Folding mechanism and electronic device

Abstract

Provided in the present application are a folding mechanism and an electronic device. The folding mechanism comprises a main shaft, a first fixing frame, a second fixing frame, a first rotating member, a second rotating member, a first supporting plate, a second supporting plate and a first connecting arm, wherein the first rotating member is movably connected to the main shaft and the first fixing frame, the second rotating member is movably connected to the main shaft and the second fixing frame, the first supporting plate is movably connected to the first fixing frame and the first rotating member, the second supporting plate is movably connected to the second fixing frame and the second rotating member, and the first connecting arm is movably connected to the first fixing frame and the main shaft; and the first connecting arm is provided with a first matching surface, and the first supporting plate is provided with a second matching surface. When the folding mechanism is in an unfolded state, the first matching surface of the first connecting arm is in interference fit with the second matching surface of the first supporting plate, so as to use the acting force between the first matching surface and the second matching surface to control the angle between the first supporting plate and the main shaft, and the angle between the first supporting plate and the main shaft is equal to 180° to the greatest extent.

Description

Folding mechanism and electronic equipment

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on November 29, 2023, with application number 202311626762.8, and priority to the Chinese patent application with the invention name “Folding mechanism and electronic device”, all contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of foldable electronic products, and in particular to a folding mechanism and electronic equipment. Background Art

[0003] Foldable phones are increasingly popular due to their large display area when flattened and their compact size when folded. The flattening angle of a foldable phone is crucial to its aesthetic appeal, so a folding mechanism that precisely adjusts the flattening angle is crucial. Summary of the Invention

[0004] The present application provides a folding mechanism and electronic device capable of accurately adjusting the flattened angle.

[0005] In a first aspect, the present application provides a folding mechanism. The folding mechanism includes a main shaft, a first fixed frame, a second fixed 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 fixed frame and the second fixed frame; the first rotating member movably connects the main shaft and the first fixed frame; and the second rotating member movably connects the main shaft and the second fixed frame.

[0006] The first support plate is movably connected to the first fixed frame and the first rotating member, and the second support plate is movably connected to the second fixed 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 arranged opposite to each other and enclose a screen space with the main shaft.

[0007] The first connecting arm movably connects 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 a flattened state, the first mating surface of the first connecting arm and the second mating surface of the first support plate are interference fit.

[0008] It can be understood that by setting the first mating surface of the first connecting arm and the second mating surface of the first support plate to have an interference fit, the first support plate can generate a force in the direction of movement. In this way, since the first mating surface of the first connecting arm and the second mating surface of the first support plate have an interference fit, 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 that the force is used 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 a 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 that when the folding mechanism is applied to an electronic device, it is ensured 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 angle.

[0009] It will be appreciated that, when the folding mechanism is in the flattened state, the degree to which the angle between the first support plate and the main axis deviates from 180° varies for different folding mechanisms. In this case, the angle between the first support plate and the main axis can be adjusted to varying degrees by adjusting the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate, thereby better controlling 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 axis is 190°, which deviates significantly from 180°. In this case, the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate can be significantly increased to significantly adjust the angle between the first support plate and the main axis when the folding mechanism is in the flattened state, so that the angle between the first support plate and the main axis is 180°. For some folding mechanisms, when the folding mechanism is in the flattened state, the angle between the first support plate and the main axis is 185°, which deviates slightly from 180°. At this time, the interference between the first mating surface of the first connecting arm and the second mating surface of the first support plate can be slightly increased, thereby slightly adjusting 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°.

[0010] In a possible implementation, 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 a folded state, the third mating surface of the first connecting arm and the fourth mating surface of the first support plate are interference fit.

[0011] It is understandable that the third mating surface of the first connecting arm and the fourth mating surface of the first support plate can have an interference fit. Thus, due to the interference fit 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 expand. At this point, the screen-capacity space enclosed by the first support plate, the main shaft, and the second support plate can be increased, thereby facilitating improved reliability of the flexible screen.

[0012] 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 between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate to different degrees, thereby better controlling the size of the screen space.

[0013] In a possible implementation, the first support plate includes a first support plate body, a first abutting block, and a second abutting block;

[0014] The first support plate body includes a first fixing surface and a first side surface and a second side surface disposed opposite to each other, the first fixing surface is connected between the second side surface and the first side surface, the first fixing surface faces the first fixing bracket, and the first side surface faces the main shaft;

[0015] The first abutting block is convexly arranged on the first fixing surface, and the second matching surface is a portion of the surface of the first abutting block facing the first side surface;

[0016] The second supporting block is protruded from the first fixing surface, and the fourth matching surface is a portion of the surface of the second supporting block facing the second side surface.

[0017] In one possible implementation, the first and second abutting blocks are integrated. This allows for a more compact arrangement of the first and second abutting blocks within the first support plate body, resulting in higher space utilization. Furthermore, the manufacturing process for the first and second abutting blocks is also relatively simple.

[0018] In one possible implementation, the second mating surface is disposed closer to the first side surface relative to the second side surface. In this way, the second mating surface is disposed 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 disposed closer to the main shaft. In this way, by slightly increasing the interference fit 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, thereby, on the one hand, better controlling the shape of the first support plate when the folding mechanism is flattened and between the first support plate and the main shaft, 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 can also be higher.

[0019] In a possible implementation, the second mating surface is disposed at an acute angle to the first fixing surface, and / or the fourth mating surface is disposed at an acute angle to the first fixing surface.

[0020] It is understandable that by setting the second mating surface at an acute angle to the first fixed 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 set at an angle. In this way, when the first mating surface of the first connecting arm is in an interference fit with the second mating surface of the first support plate when the folding mechanism is in the flattened state, the force between the first mating surface of the first connecting arm and the second mating surface of the first support plate in the direction of movement is greater (for example, the component force in the Z-axis direction is greater), thereby better controlling the angle between the first support plate and the main axis when the folding mechanism is in the flattened state, and better controlling the shape of the first support plate when the folding mechanism is in the flattened state and the main axis.

[0021] It can be understood that by setting the fourth mating surface at an acute angle to the first fixed 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 set at an angle. In this way, when the third mating surface of the first connecting arm is in an interference fit with the fourth mating surface of the first support plate when the folding mechanism is in a folded state, the component of the 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, thereby making the first support plate open at a greater angle. At this time, the screen-holding 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.

[0022] In one possible implementation, the first connecting arm is provided with a first through hole, and when the folding mechanism is in a flattened state, at least a portion of the first abutting block is located in the first through hole; the first mating surface of the first connecting arm is a portion of the hole wall of the first through hole.

[0023] It is understood that, compared to the solution of providing a bump on the first connecting arm and forming the first mating surface on the bump, this embodiment provides a first through hole in the first connecting arm and utilizes a portion of the hole wall of the first through hole as the first mating surface. In this way, the first connecting arm will not be significantly increased in size due to the provision of the bump.

[0024] In one possible implementation, the first connecting arm further comprises a bearing surface; when the folding mechanism is in the folded state, the bearing surface is disposed opposite a portion of the first support plate. Thus, when the folding mechanism in the folded state falls, the bearing surface of the first connecting arm can support the first support plate, thereby preventing the first support plate from falling toward the main axis. This further prevents the first support plate from causing the flexible screen to fall during the fall, thereby ensuring that the folding mechanism has better reliability when used in a folding mechanism.

[0025] In one possible implementation, the folding mechanism includes a second connecting arm, which movably connects the second fixed 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 a flattened state, the second mating surface of the second connecting arm and the second mating surface of the second support plate are interference fit.

[0026] It can be understood that by setting the first mating surface of the second connecting arm and the second mating surface of the second support plate to have an interference fit, the second support plate can generate a force in the direction of movement. In this way, since there is an interference fit 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, so that the force is used 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 a 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 equal to 180° as much as possible, so that when the folding mechanism is applied to the folding mechanism, it is ensured 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 angle.

[0027] In a possible implementation, the folding mechanism includes a damping member, which is disposed on the main shaft and is used to apply a damping force to the first connecting arm and the second connecting arm.

[0028] It is understood that when the folding mechanism is in the folded state, the damping member applies a damping force to the first and second connecting arms. Thus, under the action of the damping force, the first and second connecting arms are less likely to rotate relative to the main shaft, effectively locking the first and second connecting arms. At this point, the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate is more stable, and the interference fit between the third mating surface of the first connecting arm and the fourth mating surface of the first support plate is more stable.

[0029] In one 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 fixed frame, and the rotating end of the first large gear connecting rod is rotatably connected to the main shaft;

[0030] 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 fixed frame, and the rotating end of the second large gear connecting rod is rotatably connected to the main shaft;

[0031] The folding mechanism further includes a first synchronous gear, a first latching member and a first elastic member;

[0032] The first synchronous gear is rotatably connected to the main shaft, and the rotating end of the first large gear connecting rod is engaged with the rotating end of the second large gear connecting rod through the first synchronous gear;

[0033] 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, and the first clamping member forms a clamping structure with the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod;

[0034] The first elastic member is in a compressed state, and the elastic force generated by the first elastic member pushes the first positioning member toward the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod.

[0035] It can be understood that the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod are connected through multiple first synchronous gears, so that the rotation angle of the rotating end of the first large gear connecting rod and the rotation angle of the rotating end of the second large gear connecting rod are the same in size and opposite in direction, so that the rotation movements of the first large gear connecting rod and the second large gear connecting rod relative to the main shaft remain synchronized, that is, they approach or move away from each other synchronously.

[0036] It can be understood that by setting the first locking member and the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod to form a locking structure, and utilizing the elastic force generated by the first elastic member to push the first locking member toward the rotating end of the first large gear connecting rod and the rotating end of 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 sense of operation of the mechanism.

[0037] In a possible implementation, the folding mechanism further includes a first pinion connecting rod, a second pinion connecting rod, a second synchronous gear, a third latching member, and a fourth latching member;

[0038] The sliding end of the first pinion connecting rod is slidably connected to the first fixed frame, and the rotating end of the first pinion connecting rod is rotatably connected to the main shaft. The sliding end of the second pinion connecting rod is slidably connected to the second fixed frame, and the rotating end of the second pinion connecting rod is rotatably connected to the main shaft.

[0039] The second synchronous gear is located on a side of the first elastic member away from the first locking member and is rotatably connected to the main shaft. The rotating end of the first pinion connecting rod is engaged with the rotating end of the second pinion connecting rod through the second synchronous gear.

[0040] The third and fourth latching members are located on the main shaft, the third latching member is located between the first elastic member and the second synchronous gear, and the fourth latching member is located on a side of the second synchronous gear away from the third latching member. The third and fourth latching members form a clamping structure with the rotating end of the first pinion connecting rod and the rotating end of the second pinion connecting rod;

[0041] The first elastic member is in a compressed state, and the elastic force generated by the first elastic member also pushes the third positioning member toward the rotating end of the first pinion connecting rod and the rotating end of the second pinion connecting rod.

[0042] It can be understood that the rotating end of the first pinion connecting rod and the rotating end of the second pinion connecting rod are connected by multiple second synchronous gears, so that the rotation angle of the rotating end of the first pinion connecting rod and the rotation angle of the rotating end of the second pinion connecting rod are the same in size and opposite in direction, so that the rotation actions of the first pinion connecting rod and the second pinion connecting rod relative to the main shaft remain synchronized, that is, they approach or move away from each other synchronously.

[0043] It can be understood that by providing the third locking member, the fourth locking member and the rotating end of the first pinion connecting rod and the rotating end of the second pinion connecting rod, a locking structure is formed, and the elastic force generated by the first elastic member is also used to push the third locking member toward the rotating end of the first pinion connecting rod and the rotating end of the second pinion connecting rod, thereby providing a certain resistance during the unfolding or folding process of the folding mechanism, so that the user can experience a better sense of operation of the mechanism.

[0044] In a possible implementation, 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 fixed frame;

[0045] The first support plate is slidably connected to the sliding end of the first rotating member and rotates relative to the sliding end of the first rotating member;

[0046] The first rotating member includes a first abutting surface, and the first supporting 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 supporting plate are interference fit.

[0047] It is understood that when the folding mechanism is in the flattened state, the first abutting surface of the first rotating member abuts 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 an overlapping surface. The first abutting surface of the first rotating member and the second abutting surface of the first support plate can have an interference fit, so that the first support plate generates a force in the direction of movement. In this way, due to the interference fit 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, which can be used to control the angle between the first support plate and the main axis, 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 axis can be minimized to 180°, thereby ensuring that the flexible screen is completely flat as much as possible, and the appearance of the flexible screen is consistent, thereby satisfying the user experience.

