Foldable mechanism and foldable terminal

Abstract

The application provides a foldable mechanism and a foldable terminal. In the foldable mechanism, an elastic stopper is installed on a base, a first clamping part and a second clamping part of the elastic stopper are respectively arranged on opposite sides of the elastic stopper, a first rotating part of a first swing arm is rotationally connected to the base and located on a side of the elastic stopper close to the first clamping part, a third clamping part of the first rotating part is arranged on a peripheral surface of the first rotating part, a second swing arm comprises a second rotating part, the second rotating part is rotationally connected to the base and located on a side of the elastic stopper close to the second clamping part, the second rotating part is provided with a fourth clamping part, and the fourth clamping part is arranged on a peripheral surface of the second rotating part. When the foldable mechanism is in a flat state, the first swing arm and the second swing arm are relatively flat, the first clamping part and the third clamping part are clamped with each other, and the second clamping part and the fourth clamping part are clamped with each other, so as to ensure the flat holding force of the foldable mechanism.

Description

Technical Field

[0001] This application relates to the field of foldable terminal technology, and more particularly to a foldable mechanism and a foldable terminal. Background Technology

[0002] With the advancement of technology, the era of large-screen smart terminals has arrived, and foldable terminals are favored by users for their advantages such as large screens and portability. Currently, foldable terminals often use folding mechanisms to achieve folding and unfolding. However, when the folding mechanism is in the flattened state, its flattening holding force is poor, which cannot effectively support the display module. This can cause the display module to sag or sink, reducing the reliability of the foldable terminal. Summary of the Invention

[0003] This application provides a foldable mechanism and a foldable terminal to improve the flattening and holding force of the foldable mechanism, achieve effective support for the display module, avoid the display module from sinking or sag, and ensure the reliability of the foldable terminal.

[0004] In a first aspect, this application provides a foldable mechanism, including a base, an elastic stop, a first swing arm, and a second swing arm. The elastic stop is mounted on the base and has a first holding portion and a second holding portion, which are respectively located on opposite sides of the elastic stop. The first swing arm includes a first rotating portion, which is rotatably connected to the base and located on the side of the elastic stop closer to the first holding portion. The first rotating portion has a third holding portion, which is located on the circumferential surface of the first rotating portion. The second swing arm includes a second rotating portion, which is rotatably connected to the base and located on the side of the elastic stop closer to the second holding portion. The second rotating portion has a fourth holding portion, which is located on the circumferential surface of the second rotating portion.

[0005] When the foldable mechanism is in the flattened state, the first swing arm and the second swing arm are relatively flattened, the first locking part and the third locking part lock each other, and the second locking part and the fourth locking part lock each other, so as to restrict the rotation of the first swing arm and the second swing arm relative to the base, thereby realizing the flattening stop function of the foldable mechanism.

[0006] The elastic stop, the first swing arm, and the second swing arm can improve the flattening and holding force of the foldable mechanism. The foldable mechanism can effectively support the display module in the foldable terminal, avoid the display module from sinking or denting, and ensure the reliability of the foldable terminal.

[0007] In one embodiment, the first rotating part is further provided with a fifth holding part, which is disposed on the circumferential surface of the first rotating part;

[0008] When the foldable mechanism is in a hovering state, the first locking part and the third locking part are spaced apart and lock together with the fifth locking part. When the foldable mechanism is in the hovering state, the unfolding angle of the foldable mechanism is greater than or equal to 0 degrees and less than 180 degrees, or the unfolding angle of the foldable mechanism is greater than 180 degrees and less than or equal to 360 degrees.

[0009] The design of the fifth holding part can not only provide the torque of the foldable mechanism and improve the feel of the foldable terminal, but also cooperate with the first holding part to realize the stop and suspension of the foldable mechanism, thereby improving the user experience of the foldable terminal.

[0010] In one embodiment, there are multiple fifth holding portions, which are arranged circumferentially around the first rotating portion.

[0011] When the foldable mechanism is in a hovering state, the first locking part and one of the fourth locking parts lock each other to achieve the stop and hovering of the foldable mechanism at multiple unfolding angles.

[0012] In one embodiment, the first holding part is a protruding pin, which is disposed on the surface of the elastic stop member facing the first rotating part, and the third holding part is a groove, the opening of which is located on the circumferential surface of the first rotating part.

[0013] Alternatively, the first holding part is a groove, the opening of which is located on the surface of the elastic stop member facing the first rotating part, and the third holding part is a protruding pin, which is provided on the circumferential surface of the first rotating part;

[0014] When the foldable mechanism is in the flattened state, the protruding pin and the groove engage with each other to restrict the rotation of the first swing arm relative to the base, thereby achieving the function of stopping the flattening of the foldable mechanism.

[0015] In one embodiment, the groove includes a first groove bottom wall and two first groove side walls. The two first groove side walls are located on opposite sides of the first groove bottom wall and are connected to the first groove bottom wall. The distance between the two first groove side walls gradually increases along the direction of the opening of the groove from the first groove bottom wall.

[0016] During the rotation of the first swing arm relative to the base, the two sidewalls of the first groove can not only guide the protruding pin into the groove, but also guide the protruding pin out of the groove, reducing the feeling of jamming during the rotation of the first swing arm relative to the base and improving the smoothness of the rotation of the foldable mechanism.

[0017] In one embodiment, the protruding pin includes a first top surface, two first side surfaces, and two first mating surfaces. The first top surface is the surface of the protruding pin facing the groove. The two first side surfaces are located on opposite sides of the first side surfaces and are arranged back to back. Each first mating surface is connected between the first top surface and one of the first side surfaces. Along the direction from the first top surface to the first side surface, the distance between the two first mating surfaces gradually increases.

[0018] During the rotation of the first swing arm relative to the base, the protruding pin can enter the groove under the guidance of the two first mating surfaces, reducing the feeling of jamming during the rotation of the first swing arm relative to the base and improving the smoothness of rotation of the foldable mechanism.

[0019] In one embodiment, the elastic stop includes a first leaf spring, which includes a first leaf spring portion and a second leaf spring portion. The first leaf spring portion is mounted on the base, and the second leaf spring portion is mounted on the side of the first leaf spring portion opposite to the second rotating portion. The first retaining portion is disposed on the surface of the second leaf spring portion opposite to the first leaf spring portion.

[0020] The first leaf spring adopts a combination structure of the first leaf spring part and the second leaf spring part, which can increase the overall stiffness of the first leaf spring, thereby increasing the stopping stiffness of the elastic stop member.

[0021] In one embodiment, the base is provided with a first mounting groove, and the first leaf spring is mounted in the first mounting groove. The first leaf spring includes two first fixed parts and a first elastic part. Along the length direction of the base, the two first fixed parts are spaced apart and opposite to each other, and both abut against the groove wall of the first mounting groove. The first elastic part is located on the same side of the two first fixed parts and is fixedly connected between the two first fixed parts. The second leaf spring is provided on the surface of the first elastic part facing the first fixed part.

[0022] In this configuration, the first leaf spring is shaped like the letter "U". The two first fixing parts and the first elastic part form two "L"-shaped barb structures. Both first fixing parts abut against the sidewall of the first mounting groove to restrict the movement of the first leaf spring in the width and length directions of the first mounting groove on the base, ensuring the stable assembly of the first leaf spring on the base.

[0023] In one embodiment, the foldable mechanism further includes a cover plate mounted on the base and covering at least a portion of the resilient stop to protect the resilient stop and prevent other components from affecting its normal operation.

[0024] In one embodiment, the cover plate is provided with a first clearance notch and a second clearance notch, both of which penetrate the cover plate along its thickness direction. The first clearance notch avoids the first swing arm, and the second clearance notch avoids the second swing arm, so as to avoid interference between the cover plate and the first and second swing arms and ensure the smooth rotation of the foldable mechanism.

[0025] In one embodiment, the foldable mechanism further includes a first fixed frame, a second fixed frame, a first pressure plate, and a second pressure plate. The first fixed frame is slidably connected to the first swing arm, the second fixed frame is slidably connected to the second swing arm, the first pressure plate is rotatably connected to the first fixed frame, and the second pressure plate is rotatably connected to the second fixed frame.

[0026] When the foldable mechanism is in the flattened state, the first swing arm and the second swing arm are relatively flattened, the first fixing frame and the second fixing frame are respectively located on opposite sides of the base, the first pressure plate and the second pressure plate are respectively located on opposite sides of the base, the top surface of the first fixing frame is flush with the top surface of the first pressure plate, and the top surface of the second fixing frame is flush with the top surface of the second pressure plate, so as to jointly support the display module, ensure that the foldable mechanism effectively supports the display module, avoid the display module from sinking or sag, avoid the display module from having problems such as flatness and light shadow difference, low strength and reliability, and ensure the reliability of the foldable terminal.

[0027] In one embodiment, when the foldable mechanism is in the inward folded state, the first swing arm and the second swing arm are folded relative to each other. The first fixing frame, the second fixing frame, the first pressure plate, and the second pressure plate are located on the same side of the base. The first fixing frame, the first pressure plate, the base, the second fixing frame, and the second pressure plate enclose a clearance space. The cross-section of the clearance space is teardrop-shaped to avoid the display module, thereby preventing interference between the foldable mechanism and the display module. This can prevent the foldable mechanism from damaging the foldable part and ensure the reliability of the foldable terminal.

[0028] In one embodiment, when the foldable mechanism is in the outward folded state, the first swing arm and the second swing arm are folded back to back. The first fixing frame, the second fixing frame, the first pressure plate, and the second pressure plate are located on the same side of the base. The top surfaces of the base, the first fixing frame, the first pressure plate, the second fixing frame, and the second pressure plate are flush to jointly support the display module, ensuring that the foldable mechanism effectively supports the display module, avoiding the problem of the display module sinking or sags, and avoiding problems such as flatness and light shadow differences, low strength and reliability of the display module, thus ensuring the reliability of the foldable terminal.

[0029] Secondly, this application provides a foldable terminal, including a first housing, a second housing, and any of the foldable mechanisms described above, wherein the foldable mechanism is connected between the first housing and the second housing.

[0030] When the foldable terminal described in this application is in a flattened state, the first swing arm and the second swing arm are relatively flattened, the first locking part and the third locking part are mutually locked, and the second locking part and the fourth locking part are mutually locked, so as to restrict the rotation of the first swing arm and the second swing arm relative to the base, thereby realizing the flattening and stopping effect of the foldable terminal.

[0031] In one embodiment, the foldable terminal further includes a display module, which includes a first display portion, a second display portion, and a foldable portion. The first display portion is mounted on the first housing, the second display portion is mounted on the second housing, and the foldable portion is connected between the first display portion and the second display portion and is disposed opposite to the foldable mechanism.

[0032] The elastic stop, the first swing arm, and the second swing arm can improve the flattening and holding force of the foldable mechanism. The foldable mechanism can effectively support the foldable part, avoid the display module from sinking or denting, and ensure the reliability of the foldable terminal. Attached Figure Description

[0033] To more clearly illustrate the technical solution of this application, the accompanying drawings used in this application will be described below.

[0034] Figure 1 This is a schematic diagram of the foldable terminal provided in this application in its inward folded state;

[0035] Figure 2 yes Figure 1 The diagram shows the structure of the foldable terminal in its flattened state.

[0036] Figure 3 yes Figure 2 The diagram shows the structure of the foldable terminal in its outward folded state.

[0037] Figure 4 yes Figure 2 A schematic diagram of the folding mechanism of the foldable device in the foldable terminal shown;

[0038] Figure 5 yes Figure 4 An exploded view of the foldable mechanism shown.

[0039] Figure 6 yes Figure 5 A schematic diagram of the base structure in the foldable mechanism shown;

[0040] Figure 7 yes Figure 5 The diagram shows the structural schematic of the connecting components in the foldable mechanism.

[0041] Figure 8 yes Figure 7 A schematic diagram of the structure of the third swing arm in the connecting assembly shown;

[0042] Figure 9 yes Figure 8 The exploded structural diagram of the third swing arm is shown.

[0043] Figure 10 yes Figure 7 A schematic diagram of the fifth swing arm in the connecting assembly shown;

[0044] Figure 11 yes Figure 10 The exploded structural diagram of the fifth swing arm is shown below;

[0045] Figure 12 yes Figure 5 A schematic diagram of the damping component and the synchronization component in the foldable mechanism shown;

[0046] Figure 13 yes Figure 5 The diagram shows the structural schematic of the pressure plate assembly in the foldable mechanism.

[0047] Figure 14 yes Figure 5 The diagram shows the structural schematic of the stop assembly of the foldable mechanism.

[0048] Figure 15 yes Figure 14 A schematic diagram of the elastic stop component in the stop assembly shown.

[0049] Figure 16 yes Figure 15 A schematic diagram of the cross-sectional structure of the elastic stop member after it is cut along point II.

[0050] Figure 17 yes Figure 14 A schematic diagram of the structure of the first swing arm in the stop assembly shown;

[0051] Figure 18 yes Figure 17 A schematic diagram of the cross-sectional structure of the first swing arm shown;

[0052] Figure 19 yes Figure 5 A schematic diagram of the cover plate in the foldable mechanism is shown.

[0053] Figure 20 yes Figure 1 A schematic diagram of the folding mechanism of the foldable device in the foldable terminal shown;

[0054] Figure 21 yes Figure 20 A schematic diagram of the cross-sectional structure of the foldable mechanism after it is cut along point II-II.

[0055] Figure 22 yes Figure 3 A schematic diagram of the folding mechanism of the foldable device in the foldable terminal shown;

[0056] Figure 23 yes Figure 22 A schematic diagram of the cross-sectional structure of the foldable mechanism after it is cut along point III-III.

[0057] Figure 24 yes Figure 4 The diagram shows a cross-sectional view of the foldable mechanism after it is cut along line IV-IV. Detailed Implementation

[0058] The technical solutions in this application will now be clearly and completely described with reference to the accompanying drawings.

[0059] Please see Figures 1 to 3 , Figure 1 This is a schematic diagram of the foldable terminal 1000 provided in this application in its inward folded state. Figure 2 yes Figure 1 The diagram shown is a structural schematic of the foldable terminal 1000 in its flattened state. Figure 3 yes Figure 2 The diagram shows the structure of the foldable terminal 1000 in its outward-folded state.

