Folding mechanism and electronic device

Abstract

The application provides 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 part, a second rotating part, a first supporting plate, a second supporting plate and a first connecting arm. The first rotating part movably connects the main shaft and the first fixing frame. The second rotating part movably connects the main shaft and the second fixing frame. The first supporting plate movably connects the first fixing frame and the first rotating part. The second supporting plate movably connects the second fixing frame and the second rotating part. The first connecting arm movably connects the first fixing frame and the main shaft. The first connecting arm has a first matching surface. The first supporting plate has a second matching surface. When the folding mechanism is in a flat state, the first matching surface of the first connecting arm and the second matching surface of the first supporting plate are in interference fit, so that the angle between the first supporting plate and the main shaft is controlled by the force between the first matching surface and the second matching surface, and the angle between the first supporting plate and the main shaft is equal to 180° as much as possible.

Description

TECHNICAL FIELD

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

[0002] Foldable mobile phones are increasingly favored by users due to their large display area in the unfolded state and small size in the folded state. The unfolded angle of the foldable mobile phone is very important for the delicacy of the whole machine, and therefore it is particularly crucial to set a folding mechanism that can accurately adjust the unfolded angle. SUMMARY

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

[0004] In a first aspect, the present application provides a folding mechanism. The folding mechanism comprises 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 being 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.

[0005] The first support plate movably connects the first fixed frame and the first rotating member, and the second support plate movably connects the second fixed frame and the second rotating member; when the folding mechanism is in an unfolded state, the first support plate and the second support plate jointly form a support surface; when the folding mechanism is in a folded state, the first support plate and the second support plate are oppositely arranged and enclose a screen space with the main shaft.

[0006] The first connecting arm movably connects the first fixed frame and the main shaft, and the first connecting arm has a first matching surface; the first support plate has a second matching surface; when the folding mechanism is in an unfolded state, the first matching surface of the first connecting arm and the second matching surface of the first support plate are in interference fit.

[0007] It can be understood that the first connecting arm and the first support plate are in interference fit, so that the first support plate generates a force in the movement direction. In this way, since the first connecting arm and the first support plate are in interference fit, the first connecting arm and the first support plate can generate a force, so that the angle between the first support plate and the main shaft is controlled, that is, the shape of the first support plate when the folding mechanism is in the unfolded state is controlled. For example, through the force between the first connecting arm and the first support plate, the angle between the first support plate and the main shaft can be equal to 180° as much as possible, so that when the folding mechanism is applied to an electronic device, the flexible screen can be fully unfolded, the appearance consistency of the flexible screen is better, and the user experience is satisfied. Therefore, the folding mechanism provided by the present application can accurately adjust the angle in the unfolded state.

[0008] It can be understood that the angle between the first support plate and the main shaft deviates from 180° by different amplitudes for different folding mechanisms when the folding mechanism is in the unfolded state. At this time, the interference amount between the first connecting arm and the first support plate can be adjusted to different degrees to adjust the angle between the first support plate and the main shaft to different degrees, so that the shape of the first support plate when the folding mechanism is in the unfolded state is better controlled. For example, for some folding mechanisms, the angle between the first support plate and the main shaft is 190° when the folding mechanism is in the unfolded state, and the amplitude deviating from 180° is large. At this time, the interference amount between the first connecting arm and the first support plate can be increased by a large amplitude, so that the angle between the first support plate and the main shaft when the folding mechanism is in the unfolded state is adjusted to a large extent, so that the angle between the first support plate and the main shaft can be 180°. For some folding mechanisms, the angle between the first support plate and the main shaft is 185° when the folding mechanism is in the unfolded state, and the amplitude deviating from 180° is small. At this time, the interference amount between the first connecting arm and the first support plate can be slightly increased, so that the angle between the first support plate and the main shaft is slightly adjusted, so that the angle between the first support plate and the main shaft can be 180°.

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

[0010] It can be understood that the third matching surface of the first connecting arm and the fourth matching surface of the first supporting plate can be in interference fit. In this way, since the third matching surface of the first connecting arm and the fourth matching surface of the first supporting plate are provided with an interference amount, an acting force F can be generated between the third matching surface of the first connecting arm and the fourth matching surface of the first supporting plate. The acting force F can make the first supporting plate open. At this time, the screen containing space surrounded by the first supporting plate, the main shaft and the second supporting plate can be increased, thereby being beneficial to improve the reliability of the flexible screen.

[0011] It can be understood that when the folding mechanism is in the folded state, the opening angle of the first supporting plate can be adjusted to different degrees by adjusting the interference amount between the third matching surface of the first connecting arm and the fourth matching surface of the first supporting plate to different degrees, thereby better controlling the size of the screen containing space.

[0012] In a possible implementation, the first supporting plate comprises a first supporting plate body, a first abutting block and a second abutting block;

[0013] The first supporting plate body comprises a first fixed surface and oppositely arranged first and second side surfaces, the first fixed surface being connected between the second side surface and the first side surface, the first fixed surface facing the first fixed frame, and the first side surface facing the main shaft;

[0014] The first abutting block is protruded from the first fixed surface, and the second matching surface is a part of surface of the first abutting block facing the first side surface;

[0015] The second abutting block is protruded from the first fixed surface, and the fourth matching surface is a part of surface of the second abutting block facing the second side surface.

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

[0017] In a possible implementation, the second matching surface is arranged close to the first side surface relative to the second side surface. In this way, the second matching surface is arranged close to the main shaft. The lap joint surface formed by the first matching surface of the first connecting arm and the second matching surface of the first supporting plate is arranged closer to the main shaft. In this way, by slightly increasing the interference amount between the first matching surface of the first connecting arm and the second matching surface of the first supporting plate, the angle between the first supporting plate and the main shaft can be adjusted to a large extent, thereby on the one hand, the form of the first supporting plate between the folding mechanism in the unfolded state and the main shaft can be better controlled, and on the other hand, the precision of adjusting the angle between the first supporting plate and the main shaft when the folding mechanism is in the unfolded state will also be higher.

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

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

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

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

[0022] It can be understood that, compared with the scheme of arranging a protrusion on the first connecting arm and forming the first fitting surface on the protrusion, the present embodiment arranges the first fitting surface by using part of the hole wall of the first through hole arranged on the first connecting arm. In this way, the first connecting arm will not increase in volume to a large extent due to the arrangement of the protrusion.

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

[0024] In a possible implementation, the folding mechanism comprises a second connecting arm movably connected with the second fixing frame and the main shaft; the second connecting arm has a second matching surface, and the second support plate has a second matching surface; and the second matching surface of the second connecting arm is in interference fit with the second matching surface of the second support plate when the folding mechanism is in the unfolded state.

[0025] It can be understood that the second matching surface of the second connecting arm is in interference fit with the second matching surface of the second support plate, so that the second support plate generates a force in the movement direction. In this way, since the second matching surface of the second connecting arm is in interference fit with the second matching surface of the second support plate, a force can be generated between the second matching surface of the second connecting arm and the second matching 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 the unfolded state. For example, through the force between the second matching surface of the second connecting arm and the second matching 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, the flexible screen is ensured to be completely unfolded, the appearance consistency of the flexible screen is better, and the experience of the user is satisfied. Therefore, the folding mechanism provided by the present application can accurately adjust the angle in the unfolded state.

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

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

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

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

[0030] The folding mechanism further comprises a first synchronous gear, a first clamping member and a first elastic member.

[0031] The first synchronizing gear is rotationally 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 synchronizing gear;

[0032] The first clamping part and the first elastic part are located on the main shaft, the first clamping part is located between the first elastic part and the first synchronizing gear, and the first clamping part and the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod form clamping structures;

[0033] The first elastic part is in a compressed state, and the elastic force generated by the first elastic part pushes the first clamping part against the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod.

[0034] 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 a plurality of first synchronizing gears, so that the rotating angle of the rotating end of the first large gear connecting rod and the rotating angle of the rotating end of the second large gear connecting rod are the same in size and opposite in direction, so that the rotating motion of the first large gear connecting rod and the second large gear connecting rod relative to the main shaft is kept synchronous, that is, they are synchronously close to or away from each other.

[0035] It can be understood that the first clamping part and the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod form clamping structures, and the elastic force generated by the first elastic part pushes the first clamping part against the rotating end of the first large gear connecting rod and the rotating end of the second large gear connecting rod, thereby providing a certain resistance during the unfolding or folding of the folding mechanism, so that the user can experience a better mechanism operation feeling.

[0036] In a possible implementation, the folding mechanism further comprises a first small gear connecting rod, a second small gear connecting rod, a second synchronizing gear, a third clamping part, and a fourth clamping part;

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

[0038] The second synchronizing gear is located on the side of the first elastic part away from the first clamping part and is rotationally connected to the main shaft, and the rotating end of the first small gear connecting rod is engaged with the rotating end of the second small gear connecting rod through the second synchronizing gear;

[0039] The third clamping part and the fourth clamping part are located on the main shaft, the third clamping part is located between the first elastic part and the second synchronizing gear, the fourth clamping part is located on the side of the second synchronizing gear away from the third clamping part, and the third clamping part, the fourth clamping part, the rotating end of the first small gear connecting rod, and the rotating end of the second small gear connecting rod form clamping structures;

[0040] The elastic force generated by the first elastic member also causes the third clamping member to abut against the rotating end of the first pinion link and the rotating end of the second pinion link.

[0041] It can be understood that the rotating end of the first pinion link and the rotating end of the second pinion link are connected through a plurality of second synchronous gears, so that the rotating angle of the rotating end of the first pinion link and the rotating angle of the rotating end of the second pinion link are the same in size and opposite in direction, so that the rotating movement of the first pinion link and the second pinion link relative to the main shaft is kept synchronous, that is, synchronous approaching or moving away from each other.

[0042] It can be understood that the rotating end of the first pinion link and the rotating end of the second pinion link are connected through a plurality of second synchronous gears, so that the rotating angle of the rotating end of the first pinion link and the rotating angle of the rotating end of the second pinion link are the same in size and opposite in direction, so that the rotating movement of the first pinion link and the second pinion link relative to the main shaft is kept synchronous, that is, synchronous approaching or moving away from each other.

[0043] 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 rotationally connected to the main shaft, and the sliding end of the first rotating member is slidingly connected to the first fixed frame.

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

[0045] The first rotating member includes a first abutting surface, and the first support plate further includes a second abutting surface, when the folding mechanism is in the unfolded state, the first abutting surface of the first rotating member is interference-fitted with the second abutting surface of the first support plate.

