Foldable mechanism and foldable terminal

Abstract

The invention provides a foldable mechanism and a foldable terminal. In the foldable mechanism, an elastic stop piece is installed on a base, a first clamping part and a second clamping part of the elastic stop piece are arranged on the two opposite sides of the elastic stop piece respectively, and a first rotating part of a first swing arm is rotationally connected with the base and located on the side, close to the first clamping part, of the elastic stop piece. The first swing arm comprises a first rotating part, the third clamping part of the first rotating part is arranged on the circumferential surface of the first rotating part, the second swing arm comprises a second rotating part, the second rotating part is rotationally connected with the base and located on the side, close to the second clamping part, of the elastic stopping piece, the second rotating part is provided with a fourth clamping part, and the fourth clamping part is arranged on the circumferential surface of the second rotating part. When the foldable mechanism is in a flattened state, the first swing arm and the second swing arm are relatively flattened, 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 that the flattening retention force of the foldable mechanism is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of foldable terminals, and in particular to a foldable mechanism and a foldable terminal. Background Art

[0002] With technological advancements, the era of large-screen smart devices has arrived. Foldable devices are gaining popularity among users due to their large screens and portability. Currently, foldable devices often utilize a folding mechanism to achieve folding and unfolding. However, when the foldable mechanism is flattened, its flattening retention is poor, failing to effectively support the display module. This can cause the display module to sag and sink, reducing the reliability of foldable devices. Summary of the Invention

[0003] The present application provides a foldable mechanism and a foldable terminal, which are used to improve the flattening retention force of the foldable mechanism, achieve effective support for the display module, avoid the problem of the display module sinking, and ensure the reliability of the foldable terminal.

[0004] In a first aspect, the present application provides a foldable mechanism, comprising a base, an elastic stopper, a first swing arm and a second swing arm, the elastic stopper being mounted on the base, the elastic stopper being provided with a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion being respectively provided on opposite sides of the elastic stopper, the first swing arm comprising a first rotating portion, the first rotating portion being rotatably connected to the base and being located on a side of the elastic stopper close to the first clamping portion, the first rotating portion being provided with a third clamping portion, the third clamping portion being provided on a circumferential surface of the first rotating portion, the second swing arm comprising a second rotating portion, the second rotating portion being rotatably connected to the base and being located on a side of the elastic stopper close to the second clamping portion, the second rotating portion being provided with a fourth clamping portion, the fourth clamping portion being provided on a circumferential surface of the second rotating portion;

[0005] When the foldable mechanism is in a flattened state, the first swing arm and the second swing arm are relatively flattened, the first clamping portion and the third clamping portion are clamped to each other, and the second clamping portion and the fourth clamping portion are clamped to each other, so as to limit the rotation of the first swing arm and the second swing arm relative to the base, thereby realizing a flattening stop effect on the foldable mechanism.

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

[0007] In one embodiment, the first rotating portion is further provided with a fifth clamping portion, and the fifth clamping portion is provided on the circumference of the first rotating portion;

[0008] When the foldable mechanism is in a hovering state, the first holding portion is spaced apart from the third holding portion and is mutually engaged with the fifth holding portion. 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 portion can not only provide torque for the foldable mechanism and improve the user experience of the foldable terminal, but also cooperate with the first holding portion to achieve 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 at intervals around the circumference of the first rotating portion;

[0011] When the foldable mechanism is in a suspended state, the first clamping portion and one of the fourth clamping portions clamp each other, so as to achieve the suspended position of the foldable mechanism at multiple unfolding angles.

[0012] In one embodiment, the first holding portion is a convex pin, which is provided on a surface of the elastic stopper facing the first rotating portion, and the third holding portion is a groove, the opening of which is located on the circumference of the first rotating portion;

[0013] Alternatively, the first holding portion is a groove, the opening of the groove is located on the surface of the elastic stopper facing the first rotating portion, and the third holding portion is a convex pin, which is provided on the circumference of the first rotating portion;

[0014] When the foldable mechanism is in a flattened state, the protruding pin and the groove engage with each other to limit the rotation of the first swing arm relative to the base, thereby achieving a flattening stop effect on 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 respectively located on opposite sides of the first groove bottom wall and connected to the first groove bottom wall, and the distance between the two first groove side walls gradually increases along the direction of the first groove bottom wall facing the opening of the groove.

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

[0017] In one embodiment, the convex pin includes a first top surface, two first side surfaces and two first mating surfaces. The first top surface is the surface of the convex pin facing the groove. The two first side surfaces are respectively 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, and the distance between the two first mating surfaces gradually increases along the direction from the first top surface to the first side surface.

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

[0019] In one embodiment, the elastic stopper includes a first leaf spring. The first leaf spring 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背离 the second rotating portion. The first clamping portion is provided on the surface of the second leaf spring portion背离 the first leaf spring portion.

[0020] By adopting the combined structure of the first leaf spring portion and the second leaf spring portion, the overall stiffness of the first leaf spring can be increased, and further the stopping stiffness of the elastic stopper can be increased.

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

[0022] Under this setting, the first leaf spring portion is in a "U" shape. The two first fixing portions and the first elastic portion form two "L" - shaped barb structures. The two first fixing portions are both in contact with the groove side wall of the first mounting groove to limit the movement of the first leaf spring in the width direction and length direction of the base in the first mounting groove, ensuring the stable assembly of the first leaf spring on the base. It should be noted that there is an unclear expression "背离" in the original text. I have translated it according to the general context, but it may need to be adjusted according to the specific correct meaning.

[0023] In one embodiment, the foldable mechanism further includes a cover plate, which is mounted on the base and covers at least a portion of the elastic stopper to protect the elastic stopper and prevent other components from affecting the normal operation of the elastic stopper.

[0024] In one embodiment, the cover plate is provided with a first avoidance gap and a second avoidance gap, and the first avoidance gap and the second avoidance gap both penetrate the cover plate along the thickness direction of the cover plate. The first avoidance gap avoids the first swing arm, and the second avoidance gap avoids the second swing arm, so as to avoid interference between the cover plate and the first swing arm and the second swing arm, thereby ensuring the smooth rotation of the foldable mechanism.

[0025] In one embodiment, the foldable mechanism further includes a first fixing frame, a second fixing frame, a first pressing plate, and a second pressing plate, wherein the first fixing frame is slidably connected to the first swing arm, the second fixing frame is slidably connected to the second swing arm, the first pressing plate is rotatably connected to the first fixing frame, and the second pressing plate is rotatably connected to the second fixing 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 problem of the display module sinking, avoid the problem of flatness light and shadow difference, low strength reliability and other problems of the display module, and ensure the reliability of the use of the foldable terminal.

[0027] In one embodiment, when the foldable mechanism is in an inwardly 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, and the first fixing frame, the first pressure plate, the base, the second fixing frame and the second pressure plate form an avoidance space. The cross-section of the avoidance space is in the shape of a water droplet, so as to avoid the display module and prevent the foldable mechanism from interfering with the display module, thereby preventing the foldable mechanism from damaging the foldable part and ensuring the reliability of the foldable terminal.

[0028] In one embodiment, when the foldable mechanism is in an 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, and the top surface of the base, the top surface of the first fixing frame, the top surface of the first pressure plate, the top surface of the second fixing frame and the top surface of the second pressure plate are flush to jointly support the display module, thereby ensuring effective support of the display module by the foldable mechanism, avoiding the problem of the display module sinking, avoiding the problem of flatness light and shadow difference, low strength reliability and other problems of the display module, and ensuring the reliability of use of the foldable terminal.

[0029] In a second aspect, the present application provides a foldable terminal, comprising a first housing, a second housing, and any one of the above-mentioned foldable mechanisms, wherein the foldable mechanism is connected between the first housing and the second housing.

[0030] When the foldable terminal described in the present application is in a flattened state, the first swing arm and the second swing arm are relatively flattened, the first clamping portion and the third clamping portion are mutually clamped, and the second clamping portion and the fourth clamping portion are mutually clamped to limit the rotation of the first swing arm and the second swing arm relative to the base, thereby achieving a flattening stop effect on the foldable terminal.

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

[0032] The elastic stopper, the first swing arm and the second swing arm can improve the flattening holding force of the foldable mechanism. The foldable mechanism can effectively support the foldable part, avoid the problem of the display module sinking, and ensure the reliability of the foldable terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solution of this application, the drawings required for this application will be described below.

[0034] Figure 1 This is a schematic structural diagram of the foldable terminal provided by the present application in an inwardly folded state;

[0035] Figure 2 yes Figure 1 A schematic structural diagram of the foldable terminal shown is in a flattened state;

[0036] Figure 3 yes Figure 2 A schematic structural diagram of the foldable terminal shown is in an outwardly folded state;

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

[0038] Figure 5 yes Figure 4 A schematic diagram of the exploded structure of the foldable mechanism shown;

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

[0040] Figure 7 yes Figure 5 A schematic structural diagram of the connecting components in the foldable mechanism shown;

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

[0042] Figure 9 yes Figure 8 Schematic diagram of the exploded structure of the third swing arm shown;

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

[0044] Figure 11 yes Figure 10 Schematic diagram of the exploded structure of the fifth swing arm shown;

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

[0046] Figure 13 yes Figure 5 A schematic structural diagram of the pressure plate assembly in the foldable mechanism shown;

[0047] Figure 14 yes Figure 5 A schematic structural diagram of the stop assembly in the foldable mechanism shown;

[0048] Figure 15 yes Figure 14 A schematic structural diagram of the elastic stopper in the stopper assembly shown;

[0049] Figure 16 yes Figure 15 The cross-sectional structure diagram of the elastic stopper after being cut along II;

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

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

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

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

[0054] Figure 21 yes Figure 20 A schematic cross-sectional view of the foldable mechanism taken along line II-II;

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

[0056] Figure 23 yes Figure 22 A schematic cross-sectional view of the foldable mechanism taken along line III-III;

[0057] Figure 24 yes Figure 4 The foldable mechanism shown is a schematic cross-sectional structure diagram after being cut along IV-IV. DETAILED DESCRIPTION

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

[0059] See also Figures 1 to 3 , Figure 1 is a structural diagram of the foldable terminal 1000 provided in this application in an inwardly folded state. Figure 2 yes Figure 1 The structure diagram of the foldable terminal 1000 shown is in a flattened state. Figure 3 yes Figure 2 The structure diagram of the foldable terminal 1000 is shown in the 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, vehicle-mounted device, 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 flat state.