[0048] In a possible implementation, the first support plate includes a first support plate body and a first movable block;

[0049] The first support plate body includes a first fixing surface and a second side surface and the first side surface that are arranged opposite to each other, the first fixing surface is connected between the second side surface and the first side surface, the first fixing surface faces the first fixing bracket, and the first side surface faces the main shaft;

[0050] The first movable block is convexly arranged on the first fixed surface of the first support plate body, and the first movable block has a first inclined hole;

[0051] The folding mechanism includes a pin shaft, both ends of which are fixed to the sliding end of the first rotating member, and the middle portion of the pin shaft passes through the first inclined hole, and the middle portion of the pin shaft slides in the first inclined hole of the first support plate and rotates relatively;

[0052] The second abutting surface is a portion of the outer annular surface of the first movable block facing the first side surface.

[0053] It is understandable that the first movable block can be used to connect with the first rotating member and also to have an interference fit with the first mating surface of the first connecting arm. The first movable block has the effect of "one object for multiple uses".

[0054] In one possible implementation, the second abutment surface is positioned closer to the first side surface relative to the second side surface. In this case, the second abutment surface is positioned closer to the main axis. The overlapping surface formed by the first abutment surface of the first rotating member and the second abutment surface of the first support plate is positioned closer to the main axis. By slightly increasing the interference between the first abutment surface of the first rotating member and the second abutment surface of the first support plate, the angle between the first support plate and the main axis can be adjusted to a greater extent. This, on the one hand, allows for better control of the shape of the first support plate when the folding mechanism is flattened and positioned between the first support plate and the main axis, and on the other hand, allows for greater precision in adjusting the angle between the first support plate and the main axis when the folding mechanism is flattened. For example, when the overlapping surface formed by the first abutment surface of the first rotating member and the second abutment surface of the first support plate is relatively far from the main axis, the interference between the first abutment surface of the first rotating member and the second abutment surface of the first support plate needs to be set to 0.5 mm to achieve a 180° angle between the first support plate and the main axis. 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, the interference between the first abutting surface of the first rotating member and the second abutting surface of the first support plate is set to 0.2 mm, so that the angle between the first support plate and the main shaft can be 180°.

[0055] In one possible implementation, the second abutting surface is set at an acute angle to the first fixed surface. 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 set at an angle. In this way, when the first abutting surface of the first rotating member is in an interference fit with the second abutting surface of the first support plate when the folding mechanism is in a flattened state, the force between the first abutting surface of the first rotating member and the second abutting surface of the first support plate in the direction of movement is greater (for example, the component force in the Z-axis direction is greater), thereby better controlling the angle between the first support plate and the main axis when the folding mechanism is in a flattened state, and better controlling the shape of the first support plate when the folding mechanism is flattened and between the main axis.

[0056] In one 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 a flattened state, the first contact surface abuts the second contact surface. This prevents the main shaft from further rotating the first support plate relative to the shaft, thereby helping to control the angle between the first support plate and the main shaft. This prevents the first support plate from over-folding and forming a "V"-shaped angle, essentially maintaining the angle between the first support plate and the main shaft at 180°.

[0057] In a possible implementation, the first contact surface is a portion of a side surface of the main shaft, and the second contact surface is a portion of a first side surface of the first support plate.

[0058] In one 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 disposed opposite each other, the first side surface facing 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 a portion of the main shaft. Thus, if the folding mechanism falls, the first extension block can block the first support plate to prevent it from falling further.

[0059] In one 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 fixed frame, and the second support plate is slidably connected to the sliding end of the second rotating member and rotates relative to the sliding end of the second rotating member. The second rotating member includes a third abutting surface, and the second support plate also includes a fourth abutting surface. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate are interference-fitted.

[0060] It is understood that when the folding mechanism is in the 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 an overlapping surface. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate can have an interference fit, so that the second support plate generates a force in the direction of movement. In this way, due to the interference fit 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, thereby using this force to control the angle between the second support plate and the main axis, 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 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 axis can be minimized to 180°, thus ensuring that the flexible screen is completely flat as much as possible, and the appearance of the flexible screen is consistent, satisfying the user experience.

[0061] 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 described above, wherein a first fixing frame is fixedly connected to the first housing, and a second fixing frame is fixedly connected to the second housing;

[0062] The flexible screen includes a first display area, a second display area and a third display area connected in sequence. The first display area is fixed to the first shell, and the third display area is fixed to the second shell. When the folding mechanism is in the unfolded state, the first support plate and the second support plate support the second display area. When the folding mechanism is in the folded state, the second display area is located in the screen space.

[0063] It can be understood that by setting the first mating surface of the first connecting arm and the second mating surface of the first support plate to have an interference fit, the first support plate can generate a force in the direction of movement. In this way, since there is an 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 between the first mating surface of the first connecting arm and the second mating surface of the first support plate, so that the force is used 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 a 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, thereby ensuring 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 angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] FIG1 is a schematic structural diagram of an electronic device provided in an embodiment of the present application in a flattened state;

[0065] FIG2 is a partial cross-sectional schematic diagram of an embodiment of the electronic device shown in FIG1 taken along line AA;

[0066] FIG3 is a schematic structural diagram of an embodiment of the electronic device shown in FIG1 in a folded state;

[0067] FIG4 is a partial cross-sectional schematic diagram of an embodiment of the electronic device shown in FIG3 taken along line BB;

[0068] FIG5 is a partially exploded view of the electronic device shown in FIG1 in one embodiment;

[0069] FIG6 is a partially exploded view of the folding mechanism shown in FIG5 in one embodiment;

[0070] FIG7 is a schematic structural diagram of the folding mechanism shown in FIG6 at another angle;

[0071] FIG8 is a partially exploded view of the folding mechanism shown in FIG7 in one embodiment;

[0072] FIG9 is a schematic diagram of a partial structure of the main shaft shown in FIG7 in one embodiment;

[0073] FIG10 is a partial cross-sectional schematic diagram of an embodiment of the main shaft shown in FIG9 at line CC;

[0074] FIG11 is a partially exploded schematic diagram of an embodiment of the end connection assembly shown in FIG8 ;

[0075] FIG12 is a partially exploded schematic diagram of the end connection assembly shown in FIG11 at another angle;

[0076] FIG13 is an enlarged schematic diagram of the first rotating member and the second rotating member shown in FIG11;

[0077] FIG14 is a schematic diagram of a partial structure of the folding mechanism shown in FIG7 in one embodiment;

[0078] FIG15 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown in FIG7 at line DD;

[0079] FIG16 is an enlarged schematic diagram of an embodiment of the first support plate shown in FIG8 at position M1;

[0080] FIG17 is a second schematic diagram of a partial structure of the folding mechanism shown in FIG7 in one embodiment;

[0081] FIG18 is a schematic structural diagram of the folding mechanism shown in FIG17 at another angle;

[0082] FIG19 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown in FIG17 at line EE;

[0083] FIG20 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown in FIG17 at line FF;

[0084] FIG21 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown in FIG18 at line GG;

[0085] FIG22 is an enlarged schematic diagram of an embodiment of the first support plate shown in FIG8 at position M2;

[0086] FIG23 is a schematic structural diagram of an embodiment of the first large gear connecting rod and the first small gear connecting rod shown in FIG11;

[0087] FIG24 is a schematic structural diagram of an embodiment of the first and second pinion connecting rods shown in FIG11 ;

[0088] FIG25 is a partially exploded schematic diagram of an embodiment of the damping member shown in FIG11 ;

[0089] FIG26 is a third schematic diagram of a partial structure of the folding mechanism shown in FIG7 in one embodiment;

[0090] FIG27 is a fourth schematic diagram of a partial structure of the folding mechanism shown in FIG7 in one embodiment;

[0091] FIG28 is a schematic structural diagram of another embodiment of the first large gear connecting rod shown in FIG11;

[0092] FIG29 is a schematic structural diagram of the first large gear connecting rod shown in FIG28 at another angle;

[0093] FIG30 is an enlarged schematic diagram of an embodiment of the first support plate shown in FIG8 at position M3;

[0094] FIG31 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism shown in FIG27 at line HH;

[0095] FIG32 is a partial cross-sectional schematic diagram of an embodiment of the electronic device shown in FIG3 taken along line II;

[0096] FIG33 is a schematic structural diagram of the first large gear connecting rod shown in FIG11 in another embodiment;

[0097] FIG34 is a partial cross-sectional schematic diagram of an embodiment of the electronic device shown in FIG3 taken along line JJ. DETAILED DESCRIPTION

[0098] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application.

[0099] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," "connected," and "connected" should be understood broadly. For example, "connected" can mean removable or non-removable; directly or indirectly through an intermediary; electrically or mechanically. "Fixed connection" refers to a connection in which the relative positional relationship remains unchanged after connection. "Rotational connection" refers to a connection in which the connection allows relative rotation. "Sliding connection" refers to a connection in which the connection allows relative sliding. "Moveable connection" refers to a connection in which the connection allows relative movement. Furthermore, two components forming an integrated structure through an integral molding process mean that, during the formation of one of the two components, the component is connected to the other without requiring further processing (such as bonding, welding, snap-fit ​​connection, or screw connection) to connect the two components. Components A and B can be arranged relative to each other so that component A is projected along a target direction to form projection C, and component B is projected along the target direction to form projection D, and projections C and D can at least substantially overlap. In some embodiments, the substantial overlap can be any of the following: projection C is completely within projection D. Alternatively, projection D is completely located within projection C. Alternatively, projection C and projection D intersect each other, and the intersection area of ​​projection C and projection D accounts for more than 50% of projection C or projection D.

[0100] The directional terms mentioned in the embodiments of the present application, such as "top", "bottom", "inner", "outer", etc., are only used to refer to the directions in the drawings. Therefore, the directional terms used are for better and clearer description and understanding of the embodiments of the present application, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the embodiments of the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0101] The terms "first", "second", etc. in the specification and claims of this 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 where 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 the same 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 with each other are in an "or" relationship. "Multiple" means at least two.

[0102] Figure 1 is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present application in a flattened state. Figure 2 is a schematic diagram of a partial cross-section of the electronic device 1000 shown in Figure 1 taken along line AA. Figure 3 is a schematic diagram of the structure of an embodiment of the electronic device 1000 shown in Figure 1 in a folded state. Figure 4 is a schematic diagram of a partial cross-section of the electronic device 1000 shown in Figure 3 taken along line BB.

[0103] As shown in Figures 1 to 4, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 can be a foldable device such as a mobile phone, tablet computer, personal computer, laptop computer, vehicle-mounted device, or wearable device (such as a smart bracelet). The present application embodiment is described in detail using the example of the electronic device 1000 being a mobile phone.

[0104] For ease of description, for example, 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 will be understood that the coordinate system of the electronic device 1000 can also be flexibly set according to specific needs. For example, 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, as long as the first direction, the second direction, and the third direction intersect.

[0105] 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 relatively flattened or folded along the Y-axis direction. In this way, when the electronic device 1000 is in a folded state, the size of the electronic device 1000 in the X-axis direction becomes smaller. This embodiment is explained 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 affects 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 relatively flattened or folded along 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 affects the width dimension of the electronic device 1000.

[0106] Fig. 5 is a partially exploded view of an embodiment of the electronic device 1000 shown in Fig. 1. Fig. 6 is a partially exploded view of an embodiment of the folding mechanism 100 shown in Fig. 5.

[0107] As shown in Figures 5 and 6, the electronic device 1000 includes a folding mechanism 100, a flexible screen 200, a first shell 300, and a second shell 400. The flexible screen 200 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MID) display, a micro organic light-emitting diode (MID) display, or a quantum dot light-emitting diode (QLED) display. In addition, the folding mechanism 100 can be an internal folding mechanism or an external folding mechanism. The internal folding mechanism can be a folding mechanism that folds at least part of the flexible screen 200 between the first shell 300 and the second shell 400. The external folding mechanism can be a folding mechanism that folds at least part of the flexible screen 200 to the outside of the first shell 300 and the second shell 400. This application does not limit the specific structure of the folding mechanism 100. In this embodiment, the folding mechanism 100 is described as an inner folding mechanism. For example, the thickness direction of the folding mechanism 100 may be the Z-axis direction, the length direction of the folding mechanism 100 may be the Y-axis direction, and the width direction of the folding mechanism 100 may be the X-axis direction.

[0108] 5 and 6 , illustratively, 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.

[0109] As shown in Figures 1 and 2, when the first housing 300 and the second housing 400 are relatively unfolded to a flat state, the electronic device 1000 is in a flat state, and the first housing 300 and the second housing 400 can be 180 degrees apart. In other embodiments, the first housing 300 and the second housing 400 can also have a slight deviation from 180 degrees, such as 165 degrees, 177 degrees, or 185 degrees.