[0046] It can be understood that the first abutting surface of the first rotating piece abuts on the second abutting surface of the first support plate when the folding mechanism is in the unfolded state. The first abutting surface of the first rotating piece and the second abutting surface of the first support plate form an overlapping surface. The first abutting surface of the first rotating piece and the second abutting surface of the first support plate can be in interference fit to generate an acting force in the movement direction of the first support plate. In this way, since the first abutting surface of the first rotating piece and the second abutting surface of the first support plate are provided with an interference amount, an acting force can be generated between the first abutting surface of the first rotating piece and the second abutting surface of the first support plate, so that the acting 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 the unfolded state. For example, through the acting force between the first abutting surface of the first rotating piece and the second abutting 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, that is, the flexible screen is made to be completely unfolded as much as possible, and the appearance consistency of the flexible screen is better, so as to meet the experience of the user.

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

[0048] The first support plate body comprises a first fixed surface and oppositely arranged second and first side surfaces, the first fixed surface being connected between the second and first side surfaces, the first fixed surface facing the first fixed frame, and the first side surface facing the main shaft;

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

[0050] The folding mechanism comprises a pin shaft, both ends of the pin shaft being fixed on the sliding end of the first rotating piece, the middle part of the pin shaft passing through the first inclined hole, and the middle part of the pin shaft sliding in the first inclined hole of the first support plate and having relative rotation;

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

[0052] It can be understood that the first movable block can be used for connection with the first rotating piece and interference fit with the first matching surface of the first connecting arm. The first movable block has the effect of "one thing with multiple uses".

[0053] In a possible implementation, the second abutting surface is arranged close to the first side surface relative to the second side surface. In this case, the second abutting surface is arranged close to the main shaft. The overlap surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is arranged closer to the main shaft. In this way, by slightly increasing the interference between the first abutting surface of the first rotating member and the second abutting surface of the first support plate, the angle between the first support plate and the main shaft can be adjusted to a larger extent, so that on the one hand, the state of the first support plate relative to the main shaft when the folding mechanism is in the unfolded state can be better controlled, and on the other hand, the precision of the angle between the first support plate and the main shaft when the folding mechanism is in the unfolded state is also higher. For example, when the overlap surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is far away from 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 needs to be 0.5 mm, so that the angle between the first support plate and the main shaft is 180°. When the overlap 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 0.2 mm, so that the angle between the first support plate and the main shaft is 180°.

[0054] In a possible implementation, the second abutting surface is arranged at an acute angle relative to the first fixed surface. In this way, the overlap surface formed by the first abutting surface of the first rotating member and the second abutting surface of the first support plate is arranged obliquely. In this way, when the first abutting surface of the first rotating member is in interference fit with the second abutting surface of the first support plate when the folding mechanism is in the unfolded state, the force between the first abutting surface of the first rotating member and the second abutting surface of the first support plate is greater in the direction of movement (for example, the component in the Z-axis direction is greater), so that the angle between the first support plate and the main shaft when the folding mechanism is in the unfolded state can be better controlled, and the state of the first support plate relative to the main shaft when the folding mechanism is in the unfolded state can be better controlled.

[0055] In a possible implementation, the main shaft comprises a first contact surface, and the first support plate comprises a second contact surface; when the folding mechanism is in the unfolded state, the first contact surface abuts on the second contact surface. In this way, the main shaft can block the first support plate from continuing to rotate relative to the shaft, and further assist in controlling the angle between the first support plate and the main shaft, so as to avoid the first support plate from forming a "V" type included angle due to overfolding, that is, the angle between the first support plate and the main shaft is controlled to be 180° as much as possible.

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

[0057] In a possible implementation, the first support plate comprises a first support plate body and a first extension block; the first support plate body comprises a second side surface and a first side surface arranged oppositely, the first side surface faces the main shaft, and the first extension block is protruded from the first side surface; when the folding mechanism is in the unfolded state, the first extension block is arranged opposite to a part of the main shaft. In this way, when the folding mechanism falls, the first extension block can block the first support plate to prevent the first support plate from continuing to fall.

[0058] In a possible implementation, the second rotating member comprises a rotating end and a sliding end; the rotating end of the second rotating member is rotationally connected to the main shaft; the sliding end of the second rotating member is slidably connected to the second fixed frame; the second support plate is slidably connected to the sliding end of the second rotating member and is in relative rotation with the sliding end of the second rotating member; the second rotating member comprises a third abutting surface; the second support plate further comprises a fourth abutting surface; and the third abutting surface of the second rotating member is in interference fit with the fourth abutting surface of the second support plate.

[0059] It can be understood that, when the folding mechanism is in the unfolded state, the third abutting surface of the second rotating member abuts against the fourth abutting surface of the second support plate. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate form a lapping surface. The third abutting surface of the second rotating member and the fourth abutting surface of the second support plate can be in interference fit to generate an acting force in the movement direction of the second support plate. In this way, since the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate are arranged in interference, an acting force can be generated between the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate, so that the acting 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 the unfolded state. For example, through the acting force between the third abutting surface of the second rotating member and the fourth abutting surface of the second support plate, the angle between the second support plate and the main shaft can be made equal to 180° as much as possible, that is, the flexible screen is made to be unfolded as much as possible, and the appearance consistency of the flexible screen is better, so as to meet the experience of the user.

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

[0061] The flexible screen comprises 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; and when the folding mechanism is in the folded state, the second display area is located in the screen containing space.

[0062] It is understandable 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 generates a force in the direction of movement. Thus, due to the interference fit between the first mating surface of the first connecting arm and the second mating surface of the first support plate, a force can be generated between them. This 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 as close to 180° as possible, thereby ensuring that the flexible screen is completely flattened and has a better appearance consistency to meet user experience. Therefore, this application provides a folding mechanism that can precisely adjust the angle in the flattened state. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the electronic device provided in the embodiments of this application in a flattened state;

[0064] Figure 2 yes Figure 1 A partial cross-sectional schematic diagram of one embodiment of the electronic device shown at line AA;

[0065] Figure 3 yes Figure 1 A schematic diagram of one embodiment of the electronic device in a folded state;

[0066] Figure 4 yes Figure 3 A partial cross-sectional schematic diagram of one embodiment of the electronic device shown at the BB line;

[0067] Figure 5 yes Figure 1 A partially exploded view of the electronic device shown in one embodiment;

[0068] Figure 6 yes Figure 5 The folding mechanism shown is partially exploded in one embodiment.

[0069] Figure 7 yes Figure 6 The diagram shown is a structural schematic of the folding mechanism from another angle.

[0070] Figure 8 yes Figure 7 The folding mechanism shown is partially exploded in one embodiment.

[0071] Figure 9 yes Figure 7 The diagram shows a partial structural schematic of the spindle in one embodiment.

[0072] Figure 10 is a partial cross-sectional view of an embodiment of the main shaft at line C-C; Figure 9

[0073] Figure 11 is a partial exploded view of the end connection assembly in an embodiment; Figure 8

[0074] Figure 12 is a partial exploded view of the end connection assembly in another angle; Figure 11

[0075] Figure 13 is an enlarged view of the first and second rotating members; Figure 11

[0076] Figure 14 is a partial structural view of the folding mechanism in an embodiment; Figure 7 Figure 1

[0077] Figure 15 Figure 7 is a partial cross-sectional view of an embodiment of the folding mechanism at line D-D;

[0078] Figure 16 is an enlarged view of the first support plate in an embodiment at M1 ; Figure 8

[0079] Figure 17 is a partial structural view of the folding mechanism in an embodiment; Figure 7 Figure 2

[0080] Figure 18 is a structural view of the folding mechanism in another angle; Figure 17

[0081] Figure 19 is a partial cross-sectional view of an embodiment of the folding mechanism at line E-E; Figure 17

[0082] Figure 20 is a partial cross-sectional view of an embodiment of the folding mechanism at line F-F; Figure 17

[0083] Figure 21 is a partial cross-sectional view of an embodiment of the folding mechanism at line G-G; Figure 18

[0084] Figure 22 ​​​​​​​​​​​​​​is Figure 8 An enlarged schematic view of one embodiment of the first support plate at M2 is shown.

[0085] Figure 23 is Figure 11 A structural schematic view of one embodiment of the first bull gear link and the first pinion link is shown.

[0086] Figure 24 is Figure 11 A structural schematic view of one embodiment of the first pinion link and the second pinion link is shown.

[0087] Figure 25 is Figure 11 A partially exploded schematic view of one embodiment of the damper is shown.

[0088] Figure 26 is Figure 7 A partially structural schematic view of the folding mechanism in one embodiment is shown. Figure 3 ;

[0089] Figure 25 is Figure 7 A partially structural schematic view of the folding mechanism in one embodiment is shown. Figure 4 ;

[0090] Figure 28 is Figure 11 A structural schematic view of the first bull gear link in another embodiment is shown.

[0091] Figure 29 is Figure 28 A structural schematic view of the first bull gear link in another angle is shown.

[0092] Figure 30 is Figure 8 An enlarged schematic view of one embodiment of the first support plate at M3 is shown.

[0093] Figure 31 is Figure 27 A partially cross-sectional schematic view of one embodiment of the folding mechanism at H-H line is shown.

[0094] Figure 32 is Figure 3 A partially cross-sectional schematic view of one embodiment of the electronic device at I-I line is shown.

[0095] Figure 33 is Figure 11 A structural schematic view of the first bull gear link in another embodiment is shown.

[0096] Figure 34 is Figure 3A partial cross-sectional schematic view of an embodiment of the electronic device at line J-J. DETAILED DESCRIPTION

[0097] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0098] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms “mount”, “connect”, “connection”, “joint” should be understood in a broad sense, for example, “connection” can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through an intermediate medium; can be electrical connection, or can be mechanical connection. Among them, “fixed connection” refers to the relative position relationship after being connected. “Rotary connection” refers to the relative rotation after being connected. “Sliding connection” refers to the relative sliding after being connected. “Movable connection” refers to the relative movement after being connected. In addition, the integrated structure of two components obtained by one-piece forming process refers to the process of forming one of the two components, that is, the component is connected with the other component, and the two components do not need to be connected together by reprocessing (such as bonding, welding, buckle connection, screw connection) method. Component A and component B are relatively arranged, which can be that component A projects to projection C along the target direction, component B projects to projection D along the target direction, and projection C and projection D can at least mostly overlap. In some embodiments, the mostly overlap can be any of the following cases: projection C is completely located in projection D. Or, projection D is completely located in projection C. Or, projection C and projection D intersect with each other, and the intersection area of projection C and projection D accounts for more than 50% of projection C or projection D.

[0099] The orientation terms mentioned in the embodiments of the present application, such as “top”, “bottom”, “inner”, “outer” and the like, are only the directions of the drawings, therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, and are not indicative or implied that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. For those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0100] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than that illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of a kind and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the objects before and after are in a "or" relationship. "Multiple" means at least two.

[0101] Figure 1 is a structural schematic diagram of an embodiment of the electronic device 1000 in a folded state. Figure 2 is Figure 1 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at the A-A line. Figure 3 is Figure 1 is a structural schematic diagram of an embodiment of the electronic device 1000 in a folded state. Figure 4 is Figure 3 is a partial cross-sectional schematic diagram of an embodiment of the electronic device 1000 at the B-B line.