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

[0062] It should be noted that the qualifiers such as parallel and perpendicular mentioned in this application regarding relative positional relationships are all based on the current state of the art, rather than being absolutely strict definitions in a mathematical sense. A small amount of deviation is allowed, and both approximately parallel and approximately perpendicular are acceptable. For example, A and B are parallel, which means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 degrees and 10 degrees. For example, A and B are perpendicular, which means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 degrees and 100 degrees.

[0063] in, Figure 1 The foldable terminal 1000 and Figure 3 The foldable terminals 1000 are all in a folded state, wherein the size of the foldable terminals 1000 along the X-axis direction is relatively small, and the foldable terminals 1000 are easy to carry. Figure 2 The foldable terminal 1000 is shown in a flattened state. Figure 2 The unfolding angle of the foldable terminal 1000 is 180 degrees. In this case, the size of the foldable terminal 1000 along the X-axis direction is large, and the foldable terminal 1000 has a large display area.

[0064] It should be noted that the angles illustrated in this application are allowed to have slight deviations. For example, Figure 2 The foldable terminal 1000 is shown as having an unfolding angle of 180 degrees, which 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 described as examples below should be understood in the same way. It should be understood that the foldable terminal 1000 shown in this application is a terminal that can be folded twice. In other embodiments, the foldable terminal 1000 can also be a terminal that can be folded three or more times.

[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. The display surface 201 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 can be bent 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 exemplarily given as follows: Figure 2 and Figure 3 The dotted line in the middle does not limit the display module 200 in actual application scenarios.

[0067] like Figure 1 As shown, the foldable terminal 1000 is in an inwardly 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. In this state, 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 the display module 200.

[0068] like Figure 2 As shown, the foldable terminal 1000 is in a flattened state. The foldable device 100 and display module 200 are both flattened. The first display portion 210 and the second display portion 220 are relatively flat, and the foldable portion 230 is flattened without bending. In this state, the 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, enabling 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 outwardly folded state, with both the foldable device 100 and the display module 200 in a folded state. The display module 200 is located outside the foldable device 100, with the first display portion 210 and the second display portion 220 facing each other, and the foldable portion 230 bent. At this point, the exposed area of ​​the display module 200 is relatively large, providing a large display area. Users can select a specific area of ​​the display module 200 for display based on 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. This improves the flexibility of the foldable terminal 1000 and enhances 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 inward and outward, 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 can also be a foldable terminal that can only fold inward, 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 folded state.

[0071] The foldable device 100 includes a first shell 110, a second shell 120 and a foldable mechanism 130. The foldable mechanism 130 is connected between the first shell 110 and the second shell 120 to achieve a rotational connection between the first shell 110 and the second shell 120. The first shell 110 and the second shell 120 can rotate relative to each other through the foldable mechanism 130. The foldable mechanism 130 can enable the foldable device 100 to switch between an inward folded state, a flattened state and an outward folded state. Specifically, the first shell 110 carries the first display part 210, and the second shell 120 carries the second display part 220. In other words, the first display part 210 is mounted on the first shell 110, and the second display part 220 is mounted on the second shell 120. The foldable mechanism 130 is arranged opposite to the foldable part 230.

[0072] When the foldable device 100 is in the folded state, Figure 1 As shown, the first shell 110 and the second shell 120 are folded relative to each other, and the foldable mechanism 130 is in an inward folded state. When the foldable device 100 is in a flattened state, as shown in FIG. Figure 2 , the first shell 110 and the second shell 120 are relatively flat, the angle between the first shell 110 and the second shell 120 can be 180 degrees, and the foldable mechanism 130 is in the flattened state. When the foldable device 100 is in the outward folded state, as shown in FIG. Figure 3 As shown, the first shell 110 and the second shell 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 the flattened state, the foldable mechanism 130 is in the flattened state, and the foldable portion 230 of the display module 200 is also in the flattened state. To ensure that the foldable mechanism 130 effectively supports the foldable portion 230, the foldable mechanism 130 must have a good flattening angle and flattening retention force to maintain the flattened state. However, existing foldable mechanisms, when in the flattened state, have poor flattening angles and flattening retention forces. This prevents the foldable mechanism from effectively supporting the foldable portion 230, causing the foldable portion 230 to easily sag and sink. This can cause problems such as poor flatness and light and shadow differences in the display module 200, as well as low strength and reliability. Consequently, the foldable terminal 1000 has poor reliability.

[0074] When the foldable terminal 1000 shown in the present application is in a flattened state, the flattening angle and flattening retention force of the foldable mechanism 130 are good. The foldable mechanism 130 can effectively support the foldable part 130, and the foldable part 130 will not sink. It can not only ensure the flatness, light and shadow, and strength reliability of the display module 200, but also will not affect the normal use of the display module 200, thereby improving the reliability of the foldable terminal 1000.

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

[0076] See also Figure 4 and Figure 5 , Figure 4 yes Figure 2 The schematic structural diagram of the foldable mechanism 130 of the foldable device 100 in the foldable terminal 1000 is shown. Figure 5 yes Figure 4 A schematic diagram of the exploded structure of the foldable mechanism 130 is 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, the damping assembly 30, the synchronizing assembly 40, and the stop assembly 70 are all mounted on the base 10. The damping assembly 30, the pressure plate assembly 50, and the 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, the damping assembly 30, the pressure plate assembly 50, and the stop assembly 70 can all be folded inward, flattened, or folded outward relative to the base 10, thereby transitioning between the folded-in, flattened, and folded-out states.

[0078] See also Figure 6 , Figure 6 yes Figure 5A schematic structural diagram of the base 10 in the foldable mechanism 130 is shown.

[0079] In this embodiment, the base 10 extends along the Y-axis. The top surface 101 of the base 10 is arc-shaped. Exemplarily, 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 assembly groove 10a, a second assembly groove 10b, a third assembly groove 10c, a fourth assembly groove 10d, a fifth assembly groove 10e, a sixth assembly groove 10f, a seventh assembly 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 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 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 toward the bottom surface 102 (in the negative direction of the Z axis as shown) of the base 10. Specifically, 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 extend through 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 “back” used in the embodiment of the present application to describe the foldable terminal 1000 are mainly based on the position of the foldable terminal 1000 in the attached Figure 2 The display orientation is explained in the figure, with the positive direction of the Z axis as the "top", the negative direction of the Z axis as the "bottom", the positive direction of the X axis as the "right", the negative direction of the X axis as the "left", the positive direction of the Y axis as the "back", and the negative direction of the Y axis as the "front". It does not constitute a limitation on 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 figure), the first assembly groove 10a and the second assembly groove 10b are spaced apart and arranged opposite each other. The first assembly groove 10a and the second assembly groove 10b are both arc-shaped grooves, and the axes of the first assembly groove 10a and the second assembly groove 10b are both parallel to the Y-axis direction.

[0082] Exemplarily, there are two first assembly slots 10a and two second assembly slots 10b, and 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 other embodiments, there may be one or more first assembly slots 10a, and / or there may be one or more second assembly slots 10b, and this application does not impose specific limitations on this.

[0083] It should be noted that the "and / or" mentioned in this application refers to both "and" and "or". For example, "and / or" includes three situations: only exists, only exists, and and exists at the same time. The following description of "and / or" should 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 direction 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 the first assembly groove 10a. 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 assembly groove 10b and the third assembly groove 10c. Along the width direction of the base 10 (the X-axis direction in the figure), the third assembly groove 10c and the fourth assembly groove 10d partially overlap. Among them, the third assembly groove 10c and the fourth assembly groove 10d are both arc-shaped grooves, and the axis of the third assembly groove 10c and the axis of the fourth assembly groove 10d are both parallel to the Y-axis direction.

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

[0086] Illustratively, there are two third assembly slots 10c and two fourth assembly slots 10d, and 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 other embodiments, there may be one, three, or more third assembly slots 10c, and / or there may be one, three, or more fourth assembly slots 10d, and this application does not impose specific limitations on this.

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

[0088] Illustratively, there are two fifth assembly slots 10e and two sixth assembly slots 10f, and along the length of the base 10, the two fifth assembly slots 10e are spaced apart, and the two sixth assembly slots 10f are spaced apart. In other embodiments, there may be one, three, or more fifth assembly slots 10e, and / or one, three, or more sixth assembly slots 10f, and this application does not impose any 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. The seventh assembly slot 10g 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, spaced apart along the length of the base 10. In other embodiments, there may be one, three, or more seventh assembly slots 10g, and this application does not impose any specific limitation thereto.

[0090] The first mounting slot 10h is located between the two fifth mounting slots 10e and between 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. For example, there are two first mounting slots 10h, spaced apart along the length of the base 10. In other embodiments, there may be one, three, or more first mounting slots 10h, and this application does not impose any specific limitation on this.

[0091] The second mounting slot 10i is located to the left of the first mounting slot 10h and communicates with the first mounting slot 10h. It is located between the two fifth mounting slots 10e and is spaced apart from both fifth mounting slots 10e. Exemplarily, there are two second mounting slots 10i, 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, three, or more second mounting slots 10i, and this application does not impose any specific limitations thereon.

[0092] The third mounting slot 10j is located to the right of the first mounting slot 10h and communicates with the first mounting slot 10h. It is located between the two sixth mounting slots 10f and is spaced apart from both sixth mounting slots 10f. Exemplarily, 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, three, or more third mounting slots 10j, and this application does not impose any specific limitation thereto.

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

[0094] Please also refer to Figure 7 , Figure 7 yes Figure 5 A schematic structural diagram of the connecting assembly 20 in the foldable mechanism 130 is shown.

