Foldable mechanism and foldable terminal

Abstract

The invention provides a foldable mechanism and a foldable terminal, a first transmission part is designed in the foldable mechanism, and when a first swing arm slides relative to a first fixing frame, the first swing arm can serve as a main drive so as to drive a first pressing plate to rotate relative to the first fixing frame through the first transmission part. When the foldable mechanism is in the flattened state, the first fixing frame and the first pressing plate can effectively support the display module, the problems that the display module sinks and sinks and the strength reliability is low are solved, the touch control and use experience of the display module can be improved, and the user experience is improved. And the use reliability of the foldable terminal 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 folding mechanism is flattened, a gap forms between the folding mechanism's mounting bracket and the display module, preventing effective support for the display module. This can cause the display module to sink, reducing the reliability of the foldable device. Summary of the Invention

[0003] The present application provides a foldable mechanism and a foldable terminal, which are used to effectively support a 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, a first fixing frame, a first swing arm, a first transmission member, and a first pressure plate. The first fixing frame is located on one side of the base and includes a first avoidance surface. The first avoidance surface is located on a top surface of the first fixing frame facing the base and is connected to the top surface of the first pressure plate.

[0005] The first swing arm includes a first rotating portion, a first sliding portion, and a first transmission portion. The first rotating portion is rotatably connected to the base. The first sliding portion is fixedly connected to the first rotating portion and slidably connected to the first fixed frame. The first transmission portion is fixedly connected to the first sliding portion.

[0006] The first pressing plate is rotatably connected to the first fixing frame. The first pressing plate includes a first plate body and a second transmission part. The second transmission part is fixedly connected to the first plate body.

[0007] The first transmission member is mounted on the first fixing frame, is rotatable relative to the first fixing frame, and is in contact between the first transmission portion and the second transmission portion.

[0008] When the foldable mechanism is in an inwardly folded state, the first fixing frame is located on the top side of the base, the top surface of the first plate intersects with the top surface of the first fixing frame, and the bottom surface of the first plate contacts the first avoidance surface;

[0009] When the foldable mechanism is in a flattened state, the top surface of the first plate body is flush with the top surface of the first fixing frame, and the bottom surface of the first plate body is spaced apart from and opposite to the first avoidance surface.

[0010] During the process of switching the foldable mechanism from the inwardly folded state to the flattened state, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first transmission member to rotate relative to the first fixed frame, the first transmission member drives the second transmission portion to rotate relative to the first fixed frame, and the second transmission portion drives the first plate to rotate relative to the first fixed frame.

[0011] The foldable mechanism described in this application incorporates a first transmission member. When the first swing arm slides relative to the first fixed frame, the first swing arm serves as the primary drive, driving the first pressure plate to rotate relative to the first fixed frame via the first transmission member. When the foldable mechanism is in the flattened state, the first fixed frame and the first pressure plate effectively support the display module, preventing it from sinking and reducing its strength and reliability. This helps improve the touch and user experience of the display module and ensures the reliability of the foldable terminal.

[0012] In one embodiment, when the foldable mechanism is in an outwardly folded state, the first fixing frame is located on the bottom side of the base, the top surface of the first plate body is flush with the top surface of the first fixing frame, and the bottom surface of the first plate body is spaced apart from and opposite to the first avoidance surface.

[0013] When the foldable mechanism is in the outward folded state, the first fixing frame and the first pressure plate can effectively support the display module, avoiding the display module from sinking and the problem of low strength and reliability, which helps to improve the touch and usage experience of the display module and ensure the reliability of the foldable terminal.

[0014] In one embodiment, when the foldable mechanism switches between the flattened state and the outwardly folded state, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, and the second transmission portion and the first plate are fixed relative to the first fixed frame.

[0015] When the foldable mechanism is in the outward folded state, the first fixing frame and the first pressure plate can still effectively support the display module, avoiding the display module from sinking and the problem of low strength and reliability, which helps to improve the touch and usage experience of the display module and ensure the reliability of the foldable terminal.

[0016] In one embodiment, the process of switching the foldable mechanism from the folded-in state to the flattened state includes a first process and a second process.

[0017] In the first process, the first sliding part drives the first transmission part to slide relative to the first fixing frame, and the second transmission part and the first plate are fixed relative to the first fixing frame.

[0018] In the second process, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first transmission member to rotate relative to the first fixed frame, the first transmission member drives the second transmission portion to rotate relative to the first fixed frame, and the second transmission portion drives the first plate to rotate relative to the first fixed frame.

[0019] During the process of the foldable mechanism switching from the inwardly folded state to the flattened state, during the first process, the first pressure plate and the first fixing frame do not rotate relative to each other, thereby preventing the first pressure plate from interfering with the display module, thereby preventing the first pressure plate from damaging the display module, and ensuring the reliability of the foldable terminal.

[0020] In one embodiment, the first transmission part is provided with a plurality of first teeth, and the plurality of first teeth are all provided on a surface of the first transmission part facing away from the first fixed frame, and the plurality of first teeth are arranged in sequence along the sliding direction of the first transmission part relative to the first fixed frame.

[0021] The second transmission part is provided with a plurality of second teeth, and the plurality of second teeth are all provided on the surface of the second transmission part away from the first plate body, and the plurality of second teeth are arranged in sequence around the direction of the rotation center of the second transmission part relative to the first fixing frame.

[0022] The first transmission member includes a first gear, a first intermittent portion, a second intermittent portion, a second gear, a third gear, and a fourth gear. The first gear, the first intermittent portion, the second intermittent portion, the second gear, the third gear, and the fourth gear are all mounted on the first fixed frame and can rotate relative to the first fixed frame. The first gear meshes with the first tooth. The first intermittent portion is fixedly connected to the first gear. The second intermittent portion abuts against the first intermittent portion. The second gear is fixedly connected to the second intermittent portion. The third gear meshes with the second gear. The fourth gear is fixedly connected to the third gear and meshes with the second tooth.

[0023] In the first process, the first sliding part drives the first transmission part to slide relative to the first fixed frame, the first transmission part drives the first gear to rotate relative to the first fixed frame, the first gear drives the first intermittent part to rotate relative to the first fixed frame, and the second intermittent part, the second gear, the third gear and the fourth gear are all fixed relative to the first fixed frame.

[0024] In the second process, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first gear to rotate relative to the first fixed frame, the first gear drives the first intermittent portion to rotate relative to the first fixed frame, the first intermittent portion drives the second intermittent portion to rotate relative to the first fixed frame, the second intermittent portion drives the second gear to rotate relative to the first fixed frame, the second gear drives the third gear to rotate relative to the first fixed frame, the third gear drives the fourth gear to rotate relative to the first fixed frame, and the fourth gear drives the second transmission portion to rotate relative to the first fixed frame.

[0025] During the process of the foldable mechanism switching from the inwardly folded state to the flattened state, during the first process, the first pressure plate and the first fixing frame do not rotate relative to each other, thereby preventing the first pressure plate from interfering with the display module, thereby preventing the first pressure plate from damaging the display module, and ensuring the reliability of the foldable terminal.

[0026] In one embodiment, the teeth of the third gear are provided on a side of the third gear facing the second gear;

[0027] And / or, the meshing teeth of the fourth gear are arranged on a side of the fourth gear facing the second gear.

[0028] The third gear and the fourth gear may adopt a non-full-tooth design, which can reduce the space occupied by the first transmission member and further reduce the space occupied by the foldable mechanism, thereby helping to achieve a miniaturized design of the foldable terminal.

[0029] In one embodiment, the first plate body is provided with a first avoidance hole, which penetrates the first plate body along the thickness direction of the first plate body, and the second transmission part extends into the first avoidance hole to reduce the thickness space occupied by the first pressure plate, thereby reducing the space occupied by the foldable mechanism, which helps to achieve a miniaturized design of the foldable terminal.

[0030] The first gear and the first intermittent portion are arranged opposite to the first avoidance hole. The first avoidance hole can avoid the first gear and the first intermittent portion, thereby preventing interference between the first pressure plate, the first gear and the first intermittent portion, and ensuring smooth movement of the foldable mechanism.

[0031] In one embodiment, during the first process, the first intermittent portion rotates by a first angle relative to the first fixing frame.

[0032] In the second process, the second thumbwheel rotates relative to the first fixing frame by a second angle, and the sum of the first angle and the second angle is equal to 180 degrees.

[0033] In one embodiment, when the foldable mechanism is in a flattened state, an angle between the bottom surface of the first plate and the first avoidance surface is a first angle, and the first angle is greater than 0 degrees and less than 90 degrees.

[0034] In one embodiment, the foldable mechanism further includes a first assembly member, the first assembly member being mounted on the first fixing frame and fixed relative to the first fixing frame, and the first transmission member being mounted on the first assembly member and rotatable relative to the first assembly member. That is, the first transmission member is mounted on the first fixing frame via the first assembly member.

[0035] In one embodiment, the first fixing frame is provided with a first sliding groove and a first assembly groove, the opening of the first sliding groove is located on the surface of the first fixing frame facing the base, the opening of the first assembly groove is located on the top surface of the first fixing frame, and the first assembly groove is connected to the first sliding groove.

[0036] The first rotating part is installed in the first sliding groove and can slide relative to the first fixing frame in the first sliding groove. The first transmission part is located in the first assembly groove and can slide relative to the first fixing frame in the first assembly groove.

[0037] The first transmission member is installed in the first assembly groove and can rotate relative to the first fixing frame in the first assembly groove.

[0038] The first swing arm and the first transmission member can reuse the space of the first fixing frame, reducing the space occupied by the first swing arm and the first transmission frame, thereby reducing the space occupied by the foldable mechanism, and helping to achieve a miniaturized design of the foldable terminal.

[0039] In one embodiment, the first rotating part includes a first rotating cylinder and a second rotating cylinder, the first rotating cylinder is mounted on the base and can rotate relative to the base, the second rotating cylinder is mounted on the base and can rotate relative to the first rotating cylinder, and the rotation center of the second rotating cylinder relative to the first rotating cylinder coincides with the rotation center of the first rotating cylinder relative to the base.

[0040] The first swing arm realizes rotation with the base through the design of the first rotating cylinder and the second rotating cylinder, which can ensure the overlap between the first swing arm and the base and ensure the assembly stability between the first swing arm and the base.

[0041] In one embodiment, the foldable mechanism further includes a second fixing frame, a second swing arm and a second pressure plate.

[0042] The second fixing frame is located on one side of the base.

[0043] The second swing arm includes a second rotating portion and a second sliding portion, the second rotating portion is rotatably connected to the base, and the second sliding portion is fixedly connected to the second rotating portion and slidably connected to the second fixing bracket.

[0044] The second pressing plate is rotatably connected to the second fixing bracket.

[0045] When the foldable mechanism is in the inwardly folded state, the second fixing frame is located on the top side of the base, and is spaced apart from and opposite to the first fixing frame. The second pressure plate is spaced apart from and opposite to the first pressure plate. The second swing arm and the first swing arm are folded relative to each other. The base, the first fixing frame, the first pressure plate, the first swing arm, the second fixing frame, the second pressure plate and the second swing arm 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 avoid interference between the foldable mechanism and the foldable part. This can prevent the foldable mechanism from damaging the display module and ensure the reliability of the foldable terminal.

[0046] In one embodiment, the second fixing frame includes a second avoidance surface, which is located on a side of the top surface of the second fixing frame facing the base and is connected to the top surface of the second pressing plate.

[0047] The second swing arm further includes a third transmission portion, and the second transmission portion is fixedly connected to the second sliding portion.

[0048] The second pressing plate includes a second plate body and a fourth transmission part, and the fourth transmission part is fixedly connected to the second plate body.

[0049] The foldable mechanism further includes a second transmission member, which is mounted on the second fixing frame and can rotate relative to the second fixing frame and abuts between the third transmission part and the fourth transmission part.

[0050] When the foldable mechanism is in the inwardly folded state, the top surface of the second plate body intersects with the top surface of the second fixing frame, and the bottom surface of the second plate body contacts the second avoidance surface.