[0102] As Figures 1 to 4 shown, the present application provides a foldable electronic device 1000. The foldable electronic device 1000 can be a mobile phone, a tablet computer, a personal computer, a notebook computer, a vehicle-mounted device, or a wearable device (such as a smart bracelet) that can be folded. The embodiments of the present application take the mobile phone as an example for detailed description.

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

[0104] It can be understood that in the present 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 unfolded 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. The present embodiment is described by taking the direction of the rotation axis of the electronic device 1000 as the Y-axis direction as an example, at this time, the electronic device 1000 can be folded left and right, and the folding and unfolding 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 unfolded or folded along the X-axis direction. At this time, the electronic device 1000 can be folded up and down, and the folding and unfolding of the electronic device 1000 affects the width dimension of the electronic device 1000.

[0105] Figure 5 is Figure 1 a partial exploded view of the electronic device 1000 in an embodiment. Figure 6 is Figure 5 a partial exploded view of the folding mechanism 100 in an embodiment.

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

[0107] As shown in FIG. 1A, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other. Figure 5 Figure 6 As shown in FIG. 1A, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other.

[0108] As shown in FIG. 1A, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other. Figure 1 Figure 2 As shown in FIG. 1A, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other.

[0109] As shown in FIG. 1A, the folding mechanism 100 is connected between the first housing 300 and the second housing 400. The folding mechanism 100 is used to unfold or fold the first housing 300 and the second housing 400 relative to each other. Figure 3 Figure 4 ​​​As shown in FIG. 1, when the first housing 300 and the second housing 400 are folded relative to each other to the closed state, the electronic device 1000 is in the folded state, the first housing 300 and the second housing 400 can be folded relative to each other, and there can be no large gap between the first housing 300 and the second housing 400. In this way, the appearance experience of the electronic device 1000 is better, and the performance of waterproofing, dustproofing, and foreign matter prevention is better. The folding of the first housing 300 and the second housing 400 includes the case where the two abut against each other, and can also include the case where there is a small gap between the two. When there is a small gap between the first housing 300 and the second housing 400, some foreign matter outside the electronic device 1000 will not enter between the first housing 300 and the second housing 400 through the gap.

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

[0111] Please refer to Figure 5 , and in combination with Figures 1 to 4 As shown in FIG. 2, the flexible screen 200 includes a first display area 201, a second display area 202, and a third display area 203. The second display area 202 is connected between the first display area 201 and the third display area 203. Figure 1 , Figure 2 and Figure 5 all schematically distinguish the first display area 201, the second display area 202, and the third display area 203 with dashed lines. The first display area 201 of the flexible screen 200 is fixed to the first housing 300. The third display area 203 is fixed to the second housing 400. During the unfolding or folding of the first housing 300 and the second housing 400 relative to each other, the first housing 300 can drive the first display area 201 to move, the second housing 400 can drive the third display area 203 to move, the first display area 201 and the third display area 203 unfold or fold relative to each other, and the second display area 202 can deform.

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

[0113] As Figure 1 and Figure 2As shown, when the electronic device 1000 is in a flattened state, the flexible screen 200 can also 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 at a 180° angle. In other embodiments, the first display area 201, the second display area 202, and the third display area 203 may also have a slight deviation from 180°, such as 165°, 177°, or 185°. In this case, the flexible screen 200 has a continuous large display area, meaning the flexible screen 200 can achieve large-screen display, resulting in a better user experience.

[0114] 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. In this way, when the second display area 202 is subjected to pressing, squeezing, or impact, the folding mechanism 100 can be used to improve the pressure resistance and impact resistance of the second display area 202, that is, to ensure that the second display area 202 is not prone to dents or other problems.

[0115] like Figure 3 and Figure 4 As shown, when the electronic device 1000 is in a folded state, the flexible screen 200 is also folded. For example, the first display area 201 and the third display area 203 of the flexible screen 200 are close together. The second display area 202 is bent. At this time, the flexible screen 200 can be roughly teardrop-shaped. Furthermore, the flexible screen 200 is located within the space enclosed by the first housing 300, the folding mechanism 100, and the second housing 400. The first display area 201 and the third display area 203 are located between the first housing 300 and the second housing 400. At this time, the electronic device 1000 has a smaller planar size (a smaller width), making it easier for users to carry and store.

[0116] Figure 7 yes Figure 6 The folding mechanism 100 shown is illustrated from another angle. Figure 8 yes Figure 7 The folding mechanism 100 shown is partially exploded in one embodiment.

[0117] Please see Figure 7 and Figure 8 and combined Figure 5 and Figure 6 As shown, the folding mechanism 100 includes a main shaft 1, an end connecting assembly 2, a middle connecting assembly 3, a first support plate 4, and a second support plate 5. The main shaft 1 can extend along the Y-axis.

[0118] Exemplarily, the main shaft 1 is located between the first shell 300 and the second shell 400. The end connecting assemblies 2 connect the first shell 300, the main shaft 1 and the second shell 400. The number of the end connecting assemblies 2 is two, and the two end connecting assemblies 2 are arranged at intervals in the length extension direction of the main shaft 1, for example, can be connected to the top and bottom of the main shaft 1 respectively. It can be understood that the end connecting assemblies 2 can be used to mainly unfold or fold the first shell 300 and the second shell 400 relative to each other. The structure of the end connecting assemblies will be described in detail below in combination with the relevant drawings, and will not be described here again.

[0119] Exemplarily, the structures of the two end connecting assemblies 2 are mirror-symmetrical. At this time, since the structures of the two end connecting assemblies 2 are the same, the overall structure of the folding mechanism 100 is relatively simple, and the processing cost is low. Since the two end connecting assemblies 2 are arranged in mirror symmetry, the stress between the two end connecting assemblies 2 and the main shaft 1, the first shell 300 and the second shell 400 is relatively uniform during the rotation of the folding mechanism 100, which is beneficial to improve the reliability of the folding mechanism 100. In other embodiments, the structures of the two end connecting assemblies 2 can also be different. In other embodiments, the embodiments of the present application can also only provide one end connecting assembly 2, which is located at one end of the folding mechanism 100. It can be understood that the structure of the folding mechanism 100 can have various combinations and transformations, and the embodiments of the present application do not strictly limit this.

[0120] Exemplarily, the middle connecting assembly 3 connects the first shell 300, the main shaft 1 and the second shell 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 assembly 2 to unfold or fold the first shell 300 and the second shell 400 relative to each other. The specific structure of the middle connecting assembly 3 is not limited in the present application.

[0121] Please refer to Figure 7 and Figure 8 , and in combination with Figure 5 and Figure 6 , the first support plate 4 is located on the side of the main shaft 1 close to the first shell 300. The first support plate 4 connects the main shaft 1 and the first shell 300 through the end connecting assembly 2 and the middle connecting assembly 3. The specific connection mode of the first support plate 4 and the first shell 300, the end connecting assembly 2 will be described in detail below in combination with the relevant drawings. Here will not be described again. In addition, the specific structure of the middle connecting assembly 3 is not limited in the present embodiment, so the connection mode of the first support plate 4 and the middle connecting assembly 3 will be determined according to the specific structure of the middle connecting assembly 3. Specifically, it will not be described here again.

[0122] 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 connecting assembly 2 and the middle connecting assembly 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 the embodiment, 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 of the components and other structures outside the assembly can refer to the related solutions of the first support plate 4, while allowing the second support plate 5 and the first support plate 4 to be slightly different in the detailed structure or position arrangement of the components. Details are not repeated here.

[0123] As shown in Figure 5 and Figure 6 , for example, the main shaft 1 includes 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.

[0124] As shown in Figure 2 , when the first shell 300 and the second shell 400 are relatively unfolded to the unfolded state (i.e., the electronic device 1000 is in the unfolded state), the main shaft 1 is located between the first support plate 4 and the second support plate 5, the first support plate 4 and the second support plate 5 are opened 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, and 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 has a problem such as a pit due to external force touch, thereby significantly improving the reliability of the flexible screen 200.

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

[0126] 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, and the main shaft 1, the first support plate 4 and the second support plate 5 can enclose a screen containing space 100a. The second display area 202 of the flexible screen 200 can be located in the screen containing space 100a.

[0127] For example, the ends of the first support plate 4 and the second support plate 5 that are 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 form a triangular cross-section. The first support plate 4 and the second support plate 5 can work 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 "teardrop". In other embodiments, the shape of the cross-section formed 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 are not limited in this application.

[0128] It is understandable that regardless of whether the electronic device 1000 is in a flattened or 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, and the angle between the second display area 202 and the third display area 203. The arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 plays a crucial role in the form of the flexible screen 200 when the electronic device 1000 is in a flattened or folded state. In this application, by adjusting the structural settings and the coordination between some components of the folding mechanism 100 (including the main shaft 1, the first support plate 4, and the second support plate 5), the arrangement of the main shaft 1, the first support plate 4, and the second support plate 5 is adjusted, thereby better controlling the form of the flexible screen 200 so that the appearance of the flexible screen 200 better meets user needs, that is, the electronic device 1000 has a higher degree of refinement and a better user experience. 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, or the angle between the first support plate 4 and the second support plate 5.

[0129] like Figure 7 and Figure 8 As shown, the spindle 1 includes a first end 10a, a middle part 10b, and a second end 10c connected in sequence. The first end 10a and the second end 10c of the spindle 1 can be used to connect two end connecting assemblies 2, respectively. The middle part 10b of the spindle 1 can be used to connect the middle connecting assembly 3.

[0130] It is understood that the first end 10a and the second end 10c of the spindle 1 can have 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 spindle 1 are symmetrical structures. The basic design of the component structure of the second end 10c of the spindle 1, the design of the connection relationships between components, and the design of the connection relationships between components and other structures besides the assembly can all refer to the relevant schemes of the first end 10a of the spindle 1. At the same time, slight differences in the detailed structure or positional arrangement of the components are allowed between the first end 10a and the second end 10c of the spindle 1. Specific details will not be elaborated here. Furthermore, the structure of the middle part 10b of the base can be determined according to the structure of the middle connecting component 3. Specifically, this application does not impose any limitations.

[0131] Figure 9 yes Figure 7 The diagram shows a partial structural schematic of the spindle 1 in one embodiment.

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

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

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

[0135] Figure 10 yes Figure 9 The diagram shows a partial cross-sectional view of one embodiment of the spindle 1 at the CC line.

[0136] like Figure 9 and Figure 10As shown, the upper cover 13 is fixed on the base 11. It can be understood that the bottom surface 132 of the upper cover 13 faces the top surface 111 of the base 11. A part of the bottom surface 132 of the upper cover 13 is opposite and spaced apart from a part of the top surface 111 of the base 11, and encloses the arc-shaped slot 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 la of the main shaft 1. In an embodiment, the top surface 131 of the upper cover 13 and the top surface 111 of the base 11 can be flush.