[0095] The connecting assembly 20 is mounted in the first, second, third, and fourth mounting slots 10a, 10b, 10c, and 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 rotationally connected to the base 10 and slidably connected to the first fixing frame 21. The fourth swing arm 24 is rotationally connected to the base 10 and slidably connected to the second fixing frame 22. The fifth swing arm 25 is rotationally connected to the base 10 and is rotationally connected to the first fixing frame 21. The sixth swing arm 26 is rotationally connected to the base 10 and is rotationally connected to the second fixing frame 22.

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

[0097] For example, when the connecting assembly 20 switches from the inwardly folded state to the outwardly 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 the unfolded state to the 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 some other embodiments, there may be multiple connecting components 20 (more than two), and more than two connecting components 20 may be spaced apart from each other along the Y-axis direction. Among them, 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 the components, and the connection relationship between the components and the components outside the components can all refer to the relevant design of the connecting component 20 below, and the detailed structure or position arrangement of the components may be different. It should be noted that the first fixing frames 21 of the multiple connecting components 20 can be independent structural members or multiple parts of an integrated structural member. And / or, the second fixing frames 22 of the multiple connecting components 20 can be independent structural members or multiple parts of an integrated structural member.

[0099] The first fixing frame 21 has a top surface 211, a bottom surface 212, a first avoidance surface 213, a right side 214, a left side 215, a rear side 216 and a front side 217. Along the thickness direction of the first fixing frame 21 (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 avoidance surface 213 are arranged opposite to each other. The first avoidance surface 213 is located on the side of the top surface 211 close 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 avoidance surface 213 and the bottom surface 212 gradually decreases. Exemplarily, the first avoidance surface 213 is an inclined surface. In some other embodiments, the first avoidance surface 213 may also be a curved surface, and this application does not impose specific restrictions on this.

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

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

[0102] The first chute 21a extends through the bottom surface 212 and the left side surface 215 of the first fixed frame 21. In other embodiments, the first chute 21a may not extend through the bottom surface 212 of the first fixed frame 21, and / or the first chute 21a may not extend through the left side surface of the first fixed frame 21, and this application does not impose specific limitations on this. Exemplarily, there are two first chute 21a. The two first chute 21a are spaced apart along the length of the first fixed frame 21. In other embodiments, there may be one or more than three first chute 21a, and this application does not impose specific limitations on this.

[0103] Along the length direction of the first fixed 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 passes through the top surface 211, the first avoidance surface 213 and the left side 215 of the first fixed frame 21. In some other embodiments, the first slide groove 21a may not pass through at least one of the top surface 211, the first avoidance surface 213 and the left side 215 of the first fixed frame 21, and this application does not impose specific restrictions on this. Exemplarily, 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 than three first slide grooves 21a, and this application does not impose specific restrictions on this.

[0104] The third chute 21c is located between the first chute 21a and the second chute 21b, and is spaced apart from the first chute 21a and the second chute 21b. The third chute 21c passes through the bottom surface 212, the first avoidance surface 213, and the left side 215 of the first fixed frame 21. In some other embodiments, the third chute 21c may not pass through at least one of the bottom surface 212, the first avoidance surface 213, and the left side 215 of the first fixed frame 21, and this application does not impose specific limitations on this. Exemplarily, there are two third chute 21c, and each third chute 21c is located between a first chute 21a and a second chute 21b. In some other embodiments, there may be one or more than three third chute 21c, and this application does not impose specific limitations on this.

[0105] The fourth mounting slot 21d is located between the first and third slots 21a, 21c, and is spaced apart from both the first and third slots 21a, 21c. The opening of the fourth mounting slot 21d is located between the top surface 211 and the first relief surface 213 of the first fixed frame 21. The fourth mounting slot 21d is recessed from the top surface 211 and the first relief surface 213 of the first fixed frame 21 toward the bottom surface 212 (in the negative direction of the Z axis as shown) and extends through the right side 214 and left side 215 of the first fixed frame 21. In other embodiments, the fourth mounting slot 21d may not extend through the right side 214 of the first fixed frame 21, and / or the fourth mounting slot 21d may not extend through the left side 215 of the first fixed frame 21. This is not specifically limited in this application. Exemplarily, there are two fourth mounting slots 21d, each located between a first slot 21a and a third slot 21c. In some other embodiments, there may be one or more than three fourth mounting grooves 21d, and this application does not impose any specific limitation on this.

[0106] The fifth mounting groove 21e is located on the side of the first slide 21a facing away from the fourth mounting groove 21d and is spaced apart from the first slide 21a. The opening of the fifth mounting groove 21e is located on the top surface 211 and the first avoidance surface 213 of the first fixed frame 21. The fifth mounting groove 21e is recessed from the top surface 211 and the first avoidance surface 213 of the first fixed frame 21 toward the bottom surface 212 (the negative direction of the Z axis in the figure) and passes through the right side 214 and the left side 215 of the first fixed frame 21. In some other embodiments, the fifth mounting groove 21e may not pass through the right side 214 of the first fixed frame 21, and / or the fifth mounting groove 21e may not pass through the left side 215 of the first fixed frame 21, and this application does not impose specific limitations on this. Exemplarily, there are two fifth mounting grooves 21e, each of which is located on the side of a first slide 21a facing away from a fourth mounting groove 21d. In some other embodiments, there may be one or more than three fifth mounting grooves 21e, and this application does not impose any specific limitation on this.

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

[0108] Exemplarily, there are three first avoidance grooves 21f, each located between two fourth mounting grooves 21d, spaced apart from the two fourth mounting grooves 21d, and spaced apart in sequence along the length of the first fixing frame 21. One first avoidance groove 21f is located between two first chutes 21a, spaced apart from both first chutes 21a. In the other two first avoidance grooves 21f, each first avoidance groove 21f is located on a side of a third chute 21c facing away from a first chute 21a, and spaced apart from the third chute 21c. In other embodiments, there may be fewer than two or more than four first avoidance grooves 21f, and this application does not impose any specific limitation thereto.

[0109] The opening of the first rotating groove 21g is located on the top surface 211 and the first avoidance surface 213 of the first fixed frame 21. The first rotating groove 21g is recessed from the top surface 211 and the first avoidance surface 213 of the first fixed frame 21 toward the bottom surface 212. The first rotating groove 21g is an arc-shaped groove, and the axis of the first rotating groove 21g is parallel to the Y-axis direction. Exemplarily, there are eight first rotating grooves 21g. One first rotating groove 21g is located on the rear side of the first fixed frame 21 and passes through the rear side surface 216 of the first fixed frame 21. Of the two first rotating grooves 21g, each first rotating groove 21g is located between a second slide groove 21b and a fourth mounting groove 21d, passes through the groove side wall surface of the second slide groove 21b, and is connected to the second slide groove 21b. Of the two first rotation grooves 21g, each first rotation groove 21g is located between a fourth mounting groove 21d and a first avoidance groove 21f, and penetrates the groove side wall of the first avoidance groove 21f and is connected to the first avoidance groove 21f. The two first rotation grooves 21g respectively penetrate the two groove side walls of a first avoidance groove 21f and are connected to the first avoidance groove 21f. One first rotation groove 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, the number of first rotation grooves 21g may be less than seven or more than nine, and this application does not impose specific limitations on this.

[0110] The second fixing frame 22 includes a second avoidance surface 223, which is located on a side of the top surface 221 of the second fixing frame 22 that is close to 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 slide groove 22a, a fifth slide groove 22b, a sixth slide groove 22c, a sixth mounting groove 22d, a seventh mounting groove 22e, a second avoidance groove 22f, and a second rotation groove 22g.

[0111] It should be noted that the second avoidance 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 avoidance groove 22f and the second rotation groove 22g in the second fixed frame 22 can refer 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 avoidance groove 21f and the first rotation groove 21g in the first fixed frame 21, 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. Each third swing arm 23 is also mounted in one of the second guide slots 21b and one of the fourth mounting slots 21d of the first fixed frame 21, and can slide relative to the first fixed frame 21 within the second guide slot 21b and the fourth mounting slot 21d. In other embodiments, there may be one, or more than three third swing arms 23, and this is not a specific limitation in this application.

[0113] In this embodiment, the two third swing arms 23 have the same structure and can both adopt the related designs of the third swing arm 23 described below. In other embodiments, the two third swing arms 23 can also have different structures. For example, the two third swing arms 23 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two third swing arms 23 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

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

[0115] The third swing arm 23 includes a third rotating portion 23a, a third sliding portion 23b, a first transmission portion 23c, and a third connecting portion 23d. The third rotating portion 23a is rotationally connected to the base 10. The third sliding portion 23b is fixedly connected to the third rotating portion 23a and is slidably connected to the first fixed frame 21. The first transmission portion 23c is located on one side of the third sliding portion 23b and is fixedly connected to the third sliding portion 23b. The third connecting portion 23d is fixedly connected between the third rotating portion 23a and the third sliding portion 23b. For example, the third sliding portion 23b is spaced apart from the third rotating portion 23a and is fixedly connected via the third connecting portion 23d. In other embodiments, the third sliding portion 23b and the third rotating portion 23a may also be fixedly connected using other methods, which are not specifically limited in this application.

[0116] The structure of the third rotating portion 23a matches that of the first assembly slot 10a. The third rotating portion 23a is mounted in the first assembly slot 10a and can rotate relative to the base 10 within the first assembly slot 10a, thereby achieving a rotational connection between the third swing arm 23 and the base 10. In this embodiment, the third rotating portion 23a includes a first rotating cylinder 231 and a second rotating cylinder 232. The structure of the first rotating cylinder 231 matches that of the first assembly slot 10a. The first rotating cylinder 231 is mounted in the first assembly slot 10a and can rotate relative to the base 10 within the first assembly slot 10a. The first rotating cylinder 231 defines a first rotating groove 233. The first rotating groove 233 is an arc-shaped groove, with its axis parallel to the Y-axis and coinciding with the axis of the first assembly slot 10a. The structure of the second rotating cylinder 232 matches that of the first rotating groove 233. The second rotating cylinder 232 is mounted 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 drum 232 relative to the first rotating drum 231 coincides with the rotation center of the first rotating drum 231 relative to the base 10 .