[0060] The foldable terminal 1000 can be an electronic product such as a mobile phone, tablet computer, personal computer, multimedia player, e-book reader, laptop computer, in-vehicle equipment, or wearable device. In this embodiment, the foldable terminal 1000 is a foldable mobile phone. That is, the foldable terminal 1000 is a mobile phone that can switch between a folded state and a flattened state.

[0061] Next, for ease of description, we define Figure 2 The foldable terminal 1000 shown has its width direction along the X-axis, its length direction along the Y-axis, and its thickness direction along the Z-axis. The X, Y, and Z axes are mutually perpendicular. For example, the rotation axis of the foldable terminal 1000 extends parallel to the Y-axis. That is, the foldable terminal 1000 can be relatively unfolded or folded around the Y-axis.

[0062] It should be noted that the terms "parallel" and "perpendicular" used in this application to describe relative positional relationships are relative to the current technological level, and not absolute or strict mathematical definitions. Slight deviations are permissible; approximations of parallelism and perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0063] in, Figure 1 The foldable terminal 1000 shown and Figure 3 All the foldable terminals 1000 shown are in a folded state. At this time, the foldable terminal 1000 has a smaller dimension along the X-axis, making it easy to carry. Figure 2 The foldable terminal 1000 shown is in a flattened state. For example, Figure 2 The unfolding angle of the foldable terminal 1000 shown can be 180 degrees. At this time, the foldable terminal 1000 has a larger dimension along the X-axis, and the foldable terminal 1000 has a larger display area.

[0064] It should be noted that slight deviations are permissible in the examples used in this application. For example, Figure 2 The 180-degree unfolding angle of the foldable terminal 1000 shown means that the unfolding angle of the foldable terminal 1000 can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated later can be understood in the same way. It should be understood that the foldable terminal 1000 shown in this application is a terminal capable of two folds. In some other embodiments, the foldable terminal 1000 may also be a terminal capable of three or more folds.

[0065] The foldable terminal 1000 includes a foldable device 100 and a display module 200, which is mounted on the foldable device 100. The display module 200 includes a display surface 201 facing away from the foldable device 100, which is used to display information such as text, images, or videos. In this embodiment, the display module 200 includes a first display portion 210, a second display portion 220, and a foldable portion 230. The foldable portion 230 is connected between the first display portion 210 and the second display portion 220. The foldable portion 230 is bendable about the Y-axis.

[0066] It should be understood that, Figure 2 and Figure 3 The boundary lines of the first display portion 210, the second display portion 220, and the foldable portion 230 are shown exemplarily, such as... Figure 2 and Figure 3 As shown by the dashed line, it does not constitute a limitation on the display module 200 in actual application scenarios.

[0067] like Figure 1 As shown, the foldable terminal 1000 is in an inward-folded state, with both the foldable device 100 and the display module 200 folded. The display module 200 is located inside the foldable device 100, with the first display portion 210 and the second display portion 220 positioned opposite each other, and the foldable portion 230 bent. At this time, the exposed area of ​​the display module 200 is relatively small, significantly reducing the probability of damage to the display module 200 and effectively protecting it.

[0068] like Figure 2 As shown, the foldable terminal 1000 is in a flattened state. Both the foldable device 100 and the display module 200 are flattened, with the first display portion 210 and the second display portion 220 flattened relative to each other. The foldable portion 230 is flattened without bending. At this time, the included angle between any two of the first display portion 210, the second display portion 220, and the foldable portion 230 can be 180 degrees. The display module 200 has a large display area, realizing a large-screen display for the foldable terminal 1000 and improving the user experience.

[0069] like Figure 3As shown, the foldable terminal 1000 is in an outward-folded state, with both the foldable device 100 and the display module 200 folded. The display module 200 is located on the outside of the foldable device 100, with the first display portion 210 and the second display portion 220 positioned opposite each other, and the foldable portion 230 bent. At this time, the exposed area of ​​the display module 200 is relatively large, providing a large display area. Users can select specific areas of the display module 200 for display according to their needs; for example, they can select one or more of the first display portion 210, the second display portion 220, and the foldable portion 230 for display, thereby improving the flexibility of the foldable terminal 1000 and enhancing the user experience.

[0070] It should be understood that the foldable terminal 1000 shown in this application is a foldable terminal that can be folded both inwards and outwards, that is, the foldable terminal 1000 shown in this application is a foldable terminal that can rotate 360 ​​degrees. In some other embodiments, the foldable terminal 1000 may also be a foldable terminal that can only be folded inwards, that is, the foldable terminal 1000 shown in this application is a foldable terminal that can rotate 180 degrees, that is, the foldable terminal 1000 shown in this application does not have an outward folding state.

[0071] The foldable device 100 includes a first housing 110, a second housing 120, and a folding mechanism 130. The folding mechanism 130 connects the first housing 110 and the second housing 120 to achieve a rotatable connection between them. The first housing 110 and the second housing 120 can rotate relative to each other via the folding mechanism 130. The folding mechanism 130 allows the foldable device 100 to switch between an inward-folded state, a flattened state, and an outward-folded state. Specifically, the first housing 110 carries a first display portion 210, and the second housing 120 carries a second display portion 220. In other words, the first display portion 210 is mounted on the first housing 110, and the second display portion 220 is mounted on the second housing 120. The folding mechanism 130 is disposed opposite to the foldable portion 230.

[0072] When the foldable device 100 is in the inward folding state, such as Figure 1 As shown, the first housing 110 and the second housing 120 are folded relative to each other, and the folding mechanism 130 is in an inward folded state. When the folding device 100 is in a flattened state, as... Figure 2 The first housing 110 and the second housing 120 are relatively flattened, and the included angle between the first housing 110 and the second housing 120 can be 180 degrees. The foldable mechanism 130 is in the flattened state. When the foldable device 100 is in the outward folded state, such as Figure 3 As shown, the first housing 110 and the second housing 120 are folded relative to each other, and the foldable mechanism 130 is in an outward folded state.

[0073] It should be noted that when the foldable terminal 1000 is in a flattened state, the foldable mechanism 130 is also flattened, as is the foldable portion 230 of the display module 200. To ensure effective support of the foldable portion 230 by the foldable mechanism 130, the foldable mechanism 130 needs to have a good flattening angle and flattening holding force to maintain its flattened state. However, existing foldable mechanisms have poor flattening angles and flattening holding forces when flattened, and cannot effectively support the foldable portion 230. The foldable portion 230 is prone to sagging and sinking, which can lead to problems such as flatness and light shadow differences, and low strength and reliability of the display module 200, resulting in poor reliability of the foldable terminal 1000.

[0074] When the foldable terminal 1000 shown in this application is in a flattened state, the flattening angle and flattening holding force of the folding mechanism 130 are good. The folding mechanism 130 can effectively support the foldable part 130, and the foldable part 130 will not sink or dent. This not only ensures the flatness, light and shadow and strength reliability of the display module 200, but also does not affect the normal use of the display module 200, thus improving the reliability of the foldable terminal 1000.

[0075] Next, the folding mechanism 130 of the foldable device 100 in the foldable terminal 1000 shown in this application will be described in detail.

[0076] Please see Figure 4 and Figure 5 , Figure 4 yes Figure 2 A schematic diagram of the folding mechanism 130 of the foldable device 100 in the foldable terminal 1000 shown. Figure 5 yes Figure 4 An exploded view of the foldable mechanism 130 shown.

[0077] The foldable mechanism 130 includes a base 10, a connecting assembly 20, a damping assembly 30, a synchronizing assembly 40, a pressure plate assembly 50, a transmission assembly 60, and a stop assembly 70. The connecting assembly 20, damping assembly 30, synchronizing assembly 40, and stop assembly 70 are all mounted on the base 10. The damping assembly 30, pressure plate assembly 50, and stop assembly 70 are all connected to the connecting assembly 20. The transmission assembly 60 is mounted on the connecting assembly 20 and connected to the pressure plate assembly 50. The connecting assembly 20, damping assembly 30, pressure plate assembly 50, and stop assembly 70 can all be folded inward, flattened, or folded outward relative to the base 10, thereby allowing for switching between these states.

[0078] Please see Figure 6 , Figure 6 yes Figure 5A schematic diagram of the base 10 in the foldable mechanism 130 shown.

[0079] In this embodiment, the base 10 extends along the Y-axis. The top surface 101 of the base 10 is arc-shaped. For example, the axis of the top surface 101 of the base 10 is parallel to the Y-axis. The base 10 is provided with a first mounting groove 10a, a second mounting groove 10b, a third mounting groove 10c, a fourth mounting groove 10d, a fifth mounting groove 10e, a sixth mounting groove 10f, a seventh mounting groove 10g, a first mounting groove 10h, a second mounting groove 10i, a third mounting groove 10j, and a first fixing hole 10k. The openings of the first mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, the fourth mounting groove 10d, the fifth mounting groove 10e, the sixth mounting groove 10f, the seventh mounting groove 10g, the first mounting groove 10h, the second mounting groove 10i, the third mounting groove 10j, and the first fixing hole 10k are all located on the top surface 101 of the base 10. The first assembly groove 10a, the second assembly groove 10b, the third assembly groove 10c, the fourth assembly groove 10d, the fifth assembly groove 10e, the sixth assembly groove 10f, the seventh assembly groove 10g, the first mounting groove 10h, the second mounting groove 10i, the third mounting groove 10j, and the first fixing hole 10k are all recessed from the top surface 101 of the base 10 towards the bottom surface 102 (in the negative Z-axis direction shown in the figure). Among them, the first assembly groove 10a, the second assembly groove 10b, the third assembly groove 10c, the fourth assembly groove 10d, the fifth assembly groove 10e, the sixth assembly groove 10f, the second mounting groove 10i, and the third mounting groove 10j all penetrate the bottom surface 102 of the base 10.

[0080] It should be noted that the directional terms such as "top," "bottom," "left," "right," "front," and "rear" used in the description of the foldable terminal 1000 in this application are mainly based on the attached diagram of the foldable terminal 1000. Figure 2 The orientation of the display is described with the positive Z-axis as "top", the negative Z-axis as "bottom", the positive X-axis as "right", the negative X-axis as "left", the positive Y-axis as "back", and the negative Y-axis as "front". This does not limit the orientation of the foldable terminal 1000 in actual application scenarios.

[0081] Specifically, the first assembly groove 10a is located on the left side of the base 10, and the second assembly groove 10b is located on the right side of the base 10. Along the width direction of the base 10 (the X-axis direction in the diagram), the first assembly groove 10a and the second assembly groove 10b are spaced apart and arranged opposite to each other. Both the first assembly groove 10a and the second assembly groove 10b are arc-shaped grooves, and the axis of both the first assembly groove 10a and the axis of the second assembly groove 10b are parallel to the Y-axis direction.

[0082] For example, there are two first assembly slots 10a and two second assembly slots 10b. Along the length direction of the base 10 (the Y-axis direction in the figure), the two first assembly slots 10a are arranged at intervals, and the two second assembly slots 10b are arranged at intervals. In some other embodiments, there may be one or more first assembly slots 10a, and / or one or more second assembly slots 10b. This application does not impose specific limitations on this.

[0083] It should be noted that the term "and / or" as used in this application refers to both "and" and "or". For example, "and / or" includes three cases: only one exists, only one exists, and both exist simultaneously. The following description of "and / or" can be understood in the same way.

[0084] The third assembly groove 10c is located on the left side of the base 10, and the fourth assembly groove 10d is located on the right side of the base 10. Along the length of the base 10, the third assembly groove 10c is located on one side of the first assembly groove 10a and is spaced apart from it. The fourth assembly groove 10d is located on the side of the third assembly groove 10c away from the second assembly groove 10b and is spaced apart from both the second and third assembly grooves 10b. Along the width direction of the base 10 (the X-axis direction in the diagram), the third assembly groove 10c and the fourth assembly groove 10d partially overlap. Both the third assembly groove 10c and the fourth assembly groove 10d are arc-shaped grooves, and the axis of both the third and fourth assembly grooves is parallel to the Y-axis direction.

[0085] It should be noted that the partial overlap of the third assembly groove 10c and the fourth assembly groove 10d along the width direction of the base 10 means that the projections of the third assembly groove 10c and the fourth assembly groove 10d on the YZ plane partially overlap. Similar descriptions in the following text can be understood in the same way.

[0086] For example, there are two third assembly slots 10c and two fourth assembly slots 10d. Along the length of the base 10, the two third assembly slots 10c are arranged at intervals, and the two fourth assembly slots 10d are arranged at intervals. In some other embodiments, there may be one or more third assembly slots 10c, and / or one or more fourth assembly slots 10d. This application does not impose specific limitations on this.

[0087] The fifth assembly slot 10e is located on the left side of the base 10, and the sixth assembly slot 10f is located on the right side of the base 10. The fifth assembly slot 10e is located on the side of the first assembly slot 10a away from the third assembly slot 10c, and is spaced apart from the first assembly slot 10a. The sixth assembly slot 10f is located on the side of the second assembly slot 10b away from the fourth assembly slot 10d, and is spaced apart from the second assembly slot 10b. Along the width direction of the base 10, the fifth assembly slot 10e and the sixth assembly slot 10f are spaced apart and arranged opposite to each other.

[0088] For example, there are two fifth assembly slots 10e and two sixth assembly slots 10f. Along the length of the base 10, the two fifth assembly slots 10e are arranged at intervals, and the two sixth assembly slots 10f are arranged at intervals. In some other embodiments, there may be one or more fifth assembly slots 10e, and / or one or more sixth assembly slots 10f. This application does not impose specific limitations on this.

[0089] The seventh assembly slot 10g is located between the first assembly slot 10a and the fifth assembly slot 10e, and between the second assembly slot 10b and the sixth assembly slot 10f, and is spaced apart from the first assembly slot 10a, the second assembly slot 10b, the fifth assembly slot 10e, and the sixth assembly slot 10f. Exemplarily, there are two seventh assembly slots 10g, arranged spaced apart along the length of the base 10. In other embodiments, there may be one or more seventh assembly slots 10g; this application does not impose specific limitations on this.

