Rotating mechanism and foldable electronic device

Abstract

The application provides a rotating mechanism and a foldable electronic device. The foldable electronic device comprises a rotating mechanism, the rotating mechanism comprising a shaft base, a synchronous rotating module and a damping module; the synchronous rotating module comprising a mounting base, a first swing arm, a second swing arm and a transmission component, the synchronous rotating module being fixed to the shaft base through the mounting base, the first swing arm and the second swing arm being oppositely arranged on two sides of the mounting base in a second direction and being both hinged to the mounting base, the hinge axes of the first swing arm and the second swing arm both extending along a first direction, the transmission component being mounted to the mounting base and cooperating with the first swing arm and the second swing arm respectively; the damping module comprising a fixing base and a force applying piece, the damping module being fixed to the shaft base through the fixing base, the force applying piece being mounted to the fixing base and being used for providing a damping force for the rotation of the first swing arm and the second swing arm relative to the mounting base. In the foldable electronic device provided by the application, the dismounting process of the rotating mechanism is facilitated.

Description

Technical Field

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

[0002] With the rapid technological advancements in electronic devices and the ever-growing consumer demand, foldable electronic devices, such as foldable screen phones, have become a hot trend in the future development of electronic devices. To achieve the folding and unfolding of foldable electronic devices, a rotating mechanism is typically incorporated, allowing for the relative rotation of the two sides of the device's casing. However, the complex structure and numerous components of this rotating mechanism in foldable electronic devices lead to a complex assembly process with many steps. Furthermore, the performance of the rotating mechanism can only be tested after the entire assembly is complete. If parts are not properly assembled or are defective, resulting in unsuccessful testing, the rotating mechanism must be disassembled and reassembled, or a new structure must be installed. This complicates the entire assembly process of foldable electronic devices, significantly hindering their production efficiency. Summary of the Invention

[0003] This application provides a rotating mechanism and a foldable electronic device, which can simplify the assembly process.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a foldable electronic device, comprising: a rotating mechanism, the rotating mechanism including a bearing, a synchronous rotating module, and a damping module; the synchronous rotating module and the damping module are arranged in a first direction; the synchronous rotating module includes a mounting base, a first swing arm, a second swing arm, and a transmission component, the synchronous rotating module being fixed to the bearing by means of the mounting base, the first swing arm and the second swing arm being disposed opposite to each other on both sides of the mounting base in a second direction, and both being hinged to the mounting base, the hinge axes of the first swing arm and the second swing arm extending along the first direction, the transmission component being mounted on the mounting base, and the transmission component cooperating with the first swing arm and the second swing arm respectively; the damping module includes a fixed base and a force-applying component, the damping module being fixed to the bearing by means of the fixed base, the force-applying component being mounted on the fixed base, and the force-applying component being used to provide damping force for the rotation of the first swing arm and the second swing arm relative to the mounting base.

[0006] In the foldable electronic device provided in this application embodiment, by setting a synchronous rotation module and a damping module, the synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component. The synchronous rotation module is fixed to the bearing as a whole by means of the mounting base. The damping module includes a fixed base and a force-applying component. The damping module is fixed to the bearing as a whole by means of the fixed base. Thus, the synchronous rotation module and the damping module can be assembled with the bearing as a whole, which helps to simplify the assembly process. Furthermore, the synchronous rotation module is modularized as a whole, so the synchronicity of the relative rotation of the first swing arm and the second swing arm in the synchronous rotation module can be tested before the synchronous rotation module is assembled to the bearing, avoiding the problem that the synchronicity of the relative rotation of the first swing arm and the second swing arm can only be tested after the synchronous rotation module is assembled to the bearing. Meanwhile, the damping module, as a whole, adopts a modular design. This allows for testing of the force exerted by the force-applying components within the damping module on the first and second swing arms of the synchronous rotation module before the damping module is assembled onto the bearing. This avoids the problem of having to test the force exerted by the force-applying components in the damping module after the rotation mechanism is fully assembled. Even if the testing of the damping module and the synchronous rotation module is unsuccessful, there is no need to disassemble the entire rotation mechanism, which simplifies the disassembly and assembly process of the rotation mechanism and improves its production efficiency.

[0007] In some embodiments of the first aspect of this application, the transmission component is a transmission slider, which is slidable relative to the mounting base in a first direction. When the first swing arm rotates, the first swing arm drives the transmission slider to slide, and the sliding of the transmission slider drives the second swing arm to rotate synchronously.

[0008] In some embodiments of the first aspect of this application, a first helical rib and a second helical rib are provided on the outer peripheral surface of the transmission slider, and the first helical rib and the second helical rib have opposite directions of rotation; the first swing arm is provided with a first transmission part, and the first transmission part is provided with a first helical groove, which slides in engagement with the first helical rib; the second swing arm is provided with a second transmission part, and the second transmission part is provided with a second helical groove, which slides in engagement with the second helical rib. This synchronous rotation design achieves synchronous counter-rotation of the first swing arm and the second swing arm, while having a simple structure, being easy to manufacture, and eliminating the need for a separate gear transmission structure, which helps to save material costs and simplify the processing technology.

[0009] In some embodiments of the first aspect of this application, the mounting base has a mounting groove, and the transmission slider is slidably disposed within the mounting groove. This arrangement allows for a more compact structure of the synchronous rotation module, reducing its volume, which in turn further contributes to the compactness of the rotation mechanism and reduces its overall volume.

[0010] In some embodiments of the first aspect of this application, the outer peripheral surface of the transmission slider has a first arcuate surface facing the shaft seat, the first arcuate surface arching towards the shaft seat, and both a first helical rib and a second helical rib are formed on the first arcuate surface; a portion of the circumferential groove wall of the mounting groove is recessed towards the shaft seat to form a first groove and a second groove respectively, the first arcuate surface and the first groove defining a first arcuate sliding cavity, the first arcuate surface and the second groove defining a second arcuate sliding cavity, the first transmission part being arcuate and slidingly fitted into the first arcuate sliding cavity, the second transmission part being arcuate and slidingly fitted into the second arcuate sliding cavity. With this design, the fit between the first transmission part and the first arcuate sliding cavity, as well as the fit between the second transmission part and the second arcuate sliding cavity, can guide the fit between the first transmission part and the transmission slider, and the fit between the second transmission part and the transmission slider, improving the reliability of the fit among the three, and can also avoid interference with the rotation of the first and second swing arms relative to the mounting seat.

[0011] In some embodiments of the first aspect of this application, the synchronous rotation module further includes a limiting member, which is fixedly connected to the mounting base and abuts against the side of the transmission slider opposite to the shaft seat. This prevents the transmission slider from detaching from the mounting base, thereby improving the reliability of the transmission slider's operation.

[0012] In some embodiments of the first aspect of this application, the first groove and the second groove are arranged in a first direction, a first baffle is provided in the mounting groove, the first groove and the second groove are separated by the first baffle, and the limiting member is fixedly connected to both ends of the first baffle in the circumferential direction of the transmission slider. This facilitates the use of the limiting member to abut from the middle position of the transmission slider, improving the limiting effect on the transmission slider.

[0013] In some embodiments, the first stop rib has positioning grooves at both end faces of the transmission slider in the circumferential direction. The limiting member has a positioning part. The positioning part cooperates with the positioning groove. Thus, the cooperation between the positioning part and the positioning groove can be used to position the limiting member and the mounting base during installation.

[0014] In some embodiments, the surface of the limiting member facing the transmission slider has a stop protrusion. The surface of the transmission slider facing the limiting member has a stop groove. The stop protrusion abuts against the groove wall of the stop groove. This not only improves the cooperation effect between the limiting member and the transmission slider, but also helps to achieve a compact structure of the rotating mechanism.

[0015] In some embodiments of the first aspect of this application, the limiting member has a first notch at each end in the second direction, with one first notch corresponding to one first transmission part, and the first notch is used to avoid the corresponding first transmission part; the limiting member also has a second notch at each end in the second direction, with one second notch corresponding to one second transmission part, and the second notch is used to avoid the corresponding second transmission part. This design prevents the limiting member from interfering with the movement of the first and second transmission parts relative to the mounting base.

[0016] In some embodiments of the first aspect of this application, two guide protrusions are provided on the surface of the transmission slider away from the shaft seat. The two guide protrusions correspond one-to-one with the first notches at both ends of the limiting member in the second direction and are slidably engaged. With this design, when the transmission slider slides in the first direction, the guide protrusions can slide within the corresponding first notches, thereby guiding the sliding of the transmission slider by utilizing the cooperation between the guide protrusions and the first notches.

[0017] In some embodiments of the first aspect of this application, the mounting base has a first hinge groove, and at least one side wall of the first hinge groove in a first direction is provided with a first arc-shaped hinge groove; the first swing arm is provided with a first hinge portion, and at least one end of the first hinge portion in the first direction is provided with a first arc-shaped portion. The first hinge portion fits into the first hinge groove, and the first arc-shaped portion correspondingly fits into and is embedded in the first arc-shaped hinge groove. In this way, not only can the hinge of the first swing arm relative to the mounting base be realized, but there is also no need to provide a separate hinge shaft, resulting in a simple structure, ease of manufacturing, and compactness of the rotating mechanism structure.

[0018] For example, a first rib is formed on the side wall of the first hinge groove on the side away from the damping module in the first direction. The surface of the first rib facing the circumferential groove wall of the first hinge groove is an arc-shaped surface. The surface of the circumferential groove wall of the first hinge groove facing the first rib is also an arc-shaped surface. The first rib and the circumferential groove wall of the first hinge groove define a first arc-shaped hinge groove. Thus, the structure is simple and easy to manufacture.

[0019] For example, to further improve the hinge reliability between the first swing arm and the mounting base, the first hinge portion is arc-shaped, and the end of the arc-shaped first hinge portion away from the damping module along the first direction defines the first arc-shaped portion. The circumferential groove wall of the first hinge groove is an arc-shaped surface adapted to the first hinge portion.

[0020] In some embodiments of the first aspect of this application, the mounting base has a second hinge groove, and a second arc-shaped hinge groove is provided on at least one side wall of the second hinge groove in the first direction; the second swing arm has a second hinge portion, and at least one end of the second hinge portion in the first direction has a second arc-shaped portion, the second hinge portion is fitted into the second hinge groove, and the second arc-shaped portion is correspondingly fitted and embedded in the second arc-shaped hinge groove. In this way, not only can the second swing arm be hinged relative to the mounting base, but there is also no need to provide a separate hinge shaft, resulting in a simple structure, ease of manufacturing, and compactness of the rotating mechanism structure.

[0021] For example, a second rib is formed on the side wall of the second hinge groove on the side away from the damping module in the first direction. The surface of the second rib facing the circumferential groove wall of the second hinge groove is an arc-shaped surface, and the surface of the circumferential groove wall of the second hinge groove facing the second rib is also an arc-shaped surface. A second arc-shaped hinge groove is defined between the second rib and the circumferential groove wall of the second hinge groove.

[0022] For example, to further improve the hinge reliability between the second swing arm and the mounting base, the second hinge portion is arc-shaped, and the arc-shaped second hinge portion defines a second arc-shaped portion at one end away from the damping module along the first direction. The circumferential groove wall of the second hinge groove is an arc-shaped surface adapted to the second hinge portion.

[0023] In some embodiments of the first aspect of this application, a first swing arm is provided with a first hinge portion and a first transmission portion, which are spaced apart in a first direction. The first swing arm is hinged to a mounting base via the first hinge portion, and the first swing arm cooperates with a transmission component via the first transmission portion. A second swing arm is provided with a second hinge portion and a second transmission portion, which are spaced apart in a first direction. The second swing arm is hinged to a mounting base via the second hinge portion, and the second swing arm cooperates with a transmission component via the second transmission portion. In the first direction, the second transmission portion is located between the first transmission portion and the first hinge portion, and the second hinge portion is located on the side of the first transmission portion away from the first hinge portion. This design can fully utilize the space between the first hinge portion and the first transmission portion in the first direction, as well as the space between the second hinge portion and the second transmission portion in the first direction, thereby reducing the size of the synchronous rotation module in the first direction. This allows for reasonable optimization of the structural layout of the synchronous rotation module, achieving a compact structure.

[0024] In some embodiments of the first aspect of this application, the damping module includes: a sliding block mounted on a fixed base and slidable relative to the fixed base in a first direction, the sliding block abutting against at least one of a first swing arm and a second swing arm; a force-applying member disposed on the side of the sliding block away from the synchronous rotation module, the force-applying member typically driving the sliding block to abut against at least one of the first swing arm and the second swing arm. This design facilitates reliable engagement between the first and second swing arms and the mounting base, reduces the engagement clearance between the first hinge portion and the sidewall of the first hinge groove away from the damping module in the first direction, reduces the engagement clearance between the second hinge portion and the sidewall of the second hinge groove away from the damping module in the first direction, and improves the synchronicity of the first and second swing arms.

[0025] In some embodiments of the first aspect of this application, the first swing arm is provided with a first hinge portion, and the first swing arm is hinged to the mounting base by means of the first hinge portion. The first hinge portion is provided with a first protrusion, a first recess, and a second recess at one end adjacent to the damping module along a first direction, and the first recess and the second recess are located on both sides of the first protrusion. The sliding block is provided with a second protrusion, a third recess, and a fourth recess at one end adjacent to the synchronous rotation module along the first direction, and the third recess and the fourth recess are located on both sides of the second protrusion. The foldable electronic device has a flattened state and a folded state. In the flattened state, the first protrusion engages with the fourth recess, and the second protrusion engages with the first recess. In the folded state, the first protrusion engages with the third recess, and the second protrusion engages with the second recess.