[0117] The third swing arm 23 is rotatable relative to the base 10 through the design of the first rotating cylinder 231 and the second rotating cylinder 232, which ensures the overlap between the third swing arm 23 and the base 10 and the assembly stability between the third swing arm 23 and the base 10. In other embodiments, the third swing arm 23 may also be rotatable relative to the base 10 through other methods, which are not specifically limited in this application.

[0118] The structure of the third sliding portion 23b matches that of the second chute 21b. The third sliding portion 23b is mounted in the second chute 21b and can slide relative to the first fixed frame 21 within the second chute 21b, thereby achieving a sliding connection between the third swing arm 23 and the first fixed frame 21. Along the width of the third sliding portion 23b (the Y-axis shown in the figure), the first transmission portion 23c is located on one side of the third sliding portion 23b and within the fourth mounting slot 21d. Driven by the third sliding portion 23b, it can slide relative to the first fixed frame 21 within the fourth mounting slot 21d. The first transmission portion 23c is provided with a plurality of first teeth 234, each of which is disposed on the surface of the first transmission portion 23c facing away from the first fixed frame 21 (i.e., the surface facing the opening of the fourth mounting slot 21d). The plurality of first teeth 234 are arranged sequentially along the sliding direction of the first transmission portion 23c relative to the first fixed frame 21 (the X-axis shown in the figure). Exemplarily, the first transmission portion 23c has a "rack" shape.

[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 also be assembled from other structural parts, and this application does not impose specific limitations on this.

[0120] Specifically, the first sub-sliding portion 237 is provided with a first positioning hole 238. The opening of the first positioning hole 238 is located on the surface of the first sub-sliding portion 237 facing away from the third connecting portion 23d. For example, there are two first positioning holes 238, which are spaced apart. In other embodiments, there may be one or more first positioning holes 238, and this application does not impose any 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, and the first positioning post 240 is provided on the surface of the second sub-sliding portion 239 facing the first sub-sliding portion 237. The structure of the first positioning post 240 is compatible with 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, thereby ensuring the assembly accuracy between the first transmission body 236 and the first swing arm body 235. Exemplarily, there are two first positioning posts 240, and the two first positioning posts 240 are arranged at intervals and are respectively inserted into the two first positioning holes 238. In some other embodiments, there can also be one or more than three first positioning posts 240, and this application does not impose any specific restrictions 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 portion 237 of the first swing arm body 235 is provided with a second positioning column, and the second sub-sliding portion 239 of the first transmission body 236 is provided with a second positioning hole. This application does not impose any specific restrictions on this.

[0124] See also Figure 7 There are two fourth swing arms 24, each mounted in the two second mounting slots 10b of the base 10. Each fourth swing arm 24 is also mounted in a fifth guide slot 22b and a sixth mounting slot 22d of the second fixing bracket 22, and can slide relative to the second fixing bracket 22 within the fifth guide slot 22b and the sixth mounting slot 22d. In other embodiments, there may be one or more than three fourth swing arms 24, and this is not a specific limitation in this application.

[0125] In this embodiment, the two fourth swing arms 24 have the same structure and can both adopt the related designs of the fourth swing arm 24 described below. In other embodiments, the two fourth swing arms 24 can have different structures. For example, the two fourth swing arms 24 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two fourth swing arms 24 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

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

[0127] The structure of the fourth rotating portion 24a is compatible with the structure of the second assembly slot 10b. The fourth rotating portion 24a is mounted in the second assembly slot 10b and can rotate relative to the base 10 within the second assembly slot 10b to achieve a rotational connection between the fourth swing arm 24 and the base 10. The structure of the fourth sliding portion 24b is compatible with the structure of the fifth slide slot 22b. The fourth sliding portion 24b is mounted in the fifth slide slot 22b and can slide relative to the second fixed frame 22 within the fifth slide slot 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 portion 24b (the Y-axis direction in the figure), the second transmission portion 24c is located on one side of the fourth sliding portion 24b and in the sixth mounting slot 22d. Driven by the fourth sliding portion 24b, the second transmission portion 24c can slide relative to the second fixed frame 22 within the sixth mounting slot 22d.

[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 refer 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, and will not be repeated here.

[0129] There are two fifth swing arms 25, each mounted in the two third mounting slots 10c of the base 10. Both fifth swing arms 25 are rotatable relative to the base 10 within the third mounting slots 10c. The two fifth swing arms 25 are also mounted in the two fifth mounting slots 21e of the first fixing frame 21, each rotatable relative to the first fixing frame 21 within the fifth mounting slots 21e. In other embodiments, there may be one, or more than three, fifth swing arms 25, and this is not a specific limitation in this application.

[0130] In this embodiment, the two fifth swing arms 25 have the same structure and can both adopt the related designs of the fifth swing arm 25 described below. In other embodiments, the two fifth swing arms 25 can have different structures. For example, the two fifth swing arms 25 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two fifth swing arms 25 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

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

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

[0133] The structure of the fifth rotating portion 25a is compatible with the structure of the third assembly groove 10c. The fifth rotating portion 25a is mounted in the third assembly groove 10c and can rotate relative to the base 10 in 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 portion 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 compatible with the structure of the third assembly groove 10c. The fifth rotating cylinder 251 is mounted in the third assembly groove 10c and can rotate relative to the base 10 in 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 compatible with the structure of the third rotating groove 254. The sixth rotating cylinder 252 is mounted 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 is provided with a fourth rotating groove 255. The fourth rotating groove 255 is an arc-shaped groove, the axis of which 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 compatible with that of the fourth rotating groove 255. The seventh rotating cylinder 253 is mounted 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 is rotatable relative to the base 10 through the design of the fifth rotating cylinder 251, the sixth rotating cylinder 252, and the seventh rotating cylinder 253. This ensures the overlap between the fifth swing arm 25 and the base 10 and ensures the assembly stability between the fifth swing arm 25 and the base 10. In other embodiments, the fifth swing arm 25 may also be rotatable relative to the base 10 through other methods, which are not specifically limited in this application.

[0135] The structure of the sixth rotating portion 25b is compatible with the structure of the fifth mounting slot 21e. The sixth rotating portion 25b is mounted in the fifth mounting slot 21e and can rotate within the fifth mounting slot 21e relative to the first fixed frame 21, thereby achieving a rotational connection between the fifth swing arm 25 and the first fixed frame 21. The sixth rotating portion 25b includes a first rotating shaft 256 and a first sleeve 257. The first rotating shaft 256 is mounted in the fifth mounting slot 21e, and the first sleeve 257 is sleeved on the first rotating shaft 256 and can rotate relative to the first fixed frame 21 about the first rotating shaft 256. In other embodiments, the sixth rotating portion 25b can also achieve a rotational connection with the first fixed frame 21 through other methods, which are not specifically limited in this application.

[0136] The fifth connecting portion 25c is fixedly connected between the seventh rotating cylinder 253 of the fifth rotating portion 25a and the first sleeve 257 of the sixth rotating portion 25b. The seventh rotating cylinder 253, the first sleeve 257, and the fifth connecting portion 25c may be integrally formed. In other embodiments, the seventh rotating cylinder 253, the first sleeve 257, and the fifth connecting portion 25c may not be integrally formed but may be assembled together, which is not a specific limitation in this application.

[0137] See also Figure 7 There are two sixth swing arms 26, each mounted in the two fourth mounting slots 10d of the base 10, and each can rotate relative to the base 10 within the fourth mounting slots 10d. The two sixth swing arms 26 are also mounted in the two seventh mounting slots 22e of the second fixing frame 22, and each can rotate relative to the second fixing frame 22 within the seventh mounting slots 22e. In other embodiments, there may be one, or more than three sixth swing arms 26, and this application does not impose any specific limitation thereto.

[0138] In this embodiment, the two sixth swing arms 26 have the same structure and can both adopt the related designs of the sixth swing arm 26 described below. In other embodiments, the two sixth swing arms 26 can have different structures. For example, the two sixth swing arms 26 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two sixth swing arms 26 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

[0139] The sixth swing arm 26 includes a seventh rotating portion 26a, an eighth rotating portion 26b, and a sixth connecting portion 26c. The eighth rotating portion 26b is spaced apart from the seventh rotating portion 26a. The sixth connecting portion 26c is fixedly connected between the seventh rotating portion 26a and the eighth rotating portion 26b. The structure of the seventh rotating portion 26a is compatible with the structure of the fourth mounting groove 10d. The seventh rotating portion 26a is mounted 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 eighth rotating portion 26b is compatible with the structure of the seventh mounting groove 22e. The eighth rotating portion 26b is mounted in the seventh mounting groove 22e and can rotate relative to the second fixing frame 22 within the seventh mounting groove 22e to achieve a rotational connection between the sixth swing arm 26 and the second fixing 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 refer 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, and will not be repeated here.

[0141] Please also refer to Figure 6 and Figure 12 , Figure 12 yes Figure 5 A schematic structural diagram of the damping assembly 30 and the synchronization assembly 40 in the foldable mechanism 130 is shown.

[0142] The damping assembly 30 is mounted in the fifth assembly slot 10e, the sixth assembly slot 10f, and the seventh assembly slot 10g, and is slidably connected to both the first fixing bracket 21 and the second fixing bracket 22. The damping assembly 30 provides a damping force when the connecting assembly 20 is folded or unfolded relative to the base 10. When a user is using the foldable terminal 1000, such as when the foldable terminal 1000 is in an inwardly folded state, a flattened state, or an outwardly folded state, or when the foldable terminal 1000 switches between the inwardly folded state, the flattened state, and the outwardly folded state, the user can clearly feel the damping force provided by the damping assembly 30, providing a better hand feel and enhancing the user experience.

[0143] In this embodiment, there are two damping assemblies 30, and each damping assembly 30 is installed in a fifth assembly slot 10e, a sixth assembly slot 10f, and a seventh assembly slot 10g. In some other embodiments, there may be one or more than three damping assemblies 30, and this application does not impose specific restrictions on this. Among them, the two damping assemblies 30 can 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 damping assemblies 30, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant design of the damping assembly 30 below, and the detailed structure or position arrangement of the components may be different.