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

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

[0139] In some embodiments, part of the protrusions (not shown in the figure) of the base 11 have a limiting effect, and this part of the protrusions is located in the active space 142 and is used to limit the end connecting assembly 2 and the middle connecting assembly 3, so as to prevent the end connecting assembly 2 and the middle connecting assembly 3 from accidentally separating from the main shaft 1, thereby improving the connection reliability and movement reliability of the end connecting assembly 2, the middle connecting assembly 3 and the main shaft 1, and making the folding mechanism 100 more reliable.

[0140] Figure 11 As shown in Figure 8 , the end connecting assembly 2 is a partially exploded schematic view in an embodiment. Figure 12 As shown in Figure 11 , the end connecting assembly 2 is a partially exploded schematic view from another angle.

[0141] As shown in Figure 11 and Figure 12As shown, the end connecting assembly 2 comprises 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.

[0142] It can be understood that the first large gear connecting rod 25 and the first small gear connecting rod 27a can both serve as the structure of the first connecting arm 20a of the folding mechanism 100. In other words, the first connecting arm 20a can comprise the first large gear connecting rod 25 or the first small gear connecting rod 27a. Of course, the first connecting arm 20a can also comprise a first connecting member at other positions of the folding mechanism 100, wherein the first connecting member movably connects the main shaft 1 and the first fixed frame 21. The present application does not limit the specific position of the first connecting arm 20a.

[0143] In addition, 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 connecting assembly 2. In other words, the second connecting arm 20b can comprise the second large gear connecting rod 26 or the second small gear connecting rod 27b. Of course, the second connecting arm 20b can also comprise a second connecting member at other positions of the folding mechanism 100, wherein the second connecting member movably connects the main shaft 1 and the second fixed frame 22. The present application does not limit the specific position of the second connecting arm 20b.

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

[0145] As shown in Figs. 1 and 2, Figure 11 and Figure 12 As shown, the first fixed frame 21 comprises a first fixed frame body 211, a plurality of through holes 212, a plurality of protrusions 213, a plurality of recesses 214, and a plurality of fastening holes 215. The plurality of through holes 212, the plurality of protrusions 213, and the plurality of recesses 214 are formed on the first fixed frame body 211. The plurality of through holes 212, the plurality of protrusions 213, and the plurality of recesses 214 are combined with each other to form a first sliding space 216, a second sliding space 217, a third sliding space 218, and an arc-shaped space 219 arranged at intervals. In addition, the plurality of fastening holes 215 are formed on the first fixed frame body 211. Among them, Figure 11 and Figure 12 The reference numerals of a part of the plurality of through holes 212, a part of the plurality of protrusions 213, a part of the plurality of recesses 214, and a part of the plurality of fastening holes 215 are schematically indicated.

[0146] It can be understood that the second fixing frame 22 and the first fixing frame 21 can be the same structure, symmetrical structure, partially symmetrical structure or different structure, and the application does not make strict limitation thereon. Exemplarily, the second fixing frame 22 and the first fixing frame 21 can be symmetrical structure. Wherein, 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 of the components and other structures outside the assembly can refer to the related solutions of the first fixing frame 21, and meanwhile, the second fixing frame 22 and the first fixing frame 21 are allowed to be slightly different in the detailed structure or position arrangement of the components.

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

[0148] As shown in Figure 14 , the first rotating part 23 comprises a rotating end 231 and a sliding end 232 connected to the rotating end 231. Exemplarily, the rotating end 231 of the first rotating part 23 can be in arc shape. The sliding end 232 of the first rotating part 23 can be in the shape of a sliding block.

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

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

[0151] Figure 7 is a partial structure schematic view of the folding mechanism 100 in one embodiment at D-D line shown in Figure 1 . Figure 15 is a partial cross-sectional schematic view of the folding mechanism 100 in one embodiment at D-D line shown in Figure 7 Figure 14 As shown in and

[0152] , the rotating end 231 of the first rotating part 23 is rotationally connected to the main shaft 1. The sliding end 232 of the first rotating part 23 is slidingly connected to the first fixing frame 21. In other embodiments, the connection manner of the first rotating part 23 to the main shaft 1 and the first fixing frame 21 is not specifically limited. Figures 13 to 15 Figure 16 As shown in

[0153] ​Exemplarily, the rotating end 231 of the first rotating piece 23 can be located in the arc-shaped slot 141 of the main shaft 1. The rotating end 231 of the first rotating piece 23 can rotate in the arc-shaped slot 141 of the main shaft 1. It can be understood that the rotating end 231 of the first rotating piece 23 is connected with the main shaft 1 through a virtual shaft, the structure of the rotating connection is relatively simple, the space occupied is small, and it is beneficial to reduce the thickness of the folding mechanism 100, so that the folding mechanism 100 and the electronic device 1000 are more easily realized thin and light. In other embodiments, the rotating end 231 of the first rotating piece 23 can also be connected with the main shaft 1 through a real shaft, and the embodiments of the present application do not make strict limitations in this regard.

[0154] Exemplarily, at least part of the sliding end 232 of the first rotating piece 23 can be located in the first sliding space 216 of the first fixed frame 21. The sliding end 232 of the first rotating piece 23 can slide in the first sliding space 216 of the first fixed frame 21.

[0155] As shown in Figure 8 , the second rotating piece 24 includes a rotating end 241 and a sliding end 242. The rotating end 241 of the second rotating piece 24 is rotatably connected with the main shaft 1. The sliding end 242 of the second rotating piece 24 is slidably connected with the second fixed frame 22. It can be understood that the second rotating piece 24 and the first rotating piece 23 can be the same structure, symmetrical structure, partially symmetrical structure or different structure, and the present application does not make strict limitations in this regard. Exemplarily, the second rotating piece 24 and the first rotating piece 23 can be symmetrical structure. The basic design of the component structure of the second rotating piece 24, the connection relationship design between the components, and the connection relationship design of the components and other structures outside the assembly can be referred to the related solutions of the first rotating piece 23. For example, the second rotating piece 24 and the first rotating piece 23 are allowed to be slightly different in the detailed structure or position arrangement of the components.

[0156] Figure 17 is Figure 7 an enlarged schematic view of an embodiment of the first support plate 4 at M1.

[0157] As shown in Figure 2 , the first support plate 4 includes a first support plate body 41, a first movable block 42 and a first rotating block 43.

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

[0159] Exemplarily, the first movable block 42 is protruded from the first fixed surface 413. The first movable block 42 has a first inclined hole 414. At this time, the first movable block 42 is substantially annular. The outer annular surface of the first movable block 42 includes a second abutting surface 415. The second abutting surface 415 is a partial surface of the outer annular surface of the first movable block 42 which is toward the right side surface 411 of the first support plate body 41.

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

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

[0162] Exemplarily, the first movable block 42 is protruded from the first fixed surface 413. The first movable block 42 has a first inclined hole 414. At this time, the first movable block 42 is substantially annular. The outer annular surface of the first movable block 42 includes a second abutting surface 415. The second abutting surface 415 is a partial surface of the outer annular surface of the first movable block 42 which is toward the right side surface 411 of the first support plate body 41.

[0163] Figure 18 is a partial structure schematic view of the folding mechanism 100 in another embodiment. Figure 17 is a structure schematic view of the folding mechanism 100 from another angle. Figure 19 .is a structure schematic view of the folding mechanism 100 from another angle. Figure 17 is a partial cross-sectional schematic view of the folding mechanism 100 in another embodiment at the line E-E. Figures 17 to 19 is a partial cross-sectional schematic view of the folding mechanism 100 in another embodiment at the line E-E. Figure 20 is a partial cross-sectional schematic view of the folding mechanism 100 in another embodiment at the line E-E. Figure 17 is a partial cross-sectional schematic view of the folding mechanism 100 in another embodiment at the line E-E.

[0164] As shown, the main shaft 1 is located between the first support plate 4 and the second support plate 5. The right side surface 411 of the first support plate body 41 is disposed toward the main shaft 1 relative to the left side surface 412 of the first support plate body 41. Figure 17

[0165] Exemplarily, the first support plate 4 is also rotatably connected to the first fixing frame 21. Exemplarily, the first rotating block 43 of the first support plate 4 can be located within the arcuate space 219 of the first fixing frame 21, and the first rotating block 43 of the first support plate 4 can rotate within the arcuate space 219 of the first fixing frame 21. It is understood that the first support plate 4 and the first fixing frame 21 are connected by a virtual axis. The rotatable connection structure is relatively simple, occupies little space, and is conducive to reducing the thickness of the folding mechanism 100, making it easier to achieve a thinner and lighter design for the folding mechanism 100 and the electronic device 1000. In some other embodiments, the first support plate 4 and the first fixing frame 21 can also be connected by a real axis, and this application embodiment does not strictly limit this. In other embodiments, the way the first support plate 4 is connected to the first fixing frame 21 is not specifically limited.

[0166] For example, a portion of the first fixing frame 21 is located on one side near the first fixing surface 413 of the first support plate body 41, and a portion is located on one side near the left side surface 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.

[0167] Figure 20 yes Figures 17 to 20 A partial cross-sectional view of one embodiment of the folding mechanism 100 shown at line FF.

[0168] like Figures 17 to 20 and Figure 6 As shown, exemplarily, the first support plate 4 is slidably connected to the sliding end 232 of the first rotating member 23, and relative rotation is possible between the first support plate 4 and the sliding end 232 of the first rotating member 23. At this time, the first support plate 4 is connected to the main shaft 1 via the first rotating member 23. Exemplarily, the first movable block 42 of the first support plate 4 passes through the first clearance hole 2321 of the sliding end 232 of the first rotating member 23. The sliding end 232 of the first rotating member 23 can be slidably connected to the first movable block 42 of the first support plate 4 via a pin 44. Furthermore, the sliding end 232 of the first rotating member 23 can rotate relative to 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 support plate 4. The middle portion of the pin 44 can slide and rotate relative to 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.

[0169] like Figures 14 to 15As shown, the second support plate 5 is rotationally connected to the second fixing frame 22. The second support plate 5 is slidingly connected to the sliding end 242 of the second rotating member 24, and the second support plate 5 and the sliding end 242 of the second rotating member 24 can rotate relative to each other. It can be understood that the second support plate 5 and the first support plate 4 can be the same structure, a mirror-symmetrical structure, a partial mirror-symmetrical structure, a central-symmetrical structure, a partial central-symmetrical structure, or different structures, which are not strictly limited in the present application. 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 of the components and other structures outside the assembly can be referred to the related solutions 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. Details are not described here.