[0026] In some embodiments of the first aspect of this application, the mounting base has a first hinge groove, the side of the first hinge groove facing the damping module is open to form an opening, and a first arc-shaped hinge groove is provided on the side wall of the first hinge groove opposite to the opening; a first arc-shaped portion is provided at the end of the first hinge portion away from the damping module, the first hinge portion is fitted into the first hinge groove, and the first arc-shaped portion is correspondingly fitted and embedded in the first arc-shaped hinge groove, and a first protrusion extends out of the first hinge groove through the opening.

[0027] In some embodiments of the first aspect of this application, the force-applying element is a compression spring, and the damping module further includes a limiting block. The limiting block is fixed to the fixing base and is located on the side of the compression spring away from the sliding block. The compression spring is connected between the sliding block and the limiting block and is in a compressed deformation state.

[0028] In some embodiments of the first aspect of this application, the damping module further includes a fixed shaft extending along a first direction and fixed to one end of the sliding block facing the limiting block. The limiting block has a through hole, through which the fixed shaft is movably inserted, and a compression spring is sleeved on the fixed shaft. This prevents the compression spring from disengaging from between the sliding block and the limiting block.

[0029] In some embodiments of the first aspect of this application, the fixed base has an installation space, and the sliding block, force-applying member, and limiting block are all fixed within the installation space. The side of the installation space facing the synchronously rotating module has an opening. Therefore, on the one hand, by providing an installation space and fixing the force-applying member and limiting block within it, the compactness of the damping module structure is improved, and the volume of the damping module is reduced. On the other hand, the open opening on the side of the installation space facing the synchronously rotating module facilitates the cooperation between the sliding block and the synchronously rotating module.

[0030] In some embodiments of the first aspect of this application, an anti-detachment rib is provided at the opening, the anti-detachment rib being used to abut against the surface of the sliding block facing the synchronously rotating module. This prevents the sliding block from detaching from the mounting space.

[0031] In some embodiments of the first aspect of this application, guide grooves are respectively provided on opposite walls of the installation space in the second direction; guide blocks are respectively provided at both ends of the sliding block in the second direction, with one guide block corresponding to one guide groove, and the corresponding guide block slidingly engaging with the guide groove. This guides the movement of the sliding block in the first direction while preventing the sliding block from detaching from the installation space.

[0032] In some embodiments of the first aspect of this application, the side of the mounting space away from the shaft seat is open, and each guide groove has a mounting port at the end away from the synchronous rotation module, extending through to the end face of the fixed seat away from the shaft seat, and the mounting port is adapted for the guide block to pass through. This facilitates the installation of the sliding block.

[0033] In some embodiments of the first aspect of this application, the side of the installation space away from the synchronous rotation module in the first direction is opened to form an installation opening, the limiting block and the fixing seat are independently molded parts, and the limiting block is assembled into the installation space through the installation opening.

[0034] In some embodiments of the first aspect of this application, the installation space is provided with pre-positioning grooves on opposite walls in the second direction, and the pre-positioning grooves communicate with the installation opening; the limiting block is provided with pre-positioning blocks at both ends in the second direction, one pre-positioning block corresponds to one pre-positioning groove, and the corresponding pre-positioning groove cooperates with the pre-positioning block. This ensures the relative positional relationship between the through hole on the limiting block and the fixed shaft, so that the fixed shaft and the through hole can be aligned during the installation of the limiting block, avoiding the problem of manual alignment of the fixed shaft and the through hole during the installation of the limiting block.

[0035] In some embodiments of the first aspect of this application, the hinge axis of the first swing arm and the hinge axis of the second swing arm are collinear. This facilitates the achievement of a compact structure for the rotating mechanism.

[0036] In some embodiments of the first aspect of this application, the foldable electronic device further includes: a first housing and a second housing, the first housing and the second housing being located on opposite sides of the bearing in a second direction, the first housing being connected to a first swing arm, and the second housing being connected to a second swing arm; a folding screen, the folding screen including a first part, a second part and a third part, the third part being located between the first part and the second part, the first part being supported and fixed to the mating surface of the first housing, the second part being supported and fixed to the mating surface of the second housing, and the third part being supported and fixed to the rotating mechanism.

[0037] Secondly, embodiments of this application provide a rotating mechanism, including a bearing seat, a synchronous rotation module, and a damping module; the synchronous rotation module and the damping module are arranged in a first direction; the synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component, the synchronous rotation module is fixed to the bearing seat by means of the mounting base, the first swing arm and the second swing arm are disposed opposite to each other on both sides of the mounting base in the second direction, and are both hinged to the mounting base, the hinge axes of the first swing arm and the second swing arm both extend along the first direction, the transmission component is mounted on the mounting base, and the transmission component cooperates with the first swing arm and the second swing arm respectively; the damping module includes a fixed base and a force-applying component, the damping module is fixed to the bearing seat by means of the fixed base, the force-applying component is mounted on the fixed base, and the force-applying component is used to provide damping force for the rotation of the first swing arm and the second swing arm relative to the mounting base.

[0038] In the rotation mechanism provided in this application embodiment, a synchronous rotation module and a damping module are provided. The synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component. The synchronous rotation module is fixed to the bearing seat as a whole by means of the mounting base. The damping module includes a fixed base and a force-applying component. The damping module is fixed to the bearing seat as a whole by means of the fixed base. Thus, the synchronous rotation module and the damping module can be assembled with the bearing seat as a whole, which helps to simplify the assembly process. Furthermore, the synchronous rotation module is modularized as a whole, so the synchronicity of the relative rotation of the first swing arm and the second swing arm in the synchronous rotation module can be tested before the synchronous rotation module is assembled to the bearing seat, avoiding the problem that the synchronicity of the relative rotation of the first swing arm and the second swing arm can only be tested after the synchronous rotation module is assembled to the bearing seat. Meanwhile, the damping module, as a whole, adopts a modular design. This allows for testing of the force exerted by the force-applying components within the damping module on the first and second swing arms of the synchronous rotation module before the damping module is assembled onto the bearing. This avoids the problem of having to test the force exerted by the force-applying components in the damping module after the rotation mechanism is fully assembled. Even if the testing of the damping module and the synchronous rotation module is unsuccessful, there is no need to disassemble the entire rotation mechanism, which simplifies the disassembly and assembly process of the rotation mechanism and improves its production efficiency.

[0039] In some embodiments of the second aspect, the transmission component is a transmission slider, which is slidable relative to the mounting base in a first direction. A first helical rib and a second helical rib are provided on the outer circumferential surface of the transmission slider, with the first and second helical ribs rotating in opposite directions. The first swing arm has a first transmission part, on which a first helical groove is provided, and the first helical groove slides in engagement with the first helical rib. The second swing arm has a second transmission part, on which a second helical groove is provided, and the second helical groove slides in engagement with the second helical rib. This synchronous rotation design achieves synchronous counter-rotation of the first and second swing arms, while maintaining a simple structure, facilitating manufacturing, and eliminating the need for a separate gear transmission structure, thus saving material costs and simplifying the manufacturing process.

[0040] In some embodiments of the second aspect, the mounting base has a mounting groove, and the transmission slider is slidably disposed within the mounting groove. The outer peripheral surface of the transmission slider has a first arcuate surface facing the shaft seat, and the first arcuate surface arches towards the shaft seat. A first helical rib and a second helical rib are both formed on the first arcuate surface. A portion of the circumferential groove wall of the mounting groove is recessed towards the shaft seat to form a first groove and a second groove, respectively. The first arcuate surface and the first groove define a first arcuate sliding cavity, and the first arcuate surface and the second groove define a second arcuate sliding cavity. The first transmission part is arcuate and slides in the first arcuate sliding cavity, and the second transmission part is arcuate and slides in the second arcuate sliding cavity. With this design, the cooperation between the first transmission part and the first arcuate sliding cavity, as well as the cooperation between the second transmission part and the second arcuate sliding cavity, can guide the cooperation between the first transmission part and the transmission slider, and the cooperation between the second transmission part and the transmission slider, improving the reliability of the cooperation among the three. On the other hand, it can also avoid interference with the rotation of the first swing arm and the second swing arm relative to the mounting base.

[0041] In some embodiments of the second aspect, the first swing arm is provided with a first hinge portion and a first transmission portion, which are spaced apart in a first direction. The first swing arm is hinged to the mounting base via the first hinge portion and cooperates with the transmission component via the first transmission portion. The second swing arm is provided with a second hinge portion and a second transmission portion, which are spaced apart in a first direction. The second swing arm is hinged to the mounting base via the second hinge portion and cooperates with the transmission component via the second transmission portion. In the first direction, the second transmission portion is located between the first transmission portion and the first hinge portion, and the second hinge portion is located on the side of the first transmission portion away from the first hinge portion. This design can fully utilize the space between the first hinge portion and the first transmission portion in the first direction, as well as the space between the second hinge portion and the second transmission portion in the first direction, thereby reducing the size of the synchronous rotation module in the first direction. This allows for reasonable optimization of the structural layout of the synchronous rotation module and achieves a compact structure.

[0042] In some embodiments of the second aspect, the first swing arm is provided with a first hinge portion, and the first swing arm is hinged to the mounting base by means of the first hinge portion. The first hinge portion is provided with a first protrusion, a first recess, and a second recess at one end adjacent to the damping module along a first direction. The first recess and the second recess are located on both sides of the first protrusion. The damping module includes: a sliding block, which is mounted on a fixed base and is slidable relative to the fixed base in a first direction. A force-applying member is used to drive the sliding block to slide towards the synchronous rotation module. The sliding block is provided with a second protrusion, a third recess, and a fourth recess at one end adjacent to the synchronous rotation module along the first direction. The third recess and the fourth recess are located on both sides of the second protrusion. The rotation mechanism has a flattened state and a folded state. In the flattened state, the first protrusion engages with the fourth recess, and the second protrusion engages with the first recess. In the folded state, the first protrusion engages with the third recess, and the second protrusion engages with the second recess. Attached Figure Description

[0043] Figure 1 A perspective view of a foldable electronic device provided in some embodiments of this application, wherein the foldable electronic device is in a flattened state;

[0044] Figure 2 for Figure 1 The diagram shows the structure of the foldable electronic device when the foldable screen is in the folded state.

[0045] Figure 3 for Figure 1 A perspective view of the support device in the electronic device shown.

[0046] Figure 4 An exploded view of the rotating mechanism provided in some embodiments of this application;

[0047] Figure 5 According to Figure 4 A 3D view of the synchronous rotation module shown;

[0048] Figure 6 According to Figure 4 A schematic diagram showing the assembly of the first door panel, the second door panel, and the first rotating assembly;

[0049] Figure 7 According to Figure 6 The enlarged view of the circled part at point C of the structure shown;

[0050] Figure 8 According to Figure 6 An exploded view of the synchronous rotation module shown;

[0051] Figure 9 According to Figure 8A schematic diagram showing the engagement of the mounting base, the first swing arm, and the second swing arm;

[0052] Figure 10 According to Figure 8 A perspective view of the transmission components shown.

[0053] Figure 11 According to Figure 8 The assembly diagram of the mounting base, transmission slider, and limiting component shown;

[0054] Figure 12 According to Figure 11 An exploded view of the mounting base, transmission slider, and limiting component shown.

[0055] Figure 13 According to Figure 4 A three-dimensional view of the damping module shown in the figure;

[0056] Figure 14 According to Figure 4 An exploded view of the damping module shown in the diagram;

[0057] Figure 15 According to Figure 4 The diagram shows the connection between the synchronous rotation module and the damping module.

[0058] Figure 16 According to Figure 14 An enlarged view of the portion circled at point D in the damping module 22 shown.

[0059] Figure label:

[0060] 1000 foldable electronic devices;

[0061] Support device 100;

[0062] First housing 20; First middle frame 201; First back cover 202;

[0063] Second housing 30; Second middle frame 301; Second back cover 302;

[0064] Rotating mechanism 10; bearing seat 1; accommodating space 1a; first positioning post 11; second positioning post 12; first limiting rib 13; second limiting rib 14; base plate 15; first side plate 16; second side plate 17; first rotating assembly 2;

[0065] Synchronous rotation module 21; first swing arm 211; first positioning protrusion 2111; first transmission part 2112; first spiral groove 21121; first hinge part 2113; first arc-shaped part 21131; first protrusion 21132; first concave part 21133; second concave part 21134; second swing arm 212; second positioning protrusion 2121; second transmission part 2122; second spiral groove 21221; second hinge part 2123; second arc-shaped part 21231; transmission Moving component 213; First spiral rib 2131; Second spiral rib 2132; First arc-shaped surface 2133; Guide protrusion 2134; Stop groove 2135; Limiting component 214; First notch 2141; Second notch 2142; Positioning part 2143; Stop protrusion 2144; Mounting base 215; First positioning hole 215a; First hinge groove 215b; First rib 215b1; First arc-shaped hinge groove 215b2; Second hinge groove 215c; Second rib 215c1; second arc-shaped hinge groove 215c2; mounting groove 215d; second arc-shaped surface 215d1; first groove 215d11; first arc-shaped sliding cavity 215d111; second groove 215d12; second arc-shaped sliding cavity 215d121; first stop rib 215d2; positioning groove 215d21; damping module 22; fixing base 221; second positioning hole 221a; mounting space 221b; mounting opening 221b1; open opening 221b2; guide 221b3; Assembly port 221b4; Pre-positioning groove 221b5; Anti-detachment rib 2211; Force-applying component 222; Sliding block 223; Second protrusion 2231; Third recess 2232; Fourth recess 2233; Guide block 2234; Limiting block 224; Through hole 2241; Pre-positioning block 2242; Fixed shaft 225; First door panel 3; First mating protrusion 31; First positioning slot 311; Second door panel 4; Second mating protrusion 41; Second rotating assembly 6;

[0066] Foldable screen 200; Part 1 201; Part 2 202; Part 3 203. Detailed Implementation

[0067] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0068] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0069] In the description of the embodiments of this application, the term "at least one" means one or more, and "more than one" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of a single item or a plurality of items. For example, at least one of a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, and c can be a single item or multiple items.