[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 member 35, a second elastic member 36, a seventh swing arm 37, and an eighth swing arm 38. The first damping shaft 31 is mounted in the fifth assembly slot 10e and the seventh assembly slot 10g. The second damping shaft 32 is mounted in the sixth assembly slot 10f and the seventh assembly slot 10g. The axis of the first damping shaft 31 and the axis of the second damping shaft 32 are both parallel to the Y-axis. Exemplarily, the first damping shaft 31 and the second damping shaft 32 are both flat shafts.

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

[0146] The seventh swing arm 37 is mounted in the fifth mounting slot 10e and sleeved around the first damping shaft 31, abutting the first bracket 33 and the second bracket 34. The seventh swing arm 37 is also mounted in the third guide slot 21c of the first fixed frame 21 and can slide relative to the first fixed frame 21 within the third guide slot 21c, thereby achieving a sliding connection between the seventh swing arm 37 and the first fixed frame 21. The abutment between the seventh swing arm 37 and the first bracket 33 and the second bracket 34 can be achieved via a cam.

[0147] The eighth swing arm 38 is mounted in the sixth mounting slot 10f and sleeved around the second damping shaft 32, abutting the first bracket 33 and the second bracket 34. The eighth swing arm 38 is also mounted in the sixth guide slot 22c of the second fixing frame 22 and can slide relative to the second fixing frame 22 within the sixth guide slot 22c, thereby achieving a sliding connection between the eighth swing arm 38 and the second fixing 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.

[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 squeezing the first elastic member 35 and the second elastic member 36. The first elastic member 35 and the second elastic member 36 are squeezed and deformed, applying a reaction force to the first bracket 33, thereby applying a damping force to the seventh swing arm 37 and / or the eighth swing arm 38 to rotate 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 hand feel, thereby improving the user experience. In some other embodiments, the damping assembly 30 can also provide damping force through other structural members, and this application does not impose specific limitations on this.

[0149] The synchronization assembly 40 is mounted in the seventh assembly slot 10g and is sleeved around the first damping shaft 31 and the second damping shaft 32. The synchronization assembly 40 drives the seventh and eighth swing arms 37 and 38 to rotate synchronously relative to the base 10, thereby driving the first and second fixing frames 21 and 22 to rotate synchronously relative to the base 10, and further driving the third and fourth swing arms 23 and 24, as well as the fifth and sixth swing arms 25 and 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 groove 10g, and is sleeved on the first damping shaft 31 and the second damping shaft 32 of a damping component 30. In some other embodiments, there may be one or more than three synchronization components 40, and this application does not impose specific restrictions on this. Among them, the two synchronization components 40 can 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 the components, and the connection relationship between the components and the components outside the components can all refer to the relevant design of the synchronization component 40 below, and the detailed structure or position arrangement of the components may be different.

[0151] The synchronization assembly 40 includes a first gear 41, a second gear 42, a synchronization shaft ( Figure 12 Not shown) and the third gear 44. The first gear 41, the second gear 42, the synchronous shaft and the third gear 44 are all installed in the seventh assembly groove 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 is spaced apart from the first gear 41. There are two synchronous shafts, and the two synchronous shafts are located between the first damping shaft 31 and the second damping shaft 32, and are spaced apart from the first damping shaft 31 and the second damping shaft 32, and are spaced apart from each other. Among them, the axis centers of the two synchronous shafts are parallel to the Y-axis direction. Exemplarily, the two synchronous shafts are circular shafts. There are two third gears 44, and the two third gears 44 are respectively sleeved on the two synchronous shafts and mesh with each 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 gear 44 drives 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 realize the 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 other embodiments, the synchronization assembly 40 may also use other structural components to drive the synchronous rotation of the seventh swing arm 37 and the eighth swing arm 38 relative to the base 10, and this application does not impose specific limitations on this.

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

[0155] The pressure plate assembly 50 is slidably and rotationally 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 rotationally connected to the first fixing frame 21. The second pressure plate 52 is rotationally connected to the second fixing frame 22.

[0156] The first pressure plate 51 includes a first plate 51a, a ninth rotating portion 51b, and a third transmission portion 51c. The ninth rotating portion 51b and the third transmission portion 51c are both fixedly connected to the first plate 51a. The first plate 51a, the ninth rotating portion 51b, and the third transmission portion 51c can be integrally formed. In other embodiments, the first plate 51a, the ninth rotating portion 51b, and the third transmission portion 51c can also be assembled by assembly, which is not specifically limited in this application.

[0157] The length of the first plate 51a is parallel to the Y-axis. 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 each other. The first plate 51a is provided with a third avoidance notch 513 and a first avoidance hole 514. The third avoidance notch 513 and the first avoidance hole 514 both extend through the first plate 51a along the thickness direction of the first plate 51a (the Z-axis direction in the figure).

[0158] Specifically, the third avoidance gap 513 is located on the right side of the first plate body 51a and passes through the right side surface of the first plate body 51a (not marked in the figure). Among them, the third avoidance gap 513 is used to avoid the fifth connecting portion 25c of the fifth swing arm 25. The first avoidance hole 514 is located on the left side of the first plate body 51a and is spaced apart from the third avoidance gap 513. Exemplarily, there are two third avoidance gaps 513 and two first avoidance holes 514. Along the length direction of the first plate body 51a, the two third avoidance gaps 513 are spaced apart, and the two first avoidance holes 514 are located between the two third avoidance gaps 513, and are spaced apart from the two third avoidance gaps 513, and are spaced apart from each other. In some other embodiments, there may be one or more than three third avoidance gaps 513, and / or there may be one or more than three first avoidance holes 514, and this application does not impose any specific restrictions on this.

[0159] The ninth rotating portion 51b is fixedly connected to the bottom surface 512 of the first plate body 51a and is located on the left side of the first plate body 51a and is spaced apart from the first avoidance hole 514. The structure of the ninth rotating portion 51b is compatible with the structure of the first rotation groove 21g of the first fixed frame 21. The ninth rotating portion 51b is mounted in the first rotation groove 21g of the first fixed frame 21 and can rotate relative to the first fixed frame 21 within the first rotation groove 21g to achieve a rotational connection between the first pressure plate 51 and the first fixed frame 21. Exemplarily, there are eight ninth rotating portions 51b. Along the length of the first plate body 51a, the eight ninth rotating portions 51b are arranged in sequence and spaced apart, and are respectively mounted in the eight first rotation grooves 21g to ensure stable assembly between the first pressure plate 51 and the first fixed frame 21. In other embodiments, there may be fewer than seven or more than nine ninth rotating portions 51b, and this application does not impose any specific limitation on this.

[0160] The third transmission part 51c is fixedly connected to the bottom surface of the first plate body 51a, and is located on the left side of the first plate body 51a, and is spaced apart from the ninth rotating part 51b. Among them, the third transmission part 51c can also extend into the first avoidance hole 514 to reduce the thickness space occupied by the first pressure plate 51, thereby reducing the space occupied by the foldable mechanism 130, which helps to achieve a miniaturized design of the foldable terminal 1000. Specifically, the third transmission part 51c is in the shape of an arc strip, and the axis of the third transmission part 51c is parallel to the Y-axis direction. The third transmission part 51c is provided with a plurality of third teeth (not shown in the figure), and the plurality of third teeth are all provided on the surface of the third transmission part 51c away from the first plate body 51a. Around the direction of the rotation center of the third transmission part 51c relative to the first fixed frame 21, the plurality of second teeth are arranged in sequence. Exemplarily, the third transmission part 51c is in the shape of a "gear".

[0161] Illustratively, there are two third transmission parts 51c, which are spaced apart in sequence along the length of the first plate 51a and extend into the two first avoidance holes 514. In other embodiments, there may be one or more than three third transmission parts 51c, and this application does not impose specific limitations on this.

[0162] The second pressure plate 52 includes a second plate 52a, a tenth rotating portion 52b, and a fourth transmission portion 52c. The tenth rotating portion 52b and the fourth transmission portion 52c are both fixedly connected to the second plate 52a. The second plate 52a, the tenth rotating portion 52b, and the fourth transmission portion 52c can be integrally formed. It should be noted that the structures of the second plate 52a, the tenth rotating portion 52b, and the fourth transmission portion 52c of the second pressure plate 52 can be referenced above with respect to the description of the first plate 51a, the ninth rotating portion 51b, and the third transmission portion 51c, respectively, and are not further elaborated here.

[0163] The second pressure plate 52 differs from the first pressure plate 51 in that the second plate 52a is provided with 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 52a and extends through the left side of the second plate 52a (not shown). The fourth clearance notch 523 is used to clear the sixth connecting portion 26c of the sixth swing arm 26. The second clearance hole 524 is located on the right side of the second plate 52a. The tenth rotating portion 52b is located on the right side of the second plate 52a. The tenth rotating portion 52b is mounted in the second rotation groove 22g of the second fixed frame 22 and can slide and rotate relative to the second fixed frame 22 within the second rotation groove 22g, thereby achieving a sliding and rotational connection between the second pressure plate 52 and the second fixed frame 22. The fourth transmission portion 52c is located on the right side of the second plate 52a and extends into the second clearance hole 524. The fourth transmission portion 52c is provided with a plurality of fourth teeth (not shown).

[0164] Please also refer to Figure 5 The transmission assembly 60 is mounted 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 abuts 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 mounted on the first fixed frame 21. Specifically, the first transmission member 61 is mounted in the fourth mounting slot 21d and abuts between the first transmission portion 23c of the third swing arm 23 and the third transmission portion 51c of the first pressure plate 51. The first transmission member 61 engages with the first tooth 234 of the first transmission portion 23c and the third tooth 234 of the third transmission portion 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. Illustratively, there are two first transmission members 61, each of which is mounted in one of the fourth mounting slots 21d and abuts between a first transmission portion 23c of a third swing arm 23 and a third transmission portion 51c of the first pressure plate 51. In other embodiments, there may be one or more than three first transmission members 61, and this application does not impose any specific limitation thereto.

[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 slot 22d and abuts between the second transmission portion 24c of the fourth swing arm 24 and the fourth transmission portion 52c of the second pressure plate 52. The second transmission member 62 engages with the second tooth of the second transmission portion 24c and the fourth tooth of the fourth transmission portion 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 of which is mounted in a sixth mounting slot 22d and connected between the second transmission portion 24c of a fourth swing arm 24 and a fourth transmission portion 52c of the second pressure plate 52. In other embodiments, there may be one or more than three second transmission members 62, and this application does not impose specific limitations on this.