[0051] When the foldable mechanism is in the flattened state, the top surface of the second fixing frame is flush with the top surface of the first fixing frame, the top surface of the second plate body is flush with the top surface of the second fixing frame, and the bottom surface of the second plate body is spaced apart from and arranged opposite to the second avoidance surface.

[0052] During the process of switching the foldable mechanism from the inwardly folded state to the flattened state, the second sliding portion drives the third transmission portion to slide relative to the second fixed frame, the third transmission portion drives the second transmission member to rotate relative to the second fixed frame, the second transmission member drives the fourth transmission portion to rotate relative to the second fixed frame, and the fourth transmission portion drives the second plate to rotate relative to the second fixed frame.

[0053] The foldable mechanism described in this application incorporates a second transmission member. When the second swing arm slides relative to the second fixed frame, the second swing arm acts as the primary drive, driving the second pressure plate to rotate relative to the second fixed frame via the second transmission member. When the foldable mechanism is in the flattened state, the second fixed frame and the second pressure plate effectively support the display module, preventing it from sinking and reducing its strength and reliability. This helps improve the touch and user experience of the display module and ensures the reliability of the foldable terminal.

[0054] 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.

[0055] The foldable mechanism described in this application incorporates a first transmission member. When the first swing arm slides relative to the first fixed frame, the first swing arm serves as the primary drive, driving the first pressure plate to rotate relative to the first fixed frame via the first transmission member. When the foldable mechanism is in the flattened state, the first fixed frame and the first pressure plate effectively support the display module, preventing it from sinking and reducing its strength and reliability. This helps improve the touch and user experience of the display module and ensures the reliability of the foldable terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solution of this application, the drawings required for this application will be described below.

[0057] Figure 1 This is a schematic structural diagram of the foldable terminal provided by the present application in an inwardly folded state;

[0058] Figure 2 yes Figure 1 A schematic structural diagram of the foldable terminal shown is in a flattened state;

[0059] Figure 3 yes Figure 2 A schematic structural diagram of the foldable terminal shown is in an outwardly folded state;

[0060] Figure 4 yes Figure 2 A schematic structural diagram of a foldable mechanism of a foldable device in the foldable terminal shown;

[0061] Figure 5 yes Figure 4 A schematic diagram of the exploded structure of the foldable mechanism shown;

[0062] Figure 6 yes Figure 5 A schematic structural diagram of the base in the foldable mechanism shown;

[0063] Figure 7 yes Figure 5 A schematic structural diagram of the connecting components in the foldable mechanism shown;

[0064] Figure 8 yes Figure 7 A schematic structural diagram of the first swing arm in the connecting assembly shown;

[0065] Figure 9 yes Figure 8 Schematic diagram of the exploded structure of the first swing arm shown;

[0066] Figure 10 yes Figure 7 A schematic structural diagram of the third swing arm in the connecting assembly shown;

[0067] Figure 11 yes Figure 10 Schematic diagram of the exploded structure of the third swing arm shown;

[0068] Figure 12 yes Figure 5 A schematic structural diagram of the damping assembly and the synchronization assembly in the foldable mechanism shown;

[0069] Figure 13 yes Figure 5 A schematic structural diagram of the pressure plate assembly in the foldable mechanism shown;

[0070] Figure 14 yes Figure 13 The structural schematic diagram of the pressure plate assembly shown is at another angle;

[0071] Figure 15 yes Figure 5 A schematic structural diagram of the first transmission module of the transmission assembly in the foldable mechanism shown;

[0072] Figure 16 yes Figure 15 The exploded structural diagram of the first transmission module is shown;

[0073] Figure 17 yes Figure 16 A schematic structural diagram of the first transmission member in the first transmission module shown;

[0074] Figure 18 yes Figure 17 Schematic diagram of the exploded structure of the first transmission member shown;

[0075] Figure 19 yes Figure 1 A schematic structural diagram of a foldable mechanism of a foldable device in the foldable terminal shown;

[0076] Figure 20 yes Figure 19 A schematic structural diagram of the foldable mechanism shown at another angle;

[0077] Figure 21 yes Figure 19 A schematic diagram of the partial structure of the foldable mechanism shown;

[0078] Figure 22 yes Figure 21 A schematic diagram of a partial structure of the structure shown;

[0079] Figure 23 yes Figure 4 A schematic structural diagram of the foldable mechanism shown at another angle;

[0080] Figure 24 yes Figure 23 A schematic diagram of the partial structure of the foldable mechanism shown;

[0081] Figure 25 yes Figure 24 A schematic diagram of a partial structure of the structure shown;

[0082] Figure 26 yes Figure 19 A schematic diagram of the partial structure of the foldable mechanism shown in the first intermediate state;

[0083] Figure 27 yes Figure 26 A schematic diagram of a partial structure of the structure shown;

[0084] Figure 28 yes Figure 19 A schematic diagram of the partial structure of the foldable mechanism shown in the second intermediate state;

[0085] Figure 29 yes Figure 28 A schematic diagram of a partial structure of the structure shown;

[0086] Figure 30 yes Figure 3 A schematic structural diagram of a foldable mechanism of a foldable device in the foldable terminal shown;

[0087] Figure 31 yes Figure 30 A schematic structural diagram of the foldable mechanism shown at another angle;

[0088] Figure 32 yes Figure 30 A schematic diagram of the partial structure of the foldable mechanism shown;

[0089] Figure 33 yes Figure 32 Schematic diagram of the partial structure of the structure shown. DETAILED DESCRIPTION

[0090] The technical solutions in this application will be described clearly and completely below in conjunction with the accompanying drawings in this application.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] in, Figure 1The 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] like Figure 1As 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.

[0100] 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.

[0101] like Figure 3 As 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.

[0102] 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.

[0103] 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.

[0104] 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 α, 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.

[0105] It should be noted that when the foldable terminal 1000 is in the inward folded state, the foldable mechanism 130 is in the inward folded state, and the foldable portion 230 of the display module 200 is roughly "teardrop-shaped." To prevent interference between the foldable mechanism 130 and the foldable portion 230, the mounting bracket of the foldable mechanism 130 is often designed with an inclined surface to avoid the foldable portion 230. However, when the foldable terminal 1000 is in the flattened state or the outward folded state, a large gap is formed between the mounting bracket of the foldable mechanism 130 and the foldable portion 230. The support provided by the foldable mechanism 130 for the foldable portion 230 is weakened, and the foldable portion 130 is prone to sinking. This can cause the display module 200 to suffer from problems such as poor flatness and light and shadow, and low strength reliability, resulting in poor reliability of the foldable terminal 1000.

[0106] When the foldable terminal 1000 shown in the present application is in a flattened state and an outward folded state, the foldable mechanism 130 can support the foldable part 130. 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.

[0107] Next, the foldable mechanism 130 of the foldable device 100 in the foldable terminal 1000 shown in this application is described in detail.

[0108] 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.

[0109] 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, and a transmission assembly 60. The connecting assembly 20, the damping assembly 30, and the synchronizing assembly 40 are all mounted on the base 10. The damping assembly 30 and the pressure plate assembly 50 are both 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, and the pressure plate assembly 50 can all be folded inward, flattened, or folded outward relative to the base 10, thereby transitioning between the folded inward, flattened, and folded outward states.

[0110] See also Figure 6 , Figure 6 yes Figure 5 A schematic structural diagram of the base 10 in the foldable mechanism 130 is shown.

[0111] 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 mounting groove 10a, a second mounting groove 10b, a third mounting groove 10c, a fourth mounting groove 10d, a fifth mounting groove 10e, a sixth mounting groove 10f, and a seventh mounting groove 10g. The opening of the first mounting groove 10a, the opening of the second mounting groove 10b, the opening of the third mounting groove 10c, the opening of the fourth mounting groove 10d, the opening of the fifth mounting groove 10e, the opening of the sixth mounting groove 10f, and the opening of the seventh mounting groove 10g are all located on the top surface 101 of the base 10. The first mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, the fourth mounting groove 10d, the fifth mounting groove 10e, the sixth mounting groove 10f, and the seventh mounting groove 10g 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 mounting groove 10a, the second mounting groove 10b, the third mounting groove 10c, the fourth mounting groove 10d, the fifth mounting groove 10e, and the sixth mounting groove 10f all extend through the bottom surface 102 of the base 10.

[0112] 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.

[0113] Specifically, the first mounting groove 10a is located on the left side of the base 10, and the second mounting groove 10b is located on the right side of the base 10. Along the width direction of the base 10 (the X-axis in the figure), the first mounting groove 10a and the second mounting groove 10b are spaced apart and arranged opposite each other. The first mounting groove 10a and the second mounting groove 10b are both arc-shaped grooves, and the axes of the first mounting groove 10a and the second mounting groove 10b are both parallel to the Y-axis.

[0114] For example, there are two first mounting slots 10a and two second mounting slots 10b. Along the length direction of the base 10 (the Y-axis in the figure), the two first mounting slots 10a are arranged at intervals, and the two second mounting slots 10b are arranged at intervals. In other embodiments, there may be one or more first mounting slots 10a, and / or there may be one or more second mounting slots 10b. This application does not impose specific limitations on this.

[0115] 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.

[0116] The third mounting groove 10c is located on the left side of the base 10, and the fourth mounting groove 10d is located on the right side of the base 10. Along the length direction of the base 10, the third mounting groove 10c is located on one side of the first mounting groove 10a and is spaced apart from the first mounting groove 10a. The fourth mounting groove 10d is located on the side of the third mounting groove 10c away from the second mounting groove 10b and is spaced apart from both the second mounting groove 10b and the third mounting groove 10c. Along the width direction of the base 10 (the X-axis direction in the figure), the third mounting groove 10c and the fourth mounting groove 10d partially overlap. The third mounting groove 10c and the fourth mounting groove 10d are both arc-shaped grooves, and the axis of the third mounting groove 10c and the axis of the fourth mounting groove 10d are both parallel to the Y-axis direction.

[0117] It should be noted that the partial overlap of the third mounting groove 10c and the fourth mounting groove 10d along the width direction of the base 10 means that the projections of the third mounting groove 10c and the fourth mounting groove 10d on the YZ plane partially overlap, and similar descriptions below can be understood in the same way.

[0118] Illustratively, there are two third mounting slots 10c and two fourth mounting slots 10d, and along the length of the base 10, the two third mounting slots 10c are spaced apart, and the two fourth mounting slots 10d are spaced apart. In other embodiments, there may be one, three, or more third mounting slots 10c, and / or there may be one, three, or more fourth mounting slots 10d, and this application does not impose any specific limitations on this.

[0119] The fifth mounting slot 10e is located on the left side of the base 10, and the sixth mounting slot 10f is located on the right side of the base 10. The fifth mounting slot 10e is located on the side of the first mounting slot 10a away from the third mounting slot 10c and is spaced apart from the first mounting slot 10a. The sixth mounting slot 10f is located on the side of the second mounting slot 10b away from the fourth mounting slot 10d and is spaced apart from the second mounting slot 10b. Along the width of the base 10, the fifth mounting slot 10e and the sixth mounting slot 10f are spaced apart and opposite each other.

[0120] Illustratively, there are two fifth mounting slots 10e and two sixth mounting slots 10f, and along the length of the base 10, the two fifth mounting slots 10e are spaced apart, and the two sixth mounting slots 10f are spaced apart. In other embodiments, there may be one, three, or more fifth mounting slots 10e, and / or one, three, or more sixth mounting slots 10f, and this application does not impose any specific limitations on this.

[0121] The seventh mounting slot 10g is located between the first mounting slot 10a and the fifth mounting slot 10e, and between the second mounting slot 10b and the sixth mounting slot 10f. It is spaced apart from the first mounting slot 10a, the second mounting slot 10b, the fifth mounting slot 10e, and the sixth mounting slot 10f. Exemplarily, there are two seventh mounting slots 10g, spaced apart along the length of the base 10. In other embodiments, there may be one, three, or more seventh mounting slots 10g, and this application does not impose any specific limitation on this.

[0122] 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.