[0110] As shown in Figures 3 and 4, when the first shell 300 and the second shell 400 are folded relative to each other to a closed state, the electronic device 1000 is in a folded state, the first shell 300 and the second shell 400 can be closed to each other, and there can be no large gap between the first shell 300 and the second shell 400. In this way, the appearance experience of the electronic device 1000 is better, and the waterproof, dustproof and foreign body-proof performance is better. The situation where the first shell 300 and the second shell 400 are closed includes the situation where the two are against each other, and can also include the situation where there is a small gap between the two. When there is a small gap between the first shell 300 and the second shell 400, some foreign objects outside the electronic device 1000 will not enter between the first shell 300 and the second shell 400 through the gap.

[0111] The first shell 300 and the second shell 400 can also be relatively unfolded or folded to an intermediate state, so that the electronic device 1000 is in an intermediate state. The intermediate state can be any state between the unfolded state and the folded state.

[0112] Referring to Figure 5 , and in conjunction with Figures 1 to 4 , 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. Figures 1 , 2 , and 5 all use dotted lines to schematically distinguish the first display area 201, the second display area 202, and the third display area 203. The first display area 201 of the flexible screen 200 is fixed to the first shell 300. The third display area 203 is fixed to the second shell 400. During the relative expansion or folding of the first shell 300 and the second shell 400, the first shell 300 can drive the first display area 201 to move, and the second shell 400 can drive the third display area 203 to move. The first display area 201 and the third display area 203 are relatively expanded or folded, and the second display area 202 can deform.

[0113] It can be understood that since the first display area 201 is fixed to the first shell 300 and the third display area 203 is fixed to the second shell 400, when the first shell 300 and the second shell 400 are relatively unfolded or folded, the relative unfolding and folding movements 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.

[0114] As shown in Figures 1 and 2, when the electronic device 1000 is in a flattened state, the flexible screen 200 can be in a flattened state. For example, the first display area 201, the second display area 202, and the third display area 203 of the flexible screen 200 can be 180 degrees. In other embodiments, the first display area 201, the second display area 202, and the third display area 203 can also have a slight deviation from 180 degrees, such as 165 degrees, 177 degrees, or 185 degrees. In this case, the flexible screen 200 has a continuous large display area, that is, the flexible screen 200 can achieve large-screen display, and the user experience is better.

[0115] For example, when the electronic device 1000 is in a flattened state, at least a portion of the folding mechanism 100 can be used to support the second display area 202. Thus, when the second display area 202 is subjected to pressing, squeezing, or impact forces, the folding mechanism 100 can be used to improve the second display area 202's ability to withstand pressure and impact, thereby preventing the second display area 202 from denting.

[0116] As shown in Figures 3 and 4, when the electronic device 1000 is in a folded state, the flexible screen 200 is in a folded state. For example, the first display area 201 and the third display area 203 of the flexible screen 200 are close to each other. The second display area 202 is bent. At this time, the flexible screen 200 can be roughly in the shape of a "water drop". In addition, the flexible screen 200 is located in the space surrounded by the first shell 300, the folding mechanism 100 and the second shell 400. The first display area 201 and the third display area 203 are located between the first shell 300 and the second shell 400. At this time, the plane size of the electronic device 1000 is small (with a smaller width dimension), which is convenient for users to carry and store.

[0117] Fig. 7 is a schematic structural diagram of the folding mechanism 100 shown in Fig. 6 at another angle. Fig. 8 is a partial exploded view of the folding mechanism 100 shown in Fig. 7 in one embodiment.

[0118] 7 and 8 , in conjunction with FIG5 and FIG6 , 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. The main shaft 1 may extend in the Y-axis direction.

[0119] Illustratively, the main shaft 1 is located between the first housing 300 and the second housing 400. An end connection assembly 2 connects the first housing 300, the main shaft 1, and the second housing 400. Two end connection assemblies 2 are provided, spaced apart along the length of the main shaft 1. For example, they can be connected to the top and bottom of the main shaft 1, respectively. It will be appreciated that the end connection assemblies 2 can primarily be used to relatively unfold or fold the first housing 300 and the second housing 400. The structure of the end connection assemblies will be described in detail below in conjunction with the relevant drawings and will not be further elaborated here.

[0120] Exemplarily, the structures of the two end connection components 2 are mirror-symmetrical. At this time, since the structures of the two end connection components 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 components 2 are arranged in a mirror-symmetrical manner, during the rotation of the folding mechanism 100, the stress between the two end connection components 2 and the main shaft 1, the first shell 300 and the second shell 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 components 2 may also be different. In some other embodiments, the embodiment of the present application may also only provide one end connection component 2, located at one end of the folding mechanism 100. It can be understood that the structure of the folding mechanism 100 can have a variety of combinations and deformation methods, and the embodiment of the present application does not strictly limit this.

[0121] For example, the middle connecting assembly 3 connects the first housing 300, the main shaft 1, and the second housing 400. The middle connecting assembly 3 is located between the two end connecting assemblies 2. The middle connecting assembly 3 can be used to assist the end connecting assemblies 2 to enable the first housing 300 and the second housing 400 to be relatively unfolded or folded. The specific structure of the middle connecting assembly 3 is not specifically limited in this application.

[0122] Referring to Figures 7 and 8, and in conjunction with Figures 5 and 6, 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 method of the first support plate 4 with the first housing 300 and the end connection assembly 2 will be described in detail below in conjunction with the relevant drawings. No further details will be given here. In addition, this embodiment does not limit the specific structure of the middle connection assembly 3, so the connection method of the first support plate 4 with the middle connection assembly 3 will be determined according to the specific structure of the middle connection assembly 3. No further details will be given here.

[0123] In addition, the second support plate 5 is located on the side of the main shaft 1 close to the second shell 400. The second support plate 5 connects the second shell 400 and the main shaft 1 through the end connection component 2 and the middle connection component 3. It can be understood that the second support plate 5 and the first support plate 4 can be the same or similar structure, symmetrical or partially symmetrical structure, or different structure. In this embodiment, the second support plate 5 and the first support plate 4 are symmetrical structures. The basic design of the component structure of the second support plate 5, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the components can all refer to the relevant scheme of the first support plate 4. At the same time, the second support plate 5 and the first support plate 4 are allowed to be slightly different in the detailed structure or position arrangement of the components. The details will not be repeated here.

[0124] As shown in Figures 5 and 6, the spindle 1 includes, for example, a first support surface 1a. The first support surface 1a can be a plane. The first support plate 4 has a second support surface 4a. The second support surface 4a can be a plane. The second support plate 5 has a third support surface 5a. The third support surface 5a can be a plane.

[0125] As shown in Figure 2, when the first shell 300 and the second shell 400 are relatively unfolded to a flattened state (that is, the electronic device 1000 is in a flattened 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 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, so that when the second display area 202 is touched, the second display area 202 is not easily damaged or dented due to external force, thereby significantly improving the reliability of the flexible screen 200.

[0126] For example, when the electronic device 1000 is in a 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. In this case, the flatness of the flexible screen 200 is better, and the user experience is better.

[0127] As shown in Figure 4, 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 located on the same side of the main shaft 1. The first support plate 4 and the second support plate 5 are close to each other. The main shaft 1, the first support plate 4 and the second support plate 5 can enclose a screen space 100a. The second display area 202 of the flexible screen 200 can be located in the screen space 100a.

[0128] 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 act together 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, or even fit together, so that the flexible screen 200 is in the shape of a "water drop". 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, which is not specifically limited in this application.

[0129] It is understandable that, regardless of whether the electronic device 1000 is in a flat state or in 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 shape of the flexible screen 200 when the electronic device 1000 is in a flat state or a folded state. In this application, by adjusting the structural settings 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 coordination between the components, the arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 is adjusted, thereby better controlling the shape of the flexible screen 200, so that the appearance of the flexible screen 200 better meets the needs of users, that is, the electronic device 1000 has a higher degree of refinement and the user experience of the electronic device 1000 is better. 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.

[0130] As shown in Figures 7 and 8, the main shaft 1 includes a first end portion 10a, a middle portion 10b, and a second end portion 10c, which are connected in sequence. The first end portion 10a and the second end portion 10c of the main shaft 1 can be used to connect two end connection assemblies 2, respectively. The middle portion 10b of the main shaft 1 can be used to connect the middle connection assembly 3.

[0131] It is understandable that the first end 10a and the second end 10c of the main shaft 1 can be the same or similar structures, symmetrical or partially symmetrical structures, or different structures. For example, the first end 10a and the second end 10c of the main shaft 1 are symmetrical structures. The basic design of the component structure of the second end 10c of the main shaft 1, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first end 10a of the main shaft 1. At the same time, the first end 10a and the second end 10c of the main shaft 1 are allowed to be slightly different in the detailed structure or position arrangement of the components. The details will not be repeated here. In addition, the structure of the middle part 10b of the base can be determined according to the structure of the middle connection assembly 3. Specifically, this application does not limit it.

[0132] FIG9 is a schematic diagram of a partial structure of the main shaft 1 shown in FIG7 in one embodiment.

[0133] As shown in Figures 8 and 9, in some embodiments, the spindle 1 includes a base 11, a bottom shell 12, and an upper cover 13. For example, there may be three upper covers 13. In other embodiments, the number of upper covers 13 is not specifically limited.

[0134] 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.

[0135] 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.

[0136] FIG10 is a partial cross-sectional schematic diagram of an embodiment of the main shaft 1 shown in FIG9 at line CC.

[0137] As shown in Figures 9 and 10, the upper cover 13 is fixed to the base 11. It is understood that the bottom surface 132 of the upper cover 13 faces the top surface 111 of the base 11. A portion of the bottom surface 132 of the upper cover 13 is opposite and spaced from a portion of the top surface 111 of the base 11, forming an arcuate groove 141. 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 can be flush with the top surface 111 of the base 11.

[0138] 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.

[0139] As shown in Figures 9 and 10, the bottom shell 12 is fixed on the base 11. It is understandable that the inner surface of the bottom shell 12 faces the bottom surface 112 of the base 11. It is understandable that the multiple three-dimensional space structures of the base 11 and the multiple three-dimensional space structures of the bottom shell 12 together form multiple activity spaces 142 of the main shaft 1. Exemplarily, activity 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 multiple connection components is more flexible and diversified. Activity spaces 142 with the same structure can be used to cooperate with structural members with the same structure, which is conducive to reducing the design difficulty and cost of the main shaft 1 and the end connection components 2 and the middle connection components 3. Among them, Figure 10 schematically indicates the numbers of a part of the number of activity spaces 142.

[0140] In some embodiments, some protrusions (not shown) of the base 11 have a limiting function. These protrusions are located in the movable space 142 and are used to limit the end connection component 2 and the middle connection component 3 to prevent 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 of the end connection component 2, the middle connection component 3 and the main shaft 1, thereby making the folding mechanism 100 more reliable.

[0141] Figure 11 is a partially exploded schematic diagram of one embodiment of the end connection assembly 2 shown in Figure 8. Figure 12 is a partially exploded schematic diagram of the end connection assembly 2 shown in Figure 11 at another angle.

[0142] As shown in Figures 11 and 12, the end connection assembly 2 includes a first fixed frame 21, a second fixed frame 22, a first rotating member 23, a second rotating member 24, a first large gear connecting rod 25, a second large gear connecting rod 26, a first small gear connecting rod 27a, a second small gear connecting rod 27b and a damping member 28.

[0143] It is understood that both the first large gear connecting rod 25 and the first small gear connecting rod 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 connecting rod 25 or the first small gear connecting rod 27a. Of course, the first connecting arm 20a can also include a first connecting member at another location in the folding mechanism 100, wherein the first connecting member movably connects the main shaft 1 and the first fixed frame 21. This application does not limit the specific location of the first connecting arm 20a.

[0144] Furthermore, the second large gear connecting rod 26 and the second small gear connecting rod 27b can both 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 either the second large gear connecting rod 26 or the second small gear connecting rod 27b. Of course, the second connecting arm 20b can also include a second connecting member at another location within the folding mechanism 100, wherein the second connecting member movably connects the main shaft 1 and the second fixed frame 22. This application does not limit the specific location of the second connecting arm 20b.

[0145] In some embodiments, the end connection assembly 2 may include more or fewer structures. For example, the end connection assembly 2 may not include the first rotating member 23, the second rotating member 24, the first pinion connecting rod 27a or the second pinion connecting rod 27b.