[0166] Please also refer to Figure 14 , Figure 14 yes Figure 5 A schematic structural diagram of the stop assembly 70 in the foldable mechanism 130 is shown.

[0167] The stopper assembly 70 is mounted in the first, second, and third mounting slots 10h, 10i, and 10j, and is slidably connected to both the first and second mounting brackets 21, 22. When the foldable mechanism 130 is in the flattened state, the stopper assembly 70 enhances the flattening retention force of the foldable mechanism 130, ensuring that the foldable mechanism 130 remains flat. This effectively supports the foldable portion 230 of the display module 200, preventing the display module 200 from sinking and ensuring the reliability of the foldable terminal 1000.

[0168] In this embodiment, there are two stopper assemblies 70, each of which is installed in a first mounting groove 10h, a second mounting groove 10i, and a third mounting groove 10j. In other embodiments, there may be one or more than three stopper assemblies 70, and this application does not impose specific restrictions on this. The two stopper assemblies 70 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 stopper assemblies 70, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant design of the stopper assembly 70 below, and the detailed structure or position arrangement of the components may be different.

[0169] The stop assembly 70 includes an elastic stop member 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 member 71 is mounted in the first mounting slot 10h and is elastically deformable. The first stop shaft 72 is mounted in the second mounting slot 10i. The second stop shaft 73 is mounted in the third mounting slot 10j. The first stop shaft 72 and the second stop shaft 73 are located on opposite sides of the elastic stop member 71 and are spaced apart from the elastic stop member 71. The axes of the first stop shaft 72 and the second stop shaft 73 are both parallel to the Y-axis. Exemplarily, the first stop shaft 72 and the second stop shaft 73 are flat shafts. The first swing arm 74 is mounted in the second mounting slot 10i, sleeved around the first stop shaft 72, and slidably connected to the first fixed frame 21. The first swing arm 74 is rotationally connected to the base 10 via the first stop shaft 72. The second swing arm 75 is installed in the third installation groove 10j, and is sleeved on the second stop shaft 73 and 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, and the first swing arm 74 may be rotated to connect to the base 10 in other ways, and / or the stop assembly 70 may not include the second stop shaft 73, and the second swing arm 75 may be rotated to connect to the base 10 in other ways. This application does not impose any specific restrictions.

[0171] Please also refer to Figure 15 and Figure 16 , Figure 15 yes Figure 14 The schematic structural diagram of the elastic stopper 71 in the stopper assembly 70 is shown. Figure 16 yes Figure 15 The cross-sectional structure diagram of the elastic stopper 71 is shown after being cut along II. Wherein, when cutting along II, it means cutting along the plane where the II line is located, and other similar descriptions in this article can be understood in the same way.

[0172] The structure of the elastic stopper 71 is compatible with the structure of the first mounting slot 10h. The elastic stopper 71 is mounted in the first mounting slot 10h and is elastically deformable along its width (the X-axis in the figure). The elastic stopper 71 is provided with a first retaining portion 711 and a second retaining portion 712. The first retaining portion 711 and the second retaining portion 712 are located on opposite sides of the elastic stopper 71 along its width.

[0173] The first retaining portion 711 is disposed on the surface of the elastic stopper 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 stopper 71 facing the second mounting slot 10i in the direction toward the second mounting slot 10i (negative direction of the X-axis as shown). 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 stopper 71). Along the thickness direction of the first retaining portion 711 (Z-axis direction as shown), the two first side surfaces 714 are disposed opposite each other and are located on opposite sides of the first top surface 713. Each first mating surface 715 is connected between 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 toward the elastic stopper 71. Exemplarily, the two first mating surfaces 715 are both inclined surfaces, and the angle θ1 between each first mating surface 715 and the first top surface 713 is an obtuse angle.

[0174] The second retaining portion 712 is disposed on the surface of the elastic stopper 71 facing the second swing arm 75. In this embodiment, the second retaining portion 712 is a protruding pin. The second retaining portion 712 protrudes from the elastic stopper 71 toward the third mounting slot 10j (in the positive direction of the X-axis as shown). The second retaining 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 retaining portion 712 facing the second swing arm 75 (i.e., the surface away from the elastic stopper 71). Along the thickness direction of the second retaining portion 712 (in the Z-axis direction as shown), the two second side surfaces 717 are disposed opposite each other and are located on opposite sides of the second top surface 716. Each second mating surface 718 is connected between the second top surface 716 and one of the second side surfaces 717. The distance between the two second mating surfaces 718 gradually increases along the direction from the second top surface 716 toward the elastic stopper 71. Exemplarily, the two second mating surfaces 718 are both inclined surfaces, and the angle θ2 between each second mating surface 718 and the second top surface 716 is an obtuse angle.

[0175] In one embodiment, the elastic stopper 71 includes a first leaf spring 71a and a second leaf spring 71b. The first leaf spring 71a and the second leaf spring 71b are both mounted in the first mounting groove 10h. Along the width direction of the elastic stopper 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 Y-axis direction shown in the figure), the two first fixing portions 71e are spaced apart and arranged oppositely. 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 contact 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 and Y-axis directions 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 is away from the second leaf spring 71b and is spaced apart from both of the two first fixing portions 71e. Specifically, the second leaf spring portion 71d is fitted to the surface of the first elastic portion 71f that is 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 is 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 7 by bonding or other means, 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 of the elastic stopper 71, the third leaf spring portion 71g abuts against the first leaf spring portion 71c and is disposed opposite 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 of 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 of the first leaf spring 71a, respectively, and will not be described again here.

[0181] See also Figure 14 The first swing arm 74 is mounted in the second mounting slot 10i and is rotatable relative to the base within the second mounting slot 10i. The first swing arm 74 is also mounted in the first slide slot 21a of the first fixed frame 21 and is slidable relative to the first fixed frame 21 within the first slide slot 21a. Furthermore, the first swing arm 74 is rotatable relative to the first fixed frame 21 within the first slide slot 21a, thereby achieving a rotational connection between the first swing arm 74 and the first fixed frame 21. This improves the flexibility of the relative movement between the first swing arm 74 and the first fixed frame 21 and ensures smooth rotation of the foldable mechanism 130.

[0182] Please also refer to Figure 17 and Figure 18 , Figure 17 yes Figure 14 The schematic structural diagram of the first swing arm 74 in the stop assembly 70 is shown. Figure 18 yes Figure 17 Schematic diagram of the cross-sectional structure of the first swing arm 74 is shown.

[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 is spaced apart from the first rotating portion 74a and is fixedly connected via the first connecting portion 74c. In other embodiments, the first sliding portion 74b and the first rotating portion 74a may be fixedly connected via other means, which is not specifically limited in this application.

[0184] The first rotating portion 74a is rotatably connected to the base 10 and is located on the side of the elastic stopper 71 near the first clamping portion 711. Specifically, the first rotating portion 74a is installed in the second mounting groove 10i and is sleeved on the first stop shaft 72 to rotate the connecting base 10 through the first stop shaft 72. The first rotating portion 74a includes a first circumferential side surface 741 and two first end surfaces 742. The first circumferential side surface 741 is the first circumferential side surface 741 of the first rotating portion 74a that faces away from the first stop shaft 72. The first circumferential side surface 741 is arranged around the first stop shaft 72. Along the length direction of the first rotating portion 74a (the Y-axis direction in the figure), the two first end surfaces 742 are arranged opposite to each other and connected to opposite sides of the first circumferential side surface 741.

[0185] The first rotating portion 74a is provided with a third retaining portion 743 and a fifth retaining portion 744, both of which are disposed on the first peripheral side surface 741. The structures of the third retaining portion 743 and the fifth retaining portion 744 are compatible with the structures of the first retaining portion 711. In this embodiment, the third retaining portion 743 and the fifth retaining portion 744 are both grooves.

[0186] The third retaining portion 743 is located between the two first end surfaces 742 and spaced apart from both first end surfaces 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 surface 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 walls 746. Around the circumference of the first rotating portion 74a, the two first groove side walls 746 are located on opposite sides of the first groove bottom wall surface 745 and are connected to the first groove bottom wall surface 745. The distance between the two first groove side walls 746 gradually increases as they move from the first groove bottom wall surface 745 toward the first circumferential side surface 741. Both first groove side walls 746 are inclined surfaces, and the 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 may be equal to θ1.

[0187] The fifth holding portion 744 also passes through the two first end surfaces 742. There are multiple fifth holding portions 744, and the multiple fifth holding portions 744 are arranged in sequence in the direction around the first stop shaft 72. At this time, the third holding portion 743 is located between two adjacent fifth holding portions 744 and is connected to the two fifth holding portions 744. For example, the first rotating portion 74a can be a "gear" type. 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 convex pins. This application does not impose any specific restrictions on this.

[0188] The structure of the first sliding portion 74b is compatible with the structure of the first chute 21a. The first sliding portion 74b is mounted in the first chute 21a and can slide within the first chute 21a relative to the first fixed frame 21, thereby achieving a sliding connection between the first swing arm 74 and the first fixed frame 21. Furthermore, the first sliding portion 74b can rotate within the first chute 21a relative to the first fixed frame 21, thereby achieving a rotational connection between the first swing arm 74 and the first fixed frame 21. This improves the flexibility of the relative movement between the first swing arm 74 and the first fixed frame 21, ensuring smooth rotation of the foldable mechanism 130.

[0189] See also Figure 14 The second swing arm 75 is mounted in the third mounting slot 10j and is rotatable relative to the base within the third mounting slot 10j. The second swing arm 75 is also mounted in the fourth slide slot 22a of the second fixing frame 22 and is slidable relative to the second fixing frame 22 within the fourth slide slot 22a. Furthermore, the second swing arm 75 is rotatable relative to the second fixing frame 22 within the fourth slide slot 22a, thereby achieving a rotational connection between the second swing arm 75 and the second fixing frame 22. This improves the flexibility of the relative movement between the second swing arm 75 and the second fixing frame 22 and ensures 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 is spaced apart from the second rotating portion 75a and is fixedly connected via the second connecting portion 75c. In other embodiments, the second sliding portion 75b and the second rotating portion 75a may be fixedly connected via other means, which is not specifically limited in this application.