[0123] The connecting assembly 20 is mounted in the first mounting slot 10a, the second mounting slot 10b, the third mounting slot 10c, and the fourth mounting slot 10d. The connecting assembly 20 includes a first fixing bracket 21, a second fixing bracket 22, a first swing arm 23, a second swing arm 24, a third swing arm 25, and a fourth swing arm 26. The first fixing bracket 21 is located on one side of the base 10 and is fixedly connected to the first housing 110. The second fixing bracket 22 is located on one side of the base 10 and is fixedly connected to the second housing 120. The first swing arm 23 is rotationally connected to the base 10 and is slidably connected to the first fixing bracket 21. The second swing arm 24 is rotationally connected to the base 10 and is slidably connected to the second fixing bracket 22. The third swing arm 25 is rotationally connected to the base 10 and is rotationally connected to the first fixing bracket 21. The fourth swing arm 26 is rotationally connected to the base 10 and is rotationally connected to the second fixing bracket 22.

[0124] 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 first swing arm 23 and the third swing arm 25 rotate relative to the base 10 is the first direction, and the direction in which the second fixed frame 22, the second swing arm 24 and the fourth swing arm 26 rotate relative to the base 10 is the second direction, and the second direction is opposite to the first direction.

[0125] For example, when the connecting assembly 20 switches from the inwardly folded state to the outwardly folded state, the first fixing frame 21, the first swing arm 23, and the third swing arm 25 rotate counterclockwise relative to the base 10, and the second fixing frame 22, the second swing arm 24, and the fourth 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 first swing arm 23, and the third swing arm 25 rotate clockwise relative to the base 10, and the second fixing frame 22, the second swing arm 24, and the fourth swing arm 26 rotate counterclockwise relative to the base 10.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] The first fixing frame 21 is provided with a first slide groove 21a, a first assembly groove 21b, a third assembly groove 21c, a first fixing hole 21d, a third slide groove 21e, a first avoidance groove 21f, and a first rotation groove 21g. The opening of the first slide groove 21a is located on the right side 214 of the first fixing frame 21. The first slide groove 21a is recessed from the right side 214 of the first fixing frame 21 toward the left side 215 (the negative direction of the X-axis in the figure) and passes through the top surface 211, the first avoidance surface 213, and the left side 215 of the first fixing frame 21. In 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 fixing frame 21, and this application does not impose specific limitations on this.

[0130] For example, there are two first chutes 21a. The two first chutes 21a are spaced apart along the length of the first fixing frame 21. In other embodiments, there may be one or more than three first chutes 21a, which is not specifically limited in this application.

[0131] The openings of the first assembly groove 21b and the third assembly groove 21c are both located on the top surface 211 and the first avoidance surface 213 of the first fixed frame 21. Both the first assembly groove 21b and the third assembly groove 21c are 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 as shown), and extend through the right side 214 and the left side 215 of the first fixed frame 21. Along the length of the first fixed frame 21 (the Y axis as shown), the first assembly groove 21b and the third assembly groove 21c are located on opposite sides of the first slide groove 21a. The first assembly groove 21b is connected to the first slide groove 21a. The third assembly groove 21c is spaced apart from the first slide groove 21a.

[0132] Illustratively, there are two first assembly grooves 21b and two third assembly grooves 21c. Each first assembly groove 21b and one third assembly groove 21c are located on opposite sides of a first slide groove 21a. In other embodiments, there may be one, three, or more first assembly grooves 21b, and / or one, three, or more third assembly grooves 21c, and this application does not impose any specific limitations on this.

[0133] The first fixing hole 21d is provided on the bottom wall of the first assembly groove 21b. Specifically, the opening of the first fixing hole 21d is located on the bottom wall of the first assembly groove 21b (not marked in the figure). The first fixing hole 21d is recessed from the bottom wall of the first assembly groove 21b toward the bottom surface 212 of the first fixing frame 21 (negative direction of the Z axis in the figure). Exemplarily, there are four first fixing holes 21d, and the openings of every two first fixing holes 21d are located on the bottom wall of one first assembly groove 21b and are spaced apart from each other. In some other embodiments, there may be less than three or more than five first fixing holes 21d, and this application does not impose any specific restrictions on this.

[0134] The third slot 21e is located on a side of the first assembly slot 21b away from the first slot 21a and is spaced apart from the first assembly slot 21b. Specifically, the opening of the third slot 21e is located on the right side 214 of the first fixed frame 21. The third slot 21e is recessed from the right side 214 of the first fixed frame 21 toward the left side 215 and extends through the bottom surface 212 and left side 215 of the first fixed frame 21. In other embodiments, the third slot 21e may not extend through the left side 215 of the first fixed frame 21 and / or the third slot 21e may not extend through the bottom surface 212 of the first fixed frame 21.

[0135] Exemplarily, there are two third chutes 21e, which are located between the two first assembly grooves 21b and spaced apart from each other. In other embodiments, there may be one or more than three third chutes 21e, which is not specifically limited in this application.

[0136] 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 passes through the right side 214 and the left side 215 of the first fixing frame 21.

[0137] Exemplarily, there are three first avoidance grooves 21f, each located between two first assembly grooves 21b, spaced apart from the two first assembly grooves 21b, and spaced apart in sequence along the length of the first fixing frame 21. One first avoidance groove 21f is located between two third chutes 21e, spaced apart from both third chutes 21e, and the other two first avoidance grooves 21f are located on opposite sides of the two third chutes 21e, spaced apart from the third chutes 21e. 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.

[0138] 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 first slide groove 21a and a first assembly groove 21b, passes through the groove side wall surface of a first slide groove 21a, and is connected to a first slide groove 21a. Of the two first rotation grooves 21g, each first rotation groove 21g is located between a first assembly groove 21b and a first avoidance groove 21f, and passes through the groove side wall of a first avoidance groove 21f and is connected to a first avoidance groove 21f. The two first rotation grooves 21g respectively pass through the two groove side walls of a first avoidance groove 21f and are connected to a first avoidance groove 21f. A first rotation groove 21g is located on the front side of the first fixed frame 21 and passes through the front side surface 217 of the first fixed 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.

[0139] In addition, the first fixing frame 21 is further provided with a first positioning post 21h. The first positioning post 21h is disposed on the bottom wall of the first assembly slot 21b and protrudes from the bottom wall of the first assembly slot 21b toward the top surface 211 of the first fixing frame 21 (in the positive direction of the Z axis as shown) and is spaced apart from the first fixing hole 21d. Exemplarily, there are four first positioning posts 21h, with each two first positioning posts 21h disposed on the bottom wall of a first assembly slot 21b and spaced apart from each other. In other embodiments, the number of first positioning posts 21h may be less than three or more than five, and this application does not impose specific limitations on this.

[0140] 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 second slide groove 22a, a second assembly groove 22b, a fourth assembly groove 22c, a third positioning hole 22d, a fourth slide groove 22e, a second avoidance groove 22f, a second rotation groove 22g, and a second positioning post 22h.

[0141] It should be noted that the second avoidance surface 223, the second slide groove 22a, the second assembly groove 22b, the fourth assembly groove 22c, the third positioning hole 22d, the fourth slide groove 22e, the second avoidance groove 22f, the second rotation groove 22g and the second positioning column 22h in the second fixed frame 22 can respectively refer to the relevant descriptions of the first avoidance surface 213, the first slide groove 21a, the first assembly groove 21b, the third assembly groove 21c, the first fixing hole 21d, the third slide groove 21e, the first avoidance groove 21f, the first rotation groove 21g and the first positioning column 21h in the first fixed frame 21, and no further details are given here.

[0142] There are two first swing arms 23, each mounted in the two first mounting slots 10a of the base 10. Both first swing arms 23 can rotate relative to the base 10 within the first mounting slots 10a. The two first swing arms 23 are also mounted in the two first slide slots 21a and first assembly slot 21b of the first fixing frame 21, respectively, and can slide relative to the first fixing frame 21 within the first slide slots 21a and first assembly slot 21b. In other embodiments, there may be one or more than three first swing arms 23, and this is not a specific limitation in this application.

[0143] In this embodiment, the two first swing arms 23 have the same structure and can both adopt the design of the first swing arm 23 described below. In other embodiments, the two first swing arms 23 can have different structures. For example, the two first swing arms 23 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two first swing arms 23 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

[0144] Please also refer to Figure 8 and Figure 9 , Figure 8 yes Figure 7 The structural diagram of the first swing arm 23 in the connecting assembly 20 is shown. Figure 9 yes Figure 8 Schematic diagram of the exploded structure of the first swing arm 23 is shown.

[0145] The first swing arm 23 includes a first rotating portion 23a, a first sliding portion 23b, a first transmission portion 23c and a first connecting portion 23d. The first rotating portion 23a is rotatably connected to the base 10. The first sliding portion 23b is fixedly connected to the first 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 first sliding portion 23b and is fixedly connected to the first sliding portion 23b. The first connecting portion 23d is fixedly connected between the first rotating portion 23a and the first sliding portion 23b. Exemplarily, the first sliding portion 23b is spaced apart from the first rotating portion 23a and is fixedly connected via the first connecting portion 23d. In other embodiments, the first sliding portion 23b and the first rotating portion 23a may also be fixedly connected by other means, and this application does not impose any specific restrictions on this.

[0146] The structure of the first rotating portion 23a matches that of the first mounting slot 10a. The first rotating portion 23a is mounted in the first mounting slot 10a and can rotate relative to the base 10 within the first mounting slot 10a, thereby achieving a rotational connection between the first swing arm 23 and the base 10. In this embodiment, the first 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 mounting slot 10a. The first rotating cylinder 231 is mounted in the first mounting slot 10a and can rotate relative to the base 10 within the first mounting 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 mounting 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 .

[0147] The first 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 first swing arm 23 and the base 10 and the assembly stability between the first swing arm 23 and the base 10. In other embodiments, the first swing arm 23 may also be rotatable relative to the base 10 through other methods, which are not specifically limited in this application.

[0148] The structure of the first sliding portion 23b is compatible with the structure of the first chute 21a. The first sliding portion 23b 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 23 and the first fixed frame 21. Along the width of the first sliding portion 23b (the Y-axis direction in the figure), the first transmission portion 23c is located on one side of the first sliding portion 23b and in the first mounting groove 21b. Driven by the first sliding portion 23b, it can slide within the first mounting groove 21b relative to the first fixed frame 21. The first transmission portion 23c is provided with a plurality of first teeth 234. The plurality of first teeth 234 are 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 first mounting groove 21b). 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 direction in the figure). Exemplarily, the first transmission portion 23c has a "rack" shape.

[0149] In one embodiment, the first 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 first connecting portion 23d. The first 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 first connecting portion 23d can be integrally formed. In some other embodiments, the first swing arm 23 can also be an integrally formed structure, or the first swing arm 23 can also be assembled using other structural parts, and this application does not impose specific restrictions on this.

[0150] Specifically, the first sub-sliding portion 237 is provided with a second positioning hole 238. The opening of the second positioning hole 238 is located on the surface of the first sub-sliding portion 237 facing away from the first connecting portion 23d. For example, there are two second positioning holes 238, which are spaced apart. In other embodiments, there may be one or more second positioning holes 238, and this application does not impose any specific limitations on this.

[0151] 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 the first 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.

[0152] The first transmission body 236 is provided with a second positioning post 240, and the second 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 second positioning post 240 is compatible with the structure of the second positioning hole 238. The second positioning post 240 can be inserted into the second 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 second positioning posts 240, and the two second positioning posts 240 are arranged at intervals and are respectively inserted into the two second positioning holes 238. In some other embodiments, there can also be one or more than three second positioning posts 240, and this application does not impose any specific restrictions on this.

[0153] 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.

[0154] See also Figure 7 There are two second swing arms 24, each mounted in the two second mounting slots 10b of the base 10. Both second swing arms 24 can rotate relative to the base 10 within the second mounting slots 10b. The two second swing arms 24 are also mounted in the two second slide slots 22a and second assembly slots 22b of the second fixing frame 22, respectively, and can slide relative to the second fixing frame 22 within the second slide slots 22a and second assembly slots 22b. In other embodiments, there may be one or more than three second swing arms 24, and this application does not impose any specific limitation on this.