[0146] As shown in Figures 11 and 12, the first fixing frame 21 includes a first fixing frame body 211, a plurality of through-holes 212, a plurality of protrusions 213, a plurality of grooves 214, and a plurality of fastening holes 215. The plurality of through-holes 212, the plurality of protrusions 213, and the plurality of grooves 214 are formed in the first fixing frame body 211. The plurality of through-holes 212, the plurality of protrusions 213, and the plurality of grooves 214 are combined to form a first sliding space 216, a second sliding space 217, a third sliding space 218, and an arc-shaped space 219, which are arranged at intervals. In addition, a plurality of fastening holes 215 are formed in the first fixing frame body 211. Figures 11 and 12 schematically illustrate the numbers of a portion of the through-holes 212, a portion of the protrusions 213, a portion of the grooves 214, and a portion of the fastening holes 215.

[0147] It is understood that the second fixing frame 22 and the first fixing frame 21 can have the same structure, a symmetrical structure, a partially symmetrical structure, or different structures, and this application does not impose strict restrictions on this. For example, the second fixing frame 22 and the first fixing frame 21 can have symmetrical structures. Among them, the basic design of the component structure of the second fixing frame 22, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant solutions of the first fixing frame 21. At the same time, it is allowed that the second fixing frame 22 and the first fixing frame 21 have slight differences in the detailed structure or position arrangement of the components.

[0148] FIG13 is an enlarged schematic diagram of the first rotating member 23 and the second rotating member 24 shown in FIG11 .

[0149] As shown in Figure 13, the first rotating member 23 includes a rotating end 231 and a sliding end 232 connected to the rotating end 231. For example, the rotating end 231 of the first rotating member 23 may be arc-shaped, and the sliding end 232 of the first rotating member 23 may be slider-shaped.

[0150] Exemplarily, the sliding end 232 of the first rotating member 23 is provided with a first avoidance hole 2321 . 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 .

[0151] Illustratively, the wall of the first avoidance hole 2321 includes a first abutting surface 2324. The first abutting surface 2324 is a portion of the wall of the first avoidance hole 2321 that is adjacent to the rotating end 231 of the first rotating member 23. The first abutting surface 2324 is inclined toward the rotating end 231 of the first rotating member 23, that is, the first abutting surface 2324 forms an acute angle with the top surface 2322 of the sliding end 232 of the first rotating member 23.

[0152] Fig. 14 is a partial structural schematic diagram 1 of an embodiment of the folding mechanism 100 shown in Fig. 7. Fig. 15 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism 100 shown in Fig. 7 at line DD.

[0153] As shown in Figures 14 and 15, 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 fixed frame 21. In other embodiments, the method of connecting the first rotating member 23 to the main shaft 1 and the first fixed frame 21 is not specifically limited.

[0154] Exemplarily, the rotating end 231 of the first rotating member 23 can be located in the arc-shaped groove 141 of the main shaft 1. The rotating end 231 of the first rotating member 23 can rotate in 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 is connected to the main shaft 1 through a virtual axis. The structure of the rotating connection is relatively simple and occupies little space, which is conducive to reducing the thickness of the folding mechanism 100, making it easier for the folding mechanism 100 and the electronic device 1000 to achieve a lightweight and thin setting. In some other embodiments, the rotating end 231 of the first rotating member 23 can also be connected to the main shaft 1 through a real axis, and the embodiments of the present application are not strictly limited to this.

[0155] For example, at least a portion of the sliding end 232 of the first rotating member 23 may be located in the first sliding space 216 of the first fixing frame 21 . The sliding end 232 of the first rotating member 23 may slide in the first sliding space 216 of the first fixing frame 21 .

[0156] As shown in Figures 13 to 15, 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 rotatably connected to the main shaft 1. The sliding end 242 of the second rotating member 24 is slidably connected to the second fixed frame 22. It is understandable that the second rotating member 24 and the first rotating member 23 can be of the same structure, a symmetrical structure, a partially symmetrical structure, or different structures, and this application does not strictly limit this. For example, the second rotating member 24 and the first rotating member 23 can be symmetrical structures. Among them, the basic design of the component structure of the second rotating member 24, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first rotating member 23. For example, it is allowed that the second rotating member 24 and the first rotating member 23 are slightly different in the detailed structure or position arrangement of the components.

[0157] FIG16 is an enlarged schematic diagram of an embodiment of the first support plate 4 shown in FIG8 at position M1.

[0158] As shown in FIG. 16 , the first support plate 4 includes a first support plate body 41 , a first movable block 42 and a first rotating block 43 .

[0159] 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).

[0160] Exemplarily, the first movable block 42 is protruding from the first fixed surface 413. The first movable block 42 has a first inclined hole 414. In this case, the first movable block 42 is generally annular. The outer annular surface of the first movable block 42 includes a second abutting surface 415. The second abutting surface 415 is a portion of the outer annular surface of the first movable block 42 that faces the right side 411 of the first support plate body 41.

[0161] Exemplarily, relative to the left side 412 of the first support plate body 41 , the second abutting surface 415 is disposed close to the right side 411 of the first support plate body 41 .

[0162] Exemplarily, the second abutting surface 415 is inclined toward the right side 411 of the first support plate body 41. At this time, the second abutting surface 415 and the first fixing surface 413 are arranged at an acute angle.

[0163] For example, the first rotating block 43 is protruding from the first fixed surface 413. The first rotating block 43 can be generally arc-shaped. It is understood that the first movable block 42 and the first rotating block 43 of the first support plate 4 can together form a connecting structure. The first support plate 4 can include multiple connecting structures arranged at intervals.

[0164] Figure 17 is a second partial structural diagram of an embodiment of the folding mechanism 100 shown in Figure 7. Figure 18 is a structural diagram of the folding mechanism 100 shown in Figure 17 at another angle. Figure 19 is a partial cross-sectional diagram of an embodiment of the folding mechanism 100 shown in Figure 17 taken along line EE.

[0165] As shown in Figures 17 to 19 , the spindle 1 is located between the first support plate 4 and the second support plate 5. Relative to the left side 412 of the first support plate body 41, the right side 411 of the first support plate body 41 is disposed toward the spindle 1.

[0166] Exemplarily, the first support plate 4 is also rotatably connected to the first fixed frame 21. Exemplarily, the first rotating block 43 of the first support plate 4 can be located in the arc-shaped space 219 of the first fixed frame 21, and the first rotating block 43 of the first support plate 4 can rotate in the arc-shaped space 219 of the first fixed frame 21. It can be understood that the first support plate 4 and the first fixed frame 21 are connected by a virtual axis. The structure of the rotational connection is relatively simple and takes up little space, which is conducive to reducing the thickness of the folding mechanism 100, making it easier for the folding mechanism 100 and the electronic device 1000 to achieve a lightweight setting. In some other embodiments, the first support plate 4 and the first fixed frame 21 can also be connected by a real axis, and this embodiment of the present application is not strictly limited to this. In other embodiments, the way the first support plate 4 is connected to the first fixed frame 21 is not specifically limited.

[0167] Illustratively, a portion of the first fixing frame 21 is located near the first fixing surface 413 of the first support plate body 41, and a portion is located near the left side 412 of 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.

[0168] FIG20 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism 100 shown in FIG17 at line FF.

[0169] As shown in Figures 17 and 20 , the first support plate 4 is slidably connected to the sliding end 232 of the first rotating member 23, and relative rotation between the first support plate 4 and the sliding end 232 of the first rotating member 23 is possible. In this case, the first support plate 4 is connected to the main shaft 1 via the first rotating member 23. For example, 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 is slidably connected to the first movable block 42 of the first support plate 4 via a pin 44. Furthermore, the sliding end 232 of the first rotating member 23 is relatively rotatable with the first movable block 42 of the first support plate 4 via the pin 44. Specifically, the folding mechanism 100 includes a pin 44. Both ends of the pin 44 are fixed to the sliding end 232 of the first rotating member 23. The middle portion of the pin 44 passes through the first inclined hole 414 of the first movable block 42 of the first supporting plate 4. The middle portion of the pin 44 can slide and rotate relatively in the first inclined hole 414 of the first support plate 4. In other embodiments, the manner in which the first support plate 4 is connected to the first rotating member 23 is not specifically limited.

[0170] As shown in Figures 17 to 20, the second support plate 5 is rotatably connected to the second fixed frame 22. The second support plate 5 is slidably connected to the sliding end 242 of the second rotating member 24, and relative rotation can occur between the second support plate 5 and the sliding end 242 of the second rotating member 24. It is understandable that the second support plate 5 and the first support plate 4 can be of the same structure, a mirror-symmetrical structure, a partially mirror-symmetrical structure, a centrally symmetrical structure, a partially centrally symmetrical structure, or different structures, and this application does not strictly limit this. In some embodiments, the second support plate 5 and the first support plate 4 are symmetrical structures, and the basic design of the component structure of the second support plate 5, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first support plate 4. At the same time, the second support plate 5 and the first support plate 4 are allowed to have slight differences in the detailed structure or position arrangement of the components. The details will not be repeated here.

[0171] As shown in Figures 17 to 20, the first fixing frame 21 is fixed to the first shell 300 (see Figure 6). The second fixing frame 22 is fixed to the second shell 400 (see Figure 6). Exemplarily, the first fixing frame 21 can be connected to the first shell 300 by screws. The second fixing frame 22 can be connected to the second shell 400 by screws. It can be understood that since the first fixing frame 21 is fixed to the first shell 300, the second fixing frame 22 is fixed to the second shell 400, the first rotating member 23 connects the first fixing frame 21 and the main shaft 1, and the second rotating member 24 connects the second fixing frame 22 and the main shaft 1, the first shell 300 and the second shell 400 can be connected by the first fixing frame 21, the first rotating member 23, the second rotating member 24, and the second fixing frame 22. Thus, when the electronic device 1000 switches from the flat state to the folded state, the first housing 300 and the second housing 400 move closer to each other, and the first housing 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 via the first rotating member 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 via the second rotating member 24. When the electronic device 1000 switches from the folded state to the flat state, the first housing 300 and the second housing 400 open to each other, and the first housing 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 via the first rotating member 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 via the second rotating member 24.

[0172] It can be understood that, as shown in Figures 14 and 15, since the sliding end 232 of the first rotating member 23 is slidably connected to the first fixed frame 21, 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 axis), the sliding end 242 of the second rotating member 24 is slidably connected to the second fixed frame 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 axis), so that during the relative expansion or folding of the first shell 300 and the second shell 400, the relative motion trajectory of the first fixed frame 21 and the main shaft 1 can be determined, and the relative motion trajectory of the second fixed frame 22 and the main shaft 1 can be determined. As shown in Figures 16 to 20, since the first support plate 4 is rotatably connected to the first fixed frame 21 (illustratively, the first support plate 4 and the first fixed frame 21 are constrained by a virtual axis), the first support plate 4 is slidably connected to the first rotating member 23 and rotates relative to the first rotating member 23, and the motion trajectory of the first support plate 4 is constrained by the first fixed frame 21 and the first rotating member 23. The second support plate 5 is rotatably connected to the second fixed frame 22 (illustratively, the second support plate 5 and the second fixed frame 22 are constrained by a virtual axis), the second support plate 5 is slidably connected to the second rotating member 24 and rotates relative to the second rotating member 24, and the motion trajectory of the second support plate 5 is constrained by the second fixed frame 22 and the second rotating member 24. When the motion trajectories of the first fixed frame 21 and the second fixed frame 22 relative to the main shaft 1 are determined, the motion trajectories of the first support plate 4 and the second support plate 5 can also be determined.

[0173] It is understandable that the first support plate 4 and the first rotating member 23 cooperate with the first inclined hole 414 through the pin shaft 44 to achieve control of the opening or closing angle of the first support plate 4.

[0174] As shown in Figure 20, when the electronic device 1000 is in the 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 an overlapping 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 have an interference fit, so that the first support plate 4 generates a force in the direction of movement. In this way, due to the interference fit 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. This force is used 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 the flattened state. For example, through the action force between the first supporting surface 2324 of the first rotating member 23 and the second supporting surface 415 of the first support plate 4, the angle between the first support plate 4 and the main axis 1 can be made equal to 180° as much as possible, that is, the flexible screen 200 can be completely flattened as much as possible, and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0175] It is understandable that when the electronic device 1000 is in the flattened state, the angle between the first support plate 4 and the main shaft 1 deviates from 180° to varying degrees for different folding mechanisms 100. In this case, the angle between the first support plate 4 and the main shaft 1 can be adjusted to varying degrees by adjusting the interference between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, thereby better controlling 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°, which is a relatively large deviation from 180°. At this time, the interference 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 significantly increased, thereby significantly adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state, 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 deviation from 180° is small. At this time, the interference 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, thereby slightly adjusting 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°.