[0070] In the description of the embodiments of this application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0071] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Fixed connection" refers to a connection where the relative positional relationship remains unchanged after the connection.

[0072] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of this application, such as "inner," "outer," "upper," "lower," "front," "rear," "left," and "right," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this application, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0073] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0074] In related technologies, foldable electronic devices typically include a rotating mechanism and two housings. The rotating mechanism comprises a first swing arm, a second swing arm, a bearing, and a spring. The first and second swing arms are hinged to opposite sides of the bearing. Furthermore, the first and second swing arms are connected one-to-one to the two housings. Thus, the relative rotation of the two housings is achieved by the rotation of the first and second swing arms relative to the bearing, thereby enabling the folding and unfolding of the foldable electronic device. In the rotating mechanism, four meshing spur gears are typically used as transmission components to drive the first and second swing arms to rotate synchronously. Simultaneously, a spring applies an axial force to the gear shaft as a damping force during the rotation of the two housings, ensuring the foldable electronic device remains in a folded or unfolded state. However, in foldable electronic devices, the complex structure and numerous components of the rotating mechanism lead to a complex assembly process and multiple assembly steps. Furthermore, in foldable electronic devices, structures such as the first and second swing arms, spur gears, and springs all need to be fixed to the bearings and the rotation mechanism assembled before the synchronization of the first and second swing arms and the magnitude of the damping force provided by the springs can be tested. If the assembly of parts is substandard or the parts are defective, resulting in unsuccessful testing, the entire rotation mechanism needs to be disassembled for reassembly or a new structure needs to be replaced. This complicates the assembly process of foldable electronic devices and significantly restricts their production efficiency.

[0075] To address the aforementioned technical problems, the inventors of this application modified the design approach, redesigning the structure of the rotating mechanism from the perspective of modularizing different components. Specifically, in the foldable electronic device provided in this application embodiment, a synchronous rotation module and a damping module are provided. The synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component. The synchronous rotation module is fixed to the bearing seat as a whole by means of the mounting base. The damping module includes a fixed base and a force-applying component. The damping module is fixed to the bearing seat as a whole by means of the fixed base. Thus, the synchronous rotation module and the damping module can be assembled with the bearing seat as a whole, which simplifies the assembly process. Furthermore, the synchronous rotation module is modularized as a whole, allowing the synchronicity of the relative rotation of the first and second swing arms in the synchronous rotation module to be tested before assembling the synchronous rotation module onto the bearing seat, avoiding the problem of having to assemble the synchronous rotation module onto the bearing seat before testing the synchronicity of the relative rotation of the first and second swing arms. Meanwhile, the damping module, as a whole, adopts a modular design. This allows for testing of the force exerted by the force-applying components within the damping module on the first and second swing arms of the synchronous rotation module before the damping module is assembled onto the bearing. This avoids the problem of having to test the force exerted by the force-applying components in the damping module after the rotation mechanism is fully assembled. Even if the testing of the damping module and the synchronous rotation module is unsuccessful, there is no need to disassemble the entire rotation mechanism, which simplifies the disassembly and assembly process of the rotation mechanism and improves its production efficiency.

[0076] The structure of the foldable electronic device according to the embodiments of this application will be described in detail below.

[0077] This application provides a foldable electronic device. The foldable electronic device may include various electronic devices having a foldable screen and capable of changing the unfolded or folded shape of the screen and itself. Under different usage requirements, the foldable electronic device can be unfolded into an unfolded state or folded into a folded state.

[0078] Specifically, the foldable electronic device can be, but is not limited to, a mobile phone, tablet computer, laptop computer, e-book reader, camera, wearable device, home electronic device, etc. For ease of understanding, the foldable electronic device in the embodiments of this application is described using a foldable screen mobile phone as an example.

[0079] Please see Figure 1 , Figure 1 This is a perspective view of a foldable electronic device 1000 provided in some embodiments of this application, wherein the foldable electronic device 1000 is in a flattened state. The foldable electronic device 1000 includes a foldable screen 200 and a support device 100.

[0080] Understandable, Figure 1 The electronic device is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Restrictions.

[0081] The foldable screen 200 is used to display images, videos, etc. The foldable screen 200 can be folded into a first part 201 and a second part 202. The foldable screen 200 also includes a third part 203 located between the first part 201 and the second part 202. At least the third part 203 of the foldable screen 200 is made of a flexible material. The first part 201 and the second part 202 can be made of flexible materials, rigid materials, or a combination of both; no specific limitations are made here.

[0082] Specifically, the foldable screen 200 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (MOLED) screen, a quantum dot light-emitting diode (QLED) screen, a liquid crystal display (LCD) screen, etc.

[0083] The foldable screen 200 can switch between a flattened and a folded state. When the foldable screen 200 is in the flattened state, as... Figure 1 As shown, the first part 201, the second part 202, and the third part 203 are arranged on the same plane and face the same direction. In this state, a large-screen display can be achieved, providing users with richer information and a better user experience.

[0084] Please see Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the foldable electronic device 1000 when the foldable screen 200 is in the folded state. When the foldable screen 200 is in the folded state, the third part 203 is in a bent state, and the first part 201 ( Figure 2 (not shown in the image) and Part 202 ( Figure 2 (Not shown in the image). In this state, the foldable screen 200 is invisible to the user, and the support device 100 protects the foldable screen 200 from being scratched by hard objects. Simultaneously, in this state, the size of the foldable electronic device 1000 can be reduced, facilitating its storage. At this time, the foldable electronic device 1000 is an electronic device with the foldable screen 200 folded inwards, i.e., an inward-folding electronic device.

[0085] In other examples, foldable electronic devices can also be outward-folding electronic devices with an outward-folding screen. For outward-folding electronic devices, in the folded state, the third part is in a bent state, the first and second parts are stacked and spaced apart, and the support device is located between the first and second parts, with the folding screen located outside the support device.

[0086] The support device 100 supports the foldable screen 200 and allows the foldable screen 200 to switch between a flattened state and a folded state. See also... Figure 3 , Figure 3 for Figure 1 The diagram shows a perspective view of the support device 100 in the electronic device. In this embodiment, the support device 100 includes a first housing 20, a second housing 30, and a rotation mechanism 10.

[0087] Understandable Figure 3 The support device 100 is shown only schematically, and the actual shape, size, position, and construction of these components are not subject to change. Figure 3 Restrictions.

[0088] The first housing 20 is used for fixing and supporting. Figure 1 The first part 201 of the foldable screen 200. Specifically, the first housing 20 has a bonding surface M1, and the first housing 20 is fixed and supported by the bonding surface M1. Figure 1 The first part 201 of the foldable screen 200. Exemplarily, the connection between the bonding surface M1 and the first part 201 includes, but is not limited to, adhesive.

[0089] The second housing 30 is used for fixing and supporting. Figure 1 The second part 202 of the foldable screen 200. Specifically, the second housing 30 has a bonding surface M2, and the second housing 30 is fixed and supported by the bonding surface M2. Figure 1 The second part 202 of the foldable screen 200. Exemplarily, the connection between the bonding surface M2 and the second part 202 includes, but is not limited to, adhesive.

[0090] The first housing 20 has a first receiving cavity (not shown in the figure) formed inside. The second housing 30 has a second receiving cavity (not shown in the figure) formed inside. The first and second receiving cavities are used to accommodate electronic components such as the motherboard, battery, camera module, speaker, and earpiece of the foldable electronic device 1000. Of course, it is understood that in other examples, the receiving cavity for accommodating electronic components such as the motherboard, battery, camera module, speaker, and earpiece of the foldable electronic device 1000 may be formed only in one of the first housing 20 and the second housing 30.

[0091] The first housing 20 can be a single structural unit or assembled from multiple parts. Similarly, the second housing 30 can be a single structural unit or assembled from multiple parts. In some embodiments, please refer to... Figure 3 The first housing 20 includes a first middle frame 201 and a first back cover 202. A mating surface M1 is located on the first middle frame 201. The first back cover 202 is fixed to the side of the first middle frame 201 opposite to the mating surface M1. A first receiving cavity is formed between the first middle frame 201 and the first back cover 202. The second housing 30 includes a second middle frame 301 and a second back cover 302. A mating surface M2 is located on the second middle frame 301. The second back cover 302 is fixed to the side of the second middle frame 301 opposite to the mating surface M2. A second receiving cavity is formed between the second middle frame 301 and the second back cover 302.

[0092] Please continue reading. Figure 3 The rotating mechanism 10 has a contact surface M3. The rotating mechanism 10 can support the third part 203 of the foldable screen 200 via the contact surface M3. The rotating mechanism 10 is connected between the first housing 20 and the second housing 30, which are configured to be rotatably connected via the rotating mechanism 10, thereby enabling relative folding or flattening of the first housing 20 and the second housing 30, and thus enabling the folding or flattening of the foldable screen 200. In some embodiments, the rotating mechanism 10 is connected between the first middle frame 201 of the first housing 20 and the second middle frame 301 of the second housing 30. In other embodiments, the rotating mechanism 10 may also be connected between the first back cover 202 of the first housing 20 and the second back cover 302 of the second housing 30.

[0093] Specifically, in the unfolded state, the mating surfaces M1 of the first housing 20, M2 of the second housing 30, and M3 of the rotating mechanism 10 are coplanar and face the same direction. This reliably supports the folding screen 200 and ensures its flatness. In the folded state, the first housing 20 and the second housing 30 are stacked and spaced apart, with the mating surfaces M1 of the first housing 20 and M2 of the second housing 30 facing each other, so that the folding screen 200 can be hidden between the first housing 20 and the second housing 30, thereby protecting the folding screen 200.

[0094] The foldable electronic device 1000 provided in this application embodiment can switch between a flattened state and a folded state. When a user uses the foldable electronic device 1000 to browse web pages, access information, watch videos, play games, etc., the foldable electronic device 1000 can be switched from the folded state to the flattened state. Specifically, the first housing 20 and the second housing 30 can each be rotated 90° in opposite directions, so that the first housing 20 and the second housing 30 form a 180° angle. This enables a large-screen display, providing users with richer information and a better user experience. When the user finishes using the foldable electronic device 1000, the foldable electronic device 1000 can be switched from the flattened state to the folded state. Specifically, the first housing 20 and the second housing 30 can each be rotated 90° in a direction closer to each other, so that the first housing 20 and the second housing 30 form a 0° angle. This reduces the size of the foldable electronic device 1000, making it easier to store. In the folded state, the foldable screen 200 is invisible to the user, preventing it from being scratched by hard objects.

[0095] Please see Figure 4 , Figure 4 This is an exploded view of the rotating mechanism 10 provided in some embodiments of this application. In this embodiment, the rotating mechanism 10 includes a first door panel 3, a second door panel 4, a bearing seat 1, and a first rotating assembly 2.

[0096] Figure 4 The diagram only schematically illustrates some of the components included in the rotating mechanism 10; the actual shape, size, position, and construction of these components are not subject to change. Figure 4 Restrictions.

[0097] The first door panel 3 is used to fix (connect) with the first housing 20. Figure 3 Specifically, the first door panel 3 is used for fixed connection with the first middle frame 201. For example, the first door panel 3 can be fixedly connected to the first middle frame 201 by means of adhesive, snap-fit, welding, or screw connection. The first door panel 3 is rectangular flat. A portion of the contact surface M3 of the rotating mechanism 10 is located on the first door panel 3.

[0098] The second door panel 4 is used to fix (connect) with the second housing 30. Figure 3 Specifically, the second door panel 4 is used for fixed connection with the second middle frame 301. For example, the second door panel 4 can be fixedly connected to the first middle frame 201 by means of adhesive, snap-fit, welding, or screw connection. The second door panel 4 is in the shape of a rectangular flat plate. A portion of the contact surface M3 of the rotating mechanism 10 is located on the second door panel 4.

[0099] The bearing seat 1 is used to fix the first rotating assembly 2.

[0100] For ease of description in the following embodiments, an XYZ coordinate system is established for the bearing 1. Specifically, the length direction of the bearing 1 is defined as the Y-axis direction (i.e., the first direction), which is the extension direction of the rotation axis of the first housing 20 and the second housing 30. The thickness direction of the bearing 1 is defined as the Z-axis direction, and the direction perpendicular to both the Y-axis and Z-axis directions is defined as the X-axis direction (i.e., the second direction). It is understood that the coordinate system setting of the bearing 1 can be flexibly set according to actual needs, and no specific limitation is made here.

[0101] Specifically, to facilitate the fixing of the first rotating component 2, the bearing seat 1 has a receiving space 1a, in which a portion of the first rotating component 2 is accommodated. In this way, the components of the first rotating component 2 can be hidden inside the bearing seat 1, which can improve the aesthetic appearance of the foldable electronic device 1000.