[0155] In this embodiment, the two second swing arms 24 have the same structure and can both adopt the related designs of the second swing arms 24 described below. In other embodiments, the two second swing arms 24 can have different structures. For example, the two second swing arms 24 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two second swing arms 24 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

[0156] The second swing arm 24 includes a second rotating portion 24a, a second sliding portion 24b, a third transmission portion 24c, and a second connecting portion 24d. The second sliding portion 24b is spaced apart from the second rotating portion 24a. The third transmission portion 24c is located on one side of the second sliding portion 24b and is fixedly connected to the second sliding portion 24b. The second connecting portion 24d is fixedly connected between the second rotating portion 24a and the second sliding portion 24b.

[0157] The structure of the second rotating portion 24a is compatible with the structure of the second mounting slot 10b. The second rotating portion 24a is mounted in the second mounting slot 10b and can rotate relative to the base 10 within the second mounting slot 10b to achieve a rotational connection between the second swing arm 24 and the base 10. The structure of the second sliding portion 24b is compatible with the structure of the second slide slot 22a. The second sliding portion 24b is mounted in the second slide slot 22a and can slide relative to the second fixed frame 22 within the second slide slot 22a to achieve a sliding connection between the second swing arm 24 and the second fixed frame 22. Along the width direction of the second sliding portion 24b (the Y-axis direction in the figure), the third transmission portion 24c is located on one side of the second sliding portion 24b and in the second mounting slot 22b. Driven by the second sliding portion 24b, the third transmission portion 24c can slide relative to the second fixed frame 22 within the second mounting slot 22b.

[0158] It should be noted that the relevant structures of the second rotating part 24a, the second sliding part 24b, the third transmission part 24c and the second connecting part 24d in the second swing arm 24 can refer to the relevant descriptions of the first rotating part 23a, the first sliding part 23b, the first transmission part 23c and the first connecting part 23d in the first swing arm 23, and will not be repeated here.

[0159] There are two third swing arms 25, each mounted in the two third mounting slots 10c of the base 10. Both third swing arms 25 are rotatable relative to the base 10 within the third mounting slots 10c. The two third swing arms 25 are also mounted in the two third assembly slots 21c of the first fixing frame 21, each rotatable relative to the first fixing frame 21 within the third assembly slots 21c. In other embodiments, there may be one, or more than three third swing arms 25, and this is not a specific limitation in this application.

[0160] In this embodiment, the two third swing arms 25 have the same structure and can both adopt the related designs of the third swing arm 25 described below. In other embodiments, the two third swing arms 25 can have different structures. For example, the two third swing arms 25 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two third swing arms 25 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

[0161] Please also refer to Figure 10 and Figure 11 , Figure 10 yes Figure 7 The schematic structural diagram of the third swing arm 25 in the connecting assembly 20 is shown. Figure 11 yes Figure 10 Schematic diagram of the exploded structure of the third swing arm 25 is shown.

[0162] The third swing arm 25 includes a third rotating portion 25a, a fourth rotating portion 25b, and a third connecting portion 25c. The fourth rotating portion 25b is spaced apart from the third rotating portion 25a. The third connecting portion 25c is fixedly connected between the third rotating portion 25a and the fourth rotating portion 25b.

[0163] The structure of the third rotating portion 25a is compatible with the structure of the third mounting slot 10c. The third rotating portion 25a is mounted in the third mounting slot 10c and can rotate relative to the base 10 within the third mounting slot 10c to achieve a rotational connection between the third swing arm 25 and the base 10. In this embodiment, the third 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 mounting slot 10c. The fifth rotating cylinder 251 is mounted in the third mounting slot 10c and can rotate relative to the base 10 within the third mounting slot 10c. The fifth rotating cylinder 251 is provided with a third rotating groove 254. The third rotating groove 254 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 mounting slot 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.

[0164] The third 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 third swing arm 25 and the base 10 and ensures the assembly stability between the third swing arm 25 and the base 10. In other embodiments, the third swing arm 25 may also be rotatable relative to the base 10 through other methods, which are not specifically limited in this application.

[0165] The structure of the fourth rotating portion 25b is compatible with the structure of the third assembly slot 21c. The fourth rotating portion 25b is mounted in the third assembly slot 21c and can rotate within the third assembly slot 21c relative to the first fixed frame 21, thereby achieving a rotational connection between the third swing arm 25 and the first fixed frame 21. The fourth rotating portion 25b includes a first rotating shaft 256 and a first sleeve 257. The first rotating shaft 256 is mounted in the third assembly slot 21c, 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 fourth 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.

[0166] The third connecting portion 25c is fixedly connected between the seventh rotating cylinder 253 of the third rotating portion 25a and the first sleeve 257 of the fourth rotating portion 25b. The seventh rotating cylinder 253, the first sleeve 257, and the third connecting portion 25c may be integrally formed. In other embodiments, the seventh rotating cylinder 253, the first sleeve 257, and the third connecting portion 25c may not be integrally formed but may be assembled together, which is not specifically limited in this application.

[0167] See also Figure 7 There are two fourth 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 fourth swing arms 26 are also mounted in the two fourth assembly slots 22c of the second fixing frame 22, and each can rotate relative to the second fixing frame 22 within the fourth assembly slots 22c. In other embodiments, there may be one, or more than three fourth swing arms 26, and this application does not impose any specific limitation thereto.

[0168] In this embodiment, the two fourth swing arms 26 have the same structure and can both adopt the design of the fourth swing arm 26 described below. In other embodiments, the two fourth swing arms 26 can have different structures. For example, the two fourth swing arms 26 can have similar structures, symmetrical or partially symmetrical structures, or completely different structures. Alternatively, the two fourth swing arms 26 can differ in their detailed structures or positional arrangements, which are not specifically limited in this application.

[0169] The fourth swing arm 26 includes a fifth rotating portion 26a, a sixth rotating portion 26b, and a fourth connecting portion 26c. The sixth rotating portion 26b is spaced apart from the fifth rotating portion 26a. The fourth connecting portion 26c is fixedly connected between the fifth rotating portion 26a and the sixth rotating portion 26b. The structure of the fifth rotating portion 26a is compatible with the structure of the fourth mounting slot 10d. The fifth rotating portion 26a is mounted in the fourth mounting slot 10d and can rotate relative to the base 10 within the fourth mounting slot 10d to achieve a rotational connection between the fourth swing arm 26 and the base 10. The sixth rotating portion 26b is compatible with the structure of the fourth mounting slot 22c. The sixth rotating portion 26b is mounted in the fourth mounting slot 22c and can rotate relative to the second fixing frame 22 within the fourth mounting slot 22c to achieve a rotational connection between the fourth swing arm 26 and the second fixing frame 22.

[0170] It should be noted that the relevant structures of the fifth rotating part 26a, the sixth rotating part 26b and the fourth connecting part 26c in the fourth swing arm 26 can refer to the relevant descriptions of the third rotating part 25a, the fourth rotating part 25b and the third connecting part 25c in the third swing arm 25, and will not be repeated here.

[0171] 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.

[0172] The damping assembly 30 is mounted in the fifth mounting slot 10e, the sixth mounting slot 10f, and the seventh mounting slot 10g, and is slidably connected to both the first fixing 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.

[0173] In this embodiment, there are two damping assemblies 30, and each damping assembly 30 is installed in a fifth mounting slot 10e, a sixth mounting slot 10f, and a seventh mounting slot 10g. In some other embodiments, there may be one or more than three damping assemblies 30, and this application does not impose any 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.

[0174] 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 fifth swing arm 37, and a sixth swing arm 38. The first damping shaft 31 is mounted in the fifth mounting slot 10e and the seventh mounting slot 10g. The second damping shaft 32 is mounted in the sixth mounting slot 10f and the seventh mounting slot 10g. The axis of the first damping shaft 31 and the axis of the second damping shaft 32 are both parallel to the Y-axis. For example, the first damping shaft 31 and the second damping shaft 32 are both circular shafts.

[0175] 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.

[0176] The fifth swing arm 37 is mounted in the fifth mounting slot 10e and is located on the side of the first bracket 33 facing away from the first elastic member 35, abutting the first bracket 33. The fifth swing arm 37 is also mounted in the third slide slot 21e of the first fixed bracket 21 and can slide within the third slide slot 21e relative to the first fixed bracket 21, thereby achieving a sliding connection between the fifth swing arm 37 and the first fixed bracket 21. The abutment between the fifth swing arm 37 and the first bracket 33 is achieved by a cam.

[0177] The sixth swing arm 38 is mounted in the sixth mounting slot 10f and is located on the side of the first bracket 33 facing away from the second elastic member 36, abutting the first bracket 33. The sixth swing arm 38 is also mounted in the fourth slide slot 22e of the second fixing bracket 22 and can slide within the fourth slide slot 22e relative to the second fixing bracket 22, thereby achieving a sliding connection between the sixth swing arm 38 and the second fixing bracket 22. The abutment between the sixth swing arm 38 and the first bracket 33 is achieved by a cam.

[0178] When the fifth swing arm 37 and / or the sixth 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 fifth swing arm 37 and / or the sixth 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.

[0179] The synchronization assembly 40 is mounted in the seventh mounting slot 10g and is sleeved around the first damping shaft 31 and the second damping shaft 32. The synchronization assembly 40 drives the fifth swing arm 37 and the sixth swing arm 38 to rotate synchronously relative to the base 10, thereby driving the first fixing bracket 21 and the second fixing bracket 22 to rotate synchronously relative to the base 10, and further driving the first swing arm 23 and the second swing arm 24, as well as the third swing arm 25 and the fourth swing arm 26 to rotate synchronously relative to the base 10.

[0180] In this embodiment, there are two synchronization components 40, each synchronization component 40 is installed in a seventh mounting 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 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.

[0181] The synchronization assembly 40 includes a first synchronization gear 41, a second synchronization gear 42, a synchronization shaft 43, and a third synchronization gear 44. The first synchronization gear 41, the second synchronization gear 42, the synchronization shaft 43, and the third synchronization gear 44 are all mounted in the seventh mounting slot 10g. The first synchronization gear 41 is sleeved on the first damping shaft 31. The second synchronization gear 42 is sleeved on the second damping shaft 32 and spaced apart from the first synchronization gear 41. There are two synchronization shafts 43, located between the first and second damping shafts 31, 32, and spaced apart from each other. The axes of the two synchronization shafts 43 are parallel to the Y-axis. For example, both synchronization shafts 43 are circular shafts. There are two third synchronization gears 44, each sleeved on a respective synchronization shaft 43 and meshing with each other. One third synchronization gear 44 meshes with the first synchronization gear 41, and the other meshes with the second synchronization gear 42.

[0182] When the fifth swing arm 37 rotates relative to the base 10, it drives the first synchronous gear 41 to rotate relative to the base 10. The first synchronous gear 41 drives the two third synchronous gears 44 to rotate relative to the base 10. The third synchronous gear 44 drives the second synchronous gear 42 to rotate relative to the base 10. The second synchronous gear 42 drives the sixth swing arm 38 to rotate relative to the base 10, so as to realize the synchronous rotation of the fifth swing arm 37 and the sixth swing arm 38 relative to the base 10.

[0183] When the sixth swing arm 38 rotates relative to the base 10, it drives the second synchronous gear 42 to rotate relative to the base 10. The second synchronous gear 42 drives the two third synchronous gears 44 to rotate relative to the base 10. The third synchronous gear 44 drives the first synchronous gear 41 to rotate relative to the base 10. The first synchronous gear 41 drives the fifth swing arm 37 to rotate relative to the base 10, thereby achieving synchronous rotation of the fifth swing arm 37 and the sixth 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 fifth swing arm 37 and the sixth swing arm 38 relative to the base 10, and this application does not impose specific limitations on this.