[0176] In this embodiment, the second abutting surface 415 is a portion of the outer annular surface of the first movable block 42 that is close to the right side surface 411. In this case, the second abutting surface 415 is arranged close 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 arranged closer to the main shaft 1. In this way, by slightly increasing the interference 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 large extent. On the one hand, the shape of the first support plate 4 when the electronic device 1000 is flattened and between the main shaft 1 can be better controlled. 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 can also be higher. 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 relatively far from the main shaft 1, the interference between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 needs to be set to 0.5 mm to ensure that the angle between the first support plate 4 and the main shaft 1 is 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 relatively close to the main shaft 1, the interference between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is set to 0.2 mm to ensure that the angle between the first support plate 4 and the main shaft 1 is 180°.

[0177] In this embodiment, the first abutting surface 2324 is inclined toward the rotating end 231 of the first rotating member 23, and the second abutting surface 415 is inclined toward the right side 411 of the first support plate body 41, thereby making 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 inclined. Thus, when the first abutting surface 2324 of the first rotating member 23 is interference-fitted with the second abutting surface 415 of the first support plate 4 when the electronic device 1000 is in the flattened state, 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 is greater in the direction of motion (for example, the force component in the Z-axis direction is greater), thereby better controlling the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state, and better controlling the shape of the first support plate 4 between the electronic device 1000 and the main shaft 1.

[0178] The above text specifically introduces the matching relationship between the first rotating member 23 and the first support plate 4 in conjunction with the relevant drawings. For the matching relationship between the second rotating member 24 and the second support plate 5, please refer to the matching 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 also includes a fourth abutting surface 515, and the third abutting surface 2424 and the fourth abutting surface 515 are interference fit.), and the details will not be repeated 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 is as close to 180° as possible, and the angle between the second support plate 5 and the main shaft 1 can also be as close to 180° as possible, thereby ensuring to a large extent that the flexible screen 200 is completely flattened, and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0179] FIG21 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism 100 shown in FIG18 at line GG.

[0180] As shown in FIG21 , 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 .

[0181] When the electronic device 1000 is in the 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 further rotating relative to the base 11, thereby helping to control 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 bending, that is, to control the angle between the first support plate 4 and the main shaft 1 to be 180 degrees as much as possible.

[0182] FIG22 is an enlarged schematic diagram of an embodiment of the first support plate 4 shown in FIG8 at position M2.

[0183] As shown in Figures 21 and 22 , the first support plate 4 has a first extension block 45. The first extension block 45 is protruded from the right side 411 of the first support plate body 41.

[0184] As shown in Figures 21 and 22, when the electronic device 1000 is in a flattened state, the first extension block 45 of the first support plate 4 is disposed opposite a portion of the base 11. Thus, if the electronic device 1000 falls, the first extension block 45 can block the first support plate 4 to prevent it from falling further.

[0185] For example, the first extension block 45 of the first support plate 4 does not contact the base 11. In this way, when the electronic device 1000 is flattened or folded, the first extension block 45 of the first support plate 4 and the base 11 are unlikely to interfere with each other.

[0186] It is 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. The details will not be repeated here. In this way, the mutual cooperation between the second support plate 5 and the main shaft 1 can also help control the angle between the second support plate 5 and the main shaft 1 when the electronic device 1000 is in the flat state, so as to prevent the second support plate 5 from forming a "V"-shaped angle due to excessive bending.

[0187] FIG23 is a schematic structural diagram of an embodiment of the first large gear connecting rod 25 and the first small gear connecting rod 27 a shown in FIG11 .

[0188] As shown in FIG. 23 , the first large gear connecting rod 25 includes a sliding end 251 and a rotating end 252 .

[0189] Exemplarily, the sliding end 251 of the first large gear connecting rod 25 is roughly plate-shaped. The rotating end 252 of the first large gear connecting rod 25 includes a first gear portion 2521 and a plurality of first protrusions 2522. The first gear portion 2521 may be provided with a rotation 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 shape and spaced apart from each other. The plurality of first protrusions 2522 are arranged around the rotation shaft hole 2523 of the first gear portion 2521. The first large gear connecting rod 25 may be an integrally formed structural component to provide higher structural strength.

[0190] Illustratively, the rotating end 252 of the first large gear connecting rod 25 further includes a first rotating shaft portion 2524. The first rotating shaft portion 2524 is located on a side of the first gear portion 2521 away from the first protrusion 2522. The first rotating shaft portion 2524 is spaced apart 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 the rotating shaft hole 2523 of the first gear portion 2521.

[0191] Exemplarily, the first large gear connecting rod 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 connecting rod 25 to make the shape of the first large gear connecting rod 25 more diverse.

[0192] As shown in FIG. 23 , the second large gear connecting rod 26 includes a sliding end 261 and a rotating end 262 .

[0193] Exemplarily, the sliding end 261 of the second large gear connecting rod 26 is generally plate-shaped. The rotating end 262 of the second large gear connecting rod 26 includes a second gear portion 2621 and a plurality of second protrusions 2622. The second gear portion 2621 may be provided with a rotation 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 shape and spaced apart from each other. The plurality of second protrusions 2622 are arranged around the rotation shaft hole 2623 of the second gear portion 2621. The second large gear connecting rod 26 may be an integrally formed structural component to provide greater structural strength.

[0194] Illustratively, the rotating end 262 of the second large gear connecting rod 26 further includes a second rotating shaft portion 2624. The second rotating shaft portion 2624 is located on a side of the second gear portion 2621 away from the second protrusion 2622. The second rotating shaft portion 2624 is spaced apart from the second gear portion 2621. The second rotating shaft portion 2624 may be provided with a rotating hole 2625. The rotating hole 2625 of the second rotating shaft portion 2624 is disposed opposite the rotating shaft hole 2623 of the second gear portion 2621.

[0195] Exemplarily, the second large gear connecting rod 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 connecting rod 26 to make the shape of the second large gear connecting rod 26 more diverse.

[0196] FIG24 is a schematic structural diagram of an embodiment of the first pinion connecting rod 27 a and the second pinion connecting rod 27 b shown in FIG11 .

[0197] As shown in FIG. 24 , the first pinion link 27 a includes a sliding end 271 a and a rotating end 272 a .

[0198] Exemplarily, the sliding end 271a of the first pinion connecting rod 27a is generally plate-shaped. The rotating end 272a of the first pinion connecting rod 27a includes a gear portion 2721a, a plurality of first protrusions 2722a, and a plurality of second protrusions 2723a. The gear portion 2721a may be provided with a rotation shaft hole 2724a. The plurality of first protrusions 2722a and the plurality of second protrusions 2723a are disposed opposite each other at opposite ends of the gear portion 2721a. The plurality of first protrusions 2722a are arranged in a ring shape and spaced apart from each other. The plurality of first protrusions 2722a are arranged in a ring shape and spaced apart from each other. The plurality of second protrusions 2723a are arranged in a ring shape and spaced apart from each other. The plurality of second protrusions 2723a are arranged in a ring shape and spaced apart from each other. The plurality of second protrusions 2723a are disposed around the rotation shaft hole 2523 of the gear portion. The first pinion connecting rod 27a may be an integrally formed structural component to provide greater structural strength.

[0199] As shown in Figure 24, the second pinion connecting rod 27b includes a sliding end 271b and a rotating end 272b. It is understandable that the second pinion connecting rod 27b and the first pinion connecting rod 27a can be of the same structure, a symmetrical structure, a partially symmetrical structure, or a different structure, and this application does not strictly limit this. For example, the second pinion connecting rod 27b and the first pinion connecting rod 27a can be of a symmetrical structure. Among them, the basic design of the component structure of the second pinion connecting rod 27b, the connection relationship design between the components, and the connection relationship design between the components and other structures outside the assembly can all refer to the relevant scheme of the first pinion connecting rod 27a. At the same time, the second pinion connecting rod 27b and the first pinion connecting rod 27a are allowed to be slightly different in the detailed structure or position arrangement of the components. The details will not be repeated here.

[0200] FIG. 25 is a partially exploded schematic diagram of an embodiment of the damping member 28 shown in FIG. 11 .

[0201] As shown in Figure 25, the damping member 28 includes a first synchronous gear 281, a second synchronous gear 282, a first locking member 283, a second locking member 284, a third locking member 285, a fourth locking 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.

[0202] For example, there may be a plurality of first synchronization gears 281 , and the plurality of first synchronization gears 281 may be meshed with each other. For example, the plurality of first synchronization gears 281 may be arranged in a series.

[0203] For example, there may be a plurality of second synchronous gears 282 , and the plurality of second synchronous gears 282 may be meshed with each other. For example, the plurality of second synchronous gears 282 may be arranged in a series.

[0204] In some embodiments, the first retaining member 283 is located between the first elastic member 288 and the first synchronous gear 281. The second retaining member 284 is located on a side of the first synchronous gear 281 away from the first retaining member 283. The second synchronous gear 282 is located on a side of the first elastic member 288 away from the first retaining member 283. The third retaining member 285 is located between the first elastic member 288 and the second synchronous gear 282. The fourth retaining member 286 is located on a side of the second synchronous gear 282 away from the third retaining member 285. The fixing plate 287 is located on a side of the fourth retaining member 286 away from the second synchronous gear 282. For example, the second retaining member 284, the first synchronous gear 281, the first retaining member 283, the first elastic member 288, the third retaining member 285, the second synchronous gear 282, the fourth retaining member 286, and the fixing plate 287 are arranged in sequence along a direction parallel to the length of the main shaft 1.

[0205] As shown in Figure 25, by way of example, the first retaining member 283 includes a first retaining plate 2831 and a plurality of first protrusion groups 2832, wherein the plurality of first protrusion groups 2832 are fixed to the same side surface of the first retaining plate 2831. The first retaining plate 2831 includes a plurality of first through holes 2833, wherein the plurality of first through holes 2833 are spaced apart from each other. Two first protrusion groups 2832 are disposed in a one-to-one correspondence with two of the first through holes 2833. Each first protrusion group 2832 may include a plurality of first protrusions 2834, wherein the plurality of first protrusions 2834 are arranged in a ring shape and spaced apart from each other. The plurality of first protrusions 2834 are disposed around the first through holes 2833, and a retaining groove is formed between two adjacent first protrusions 2834. The first retaining member 283 may be an integrally formed structural member to provide higher structural strength.

[0206] As shown in Figure 25, by way of example, the second retaining member 284 includes a main body 2841 and a plurality of pivot blocks 2842. The number of pivot blocks 2842 can be four. Two of the pivot blocks 2842 are located on one side of the main body 2841 and are spaced apart. The other two pivot blocks 2842 are located on the other side of the main body 2841 and are spaced apart. Each pivot block 2842 is provided with a second through hole 2843. The second through holes 2843 of the pivot blocks 2842 on the same side are arranged opposite each other.

[0207] As shown in Figure 25, illustratively, the third retaining member 285 includes a third retaining plate 2851 and a plurality of second protrusion groups 2852, wherein the plurality of second protrusion groups 2852 are fixed to the same side surface of the third retaining plate 2851. The third retaining plate 2851 includes a plurality of third through holes 2853, which are spaced apart from each other. Two second protrusion groups 2852 are arranged in a one-to-one correspondence with two of the third through holes 2853. Each second protrusion group 2852 may include a plurality of second protrusions 2854, which are arranged in a ring shape and spaced apart from each other. The plurality of second protrusions 2854 are arranged around the third through holes 2853, and a retaining groove is formed between two adjacent second protrusions 2854. The third retaining member 285 may be an integrally formed structural member to provide higher structural strength.

[0208] As shown in FIG25 , the fourth retaining member 286 exemplarily includes a plurality of fourth through holes 2861 and a plurality of third protrusion groups 2862, wherein the plurality of fourth through holes 2861 are spaced apart from each other. Two third protrusion groups 2862 are disposed in a one-to-one correspondence with two of the fourth through holes 2861. Each third protrusion group 2862 may include a plurality of third protrusions 2863, wherein the plurality of third protrusions 2863 are arranged in a ring shape and spaced apart from each other. The plurality of third protrusions 2863 are disposed around the fourth through holes 2861, and a retaining groove is formed between two adjacent third protrusions 2863. The fourth retaining member 286 may be an integrally formed structural member to provide a higher structural strength.

[0209] As shown in FIG25 , the fixing plate 287 can be, for example, a plate structure. The fixing plate 287 includes a plurality of fifth through holes 2871, which are spaced apart from each other. For example, the arrangement shape and arrangement spacing 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 can be the same.

[0210] As shown in FIG. 25 , illustratively, the first elastic member 288 includes a plurality of springs.

[0211] FIG26 is a third schematic diagram of a partial structure of the folding mechanism 100 shown in FIG7 in one embodiment.