[0090] The first mounting slot 10h is located between the two fifth mounting slots 10e and the two sixth mounting slots 10f, and is spaced apart from both the two fifth mounting slots 10e and the two sixth mounting slots 10f. Exemplarily, there are two first mounting slots 10h, arranged spaced apart along the length of the base 10. In some other embodiments, there may be one or more first mounting slots 10h, and this application does not impose specific limitations on this.

[0091] The second mounting slot 10i is located to the left of the first mounting slot 10h and communicates with it. It is situated between the two fifth mounting slots 10e and is also spaced apart from both fifth mounting slots 10e. For example, there are two second mounting slots 10i, arranged spaced apart along the length of the base 10, with each second mounting slot 10i located to the left of a first mounting slot 10h. In other embodiments, there may be one or more second mounting slots 10i; this application does not impose specific limitations on this.

[0092] The third mounting slot 10j is located to the right of the first mounting slot 10h and communicates with it. It is situated between the two sixth mounting slots 10f and is spaced apart from both sixth mounting slots 10f. For example, there are two third mounting slots 10j, spaced apart along the length of the base 10, with each third mounting slot 10j located to the right of a first mounting slot 10h. In other embodiments, there may be one or more third mounting slots 10j; this application does not impose specific limitations on this.

[0093] Along the length of the base 10, the first fixing hole 10k is located on one side of the first mounting groove 10h and is spaced apart from the first mounting groove 10h. Along the width of the base 10, the first fixing hole 10k is located between the second mounting groove 10i and the third mounting groove 10h, and is spaced apart from both the second mounting groove 10i and the third mounting groove 10h. For example, there are four first fixing holes 10k, with every two first fixing holes 10k located on opposite sides of a first mounting groove 10h along the length of the base 10. In other embodiments, there may be three or more first fixing holes 10k, or more than five; this application does not impose specific limitations on this.

[0094] Please refer to the following: Figure 7 , Figure 7 yes Figure 5 A schematic diagram of the connecting component 20 in the foldable mechanism 130 shown.

[0095] The connecting assembly 20 is installed in the first assembly slot 10a, the second assembly slot 10b, the third assembly slot 10c, and the fourth assembly slot 10d. The connecting assembly 20 includes a first fixing frame 21, a second fixing frame 22, a third swing arm 23, a fourth swing arm 24, a fifth swing arm 25, and a sixth swing arm 26. The first fixing frame 21 is located on one side of the base 10 and is fixedly connected to the first housing 110. The second fixing frame 22 is located on one side of the base 10 and is fixedly connected to the second housing 120. The third swing arm 23 is rotatably connected to the base 10 and slidably connected to the first fixing frame 21. The fourth swing arm 24 is rotatably connected to the base 10 and slidably connected to the second fixing frame 22. The fifth swing arm 25 is rotatably connected to the base 10 and rotatably connected to the first fixing frame 21. The sixth swing arm 26 is rotatably connected to the base 10 and rotatably connected to the second fixing frame 22.

[0096] When the connecting component 20 switches between the inward folding state, the flattened state, and the outward folding state, the first fixing frame 21, the third swing arm 23, and the fifth swing arm 25 rotate relative to the base 10 in the first direction, and the second fixing frame 22, the fourth swing arm 24, and the sixth swing arm 26 rotate relative to the base 10 in the second direction, which is opposite to the first direction.

[0097] For example, when the connecting assembly 20 switches from an inward-folded state to an outward-folded state, the first fixing frame 21, the third swing arm 23, and the fifth swing arm 25 rotate counterclockwise relative to the base 10, and the second fixing frame 22, the fourth swing arm 24, and the sixth swing arm 26 rotate clockwise relative to the base 10. When the connecting assembly 20 switches from an unfolded state to a folded state, the first fixing frame 21, the third swing arm 23, and the fifth swing arm 25 rotate clockwise relative to the base 10, and the second fixing frame 22, the fourth swing arm 24, and the sixth swing arm 26 rotate counterclockwise relative to the base 10.

[0098] In this embodiment, there is one connecting component 20. In other embodiments, there may be multiple connecting components 20 (two or more), and the two or more connecting components 20 may be arranged at intervals along the Y-axis. The multiple connecting components 20 may be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the multiple connecting components 20, the connection relationship between components, and the connection relationship between components and components outside the component can all refer to the relevant design of the connecting components 20 described below, but the detailed structure or positional arrangement of the components may differ. It should be noted that the first fixing frame 21 of the multiple connecting components 20 may be an independent structural component or multiple parts of an integral structural component. And / or, the second fixing frame 22 of the multiple connecting components 20 may be an independent structural component or multiple parts of an integral structural component.

[0099] The first fixing frame 21 has a top surface 211, a bottom surface 212, a first clearance surface 213, a right side surface 214, a left side surface 215, a rear side surface 216, and a front side surface 217. Along the thickness direction of the first fixing frame 21 (the Z-axis direction in the figure), the top surface 211 and the bottom surface 212 are arranged opposite to each other, and the bottom surface 212 and the first clearance surface 213 are arranged opposite to each other. The first clearance surface 213 is located on the side of the top surface 211 closest to the base 10 and is connected to the top surface 211. Along the direction from the first fixing frame 21 to the base 10, the distance between the first clearance surface 213 and the bottom surface 212 gradually decreases. Exemplarily, the first clearance surface 213 is an inclined surface. In some other embodiments, the first clearance surface 213 may also be an arc-shaped surface; this application does not impose specific limitations on this.

[0100] Along the width direction (X-axis direction in the figure) of the first fixing frame 21, the right side 214 and the left side 215 are arranged opposite to each other. The right side 214 connects between the first clearance surface 213 and the bottom surface 212. The left side 215 connects between the top surface 211 and the bottom surface 212. Along the length direction (Y-axis direction in the figure) of the first fixing frame 21, the rear side 216 and the front side 217 are arranged opposite to each other and connect between the top surface 211 and the bottom surface 212, and also connect between the first clearance surface 213 and the bottom surface 212, as well as between the right side 214 and the left side 215.

[0101] The first fixing frame 21 is provided with a first sliding groove 21a, a second sliding groove 21b, a third sliding groove 21c, a fourth mounting groove 21d, a fifth mounting groove 21e, a first clearance groove 21f, and a first rotation groove 21g. The openings of the first sliding groove 21a, the second sliding groove 21b, and the third sliding groove 21c are all located on the right side 214 of the first fixing frame 21. The first sliding groove 21a, the second sliding groove 21b, and the third sliding groove 21c are all recessed from the right side 214 of the first fixing frame 21 towards the left side 215 (negative direction of the X-axis in the figure).

[0102] The first slide groove 21a penetrates the bottom surface 212 and the left side surface 215 of the first fixing frame 21. In some other embodiments, the first slide groove 21a may not penetrate the bottom surface 212 of the first fixing frame 21, and / or the first slide groove 21a may not penetrate the left side surface of the first fixing frame 21; this application does not impose specific limitations on this. For example, there are two first slide grooves 21a. The two first slide grooves 21a are arranged at intervals along the length direction of the first fixing frame 21. In some other embodiments, there may be one or more first slide grooves 21a; this application does not impose specific limitations on this.

[0103] Along the length of the first fixing frame 21, the second slide groove 21b is located on one side of the first slide groove 21a and is spaced apart from the first slide groove 21a. The second slide groove 21b penetrates the top surface 211, the first clearance surface 213, and the left side surface 215 of the first fixing frame 21. In some other embodiments, the first slide groove 21a may not penetrate at least one of the top surface 211, the first clearance surface 213, and the left side surface 215 of the first fixing frame 21, and this application does not impose specific limitations on this. For example, there are two second slide grooves 21b, and the two first slide grooves 21a are respectively located on opposite sides of the two first slide grooves 21a. In some other embodiments, there may be one or more first slide grooves 21a, and this application does not impose specific limitations on this.

[0104] The third slide 21c is located between the first slide 21a and the second slide 21b, and is spaced apart from both the first slide 21a and the second slide 21b. The third slide 21c penetrates the bottom surface 212, the first clearance surface 213, and the left side surface 215 of the first fixing frame 21. In some other embodiments, the third slide 21c may not penetrate at least one of the bottom surface 212, the first clearance surface 213, and the left side surface 215 of the first fixing frame 21, and this application does not impose specific limitations on this. For example, there are two third slides 21c, each third slide 21c being located between a first slide 21a and a second slide 21b. In some other embodiments, there may be one or more third slides 21c, and this application does not impose specific limitations on this.

[0105] The fourth mounting groove 21d is located between the first sliding groove 21a and the third sliding groove 21c, and is spaced apart from both the first sliding groove 21a and the third sliding groove 21c. The opening of the fourth mounting groove 21d is located between the top surface 211 and the first clearance surface 213 of the first fixing frame 21. The fourth mounting groove 21d is recessed from the top surface 211 and the first clearance surface 213 of the first fixing frame 21 towards the bottom surface 212 (in the negative Z-axis direction shown in the figure), and penetrates the right side surface 214 and the left side surface 215 of the first fixing frame 21. In some other embodiments, the fourth mounting groove 21d may not penetrate the right side surface 214 of the first fixing frame 21, and / or the fourth mounting groove 21d may not penetrate the left side surface 215 of the first fixing frame 21; this application does not impose specific limitations on this. For example, there are two fourth mounting grooves 21d, each fourth mounting groove 21d being located between a first sliding groove 21a and a third sliding groove 21c. In some other embodiments, there may be one or more fourth mounting slots 21d, and this application does not impose any specific restrictions on this.

[0106] The fifth mounting groove 21e is located on the side of the first sliding groove 21a opposite to the fourth mounting groove 21d, and is spaced apart from the first sliding groove 21a. The opening of the fifth mounting groove 21e is located on the top surface 211 and the first clearance surface 213 of the first fixing frame 21. The fifth mounting grooves 21e are all recessed from the top surface 211 and the first clearance surface 213 of the first fixing frame 21 towards the bottom surface 212 (negative direction of the Z-axis in the figure), and penetrate the right side surface 214 and the left side surface 215 of the first fixing frame 21. In some other embodiments, the fifth mounting groove 21e may not penetrate the right side surface 214 of the first fixing frame 21, and / or the fifth mounting groove 21e may not penetrate the left side surface 215 of the first fixing frame 21, and this application does not impose specific limitations on this. For example, there are two fifth mounting grooves 21e, each fifth mounting groove 21e is located on the side of a first sliding groove 21a opposite to a fourth mounting groove 21d. In some other embodiments, there may be one or more fifth mounting slots 21e, and this application does not impose any specific restrictions on this.

[0107] The opening of the first clearance groove 21f is located on the top surface 211 and the first clearance surface 213 of the first fixing frame 21. The first clearance groove 21f is recessed from the top surface 211 and the first clearance surface 213 of the first fixing frame 21 towards the bottom surface 212, and penetrates the right side surface 214 and the left side surface 215 of the first fixing frame 21. In some other embodiments, the first clearance groove 21f may not penetrate the right side surface 214 of the first fixing frame 21, and / or the first clearance groove 21f may not penetrate the left side surface 215 of the first fixing frame 21. This application does not impose specific limitations on this.

[0108] For example, there are three first clearance slots 21f, each located between two fourth mounting slots 21d and spaced apart from the two fourth mounting slots 21d, and arranged sequentially at intervals along the length of the first fixing frame 21. One first clearance slot 21f is located between two first sliding grooves 21a and spaced apart from both first sliding grooves 21a. In the other two first clearance slots 21f, each is located on the side of a third sliding groove 21c opposite to one of the first sliding grooves 21a and spaced apart from the third sliding groove 21c. In other embodiments, there may be two or fewer, or four or more, first clearance slots 21f; this application does not impose specific limitations on this.

[0109] The opening of the first rotating groove 21g is located on the top surface 211 and the first clearance surface 213 of the first fixing frame 21. The first rotating groove 21g is recessed from the top surface 211 and the first clearance surface 213 of the first fixing frame 21 towards the bottom surface 212. The first rotating groove 21g is an arc-shaped groove, and its axis is parallel to the Y-axis. For example, there are eight first rotating grooves 21g. One first rotating groove 21g is located on the rear side of the first fixing frame 21 and penetrates the rear side surface 216 of the first fixing frame 21. In two first rotating grooves 21g, each first rotating groove 21g is located between a second sliding groove 21b and a fourth mounting groove 21d, and penetrates the side wall of the second sliding groove 21b and communicates with the second sliding groove 21b. In the two first rotating slots 21g, each first rotating slot 21g is located between a fourth mounting slot 21d and a first clearance slot 21f, and penetrates the side wall of the first clearance slot 21f and communicates with it. The two first rotating slots 21g respectively penetrate both side walls of a first clearance slot 21f and communicate with it. One first rotating slot 21g is located on the front side of the first fixing frame 21 and penetrates the front side surface 217 of the first fixing frame 21. In some other embodiments, there may be seven or fewer, or nine or more, first rotating slots 21g; this application does not impose specific limitations on this.

[0110] The second fixing frame 22 includes a second clearance surface 223, which is located on the side of the top surface 221 of the second fixing frame 22 near the base 10 and is connected to the top surface 221 of the second fixing frame 22. The second fixing frame 22 is provided with a fourth sliding groove 22a, a fifth sliding groove 22b, a sixth sliding groove 22c, a sixth mounting groove 22d, a seventh mounting groove 22e, a second clearance groove 22f, and a second rotation groove 22g.

[0111] It should be noted that the second clearance surface 223, the fourth slide groove 22a, the fifth slide groove 22b, the sixth slide groove 22c, the sixth mounting groove 22d, the seventh mounting groove 22e, the second clearance groove 22f, and the second rotation groove 22g in the second fixed frame 22 can be referred to the relevant descriptions of the first slide groove 21a, the second slide groove 21b, the third slide groove 21c, the fourth mounting groove 21d, the fifth mounting groove 21e, the first clearance groove 21f, and the first rotation groove 21g in the first fixed frame 21, respectively, and will not be repeated here.