[0184] Please also refer to Figure 13 and Figure 14 , Figure 13 yes Figure 5 The schematic structural diagram of the pressure plate assembly 50 in the foldable mechanism 130 is shown. Figure 14 yes Figure 13 The structure diagram of the pressure plate assembly 50 shown is from another angle.

[0185] 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.

[0186] The first pressure plate 51 includes a first plate 51a, a seventh rotating portion 51b, and a second transmission portion 51c. The seventh rotating portion 51b and the second transmission portion 51c are both fixedly connected to the first plate 51a. The first plate 51a, the seventh rotating portion 51b, and the second transmission portion 51c can be integrally formed. In other embodiments, the first plate 51a, the seventh rotating portion 51b, and the second transmission portion 51c can also be assembled by assembly, which is not specifically limited in this application.

[0187] 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 first avoidance notch 513 and a first avoidance hole 514. The first 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).

[0188] Specifically, the first 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 first avoidance gap 513 is used to avoid the third connecting portion 25c of the third 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 first avoidance gap 513. Exemplarily, there are two first avoidance gaps 513 and two first avoidance holes 514. Along the length direction of the first plate body 51a, the two first avoidance gaps 513 are spaced apart, and the two first avoidance holes 514 are located between the two first avoidance gaps 513, and are spaced apart from the two first avoidance gaps 513, and are spaced apart from each other. In some other embodiments, there may be one or more than three first 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.

[0189] The seventh 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 seventh rotating portion 51b is compatible with the structure of the first rotating groove 21g of the first fixed frame 21. The seventh rotating portion 51b is installed in the first rotating groove 21g of the first fixed frame 21 and can rotate relative to the first fixed frame 21 within the first rotating groove 21g to achieve a rotational connection between the first pressure plate 51 and the first fixed frame 21. Exemplarily, there are eight seventh rotating portions 51b. Along the length direction of the first plate body 51a, the eight seventh rotating portions 51b are arranged in sequence and spaced apart and are respectively installed in the eight first rotating 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 seventh rotating portions 51b, and this application does not impose specific limitations on this.

[0190] The second transmission part 51c is fixedly connected to the bottom surface of the first plate 51a and is located on the left side of the first plate 51a and is spaced apart from the seventh rotating part 51b. The second 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 second transmission part 51c is in the shape of an arc strip, and the axis of the second transmission part 51c is parallel to the Y-axis direction. The second transmission part 51c is provided with a plurality of second teeth 515, and the plurality of second teeth 515 are all provided on the surface of the second transmission part 51c facing away from the first plate 51a. The plurality of second teeth 515 are arranged in sequence around the direction of the rotation center of the second transmission part 51c relative to the first fixed frame 21. Exemplarily, the second transmission part 51c is in the shape of a "gear".

[0191] Illustratively, there are two second 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 second transmission parts 51c, and this application does not impose specific limitations on this.

[0192] The second pressure plate 52 includes a second plate 52a, an eighth rotating portion 52b, and a fourth transmission portion 52c. The eighth rotating portion 52b and the fourth transmission portion 52c are both fixedly connected to the second plate 52a. The second plate 52a, the eighth 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 eighth 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 seventh rotating portion 51b, and the second transmission portion 51c, respectively, and are not further elaborated here.

[0193] The second pressure plate 52 differs from the first pressure plate 51 in that the second plate 52a is provided with a second clearance notch 523 and a second clearance hole 524. The second 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 second clearance notch 523 is used to clear the fourth connecting portion 26c of the fourth swing arm 26. The second clearance hole 524 is located on the right side of the second plate 52a. The eighth rotating portion 52b is located on the right side of the second plate 52a. The eighth 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 525.

[0194] Please also refer to Figure 5 The transmission assembly 60 is mounted on the first fixed frame 21 and the second fixed frame 22, abutting between the first swing arm 23 and the first pressure plate 51, and abutting between the second swing arm 24 and the second pressure plate 52. The transmission assembly 60 includes a first transmission module 61 and a second transmission module 62. The first transmission module 61 is mounted on the first fixed frame 21. Specifically, the first transmission module 61 is mounted in the first assembly slot 21b and abuts between the first transmission portion 23c of the first swing arm 23 and the second transmission portion 51c of the first pressure plate 51. When the first swing arm 23 slides relative to the first fixed frame 21, the first transmission module 61 can drive the first pressure plate 51 to slide and rotate relative to the first fixed frame 21. Exemplarily, there are two first transmission modules 61, each mounted in a first assembly slot 21b and connected between the first transmission portion 23c of a first swing arm 23 and a second transmission portion 51c of the first pressure plate 51. In some other embodiments, there may be one or more than three first transmission modules 61 , and this application does not impose any specific limitation on this.

[0195] The second transmission module 62 is mounted on the second fixed frame 22. Specifically, the second transmission module 62 is mounted in the second assembly slot 22b and abuts between the third transmission portion 24c of the second swing arm 24 and the fourth transmission portion 52c of the second pressure plate 52. When the second swing arm 24 slides relative to the first fixed frame 21, the second transmission module 62 can drive the second pressure plate 52 to slide and rotate relative to the second fixed frame 22. Exemplarily, there are two second transmission modules 62, each of which is mounted in a second assembly slot 22b and connected between the third transmission portion 24c of a second swing arm 24 and a fourth transmission portion 52c of the second pressure plate 52. In some other embodiments, there can be one or more than three second transmission modules 62, and this application does not impose any specific limitation on this.

[0196] Please also refer to Figure 15 and Figure 16 , Figure 15 yes Figure 5 The schematic structural diagram of the first transmission module 61 of the transmission assembly 60 in the foldable mechanism 130 is shown. Figure 16 yes Figure 15 Schematic diagram of the exploded structure of the first transmission module 61 is shown.

[0197] The first transmission module 61 includes a first assembly part 61a, a first fixing part (not shown), and a first transmission part 61c. The first assembly part 61a, the first fixing part (not shown), and the first transmission part 61c are all mounted in the first assembly slot 21b of the first fixing frame 21. The first assembly part 61a is mounted in the first assembly slot 21b and is fixed relative to the first fixing frame 21. The first fixing part is connected between the first assembly part 61a and the first fixing frame 21 to mount the first assembly part 61a to the first fixing frame 21. The first transmission part 61c is mounted on the first assembly part 61a and is rotatable relative to the first assembly part 61a and the first fixing frame 21, and abuts between the first transmission part 23c of the first swing arm 23 and the second transmission part 51c of the first pressure plate 51.

[0198] The first assembly part 61a includes a first assembly plate 61d and a first assembly shell 61e. The first assembly plate 61d is provided with a first positioning hole 611 and a second fixing hole 612. The first positioning hole 611 and the second fixing hole 612 both penetrate the first assembly plate 61d along the thickness direction of the first assembly plate 61d (Z-axis direction in the figure) and are spaced apart from each other. The structure of the first positioning hole 611 is compatible with the structure of the first positioning column 21h of the first fixing frame 21. The first positioning column 21h is inserted into the first positioning hole 611 to achieve positioning of the first assembly part 61a and the first fixing frame 21, thereby ensuring the assembly accuracy of the first assembly part 61a and the first fixing frame 21. For example, there are two first positioning holes 611, and the two first positioning holes 611 are spaced apart from each other. The two first positioning columns 21h are respectively inserted into the two first positioning holes 611. In some other embodiments, there may be one or more than three first positioning holes 611, and this application does not impose any specific restrictions on this.

[0199] The second fixing hole 612 is connected to the first fixing hole 21d of the first fixing frame 21. For example, there are two second fixing holes 612, which are spaced apart and respectively connected to the two first fixing holes 21d. In other embodiments, there may be one or more second fixing holes 612, and this application does not impose any specific limitations on this.

[0200] The first assembly shell 61e is fixedly connected to the top surface (not shown) of the first assembly plate 61d and is spaced apart from the first positioning hole 611 and the second fixing hole 612. The first assembly shell 61e is provided with a first mounting hole 613, which extends through the first assembly shell 61e along its height (Z-axis direction in the figure). The first assembly plate 61d and the first assembly shell 61e may be integrally formed.

[0201] The first fixing member is provided through the second fixing hole 612 and the first fixing hole 21d, and fixedly connects the first fixing frame 21 and the first assembly part 61a, so as to install the first assembly part 61a on the first fixing frame 21, thereby realizing the assembly between the first transmission module 61 and the first fixing frame 21. Among them, the first fixing member can be a structural member such as a screw or a bolt that can play a fixing role. In some other embodiments, the first assembly part 61a can also be assembled to the first fixing frame 21 by other methods such as bonding or welding, and this application does not impose specific restrictions on this. Exemplarily, there are two first fixing members, each of which is provided through a second fixing hole 612 and a first fixing hole 21d, and fixedly connects the first fixing frame 21 and the first assembly part 61a. In some other embodiments, there can also be one or more than three first fixing members, and this application does not impose specific restrictions on this.

[0202] Please also refer to Figure 17 and Figure 18 , Figure 17 yes Figure 16 The structural diagram of the first transmission member 61c in the first transmission module 61 is shown in FIG. Figure 18 yes Figure 17 Schematic diagram of the exploded structure of the first transmission member 61c is shown.

[0203] The first transmission member 61c is mounted in the first mounting hole 613 and is rotatable relative to the first assembly member 61a within the first mounting hole 613. The first transmission member 61c includes a first transmission shaft 61f, a second transmission shaft 61g, a third transmission shaft 61h, a first gear 61i, a first intermittent portion 61j, a second intermittent portion 61k, a second gear 61l, a third gear 61m, and a fourth gear 61n. The first transmission shaft 61f, the second transmission shaft 61g, the third transmission shaft 61h, the first gear 61i, the first intermittent portion 61j, the second intermittent portion 61k, the second gear 61l, the third gear 61m, and the fourth gear 61n are all mounted in the first mounting hole 613 and are all rotatable relative to the first assembly member 61a and the first fixed bracket 21. Specifically, the first transmission shaft 61f, the second transmission shaft 61g, and the third transmission shaft 61h are spaced apart from each other. For example, the axes of the first transmission shaft 61f, the second transmission shaft 61g, and the third transmission shaft 61h are all parallel to the Y-axis.

[0204] The first gear 61i and the first intermittent portion 61j are both sleeved on the first transmission shaft 61f, arranged around the first transmission shaft 61f, and fixedly connected to the first transmission shaft 61f, and can also rotate relative to the first assembly member 61a around the axis of the first transmission shaft 61f. For example, the first transmission shaft 61f, the first gear 61i, and the first intermittent portion 61j can be integrally formed. In other embodiments, the first transmission shaft 61f, the first gear 61i, and the first intermittent portion 61j can also be assembled together, and this application does not impose specific limitations on this.

[0205] In this embodiment, the first gear 61i and the first intermittent portion 61j are further disposed opposite the first avoidance hole 514 of the first pressure plate 51. The first gear 61i and the first intermittent portion 61j are inserted through the first avoidance hole 514 of the first pressure plate 51 to prevent interference between the first transmission member 61c and the first pressure plate 51, thereby ensuring smooth rotation of the foldable mechanism 130. Specifically, the first gear 61i engages with the first teeth 234 of the first transmission portion 23c of the first swing arm 23. The first intermittent portion 61j is located on one side of the first gear 61i and is fixedly connected to the first gear 61i. Exemplarily, the first intermittent portion 61j is spaced apart from the first gear 61i and is fixedly connected via a first transmission shaft 61f. In other embodiments, the first intermittent portion 61j and the first gear 61i may be fixedly connected by other means, such as directly fixedly connected to the first gear 61i, or fixedly connected to the first gear 61i via other structural members.

[0206] The first intermittent portion 61j can be a dial. The first intermittent portion 61j is provided with a third avoidance notch 616, the opening of which is located on the circumferential surface of the first intermittent portion 61j (not shown). The third avoidance notch 616 is recessed from the circumferential surface of the first intermittent portion 61j toward the first transmission shaft 61f. In addition, the first intermittent portion 61j is further provided with a first toggle lever 617, the toggle portion of the first toggle lever 617 (not shown) protruding relative to the circumferential surface of the first intermittent portion 61j and arranged opposite the third avoidance notch 616.