[0170] As shown, Figures 16 to 20 The first fixing frame 21 is fixed on the first housing 300 (see Figure 20 ). The second fixing frame 22 is fixed on the second housing 400 (see Figure 21 ). Exemplarily, the first fixing frame 21 can be connected with the first housing 300 by screws. The second fixing frame 22 can be connected with the second housing 400 by screws. It can be understood that, since the first fixing frame 21 is fixed on the first housing 300, the second fixing frame 22 is fixed on the second housing 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, therefore, the first housing 300 and the second housing 400 can be connected through the first fixing frame 21, the first rotating member 23, the second rotating member 24 and the second fixing frame 22. In this way, when the electronic device 1000 switches from the unfolded state to the folded state, the first housing 300 and the second housing 400 approach each other, the first housing 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 through the first rotating member 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 through the second rotating member 24. When the electronic device 1000 switches from the folded state to the unfolded state, the first housing 300 and the second housing 400 are opened away from each other, the first housing 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 through the first rotating member 23, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 through the second rotating member 24.

[0171] It can be understood that, as Figure 18As shown, since the sliding end 232 of the first rotating member 23 is slidingly connected with the first fixed frame 21, the rotating end 231 of the first rotating member 23 is rotatably connected with the main shaft 1 (for example, the first rotating member 23 is constrained with the main shaft 1 through a virtual shaft), the sliding end 242 of the second rotating member 24 is slidingly connected with the second fixed frame 22, and the rotating end 241 of the second rotating member 24 is rotatably connected with the main shaft 1 (for example, the second rotating member 24 is constrained with the main shaft 1 through a virtual shaft), so that during the relative unfolding 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. Figure 21 As shown, since the first support plate 4 is rotatably connected with the first fixed frame 21 (for example, the first support plate 4 is constrained and limited with the first fixed frame 21 through a virtual shaft), the first support plate 4 is slidingly connected with the first rotating member 23, and there is relative rotation between the first support plate 4 and the first rotating member 23, the motion trajectory of the first support plate 4 is restricted by the first fixed frame 21 and the first rotating member 23. The second support plate 5 is rotatably connected with the second fixed frame 22 (for example, the second support plate 5 is constrained and limited with the second fixed frame 22 through a virtual shaft), the second support plate 5 is slidingly connected with the second rotating member 24, and there is relative rotation between the second support plate 5 and the second rotating member 24, the motion trajectory of the second support plate 5 is restricted by the second fixed frame 22 and the second rotating member 24. In the case that the motion trajectory of the first fixed frame 21 and the second fixed frame 22 relative to the main shaft 1 is determined, the motion trajectory of the first support plate 4 and the second support plate 5 can also be determined.

[0172] It can be understood that the first support plate 4 and the first rotating member 23 are matched through the pin shaft 44 and the first inclined hole 414, so that the control of the unfolding or closing angle of the first support plate 4 can be realized.

[0173] As shown, Figure 22As shown, when the electronic device 1000 is in the unfolded state, the first abutting surface 2324 of the first rotating piece 23 abuts on the second abutting surface 415 of the first support plate 4. The first abutting surface 2324 of the first rotating piece 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 piece 23 and the second abutting surface 415 of the first support plate 4 can be in interference fit to generate an acting force in the movement direction of the first support plate 4. In this way, since the first abutting surface 2324 of the first rotating piece 23 and the second abutting surface 415 of the first support plate 4 are provided with an interference amount, an acting force can be generated between the first abutting surface 2324 of the first rotating piece 23 and the second abutting surface 415 of the first support plate 4, so that the acting 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 unfolded state. For example, through the acting force between the first abutting surface 2324 of the first rotating piece 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 as close to 180° as possible, that is, the flexible screen 200 is as close to completely unfolded as possible, and the appearance consistency of the flexible screen 200 is better, so as to meet the user's experience.

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

[0175] In the embodiment, the second abutting surface 415 is a part of the outer ring surface of the first movable block 42 close to the right side surface 411. At this time, 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 amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be adjusted to a larger extent, so that on the one hand, the state of the first support plate 4 between the electronic device 1000 in the unfolded state and the main shaft 1 can be better controlled, and on the other hand, the accuracy of adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the unfolded state will 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 farther away from the main shaft 1, the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 needs to be set to 0.5 mm, so 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 closer to the main shaft 1, the interference amount between the first abutting surface 2324 of the first rotating member 23 and the second abutting surface 415 of the first support plate 4 is set to 0.2 mm, so that the angle between the first support plate 4 and the main shaft 1 is 180°.

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

[0177] The cooperation relationship between the second rotating member 24 and the second support plate 5 can be referred to the cooperation relationship between the first rotating member 23 and the first support plate 4 (for example, the second rotating member 24 includes a third abutting surface 2424, and the second support plate 5 further includes a fourth abutting surface 515, and the third abutting surface 2424 and the fourth abutting surface 515 are in interference fit.). Specifically, details are not repeated here. In this way, when the electronic device 1000 is in the unfolded state, the angle between the first support plate 4 and the main shaft 1 is equal to 180° as much as possible, and the angle between the second support plate 5 and the main shaft 1 can also be equal to 180° as much as possible, thereby greatly ensuring that the flexible screen 200 is fully unfolded, the appearance consistency of the flexible screen 200 is better, and the user experience is met.

[0178] Figure 8 is Figure 21 a partial cross-sectional schematic view of an embodiment of the folding mechanism 100 at G-G line.

[0179] As Figure 22 shown, the side surface 113 of the base 11 includes a first abutting surface 1131. The right side surface 411 of the first support plate 4 includes a second abutting surface 4111.

[0180] When the electronic device 1000 is in the unfolded state, the first abutting surface 1131 abuts on the second abutting surface 4111. In this way, the base 11 can block the first support plate 4 from continuing to rotate relative to the base 11, thereby assisting in controlling the angle between the first support plate 4 and the main shaft 1 to avoid the first support plate 4 from forming a “V”-shaped angle due to overfolding, that is, the angle between the first support plate 4 and the main shaft 1 is controlled to be 180° as much as possible.

[0181] Figure 21 is Figure 22 an enlarged schematic view of an embodiment of the first support plate 4 at M2.

[0182] As Figure 23 and Figure 11 shown, the first support plate 4 has a first extension block 45. The first extension block 45 is protruded on the right side surface 411 of the first support plate body 41.

[0183] As Figure 23 and Figure 23 shown, when the electronic device 1000 is in the unfolded state, the first extension block 45 of the first support plate 4 is arranged opposite to a part of the base 11. In this way, when the electronic device 1000 falls, the first extension block 45 can block the first support plate 4 to prevent the first support plate 4 from continuing to fall.

[0184] Exemplarily, the first extension block 45 of the first support plate 4 is not in contact with the base 11. In this way, the first extension block 45 of the first support plate 4 is not easily interfered with the base 11 during the unfolding or folding of the electronic device 1000.

[0185] It can be understood that the cooperation relationship between the second support plate 5 and the main shaft 1 can also refer to the cooperation relationship between the first support plate 4 and the main shaft 1. Details are not repeated here. In this way, through the cooperation between the second support plate 5 and the main shaft 1, the angle between the second support plate 5 and the main shaft 1 when the electronic device 1000 is in the unfolded state can also be assisted to be controlled, so as to avoid the second support plate 5 from forming a "V" type included angle due to over-folding.

[0186] Figure 24 is Figure 11 a structural schematic view of an embodiment of the first large gear connecting rod 25 and the first small gear connecting rod 27a.

[0187] As Figure 24 shown, the first large gear connecting rod 25 includes a sliding end 251 and a rotating end 252.

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

[0189] Exemplarily, the rotating end 252 of the first large gear connecting rod 25 further includes a first rotating shaft part 2524. The first rotating shaft part 2524 is located on the side of the first gear part 2521 away from the first protrusion 2522. The first rotating shaft part 2524 is arranged in a spaced manner with the first gear part 2521. The first rotating shaft part 2524 can be provided with a rotating hole 2525. The rotating hole 2525 of the first rotating shaft part 2524 is arranged opposite to the rotating shaft hole 2523 of the first gear part 2521.

[0190] Exemplarily, the first large gear connecting rod 25 can further include a connecting segment 253 connecting the sliding end 251 and the rotating end 252. The connecting segment 253 can be bent relative to the sliding end 251 of the first large gear connecting rod 25, so as to make the shape of the first large gear connecting rod 25 more diversified.

[0191] As Figure 24 shown, the second large gear connecting rod 26 includes a sliding end 261 and a rotating end 262.

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

[0193] Exemplarily, the rotating end 262 of the second gear rod 26 further comprises a second rotating shaft portion 2624. The second rotating shaft portion 2624 is located at the side of the second gear portion 2621 away from the second protrusions 2622. The second rotating shaft portion 2624 is arranged spaced from the second gear portion 2621. The second rotating shaft portion 2624 can be provided with a rotating hole 2625. The rotating hole 2625 of the second rotating shaft portion 2624 is arranged opposite to the rotating shaft hole 2623 of the second gear portion 2621.

[0194] Exemplarily, the second gear rod 26 can further comprise a connecting segment 263 connecting the sliding end 261 and the rotating end 262. The connecting segment 263 can be bent relative to the sliding end 261 of the second gear rod 26 to make the shape of the second gear rod 26 more diversified.

[0195] Figure 25 is Figure 11 a structural schematic view of an embodiment of the first pinion rod 27a and the second pinion rod 27b.

[0196] As Figure 25 shown, the first pinion rod 27a comprises a sliding end 271a and a rotating end 272a.

[0197] Exemplarily, the shape of the sliding end 271a of the first pinion rod 27a is substantially plate-shaped. The rotating end 272a of the first pinion rod 27a comprises a gear portion 2721a, a plurality of first protrusions 2722a and a plurality of second protrusions 2723a. The gear portion 2721a can be provided with a rotating shaft hole 2724a, and the plurality of first protrusions 2722a and the plurality of second protrusions 2723a are arranged at opposite ends of the gear portion 2721a. The plurality of first protrusions 2722a are arranged in a ring shape and spaced from each other, and arranged around the rotating shaft hole 2523 of the gear portion. The plurality of second protrusions 2723a are arranged in a ring shape and spaced from each other, and arranged around the rotating shaft hole 2523 of the gear portion. The first pinion rod 27a can be an integrally formed structural member to have higher structural strength.

[0198] As Figure 25 shown, the second pinion connecting rod 27b comprises a sliding end 271b and a rotating end 272b. It can be understood that the second pinion connecting rod 27b and the first pinion connecting rod 27a can be the same structure, symmetrical structure, partially symmetrical structure or different structure, which is not strictly limited in the present application. Exemplarily, the second pinion connecting rod 27b and the first pinion connecting rod 27a can be symmetrical structure. Wherein, 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 of the components and other structures outside the assembly can refer to the related solutions of the first pinion connecting rod 27a, while allowing the second pinion connecting rod 27b and the first pinion connecting rod 27a to be slightly different in the detailed structure or position arrangement of the components. Specifically, it will not be described here.