[0112] There are two third swing arms 23, each mounted in one of the two first mounting slots 10a of the base 10, and both can rotate relative to the base 10 within the first mounting slot 10a. Each third swing arm 23 is also mounted in one of the second sliding slots 21b and the fourth mounting slot 21d of the first fixed frame 21, and can slide relative to the first fixed frame 21 within the second sliding slot 21b and the fourth mounting slot 21d. In some other embodiments, there may be one or more third swing arms 23, and this application does not impose specific limitations on this.

[0113] In this embodiment, the two third swing arms 23 have the same structure, and both can adopt the relevant design of the third swing arm 23 described below. In other embodiments, the two third swing arms 23 may have different structures. For example, the two third swing arms 23 may have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the detailed structure or positional arrangement of the two third swing arms 23 may differ, and this application does not impose specific limitations in this regard.

[0114] Please refer to the following: Figure 8 and Figure 9 , Figure 8 yes Figure 7 The diagram shows the structure of the third swing arm 23 in the connecting assembly 20. Figure 9 yes Figure 8 The exploded structural diagram of the third swing arm 23 is shown.

[0115] The third swing arm 23 includes a third rotating part 23a, a third sliding part 23b, a first transmission part 23c, and a third connecting part 23d. The third rotating part 23a is rotatably connected to the base 10. The third sliding part 23b is fixedly connected to the third rotating part 23a and slidably connected to the first fixed frame 21. The first transmission part 23c is located on one side of the third sliding part 23b and is fixedly connected to the third sliding part 23b. The third connecting part 23d is fixedly connected between the third rotating part 23a and the third sliding part 23b. For example, the third sliding part 23b and the third rotating part 23a are spaced apart and fixedly connected by the third connecting part 23d. In some other embodiments, the third sliding part 23b and the third rotating part 23a may also be fixedly connected in other ways, and this application does not impose specific limitations on this.

[0116] The structure of the third rotating part 23a is adapted to the structure of the first assembly groove 10a. The third rotating part 23a is installed in the first assembly groove 10a and can rotate relative to the base 10 within the first assembly groove 10a to realize the rotational connection between the third swing arm 23 and the base 10. In this embodiment, the third rotating part 23a includes a first rotating cylinder 231 and a second rotating cylinder 232. The structure of the first rotating cylinder 231 is adapted to the structure of the first assembly groove 10a. The first rotating cylinder 231 is installed in the first assembly groove 10a and can rotate relative to the base 10 within the first assembly groove 10a. The first rotating cylinder 231 is provided with a first rotating groove 233. The first rotating groove 233 is an arc-shaped groove, and the axis of the first rotating groove 233 is parallel to the Y-axis direction and coincides with the axis of the first assembly groove 10a. The structure of the second rotating cylinder 232 is adapted to the structure of the first rotating groove 233. The second rotating cylinder 232 is installed in the first rotating groove 233 and can rotate relative to the first rotating cylinder 231 within the first rotating groove 233. The rotation center of the second rotating cylinder 232 relative to the first rotating cylinder 231 coincides with the rotation center of the first rotating cylinder 231 relative to the base 10.

[0117] The third swing arm 23 achieves rotation with the base 10 through the design of the first rotating cylinder 231 and the second rotating cylinder 232, which can ensure the overlap between the third swing arm 23 and the base 10 and ensure the assembly stability between the third swing arm 23 and the base 10. In some other embodiments, the third swing arm 23 can also achieve rotation with the base 10 in other ways, and this application does not impose specific limitations on this.

[0118] The structure of the third sliding part 23b is adapted to the structure of the second sliding groove 21b. The third sliding part 23b is installed in the second sliding groove 21b and can slide relative to the first fixed frame 21 within the second sliding groove 21b to achieve a sliding connection between the third swing arm 23 and the first fixed frame 21. Along the width direction of the third sliding part 23b (Y-axis direction in the figure), the first transmission part 23c is located on one side of the third sliding part 23b and in the fourth mounting groove 21d, and can slide relative to the first fixed frame 21 within the fourth mounting groove 21d under the drive of the third sliding part 23b. The first transmission part 23c is provided with a plurality of first teeth 234, all of which are provided on the surface of the first transmission part 23c away from the first fixed frame 21 (i.e., the surface facing the opening of the fourth mounting groove 21d). Along the sliding direction of the first transmission part 23c relative to the first fixed frame 21 (X-axis direction in the figure), the plurality of first teeth 234 are arranged sequentially. For example, the first transmission part 23c is in the shape of a "rack".

[0119] In one embodiment, the third swing arm 23 includes a first swing arm body 235, a first rotating cylinder 231, and a first transmission body 236. The first swing arm body 235 includes a second rotating cylinder 232, a first sub-sliding portion 237, and a third connecting portion 23d. The third connecting portion 23d is fixedly connected between the second rotating cylinder 232 and the first sub-sliding portion 237. The second rotating cylinder 232, the first sub-sliding portion 237, and the third connecting portion 23d can be integrally formed. In other embodiments, the third swing arm 23 can also be an integrally formed structure, or the third swing arm 23 can be assembled from other structural components; this application does not impose specific limitations in this regard.

[0120] Specifically, the first sub-sliding part 237 is provided with a first positioning hole 238, and the opening of the first positioning hole 238 is located on the surface of the first sub-sliding part 237 opposite to the third connecting part 23d. For example, there are two first positioning holes 238, which are spaced apart. In some other embodiments, there may be one or more first positioning holes 238, and this application does not impose specific limitations on this.

[0121] The first transmission body 236 is fixedly connected to the first swing arm body 235. The first transmission body 236 includes a second sub-sliding portion 239 and a first transmission portion 23c. The second sub-sliding portion 239 is fixedly connected to the first sub-sliding portion 237 to form a third sliding portion 23b. The first transmission portion 23c is located on one side of the second sub-sliding portion 239 and is fixedly connected to the second sub-sliding portion 239. The second sub-sliding portion 239 and the first transmission portion 23c can be integrally formed.

[0122] The first transmission body 236 is provided with a first positioning post 240, which is disposed on the surface of the second sub-sliding part 239 facing the first sub-sliding part 237. The structure of the first positioning post 240 is adapted to the structure of the first positioning hole 238. The first positioning post 240 can be inserted into the first positioning hole 238 to achieve positioning and assembly between the first transmission body 236 and the first swing arm body 235, ensuring the assembly accuracy between them. For example, there are two first positioning posts 240, spaced apart and inserted into two first positioning holes 238 respectively. In other embodiments, there may be one or more first positioning posts 240; this application does not impose specific limitations on this.

[0123] In some other embodiments, the first swing arm body 235 and the first transmission body 236 can also be positioned and assembled through other structures. For example, the first sub-sliding part 237 of the first swing arm body 235 is provided with a second positioning post, and the second sub-sliding part 239 of the first transmission body 236 is provided with a second positioning hole. This application does not impose specific limitations on this.

[0124] Please see Figure 7 There are two fourth swing arms 24, each mounted in one of the two second mounting slots 10b of the base 10, and both can rotate relative to the base 10 within the second mounting slot 10b. Each fourth swing arm 24 is also mounted in a fifth sliding groove 22b and a sixth mounting slot 22d of the second fixed frame 22, and can slide relative to the second fixed frame 22 within the fifth sliding groove 22b and the sixth mounting slot 22d. In some other embodiments, there may be one or more fourth swing arms 24, and this application does not impose a specific limitation on this.

[0125] In this embodiment, the two fourth swing arms 24 have the same structure, and both can adopt the relevant design of the fourth swing arm 24 described below. In other embodiments, the two fourth swing arms 24 may have different structures. For example, the two fourth swing arms 24 may have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the detailed structure or positional arrangement of the two fourth swing arms 24 may differ, and this application does not impose specific limitations in this regard.

[0126] The fourth swing arm 24 includes a fourth rotating part 24a, a fourth sliding part 24b, a second transmission part 24c, and a fourth connecting part 24d. The fourth sliding part 24b is spaced apart from the fourth rotating part 24a. The second transmission part 24c is located on one side of the fourth sliding part 24b and is fixedly connected to the fourth sliding part 24b. The fourth connecting part 24d is fixedly connected between the fourth rotating part 24a and the fourth sliding part 24b.

[0127] The structure of the fourth rotating part 24a is adapted to the structure of the second mounting groove 10b. The fourth rotating part 24a is installed in the second mounting groove 10b and can rotate relative to the base 10 within the second mounting groove 10b to achieve a rotational connection between the fourth swing arm 24 and the base 10. The structure of the fourth sliding part 24b is adapted to the structure of the fifth sliding groove 22b. The fourth sliding part 24b is installed in the fifth sliding groove 22b and can slide relative to the second fixed frame 22 within the fifth sliding groove 22b to achieve a sliding connection between the fourth swing arm 24 and the second fixed frame 22. Along the width direction of the fourth sliding part 24b (Y-axis direction in the figure), the second transmission part 24c is located on one side of the fourth sliding part 24b and in the sixth mounting groove 22d, and can slide relative to the second fixed frame 22 within the sixth mounting groove 22d under the drive of the fourth sliding part 24b.

[0128] It should be noted that the relevant structures of the fourth rotating part 24a, the fourth sliding part 24b, the second transmission part 24c, and the fourth connecting part 24d in the fourth swing arm 24 can be referred to the relevant descriptions of the third rotating part 23a, the third sliding part 23b, the first transmission part 23c, and the third connecting part 23d in the third swing arm 23, respectively, and will not be repeated here.

[0129] There are two fifth swing arms 25, each mounted in one of the two third mounting slots 10c of the base 10, and both swing arms 25 can rotate relative to the base 10 within the third mounting slots 10c. The two fifth swing arms 25 are also mounted in one of the two fifth mounting slots 21e of the first fixed frame 21, and both swing arms 25 can rotate relative to the first fixed frame 21 within the fifth mounting slots 21e. In some other embodiments, there may be one or more fifth swing arms 25; this application does not impose specific limitations on this.

[0130] In this embodiment, the two fifth swing arms 25 have the same structure, and both can adopt the relevant design of the fifth swing arm 25 described below. In other embodiments, the two fifth swing arms 25 may have different structures. For example, the two fifth swing arms 25 may have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the detailed structure or positional arrangement of the two fifth swing arms 25 may differ, and this application does not impose specific limitations in this regard.

[0131] Please refer to the following: Figure 10 and Figure 11 , Figure 10 yes Figure 7 The diagram shows the structure of the fifth swing arm 25 in the connecting assembly 20. Figure 11 yes Figure 10 The exploded structural diagram of the fifth swing arm 25 is shown.

[0132] The fifth swing arm 25 includes a fifth rotating part 25a, a sixth rotating part 25b, and a fifth connecting part 25c. The sixth rotating part 25b is spaced apart from the fifth rotating part 25a. The fifth connecting part 25c is fixedly connected between the fifth rotating part 25a and the sixth rotating part 25b.

[0133] The structure of the fifth rotating part 25a is adapted to the structure of the third assembly groove 10c. The fifth rotating part 25a is installed in the third assembly groove 10c and can rotate relative to the base 10 within the third assembly groove 10c to achieve a rotational connection between the fifth swing arm 25 and the base 10. In this embodiment, the fifth rotating part 25a includes a fifth rotating cylinder 251, a sixth rotating cylinder 252, and a seventh rotating cylinder 253. The structure of the fifth rotating cylinder 251 is adapted to the structure of the third assembly groove 10c. The fifth rotating cylinder 251 is installed in the third assembly groove 10c and can rotate relative to the base 10 within the third assembly groove 10c. The fifth rotating cylinder 251 is provided with a third rotating groove 254, which is an arc-shaped groove. The axis of the third rotating groove 254 is parallel to the Y-axis direction and coincides with the axis of the third assembly groove 10c. The structure of the sixth rotating cylinder 252 is adapted to the structure of the third rotating groove 254. The sixth rotating cylinder 252 is installed in the third rotating groove 254 and can rotate relative to the fifth rotating cylinder 251 within the third rotating groove 254. The sixth rotating cylinder 252 has a fourth rotating groove 255, which is an arc-shaped groove. The axis of the fourth rotating groove 255 is parallel to the Y-axis and coincides with the axis of the third rotating groove 254. The structure of the seventh rotating cylinder 253 is adapted to the structure of the fourth rotating groove 255. The seventh rotating cylinder 253 is installed in the fourth rotating groove 255 and can rotate relative to the sixth rotating cylinder 252 within the fourth rotating groove 255.

[0134] The fifth swing arm 25 achieves rotation with the base 10 through the design of the fifth rotating cylinder 251, the sixth rotating cylinder 252, and the seventh rotating cylinder 253, which ensures the overlap between the fifth swing arm 25 and the base 10 and guarantees the assembly stability between the fifth swing arm 25 and the base 10. In some other embodiments, the fifth swing arm 25 may also achieve rotation with the base 10 in other ways, and this application does not impose specific limitations on this.

[0135] The structure of the sixth rotating part 25b is adapted to the structure of the fifth mounting groove 21e. The sixth rotating part 25b is installed in the fifth mounting groove 21e and can rotate relative to the first fixed frame 21 within the fifth mounting groove 21e to achieve a rotational connection between the fifth swing arm 25 and the first fixed frame 21. The sixth rotating part 25b includes a first rotating shaft 256 and a first sleeve 257. The first rotating shaft 256 is installed in the fifth mounting groove 21e, and the first sleeve 257 is sleeved on the first rotating shaft 256 and can rotate relative to the first fixed frame 21 around the first rotating shaft 256. In some other embodiments, the sixth rotating part 25b can also achieve a rotational connection with the first fixed frame 21 in other ways; this application does not impose specific limitations on this.

[0136] The fifth connecting part 25c is fixedly connected between the seventh rotating cylinder 253 of the fifth rotating part 25a and the first sleeve 257 of the sixth rotating part 25b. The seventh rotating cylinder 253, the first sleeve 257, and the fifth connecting part 25c can be integrally formed. In some other embodiments, the seventh rotating cylinder 253, the first sleeve 257, and the fifth connecting part 25c may not be integrally formed, but rather assembled together; this application does not impose specific limitations on this.