[0207] When the first swing arm 23 slides relative to the first fixed frame 21, the first transmission portion 23c drives the first gear 61i to rotate about the axis of the first transmission shaft 61f relative to the first assembly 61a and the first fixed frame 21. The first gear 61i drives the first transmission shaft 61f to rotate about the axis of the first transmission shaft 61f relative to the first assembly 61a and the first fixed frame 21. The first transmission shaft 61f drives the first intermittent portion 61j to rotate about the axis of the first transmission shaft 61f relative to the first assembly 61a and the first fixed frame 21. It should be noted that the sliding distance of the first swing arm 23 relative to the first fixed frame 21 must be compatible with the gear diameter of the first gear 61i to meet the required rotation angle of the second intermittent portion 61k.

[0208] The second intermittent portion 61k and the second gear 61l are both sleeved on the second transmission shaft 61g, and are both arranged around the second transmission shaft 61g and fixedly connected to the second transmission shaft 61g. They can also rotate around the axis of the second transmission shaft 61g relative to the first assembly part 61a and the first fixed frame 21. The second gear 61l is located on one side of the second intermittent portion 61k and is fixedly connected to the second gap portion 61k. Exemplarily, the second transmission shaft 61g, the second intermittent portion 61k and the second gear 61l can be integrally formed. In other embodiments, the second transmission shaft 61g, the second intermittent portion 61k and the second gear 61l can also be assembled together, and this application does not impose specific restrictions on this.

[0209] Specifically, the second intermittent portion 61k abuts against the first intermittent portion 61j. The second intermittent portion 61k may be a groove wheel. The second intermittent portion 61k is provided with a first card slot 618, and the opening of the first card slot 618 is located on the circumferential surface of the second intermittent portion 61k (not marked in the figure). The first card slot 618 is recessed from the circumferential side surface of the second intermittent portion 61k toward the direction of the second transmission shaft 61g. The structure of the first card slot 618 is adapted to the structure of the toggle portion of the first toggle rod 617. Exemplarily, there are four first card slots 618, and the four first card slots 618 are evenly spaced around the axis of the second transmission shaft 61g. In some other embodiments, there may be more than three or more than five first card slots 618, and this application does not impose specific restrictions on this.

[0210] During the process of the first intermittent portion 61j rotating around the axis of the first transmission shaft 61f relative to the first assembly part 61a and the first fixed frame 21, when the first toggle rod 617 of the first intermittent portion 61j is inserted into the first slot 618 of the second intermittent portion 61k, the first intermittent portion 61j drives the second intermittent portion 61k to rotate around the axis of the second transmission shaft 61g relative to the first assembly part 61a and the first fixed frame 21, and drives the second transmission shaft 61g to rotate around the axis of the second transmission shaft 61g relative to the first assembly part 61a and the first fixed frame 21, and the second transmission shaft 61g drives the second gear 61l to rotate around the axis of the second transmission shaft 61g relative to the first assembly part 61a and the first fixed frame 21.

[0211] The third gear 61m and the fourth gear 61n are both disposed on the outer circumferential surface of the third transmission shaft 61h and are arranged along the circumference of the third transmission shaft 61h. They are fixedly connected to the third transmission shaft 61h and can rotate about the axis of the third transmission shaft 61h relative to the first assembly member 61a and the first fixed frame 21. For example, the third transmission shaft 61h, the third gear 61m, and the fourth gear 61n can be integrally formed. In other embodiments, the third transmission shaft 61h, the third gear 61m, and the fourth gear 61n can also be assembled together, which is not specifically limited in this application.

[0212] Specifically, the third gear 61m is meshed with the second gear 61l. The fourth gear 61n is located on one side of the third gear 61m and is fixedly connected to the third gear 61m, and is meshed with the second gear 515 of the second transmission portion 51c in the first pressure plate 51. Exemplarily, the fourth gear 61n is spaced apart from the third gear 61m and is fixedly connected via the third transmission shaft 61h. In some other embodiments, the fourth gear 61n and the third gear 61m may also be fixedly connected in other ways. For example, the fourth gear 61n and the third gear 61m may be directly fixedly connected, or the fourth gear 61n and the third gear 61m may be fixedly connected via other structural members. This application does not impose any specific restrictions on this.

[0213] The teeth of the third gear 61m are located on the side of the third gear 61m facing the second gear 61l, and the teeth of the fourth gear 61n are located on the side of the fourth gear 61n facing the second gear 61l. That is, both the third gear 61m and the fourth gear 61n employ a non-full-tooth design, which reduces the space occupied by the first transmission member 61c and, in turn, the space occupied by the first transmission module 61, thereby facilitating a miniaturized design of the foldable terminal 1000. In other embodiments, the teeth of the third gear 61m may be disposed around the third transmission shaft 61h, i.e., the third gear 61m may employ a full-tooth design, and / or the teeth of the fourth gear 61n may be disposed around the third transmission shaft 61h, i.e., the fourth gear 61n may employ a full-tooth design. This is not specifically limited in this application.

[0214] When the second gear 61l rotates around the axis of the second transmission shaft 61g relative to the first assembly part 61a and the first fixed frame 21, the second gear 61l drives the third gear 61m to rotate around the axis of the third transmission shaft 61h relative to the first assembly part 61a and the first fixed frame 21, the third gear 61m drives the third transmission shaft 61h to rotate around the axis of the third transmission shaft 61h relative to the first assembly part 61a and the first fixed frame 21, the third transmission shaft 61h drives the fourth gear 61n to rotate around the axis of the third transmission shaft 61h relative to the first assembly part 61a and the first fixed frame 21, and the fourth gear 61n drives the second transmission part 51c of the first pressure plate 51 to slide and rotate relative to the first fixed frame 21.

[0215] See also Figure 5 and Figure 7 The second transmission module 62 includes a second assembly part (not marked in the figure), a second fixing part (not marked in the figure) and a second transmission part (not marked in the figure). The second assembly part is installed in the second assembly groove 22b. The second fixing part is connected between the second assembly part and the second fixing frame 22 to install the second assembly part on the second fixing frame 22. The second transmission part is installed on the second assembly part and can rotate relative to the second assembly part, and is connected between the third transmission part 24c of the second swing arm 24 and the fourth transmission part 52c of the second pressure plate 52. It should be noted that the structure of each component in the second transmission module 62, and the matching relationship between each component in the second transmission module 62 and the second fixing frame 22, the second swing arm 24 and the second pressure plate 52 can all refer to the relevant description of the first transmission module 61, and this application will not repeat them here.

[0216] See also Figure 19 and Figure 20 , Figure 19 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 20 yes Figure 19The structure diagram of the foldable mechanism 130 shown is shown at another angle.

[0217] When the foldable mechanism 130 is in the inward folded state, the first fixing frame 21 and the second fixing frame 22 are both located on the top side of the base 10, and are spaced and arranged opposite to each other. The first swing arm 23 and the second swing arm 24 are folded relative to each other, the third swing arm 25 and the fourth swing arm 26 are folded relative to each other, and the fifth swing arm 37 and the sixth swing arm 38 are folded relative to each other. The top surface 511 of the first plate body 51a in the first pressure plate 51 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 521 of the second plate body 52a in the second pressure plate 52 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 .

[0218] 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.

[0219] Please also refer to Figure 7 、 Figure 13 and Figure 14 When the foldable mechanism 130 is in the inward folded state, the third connecting portion 25c of the third swing arm 25 can be inserted into the first avoidance notch 513 of the first pressure plate 51, and the fourth connecting portion 26c of the fourth swing arm 26 can be inserted into the second avoidance notch 523 of the second pressure plate 52, so as to avoid mutual interference between the third swing arm 25 and the first pressure plate 51, and between the fourth swing arm 26 and the second pressure plate 52, thereby ensuring the smooth rotation of the foldable mechanism 130.

[0220] It should be noted that the matching relationship between the second transmission member of the second transmission module 62 and the second swing arm 24 and the second pressure plate 52 is roughly the same as the matching relationship between the first transmission member 61c of the first transmission module 61 and the first swing arm 23 and the first pressure plate 51. The matching relationship between the first transmission member 61c of the first transmission module 61 and the first swing arm 23 and the first pressure plate 51 will be used as an example to illustrate, and the matching relationship between the second transmission member of the second transmission module 62 and the second swing arm 24 and the second pressure plate 52 will not be repeated in the following text.

[0221] Please also refer to Figure 21 and Figure 22 , Figure 21 yes Figure 19 The schematic diagram of the partial structure of the foldable mechanism 130 is shown. Figure 22 yes Figure 21 The schematic diagram of the local structure of the structure shown. Figure 21 Only the first transmission body 236 of the first swing arm 23, the first transmission member 61c of the first transmission module 61 and the first pressure plate 51 are shown. Figure 22 Only the first transmission body 236 of the first swing arm 23 and the first transmission member 61 c of the first transmission module 61 are shown.

[0222] The first gear 61i is engaged with one end of the first transmission part 23c away from the first rotating part 23a, the circumferential surface of the first intermittent part 61j is in contact with the circumferential surface of the second intermittent part 61k, the first driving rod 617 of the first intermittent part 61j is spaced apart from the first card groove 618 of the second intermittent part 61k, and the fourth gear 61n is engaged with one end of the second transmission part 51c away from the first avoidance hole 514.

[0223] See also Figure 4 and Figure 23 , Figure 23 yes Figure 4 The structure diagram of the foldable mechanism 130 shown is shown at another angle.

[0224] 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 first swing arm 23 and the second swing arm 24 are relatively flattened, the third swing arm 25 and the fourth swing arm 26 are relatively flattened, the fifth swing arm 37 and the sixth swing arm 38 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. 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 the display module 200 sinking, avoids the problem of flatness and light and shadow differences, low strength reliability and other problems of the display module 200, and ensures the reliability of the use of the foldable terminal 1000.

[0225] Furthermore, the bottom surface 512 of the first plate 51a of the first pressure plate 51 is spaced apart from and opposite to the first relief 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 relief surface 223 of the second fixing frame 22. The angle between the bottom surface 512 of the first plate 51a and the first relief surface 213 is a first angle θ1, and the angle between the bottom surface 522 of the second plate 52a and the second relief surface 223 is a first angle θ2. Both θ1 and θ2 are greater than 0 degrees and less than 90 degrees. For example, both θ1 and θ2 are 15 degrees.

[0226] See also Figure 24 and Figure 25 , Figure 24 yes Figure 23 The schematic diagram of the partial structure of the foldable mechanism 130 is shown. Figure 25 yes Figure 24 The schematic diagram of the local structure of the structure shown. Figure 24 Only the first transmission body 236 of the first swing arm 23, the first transmission member 61c of the first transmission module 61 and the first pressure plate 51 are shown. Figure 25 Only the first transmission body 236 of the first swing arm 23 and the first transmission member 61 c of the first transmission module 61 are shown.

[0227] The first gear 61i meshes with the center of the first transmission portion 23c, the circumference of the first intermittent portion 61j abuts the circumference of the second intermittent portion 61k, the first toggle lever 617 of the first intermittent portion 61j is positioned opposite the first latching slot 618 of the second intermittent portion 61k, and the fourth gear 61n meshes with the end of the second transmission portion 51c away from the first escape hole 514. During the transition of the foldable mechanism 130 from the inwardly folded state to the flattened state, the first gear 61i and the first intermittent portion 61j rotate about the axis of the first transmission shaft 61f by a fourth angle, the second intermittent portion 61k and the second gear 61l rotate about the axis of the second transmission shaft 61g by an eleventh angle, and the third gear 61m and the fourth gear 61n rotate about the axis of the third transmission shaft 61h by a third angle. The fourth, eleventh, and third angles are all greater than 0 degrees and less than or equal to 180 degrees. For example, the fourth angle may be 180 degrees, and the eleventh and third angles are both less than the fourth angle. It should be noted that the eleventh angle may also be equal to or greater than the fourth angle, and / or the third angle may also be equal to or greater than the fourth angle. This application does not impose any specific restrictions on this.