[0102] To form a receiving space 1a on the bearing seat 1, the bearing seat 1 includes a base plate 15, two first side plates 16, and two second side plates 17. Exemplarily, the base plate 15 is a rectangular flat plate. The base plate 15 extends in the Y-axis direction. The two first side plates 16 are respectively disposed at both ends of the base plate 15 in the X-axis direction. Exemplarily, the two first side plates 16 are formed in an arc shape, and the center lines of the two first side plates 16 extend along the Y-axis direction; for example, the two first side plates 16 share a common center line, or the center lines of the two first side plates 16 are parallel. Of course, it is understood that in other examples, the first side plates 16 may also be formed in a non-arc shape, for example, the first side plates 16 may be formed in a rectangular or irregular shape. The two second side plates 17 are respectively disposed at both ends of the base plate 15 in the Y-axis direction, and each second side plate 17 is connected to one of the two first side plates 16 at its two ends in the X-axis direction. The base plate 15, the two first side plates 16, and the two second side plates 17 form a receiving space 1a that opens to one side facing the folding screen 200. The open side of the receiving space 1a facilitates the installation of the first rotating assembly 2.

[0103] It should be noted that the "center line" of the arc-shaped component A mentioned in this article refers to the central axis of the cylinder in which the arc-shaped component A is located.

[0104] The first rotating component 2 can be one or more. Figure 4 In the specific example given, there is one first rotating component 2. This should not be considered a special limitation on this application. In other examples, when there are multiple first rotating components 2, there may be two, three, or four first rotating components 2, and the multiple first rotating components 2 are spaced apart in the Y-axis direction.

[0105] The first rotating component 2 can realize the synchronous relative rotation of the first housing 20 and the second housing 30, and provide damping force for the relative rotation of the first housing 20 and the second housing 30.

[0106] Please continue reading. Figure 4 The first rotating component 2 includes a synchronous rotating module 21 and a damping module 22. The synchronous rotating module 21 and the damping module 22 are arranged in the Y-axis direction.

[0107] Please see Figure 5 , Figure 5 According to Figure 4 The diagram shows a perspective view of the synchronous rotation module 21. The synchronous rotation module 21 includes a mounting base 215, a first swing arm 211, a second swing arm 212, a transmission component 213, and a limiting component 214.

[0108] Understandable, Figure 5 The synchronous rotation module 21 is shown only schematically, and the actual shape, size, position, and construction of these components are not subject to change. Figure 5 Restrictions.

[0109] The synchronous rotation module 21 is fixed to the bearing 1 by means of the mounting base 215. Specifically, other components of the synchronous rotation module 21, such as the first swing arm 211, the second swing arm 212, the transmission component 213, and the limiting component 214, except for the mounting base 215, can be installed on the mounting base 215 first. Then, through the assembly between the mounting base 215 and the bearing 1, the installation of each component of the entire synchronous rotation module 21 to the bearing 1 can be realized. In this way, compared with the sequential assembly of each component of the synchronous rotation module 21 onto the bearing 1, the assembly process of the rotation mechanism 10 is simplified. During the assembly of the synchronous rotation module 21, it is possible to know whether the assembly of each component is qualified. Furthermore, after the synchronous rotation module 21 is assembled, the synchronization of the first swing arm 211 and the second swing arm 212 in the synchronous rotation module 21 can be tested, which greatly facilitates the assembly and testing of the rotation mechanism 10 and helps to improve the production efficiency of the foldable electronic device 1000.

[0110] Specifically, the mounting base 215 is fixed within the receiving space 1a of the shaft seat 1. Exemplary methods of fixing the mounting base 215 to the shaft seat 1 include, but are not limited to, welding, snap-fitting, screw connection, or adhesive bonding.

[0111] To facilitate the positioning and installation between the mounting base 215 and the shaft seat 1, please refer to the following embodiments: Figure 6 , Figure 6 According to Figure 4The diagram shows the engagement of the first door panel 3, the second door panel 4, and the first rotating assembly 2. A first positioning hole 215a is provided on the bottom wall of the mounting base 215, and a first positioning post 11 is provided on the inner wall of the accommodating space 1a (in conjunction with...). Figure 4 When assembling the synchronous rotation module 21 and the bearing 1, the synchronous rotation module 21 can be pre-positioned by utilizing the cooperation between the first positioning hole 215a and the first positioning pin 11, and then the mounting base 215 and the bearing 1 can be further fixed by welding, snap-fitting, or screw connection. For example, there can be one first positioning pin 11 and one first positioning hole 215a. Alternatively, there can be multiple first positioning pins 11 and multiple first positioning holes 215a, for example, three, four, five, or six.

[0112] In other examples, the first positioning hole 215a may also be formed in the bearing seat 1, and the first positioning pin 11 may be formed in the mounting base 215. Of course, it is understood that in other examples, to simplify the structure, the first positioning hole 215a and the first positioning pin 11 may not be provided in the rotating mechanism 10.

[0113] Please continue reading. Figure 6 To enable relative rotation between the first housing 20 and the second housing 30, a first swing arm 211 and a second swing arm 212 are disposed opposite each other on both sides of the mounting base 215 in the X-axis direction. The first swing arm 211 is hinged to the mounting base 215, and the second swing arm 212 is hinged to the mounting base 215.

[0114] The hinge axis of the first swing arm 211 and the hinge axis of the second swing arm 212 both extend along the Y-axis. Please continue reading. Figure 6 The first swing arm 211 is used for fixed connection with the first door panel 3. The connection method between the first swing arm 211 and the first door panel 3 includes, but is not limited to, adhesive bonding, snap-fitting, welding or screw connection.

[0115] To facilitate the positioning and installation between the first swing arm 211 and the first door panel 3, in some embodiments, please refer to... Figure 7 , Figure 7 According to Figure 6The diagram shows an enlarged view of the portion circled at point C. The first swing arm 211 has a first positioning protrusion 2111 at one end adjacent to the damping module 22 in the Y-axis direction. Exemplarily, the connection between the first positioning protrusion 2111 and the first swing arm 211 can be, but is not limited to, adhesive bonding, snap-fitting, welding, or screw connection. Also exemplaryly, the first positioning protrusion 2111 and the first swing arm 211 can be integrally molded. A first mating protrusion 31 is provided on the surface of the first door panel 3 facing away from the mating surface M3. A first positioning slot 311 is provided on the side of the first mating protrusion 31. The first positioning protrusion 2111 mates with the first positioning slot 311. Exemplarily, the first mating protrusion 31 and the first door panel 3 can be integrally molded. Also exemplaryly, the first mating protrusion 31 and the first door panel 3 can also be connected by welding, adhesive bonding, snap-fitting, or threaded connection.

[0116] In some embodiments, to achieve the hinge connection between the first swing arm 211 and the mounting base 215, please refer to... Figure 8 , Figure 8 According to Figure 6 The diagram shows an exploded view of the synchronous rotation module 21. A first hinge portion 2113 is provided on the first swing arm 211. Exemplarily, the first hinge portion 2113 and the first swing arm 211 are a single structural unit, meaning they are integrally molded parts. This simplifies the manufacturing process, reduces production costs, and improves the connection strength between the first hinge portion 2113 and the first swing arm 211. Also exemplaryly, the first hinge portion 2113 and the first swing arm 211 can be connected by adhesive, welding, screws, or snap-fitting.

[0117] The first swing arm 211 is hinged to the mounting base 215 via the first hinge portion 2113. For details, please refer to [further details]. Figure 8 The mounting base 215 has a first hinge groove 215b. The first hinge groove 215b has a first arc-shaped hinge groove 215b2 on the side wall away from the damping module 22 in the Y-axis direction. The center line of the first arc-shaped hinge groove 215b2 extends along the Y-axis direction. The end of the first hinge portion 2113 away from the damping module 22 in the Y-axis direction has a first arc-shaped portion 21131. The center line of the first arc-shaped portion 21131 extends along the Y-axis direction.

[0118] Please see Figure 9 , Figure 9 According to Figure 8 The diagram shows the engagement of the mounting base 215, the first swing arm 211, and the second swing arm 212. The first hinge portion 2113 engages within the first hinge groove 215b, and the first arc-shaped portion 21131 engages with and is embedded within the first arc-shaped hinge groove 215b2.

[0119] In this way, not only can the first swing arm 211 be hinged relative to the mounting base 215, but there is no need to set up a separate hinge shaft. The structure is simple and easy to process and manufacture. At the same time, the structure of the rotating mechanism 10 can be made compact.

[0120] Of course, it is understandable that in other examples, when the first hinge groove 215b is provided with the first arc-shaped hinge groove 215b2 on both sides of the first hinge groove 215b in the Y-axis direction, the first hinge part 2113 is provided with the first arc-shaped part 21131 at both ends in the Y-axis direction, and one first arc-shaped part 21131 corresponds to one first arc-shaped hinge groove 215b2.

[0121] For example, the extension path of the first arc-shaped hinge groove 215b2 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), without specific limitations here. Figure 8 and Figure 9 In the illustrated embodiment, the extension path of the first arc-shaped hinge groove 215b2 is a minor arc. Similarly, the extension path of the first arc-shaped portion 21131 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and is not specifically limited here. Figure 8 and Figure 9 In the embodiment shown, the extension path of the first arc-shaped portion 21131 is a minor arc.

[0122] In order to form a first arcuate hinge groove 215b2 on the side wall of the first hinge groove 215b away from the damping module 22 in the Y-axis direction, please refer to some examples. Figure 8 and Figure 9 A first rib 215b1 is formed on the side wall of the first hinge groove 215b away from the damping module 22 in the Y-axis direction. The surface of the first rib 215b1 facing the circumferential groove wall of the first hinge groove 215b is an arc-shaped surface, and the center line of the arc-shaped surface of the first rib 215b1 extends along the Y-axis direction. The surface of the circumferential groove wall of the first hinge groove 215b directly opposite the first rib 215b1 is also an arc-shaped surface, and the center line of this arc-shaped surface extends along the Y-axis direction. A first arc-shaped hinge groove 215b2 is defined between the first rib 215b1 and the circumferential groove wall of the first hinge groove 215b.

[0123] Based on this, to further improve the hinge reliability between the first swing arm 211 and the mounting base 215, the first hinge portion 2113 is arc-shaped. The center line of the first hinge portion 2113 extends along the Y-axis direction. The end of the arc-shaped first hinge portion 2113 away from the damping module 22 along the Y-axis direction defines the first arc-shaped portion 21131. The circumferential groove wall of the first hinge groove 215b is an arc-shaped surface adapted to the first hinge portion 2113. The center line of the circumferential groove wall of the first hinge groove 215b extends along the Y-axis direction.

[0124] It should be noted that the "circumferential groove wall" of the first hinge groove 215b refers to the groove wall of the first hinge groove 215b located between its two side walls in the Y-axis direction. For example, this "circumferential groove wall" can be parallel to the center line of the first arc-shaped hinge groove 215b2. In this document, the "circumferential groove wall" of B refers to the groove wall of B located between its two side walls in the Y-axis direction. The same concept should be understood in the following text and will not be repeated.

[0125] Please return to the reference. Figure 6 The second swing arm 212 is used for fixed connection with the second door panel 4. The connection method between the second swing arm 212 and the second door panel 4 includes, but is not limited to, adhesive bonding, snap-fitting, welding or screw connection.

[0126] To facilitate the positioning and installation between the second swing arm 212 and the second door panel 4, in some embodiments, please refer to [the relevant documentation]. Figure 6 A second mating protrusion 41 is provided on the surface of the second door panel 4 facing away from the mating surface M3. For example, the second mating protrusion 41 and the second door panel 4 can be integrally formed. Also for example, the second mating protrusion 41 and the second door panel 4 can be connected by welding, gluing, snap-fitting, or threaded connection. A second positioning slot (not shown) is provided on the side of the second mating protrusion 41. A second positioning protrusion 2121 (connected to the damping module 22) is provided at one end of the second swing arm 212 in the Y-axis direction adjacent to the damping module 22. Figure 5 For example, the connection between the second positioning protrusion 2121 and the second swing arm 212 may include, but are not limited to, adhesive bonding, snap-fitting, welding, or screw connection. As another example, the second positioning protrusion 2121 and the second swing arm 212 may be integrally molded parts. The second positioning protrusion 2121 mates with the second positioning slot.

[0127] In the foldable electronic device 1000 of this application embodiment, since both the first swing arm 211 and the second swing arm 212 are hinged to the base, and the first swing arm 211 is connected to the first housing 20 through the first door panel 3, and the second swing arm 212 is connected to the second housing 30 through the second door panel 4, when the user drives the first housing 20 to rotate, the force applied by the user to the first housing 20 can be transmitted to the first swing arm 211 through the first door panel 3. Similarly, when the user drives the second housing 30 to rotate, the force applied by the user to the second housing 30 can be transmitted to the second swing arm 212 through the second door panel 4, thereby enabling the foldable electronic device 1000 to switch between a folded state and a flattened state. Of course, it is understood that, in order to simplify the structure of the rotating mechanism 10, in other embodiments, the rotating mechanism 10 may not include the first door panel 3 and the second door panel 4. In this case, the first swing arm 211 can be directly fixedly connected to the first housing 20, and the second swing arm 212 can be directly fixedly connected to the second housing 30.

[0128] In some embodiments, to achieve the hinge connection between the second swing arm 212 and the mounting base 215, please refer to [the relevant documentation]. Figure 8 and Figure 9 The second swing arm 212 is provided with a second hinge portion 2123. For example, the second hinge portion 2123 and the second swing arm 212 are a single structural unit, meaning they are integrally molded. This simplifies the manufacturing process, reduces production costs, and improves the connection strength between the second hinge portion 2123 and the second swing arm 212. As another example, the second hinge portion 2123 and the second swing arm 212 can also be connected by adhesive, welding, screw connection, or snap-fitting.