[0191] The second rotating portion 75a is rotationally connected to the base 10 and is located on the side of the elastic stopper 71 near the second clamping portion 712. Specifically, the second rotating portion 75a is mounted in the third mounting slot 10j and sleeved around the second stopper shaft 73, allowing rotational connection to the base 10 via the second stopper shaft 73. The second rotating portion 75a is provided with a fourth clamping portion 753 and a sixth clamping portion 754. The structure of the second sliding portion 75b is compatible with the structure of the fourth chute 22a. The second sliding portion 75b is mounted in the fourth chute 22a and can slide relative to the second fixed frame 22 within the fourth chute 22a to achieve a sliding connection between the second swing arm 75 and the second fixed frame 22. Furthermore, the second sliding portion 75b can also rotate relative to the second fixed frame 22 within the fourth chute 22a to achieve a rotational connection between the second swing arm 75 and the second fixed frame 22. This improves the flexibility of the relative movement between the second swing arm 75 and the second fixed frame 22, ensuring 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 refer 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] See also Figure 5 The foldable mechanism 130 further includes a cover plate 80, which is mounted on the base 10 and covers at least a portion 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 the normal operation of the stop assembly 70. There are two cover plates 80. The two cover plates 80 are spaced apart along the length of the base 10 and each covers a stop assembly 70. In other embodiments, there may be one or more than three cover plates 80, and this application does not impose specific limitations on this. The two cover plates 80 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 cover plates 80, the connection relationship between the components, and the connection relationship between the components and components outside the assembly can all refer to the relevant design of the cover plate 80 below, and the detailed structure or position arrangement of the components may differ.

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

[0195] In this embodiment, the cover plate 80 extends along the Y-axis. 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. The top surface 801 of the cover plate 80 can be flush with the top surface 101 of the base 10, thereby jointly supporting the foldable portion 230 of the display module 200 with the top surface 101 of the base 10.

[0196] The cover plate 80 is provided with a second fixing hole 803, a first avoidance notch 804 and a second avoidance notch 805. The second fixing hole 803, the first avoidance notch 804 and the second avoidance notch 805 all penetrate the top surface 801 and the bottom surface 802 of the cover plate 80 along the thickness direction of the cover plate 80 (Z-axis direction in the figure). The second fixing hole 803 is connected to the first fixing hole 10k of the base 10. Exemplarily, there are two second fixing holes 803, and the two second fixing holes 803 are arranged at intervals along the length direction of the cover plate 80, and are respectively connected to the two first fixing holes 10k. In some other embodiments, there may be one or more than three second fixing holes 803, and this application does not impose specific restrictions on this.

[0197] The first avoidance notch 804 and the second avoidance 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 avoidance notch 804 is located on the left side of the cover plate 80 and penetrates the left side surface of the cover plate 80 (not marked in the figure) to avoid the first rotating portion 74a and the first connecting portion 74c of the first swing arm 74, thereby preventing interference between the cover plate 80 and the first swing arm 74, and ensuring smooth rotation of the foldable mechanism 130. The second avoidance notch 805 is located on the right side of the cover plate 80 and penetrates the right side surface of the cover plate 80 (not marked in the figure) to avoid the second rotating portion 75a and the second connecting portion 75c of the second swing arm 75, thereby preventing interference between the cover plate 80 and the second swing arm 75, and ensuring smooth rotation of the foldable mechanism 130.

[0198] See also Figure 5 The foldable mechanism 130 further includes a fixing member 90, which is provided 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 mount the cover plate 80 on the base 10. The fixing member 90 can be a component that can play a fixing role, such as a screw or a bolt. Exemplarily, there are four fixing members 90, each of which is provided through one second fixing hole 803 and one first fixing hole 10k. In other embodiments, there can be less than three or more than five fixing members 90, and this application does not impose specific restrictions on this.

[0199] See also Figure 20 and Figure 21 , Figure 20 yes Figure 1 The schematic structural diagram of the foldable mechanism 130 of the foldable device 100 in the foldable terminal 1000 is shown. Figure 21 yes Figure 20 The foldable mechanism 130 is shown as a schematic cross-sectional structure diagram after being cut along II-II.

[0200] When the foldable mechanism 130 is in the inward folded state, the first fixing frame 21, the second fixing 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 and arranged opposite to 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 (that is, the top surface 511 of the first plate body 51a) is intersected with the top surface 211 of the first fixing frame 21, and the bottom surface 512 of the first plate body 51a in the first pressure plate 51 contacts the first avoidance surface 213 of the first fixing frame 21. The top surface of the second pressure plate 52 (that is, the top surface 521 of the second plate body 52a) is intersected with the top surface 221 of the second fixing frame 22, and the bottom surface 522 of the second plate body 52a in the second pressure plate 52 contacts the second avoidance surface 223 of the second fixing frame 22. Illustratively, the bottom surface 512 of the first plate 51a of the first pressing plate 51 fits against the first avoidance surface 213 of the first fixing frame 21 , and the bottom surface 522 of the second plate 52a of the second pressing plate 52 fits against the second avoidance 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 an avoidance space 1301. The cross-section of the avoidance space 1301 is in the shape of a "tear drop" to avoid the foldable part 230 of the display module 200, avoid interference between the foldable mechanism 130 and the foldable part 230, and prevent the foldable mechanism 130 from damaging the foldable part 230, thereby ensuring the reliability of the foldable terminal 1000.

[0202] In addition, the seventh swing arm 37 and the eighth swing arm 38 are folded relative to each other, the first swing arm 74 and the second swing arm 75 are folded relative to each other, the third clamping portion 743 and the fifth clamping portion 744 of the first swing arm 74 are both spaced apart from the first clamping portion 711 of the elastic stopper 71, and the fourth clamping portion 753 and the sixth clamping portion 754 of the second swing arm 75 are both spaced apart from the second clamping portion 712 of the elastic stopper 71. In other embodiments, when the foldable mechanism 130 is in the inward folded state, the fifth clamping portion 744 of the first swing arm 74 can be mutually clamped with the first clamping portion 711 of the elastic stopper 71, and the sixth clamping portion 754 of the second swing arm 75 can be mutually clamped with the second clamping portion 712 of the elastic stopper 71, thereby ensuring the inward folding retention force of the foldable mechanism 130.

[0203] See also Figure 22 and Figure 23 , Figure 22 yes Figure 3 The schematic structural diagram of the foldable mechanism 130 of the foldable device 100 in the foldable terminal 1000 is shown. Figure 23 yes Figure 22 The foldable mechanism 130 is shown as a schematic cross-sectional structure diagram after being cut along III-III.

[0204] When the foldable mechanism 130 is in the outward folded state, the first fixing frame 21 and the second fixing frame 22 are both located on the bottom side of the base 10, and are spaced apart and arranged back to back. The third swing arm 23 and the fourth swing arm 24 are folded back to back, and the fifth swing arm 25 and the sixth swing arm 26 are folded back to back. The top surface 511 of the first plate body 51a in the first pressure plate 51 is flush with the top surface 211 of the first fixing frame 21, and the top surface 521 of the second plate body 52a in the second pressure plate 52 is flush with the top surface 221 of the second fixing 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 80 are flush, and jointly support the foldable part 230 of the display module 200 to ensure that the foldable mechanism 130 effectively supports the display module 200, avoids the problem of sinking of the display module 200, avoids the problem of low strength reliability of the display module 200, and ensures the reliability of use of the foldable terminal 1000.

[0205] At this time, the bottom surface 512 of the first plate 51a of the first pressure plate 51 is spaced apart from the first avoidance surface 213 of the first fixing frame 21, and the bottom surface 522 of the second plate 52a of the second pressure plate 52 is spaced apart from the second avoidance surface 223 of the second fixing frame 22. The angle between the bottom surface 512 of the first plate 51a and the first avoidance surface 213 is a first angle θ4, and the angle between the bottom surface 522 of the second plate 52a and the second avoidance surface 223 is a first angle 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 are folded back to back, the first swing arm 74 and the second swing arm 75 are folded back to back, the third retaining portion 743 of the first swing arm 74 is spaced apart from the first retaining portion 711 of the elastic stopper 71, and the fourth retaining portion 753 of the second swing arm 75 is spaced apart from the second retaining portion 712 of the elastic stopper 71. Furthermore, the fifth retaining portion 744 of the first swing arm 74 is mutually retained by the first retaining portion 711 of the elastic stopper 71, and the sixth retaining portion 754 of the second swing arm 75 is mutually retained by the second retaining portion 712 of the elastic stopper 71, thereby ensuring the inward folding retention force of the foldable mechanism 130. In some other embodiments, when the foldable mechanism 130 is in the outward folded state, the fifth clamping portion 744 of the first swing arm 74 may also be spaced apart from the first clamping portion 711 of the elastic stop member 71, and / or the sixth clamping portion 754 of the second swing arm 75 may be spaced apart from the second clamping portion 712 of the elastic stop member 71. This application does not impose any specific restrictions on this.

[0207] See also Figure 4 and Figure 24 , Figure 24yes Figure 4 The foldable mechanism 130 is shown as a schematic cross-sectional structure diagram after being cut along IV-IV.

[0208] When the foldable mechanism 130 is in the flattened state, the first fixing frame 21 and the second fixing frame 22 are respectively located on opposite sides of the base 10, the third swing arm 23 and the fourth swing arm 24 are relatively flattened, the fifth swing arm 25 and the sixth swing arm 26 are relatively flattened, the top surface 511 of the first plate body 51a in the first pressure plate 51 is flush with the top surface 211 of the first fixing frame 21, and the top surface 521 of the second plate body 52a in the second pressure plate 52 is flush with the top surface 221 of the second fixing frame 22. Among them, 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 to ensure that the foldable mechanism 130 effectively supports the display module 200, avoids the problem of sinking of the display module 200, avoids the problem of flatness and light and shadow difference, low strength reliability and other problems of the display module 200, and ensures the reliability of use of the foldable terminal 1000.