[0199] Figure 25 is Figure 25 a partial exploded view of an embodiment of the damping member 28.

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

[0201] Exemplarily, the number of the first synchronous gears 281 can be multiple, and the multiple first synchronous gears 281 are engaged with each other. Exemplarily, the multiple first synchronous gears 281 can be arranged in a string.

[0202] Exemplarily, the number of the second synchronous gears 282 can be multiple, and the multiple second synchronous gears 282 are engaged with each other. Exemplarily, the multiple second synchronous gears 282 can be arranged in a string.

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

[0204] As shown in Figure 25 Exemplarily, the first detent 283 includes a first detent plate 2831 and a plurality of first lug groups 2832. The plurality of first lug groups 2832 are fixed to the same side surface of the first detent plate 2831. The first detent plate 2831 includes a plurality of first through holes 2833. The plurality of first through holes 2833 are arranged at intervals. Two of the first lug groups 2832 and two of the first through holes 2833 are arranged one-to-one. Each of the first lug groups 2832 can include a plurality of first lugs 2834. The plurality of first lugs 2834 are arranged in a ring shape and at intervals. The plurality of first lugs 2834 are arranged around the first through hole 2833. A detent slot is formed between adjacent two of the first lugs 2834. The first detent 283 can be an integral structure to have high structural strength.

[0205] As shown in Figure 25 Exemplarily, the second detent 284 includes a main body 2841 and a plurality of pivot blocks 2842. The number of the pivot blocks 2842 can be four. Two of the pivot blocks 2842 are located on one side of the main body 2841 and arranged at intervals. The other two of the pivot blocks 2842 are located on the other side of the main body 2841 and arranged at intervals. Each of the pivot blocks 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 to each other.

[0206] As shown in Figure 26As shown, exemplarily, the third detent 285 includes a third detent plate 2851 and a plurality of second lug groups 2852 fixed to the same side surface of the third detent plate 2851. The third detent plate 2851 includes a plurality of third through holes 2853 arranged at intervals. Two second lug groups 2852 and two third through holes 2853 are arranged one-to-one. Each second lug group 2852 can include a plurality of second lugs 2854 arranged at intervals in a ring shape and arranged around the third through hole 2853, and a detent slot is formed between adjacent two second lugs 2854. The third detent 285 can be an integrally formed structural member to have high structural strength.

[0207] As shown, Figure 7 exemplarily, the fourth detent 286 includes a plurality of fourth through holes 2861 arranged at intervals and a plurality of third lug groups 2862. Two third lug groups 2862 and two fourth through holes 2861 are arranged one-to-one. Each third lug group 2862 can include a plurality of third lugs 2863 arranged at intervals in a ring shape and arranged around the fourth through hole 2861, and a detent slot is formed between adjacent two third lugs 2863. The fourth detent 286 can be an integrally formed structural member to have high structural strength.

[0208] As shown, Figure 3 exemplarily, the fixing plate 287 can have a plate body structure. The fixing plate 287 includes a plurality of fifth through holes 2871 arranged at intervals. Exemplarily, the arrangement shape and arrangement interval 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.

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

[0210] Figure 26 As shown, Figure 23 the folding mechanism 100 in part of an embodiment is shown in a schematic structural diagram Figure 24 .

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

[0212] Among them, the first adapter shaft 289a includes the first end part 2891a and the second end part 2892a arranged oppositely, the first end part 2891a of the first adapter shaft 289a is close to the second clamping part 284 and protrudes relative to the second clamping part 284, and the second end part 2892a of the first adapter shaft 289a is close to the fixed plate 287 and protrudes relative to the fixed plate 287. Exemplarily, the first end part 2891a of the first adapter shaft 289a can be provided with a limiting flange, which is located on the side of the second clamping part 284 away from the first clamping part 283, and can abut against the second clamping part 284 to limit. Among them, the second end part 2892a of the first adapter shaft 289a can be fixedly connected with the fixed plate 287 by welding, bonding or the like. The spring is in a compressed state.

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

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

[0215] The second adapter shaft 289b includes a first end portion 2891b and a second end portion 2892b arranged opposite to each other. The first end portion 2891b of the second adapter shaft 289b is close to and protrudes from the second clamping part 284. The second end portion 2892b of the second adapter shaft 289b is close to and protrudes from the fixed plate 287. For example, the first end portion 2891b of the second adapter shaft 289b can be provided with a limiting flange, which is located on the side of the second clamping part 284 away from the first clamping part 283, and can abut against the second clamping part 284 to achieve limiting. The second end portion 2892b of the second adapter shaft 289b can be fixedly connected to the fixed plate 287 by welding, bonding or the like. The spring is in a compressed state.

[0216] As shown in Figure 26 and shown in Figure 25 , the rotating end 252 of the first gear rod 25 is engaged with the rotating end 262 of the second gear rod 26 through a plurality of first synchronous gears 281. It can be understood that the rotating end 252 of the first gear rod 25 and the rotating end 262 of the second gear rod 26 are connected through a plurality of first synchronous gears 281, so that the rotating angle of the rotating end 252 of the first gear rod 25 and the rotating angle of the rotating end 262 of the second gear rod 26 are the same in size and opposite in direction, so that the rotating motion of the first gear rod 25 and the second gear rod 26 relative to the main shaft 1 is kept synchronous, that is, synchronous to each other or away from each other.

[0217] As shown in Figure 26 and shown in Figure 23 , the rotating end 272a of the first pinion rod 27a is engaged with the rotating end 272b of the second pinion rod 27b through a plurality of second synchronous gears 282. It can be understood that the rotating end 272a of the first pinion rod 27a and the rotating end 272b of the second pinion rod 27b are connected through a plurality of second synchronous gears 282, so that the rotating angle of the rotating end 272a of the first pinion rod 27a and the rotating angle of the rotating end 272b of the second pinion rod 27b are the same in size and opposite in direction, so that the rotating motion of the first pinion rod 27a and the second pinion rod 27b relative to the main shaft 1 is kept synchronous, that is, synchronous to each other or away from each other.

[0218] As shown in Figure 24 , the first gear portion 2521 of the rotating end 252 of the first gear rod 25 and the second gear portion 2621 of the rotating end 262 of the second gear rod 26 are located between the first clamping part 283 and the second clamping part 284. The rotating end 272a of the first pinion rod 27a and the rotating end 272b of the second pinion rod 27b are located between the third clamping part 285 and the fourth clamping part 286.

[0219] Referring to Figure 26 and Figure 27 , and as shown in Figure 7 and Figure 4 , the plurality of first protrusions 2522 of the first bull gear connecting rod 25 and the plurality of first protrusions 2834 of one of the first protrusion groups 2832 are arranged in an interlaced manner to form a clamping structure, and the plurality of second protrusions 2622 of the second bull gear connecting rod 26 and the plurality of first protrusions 2834 of the other of the first protrusion groups 2832 are arranged in an interlaced manner to form a clamping structure.

[0220] In some embodiments, the rotating end 252 of the first bull gear connecting rod 25 and the rotating end 262 of the second bull gear connecting rod 26 are clamped by the first clamping member 283 to form a clamping structure, so that the first bull gear connecting rod 25 and the second bull gear connecting rod 26 can be stopped at some positions.

[0221] In addition, the first elastic member 288 is in a compressed state, and the elastic force generated by the first elastic member 288 pushes the first clamping member 283 against the rotating end 252 of the first bull gear connecting rod 25 and the rotating end 262 of the second bull gear connecting rod 26. At this time, the first clamping member 283 cooperates with the second clamping member 284 to compress the rotating end 252 of the first bull gear connecting rod 25, the first synchronous gear 281, and the rotating end 262 of the second bull gear connecting rod 26, so that the rotating end 252 of the first bull gear connecting rod 25, the first synchronous gear 281, and the rotating end 262 of the second bull gear connecting rod 26 are stably clamped between the first clamping member 283 and the second clamping member 284.

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

[0223] Furthermore, the elastic force generated by the first elastic element 288 also pushes the third locking element 285 against the rotating end 272a of the first pinion connecting rod 27a and the rotating end 272b of the second pinion connecting rod 27b. At this time, the third locking element 285 and the fourth locking element 286 cooperate to press the rotating end 272a of the first pinion connecting rod 27a, the second synchronous gear 282, and the rotating end 272b of the second pinion connecting rod 27b, making the locking structure between the rotating end 272a of the first pinion connecting rod 27a, the second synchronous gear 282, and the rotating end 272b of the second pinion connecting rod 27b and the third locking element 285 and the fourth locking element 286 stable.

[0224] In some embodiments, a plurality of first protrusions 2722a of the first pinion connecting rod 27a and a plurality of second protrusions 2854 of the second protrusion group 2852 of the third locking member 285 are arranged alternately to form a locking structure. A plurality of second protrusions 2723a of the first pinion connecting rod 27a and a plurality of third protrusions 2863 of the third protrusion group 2862 of the fourth locking member 286 are arranged alternately to form a locking structure. Furthermore, the second pinion connecting rod 27b can also form a locking structure with both the third locking member 285 and the fourth locking member 286. The kinematic relationships between the first pinion connecting rod 27a and the third and fourth locking members 285, as well as the kinematic relationships between the second pinion connecting rod 27b and the third and fourth locking members 285, can be found in the kinematic relationship between the first large gear connecting rod 25 and the first locking member 283. Specific details will not be elaborated further.

[0225] like Figure 27 As shown, 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 small gear connecting rod 27a, the rotating end 272b of the second small gear connecting rod 27b, and the damping element 28 are all installed within 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 small gear connecting rod 27a, and the sliding end 271b of the second small gear connecting rod 27b are all located on the outside of the main shaft 1.

[0226] Exemplarily, the second clamping part 284 and the fourth clamping part 286 of the damping part 28 are fixed on the base 11 of the main shaft 1. Exemplarily, the second clamping part 284 and the fourth clamping part 286 can be locked on the main shaft 1 by fasteners (screws, pins, rivets, etc.). In this way, the other components of the damping part 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 be stably installed on the main shaft 1 and are not easy to shake or come off the main shaft 1, so as to improve the reliability of the folding mechanism 100. Among them, the rotating end 252 of the first large gear connecting rod 25 and the rotating end 272a of the first small gear connecting rod 27a are rotatably connected to the main shaft 1 through the first adapter shaft 289a, the first synchronous gear 281 and the second synchronous gear 282 are rotatably connected to the main shaft 1 through the third adapter 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 rotatably connected to the main shaft 1 through the second adapter shaft 289b.

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

[0228] It can be understood that the damping part 28 can exert damping force on 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, so as to limit 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 to a certain extent. In other words, when 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 are not subjected to a large external force, the damping part 28 can enable 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 to maintain a preset relative positional relationship, that is, the folding mechanism 100 can stop at a preset angle, and the folding mechanism 100 can maintain a flat state or a folded state, so as to improve the user experience of the folding mechanism 100 and the electronic device 1000.