[0137] Please see Figure 7 There are two sixth swing arms 26, each mounted in one of the two fourth mounting slots 10d of the base 10, and both swing arms 26 can rotate relative to the base 10 within the fourth mounting slots 10d. The two sixth swing arms 26 are also mounted in one of the two seventh mounting slots 22e of the second fixed frame 22, and both swing arms 26 can rotate relative to the second fixed frame 22 within the seventh mounting slots 22e. In some other embodiments, there may be one or more sixth swing arms 26; this application does not impose specific limitations on this.

[0138] In this embodiment, the two sixth swing arms 26 have the same structure, and both can adopt the relevant design of the sixth swing arm 26 described below. In other embodiments, the structures of the two sixth swing arms 26 may also be different. For example, the two sixth swing arms 26 may have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the detailed structure or positional arrangement of the two sixth swing arms 26 may differ, and this application does not impose specific limitations in this regard.

[0139] The sixth swing arm 26 includes a seventh rotating part 26a, an eighth rotating part 26b, and a sixth connecting part 26c. The eighth rotating part 26b is spaced apart from the seventh rotating part 26a. The sixth connecting part 26c is fixedly connected between the seventh rotating part 26a and the eighth rotating part 26b. The structure of the seventh rotating part 26a is adapted to the structure of the fourth mounting groove 10d. The seventh rotating part 26a is installed in the fourth mounting groove 10d and can rotate relative to the base 10 within the fourth mounting groove 10d to achieve a rotational connection between the sixth swing arm 26 and the base 10. The structure of the eighth rotating part 26b is adapted to the structure of the seventh mounting groove 22e. The eighth rotating part 26b is installed in the seventh mounting groove 22e and can rotate relative to the second fixed frame 22 within the seventh mounting groove 22e to achieve a rotational connection between the sixth swing arm 26 and the second fixed frame 22.

[0140] It should be noted that the relevant structures of the seventh rotating part 26a, the eighth rotating part 26b, and the sixth connecting part 26c in the sixth swing arm 26 can be referred to the relevant descriptions of the fifth rotating part 25a, the sixth rotating part 25b, and the fifth connecting part 25c in the fifth swing arm 25, respectively, and will not be repeated here.

[0141] Please refer to the following: Figure 6 and Figure 12 , Figure 12 yes Figure 5 The diagram shows the structure of the damping component 30 and the synchronization component 40 in the foldable mechanism 130.

[0142] The damping component 30 is installed in the fifth mounting slot 10e, the sixth mounting slot 10f, and the seventh mounting slot 10g, and is slidably connected to both the first fixing frame 21 and the second fixing frame 22. During the folding or unfolding of the connecting component 20 relative to the base 10, the damping component 30 provides damping force. When using the foldable terminal 1000, such as when the foldable terminal 1000 is in an inward-folded, flattened, or outward-folded state, and when switching between these states, the user can clearly feel the damping force provided by the damping component 30, resulting in a better feel and improved user experience.

[0143] In this embodiment, there are two damping components 30, each mounted in a fifth mounting slot 10e, a sixth mounting slot 10f, and a seventh mounting slot 10g. In other embodiments, there may be one or more damping components 30, and this application does not impose specific limitations on this. The two damping components 30 may be identical or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the two damping components 30, the connection relationship between components, and the connection relationship between components and components outside the component can all refer to the relevant design of the damping components 30 described below, but the detailed structure or positional arrangement of the components may differ.

[0144] The damping assembly 30 includes a first damping shaft 31, a second damping shaft 32, a first bracket 33, a second bracket 34, a first elastic element 35, a second elastic element 36, a seventh swing arm 37, and an eighth swing arm 38. The first damping shaft 31 is mounted in the fifth mounting slot 10e and the seventh mounting slot 10g. The second damping shaft 32 is mounted in the sixth mounting slot 10f and the seventh mounting slot 10g. The axes of the first damping shaft 31 and the second damping shaft 32 are both parallel to the Y-axis direction. For example, both the first damping shaft 31 and the second damping shaft 32 are flat shafts.

[0145] The first bracket 33 and the second bracket 34 are both installed in the fifth assembly slot 10e and the sixth assembly slot 10f. The second bracket 34 is located on the side of the first bracket 33 away from the seventh assembly slot 10g and is spaced apart from the first bracket 33. The first elastic member 35 is installed in the fifth assembly slot 10e, sleeved on the first damping shaft 31, and abuts between the first bracket 33 and the second bracket 34. The second elastic member 36 is installed in the sixth assembly slot 10f, sleeved on the second damping shaft 32, and abuts between the first bracket 33 and the second bracket 34. The first elastic member 35 and the second elastic member 36 can be elastic structural components such as springs.

[0146] The seventh swing arm 37 is installed in the fifth mounting slot 10e and sleeved on the first damping shaft 31, abutting against the first bracket 33 and the second bracket 34. The seventh swing arm 37 is also installed in the third sliding groove 21c of the first fixed frame 21, and can slide relative to the first fixed frame 21 within the third sliding groove 21c to achieve a sliding connection between the seventh swing arm 37 and the first fixed frame 21. The seventh swing arm 37 can abut against the first bracket 33 and the second bracket 34 via a cam mechanism.

[0147] The eighth swing arm 38 is mounted in the sixth mounting slot 10f and sleeved on the second damping shaft 32, abutting against the first bracket 33 and the second bracket 34. The eighth swing arm 38 is also mounted in the sixth sliding groove 22c of the second fixed frame 22, and can slide relative to the second fixed frame 22 within the sixth sliding groove 22c to achieve a sliding connection between the eighth swing arm 38 and the second fixed frame 22. The abutment between the eighth swing arm 38 and the first bracket 33 and the second bracket 34 can be achieved via a cam mechanism.

[0148] When the seventh swing arm 37 and / or the eighth swing arm 38 rotate relative to the base 10, they drive the first bracket 33 to move relative to the second bracket 34, thereby compressing the first elastic element 35 and the second elastic element 36. The first elastic element 35 and the second elastic element 36 are deformed by compression and exert a reaction force on the first bracket 33, thereby applying a damping force to the seventh swing arm 37 and / or the eighth swing arm 38 relative to the base 10. The user can feel the damping force provided by the damping assembly 30, and the user can experience a better feel, thereby improving the user experience. In some other embodiments, the damping assembly 30 can also provide damping force through other structural components, and this application does not make specific limitations in this regard.

[0149] Synchronization component 40 is installed in the seventh mounting slot 10g and sleeved on the first damping shaft 31 and the second damping shaft 32. Synchronization component 40 can drive the seventh swing arm 37 and the eighth swing arm 38 to rotate synchronously relative to the base 10, thereby driving the first fixed frame 21 and the second fixed frame 22 to rotate synchronously relative to the base 10, and further driving the third swing arm 23 and the fourth swing arm 24, as well as the fifth swing arm 25 and the sixth swing arm 26 to rotate synchronously relative to the base 10.

[0150] In this embodiment, there are two synchronization components 40. Each synchronization component 40 is installed in a seventh assembly slot 10g and sleeved on the first damping shaft 31 and the second damping shaft 32 of a damping component 30. In other embodiments, there may be one or more synchronization components 40, and this application does not impose specific limitations on this. The two synchronization components 40 may be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the two synchronization components 40, the connection relationship between components, and the connection relationship between components and components outside the assembly can all refer to the relevant design of the synchronization components 40 below, but the detailed structure or positional arrangement of the components may differ.

[0151] Synchronization component 40 includes a first gear 41, a second gear 42, and a synchronization shaft ( Figure 12 (Not shown) and a third gear 44. The first gear 41, second gear 42, synchronous shaft, and third gear 44 are all mounted in the seventh assembly slot 10g. The first gear 41 is sleeved on the first damping shaft 31. The second gear 42 is sleeved on the second damping shaft 32 and spaced apart from the first gear 41. There are two synchronous shafts located between the first damping shaft 31 and the second damping shaft 32, spaced apart from both shafts. The axes of both synchronous shafts are parallel to the Y-axis. For example, both synchronous shafts are round shafts. There are two third gears 44, each sleeved on one of the two synchronous shafts and meshing with the other. One third gear 44 meshes with the first gear 41, and the other third gear 44 meshes with the second gear 42.

[0152] When the seventh swing arm 37 rotates relative to the base 10, it drives the first gear 41 to rotate relative to the base 10. The first gear 41 drives the two third gears 44 to rotate relative to the base 10. The third gears 44 drive the second gear 42 to rotate relative to the base 10. The second gear 42 drives the eighth swing arm 38 to rotate relative to the base 10, so as to achieve synchronous rotation of the seventh swing arm 37 and the eighth swing arm 38 relative to the base 10.

[0153] When the eighth swing arm 38 rotates relative to the base 10, it drives the second gear 42 to rotate relative to the base 10. The second gear 42 drives the two third gears 44 to rotate relative to the base 10. The third gears 44 drive the first gear 41 to rotate relative to the base 10. The first gear 41 drives the seventh swing arm 37 to rotate relative to the base 10, thereby achieving synchronous rotation of the seventh swing arm 37 and the eighth swing arm 38 relative to the base 10. In some other embodiments, the synchronization component 40 may also drive the synchronous rotation of the seventh swing arm 37 and the eighth swing arm 38 relative to the base 10 through other structural components. This application does not impose specific limitations on this.

[0154] Please refer to the following: Figure 13 , Figure 13 yes Figure 5 A schematic diagram of the pressure plate assembly 50 in the foldable mechanism 130 shown.

[0155] The pressure plate assembly 50 is slidably and rotatably connected to the first fixing frame 21 and the second fixing frame 22. In this embodiment, the pressure plate assembly 50 includes a first pressure plate 51 and a second pressure plate 52. The first pressure plate 51 is rotatably connected to the first fixing frame 21. The second pressure plate 52 is rotatably connected to the second fixing frame 22.

[0156] The first pressure plate 51 includes a first plate body 51a, a ninth rotating part 51b, and a third transmission part 51c, both of which are fixedly connected to the first plate body 51a. The first plate body 51a, the ninth rotating part 51b, and the third transmission part 51c can be integrally formed. In other embodiments, the first plate body 51a, the ninth rotating part 51b, and the third transmission part 51c can also be assembled; this application does not impose specific limitations on this.

[0157] The length direction of the first plate 51a is parallel to the Y-axis direction. The first plate 51a has a top surface 511 and a bottom surface 512. Along the thickness direction of the first plate 51a (the Z-axis direction in the figure), the top surface 511 and the bottom surface 512 are arranged opposite to each other. The first plate 51a is provided with a third clearance notch 513 and a first clearance hole 514. Both the third clearance notch 513 and the first clearance hole 514 penetrate the first plate 51a along the thickness direction (the Z-axis direction in the figure).

[0158] Specifically, the third clearance notch 513 is located on the right side of the first plate 51a and penetrates the right side surface of the first plate 51a (not shown in the figure). The third clearance notch 513 is used to avoid the fifth connecting portion 25c of the fifth swing arm 25. The first clearance hole 514 is located on the left side of the first plate 51a and is spaced apart from the third clearance notch 513. Exemplarily, there are two third clearance notches 513 and two first clearance holes 514. Along the length of the first plate 51a, the two third clearance notches 513 are spaced apart, and the two first clearance holes 514 are located between the two third clearance notches 513 and are spaced apart from both of the three third clearance notches 513. In some other embodiments, there may be one or more third clearance notches 513, and / or one or more first clearance holes 514; this application does not impose specific limitations on this.

[0159] The ninth rotating part 51b is fixedly connected to the bottom surface 512 of the first plate 51a and is located on the left side of the first plate 51a, spaced apart from the first clearance hole 514. The structure of the ninth rotating part 51b is adapted to the structure of the first rotating groove 21g of the first fixing frame 21. The ninth rotating part 51b is installed in the first rotating groove 21g of the first fixing frame 21 and can rotate relative to the first fixing frame 21 within the first rotating groove 21g to achieve a rotatable connection between the first pressure plate 51 and the first fixing frame 21. For example, there are eight ninth rotating parts 51b, arranged sequentially at intervals along the length of the first plate 51a, and respectively installed in eight first rotating grooves 21g to ensure stable assembly between the first pressure plate 51 and the first fixing frame 21. In other embodiments, there may be seven or fewer, or more than nine, ninth rotating parts 51b; this application does not impose specific limitations on this.

[0160] The third transmission part 51c is fixedly connected to the bottom surface of the first plate 51a and located on the left side of the first plate 51a, spaced apart from the ninth rotating part 51b. The third transmission part 51c can also extend into the first clearance hole 514 to reduce the thickness space occupied by the first pressure plate 51, thereby reducing the space occupied by the foldable mechanism 130 and contributing to the miniaturization design of the foldable terminal 1000. Specifically, the third transmission part 51c is arc-shaped, and its axis is parallel to the Y-axis. The third transmission part 51c has multiple third teeth (not shown), all located on the surface of the third transmission part 51c facing away from the first plate 51a. Multiple second teeth are arranged sequentially around the rotation center of the third transmission part 51c relative to the first fixing frame 21. For example, the third transmission part 51c is gear-shaped.

[0161] For example, there are two third transmission parts 51c. Along the length of the first plate 51a, the two third transmission parts 51c are arranged alternately and extend into the two first clearance holes 514 respectively. In some other embodiments, there may be one or more third transmission parts 51c, and this application does not make specific limitations in this regard.

[0162] The second pressure plate 52 includes a second plate body 52a, a tenth rotating part 52b, and a fourth transmission part 52c. Both the tenth rotating part 52b and the fourth transmission part 52c are fixedly connected to the second plate body 52a. The second plate body 52a, the tenth rotating part 52b, and the fourth transmission part 52c can be integrally formed. It should be noted that the structures of the second plate body 52a, the tenth rotating part 52b, and the fourth transmission part 52c in the second pressure plate 52 can be referred to the relevant descriptions of the first plate body 51a, the ninth rotating part 51b, and the third transmission part 51c above, and will not be repeated here.