[0212] As shown in Figures 25 and 26, and in combination with Figures 23 and 24, the first connecting shaft 289a is connected to the second locking member 284, the rotating end 252 of the first large gear connecting rod 25, the first locking member 283, one of the first elastic members 288, the third locking member 285, the rotating end 272a of the first small gear connecting rod 27a, the fourth locking member 286 and the fixed plate 287. Among them, the first transfer shaft 289a passes through a second through hole 2843 of the second locking member 284, the rotating hole 2525 and the rotating shaft hole 2523 of the first large gear connecting rod 25, a first through hole 2833 of the first locking member 283, the inner space of one of the first elastic members 288, a third through hole 2853 of the third locking member 285, the rotating shaft hole 2724a of the first small gear connecting rod 27a, a fourth through hole 2861 of the fourth locking member 286 and a fifth through hole 2871 of the fixing plate 287.

[0213] The first adapter shaft 289a includes a first end 2891a and a second end 2892a disposed opposite each other. The first end 2891a of the first adapter shaft 289a is adjacent to the second retaining member 284 and protrudes relative to the second retaining member 284, while the second end 2892a of the first adapter shaft 289a is adjacent to the fixed plate 287 and protrudes relative to the fixed plate 287. For example, the first end 2891a of the first adapter shaft 289a may be provided with a limiting flange located on a side of the second retaining member 284 away from the first retaining member 283. The limiting flange may abut against the second retaining member 284 to achieve position limiting. The second end 2892a of the first adapter shaft 289a may be fixedly connected to the fixed plate 287 by welding, bonding, or other methods. The spring is in a compressed state.

[0214] In some embodiments, the number of third transfer shafts 289c, the number of first synchronous gears 281, and the number of second synchronous gears 282 are all the same, and the third transfer shafts 289c, the first synchronous gear 281, the second synchronous gear 282, and some of the first elastic members 288 are provided in a one-to-one correspondence. The third transfer shaft 289c is inserted into the second retaining member 284, the first synchronous gear 281, the first retaining member 283, another first elastic member 288, the third retaining member 285, the second synchronous gear 282, the fourth retaining member 286, and the fixing plate 287. The third transfer shaft 289c sequentially passes through the rotation axis hole of the first synchronous gear 281, the other first through hole 2833 of the first retaining member 283, the inner space of the other first elastic member 288, the other third through hole 2853 of the third retaining member 285, and the rotation axis hole of the second synchronous gear 282. The third adapter shaft 289c includes a first end 2891c and a second end 2892c disposed opposite to each other. The first end 2891c of the third adapter shaft 289c is inserted into the other second through hole 2843 of the second retaining member 284 and abuts against the wall of the second through hole 2843 to achieve position limiting. The second end 2892c of the third adapter shaft 289c is inserted into the other fourth through hole 2861 of the fourth retaining member 286 and abuts against the wall of the fourth through hole 2861 to achieve position limiting.

[0215] In some embodiments, the second transfer shaft 289b is inserted into the second retaining member 284, the rotating end 262 of the second large gear connecting rod 26, the first retaining member 283, another spring, the third retaining member 285, the second synchronous gear 282, the fourth retaining member 286, and the fixing plate 287. The second transfer shaft 289b passes through the other second through hole 2843 of the second retaining member 284, the rotating shaft hole 2623 of the second large gear connecting rod 26, the other first through hole 2833 of the first retaining member 283, the inner space of the other first elastic member 288, the other third through hole 2853 of the third retaining member 285, the rotating shaft hole of the second small gear connecting rod 27b, the other fourth through hole 2861 of the fourth retaining member 286, and the other fifth through hole 2871 of the fixing plate 287.

[0216] The second adapter shaft 289b includes a first end 2891b and a second end 2892b disposed opposite each other. The first end 2891b of the second adapter shaft 289b is adjacent to the second retaining member 284 and protrudes relative to the second retaining member 284, while the second end 2892b of the second adapter shaft 289b is adjacent to the fixed plate 287 and protrudes relative to the fixed plate 287. For example, the first end 2891b of the second adapter shaft 289b may be provided with a limiting flange located on a side of the second retaining member 284 away from the first retaining member 283. The limiting flange may abut against the second retaining member 284 to achieve position limiting. The second end 2892b of the second adapter shaft 289b may be fixedly connected to the fixed plate 287 by welding, bonding, or other methods. The spring is in a compressed state.

[0217] As shown in FIG26 and in combination with FIG23 , the rotating end 252 of the first large gear connecting rod 25 engages the rotating end 262 of the second large gear connecting rod 26 via a plurality of first synchronous gears 281. It will be understood that 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 are connected via the plurality of first synchronous gears 281, so that the rotation angle of the rotating end 252 of the first large gear connecting rod 25 and the rotation angle of the rotating end 262 of the second large gear connecting rod 26 are equal in magnitude and opposite in direction, so that the rotational movements of the first large gear connecting rod 25 and the second large gear connecting rod 26 relative to the main shaft 1 remain synchronized, that is, they move toward or away from each other synchronously.

[0218] As shown in FIG26 and in conjunction with FIG24 , the rotating end 272a of the first pinion link 27a meshes with the rotating end 272b of the second pinion link 27b via a plurality of second synchronizing gears 282. It will be appreciated that the rotating end 272a of the first pinion link 27a and the rotating end 272b of the second pinion link 27b are connected via the plurality of second synchronizing gears 282, such that the rotation angle of the rotating end 272a of the first pinion link 27a and the rotation angle of the rotating end 272b of the second pinion link 27b are equal in magnitude and opposite in direction, thereby maintaining synchronization in the rotation of the first pinion link 27a and the second pinion link 27b relative to the main shaft 1, i.e., they move toward or away from each other synchronously.

[0219] As shown in FIG26 , the first gear portion 2521 of the rotating end 252 of the first large gear connecting rod 25 and the second gear portion 2621 of the rotating end 262 of the second large gear connecting rod 26 are located between the first and second latching members 283 and 284. The rotating end 272a of the first and second small gear connecting rods 27a and 27b are located between the third and fourth latching members 285 and 286.

[0220] Please refer to Figures 25 and 26, and in combination with Figures 23 and 24, the multiple first protrusions 2522 of the first large gear connecting rod 25 and the multiple first protrusions 2834 of one of the first protrusion groups 2832 are arranged alternately to form a clamping structure, and the multiple second protrusions 2622 of the second large gear connecting rod 26 and the multiple first protrusions 2834 of the other first protrusion group 2832 are arranged alternately to form a clamping structure.

[0221] In some embodiments, 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 are both engaged with the first engaging member 283 to form an engaging structure, so that the first large gear connecting rod 25 and the second large gear connecting rod 26 can stay at certain positions.

[0222] In addition, the first elastic member 288 is in a compressed state, and the elastic force generated by the first elastic member 288 pushes the first retaining member 283 against 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. At this time, the first retaining member 283 and the second retaining member 284 cooperate to press the rotating end 252 of the first large gear connecting rod 25, the first synchronous gear 281, and the rotating end 262 of the second large gear connecting rod 26, thereby ensuring a stable engagement structure between the rotating end 252 of the first large gear connecting rod 25, the first synchronous gear 281, and the rotating end 262 of the second large gear connecting rod 26 and the first retaining member 283 and the second retaining member 284.

[0223] Among them, when the rotating end 252 of the first large gear connecting rod 25, the rotating end 262 of the second large gear connecting rod 26 and the first synchronous gear 281 rotate relative to the first locking member 283 and the second locking member 284, the relative positions of the multiple first protrusions 2522 and the multiple first protrusions 2834 of one of the first protrusion groups 2832 change, and different locking structures can be formed. The relative positions of the multiple second protrusions and the multiple first protrusions 2834 of another first protrusion group 2832 change, and different locking structures can be formed.

[0224] In addition, the elastic force generated by the first elastic member 288 also pushes the third retaining member 285 against the rotating end 272a of the first pinion link 27a and the rotating end 272b of the second pinion link 27b. At this time, the third retaining member 285 and the fourth retaining member 286 cooperate to 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, thereby stabilizing the engagement structure between 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 and the third retaining member 285 and the fourth retaining member 286.

[0225] In some embodiments, the multiple first protrusions 2722a of the first pinion connecting rod 27a and the multiple second protrusions 2854 of the second protrusion group 2852 of the third retaining member 285 are arranged in a staggered manner to form a snap-fit ​​structure. The multiple second protrusions 2723a of the first pinion connecting rod 27a and the multiple third protrusions 2863 of the third protrusion group 2862 of the fourth retaining member 286 are arranged in a staggered manner to form a snap-fit ​​structure. Furthermore, the second pinion connecting rod 27b may also form a snap-fit ​​structure with both the third retaining member 285 and the fourth retaining member 286. The kinematic relationship between the first pinion connecting rod 27a and the third retaining member 285 and the fourth retaining member 286, as well as the kinematic relationship between the second pinion connecting rod 27b and the third retaining member 285 and the fourth retaining member 286, can be referred to in the kinematic relationship between the first gear connecting rod 25 and the first retaining member 283. Details will not be repeated here.

[0226] As shown in FIG26 , the rotating end 252 of the first large gear connecting rod 25, the rotating end 262 of the second large gear connecting rod 26, the rotating end 272a of the first pinion connecting rod 27a, the rotating end 272b of the second pinion connecting rod 27b, and the damping member 28 are all installed in the movable space 142 of the main shaft 1. The sliding end 251 of the first large gear connecting rod 25, the sliding end 261 of the second large gear connecting rod 26, the sliding end 271a of the first pinion connecting rod 27a, and the sliding end 271b of the second pinion connecting rod 27b are all located outside the main shaft 1.

[0227] Illustratively, the second retaining member 284 and the fourth retaining member 286 of the damping member 28 are both fixed to the base 11 of the main shaft 1. Illustratively, the second retaining member 284 and the fourth retaining member 286 can be secured to the main shaft 1 via fasteners (screws, pins, rivets, etc.). In this way, the other components of the damping member 28, the first large gear connecting rod 25, the second large gear connecting rod 26, the first small gear connecting rod 27a, and the second small gear connecting rod 27b can all be stably mounted on the main shaft 1, preventing them from shaking or becoming detached from the main shaft 1, thereby improving the reliability of the folding mechanism 100. Among them, the rotating end 252 of the first large gear connecting rod 25 and the rotating end 272a of the first small gear connecting rod 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 connecting rod 26 and the rotating end 272b of the second small gear connecting rod 27b are rotationally connected to the main shaft 1 through the second transfer shaft 289b.

[0228] It is understood that the number and size of the first synchronous gears 281 and the second synchronous gears 282 can be designed based on the specific form and size of the product, and this application does not impose strict restrictions on this. Furthermore, while this embodiment describes a damping member 28 structure, the damping member 28 can have a variety of implementation structures. Any damping member 28 capable of providing a damping force to the first large gear connecting rod 25 is within the scope of protection of this application.

[0229] It is understood that the damping member 28 can apply a damping force to the first large gear connecting rod 25, the second large gear connecting rod 26, the first pinion connecting rod 27a, and the second pinion connecting rod 27b, thereby limiting the position of the first large gear connecting rod 25, the second large gear connecting rod 26, the first pinion connecting rod 27a, and the second pinion connecting rod 27b to a certain extent. In other words, when the first large gear connecting rod 25, the second large gear connecting rod 26, the first pinion connecting rod 27a, and the second pinion connecting rod 27b are not subjected to a large external force, the damping member 28 can enable the first large gear connecting rod 25, the second large gear connecting rod 26, the first pinion connecting rod 27a, and the second pinion connecting rod 27b to maintain a preset relative position relationship, that is, the folding mechanism 100 can stay at a preset angle, and the folding mechanism 100 can remain in a flat state or a folded state, thereby improving the user experience of the folding mechanism 100 and the electronic device 1000.

[0230] FIG27 is a fourth schematic diagram of a partial structure of the folding mechanism 100 shown in FIG7 in one embodiment.

[0231] As shown in Figure 27, the sliding end 251 of the first large gear connecting rod 25 is slidably connected to the first fixed frame 21. For example, at least a portion of the sliding end 251 of the first large gear connecting rod 25 can be located in the second sliding space 217 of the first fixed frame 21. The sliding end 251 of the first large gear connecting rod 25 can slide in the second sliding space 217 of the first fixed frame 21.

[0232] Furthermore, the sliding end 261 of the second large gear connecting rod 26 is slidably connected to the second fixing frame 22. It is understood that the connection relationship between the sliding end 261 of the second large gear connecting rod 26 and the second fixing frame 22 can be similar to the connection relationship between the sliding end 251 of the first large gear connecting rod 25 and the first fixing frame 21. The details are not further described here.

[0233] As shown in FIG27 , the sliding end 271a of the first pinion link 27a is slidably connected to the first fixing frame 21. For example, at least a portion of the sliding end 271a of the first pinion link 27a may be located within the third sliding space 218 of the first fixing frame 21. The sliding end 271a of the first pinion link 27a may slide within the third sliding space 218 of the first fixing frame 21.