[0229] Figure 27 is Figure 6 a partial structure schematic diagram of the folding mechanism 100 shown in FIG. 1 Figure 6 .

[0230] As Figure 28As shown, the sliding end 251 of the first large gear connecting rod 25 is slidably connected to the first fixed frame 21. Exemplarily, at least a portion of the sliding end 251 of the first large gear connecting rod 25 can be located within the second sliding space 217 of the first fixed frame 21. The sliding end 251 of the first large gear connecting rod 25 can slide within the second sliding space 217 of the first fixed frame 21.

[0231] Furthermore, the sliding end 261 of the second large gear connecting rod 26 is slidably connected to the second fixed frame 22. It can be understood that the connection relationship between the sliding end 261 of the second large gear connecting rod 26 and the second fixed frame 22 can be referenced to the connection relationship between the sliding end 251 of the first large gear connecting rod 25 and the first fixed frame 21. Specific details will not be elaborated here.

[0232] like Figure 11 As shown, the sliding end 271a of the first pinion link 27a is slidably connected to the first fixed frame 21. Exemplarily, at least a portion of the sliding end 271a of the first pinion link 27a can be located within the third sliding space 218 of the first fixed frame 21. The sliding end 271a of the first pinion link 27a can slide within the third sliding space 218 of the first fixed frame 21.

[0233] Furthermore, the sliding end 271b of the second pinion connecting rod 27b is slidably connected to the second fixed frame 22. It can be understood that the connection relationship between the sliding end 271b of the second pinion connecting rod 27b and the second fixed frame 22 can be referenced to the connection relationship between the sliding end 271a of the first pinion connecting rod 27a and the first fixed frame 21. Specific details will not be elaborated here.

[0234] It is understandable that, since the first fixing bracket 21 is fixed to the first housing 300 (see [link]), Figure 29 The second mounting bracket 22 is fixed to the second housing 400 (see [reference]). Figure 28Therefore, the first housing 300 and the second housing 400 can be connected via 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. Thus, when the electronic device 1000 switches from a flattened state to a folded state, the first housing 300 and the second housing 400 move closer together. The first housing 300 can drive the first fixing frame 21 to rotate relative to the main shaft 1 via the first large gear connecting rod 25 and the first small gear connecting rod 27a, and the second housing 400 can drive the second fixing frame 22 to rotate relative to the main shaft 1 via the second large gear connecting rod 26 and the second small gear connecting rod 27b. When the electronic device 1000 switches from a folded state to a flattened state, the first housing 300 and the second housing 400 open relative to each other. The first housing 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. The second housing 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.

[0235] Figure 28 yes Figure 29 The diagram shows the first large gear connecting rod 25 in another embodiment. Figure 30 yes Figure 8 The diagram shows the structure of the first large gear connecting rod 25 at another angle.

[0236] like Figure 30 and Figure 31 As shown, by way of example, the first large gear connecting rod 25 is provided with a first through hole 254. The first through hole 254 extends from the top surface 2511 of the sliding end 251 of the first large gear connecting rod 25 to the bottom surface 2512 of the sliding end 251 of the first large gear connecting rod 25.

[0237] For example, the wall of the first through hole 254 includes a first mating surface 2541. The first mating surface 2541 is a portion of the wall of the first through hole 254 near the rotating end 252 of the first large gear connecting rod 25.

[0238] For example, 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.

[0239] Figure 27 yes Figures 28 to 30 An enlarged schematic diagram of one embodiment of the first support plate 4 at M3.

[0240] like Figure 31As shown, the first support plate 4 further comprises a first abutting block 46. The first abutting block 46 protrudes from the first fixing surface 413. The first abutting block 46 comprises a second matching surface 461. The second matching surface 461 is a part of the outer surface of the first abutting block 46 facing the right side surface 411 of the first support plate body 41.

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

[0242] Exemplarily, the second matching surface 461 is disposed obliquely towards the right side surface 411 of the first support plate body 41. At this time, the second matching surface 461 is disposed at an acute angle with the first fixing surface 413.

[0243] Figure 29 is Figure 30 A partial cross-sectional schematic view of an embodiment of the folding mechanism 100 at the H-H line.

[0244] Please refer to Figure 30 , and in combination with Figure 32 As shown, when the electronic device 1000 is in the unfolded state, at least part of the first abutting block 46 of the first support plate 4 is located in the first through hole 254 of the first gear connecting rod 25, and the first matching surface 2541 of the first gear connecting rod 25 abuts on the second matching surface 461 of the first support plate 4. The first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 form a lapping surface.

[0245] Exemplarily, the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 can be interference fit to generate an acting force in the movement direction of the first support plate 4. In this way, since the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 are provided with an interference amount, an acting force can be generated between the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4, so that the angle between the first support plate 4 and the main shaft 1 is controlled by using the acting force, that is, the shape of the first support plate 4 when the electronic device 1000 is in the unfolded state is controlled. For example, by the acting force between the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4, the angle between the first support plate 4 and the main shaft 1 can be made equal to 180° as much as possible, so as to ensure that the flexible screen 200 is completely unfolded, the appearance consistency of the flexible screen 200 is better, and the user experience is satisfied.

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

[0247] In the present embodiment, when the electronic device 1000 is in the unfolded state, the damping member 28 exerts a damping force on the first large gear connecting rod 25. In this way, the first large gear connecting rod 25 is not easy to rotate relative to the main shaft 1 under the action of the damping force, that is, the first large gear connecting rod 25 can be better in the locked state. At this time, the first matching surface 2541 of the first large gear connecting rod 25 and the second matching surface 461 of the first support plate 4 are better in stability of interference fit.

[0248] In the embodiment, the second matching surface 461 is arranged close to the right side surface 411 of the first support plate body 41. At this time, the second matching surface 461 is arranged close to the main shaft 1. The lap surface formed by the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 is arranged closer to the main shaft 1. In this way, by slightly increasing the interference amount between the first matching surface 2541 of the first gear connecting rod 25 and the second matching 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 larger extent, so that on the one hand, the state of the first support plate 4 between the electronic device 1000 in the unfolded state and the main shaft 1 can be better controlled, and on the other hand, the precision of adjusting the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the unfolded state will also be higher. For example, when the lap surface formed by the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 is far away from the main shaft 1, the interference amount between the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 needs to be set to 0.5 mm, so that the angle between the first support plate 4 and the main shaft 1 is 180°. When the lap surface formed by the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 is close to the main shaft 1, the interference amount between the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 is set to 0.2 mm, so that the angle between the first support plate 4 and the main shaft 1 is 180°.

[0249] In the embodiment, by arranging the first matching surface 2541 to be inclined towards the rotating end 252 of the first gear connecting rod 25, and arranging the second matching surface 461 to be inclined towards the right side surface 411 of the first support plate body 41, the lap surface formed by the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 is arranged to be inclined. In this way, when the first matching surface 2541 of the first gear connecting rod 25 is in interference fit with the second matching surface 461 of the first support plate 4 when the electronic device 1000 is in the unfolded state, the force between the first matching surface 2541 of the first gear connecting rod 25 and the second matching surface 461 of the first support plate 4 in the movement direction is larger (for example, the component in the Z-axis direction is larger), so that the angle between the first support plate 4 and the main shaft 1 when the electronic device 1000 is in the unfolded state can be better controlled, and the state of the first support plate 4 between the electronic device 1000 in the unfolded state and the main shaft 1 can be better controlled.

[0250] It can be understood that, as Figure 3As shown, the matching relationship between the second support plate 5 and the second gear connecting rod 26 can also refer to the matching relationship between the first support plate 4 and the first gear connecting rod 25 (for example, the second gear connecting rod 26 has a second matching surface 2641, the second support plate 5 has a second matching surface 561, and the second matching surface 2641 of the second gear connecting rod 26 is in interference fit with the second matching surface 561 of the second support plate 5 when the electronic device 1000 is in the unfolded state, so as to generate an acting force in the movement direction of the second support plate 5). Details are not repeated here. In this way, through the matching of the second support plate 5 and the second gear connecting rod 26, the angle between the second support plate 5 and the main shaft 1 can be equal to 180° as much as possible when the electronic device 1000 is in the unfolded state, and the angle between the second support plate 5 and the main shaft 1 can also be equal to 180° as much as possible, thereby greatly ensuring that the flexible screen 200 is fully unfolded, the appearance consistency of the flexible screen 200 is better, and the user experience is satisfied.

[0251] It can be understood that the above specifically introduces the matching relationship between the first gear connecting rod 25 and the first support plate 4 and the matching relationship between the second gear connecting rod 26 and the second support plate 5 when the electronic device 1000 is in the unfolded state. In other embodiments, the matching relationship between the first pinion connecting rod 27a and the first support plate 4 when the electronic device 1000 is in the unfolded state can also refer to the matching relationship between the first gear connecting rod 25 and the first support plate 4. The matching relationship between the second pinion connecting rod 27b and the second support plate 5 can also refer to the matching relationship between the second gear connecting rod 26 and the second support plate 5. Details are not repeated here.

[0252] It can be understood that the matching relationship between the first connecting arm 20a at other positions of the folding mechanism 100 and the first support plate 4 when the electronic device 1000 is in the unfolded state can also refer to the matching relationship between the first gear connecting rod 25 and the first support plate 4. In addition, the matching relationship between the second connecting arm 20b at other positions of the folding mechanism 100 and the second support plate 5 can also refer to the matching relationship between the second gear connecting rod 26 and the second support plate 5. Details are not repeated here.

[0253] It can be 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 piece 23 and the first support plate 4. Specifically, the sliding end 251 of the first large gear connecting rod 25 is slidingly 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 have relative rotation. 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 piece 23 and the first support plate 4. Specifically, the sliding end 271a of the first small gear connecting rod 27a is slidingly 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 have relative rotation.

[0254] As shown in Figure 32 , exemplarily, the hole wall of the first through hole 254 includes a third matching surface 2542. The third matching surface 2542 is a part of the hole wall of the first through hole 254 away from the rotating end 252 of the first large gear connecting rod 25.

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

[0256] As shown in Figure 32 , the first support plate 4 further includes a second abutting block 47. The second abutting block 47 is protruded from the first fixed surface 413. The second abutting block 47 includes a fourth matching surface 471. The fourth matching surface 471 is a part of the outer surface of the second abutting block 47 facing the left side surface 412 of the first support plate body 41. Figure 33 The second abutting block 47 and the first abutting block 46 are schematically distinguished by a dashed line.

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

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

[0259] Exemplarily, the second abutting block 47 is connected to the first abutting block 46, that is, the second abutting block 47 and the first abutting block 46 can form an 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 the space utilization rate is higher. In addition, the forming process of the first abutting block 46 and the second abutting block 47 is also relatively simple.