[0163] The second pressure plate 52 differs from the first pressure plate 51 in that the second plate body 52a has a fourth clearance notch 523 and a second clearance hole 524. The fourth clearance notch 523 is located on the left side of the second plate body 52a and penetrates through the left side of the second plate body 52a (not shown in the figure). The fourth clearance notch 523 is used to avoid the sixth connecting part 26c of the sixth swing arm 26. The second clearance hole 524 is located on the right side of the second plate body 52a. The tenth rotating part 52b is located on the right side of the second plate body 52a. The tenth rotating part 52b is installed in the second rotating groove 22g of the second fixed frame 22 and can slide and rotate relative to the second fixed frame 22 within the second rotating groove 22g to achieve a sliding and rotating connection between the second pressure plate 52 and the second fixed frame 22. The fourth transmission part 52c is located on the right side of the second plate body 52a and extends into the second clearance hole 524. The fourth transmission part 52c has multiple fourth teeth (not shown in the figure).

[0164] Please refer to the following: Figure 5 The transmission assembly 60 is installed on the first fixed frame 21 and the second fixed frame 22, and abuts between the third swing arm 23 and the first pressure plate 51, and between the fourth swing arm 24 and the second pressure plate 52. The transmission assembly 60 includes a first transmission member 61 and a second transmission member 62. The first transmission member 61 is installed on the first fixed frame 21. Specifically, the first transmission member 61 is installed in the fourth mounting groove 21d, and abuts between the first transmission part 23c of the third swing arm 23 and the third transmission part 51c of the first pressure plate 51. The first transmission member 61 meshes with the first gear 234 of the first transmission part 23c and the third gear of the third transmission part 51c. When the third swing arm 23 slides relative to the first fixed frame 21, the first transmission member 61 can drive the first pressure plate 51 to rotate relative to the first fixed frame 21. For example, there are two first transmission members 61, each of which is mounted in a fourth mounting slot 21d and abuts between a first transmission part 23c of a third swing arm 23 and a third transmission part 51c of a first pressure plate 51. In some other embodiments, there may be one or more first transmission members 61, and this application does not impose specific limitations on this.

[0165] The second transmission member 62 is mounted on the second fixed frame 22. Specifically, the second transmission member 62 is mounted in the sixth mounting groove 22d and abuts between the second transmission part 24c of the fourth swing arm 24 and the fourth transmission part 52c of the second pressure plate 52. The second transmission member 62 meshes with the second teeth of the second transmission part 24c and the fourth teeth of the fourth transmission part 52c. When the fourth swing arm 24 slides relative to the first fixed frame 21, the second transmission member 62 can drive the second pressure plate 52 to rotate relative to the second fixed frame 22. Exemplarily, there are two second transmission members 62, each mounted in a sixth mounting groove 22d and connected between a second transmission part 24c of the fourth swing arm 24 and a fourth transmission part 52c of the second pressure plate 52. In other embodiments, there may be one or more second transmission members 62; this application does not impose specific limitations on this.

[0166] Please refer to the following: Figure 14 , Figure 14 yes Figure 5 The diagram shows the structure of the stop assembly 70 in the foldable mechanism 130.

[0167] The stop assembly 70 is installed in the first mounting slot 10h, the second mounting slot 10i, and the third mounting slot 10j, and is slidably connected to both the first fixing frame 21 and the second fixing frame 22. When the foldable mechanism 130 is in the flattened state, the stop assembly 70 increases the flattening holding force of the foldable mechanism 130, ensuring that the foldable mechanism 130 remains in the flattened state. The foldable mechanism 130 effectively supports the foldable portion 230 of the display module 200, preventing the display module 200 from denting or sinking, and ensuring the reliability of the foldable terminal 1000.

[0168] In this embodiment, there are two stop components 70, each of which is installed in a first mounting slot 10h, a second mounting slot 10i, and a third mounting slot 10j. In other embodiments, there may be one or more stop components 70, and this application does not impose specific limitations on this. The two stop components 70 may be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the two stop components 70, the connection relationship between components, and the connection relationship between components and components outside the component can all refer to the relevant design of the stop components 70 below, but the detailed structure or positional arrangement of the components may differ.

[0169] The stop assembly 70 includes an elastic stop 71, a first stop shaft 72, a second stop shaft 73, a first swing arm 74, and a second swing arm 75. The elastic stop 71 is installed in the first mounting groove 10h and is capable of elastic deformation. The first stop shaft 72 is installed in the second mounting groove 10i. The second stop shaft 73 is installed in the third mounting groove 10j. The first stop shaft 72 and the second stop shaft 73 are located on opposite sides of the elastic stop 71 and are spaced apart from it. The axes of the first stop shaft 72 and the second stop shaft 73 are both parallel to the Y-axis direction. For example, both the first stop shaft 72 and the second stop shaft 73 are flat shafts. The first swing arm 74 is installed in the second mounting groove 10i, sleeved on the first stop shaft 72, and slidably connected to the first fixing frame 21. The first swing arm 74 is rotatably connected to the base 10 via the first stop shaft 72. The second swing arm 75 is installed in the third mounting groove 10j and sleeved on the second stop shaft 73, and is slidably connected to the second fixing frame 22. The second swing arm 75 is rotatably connected to the base 10 through the second stop shaft 73.

[0170] In some other embodiments, the stop assembly 70 may not include the first stop shaft 72, the first swing arm 74 may be rotatably connected to the base 10 in other ways, and / or the stop assembly 70 may not include the second stop shaft 73, the second swing arm 75 may be rotatably connected to the base 10 in other ways. This application does not impose any specific limitations.

[0171] Please refer to the following: Figure 15 and Figure 16 , Figure 15 yes Figure 14 A schematic diagram of the structure of the elastic stop member 71 in the stop assembly 70 is shown. Figure 16 yes Figure 15 The diagram shows a cross-sectional view of the elastic stop 71 after it has been cut along point II. Here, "cut along point II" refers to cutting along the plane containing line II; other similar descriptions in this text can be understood in the same way.

[0172] The structure of the elastic stop 71 is adapted to the structure of the first mounting groove 10h. The elastic stop 71 is installed in the first mounting groove 10h and can elastically deform along the width direction (X-axis direction in the figure). The elastic stop 71 is provided with a first retaining part 711 and a second retaining part 712. Along the width direction of the elastic stop 71, the first retaining part 711 and the second retaining part 712 are respectively provided on opposite sides of the elastic stop 71.

[0173] A first retaining portion 711 is provided on the surface of the elastic stop 71 facing the first swing arm 74. In this embodiment, the first retaining portion 711 is a protruding pin. The first retaining portion 711 protrudes from the surface of the elastic stop 71 facing the second mounting groove 10i in the direction facing the second mounting groove 10i (negative X-axis direction in the figure). The first retaining portion 711 includes a first top surface 713, two first side surfaces 714, and two first mating surfaces 715. The first top surface 713 is the surface of the first retaining portion 711 facing the first swing arm 74 (i.e., the surface away from the elastic stop 71). Along the thickness direction of the first retaining portion 711 (Z-axis direction in the figure), the two first side surfaces 714 are arranged opposite to each other and are located on opposite sides of the first top surface 713. Each first mating surface 715 connects the first top surface 713 and a first side surface 714. The distance between the two first mating surfaces 715 gradually increases along the direction from the first top surface 713 towards the elastic stop 71. For example, both first mating surfaces 715 are inclined surfaces, and the included angle θ1 between each first mating surface 715 and the first top surface 713 is an obtuse angle.

[0174] The second holding portion 712 is provided on the surface of the elastic stop 71 facing the second swing arm 75. In this embodiment, the second holding portion 712 is a protruding pin. The second holding portion 712 protrudes from the elastic stop 71 toward the third mounting groove 10j in the direction toward the third mounting groove 10j (positive X-axis direction in the figure). The second holding portion 712 includes a second top surface 716, two second side surfaces 717, and two second mating surfaces 718. The second top surface 716 is the surface of the second holding portion 712 facing the second swing arm 75 (i.e., the surface away from the elastic stop 71). Along the thickness direction of the second holding portion 712 (Z-axis direction in the figure), the two second side surfaces 717 are arranged opposite to each other and are located on opposite sides of the second top surface 716. Each second mating surface 718 connects the second top surface 716 and a second side surface 717. The distance between the two second mating surfaces 718 gradually increases along the direction from the second top surface 716 toward the elastic stop 71. For example, both second mating surfaces 718 are inclined surfaces, and the included angle θ2 between each second mating surface 718 and the second top surface 716 is an obtuse angle.

[0175] In one embodiment, the elastic stop member 71 includes a first leaf spring 71a and a second leaf spring 71b. Both the first leaf spring 71a and the second leaf spring 71b are mounted in a first mounting groove 10h. Along the width direction of the elastic stop member 71, the first leaf spring 71a and the second leaf spring 71b abut against each other and are arranged opposite to each other.

[0176] The first leaf spring 71a includes a first leaf spring portion 71c and a second leaf spring portion 71d. The first leaf spring portion 71c includes two first fixing portions 71e and a first elastic portion 71f. Along the length direction of the first leaf spring 71a (the direction of the illustrated Y axis), the two first fixing portions 71e are spaced apart and oppositely arranged. The first elastic portion 71f is located on the same side of the two first fixing portions 71e and is fixedly connected between the two first fixing portions 71e. Among them, the first elastic portion 71f is in an arc-shaped sheet form and protrudes in a direction away from the second leaf spring 71b. Exemplarily, the two first fixing portions 71e and the first elastic portion 71g are integrally formed. For example, the first leaf spring portion 71c can be a leaf spring made of a metal material. In some other embodiments, the two first fixing portions 71e and the first elastic portion 71g can also be assembled together, and / or the first leaf spring portion 71c can also be made of other materials.

[0177] In this embodiment, the first leaf spring portion 71c is in a "U" shape. The two first fixing portions 71e and the first elastic portion 71f form two "L"-shaped barb structures. Both of the two first fixing portions 71e are in abutment with the groove side walls of the first mounting groove 10h to limit the movement of the first leaf spring 71a in the X-axis direction and the Y-axis direction in the first mounting groove 10h, ensuring the stable assembly of the first leaf spring 71a on the base 10.

[0178] The second leaf spring portion 71d is mounted on the surface of the first elastic portion 71f that faces away from the second leaf spring 71b and is spaced apart from both of the two first fixing portions 7!e. Specifically, the second leaf spring portion 71d is in contact with the surface of the first elastic portion 71f that faces away from the second leaf spring 71b. Among them, the second leaf spring portion 71d is in an arc-shaped sheet form and protrudes in a direction away from the second leaf spring 71b. In addition, a first clamping portion 711 is provided on the surface of the second leaf spring portion 71d that faces away from the first elastic portion 71f. Exemplarily, the second leaf spring portion 71d can be mounted on the first elastic portion 71f by welding methods such as laser welding or local welding, or the second leaf spring portion 71d can be mounted on the first elastic portion 71f by bonding or the like, or the second leaf spring portion 71d can also be integrally formed with the first leaf spring portion 71c to reduce the manufacturing difficulty of the elastic stopper 71.

[0179] It should be noted that since the stiffness of a single leaf spring is limited, the first leaf spring 71a shown in this application adopts a combined structure of the first leaf spring portion 71c and the second leaf spring portion 71d, which can increase the overall stiffness of the first leaf spring 71a, and further increase the stopping stiffness of the elastic stopper 71.

[0180] The second leaf spring 71b includes a third leaf spring portion 71g and a fourth leaf spring portion 71h. Along the width direction of the elastic stop member 71, the third leaf spring portion 71g abuts against the first leaf spring portion 71c and is disposed opposite to each other. The third leaf spring portion 71g includes two second fixing portions 71i and a second elastic portion 71j. It should be noted that the relevant structures of the third leaf spring portion 71g and the fourth leaf spring portion 71h in the second leaf spring 71b can be referred to the relevant descriptions of the first leaf spring portion 71c and the second leaf spring portion 71d in the first leaf spring 71a, and will not be described further here.

[0181] Please see Figure 14 The first swing arm 74 is mounted in the second mounting groove 10i and can rotate relative to the base within the second mounting groove 10i. The first swing arm 74 is also mounted in the first sliding groove 21a of the first fixed frame 21 and can slide relative to the first fixed frame 21 within the first sliding groove 21a. In addition, the first swing arm 74 can also rotate relative to the first fixed frame 21 within the first sliding groove 21a to realize the rotational connection between the first swing arm 74 and the first fixed frame 21, thereby improving the flexibility of the relative movement between the first swing arm 74 and the first fixed frame 21 and ensuring the smooth rotation of the foldable mechanism 130.

[0182] Please refer to the following: Figure 17 and Figure 18 , Figure 17 yes Figure 14 The diagram shows the structure of the first swing arm 74 in the stop assembly 70. Figure 18 yes Figure 17 The diagram shows a cross-sectional view of the first swing arm 74.

[0183] The first swing arm 74 includes a first rotating portion 74a, a first sliding portion 74b, and a first connecting portion 74c. The first sliding portion 74b is fixedly connected to the first rotating portion 74a. The first connecting portion 74c is fixedly connected between the first rotating portion 74a and the first sliding portion 74b. For example, the first sliding portion 74b and the first rotating portion 74a are spaced apart and fixedly connected via the first connecting portion 74c. In other embodiments, the first sliding portion 74b and the first rotating portion 74a may also be fixedly connected in other ways, and this application does not impose specific limitations on this.

[0184] The first rotating part 74a is rotatably connected to the base 10 and is located on the side of the elastic stop member 71 near the first holding part 711. Specifically, the first rotating part 74a is installed in the second mounting groove 10i and sleeved on the first stop shaft 72 to rotatably connect to the base 10 via the first stop shaft 72. The first rotating part 74a includes a first peripheral side 741 and two first end faces 742. The first peripheral side 741 is the first peripheral side 741 of the first rotating part 74a facing away from the first stop shaft 72, and the first peripheral side 741 is arranged around the first stop shaft 72. Along the length direction of the first rotating part 74a (the Y-axis direction in the figure), the two first end faces 742 are arranged opposite to each other and connected to the opposite sides of the first peripheral side 741.

[0185] The first rotating part 74a is provided with a third retaining part 743 and a fifth retaining part 744, both of which are located on the first peripheral side 741. The structures of the third retaining part 743 and the fifth retaining part 744 are adapted to the structure of the first retaining part 711. In this embodiment, both the third retaining part 743 and the fifth retaining part 744 are grooves.