[0129] The second swing arm 212 is hinged to the mounting base 215 via the second hinge portion 2123. For details, please refer to [link / reference needed]. Figure 8 and Figure 9 The mounting base 215 has a second hinge groove 215c. On the side wall of the second hinge groove 215c, away from the damping module 22 in the Y-axis direction, there is a second arc-shaped hinge groove 215c2. The center line of the second arc-shaped hinge groove 215c2 extends along the Y-axis direction. At one end of the second hinge portion 2123, away from the damping module 22 in the Y-axis direction, there is a second arc-shaped portion 21231. The center line of the second arc-shaped portion 21231 extends along the Y-axis direction. The second hinge portion 2123 fits into the second hinge groove 215c, and the second arc-shaped portion 21231 fits into and is embedded in the second arc-shaped hinge groove 215c2.

[0130] In this way, not only can the second swing arm 212 be hinged relative to the mounting base 215, but there is no need to set up a separate hinge shaft. The structure is simple and easy to process and manufacture. At the same time, the structure of the rotating mechanism 10 can be made compact.

[0131] Of course, it is understandable that in other examples, when the second hinge groove 215c is provided with the second arc-shaped hinge groove 215c2 on both side walls in the Y-axis direction, the second hinge part 2123 has the second arc-shaped part 21231 at both ends in the Y-axis direction, and one second arc-shaped part 21231 corresponds to one second arc-shaped hinge groove 215c2.

[0132] For example, the extension path of the second arc-shaped hinge groove 215c2 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), without specific limitations here. Figure 8 and Figure 9 In the illustrated embodiment, the extension path of the second arc-shaped hinge groove 215c2 is a minor arc. Similarly, the extension path of the second arc-shaped portion 21231 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and is not specifically limited here. Figure 8 and Figure 9 In the embodiment shown, the extension path of the second arcuate portion 21231 is a minor arc.

[0133] To form a second arc-shaped hinge groove 215c2 on the side wall of the second hinge groove 215c away from the damping module 22 in the Y-axis direction, please refer to some examples. Figure 8 and Figure 9 A second rib 215c1 is formed on the side wall of the second hinge groove 215c away from the damping module 22 in the Y-axis direction. The surface of the second rib 215c1 facing the circumferential groove wall of the second hinge groove 215c is an arc-shaped surface. The center line of the arc-shaped surface of the second rib 215c1 extends along the Y-axis direction. The surface of the circumferential groove wall of the second hinge groove 215c directly opposite the second rib 215c1 is an arc-shaped surface, and the center line of this arc-shaped surface extends along the Y-axis direction. A second arc-shaped hinge groove 215c2 is defined between the second rib 215c1 and the circumferential groove wall of the second hinge groove 215c.

[0134] Building upon this, to further improve the hinge reliability between the second swing arm 212 and the mounting base 215, the second hinge portion 2123 is arc-shaped. The center line of the second hinge portion 2123 extends along the Y-axis direction. The end of the arc-shaped second hinge portion 2123 away from the damping module 22 along the Y-axis direction defines the second arc-shaped portion 21231. The circumferential groove wall of the second hinge groove 215c is an arc-shaped surface adapted to the second hinge portion 2123. The center line of the circumferential groove wall of the second hinge groove 215c extends along the Y-axis direction.

[0135] It should be noted that the "circumferential groove wall" of the second hinge groove 215c refers to the groove wall of the second hinge groove 215c located between the two side walls in the Y-axis direction. For example, this "circumferential groove wall" can be parallel to the center line of the second arc-shaped hinge groove 215c2.

[0136] Based on any of the above embodiments of the mounting base 215 having a first hinge groove 215b and a second hinge groove 215c, in order to achieve a compact structure of the first rotating assembly 2 and reduce the size of the rotating mechanism 10 in the X-axis direction, in some embodiments, please continue to refer to Figure 8 and Figure 9 The first hinge slot 215b and the second hinge slot 215c are arranged in the Y-axis direction, and the first hinge portion 2113 and the second hinge portion 2123 are also arranged in the Y-axis direction. This arrangement helps to reduce the distance between the hinge axes of the first swing arm 211 and the second swing arm 212, thereby improving the structural compactness of the rotating mechanism 10. Of course, it is understood that in other examples, the first hinge slot 215b and the second hinge slot 215c may also be arranged in the X-axis direction.

[0137] For example, the hinge axes of the first hinge portion 2113 and the second hinge portion 2123 are collinear. That is, the hinge axis of the first swing arm 211 and the hinge axis of the second swing arm 212 are collinear. In this way, the structural compactness of the rotating mechanism 10 can be improved. Of course, it is understood that in other examples, the hinge axes of the first hinge portion 2113 and the second hinge portion 2123 may not be collinear, but parallel.

[0138] In the synchronous rotation module 21 of this application embodiment, a first hinge portion 2113 is provided on the first swing arm 211, a second hinge portion 2123 is provided on the second swing arm 212, and a first hinge groove 215b and a second hinge groove 215c are provided on the mounting base 215. The relative rotation between the first swing arm 211 and the second swing arm 212 is realized by utilizing the cooperation between the first arc-shaped portion 21131 on the first hinge portion 2113 and the first arc-shaped hinge groove 215b2, and the cooperation between the second arc-shaped portion 21231 on the second hinge portion 2123 and the second arc-shaped hinge groove 215c2. The structure is simple, easy to process and manufacture, and there is no need to set a separate hinge shaft, which helps to save material costs and simplify the processing technology.

[0139] Please continue reading. Figure 8 Based on any of the above embodiments, the transmission component 213 is mounted on the mounting base 215. The transmission component 213 can cooperate with the first swing arm 211 and the second swing arm 212 respectively to achieve synchronous counter-rotation of the first swing arm 211 and the second swing arm 212. That is, the cooperation of the transmission component 213 with the first swing arm 211 and the second swing arm 212 respectively enables the rotation of the first swing arm 211 and the second swing arm 212 to be interconnected, thereby enabling the rotation of the first housing 20 and the second housing 30 to be interconnected. Specifically, the first housing 20 and the second housing 30 can rotate synchronously in opposite directions; that is, when the first housing 20 rotates, the second housing 30 also rotates in the opposite direction relative to the first housing 20. This synchronous rotation design can increase the folding and unfolding speed of the foldable electronic device 1000, reducing user operation time. Furthermore, this synchronous rotation design allows the user to operate only on one side of the first housing 20 and the second housing 30, eliminating the need to operate on both sides, thereby simplifying operation and improving user experience.

[0140] The first housing 20 and the second housing 30, which rotate in opposite directions, can include two states: the first state is when the foldable electronic device 1000 is folded, the first housing 20 and the second housing 30 rotate toward each other (or are referred to as relative); the second state is when the foldable electronic device 1000 is unfolded, the first housing 20 and the second housing 30 rotate away from each other.

[0141] In some embodiments, please continue reading Figure 8 and Figure 9To facilitate the cooperation between the first swing arm 211 and the transmission component 213, and between the second swing arm 212 and the transmission component 213, the first swing arm 211 is provided with a first transmission part 2112. The first transmission part 2112 and the first hinge part 2113 are located on the same side of the first swing arm 211, and are spaced apart in the Y-axis direction. The second swing arm 212 is provided with a second transmission part 2122. The second transmission part 2122 and the second hinge part 2123 are located on the same side of the second swing arm 212, and are spaced apart in the Y-axis direction. The first transmission part 2112 and the second transmission part 2122 cooperate with the transmission component 213.

[0142] For example, the first transmission part 2112 and the first swing arm 211 are a single structural unit, meaning they are integrally molded. This simplifies the manufacturing process, reduces production costs, and improves the connection strength between the first transmission part 2112 and the first swing arm 211. As another example, the first transmission part 2112 and the first swing arm 211 can also be connected by adhesive bonding, welding, screw connection, or snap-fitting.

[0143] For example, the second transmission part 2122 and the second swing arm 212 are a single structural unit, meaning they are integrally molded. This simplifies the manufacturing process, reduces production costs, and improves the connection strength between the second transmission part 2122 and the second swing arm 212. As another example, the second transmission part 2122 and the second swing arm 212 can also be connected by adhesive bonding, welding, screw connection, or snap-fitting.

[0144] Please continue reading. Figure 8 and Figure 9 The first transmission part 2112 is provided with a first helical groove 21121. The first helical groove 21121 extends helically in the Y-axis direction. The second transmission part 2122 is provided with a second helical groove 21221. The second helical groove 21221 extends helically in the Y-axis direction. The rotation direction of the first helical groove 21121 is opposite to that of the second helical groove 21221. The transmission component 213 is a transmission slider. The transmission slider is slidable relative to the mounting base 215 in the Y-axis direction. Please refer to [link / reference]. Figure 10 , Figure 10 According to Figure 8The diagram shows a perspective view of the transmission component 213. A first helical rib 2131 and a second helical rib 2132 are provided on the outer peripheral surface of the transmission slider. Both the first helical rib 2131 and the second helical rib 2132 extend helically in the Y-axis direction, and their directions of rotation are opposite. The direction of rotation of the first helical rib 2131 is the same as the direction of rotation of the first helical groove 21121. The direction of rotation of the second helical rib 2132 is the same as the direction of rotation of the second helical groove 21221, so that the first helical groove 21121 and the first helical rib 2131 can slide together, and the second helical groove 21221 and the second helical rib 2132 can slide together.

[0145] In this way, when the first housing 20 rotates, the rotation of the first housing 20 drives the first swing arm 211 to rotate. Since the first swing arm 211 is in sliding engagement with the transmission slider through the first helical rib 2131 and the first helical groove 21121, the rotation of the first swing arm 211 can drive the transmission slider to slide. At the same time, since the transmission slider is in sliding engagement through the second helical rib 2132 and the second helical groove 21221, the sliding of the transmission slider can drive the second swing arm 212 to rotate synchronously. This synchronous rotation design achieves synchronous counter-rotation of the first swing arm 211 and the second swing arm 212, while having a simple structure, being easy to manufacture, and eliminating the need for a separate gear transmission structure, which helps to save material costs and simplify the manufacturing process.

[0146] To achieve synchronous counter-rotation of the first swing arm 211 and the second swing arm 212, in some other examples, the first helical rib 2131 can be disposed on the first transmission part 2112, the second helical rib 2132 can be disposed on the second transmission part 2122, and the first helical groove 21121 and the second helical groove 21221 can both be disposed on the transmission slider. It is worth noting that the synchronous rotation design of the first swing arm 211 and the second swing arm 212 is not limited to the helical rib and helical groove cooperation form mentioned above. In other embodiments, the transmission component 213 can also be four meshing spur gears. The four spur gears are arranged sequentially in the X-axis direction. The two spur gears furthest apart can be fixed to the first transmission part 2112 and the second transmission part 2122 respectively.

[0147] Based on any of the above embodiments including the synchronous rotation module 21 with a transmission slider, in order to facilitate the installation of the transmission slider, please continue to refer to some embodiments. Figure 8 The mounting base 215 has a mounting groove 215d. The transmission slider is slidably disposed within the mounting groove 215d. This arrangement allows for a more compact structure of the synchronous rotation module 21, reducing its volume, which in turn contributes to the compactness of the rotation mechanism 10 and reduces its volume.

[0148] Based on this, in order to improve the reliability of the cooperation between the transmission slider and the first transmission part 2112 and the second transmission part 2122, in some embodiments, please refer to... Figure 10 The outer peripheral surface of the transmission slider has a first arcuate surface 2133 facing the shaft seat 1. The center line of the first arcuate surface 2133 extends along the Y-axis direction. The first arcuate surface 2133 arches towards the shaft seat 1. The circumferential groove wall of the mounting groove 215d is a second arcuate surface 215d1 that conforms to the first arcuate surface 2133. The center line of the second arcuate surface 215d1 extends along the Y-axis direction.

[0149] Since the first swing arm 211 rotates relative to the mounting base 215, it will drive the first transmission part 2112 to rotate in the same direction, and drive the second swing arm 212 and the second transmission part 2122 to rotate synchronously in opposite directions, in order to improve the reliability of the cooperation between the first transmission part 2112 and the transmission slider, and the reliability of the cooperation between the second transmission part 2122 and the transmission slider, and to prevent the transmission slider from interfering with the movement of the first transmission part 2112 and the second transmission part 2122 as the swing arm rotates, in some embodiments, please continue to refer to Figure 8 and combined Figure 11 , Figure 11 According to Figure 8 The diagram shows an assembly of the mounting base 215, the transmission slider, and the limiting member 214. A portion of the circumferential groove wall of the mounting groove 215d is recessed towards the shaft seat 1 to form a first groove 215d11 and a second groove 215d12. The circumferential groove wall of the first groove 215d11 is arc-shaped. The center line of the circumferential groove wall of the first groove 215d11 extends along the Y-axis. The first arc-shaped surface 2133 and the first groove 215d11 define a first arc-shaped sliding cavity 215d111. The circumferential groove wall of the second groove 215d12 is arc-shaped. The center line of the circumferential groove wall of the second groove 215d12 extends along the Y-axis. The first arc-shaped surface 2133 and the second groove 215d12 define a second arc-shaped sliding cavity 215d121. Both the first transmission part 2112 and the second transmission part 2122 are arc-shaped. The center lines of both the first transmission part 2112 and the second transmission part 2122 extend along the Y-axis. The first transmission part 2112 is slidably fitted within the first arc-shaped sliding cavity 215d111. The second transmission part 2122 is slidably fitted within the second arc-shaped sliding cavity 215d121. This design guides the engagement of the first transmission part 2112 with the first arc-shaped sliding cavity 215d111, and the second transmission part 2122 with the second arc-shaped sliding cavity 215d121, improving the reliability of their engagement. Furthermore, it avoids interference with the rotation of the first swing arm 211 and the second swing arm 212 relative to the mounting base 215.