[0260] Figure 11 is Figure 34A partial cross-sectional schematic diagram of one embodiment of the electronic device 1000 shown at line II.

[0261] like Figure 3 As shown, when the electronic device 1000 is in a folded state, at least a portion of the second abutment 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.

[0262] For example, 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-fitted. Thus, due to 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, a force F can be generated between them. The component of force F in the positive X-axis direction can cause the first support plate 4 to open along the positive X-axis direction. At this time, the screen-accommodating space 100a enclosed by the first support plate 4, the main shaft 1, and the second support plate 5 can be increased, thereby improving the reliability of the flexible screen 200. It is understood that... Figure 34 The direction of one implementation of the force F is schematically shown by a dashed line with an arrow.

[0263] It is understandable 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, thereby better controlling the size of the screen space 100a.

[0264] Understandably, when the electronic device 1000 is in the folded state, the damping element 28 applies a damping force to the first large gear connecting rod 25. Thus, the first large gear connecting rod 25 is less likely to rotate relative to the main shaft 1 under the action of the damping force, meaning the first large gear connecting rod 25 can be well kept in the locked state. At this time, 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 has better stability.

[0265] In the embodiment, the third matching surface 2542 is arranged at an acute angle with the top surface 2511 of the sliding end 251 of the first large gear connecting rod 25, and the fourth matching surface 471 is arranged at an acute angle with the first fixed surface 413, so that the overlapping surface formed by the third matching surface 2542 of the first large gear connecting rod 25 and the fourth matching surface 471 of the first support plate 4 is arranged at an inclination. In this way, when the third matching surface 2542 of the first large gear connecting rod 25 is in interference fit with the fourth matching 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 matching surface 2542 of the first large gear connecting rod 25 and the fourth matching surface 471 of the first support plate 4 in the X-axis direction is larger, so that the first support plate 4 can be opened at a larger angle in the positive direction of the X-axis. At this time, the screen space 100a surrounded by the first support plate 4, the main shaft 1, and the second support plate 5 can be larger, thereby more favorably improving the reliability of the flexible screen 200.

[0266] The foregoing specifically describes the cooperation between the first large gear connecting rod 25 and the first support plate 4 when the electronic device 1000 is in the folded state in combination with the relevant drawings. The cooperation between the second large gear connecting rod 26 and the second support plate 5 when the electronic device 1000 is in the folded state can be understood with reference to the cooperation between the first large gear connecting rod 25 and the first support plate 4 when the electronic device 1000 is in the folded state. Specifically, no further description is given here. In this way, when the electronic device 1000 is in the folded state, the first support plate 4 is opened in the positive direction of the X-axis, and the second support plate 5 is opened in the negative direction of the X-axis. At this time, the screen space 100a surrounded by the first support plate 4, the main shaft 1, and the second support plate 5 can be larger, thereby more favorably improving the reliability of the flexible screen 200.

[0267] It can be understood that the foregoing specifically describes the cooperation between the first large gear connecting rod 25 and the first support plate 4 and the cooperation 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 combination with the relevant drawings. In other embodiments, the cooperation between the first small gear connecting rod 27a and the first support plate 4 when the electronic device 1000 is in the folded state can be understood with reference to the cooperation between the first large gear connecting rod 25 and the first support plate 4. The cooperation between the second small gear connecting rod 27b and the second support plate 5 can be understood with reference to the cooperation between the second large gear connecting rod 26 and the second support plate 5. Specifically, no further description is given here.

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

[0269] Figure 33 is Figure 34 The first gear connecting rod 25 shown in the structural schematic diagram of another embodiment.

[0270] As ​ shown, the sliding end 251 of the first gear connecting rod 25 is provided with a first accommodating groove 2543. The opening of the first accommodating groove 2543 is formed on the bottom surface 2512 of the sliding end 251 of the first gear connecting rod 25.

[0271] The first gear connecting rod 25 includes a bearing surface 2544. The bearing surface 2544 is away from the rotating end 252 of the first gear connecting rod 25. The bearing surface 2544 can be a part of the groove wall of the first accommodating groove 2543 away from the rotating end 252 of the first gear connecting rod 25.

[0272] ​ is ​ The partial cross-sectional schematic diagram of one embodiment of the electronic device 1000 at J-J line.

[0273] As ​ shown, the first support plate 4 has a second extension block 48. The second extension block 48 is protruded on the right side surface 411 of the first support plate body 41.

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

[0275] Exemplarily, the second extension block 48 of the first support plate 4 is not in contact with the bearing surface 2544 of the first gear wheel link 25. In this way, the second extension block 48 of the first support plate 4 is not easily interfered with the first gear wheel link 25 during the folding or unfolding of the folding mechanism 100.

[0276] It can be understood that the cooperation relationship between the second support plate 5 and the second gear wheel link 26 can also refer to the cooperation relationship between the first support plate 4 and the first gear wheel link 25. Details are not repeated here. In this way, by the cooperation between the second support plate 5 and the second gear wheel link 26, the second support plate 5 can also be prevented from falling towards the main shaft 1, thereby avoiding the second support plate 5 from driving the flexible screen 200 to fall during the falling process, so as to ensure that the electronic device 1000 has better reliability.

[0277] It can be understood that the cooperation relationship between the first gear wheel link 25 and the first support plate 4 when the electronic device 1000 is in the folded state, and the cooperation relationship between the second support plate 5 and the second gear wheel link 26 are specifically introduced above in combination with the related drawings. In other embodiments, the cooperation relationship between the first gear wheel link 25 and the first support plate 4 when the electronic device 1000 is in the folded state can also refer to the cooperation relationship between the first gear wheel link 25 and the first support plate 4. The cooperation relationship between the second gear wheel link 26 and the second support plate 5 can also refer to the cooperation relationship between the second gear wheel link 26 and the second support plate 5. Details are not repeated here.

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

[0279] It should be noted that all the above-mentioned drawings are exemplary drawings of the present application, and do not represent the actual size of the product. The size ratio relationship between the components in the drawings is not limited to the actual product of the present application. The above are only some embodiments and implementation manners of the present application, and the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A folding mechanism (100), characterized in that, It includes a main shaft (1), a first fixed frame (21), a second fixed frame (22), a first rotating component (23), a second rotating component (24), a first support plate (4), a second support 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 component (23) is movably connected to the main shaft (1) and the first fixed frame (21), and the second rotating component (24) is movably connected to 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), and 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 the unfolded state, the first support plate (4) and the second support plate (5) together form a support surface (100b). When the folding mechanism (100) is in the folded state, the first support plate (4) and the second support plate (5) are arranged opposite to each other and together with the main shaft (1) enclose a screen-accommodating space (100a). The first connecting arm (20a) is movably connected to the first fixed frame (21) and the main shaft (1). The first connecting arm (20a) has a first mating surface (2541), and the first support plate (4) has a second mating surface (461). When the folding mechanism (100) is in a flattened state, the first mating surface (2541) of the first connecting arm (20a) and the second mating surface (461) of the first support plate (4) are interference-fitted.

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

3. The folding mechanism (100) according to claim 2, characterized in that, The first support plate (4) includes a first support plate body (41), a first abutting block (46) and a second abutting block (47); The first support plate body (41) includes a first fixing surface (413) and a first side surface (411) and a second side surface (412) disposed 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 abutment block (46) protrudes from the first fixing surface (413), and the second mating surface (461) is the part of the first abutment block (46) facing the first side surface (411); The second abutment block (47) protrudes from the first fixing surface (413), and the fourth mating surface (471) is a portion of the surface of the second abutment block (47) facing the second side surface (412).

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

5. The folding mechanism (100) according to claim 3, characterized in that, The second mating surface (461) is located close to the first side surface (411) relative to the second side surface (412).

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

7. The folding mechanism (100) according to any one of claims 3 to 5, characterized in that, The first connecting arm (20a) is provided with a first through hole (254), and when the folding mechanism (100) is in the flattened state, at least a portion of the first abutment block (46) is located in the first through hole (254); The first mating surface (2541) of the first connecting arm (20a) is part of the hole wall of the first through hole (254).

8. The folding mechanism (100) according to any one of claims 1 to 5, characterized in that, The first connecting arm (20a) also has a bearing surface (2544); When the folding mechanism (100) is in the folded state, the bearing surface (2544) is positioned opposite to a portion of the first support plate (4).

9. The folding mechanism (100) according to any one of claims 1 to 5, characterized in that, The folding mechanism (100) includes a second connecting arm (20b), which is movably connected to the second fixing frame (22) and the main shaft (1). The second connecting arm (20b) has a second mating surface (2641), and the second support 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 support plate (5) are interference-fitted.

10. The folding mechanism (100) according to claim 9, characterized in that, The folding mechanism (100) includes a damping element (28) disposed on the main shaft (1) and the damping element (28) is used to apply damping force to the first connecting arm (20a) and the second connecting arm (20b).

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

12. The folding mechanism (100) according to claim 11, characterized in that, The folding mechanism (100) further includes a first pinion link (27a), a second pinion link (27b), a second synchronizing 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 rotatably 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 rotatably connected to the main shaft (1); The second synchronous gear (282) is located on the 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) meshes 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 the side of the second synchronous gear (282) away from the third locking member (285). The third locking member (285) forms a locking structure with the rotating end (272a) of the first pinion connecting rod (27a) and the rotating end (272b) of the second pinion connecting rod (27b). The fourth locking member (286) forms a locking structure with the rotating end (272a) of the first pinion connecting rod (27a) and the rotating end (272b) of the second pinion connecting rod (27b). When the first elastic element (288) is in a compressed state, the elastic force generated by the first elastic element (288) will also push the third locking element (285) against 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 claim 1 or 2, characterized in that, The first rotating member (23) includes a rotating end (231) and a sliding end (232). The rotating end (231) of the first rotating member (23) is rotatably connected to the main shaft (1), and the sliding end (232) of the first rotating member (23) is slidably connected to the first fixed frame (21). The first support plate (4) is slidably connected to the sliding end (232) of the first rotating member (23), and there is relative rotation between the first rotating member (23) and the sliding end (232); The first rotating member (23) includes a first abutting surface (2324), and the first support 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 support plate (4) are in an interference fit.

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

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

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

17. The folding mechanism (100) according to any one of claims 1 to 5, characterized in that, The main shaft (1) includes a first contact surface (1131), and the first support plate (4) includes a second contact surface (4111). When the folding mechanism (100) is in a flattened state, the first contact surface (1131) abuts against the second contact surface (4111).

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

19. The folding mechanism (100) according to claim 1 or 2, characterized in that, The first support plate (4) includes a first support plate body (41) and a first extension block (45); The first support plate body (41) includes a second side (412) and a first side (411) arranged opposite to each other. The first side (411) faces the main shaft (1), and the first extension block (45) protrudes from the first side (411). When the folding mechanism (100) is in a flattened state, the first extension block (45) is positioned opposite to a portion of the main shaft (1).

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

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