[0228] See also Figure 26 and Figure 27 , Figure 26 yes Figure 19 The schematic diagram of the partial structure of the foldable mechanism 130 in the first intermediate state is shown. Figure 27 yes Figure 26 The schematic diagram of the local structure of the structure shown. Figure 26 Only the first transmission body 236 of the first swing arm 23, the first transmission member 61c of the first transmission module 61 and the first pressure plate 51 are shown. Figure 27 Only the first transmission body 236 of the first swing arm 23 and the first transmission member 61 c of the first transmission module 61 are shown.

[0229] It should be noted that the foldable mechanism 130 being in the first intermediate state refers to an intermediate state between the folded-in state and the flattened state. In this state, the foldable mechanism 130 has a first deployment angle α, which is greater than 0 degrees and less than 180 degrees. For example, the first deployment angle α can be 90 degrees. It should be understood that the deployment angle of the foldable mechanism 130 can be the angle between the first swing arm 23 and the second swing arm 24, and the same description below shall apply.

[0230] The first gear 61i meshes with the middle portion of the first transmission portion 23c, the circumference of the first intermittent portion 61j abuts against the circumference of the second intermittent portion 61k, the first toggle lever 617 of the first intermittent portion 61j is positioned opposite the first engaging slot 618 of the second intermittent portion 61k, and the fourth gear 61n meshes with the end of the second transmission portion 51c away from the first avoidance hole 514. At this point, the first toggle lever 617 of the first intermittent portion 61j is about to be inserted into the first engaging slot 618 of the second intermittent portion 61k.

[0231] During the transition of the foldable mechanism 130 from the inwardly folded state to the first intermediate state, the first gear 61i and the first intermittent portion 61j rotate about the axis of the first transmission shaft 61f relative to the first fixed frame 21 by a first angle. The second intermittent portion 61k, the second gear 61l, the third gear 61m, and the fourth gear 61n do not rotate, and the fourth gear 61n does not drive the first pressure plate 51 to rotate relative to the first fixed frame 21. The first angle is greater than 0 degrees and less than α. For example, the first angle can be 90 degrees. During this process, the first intermittent portion 61j rotates idly, and the position of the first pressure plate 51 relative to the first fixed frame 21 remains unchanged.

[0232] See also Figure 28 and Figure 29 , Figure 28 yes Figure 19 The schematic diagram of the partial structure of the foldable mechanism 130 in the second intermediate state is shown. Figure 29 yes Figure 28 The schematic diagram of the local structure of the structure shown. Figure 28 Only the first transmission body 236 of the first swing arm 23, the first transmission member 61c of the first transmission module 61 and the first pressure plate 51 are shown. Figure 29 Only the first transmission body 236 of the first swing arm 23 and the first transmission member 61 c of the first transmission module 61 are shown.

[0233] It should be noted that the foldable mechanism 130 being in the second intermediate state refers to an intermediate state in which the foldable mechanism 130 switches between the first intermediate state and the flattened state. In this state, the unfolded angle of the foldable mechanism 130 is a second unfolded angle β, which is greater than the first unfolded angle α and less than 180 degrees. For example, the second unfolded angle β may be 135 degrees.

[0234] The first gear 61i meshes with the middle portion of the first transmission member 23c. The first toggle lever 617 of the first intermittent member 61j is inserted into the first slot 618 of the second intermittent member 61k and abuts the second intermittent member 61k. The fourth gear 61n meshes with the end of the second transmission member 51c distal from the first avoidance hole 514. The second intermittent member 61k can extend into the third avoidance notch 616 of the first intermittent member 61j. Specifically, the third avoidance notch 616 avoids the second intermittent member 61k, preventing interference between the first and second intermittent members 61j, ensuring smooth transmission of the first transmission member 61c and, consequently, smooth rotation of the foldable mechanism 130. Furthermore, the second intermittent member 61k reuses the space of the first intermittent member 61j, reducing the space occupied by the first transmission member 61c and, consequently, the space occupied by the first transmission module 61, thereby contributing to a compact design for the foldable terminal 1000.

[0235] Please also refer to Figure 26 and Figure 27 In the process of switching the foldable mechanism 130 from the first intermediate state to the second intermediate state, the first gear 61i and the first intermittent portion 61j both rotate around the axis of the first transmission shaft 61f by the fifth angle, the second intermittent portion 61k and the second gear 61l both rotate around the second transmission shaft 61g by the sixth angle, and the third gear 61m and the fourth gear 61n both rotate around the third transmission shaft 61h by the seventh angle. Among them, the fifth angle, the sixth angle and the seventh angle are all greater than 0 degrees and less than β-α. For example, the fifth angle, the sixth angle and the seventh angle can all be 45 degrees. It should be noted that the sixth angle and the seventh angle may not be equal to the fifth angle. For example, the sixth angle may be greater than or less than the fifth angle, and / or the seventh angle may be greater than or less than the fifth angle. This application does not impose any specific restrictions on this.

[0236] Please also refer to Figure 24 and Figure 25 In the process of switching the foldable mechanism 130 from the second intermediate state to the flattened state, the first gear 61i and the first intermittent portion 61j both rotate around the axis of the first transmission shaft 61f by the eighth angle, the second intermittent portion 61k and the second gear 61l both rotate around the second transmission shaft 61g by the ninth angle, and the third gear 61m and the fourth gear 61n both rotate around the third transmission shaft 61h by the tenth angle. Among them, the eighth angle, the ninth angle and the tenth angle are all greater than 0 degrees and less than 180-β. For example, the eighth angle, the ninth angle and the tenth angle may all be 45 degrees. It should be noted that the ninth angle and the tenth angle may not be equal to the eighth angle. For example, the ninth angle may be greater than or less than the eighth angle, and / or the tenth angle may be greater than or less than the eighth angle. This application does not impose any specific restrictions on this.

[0237] From the above, it can be seen that when the foldable mechanism 130 switches from the inward folded state to the flattened state, the first swing arm 23 slides relative to the first fixed frame 21, and the first transmission part 23c of the first swing arm 23 drives the first transmission member 61c to rotate relative to the first fixed frame 21. The first transmission member 61c drives the second transmission part 51c of the first pressure plate 51 to rotate relative to the first fixed frame 21, and the second transmission part 51c drives the first plate body 51a of the first pressure plate 51 to rotate relative to it.

[0238] In this embodiment, the relative movement among the first transmission member 61 c , the first swing arm 23 and the first pressure plate 51 can be divided into two processes: a first process and a second process.

[0239] During the first process, the foldable mechanism 130 switches from the inwardly folded state to the first intermediate state. The first swing arm 23 slides relative to the first fixed frame 21, and the first sliding portion 23b of the first swing arm 23 drives the first transmission portion 23c to slide relative to the first fixed frame 21. The first plate 51a and the second transmission portion 51c of the first pressure plate 51 are fixed relative to the first fixed frame 21. Specifically, the first transmission portion 23c drives the first gear 61i and the first intermittent portion 61j to rotate relative to the first fixed frame 21 by a first angle. The second intermittent portion 61k, the second gear 61l, the third gear 61m, and the fourth gear 61n are all fixed relative to the first fixed frame 21. That is, the second intermittent portion 61k, the second gear 61l, the third gear 61m, and the fourth gear 61n do not rotate relative to the first fixed frame 21, and the fourth gear 61n cannot drive the first pressure plate 51 to rotate relative to the first fixed frame 21. During this process, the first intermittent portion 61j rotates idle, the first plate body 51a and the second transmission portion 51c of the first pressing plate 51 do not rotate relative to the first fixing frame 21, and the position of the first pressing plate 51 relative to the first fixing frame 21 remains unchanged.

[0240] In the second process, the foldable mechanism 130 switches from the first intermediate state to the flattened state, the first swing arm 23 slides relative to the first fixed frame 21, the first sliding portion 23b of the first swing arm 23 drives the first transmission portion 23c to slide relative to the first fixed frame 21, the first transmission portion 23c drives the first transmission member 61c to rotate relative to the first fixed frame 21, the first transmission member 61c drives the second transmission portion 51c of the first pressure plate 51 to rotate relative to the first fixed frame 21, and the second transmission portion 51c drives the first plate body 51a to rotate relative to the first fixed frame 21. Specifically, the first transmission portion 23c drives the first gear 61i and the first intermittent portion 61j to rotate relative to the first fixed frame 21 by a second angle. The first toggle lever 617 of the first intermittent portion 61j is inserted into the first engaging slot 618 of the second intermittent portion 61k and abuts against the first intermittent portion 61j. The first intermittent portion 61j drives the second intermittent portion 61k and the second gear 61l to rotate relative to the first fixed frame 21 by an eleventh angle. The second gear 61l drives the third gear 61m and the fourth gear 61n to rotate relative to the first fixed frame 21 by a third angle. The fourth gear 61n drives the first pressure plate 51 to rotate relative to the first fixed frame 21 by a twelfth angle. Here, the second angle = the fourth angle - the first angle, and the twelfth angle is equal to the first included angle θ1.

[0241] It should be understood that the angle of the first angle θ1 can be adjusted by adjusting the transmission ratio of the gears that mesh with each other in the first transmission member 61c. For example, the angle of the first angle θ1 can be adaptively adjusted by adjusting the gear radius of multiple gears. This application does not impose any specific restrictions on this.

[0242] In this embodiment, during the first phase of the transition from the inwardly folded state to the flattened state of the foldable mechanism 130, the first pressure plate 51 and the first fixing frame 21 do not rotate relative to each other. This prevents the first pressure plate 51 from interfering with the foldable portion 230 of the display module 200, thereby preventing the first pressure plate 51 from damaging the foldable portion 230 and ensuring the reliability of the foldable terminal 1000. In other embodiments, during the transition from the inwardly folded state to the flattened state of the foldable mechanism 130, the movement of the first transmission member 61c may not be divided into two phases. The structure of the first transmission member 61c can be adjusted to adjust the rotational speed of the first swing arm 23, via the first transmission member 61c, the first pressure plate 51 relative to the first fixing frame 21. In this case, the first transmission member 61c can always drive the first pressure plate 51 to rotate relative to the first fixing frame 21. This is not specifically limited in this application.

[0243] See also Figure 30 and Figure 31 , Figure 30 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 31yes Figure 30 The structure of the foldable mechanism 130 is shown in another perspective.

[0244] 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 first swing arm 23 and the second swing arm 24 are folded back to back. The third swing arm 25 and the fourth swing arm 26 are folded back to back. The fifth swing arm 37 and the sixth swing arm 38 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 body 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 body 52a and the top surface 221 of the second fixing frame 22 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.

[0245] Furthermore, the bottom surface 512 of the first plate 51a of the first pressure plate 51 is spaced apart from the first relief 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 relief surface 223 of the second fixing frame 22. The angle between the bottom surface 512 of the first plate 51a and the first relief surface 213 is a first angle θ1, and the angle between the bottom surface 522 of the second plate 52a and the second relief surface 223 is a first angle θ2. Both θ1 and θ2 are greater than 0 degrees and less than 90 degrees. For example, both θ1 and θ2 are 15 degrees.

[0246] See also Figure 32 and Figure 33 , Figure 32 yes Figure 30 The schematic diagram of the partial structure of the foldable mechanism 130 is shown. Figure 33 yes Figure 32 The schematic diagram of the local structure of the structure shown. Figure 32 Only the first transmission body 236 of the first swing arm 23, the first transmission member 61c of the first transmission module 61 and the first pressure plate 51 are shown. Figure 33 Only the first transmission body 236 of the first swing arm 23 and the first transmission member 61 c of the first transmission module 61 are shown.

[0247] The first gear 61i is engaged with one end of the first transmission part 23c close to the first rotating part 23a, the circumferential surface of the first intermittent part 61j is in contact with the circumferential surface of the second intermittent part 61k, the first driving rod 617 of the first intermittent part 61j and the first card groove 618 of the second intermittent part 61k are spaced apart and can be extended into the first avoidance hole 514 of the first pressure plate 51, and the fourth gear 61n is engaged with one end of the second transmission part 51c away from the first avoidance hole 514.