[0186] The third retaining portion 743 is located between the two first end faces 742 and is spaced apart from both first end faces 742 to ensure the strength of the first rotating portion 74a. Both the third retaining portion 743 and the fifth retaining portion 744 are recessed from the first circumferential side face 741 toward the first stop shaft 72. The third retaining portion 743 includes a first groove bottom wall surface 745 and two first groove side wall surfaces 746. Around the circumference of the first rotating portion 74a, the two first groove side wall surfaces 746 are located on opposite sides of the first groove bottom wall surface 745 and are both connected to the first groove bottom wall surface 745. The distance between the two first groove side wall surfaces 746 gradually increases along the direction from the first groove bottom wall surface 745 toward the first circumferential side face 741. Both first groove side wall surfaces 746 are inclined surfaces, and the included angle θ3 between each first groove side wall surface 746 and the first groove bottom wall surface 745 is an obtuse angle. For example, θ3 can be equal to θ1.

[0187] The fifth holding portion 744 also penetrates both first end faces 742. There are multiple fifth holding portions 744, arranged sequentially at intervals around the first stop shaft 72. At this time, the third holding portion 743 is located between two adjacent fifth holding portions 744 and communicates with both fifth holding portions 744. Exemplarily, the first rotating portion 74a can be gear-shaped. In some other embodiments, the first holding portion 711 can also be a groove, and the third holding portion 743 and the fifth holding portion 744 can also be protruding pins; this application does not impose specific limitations in this regard.

[0188] The structure of the first sliding part 74b is adapted to the structure of the first sliding groove 21a. The first sliding part 74b is installed in the first sliding groove 21a and can slide relative to the first fixed frame 21 within the first sliding groove 21a to achieve a sliding connection between the first swing arm 74 and the first fixed frame 21. In addition, the first sliding part 74b can also rotate relative to the first fixed frame 21 within the first sliding groove 21a to achieve a rotational connection between the first swing arm 74 and the first fixed frame 21, thereby improving the flexibility of relative movement between the first swing arm 74 and the first fixed frame 21 and ensuring the smooth rotation of the foldable mechanism 130.

[0189] Please see Figure 14 The second swing arm 75 is mounted in the third mounting slot 10j and can rotate relative to the base within the third mounting slot 10j. The second swing arm 75 is also mounted in the fourth sliding groove 22a of the second fixed frame 22 and can slide relative to the second fixed frame 22 within the fourth sliding groove 22a. Furthermore, the second swing arm 75 can also rotate relative to the second fixed frame 22 within the fourth sliding groove 22a to achieve a rotational connection between the second swing arm 75 and the second fixed frame 22, thereby improving the flexibility of relative movement between the second swing arm 75 and the second fixed frame 22 and ensuring the smooth rotation of the foldable mechanism 130.

[0190] The second swing arm 75 includes a second rotating portion 75a, a second sliding portion 75b, and a second connecting portion 75c. The second sliding portion 75b is fixedly connected to the second rotating portion 75a. The second connecting portion 75c is fixedly connected between the second rotating portion 75a and the second sliding portion 75b. For example, the second sliding portion 75b and the second rotating portion 75a are spaced apart and fixedly connected by the second connecting portion 75c. In other embodiments, the second sliding portion 75b and the second rotating portion 75a may also be fixedly connected in other ways, and this application does not impose specific limitations on this.

[0191] The second rotating part 75a is rotatably connected to the base 10 and is located on the side of the elastic stop 71 near the second holding part 712. Specifically, the second rotating part 75a is installed in the third mounting groove 10j and sleeved on the second stop shaft 73 to rotatably connect to the base 10 via the second stop shaft 73. The second rotating part 75a has a fourth holding part 753 and a sixth holding part 754. The structure of the second sliding part 75b is adapted to the structure of the fourth sliding groove 22a. The second sliding part 75b is installed in the fourth sliding groove 22a and can slide relative to the second fixed frame 22 within the fourth sliding groove 22a to achieve a sliding connection between the second swing arm 75 and the second fixed frame 22. Furthermore, the second sliding part 75b can also rotate relative to the second fixed frame 22 within the fourth sliding groove 22a to achieve a rotational connection between the second swing arm 75 and the second fixed frame 22, thereby improving the flexibility of relative movement between the second swing arm 75 and the second fixed frame 22 and ensuring the smooth rotation of the foldable mechanism 130.

[0192] It should be noted that the relevant structures of the second rotating part 75a, the second sliding part 75b, and the second connecting part 75c in the second swing arm 75 can be referred to the relevant descriptions of the first rotating part 74a, the first sliding part 74b, and the first connecting part 74c in the first swing arm 74, and will not be repeated here.

[0193] Please see Figure 5 The foldable mechanism 130 also includes a cover plate 80, which is mounted on the base 10 and covers at least part of the stop assembly 70. Specifically, the cover plate 80 covers the elastic stop member 71, the first stop shaft 72, and the second stop shaft 73 to protect the stop assembly 70 and prevent other components from affecting its normal operation. There are two cover plates 80. Along the length of the base 10, the two cover plates 80 are spaced apart and each covers one stop assembly 70. In some other embodiments, there may be one or more cover plates 80, and this application does not impose specific limitations on this. The two cover plates 80 may be the same or similar components, symmetrical or partially symmetrical structures, or different structures. For example, the basic structure of each component in the two cover plates 80, the connection relationship between components, and the connection relationship between components and components other than the assembly can all refer to the relevant design of the cover plate 80 below, but the detailed structure or positional arrangement of the components may differ.

[0194] Please refer to the following: Figure 19 , Figure 19 yes Figure 5 A schematic diagram of the cover plate 80 in the foldable mechanism 130 shown.

[0195] In this embodiment, the cover plate 80 extends along the Y-axis direction. The top surface 801 of the cover plate 80 is arc-shaped. For example, the axis of the top surface 801 of the cover plate 80 is parallel to the Y-axis direction. The top surface 801 of the cover plate 80 can be flush with the top surface 101 of the base 10, so as to jointly support the foldable portion 230 of the display module 200 together with the top surface 101 of the base 10.

[0196] The cover plate 80 is provided with a second fixing hole 803, a first clearance notch 804, and a second clearance notch 805. The second fixing hole 803, the first clearance notch 804, and the second clearance notch 805 all penetrate the top surface 801 and the bottom surface 802 of the cover plate 80 along its thickness direction (Z-axis direction in the figure). The second fixing hole 803 communicates with the first fixing hole 10k of the base 10. For example, there are two second fixing holes 803, spaced apart along the length of the cover plate 80, and each communicating with one of the two first fixing holes 10k. In some other embodiments, there may be one or more second fixing holes 803; this application does not impose specific limitations on this.

[0197] The first clearance notch 804 and the second clearance notch 805 are both located between the two second fixing holes 803, and are spaced apart from the two second fixing holes 803. Specifically, the first clearance notch 804 is located on the left side of the cover plate 80 and penetrates the left side of the cover plate 80 (not shown in the figure) to avoid the first rotating part 74a and the first connecting part 74c of the first swing arm 74, thus preventing interference between the cover plate 80 and the first swing arm 74 and ensuring the smooth rotation of the foldable mechanism 130. The second clearance notch 805 is located on the right side of the cover plate 80 and penetrates the right side of the cover plate 80 (not shown in the figure) to avoid the second rotating part 75a and the second connecting part 75c of the second swing arm 75, thus preventing interference between the cover plate 80 and the second swing arm 75 and ensuring the smooth rotation of the foldable mechanism 130.

[0198] Please see Figure 5 The foldable mechanism 130 also includes a fastener 90, which passes through the second fixing hole 803 of the cover plate 80 and the first fixing hole 10k of the base 10, and is fixedly connected between the cover plate 80 and the base 10 to install the cover plate 80 onto the base 10. The fastener 90 can be a screw or bolt or other component that provides a fixing function. Exemplarily, there are four fasteners 90, each passing through one second fixing hole 803 and one first fixing hole 10k. In some other embodiments, there may be three or fewer, or five or more fasteners 90; this application does not impose specific limitations on this.

[0199] Please see Figure 20 and Figure 21 , Figure 20 yes Figure 1 A schematic diagram of the folding mechanism 130 of the foldable device 100 in the foldable terminal 1000 shown. Figure 21 yes Figure 20 The cross-sectional view of the foldable mechanism 130 after it is cut along line II-II is shown.

[0200] When the foldable mechanism 130 is in the inward folded state, the first fixed frame 21, the second fixed frame 22, the first pressure plate 51 and the second pressure plate 52 are all located on the top side of the base 10 and are spaced apart and arranged opposite each other. The third swing arm 23 and the fourth swing arm 24 are folded relative to each other, and the fifth swing arm 25 and the sixth swing arm 26 are folded relative to each other. The top surface of the first pressure plate 51 (i.e. the top surface 511 of the first plate 51a) intersects with the top surface 211 of the first fixed frame 21. The bottom surface 512 of the first plate 51a in the first pressure plate 51 contacts the first clearance surface 213 of the first fixed frame 21. The top surface of the second pressure plate 52 (i.e. the top surface 521 of the second plate 52a) intersects with the top surface 221 of the second fixed frame 22. The bottom surface 522 of the second plate 52a in the second pressure plate 52 contacts the second clearance surface 223 of the second fixed frame 22. For example, the bottom surface 512 of the first plate body 51a in the first pressure plate 51 is in contact with the first clearance surface 213 of the first fixing frame 21, and the bottom surface 522 of the second plate body 52a in the second pressure plate 52 is in contact with the second clearance surface 223 of the second fixing frame 22.

[0201] At this time, the first fixing frame 21, the second fixing frame 22, the first pressure plate 51, the second pressure plate 52 and the base 10 enclose and form a clearance space 1301. The cross-section of the clearance space 1301 is "teardrop-shaped" to avoid the foldable part 230 of the display module 200, avoid interference between the foldable mechanism 130 and the foldable part 230, prevent the foldable mechanism 130 from damaging the foldable part 230, and ensure the reliability of the foldable terminal 1000.

[0202] Furthermore, the seventh swing arm 37 and the eighth swing arm 38 are folded relative to each other, and the first swing arm 74 and the second swing arm 75 are folded relative to each other. The third and fifth holding portions 743 and 744 of the first swing arm 74 are spaced apart from the first holding portion 711 of the elastic stop member 71, and the fourth and sixth holding portions 753 and 754 of the second swing arm 75 are spaced apart from the second holding portion 712 of the elastic stop member 71. In some other embodiments, when the foldable mechanism 130 is in the inward folded state, the fifth holding portion 744 of the first swing arm 74 can engage with the first holding portion 711 of the elastic stop member 71, and the sixth holding portion 754 of the second swing arm 75 can engage with the second holding portion 712 of the elastic stop member 71, so as to ensure the inward folding holding force of the foldable mechanism 130.

[0203] Please see Figure 22 and Figure 23 , Figure 22 yes Figure 3 A schematic diagram of the folding mechanism 130 of the foldable device 100 in the foldable terminal 1000 shown. Figure 23 yes Figure 22 The cross-sectional view of the foldable mechanism 130 after being cut along point III-III is shown.

[0204] When the foldable mechanism 130 is in the outward folded state, the first fixed frame 21 and the second fixed frame 22 are both located on the bottom side of the base 10 and are spaced apart and back to back. The third swing arm 23 and the fourth swing arm 24 are folded back to back, the fifth swing arm 25 and the sixth swing arm 26 are folded back to back. The top surface 511 of the first plate 51a in the first pressure plate 51 is flush with the top surface 211 of the first fixed frame 21, and the top surface 521 of the second plate 52a in the second pressure plate 52 is flush with the top surface 221 of the second fixed frame 22. Among them, the top surface 511 of the first plate 51a, the top surface 211 of the first fixing frame 21, the top surface 101 of the base 10, the top surface 521 of the second plate 52a, the top surface 221 of the second fixing frame 22, and the top surface 801 of the cover plate 80 are flush and together support the foldable part 230 of the display module 200, so as to ensure that the foldable mechanism 130 effectively supports the display module 200, avoid the display module 200 from sinking or denting, avoid the display module 200 from having low strength and reliability, and ensure the reliability of the foldable terminal 1000.

[0205] At this time, the bottom surface 512 of the first plate 51a in the first pressure plate 51 is spaced apart from the first clearance surface 213 of the first fixing frame 21, and the bottom surface 522 of the second plate 52a in the second pressure plate 52 is spaced apart from the second clearance surface 223 of the second fixing frame 22. The included angle between the bottom surface 512 and the first clearance surface 213 of the first plate 51a is the first included angle θ4, and the included angle between the bottom surface 522 and the second clearance surface 223 of the second plate 52a is θ5. Both θ4 and θ5 are greater than 0 degrees and less than 90 degrees. For example, both θ4 and θ5 are 15 degrees.

[0206] Furthermore, the seventh swing arm 37 and the eighth swing arm 38 fold back to back, and the first swing arm 74 and the second swing arm 75 fold back to back. The third holding portion 743 of the first swing arm 74 is spaced apart from the first holding portion 711 of the elastic stop member 71, and the fourth holding portion 753 of the second swing arm 75 is spaced apart from the second holding portion 712 of the elastic stop member 71. Specifically, the fifth holding portion 744 of the first swing arm 74 and the first holding portion 711 of the elastic stop member 71 mutually hold each other, and the sixth holding portion 754 of the second swing arm 75 and the second holding portion 712 of the elastic stop member 71 mutually hold each other, to ensure the inward folding holding force of the foldable mechanism 130. In some other embodiments, when the foldable mechanism 130 is in the outward folded state, the fifth holding portion 744 of the first swing arm 74 may be spaced apart from the first holding portion 711 of the elastic stop member 71, and / or the sixth holding portion 754 of the second swing arm 75 may be spaced apart from the second holding portion 712 of the elastic stop member 71. This application does not impose specific limitations on this.

[0207] Please see Figure 4 and Figure 24 , Figure 24yes Figure 4 The diagram shows a cross-sectional view of the foldable mechanism 130 after it is cut along line IV-IV.