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

[0210] In addition, the seventh and eighth swing arms 37 and 38 are relatively flattened, the first and second swing arms 74 and 75 are relatively flattened, the third retaining portion 743 of the first swing arm 74 is mutually engaged with the first retaining portion 711 of the elastic stopper 71, and the fourth retaining portion 753 of the second swing arm 75 is mutually engaged with the second retaining portion 712 of the elastic stopper 71, thereby limiting the rotation of the first and second swing arms 74 and 75 relative to the base 10, thereby achieving the flattening stop function of the stop assembly 70. The stop assembly 70 can enhance the flattening retention force of the foldable mechanism 130, and the foldable mechanism 130 can effectively support the foldable portion 230 of the display module 200, preventing the display module 200 from sinking and ensuring the reliability of the foldable terminal 1000. At this time, the fifth clamping portion 744 of the first swing arm 74 is spaced apart from the first clamping portion 711 of the elastic stopper 71 , and the sixth clamping portion 754 of the second swing arm 75 is spaced apart from the second clamping portion 712 of the elastic stopper 71 .

[0211] Among them, the two first groove sidewall surfaces 746 (such as Figure 18) are respectively connected to the two first matching surfaces 715 of the first holding portion 711 (as shown Figure 16 The two second groove sidewall surfaces of the fourth holding portion 753 are respectively in contact with the two second matching surfaces 725 (as shown in FIG. Figure 16 Illustratively, the two first groove sidewalls 746 are respectively in contact with the two first mating surfaces 715, and the two second groove sidewalls of the fourth clamping portion 753 are respectively in contact with the two second mating surfaces 718, thereby ensuring the clamping force between the third clamping portion 743 and the first clamping portion 711, and between the fourth clamping portion 753 and the second clamping portion 712, thereby ensuring the flattening retention force of the foldable mechanism 130.

[0212] It can be understood that 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 side walls 746 can not only guide the first clamping portion 711 (protruding pin) into the third clamping portion 743 (groove), but also guide the first clamping portion 711 (protruding pin) to disengage from the third clamping portion 743 (groove); the two second mating surfaces 725 and the two second groove side walls of the fourth clamping portion 753 can not only guide the second clamping portion 712 (protruding pin) into the fourth clamping portion 753 (groove), but also guide the second clamping portion 712 (protruding pin) to disengage from the fourth clamping portion 753 (groove), so as to reduce the sense of jamming during the rotation of the first swing arm 74 and the second swing arm 75 relative to the base 10 and improve the smoothness of rotation of the foldable mechanism.

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

[0214] During the process of switching the foldable mechanism 130 from the inwardly folded or outwardly folded state to the flattened state, the elastic stopper 71 can be elastically deformed along the X-axis direction under the action of the first swing arm 74 and the second swing arm 75. When the first clamping portion 711 is pushed into the third clamping portion 743 and mutually engaged with the third clamping portion 743 under the elastic restoring force of the elastic stopper 71, and the second clamping portion 712 is pushed into the fourth clamping portion 753 and mutually engaged with the fourth clamping portion 753 under the elastic restoring force of the elastic stopper 71, the foldable mechanism 130 is in the flattened state. At this time, the first swing arm 74 and the second swing arm 75 cannot rotate relative to the base 10, and the stopper assembly 70 achieves its stopping function.

[0215] When the foldable mechanism 130 switches from the flattened state to the inward folding state or the outward folding state, it is necessary to overcome the limiting resistance between the third clamping portion 743 and the first clamping portion 711, and the fourth clamping portion 753 and the second clamping portion 712, so that the elastic stopper 71 is elastically deformed along the X-axis direction, so that the first swing arm 74 and the second swing arm 75 can rotate relative to the base 10, and then the foldable mechanism 130 can rotate normally.

[0216] In this embodiment, when the foldable mechanism 130 is in the hovering state, the third latching portion 743 of the first swing arm 74 is spaced apart from the first latching portion 711 of the elastic stopper 71, and the fourth latching portion 753 of the second swing arm 75 is spaced apart from the second latching portion 712 of the elastic stopper 71. Furthermore, the fifth latching portion 744 of the first swing arm 74 is mutually engaged with the first latching portion 711 of the elastic stopper 71, and the sixth latching portion 754 of the second swing arm 75 is mutually engaged with the second latching portion 712 of the elastic stopper 71, thereby limiting the rotation of the first and second swing arms 74, 75 relative to the base 10, thereby maintaining the foldable mechanism 130 in the hovering 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-folded state and the flattened state. In this case, the deployment 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 it is in an intermediate state between the flattened state and the outward-folded state. In this case, the deployment 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 deployment 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 clamping portion 744 of the first swing arm 74 and the sixth clamping portion 754 of the second swing arm 75 can not only provide the foldable mechanism 130 with torque in addition to the damping component 30, thereby improving the user feel of the foldable terminal 1000, but can also cooperate with the first clamping portion 711 and the second clamping portion 712 respectively to realize the foldable mechanism 130 to hover at multiple stop positions, thereby improving the user experience of the foldable terminal 1000.

[0219] It is understood that, based on the desired hovering angle of the foldable mechanism 130, the arrangement of the fifth clamping portion 744 on the first swing arm 74 and the arrangement of the sixth clamping portion 754 on the second swing arm 75 can be adaptively adjusted. Furthermore, based on the desired hovering damping force of the foldable mechanism 130, the structure of the fifth clamping portion 744 and the structure of the sixth clamping portion 754 can be adaptively adjusted. For example, the shape and depth of the groove can be adaptively adjusted, and this application does not impose specific limitations on this.

[0220] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable mechanism, characterized in that: The cam is configured to move the spring member to a position adjacent to the support frame, the spring member being configured to move the spring member to a position adjacent to the support frame, the spring member being configured to move the spring member to a position adjacent to the support frame. When the foldable mechanism is in a flattened state, the first holding portion and the third holding portion are held in mutual engagement, and the second holding portion and the fourth holding portion are held in mutual engagement.

2. The foldable mechanism according to claim 1, wherein: The first rotating part is further provided with a fifth clamping part, and the fifth clamping part is provided on the circumference of the first rotating part; When the foldable mechanism is in a hovering state, the first clamping portion is spaced apart from the third clamping portion and is clamped with the fifth clamping portion. 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.

3. The foldable mechanism according to claim 2, wherein: There are a plurality of the fifth holding portions, which are arranged at intervals in the circumferential direction around the first rotating portion; When the foldable mechanism is in the suspended state, the first holding portion and one of the fifth holding portions are held in mutual engagement.

4. The foldable mechanism according to any one of claims 1 to 3, characterized in that: The first holding portion is a convex pin, which is provided on the surface of the elastic stopper facing the first rotating portion; the third holding portion is a groove, and the opening of the groove is located on the circumference of the first rotating portion; Alternatively, the first holding portion is a groove, the opening of the groove is located on the surface of the elastic stopper facing the first rotating portion, and the third holding portion is a convex pin, which is provided on the circumference of the first rotating portion; When the foldable mechanism is in a flattened state, the protruding pin and the groove are engaged with each other.

5. The foldable mechanism according to claim 4, wherein: The groove includes a first groove bottom wall and two first groove side walls, the two first groove side walls are respectively located on opposite sides of the first groove bottom wall and connected to the first groove bottom wall, and the distance between the two first groove side walls gradually increases along the direction of the first groove bottom wall facing the opening of the groove.

6. The foldable mechanism according to claim 4 or 5, characterized in that: The convex pin includes a first top surface, two first side surfaces and two first mating surfaces, the first top surface is the surface of the convex pin facing the groove, the two first side surfaces are respectively 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, and the distance between the two first mating surfaces gradually increases along the direction from the first top surface to the first side surface.

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

8. The foldable mechanism according to claim 7, wherein: The base is provided with a first mounting groove, the first leaf spring portion is installed in the first mounting groove, the first leaf spring portion includes two first fixing parts and a first elastic part, along the length direction of the base, the two first fixing parts are spaced apart and arranged opposite to each other, and both abut against the groove wall surface of the first mounting groove, the first elastic part is located on the same side of the two first fixing parts, and is fixedly connected between the two first fixing parts, and the second leaf spring portion is provided on the surface of the first elastic part facing the first fixing part.

9. The foldable mechanism according to any one of claims 1 to 8, characterized in that: The foldable mechanism further includes a cover plate, which is mounted on the base and covers at least a portion of the elastic stopper.

10. The foldable mechanism according to claim 9, wherein: The cover plate is provided with a first avoidance gap and a second avoidance gap, both of which penetrate the cover plate along the thickness direction of the cover plate. The first avoidance gap avoids the first swing arm, and the second avoidance gap avoids the second swing arm.

11. The foldable mechanism according to any one of claims 1 to 10, characterized in that: The foldable mechanism further includes a first fixing frame, a second fixing frame, a first pressing plate, and a second pressing plate, wherein the first fixing frame is slidably connected to the first swing arm, the second fixing frame is slidably connected to the second swing arm, the first pressing plate is rotatably connected to the first fixing frame, and the second pressing plate is rotatably connected to the second fixing 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.

12. The foldable mechanism according to claim 11, wherein: 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, and the first fixing frame, the first pressure plate, the base, the second fixing frame and the second pressure plate enclose an avoidance space, and the cross-section of the avoidance space is in the shape of a water droplet.

13. The foldable mechanism according to claim 11 or 12, 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, 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, and the top surface of the base, the top surface of the first fixing frame, the top surface of the first pressure plate, the top surface of the second fixing frame and the top surface of the second pressure plate are flush.

14. A foldable terminal, characterized in that: The invention comprises a first shell, a second shell and a foldable mechanism according to any one of claims 1 to 13, wherein the foldable mechanism is connected between the first shell and the second shell.

15. The foldable terminal according to claim 14, wherein: The foldable terminal also includes a display module, which includes a first display part, a second display part and a foldable part. The first display part is installed on the first shell, the second display part is installed on the second shell, and the foldable part is connected between the first display part and the second display part, and is arranged opposite to the foldable mechanism.

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