattened state, the second mating surface (2641) of the second connecting arm (20b) is in interference fit with the second mating surface (561) of the second support plate (5).

10. The folding mechanism (100) according to claim 9, wherein, the folding mechanism (100) includes a damping member (28), the damping member (28) is disposed on the main shaft (1), and the damping member (28) is used for applying a damping force to the first connecting arm (20a) and the second connecting arm (24).

11. The folding mechanism (100) according to claim 10, wherein, The first connecting arm (20a) includes a first large gear connecting rod (25), the first large gear connecting rod (25) includes a sliding end (251) and a rotating end (252), the sliding end (251) of the first large gear connecting rod (25) is slidably connected to the first fixing frame (21), and the rotating end (252) of the first large gear connecting rod (25) is rotatably connected to the main shaft (1); The second connecting arm (24) includes a second large gear connecting rod (26), the second large gear connecting rod (26) includes a sliding end (261) and a rotating end (262), the sliding end (261) of the second large gear connecting rod (26) is slidably connected to the second fixing frame (22), and the rotating end (262) of the second large gear connecting rod (26) is rotatably connected to the main shaft (1); The folding mechanism (100) further includes a first synchronous gear (281), a first clamping member (283), and a first elastic member (288); The first synchronous gear (281) is rotatably connected to the main shaft (1), and the rotating end (252) of the first large gear connecting rod (25) meshes with the rotating end (262) of the second large gear connecting rod (26) through the first synchronous gear (281); The first clamping member (283) and the first elastic member (288) are located on the main shaft (1), the first clamping member (283) is located between the first elastic member (288) and the first synchronous gear (281), and the first clamping member (283) forms a clamping structure with the rotating end (252) of the first large gear connecting rod (25) and the rotating end (262) of the second large gear connecting rod (26); The first elastic member (288) is in a compressed state, and the elastic force generated by the first elastic member (288) presses the first clamping member (283) towards the rotating end (252) of the first large gear connecting rod (25) and the rotating end (262) of the second large gear connecting rod (26).

12. The folding mechanism (100) according to claim 11, characterized in that, The folding mechanism (100) further includes a first small gear connecting rod (27a), a second small gear connecting rod (27b), a second synchronous gear (282), a third clamping member (285), and a fourth clamping member (286); The sliding end (271a) of the first small gear connecting rod (27a) is slidably connected to the first fixing frame (21), the rotating end (272a) of the first small gear connecting rod (27a) is rotatably connected to the main shaft (1), the sliding end (271b) of the second small gear connecting rod (27b) is slidably connected to the second fixing frame (22), and the rotating end (272b) of the second small gear connecting rod (27b) is rotatably connected to the main shaft (1); The second synchronous gear (282) is located on a side of the first elastic member (288) away from the first clamping member (283), and is rotatably connected to the main shaft (1). The rotating end (272a) of the first pinion link (27a) meshes with the rotating end (272b) of the second pinion link (27b) through the second synchronous gear (282). The third clamping member (285) and the fourth clamping member (286) are located on the main shaft (1). The third clamping member (285) is located between the first elastic member (288) and the second synchronous gear (282). The fourth clamping member (286) is located on a side of the second synchronous gear (282) away from the third clamping member (285). The third clamping member (285), the fourth clamping member (286) and the rotating end (272a) of the first pinion link (27a), the rotating end (272b) of the second pinion link (27b) all form clamping structures. The first elastic member (288) is in a compressed state, and the elastic force generated by the first elastic member (288) also presses the third clamping member (285) towards the rotating end (272a) of the first pinion link (27a) and the rotating end (272b) of the second pinion link (27b).

13. The folding mechanism (100) according to any one of claims 1 to 12, characterized in that, The first rotating member (23) includes a rotating end (231) and a sliding end (232). The rotating end (231) of the first rotating member (23) is rotatably connected to the main shaft (1), and the sliding end (232) of the first rotating member (23) is slidably connected to the first fixing frame (21). The first support plate (4) is slidably connected to the sliding end (232) of the first rotating member (23) and has relative rotation with the sliding end (232) of the first rotating member (23). The first rotating member (23) includes a first abutting surface (2324), and the first support plate (4) further includes a second abutting surface (415). When the folding mechanism (100) is in a flattened state, the first abutting surface (2324) of the first rotating member (23) and the second abutting surface (415) of the first support plate (4) are in interference fit.

14. The folding mechanism (100) according to claim 13, characterized in that, The first support plate (4) includes a first support plate body (41) and a first movable block (42); The first support plate body (41) includes a first fixing surface (413) and a second side surface (412) and a first side surface (411) arranged back to back. The first fixing surface (413) is connected between the second side surface (412) and the first side surface (411). The first fixing surface (413) faces the first fixing frame (21), and the first side surface (411) faces the main shaft (1); The first movable block (42) protrudes from the first fixing surface (413) of the first support plate body (41), and the first movable block (42) has a first inclined hole (414); The folding mechanism (100) includes a pin shaft (44). Both ends of the pin shaft (44) are fixed on the sliding end (232) of the first rotating member (23). The middle part of the pin shaft (44) passes through the first inclined hole (414). The middle part of the pin shaft (44) slides in the first inclined hole (414) of the first support plate (4) and there is relative rotation; The second abutting surface (415) is a part of the outer ring surface of the first movable block (42) facing the first side surface (411).

15. The folding mechanism (100) according to claim 14, wherein, Relative to the second side surface (412), the second abutting surface (415) is arranged close to the first side surface (411).

16. The folding mechanism (100) according to claim 14 or 15, wherein, The second abutting surface (415) is arranged at an acute angle with the first fixing surface 413.

17. The folding mechanism (100) according to any one of claims 1 to 16, wherein, The main shaft (1) includes a first contact surface (1131), and the first support plate (4) includes a second contact surface (4111); When the folding mechanism (100) is in a flattened state, the first contact surface (1131) abuts on the second contact surface (4111).

18. The folding mechanism (100) according to claim 17, wherein, The first contact surface (1131) is a part of the side surface (113) of the main shaft (1), and the second contact surface (4111) is a part of the first side surface (411) of the first support plate (4).

19. The folding mechanism (100) according to any one of claims 1 to 18, wherein, The first support plate (4) includes a first support plate body (41) and a first extension block (45); The first support plate body (41) includes a second side surface (412) and a first side surface (411) arranged back to back. The first side surface (411) faces the main shaft (1), and the first extension block (45) protrudes from the first side surface (411); When the folding mechanism (100) is in a flattened state, the first extension block (45) is arranged opposite to a part of the main shaft (1).

20. An electronic device (1000), wherein, It includes a first housing (300), a second housing (400), a flexible screen (200) and the folding mechanism (100) according to any one of claims 1 to 19. The first fixing frame (21) is fixedly connected to the first housing (300), and the second fixing frame (22) is fixedly connected to the second housing (400); The flexible screen (200) includes a first display area (201), a second display area (202), and a third display area (203) that are connected in sequence. The first display area (201) is fixed to the first housing (300), and the third display area (203) is fixed to the second housing (400); When the folding mechanism (100) is in the unfolded state, the first support plate (4) and the second support plate (5) support the second display area (202); When the folding mechanism (100) is in the folded state, the second display area (202) is located within the screen receiving space (100a).

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