[0208] When the foldable mechanism 130 is in the flattened state, the first fixed frame 21 and the second fixed frame 22 are located on opposite sides of the base 10, the third swing arm 23 and the fourth swing arm 24 are flattened relative to each other, the fifth swing arm 25 and the sixth swing arm 26 are flattened relative to each other, the top surface 511 of the first plate 51a in the first pressure plate 51 is flush with the top surface 211 of the first fixed frame 21, and the top surface 521 of the second plate 52a in the second pressure plate 52 is flush with the top surface 221 of the second fixed frame 22. The top surface of the first plate 51a, the top surface 211 of the first fixing frame 21, the top surface of the second plate 52a, and the top surface 221 of the second fixing frame 22 can jointly support the foldable part 230 of the display module 200, so as to ensure that the foldable mechanism 130 effectively supports the display module 200, avoid the display module 200 from sinking or denting, avoid the display module 200 from having problems such as flatness and light and shadow difference, low strength and reliability, and ensure the reliability of the foldable terminal 1000.

[0209] At this time, the bottom surface 512 of the first plate 51a in the first pressure plate 51 is spaced apart from and opposite to the first clearance surface 213 of the first fixing frame 21, and the bottom surface 522 of the second plate 52a in the second pressure plate 52 is spaced apart from and opposite to the second clearance surface 223 of the second fixing frame 22. The included angle between the bottom surface 512 of the first plate 51a and the first clearance surface 213 is the first included angle θ4, and the included angle between the bottom surface 522 of the second plate 52a and the second clearance surface 223 is θ5.

[0210] Furthermore, the seventh swing arm 37 and the eighth swing arm 38 are relatively flattened, as are the first swing arm 74 and the second swing arm 75. The third holding portion 743 of the first swing arm 74 is engaged with the first holding portion 711 of the elastic stop member 71, and the fourth holding portion 753 of the second swing arm 75 is engaged with the second holding portion 712 of the elastic stop member 71, thereby limiting the rotation of the first swing arm 74 and the second swing arm 75 relative to the base 10, thus realizing the flattening and stopping function of the stop assembly 70. The stop assembly 70 can improve the flattening holding force of the foldable mechanism 130, which can effectively support the foldable portion 230 of the display module 200, preventing the display module 200 from sinking or denting, and ensuring the reliability of the foldable terminal 1000. At this time, the fifth holding part 744 of the first swing arm 74 is spaced apart from the first holding part 711 of the elastic stop member 71, and the sixth holding part 754 of the second swing arm 75 is spaced apart from the second holding part 712 of the elastic stop member 71.

[0211] Among them, the two first groove sidewalls 746 of the third holding part 743 (such as Figure 18As shown) are respectively with the two first mating surfaces 715 of the first holding part 711 (as shown) Figure 16 (As shown) contact, the two second groove sidewalls of the fourth retaining part 753 respectively contact the two second mating surfaces 725 of the second retaining part 712 (as shown) Figure 16 (As shown) Contact. For example, the two first groove sidewalls 746 are respectively attached to the two first mating surfaces 715, and the two second groove sidewalls of the fourth holding part 753 are respectively attached to the two second mating surfaces 718, so as to ensure the holding force between the third holding part 743 and the first holding part 711, and the fourth holding part 753 and the second holding part 712, thereby ensuring the flattening holding force of the foldable mechanism 130.

[0212] Understandably, during the rotation of the first swing arm 74 and the second swing arm 75 relative to the base 10, the two first mating surfaces 715 and the two first groove sidewalls 746 can not only guide the first holding part 711 (protruding pin) into the third holding part 743 (groove), but also guide the first holding part 711 (protruding pin) out of the third holding part 743 (groove). Similarly, the two second mating surfaces 725 and the two second groove sidewalls of the fourth holding part 753 can not only guide the second holding part 712 (protruding pin) into the fourth holding part 753 (groove), but also guide the second holding part 712 (protruding pin) out of the fourth holding part 753 (groove), thereby reducing the feeling of jamming during the rotation of the first swing arm 74 and the second swing arm 75 relative to the base 10 and improving the smoothness of the rotation of the foldable mechanism.

[0213] It should be noted that the magnitude of the flattening stopping force of the stop assembly 70 can be adaptively adjusted according to requirements. For example, the tilt angle (θ1) of the first mating surface 715, the tilt angle (θ3) of the first groove side wall surface 746, the tilt angle (θ2) of the second mating surface 725, the tilt angle of the second groove side wall surface of the fourth holding part 753, the gap between the third holding part 743 and the first holding part 711, and the gap between the fourth holding part 753 and the second holding part 712 can be adjusted. This application does not impose specific limitations on this.

[0214] During the process of switching the foldable mechanism 130 from an inward-folded state or an outward-folded state to a flattened state, the elastic stop member 71 can elastically deform along the X-axis direction under the action of the first swing arm 74 and the second swing arm 75. When the first holding part 711 is pushed into the third holding part 743 under the action of the elastic restoring force of the elastic stop member 71 and is mutually locked with the third holding part 743, and the second holding part 712 is pushed into the fourth holding part 753 under the action of the elastic restoring force of the elastic stop member 71 and is mutually locked with the fourth holding part 753, the foldable mechanism 130 is in a flattened state. At this time, the first swing arm 74 and the second swing arm 75 cannot rotate relative to the base 10, so the stop assembly 70 achieves the stopping function.

[0215] When the foldable mechanism 130 switches from the flattened state to the inward folding state or the outward folding state, it needs to overcome the limiting resistance between the third holding part 743 and the first holding part 711, and between the fourth holding part 753 and the second holding part 712, so that the elastic stop member 71 can undergo elastic deformation along the X-axis direction, thereby allowing the first swing arm 74 and the second swing arm 75 to rotate relative to the base 10, and thus the foldable mechanism 130 can rotate normally.

[0216] In this embodiment, when the foldable mechanism 130 is in a suspended state, the third holding portion 743 of the first swing arm 74 is spaced apart from the first holding portion 711 of the elastic stop member 71, and the fourth holding portion 753 of the second swing arm 75 is spaced apart from the second holding portion 712 of the elastic stop member 71. Specifically, the fifth holding portion 744 of the first swing arm 74 and the first holding portion 711 of the elastic stop member 71 mutually hold each other, and the sixth holding portion 754 of the second swing arm 75 and the second holding portion 712 of the elastic stop member 71 mutually hold each other, thereby restricting the rotation of the first swing arm 74 and the second swing arm 75 relative to the base 10, thus keeping the foldable mechanism 130 in a suspended state.

[0217] It should be noted that the foldable mechanism 130 being in a hovering state means that the foldable mechanism 130 is in a non-flattened state, that is, an intermediate state between the inward folding state and the flattened state. In this case, the unfolding angle of the foldable mechanism 130 is α, which is greater than or equal to 0 degrees and less than 180 degrees. Alternatively, the foldable mechanism 130 being in a hovering state means that the foldable mechanism 130 is in an intermediate state between the flattened state and the outward folding state. In this case, the unfolding angle of the foldable mechanism 130 is α, which is greater than 180 degrees and less than or equal to 360 degrees. For example, α can be 90 degrees or 270 degrees. It should be understood that the unfolding angle α of the foldable mechanism 130 can be the angle between the first swing arm 74 and the second swing arm 75.

[0218] In this embodiment, the design of the fifth holding part 744 of the first swing arm 74 and the sixth holding part 754 of the second swing arm 75 can not only provide torque to the foldable mechanism 130 other than the damping component 30, improving the feel of the foldable terminal 1000, but also cooperate with the first holding part 711 and the second holding part 712 respectively to realize the foldable mechanism 130 to stop and hover at multiple angles, improving the user experience of the foldable terminal 1000.

[0219] Understandably, based on the required hovering angle of the foldable mechanism 130, the arrangement of the fifth holding part 744 on the first swing arm 74 and the arrangement of the sixth holding part 754 on the second swing arm 75 can be adapted accordingly. Furthermore, based on the required hovering damping force of the foldable mechanism 130, the structures of the fifth holding part 744 and the sixth holding part 754 can be adapted accordingly; for example, the shape and depth of the groove can be adapted accordingly, and this application does not impose specific limitations in this regard.

[0220] The above are merely some embodiments and implementation methods of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A foldable mechanism, characterized in that, The device includes a base, an elastic stop, a first swing arm, and a second swing arm. The elastic stop is mounted on the base and has a first holding portion and a second holding portion, which are respectively located on opposite sides of the elastic stop. The first swing arm includes a first rotating portion, which is rotatably connected to the base and located on the side of the elastic stop closer to the first holding portion. The first rotating portion has a third holding portion and a fifth holding portion, which are located on the circumferential surface of the first rotating portion. The second swing arm includes a second rotating portion, which is rotatably connected to the base and located on the side of the elastic stop closer to the second holding portion. The second rotating portion has a fourth holding portion, which is located on the circumferential surface of the second rotating portion. When the foldable mechanism is in the flattened state, the first locking part and the third locking part lock each other, and the second locking part and the fourth locking part lock each other; When the foldable mechanism is in a hovering state, the first holding part and the third holding part are spaced apart and mutually holding with the fifth holding part. When the foldable mechanism is in the hovering state, the unfolding angle of the foldable mechanism is greater than or equal to 0 degrees and less than 180 degrees, or the unfolding angle of the foldable mechanism is greater than 180 degrees and less than or equal to 360 degrees.

2. The foldable mechanism according to claim 1, characterized in that, The fifth holding part has multiple parts, which are arranged circumferentially around the first rotating part; When the foldable mechanism is in the hovering state, the first locking part and one of the fifth locking parts lock together.

3. The foldable mechanism according to claim 1 or 2, characterized in that, The first holding part is a protruding pin, which is provided on the surface of the elastic stop member facing the first rotating part; the third holding part is a groove, and the opening of the groove is located on the circumferential surface of the first rotating part. Alternatively, the first holding part is a groove, the opening of which is located on the surface of the elastic stop member facing the first rotating part, and the third holding part is a protruding pin, which is provided on the circumferential surface of the first rotating part; When the foldable mechanism is in a flattened state, the protruding pin and the groove engage with each other.

4. The foldable mechanism according to claim 3, characterized in that, The groove includes a first groove bottom wall and two first groove side walls. The two first groove side walls are located on opposite sides of the first groove bottom wall and are connected to the first groove bottom wall. The distance between the two first groove side walls gradually increases along the direction of the opening of the groove from the first groove bottom wall.

5. The foldable mechanism according to claim 3 or 4, characterized in that, The protruding pin includes a first top surface, two first side surfaces, and two first mating surfaces. The first top surface is the surface of the protruding pin facing the groove. The two first side surfaces are located on opposite sides of the first side surface and are arranged back to back. Each first mating surface is connected between the first top surface and one of the first side surfaces. Along the direction from the first top surface to the first side surface, the distance between the two first mating surfaces gradually increases.

6. The foldable mechanism according to any one of claims 1 to 5, characterized in that, The elastic stop includes a first leaf spring, which includes a first leaf spring portion and a second leaf spring portion. The first leaf spring portion is mounted on the base, and the second leaf spring portion is mounted on the side of the first leaf spring portion away from the second rotating portion. The first retaining portion is provided on the surface of the second leaf spring portion away from the first leaf spring portion.

7. The foldable mechanism according to claim 6, characterized in that, The base is provided with a first mounting groove, and the first leaf spring is mounted in the first mounting groove. The first leaf spring includes two first fixed parts and a first elastic part. Along the length direction of the base, the two first fixed parts are spaced apart and opposite to each other, and both abut against the groove wall of the first mounting groove. The first elastic part is located on the same side of the two first fixed parts and is fixedly connected between the two first fixed parts. The second leaf spring is provided on the surface of the first elastic part facing the first fixed part.

8. The foldable mechanism according to any one of claims 1 to 7, characterized in that, The foldable mechanism further includes a cover plate mounted on the base and covering at least a portion of the resilient stop.

9. The foldable mechanism according to claim 8, characterized in that, The cover plate is provided with a first clearance notch and a second clearance notch. Both the first clearance notch and the second clearance notch penetrate the cover plate along the thickness direction. The first clearance notch avoids the first swing arm, and the second clearance notch avoids the second swing arm.

10. The foldable mechanism according to any one of claims 1 to 9, characterized in that, The foldable mechanism further includes a first fixed frame, a second fixed frame, a first pressure plate, and a second pressure plate. The first fixed frame is slidably connected to the first swing arm, the second fixed frame is slidably connected to the second swing arm, the first pressure plate is rotatably connected to the first fixed frame, and the second pressure plate is rotatably connected to the second fixed frame. When the foldable mechanism is in the flattened state, the first swing arm and the second swing arm are relatively flattened, the first fixing frame and the second fixing frame are respectively located on opposite sides of the base, the first pressure plate and the second pressure plate are respectively located on opposite sides of the base, the top surface of the first fixing frame is flush with the top surface of the first pressure plate, and the top surface of the second fixing frame is flush with the top surface of the second pressure plate.

11. The foldable mechanism according to claim 10, characterized in that, When the foldable mechanism is in the inward folding state, the first swing arm and the second swing arm are folded relative to each other, and the first fixed frame, the second fixed frame, the first pressure plate and the second pressure plate are located on the same side of the base. The first fixed frame, the first pressure plate, the base, the second fixed frame and the second pressure plate enclose and form an avoidance space, and the cross-section of the avoidance space is teardrop-shaped.

12. The foldable mechanism according to claim 10 or 11, characterized in that, When the foldable mechanism is in the outward folded state, the first swing arm and the second swing arm are folded back to back, and the first fixed frame, the second fixed frame, the first pressure plate and the second pressure plate are located on the same side of the base. The top surface of the base, the top surface of the first fixed frame, the top surface of the first pressure plate, the top surface of the second fixed frame and the top surface of the second pressure plate are flush.

13. A foldable terminal, characterized in that, It includes a first housing, a second housing, and a foldable mechanism as described in any one of claims 1 to 12, the foldable mechanism being connected between the first housing and the second housing.

14. The foldable terminal according to claim 13, characterized in that, The foldable terminal also includes a display module, which includes a first display portion, a second display portion, and a foldable portion. The first display portion is mounted on the first housing, the second display portion is mounted on the second housing, and the foldable portion is connected between the first display portion and the second display portion and is disposed opposite to the foldable mechanism.

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