[0248] During the transition of the foldable mechanism 130 from the flattened state to the outwardly folded state, the first swing arm 23 slides relative to the first fixed frame 21. The first sliding portion 23b of the first swing arm 23 drives the first transmission portion 23c to slide relative to the first fixed frame 21, and the first plate 51a and second transmission portion 51c of the first pressure plate 51 are fixed relative to the first fixed frame 21. Specifically, the first gear 61i and the first intermittent portion 61j rotate about the axis of the first transmission shaft 61f through a thirteenth angle. The second intermittent portion 61k, the second gear 61l, the third gear 61m, and the fourth gear 61n do not rotate, and the fourth gear 61n does not drive the first pressure plate 51 to rotate relative to the first fixed frame 21. The thirteenth angle is greater than 0 degrees and less than or equal to 90 degrees. For example, the thirteenth angle can be 90 degrees. During this process, the first intermittent portion 61j rotates idly, and the position of the first pressure plate 51 relative to the first fixed frame 21 remains unchanged.

[0249] In the foldable terminal 1000 shown in this application, a transmission assembly 60 is designed within the folding mechanism 130. When the first swing arm 23 slides relative to the first fixed frame 21, the first swing arm 23 can serve as the primary drive, driving the first pressure plate 51 to rotate relative to the first fixed frame 21 via the first transmission member 61c. When the second swing arm 24 slides relative to the second fixed frame 22, the second swing arm 24 and the first swing arm 23 can serve as the primary drive, driving the second pressure plate 52 to rotate relative to the first fixed frame 21 via the second transmission member. When the foldable terminal 1000 is in the flattened state and the folded-out state, the first fixed frame 21, the second fixed frame 22, the first pressure plate 51, and the second pressure plate 52 can effectively support the display module 200, preventing the display module 200 from sinking and other problems such as low strength and reliability. This helps improve the touch and user experience of the display module 200 and ensures the reliability of the foldable terminal 1000.

[0250] In addition, both the first transmission member 61c and the second transmission member can adopt a gear and groove wheel design, and the linkage of the gear and groove wheel is used to realize the linkage between the first swing arm 23 and the first pressure plate 51, and the second swing arm 24 and the second pressure plate 52. Not only are the structures of the first transmission member 61c and the second transmission member simple, easy to implement and highly reliable, but the groove wheel can also serve as an intermittent mechanism to make the first pressure plate 51 and the second pressure plate 52 rotate intermittently, so as to ensure that the first pressure plate 51 and the second pressure plate 52 can effectively support the display module 200 when the foldable terminal 1000 is in the flattened state and the folded state.

Claims

1. A foldable mechanism, characterized in that: The first fixing frame includes a base, a first fixing frame, a first swing arm, a first transmission member, and a first pressure plate. The first fixing frame is located on one side of the base. The first fixing frame includes a first avoidance surface. The first avoidance surface is located on the side of the top surface of the first fixing frame facing the base and is connected to the top surface of the first pressure plate. The first swing arm includes a first rotating portion, a first sliding portion, and a first transmission portion, wherein the first rotating portion is rotatably connected to the base, the first sliding portion is fixedly connected to the first rotating portion and slidably connected to the first fixing frame, and the first transmission portion is fixedly connected to the first sliding portion; The first pressing plate is rotatably connected to the first fixing frame, the first pressing plate includes a first plate body and a second transmission part, and the second transmission part is fixedly connected to the first plate body; The first transmission member is mounted on the first fixing frame and is rotatable relative to the first fixing frame, and is in contact between the first transmission portion and the second transmission portion; When the foldable mechanism is in an inwardly folded state, the first fixing frame is located on the top side of the base, the top surface of the first plate intersects with the top surface of the first fixing frame, and the bottom surface of the first plate contacts the first avoidance surface; When the foldable mechanism is in a flattened state, the top surface of the first plate is flush with the top surface of the first fixing frame, and the bottom surface of the first plate is spaced apart from and opposite to the first avoidance surface; During the process of switching the foldable mechanism from the inwardly folded state to the flattened state, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first transmission member to rotate relative to the first fixed frame, the first transmission member drives the second transmission portion to rotate relative to the first fixed frame, and the second transmission portion drives the first plate to rotate relative to the first fixed frame.

2. The foldable mechanism according to claim 1, wherein: When the foldable mechanism is in the outward folded state, the first fixing frame is located on the bottom side of the base, the top surface of the first plate is flush with the top surface of the first fixing frame, and the bottom surface of the first plate is spaced apart from and opposite to the first avoidance surface.

3. The foldable mechanism according to claim 2, wherein: When the foldable mechanism switches between the flattened state and the outwardly folded state, the first sliding portion drives the first transmission portion to slide relative to the first fixing frame, and the second transmission portion and the first plate are fixed relative to the first fixing frame.

4. The foldable mechanism according to any one of claims 1 to 3, characterized in that: The process of the foldable mechanism switching from the inwardly folded state to the flattened state includes a first process and a second process; In the first process, the first sliding part drives the first transmission part to slide relative to the first fixing frame, and the second transmission part and the first plate are fixed relative to the first fixing frame; In the second process, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first transmission member to rotate relative to the first fixed frame, the first transmission member drives the second transmission portion to rotate relative to the first fixed frame, and the second transmission portion drives the first plate to rotate relative to the first fixed frame.

5. The foldable mechanism according to claim 4, wherein: The first transmission part is provided with a plurality of first teeth, and the plurality of first teeth are all provided on a surface of the first transmission part facing away from the first fixing frame, and the plurality of first teeth are arranged in sequence along the sliding direction of the first transmission part relative to the first fixing frame; The second transmission part is provided with a plurality of second teeth, and the plurality of second teeth are all provided on a surface of the second transmission part facing away from the first plate, and the plurality of second teeth are arranged sequentially around the direction of the rotation center of the second transmission part relative to the first fixing frame; The first transmission member includes a first gear, a first intermittent portion, a second intermittent portion, a second gear, a third gear and a fourth gear. The first gear, the first intermittent portion, the second intermittent portion, the second gear, the third gear and the fourth gear are all mounted on the first fixing frame and can rotate relative to the first fixing frame. The first gear is engaged with the first tooth, the first intermittent portion is fixedly connected to the first gear, the second intermittent portion abuts against the first intermittent portion, the second gear is fixedly connected to the second intermittent portion, the third gear is engaged with the second gear, and the fourth gear is fixedly connected to the third gear and is engaged with the second tooth. During the first process, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first gear to rotate relative to the first fixed frame, the first gear drives the first intermittent portion to rotate relative to the first fixed frame, and the second intermittent portion, the second gear, the third gear, and the fourth gear are all fixed relative to the first fixed frame; In the second process, the first sliding portion drives the first transmission portion to slide relative to the first fixed frame, the first transmission portion drives the first gear to rotate relative to the first fixed frame, the first gear drives the first intermittent portion to rotate relative to the first fixed frame, the first intermittent portion drives the second intermittent portion to rotate relative to the first fixed frame, the second intermittent portion drives the second gear to rotate relative to the first fixed frame, the second gear drives the third gear to rotate relative to the first fixed frame, the third gear drives the fourth gear to rotate relative to the first fixed frame, and the fourth gear drives the second transmission portion to rotate relative to the first fixed frame.

6. The foldable mechanism according to claim 5, characterized in that: The meshing teeth of the third gear are arranged on a side of the third gear facing the second gear; And / or, the meshing teeth of the fourth gear are arranged on a side of the fourth gear facing the second gear.

7. The foldable mechanism according to claim 5 or 6, characterized in that: The first plate body is provided with a first avoidance hole, the first avoidance hole penetrates the first plate body along the thickness direction of the first plate body, and the second transmission part extends into the first avoidance hole; The first gear and the first intermittent portion are inserted into the first avoidance hole.

8. The foldable mechanism according to any one of claims 5 to 7, characterized in that: During the first process, the first intermittent portion rotates relative to the first fixing frame by a first angle; In the second process, the second thumbwheel rotates relative to the first fixing frame by a second angle, and the sum of the first angle and the second angle is equal to 180 degrees.

9. The foldable mechanism according to any one of claims 1 to 8, characterized in that: When the foldable mechanism is in a flattened state, an angle between the bottom surface of the first plate and the first avoidance surface is a first angle, and the first angle is greater than 0 degrees and less than 90 degrees.

10. The foldable mechanism according to any one of claims 1 to 9, characterized in that: The foldable mechanism further includes a first assembly part, which is mounted on the first fixing frame and fixed relative to the first fixing frame. The first transmission member is mounted on the first assembly part and can rotate relative to the first assembly part.

11. The foldable mechanism according to any one of claims 1 to 10, characterized in that: The first fixing frame is provided with a first sliding groove and a first assembly groove, the opening of the first sliding groove is located on the surface of the first fixing frame facing the base, the opening of the first assembly groove is located on the top surface of the first fixing frame, and the first assembly groove is connected to the first sliding groove; The first rotating part is installed in the first sliding groove and can slide relative to the first fixing frame in the first sliding groove. The first transmission part is located in the first assembly groove and can slide relative to the first fixing frame in the first assembly groove. The first transmission member is installed in the first assembly groove and can rotate relative to the first fixing frame in the first assembly groove.

12. The foldable mechanism according to any one of claims 1 to 11, characterized in that: The first rotating part includes a first rotating cylinder and a second rotating cylinder. The first rotating cylinder is installed on the base and can rotate relative to the base. The second rotating cylinder is installed on the base and can rotate relative to the first rotating cylinder. The rotation center of the second rotating cylinder relative to the first rotating cylinder coincides with the rotation center of the first rotating cylinder relative to the base.

13. The foldable mechanism according to any one of claims 1 to 12, characterized in that: The foldable mechanism further includes a second fixing frame, a second swing arm and a second pressing plate; The second fixing frame is located on one side of the base; The second swing arm includes a second rotating portion and a second sliding portion, the second rotating portion is rotatably connected to the base, the second sliding portion is fixedly connected to the second rotating portion, and is slidably connected to the second fixing bracket; The second pressing plate is rotatably connected to the second fixing frame; When the foldable mechanism is in the inward folded state, the second fixing frame is located on the top side of the base, and is spaced apart from and opposite to the first fixing frame, the second pressure plate is spaced apart from and opposite to the first pressure plate, the second swing arm and the first swing arm are folded relative to each other, and the base, the first fixing frame, the first pressure plate, the first swing arm, the second fixing frame, the second pressure plate and the second swing arm enclose an avoidance space, and the cross-section of the avoidance space is in the shape of a water droplet.

14. The foldable mechanism according to claim 13, wherein: The second fixing frame includes a second avoidance surface, which is located on a side of the top surface of the second fixing frame facing the base and is connected to the top surface of the second pressing plate; The second swing arm further includes a third transmission portion, and the second transmission portion is fixedly connected to the second sliding portion; The second pressing plate includes a second plate body and a fourth transmission part, and the fourth transmission part is fixedly connected to the second plate body; The foldable mechanism further includes a second transmission member, which is mounted on the second fixing frame and can rotate relative to the second fixing frame and abuts between the third transmission part and the fourth transmission part; When the foldable mechanism is in the inwardly folded state, the top surface of the second plate body intersects with the top surface of the second fixing frame, and the bottom surface of the second plate body contacts the second avoidance surface; When the foldable mechanism is in the flattened state, the top surface of the second fixing frame is flush with the top surface of the first fixing frame, the top surface of the second plate is flush with the top surface of the second fixing frame, and the bottom surface of the second plate is spaced apart from and opposite to the second avoidance surface; During the process of switching the foldable mechanism from the inwardly folded state to the flattened state, the second sliding portion drives the third transmission portion to slide relative to the second fixed frame, the third transmission portion drives the second transmission member to rotate relative to the second fixed frame, the second transmission member drives the fourth transmission portion to rotate relative to the second fixed frame, and the fourth transmission portion drives the second plate to rotate relative to the second fixed frame.

15. 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 14, wherein the foldable mechanism is connected between the first shell and the second shell.

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