[0150] Based on the embodiments described above, where the mounting base 215 includes a first groove 215d11 and a second groove 215d12, in order to achieve a compact structure for the first rotating assembly 2 and reduce the size of the rotating mechanism 10 in the X-axis direction, in some embodiments, please refer to [the relevant documentation]. Figure 11 The first groove 215d11 and the second groove 215d12 are arranged in the Y-axis direction, and the first transmission part 2112 and the second transmission part 2122 are arranged in the Y-axis direction. In this way, the structural compactness of the rotating mechanism 10 is improved.

[0151] Specifically, the center lines of the circumferential groove walls of the first groove 215d11 and the second groove 215d12 are collinear. This improves the structural compactness of the rotating mechanism 10. Of course, it is understood that in other examples, the center lines of the circumferential groove walls of the first groove 215d11 and the second groove 215d12 may not be collinear, but rather parallel.

[0152] Based on the above embodiments, in order to fully utilize the space between the first hinge portion 2113 and the first transmission portion 2112 in the Y-axis direction, and to fully utilize the space between the second hinge portion and the second transmission portion 2122 in the Y-axis direction, thereby reducing the size of the synchronous rotation module 21 in the Y-axis direction, please continue to refer to... Figure 11 In the Y-axis direction, the mounting groove 215d is located between the first hinge groove 215b and the second hinge groove 215c, and the first recess 215d11 is located between the second recess 215d12 and the second hinge groove 215c. Thus, in the Y-axis direction, the second transmission part 2122 is located between the first transmission part 2112 and the first hinge part 2113, and the second hinge part 2123 is located on the side of the first transmission part 2112 away from the first hinge part 2113. This allows for a reasonable optimization of the structural layout of the synchronous rotation module 21, achieving a compact structure.

[0153] Based on any of the above embodiments where the transmission slider is installed in the mounting groove 215d, in order to prevent the transmission slider from detaching from the mounting groove 215d, please continue to refer to... Figure 11 The limiting member 214 is fixedly connected to the mounting base 215. The limiting member 214 abuts against the side of the transmission slider opposite to the shaft seat 1. Exemplarily, the connection method between the limiting member 214 and the mounting base 215 includes, but is not limited to, adhesive bonding, snap-fitting, welding, or screw connection.

[0154] In some embodiments, please continue reading Figure 11 and combined Figure 12 , Figure 12 According to Figure 11The diagram shows an exploded view of the mounting base 215, the transmission slider, and the limiting member 214. The mounting groove 215d has a first retaining rib 215d2. The first groove 215d11 and the second groove 215d12 are separated by the first retaining rib 215d2. The limiting member 214 is fixedly connected to the first retaining rib 215d2 at both ends of the transmission slider in the circumferential direction. This allows the limiting member 214 to abut against the transmission slider from the middle position, improving the limiting effect on the transmission slider.

[0155] Here, "middle part" should be interpreted broadly, referring to the area far from the two ends of the transmission slider in the Y-axis direction.

[0156] In some embodiments, please continue reading Figure 12 The first stop rib 215d2 has positioning grooves 215d21 at both ends of the transmission slider in the circumferential direction. The limiting member 214 has a positioning part 2143. The positioning part 2143 cooperates with the positioning groove 215d21. Thus, the cooperation between the positioning part 2143 and the positioning groove 215d21 can play a positioning role in the installation between the limiting member 214 and the mounting base 215.

[0157] In some embodiments, please continue reading Figure 12 The limiting member 214 has a stop protrusion 2144 on its surface facing the transmission slider. The surface of the transmission slider facing the limiting member 214 has a stop groove 2135. The stop protrusion 2144 abuts against the groove wall of the stop groove 2135. This not only improves the limiting effect of the limiting member 214 and the transmission slider in the Z-axis direction, but also helps to achieve a compact structure of the rotating mechanism 10.

[0158] In some embodiments, please continue reading Figure 12 To prevent the limiting member 214 from interfering with the movement of the first transmission part 2112 relative to the mounting base 215, the limiting member 214 has a first notch 2141 at each end in the X-axis direction. Each first notch 2141 corresponds to one first transmission part 2112. Each first notch 2141 is used to avoid the corresponding first transmission part 2112.

[0159] In some embodiments, please continue reading Figure 12 To prevent the limiting member 214 from interfering with the movement of the second transmission part 2122 relative to the mounting base 215, the limiting member 214 has a second notch 2142 at each end in the second direction. Each second notch 2142 corresponds to one second transmission part 2122. Each second notch 2142 is used to avoid the corresponding second transmission part 2122.

[0160] In some embodiments, to improve the sliding reliability of the transmission slider in the Y-axis direction, please refer to [further details]. Figure 12 Two guide protrusions 2134 are provided on the surface of the transmission slider away from the shaft seat 1. The two guide protrusions 2134 correspond one-to-one with the first notches 2141 at both ends of the limiting member 214 in the second direction and are slidably engaged. With this design, when the transmission slider slides in the Y-axis direction, the guide protrusions 2134 can slide within the corresponding first notches 2141, thereby guiding the sliding of the transmission slider by utilizing the cooperation between the guide protrusions 2134 and the first notches 2141.

[0161] For example, the connection between the guide protrusion 2134 and the limiting member 214 can be achieved by means including but not limited to adhesive bonding, snap-fitting, welding, or screw connection. As another example, the guide protrusion 2134 and the limiting member 214 can also be integrally molded parts.

[0162] Based on any of the above embodiments, please refer to Figure 13 and Figure 14 , Figure 13 According to Figure 4 The image shows a perspective view of the damping module 22. Figure 14 According to Figure 4 The diagram shows an exploded view of the damping module 22. The damping module 22 includes a mounting base 221 and a force-applying component 222.

[0163] Understandable, Figure 13 and Figure 14 The damping module 22 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 13 and Figure 14 Restrictions.

[0164] The damping module 22 is fixed to the bearing 1 by means of a mounting base 221. Specifically, other components of the damping module 22, such as the force-applying component 222, can be first installed on the mounting base 221, and then the mounting base 221 and the bearing 1 are assembled together, thereby realizing the installation of each component of the entire damping module 22 onto the bearing 1. In this way, compared with assembling each component of the damping module 22 onto the bearing 1 sequentially, it is beneficial to simplify the assembly process of the rotating mechanism 10. During the assembly of the damping module 22, it is possible to know whether the assembly of each component is qualified. Furthermore, after the damping module 22 is assembled, the performance of the components in the damping module 22 can be tested, which greatly facilitates the assembly and testing of the rotating mechanism 10 and helps to improve the production efficiency of the foldable electronic device 1000.

[0165] Specifically, the fixing seat 221 is fixed within the receiving space 1a of the shaft seat 1. Exemplary methods of fixing the fixing seat 221 to the shaft seat 1 include, but are not limited to, welding, snap-fitting, screw connection, or adhesive bonding.

[0166] In some embodiments, for ease of positioning and installation between the fixed base 221 and the shaft seat 1, please refer back to the previous section. Figure 4 A second positioning post 12 is provided on the inner wall of the accommodating space 1a. A second positioning hole 221a is provided on the bottom wall of the fixing base 221 (in conjunction with...). Figure 6 When assembling the damping module 22 and the bearing seat 1, the damping module 22 can be pre-positioned by the cooperation of the second positioning hole 221a and the second positioning post 12, and then the fixing seat 221 and the bearing seat 1 can be further fixed by welding, snap-fitting, or screw connection. For example, there can be one second positioning post 12 and one second positioning hole 221a. Alternatively, there can be multiple second positioning posts 12 and multiple second positioning holes 221a, for example, three, four, five, or six.

[0167] In other examples, the second positioning hole 221a may also be formed in the bearing seat 1, and the second positioning pin 12 may be formed in the fixed seat 221. Of course, it is understood that in other examples, in order to simplify the structure, the rotating mechanism 10 may not have the second positioning hole 221a and the second positioning pin 12.

[0168] Based on this, for further installation and positioning of the mounting base 215 and the fixed base 221, please refer to [the relevant documentation / reference needed]. Figure 4 The inner wall of the accommodating space 1a is provided with a first limiting rib 13 and a second limiting rib 14 (combined with...). Figure 4 ).

[0169] The first limiting rib 13 and the second limiting rib 14 are arranged at intervals along the Y-axis. The space between one of the second side plates 17 and the first limiting rib 13 in the receiving space 1a is used to fix the mounting base 215. The space between the first limiting rib 13 and the second limiting rib 14 in the receiving space 1a is used to fix the fixing base 221. This improves the installation and positioning effect of the mounting base 215 and the fixing base 221. Of course, it is understood that in other examples, the first limiting rib 13 and the second limiting rib 14 may not be provided on the shaft seat 1.

[0170] For example, the first limiting rib 13, the second limiting rib 14, and the shaft seat 1 can be integrally formed. This helps to improve the structural strength of the first limiting rib 13 and the second limiting rib 14 and simplifies the manufacturing process. In other examples, the first limiting rib 13 and the second limiting rib 14 can also be fixed to the shaft seat 1 by means of adhesive bonding, welding, or snap-fitting.

[0171] Please refer to it again. Figure 13 and Figure 14To facilitate the installation of the force-applying component 222 and achieve a compact structure for the damping module 22, the mounting base 221 has an installation space 221b. The side of the installation space 221b facing the folding screen 200 is open. The force-applying component 222 is fixed within the installation space 221b.

[0172] The force-applying component 222 provides a damping force in the Y-axis direction for the rotation of the first swing arm 211 and the second swing arm 212 relative to the mounting base 215. Specifically, the force-applying component 222 can cooperate with at least one of the first swing arm 211 and the second swing arm 212 to apply a force in the Y-axis direction to the first swing arm 211 and the second swing arm 212, which can be used as the aforementioned damping force. That is, the force-applying component 222 can cooperate with the first swing arm 211, the second swing arm 212, or both the first swing arm 211 and the second swing arm 212. It is understood that, due to the synchronous counter-rotation of the first swing arm 211 and the second swing arm 212, even when the force-applying component 222 is cooperated with only one of the first swing arm 211 and the second swing arm 212, it can still simultaneously provide a damping force for the rotation of the first swing arm 211 and the second swing arm 212 relative to the mounting base 215.

[0173] In this way, by using the force-applying component 222 to provide damping force for the rotation of the first swing arm 211 and the second swing arm 212 relative to the mounting base 215, on the one hand, it can provide the user with a damped feel when the foldable electronic device 1000 switches between the folded state and the flat state, preventing damage to the foldable screen 200 caused by the first housing 20 and the second housing 30 of the foldable electronic device 1000 being arbitrarily folded together due to the absence of a damping module 22, which is beneficial to improving the user experience; on the other hand, it can also help the foldable electronic device 1000 maintain the folded state and the flat state, making it convenient for the user to use. Furthermore, it also helps to improve the reliability of the fit between the first swing arm 211 and the second swing arm 212 and the mounting base 215, reduce the fit gap between the first hinge part 2113 and the side wall of the first hinge groove 215b in the first direction away from the damping module 22, reduce the fit gap between the second hinge part 2123 and the side wall of the second hinge groove 215c in the first direction away from the damping module 22, and improve the synchronization of the first swing arm 211 and the second swing arm 212.

[0174] For ease of explanation, the following description will use the cooperation between the force-applying component 222 and the first swing arm 211 as an example.

[0175] Please continue reading. Figure 13 and Figure 14To facilitate the engagement between the force-applying component 222 and the first swing arm 211, the damping module 22 also includes a sliding block 223. The sliding block 223 is installed within the mounting space 221b. The sliding block 223 is slidable relative to the fixed base 221 in the Y-axis direction. The force-applying component 222 is located on the side of the sliding block 223 furthest from the synchronous rotation module 21. The force-applying component 222 constantly drives the sliding block 223 to slide towards the synchronous rotation module 21; that is, the force-applying component 222 always applies a force to the sliding block 223 towards the synchronous rotation module 21, so that the sliding block 223 can engage with the first swing arm 211.

[0176] Please continue reading. Figure 13 To facilitate the engagement of the sliding block 223 with the first swing arm 211, the mounting space 221b has an opening 221b2 on the side facing the synchronous rotation module 21. The sliding block 223 can engage with the first swing arm 211 through this opening 221b2.

[0177] Based on this, since the force-applying component 222 constantly applies a force to the sliding block 223 toward the synchronously rotating module 21, in order to prevent the sliding block 223 from detaching from the mounting space 221b through the opening 221b2 under the action of this force, an anti-detachment rib 2211 is provided at the opening 221b2. The anti-detachment rib 2211 is used to abut against the surface of the sliding block 223 toward the synchronously rotating module 21.

[0178] Please continue reading. Figure 13 and Figure 14 In some embodiments, the force-applying element 222 is a compression spring. This simplifies the structure of the force-applying element 222. Furthermore, to facilitate the positioning and installation of the compression spring and its operation, the damping module 22 also includes a limiting block 224. The limiting block 224 is fixed within the installation space 221b and is positioned on the side of the compression spring away from the sliding block 223. The compression spring connects the sliding block 223 and the limiting block 224. The compression spring is always in a compressed state, thus ensuring that it consistently applies a force towards the synchronously rotating module 21 to the sliding block 223.