[0234] Furthermore, the sliding end 271b of the second pinion link 27b is slidably connected to the second fixing frame 22. It is understood that the connection relationship between the sliding end 271b of the second pinion link 27b and the second fixing frame 22 can be similar to the connection relationship between the sliding end 271a of the first pinion link 27a and the first fixing frame 21. The details are not further described here.

[0235] It is understandable that since the first fixing frame 21 is fixed to the first shell 300 (see Figure 6) and the second fixing frame 22 is fixed to the second shell 400 (see Figure 6), the first shell 300 and the second shell 400 can be connected through the first fixing frame 21, the first large gear connecting rod 25, the second large gear connecting rod 26, the first small gear connecting rod 27a, the second small gear connecting rod 27b and the second fixing frame 22. In this way, when the electronic device 1000 switches from the flat state to the folded state, the first shell 300 and the second shell 400 move closer to each other, and the first shell 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 through the first large gear connecting rod 25 and the first small gear connecting rod 27a, and the second shell 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 through the second large gear connecting rod 26 and the second small gear connecting rod 27b. When the electronic device 1000 switches from the folded state to the flattened state, the first shell 300 and the second shell 400 open to each other, and the first shell 300 can drive the first fixed frame 21 to rotate relative to the main shaft 1 through the first large gear connecting rod 25 and the first small gear connecting rod 27a, and the second shell 400 can drive the second fixed frame 22 to rotate relative to the main shaft 1 through the second large gear connecting rod 26 and the second small gear connecting rod 27b.

[0236] Figure 28 is a schematic structural diagram of another embodiment of the first large gear connecting rod 25 shown in Figure 11. Figure 29 is a schematic structural diagram of the first large gear connecting rod 25 shown in Figure 28 at another angle.

[0237] 28 and 29 , illustratively, the first large gear connecting rod 25 is provided with a first through hole 254 , which extends from a top surface 2511 of the sliding end 251 of the first large gear connecting rod 25 to a bottom surface 2512 of the sliding end 251 of the first large gear connecting rod 25 .

[0238] Exemplarily, the hole wall of the first through hole 254 includes a first mating surface 2541 . The first mating surface 2541 is a portion of the hole wall of the first through hole 254 that is close to the rotating end 252 of the first large gear connecting rod 25 .

[0239] Exemplarily, the first mating surface 2541 is inclined toward the rotating end 252 of the first large gear connecting rod 25 , that is, the first mating surface 2541 and the bottom surface 2512 of the sliding end 251 of the first large gear connecting rod 25 are set at an obtuse angle.

[0240] FIG30 is an enlarged schematic diagram of an embodiment of the first support plate 4 shown in FIG8 at position M3.

[0241] As shown in Figure 30, the first support plate 4 further includes a first abutting block 46. The first abutting block 46 is protruding from the first fixing surface 413. The first abutting block 46 includes a second mating surface 461. The second mating surface 461 is a portion of the outer surface of the first abutting block 46 that faces the right side 411 of the first support plate body 41.

[0242] Exemplarily, relative to the left side 412 of the first support plate body 41 , the second mating surface 461 is disposed close to the right side 411 of the first support plate body 41 .

[0243] Exemplarily, the second mating surface 461 is tilted toward the right side 411 of the first support plate body 41. At this time, the second mating surface 461 and the first fixing surface 413 are arranged at an acute angle.

[0244] FIG31 is a partial cross-sectional schematic diagram of an embodiment of the folding mechanism 100 shown in FIG27 at line HH.

[0245] Referring to FIG. 31 and in conjunction with FIG. 28 to FIG. 30 , when the electronic device 1000 is in the flattened state, at least a portion of the first abutting block 46 of the first support plate 4 is located within the first through hole 254 of the first large gear connecting rod 25, and the first mating surface 2541 of the first large gear connecting rod 25 abuts against the second mating surface 461 of the first support plate 4. The first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 form an overlapping surface.

[0246] For example, the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 can be interference fit, so that the first support plate 4 generates a force in the direction of movement. In this way, due to the interference setting of the first mating surface 2541 of the first large gear connecting rod 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 connecting rod 25 and the second mating surface 461 of the first support plate 4, thereby utilizing 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 connecting rod 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, thereby ensuring that the flexible screen 200 is completely flattened and the appearance consistency of the flexible screen 200 is better to meet the user experience.

[0247] It is understandable that when the electronic device 1000 is in the flattened state, the angle between the first support plate 4 and the main shaft 1 deviates from 180° to varying degrees for different folding mechanisms 100. In this case, the angle between the first support plate 4 and the main shaft 1 can be adjusted to varying degrees by adjusting the interference fit between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4, thereby better controlling 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°, which is a significant deviation from 180°. At this time, the interference fit between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 can be significantly increased, thereby significantly adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state, 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 deviation from 180° is small. At this time, the interference fit between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 can be slightly increased, thereby slightly adjusting 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°.

[0248] 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 connecting rod 25. This damping force prevents the first large gear connecting rod 25 from rotating relative to the main shaft 1, effectively locking the first large gear connecting rod 25. At this point, the interference fit between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is more stable.

[0249] In this embodiment, the second mating surface 461 is arranged close to the right side 411 of the first support plate body 41. At this time, the second mating surface 461 is arranged close to the main shaft 1. The overlapping surface formed by the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is arranged closer to the main shaft 1. In this way, by slightly increasing the interference between the first mating surface 2541 of the first large gear connecting rod 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 large extent, so that on the one hand, the shape of the first support plate 4 when the electronic device 1000 is flattened and between 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 will also be higher. For example, when the overlapping surface formed by the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is relatively far from the main shaft 1, the interference between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 needs to be set to 0.5 mm to ensure that the angle between the first support plate 4 and the main shaft 1 is 180°. When the overlapping surface formed by the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is relatively close to the main shaft 1, the interference between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is set to 0.2 mm to ensure that the angle between the first support plate 4 and the main shaft 1 is 180°.

[0250] In this embodiment, the first mating surface 2541 is tilted toward the rotating end 252 of the first large gear connecting rod 25, and the second mating surface 461 is tilted toward the right side 411 of the first support plate body 41, thereby making the overlap surface formed by the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 tilted. In this way, when the first mating surface 2541 of the first large gear connecting rod 25 is interference-fitted with the second mating surface 461 of the first support plate 4 when the electronic device 1000 is in the flattened state, the force between the first mating surface 2541 of the first large gear connecting rod 25 and the second mating surface 461 of the first support plate 4 is greater in the direction of motion (for example, the force component in the Z-axis direction is greater), thereby better controlling the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the flattened state, and better controlling the shape of the first support plate 4 between the electronic device 1000 and the main shaft 1.

[0251] It is understandable that, as shown in Figure 31, the cooperation relationship between the second support plate 5 and the second large gear connecting rod 26 can also refer to the cooperation relationship between the first support plate 4 and the first large gear connecting rod 25 (for example, the second large gear connecting rod 26 has a second cooperation surface 2641, the second support plate 5 has a second cooperation surface 561, and the second cooperation surface 2641 of the second large gear connecting rod 26 is in an interference fit with the second cooperation surface 561 of the second support plate 5 when the electronic device 1000 is in a flattened state, so that the second support plate 5 generates a force in the direction of movement). The details are not repeated here. In this way, through the cooperation between the second support plate 5 and the second large gear connecting rod 26, when the electronic device 1000 is in a flattened state, the angle between the second support plate 5 and the main shaft 1 is as close to 180° as possible, and the angle between the second support plate 5 and the main shaft 1 can also be as close to 180° as possible, thereby ensuring to a large extent that the flexible screen 200 is completely flattened, and the appearance consistency of the flexible screen 200 is better to meet the user's experience.

[0252] It will be appreciated that the preceding text, in conjunction with the relevant drawings, specifically describes the mating relationship between the first large gear connecting rod 25 and the first support plate 4, and the mating relationship between the second support plate 5 and the second large gear connecting rod 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 connecting rod 27a and the first support plate 4 can also refer to the mating relationship between the first large gear connecting rod 25 and the first support plate 4. The mating relationship between the second small gear connecting rod 27b and the second support plate 5 can also refer to the mating relationship between the second large gear connecting rod 26 and the second support plate 5. The details will not be repeated here.

[0253] It is understood that when the electronic device 1000 is in the flattened state, the mating relationship between the first connecting arm 20a and the first support plate 4 at other locations of the folding mechanism 100 can also refer to the mating relationship between the first large gear connecting rod 25 and the first support plate 4. Furthermore, the mating relationship between the second connecting arm 20b and the second support plate 5 at other locations of the folding mechanism 100 can also refer to the mating relationship between the second large gear connecting rod 26 and the second support plate 5. The details will not be further described here.

[0254] It is understood that, in other embodiments, the connection relationship between the first large gear connecting rod 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 connecting rod 25 is slidably connected to the first support plate 4, and the sliding end 251 of the first large gear connecting rod 25 and the first support plate 4 rotate relative to each other. In addition, the connection relationship between the first small gear connecting rod 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 connecting rod 27a is slidably connected to the first support plate 4, and the sliding end 271a of the first small gear connecting rod 27a and the first support plate 4 rotate relative to each other.

[0255] 29 , illustratively, the wall of the first through hole 254 includes a third mating surface 2542 . The third mating surface 2542 is a portion of the wall of the first through hole 254 away from the rotating end 252 of the first large gear connecting rod 25 .

[0256] Exemplarily, the third matching surface 2542 is arranged at an acute angle to the top surface 2511 of the sliding end 251 of the first large gear connecting rod 25 .

[0257] As shown in Figure 30 , the first support plate 4 also includes a second abutting block 47. The second abutting block 47 is protruding from the first fixing surface 413. The second abutting block 47 includes a fourth mating surface 471. The fourth mating surface 471 is a portion of the outer surface of the second abutting block 47 that faces the left side 412 of the first support plate body 41. Figure 30 schematically distinguishes the second abutting block 47 from the first abutting block 46 by a dotted line.

[0258] Exemplarily, relative to the right side 411 of the first support plate body 41 , the fourth mating surface 471 is disposed close to the left side 412 of the first support plate body 41 .

[0259] Exemplarily, the fourth mating surface 471 is tilted toward the left side 412 of the first support plate body 41. At this time, the fourth mating surface 471 and the first fixing surface 413 are arranged at an acute angle.

[0260] For example, 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 integrated 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 space utilization is improved. In addition, the manufacturing process of the first abutting block 46 and the second abutting block 47 is also relatively simple.

[0261] FIG32 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 shown in FIG3 taken along line II.

[0262] As shown in FIG32 , when the electronic device 1000 is in the folded state, at least a portion of the second abutting block 47 of the first support plate 4 is located within the first through hole 254 of the sliding end 251 of the first large gear connecting rod 25, and the third mating surface 2542 of the first large gear connecting rod 25 abuts against the fourth mating surface 471 of the first support plate 4. The third mating surface 2542 of the first large gear connecting rod 25 and the fourth mating surface 471 of the first support plate 4 form an overlapping surface.

[0263] Exemplarily, the third mating surface 2542 of the first large gear connecting rod 25 and the fourth mating surface 471 of the first support plate 4 can be interference fit. In this way, due to the interference setting between the third mating surface 2542 of the first large gear connecting rod 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 connecting rod 25 and the fourth mating surface 471 of the first support plate 4. The component of the force F in the positive direction of the X-axis can cause the first support plate 4 to open along the positive direction of the X-axis. At this time, the screen space 100a enclosed 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 schematically shows the direction of an embodiment of the force F through a dotted line with an arrow.

[0264] It can be understood that when the electronic device 1000 is in a folded state, the opening angle of the first support plate 4 can be adjusted to different degrees by adjusting the interference between the third mating surface 2542 of the first large gear connecting rod 25 and the fourth mating surface 471 of the first support plate 4 to different degrees, thereby better controlling the size of the screen space 100a.

[0265] It is understood that when the electronic device 1000 is in the folded state, the damping member 28 applies a damping force to the first large gear connecting rod 25. This damping force prevents the first large gear connecting rod 25 from rotating relative to the main shaft 1, effectively locking the first large gear connecting rod 25. At this point, the interference fit between the third mating surface 2542 of the first large gear connecting rod 25 and the fourth mating surface 471 of the first support plate 4 is more stable.