[0179] In addition, to prevent the compression spring from disengaging from the sliding block 223 and the limiting block 224, the damping module 22 further includes a fixed shaft 225. The fixed shaft 225 extends in the Y-axis direction. The fixed shaft 225 is fixed to the side of the sliding block 223 facing the limiting block 224. The limiting block 224 is provided with a through hole 2241, through which the fixed shaft 225 is movably inserted, and the compression spring is sleeved on the fixed shaft 225. Thus, the movable engagement between the fixed shaft 225 and the through hole 2241 facilitates the movement of the fixed shaft 225 as the sliding block 223 moves, avoiding interference between the fixed shaft 225 and the through hole 2241.

[0180] For example, the connection between the fixed shaft 225 and the sliding block 223 may include, but is not limited to, adhesive bonding, snap-fitting, welding, or screw connection. Also for example, the fixed shaft 225 and the sliding block 223 may be integrally molded parts.

[0181] For example, the number of compression springs can be multiple, such as four. The multiple compression springs are spaced apart in the X-axis direction. The number of fixed shafts 225 and through holes 2241 is the same as the number of compression springs. Each compression spring corresponds to one fixed shaft 225 and one through hole 2241.

[0182] Specifically, to ensure the reliability of the fit between the fixed shaft 225 and the through hole 2241 and to prevent the fixed shaft 225 from detaching from the through hole 2241, the damping module 22 also includes a latch (not shown in the figure). The latch is located on the side of the limiting block 224 away from the sliding block 223. The latch is fixed to the outer peripheral wall of the fixed shaft 225 and is used to abut against the limiting block 224. Of course, it is understood that when the length of the fixed shaft 225 is set to be relatively long, the latch may not be provided.

[0183] In some implementations, to lock the foldable electronic device 1000 in both folded and unfolded states, please refer to [link / reference needed]. Figure 15 , Figure 15 According to Figure 4 The diagram shows the engagement of the synchronous rotation module 21 and the damping module 22. The first hinge portion 2113, adjacent to the damping module 22 in the Y-axis direction, has a first protrusion 21132, a first recess 21133, and a second recess 21134. The first recess 21133 and the second recess 21134 are located on either side of the first protrusion 21132. The first hinge groove 215b is open on the side facing the damping module 22 to form an opening. The first protrusion 21132 extends out of the first hinge groove 215b through the opening. The sliding block 223, adjacent to the synchronous rotation module 21, has a second protrusion 2231, a third recess 2232, and a fourth recess 2233. The third recess 2232 and the fourth recess 2233 are located on either side of the second protrusion 2231.

[0184] Please continue reading. Figure 15 When the foldable electronic device 1000 is in a flattened state, the first protrusion 21132 engages with the fourth recess 2233 and the second protrusion 2231 engages with the first recess 21133.

[0185] When the foldable electronic device 1000 is in a folded state, the first protrusion 21132 engages with the third recess 2232, and the second protrusion 2231 engages with the second recess 21134.

[0186] Specifically, when the user drives the foldable electronic device 1000 to switch from a flattened state to a folded state, the first protrusion 21132 rotates along with the rotation of the first swing arm 211. During this process, the first protrusion 21132 gradually disengages from the fourth recess 2233 and moves along the side wall of the fourth recess 2233 adjacent to the second protrusion 2231 toward the second protrusion 2231. At the same time, the second protrusion 2231 gradually disengages from the first recess 21133 until the first protrusion 21132 and the second protrusion 2231 come into contact. At this point, the compression spring has the greatest deformation. As the first swing arm 211 continues to rotate, the first protrusion 21132 slides into the third recess 2232, and the second protrusion 2231 slides into the second recess 21134. Thus, through the cooperation of the first protrusion 21132 and the third recess 2232, and the cooperation of the second protrusion 2231 and the second recess 21134, the foldable electronic device 1000 is locked in a folded state.

[0187] Similarly, when the user drives the foldable electronic device 1000 to switch from a folded state to a flattened state, the first protrusion 21132 rotates with the rotation of the first swing arm 211. During this process, the first protrusion 21132 gradually disengages from the third recess 2232 and moves along the side wall of the third recess 2232 adjacent to the second protrusion 2231 toward the second protrusion 2231. At the same time, the second protrusion 2231 gradually disengages from the second recess 21134 until the first protrusion 21132 and the second protrusion 2231 come into contact. At this time, the deformation of the compression spring is at its maximum. As the first swing arm 211 continues to rotate, the first protrusion 21132 slides into the fourth recess 2233, and the second protrusion 2231 slides into the first recess 21133. Thus, through the cooperation of the first protrusion 21132 and the fourth recess 2233, and the cooperation of the second protrusion 2231 and the first recess 21133, the foldable electronic device 1000 is locked in a flattened state.

[0188] For example, in the direction from the bottom surface of the first recess 21133 to the top surface of the first protrusion 21132, the side surfaces of the first recess 21133 adjacent to the first protrusion 21132 and the side surfaces of the first protrusion 21132 adjacent to the first recess 21133 are inclined toward the direction of the second recess 21134. This guides the movement of the second protrusion 2312, facilitating the smooth sliding of the second protrusion 2231 from the first recess 21133 to the first protrusion 21132, and also facilitating the smooth sliding of the second protrusion 2231 from the first protrusion 21132 into the first recess 21133. For example, the side surfaces of the first recess 21133 adjacent to the first protrusion 21132 and the side surfaces of the first protrusion 21132 adjacent to the first recess 21133 extend in an arc shape. For example, the side of the first concave portion 21133 adjacent to the side of the first convex portion 21132 and the side of the first convex portion 21132 adjacent to the side of the first concave portion 21133 extend in a planar manner.

[0189] For example, in the direction from the bottom surface of the second recess 21134 to the top surface of the first protrusion 21132, the side surface of the second recess 21134 adjacent to the first protrusion 21132 and the side surface of the first protrusion 21132 adjacent to the second recess 21134 are inclined toward the direction closer to the first recess 21133. This guides the movement of the second protrusion 2231, facilitating its smooth sliding from the second recess 21134 to the first protrusion 21132, and also facilitating its smooth sliding from the first protrusion 21132 into the second recess 21134. For example, the side surface of the second recess 21134 adjacent to the first protrusion 21132 and the side surface of the first protrusion 21132 adjacent to the second recess 21134 extend in an arc shape. For example, the side of the second recess 21134 adjacent to the side of the first protrusion 21132 and the side of the first protrusion 21132 adjacent to the side of the second recess 21134 extend in a planar manner.

[0190] For example, in the direction from the bottom surface of the third recess 2232 to the top surface of the second protrusion 2231, the side surface of the third recess 2232 adjacent to the second protrusion 2231 and the side surface of the second protrusion 2231 adjacent to the third recess 2232 are inclined toward the direction of the fourth recess 2233. This guides the movement of the first protrusion 21132, facilitating its smooth sliding from the third recess 2232 to the second protrusion 2231, and also facilitating its smooth sliding from the second protrusion 2231 into the third recess 2232. For example, the side surface of the third recess 2232 adjacent to the second protrusion 2231 and the side surface of the second protrusion 2231 adjacent to the third recess 2232 extend in an arc shape. For example, the side of the third recess 2232 adjacent to the side of the second protrusion 2231 and the side of the second protrusion 2231 adjacent to the side of the third recess 2232 extend in a planar manner.

[0191] For example, in the direction from the bottom surface of the fourth recess 2233 to the top surface of the second protrusion 2231, the side surface of the fourth recess 2233 adjacent to the second protrusion 2231 and the side surface of the second protrusion 2231 adjacent to the fourth recess 2233 are inclined towards the direction of approaching the third recess 2232. This guides the movement of the first protrusion 21132, facilitating its smooth sliding from the fourth recess 2233 to the second protrusion 2231, and also facilitating its smooth sliding from the second protrusion 2231 into the fourth recess 2233. For example, the side surface of the fourth recess 2233 adjacent to the second protrusion 2231 and the side surface of the second protrusion 2231 adjacent to the fourth recess 2233 extend in an arc shape. For example, the side of the fourth recess 2233 adjacent to the side of the second protrusion 2231 and the side of the second protrusion 2231 adjacent to the side of the fourth recess 2233 extend in a planar manner.

[0192] Please return to the reference. Figure 13 and Figure 14 To guide the movement of the sliding block 223 in the Y-axis direction and prevent it from detaching from the mounting space 221b, guide grooves 221b3 are provided on opposite walls of the mounting space 221b in the X-axis direction. Guide blocks 2234 are provided at both ends of the sliding block 223 in the X-axis direction, with one guide block 2234 corresponding to one guide groove 221b3, and the corresponding guide blocks 2234 slide in conjunction with the guide grooves 221b3.

[0193] For example, the connection methods between the guide block 2234 and the sliding block 223 include, but are not limited to, adhesive bonding, snap-fitting, welding, or screw connection. Also for example, the guide block 2234 and the sliding block 223 can be integrally molded parts.

[0194] Based on this, to prevent interference between the guide block 2234 and the opposite sidewall of the fixed seat 221 in the X-axis direction, which would cause difficulties in installing the sliding block 223, each guide groove 221b3 has a mounting port 221b4 at the end away from the synchronous rotation module 21. The mounting port 221b4 extends to the end face of the fixed seat 221 away from the shaft seat 1. The mounting port 221b4 allows the guide block 2234 to pass through. Therefore, when assembling the sliding block 223 and the fixed seat 221, the sliding block 223 can first be placed on the open side of the mounting space 221b, at the position of the fixed seat 221 corresponding to the mounting opening 221b4, with the two guide blocks 2234 on the sliding block 223 corresponding one-to-one with the mounting openings 221b4 on both sides of the fixed seat 221. Then, the guide blocks 2234 are made to pass through the mounting openings 221b4, and the sliding block 223 is made to extend into the mounting space 221b. Then, the sliding block 223 is pushed along the Y-axis direction, so that the guide blocks 2234 slide into the guide grooves 221b3. This achieves the assembly between the sliding block 223 and the fixed seat 221, with a simple structure.

[0195] Based on the above embodiment, since a fixed shaft 225 is connected to the sliding block 223, interference between the fixed shaft 225 and the limiting block 224 is prevented during the installation of the sliding block 223. The limiting block 224 and the fixed seat 221 are independently molded parts; that is, the limiting block 224 and the fixed seat 221 are two independent structural parts, fixed by assembly. The mounting space 221b is open on the side away from the synchronous rotation module 21 in the Y-axis direction to form a mounting opening 221b1. The limiting block 224 is assembled into the mounting space 221b via the mounting opening 221b1.

[0196] Therefore, during the assembly of the damping module 22, the sliding block 223 and the fixed seat 221 can be assembled first, and then a compression spring can be fitted onto the fixed shaft 225 fixed to the sliding block 223. Subsequently, the limiting block 224 is pushed from the mounting opening 221b1 toward the synchronous rotation module 21 to the preset mounting position, while the fixed shaft 225 passes through the through hole 2241 in the limiting block 224.

[0197] Based on this, when installing the limit block 224, in order to simplify the installation process and avoid the problem of aligning the through hole 2241 and the fixed shaft 225 during installation, please refer to [link / reference needed]. Figure 16 , Figure 16 According to Figure 14The diagram shows an enlarged view of the portion circled at point D in the damping module 22. The mounting space 221b has pre-positioning grooves 221b5 on opposite walls in the X-axis direction. These pre-positioning grooves 221b5 communicate with the mounting opening 221b1, meaning they extend to the end face of the fixed base 221 away from the synchronously rotating module 21. The limiting block 224 has pre-positioning blocks 2242 at both ends in the X-axis direction. Each pre-positioning block 2242 corresponds to one pre-positioning groove 221b5, and the corresponding pre-positioning groove 221b5 engages with the pre-positioning block 2242. Therefore, when installing the limiting block 224 and the fixing seat 221, the limiting block 224 can first be positioned on the side facing the mounting opening 221b1, and the pre-positioning groove 221b5 and the pre-positioning block 2242 can be aligned in the Y-axis direction. Then, along the Y-axis direction, the limiting block 224 is pushed towards the synchronous rotating module 21, so that the pre-positioning groove 221b5 and the pre-positioning block 2242 gradually engage. The engagement of the pre-positioning groove 221b5 and the pre-positioning block 2242 plays a role in pre-positioning the limiting block 224, thereby ensuring the relative positional relationship between the through hole 2241 on the limiting block 224 and the fixing shaft 225. This allows the fixing shaft 225 and the through hole 2241 to be aligned during the installation of the limiting block 224, avoiding the problem of manual alignment of the fixing shaft 225 and the through hole 2241 during the installation of the limiting block 224.

[0198] Based on any of the above embodiments, please refer back to the previous section. Figure 4 The rotating mechanism 10 also includes a second rotating assembly 6. The second rotating assembly 6 has the same structure as the first rotating assembly 2. The second rotating assembly 6 and the first rotating assembly 2 are centrally symmetrically arranged. The second rotating assembly 6 includes a synchronous rotating module 61 and a damping module 62. The connection relationship between the synchronous rotating module 61 and the damping module 62 is the same as that of the first rotating assembly 2. The assembly relationship between the damping module 62 and the bearing 1 is the same as that of the damping module 22 of the first rotating assembly 2. The assembly relationship between the synchronous rotating module 61 of the second rotating assembly 6 and the bearing 1 is the same as that of the synchronous rotating module 21 of the first rotating assembly 2. The only difference between the second rotating assembly 6 and the first rotating assembly 2 is that the first swing arm 611 of the second rotating assembly 6 is fixed to the second door panel 4, and the second swing arm 612 of the second rotating assembly 6 is fixed to the first door panel 3.