[0266] In this embodiment, by setting the third mating surface 2542 at an acute angle with the top surface 2511 of the sliding end 251 of the first large gear connecting rod 25, and by setting the fourth mating surface 471 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 connecting rod 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 connecting rod 25 is in an 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 of the force between the third mating surface 2542 of the first large gear connecting rod 25 and the fourth mating surface 471 of the first support plate 4 in the X-axis direction is greater, thereby increasing the angle of the first support plate 4 in the positive direction of the X-axis. In this case, the screen-accommodating space 100a enclosed by the first support plate 4, the main shaft 1, and the second support plate 5 can be larger, thereby further improving the reliability of the flexible screen 200.

[0267] The foregoing text, in conjunction with the relevant drawings, specifically introduces the cooperation relationship between the first large gear connecting rod 25 and the first support plate 4 when the electronic device 1000 is in the folded state. Regarding the cooperation relationship between the second large gear connecting rod 26 and the second support plate 5 when the electronic device 1000 is in the folded state, please refer to the cooperation relationship between the first large gear connecting rod 25 and the first support plate 4 when the electronic device 1000 is in the folded state. The specific details will not be repeated here. In this way, when the electronic device 1000 is in the folded state, the first support plate 4 is opened along the positive direction of the X-axis, and the second support plate 5 is opened along the negative direction of the X-axis. At this time, the screen space 100a enclosed 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.

[0268] It will be appreciated that the preceding text, in conjunction with the relevant drawings, specifically describes the mating relationship between the first large gear connecting rod 25 and the first support plate 4, and the mating relationship between the second support plate 5 and the second large gear connecting rod 26 when the electronic device 1000 is in the folded state. In other embodiments, when the electronic device 1000 is in the folded state, the mating relationship between the first small gear connecting rod 27a and the first support plate 4 can also refer to the mating relationship between the first large gear connecting rod 25 and the first support plate 4. The mating relationship between the second small gear connecting rod 27b and the second support plate 5 can also refer to the mating relationship between the second large gear connecting rod 26 and the second support plate 5. The details will not be repeated here.

[0269] It is understood that when the electronic device 1000 is in the folded state, the mating relationship between the first connecting arm 20a and the first support plate 4 at other locations of the folding mechanism 100 can also refer to the mating relationship between the first large gear connecting rod 25 and the first support plate 4. Furthermore, the mating relationship between the second connecting arm 20b and the second support plate 5 at other locations of the folding mechanism 100 can also refer to the mating relationship between the second large gear connecting rod 26 and the second support plate 5. The details will not be further described here.

[0270] FIG33 is a schematic structural diagram of the first large gear connecting rod 25 shown in FIG11 in another embodiment.

[0271] 33 , illustratively, the sliding end 251 of the first large gear connecting rod 25 is provided with a first receiving groove 2543 . The opening of the first receiving groove 2543 is formed at the bottom surface 2512 of the sliding end 251 of the first large gear connecting rod 25 .

[0272] 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 portion of the groove wall of the first accommodating groove 2543 facing away from the rotating end 252 of the first large gear connecting rod 25.

[0273] FIG34 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 shown in FIG3 taken along line JJ.

[0274] As shown in FIG34 , the first support plate 4 has a second extension block 48 . The second extension block 48 is protruded from the right side 411 of the first support plate body 41 .

[0275] As shown in Figures 33 and 34, when the electronic device 1000 is in the folded state, the second extension block 48 of the first support plate 4 is arranged opposite to the bearing surface 2544 of the first large gear connecting rod 25. In this way, when the electronic device 1000 in the folded state falls, 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 in the direction close to the main shaft 1, and further preventing the first support plate 4 from driving the flexible screen 200 down during the fall, thereby ensuring that the electronic device 1000 has better reliability.

[0276] For example, the second extension block 48 of the first support plate 4 does not contact the bearing surface 2544 of the first large gear connecting rod 25. In this way, when the folding mechanism 100 is flattened or folded, the second extension block 48 of the first support plate 4 and the first large gear connecting rod 25 are not likely to interfere with each other.

[0277] It is understood that the cooperation relationship between the second support plate 5 and the second large gear connecting rod 26 can also refer to the cooperation relationship between the first support plate 4 and the first large gear connecting rod 25. The specific details are not repeated here. In this way, the cooperation between the second support plate 5 and the second large gear connecting rod 26 can also prevent the second support plate 5 from falling in the direction close to the main shaft 1, thereby preventing the second support plate 5 from causing the flexible screen 200 to fall during the fall process, thereby ensuring the electronic device 1000 has better reliability.

[0278] It will be appreciated that the preceding text, in conjunction with the relevant drawings, specifically describes the mating relationship between the first large gear connecting rod 25 and the first support plate 4, and the mating relationship between the second support plate 5 and the second large gear connecting rod 26 when the electronic device 1000 is in the folded state. In other embodiments, when the electronic device 1000 is in the folded state, the mating relationship between the first small gear connecting rod 27a and the first support plate 4 can also refer to the mating relationship between the first large gear connecting rod 25 and the first support plate 4. The mating relationship between the second small gear connecting rod 27b and the second support plate 5 can also refer to the mating relationship between the second large gear connecting rod 26 and the second support plate 5. The details will not be repeated here.

[0279] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other, and any combination of features in different embodiments is also within the scope of protection of this application. That is to say, the multiple embodiments described above can also be arbitrarily combined according to actual needs.

[0280] It should be noted that all the above drawings are illustrative illustrations of this application and do not represent the actual size of the product. The dimensional ratio relationship between the components in the drawings does not serve as a limitation on the actual product of this application. The above are only some of the embodiments and implementation methods of this application. The scope of protection of this application is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed in this application can easily think of changes or replacements, which should be covered by the scope of protection of this application. Therefore, the scope of protection of this application shall be based on the scope of protection of the claims.

Claims

1. A folding mechanism (100), characterized in that: The invention comprises a main shaft (1), a first fixed frame (21), a second fixed frame (22), a first rotating member (23), a second rotating member (24), a first supporting plate (4), a second supporting plate (5) and a first connecting arm (20a), wherein the main shaft (1) is located between the first fixed frame (21) and the second fixed frame (22); The first rotating member (23) movably connects the main shaft (1) and the first fixed frame (21), and the second rotating member (24) movably connects the main shaft (1) and the second fixed frame (22); The first support plate (4) is movably connected to the first fixed frame (21) and the first rotating member (23); the second support plate (5) is movably connected to the second fixed frame (22) and the second rotating member (24); when the folding mechanism (100) is in an 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 a folded state, the first support plate (4) and the second support plate (5) are arranged opposite to each other and enclose a screen space (100a) with the main axis (1); The first connecting arm (20a) is movably connected to the first fixing frame (21) and the main shaft (1); the first connecting arm (20a) has a first mating surface (2541); the first supporting plate (4) has a second mating surface (461); when the folding mechanism (100) is in a flattened state, the first mating surface (2541) of the first connecting arm (20a) and the second mating surface (461) of the first supporting 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 matching surface (2542), and the first supporting plate (4) has a fourth matching surface (471); When the folding mechanism (100) is in a folded state, the third matching surface (2542) of the first connecting arm (20a) is interference-fitted with the fourth matching surface (471) of the first supporting plate (4).

3. The folding mechanism (100) according to claim 2, characterized in that: The first support plate (4) comprises a first support plate body (41), a first abutting block (46) and a second abutting block (47); The first support plate body (41) comprises a first fixing surface (413) and a first side surface (411) and a second side surface (412) arranged in opposite directions, 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 supporting block (46) is protruding from the first fixing surface (413), and the second matching surface (461) is a partial surface of the first supporting block (46) facing the first side surface (411); The second supporting block (47) is protruding from the first fixing surface (413), and the fourth matching surface (471) is a partial surface of the second supporting block (47) facing the second side surface (412).

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

5. The folding mechanism (100) according to claim 3 or 4, characterized in that: Relative to the second side surface (412), the second matching surface (461) is arranged close to the first side surface (411).

6. The folding mechanism (100) according to any one of claims 3 to 5, characterized in that: 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, characterized in that: 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 portion of the first abutting block (46) is located in the first through hole (254); The first mating surface (2541) of the first connecting arm (20a) is a portion of the hole wall of the first through hole (254).

8. The folding mechanism (100) according to any one of claims 1 to 7, characterized in that: The first connecting arm (20a) also has a bearing surface (2544); When the folding mechanism (100) is in a folded state, the bearing surface (2544) is arranged opposite to a portion of the first support plate (4).

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

10. The folding mechanism (100) according to claim 9, characterized in that: The folding mechanism (100) comprises a damping member (28), wherein the damping member (28) is arranged on the main shaft (1), and the damping member (28) is used to apply a damping force to the first connecting arm (20a) and the second connecting arm (24).

11. The folding mechanism (100) according to claim 10, characterized in that: The first connecting arm (20a) comprises a first large gear connecting rod (25), the first large gear connecting rod (25) comprises 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 fixed 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) comprises a second large gear connecting rod (26), the second large gear connecting rod (26) comprises 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 comprises a first synchronous gear (281), a first locking 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) is meshed 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); the first clamping member (283) and 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) form a clamping structure; The first elastic member (288) is in a compressed state, and the elastic force generated by the first elastic member (288) pushes the first locking member (283) toward 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 comprises a first pinion connecting rod (27a), a second pinion connecting rod (27b), a second synchronous gear (282), a third locking member (285) and a fourth locking member (286); The sliding end (271a) of the first pinion connecting rod (27a) is slidably connected to the first fixed frame (21), the rotating end (272a) of the first pinion connecting rod (27a) is rotationally connected to the main shaft (1), the sliding end (271b) of the second pinion connecting rod (27b) is slidably connected to the second fixed frame (22), and the rotating end (272b) of the second pinion connecting rod (27b) is rotationally 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 locking member (283) and is rotatably connected to the main shaft (1); the rotating end (272a) of the first pinion connecting rod (27a) is meshed with the rotating end (272b) of the second pinion connecting rod (27b) through the second synchronous gear (282); The third locking member (285) and the fourth locking member (286) are located on the main shaft (1); the third locking member (285) is located between the first elastic member (288) and the second synchronous gear (282); the fourth locking member (286) is located on a side of the second synchronous gear (282) away from the third locking member (285); the third locking member (285), the fourth locking member (286) and the rotating end (272a) of the first pinion connecting rod (27a) and the rotating end (272b) of the second pinion connecting rod (27b) all form a locking structure; The first elastic member (288) is in a compressed state, and the elastic force generated by the first elastic member (288) also pushes the third locking member (285) toward the rotating end (272a) of the first pinion connecting rod (27a) and the rotating end (272b) of the second pinion connecting rod (27b).

13. The folding mechanism (100) according to any one of claims 1 to 12, characterized in that: The first rotating member (23) comprises 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 fixed frame (21); The first support plate (4) is slidably connected to the sliding end (232) of the first rotating member (23), and is relatively rotatable 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 supporting plate (4) also 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 supporting plate (4) are in interference fit.

14. The folding mechanism (100) according to claim 13, characterized in that: The first support plate (4) comprises a first support plate body (41) and a first movable block (42); The first support plate body (41) comprises a first fixing surface (413) and a second side surface (412) and a first side surface (411) which are arranged opposite to each other, 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) is protruding from the first fixing surface (413) of the first supporting plate body (41), and the first movable block (42) has a first inclined hole (414); The folding mechanism (100) comprises 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 portion of the pin shaft (44) passes through the first inclined hole (414), and the middle portion of the pin shaft (44) slides in the first inclined hole (414) of the first supporting plate (4) and rotates relatively; The second abutting surface (415) is a portion of the outer annular surface of the first movable block (42) that faces the first side surface (411).

15. The folding mechanism (100) according to claim 14, characterized in that: Relative to the second side surface (412), the second abutting surface (415) is disposed close to the first side surface (411).

16. The folding mechanism (100) according to claim 14 or 15, characterized in that: The second abutting surface (415) and the first fixing surface 413 are arranged at an acute angle.

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

18. The folding mechanism (100) according to claim 17, characterized in that: 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, characterized in that: The first support plate (4) comprises a first support plate body (41) and a first extension block (45); The first support plate body (41) comprises a second side surface (412) and a first side surface (411) which are arranged in opposite directions, the first side surface (411) faces the main shaft (1), and the first extension block (45) is protruding 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 portion of the main shaft (1).

20. An electronic device (1000), characterized in that: The invention comprises a first shell (300), a second shell (400), a flexible screen (200), and a folding mechanism (100) according to any one of claims 1 to 19, wherein the first fixing frame (21) is fixedly connected to the first shell (300), and the second fixing frame (22) is fixedly connected to the second shell (400); The flexible screen (200) comprises a first display area (201), a second display area (202), and a third display area (203) which are connected in sequence, the first display area (201) being fixed to the first shell (300), and the third display area (203) being fixed to the second shell (400); When the folding mechanism (100) is in an 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 a folded state, the second display area (202) is located within the screen space (100a).

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