[0199] Understandably, in other examples, the rotating mechanism 10 may not have a second rotating component 6.

[0200] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0201] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A foldable electronic device, characterized in that, include: A rotating mechanism, comprising a bearing, a synchronous rotating module, and a damping module; The synchronous rotation module and the damping module are arranged in the first direction; The synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component. The synchronous rotation module is fixed to the shaft seat by means of the mounting base. The first swing arm and the second swing arm are disposed opposite to each other on both sides of the mounting base in a second direction and are both hinged to the mounting base. The hinge axes of the first swing arm and the second swing arm extend along the first direction. The transmission component is mounted on the mounting base and cooperates with the first swing arm and the second swing arm respectively. The damping module includes a fixed base and a force-applying component. The damping module is fixed to the bearing seat by means of the fixed base. The force-applying component is installed on the fixed base and is used to provide damping force for the rotation of the first swing arm and the second swing arm relative to the mounting seat.

2. The foldable electronic device according to claim 1, characterized in that, The transmission component is a transmission slider, which is slidable relative to the mounting base in a first direction. When the first swing arm rotates, the first swing arm drives the transmission slider to slide, and the transmission slider drives the second swing arm to rotate synchronously.

3. The foldable electronic device according to claim 2, characterized in that, The outer circumferential surface of the transmission slider is provided with a first helical rib and a second helical rib, the first helical rib and the second helical rib having opposite directions of rotation; The first swing arm is provided with a first transmission part, and the first transmission part is provided with a first spiral groove, which slides in cooperation with the first spiral rib. The second swing arm is provided with a second transmission part, and the second transmission part is provided with a second spiral groove, which slides in cooperation with the second spiral rib.

4. The foldable electronic device according to claim 3, characterized in that, The mounting base has a mounting groove, and the transmission slider is slidably disposed within the mounting groove.

5. The foldable electronic device according to claim 4, characterized in that, The outer peripheral surface of the transmission slider has a first arc-shaped surface facing the shaft seat, the first arc-shaped surface arches towards the shaft seat, and the first helical rib and the second helical rib are both formed on the first arc-shaped surface; A portion of the circumferential groove wall of the mounting groove is recessed towards the shaft seat to form a first groove and a second groove, respectively. The first arc-shaped surface and the first groove define a first arc-shaped sliding cavity, and the first arc-shaped surface and the second groove define a second arc-shaped sliding cavity. The first transmission part is arc-shaped and slides in the first arc-shaped sliding cavity. The second transmission part is arc-shaped and slides in the second arc-shaped sliding cavity.

6. The foldable electronic device according to claim 5, characterized in that, The synchronous rotation module also includes a limiting member, which is fixedly connected to the mounting base and abuts against the side of the transmission slider opposite to the shaft seat.

7. The foldable electronic device according to claim 6, characterized in that, The first groove and the second groove are arranged in a first direction. The mounting groove is provided with a first baffle. The first groove and the second groove are separated by the first baffle. The limiting member and the first baffle are fixedly connected to both ends of the transmission slider in the circumferential direction.

8. The foldable electronic device according to claim 6, characterized in that, The limiting member has a first notch at each end in the second direction, and one first notch corresponds to one first transmission part. The first notch is used to avoid the corresponding first transmission part. The limiting member has a second notch at each end in the second direction, and one second notch corresponds to one second transmission part. The second notch is used to avoid the corresponding second transmission part.

9. The foldable electronic device according to claim 8, characterized in that, The transmission slider has two guide protrusions on its surface away from the shaft seat. The two guide protrusions correspond one-to-one with the first notches at both ends of the limiting member in the second direction and slide in fit.

10. The foldable electronic device according to any one of claims 1-9, characterized in that, The mounting base has a first hinge groove, and a first arc-shaped hinge groove is provided on at least one side wall of the first hinge groove in a first direction. The first swing arm is provided with a first hinge portion, and at least one end of the first hinge portion in a first direction is provided with a first arc-shaped portion. The first hinge portion is fitted into the first hinge groove, and the first arc-shaped portion is correspondingly fitted and embedded in the first arc-shaped hinge groove.

11. The foldable electronic device according to any one of claims 1-9, characterized in that, The mounting base has a second hinge groove, and a second arc-shaped hinge groove is provided on at least one side wall of the second hinge groove in the first direction. The second swing arm is provided with a second hinge portion, and at least one end of the second hinge portion in the first direction is provided with a second arc-shaped portion. The second hinge portion is fitted into the second hinge groove, and the second arc-shaped portion is correspondingly fitted and embedded in the second arc-shaped hinge groove.

12. The foldable electronic device according to any one of claims 1-9, characterized in that, The first swing arm is provided with a first hinge part and a first transmission part. The first hinge part and the first transmission part are arranged at intervals in a first direction. The first swing arm is hinged to the mounting base by means of the first hinge part, and the first swing arm cooperates with the transmission component by means of the first transmission part. The second swing arm is provided with a second hinge part and a second transmission part. The second hinge part and the second transmission part are arranged at intervals in a first direction. The second swing arm is hinged to the mounting base by means of the second hinge part, and the second swing arm cooperates with the transmission component by means of the second transmission part. In a first direction, the second transmission part is located between the first transmission part and the first hinge part, and the second hinge part is located on the side of the first transmission part away from the first hinge part.

13. The foldable electronic device according to any one of claims 1-9, characterized in that, The damping module includes: a sliding block, which is mounted on the fixed base and is slidable relative to the fixed base in a first direction, and the sliding block abuts against at least one of the first swing arm and the second swing arm; The force-applying component is located on the side of the sliding block away from the synchronous rotation module, and the force-applying component usually drives the sliding block to abut against at least one of the first swing arm and the second swing arm.

14. The foldable electronic device according to claim 13, characterized in that, The first swing arm is provided with a first hinge portion, and the first swing arm is hinged to the mounting base by means of the first hinge portion. The first hinge portion is provided with a first protrusion, a first recess and a second recess at one end adjacent to the damping module along a first direction. The first recess and the second recess are located on both sides of the first protrusion. The sliding block has a second protrusion, a third recess, and a fourth recess at one end adjacent to the synchronous rotation module along the first direction, and the third recess and the fourth recess are located on both sides of the second protrusion. The foldable electronic device has a flattened state and a folded state. In the flattened state, the first protrusion engages with the fourth recess, and the second protrusion engages with the first recess. In the folded state, the first protrusion engages with the third recess, and the second protrusion engages with the second recess.

15. The foldable electronic device according to claim 14, characterized in that, The mounting base has a first hinge groove, which is open on one side facing the damping module to form an opening, and a first arc-shaped hinge groove is provided on the side wall of the first hinge groove opposite to the opening. The first hinge portion has a first arc-shaped portion at one end away from the damping module. The first hinge portion is fitted into the first hinge groove, and the first arc-shaped portion is correspondingly fitted and embedded in the first arc-shaped hinge groove. The first protrusion extends out of the first hinge groove through the opening.

16. The foldable electronic device according to claim 13, characterized in that, The force-applying component is a compression spring. The damping module further includes a limiting block, which is fixed to the fixing base and located on the side of the compression spring away from the sliding block. The compression spring is connected between the sliding block and the limiting block and is in a compressed deformation state.

17. The foldable electronic device according to claim 16, characterized in that, The damping module further includes a fixed shaft that extends along a first direction and is fixed to one end of the sliding block facing the limiting block. The limiting block has a through hole, through which the fixed shaft is movably inserted. The compression spring is sleeved on the fixed shaft.

18. The foldable electronic device according to claim 16, characterized in that, The fixed base has an installation space, and the sliding block, the force-applying component, and the limiting block are all fixed within the installation space. The side of the installation space facing the synchronous rotation module has an opening.

19. The foldable electronic device according to claim 18, characterized in that, The opening is provided with an anti-detachment rib, which is used to abut against the surface of the sliding block facing the synchronous rotation module.

20. The foldable electronic device according to claim 18 or 19, characterized in that, The installation space is provided with guide grooves on opposite walls in the second direction; The sliding block is provided with guide blocks at both ends in the second direction, and one guide block corresponds to one guide groove, with the corresponding guide block and guide groove slidingly engaged.

21. The foldable electronic device according to claim 20, characterized in that, The mounting space is open on the side away from the shaft seat, and each guide groove has an assembly port at the end away from the synchronous rotation module. The assembly port extends to the end face of the fixed seat away from the shaft seat and is adapted for the guide block to pass through.

22. The foldable electronic device according to any one of claims 18, 19, and 21, characterized in that, The mounting space is open on the side away from the synchronous rotation module in the first direction to form a mounting opening. The limiting block and the fixing seat are independently molded parts. The limiting block is assembled into the mounting space through the mounting opening.

23. The foldable electronic device according to claim 22, characterized in that, The installation space is provided with pre-positioning grooves on opposite walls in the second direction, and the pre-positioning grooves are in communication with the installation opening; The limiting block has pre-positioning blocks at both ends in the second direction, and one pre-positioning block corresponds to one pre-positioning slot, with the corresponding pre-positioning slot cooperating with the pre-positioning block.

24. The foldable electronic device according to any one of claims 1-9, 14-18, and 21, characterized in that, The hinge axis of the first swing arm and the hinge axis of the second swing arm are collinear.

25. The foldable electronic device according to any one of claims 1-9, 14-18, and 21, characterized in that, Also includes: A first housing and a second housing are respectively located on both sides of the bearing in a second direction. The first housing is connected to the first swing arm, and the second housing is connected to the second swing arm. A foldable screen, comprising a first part, a second part, and a third part, wherein the third part is located between the first part and the second part, the first part is supported and fixed to the mating surface of the first housing, the second part is supported and fixed to the mating surface of the second housing, and the third part is supported and fixed to the rotating mechanism.

26. A rotating mechanism, characterized in that, Includes bearing, synchronous rotation module and damping module; The synchronous rotation module and the damping module are arranged in the first direction; The synchronous rotation module includes a mounting base, a first swing arm, a second swing arm, and a transmission component. The synchronous rotation module is fixed to the shaft seat by means of the mounting base. The first swing arm and the second swing arm are disposed opposite to each other on both sides of the mounting base in a second direction and are both hinged to the mounting base. The hinge axes of the first swing arm and the second swing arm extend along the first direction. The transmission component is mounted on the mounting base and cooperates with the first swing arm and the second swing arm respectively. The damping module includes a fixed base and a force-applying component. The damping module is fixed to the bearing seat by means of the fixed base. The force-applying component is installed on the fixed base and is used to provide damping force for the rotation of the first swing arm and the second swing arm relative to the mounting seat.

27. The rotating mechanism according to claim 26, characterized in that, The transmission component is a transmission slider, which is slidable relative to the mounting base in a first direction. The outer peripheral surface of the transmission slider is provided with a first helical rib and a second helical rib, and the first helical rib and the second helical rib have opposite directions of rotation. The first swing arm is provided with a first transmission part, and the first transmission part is provided with a first spiral groove, which slides in cooperation with the first spiral rib. The second swing arm is provided with a second transmission part, and the second transmission part is provided with a second spiral groove, which slides in cooperation with the second spiral rib.

28. The rotating mechanism according to claim 27, characterized in that, The mounting base has a mounting groove, the transmission slider is slidably disposed in the mounting groove, the outer peripheral surface of the transmission slider has a first arc-shaped surface facing the shaft seat, the first arc-shaped surface arches towards the shaft seat, and the first helical rib and the second helical rib are both formed on the first arc-shaped surface; A portion of the circumferential groove wall of the mounting groove is recessed towards the shaft seat to form a first groove and a second groove, respectively. The first arc-shaped surface and the first groove define a first arc-shaped sliding cavity, and the first arc-shaped surface and the second groove define a second arc-shaped sliding cavity. The first transmission part is arc-shaped and slides in the first arc-shaped sliding cavity. The second transmission part is arc-shaped and slides in the second arc-shaped sliding cavity.

29. The rotating mechanism according to any one of claims 26-28, characterized in that, The first swing arm is provided with a first hinge part and a first transmission part. The first hinge part and the first transmission part are arranged at intervals in a first direction. The first swing arm is hinged to the mounting base by means of the first hinge part, and the first swing arm cooperates with the transmission component by means of the first transmission part. The second swing arm is provided with a second hinge part and a second transmission part. The second hinge part and the second transmission part are arranged at intervals in a first direction. The second swing arm is hinged to the mounting base by means of the second hinge part, and the second swing arm cooperates with the transmission component by means of the second transmission part. In a first direction, the second transmission part is located between the first transmission part and the first hinge part, and the second hinge part is located on the side of the first transmission part away from the first hinge part.

30. The rotating mechanism according to any one of claims 26-28, characterized in that, The first swing arm is provided with a first hinge portion, and the first swing arm is hinged to the mounting base by means of the first hinge portion. The first hinge portion is provided with a first protrusion, a first recess and a second recess at one end adjacent to the damping module along a first direction. The first recess and the second recess are located on both sides of the first protrusion. The damping module includes: a sliding block, which is mounted on the fixed base and is slidable relative to the fixed base in a first direction; the force-applying member is used to drive the sliding block to slide towards the synchronous rotation module; the sliding block has a second protrusion, a third recess and a fourth recess at one end of the sliding block adjacent to the synchronous rotation module along the first direction, and the third recess and the fourth recess are located on both sides of the second protrusion. The rotating mechanism has a flattened state and a folded state. In the flattened state, the first protrusion engages with the fourth concave portion, and the second protrusion engages with the first concave portion. In the folded state, the first protrusion engages with the third concave portion, and the second protrusion engages with the second concave portion.

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